A veneer sheet feed device for multistage veneer sheet dryer is provided between an auto feeder including a carry-in conveyor and a roll dryer (veneer sheet dryer). The veneer sheet feed device is provided with a guide member and a feed conveyor for feeding a veneer sheet carried in from the carry-in conveyor to each conveyance unit of the roll dryer in this order from a conveyance up stream side. The veneer sheet feed device further provided with a pivot mechanism that allows a starting end of the guide member belonging to the conveyance stage immediately above the conveyance stage in which the veneer sheet is carried this time from the carry-in conveyor to pivot to a portion above a horizontal position of a roller shaft located at a terminal end of this guide member.
This single board carry-in device 1 for a multistage veneer dryer is provided between an automatic feeder 4 including a carry-in conveyor 40 and a roll dryer (veneer dryer). The single board carry-in device 1 comprises, in the following order from a transport upstream side: guide members 20 for feeding, to each of transporting parts of the roll dryer, a single board carried in from the carry-in conveyor 40; and carry-in conveyors 10. The single board carry-in device 1 is further provided with a rotary mechanism 30 that rotates a start end section 22c of the guide member 20, which belongs to a transportation stage that is right above a transportation stage which is to receive a single board carried in by the carry-in conveyor 40 at its turn, to be higher than the horizontal position of a roller shaft 21a positioned at the final end section of the transportation stage. Thus, in the single board carry-in device for a multistage veneer dryer, a mechanism capable of stable delivery to the guide plates is provided.
B65H 29/60 - Article switches or diverters diverting the stream into alternative paths
B65G 47/52 - Devices for transferring articles or materials between conveyors, i.e. discharging or feeding devices
B65G 47/68 - Devices for transferring articles or materials between conveyors, i.e. discharging or feeding devices adapted to receive articles arriving in one layer from one conveyor and to transfer them in individual layers to more than one conveyor, or vice versa, e.g. combining the flows of articles conveyed by more than one conveyor
3.
Multistage drying apparatus and multistage drying method for sheet material to be treated
A horizontal multistage press apparatus 1 (multistage drying apparatus) includes conveyance paths R1 to R4 (first to fourth conveyance paths) in which the veneer sheet W1 (sheet material to be treated) is carried out in a standing state. The conveyance path R1 is positioned over between the loader device 10 and the hot press device 20, the conveyance path R2 is positioned over between the hot press device 20 and the open transpiration device 40, the conveyance path R3 is positioned over between the open transpiration device 40 and the temperature control press device 50, and the conveyance path R4 is positioned over between the temperature control press device 50 and the unloader device 60. The conveyance paths R1 to R4 are arranged in a straight line in plan view.
F26B 25/00 - Details of general application not covered by group or
B27D 3/02 - Veneer pressesPress platesPlywood presses with a plurality of press plates, i.e. multi-platen hot presses
F26B 3/20 - Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface
F26B 15/14 - Machines or apparatus for drying objects with progressive movementMachines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks
F26B 15/12 - Machines or apparatus for drying objects with progressive movementMachines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound the lines being all horizontal or slightly inclined
A parallel veneer standby step, a cross veneer moving step, a cross veneer positioning step, a cross veneer standby step, a parallel veneer returning step, a parallel veneer positioning step, a superimposing step, and a superimposed veneer gluing step are included. Accordingly, a superimposed veneer is obtained in which the parallel veneer and the cross veneer are bonded with a high degree of adhesion and corresponding edges of the parallel veneer and the cross veneer substantially align with each other.
B27D 1/04 - Joining wood veneer with any materialForming articles therebyPreparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefromPlywood sheets
B65H 5/06 - Feeding articles separated from pilesFeeding articles to machines by rollers
A horizontal type multi-stage press apparatus 1 (a multi-stage drying apparatus) is provided with conveyance routes R1 to R4 (first to fourth conveyance routes) on which a single plate W1 (a plate material to be treated) in a standing state is conveyed. The conveyance route R1 is disposed across a loader device 10 and a hot press device 20, the conveyance route R2 is disposed across the hot press device 20 and an open evaporation device 40, the conveyance route R3 is disposed across the open evaporation device 40 and a temperature adjusting press device 50, and the conveyance route R4 is disposed across the temperature adjusting press device 50 and an unloader device 60. The conveyance routes R1 to R4 are arranged in one straight line in a plan view. A plurality of the single plates W1 held by the open evaporation device 40 are set such that water vapor can be dissipated from both surfaces, in a standing state, of each of the single plates W1. The finishing temperature of each of the single plates W1 is maintained at a desired temperature by the temperature adjusting press device 50. Accordingly, a multi-stage drying apparatus and a multi-stage drying method for plate materials to be treated are provided in which a single plate having a certain quality can be produced while a space occupied by the entire apparatus is reduced.
F26B 15/12 - Machines or apparatus for drying objects with progressive movementMachines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound the lines being all horizontal or slightly inclined
B27D 3/02 - Veneer pressesPress platesPlywood presses with a plurality of press plates, i.e. multi-platen hot presses
B30B 7/02 - Presses characterised by a particular arrangement of the pressing members having several platens arranged one above the other
B30B 9/00 - Presses specially adapted for particular purposes
B30B 15/34 - Heating or cooling presses or parts thereof
F26B 3/20 - Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface
6.
MULTISTAGE CONVEYANCE METHOD, MULTISTAGE CONVEYANCE APPARATUS, AND MULTISTAGE PRESS APPARATUS FOR SHEET MATERIAL TO BE TREATED
Abstract A horizontal multistage press apparatus and method, the apparatus comprising a loader unit gripping body or an open transpiration unit gripping body (upstream side conveyance body) for carrying out a veneer sheet (sheet material to be treated) with the upper part of the veneer sheet gripped and suspended from the loader device or the open transpiration device (first treatment device), and a hot press unit gripping body or a temperature control press unit gripping body (downstream side conveyance body) for carrying the veneer sheet into the press position of the hot press device or the temperature control press device (second treatment device) with the gripping position of the veneer sheet shifted from the upper part to the lower part and supported. Date Recue/Date Received 2020-04-15
A horizontal type multi-stage press apparatus 1 (a multi-stage drying apparatus) is provided with conveyance routes R1 to R4 (first to fourth conveyance routes) on which a single plate W1 (a plate material to be treated) in a standing state is conveyed. The conveyance route R1 is disposed across a loader device 10 and a hot press device 20, the conveyance route R2 is disposed across the hot press device 20 and an open evaporation device 40, the conveyance route R3 is disposed across the open evaporation device 40 and a temperature adjusting press device 50, and the conveyance route R4 is disposed across the temperature adjusting press device 50 and an unloader device 60. The conveyance routes R1 to R4 are arranged in one straight line in a plan view. A plurality of the single plates W1 held by the open evaporation device 40 are set such that water vapor can be dissipated from both surfaces, in a standing state, of each of the single plates W1. The finishing temperature of each of the single plates W1 is maintained at a desired temperature by the temperature adjusting press device 50. Accordingly, a multi-stage drying apparatus and a multi-stage drying method for plate materials to be treated are provided in which a single plate having a certain quality can be produced while a space occupied by the entire apparatus is reduced.
B27D 3/02 - Veneer pressesPress platesPlywood presses with a plurality of press plates, i.e. multi-platen hot presses
F26B 3/20 - Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface
F26B 15/12 - Machines or apparatus for drying objects with progressive movementMachines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound the lines being all horizontal or slightly inclined
8.
MULTI-STAGE CONVEYANCE METHOD, MULTI-STAGE CONVEYANCE APPARATUS, AND MULTI-STAGE PRESS APPARATUS FOR PLATE MATERIALS TO BE TREATED
A horizontal type multi-stage press apparatus 1 (a multi-stage conveyance apparatus, a multi-stage press apparatus) is provided with: a loader unit gripper 70A or an open evaporation unit gripper 70C (an upstream side conveyor) that conveys a single plate W1 (a plate material to be treated) from a loader device 10 or an open evaporation device 40 (a first treating device) while suspending the single plate W1 therefrom by gripping the upper portion of the single plate W1; and a hot press unit gripper 70B or a temperature adjusting press unit gripper 70D (a downstream side conveyor) that conveys the single plate W1 to a press position of a hot press device 20 or a temperature adjusting press device 50 (a second treating device) while supporting the single plate W1 by changing the grip position of the single plate W1 from the upper portion to the lower portion. Accordingly, a multi-stage conveyance apparatus, a multi-stage press apparatus, and a multi-stage conveyance method for plate materials to be treated are provided in which a large space above a hot plate or a large lift-up mechanism is not required, and further, in which a driving force for conveying the plate materials to be treated can be made small.
B65G 21/14 - Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors movable, or having interchangeable or relatively- movable partsDevices for moving framework or parts thereof to allow adjustment of length or configuration of load-carrier or traction element
B27D 1/04 - Joining wood veneer with any materialForming articles therebyPreparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefromPlywood sheets
B65G 43/08 - Control devices operated by article or material being fed, conveyed, or discharged
A single plate overlapping method includes: a parallel single plate waiting step of causing a pasted parallel single plate 100 to wait on a post-pasting conveyor 33; a cross single plate moving step of separately moving a cross single plate 200 from a cross single plate supplying device 34 onto a pre-pasting conveyor 31; a cross single plate positioning step of positioning the cross single plate 200 at a reference position of the pre-pasting conveyor 31; a cross single plate waiting step of causing the positioned cross single plate 200 to wait in a position above the pre-pasting conveyor 31; a parallel single plate returning step of returning the parallel single plate 100 in the waiting state onto the pre-pasting conveyor 31; a parallel single plate positioning step of positioning the returned parallel single plate 100 at the reference position of the pre-pasting conveyor 31; an overlapping step of overlapping the cross single plate 200 in the waiting state on the positioned parallel single plate 100; and an overlapped single plate pasting step of pasting an upper surface of the cross single plate 200. Thus, an overlapped single plate is obtained in which a mutual adhesion degree is high and corresponding edges substantially align with each other.
B27D 1/04 - Joining wood veneer with any materialForming articles therebyPreparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefromPlywood sheets
11.
SINGLE PANEL ASSEMBLY APPARATUS AND SINGLE PANEL ASSEMBLY METHOD IN WHICH SAME IS USED
The front part of a movable conveyor 42 of a post-adhesive-application conveyor 33 (a sliding extendable conveyor) is provided with non-driven rollers 42d (guided rollers) arranged at an incline towards a reference plane (specification) 42e by a prescribed angle with respect to the width direction, such that the leading end of a single panel is guided towards the reference plane (specification) 42e (one side) of the movable conveyor 42. When a single panel is detected by a single-panel detection sensor 45 (single-panel detection means), a post-adhesive-application conveyor controller 47 (sliding movement control means) retracts the extended movable conveyor 42 in the contraction direction with drive rollers 42a of the movable conveyor 42 having been kept in forward-rotation drive. Thereby provided are: a single panel assembly apparatus of overall simple configuration that allows single panels to be automatically aligned and stacked at a prescribed location on a transport conveyor without requiring a large space; and a single panel assembly method in which the apparatus is employed.
B27D 1/04 - Joining wood veneer with any materialForming articles therebyPreparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefromPlywood sheets
B27D 1/00 - Joining wood veneer with any materialForming articles therebyPreparatory processing of surfaces to be joined, e.g. scoring
12.
Dewatering method for correcting water content of green veneer for plywood and apparatus for dewatering the green veneer
A large number of green veneers for plywood respectively having high water contents and formed in a rectangular shape are vertically laminated to obtain a veneer laminate having a quadrangular prismatic shape. The veneer laminate is located between upper and lower platen members so that two opposite side faces of the veneer laminate vertically form cut face gathering planes. The upper and lower platen members are moved toward each other to apply a pressing force to the veneer laminate. The pressing force applied to the veneer laminate is released or weakened while the water drawn through the cut face gathering planes by the pressing force is dripping downward along the cut face gathering planes of the veneer laminate vertically formed.
B30B 9/04 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
B30B 9/06 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers
B32B 38/00 - Ancillary operations in connection with laminating processes
B30B 9/10 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams without use of a casing
B30B 15/24 - Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam
A large number of green veneers for plywood respectively having high water contents and formed in a rectangular shape are vertically laminated to obtain a veneer laminate having a quadrangular prismatic shape. The veneer laminate is located between upper and lower platen members so that two opposite side faces of the veneer laminate vertically form cut face gathering planes. The upper and lower platen members are moved toward each other to apply a pressing force to the veneer laminate. The pressing force applied to the veneer laminate is released or weakened while the water drawn through the cut face gathering planes by the pressing force is dripping downward along the cut face gathering planes of the veneer laminate vertically formed.
B30B 9/04 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
B30B 9/06 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers
B30B 9/10 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams without use of a casing
B30B 15/24 - Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam
A large number of green veneers for plywood respectively having high water contents and formed in a rectangular shape are vertically laminated to obtain a veneer laminate having a quadrangular prismatic shape. The veneer laminate is located between upper and lower platen members so that two opposite side faces of the veneer laminate vertically form cut face gathering planes. The upper and lower platen members are moved toward each other to apply a pressing force to the veneer laminate. The pressing force applied to the veneer laminate is released or weakened while the water drawn through the cut face gathering planes by the pressing force is dripping downward along the cut face gathering planes of the veneer laminate vertically formed.
F26B 5/14 - Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringingDrying solid materials or objects by processes not involving the application of heat by brushingDrying solid materials or objects by processes not involving the application of heat by wiping
15.
APPARATUS FOR DEWATERING GREEN VENEERS FOR PLYWOOD
A large number of green veneers for plywood respectively having high water contents and formed in a rectangular shape are vertically laminated to obtain a veneer laminate having a quadrangular prismatic shape. The veneer laminate is located between upper and lower platen members so that two opposite side faces of the veneer laminate vertically form cut face gathering planes. The upper and lower platen members are moved toward each other to apply a pressing force to the veneer laminate. The pressing force applied to the veneer laminate is released or weakened while the water drawn through the cut face gathering planes by the pressing force is dripping downward along the cut face gathering planes of the veneer laminate vertically formed.
A vertical cold-press device (1) which is a vertical plate press device is provided with: a pressing plate (13) which is disposed on the upper side and/or the lower side of an item to be processed (W1), and which can move in the vertical direction; pressing cylinders (16L, 16R) which are disposed in a plurality of different positions relative to a pressing surface (13a) of the pressing plate (13), and which press the item to be processed (W1) in the vertical direction via the pressing plate (13); pressing cylinder linear encoders (41L, 41R) (position offset amount detection means) which detect the offset amount of the pressing plate (13) in the vertical direction relative to a reference position, under the pressing force of the pressing cylinders (16L, 16R); and electromagnetic switching valves (53L, 53R) (cylinder control means) and a control substrate (60) which individually drive control the pressing cylinders (16L, 16R) so that the detected offset amount of the pressing plate (13) is confined within a set range. Thus, the finished product laminated plywood can be formed to be a uniform thickness.
Two press cylinders are disposed at an equal interval at left and right having the opening-closing cylinder therebetween, so as to have the approximately same distance from the conveying reference plane as the opening-closing cylinder. The opening-closing cylinder comprises an opening-closing linear encoder, which detects a decreased amount of the entire thickness of the object-to-be-processed as a displacement of the ram, when the object-to-be-processed is hot-pressed. The respective press cylinders comprise pressure sensors for press cylinders detecting pressing pressures of the pressing plates as cylinder inner pressures. A horizontal hotpress system is provided, which can easily improve yield ratio of the boards after hot-pressing by measuring thickness size of the object-to-be-processed while hot-pressed, according to an operation distance of the opening-closing cylinder, comprising an opening-closing cylinder for opening and closing the press plates, other than a plurality of the press cylinders for pressing the press plates.
A horizontal hotpress system is provided, which can maintain the thickness of the boards (laminated boards) after hot-pressing within the allowable range, by driving and controlling the press cylinders individually, even when, for example, the size or material of the boards changes. Also, A horizontal hotpress system is provided, which can maintain the thickness of the boards (laminated boards) after hot-pressing within the allowable range, by driving and controlling the press cylinders individually or jointly without adjusting the pressing positions of the press cylinders, even when, for example, the size or material of the boards changes, and further, being able to adapt to change of the material of the boards or the like.
A horizontal multistage press device is configured in such a manner that two pressing cylinders (150L, 150R) are arranged on the left and right of an opening and closing cylinder (180) (center (O) of pressing) such that the pressing cylinders (150L, 150R) are at equal distances (L) from the opening and closing cylinder (180) and that the pressing cylinders (150L, 150R) are separated from a conveyance reference surface (B) by a distance substantially the same as the distance from the conveyance reference surface (B) to the opening and closing cylinder (180). The opening and closing cylinder (180) is equipped with a linear encoder (181) adapted for detecting, as the amount of movement of a ram (183), the amount of a reduction in the overall thickness of an article (W) to be processed. Such detection is performed when the article (W) is processed from a state in which pressing plates (140F, 140B) are being closed to a state in which the article (W) has been heated and pressed by the pressing cylinders (150L, 150R). The pressing cylinders (150L, 150R) are equipped with pressure sensors (151L, 151R) for detecting, as the inner pressure of the pressing cylinders, pressing force of the pressing plates (140F, 140B). Thus, the horizontal multistage press device is equipped, separately from the pressing cylinders for pressing the pressing plates, with the opening and closing cylinder for opening and closing the pressing plates and measures the overall thickness of the article to be processed during heating and pressing based on the operation distance of the opening and closing cylinder, and by this, the yield of a plate material (laminated plywood) after being heated and pressure bonded is easily improved.
Hot-pressing is performed by driving and controlling pressing cylinders (150LH, 150RH, 150LL, 150RL) separately so that even if, for example, the size or the material of the board to be processed (W1) changes, the overall thickness of the processed body (W) after hot-pressing is within a prescribed range of permissible dimensions over the entire pressed surface (141). Each pressing cylinder (150LH, 150RH, 150LL, 150RL) is provided with a pressing cylinder linear encoder (151LH, 151RH, 151LL, 151RL) that detects the amount of decrease in overall thickness of the processed body (W) as the amount of ram movement and with a pressing cylinder pressure sensor (152LH, 152RH, 152LL, 152RL) that detects the pressing force of press plates (140F, 140B) as internal cylinder pressure in the pressing cylinders (150LH, 150RH, 150LL, 150RL). The rams (153LH, 153RH, 153LL, 153RL) of the respective pressing cylinders (150LH, 150RH, 150LL, 150RL) are each affixed to the press plates (140F, 140B) so that the pressing position of the press plates (140F, 140B) with respect to the pressed surface (141) does not vary. The pressing cylinders (150LH, 150RH, 150LL, 150RL) are driven and controlled separately to perform hot-pressing, so that even if, for example, the size or the material of the board to be processed (W1) changes, the overall thickness of the processed body (W) after hot-pressing is within a prescribed range of permissible dimensions over the entire pressed surface (141). A horizontal multistage press is thereby provided that, by controlling the operation of multiple pressing cylinders separately, can keep the thickness of a board (laminate board) after hot-pressing within a range of permissible dimensions even if, for example, the size or material of the conveyed board changes. A horizontal multi-stage press is also provided, which, by controlling the operation of multiple pressing cylinders separately or jointly, can keep the thickness of a board (laminate board) after hot-pressing within a range of permissible dimensions without moving or adjusting the pressing cylinder pressing positions, when, for example, the size of the conveyed board changes, and can also adapt to changes in board material.
patents
