Abstract

A thread trimming mechanism of a sewing machine for the production of protective clothing, comprising an upper mounting plate (26) and a lower mounting plate (14); the upper mounting plate (26) and the lower mounting plate (14) are arranged above a bottom plate base (7) by means of a supporting and lifting/lowering mechanism, the upper mounting plate (26) and the lower mounting plate (14) are respectively provided with an upper thread trimming rod (25) and a lower thread trimming rod (15), the end of the upper thread trimming rod (25) and the end of the lower thread trimming rod (15) close to each other are respectively provided with an upper thread trimming cutter (17) and a lower thread trimming cutter (16), and the end of the upper thread trimming rod (25) and the end of the lower thread trimming rod (15) away from each other are respectively provided with an upper supporting wheel (24) and a lower supporting wheel (11); and the upper mounting plate (26) is further provided with a driving mechanism for driving the upper supporting wheel (24) to descend intermittently, the lower mounting plate (14) is further provided with a transmission mechanism for controlling the lower supporting wheel (11) to ascend intermittently, and the driving mechanism is connected to the transmission mechanism by means of a transmission belt (18). The thread trimming mechanism of a sewing machine for the production of protective clothing is convenient to use and control, can reliably perform continuous thread trimming operations, and increases the efficiency of thread trimming processing.

IPC Classes  ?

• D05B 65/00 - Devices for severing the needle or lower thread in sewing machines

Abstract

A sewing machine for garment production and processing, comprising a treadle-type sewing machine driving mechanism (2), supporting legs (4), a processing platform (6), and a sewing machine body (8). A driving motor (1) is mounted on the supporting legs (4), and a driving pulley (21) is mounted on an output shaft of the driving motor (1); the driving pulley (21) is connected to a driven pulley (11) mounted on a driving shaft of the sewing machine by means of a transmission belt (13); a connector (20) is further mounted at the end portion of the output shaft of the driving motor (1); a first U-shaped frame (15) is mounted on the lower side of the processing platform (6); a first sliding sleeve (16) is provided on the first U-shaped frame (15) in a matched and sliding mode; a generator (17) is mounted on the lower side of the first sliding sleeve (16), and a connecting base (19) is mounted on an output shaft of the generator (17); and manual telescopic cylinders (22) are further fixed to the supporting legs (4) and connected to the generator (17), and an illuminating lamp (7) electrically connected to the generator (17) is further mounted on the lower side of the processing end of the sewing machine body (8). According to the sewing machine, random switching between electric driving and treadle driving can be carried out, and the illuminating requirements of a working area can be ensured in a situation without electricity, such that the working progress is not influenced.

IPC Classes  ?

• D05B 69/10 - Electrical or electromagnetic drives
• D05B 69/06 - Pedal drives
• D05B 79/00 - Incorporations or adaptations of lighting equipment for sewing machines

Abstract

A paint spraying device for the housing of a sewing machine. The device belongs to the technical field of sewing machines, and solves the problems of it not being possible for an existing device to clamp a housing and the spraying difficulty being increased. The device comprises a protective cover (1), wherein a paint spraying cavity (2) is configured in the protective cover (1); a support (3) is arranged in the middle of the paint spraying cavity (2); a paint spraying assembly is arranged on the support (3); the paint spraying assembly is connected to a displacement assembly; the displacement assembly is mounted on the support (3); two vertical sliding rails (10) are symmetrically arranged in the protective cover (1); regulating assemblies are mounted on the vertical sliding rails (10); the regulating assemblies are connected to clamping assemblies (13); and the paint spraying assembly comprises a spray gun fixing base (5) and a spray gun, and the spray gun is mounted on the spray gun fixing base (5). The displacement assembly is provided such that flexible movement of the position of the spray gun is realized and the smooth operation of paint spraying is facilitated. In addition, the clamping assemblies (13) are arranged so as to clamp housings of different shapes, such that a housing is prevented from falling off, and the difficulty of paint spraying is reduced.

IPC Classes  ?

• B05B 13/02 - Means for supporting workArrangement or mounting of spray headsAdaptation or arrangement of means for feeding work
• B05B 13/04 - Means for supporting workArrangement or mounting of spray headsAdaptation or arrangement of means for feeding work the spray heads being moved during operation

Abstract

A novel sewing machine housing grinding apparatus, comprising a base (1). A machining table (2) is provided at the center above the base (1); support columns (3) are provided on the two sides above the base (1); fixed bases (4) are symmetrically arranged on left and right sides of the surface of the machining table (2); a driving cavity is provided inside the machining table (2); an adjustment apparatus (5) is provided in the driving cavity; a height-adjustable plate (6) is connected to the middle of the upper portions of the support columns (3); an electric sliding seat (7) is slidably connected to the outside of the height-adjustable plate (6); a mounting box (8) is fixedly connected below the electric sliding seat (7) by means of a fixing rod; a driving apparatus (9) is provided inside the mounting box (8). In the present apparatus, overall grinding of the sewing machine housing is performed by means of a square grinding plate, and a circular grinding plate is driven by a rotating motor to perform secondary grinding on a recess, thereby improving the grinding effect of the sewing machine housing and speeding up the machining efficiency of a product.

IPC Classes  ?

• B24B 19/00 - Single purpose machines or devices for particular grinding operations not covered by any other main group
• B24B 41/04 - HeadstocksWorking-spindlesFeatures relating thereto
• B24B 41/06 - Work supports, e.g. adjustable steadies
• B24B 47/20 - Drives or gearings for grinding machines or devicesEquipment therefor relating to feed movement
• B24B 47/22 - Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation

Abstract

A positioning fixture for machining of a housing of a sewing machine head, comprising a base (1) and an upright column (11); the upright column (11) is arranged above the base (1), a mounting base (13) is fixedly mounted in the middle of the upright column (11), clamping assemblies (14) for clamping a housing are symmetrically arranged on two sides of the mounting base (13), the mounting base (13) is fixedly connected to the clamping assemblies (14), and a position adjustment assembly for adjusting the height of the upright column (11) is arranged between the upright column (11) and the base (1). The positioning fixture achieves the adjustment of the height of the clamping assemblies by means of the provision of the position adjustment assembly, facilitating clamping of housings in different environments, increasing the machining efficiency of housings, and achieving the clamping and limiting of housings of different shapes by means of the provision of a swing assembly.

IPC Classes  ?

• B23Q 3/08 - Work-clamping means other than mechanically-actuated
• B23Q 1/25 - Movable or adjustable work or tool supports

Abstract

An energy-saving electric sewing machine, comprising a working table (2), a sewing machine body (4), a support plate (14) and a connecting rod (16); two support frames (1) are symmetrically welded at two sides of a lower surface of the working table (2), two ends of the support plate (14) are respectively welded to opposite sides of the two support frames (1), an electric motor (11) is fixed on an upper surface of the support plate (14), a transmission shaft (10) is mounted at one end of the electric motor (11), and a driving wheel (9) is fixed at one end of the transmission shaft (10), a button (3) is fixed at one side of the upper surface of the working table (2), the sewing machine body (4) is fixed on the upper surface of the working table (2), a cylinder (5) is mounted at one side of the sewing machine body (4), and one end of the cylinder (5) is in the sewing machine body (4), a driven wheel (6) is fixed at the other end of the cylinder (5), a circular block (18) is fixed at one side of the driven wheel (6), the circular block (18) is welded to one end of the connecting rod (16), and fan blades (7) are fixed on the surface of the connecting rod (16). The electric motor (11) synchronously drives the fan blades (7) to rotate while driving the sewing machine body (4) to operate, thereby avoiding increasing power consumption due to separately equipped fans.

IPC Classes  ?

• D05B 81/00 - Sewing machines incorporating devices serving purposes other than sewing, e.g. for blowing air, for grinding
• D05B 69/12 - Electrical or electromagnetic drives using rotary electric motors

Abstract

A sewing machine presser foot provided with a thread cutter comprises a mounting block (1), a rotating block (3), a protective sleeve (5), a rotation slot (31), and a second rotating shaft (52). A first rotating shaft (11) is inserted into a lower end of the mounting block (1), and the two ends of the first rotating shaft (11) are inserted at the inner sides of the rotating block (3). The rotation slot (31) is provided at an inner portion of one end of the rotating block (3) away from the first rotating shaft (11). The second rotating shaft (52) is rotatably mounted inside the rotation slot (31). Position-limiting rings (32) are embedded at an inner wall of an upper end and an inner wall of a lower end of the rotation slot (31). Two ends of the second rotating shaft (52) are inserted into the position-limiting rings (32). Symmetrically distributed springs (6) are sleeved on the surface of the second rotating shaft (52). A connecting rod (51) passing through the rotation slot (31) is provided at one end of the second rotating shaft (52). The protective sleeve (5) is provided at one end of the connecting rod (51) away from the second rotating shaft (52). A blade (4) is embedded at a side surface of the protective sleeve (5). The blade (4) can controlled by the springs (6) such that a worker can quickly cut a sewing thread, thereby simplifying operations and improving productivity.

IPC Classes  ?

• D05B 29/06 - Presser feet
• D05B 29/12 - Presser-foot attachment
• D05B 65/00 - Devices for severing the needle or lower thread in sewing machines

Abstract

Disclosed is a thread cutting mechanism for a sewing machine, the mechanism comprising a mounting block (1), a placing block (3), a rotating block (6) and a thread-scissor body (10), wherein the bottom end of the mounting block (1) is provided with an embedding groove (12); an embedded block (13) is embedded in the interior of the embedding groove (12); the interior of the mounting block (1) is provided with a sliding groove (2); a pulley (7) slides in the interior of the sliding groove (2) ; a second rotating shaft (11) is arranged in the middle of the pulley (7); the rotating block (6) is mounted on the top end of the second rotating shaft (11); the placing block (3) is mounted on one side of the rotating block (6); the interior of the placing block (3) is provided with a placing groove (8); two sides of the placing groove (8) are provided with insertion blocks (4); the top end of each insertion block (4) is installed with a shifting bar (9) and each insertion block (4) is mounted in the interior of the placing groove (8) in a rotating manner by means of a first rotating shaft (5); and the thread-scissor body (10) is inserted into the interior of the insertion blocks (4). In the thread cutting mechanism, by means of being placed in a rotatable receiving groove, traditional thread scissors cannot be lost even when not in use; when in use, the thread cutting mechanism is fixedly mounted at one side of a sewing needle, and by means of turning and sliding, a sewing thread is cut off by the thread scissors, therefore the operation is fast in speed and has a high efficiency.

IPC Classes  ?

• D05B 65/00 - Devices for severing the needle or lower thread in sewing machines
• B26B 13/00 - Hand shearsScissors