A zipper double folding three-in-one sewing machine

Abstract

The present invention relates to the technical field of zipper double-folded edge sewing, and specifically to a zipper double-folded edge three-in-one sewing machine, comprising a frame, a small piece feeding workbench, a small piece edge alignment device and a zipper correction device, wherein the top of the frame and the zipper correction device are fixed to each other, a sewing pre-pressing device is arranged on the top of the frame above the zipper correction device, two groups of zipper positioning devices for fixing the zipper are arranged on the top of the frame below the zipper correction device, a zipper transfer device is arranged on the top of the frame near the top of the zipper positioning device, and a zipper cutting device is arranged on one side of the zipper transfer device. The present invention presses one end of the zipper through one of the zipper positioning devices, and then moves the zipper correction slider through the zipper correction cylinder, and the zipper correction slider moves the zipper correction strip, so that the opening groove in the zipper correction strip cooperates with the zipper, thereby realizing the correction of the zipper.

Description

Technical Field

[0001] The invention relates to the technical field of zipper double-folding edge sewing, in particular to a zipper double-folding edge three-in-one sewing machine. Background Art

[0002] Sewing machines, also known as sewing machines, are special sewing machines used for the production of clothing, shoes, hats, bags, etc., as well as the production and processing of various fabric clothing, shoes, hats, including cloth laying, cutting, ironing, conveying management and other machinery and down processing equipment. It is of considerable importance and irreplaceable in the national economy. Sewing machines can sew cotton, linen, silk, wool, artificial fiber and other fabrics and leather, plastic, paper and other products. The stitches are neat, beautiful, flat and firm, with fast sewing speed and easy use.

[0003] When the zipper is sewn on two pieces of fabric, the zipper and the two pieces of fabric are placed crookedly, resulting in inaccurate docking and uneven stitches when the zipper and fabric are sewn. Relying on manual alignment leads to unstable product quality, increased production costs and waste of resources. Summary of the invention

[0004] Technical issues to be solved

[0005] The present invention is aimed at the above-mentioned defects existing in the prior art, and specifically proposes a zipper double-fold three-in-one sewing machine, in which one of the zipper positioning devices is pressed onto one end of the zipper, the zipper correction cylinder moves the zipper correction slider, the zipper correction slider moves the zipper correction strip, and the open groove in the zipper correction strip cooperates with the zipper, thereby correcting the zipper.

[0006] Technical Solution

[0007] In order to solve the above technical problems, the present invention provides a zipper double-folding three-in-one sewing machine, comprising a frame, a zipper transfer device arranged on the upper part of the frame, a zipper displacement device, a zipper cutting device, a zipper deviation correcting device, and a zipper positioning device.

[0008] A small piece loading workbench, a small piece loading conveying device and a small piece edge alignment device are arranged on one side of the frame;

[0009] A large-sheet loading workbench, a large-sheet loading conveying device and a large-sheet edge alignment device are arranged on the other side of the frame;

[0010] The zipper displacement device is used to pull a zipper of a predetermined length to the zipper cutting device and cut it. The zipper transfer device is used to transfer the cut zipper to the zipper positioning device. The two sets of zipper positioning devices located below the zipper deviation correcting device are used to fix the two ends of the zipper respectively.

[0011] The zipper deviation correction device comprises a zipper correction fixing seat, a zipper correction guide rail and a zipper correction slider, the zipper correction guide rail is arranged on the zipper correction fixing seat, and the zipper correction fixing seat is arranged on the frame;

[0012] The zipper correction slider can be driven by a cylinder and reciprocate on the zipper correction guide rail. One end of the zipper correction slider is provided with a protruding zipper correction strip, and the bottom of the zipper correction strip is provided with an open groove that can cooperate with the zipper protrusion.

[0013] Among them, the small piece loading workbench is used to store small pieces and drive the small pieces to move along the Z-axis direction, the small piece loading conveyor device is used to pick up the small pieces and transfer the small pieces to the small piece edge alignment device, and the small piece edge alignment device is used to perform edge alignment operations on the large pieces before bending;

[0014] The large-sheet loading workbench is used to store large sheets and drive the large sheets to move along the Z-axis direction. The large-sheet loading conveying device is used to pick up the large sheets and transfer them to the large-sheet edge alignment device. The large-sheet edge alignment device is used to perform edge alignment operations on the large sheets before bending.

[0015] Among them, there are at least one group of small piece edge alignment devices and large piece edge alignment devices respectively, and each group of small piece edge alignment devices and large piece edge alignment devices includes an edge alignment baffle and a corresponding edge alignment cylinder. The reciprocating motion of the edge alignment baffle is used to perform edge alignment operations on the small piece or large piece before bending.

[0016] Among them, a small piece bending device and a small piece pressing device are arranged on the frame near the small piece opposite edge device, and the small piece pressing device is arranged above the small piece bending device, and the small piece pressing device is used to press and fix the small piece to be bent;

[0017] A large sheet bending device and a large sheet pressing device are arranged on the frame near the large sheet edge device. The large sheet pressing device is arranged above the large sheet bending device. The large sheet pressing device is used to press and fix the large sheet to be bent.

[0018] Both the small-piece bending device and the large-piece bending device include a bending plate and a bending cylinder. The bending cylinder is used to drive the bending plate to move up and down. When the bending plate moves downward, it can be used to bend large or small pieces.

[0019] Among them, a bending displacement device is arranged between the small-piece pressing device and the large-piece pressing device, a small-piece hand-changing device is arranged on the same side of the small-piece pressing device, and a large-piece hand-changing device is arranged on the same side of the large-piece pressing device;

[0020] The bending displacement device has two sets of clamping parts for clamping the bent large and small pieces respectively. The bending displacement device moves the small piece to the position of the small piece hand-changing device and the large piece to the position of the large piece hand-changing device.

[0021] The small piece changing device clamps the small piece and transfers it to the upper side of the zipper to wait for assembly.

[0022] The large piece changing device clamps the large piece and transfers it to the other side above the zipper to wait for assembly.

[0023] Among them, a sewing pre-pressing device is also arranged above the zipper correction device, and the sewing pre-pressing device includes a compression strip, and the compression strip includes two compression plates arranged opposite to each other, and the compression plates can be used to compress the two sides of the zipper.

[0024] The frame is also equipped with a sewing device, a discharging device, a sewing displacement device and a discharging table.

[0025] The sewing displacement device is used to clamp the assembled small pieces, large pieces and zippers and transfer the three to the sewing device position for sewing.

[0026] The discharging device is used to pick up the sewn small pieces, large pieces and zippers and put the zippers on the discharging table.

[0027] Among them, the sewing displacement device includes an upper sewing clamp and a lower sewing clamp. The upper sewing clamp and the lower sewing clamp can move under the corresponding driving device respectively, and the movement of the lower sewing clamp will synchronously drive the movement of the upper sewing clamp.

[0028] The assembled large piece, small piece and zipper are surrounded, pressed and fixed on the sewing lower clamping plate through the sewing upper clamping plate, and corresponding sewing holes are also arranged on the sewing upper clamping plate and the sewing lower clamping plate. The assembled large piece, small piece and zipper are transferred to the sewing device position for sewing through the movement of the sewing lower clamping plate;

[0029] The sewing device adopts a double-needle flat-lock sewing machine.

[0030] Among them, the zipper transfer device, the zipper displacement device, the zipper correction device, and the zipper positioning device are driven by cylinders or motors, and through corresponding guide rails and slider structures, they can achieve movement in at least one of the three directions of the XYZ axes.

[0031] The zipper cutting device adopts pneumatic scissors; the zipper transfer device includes at least two pneumatic suction cups.

[0032] Beneficial Effects

[0033] Compared with the prior art, the present invention places the zipper on the zipper positioning device, presses one end of the zipper through one of the zipper positioning devices, and starts the zipper correction cylinder, which moves the zipper correction slider, and the zipper correction slider moves the zipper correction strip. Since the zipper correction strip is provided with an open groove that cooperates with the raised part of the zipper, when the zipper correction strip moves, the zipper is straightened. After the other zipper positioning device is pressed onto the other end of the zipper, one end of the zipper is released, and when the zipper correction strip returns to its position, the zipper will be straightened again, thereby achieving the zipper correction function. The present invention has a simple structure and a good correction effect. The device uses a double-needle flat-bed sewing machine to sew two seams at the same time, which can improve sewing efficiency and reduce production costs, thereby achieving the automation of zipper pulling, cutting, positioning and correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The three-dimensional structure of the present invention Figure 1 .

[0035] Figure 2 The three-dimensional structure of the present invention Figure 2 .

[0036] Figure 3 The three-dimensional structure of the present invention Figure 3 .

[0037] Figure 4 The three-dimensional structure of the present invention Figure 4 .

[0038] Figure 5 It is a structural schematic diagram of the zipper deviation-correcting device of the present invention.

[0039] Figure 6 The present invention is a schematic structural diagram of a zipper small piece feeding workbench, a small piece feeding conveying device, a large piece feeding workbench and a large piece feeding conveying device.

[0040] Figure 7 It is a schematic structural diagram of a zipper sewing device of the present invention.

[0041] Figure 8 It is a front view structural schematic diagram of a small piece bending device, a large piece bending device, a small piece pressing device and a large piece pressing device of the present invention.

[0042] Fig. 9 The three-dimensional structure diagram of the small piece bending device, large piece bending device, small piece pressing device and large piece pressing device of the present invention is shown in FIG. Figure 1 .

[0043] Fig.10 The three-dimensional structure diagram of the small piece bending device, large piece bending device, small piece pressing device and large piece pressing device of the present invention is shown in FIG. Figure 2 .

[0044] Fig.11 It is a schematic structural diagram of the bending displacement device of the present invention.

[0045] Fig.12 The zipper transfer device, zipper displacement device and zipper cutting device of the present invention are schematic diagrams of the structures Figure 1 .

[0046] Fig.13 The zipper transfer device, zipper displacement device and zipper cutting device of the present invention are schematic diagrams of the structures Figure 2 .

[0047] Fig.14 The structure diagram of the small piece hand-changing device and the large piece hand-changing device of the present invention is shown in FIG. Figure 1 .

[0048] Fig.15 The structure diagram of the small piece hand-changing device and the large piece hand-changing device of the present invention is shown in FIG. Figure 2 .

[0049] Fig.16 It is a schematic diagram of the structure of the discharging device and the sewing displacement device of the present invention.

[0050] Fig.17 It is a partial structural schematic diagram of the zipper transfer device, the zipper displacement device, and the zipper cutting device of the present invention.

[0051] Fig.18 The partial structure diagram of the zipper deviation correction device of the present invention is shown in FIG. Figure 1 .

[0052] Fig.19 The partial structure diagram of the zipper deviation correction device of the present invention is shown in FIG. Figure 2 .

[0053] Fig. 20 The partial structure diagram of the zipper deviation correction device of the present invention is shown in FIG. Figure 3 .

[0054] Fig.21 The partial structure diagram of the zipper deviation correction device of the present invention is shown in FIG. Figure 4 .

[0055] Fig. 22 It is a partial structural schematic diagram of the zipper positioning device of the present invention.

[0056] Fig.23 This is a schematic diagram of the partial structure of the large-scale loading workbench of the present invention. Figure 1 .

[0057] Fig.24 This is a schematic diagram of the partial structure of the large-scale loading workbench of the present invention. Figure 2 .

[0058] Fig.25 It is a partial structural schematic diagram of the discharging device of the present invention.

[0059] Fig.26 It is a schematic diagram of the local structure of the combination of the small piece, the large piece and the zipper of the present invention.

[0060] In the figure:

[0061] 1 is a frame; 2 is a small piece feeding workbench; 3 is a small piece feeding conveying device; 4 is a large piece feeding workbench; 5 is a large piece feeding conveying device; 6 is a large piece edge alignment device; 7 is a sewing device; 8 is a small piece edge alignment device; 9 is a small piece bending device; 10 is a large piece bending device; 11 is a bending displacement device; 12 is a discharging device; 13 is a sewing displacement device; 13a is a sewing upper clamping plate; 13b is a sewing lower clamping plate; 13c is a suture hole;

[0062] 14 is a small piece hand-changing device; 15 is a large piece hand-changing device; 16 is a discharging platform; 17 is a zipper transfer device; 18 is a zipper displacement device; 19 is a zipper cutting device;

[0063] 20 is a zipper correction device; 2001 is a zipper correction fixing seat; 2002 is a zipper correction cylinder; 2003 is a zipper correction slider; 2004 is a zipper correction guide; 2005 is a zipper correction strip; 2006 is an opening slot; 21 is a sewing pre-pressing device; 2101 is a pressing strip; 2102 is a pressing sheet;

[0064] 22 is a zipper positioning device; 22a is a pressing extension end; 23 is a small piece pressing device; 24 is a large piece pressing device;

[0065] 41 is a limit baffle; 42 is a limit switch; 43 is a loading truss; 44 is an opposite side baffle; 44a is an opposite side cylinder; 45 is a bending plate; 45a is a bending cylinder; 45b is a clamping part X-direction drive cylinder; 45c is a bending upper clamping plate; 45d is a bending lower clamping plate; 45e is a clamping part Z-direction drive cylinder

[0066] 100 is a small piece; 200 is a large piece; 300 is a zipper. DETAILED DESCRIPTION

[0067] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0068] In this embodiment, the directions indicated by the XYZ axes are as follows: Figures 1 to 26As shown, the zipper double-folded three-in-one sewing machine includes a frame 1, a small piece feeding workbench 2, a small piece edge alignment device 8 and a zipper correcting device 20. The top of the frame 1 is fixed to the zipper correcting device 20. A sewing pre-pressing device 21 is arranged above the zipper correcting device 20 at the top of the frame 1. Two groups of zipper positioning devices 22 for fixing the zipper are arranged below the zipper correcting device 20 at the top of the frame 1. A zipper transfer device 17 is also arranged at the top of the frame 1 near the zipper positioning device 22. A zipper cutting device 19 is arranged on one side of the zipper transfer device 17, and a zipper displacement device 18 is arranged on the other side of the zipper transfer device 17.

[0069] The zipper correction device 20 includes a zipper correction fixing seat 2001 and a zipper correction guide rail 2004, the zipper correction guide rail 2004 is fixed to the upper surface of the zipper correction fixing seat 2001, and the bottom of the zipper correction fixing seat 2001 is fixed on the frame 1. The zipper correction device 20 also includes a zipper correction cylinder 2002 and a zipper correction slider 2003. The zipper correction cylinder 2002 is fixed to the zipper correction fixing seat 2001, and the output end of the zipper correction cylinder 2002 is fixed to the bottom of the zipper correction slider 2003. An extended zipper correction strip 2005 is provided at one end of the zipper correction slider 2003, and an open groove 2006 that cooperates with the raised part of the zipper is provided at the bottom of the zipper correction strip 2005.

[0070] There are two zipper positioning devices 22, and the zipper positioning devices 22 include a pressing protruding end 22a with a top bend. The two pressing protruding ends 22a are respectively used to press the two ends of the zipper. The zipper positioning devices 22 move under the drive of the cylinder, thereby driving the movement of the pressing protruding ends 22a. One of the zipper positioning devices 22 presses one end of the zipper, and the zipper correction cylinder 2002 is started. The zipper correction cylinder 2002 moves the zipper correction slider 2003, and the zipper correction slider 2003 moves the zipper correction strip 2005. Since the zipper correction strip 2005 is provided with an open groove that cooperates with the raised part of the zipper, when the zipper correction strip 2005 moves, the zipper is straightened. After the other zipper positioning device 22 presses the other end of the zipper, one end of the zipper is released. When the zipper correction strip 2005 returns to its position, the zipper will be straightened again, thereby achieving the effect of zipper correction.

[0071] The outside of the zipper cutting device 19 is also provided with a zipper guiding device for guiding the movement of the zipper. The zipper cutting device 19 is used to cut the zipper. The zipper cutting device 19 uses pneumatic scissors to cut or uses a vertically moving cutter to cut the zipper. In this embodiment, the end of the zipper displacement device 18 adopts a clamping claw structure to facilitate clamping the zipper. The zipper displacement device 18 is used to clamp one end of the zipper and drive the zipper to move to the position of the zipper transfer device 17. The zipper transfer device 17 is used to pick up the zipper and drive the zipper to move along the XZ axis and move the zipper to the zipper positioning device 22. The zipper transfer device 17 is composed of a cylinder moving along the Z axis and a cylinder moving along the X axis. The output end of the cylinder moving along the X axis is connected to a suction cup for picking up the zipper, and the zipper positioning device 22 has the function of moving along the Z axis and the Y axis. The zipper displacement device 18 adopts a servo motor, a pulley and a belt transmission method. The zipper is clamped by the clamping claws on the belt, so that the zipper is accurately pulled to a certain distance.

[0072] The zipper positioning device 22 fixes the zipper, the sewing pre-pressing device 21 includes a clamping strip 2101, and the clamping strip 2101 includes two clamping plates 2102 arranged opposite to each other. The driving part of the sewing pre-pressing device 21 is driven by a cylinder, so that the sewing pre-pressing device 21 can move in multiple directions.

[0073] The pressing strip 2101 is used to press down the large and small pieces after being bent and the zipper after correction. That is, after the zipper is corrected, the large and small pieces after being bent are assembled to both sides of the zipper through the small piece changing device 14 and the large piece changing device 15, and then the overlapping position of the large piece and the zipper, as well as the overlapping position of the small piece and the zipper are pressed respectively by two oppositely arranged pressing pieces 2102 to complete the pre-pressing work before sewing.

[0074] A small piece loading workbench 2, a small piece loading conveying device 3 and a small piece alignment device 8 are arranged on one side outside the frame 1. The small piece loading workbench 2 is moved by a motor and a lead screw to load the small pieces. A large piece loading workbench 4, a large piece loading conveying device 5 and a large piece alignment device 6 are arranged on the other side outside the frame 1. The small piece loading workbench 2 is used to store small pieces and drive the small pieces to move along the Z-axis direction. The large piece loading workbench 4 is moved by a motor and a lead screw to load the large pieces. The small piece loading conveying device 3 is used to pick up small pieces and move the small pieces along the XZ-axis direction and place the small pieces at the small piece alignment device 8. The small piece alignment device 8 reciprocates to align the small pieces. The small piece loading conveying device 3 is moved along the Z-axis direction by a cylinder and a suction cup, and is also cooperated with a motor and a belt to move the small pieces to the small piece alignment device 8 along the X-axis.

[0075] The large-piece loading workbench 4 is used to store large pieces and drive the large pieces to move along the Z-axis direction. The large-piece loading conveying device 5 is used to pick up the large pieces on the large-piece loading workbench 4 and drive the large pieces to move along the XZ-axis direction and place the large pieces on the large-piece edge-aligning device 6. The large-piece edge-aligning device 6 reciprocates to align the large pieces. The large-piece edge-aligning device 6 moves along the Z-axis direction by means of a cylinder and a suction cup, and also cooperates with a motor and a belt to move the large piece to the large-piece edge-aligning device 6 along the X-axis.

[0076] A large piece refers to a relatively larger piece of cloth or other material, and a small piece refers to a relatively smaller piece of cloth or other material.

[0077] Further, regarding the small piece feeding conveyor device 3 and the large piece feeding conveyor device 5, the small piece feeding workbench 2 and the large piece feeding workbench 4 have basically the same structure, specifically, as Fig.23 , Fig.24 As shown, the large-sheet loading workbench 4 includes a limit baffle 41, a limit switch 42 and a loading truss 43. The limit baffle 41 is arranged on the large-sheet loading workbench 4 to facilitate the stacking and placement of large sheets and to limit the large sheets. The large-sheet loading workbench 4 can be driven up and down (i.e., in the Z-axis direction) by a corresponding driving cylinder. The limit switch 42 is used to control the movement height of the large-sheet loading workbench 4 to prevent the material from rising too high and interfering with subsequent loading. A suction cup for adsorbing large sheets is provided on the loading truss 43;

[0078] The large sheet edge device 6 includes an edge baffle 44, which is driven by an edge cylinder 44a installed on one side to ensure that the position of the large sheet on the workbench can be aligned to facilitate the next bending operation. The large sheet bending device 10 includes a bending plate 45 and a bending cylinder 45a for driving the bending plate 45 to move up and down (the small sheet bending device 9 has the same structure as this), such as Fig.23 , Fig.24 As shown, when the large piece is transferred to the right place, the Z-shaped bending plate moves downward, and then the upper protruding end of the bending plate drives the end of the large piece to bend downward, and the bending angle is about 90°. At this time, the clamping member on one side of the bending plate moves toward the large piece under the action of the clamping member's X-direction driving cylinder. After reaching the clampable position, the large piece is folded after the bent lower clamping plate 45d is inserted. The bent upper clamping plate 45c of the clamping member moves downward under the action of the clamping member's Z-direction driving cylinder 45e, and then clamps the folded piece to complete the clamping action; the next step is to move toward the large piece handover device 15 along the Y-axis direction under the action of the bending displacement device 11; the same is true for the small piece.

[0079] A small-piece bending device 9 and a small-piece pressing device 23 are arranged near the small-piece edge-to-edge device 8 on the frame 1. The small-piece pressing device 23 is arranged above the small-piece bending device 9. The small-piece pressing device 23 uses a cylinder as a driving source. A large-piece bending device 10 and a large-piece pressing device 24 are arranged near the large-piece edge-to-edge device 6 on the frame 1. The large-piece pressing device 24 uses a cylinder as a driving source. The large-piece pressing device 24 is arranged above the large-piece bending device 10. A Z-shaped bending plate is fixed on the small piece bending device 9, and the small piece bending device 9 is used to drive the bending plate on the small piece bending device 9 to move along the Z-axis direction to bend the small piece, and the small piece clamping device 23 moves along the Z-axis direction to fix the small piece. A Z-shaped bending plate is also fixed on the large piece bending device 10, and the large piece bending device 10 is used to drive the bending plate on the large piece bending device 10 to move along the XZ axis to bend the large piece, and the large piece clamping device 24 moves along the Z-axis direction to fix the large piece.

[0080] A bending displacement device 11 is arranged at the center position of the top of the frame 1, and a small piece changing device 14 and a large piece changing device 15 are also arranged on the frame 1. The bending displacement device 11 has two sets of clamping parts for clamping the large piece and the small piece, and the bending displacement device 11 moves along the XZ axis to move the small piece to the position of the small piece changing device 14, and the bending displacement device 11 moves along the XZ axis to move the large piece to the large piece changing device 15. The small piece changing device 14 clamps the small piece on the bending displacement device 11 and moves the small piece to the top of the zipper for assembly, and the large piece changing device 15 clamps the large piece on the bending displacement device 11 and moves the large piece to the top of the zipper for assembly, and the small piece, the large piece and the zipper are assembled together.

[0081] In the embodiment, the large piece bending device 10 moves along the Z axis and the X axis, the large piece is bent by the Z-shaped bending plate, the large piece and the small piece are clamped by the bending displacement device 11, the bending displacement device 11 moves along the Y axis to move the small piece to the position of the small piece changing device 14, the bending displacement device 11 moves along the Y axis to move the large piece to the position of the large piece changing device 15, the small piece is clamped by the small piece changing device 14 and moved to the top of the zipper, and the large piece changing device 15 clamps the small piece and moves it to the top of the zipper for assembly.

[0082] The frame 1 is provided with a sewing device 7, a discharging device 12, a sewing displacement device 13 and a discharging table 16 at a position away from the large piece edge device 6. The sewing displacement device 13 is used to clamp the assembled small pieces, large pieces and zippers and move the small pieces, large pieces and zippers along the Y axis to the position of the sewing device 7 for sewing. The discharging device 12 moves along the XZ axis and is used to pick up the sewn small pieces, large pieces and zippers and put the zippers on the discharging table 16. Fig.16As shown, the discharging device 12 uses four suction cups to absorb and transfer the sewn materials. The sewn materials include small pieces, large pieces and zippers. The small pieces 100 and the large pieces 200 are respectively located on both sides of the zipper 300.

[0083] Among them, the sewing displacement device 13 includes a sewing upper clamping plate 13a and a sewing lower clamping plate 13b. The sewing upper clamping plate 13a can move along the X-axis and Z-axis directions under the drive of the corresponding driving device, and the sewing lower clamping plate 13b can move along the Y-axis direction under the drive of the corresponding driving device. At the same time, the movement of the sewing lower clamping plate 13b will synchronously drive the sewing upper clamping plate 13a to move, that is, the assembled large piece, small piece and zipper can be wrapped around and pressed and fixed on the sewing lower clamping plate 13b through the movement of the sewing upper clamping plate 13a. In this process, the sewing pre-pressing device 21 will be withdrawn. At the same time, due to the existence of the small piece hand-changing device 14, the large piece hand-changing device 15 and the zipper positioning device 22, the positions of the large piece, the small piece and the zipper will not change. The sewing pre-pressing device 21 mainly plays the role of pressing before sewing; and, corresponding suture holes 13c are preset on the sewing upper clamping plate 13a and the sewing lower clamping plate 13b, and then the whole is transported to the position of the sewing device 7 for sewing through the movement of the sewing lower clamping plate 13b.

[0084] In this embodiment, the large piece and the zipper, as well as the small piece and the zipper are sewn synchronously by double needles.

[0085] In this embodiment, when working, the zipper is passed through the zipper guide device, one end of the zipper is automatically clamped by the zipper displacement device 18, and the zipper is moved along the Y-axis direction by the zipper displacement device 18 to move the zipper to a certain length, and the zipper transfer device 17 moves along the X-axis and the Z-axis, and the zipper is adsorbed by the zipper transfer device 17, and the zipper cutting device 19 is started to cut the zipper, and then the zipper transfer device 17 moves along the Z-axis direction, and the zipper transfer device 17 is placed at the zipper positioning device 22, and then one of the zipper positioning devices 22 is pressed to At one end of the zipper, by starting the zipper correction cylinder 2002, the zipper correction cylinder 2002 moves the zipper correction slider 2003, and the zipper correction slider 2003 moves the zipper correction strip 2005. Since the zipper correction strip 2005 is provided with an open groove that cooperates with the zipper protrusion, when the zipper correction strip 2005 moves, the zipper is straightened. After the other zipper positioning device 22 is pressed to the other end of the zipper, one end of the zipper is released. When the zipper correction strip 2005 returns to its original position, the zipper will be straightened again, and the zipper is corrected and fixed.

[0086] The small piece feeding and conveying device 3 moves along the Z axis and the X axis to place the small piece at the small piece alignment device 8, and then the small piece alignment device 8 aligns the small piece, and then the small piece pressing device 23 moves along the Z axis direction to press the small piece to prevent dislocation, and the small piece bending device 9 moves along the Z axis to bend the small piece through the Z-shaped bending plate. Similarly, the large piece is lifted by the large piece feeding workbench 4, and the large piece feeding and conveying device 5 moves along the Z axis and the X axis to place the large piece at the large piece bending device 10, and then the large piece bending device 10 aligns the large piece, and then the large piece pressing device 24 moves along the Z axis direction to press the large piece. To prevent dislocation, the large piece bending device 10 moves along the Z axis and the X axis, the large piece is bent by the Z-shaped bending plate, the large piece and the small piece are clamped by the bending displacement device 11, the bending displacement device 11 moves along the Y axis, the small piece is moved to the position of the small piece hand-changing device 14, the large piece is moved to the position of the large piece hand-changing device 15, the small piece is clamped by the small piece hand-changing device 14 and moved to the top of the zipper, the large piece hand-changing device 15 clamps the small piece and moves it to the top of the zipper for assembly, and then the overlapping position of the large piece and the zipper and the overlapping position of the small piece and the zipper are respectively pressed by two oppositely arranged pressing pieces 2102 to complete the pre-pressing work before sewing;

[0087] After being clamped and assembled by the sewing displacement device 13, the small piece, the large piece and the zipper are moved to the sewing device 7 for automatic sewing. After sewing is completed, the small piece, the large piece and the zipper are picked up by the discharge device 12 and placed on the discharge table 16, which is convenient for subsequent staff to take out the products, realizing automatic sewing with high sewing efficiency.

[0088] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A zipper double-folding three-in-one sewing machine, characterized by: The zipper double-folding three-in-one sewing machine comprises a frame (1), a zipper transfer device (17) arranged on the upper part of the frame (1), a zipper displacement device (18), a zipper cutting device (19), a zipper deviation correcting device (20), and a zipper positioning device (22). A small piece loading workbench (2), a small piece loading conveying device (3) and a small piece edge alignment device (8) are arranged on one side of the frame (1); A large-sheet loading workbench (4), a large-sheet loading conveying device (5) and a large-sheet edge alignment device (6) are arranged on the other side of the frame (1); The zipper displacement device (18) is used to pull a zipper of a predetermined length to the zipper cutting device (19) and cut it, and the zipper transfer device (17) is used to transfer the cut zipper to the zipper positioning device (22). The two sets of zipper positioning devices (22) located below the zipper deviation correcting device (20) are respectively used to fix the two ends of the zipper; The zipper deviation correction device (20) comprises a zipper correction fixing seat (2001), a zipper correction guide rail (2004) and a zipper correction slider (2003); the zipper correction guide rail (2004) is arranged on the zipper correction fixing seat (2001), and the zipper correction fixing seat (2001) is arranged on the frame (1); The zipper correction slider (2003) can be driven by an air cylinder and reciprocate on the zipper correction guide rail (2004); one end of the zipper correction slider (2003) is provided with a protruding zipper correction strip (2005); the bottom of the zipper correction strip (2005) is provided with an open groove (2006) that can cooperate with the zipper protrusion; The frame (1) is also provided with a sewing displacement device (13), which is used to clamp the assembled small piece, large piece and zipper and transfer the three to the position of the sewing device (7) for sewing; The small piece loading workbench (2) is used to store small pieces and drive the small pieces to move along the Z-axis direction, the small piece loading conveying device (3) is used to pick up small pieces and transfer the small pieces to the small piece alignment device (8), and the small piece alignment device (8) is used to perform an alignment operation on the small pieces before bending; The large-sheet loading workbench (4) is used to store the large sheets and drive the large sheets to move along the Z-axis direction. The large-sheet loading and conveying device (5) is used to pick up the large sheets and transfer the large sheets to the large-sheet edge alignment device (6). The large-sheet edge alignment device (6) is used to perform edge alignment operations on the large sheets before bending. The small-piece edge alignment device (8) and the large-piece edge alignment device (6) are each provided with at least one group, and each group of the small-piece edge alignment device (8) and the large-piece edge alignment device (6) comprises an edge alignment baffle (44) and a corresponding edge alignment cylinder (44a), and the edge alignment operation of the small piece or the large piece before bending is performed through the reciprocating motion of the edge alignment baffle (44); A small piece bending device (9) and a small piece pressing device (23) are provided on the frame (1) at a position close to the small piece edge-to-edge device (8), wherein the small piece pressing device (23) is provided above the small piece bending device (9), and the small piece pressing device (23) is used to press and fix the small piece to be bent; A large-sheet bending device (10) and a large-sheet pressing device (24) are provided on the frame (1) at a position close to the large-sheet edge-aligning device (6); the large-sheet pressing device (24) is provided above the large-sheet bending device (10); and the large-sheet pressing device (24) is used to press and fix the large sheet to be bent; The small-piece bending device (9) and the large-piece bending device (10) both comprise a bending plate (45) and a bending cylinder (45a), wherein the bending cylinder (45a) is used to drive the bending plate (45) to move up and down, and when the bending plate (45) moves downward, it can be used to bend the large piece or the small piece; A bending displacement device (11) is provided between the small-piece pressing device (23) and the large-piece pressing device (24); a small-piece hand-changing device (14) is provided on the same side of the small-piece pressing device (23); and a large-piece hand-changing device (15) is provided on the same side of the large-piece pressing device (24); The bending displacement device (11) has two groups of clamping parts for clamping the bent large sheet and the small sheet respectively. The bending displacement device (11) moves the small sheet to the position of the small sheet changing device (14) and the large sheet to the position of the large sheet changing device (15). The small piece transfer device (14) clamps the small piece and transfers it to the upper side of the zipper to wait for assembly. The large piece transfer device (15) clamps the large piece and transfers it to the other side above the zipper to wait for assembly.

2. A zipper double-folding three-in-one sewing machine according to claim 1, characterized in that: A sewing pre-pressing device (21) is also provided above the zipper deviation-correcting device (20), wherein the sewing pre-pressing device (21) comprises a compression strip (2101), wherein the compression strip (2101) comprises two compression plates (2102) arranged opposite to each other, and wherein the compression plates (2102) can be used to compress the two sides of the zipper.

3. The zipper double-folding three-in-one sewing machine according to claim 1, characterized in that: The frame (1) is also provided with a sewing device (7), a discharging device (12) and a discharging table (16). The discharging device (12) is used to pick up the sewn small pieces, large pieces and zippers and place the zippers on the discharging table (16).

4. The zipper double-folding three-in-one sewing machine according to claim 3, characterized in that: The sewing displacement device (13) comprises an upper sewing clamping plate (13a) and a lower sewing clamping plate (13b). The upper sewing clamping plate (13a) and the lower sewing clamping plate (13b) can move respectively under corresponding driving devices, and the movement of the lower sewing clamping plate (13b) will synchronously drive the upper sewing clamping plate (13a) to move. The assembled large piece, small piece and zipper are surrounded, pressed and fixed on the lower sewing clamp (13b) by the upper sewing clamp (13a), and corresponding sewing holes (13c) are also provided on the upper sewing clamp (13a) and the lower sewing clamp (13b). The assembled large piece, small piece and zipper are transferred to the position of the sewing device (7) for sewing by the movement of the lower sewing clamp (13b); The sewing device (7) adopts a double-needle flat-bed sewing machine.

5. The zipper double-folding three-in-one sewing machine according to claim 1, characterized in that: The zipper transfer device (17), the zipper displacement device (18), the zipper deviation correction device (20), and the zipper positioning device (22) are driven by a cylinder or a motor and by corresponding guide rails and slider structures to achieve movement in at least one of the three directions of the XYZ axes.

6. The zipper double-folding three-in-one sewing machine according to claim 1, characterized in that: The zipper cutting device (19) adopts pneumatic scissors; The zipper transfer device (17) comprises at least two pneumatic suction cups.

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