Leather fabric wrinkle sewing equipment and sewing process thereof

Abstract

The invention provides leather fabric wrinkle sewing equipment and a sewing process thereof, and relates to the technical field of sewing equipment.The leather fabric wrinkle sewing equipment comprises a rack, a leather pressing and moving device, a leather sewing device, a wrinkle drawing and cutting device and a thread end cutting device are arranged on the rack, the leather sewing device comprises a plurality of sewing machine heads, and the wrinkle drawing and cutting device comprises a plurality of rotating discs; a first sliding frame is installed on each rotating disc in a sliding mode, a thread pulling tool bit is installed on the first sliding frame in a sliding mode, a sewing thread cutting supporting plate is arranged on the first sliding frame, and a cutting tool groove corresponding to the thread pulling tool bit is formed in the sewing thread cutting supporting plate. The sewing efficiency of the wrinkles of the leather fabric is improved, the leather material supporting performance is better, the formed wrinkles are not prone to deformation and high in durability, filler does not need to be placed in the wrinkles, and the process steps and cost are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sewing equipment, in particular to a leather fabric wrinkle sewing equipment and a sewing process thereof. Background Art

[0002] With the development of economy, people have higher and higher requirements for the aesthetics of clothes, bags, interior decorations and other accessories, and accessories with more design sense are gradually welcomed by people. Cloth is used in the process of making clothes, bags, interior decorations and other accessories. Nowadays, folds are formed in the cloth by hand sewing to increase the design sense of accessories to meet people's requirements for aesthetics and personalization. However, such folds can only be sewn by hand, which is not only inefficient but also has poor consistency of folds. At the same time, due to the soft material of the cloth, the folds formed are easy to deform and have poor durability. Fillers need to be placed in the folds to support the folds, which increases the process steps and cost of accessory production.

[0003] Therefore, a leather fabric wrinkle sewing device and a sewing process thereof are needed to solve the above-mentioned problems. Summary of the invention

[0004] The present invention proposes a leather fabric wrinkle sewing device and a sewing process thereof, which adopts leather as raw material, realizes the automatic sewing of leather fabric wrinkles, and improves the sewing efficiency of leather fabric wrinkles. Compared with cloth, leather material has better support, so that the formed wrinkles are not easy to deform and have high durability. There is no need to place fillers in the wrinkles, which reduces the process steps and costs.

[0005] The technical solution of the present invention is achieved in this way:

[0006] The leather fabric wrinkle sewing equipment comprises a frame, an operating table is horizontally arranged on the frame, and the frame is provided with:

[0007] A leather pressing and moving device for pressing and moving the leather in the XY axis;

[0008] A leather sewing device for performing multi-position synchronous sewing of the leather, the leather sewing device comprising a gantry fixedly mounted on the frame, a plurality of sewing machine heads arranged along the Y-axis direction fixedly mounted on the gantry, the sewing machine heads being vertically arranged along the Z-axis and located above the horizontal operating table;

[0009] A pleating and cutting device for cutting and pulling the sewing thread near the side of the sewing machine head after the leather is sewn, the pleating and cutting device comprising a plurality of rotating disks for switching between a first sewing area and a second sewing area, each of the rotating disks being rotatably mounted on the gantry, all of the rotating disks being arranged along the Y-axis direction, the rotating disks corresponding to the sewing machine heads one by one, each of the sewing machine heads passing through the corresponding rotating disks, a first sliding frame being slidably mounted along the X-axis direction on each of the rotating disks, a thread pulling cutter head being slidably mounted along the X-axis direction on the first sliding frame, a sewing thread cutting support plate being provided on the first sliding frame, and a cutting knife groove corresponding to the thread pulling cutter head being provided on the sewing thread cutting support plate;

[0010] The utility model also comprises a thread end cutting device for cutting the sewing thread end close to one side of the leather after the leather is sewn.

[0011] As a preferred technical solution, the thread cutting device includes a plurality of second sliding frames slidably installed on the corresponding rotating disk along the X-axis direction, each of the second sliding frames is rotatably installed with a wire wheel for guiding the sewing thread, the wire wheel has a limiting ring groove, and mounting grooves are respectively provided at both ends of the guide wheel, and a wire cutting knife is hinged in each of the mounting grooves, and the two wire cutting knives are respectively arranged on both sides of the limiting ring groove, a compression spring is arranged between the two wire cutting knives, and a wire cutting knife limiting block is respectively provided on the outer side of the two wire cutting knives, and the two limiting blocks are both arranged on the wire wheel, and a cutting protrusion is provided on the outer side of each wire cutting knife, and an extrusion wheel for making the two wire cutting knives move relative to each other is respectively provided on both sides of the wire wheel.

[0012] As a preferred technical solution, the operating table is provided with a first through slot adapted to the first sewing area and a second through slot adapted to the second sewing area, each sewing needle on the sewing machine head is arranged between the first through slot and the second through slot, each rotating disk is slidably installed with a pressure rod mounting frame along the Z-axis direction, and the pressure rod mounting frame is hinged with an elastic pressure rod for alternately cooperating with the first through slot and the second through slot for auxiliary pleating, a tension spring is arranged between each elastic pressure rod and the corresponding pressure rod mounting frame, and a pressure rod limit block is fixedly installed on each pressure rod mounting frame.

[0013] As a preferred technical solution, the leather pressing moving device includes a first sliding plate slidably installed on the frame along the X-axis direction, a third sliding frame slidably installed on the first sliding plate along the Y-axis direction, a leather support plate, a first leather pressing plate and a second leather pressing plate are horizontally arranged above the operating table, the leather support plate, the first leather pressing plate and the second leather pressing plate all extend along the Y-axis direction, both ends of the leather support plate are fixedly installed on the third sliding frame, the first leather pressing plate is slidably installed on the third sliding frame along the Z-axis direction, two second sliding plates are slidably installed on the third sliding frame along the X-axis direction, and the two ends of the second leather pressing plate are respectively slidably installed on the corresponding second sliding plates along the Z-axis direction.

[0014] As a preferred technical solution, the leather support plate is provided with a first avoidance groove for avoiding the first sewing area and a second avoidance groove for avoiding the second sewing area.

[0015] As a preferred technical solution, a leather cutting groove is provided on the operating table, a reeling shaft is rotatably mounted on the operating table, and the leather cutting groove and the reeling shaft are arranged on both sides of the gantry.

[0016] The sewing process of the leather fabric wrinkle sewing device specifically comprises the following steps:

[0017] S1, the leather is placed on the operating table with the back side facing upward, the leather pressing and moving device presses the first sewing area on the leather and moves and adjusts it in the XY axis direction, after which the first sewing point A1, the first sewing point A2, and the first sewing point A3 of the first sewing area are respectively located below the sewing needle on the corresponding sewing machine head;

[0018] S2, the sewing machine head sews and fixes the first sewing point A1, the first sewing point A2, and the first sewing point A3 of the first sewing area at the same time, and one end of the sewing thread is fixed and then passes through the first sewing point A1, the first sewing point A2, and the first sewing point A3 respectively;

[0019] S3, the leather pressing moving device moves and adjusts the leather in the XY axis direction, the second stitching point B1, the second stitching point B2, and the second stitching point B3 of the first sewing area are respectively moved to the lower side of the corresponding sewing needle, the sewing thread is respectively pulled from the first stitching point A1, the first stitching point A2, and the first stitching point A3 to the second stitching point B1, the second stitching point B2, and the second stitching point B3, under the action of the sewing machine head, the sewing thread passes through the second stitching point B1, the second stitching point B2, and the second stitching point B3, and the sewing needles are all raised;

[0020] S4, the thread pulling knife head and the corresponding sewing thread cutting support plate cooperate to clamp and cut the corresponding sewing thread on the side close to the corresponding machine head, the first sliding frame moves in the direction away from the machine head, the sewing thread between the first stitching point A1 and the second stitching point B1, the first stitching point A2 and the second stitching point B2, the first stitching point A3 and the second stitching point B3 is pulled out, and the corresponding sewing thread head is fixed at the second stitching point B1, the second stitching point B2, and the second stitching point B3 respectively through the sewing machine head. At this time, the leather at the first stitching point A1, the first stitching point A2, and the first stitching point A3 is pulled to the second stitching point B1, the second stitching point B2, and the second stitching point B3 respectively, and the corresponding thread head is cut close to the leather end by the thread head cutting device, and the sewing of the pleated shape of the first sewing area is completed;

[0021] S5, the rotating disk rotates 90 degrees counterclockwise, the pleating cutting device and the thread cutting device are adapted to the second sewing area, and steps S1, S2, S3 and S4 are repeated to sew the second sewing area, that is, the sewing of the pleated shape of the second sewing area is completed;

[0022] S6, repeating step S1, allowing the leather to enter the next two sewing areas, and then repeating steps S2, S3, S4 and S5, the wrinkle shaping sewing of the entire leather fabric can be achieved.

[0023] In step S4, during the process of pulling the sewing thread of the first sewing area, under the action of the tension spring, the lower end of the elastic pressure rod presses the leather of the first sewing area into the first avoidance groove to assist in the wrinkle forming of the first sewing area.

[0024] In step S5, during the process of pulling the sewing thread of the second sewing area, under the action of the tension spring, the lower end of the elastic pressure rod presses the leather of the second sewing area into the second avoidance groove to assist in the wrinkle forming of the second sewing area.

[0025] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0026] Since the leather fabric wrinkle sewing equipment and its sewing process include a leather pressing moving device, a leather sewing device, a pleating cutting device and a thread end cutting device, during the use of the equipment, the leather can be pressed and adjusted in the XY axis direction by the leather pressing moving device, after the first sewing area is sewn by the leather sewing device, the thread pulling knife head and the sewing thread cutting support plate clamp and pull one end of the sewing thread to form wrinkles on the leather, the sewing machine head sews and fixes the sewing thread end, and the thread end cutting device cuts the sewing thread end, thus completing the sewing of wrinkles on the first sewing area of ​​the leather, and after the rotating disk rotates 90 degrees to adapt to the second sewing area, the leather wrinkles are sewn in the second sewing area, and this reciprocating process can realize the automatic sewing of wrinkles on the leather fabric.

[0027] In the present invention, leather is used as the raw material for pleat sewing, the leather pressing and moving device realizes the pressing and moving of the leather, the leather sewing device realizes the multi-position synchronous sewing of the leather, the pleating cutting device and the thread end cutting device realize the cutting of the sewing thread after the leather is sewn and the fixation close to the leather end, thereby realizing the automatic sewing of the pleats of the leather fabric, greatly improving the sewing efficiency of the leather fabric pleats, and the automatic sewing of the pleats has high consistency. Compared with cloth, the leather material has better support, so that the formed pleats are not easy to deform and have high durability. There is no need to place fillers in the pleats, which reduces the process steps and costs.

[0028] Since the leather fabric wrinkle sewing equipment and its sewing process include a thread end cutting device, after the leather is sewn, the end of the sewing thread close to the sewing machine head is cut and clamped by the pleating cutting device. At the same time, the second sliding frame moves in a direction away from the first sliding frame, the guide roller moves to a position that affects the sewing machine head and stops, the sewing thread is located in the limiting ring groove of the guide roller, the first sliding frame moves in a direction away from the second sliding frame, the sewing thread on the leather is drawn out, and the leather is wrinkled. The sewing thread end is fixed to the leather by the sewing machine head, the guide roller rotates, and the two extrusion wheels squeeze the cutting protrusion in a direction close to the sewing thread end, and the two thread cutters cut the end of the sewing thread end close to the leather, thereby realizing automatic cutting of the sewing thread end on the leather.

[0029] In the present invention, after the sewing machine head fixes the sewing thread end, the two extrusion wheels push the cutting protrusion so that the two thread cutting knives cut the sewing thread end close to the leather, thereby realizing automatic cutting of the thread end on the leather, avoiding the subsequent process of manual thread cutting, and improving the sewing efficiency of leather fabric wrinkles.

[0030] Since the leather fabric pleating sewing equipment includes a leather pressing and moving device, when the position of the leather needs to be adjusted, the leather is pressed against the leather support plate by the first leather pressing plate and the second leather pressing plate, and the leather support plate, the first leather pressing plate and the second leather pressing plate move simultaneously in the X-axis or Y-axis direction, thereby realizing the adjustment of the leather position.

[0031] Since the leather fabric wrinkle sewing equipment includes an elastic pressure rod, during the process of pulling the sewing thread in the first sewing area, after the first leather pressing plate and the second leather pressing plate are raised, the elastic pressure rod can press the leather down into the first through groove, applying force to the leather wrinkle forming, which has the function of assisting the forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 for Figure 1 The main view;

[0035] Figure 3 for Figure 2 The enlarged structural diagram at C in the middle;

[0036] Figure 4 for Figure 1 Left view of;

[0037] Figure 5 for Figure 4 The enlarged structural diagram at D in the middle;

[0038] Figure 6 A reference diagram of the state in which the pleating cutting device cuts the sewing thread close to one end of the sewing machine head;

[0039] Figure 7 for Figure 6 The enlarged structural diagram at E in the middle;

[0040] Figure 8 This is a reference diagram of the thread cutting device cutting off the sewing thread near one end of the leather;

[0041] Fig. 9 is a schematic diagram of the structure of one of the inner rings and the corresponding outer ring;

[0042] Fig.10 It is a structural schematic diagram of a leather pallet.

[0043] Among them: 1. Frame; 2. Operating table; 3. Leather; 4. Gantry; 5. Sewing machine head; 6. Sewing thread; 7. First sewing area; 8. Second sewing area; 9. Rotating plate; 10. First sliding frame; 11. Thread pulling knife head; 12. Sewing thread cutting support plate; 13. Cutting knife groove; 14. Second sliding frame; 15. Guide wheel; 16. Limiting ring groove; 17. Mounting groove; 18. Thread cutting knife; 19. Compression spring ; 20, thread cutter limit block; 21, cutting protrusion; 22, extrusion wheel; 23, first through slot; 24, second through slot; 25, pressure rod mounting frame; 26, elastic pressure rod; 27, tension spring; 28, pressure rod limit block; 29, first sliding plate; 30, third sliding frame; 31, leather support plate; 32, first leather pressure plate; 33, second leather pressure plate; 34, second sliding plate; 35, first avoidance through slot; 36. Second avoidance slot; 37. Leather cutting slot; 38. Unwinding shaft; 39. Gear drive motor; 40. Gear; 41. Outer ring; 42. External meshing teeth; 43. Inner ring; 44. Rolling element; 45. First sliding frame rail; 46. Second sliding frame rail; 47. Wire drawing cutter head drive cylinder; 48. Wire pulley drive motor; 49. Pressure rod mounting frame drive cylinder; 50. First sliding plate rail; 51. First screw rod; 52. First nut; 53. Third sliding frame rail; 54. Third sliding frame drive cylinder; 55. First pressure plate lifting rail; 56. First pressure plate lifting drive cylinder; 57. Second sliding plate rail; 58. Second screw rod; 59. Second nut; 60. Second pressure plate lifting rail; 61. Second pressure plate lifting drive cylinder; 62. Unwinding drive motor; 63. Horizontal plane; 64. Sewing needle. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Embodiment 1:

[0046] like Figure 1-Figure 10 As shown in the figure, the leather fabric pleat sewing equipment comprises a frame 1, an operating table 2 is horizontally arranged on the frame 1, and the frame 1 is provided with:

[0047] A leather pressing and moving device for pressing the leather 3 and moving the leather 3 in the XY axis.

[0048] A leather sewing device for performing multi-position synchronous sewing of leather 3, the leather sewing device includes a gantry 4 fixedly mounted on a frame 1, a plurality of sewing machine heads 5 arranged along the Y-axis direction are fixedly mounted on the gantry 4, and the sewing machine heads 5 are vertically arranged along the Z-axis and located above the horizontal operating table 2.

[0049] A pleating and cutting device is used for cutting and pulling the sewing thread 6 near the side of the sewing machine head 5 after the leather 3 is sewn. The pleating and cutting device includes a plurality of rotating disks 9 for switching between the first sewing area 7 and the second sewing area 8. Each rotating disk 9 is rotatably installed on the gantry 4. All rotating disks 9 are arranged along the Y-axis direction. The rotating disks 9 correspond to the sewing machine heads 5 one by one. Each sewing machine head 5 passes through the corresponding rotating disk 9. A first sliding frame 10 is slidably installed along the X-axis direction on each rotating disk 9. A thread pulling knife head 11 is slidably installed along the X-axis direction on the first sliding frame 10. A sewing thread cutting support plate 12 is provided on the first sliding frame 10. The sewing thread cutting support plate 12 is provided with a cutting knife groove 13 corresponding to the thread pulling knife head 11.

[0050] It also includes a thread cutting device for cutting the sewing thread ends close to one side of the leather 3 after the leather 3 is sewn.

[0051] like Figure 1-Figure 3 and Fig. 9 As shown together, the thread cutting device includes a plurality of second sliding frames 14 slidably mounted on the corresponding rotating disk 9 along the X-axis direction, and a guide wheel 15 for guiding the sewing thread 6 is rotatably mounted on each second sliding frame 14, the guide wheel 15 has a limiting ring groove 16, and mounting grooves 17 are respectively arranged at both ends of the guide wheel, and a thread cutter 18 is hinged in each mounting groove 17, and the two thread cutters 18 are respectively arranged on both sides of the limiting ring groove 16, and a compression spring 19 is arranged between the two thread cutters 18, and a thread cutter limiting block 20 is respectively arranged on the outer side of the two thread cutters 18, and the two limiting blocks are both arranged on the guide wheel 15, and a cutting protrusion 21 is arranged on the outer side of each thread cutter 18, and an extrusion wheel 22 for making the two thread cutters 18 move relative to each other is respectively arranged on both sides of the guide wheel 15.

[0052] The operating table 2 is provided with a first through slot 23 adapted to the first sewing area 7 and a second through slot 24 adapted to the second sewing area 8. The sewing needle 64 on each sewing machine head 5 is arranged between the first through slot 23 and the second through slot 24. A pressure rod mounting frame 25 is slidably installed on each rotating disk 9 along the Z-axis direction. The pressure rod mounting frame 25 is hinged with an elastic pressure rod 26 for alternately cooperating with the first through slot 23 and the second through slot 24 to assist in pleating. A tension spring 27 is arranged between each elastic pressure rod 26 and the corresponding pressure rod mounting frame 25. A pressure rod limit block 28 is fixedly installed on each pressure rod mounting frame 25.

[0053] like Figure 1-Figure 5 As shown together, the leather pressing moving device includes a first sliding plate 29 slidably installed on the frame 1 along the X-axis direction, a third sliding frame 30 is slidably installed on the first sliding plate 29 along the Y-axis direction, a leather support plate 31, a first leather pressing plate 32 and a second leather pressing plate 33 are horizontally arranged above the operating table 2, the leather support plate 31, the first leather pressing plate 32 and the second leather pressing plate 33 all extend along the Y-axis direction, both ends of the leather support plate 31 are fixedly installed on the third sliding frame 30, the first leather pressing plate 32 is slidably installed on the third sliding frame 30 along the Z-axis direction, two second sliding plates 34 are slidably installed on the third sliding frame 30 along the X-axis direction, and both ends of the second leather pressing plate 33 are slidably installed on the corresponding second sliding plates 34 along the Z-axis direction.

[0054] like Fig.10 As shown, the leather support plate 31 is provided with a first avoidance groove 35 for avoiding the first sewing area 7 and a second avoidance groove 36 for avoiding the second sewing area 8 .

[0055] A leather cutting groove 37 is provided on the operating table 2, and a reel 38 is rotatably installed on the operating table 2. The leather cutting groove 37 and the reel 38 are arranged on both sides of the gantry 4. In the present invention, when a section of leather 3 is completed with wrinkles sewn, when the leather 3 with wrinkles needs to be used, the leather 3 can be cut at the leather cutting groove 37 by holding a leather cutting knife.

[0056] like Figure 3 and Fig. 9 As shown in common, a plurality of gears 40 driven by a gear drive motor 39 are rotatably mounted on the gantry 4, the gear drive motor 39 is fixedly mounted on the gantry 4, an outer ring 41 is fixedly mounted on the top of each rotating disk 9, and an outer meshing tooth 42 meshing with the corresponding gear 40 is provided on the outer circumferential surface of each outer ring 41, an inner ring 43 is rotatably mounted on the inner side of each outer ring 41, a plurality of rolling bodies 44 are provided between each inner ring 43 and the corresponding outer ring 41, and each inner ring 43 is fixedly mounted on the gantry 4.

[0057] A first sliding frame rail 45 and a second sliding frame rail 46 are fixedly installed on each rotating disk 9 along the X-axis direction, each first sliding frame 10 is slidably installed on the corresponding first sliding frame rail 45, and each second sliding frame 14 is slidably installed on the corresponding second sliding frame rail 46. A first sliding frame rail 45 driving cylinder and a second sliding frame rail 46 driving cylinder are fixedly installed on each rotating disk 9, the piston rod of the first sliding frame driving cylinder is connected to the first sliding frame 10, and the piston rod of the second sliding frame driving cylinder is connected to the second sliding frame 14.

[0058] A wire-pulling cutter head driving cylinder 47 for driving the corresponding wire-pulling cutter head 11 to move along the X-axis direction is fixedly mounted on each first sliding frame 10 , and a piston rod of each wire-pulling cutter head driving cylinder 47 is connected to the corresponding wire-pulling cutter head 11 .

[0059] A wire wheel driving motor 48 for driving the corresponding wire wheel 15 to rotate is fixedly mounted on each second sliding frame 14 , and each wire wheel driving motor 48 is drivingly connected to the corresponding wire wheel 15 .

[0060] A pressure rod mounting frame driving cylinder 49 for driving the corresponding pressure rod mounting frame 25 to rise and fall is fixedly mounted on each rotating disk 9 , and a piston rod of the pressure rod mounting frame driving cylinder 49 is fixedly connected to the corresponding pressure rod mounting frame 25 .

[0061] like Figure 2-Figure 7 As shown together, two first sliding plate rails 50 extending along the X-axis direction are fixedly installed on the frame 1, and the first sliding plate rails 50 are slidably installed on the two first sliding plate rails 50. A first screw rod 51 driven by a first screw drive motor is rotatably installed on the frame 1. The first screw drive motor is fixedly installed on the frame 1, and a first nut 52 is threadedly installed on the first screw rod 51. The first nut 52 is fixedly connected to the first sliding plate 29.

[0062] Two pairs of third sliding frame rails 53 are arranged on the first sliding plate 29 along the Y-axis, and the third sliding frame 30 is slidably installed on the four third sliding frame rails 53. A third sliding frame driving cylinder 54 is fixedly installed on the first sliding plate 29, and the piston rod of the third sliding frame driving cylinder 54 is fixedly connected to the third sliding frame 30.

[0063] Two first pressure plate lifting rails 55 are fixedly installed on the third sliding frame 30 along the Z-axis, and the two ends of the first leather pressure plate 32 are respectively slidably installed on the corresponding first pressure plate lifting rails 55. Two first pressure plate lifting drive cylinders 56 are fixedly installed on the third sliding frame 30, and the piston rods of the two first pressure plate lifting drive cylinders 56 are respectively fixedly connected to the two ends of the first leather pressure plate 32.

[0064] A pair of second sliding plate rails 57 are arranged on the third sliding frame 30 along the X-axis direction, and each second sliding plate 34 is slidably installed on the corresponding second sliding plate rail 57. A second screw rod 58 driven by a second screw rod driving motor is rotatably installed on the third sliding frame 30. The second screw rod 58 is fixedly installed with a second nut 59, and the second nut 59 is fixedly connected to one of the second sliding plates 34.

[0065] Two second pressure plate lifting rails 60 are fixedly installed on each second sliding plate 34 along the Z axis, and the two ends of the second leather pressure plate 33 are respectively slidably installed on the corresponding second pressure plate lifting rails 60. A second pressure plate lifting drive cylinder 61 is fixedly installed on each second sliding plate 34, and the piston rods of the two second pressure plate lifting drive cylinders 61 are respectively fixedly connected to the two ends of the second leather pressure plate 33.

[0066] An unwinding shaft driving motor 62 is fixedly mounted on the operating platform 2 , and the unwinding shaft driving motor 62 is transmission-connected to the unwinding shaft 38 .

[0067] In the present invention, the leather cutting knife, the first carriage driving cylinder, the second carriage driving cylinder, the first lead screw driving motor and the second lead screw driving motor are not shown in the figure.

[0068] Embodiment 2:

[0069] The sewing process of the leather fabric pleat sewing equipment specifically includes the following steps:

[0070] S1. The leather 3 is placed with the back side facing upward on the operating table 2. The leather pressing and moving device presses the first sewing area 7 on the leather 3 and moves and adjusts it in the XY axis direction. After the adjustment, the first sewing point A1, the first sewing point A2, and the first sewing point A3 of the first sewing area 7 are respectively located below the sewing needle 64 on the corresponding sewing machine head 5.

[0071] S2, the sewing machine head 5 sews and fixes the first sewing point A1, the first sewing point A2, and the first sewing point A3 of the first sewing area 7 at the same time, and one end of the sewing thread 6 is fixed and then passes through the first sewing point A1, the first sewing point A2, and the first sewing point A3 respectively.

[0072] S3, the leather pressing moving device moves and adjusts the leather 3 in the XY axis direction, and the second sewing point B1, the second sewing point B2, and the second sewing point B3 of the first sewing area 7 are respectively moved to the bottom of the corresponding sewing needle 64, and the sewing thread 6 is respectively pulled from the first sewing point A1, the first sewing point A2, and the first sewing point A3 to the second sewing point B1, the second sewing point B2, and the second sewing point B3. Under the action of the sewing machine head 5, the sewing thread 6 passes through the second sewing point B1, the second sewing point B2, and the second sewing point B3, and the sewing needles 64 are all raised.

[0073] S4, the thread pulling knife head 11 and the corresponding sewing thread cutting support plate 12 cooperate to clamp and cut the corresponding sewing thread 6 close to the corresponding machine head, the first sliding frame 10 moves away from the machine head, and the sewing thread 6 between the first sewing point A1 and the second sewing point B1, the first sewing point A2 and the second sewing point B2, and the first sewing point A3 and the second sewing point B3 is pulled out, and the sewing machine head 5 has an automatic thread breaking function. The corresponding sewing thread heads are sewn and fixed at the second sewing point B1, the second sewing point B2, and the second sewing point B3 through the sewing machine head 5, and the thread is automatically broken. At this time, the leather 3 at the first sewing point A1, the first sewing point A2, and the first sewing point A3 are pulled to the second sewing point B1, the second sewing point B2, and the second sewing point B3 respectively, and the corresponding thread heads are cut close to the end of the leather 3 through the thread head cutting device, thereby completing the sewing of the pleated shape of the first sewing area 7.

[0074] During the process of pulling the sewing thread 6 of the first sewing area 7, under the action of the tension spring 27, the lower end of the elastic pressure rod 26 presses the leather 3 of the first sewing area 7 into the first avoidance groove 35 to assist the wrinkle forming of the first sewing area 7.

[0075] S5, the rotating disk 9 rotates 90 degrees counterclockwise, the pleating cutting device and the thread cutting device are adapted to the second sewing area 8, and steps S1, S2, S3 and S4 are repeated to sew the second sewing area 8, thus completing the sewing of the pleated shape of the second sewing area 8.

[0076] During the process of pulling the sewing thread 6 of the second sewing area 8, under the action of the tension spring 27, the lower end of the elastic pressure rod 26 presses the leather 3 of the second sewing area 8 into the second avoidance groove 36 to assist the wrinkle forming of the second sewing area 8.

[0077] S6, repeat step S1, make the leather 3 enter the next two sewing areas, and then repeat steps S2, S3, S4 and S5, so as to achieve the wrinkle shape sewing of the entire leather fabric.

[0078] In summary, the present invention adopts leather as raw material, realizes the automatic sewing of leather fabric wrinkles, and improves the sewing efficiency of leather fabric wrinkles. Compared with cloth, leather material has better support, so that the wrinkles of the leather fabric after molding are not easy to deform and have high durability. There is no need to place fillers in the wrinkles, which reduces the process steps and costs.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A leather fabric wrinkle sewing device, comprising a frame, on which an operating table is horizontally arranged, characterized in that: The frame is provided with: A leather pressing and moving device for pressing and moving the leather in the XY axis; A leather sewing device for performing multi-position synchronous sewing of the leather, the leather sewing device comprising a gantry fixedly mounted on the frame, a plurality of sewing machine heads arranged along the Y-axis direction fixedly mounted on the gantry, the sewing machine heads being vertically arranged along the Z-axis and located above the horizontal operating table; A pleating and cutting device for cutting and pulling the sewing thread near the side of the sewing machine head after the leather is sewn, the pleating and cutting device comprising a plurality of rotating disks for switching between a first sewing area and a second sewing area, each of the rotating disks being rotatably mounted on the gantry, all of the rotating disks being arranged along the Y-axis direction, the rotating disks corresponding to the sewing machine heads one by one, each of the sewing machine heads passing through the corresponding rotating disks, a first sliding frame being slidably mounted along the X-axis direction on each of the rotating disks, a thread pulling cutter head being slidably mounted along the X-axis direction on the first sliding frame, a sewing thread cutting support plate being provided on the first sliding frame, and a cutting knife groove corresponding to the thread pulling cutter head being provided on the sewing thread cutting support plate; The utility model also comprises a thread end cutting device for cutting the sewing thread end close to one side of the leather after the leather is sewn.

2. The leather fabric wrinkle sewing device according to claim 1, characterized in that: The thread cutting device includes a plurality of second sliding frames slidably mounted on the corresponding rotating disks along the X-axis direction, each of the second sliding frames is rotatably mounted with a wire wheel for guiding the sewing thread, the wire wheel has a limiting ring groove, and mounting grooves are respectively arranged at both ends of the guide wheel, a wire cutting knife is hinged in each mounting groove, the two wire cutting knives are respectively arranged on both sides of the limiting ring groove, a compression spring is arranged between the two wire cutting knives, a wire cutting knife limiting block is respectively arranged on the outer side of the two wire cutting knives, the two limiting blocks are both arranged on the wire wheel, a cutting protrusion is arranged on the outer side of each wire cutting knife, and an extrusion wheel for making the two wire cutting knives move relative to each other is respectively arranged on both sides of the wire wheel.

3. The leather fabric wrinkle sewing device according to claim 1, characterized in that: The operating table is provided with a first through slot adapted to the first sewing area and a second through slot adapted to the second sewing area, each sewing needle on the sewing machine head is arranged between the first through slot and the second through slot, each rotating disk is slidably mounted with a pressure rod mounting frame along the Z-axis direction, and the pressure rod mounting frame is hinged with an elastic pressure rod for alternately cooperating with the first through slot and the second through slot for auxiliary pleating, a tension spring is arranged between each elastic pressure rod and the corresponding pressure rod mounting frame, and a pressure rod limit block is fixedly mounted on each pressure rod mounting frame.

4. The leather fabric wrinkle sewing device according to claim 1, characterized in that: The leather pressing moving device includes a first sliding plate slidably mounted on the frame along the X-axis direction, a third sliding frame slidably mounted on the first sliding plate along the Y-axis direction, a leather support plate, a first leather pressing plate and a second leather pressing plate are horizontally arranged above the operating table, the leather support plate, the first leather pressing plate and the second leather pressing plate all extend along the Y-axis direction, both ends of the leather support plate are fixedly mounted on the third sliding frame, the first leather pressing plate is slidably mounted on the third sliding frame along the Z-axis direction, two second sliding plates are slidably mounted on the third sliding frame along the X-axis direction, and both ends of the second leather pressing plate are respectively slidably mounted on the corresponding second sliding plates along the Z-axis direction.

5. The leather fabric wrinkle sewing device according to claim 4, characterized in that: The leather support plate is provided with a first avoidance groove for avoiding the first sewing area and a second avoidance groove for avoiding the second sewing area.

6. The leather fabric wrinkle sewing device according to claim 1, characterized in that: The operating table is provided with a leather cutting groove, and a reeling shaft is rotatably mounted on the operating table. The leather cutting groove and the reeling shaft are arranged on both sides of the gantry.

7. The sewing process of the leather fabric wrinkle sewing equipment according to any one of claims 1 to 6, characterized in that: The specific steps include: S1, the leather is placed on the operating table with the back side facing upward, the leather pressing and moving device presses the first sewing area on the leather and moves and adjusts it in the XY axis direction, after which the first sewing point A1, the first sewing point A2, and the first sewing point A3 of the first sewing area are respectively located below the sewing needle on the corresponding sewing machine head; S2, the sewing machine head sews and fixes the first sewing point A1, the first sewing point A2, and the first sewing point A3 of the first sewing area at the same time, and one end of the sewing thread is fixed and then passes through the first sewing point A1, the first sewing point A2, and the first sewing point A3 respectively; S3, the leather pressing moving device moves and adjusts the leather in the XY axis direction, the second stitching point B1, the second stitching point B2, and the second stitching point B3 of the first sewing area are respectively moved to the lower side of the corresponding sewing needle, the sewing thread is respectively pulled from the first stitching point A1, the first stitching point A2, and the first stitching point A3 to the second stitching point B1, the second stitching point B2, and the second stitching point B3, under the action of the sewing machine head, the sewing thread passes through the second stitching point B1, the second stitching point B2, and the second stitching point B3, and the sewing needles are all raised; S4, the thread pulling knife head and the corresponding sewing thread cutting support plate cooperate to clamp and cut the corresponding sewing thread on the side close to the corresponding machine head, the first sliding frame moves in the direction away from the machine head, the sewing thread between the first stitching point A1 and the second stitching point B1, the first stitching point A2 and the second stitching point B2, the first stitching point A3 and the second stitching point B3 is pulled out, and the corresponding sewing thread head is fixed at the second stitching point B1, the second stitching point B2, and the second stitching point B3 respectively through the sewing machine head. At this time, the leather at the first stitching point A1, the first stitching point A2, and the first stitching point A3 is pulled to the second stitching point B1, the second stitching point B2, and the second stitching point B3 respectively, and the corresponding thread head is cut close to the leather end by the thread head cutting device, and the sewing of the pleated shape of the first sewing area is completed; S5, the rotating disk rotates 90 degrees counterclockwise, the pleating cutting device and the thread cutting device are adapted to the second sewing area, and steps S1, S2, S3 and S4 are repeated to sew the second sewing area, that is, the sewing of the pleated shape of the second sewing area is completed; S6, repeating step S1, allowing the leather to enter the next two sewing areas, and then repeating steps S2, S3, S4 and S5, the wrinkle shaping sewing of the entire leather fabric can be achieved.

8. The sewing process of the leather fabric wrinkle sewing equipment according to claim 7 is characterized in that: In step S4, during the process of pulling the sewing thread of the first sewing area, under the action of the tension spring, the lower end of the elastic pressure rod presses the leather of the first sewing area into the first avoidance groove to assist in the wrinkle forming of the first sewing area.

9. The sewing process of the leather fabric wrinkle sewing equipment according to claim 7, characterized in that: In step S5, during the process of pulling the sewing thread of the second sewing area, under the action of the tension spring, the lower end of the elastic pressure rod presses the leather of the second sewing area into the second avoidance groove to assist in the wrinkle forming of the second sewing area.

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