Underpants production line

Abstract

The invention discloses an underpants production line, and relates to the technical field of textile industry mechanical equipment, and the underpants production line comprises a cloth cutting module, a first sewing module, a second sewing module, a third sewing module, a folding module and a fourth sewing module; the cloth cutting module is used for cutting cloth to form a main body cloth piece and a wave bottom piece; the first sewing module is used for sewing the main body cloth piece and the wave bottom cloth piece to form integrated cloth, the integrated cloth is provided with two arc-shaped leg edges, two linear waist edges and four side edges, and each side edge is connected between the end of the adjacent arc-shaped leg edge and the end of the adjacent linear waist edge; the second sewing module is used for sewing first edges on two arc-shaped leg edges of the integrated cloth respectively; the third sewing module is used for sewing elastic bands on the two straight waist edges of the integrated cloth respectively; the folding module is used for folding the integrated cloth so that the four side edges correspond in pairs; and the fourth sewing module is used for correspondingly sewing the four side edges of the integrated cloth in pairs to form the underpants.

Description

Technical Field

[0001] This invention relates to the technical field of textile machinery and equipment, specifically to an underwear production line. Background Technology

[0002] Currently, with the improvement of people's living standards, the number of people wearing underwear is increasing. As underwear worn close to the skin, comfort is paramount. Currently, depending on the manufacturing process, underwear is divided into sewn underwear and seamless underwear. Sewn underwear requires sewing machines for stitching, but in actual production, this usually requires manual labor, resulting in low production efficiency and high production costs. Therefore, there is an urgent need to provide an underwear production line to reduce manual labor, improve production efficiency, and lower production costs. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides an underwear production line.

[0004] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0005] An underwear production line, comprising a main body fabric piece and a wave-shaped bottom fabric piece, characterized in that: the underwear production line includes a fabric cutting module, a first sewing module, a second sewing module, a third sewing module, a folding module, and a fourth sewing module; the fabric cutting module is used to cut the fabric into a main body fabric piece and a wave-shaped bottom fabric piece; the first sewing module is used to sew the main body fabric piece and the wave-shaped bottom fabric piece into a single piece of fabric, the single piece of fabric having two curved leg edges, two straight waist edges, and four side edges, each side edge connecting between the ends of adjacent curved leg edges and straight waist edges; the second sewing module is used to sew first edges onto the two curved leg edges of the single piece of fabric respectively; the third sewing module is used to sew elastic bands onto the two straight waist edges of the single piece of fabric respectively; the folding module is used to fold the single piece of fabric in half so that the four side edges correspond in pairs; the fourth sewing module is used to sew the four side edges of the single piece of fabric in pairs to form underwear.

[0006] Optionally, the first sewing module includes a first material picking device, a first transfer table, and a first sewing device; the second sewing module includes a second material picking device, a second transfer table, and a second sewing device; and the third sewing device includes a third material picking device, a third transfer table, and a third sewing device.

[0007] The first transfer platform is equipped with a positioning base plate; the first material picking device can take the main body fabric piece and the wave bottom fabric piece from the fabric cutting device and place them sequentially on the positioning base plate of the first transfer platform, and the first material picking device can pick up and place the positioning base plate and move it to the first sewing device to sew the wave bottom fabric piece onto the main body fabric piece to form an integral fabric; the first material picking device can place the integral fabric on the second transfer platform;

[0008] Both the second and third transfer platforms are equipped with clamps for placing the integral fabric. The shape of the clamps is adapted to the shape of the integral fabric, and the outer periphery of the integral fabric extends outward from the outer periphery of the clamps. Both the second and third material picking devices can pick up and place the clamps to realize the picking up and placing of the integral fabric. The second material picking device can pick up the clamps and the integral fabric at the same time from the second transfer platform and move them to the second sewing device to sew the first edge of the two curved leg edges of the integral fabric. It can also place the clamps and the integral fabric together on the third transfer platform.

[0009] The third material handling device can simultaneously take away the clamping plate and the integrated fabric from the third transfer station, and move them to the third sewing device to sew elastic bands on the two straight waist edges of the integrated fabric. It can also place the clamping plate and the integrated fabric together on the folding module.

[0010] Optionally, the folding module includes a folding device, and a clamping plate conveying line is provided between the folding device and the second transfer platform; the clamping plate conveying line conveys the clamping plate to the second transfer platform in the conveying direction of the folding device; along the conveying direction of the clamping plate conveying line, the second sewing device, the third transfer platform, and the first sewing device are sequentially arranged on the side of the clamping plate conveying line; the clamping plate conveying line includes a first bracket and a second bracket that can be lifted and lowered, the first bracket being able to lift the clamping plate at the folding device and lower it onto the conveying surface of the clamping plate conveying line, and the second bracket being located at the end of the clamping plate conveying line and being able to lift the clamping plate up to the second transfer platform.

[0011] Optionally, the folding module includes a folding device, which includes a folding frame, a bracket, a first clamping mechanism, and a second clamping mechanism. Two brackets are provided and symmetrically arranged on the folding frame. The brackets on both sides are movable so that the two brackets can move closer to or further away from each other. Each bracket is equipped with the first clamping mechanism and the second clamping mechanism, and the second clamping mechanism is rotatably mounted on the bracket and can rotate toward the first clamping mechanism. The two first clamping mechanisms are respectively used to clamp on both sides of the elastic band of the integral fabric along its length direction. The two second clamping mechanisms are respectively used to clamp on both sides of the other elastic band of the integral fabric along its length direction.

[0012] Optionally, the first clamping mechanism includes a first clamping member and a first movable clamping member. The first clamping member and the first movable clamping member can respectively clamp at both ends in the side length direction. The first movable clamping member can move closer to or away from the first clamping member so that the side edge of the integral fabric can be straightened.

[0013] The second clamping mechanism includes a second clamping member and a second movable clamping member, which can clamp at both ends along the length of the side edge; the second movable clamping member can move closer to or further away from the second clamping member so that the side edge of the integral fabric can be straightened.

[0014] Optionally, the first clamping member includes a first support rod and a first clamping rod, the first clamping rod being able to move closer to or further away from the first support rod; the first movable clamping member includes a first movable support rod and a first movable clamping rod, the first movable clamping rod being able to move closer to or further away from the first movable support rod; after the first movable clamping member moves away from the first clamping member, the first clamping member can abut against the elastic band, and the first movable clamping member can abut against the first edge;

[0015] The second clamping member includes a second support rod and a second clamping rod. The second clamping rod can move closer to or away from the second support rod. The second movable clamping member includes a second movable support rod and a second movable clamping rod. The second movable clamping rod can move closer to or away from the second movable support rod. After the second movable clamping member moves away from the second clamping member, the second clamping member can abut against the elastic band, and the first movable clamping member can abut against the first edge.

[0016] Optionally, a first pressing rod is rotatably provided on the bracket. The first pressing rod can press down on the integral fabric located between the first clamping member and the first movable clamping member, so that the elastic band of the integral fabric abuts against the side wall of the first support rod and the first clamping rod, and the first edge of the integral fabric abuts against the side wall of the first movable support rod and the first movable clamping rod.

[0017] The folding frame is rotatably provided with a second pressing rod, which can press down on the integral fabric located between the second clamping member and the second movable clamping member, so that the elastic band on the other side of the integral fabric abuts against the side wall of the second support rod and the second clamping rod, and so that the first edge on the other side of the integral fabric abuts against the side wall of the second movable support rod and the second movable clamping rod.

[0018] Optionally, the first clamping member further includes a first blade group for supporting a portion of the elastic band; the first movable clamping member further includes a first movable blade group for supporting a portion of the first edge; the second clamping member further includes a second blade group for supporting a portion of the elastic band on the other side; the second movable clamping member further includes a second movable blade group for supporting a portion of the first edge on the other side; a gap is provided between adjacent blades in each blade group.

[0019] Optionally, the fourth sewing module includes a fourth material-picking device and a fourth sewing device. The fourth material-picking device includes a material-picking gripper, which includes a main body support and an edge material support. The main body support is provided with a first needle, and the edge material support is provided with a second needle. The edge material support is arranged on both sides of the main body support. The first needles at different positions can pass through the gap between adjacent blades to pierce the overlapping elastic band and the overlapping first edge. The second needles at different positions can pass through the gap between adjacent blades to pierce the overlapping elastic band and the overlapping first edge. The first needles and the second needles are configured such that when both the first needles and the second needles pierce the folded integral fabric, a processing area is formed between the first needles and the second needles. The fourth sewing device can cut and sew the integral fabric in the processing area.

[0020] Optionally, the edge material support portion includes a first edge material rod and a second edge material rod. One end of the first edge material rod is rotatably configured, and the other end is a free end for arranging the second needle. One end of the second edge material rod is rotatably configured, and the other end is a free end for arranging the second needle. The second needle arranged on the first edge material rod is used to pierce the overlapping elastic band, and the second needle arranged on the second edge material rod is used to pierce the overlapping first edge. The first edge material rod and the second edge material rod are configured such that during the processing of the integral fabric in the processing area by the fourth sewing device, the first edge material rod and the second edge material rod can rotate sequentially and move away from the main support portion to make way for the fourth sewing device, and allow the cut edge material to stay on the second needle of the second edge material rod.

[0021] The technical solution provided by this invention has the following beneficial effects: by having each module correspond to a processing node in the production of underwear, manual operation is reduced and production efficiency is improved; and by setting up a folding device, the integrated fabric can be aligned and folded, and then the material can be picked up by needles on the material picking gripper, which can ensure that the underwear prototype does not shift, ensure the accuracy of subsequent sewing positions, and improve product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0023] Figure 2 This is a schematic diagram of the first material handling fixture and the positioning base plate in this embodiment;

[0024] Figure 3 This is a schematic diagram of the second material handling fixture and clamping plate in this embodiment;

[0025] Figure 4 This is a schematic diagram of the integral fabric, the first clamping mechanism, and the second clamping mechanism in this embodiment;

[0026] Figure 5 This is a schematic diagram of the clamp conveyor line and folding device in this embodiment;

[0027] Figure 6 This is a top view of the folding device in this embodiment;

[0028] Figure 7 This is a schematic diagram of the first clamping mechanism and the second clamping mechanism in this embodiment;

[0029] Figure 8 This is a schematic diagram of the material handling gripper in this embodiment;

[0030] Figure 9 This is a schematic diagram of the material handling gripper from another perspective in this embodiment;

[0031] Figure 10 This embodiment shows a schematic diagram of the fourth sewing device and the material handling gripper.

[0032] Explanation of reference numerals in the attached drawings: 1. Fabric cutting module; 11. Laser cutting equipment; 12. Conveyor belt; 2. First sewing module; 21. First material handling device; 211. First material handling fixture; 22. First transfer platform; 221. Positioning base plate; 23. First sewing device; 3. Second sewing module; 31. Second material handling device; 311. Second material handling fixture; 32. Second transfer platform; 321. Clamping plate; 33. Second sewing device; 4. Third sewing module; 41. Third material handling device; 42. 43. Third transfer platform; 54. Third sewing device; 55. Folding module; 56. Folding device; 57. Folding frame; 58. Support; 59. First clamping mechanism; 500. Second clamping mechanism; 501. First clamping member; 502. First moving clamping member; 503. Second moving clamping member; 504. First moving clamping member; 505. Second support rod; 506. Second clamping member 507. Second movable support rod; 508. Second movable clamping rod; 510. First pressing rod; 511. Second pressing rod; 512. First blade assembly; 513. First movable blade assembly; 514. Second blade assembly; 515. Second movable blade assembly; 6. Fourth sewing module; 61. Fourth material handling device; 62. Fourth sewing device; 63. Material handling gripper; 631. Main body support; 632. Edge material support; 6321. First edge material rod; 6322. Second edge material rod 633. First needle punch; 634. Second needle punch; 64. Auxiliary flattening mechanism; 641. Flattening frame; 642. Flattening frame; 643. Flattening blade assembly; 65. Unloading frame; 66. Main unloading gripper; 67. Edge unloading gripper; 7. Integrated fabric; 71. Main fabric piece; 72. Wave bottom fabric piece; 73. Arc-shaped leg edge; 74. Straight waist edge; 75. Side edge; 76. First edge edge; 77. Elastic band; 8. Clamping plate conveyor line; 81. First bracket; 82. Second bracket. Detailed Implementation

[0033] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0034] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0035] Reference Figure 1This embodiment provides an underwear production line, mainly used for producing disposable briefs. The underwear includes a main fabric piece 71 and a wave-shaped bottom fabric piece 72. The underwear production line includes a fabric cutting module 1, a first sewing module 2, a second sewing module 3, a third sewing module 4, a folding module 5, and a fourth sewing module 6. The fabric cutting module 1 is used to cut the fabric to form the main fabric piece 71 and the wave-shaped bottom fabric piece 72. The first sewing module 2 is used to sew the main fabric piece 71 and the wave-shaped bottom fabric piece 72 to form a one-piece fabric 7. The one-piece fabric 7 is laid flat and unfolds into a shape similar to a planar funnel. The one-piece fabric 7 has two curved leg edges 73, two straight waist edges 74, and four side edges 75. Each side edge 75 is connected between the end of the adjacent curved leg edge 73 and the end of the straight waist edge 74. The second sewing module 3 is used to sew a first edge 76 onto the two curved leg edges 73 of the one-piece fabric 7. The third sewing module 4 is used to sew elastic bands 77 onto the two straight waist edges 74 of the one-piece fabric 7. The folding module 5 is used to fold the one-piece fabric 7 in half so that the four side edges 75 align in pairs, thus forming the basic shape of underwear. The fourth sewing module 6 is used to sew the four side edges 75 of the one-piece fabric 7 together in pairs to form the underwear. By having each module correspond to a different processing node in the production of underwear, manual operations are reduced and production efficiency is improved.

[0036] Specifically, the fabric cutting module 1 uses a laser cutting device 11 and a conveyor belt 12 to transport the fabric roll through the conveyor belt 12. The laser cutting device 11 is arranged on the conveyor belt 12 to perform laser cutting on the fabric laid on the conveyor belt 12 to obtain the required main fabric piece 71 and wave bottom fabric piece 72.

[0037] The first sewing module 2 includes a first material picking device 21, a first transfer platform 22, and a first sewing device 23. The second sewing module 3 includes a second material picking device 31, a second transfer platform 32, and a second sewing device 33. The third sewing device 43 includes a third material picking device 41, a third transfer platform 42, and a third sewing device 43.

[0038] Reference Figure 1 and Figure 2A positioning base plate 221 is configured on the first transfer platform 22. The first material handling device 21 includes a first robotic arm and a first material handling fixture 211, with the drive end of the first robotic arm connected to the first material handling fixture 211. The first material handling fixture 211 uses a high-speed fan or a negative pressure generator to create a negative pressure zone, which can attract the cut main body fabric piece 71 and the wave bottom fabric piece 72, and can place the wave bottom fabric piece 72 and the main body fabric piece 71 on the positioning base plate 221 in sequence, so that the main body fabric piece 71 and the wave bottom fabric piece 72 overlap. A magnetic attraction structure can be set between the first material handling fixture 211 and the positioning base plate 221. For example, a movable permanent magnet can be set on the material handling fixture, and a corresponding material such as an iron sheet that can be attracted to the permanent magnet can be set on the positioning base plate 221. By moving the permanent magnet, the iron sheet is attracted, realizing the connection or separation of the first material handling fixture 211 and the positioning base plate 221; or an electromagnet can be set on the material handling fixture, and the magnetism of the electromagnet can be controlled by switching on and off the power. The main fabric piece 71 and the wave-bottom fabric piece 72 are held between the first material-picking fixture 211 and the positioning base plate 221. Furthermore, both the first material-picking fixture 211 and the positioning base plate 221 are equipped with sewing openings. The first robotic arm moves the first material-picking fixture 211 and the positioning base plate 221 to the first sewing device 23, sewing the wave-bottom fabric piece 72 onto the main fabric piece 71 to form a single piece of fabric 7. Subsequently, the first robotic arm returns the positioning base plate 221 to the first transfer platform 22, and then places the single piece of fabric 7 onto the second transfer platform 32.

[0039] Reference Figure 1 and Figure 3 Both the second transfer platform 32 and the third transfer platform 42 are equipped with clamping plates 321 for placing the integral fabric 7. The shape of the clamping plates 321 is adapted to the shape of the integral fabric 7, and the outer periphery of the integral fabric 7 extends outward from the outer periphery of the clamping plates 321 to facilitate subsequent sewing work. The second material picking device 31 includes a second robotic arm and a second material picking fixture 311, which is adapted to the clamping plate 321. Similarly, the third material picking device 41 also includes a third robotic arm and a third material picking fixture, with the same structure as the second material picking device 31. A magnetic attraction structure is provided between the second material picking fixture 311 and the clamping plate 321, which can be the magnetic attraction structure between the first material picking fixture 211 and the positioning base plate 221.

[0040] Specifically, the second transfer platform 32 can position and lift the clamping plate 321, so that the first material picking device 21 can place the integral fabric 7 on the clamping plate 321, and at the same time, the second material picking device 31 can remove the integral fabric 7 and the clamping plate 321 simultaneously. After the second material picking device 31 removes the integral fabric 7 and the clamping plate 321 simultaneously, it moves to the second sewing device 33 to sew the first edge 76 on the two curved leg edges 73 of the integral fabric 7 in sequence. After the sewing is completed, the second material picking device 31 places the integral fabric 7 and the clamping plate 321 on the third transfer platform 42. The third material picking device 41 removes the integral fabric 7 and the clamping plate 321 from the third transfer platform 42, moves to the third sewing device 43 to sew elastic bands 77 on the two straight waist edges 74 of the integral fabric 7 in sequence. After the sewing is completed, the third material picking device 41 transfers the integral fabric 7 and the clamping plate 321 to the folding module 5.

[0041] Specifically, refer to Figure 5 The folding module 5 includes a folding device 51, and a clamping plate conveying line 8 is provided between the folding device 51 and the second transfer platform 32. The clamping plate conveying line 8 conveys the clamping plate 321 from the side where the folding device 51 is located to the side where the second transfer platform 32 is located. Along the conveying direction of the clamping plate conveying line 8, the third sewing device 43, the third transfer platform 42, and the second sewing device 33 are sequentially arranged on one side of the clamping plate conveying line 8. In other embodiments, another set of third sewing devices 43, third transfer platforms 42, and second sewing devices 33 can also be symmetrically arranged on the other side of the clamping plate conveying line 8.

[0042] The clamping plate conveyor line 8 includes a conveyor frame, a first bracket 81, a second bracket 82, and a conveying mechanism. A folding device 51 is positioned above one end of the conveyor frame, and a second transfer platform 32 is positioned above the other end of the conveyor frame. The first bracket 81 is vertically detachable below the folding device 51, capable of lifting the clamping plate 321 and lowering it onto the conveying surface of the clamping plate conveyor line 8. The second bracket 82 is vertically detachable below the second transfer platform 32, capable of lifting the clamping plate 321 and raising it onto the second transfer platform 32. The conveying mechanism uses a motor-driven chain for transport. Protrusions can be spaced along the chain, protruding from the conveying surface. These protrusions push the clamping plate 321 during movement. The conveying mechanism is existing technology and will not be described in detail. When the third material handling device 41 transfers the integral fabric 7 and the clamping plate 321 to the folding module 5, the first bracket 81 rises to lift the clamping plate 321. After the folding module 5 picks up the integral fabric 7, the first bracket 81 descends, causing the clamping plate 321 to fall onto the conveying surface of the clamping plate conveying line 8 and be conveyed to the second bracket 82. The second bracket 82 rises to lift the clamping plate 321 to the second transfer platform 32.

[0043] Reference Figure 6 and Figure 7 The folding device 51 includes a folding frame 52, a bracket 53, a first clamping mechanism 54, and a second clamping mechanism 55. The folding frame 52 is arranged above the frame of the clamping plate conveyor line 8. The brackets 53 are symmetrically arranged on both sides of the folding frame 52, and the brackets 53 can move along a conveying direction perpendicular to the clamping plate conveyor line 8, so that the brackets 53 on both sides move closer or further apart. The brackets 53 can be driven by corresponding cylinders, and the cylinder bodies are mounted on the folding frame 52. Each bracket 53 is equipped with a first clamping mechanism 54 and a second clamping mechanism 55, and the second clamping mechanism 55 is rotatably mounted on the bracket 53 and can rotate toward the first clamping mechanism 54. The two first clamping mechanisms 54 are used to clamp on both sides of the elastic band 77 of the integral fabric 7 along its length; the two second clamping mechanisms 55 are used to clamp on both sides of the other elastic band 77 of the integral fabric 7 along its length. When the second clamping mechanisms 55 on both sides simultaneously rotate toward the first clamping mechanism 54, the integral fabric 7 can be folded.

[0044] Furthermore, the first clamping mechanism 54 includes a first clamping member 56 and a first movable clamping member 57. The first clamping member 56 and the first movable clamping member 57 can respectively clamp at both ends of the side edge 75 along its length. The first movable clamping member 57 can move closer to or further away from the first clamping member 56 so that the side edge 75 of the integral fabric 7 can be straightened.

[0045] The second clamping mechanism 55 includes a second clamping member 58 and a second movable clamping member 59, which can clamp at both ends along the length of the side edge 75. The second movable clamping member 59 can move closer to or further away from the second clamping member 58 to straighten the side edge 75 of the integral fabric 7. Through the arrangement of the first clamping mechanism 54 and the second clamping mechanism 55, the integral fabric 7 can be flattened for easy folding. (Draw a planar sketch of underwear)

[0046] Furthermore, the first clamping member 56 includes a first support rod 501 and a first clamping rod 502. The first clamping rod 502 can move closer to or away from the first support rod 501. In this embodiment, the first clamping rod 502 is driven to move closer to or away from the first support rod 501 by a cylinder. Specifically, the cylinder body is fixed to the bracket 53, the piston rod end of the cylinder is fixedly connected to the first clamping rod 502, and the first support rod 501 is fixed to the cylinder body. The first support rod 501 and the first clamping rod 502 are arranged parallel to each other, and the first clamping rod 502 is located above the first support rod 501. Both extend towards the bracket 53 on the other side.

[0047] The first movable clamping member 57 includes a first movable support rod 503 and a first movable clamping rod 504. The first movable clamping rod 504 can move closer to or away from the first movable support rod 503; similarly, the first movable clamping rod 504 is driven by a cylinder to move closer to or away from the first movable support rod 503. The first movable support rod 503 and the first movable clamping rod 504 are arranged parallel to each other, and the first movable clamping rod 504 is located above the first movable support rod 503. Both extend towards the bracket 53 on the other side. Thus, after the first movable clamping member 57 moves away from the first clamping member 56, the first clamping member 56 can abut against the elastic band 77, and the first movable clamping member 57 can abut against the first edge 76.

[0048] The second clamping member 58 includes a second support rod 505 and a second clamping rod 506. The second clamping rod 506 can move closer to or further away from the second support rod 505, and it is also driven by a cylinder. The second movable clamping member 59 includes a second movable support rod 507 and a second movable clamping rod 508. The second movable clamping rod 508 can move closer to or further away from the second movable support rod 507. It is also driven by a cylinder. After the second movable clamping member 59 moves away from the second clamping member 58, the second clamping member 58 can abut against the elastic band 77, and the second movable clamping member 59 can abut against the first edge 76.

[0049] Since both the elastic band 77 and the first edge 76 are thicker than the integral fabric 7, after the first clamping member 56 and the first movable clamping member 57 move away from each other, the first clamping member 56 and the first movable clamping member 57 can respectively abut against the elastic band 77 and the first edge 76. Furthermore, in order to allow the first support rod 501 and the first clamping rod 502 to abut against the elastic band 77 more closely on their sidewalls, a first pressing rod 510 is rotatably mounted on the bracket 53. The first pressing rod 510 can be driven by a rotary cylinder. The first pressing rod 510 can press down on the integral fabric 7 located between the first clamping member 56 and the first movable clamping member 57. The fabric is pressed down by the first pressing rod 510. The side wall of the first clamping rod 502 on one side of the pressing position can abut against the elastic band 77 over a large area, and the side wall of the first moving clamping rod 504 on the other side of the pressing position can also abut against the first edge 76 over a large area.

[0050] Similarly, after the second clamping member 58 and the second movable clamping member 59 move away from each other, the second clamping member 58 and the second movable clamping member 59 respectively abut against the elastic band 77 and the first edge 76 on the other side of the integral fabric 7. In order to allow the side wall of the second support rod 505 and the second clamping rod 506 near the elastic band 77 to abut against the elastic band 77 more, a second pressing rod 511 is rotatably provided on the folding frame 52. The second pressing rod 511 can be driven by a rotary cylinder. The second pressing rod 511 can press down on the integral fabric 7 located between the second clamping member 58 and the second movable clamping member 59. By pressing down the fabric with the second pressing rod 511, the side wall of the second clamping rod 506 on the pressing position can abut against the elastic band 77 over a large area, and the side wall of the second movable clamping rod 508 on the other side of the pressing position can also abut against the first edge 76 over a large area. Thus, by setting the first pressing rod 510 and the second pressing rod 511, it can be ensured that the elastic bands 77 on both sides can be aligned and the two ends of the first edge 76 can be aligned after folding.

[0051] Furthermore, the first clamping member 56 also includes a first blade assembly 512, which is arranged on the side of the first support rod 501 away from the first movable clamping member 57, and is used to support a portion of the elastic band 77. The first movable clamping member 57 also includes a first movable blade assembly 513, which is arranged on the side of the first movable support rod 503 away from the first clamping member 56, and is used to support a portion of the first edge 76. The second clamping member 58 also includes a second blade assembly 514, which is arranged on the side of the second support rod 505 away from the second movable clamping member 59, and is used to support a portion of the elastic band 77 on the other side. The second movable clamping member 59 also includes a second movable blade assembly 515, which is arranged on the side of the second movable support rod 507 away from the second clamping member 58, and is used to support a portion of the first edge 76 on the other side. A gap is provided between adjacent blades in each blade assembly.

[0052] The first movable blade assembly 513 is rotatably configured, with its rotation axis parallel to the first movable support rod 503. This rotatability allows the first movable blade assembly 513 to make way for the clamping plate 321 when the first bracket 81 lowers it. Furthermore, when the first movable blade assembly 513 rotates toward the first movable support rod 503, the first blade assembly 512 can rotate upwards and be supported on a portion of the first edge 76 and the lower end face of a portion of the integral fabric 7.

[0053] When the second clamping mechanism 55 flips toward the first clamping mechanism 54, the second blade group 514 corresponds to the first blade group 512, and the elastic bands 77 supported by the two can overlap; the second movable blade group 515 corresponds to the first movable blade group 513, and the first edges 76 supported by the two can overlap, and the integral fabric 7 is folded to form the underwear prototype.

[0054] Reference Figure 1 , 8 9. The fourth sewing module 6 includes a fourth material-picking device 61 and a fourth sewing device 62. The fourth material-picking device 61 includes a fourth robotic arm and a material-picking gripper 63. The fourth robotic arm is driven and connected to the material-picking gripper 63. The material-picking gripper 63 includes a gripper frame, a main body support 631, and an edge material support 632. Both the main body support 631 and the edge material support 632 are arranged on the gripper frame. The main body support 631 is provided with a first needle 633, and the edge material support 632 is provided with a second needle 634. The edge material support 632 has two sets distributed on both sides of the main body support 631. The gripper frame is roughly L-shaped. The main body support 631 and the edge material support 632 are both arranged on the horizontal part of the gripper frame so that the gripper frame can drive the main body support 631 and the edge material support 632 to pierce the underwear prototype from bottom to top. The first needle 633 at different positions can correspondingly pass through the gap between adjacent blades to pierce the overlapping elastic band 77 and the overlapping first edge 76. The second needle 634 at different positions can correspondingly pierce the overlapping elastic band 77 and the overlapping first edge 76. The first needle 633 and the second needle 634 are configured such that when both the first needle 633 and the second needle 634 pierce the folded integral fabric 7, a processing area is formed between the first needle 633 and the second needle 634, that is, processing areas are formed on both sides of the underwear prototype. The fourth sewing device 62 can cut and sew the integral fabric 7 within the processing area.

[0055] The main support portion 631 includes two parallel, spaced-apart support rods, with first needles 633 arranged at both ends of the support rods. The edge material support portion 632 includes a first edge material rod 6321 and a second edge material rod 6322. One end of the first edge material rod 6321 is rotatably mounted, while the other end is a free end used to arrange the second needles 634. One end of the second edge material rod 6322 is rotatably mounted, while the other end is a free end used to arrange the second needles 634. The second needles 634 arranged on the first edge material rod 6321 are used to pierce the overlapping elastic band 77, and the second needles 634 arranged on the second edge material rod 6322 are used to pierce the overlapping first edge 76. The first edge bar 6321 and the second edge bar 6322 are configured such that, during the processing of the integral fabric 7 in the processing area by the fourth sewing device 62, the first edge bar 6321 and the second edge bar 6322 can rotate sequentially and move away from the main support plate to make way for the fourth sewing device 62, and allow the cut edge material to stay on the second needle 634 of the second edge bar 6322.

[0056] The gripper frame is equipped with a cylinder, a rotating shaft, and a connecting rod. One end of the cylinder is hinged to the gripper frame, and the other end is hinged to the connecting rod. The other end of the connecting rod is fixedly connected to the rotating shaft, which is rotatably mounted on the gripper frame. One end of the first side material rod 6321 is fixed to the rotating shaft. The cylinder drives the first side material rod 6321 to rotate. The second side material rod 6322 is driven in the same way as the first side material rod 6321.

[0057] Reference Figure 10 The fourth sewing device 62 also includes an auxiliary flattening mechanism 64, which includes a flattening frame 641, a flattening box 642, and a flattening blade assembly 643. The flattening box 642 is vertically mounted on the flattening frame 641 and can be driven by a cylinder to achieve a lifting function. The flattening blade assembly 643 is fixedly installed inside the flattening box 642. Adjacent blades of the flattening blade assembly 643 also have gaps for needle penetration. When the material handling gripper 63 moves below the flattening box 642, the flattening box 642 descends, and the first needle 633 and the second needle 634 pass through the flattening blade assembly 643. The flattening blade assembly 643 can flatten the fabric near the processing area onto the corresponding main support 631 and edge support 632 to facilitate subsequent sewing. After flattening is completed, the flattening frame 642 rises.

[0058] The fourth sewing device 62 also includes a material unloading frame 65, a main material unloading gripper 66, and an edge material unloading gripper 67. Both the main material unloading gripper 66 and the edge material unloading gripper 67 are arranged within the material unloading frame 65. The material-retrieving gripper 63 moves the sewn underwear and the cut edge material into the material unloading frame 65. The main material unloading gripper 66 and the edge material unloading gripper 67 can respectively grasp the underwear and the edge material, and then the material-retrieving gripper 63 exits the material unloading frame 65. Corresponding collection frames can be provided. After the main material unloading gripper 66 and the edge material unloading gripper 67 are released, the underwear and the edge material fall into their respective collection frames. The main material unloading gripper 66 includes two first pneumatic grippers symmetrically arranged to grip both sides of the underwear; the edge material gripper includes two second pneumatic grippers, also symmetrically arranged to grip the edge material on both sides.

[0059] The entire production process is as follows:

[0060] The fabric cutting module 1 cuts the fabric roll to form the main fabric piece 71 and the wave bottom fabric piece 72;

[0061] After the first material picking device 21 picks up the main fabric piece 71 and the wave bottom fabric piece 72, it places them sequentially on the positioning base plate 221 of the first transfer platform 22. The wave bottom fabric piece 72 is located below the main fabric piece 71. The first material picking device 21 transfers the positioning base plate 221, the main fabric piece 71, and the wave bottom fabric piece 72 together to the first sewing device 23 for sewing. The main fabric piece 71 and the wave bottom fabric piece 72 are sewn together to form an integral fabric 7. Then, the first material picking device 21 puts the positioning base plate 221 back into the first transfer platform 22 and then puts the integral fabric 7 onto the clamping plate 321 of the second transfer platform 32.

[0062] The second material handling device 31 takes away the clamping plate 321 and the integral fabric 7 from the second transfer platform 32 and transfers them to the second sewing device 33. At the same time, the second bracket 82 of the clamping plate conveyor line 8 lifts another clamping plate 321 up to the second transfer platform 32. The second sewing device 33 sews the first edge 76 of the two arc-shaped leg edges 73 of the integral fabric 7 in sequence. After the sewing is completed, the second material handling device 31 places the clamping plate 321 and the integral fabric 7 onto the third transfer platform 42.

[0063] The third material taking device 41 takes away the clamping plate 321 and the integral fabric 7 from the third transfer platform 42 and transfers them to the third sewing device 43. The third sewing device 43 sews the elastic band 77 on the two straight waist edges 74 of the integral fabric 7 in sequence. After the sewing is completed, the third material taking device 41 puts the clamping plate 321 and the integral fabric 7 onto the folding device 51.

[0064] The first bracket 81 located below the folding frame 52 rises up, lifts the clamping plate 321, and then lowers to place the clamping plate 321 on the conveying surface of the clamping plate conveying line 8 for conveying towards the second transfer station 32.

[0065] The two supports 53 of the folding device 51 approach each other, and the first clamping mechanism 54 and the second clamping mechanism 55 on the two supports 53 clamp the four corners of the integral fabric 7 respectively; after the clamping plate 321 is lowered, the first movable clamping member 57 moves away from the first clamping member 56, and the second movable clamping member 59 moves away from the second clamping member 58. At the same time, the second movable blade assembly 515 rotates, so that the second movable blade assembly 515 can abut against part of the integral fabric 7 and the lower end face of the first edge 76; the second pressing rod 511 presses down on the integral fabric 7 located between the second clamping member 58 and the second movable clamping member 59, so that the second support rod 50 The sidewalls of the second clamping rod 506 and the second moving support rod 507 and the second moving clamping rod 508 can abut against the first edge 76; then the second clamping mechanism 55 rotates towards the first clamping mechanism 54 at a certain angle, so that the middle part of the integral fabric 7 becomes loose. At this time, the first pressing rod 510 presses down on the integral fabric 7 located between the first clamping member 56 and the first moving clamping member 57, so that the sidewalls of the first support rod 501 and the first clamping rod 502 can abut against the elastic band 77, and the sidewalls of the first moving support rod 503 and the second moving clamping rod 508 can abut against the first edge 76. The second clamping mechanism 55 continues to rotate toward the first clamping mechanism 54, so that some of the elastic bands 77 on both sides of the integral fabric 7 overlap between the first blade group 512 and the second blade group 514, and the two ends of the first edge 76 overlap between the first moving blade group 513 and the second moving blade group 515, and the integral fabric 7 is folded to form the underwear prototype.

[0066] The fourth material handling device 61 moves to the folding device 51. The main body support part 631 and the edge material support part 632 of the material handling gripper 63 move to below the underwear prototype and then rise. The first needle 633 and the second needle 634 pass through each blade group to position and puncture the underwear prototype. Then the first clamping mechanism 54 and the second clamping mechanism 55 release the clamping of the underwear prototype, and the two side supports 53 move away from each other. Each blade group separates directly from the needle using the gap. The material handling gripper 63 moves to the auxiliary flattening mechanism 64, and the flattening frame 642 descends, flattening the fabric near the processing area on one side onto the corresponding main support 631 and edge support 632. Then, it moves to the fourth sewing mechanism for sewing and cutting. During this process, the first edge bar 6321 and the second edge bar 6322 can rotate sequentially and move away from the main support 631 to make way for the fourth sewing mechanism, allowing the cut edge material to rest on the second needle 634 of the second edge bar. After the underwear prototype completes sewing and cutting on one side, the material handling gripper 63 rotates 180°, moving the other side to the auxiliary flattening mechanism 64 for flattening, and then to the fourth sewing mechanism for sewing and cutting. Finally, the material-picking gripper 63 moves the sewn underwear and two edge pieces into the unloading frame 65. The two main unloading grippers 66 hold the sides of the underwear, and the two edge unloading grippers 67 hold the two edge pieces respectively. After the material-picking gripper 63 descends, the underwear and edge pieces are separated from the needle and pin, and the material-picking gripper 63 exits the unloading frame 65. The main unloading grippers 66 release the underwear, and the underwear falls into the corresponding collection box. After the edge unloading grippers 67 release the edge pieces, the edge pieces fall into the corresponding collection box.

[0067] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. An underwear production line, the underwear comprising a main body fabric piece and a bottom fabric piece, characterized in that: The underwear production line includes a fabric cutting module, a first sewing module, a second sewing module, a third sewing module, a folding module, and a fourth sewing module. The fabric cutting module cuts the fabric to form a main body piece and a wave-shaped bottom piece. The first sewing module sews the main body piece and the wave-shaped bottom piece together to form a single piece of fabric. The single piece of fabric has two curved leg edges, two straight waist edges, and four side edges, each side edge connecting to the end of an adjacent curved leg edge and the end of a straight waist edge. The second sewing module sews first edges onto the two curved leg edges of the single piece of fabric. The third sewing module sews elastic bands onto the two straight waist edges of the single piece of fabric. The folding module folds the single piece of fabric in half so that the four side edges correspond in pairs. The fourth sewing module sews the four side edges of the single piece of fabric together in pairs to form underwear.

2. The underwear production line according to claim 1, characterized in that: The first sewing module includes a first material picking device, a first transfer platform, and a first sewing device; the second sewing module includes a second material picking device, a second transfer platform, and a second sewing device; the third sewing device includes a third material picking device, a third transfer platform, and a third sewing device. The first transfer platform is provided with a positioning base plate; the first material picking device can take the main body fabric piece and the wave bottom fabric piece from the fabric cutting device and place them in sequence on the positioning base plate of the first transfer platform, and the first material picking device can pick up and put the positioning base plate and move it to the first sewing device to sew the wave bottom fabric piece onto the main body fabric piece to form an integral fabric. The first material handling device can place the integral fabric on the second transfer platform; Both the second and third transfer platforms are equipped with clamps for placing the integral fabric. The shape of the clamps is adapted to the shape of the integral fabric, and the outer periphery of the integral fabric extends outward from the outer periphery of the clamps. Both the second and third material picking devices can pick up and place the clamps to realize the picking up and placing of the integral fabric. The second material picking device can pick up the clamps and the integral fabric at the same time from the second transfer platform and move them to the second sewing device to sew the first edge of the two curved leg edges of the integral fabric. It can also place the clamps and the integral fabric together on the third transfer platform. The third material handling device can simultaneously take away the clamping plate and the integrated fabric from the third transfer station, and move them to the third sewing device to sew elastic bands on the two straight waist edges of the integrated fabric. It can also place the clamping plate and the integrated fabric together on the folding module.

3. The underwear production line according to claim 2, characterized in that: The folding module includes a folding device, and a clamping plate conveying line is provided between the folding device and the second transfer platform. The clamping plate conveying line conveys the clamping plates from the folding device to the second transfer platform. Along the conveying direction of the clamping plate conveying line, the second sewing device, the third transfer platform, and the first sewing device are arranged sequentially on the side of the clamping plate conveying line. The clamping plate conveying line includes a first bracket and a second bracket that can be raised and lowered. The first bracket can lift the clamping plate at the folding device and lower it onto the conveying surface of the clamping plate conveying line. The second bracket is located at the end of the clamping plate conveying line and can lift the clamping plate up to the second transfer platform.

4. The underwear production line according to claim 1, characterized in that: The folding module includes a folding device, which includes a folding frame, a bracket, a first clamping mechanism, and a second clamping mechanism. Two brackets are provided and symmetrically arranged on the folding frame. The brackets on both sides are movable so that the two brackets can move closer to or further away from each other. Each bracket is equipped with the first clamping mechanism and the second clamping mechanism, and the second clamping mechanism is rotatably mounted on the bracket and can rotate toward the first clamping mechanism. The two first clamping mechanisms are respectively used to clamp on both sides of the elastic band of the integral fabric along its length direction. The two second clamping mechanisms are respectively used to clamp on both sides of the other elastic band of the integral fabric along its length direction.

5. The underwear production line according to claim 4, characterized in that: The first clamping mechanism includes a first clamping member and a first movable clamping member. The first clamping member and the first movable clamping member can respectively clamp at both ends in the side length direction. The first movable clamping member can move closer to or further away from the first clamping member so that the side edge of the integral fabric can be straightened. The second clamping mechanism includes a second clamping member and a second movable clamping member, which can clamp at both ends along the length of the side edge; the second movable clamping member can move closer to or further away from the second clamping member so that the side edge of the integral fabric can be straightened.

6. The underwear production line according to claim 5, characterized in that: The first clamping member includes a first support rod and a first clamping rod. The first clamping rod can move closer to or further away from the first support rod. The first movable clamping member includes a first movable support rod and a first movable clamping rod. The first movable clamping rod can move closer to or further away from the first movable support rod. After the first movable clamping member moves away from the first clamping member, the first clamping member can abut against the elastic band, and the first movable clamping member can abut against the first edge. The second clamping member includes a second support rod and a second clamping rod. The second clamping rod can move closer to or away from the second support rod. The second movable clamping member includes a second movable support rod and a second movable clamping rod. The second movable clamping rod can move closer to or away from the second movable support rod. After the second movable clamping member moves away from the second clamping member, the second clamping member can abut against the elastic band, and the first movable clamping member can abut against the first edge.

7. The underwear production line according to claim 6, characterized in that: The bracket is rotatably provided with a first pressing rod, which can press down on the integral fabric located between the first clamping member and the first movable clamping member, so that the elastic band of the integral fabric abuts against the side wall of the first support rod and the first clamping rod, and the first edge of the integral fabric abuts against the side wall of the first movable support rod and the first movable clamping rod. The folding frame is rotatably provided with a second pressing rod, which can press down on the integral fabric located between the second clamping member and the second movable clamping member, so that the elastic band on the other side of the integral fabric abuts against the side wall of the second support rod and the second clamping rod, and so that the first edge on the other side of the integral fabric abuts against the side wall of the second movable support rod and the second movable clamping rod.

8. The underwear production line according to claim 7, characterized in that: The first clamping member further includes a first blade group for supporting a portion of the elastic band; the first movable clamping member further includes a first movable blade group for supporting a portion of the first edge; the second clamping member further includes a second blade group for supporting a portion of the elastic band on the other side; the second movable clamping member further includes a second movable blade group for supporting a portion of the first edge on the other side; a gap is provided between adjacent blades in each blade group.

9. The underwear production line according to claim 8, characterized in that: The fourth sewing module includes a fourth material-picking device and a fourth sewing device. The fourth material-picking device includes a material-picking gripper, which includes a main body support and an edge material support. The main body support is provided with a first needle, and the edge material support is provided with a second needle. The edge material support is arranged on both sides of the main body support. The first needles at different positions can pass through the gap between adjacent blades to pierce the overlapping elastic band and the overlapping first edge. The second needles at different positions can pass through the gap between adjacent blades to pierce the overlapping elastic band and the overlapping first edge. The first needles and the second needles are configured such that when both the first needles and the second needles pierce the folded integral fabric, a processing area is formed between the first needles and the second needles. The fourth sewing device can cut and sew the integral fabric in the processing area.

10. The underwear production line according to claim 9, characterized in that: The edge material support includes a first edge material rod and a second edge material rod. One end of the first edge material rod is rotatably arranged, and the other end is a free end for arranging a second needle. One end of the second edge material rod is rotatably arranged, and the other end is a free end for arranging a second needle. The second needle arranged on the first edge material rod is used to pierce the overlapping elastic band, and the second needle arranged on the second edge material rod is used to pierce the overlapping first edge. The first edge material rod and the second edge material rod are configured such that during the processing of the integral fabric in the processing area by the fourth sewing device, the first edge material rod and the second edge material rod can rotate sequentially and move away from the main support to make way for the fourth sewing device, and so that the cut edge material can stay on the second needle of the second edge material rod.

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