[Problem] The objective of the present invention is to provide a mold falling prevention device that, by being provided with a detection device that detects when hooks are actually coupled to a mold, prevents the human error of forgetting to connect the hooks. [Solution] A mold falling prevention device according to the present invention is for ensuring that hooks 14 provided to platens 8, 9 of a horizontal injection molding machine are connected to a mold M that is detachably attached to the platens 8, 9, thereby preventing the mold M from falling. The mold falling prevention device is provided with a detection device 15 to detect that the hooks 14 are connected to the mold M.
According to the present invention, a cylinder body includes: a small diameter part embedded in a base body; and a large diameter part protruding in a first direction from a second surface side on the opposite side to a first surface in the base body and having an outer diameter larger than that of the small diameter part. An engagement tool is provided on the small diameter part of the cylinder body, and a cylinder chamber for reciprocating a piston member is formed in the large diameter part of the cylinder body. A working medium passage capable of supplying a working medium to the cylinder chamber from an inner peripheral side of the piston member is formed in a rod member. By driving a connection member in the first direction via the engagement tool, an object to be fixed is brought into contact with the first surface of the base body and positioning in the first direction is performed.
A coupling device includes a fluid pressure cylinder fixed to the first member. The fluid pressure cylinder includes a cylinder main body, a first piston and a second piston each reciprocally movable with respect to the cylinder main body along a first direction, and a biasing member that drives each of the first piston and the second piston to one side in the first direction. The cylinder main body has a first cylinder chamber that drives the first piston to the other side in the first direction, and a second cylinder chamber that is formed to be separated from the first cylinder chamber and that drives the second piston to the other side.
A cylinder main body is provided with a first port that supplies fluid pressure to a first cylinder chamber, and a second port that supplies fluid pressure to a second cylinder chamber. The fluid pressure supplied to the first port is transmitted to the first cylinder chamber via a clearance formed in a double tube structure.
B25B 5/06 - Arrangements for positively actuating jaws
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
A first piston, a first cylinder chamber, a second cylinder chamber, and a second piston are provided to be arranged side by side along a first direction from a base body side toward a fixation-target object side in an order of the first piston, the first cylinder chamber, the second cylinder chamber, and the second piston.
B23Q 3/18 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for positioning only
B23Q 3/08 - Work-clamping means other than mechanically-actuated
F16B 2/16 - Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using rollers or balls
This positioning and fixing device comprises a first member which is fixed to a first mechanism and a second member which is fixed to a second mechanism. The first member has a tapered protrusion which has a first tapered surface that decreases in diameter toward the second mechanism side. The second member includes an annular part which has a second tapered surface that can engage with the first tapered surface. When the first mechanism and the second mechanism approach each other along a first direction such that a first reference surface and a second reference surface make contact, the first tapered surface and the second tapered surface are brought into close contact via elastic deformation of the tapered protrusion toward the inner diameter side, thereby relatively positioning the first mechanism and the second mechanism in a planar direction orthogonal to the first direction. A reference part of the first member protrudes further to the outer diameter side than the tapered protrusion, along a direction orthogonal to the first direction. A slit part that at least partially divides the tapered protrusion is formed in the circumferential direction of the tapered protrusion.
In order to provide a die cooling system for an injection molding machine in which hose piping is done in a narrow space covered by a safety cover so as to prevent a coupling error, in a die cooling system for an injection molding machine 1 in which cooling water is supplied from a cooling water supply source 12 to a plurality of cooling water channels 10 of a die 2 attached to platens 3, 4 via a valve stand 13, the valve stand 13 comprises an inlet circuit 20 having a main inlet valve 18 and an outlet circuit 21 having a main outlet valve 19 protruding from a lateral face side of the platens 3, 4 toward a safety cover 9 of the injection molding machine 1. The main inlet valve 18 and the main outlet valve 19 are connected to the cooling water supply source 12. A plurality of open/close valves 15 are provided on the inlet circuit 20 and the outlet circuit 21 at predetermined intervals in the protrusion direction such that hoses 16 connected to the open/close valves 15 hang down in a bead curtain-like shape. A coupling 17 connected to the cooling water channel 10 is provided at the end of the hoses 16.
This positioning and fixing device comprises: a rod member fixed to a first mechanism; a cylinder mechanism provided to a second mechanism; a first member having a first reference surface serving as a positioning reference in a first direction; and a second member which is in contact with the rod member and has a second reference surface serving as a positioning reference in a second direction perpendicular to the first direction. The second member can move at least in the first direction with respect to the first member. The cylinder mechanism can attract the rod member in the first direction toward the second mechanism side.
This coupling device comprises a fluid pressure cylinder (100) fixed to a first member (1). The fluid pressure cylinder (100) includes: a cylinder body (10); a first piston (20) and a second piston (30) that are capable of reciprocating along a first direction with respect to the cylinder body (10); and an urging member (80) that drives the first piston (20) and the second piston (30) to one side in the first direction. The cylinder body (10) has a first cylinder chamber (51) that drives the first piston (20) to another side in the first direction, and a second cylinder chamber (52) that is formed apart from the first cylinder chamber (51), and drives the second piston (30) to the other side.
A clamp device, capable of fixing an object (1) to be fixed to a base body (2), comprise a cylinder main body (100) fixed to the base body (2), an output member (200) capable of reciprocation relative to the cylinder main body (100), a first cylinder chamber (300) for driving the output member (200) in a first direction, and a second cylinder chamber (400) for driving the output member (200) in a second direction. The cylinder main body (100) includes an inner peripheral pipe portion (111), an outer peripheral pipe portion (112), and a main body portion (110) having a double-pipe structure, and a gap (32) is formed between the inner peripheral pipe portion (111) and the outer peripheral pipe portion (112). The output member (200) includes a rod portion (210) that protrudes from the cylinder main body (100), and a piston portion (220) that is connected to the rod portion (210) and partitions a space on the inside of the inner peripheral pipe portion (111) into the first cylinder chamber (300) and the second cylinder chamber (400). A first port (30) and a second port (40) for supplying fluid pressure respectively to the first cylinder chamber (300) and the second cylinder chamber (400) are provided in the cylinder main body (100). The fluid pressure supplied by the first port (30) reaches the first cylinder chamber (300) via the gap (32) formed in the double-pipe structure.
In the present invention, a fluid pressure cylinder (100) fixed to a base body (1) comprises: a cylinder body (10); a first piston (21) and a second piston (30) that are capable of reciprocating motion relative to the cylinder body (10); a first cylinder chamber (40) that drives the first piston (21) and the second piston (30) to a fixing side; a second cylinder chamber (50) that drives the first piston (21) and the second piston (30) to a fixing-release side; and an engaging part (60) that can be located on an inner peripheral side of an annular member (200) and that is can switch, in conjunction with the reciprocating motion of the first piston (21) and the second piston (30), between a first state in which the annular member (200) is not pressed, and a second state in which the annular member (200) is pressed to a base body (1) side. The first piston (21), the first cylinder chamber (40), the second cylinder chamber (50) and the second piston (30) are provided, so as to be arranged in the order of the first piston (21), the first cylinder chamber (40), the second cylinder chamber (50), and the second piston (30), along a first direction from the base body (1) side to an object-to-be-fixed (2) side.
B23Q 7/00 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
B23Q 3/00 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine
The workpiece support apparatus has: a case member that has an axial center and that is provided to a workpiece support part; a support member that is provided to the case member so as to be movable in the axial center direction and that has one end part projecting outwardly from the case member and supporting the workpiece so as to serve as a projection end part; a suction pad suctions the workpiece; an adjustment device that is provided between the support member and the case member in order to adjust contact pressure of the support member; an air intake path that sets the inside of the suction pad and that provides connection between a sucking port and an air intake port provided to suction and fix the projection end part to the workpiece; and a fixing device that fixes the support member to the case member.
A magnetic clamping device is provided with a magnetic force generating mechanism at which a housing cover body comprising soft magnetic material is arranged centrally at a hollow housing portion, a nonmagnetic metal frame body comprising a nonmagnetic body is made to engage with the outside circumference thereof, a plurality of arcuate nonreversible permanent magnets are arranged in annular fashion within an annular magnet housing space at the back of this nonmagnetic metal frame body, a reversible permanent magnet and a magnetic polarity switching coil disposed peripherally with respect thereto are provided at the back of the housing cover body, and a base cover body that blocks a back opening of the hollow housing portion is provided, the magnetic clamping device being characterized in that the metal frame body is joined in integral fashion to the housing cover body and the baseplate.
In order to achieve a workpiece support apparatus that performs suction and rigid body support at the same position, that attains compactness, and that can prevent chatter vibrations, the workpiece support apparatus has: a case member 3 that has an axial center 4 and that is provided to a workpiece support part 1 for supporting a workpiece 2; a support member 5 that is provided to the case member 3 so as to be movable in the axial center direction and that has one end part projecting outwardly from the case member 3 and supporting the workpiece 2 so as to serve as a projection end part 6; a suction pad 7 that is provided concentrically to the projection end part 6 and that suctions the workpiece 2; an adjustment device 8 that is provided between the support member 5 and the case member 3 in order to adjust contact pressure of the support member 5 with respect to the workpiece 2; an air intake path 9 that sets, to a negative pressure, the inside of the suction pad 7 contacting the workpiece 2 and that provides connection between a sucking port 11 provided to the case member 3 and an air intake port 10 provided to suction and fix the projection end part 6 to the workpiece 2; and a fixing device 13 that fixes the support member 5 to the case member 3 in a suction fixing state.
B23Q 3/02 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
B23Q 3/08 - Work-clamping means other than mechanically-actuated
B23Q 3/10 - Auxiliary devices, e.g. bolsters, extension members
a), and are capable of being changed over between locking positions and unlocking positions; and an annular fluid pressure cylinder (20) capable of changing over the positions of the plurality of steel balls (16); and a space is defined more radially inward than the plurality of steel balls (16) and the fluid pressure cylinder (20).
B25J 15/04 - Gripping heads with provision for the remote detachment or exchange of the head or parts thereof
B25J 19/00 - Accessories fitted to manipulators, e.g. for monitoring, for viewingSafety devices combined with or specially adapted for use in connection with manipulators
In the present invention, a cylinder body (110) comprises: a part (112A) embedded in a base body (2); a cylindrical shaft part (112B) projecting from the base body (2); and a flange part (112C) which is disposed opposite the cylindrical shaft part (112B) with respect to the base body (2) and which can be fixed to the base body (2). A tapered surface (112G) having a diameter decreasing toward the axial leading end of the cylindrical shaft part (112B) is formed in an outer circumferential section of the cylindrical shaft part (112B). An annular member (200) to be attached to a fixed object (1) includes, in an inner circumferential portion, an engagement part (210A) capable of horizontal positioning of the fixed object (1) by engaging with the tapered surface (112G). The annular member (200) can be driven so that the fixed object (1) abuts a reference surface of the base body (2).
In order to provide an inclined cylinder type clamp device including a fulcrum structure having a simple structure, an inclined cylinder type clamp device 1 in which a piston rod 7 is provided slidably in a cylinder hole 5 having an axis that is inclined downward to the front of a cylinder main body 4, a distal end portion of the piston rod 7 projects out from the cylinder hole 5 and a lower surface of the distal end portion constitutes a horizontal pressing surface portion 9, a piston 8 is provided in a rear end portion of the piston rod 7, and the inclined cylinder type clamp device 1 is provided with a rotary fulcrum portion 21 where the piston rod 7 rotates in a vertical direction: the rotary fulcrum portion 21 includes a cam block 22 provided in the cylinder hole 5, and a cam pin 24 which mates with an arcuate groove 23 formed in an upper surface of the piston rod 7; the cam block 22 includes an inclined surface 30 parallel to the inclined axis; and the cam pin 24 includes a sliding contact surface 38 which slides along the inclined surface 30.
In order to provide a magnetic clamping device with which magnetic flux does not readily decrease, and which is provided with a fluid-tight annular body, a magnetic clamping device (1) is provided with a magnetic force generating mechanism (3) in which an accommodating lid (6) comprising a soft magnetic material is disposed at the center of an accommodating cavity portion (4), a non-magnetic metal frame body (23) comprising a non-magnetic body is fitted onto an outer circumference thereof, a plurality of arc-shaped non-reversible permanent magnets (7) are disposed in an annular shape in an annular magnet accommodating space at the rear surface of the non-magnetic metal frame body (23), a reversible permanent magnet (8) is provided at the rear surface of the accommodating lid (6), with a magnetic pole switching coil (9) at the periphery thereof, and the magnetic force generating mechanism (3) is provided with a bottom surface lid (12) blocking a rear surface opening of the accommodating cavity portion (4), the magnetic clamping device (1) characterized in that the metal frame body (23) is joined integrally to a base plate (2) and to the accommodating lid (6).
In a mold conveyance trolley, a trolley body includes vertical first and second side plates, first and second structural frames capable of providing rigidity in vertical planes to the front portion and the rear portion of the trolley body; and a plurality of plate members intersecting the first and second structural frames; each of the first and second structural frames includes a plurality of linking members disposed at different height positions and linked to the first and second side plates, and a plurality of steel pipe members fitted over each of the plurality of linking members and have a spacer function.
B62B 3/02 - Hand carts having more than one axis carrying transport wheelsSteering devices thereforEquipment therefor involving parts being adjustable, collapsible, attachable, detachable, or convertible
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
B21D 37/04 - Movable or exchangeable mountings for tools
B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies
[Problem] To provide a mold-reversing device provided with a partially cylindrical cover member which is made of a metal plate and which, on the rear side of two mold-placing surfaces, covers the vicinity of an outer circumferential surface of a rotary body. [Solution] This mold-reversing device (1) capable of reversing a mold (M) by 90° and having: a base structure (10); a rotary body (20) having two mold-placing surfaces (21a, 21b) and rotatably supported on the base structure (10); and a rotation driving means (30) capable of rotating the rotary body (20) is provided with a partially cylindrical cover member (40) which, on the rear side of two mold-placing surfaces (21a, 21b), covers the vicinity of an outer circumferential surface of the rotary body (20). The cover member (40) is divided into first and second cover members (40a, 40b) by a slit (40s), wherein the first cover member (40a) is fixed to a rotary plate (24) and two cover-mounting plates (41, 42), and the second cover member (40b) is fixed to a rotary plate (25) and one cover-mounting plate (43).
B65G 7/08 - Devices adapted to be interposed between loads and the ground or floor, e.g. crowbars with means for assisting conveyance of loads for tilting the loads
B65G 47/248 - Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles by turning over or inverting them
B65G 47/90 - Devices for picking-up and depositing articles or materials
[Problem] To provide a robot arm coupling device configured so that a hydraulic pressure supply pipe, electric cable, etc., can be disposed in the central portion of a master plate and tool plate and do not protrude to the outside of the master plate and tool plate. [Solution] A locking mechanism (6) of a robot arm coupling device (1) is provided with: an engagement recess (3a) formed in a master plate (3); an engagement protrusion (4a) formed on a tool plate (4) so as to be insertable in the engagement recess (3a); multiple steel balls (16) that are fitted in the circumferential wall (15) of the engagement recess (3a) and can be switched between a locked position of engagement with an annular engagement part (4c), which is formed on the engagement protrusion (4a), and a disengaged unlocked position; and an annular hydraulic pressure cylinder (20) that is able to switch the multiple steel balls (16) from the unlocked position to the locked position. A space for disposing a hydraulic pressure supply pipe and electric cable is formed to the inside of the multiple steel balls (16) and the hydraulic pressure cylinder (20).
An injection machine which includes a mold falling prevention device that prevents a mold fixed to a mold fixing surface from falling off from the mold fixing surface and in which are provided a bottom edge restriction member at a lower portion of said mold fixing surface so that its vertical position is variable, for implementing restriction so that the bottom edge portion of the mold does not separate from the mold fixing surface, first and second intermediate restriction members at intermediate level portions of the mold fixing surface so that their horizontal positions are variable, for respectively implementing restrictions so that a one edge portion of the mold and an other edge portion thereof in the horizontal direction do not separate from the mold fixing surface, and a vertical direction position determination mechanism that receives and stops a bottom edge surface of the mold and determines a position of the mold in the vertical direction.
[Problem] To provide a mold attitude setting method and a mold attitude setting device for an injection molding machine with which the attitude of a mold can be easily and efficiently set during mold replacement. [Solution] A mold attitude setting method for an injection molding machine (1) comprises: a preparation step of preparing a mold attitude setting device (20) that sets the attitude of a mold set (M) when the mold set (M) is carried into an inter-platen space (14) and fixedly positioned on a platen board surface (11a); a mold carrying and fitting step of carrying the mold set (M) being suspended from hanging means (15) into the inter-platen space (14) and fitting a locating ring (13) of the mold set (M) into a fitting hole (11h) of the board surface; and a mold attitude setting step of using movement driving means (25), with the mold set (M) remaining suspended from the hanging means (15), to translate a mold end regulation member (21) toward the mold set (M) by way of guiding means (22) so as to contact an end surface of the mold set (M) in a surface contacting manner and to set the attitude of the mold set (M) in normal attitude.
[Problem] To provide a clamp system which is capable of fixing to-be-clamped sections, at two or more positions in the height direction, of a to-be-clamped object and which is capable of increasing the clamping force when necessary. [Solution] A clamp system (1) for fixing a to-be-clamped object (W) using a magnetic fixing means that is switchable between an attraction state and an attraction-release state is provided with: one or more magnetic fixing devices (2) each having, at the upper end thereof, a fixing surface (2a) that is located in a horizontal reference plane (H); and a plurality of columnar supports (3) which are attracted and fixed to the fixing surfaces (2a) and which fix the to-be-clamped object (W) to the one or more magnetic fixing devices (2), wherein the plurality of columnar supports (3) are designed to fix a plurality of corresponding to-be-clamped sections (4) which are at the lower end of the to-be-clamped object (W) and which are at two or more positions in the height direction relative to the fixing surfaces (2a), and the height dimension of each of the columnar supports (3) from the lower end to a support part (3a) thereof is set so as to be able to support the corresponding to-be-clamped section (4).
[Problem] To provide a mold reversing system that can carry out efficient separation and reversal when separating and reversing an upper mold from a mold set, for which mounting and support means for the mold set received by a mold reversing device from the outside can be omitted, and with which production costs can be reduced. [Solution] Provided is a mold reversing system (S) having mold reversing device (1) for receiving, separating, and reversing 180° a mold set (D), which includes an upper mold (D1) and a lower mold (D2), and a mold transport truck (70), the mold reversing device (1) being provided with: a base (10) having a pair of circular arc shaped rotating body support parts (11a, 11b) on both ends separated by a prescribed distance; a rotating body (20) that includes a pair of parallel rotating plates (20a, 20b) respectively supported so as to rotate freely on the pair of rotating body support parts (11a, 11b); a rotational drive mechanism (30) that can rotationally drive the rotating body (20); a top panel (50) provided in the upper part of the rotating body (20); a mold holding means (60) disposed raisably and lowerably on the lower side of the top panel (50) and capable of holding an upper mold or lower mold; and a mold raising and lowering means (62) provided on the top panel (50) and capable of driving the raising and lowering of the mold holding means (60). The mold transport truck (70) is constituted so as to be able to approach the mold receiving space (40) between the pair of rotating plates (20a, 20b) from a horizontal direction orthogonal to the center of the axis of rotation of the rotating body (20).
[Problem] To provide a fluid pressure cylinder device provided with a stroke end detecting function with high durability and reliability. [Solution] In a hydraulic cylinder device provided with a stroke end detecting function, a stroke end detecting means includes an insertion hole formed at a piston member and having a predetermined length, a mounting hole formed in a center part of a head side end wall, a mechanism chamber forming body having a fitting shaft portion fitted in the mounting hole, a first pipe of a non-magnetic material inserted through the fitting shaft portion to extend into the insertion hole to the proximity of the innermost end thereof, a second pipe of a non-magnetic material inserted through the fitting shaft portion to extend into the base end of the insertion hole, first and second reed switches and first and second harnesses mounted in the vicinities of the tip ends of the first and second pipes respectively, first and second resin sealing members filled in the first and second pipes respectively, and an annular permanent magnet mounted on the outer peripheral side of the base end of the insertion hole to face the insertion hole.
[Problem] To provide a die-carrying rolling platform that makes it possible to: reduce the weight of a rolling platform body; simplify the structure for attaching a roller conveyor, etc., to the rolling platform; and lower the cost of manufacture [Solution] A die-carrying rolling platform (20) that is self-propelled in a first direction and capable of carrying a die (3), wherein: a rolling platform body (23) is provided, on both end portions, with first and second end plates (26, 27) that have a vertical attitude orthogonal to the first direction, and first and second structural portions (28, 29) that are capable of exhibiting in-vertical-plane rigidity of a front part and a rear part of the rolling platform body (23), said rolling platform body (23) having a plurality of plate members (31, 32) in which at least a portion intersects the first and second structural portions (28, 29); and the first and second structural portions (28, 29) have a plurality of linking members (35) that link the first and second end plates (26, 27), and a plurality of steel pipe members (36) that are fitted over the plurality of linking members (35) and have a spacer function that defines a gap between the plurality of plate members (31, 32) through which the linking members (35) pass and a gap between the plate members (31, 32) and the first and second end plates (26, 27), said linking members (35) being arranged in parallel with the first direction and at different heights.
A slide lock device for a press machine in which a plurality of entry holes are formed in a flange portion of a flange member fixed on a shaft member, and that locks the shaft member not to rotate by a plurality of pin members inserted into and engaged with the plurality of entry holes, including an annular main body member fixed to a main body frame, a plurality of arcuate entry holes formed in the flange portion, an annular piston member installed within an annular cylinder bore formed in the main body member and shiftable along the axial direction, an annular first and second fluid pressure working chambers for driving the annular piston member, and adapted so that the plurality of pin members can be inserted into and through the entry holes and put into inserted positions by fluid pressure, and also can be backed out of the entry holes and changed over to retracted positions.
A hydraulic cylinder includes a rod insertion hole formed in a piston member, an auxiliary rod provided to a head side end wall member and capable of being inserted into the rod insertion hole, a rod fitting hole formed to pass through the head side end wall member and the auxiliary rod, a movable rod installed in the rod fitting hole and whose end portion toward a head side end wall projects to the exterior, a movement restriction mechanism that prohibits shifting of the movable rod in an unclamping state and permits shifting of the movable rod in a clamping state.
B23Q 3/08 - Work-clamping means other than mechanically-actuated
B25B 5/06 - Arrangements for positively actuating jaws
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F15B 15/28 - Means for indicating the position, e.g. end of stroke
B23Q 3/10 - Auxiliary devices, e.g. bolsters, extension members
The fluid clamp apparatus includes: a sliding piston member that vertically partitions its cylinder bore; first and second fluid pressure operation chambers; a fluid passage that, during an upward light-load stroke of the piston member, causes the back pressure in the second fluid pressure operation chamber to be received by the output rod to advance the output rod; a force multiplying mechanism that, during a heavy-load stroke of the piston member, multiplies the force acting on the piston member and transmits this force to the output rod; and a link mechanism that, during unclamping lowering operation of the piston member, links together the output rod and the piston member after lowering by a predetermined stroke amount.
[Problem] TO provide a mold falling prevention device whereby falling of a mold fixed to a mold fixing surface of an injection molding machine can be reliably prevented. [Solution] A mold falling prevention device (20) for preventing a mold (M) attached to a mold fixing surface (11a) of an injection molding machine from falling from the mold fixing surface (11a) is provided with: a bottom end restricting member (21) for restricting a bottom end part of the mold (M) so that the bottom end part does not separate from the mold fixing surface (11a), the bottom end restricting member (21) being furnished to a bottom part of the mold fixing surface (11a) so that position thereof in the vertical direction can be changed; first and second middle restricting members (22, 23) for restricting one end part and the other end part, respectively, in the horizontal direction of the mold (M) so that the one-end part and the other end part do not separate from the mold fixing surface (11a), the first and second middle restricting members (22, 23) being furnished to a middle part of the mold fixing surface (11a) so that the positions thereof in the horizontal direction can be changed; a one-end part locking member for the first middle restricting member (22); and an other-end part locking member for the second middle restricting member (23).
A fluid pressure cylinder comprises a rod insertion hole formed in a piston member, an auxiliary rod provided to a head side wall member so as to be inserted into the rod insertion hole, an open/shut valve mechanism for detection, and a fluid passage that is opened and shut by the open/shut valve mechanism. The open/shut valve mechanism includes a valve body reception hole formed in the auxiliary rod, a valve body that is movably held in the valve body reception hole and that has a recessed engagement portion on its external peripheral portion, and a spherical body mounted on the auxiliary rod so as to engage with the recessed engagement portion; when the piston member has reached a set shifting position, the valve body is changed over to the closed position or to the opened position due to cooperation between the spherical body, the recessed engagement portion, and the inner peripheral wall portion of the rod insertion hole.
B25B 5/06 - Arrangements for positively actuating jaws
F15B 15/06 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non-rectilinear movement
F15B 15/28 - Means for indicating the position, e.g. end of stroke
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
Provided is a balancer mechanism for a rotating shaft that can minimize displacement of the shaft center of a rotating shaft without augmenting a bearing member supporting the rotating shaft. A balancer mechanism (20) for a rotating shaft comprises an assist torque generating means (21) to generate assist torque to offset at least a portion of an unbalanced torque. The assist torque generating means (21) comprises a cam member (24) fixed to a rotating shaft (4), a cam follower member (25) that abuts and follows the cam member (24), and a gas spring (27) that applies the assist torque to the rotating shaft (4) via the cam follower member (25) and the cam member (24). The balancer mechanism is provided with a reactive force generating means (22) for generating a balancing moment that offsets a moment that inclines the rotating shaft (4) in a direction that separates the shaft from the assist torque generating means (21) around a bearing member (9) by way of the biasing force of the gas spring (27), wherein the reactive force generating means (22) is provided on the side approximately opposite to the assist torque generating means (21) with the rotating shaft (4) therebetween.
B23Q 1/72 - Auxiliary arrangementsInterconnections between auxiliary tables and movable machine elements
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
F16F 15/16 - Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid
34.
Compressed air driven reciprocating piston hydraulic pump
An air driven reciprocating piston hydraulic pump having a main changeover valve with a main valve body having an annular valve body portion which includes first and second annular valve faces that approach closely or contact first and second annular valve seats on valve cases which are formed on the upper and the lower ends of the annular valve body portion. An air intake chamber is defined by a piston reception hole and a drive piston portion, and an auxiliary changeover valve changes over the main changeover valve between its air supply position and its air discharge position by supplying compressed air to the air intake chamber or discharging air therefrom via a first and second valve members and a small diameter portion of a valve rod. A center side portion of the main valve body is made as a separate auxiliary valve body for facilitating up and down motion thereof.
F04B 17/00 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors
F04B 9/127 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting elastic-fluid motor, e.g. actuated in the other direction by gravity or a spring
A slide lock device for a press machine in which a plurality of inlet holes are formed in a flange part secured to a shaft member, and the shaft member can be non-rotatably locked by movably driving a plurality of pin members toward the flange part by fluid pressure and insertably fitting the pin members into the plurality of inlet holes; wherein the slide lock device is provided with an annular main body member secured to a main body frame, a plurality of arcuate inlet holes formed in the flange part, an annular piston member mounted so as to be capable of moving in an axial direction within an annular cylinder hole formed in the main body member, a plurality of pin members movably mounted in a plurality of holding holes in the annular piston, an annular first fluid pressure working chamber for driving the annular piston member to an advanced position, and a second fluid pressure working chamber for driving the annular piston member to a retracted position; the plurality of pin members being inserted through and positioned in the inlet holes by the fluid pressure of the first fluid pressure working chamber, and the plurality of pin members being capable of being switched to retracted positions, where the pin members are retracted from the inlet holes, via the annular piston member retractably driven by the fluid pressure of the second fluid pressure working chamber.
A positioning device capable of increasing the amount of diametrical expansion of an engagement member to be engaged in a cylindrical hole in a workpiece, and capable of performing positioning while not exerting any force on the workpiece in the downward direction positions a cylindrical hole (Ha) in a workpiece (W) in a first direction while permitting shifting thereof in a second direction, the device comprising: the insertion shaft member; a hydraulic cylinder for driving the insertion shaft member; a pair of engagement members; a taper engagement mechanism for shifting the engagement members to increase their diameter; and a movement permitting holding mechanism that, along with supporting the engagement members, so that they cannot shift in the first direction but are capable of shifting in the second direction.
A hydraulic cylinder is configured so that a position to be detected of a piston member is changeable and so that the most part of a position detection mechanism is disposed within the hydraulic cylinder. A hydraulic cylinder (5A) is provided with: a rod insertion hole (31) formed in a piston member (12) so as to be in communication with a hydraulic operation chamber (13a); an auxiliary rod (32) provided to a head-side end wall member (15) and insertable into the rod insertion hole (31); a rod mounting hole (34) formed so as to axially pass through both the head-side end wall member (15) and the auxiliary rod (32); a movable rod (35) mounted in the rod mounting hole (34) and having one end portion located on the head-side end wall side and protruding to the outside from the rod mounting hole (34); a movement restriction mechanism (36) configured so that when the lower end of the piston section (12a) is located in a first region, the movement restriction mechanism (36) prohibits the movable rod (35) from moving, and when the lower end of the piston section (12a) is located in a second region, the movement restriction mechanism (36) permits the movable rod (35) to move, allowing the movable piston (35) to protrude to the outside from the rod mounting hole (34) due to hydraulic pressure in the rod insertion hole (31); and a detection switch (37) for detecting whether or not the movable rod (35) has moved.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
A slide lock apparatus for a press machine includes: a flange member fixed over the shaft member for driving the slide, and having a flange portion; an annular main member fixed to the main frame, and having an annular member facing the flange portion; a plurality of reception holes formed in the annular member; a plurality of pin members installed in the plurality of reception holes so as to be shiftable therein; a plurality of actuators for driving the plurality of pin members between retracted positions and advanced positions penetrating into admission holes in the flange portion; a first locking member for locking the plurality of pin members in retracted positions; a first drive device for rotationally driving the first locking member; a second locking member for locking the plurality of pin members in their advanced positions; and a second drive device for rotationally driving the second locking member.
G05G 5/06 - Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
B30B 15/28 - Arrangements for preventing distortion of, or damage to, presses or parts thereof
In an object positioning/fixing device that positions and fixes a target object on a base member in the horizontal direction and in the vertical direction, a structure is provided in which, in a state in which the target object is pressed against the base member and fixed thereon by a fixation mechanism: first and second tapered engagement surfaces of first and second reference members are closely contacted against the inner circumferential surfaces of first and second annular engagement members via elastic deformation of the first and second annular engagement members; also first and second base end contact surfaces of the first and second reference members are contacted against the base member; and a pair of regulated surfaces of the second annular engagement member are closely contacted against a pair of regulating surfaces of a second installation hole via elastic deformation of the second annular engagement member.
An open/shut valve mechanism for detecting that a piston member of a hydraulic pressure cylinder has reached an unclamp position comprises: a valve body reception hole that communicates with a unclamp hydraulic pressure operating chamber, a valve body movably received in the valve body reception hole and having an annular concave engagement portion on its external circumferential portion; a spherical body that is movably installed in a cylinder main body and that can engage with the concave engagement portion; and an engagement portion that is formed on an auxiliary rod and with which the spherical body can engage; and when hydraulic pressure is charged into the unclamp hydraulic pressure operating chamber and the piston member has reached its unclamp position, the valve body receives the hydraulic pressure, a portion of the spherical body engages to the engagement portion and the valve body changes over to the valve closed position; and, when the piston member has shifted from its unclamp position, the spherical body engages with the annular concave engagement portion without engaging to the engagement portion, so that the valve body is held in its open position.
F15B 15/28 - Means for indicating the position, e.g. end of stroke
B23Q 3/08 - Work-clamping means other than mechanically-actuated
B23Q 17/00 - Arrangements for indicating or measuring on machine tools
B25B 5/06 - Arrangements for positively actuating jaws
F15B 15/06 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non-rectilinear movement
The purpose of the present invention is to adopt, in a clamp apparatus, a piston member that partitions the cylinder bore, and to make it possible for all of the force acting on the piston member due to fluid pressure to be boosted by a booster mechanism, and transmitted to the output rod. This fluid pressure-driven clamp apparatus (1) is provided with: a slidable piston member (7) that vertically partitions a cylinder bore (6); first and second fluid pressure action chambers (8, 9) formed to the lower side and the upper side of the piston member (7) in the cylinder bore (6); a pressure fluid passage (24) that, during an upward light-load stroke of the piston member (7) due to the fluid pressure of the first fluid pressure action chamber (8), causes the back pressure of the second fluid pressure action chamber (9) to be received by the output rod (4), in such a way that the output rod (4) is advanced by the back pressure; a booster mechanism (10) that, during a heavy-load stroke of the piston member (4) at the conclusion of an ascending operation, boosts the force acting on the piston member (7) with the fluid pressure of the first fluid pressure action chamber (8), and transmits the force to the output rod (4); and a linking mechanism (11) that, during unclamping through a descending operation of the piston member (7), links the output rod (4) and the piston member (7) subsequent to a prescribed stroke descent.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
In an object positioning and fixing device that positions and fixes a work pallet on a base member: a reference seating surface is formed on the base member; a contacting surface is formed on the work pallet; fitting cylindrical portions of a plurality of reference members are fixed in a plurality of fitting holes in the base member; a plurality of annular engagement members are installed in the work pallet; each of the reference members has an engagement projection; a base end contacting surface of the base end of the engagement projection is brought into contact with the reference seating surface so as to set the height position of the engagement projection; and the annular engagement member engaged over the outside of the engagement projection is elastically deformed in the radially outward direction so that it tightly contacts against the tapered engagement surface.
The present invention provides a positioning device capable of increasing the amount of diametrical expansion of an engaging member tightly attached to a cylindrical hole in a workpiece and a positioning device capable of performing positioning with no downward force exerted on the workpiece. [Solution] A positioning device (5) is provided with an insertion shaft member (57), a hydraulic cylinder (61), a pair of engaging members (58), a taper engaging mechanism (59), and a mobile holding mechanism (60). The positioning device (5) is capable of positioning a cylindrical hole (Ha) in a workpiece (W) in a first direction that is orthogonal to a vertical shaft core (B) of the insertion shaft member (57), the positioning device (5) allows the movement of the cylindrical hole (Ha) in a second direction that is orthogonal to the shaft core and the first direction. The hydraulic cylinder (61) is capable of driving the insertion shaft member (57) up and down. The taper engaging mechanism (59) moves the insertion shaft member (57) downward using the hydraulic cylinder (61), thereby moving the pair of engaging members (58) toward a diameter expansion side. The mobile holding mechanism (60) supports the pair of engaging member (58) so as to be incapable of moving down, and holds the pair of engaging members (58) so as to be incapable of moving in the first direction but capable of moving in the second direction.
B23Q 3/18 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for positioning only
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
A slide lock apparatus for locking the slide of a press machine is provided with: a flange member that is fixedly fitted over a shaft member that rotates in cooperation with the vertical operation of the slide, and has a flange part that is parallel to the plane perpendicular to the axis of the shaft member; a ring-shaped main member that is fixed to the main frame of the press machine, and has a ring-shaped member facing the flange part with a gap interposed therebetween; a plurality of retaining holes formed in the ring-shaped member; a plurality of pin members movably mounted in the plurality of retaining holes; a plurality of actuators capable of driving the plurality of pin members from a retracted position at which the pin members are not advanced toward the flange part to an advanced position at which the pin members are caused to advance to a state in which the pin members penetrate the introduction holes of the flange part; a first lock member capable of locking the plurality of pin members in the retracted position; a first drive means capable of rotatably driving the first lock member between a locked position and an unlocked position; a second lock member capable of locking the plurality of pin members in the advanced position; and a second drive means capable of rotatably driving the second lock member between a locked position and an unlocked position.
Provided is a fluid pressure cylinder capable of detecting, through the fluid pressure, that the piston member has moved to a set movement position, and of opening/closing a detection on/off-valve mechanism in linkage with the piston member. The fluid pressure cylinder (2) is provided with: a rod insertion hole (20) formed in the piston member (4); an auxiliary rod (7) provided to a head-side end wall member (10B) of a main cylinder body (10), the auxiliary rod (7) capable of being inserted into the rod insertion hole (20); a detection on/off valve mechanism (11); and a fluid channel (32) opened/closed by the detection on/off valve mechanism (11). The detection on/off valve mechanism (11) has: a valve body housing hole (35) formed in the auxiliary rod (7); a valve body (36) housed in the valve body housing hole (35), the valve body (36) having an engaging recess (37) on the outer peripheral part; and a sphere body (38) mounted on the auxiliary rod (7), the sphere body (38) capable of engaging with the engaging recess (37). When the piston member (4) moves to the set movement position, the sphere body (38), the engaging recess (37), and a rod insertion hole inner peripheral wall part (39) operate in coordination to switch the valve body (36) to the open-valve position or the closed-valve position.
A fluid pressure cylinder and a clamp device that, when an output member arrives at a prescribed position such as, in particular, an advance limit position or a retraction limit position, are capable of detecting the position of the output member on the basis of change of air pressure as, due to an opening/closing valve mechanism, the communication state of an air passage within the clamp main body is changed over together with the operation of the output member.
To provide a fluid pressure cylinder and a revolving clamp device in which it is possible to detect, through the fluid pressure, that the movement of a piston member has reached the movement limit position, to obtain a high operation reliability, and to obtain a coupling with a piston member and open/close a detection open/close valve mechanism using a simple configuration. A detection open/close valve mechanism (11) for detecting that a piston member (4) of a hydraulic cylinder (2) has reached the unclamp position, the detection open/close valve mechanism (11) being provided with: a valve body housing hole (35) communicating with an unclamping hydraulic operation chamber (12a); a valve body (36), which is movably housed in the valve body housing hole (35) and which has an annular engaging recess (37) on the outer peripheral part; a spherical body (38) which is movably mounted on a main cylinder body (10) and capable of engaging with the annular engaging recess (37); and an engaging part (39) which is formed on an auxiliary rod (7) and with which the spherical body (38) is able to engage. When hydraulic pressure is charged into the unclamping hydraulic operation chamber (12a) and the piston member (4) reaches the unclamp position, the valve body (36) receives the hydraulic pressure, a part of the spherical body (38) engages with the engaging part (39), and the valve body (36) switches to the closed position. When the piston member (4) moves from the unclamp position, the spherical body (38) engages with the annular engaging recess (37) without engaging with the engaging part (39), and the valve body (36) holds the open position.
F15B 15/06 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non-rectilinear movement
48.
COMPRESSED AIR DRIVEN RECIPROCATING PISTON HYDRAULIC PUMP
[Problem] A compressed air driven reciprocating piston hydraulic pump (P) comprises a main switching valve (42A) for switching the supply system for compressed air, and an auxiliary switching valve (42B) for switching the main switching valve (42A) across the air supply position and the air discharge position, but in some cases, the main switching valve (42A) is in a neutral position when a piston (14) is operating at an extremely low speed. [Solution] A first and second annular valve face (51, 52) is formed, on both the top and bottom ends of an annular valve body (43a) of a main valve (43), in close vicinity or in direct contact with a first and second annular valve seat (53, 54) on a valve case (31, 32) side, and an air inlet chamber (55) is formed by a piston accommodating hole (45) and a piston (46). The main switching valve (42A) is switched by the auxiliary switching valve (42B) supplying/discharging compressed air to/from the air inlet chamber (55). A central core portion of the main valve (43) is configured in an auxiliary valve (43A), the seal of a second valve member (57) is released by rapidly moving the auxiliary valve (43A) with low pressure compressed air, and the main valve (53) is switched.
F04B 9/12 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
A slide lock device to lock a machine press slide comprises: a flange member (12) orthogonally crossing the shaft center of a shaft member (11) and having a flange portion fixed to the shaft member; an annular body member (14) fixed to a body frame of the machine press and having a facing wall portion facing the flange portion with a gap therebetween; a plurality of retaining holes (15) formed in the facing wall and facing the flange portion; a plurality of pin members (16) slidably inserted in each retaining hole; a plurality of actuators (17) for driving, respectively, pin members over a span between an advanced position, which is advanced toward the flange portion, and a retracted position; and arcuate insertion portions formed, respectively, in gaps between a plurality of abutting engagement portions, formed in the circumferential direction of the flange portion, and neighboring abutting engagement portions; and is configured so that at least one of the pin members is inserted into any of the insertion portions and can stop the abutting engagement portion at the end of that insertion portion when the pin members are respectively driven toward the advanced positions in order to lock the slide.
[Problem] To provide an object positioning/fixing device that is capable of improving positioning accuracy of a work pallet in the horizontal direction and absorbing an error between an inter-axial distance between first and second reference members and an inter-axial distance between first and second annular engagement members. [Solution] The object positioning/fixing device (1) is for positioning and fixing a target object (3) vertically on a base member (2) with respect to a horizontal direction, and is configured such that when in a state in which the target object (3) is fixed to the base member (2) by being pressed by means of fixation mechanisms (9), first and second tapered engagement surfaces (31a, 41a) of first and second reference members (31, 41) are in close contact with the inner peripheries of first and second annular engagement members (51, 61) through elastic deformation of the first and second annular engagement members (51, 61), first and second base contact surfaces (34, 44) of the first and second reference members (31, 41) are in contact with the base member (2), and a pair of surfaces to be regulated (61b) of the second annular engagement member (61) are in close contact with a pair of regulating surfaces (16a) of a second attachment hole (16) through elastic deformation of the second annular engagement member (61).
In order to provide an object positioning and fixing device whereby precision of positioning in the horizontal direction can be increased, the structure of a reference member can be simplified/reduced in size, and production cost can be reduced, a configuration is adopted whereby a reference seating surface (5) is formed on a top surface of a base member (2) a contacting surface (3a) capable of coming in contact with the reference seating surface (5) is formed on a work pallet (3), fitting pegs of a plurality of reference members (10, 20) are fitted and fixed in a plurality of fitting holes formed in the base member (2), a plurality of annular engaging members are mounted in a plurality of mounting holes of the work pallet (3), an engaging projection (13, 23) having an outside diameter larger than that of the fitting pegs, and a tapered engaging surface (10a, 20a) on an external peripheral surface thereof are formed on each of the plurality of reference members (10, 20), a proximal-end contacting surface (15) of the engaging projection (13, 23) is brought into contact with the reference seating surface (5) to set the height position of the engaging projection (13, 23), and an annular engaging member (30, 40) is fitted over the engaging projection (13, 23) and elastically deformed outward in the radial direction, and closely fitted against the tapered engaging surface (10a, 20a).
The purpose of the present invention is to provide a fluid cylinder and clamp device capable of reliably detecting through changes in air pressure in an air passage within a main clamp the arrival of an output member at a prescribed position, and that have outstanding reliability and durability and that can be miniaturized. [Solution] In the present invention the following are provided: an air passage formed within the main cylinder of a hydraulic cylinder, where one end of the air passage is supplied with pressurized air and the other end is in communication with the outside; and an opening and closing valve mechanism that can open the air passage. The opening and closing valve mechanism is provided with the following: a valve mounted so that the valve can be moved forward and backward, one end of which projects into a hydraulic chamber; a valve seat with which the valve can come into contact; an oil pressure introduction chamber that maintains the valve in a state in which the valve is made to advance toward an output member by means of the oil pressure in the hydraulic chamber; and an oil pressure introduction path that brings the hydraulic chamber into communication with the oil pressure introduction chamber. When the output member arrives at a prescribed position, the valve is shifted by the output member to switch the open or closed state of the opening and closing valve mechanism, making it possible to detect that the output member has arrived at a prescribed position on the basis of the air pressure in the air passage.
A clamp device includes a clamp main body, an engagement assembly, a clamp rod, a drive mechanism, and a support mechanism. The engagement assembly can be changed over between a diameter-expanded state in which it engages with an inner circumferential surface of an aperture in a workpiece, and a diameter-reduced state in which it does not so engage. The clamp rod is engaged with an interior of the engagement assembly. The drive mechanism drives the clamp rod to and from the clamp main body. The support mechanism supports the engagement assembly with a pneumatic force of pressurized air. At least a part of the pneumatic force is released after the engagement assembly has been expanded in diameter.
A seal part gets worn or damaged by a bending moment originating from an external force applied to an output rod of a gas spring, and the durability of the gas spring decreases. A gas spring (12) has a cylinder body (20), a gas-accommodating chamber (21), an output rod (22) subjected to gas pressure, and a seal member (24) attached to an inner peripheral part of a rod insertion hole on the cylinder body (20), the seal member adapted for providing a seal between the cylinder body (20) and the output rod (22). The gas spring (12) is further provided with: a guide mechanism (27) having a guide cylinder (28) for guiding the output rod (22), the guide cylinder extending integrally toward the side where the output rod is moved forward from an end part of the cylinder body (20); and a guide rod (22b). The guide rod is formed on an output end side portion of the output rod (22) and is slidably attached to the guide cylinder (28). The guide rod protrudes to the outside from the rod insertion hole (29) of the guide cylinder (28). The guide rod is formed longer than the maximum stroke of the advancing/withdrawing motion made by the output rod (22).
F16F 9/00 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
F16F 9/32 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium Details
F16F 9/36 - Special sealings, including sealings or guides for piston-rods
A clamping device increases the diameter of a gripping assembly that is inserted into a hole in a workpiece and thus grips the inner circumferential surface of the hole, and particularly relates to such a clamping device that is adapted so that, in the vicinity of a scraper, no clearance occurs between the gripping assembly and a clamp rod, and the scraper. The clamping device is capable of enhancing the durability of a scraper, reducing the amount of pressurized air consumed by blowing, and ensuring the strength of a clamp rod against pulling and so on.
Provided is a rod position detection device configured to be compact by reducing a detection space which extends in the axial direction and is required to detect the position of a clamp rod, the rod position detection device utilizing a pressurized fluid to detect the position of the clamp rod and having improved position detection accuracy. A rod position detection device (7) comprises: a rod support member (30) provided and affixed to a clamp body (2); a detection rod (35) which is mounted to the rod support member (30) so as to be rotatable about the axis and the amount of movement of which in the axial direction is restricted; and a rod interlock mechanism (40) for causing the clamp rod (3) and the detection rod (35) to be interlocked with each other so that the clamp rod (3) and the detection rod (35) can move relative to each other in the axial direction and so that the detection rod (35) rotates in association with the forward and backward movement of the clamp rod (3). The rod position detection device (7) is configured so as to be able to detect the position of the clamp rod (3) from the position of the detection rod (35) in the rotational direction thereof.
A clamp device has a gripping member which is expandable and contractible and is inserted into an aperture in a workpiece and grips the aperture, a clamp rod including a tapered shaft portion that fits into the gripping member, and a drive means for driving the clamp rod forwards and backwards. Provided is a support mechanism that supports the gripping member by fluid pressure when the gripping member is radially expanded, and a fluid pressure release means that releases the fluid pressure of the support mechanism after radial expansion of the gripping member when the clamp rod is driven by the drive means to perform clamping. The support mechanism has an annular pressure reception member that supports the gripping member, and a supporting fluid chamber that causes fluid pressure in the direction opposite to the clamping direction to be received on the annular pressure reception member.
A clamp device (C) has a cylindrical clamp body (1), a grip member (3) capable of being inserted into an insertion hole (11a) at the tip portion of the cylindrical clamp body (1), expanding outwards, and gripping the inner circumference surface of a hole (H) of a workpiece (W), a clamp rod (4) which, engaged with said grip member (3), extends in the vertical direction, and a forwards/backwards driving mechanism (5) capable of driving the clamp rod (4) forwards and backwards. Said clamp device is also provided with a seating surface (14) on which a workpiece formed at the tip of the cylindrical clamp body (1) sits, a case member (2) supporting the cylindrical clamp body (1) so as to allow movement forwards and backwards, a raising/lowering driving mechanism (7) capable of raising and lowering in a direction parallel with the shaft center of the clamp rod (4) the cylindrical clamp body (1) relative to the case member (2), and a lock mechanism (9) having a cylindrical member (91) into which the cylindrical clamp body (1) can be slidably inserted and which is supported by the case member (2), and capable of locking the outer circumferential surface of the cylindrical clamp body (1) by elastically deforming the cylindrical member (91) towards the side with the reduced diameter.
The ejector device of a molding machine includes: an ejector plate; an ejector drive means for driving the ejector plate in directions to approach towards and to withdraw from a platen; a plurality of rod insertion holes formed so as to pierce through the platen; and a plurality of ejector rods or a plurality of base rods which are base end portions of ejector rods that are inserted into the plurality of rod insertion holes so as to slide freely therein; and a plurality of magnetic rod fixing mechanisms capable of removably fixing the plurality of ejector rods to the ejector plate, or of removably fixing the plurality of detachable rods to the tip end portions of the base rods which are fixed to the ejector plate.
A burden of exchanging ejector rods is reduced in an injection molding machine when exchanging rods during exchange of a die. A plurality of rod insertion holes are formed so as to pierce through a movable platen. A plurality of ejector rods are inserted into rod insertion holes so as to slide freely therein. An ejector plate is disposed at the rear side of the movable platen. In a plurality of the ejector rods, a plurality of base rods are inserted into rod insertion holes so as to slide freely therein. Their base end portions are fixed to the ejector plate. Detachable rods are removably stuck with magnetism to the base rods by first and second magnets.
Disclosed is a metal mold positioning and fixing device which positions a metal mold (M) on a board surface (2a) of a board member (2), in the directions parallel and orthogonal to the board surface, and fixes the mold thereto. In the device: the metal mold and the board member are provided with a first positioning mechanism which positions the metal mold in the direction parallel to the board surface, a second positioning mechanism for positioning, which is arranged in a position separated from the first positioning mechanism, and an orthogonal direction positioning mechanism which positions the metal mold in the direction orthogonal to the board surface; each of the positioning mechanisms are provided with tapered engaging protrusions (12, 22) on the board member side, and annular engagement sections (31, 41) which are provided on the metal mold side and which can engage with the tapered engaging protrusions. The device is provided with a plurality of bolt holes (13, 23) formed on the board member side, a plurality of bolt insertion holes (7a) formed on the metal mold side, and a plurality of bolts for clamping which can be inserted into the respective insertion holes and screwed into the respective bolt holes; and the device is formed such that annular engagement sections (31, 41) are each elastically deformed toward the outer diameter expansion side due to the fastening of the bolts for clamping, and thus are adhered to the tapered engaging protrusions (12, 22).
Disclosed is a pallet positioning device (1) wherein a pallet (3) is positioned and fixed to a base member (2) in the horizontal direction and the vertical direction. In this pallet positioning device (1), the base member (2) is provided with a first reference member (10) for positioning the pallet (3), a second reference member (20) for restricting rotation about the shaft center of the first reference member (10), and a reference bearing surface (5) for positioning the pallet (3) in the vertical direction. The flange sections (11, 21) of the first and second reference members (10, 20) are fixed to the base member (2) with bolts (14, 24). First and second tapered engaging surfaces (18, 28) are formed on the outer peripheral portions of engaging protrusions (12, 22) of the first and second reference members (10, 20). Annular engaging sections of annular engaging members of the workpiece pallet (3) are engaged with the first and second tapered engaging surfaces (18, 28) of the engaging protrusions (12, 22). Clamping bolts (4) are inserted through bolt insertion holes (7) in the workpiece pallet (3), and are threadably engaged with bolt holes (13, 23) of the engaging protrusions (12, 22), with the consequence that the annular engaging members are elastically deformed in such a way as to expand the outside diameters, resulting in the annular engaging members being engaged with the first and second tapered engaging surfaces (18, 28) in a close contact state.
A clamp device configured so that, when an engagement member is expanded in diameter, the clamp device supports the engagement member by the force of pressurized air and so that, after the engagement member is expanded in diameter, at least a part of the force can be released, wherein the force of pressurized air for blowing is prevented from acting on an annular pressure receiving member of a support mechanism after the engagement member is expanded in diameter. A clamp device (C) is provided with: a clamp body (1); an engagement member (2) which can be switched between an expanded-diameter state in which the engagement member (2) engages with the inner peripheral surface of a hole in a workpiece (W) and a reduced-diameter state in which the engagement member (2) does not engage with the inner peripheral surface; a clamp rod (3) which is being engaged with the inside of the engagement member (2); a drive means (4) for driving the clamp rod (3) in such a manner that the clamp rod (3) advances and retracts relative to the clamp body (1); a support mechanism (6) which, when the engagement member (2) is expanded in diameter and engaged with the inner peripheral surface, supports the engagement member (2) by the force of pressurized air having a first pressure; and a pressurized air force release means (7) which, when the clamp rod is driven, for clamping, by the drive means, releases at least a part of the air force of the support mechanism (6) after the engagement member (2) is expanded in diameter.
A clamping device (C) comprises a clamp body (1), a gripping member (2), a clamp rod (3), a scraper (26), and a drive means (5). The gripping member (2) is composed of one or more grip forming members (21) which are located on the outer peripheral side of the clamp rod (3). The clamp rod (3) is provided with an intermediate stage rod section (33) which is an intermediate stage portion of the clamp rod (3); and a tapered section (34) which is formed in the upper end portion of the clamp rod (3), this upper end portion extending upward from this intermediate stage rod section (33), and the outside diameter of this tapered section (34) increasing toward the upper portion thereof, and which is capable of driving the one or more grip forming members (21) in the direction of enlarging the outside diameter thereof. The tapered section (34) comprises one or more tapered flat surfaces (35) which are abutted in a surface contact manner by one or more grip claw sections (22) of the one or more grip forming members (21); and one or more partial conical surfaces (36) which are formed between the lower edges of the one or more tapered flat surfaces (35), and the radii of which increase toward the upper portion. In the vicinity of the scraper (26), a cross section which consists of the cross section of the clamp rod and the cross sections of the one or more grip forming members and which perpendicularly intersects the axis of the clamp rod, is formed to a circular shape.
In the disclosed work pallet positioning and affixing device (1), which positions a work pallet (3) over a base member (2) in the horizontal direction and the vertical direction and affixes the work pallet (3) to the base member (2): the base member (2) is provided with a first reference member (10) for positioning, a second reference member (20) for rotational regulation around the center axis of the first reference member (10), and a reference bearing surface (5) for vertical positioning; bolt-head accommodating holes (15a, 25a) of bolt holes for four bolts (14, 24) that affix the flange sections (11, 21) of the first and second reference members (10, 20) are formed partially overlapping engaging protrusions (12, 22) in a plan view; and as a result, a plurality of tapered engaging surfaces (18, 28) are formed that are in the state of being segmented into four sections and that are on the outer periphery of the engaging protrusions (12, 22). Annular engaging sections of annular engaging members on the side of the work pallet (3) are caused to engage the plurality of tapered engaging surfaces (18, 28) of the engaging protrusions (12, 22); bolts (4) for clamping are inserted into bolt insertion holes (7) of the work pallet (3) and threaded into the bolt holes (13, 23) of the engaging protrusions (12, 22); and as a result, the annular engaging sections are caused to deform elastically in the direction of outer diameter expansion, causing the annular engaging sections to closely engage the plurality of tapered engaging surfaces (18, 28).
Disclosed is a clamping device (1) which drives a clamp rod (10) in the direction of a clamp body (30) so as to anchor an object (W). The clamp rod (10) comprises four annular engagement sections (14) in the axial direction. The clamp body (30) comprises four collet members (34) which are annularly disposed so as to form part of a rod insertion hole (31), are capable of radially expanding/contracting through parallel movement, each having four annular pressing sections (64) in the axial direction; a hydraulic cylinder (33) for driving the four collet members (34) and the clamp rod (10) in the insertion direction; and a first guide mechanism (35) which, at the time of driving, guides the four collet members (34) in such a way that the four collet members (34) radially contract and the multiple annular pressing sections (64) engage with the four annular engagement sections (14) from above, and at the time of clamp release, guides the four collet members (34) in such a way that the four collet members (34) radially expand and the four annular pressing sections (64) are separated from the four annular engagement sections (14).
A clamp device has a grip member for gripping the inner peripheral surface of a hole in a workpiece, a clamp rod having a tapered shaft portion that is fitted into and engaged with the grip member, a hydraulic cylinder for driving the grip member and the clamp rod forwards and backwards in the axial direction, and a main body member to which the above elements are mounted. A tubular cylindrical main body portion projecting upwards is provided at the center portion of an upper half portion of the main body member. The outer diameter of this tubular main body portion is set less than or equal to three times the outer diameter of the grip member in the unclamped state, and, in the unclamped state, the upper half portions of the grip member and the tapered shaft portion are made to project outward from the upper end of the tubular main body portion.
A gas spring (1) is provided with a cylinder body (12), a gas chamber (17) disposed in the cylinder body (12) and filled with compressed gas, a rod member (14) which is capable of advancing and retreating relative to the cylinder body (12) and which extends away from the cylinder body (12) upon receiving the gas pressure of the gas chamber (17). Also provided is a sleeve member (13) which is fitted rotatably and gas-tight in a sleeve mounting hole (12c) formed on the rod-side end wall (12a) of the cylinder body (12), and which is fitted rotatably and gas-tight around the aforementioned rod member (14) to allow sliding in the length direction of the rod member (14). Further provided are a rotation restriction mechanism (15) which restricts the rod member (14) from rotating, and a rotation driving means (16) for driving the rotation of the aforementioned sleeve member (13).
A knockout device (10) which drives an upper die unit for punching a printed board is, in order to reduce the frictional force acting on a movable pad, reduce the wear between the outer peripheral surface of the movable pad and the inner peripheral surface of a containing hole, and improve the performance of punching the printed board, provided with: body members (11, 13) which are fixed to the lower end of a slide (2); a guide hole (14) which is bored in the annular body member (13); a movable pad (16) mounted in the guide hole (14) in a vertically movable manner; a hydraulic cylinder (17) which is formed at the annular body member (13) and the movable pad (16) and capable of driving the movable pad (16) to move downward; and a plurality of spring mechanisms (18) which elastically press the movable pad (16) upward to the upper limit position. The outer peripheral surface of the movable pad (16) is formed as a polygonal cylinder surface (16a) having a regular-octagonal cross section, and the respective ridge line parts and the vicinities thereof form partially circularly-cylindrical surfaces (7) so that at least two of the partially circularly-cylindrical surfaces (7) are constantly in sliding contact with the inner peripheral surface of a guide hole (6).
A clamp device includes a support mechanism that supports a grip member when expanding the diameter thereof, a clamping hydraulic cylinder that can drive the grip member and a clamp rod axially forwards and backwards (up and down), and a main body member to which the grip member, the clamp rod, the support mechanism, and the clamping hydraulic cylinder are mounted, with the grip member, the clamp rod, and the support mechanism being positioned at one end portion of the body member, and with the common axis of the grip member and the clamp rod being offset from the axis of the clamping hydraulic cylinder in a direction orthogonal to the clamp rod.
An article positioning mechanism (10) configured in such a manner that, in order to position an article comprising a part or a tool to a mounting section (2) of a movable member of a machine device and to restrain the article from rotating, the article positioning mechanism (10) is provided with a holder member (11) to which the article is affixed and a frame-shaped member (12) which is affixed to the mounting section. The holder member (11) is provided with a restriction surface (17) for positioning, and also with a tapered engaging male section (18) which is formed in a regular polygon and is sloped in such a manner that the closer the tapered engaging male section (18) is to the mounting section side, the closer the tapered engaging male section (18) is to an axis (2a). The frame-shaped member (12) is provided with a reference surface (37) which receives the restriction surface (17) for positioning and positions the restriction surface (17) in the axis direction, and also with a tapered engaging female section (38) which is formed in a regular polygon and is sloped in the same direction as the tapered engaging male section (18). When affixing the holder member (11) to the mounting section (2) by an affixing means (4), the tapered engaging male section (18) is engaged with the tapered engaging female section (38) in a closely contacting manner by means of elastic deformation of the outer peripheral wall section (12a) of the tapered engaging female section (38) in the radial direction extending away from the axis (2a) and in the direction approaching the mounting section (2).
Provided is a clamp device which comprises a clam body (1), a grip member (2) which is expandable and contractible in a radial direction and which is inserted in a hole of a workpiece and can grip an inner peripheral surface of the hole, a clamp rod (3) which includes a tapered shaft portion fitted and engaged in the grip member (2), and a drive means (4) for moving the clamp rod (3) forwardly and backwardly. The clamp device is provided with a support mechanism (5) which supports the grip member (2) by a fluid pressure when the grip member (2) is expanded, and a fluid pressure releasing means for releasing the entirety or a part of the fluid pressure of the support mechanism (5) after the expansion of the grip member (2) when the clamp rod (3) is driven by the drive means (4). The support mechanism (5) comprises an annular pressure receiving member (51) which supports a base end of the grip member (2), and a support fluid chamber (52) which causes an annular cylindrical portion (53) of the annular pressure receiving member (51) to receive the fluid pressure in a direction opposite to the clamping direction.
A clamp device includes an annular grip member capable of being inserted into an hole in a workpiece and of gripping the inner circumferential surface of the hole, a clamp rod having a tapered shaft portion fitted inside the grip member and engaged therewith, a hydraulic cylinder capable of axially advancing and retracting the grip member and the clamp rod, and a clamp main body member. The clamp device is provided with seating surfaces formed upon the clamp main body member, on which the workpiece is seated, and a poor clamping detection mechanism that detects poor clamping, in the state in which the grip member is driven in its clamping direction by the hydraulic cylinder via the clamp rod, and the workpiece is in its state of being seated upon the seating surfaces.
A clamp device includes a grip member, a clamp rod, and a hydraulic cylinder, and, by the grip member being inserted into an hole in a workpiece, it can grip the inner circumferential surface of the hole. The clamp device is provided with: a main body member; seating surfaces formed upon the main body member, upon which the workpiece is seated; a seating sensor that includes a pressurized air ejection hole opening to the seating surfaces; and a workpiece mounting surface that can receive and stop a workpiece at a position that is more advanced than the seating surfaces when the grip member is at an advanced position (its unclamped state), and that shifts together with the grip member during clamp operation when the grip member and the clamp rod shift towards retraction.
A positioning and fixing device positions a work pallet in the vertical and horizontal directions relative to a base member via a ring member, and also restricts its rotation around the vertical axis. The base member has Z reference surfaces that can stop a lower end reference surface of the ring member and position it in the vertical direction, and a tapered male engagement portion whose horizontal cross section is formed as a regular polygon having a plurality of outwardly convex circular arcuate vertex portions and a plurality of side portions, and that reduces in diameter upwards. The ring member has a tapered female engagement portion that can engage with the tapered male engagement portion so that its lower end reference surface is in contact against the Z reference surfaces. A clamp mechanism for fixing the ring member to the base member is provided, and the side portions of at least one of the tapered female engagement portion and the tapered male engagement portion are adapted to engage in close contact with the other via elastic deformation.
A fluid passage connection device includes a positioning mechanism that incorporates a male coupler attached to a stationary base member and a female coupler attached to a movable member, and that positions the movable member with respect to the base member so that it becomes possible to connect the male and female couplers, and a clamping mechanism that drives the movable member in order to clamp and fix the movable member with respect to the base member by the elastic force of a spring, and that also releases this clamping with the hydraulic pressure of a hydraulic cylinder; and the male coupler has a connection sleeve that is driven to retract by hydraulic pressure and is driven to advance by a spring, with a hydraulic passage being provided that interconnects a hydraulic pressure operation chamber of the connection sleeve and an unclamping hydraulic chamber of the hydraulic cylinder.
B23Q 3/00 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine
F16L 37/36 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings with two lift valves being actuated to initiate the flow through the coupling after the two coupling parts are locked against withdrawal
E03B 1/00 - Methods or layout of installations for water supply
A tool fixing device comprising a gas spring (20) provided with: a cylinder member (21) which is mounted to a main spindle (2) so as to be movable in the axis direction; a rod member (22) which has a piston (22a) contained in the cylinder member (21) and which also has a rod (22b) extending from the piston (22a) to the tip side of the main spindle; and a gas operation chamber (23) which is formed inside the cylinder member (21) so as to be located further toward the base end side of the main spindle than the piston (22a) and which has compressed gas (G) contained therein. The tool fixing device also comprises: a chuck cylinder connection mechanism (30) which connects the cylinder member (21) and a load input section (10a) of a chuck mechanism (10); and a rod member fixing mechanism (40) which fixes the rod member (22) to the main spindle (2) in such a manner that the rod member (22) does not move to at least the tip side of the main spindle.
A hydraulic pressure generation device (30) has a body case (31), a pair of plunger pumps (50A, 50B) vertically mounted in the body case and respectively having discharge openings at the lower ends of the plunger pumps, a common drive shaft (71) for driving the pair of plunger pumps, an electric motor (90) provided with a reduction gear and rotationally driving the drive shaft, and a pair of cam mechanisms (60A, 60B) connected to the drive shaft and driving the pair of plunger pumps. The pair of cam mechanisms has follower rollers (61A, 61B) rotatably mounted on the upper ends of plunger members (51A, 51B) of the plunger pumps by means of horizontal support pins, and also has cam members (63A, 63B) mounted on the drive shaft and having outer peripheral cam surfaces making contact with the upper ends of the outer peripheral surfaces of the follower rollers. The pair of cam mechanisms is adapted such that the timings of the top dead centers of the two plunger members are different by 90 degrees or more in terms of the angle of rotation of the drive shaft.
F04B 23/06 - Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
F04B 1/02 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
F04B 7/04 - Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
A hydraulic pressure generation device (1) has hydraulic pressure generation means (2) for generating low hydraulic pressure, and also has hydraulic pressure generation means (30) for generating high hydraulic pressure. The hydraulic pressure generation means (30) has a body case (31), a plunger pump (50) vertically mounted in the body case, a cam mechanism (60) including a follower roller (61) and a cam member (63), and an electric motor (90) for rotationally driving a support shaft penetrating and fixed to the cam member. The hydraulic pressure generation device (1) further has a pressurized oil receiving chamber (40) and a communication path (56). The pressurized oil receiving chamber (40) is formed at a portion on the outer peripheral side of the plunger pump in the body case and contains pressurized oil. The communication path (56) interconnects a plunger hole of the plunger pump and the pressurized oil receiving chamber when a plunger member is at the top dead center, and the communication path (56) interrupts the connection when the plunger member descends a predetermined amount of stroke from the top dead center. Hydraulic pressure generated by the hydraulic pressure generation means (2) is supplied to the pressurized oil receiving chamber.
F04B 23/10 - Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
F04B 7/04 - Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
F04B 53/12 - ValvesArrangement of valves arranged in or on pistons
Each of a plurality of injection molding machines is provided with clamp plates fixed on platens and a plurality of magnet units to generate magnetic force for fixing a mold to the clamp plate fitted on the clamp plates; and the plurality of injection molding machines are provided with a plurality of common connectors having the same structure, each of which is electrically connected to the magnetic unit, a molding machine control unit and a power source device; and the mold fixing system comprises a set of operation control units to be shared by the plurality of injection molding machines, and when a mold is to be exchanged in any of the injection molding machines, the plurality of magnet units are switched to the non-adsorbing state or the adsorbing state via the operation control unit in the state where the operation control unit is connected to the common connector of the injection molding machine.
A device for generating hydraulic pressure for unclamping a clamp mechanism for clamping a tool holder on the main spindle of a machine tool, which has increased accuracy of stopping of a cam member of a cam mechanism for driving the hydraulic pressure generation device, which can be rotated at high speed, and which can be driven by a small-sized electric motor having no brake mechanism or servo mechanism. The unclamping hydraulic pressure generation device (30) has a plunger pump (50), a cam mechanism (60) including a driven roller (61) on the plunger member (51) side of the plunger pump and also including a cam member (63) having an outer peripheral cam surface (64) in contact with the driven roller (61), an electric motor (90) having a reduction gear and rotationally driving the cam member (63), a first recess (65) formed in that part of the outer peripheral cam surface (64) of the cam member (63) which engages with the driven roller (61) when the plunger member (51) reaches the top dead center, and a second recess (66) formed in that part of the outer peripheral cam surface (64) which engages with the driven roller (61) when the plunger member (51) reaches the bottom dead center.
B23B 31/117 - Retention by friction only, e.g. using springs, resilient sleeves, tapers
F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
82.
METAL MOLD ADHERENCE DETECTOR FOR INJECTION MOLDING MACHINE
Metal mold adherence detectors (30A, 30B) are applicable to an injection molding machine (1) having clamp plates (10A, 10B) each of which includes a fixing surface (12a) for fixing a metal mold M2 and multiple sets of magnetic force generator mechanisms (13) capable of generating the magnetic force for fixing the metal mold. The metal mold adherence detectors (30A, 30B) are provided with electrodes (31a, 32a) which can be adhered to the metal mold M, a resilient member (41) for resiliently biasing the electrodes in the direction of adherence to the metal mold M2, an insulation member (43) for insulating the electrodes, an electrical detection circuit (50) which is configured including the electrodes and the metal mold M2 and is connected with a power supply, and a detection means (65) which has a detection section (61) partly in connection with the electrical detection circuit (50) and detects adherence of the metal mold to the metal mold fixing surface. The presence or absence of adherence of the metal mold M to the metal mold fixing surface can be detected accurately, simply and reliably using the electrical detection circuit configured including the metal mold M.
A clamp device (C) has a grip member (2) for gripping the inner peripheral surface of a hole (H) in a workpiece (W), a clamp rod (3) having a tapered shaft section (31) fitted in and engaged with the grip member (2), a hydraulic cylinder (4) for extending and retracting the grip member (2) and the clamp rod (3) in the axis direction, and a body member (1) to which the above-described elements are mounted. A circular tube-like body tube section (11a) projecting upward is provided at the center of an upper half section of the body member (1). The outer diameter of the body tube section (11a) is set equal to or less than three times the outer diameter of the grip member (2) in an unclamp state, and in the unclamp state, the upper half section of the grip member (2) and the tapered shaft section (31) are made to project outward from the upper end of the body tube section (11a).
The magnetic fixing device comprises a clamping plate having a fixing surface to which a clamping object is fixed and plural magnetic force generation mechanisms. The magnetic force generation mechanisms each comprise a magnetic material member facing the fixing surface, plural permanent magnets arranged around the outer periphery of the magnetic material member, a first Alnico magnet placed on the back of the magnetic material member, and a first coil for switching the polarity of the first Alnico magnet, and can be switched between the absorption state in which the clamping object is adsorbed and the non-absorption state in which the clamping object is not adsorbed. An operation state indication mechanism capable of presenting an indicator indicating that the plural magnetic force generation mechanisms are in the absorption state or in the non-absorption state is provided on the fixing surface or outer periphery of the clamping plate.
H01F 7/20 - ElectromagnetsActuators including electromagnets without armatures
H01F 1/00 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties
H01H 47/00 - Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
85.
Fixing structure of spindle balancer for machine tool technical field
A fixing structure of a spindle balancer for a machine tool is described as having a flange member having a supported surface and provided fixedly to a cylinder body of a gas spring, a supporting member having a flange receiving surface and a fixing hole, and secured to the spindle head of a machine tool, and a plurality of fastening members for fastening the flange member to the supporting member so as to allow the supported surface of the flange member to abut against the flange receiving surface of the support member.
A rod slide hole (7) is provided at one end part of a gas spring cylinder body (3), a gas operated chamber (5) that is filled with compressed gas by the cylinder body and a piston member (4) is formed, and a sleeve member (10) that is secured by at least a part thereof being fitted into one end part of the cylinder body, packing (15) that seals around the outer circumference of the piston member, and a guide ring (20) made of synthetic resin that guides the piston member are provided. Guide ring (20) is formed in an L-shaped cross section by a ring-shaped backup part (20a) of the same width as the radial thickness of the packing, which part contacts the opposite face on the side opposite the gas pressure working face and which backs up the packing, and a tubular guide part (20b) that extends in the opposite direction as the packing from the inside end of the backup part and that is fit on the outside of the piston member.
F16F 9/36 - Special sealings, including sealings or guides for piston-rods
F16F 9/00 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
F16F 9/32 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium Details
F16J 15/16 - Sealings between relatively-moving surfaces
A clamp device (C) is provided with a supporting mechanism (40) for supporting a grip member (20) when the grip member (20) is expanded in diameter, a clamping hydraulic cylinder (60) capable of axially advancing and retracting the grip member (20) and a clamp rod (30), and a body member (10) in which the grip member (20), the clamp rod (30), the supporting mechanism (40), and the clamping hydraulic cylinder (60) are mounted. The grip member (20), the clamp rod (30), and the supporting mechanism (40) are mounted near one end of the body member (10), and the axis (A) of the grip member (20) and the clamp rod (30) is offset from the axis (B) of the clamping hydraulic cylinder (60) in a direction perpendicular to the clamp rod (20).
A fluid path connection device (30) has a positioning mechanism (40) having a male coupler (81) attached to a stationary base member, having a female coupler (83) attached to a movable member (20), and positioning the movable member relative to the base member so that the male and female couplers (81, 82) become connectable. The fluid path connection device (30) also has a clamp mechanism (60) for clamping and fixing the movable member to the base member by elastic force of a spring (64) and releasing the clamping by hydraulic pressure of a hydraulic cylinder. The male coupler (81) has a connection sleeve (84) retracted by hydraulic pressure and advanced by spring. An oil path (90) interconnects a hydraulic operation chamber (89) of the connection sleeve (84) and an unclamping oil chamber (61a) of the hydraulic cylinder.
F16L 37/44 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of two pipe-end fittings with one lift valve being actuated to initiate the flow through the coupling after the two coupling parts are locked against withdrawal
F16L 37/23 - Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers, or helical springs under radial pressure between the parts by means of balls
F16L 37/56 - Couplings of the quick-acting type for double-walled or multi-channel pipes
A clamp device (C) has a grip member (2), a clamp rod (3), and a hydraulic cylinder (4). The grip member (2) can be inserted into a hole (H) in a workpiece (W) and grip the inner peripheral surface of the hole. The clamp device (C) has a body member (1), a seating surface (18) formed on the body member (1) and allowing the workpiece to be seated on the seating surface, a seating sensor including a pressurized air ejection hole open in the seating surface (18), and a workpiece mounting surface (22) which can, when the grip member (2) is at an advanced position (unclamped position), receive the workpiece (W) at a position nearer the advanced position than the seating surface (18) and which moves together with the grip member in clamping operation in which the grip member and the clamp rod retract.
A clamp device (C) has an annular grip member (2) capable of being inserted into a hole (H) in a workpiece (W) and gripping the inner peripheral surface of the hole, a clamp rod (3) having a tapered shaft section (31) fitted into and engaged with the grip member (2), a hydraulic cylinder (4) capable of axially advancing and retracting both the grip member (2) and the clamp rod (3), and a body member (1). The clamp device (C) further has a seating surface (18) formed on the body member (1) and allowing the workpiece (W) to be seated on the seating surface, and also has a clamp failure detection mechanism for detecting a clamp failure occurring when the grip member (2) is driven in the clamping direction by the hydraulic cylinder (4) via the clamp rod (3) to set the workpiece (W) to a state in which the workpiece (W) is seated on the seating surface (18).
A positioning and fixing device (2) positions via a ring member (4) a work pallet (1) in the vertical and horizontal directions relative to a base member (6) and restrains the rotation of the pallet on the vertical axis. The base member (6) has a Z-reference surface (10) capable of receiving a lower end reference surface (9) of the ring member (4) and positioning the pallet in the vertical direction, and the base member (6) also has a tapered engaging male section (11) formed, in a horizontal cross-section, in a regular polygon having outwardly protruding circular arc corners (11a) and sides (11b) and having an upwardly reduced diameter. The ring member (4) has a tapered engaging female section (13) capable of engaging with the tapered engaging male section (11) so that the lower end reference surface is in contact with the Z-reference surface. The positioning and fixing device (2) has a clamp mechanism (18) for fixing the ring member (4) to the base member (6). The sides of at least either the tapered engaging female section or the tapered engaging male section are adapted to elastically deform and engage in a close contact manner with the other.
A die carrying platform car (10) has a positioning pin mechanism (20a) having a positioning pin (22) capable of engaging and being disengaged from a positioning hole (8), a dropping prevention pin mechanism (40a) having a dropping prevention pin (42) capable of being switched between an engaged position and a not-engaged position, a first operation mechanism (30a) capable of moving the positioning pin (22) to the not-engaged position, a second operation mechanism (50a) capable of moving the dropping prevention pin (42) to the not-engaged position, an interlock mechanism (60) including first and second wire members (75a, 75b) for interconnecting the first and second operation mechanisms (30a, 50a), making the second operation mechanism (50a) inoperable when the positioning pin (22) has been switched to the not-engaged position by operation of the first operation mechanism (30a), and making the first operation mechanism (30a) inoperable when the dropping prevention pin (42) has been switched to the not-engaged position by operation of the second operation mechanism (50a).
A die-cast machine (1) comprises a fixed plate (3), a movable plate (4), and an extrusion mechanism (20) for ejecting a cast article from a movable M2. The extrusion mechanism (20) includes an extrusion cylinder (21), plural extrusion rods (22) driven by the extrusion cylinder (21), a rod-side extrusion plate (23) fixed to the ends of the extrusion rods (22), and an ejection member (24) having a pin-side extrusion plate (25) removably fixed to the rod-side extrusion plate (23) and plural ejection pins (26) attached to the pin-side extrusion plate (25). The rod-side extrusion plate (23) is provided with magnetic force generating mechanisms (35) for releasably fixing the pin-side extrusion plate (25) of the ejection member (24) by magnetic force.
A movable clamp device (10) has a clamp body (20), a motion drive unit (40), and a hose joint (61). The clamp body (20) has a T-shaped engaging section (21) engaging with a T-groove in a slide or a bolster of a press machine and also has a vertically positioned hydraulic cylinder (22), and can move along the T-groove. The motion drive unit (40) drives and moves the clamp body (20) forward and backward. The hose joint (61) is connected to the head end of a hydraulic hose (53) for supplying hydraulic pressure to the hydraulic cylinder (22). The hose joint (61) is connected to a hose joint connection section (62) of the clamp body (20) such that the axis of the hose joint (61) is inclined not less than 30 degrees relative to a horizontal plane.
The injection molding machine has a fixed platen and a movable platen for fixing a pair of molds; a pair of clamp plates mounted to the fixed platen and the movable platen, respectively, and having a fixation surface for mold fixation, respectively; and magnetic force generation mechanisms for generating a magnetic force for fixing the molds to the fixation surfaces. An air-gap formation mechanism is provided at least in one of the clamp plates for automatically forming air-gaps between the fixation surfaces and the molds in association with the movement start of the movable platen while the magnetic force generation mechanisms are inactivated for detaching the molds from the fixation surfaces.
A swing clamp apparatus is provided in which the clamp arm is positioned and attached to a clamp rod at a desired position in a simple and reliable manner and the clamp arm replacement workload is certainly reduced. The swing clamp apparatus comprises an attachment block fixed to the leading end of a clamp rod and to which a clamp arm is detachably attached and a pair of clamping force transmission pins inserted in the attachment block and clamp arm in the direction parallel to the orthogonal direction to the axis for coupling the positioned clamp arm to the attachment block in an integrated manner.
A clamp moving device (10) for advancing and retracting, by using a chain member, a mold fixing clamp device (70) in the horizontal direction along a T-groove (7) in the lower surface of a slide (2) of a press machine (1). The clamp moving device (10) has a block member (11), the chain member (40), and chain member drive means (20). The chain member (40) has idler wheels (46). At least that portion of the chain member (40) which is introduced into the T-groove (7) is constructed from a bidirectionally bendable chain (42) bendable in both directions, that is, in the direction to the idler wheels (46) and in the direction to the side opposite the idler wheels (46). The remaining portion of the chain member (40) is constructed from a single directionally bendable chain (41) bendable only to the idler wheel (46) side. When the clamp moving device clamps a mold, the idler wheels of the bidirectionally bendable chain (42) are set to a vertically zigzag pattern in the T-groove in the lower surface of the slide (2) to prevent the wheels from rattling relative to the slide (2).
A turning clamp apparatus (1) is provided with a housing (2); a clamp rod (3) movably mounted on the housing (2); a plurality of guide grooves (6) arranged at intervals in the circumferential direction on the outer circumferential surface on the other end side of the clamp rod (3); a plurality of fitting members (7) which fit in the guide grooves (6); a first sliding section (3a) which is arranged on one end side of the clamp rod (3) and slidably fits in the housing (2); a second sliding section (3b) which is arranged on the other end side of the clamp rod (3) and slidably fits in the housing (2); and a driving means (20) for driving the clamp rod (3). The outer circumferential surface of a guide groove forming section (3c) on the other end side of the clamp rod (3) is further separated from the housing (2) than the second sliding section (3b) over the entire circumference of the clamp rod (3).
Provided is an injection molding machine comprising a clamp plate having a fixing face for fixing a clamping object such as a mold and fixed on a platen, and a plurality of magnet units assembled in the clamp plate for fixing the clamping object magnetically on the fixing face. The injection molding machine further comprises a fluid passage formed in the clamp plate for passing hot oil to raise the temperature of the clamp plate, and an insulating plate made of a ceramic material between the clamp plate and the platen.
An air driven hydraulic pump having an excellent responsiveness at the time of quick opening of a pilot air supply valve. The air driven hydraulic pump comprises a plunger pump mechanism (10), an air cylinder (20) for driving the pump mechanism, and an air supply/exhaust switch-over mechanism (30) which automatically switches over between an air supply state of supplying pressurized air to an air-operated chamber (23) of the air cylinder and an air exhaust state of exhausting pressurized air out of the air-operated chamber (23). The air supply/exhaust switch-over mechanism includes a pilot air supply valve (41) and a pilot air release valve(42) for switching a movable valve body (35) between the air supplying position and the air releasing position. The pilot air supply valve consists of a guide shaft (38) which is an integral part of a plunger (15) of the pump mechanism, a cap member (39) slidably fitted on the guide shaft, and the movable valve body. When a piston comes close to the advance limit position, the cap member is relatively moved by a set distance (G) with respect to the guide shaft to quickly open the pilot air supply valve.
F04B 9/127 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting elastic-fluid motor, e.g. actuated in the other direction by gravity or a spring
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