A waistband folding device

Abstract

This invention provides a waistband folding device, including an upper folding mechanism and a lower folding mechanism. The upper folding mechanism includes an upper folding unit, which includes a vertically movable floating mounting plate. An upper snap-on push plate assembly, an upper straight-side push plate assembly, an upper cavity assembly, an upper fixing push plate assembly, and an upper cavity baffle assembly are mounted on the floating mounting plate. The lower folding mechanism includes a lower folding unit located below the upper folding unit. The lower folding unit includes a lower cavity plate, a lower side push plate assembly, a lower snap-on push plate assembly, a lower straight-side push plate assembly, and a lower cavity baffle assembly. This invention solves the problem of unstable fabric posture during waistband folding in existing technologies by using needle-punching to fix the upper fabric piece in the upper cavity and negative pressure adsorption to fix the lower fabric piece in the lower cavity. Furthermore, it enables automatic folding and interlocking of the waistband through different action sequences of the various components.

Description

Technical Field

[0001] This invention relates to the field of fabric folding technology, and more particularly to a waistband folding device. Background Technology

[0002] The process of sewing the waistband of jeans involves folding and interlocking the two layers of fabric before sewing. Currently, this folding and interlocking process is mostly done by hand. This folding and interlocking technique requires a high level of skill from the workers and is time-consuming, significantly impacting the overall production efficiency. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a waistband folding device to help complete the folding and interlocking process of the waistband.

[0004] This invention provides a waistband folding device for folding the upper and lower fabric pieces of a waistband, comprising an upper folding mechanism and a lower folding mechanism. The upper folding mechanism includes an upper folding unit, which includes a vertically movable floating mounting plate. The floating mounting plate is equipped with an upper edge pusher assembly, an upper straight edge pusher assembly, an upper cavity assembly, an upper fixed pusher assembly, and an upper cavity baffle assembly. The upper cavity assembly includes an upper cavity plate mounted below the floating mounting plate, a needle-punching drive source connected to the floating mounting plate, and a needle-punching block that moves vertically under the drive of the needle-punching drive source. The bottom of the upper cavity plate has an upper cavity for accommodating the upper fabric piece. The lower end of the needle-punching block has a fixed needle that passes through the upper cavity plate. When the needle-punching drive source drives the needle-punching block to move downwards, the fixed needle enters the upper cavity plate. Inside the cavity, the upper fabric piece is needle-punched and fixed; the upper cavity baffle assembly and the upper snap-edge pusher assembly are used to fold the snap-edge of the upper fabric piece, and the upper straight edge pusher assembly and the upper fixing pusher assembly are used to fold the non-snap-edge of the upper fabric piece; the lower folding mechanism includes a lower folding unit, which is located below the upper folding unit. It includes a lower cavity plate, a lower side pusher assembly, a lower snap-edge pusher assembly, and a lower cavity baffle assembly. The top of the lower cavity plate is provided with a lower cavity for accommodating the lower fabric piece. The lower cavity is arranged vertically opposite to the upper cavity and is connected to a negative pressure mechanism for negative pressure adsorption and fixing of the lower fabric piece; the lower cavity baffle assembly and the lower side pusher assembly are used to fold the non-snap-edge of the lower fabric piece, the lower snap-edge pusher assembly is used to fold the snap-edge of the lower fabric piece, and the lower straight edge pusher assembly is used to limit the position of the lower fabric piece.

[0005] Preferably, the upper folding mechanism includes two upper folding units, and the lower folding mechanism includes two lower folding units, with the two upper folding units and the two lower folding units arranged in a one-to-one correspondence.

[0006] Preferably, the upper folding mechanism further includes a first lifting drive source, which is used to drive the upper folding unit to move up and down.

[0007] Preferably, the upper folding unit includes a second lifting drive source, and the floating mounting plate moves up and down under the drive of the second lifting drive source.

[0008] Preferably, the upper folding unit further includes a lifting floating plate connected to the second lifting drive source, and a third lifting drive source mounted on the floating mounting plate, wherein the third lifting drive source is connected to the lifting floating plate.

[0009] Preferably, the top of the upper cavity plate is provided with a needle guide block, the needle guide block has an inclined surface, the needle block is slidably disposed on the inclined surface, and the fixed needle has an included angle with the lower surface of the upper cavity plate; the needle drive source is connected to a needle pressing block, and the needle pressing block abuts against the needle block (432).

[0010] Preferably, the upper cavity assembly further includes a lifting drive source connected to the floating mounting plate. The upper cavity plate has a through hole communicating with the upper cavity. The output end of the lifting drive source can pass through the through hole to press the upper fabric piece against the lower fabric piece.

[0011] Preferably, the upper edge push plate assembly includes an upper edge push plate drive source and an upper edge lifting drive source, which are respectively connected to the floating mounting plate. The upper edge push plate drive source is connected to the upper edge push plate. The upper edge lifting drive source is sequentially connected to an upper edge guide drive source, an upper edge tongue plate drive source, and an upper edge tongue plate.

[0012] Preferably, both the upper cavity baffle assembly and the lower cavity baffle assembly include a baffle block driving source and a baffle block that moves up and down under the drive of the baffle block driving source. The baffle block can pass through the upper cavity plate or the lower cavity plate and enter the upper cavity or the lower cavity.

[0013] Preferably, the lower side push plate assembly includes a lower side lifting drive source, and a lower side tongue plate drive source and a lower side push plate drive source that move up and down synchronously under the drive of the lower side lifting drive source. The lower side tongue plate drive source is connected to the lower side tongue plate, and the lower side push plate drive source is connected to the lower side push plate.

[0014] Preferably, the lower edge push plate assembly includes a lower edge lifting drive source, a lower edge guide drive source, a lower edge push plate drive source, and a lower edge push plate, which are sequentially connected to the lower edge lifting drive source.

[0015] Preferably, the lower folding unit further includes a lower straight edge push plate assembly, which is disposed on the side of the lower cavity plate away from the lower snap-on edge push plate assembly.

[0016] Preferably, the upper straight-edge push plate assembly, the upper fixed push plate assembly, and the lower straight-edge push plate assembly all include a push plate driving source, and a push plate is connected to the push plate driving source.

[0017] Preferably, the waistband folding device further includes a pressing cavity moving mechanism, which includes a core translation drive source, a pressing moving base plate connected to the core translation drive source, a folding core unit disposed on the pressing moving base plate, and a pressing unit connected to the pressing moving base plate. The core translation drive source is used to drive the pressing moving base plate to move closer to or away from the lower cavity plate. The folding core unit includes a folding core mounted on the pressing moving base plate, and the folding core is provided with a plurality of air suction holes. The pressing unit is disposed above the folding core unit and includes a movable pressing plate that can move closer to or away from the folding core.

[0018] Preferably, there are two folding core units and two pressing units, including a lower left folding core unit and a lower right folding core unit disposed on the pressing moving base plate, a left pressing unit disposed above the lower left folding core unit, and a right pressing unit disposed above the lower right folding core unit; the lower left folding core unit further includes a pressing translation drive source disposed on the pressing moving base plate, and a pressing telescopic base plate slidably disposed on the pressing moving base plate, the folding cores of the left pressing unit and the lower left folding core unit are both disposed on the pressing telescopic base plate, and the pressing telescopic base plate moves closer to or away from the lower right folding core unit under the drive of the pressing translation drive source.

[0019] This invention solves the problem of unstable fabric posture during folding of waistbands in existing technologies by fixing the upper fabric piece with needle punching in the upper cavity and adsorbing the lower fabric piece with negative pressure in the lower cavity. It also enables automatic folding and interlocking of the waistband through different action sequences of various components. The height of the upper and lower snap-on tongues and push plates is controlled by a lead screw motor, making adjustment easier and ensuring the stability of the fabric pieces at the snap-on edges during the interlocking process, thus improving the success rate of interlocking. By setting a folding core unit to drive the waistband movement, a new method of clamping double-piece material transfer is provided, and it can also be applied to shoulder strap machines, sleeve gusset machines, etc. This invention effectively improves the sewing efficiency of denim waistbands and increases factory production. Attached Figure Description

[0020] Figure 1 This is a perspective view of the waistband folding device in Embodiment 1;

[0021] Figure 2 It is a 3D diagram of the upper folding mechanism;

[0022] Figure 3 This is a 3D view of the upper folding unit;

[0023] Figure 4 This is a schematic diagram showing the relative positions of the upper edge push plate assembly, the upper straight edge push plate assembly, the upper cavity assembly, the upper fixed push plate assembly, and the upper cavity baffle assembly;

[0024] Figure 5 This is a 3D view of the upper edge push plate assembly;

[0025] Figure 6 This is a 3D view of the upper straight-edge push plate assembly;

[0026] Figure 7 This is a three-dimensional view of the upper cavity assembly;

[0027] Figure 8 This is a 3D view of the upper fixed push plate assembly;

[0028] Figure 9 This is a 3D view of the upper cavity baffle assembly;

[0029] Figure 10 This is a 3D view of the downward folding mechanism;

[0030] Figure 11 This is a schematic diagram showing the relative positions of the lower side push plate assembly, the lower snap-on push plate assembly, the lower straight push plate assembly, the lower cavity plate, and the lower cavity baffle assembly;

[0031] Figure 12 This is a 3D view of the lower side push plate assembly;

[0032] Figure 13 This is a 3D view of the lower edge push plate assembly;

[0033] Figure 14 This is a 3D view of the lower straight-edge push plate assembly;

[0034] Figure 15 This is a schematic diagram showing the relative positions of the upper left folding unit and the lower left folding unit;

[0035] Figure 16 It is a diagram showing the folded state of the upper and lower fabric pieces;

[0036] Figure 17 This is a diagram showing the pre-fastening status of the upper and lower fabric pieces;

[0037] Figure 18 It is a diagram showing the folded and interlocked state of the upper and lower fabric pieces;

[0038] Figure 19 This is a perspective view of the waistband folding device in Embodiment 2;

[0039] Figure 20 This is a 3D view of the pressing cavity moving mechanism;

[0040] Figure 21 This is a 3D view of the left pressure unit;

[0041] Figure 22 This is a 3D view of the right pressure unit.

[0042] Component designation explanation:

[0043] 1. Upward folding mechanism

[0044] 11. Top left folding unit

[0045] 111 Second lifting drive source

[0046] 112 Lifting Floating Plate

[0047] 113 Third lifting drive source

[0048] 114 Floating Mounting Plate

[0049] 12 Top right folding unit

[0050] 2. Downward Folding Mechanism

[0051] 21. Lower left folding unit

[0052] 22. Lower right folding unit

[0053] 23. Under the table

[0054] 31 First lifting drive source

[0055] 32. Upper folding fixing plate

[0056] 33 Folding Lifting Platform

[0057] 41 Upper snap-on push plate assembly

[0058] 411 Upper snap-on tongue plate

[0059] 412 Upper edge push plate

[0060] 413 Upper Edge Push Plate Drive Source

[0061] 414 Upper latch tongue plate drive source

[0062] 415 Upper Edge Lifting Bracket

[0063] 416 Upper Edge Guide Drive Source

[0064] 417 Upper Edge Lifting Drive Source

[0065] 418 Upper edge fixing plate

[0066] 42 Upper straight edge push plate assembly

[0067] 421 Upper straight edge fixing plate

[0068] 422 Upper Straight Edge Push Plate Driver Source

[0069] 423 Upper straight edge connecting plate

[0070] 424 Upper straight edge push plate

[0071] 43 Upper cavity assembly

[0072] 431 Lifting Drive Source

[0073] 432 needle-punched block

[0074] 4321 Fixing pin

[0075] 433 Upper cavity plate

[0076] 4331 First slot

[0077] 4332 Through Hole

[0078] 434 Needle-piercing guide block

[0079] 435 Needle-punched block

[0080] 436 tension spring

[0081] 437 Needle-driven source

[0082] 438 Needle Puncture Frame

[0083] 44 Upper fixed push plate assembly

[0084] 441 Fixed push plate bracket

[0085] 442 Fixed push plate drive source

[0086] 443 Upper fixed push plate

[0087] 444 Upper fixed connection plate

[0088] 45 Upper cavity baffle assembly

[0089] 451 Upper Cloth Block Drive Source

[0090] 452 Upper cover cloth block

[0091] 453 Upper cover bracket

[0092] 51 Lower cavity plate

[0093] 511 Second slot

[0094] 52 Lower side push plate assembly

[0095] 521 Lower side tongue plate drive source

[0096] 522 Lower Side Push Plate Drive Source

[0097] 523 Lower Side Push Plate Driver Source Mounting Plate

[0098] 524 Lower side lifting drive source

[0099] 525 Lower side push plate

[0100] 526 Lower side tongue plate

[0101] 53 Lower edge push plate assembly

[0102] 531 Lower Edge Push Plate Drive Source

[0103] 532 Lower Edge Lifting Bracket

[0104] 533 Lower Edge Lifting Drive Source

[0105] 534 Lower Edge Guide Drive Source

[0106] 535 Lower edge push plate

[0107] 536 Lower edge fixing bracket

[0108] 537 Lower Edge Slider

[0109] 54 Lower Straight Edge Push Plate Assembly

[0110] 541 Lower straight edge push plate

[0111] 542 Lower Straight Edge Push Plate Connecting Block

[0112] 543 Lower Straight Edge Guide Rail

[0113] 544 Lower Straight Edge Fixing Bracket

[0114] 545 Lower Straight Edge Push Plate Driver Source

[0115] 55 Lower cavity baffle assembly

[0116] 551 Lower baffle block drive source

[0117] 552 Lower baffle cloth

[0118] 553 Lower fabric support bracket

[0119] 6 pieces of cloth

[0120] 61. Button-up seams on the upper fabric piece.

[0121] 611 Top fabric piece with snap-on edge, non-snap-on side

[0122] 612 Upper fabric piece snap-on edges snap-on sides

[0123] 62. Top fabric piece with non-buttoned edges.

[0124] 7. Lower fabric piece

[0125] 71. Non-buttoned seams on the bottom fabric piece.

[0126] 72. Button edge on the bottom fabric piece.

[0127] 8. Pressing Cavity Moving Mechanism

[0128] 81 Lower right folding core unit

[0129] 82 Lower left folded core unit

[0130] 83 Pressing material moving base plate

[0131] 84-type core translation drive source

[0132] 801 Folding Core

[0133] 802 core support

[0134] 803 Material Pressure Translation Drive Source

[0135] 804 Pressure Material Telescopic Base Plate

[0136] 805 Pressure Holder

[0137] 810 Right Pressure Unit

[0138] 811 Right-side pressure material translation drive source

[0139] 812 Material clamping guide rail

[0140] 813 Pressure Slider Mounting Plate

[0141] 814 Right pressure plate lifting drive source

[0142] 815 Right pressure plate

[0143] 816 Right pressing unit lifting drive source

[0144] 817 Right Pressure Material Lifting Connecting Plate

[0145] 818 Right Pressure Plate

[0146] 819 Pressure Floating Joint

[0147] 8191 Floating Joint Connection Plate

[0148] 820 Left Pressure Unit

[0149] 821 Left pressure material translation drive source

[0150] 822 Material Pressing Guide

[0151] 823 Left pressure plate lifting drive source

[0152] 824 Left pressure plate

[0153] 825 Left Pressure Slider Mounting Plate

[0154] 826 Left pressure material fixing bracket

[0155] 827 Pressure Floating Joint

[0156] 828 Floating Joint Connection Plate Detailed Implementation

[0157] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0158] In the description of this invention, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0159] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0160] Figure 1 The image shown is a perspective view of the waistband folding device of Embodiment 1. In the following description, it will be referred to as... Figure 1 The attached diagram serves as a reference for orientation. The length direction of the lower platform 23 is defined as the left-right direction, with the upper left folding unit 11 located on the left and the upper right folding unit 12 located on the right. The width direction of the lower platform 23 is defined as the front-back direction, with the lower platform 23 located in front of the lower left folding unit 21. The thickness direction of the lower platform 23 is defined as the up-down direction, with the upper folding mechanism 1 located above the lower folding mechanism 2.

[0161] Example 1

[0162] Embodiment 1 provides a waistband folding device for folding the upper and lower fabric pieces of the waistband. For example... Figure 1 As shown, the device includes an upper folding mechanism 1 and a lower folding mechanism 2.

[0163] like Figure 16 As shown, in the upper fabric piece 6 of the waistband, the two long straight edges on the left and right sides of the upper fabric piece 6 are both non-button-upper edges 62, and the short straight edge on the back side of the upper fabric piece 6 is the button-upper edge 61. One side of the button-upper edge 61 is the non-button-upper side 611, and the other side is the button-upper side 612. In the lower fabric piece 7 of the waistband, the short straight edge on the back side of the lower fabric piece 7 is the non-button-upper edge 71; the long straight edge on one side of the left or right side of the lower fabric piece 7 is the button-upper edge 72. The button-upper edge 72 is located on the side of the lower fabric piece 7 closest to the button-upper side 612 of the upper fabric piece.

[0164] like Figure 1-3 As shown, the upper folding mechanism 1 includes an upper folding fixing plate 32, a first lifting drive source 31 mounted on the upper folding fixing plate 32, and an upper folding lifting plate 33 that is connected to the first lifting drive source 31 in a transmission manner. An upper folding unit is provided on the upper folding lifting plate 33, and the first lifting drive source 31 is used to drive the upper folding unit to move up and down as a whole.

[0165] like Figure 3-9 As shown, the upper folding unit includes a second lifting drive source 111 and a floating mounting plate 114 that moves up and down under the drive of the second lifting drive source 111. An upper edge-fastening push plate assembly 41, an upper straight edge push plate assembly 42, an upper cavity assembly 43, an upper fixed push plate assembly 44, and an upper cavity baffle assembly 45 are mounted on the floating mounting plate 114. The second lifting drive source 111 can drive the upper edge-fastening push plate assembly 41, the upper straight edge push plate assembly 42, the upper cavity assembly 43, the upper fixed push plate assembly 44, and the upper cavity baffle assembly 45 to move up and down synchronously.

[0166] Preferably, the upper folding unit further includes a lifting floating plate 112 connected to the second lifting drive source 111, and a third lifting drive source 113 installed at the bottom of the floating mounting plate 114. The third lifting drive source 113 is connected to the lifting floating plate 112. When adjusting the height of the floating mounting plate 114, the second lifting drive source 111 drives the lifting floating plate 112 to move up and down, causing the third lifting drive source 113 and the floating mounting plate 114 to move up and down synchronously, thereby achieving a large-scale adjustment of the height of each component on the floating mounting plate 114. Then, the second lifting drive source 111 stops working, and the third lifting drive source 113 starts working. Since the height of the lifting floating plate 112 is fixed, the third lifting drive source 113 drives the floating mounting plate 114 to move up and down, thereby achieving a small-scale precise adjustment of the height of each component on the floating mounting plate 114.

[0167] The first lifting drive source 31 and the second lifting drive source 111 are both cylinders. The piston rod of the cylinder of the first lifting drive source 31 is connected to the upper folding lifting plate 33, and the piston rod of the cylinder of the second lifting drive source 111 is connected to the lifting floating plate 112. The third lifting drive source 113 is a lead screw motor, the motor part of which is installed at the bottom of the floating mounting plate 114. Its lead screw extends in the vertical direction and passes through the lifting floating plate 112, and its lead screw nut is connected to the lifting floating plate 112. Those skilled in the art can also replace the specific type of linear displacement equipment selected for the first lifting drive source 31, the second lifting drive source 111, and the third lifting drive source 113 as needed.

[0168] like Figure 7 As shown, the upper cavity assembly 43 includes an upper cavity plate 433 installed below the floating mounting plate 114, a needle-punching drive source 437 connected to the floating mounting plate 114 via a needle-punching frame 438, and a needle-punching block 432 that moves up and down under the drive of the needle-punching drive source 437. The bottom of the upper cavity plate 433 is provided with an upper cavity with an opening facing downward for accommodating the upper fabric piece 6. The needle-punching block 432 is located above the upper cavity plate 433, and its lower end is provided with several sets of fixing needles 4321, each set of fixing needles 4321 passing through the upper cavity plate 433. When the needle-punching drive source 437 drives the needle-punching block 432 to move downward, the fixing needles 4321 enter the upper cavity to needle-punch and fix the upper fabric piece 6, thus firmly installing the upper fabric piece 6 in the upper cavity.

[0169] Specifically, the top of the upper cavity plate 433 is provided with two needle-punching guide blocks 434, each needle-punching guide block 434 having an inclined surface, and the inclined surfaces of the two needle-punching guide blocks 434 are arranged opposite each other. A needle-punching block 432 is also slidably disposed on each inclined surface. The fixing needle 4321 at the lower end of each needle-punching block 432 has an included angle (preferably 40°) with the lower surface of the upper cavity plate 433 (i.e., the upper surface of the upper cavity), meaning that each set of fixing needles 4321 is inclined to pierce the upper fabric piece 6, effectively preventing the upper fabric piece 6 from falling off the fixing needle 4321. A needle-punching pressure block 435 is connected to the needle-punching drive source 437, and the needle-punching pressure block 435 abuts against the two needle-punching blocks 432 respectively. Simultaneously, a tension spring 436 is also provided between the needle-punching frame 438 and the needle-punching pressure block 435. When the needle-punching drive source 437 is working, it can drive the needle-punching pressure block 435 to move downward against the elastic force of the tension spring 436. The needle-punching block 432 slides down the inclined plane under the force of the needle-punching pressure block 435, so that the fixing needle 4321 enters the upper cavity and completes the needle-punching and fixing of the upper fabric piece 6. The needle-punching drive source 437 is preferably a cylinder, and its cylinder piston rod is connected to the needle-punching pressure block 435.

[0170] Furthermore, the upper cavity assembly 43 also includes a lifting drive source 431 connected to the floating mounting plate 114, which is mounted on the needle punching machine frame 438. The upper cavity plate 433 has a through hole 4332 communicating with the upper cavity. The output end of the lifting drive source 431 can pass through the through hole 4332 to press down the upper fabric piece 6, causing the upper fabric piece 6 to press against the lower fabric piece 7. The lifting drive source 431 is preferably a cylinder, and its output end is a cylinder piston rod.

[0171] like Figure 4-5 , Figure 7 and Figure 16As shown, the upper edge pusher plate assembly 41 is located on the rear side of the upper cavity assembly 43. It includes an upper edge fixing plate 418 connected to the floating mounting plate 114. An upper edge pusher plate drive source 413 and an upper edge lifting drive source 417 are fixed on the upper edge fixing plate 418. The upper edge pusher plate drive source 413 is connected to the upper edge pusher plate 412. The upper edge pusher plate drive source 413 can drive the upper edge pusher plate 412 to translate upwards towards the cavity (i.e., translate in the front-to-back direction), so that the upper fabric piece folds inwards at the non-fastening side 611 of the fastening edge. An upper edge lifting bracket 415 is connected to the upper edge lifting drive source 417. An upper edge guide drive source 416, an upper edge tongue plate drive source 414, and an upper edge tongue plate 411 are sequentially connected to the upper edge lifting bracket 415. The upper edge lifting drive source 417 can drive the upper edge tongue plate 411 to rise and fall, while the upper edge guide drive source 416 and the upper edge tongue plate drive source 414 can drive the upper edge tongue plate 411 to move upward into the cavity, causing the upper fabric piece to fold inward at the edge-to-edge 612. Preferably, the upper edge lifting drive source 417 is a lead screw motor, the motor part of which is fixedly connected to the upper edge fixing plate 418, the lead screw of which extends in the vertical direction, and the lead screw nut of which is connected to the upper edge lifting bracket 415. The upper edge push plate drive source 413, the upper edge guide drive source 416, and the upper edge tongue plate drive source 414 are all cylinders. The cylinder piston rod of the upper edge push plate drive source 413 is connected to the upper edge push plate 412; the cylinder piston rod of the upper edge guide drive source 416 is connected to the upper edge tongue plate drive source 414; and the cylinder piston rod of the upper edge tongue plate drive source 414 is connected to the upper edge tongue plate 411.

[0172] like Figure 4 , Figure 6-8 and Figure 16 As shown, the upper straight-edge pusher assembly 42 and the upper fixed pusher assembly 44 are respectively disposed on the left and right sides of the upper cavity assembly 43. The upper straight-edge pusher assembly 42 includes an upper straight-edge pusher drive source 422 connected to the floating mounting plate 114 via an upper straight-edge fixed plate 421, and the upper straight-edge pusher drive source 422 is connected to the upper straight-edge pusher 424 via an upper straight-edge connecting plate 423. The upper fixed pusher assembly 44 includes an upper fixed pusher drive source 442 connected to the floating mounting plate 114 via an upper fixed pusher bracket 441, and the upper fixed pusher drive source 442 is connected to the upper fixed pusher 443 via an upper fixed connecting plate 444. The upper straight-edge pusher drive source 422 and the upper fixed pusher drive source 442 can respectively drive the upper straight-edge pusher 424 and the upper fixed pusher 443 to translate upwards towards the cavity (i.e., translate in the left-right direction), causing the two upper fabric non-interlocking edges 62 to fold inwards. Preferably, both the upper straight-edge push plate drive source 422 and the upper fixed push plate drive source 442 are cylinders, and the piston rods of the two cylinders are connected to the upper straight-edge connecting plate 423 and the upper fixed connecting plate 444, respectively.

[0173] like Figure 4 , Figure 7 , Figure 9 and Figure 16 As shown, the upper cavity baffle assembly 45 includes an upper baffle block drive source 451 connected to the floating mounting plate 114 via an upper baffle block bracket 453. The upper baffle block drive source 451 is connected to the upper baffle block 452 and is used to drive the upper baffle block 452 to move up and down. A first slot 4331 is also opened on the rear side of the upper cavity plate 433. The upper baffle block 452 can move downward under the drive of the upper baffle block drive source 451 and pass through the first slot 4331 to enter the upper cavity, causing the upper fabric piece to fold downward against the fastening edge 61. The upper baffle block drive source 451 is preferably a cylinder, and its cylinder piston rod is connected to the upper baffle block 452.

[0174] like Figure 10 As shown, the lower folding mechanism 2 includes a lower platform 23 and a lower folding unit mounted on the lower platform 23, with the lower folding unit located below the upper folding unit.

[0175] like Figure 11-16 As shown, the lower folding unit includes a lower cavity plate 51, a lower side push plate assembly 52, a lower snap-on push plate assembly 53, a lower straight side push plate assembly 54, and a lower cavity baffle assembly 55. The lower cavity plate 51 has a lower cavity at its top for accommodating the lower fabric piece 7. The lower cavity is positioned vertically opposite to the upper cavity and is connected to a negative pressure mechanism for negative pressure adsorption and fixation of the lower fabric piece 7. Specifically, the negative pressure mechanism is a vacuum machine.

[0176] like Figure 11-12 As shown, the lower side push plate assembly 52 is located on the rear side of the lower cavity plate 51. It includes a lower side lifting drive source 524 connected to the lower platform 23, a lower side push plate drive source mounting plate 523 that moves up and down under the drive of the lower side lifting drive source 524, and a lower side tongue plate drive source 521 and a lower side push plate drive source 522 mounted on the lower side push plate drive source mounting plate 523. The lower side push plate drive source mounting plate 523 drives the lower side tongue plate drive source 521 and the lower side push plate drive source 522 to move up and down synchronously. The lower side tongue plate drive source 521 is connected to the lower side tongue plate 526, and the lower side push plate drive source 522 is connected to the lower side push plate 525. The lower side tongue plate 526 and the lower side push plate 525 are respectively driven to translate downwards into the cavity (i.e., translate in the front-back direction) to complete the inward folding of the non-fastening edge 71 of the lower fabric piece. Preferably, the lower side lifting drive source 524, the lower side tongue plate drive source 521, and the lower side push plate drive source 522 are all cylinders, wherein the cylinder piston rod of the lower side lifting drive source 524 is connected to the lower side push plate drive source mounting plate 523, the cylinder piston rod of the lower side tongue plate drive source 521 is connected to the lower side tongue plate 526, and the cylinder piston rod of the lower side push plate drive source 522 is connected to the lower side push plate 525.

[0177] like Figure 11 , Figure 13-15 As shown, the lower edge push plate assembly 53 and the lower straight edge push plate assembly 54 are respectively disposed on the left and right sides of the lower cavity plate 51.

[0178] like Figure 13 As shown, the lower edge push plate assembly 53 includes a lower edge lifting drive source 533 connected to the lower platform 23 via a lower edge fixing bracket 536. The lower edge lifting drive source 533 is connected to the lower edge lifting bracket 532 and is used to drive the lower edge lifting bracket 532 to move up and down. A lower edge guide drive source 534, a lower edge push plate drive source 531, and a lower edge push plate 535 are sequentially connected to the lower edge lifting bracket 532. Both the lower edge guide drive source 534 and the lower edge push plate drive source 531 can drive the lower edge push plate 535 to translate downwards towards the cavity (i.e., translate in the left and right direction), so that the lower fabric piece folds inwards towards the button edge 72. Preferably, the lower edge lifting drive source 533 is a lead screw motor, the motor part of which is fixedly connected to the lower edge fixing bracket 536, the lead screw of which extends in the up and down direction, and the lead screw nut of which is connected to the lower edge lifting bracket 532. To guide the vertical movement of the lower edge lifting bracket 532, a lower edge slider 537 extending in the vertical direction is provided on the lower edge fixed bracket 536, and a lower edge guide rail that slides and engages with the lower edge slider 537 is provided on the lower edge lifting bracket 532. Both the lower edge guide drive source 534 and the lower edge push plate drive source 531 are cylinders. The cylinder piston rod of the lower edge guide drive source 534 is connected to the lower edge push plate drive source 531, and the cylinder piston rod of the lower edge push plate drive source 531 is connected to the lower edge push plate 535.

[0179] like Figure 14 As shown, the lower straight edge push plate assembly 54 includes a lower straight edge push plate drive source 545 connected to the lower platform 23 via a lower straight edge fixing bracket 544. The lower straight edge push plate drive source 545 is connected to the lower straight edge push plate 541 via a lower straight edge push plate connecting block 542, and is used to drive the lower straight edge push plate 541 to translate downwards into the lower cavity (i.e., translate in the left-right direction) to press the lower fabric piece 7 placed in the lower cavity. Preferably, the lower straight edge push plate drive source 545 is a cylinder, and its cylinder piston rod is connected to the lower straight edge push plate 541 via the lower straight edge push plate connecting block 542. To guide the translation of the lower straight edge push plate 541 and avoid skewing, the lower straight edge push plate assembly 54 also includes a fixedly installed lower straight edge guide rail 543, which extends in the left-right direction, and the lower straight edge push plate connecting block 542 is slidably engaged with the lower straight edge guide rail 543.

[0180] like Figure 11As shown, the lower cavity baffle assembly 55 includes a lower baffle block drive source 551 connected to the lower platform 23 via a lower baffle block bracket 553. The lower baffle block drive source 551 is connected to the lower baffle block 552 and is used to drive the lower baffle block 552 to move up and down. A second slot 511 is also formed on the lower cavity plate 51. The lower baffle block 552 can move upward under the drive of the lower baffle block drive source 551 and pass through the second slot 511 to enter the lower cavity, causing the lower fabric piece to fold upward against the fastening edge 71. The lower baffle block drive source 551 is preferably a cylinder, and its cylinder piston rod is connected to the lower baffle block 552.

[0181] like Figure 15 As shown, the upper straight-edge push plate assembly 42 and the lower snap-edge push plate assembly 53 are arranged opposite each other, and both are located on the same side of the upper cavity plate 433 and the lower cavity plate 51; the upper fixed push plate assembly 44 and the lower straight-edge push plate assembly 54 are arranged opposite each other, and both are located on the same side of the upper cavity plate 433 and the lower cavity plate 51.

[0182] Combination Figure 1-16 As can be seen, the working process of the waistband folding device in Embodiment 1 is as follows:

[0183] Initial state: The cylinder piston rods of the first lifting drive source 31 and the second lifting drive source 111 are both in the extended state. The third lifting drive source 113 makes the floating mounting plate 114 at the preset loading height. At this time, the distance between the upper cavity and the lower cavity is the preset distance, which is specifically 30mm.

[0184] Feeding: The lower fabric piece 7 is manually placed into the lower cavity, and the upper fabric piece 6 is fed into the upper cavity. At this time, the needle-punching drive source 437 drives the needle-punching block 432 to move downward, and the fixing needle 4321 passes through the upper cavity plate 433, enters the upper cavity, and pierces the upper fabric piece 6, completing the fixing of the upper fabric piece 6. Then, the cylinder piston rod of the fabric blocking block drive source 451 extends, driving the upper fabric blocking block 452 to move downward. The upper fabric blocking block 452 passes through the upper cavity, causing the upper fabric piece to bend downward against the fastening edge 61.

[0185] When the negative pressure mechanism is activated, the lower fabric piece 7 is adsorbed and fixed in the lower cavity due to the negative pressure. The cylinder piston rods of the lower side lifting drive source 524 and the lower side tongue plate drive source 521 both extend, and then the cylinder piston rod of the lower side lifting drive source 524 retracts, driving the lower side tongue plate 526 to press onto the lower fabric piece 7.

[0186] Folding: The folding action of the upper folding unit is as follows: The piston rod of the cylinder of the upper straight edge push plate drive source 422 extends, and the upper straight edge push plate 424 enters the upper cavity; the piston rod of the cylinder of the upper fixed push plate drive source 442 retracts, and the upper fixed push plate 443 enters the upper cavity, folding the two non-clasp edges 62 of the upper fabric pieces inward into the upper cavity. The piston rod of the cylinder of the upper snap-edge push plate drive source 413 extends, driving the upper snap-edge push plate 412 to move towards the upper cavity, folding the non-clasp side 611 of the snap-edge edge of the upper fabric piece inward into the upper cavity. The upper snap-edge lifting drive source 417 drives its screw to rotate, causing the upper snap-edge lifting bracket 415 to move to the set pre-folding height, and then the piston rod of the cylinder of the upper snap-edge tongue plate drive source 414 extends, driving the upper snap-edge tongue plate 411 to move towards the upper cavity, pre-folding the snap-edge side 612 of the snap-edge edge of the upper fabric piece inward into the upper cavity.

[0187] The folding action of the lower folding unit is as follows: The piston rod of the cylinder of the lower straight edge push plate drive source 545 extends, driving the lower straight edge push plate 541 to move horizontally towards the lower cavity and press against the lower fabric piece 7. The piston rod of the cylinder of the lower side tongue plate drive source 521 retracts, driving the lower side tongue plate 526 to exit the lower cavity. The piston rod of the cylinder of the lower fabric block drive source 551 extends, driving the lower fabric block 552 to move upward and pass through the lower cavity plate 51, causing the non-fastening edge 71 of the lower fabric piece to bend upward. The piston rod of the cylinder of the lower side lifting drive source 524 extends, driving the lower side tongue plate drive source 521 and the lower side push plate drive source 522 to move upward; the piston rods of the cylinders of the lower side tongue plate drive source 521 and the lower side push plate drive source 522 both extend, driving the lower side tongue plate 526 and the lower side push plate 525 to move horizontally towards the lower cavity respectively, and the lower side tongue plate 526 and the lower side push plate 525 enter the lower cavity, folding the non-buttoned edge 71 of the lower fabric piece inward into the lower cavity. The folding state of the upper fabric piece 6 and the lower fabric piece 7 is as follows. Figure 16 As shown.

[0188] The folding actions of the aforementioned upper and lower folding units can be performed simultaneously.

[0189] Pre-fastening: The third lifting drive source 113 drives its lead screw to rotate, causing the floating mounting plate 114 to move down to the pre-fastening height. The lower fastening edge lifting drive source 533 drives its lead screw to rotate, causing the lower fastening edge push plate 535 to move to the pre-folding height. Then, the cylinder piston rod of the lower fastening edge push plate drive source 531 extends, driving the lower fastening edge push plate 535 to move downwards towards the cavity, inserting the lower fabric fastening edge 72 into the gap formed by the folded upper fabric fastening edge fastening side 612, so that the lower fabric fastening edge 72 and the upper fabric fastening edge fastening side 612 are pre-fastened, as shown. Figure 17 As shown.

[0190] Interlocking: The third lifting drive source 113 drives its lead screw to rotate, causing the floating mounting plate 114 to move upward to the joining height. During this process, steps 1) and 2) are performed simultaneously:

[0191] 1) The upper edge lifting drive source 417 drives its screw to rotate, so that the upper edge tongue plate 411 moves to the same height as the upper edge push plate 412. At the same time, the cylinder piston rod of the upper edge guide drive source 416 extends, driving the upper edge tongue plate 411 to fully enter the upper cavity.

[0192] 2) The lower edge lifting drive source 533 drives its lead screw to rotate, so that the lower edge push plate 535 moves to the same height as the lower straight edge push plate 541. At the same time, the cylinder piston rod of the lower edge guide drive source 534 extends, driving the lower edge push plate 535 to fully enter the lower cavity.

[0193] At this point, the folding and interlocking of the waistband is complete, as follows: Figure 18 As shown.

[0194] Furthermore, to simultaneously complete the folding and interlocking of the left and right waistbands and improve work efficiency, such as... Figure 1 As shown, the upper folding mechanism 1 in Embodiment 1 includes two upper folding units, namely the upper left folding unit 11 and the upper right folding unit 12; the lower folding mechanism 2 includes two lower folding units, namely the lower left folding unit 21 and the lower right folding unit 22.

[0195] The upper left folding unit 11 and the lower left folding unit 21 are arranged vertically in a vertically corresponding manner, and the upper right folding unit 12 and the lower right folding unit 22 are arranged vertically in a vertically corresponding manner. The upper left folding unit 11 and the upper right folding unit 12 have the same structure and working process, and are arranged symmetrically from left to right; the lower left folding unit 21 and the lower right folding unit 22 have the same structure and working process, and are arranged symmetrically from left to right.

[0196] Example 2

[0197] like Figure 19 and Figure 20 As shown, to facilitate the movement of the folded and interlocked waistband, Embodiment 2 adds a pressing cavity moving mechanism 8 to Embodiment 1. The pressing cavity moving mechanism 8 is located in front of the upper folding mechanism 1 and the lower folding mechanism 2, and includes a core translation drive source 84, a pressing moving base plate 83 connected to the core translation drive source 84, a folding core unit mounted on the pressing moving base plate 83, and a pressing unit connected to the pressing moving base plate 83. The core translation drive source 84 drives the pressing moving base plate 83, the folding core unit, and the pressing unit to move synchronously in the front-back direction, moving closer to or away from the lower cavity plate 51. Each folding core unit includes a folding core 801 mounted on the pressing moving base plate 83 via a core bracket 802, and the folding core 801 has several vertically penetrating suction holes. The pressing unit is located above the folding core unit and includes a movable pressing plate that can move closer to or away from the folding core 801.

[0198] During operation, the core translation drive source 84 drives the pressing plate 83 to move closer to the lower cavity plate 51, placing the folded core 801 inside the lower cavity. The suction holes on the folded core 801 are connected to the negative pressure mechanism, allowing the lower fabric piece 7 to be suction-adheded and fixed onto the folded core 801. At this time, the pressing plate is away from the folded core 801 and will not interfere with the upper or lower folding unit. After the upper and lower folding units work together to complete the folding and interlocking action of the waistband, the pressing plate moves down and presses the waistband tightly onto the folded core 801. Then, the core translation drive source 84 drives the pressing plate 83 away from the lower cavity plate 51, causing the folded core 801 to exit the lower cavity. This completes the pressing and cavity material transfer actions for the waistband, and the garment awaits material retrieval by the material retrieval mechanism to continue the subsequent sewing work on the waistband.

[0199] As can be seen from the above, the waistband folding device in Embodiment 2 effectively eliminates the influence of the gap between the lower cavity and the lower platform 23 on the stability of material transfer by setting the pressing cavity moving mechanism 8, thus ensuring the smoothness and accuracy of the subsequent material transfer process.

[0200] To simultaneously complete the pressing and cavity transfer actions for both left and right waistbands, thus improving work efficiency, the second embodiment uses two folding core units and two pressing units. These include a lower left folding core unit 82 and a lower right folding core unit 81 mounted on the pressing moving base plate 83, a left pressing unit 820 positioned above the lower left folding core unit 82, and a right pressing unit 810 positioned above the lower right folding core unit 81. The right pressing unit 810 is connected to the pressing moving base plate 83 via a pressing bracket 805. The lower left folding core unit 82 is located to the left of the lower right folding core unit 81, with the lower left folding core unit 82 and the lower right folding core unit 81 and the lower right folding core unit 22 positioned correspondingly. The lower left folding core unit 82 also includes a pressing translation drive source 803 disposed on the pressing moving base plate 83, and a pressing telescopic base plate 804 slidably disposed on the pressing moving base plate 83. The core support 802 in the left pressing unit 820 and the lower left folding core unit 82 are both disposed on the pressing telescopic base plate 804. The pressing telescopic base plate 804 is driven by the pressing translation drive source 803 to move in the left and right directions, moving closer to or away from the lower right folding core unit 81.

[0201] like Figure 21As shown, the left pressing unit 820 is mounted on the pressing telescopic base plate 804 via a left pressing fixing bracket 826. The left pressing fixing bracket 826 is equipped with a pressing guide rail 822, and one end of the pressing guide rail 822 is equipped with a left pressing translation drive source 821. The pressing guide rail 822 extends in the front-to-back direction. The left pressing translation drive source 821 is connected to a floating joint connecting plate 828 via a pressing floating joint 827. A left pressing slider mounting plate 825 is connected to the floating joint connecting plate 828, and the left pressing slider mounting plate 825 is slidably mounted on the pressing guide rail 822. A left pressing plate lifting drive source 823 is also mounted on the left pressing slider mounting plate 825. The left pressing plate lifting drive source 823 is used to drive the left pressing plate 824 to move up and down, and the left pressing translation drive source 821 is used to drive the left pressing plate lifting drive source 823 and the left pressing plate 824 to move synchronously back and forth.

[0202] like Figure 22 As shown, the right pressing unit 810 includes a right pressing unit lifting drive source 816 connected to the pressing bracket 805 via a right pressing fixing plate 818. The right pressing unit lifting drive source 816 is used to drive the right pressing lifting connecting plate 817 to move up and down. A pressing guide rail 812 extending in the front-back direction is connected to the right pressing lifting connecting plate 817, and a pressing slider mounting plate 813 is slidably disposed on the pressing guide rail 812. A right pressing translation drive source 811 is provided at one end of the pressing guide rail 812. The right pressing translation drive source 811 is connected to a floating joint connecting plate 8191 via a pressing floating joint 819, and the floating joint connecting plate 8191 is connected to the pressing slider mounting plate 813. The pressure slider mounting plate 813 is also equipped with a right pressure plate lifting drive source 814, which is used to drive the right pressure plate 815 to move up and down. The right pressure translation drive source 811 is used to drive the right pressure plate lifting drive source 814 and the right pressure plate 815 to move back and forth synchronously. The right pressure unit lifting drive source 816 is used to drive the right pressure translation drive source 811, the pressure plate lifting drive source 814 and the right pressure plate 815 to move up and down synchronously.

[0203] The core translation drive source 84, the pressing translation drive source 803, the left pressing translation drive source 821, the right pressing translation drive source 811, the left pressing plate lifting drive source 823, the right pressing plate lifting drive source 814, and the right pressing unit lifting drive source 816 are all preferably cylinders. Those skilled in the art can also use a lead screw motor as a substitute.

[0204] Combination Figure 1-21 As can be seen, the working process of the waistband folding device in Embodiment 2 is as follows:

[0205] Initial state: The piston rods of the cylinders of the first lifting drive source 31 and the second lifting drive source 111 are both extended. The third lifting drive source 113 causes the floating mounting plate 114 to be at a preset loading height. At this time, the distance between the upper cavity and the lower cavity is a preset distance, specifically 30mm. The piston rods of the cylinders of the core translation drive source 84 and the pressure plate translation drive source 803 are both retracted. The folded core 801 is located in the lower cavity. The pressure plate is located at the furthest point from the folded core 801.

[0206] Feeding: The lower fabric piece 7 is manually placed on the folding core 801, and the upper fabric piece 6 is fed into the upper cavity. At this time, the needle-punching drive source 437 drives the needle-punching block 432 to move downward, and the fixing needle 4321 passes through the upper cavity plate 433, enters the upper cavity, and pierces the upper fabric piece 6, completing the fixing of the upper fabric piece 6. Then, the cylinder piston rod of the fabric blocking block drive source 451 extends, driving the upper fabric blocking block 452 to move downward. The upper fabric blocking block 452 passes through the upper cavity, causing the upper fabric piece to bend downward against the fastening edge 61.

[0207] When the negative pressure mechanism is activated, the lower fabric piece 7 is adsorbed and fixed in the lower cavity due to the negative pressure. The cylinder piston rods of the lower side lifting drive source 524 and the lower side tongue plate drive source 521 both extend, and then the cylinder piston rod of the lower side lifting drive source 524 retracts, driving the lower side tongue plate 526 to press onto the lower fabric piece 7.

[0208] Folding: Same as in Example 1.

[0209] Pre-tightening: Same as in Example 1.

[0210] Interlocking: Same as in Example 1.

[0211] Pressing: The output end of the lifting drive source 431 passes through the through hole 4332 on the upper cavity plate 433, pressing the upper fabric piece 6 and the lower fabric piece 7 onto the folding core 801. Then, the needle-punching drive source 437 drives the needle-punching block 432 to move upward, and the upper cavity assembly 43 releases the fixation of the upper fabric piece 6. The piston rods of the cylinders of the lower edge guide drive source 534, the upper edge tongue plate drive source 414, the upper edge guide drive source 416, the upper edge push plate drive source 413, the upper straight edge push plate drive source 422, the lower side tongue plate drive source 521, the lower side push plate drive source 522, the lower straight edge push plate drive source 545, the upper fabric block drive source 451, and the lower fabric block drive source 551 all retract, and the piston rod of the cylinder of the upper fixed push plate drive source 442 extends. At this time, each push plate, tongue plate, and fabric block in the upper folding unit and the lower folding unit exits the upper cavity or the lower cavity. The third lifting drive source 113 resets, and simultaneously, the upper edge lifting drive source 417 and the lower edge lifting drive source 533 reset. Then, the pressure plate presses down on the waistband of the folding core 801. The piston rods of the cylinders of the lifting drive source 431 and the first lifting drive source 31 retract, at which point the pressing action is complete.

[0212] Cavity material transfer: The piston rod of the cylinder of the core translation drive source 84 extends, driving the pressure material moving base plate 83 to move forward, away from the lower cavity plate 51. The folded core 801 and left pressure plate 824 on the left, and the folded core 801 and right pressure plate 815 on the right, respectively, move away from the lower cavity plate 51, carrying the two waistbands. Then, the piston rod of the cylinder of the pressure material translation drive source 803 extends, driving the pressure material telescopic base plate 804 to move to the right. That is, the folded core 801 and left pressure plate 824 on the left move to the right simultaneously, reducing the distance between the two waistbands to within the sewing range of the pattern machine. At this point, the cavity material transfer action is completed, and the machine waits for the material picking mechanism to pick up the material.

[0213] Reset: After the material handling mechanism completes material handling, the pressure plate resets, the piston rod of the cylinder of the pressure translation drive source 803 retracts, and then the piston rod of the cylinder of the core translation drive source 84 retracts, the folded core 801 resets, and is placed in the lower cavity. The piston rods of the cylinders of the first lifting drive source 31 and the second lifting drive source 111 both extend, and the third lifting drive source 113 drives its lead screw to rotate, driving the floating mounting plate 114 to the preset loading height.

[0214] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A waistband folding device for folding the upper fabric piece (6) and the lower fabric piece (7) of a waistband, characterized in that, It includes an upper folding mechanism (1) and a lower folding mechanism (2); The upper folding mechanism (1) includes an upper folding unit, which includes a floating mounting plate (114) capable of moving up and down. The floating mounting plate (114) is equipped with an upper edge pusher assembly (41), an upper straight edge pusher assembly (42), an upper cavity assembly (43), an upper fixed pusher assembly (44), and an upper cavity baffle assembly (45). The upper cavity assembly (43) includes an upper cavity plate (433) mounted below the floating mounting plate (114), a needle-punching drive source (437) connected to the floating mounting plate (114), and a needle-punching block (432) that moves up and down under the drive of the needle-punching drive source (437). The bottom of the cavity plate (433) is provided with an upper cavity for accommodating the upper fabric piece (6). The lower end of the needle block (432) is provided with a fixing needle (4321), which passes through the upper cavity plate (433). When the needle driving source (437) drives the needle block (432) to move downward, the fixing needle (4321) enters the upper cavity and needles the upper fabric piece (6) to fix it. The upper cavity baffle assembly (45) and the upper edge push plate assembly (41) are used to fold the upper fabric piece's fastening edge (61). The upper straight edge push plate assembly (42) and the upper fixing push plate assembly (44) are used to fold the upper fabric piece's non-fastening edge (62). The lower folding mechanism (2) includes a lower folding unit located below the upper folding unit. The lower folding unit includes a lower cavity plate (51), a lower side push plate assembly (52), a lower snap-on push plate assembly (53), a lower straight push plate assembly (54), and a lower cavity baffle assembly (55). The lower cavity plate (51) has a lower cavity at its top for accommodating the lower fabric piece (7). The lower cavity is arranged opposite to the upper cavity and is connected to a negative pressure mechanism for negative pressure adsorption and fixation of the lower fabric piece (7). The lower cavity baffle assembly (55) and the lower side push plate assembly (52) are used to fold the non-buttoned edges (71) of the lower fabric piece. The lower snap-on push plate assembly (53) is used to fold the buttoned edges (72) of the lower fabric piece. The lower straight push plate assembly (54) is used to limit the position of the lower fabric piece (7). The upper edge push plate assembly (41) includes an upper edge push plate drive source (413) and an upper edge lifting drive source (417) respectively connected to the floating mounting plate (114). The upper edge push plate drive source (413) is connected to the upper edge push plate (412). The upper edge lifting drive source (417) is sequentially connected to an upper edge guide drive source (416), an upper edge tongue plate drive source (414), and an upper edge tongue plate (411). The upper cavity baffle assembly (45) and the lower cavity baffle assembly (55) both include a baffle block driving source and a baffle block that moves up and down under the drive of the baffle block driving source. The baffle block can pass through the upper cavity plate (433) or the lower cavity plate (51) and enter the upper cavity or the lower cavity. The lower side push plate assembly (52) includes a lower side lifting drive source (524), and a lower side tongue plate drive source (521) and a lower side push plate drive source (522) that move up and down synchronously under the drive of the lower side lifting drive source (524). The lower side tongue plate drive source (521) is connected to the lower side tongue plate (526), ​​and the lower side push plate drive source (522) is connected to the lower side push plate (525). The lower edge push plate assembly (53) includes a lower edge lifting drive source (533), a lower edge guide drive source (534), a lower edge push plate drive source (531), and a lower edge push plate (535) connected in sequence to the lower edge lifting drive source (533). The upper straight-edge push plate assembly (42), the upper fixed push plate assembly (44), and the lower straight-edge push plate assembly (54) all include a push plate driving source, and a push plate is connected to the push plate driving source.

2. The waistband folding device according to claim 1, characterized in that, The upper folding mechanism (1) includes two upper folding units, and the lower folding mechanism (2) includes two lower folding units. The two upper folding units and the two lower folding units are arranged in a one-to-one correspondence.

3. The waistband folding device according to claim 1, characterized in that, The upper folding mechanism (1) further includes a first lifting drive source (31), which is used to drive the upper folding unit to move up and down.

4. The waistband folding device according to claim 1, characterized in that, The upper folding unit includes a second lifting drive source (111), and the floating mounting plate (114) moves up and down under the drive of the second lifting drive source (111).

5. The waistband folding device according to claim 4, characterized in that, The upper folding unit also includes a lifting floating plate (112) connected to the second lifting drive source (111) and a third lifting drive source (113) installed on the floating mounting plate (114), the third lifting drive source (113) being connected to the lifting floating plate (112).

6. The waistband folding device according to claim 1, characterized in that, The top of the upper cavity plate (433) is provided with a needle guide block (434), the needle guide block (434) has an inclined surface, the needle block (432) is slidably disposed on the inclined surface, and the fixed needle (4321) has an included angle with the lower surface of the upper cavity plate (433); the needle drive source (437) is connected to a needle pressing block (435), and the needle pressing block (435) abuts against the needle block (432).

7. The waistband folding device according to claim 1, characterized in that, The upper cavity assembly (43) also includes a lifting drive source (431) connected to the floating mounting plate (114). The upper cavity plate (433) has a through hole (4332) communicating with the upper cavity. The output end of the lifting drive source (431) can pass through the through hole (4332) to press the upper fabric piece (6) against the lower fabric piece (7).

8. The waistband folding device according to claim 1, characterized in that, The waistband folding device also includes a pressing cavity moving mechanism (8), which includes a core translation drive source (84), a pressing moving base plate (83) connected to the core translation drive source (84), a folding core unit disposed on the pressing moving base plate (83), and a pressing unit connected to the pressing moving base plate (83). The core translation drive source (84) is used to drive the pressing moving base plate (83) to move closer to or away from the lower cavity plate (51). The folding core unit includes a folding core (801) mounted on the pressing moving base plate (83), and the folding core (801) is provided with a plurality of air suction holes. The pressing unit is disposed above the folding core unit and includes a movable pressing plate that can move closer to or away from the folding core (801).

9. The waistband folding device according to claim 8, characterized in that, The number of folding core units and pressing units are both two, including a lower left folding core unit (82) and a lower right folding core unit (81) disposed on the pressing moving base plate (83), a left pressing unit (820) disposed above the lower left folding core unit (82), and a right pressing unit (810) disposed above the lower right folding core unit (81). The lower left folding core unit (82) also includes a pressing translation drive source (803) disposed on the pressing moving base plate (83) and a pressing telescopic base plate (804) slidably disposed on the pressing moving base plate (83). The folding cores (801) of the left pressing unit (820) and the lower left folding core unit (82) are both disposed on the pressing telescopic base plate (804). The pressing telescopic base plate (804) moves closer to or away from the lower right folding core unit (81) under the drive of the pressing translation drive source (803).

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