Automatic waistband folding and interlocking device and method

Abstract

The application provides a waistband automatic folding and interlocking device, which comprises an upper folding mechanism, a lower folding mechanism and an upper folding feeding mechanism; the upper folding mechanism comprises an upper folding unit, the upper folding unit comprises a floating mounting plate which can move up and down, and the floating mounting plate is provided with an upper interlocking edge pushing plate assembly, an upper straight edge pushing plate assembly, an upper cavity assembly, an upper fixed pushing plate assembly, an upper cavity cloth blocking assembly, an upper edge expanding assembly and an upper clamping jaw assembly; the lower folding mechanism comprises a lower folding unit which is arranged below the upper folding unit and comprises a lower cavity plate, a lower side edge pushing plate assembly, a lower interlocking edge pushing plate assembly, a lower straight edge pushing plate assembly and a lower cavity cloth blocking assembly; the upper folding feeding mechanism comprises an upper folding feeding unit, the upper folding feeding unit comprises an avoiding driving assembly, an upper folding feeding driving source which is in transmission connection with the avoiding driving assembly, and an upper folding feeding plate which is in transmission connection with the upper folding feeding driving source. The application also provides a waistband automatic folding and interlocking method.

Description

Technical Field

[0001] This invention relates to the field of fabric folding technology, and in particular to an automatic folding and interlocking device and method for trouser waistbands. 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 an automatic folding and interlocking device for trouser waistbands, which can automatically complete the folding and interlocking of trouser waistbands.

[0004] This invention provides an automatic folding and interlocking device for waistbands, used for folding the upper and lower fabric pieces of the waistband, including an upper folding mechanism, a lower folding mechanism, and an upper folding feeding mechanism; the upper folding mechanism includes an upper folding unit, which includes a vertically movable floating mounting plate, on which are mounted an upper snap-edge pusher assembly, an upper straight edge pusher assembly, an upper cavity assembly, an upper fixed pusher assembly, an upper cavity baffle assembly, an upper edge widening assembly, and an upper clamping assembly; the upper cavity assembly includes an upper cavity plate installed below the floating mounting plate, the bottom of the upper cavity plate having an upper cavity for accommodating the upper fabric piece, the upper fabric piece being detachably installed in the upper cavity; the upper cavity baffle assembly and the upper snap-edge pusher assembly are used for The upper fabric piece is folded with its snap-on edges folded. The upper straight edge push plate assembly and the upper fixed push plate assembly are used to fold the non-snap-on edges of the upper fabric piece. The upper expanding edge assembly is used to shape the seam formed by folding the snap-on edges of the upper fabric piece. The upper clamping assembly is used to place the trouser fly between the upper and lower fabric pieces. 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 edge push plate assembly, a lower straight edge push plate assembly, and a lower cavity baffle assembly. The top of the lower cavity plate has a lower cavity for accommodating the lower fabric piece. The lower cavity is 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. The lower cavity baffle assembly and the lower side push plate assembly are used to fold the first non-buttoned edge of the lower fabric piece, and the lower buttoned edge push plate assembly is used to fold the buttoned edge of the lower fabric piece; the lower straight edge push plate assembly (54) is used to limit the lower fabric piece (7); the upper buttoned edge push plate assembly includes an upper buttoned edge push plate drive source, an upper buttoned edge push plate driven by the upper buttoned edge push plate drive source, an upper buttoned edge lifting drive source, an upper buttoned edge guide drive source driven by the upper buttoned edge lifting drive source, an upper buttoned edge tongue plate drive source driven by the upper buttoned edge guide drive source, and an upper buttoned edge tongue plate driven by the upper buttoned edge tongue plate drive source; 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 drive source, and are used to limit the lower fabric piece (7); The upper cavity baffle assembly and the lower cavity baffle assembly each include a baffle block drive source and a baffle block that moves up and down under the drive of the baffle block drive 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. The upper edge expansion assembly includes an upper edge expansion rod, a first drive source for driving the upper edge expansion rod to approach or move away from the upper cavity assembly, and a second drive source for driving the upper edge expansion rod to translate along the extension direction of the gap. The upper clamp assembly includes clamp jaws, an upper clamp translation drive source for driving the clamp jaws to translate, and an upper clamp lifting drive source for driving the clamp jaws to move up and down.The lower side push plate assembly includes a lower side limiting drive source, a lower side lifting drive source, and a lower side tongue plate drive source and a lower side push plate drive source that move synchronously up and down under the drive of the lower side lifting drive source. The lower side tongue plate drive source is convexly connected to the lower side tongue plate, and the lower side push plate drive source is convexly connected to the lower side push plate. The lower side limiting drive source is disposed between the lower side tongue plate and the lower cavity, and is used to limit the stroke of the lower side tongue plate. The lower snap-on push plate assembly includes a lower snap-on lifting drive source, a lower snap-on guide drive source convexly connected to the lower snap-on lifting drive source, and a lower snap-on push plate drive source convexly connected to the lower snap-on guide drive source. The upper folding feeding mechanism includes an upper folding feeding unit disposed below the upper cavity assembly. The upper folding feeding unit includes an avoidance driving assembly, an upper folding feeding driving source connected to the avoidance driving assembly, and an upper folding feeding plate connected to the upper folding feeding driving source. The top of the upper folding feeding plate is provided with several feeding pins. The avoidance driving assembly is used to drive the upper folding feeding driving source and the upper folding feeding plate to simultaneously approach or move away from the upper cavity assembly. The upper folding feeding driving source is used to drive the upper folding feeding plate into or out of the upper cavity.

[0005] Preferably, the upper cavity assembly further includes a needle-punching drive source and a needle-punching block that moves up and down under the drive of the needle-punching drive source. The lower end of the needle-punching block is provided with a fixing needle, which passes through the upper cavity plate. When the needle-punching drive source drives the needle-punching block to move down, the fixing needle enters the upper cavity and needles and fixes the upper fabric piece.

[0006] 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.

[0007] Preferably, the upper cavity is connected to a negative pressure mechanism for negative pressure adsorption and fixation of the upper fabric sheet.

[0008] Preferably, the upper cavity assembly further includes a lifting drive source that is pulsatorically connected to the floating mounting plate. The upper cavity plate has a through hole that communicates 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.

[0009] Preferably, the avoidance drive assembly includes a first upper folding avoidance drive source for driving the upper folding feeding drive source and the upper folding feeding plate to move up and down simultaneously, and a second upper folding avoidance drive source for driving the first upper folding avoidance drive source, the upper folding feeding drive source and the upper folding feeding plate to move horizontally simultaneously.

[0010] Preferably, the device further includes a pressing cavity moving mechanism, which includes a core translation drive source, a pressing moving base plate driven by the core translation drive source, a folding core unit disposed on the pressing moving base plate, and a pressing unit driven by 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 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.

[0011] 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.

[0012] Preferably, the upper folding mechanism includes two upper folding units, the lower folding mechanism includes two lower folding units, and the upper folding feeding mechanism includes two upper folding feeding units.

[0013] The present invention also provides a method for automatically folding and interlocking waistbands, using the aforementioned automatic folding and interlocking waistband device, the method comprising the following steps:

[0014] Feeding: The lower fabric piece is placed in the lower cavity, the upper fabric piece is placed on the upper folding feed plate, and the trouser placket is placed on the clamping jaws; the upper folding feed drive source drives the upper folding feed plate to move upward, feeding the upper fabric piece into the upper cavity; the upper cavity assembly removes the upper fabric piece; the upper folding feed drive source drives the upper folding feed plate to move downward, separating the upper fabric piece from the feed needle; the avoidance drive assembly drives the upper folding feed plate away from the upper cavity assembly; the upper cavity fabric blocking assembly's fabric blocking block drive source drives its fabric blocking block to move downward, the fabric blocking block passes through the upper cavity, causing the upper fabric piece to bend downward at the button edge; the lower fabric piece is adsorbed and fixed in the lower cavity due to negative pressure; the lower side push plate assembly drives the lower side tongue plate to press on the lower fabric piece;

[0015] The upper folding unit folds as follows: The push plate drive sources of the upper straight edge push plate assembly and the upper fixed push plate assembly drive their push plates to translate towards the upper cavity, folding the non-button-up side of the upper fabric piece inward; the clamp jaws close and clamp the trouser fly, making the trouser fly tightly against the bottom of the non-button-up side of the upper fabric piece; the upper button-up push plate drive source drives the upper button-up push plate to translate towards the upper cavity, folding the non-button-up side of the button-up side of the upper fabric piece inward; the upper button-up lifting drive source drives the upper button-up tongue drive source to move to the pre-folding height, and the upper button-up tongue drive source drives the upper button-up tongue to translate towards the upper cavity, pre-folding the button-up side of the button-up side of the upper fabric piece inward; the upper expanding assembly drives the upper expanding rod into the gap to shape the gap, and then the upper expanding assembly drives the upper expanding rod to reset;

[0016] The lower folding unit folds as follows: The push plate drive source of the lower straight edge push plate assembly drives its push plate to press against the lower fabric piece; the lower side push plate assembly drives the lower side tongue plate to exit the lower cavity; the baffle block drive source of the lower cavity baffle assembly drives its baffle block to move upward; the baffle block passes through the lower cavity, causing the first non-fastening edge of the lower fabric piece to bend upward; the lower side lifting drive source drives the lower side tongue plate drive source and the lower side push plate drive source to move upward; the lower side tongue plate drive source and the lower side push plate drive source respectively drive the lower side tongue plate and the lower side push plate to translate towards the lower cavity; the lower side push plate enters the lower cavity; at the same time, the lower side limiting drive source restricts the stroke of the lower side tongue plate, causing the lower side tongue plate to partially enter the lower cavity, folding the first non-fastening edge of the lower fabric piece inward;

[0017] Pre-fastening: The floating mounting plate moves down to the pre-fastening height, the lower fastening edge lifting drive source drives the lower fastening edge push plate to move to the pre-folding height, and the lower fastening edge push plate drive source drives the lower fastening edge push plate to move towards the lower cavity, inserting the lower fabric piece fastening edge into the gap, so that the lower fabric piece fastening edge and the upper fabric piece fastening edge fastening side are pre-fastened;

[0018] Interlocking: The floating mounting plate moves up to the joining height; during the upward movement of the floating mounting plate, the upper snap-on lifting drive source drives the upper snap-on tongue plate to move to the same height as the upper snap-on push plate, and the upper snap-on guide drive source drives the upper snap-on tongue plate to fully enter the upper cavity; at the same time, the lower snap-on lifting drive source drives the lower snap-on push plate to move to the same height as the lower straight edge push plate, and the lower snap-on guide drive source drives the lower snap-on push plate to fully enter the lower cavity.

[0019] The advantages of this invention are as follows: By setting up an upper folding mechanism, a lower folding mechanism, and an upper folding feeding mechanism, the upper and lower fabric pieces of the waistband can be folded, pre-fastened, and interlocked sequentially, achieving automated folding and interlocking of the waistband. Automation replaces traditional manual folding and interlocking, effectively reducing time and manpower consumption, significantly improving waistband production efficiency, and reliably ensuring the sewing quality of jeans. Furthermore, this invention reliably achieves the folding and interlocking of the upper and lower fabric pieces, resulting in more stable products, a controllable process, and a more compact shape. Attached Figure Description

[0020] Figure 1 The present invention is a three-dimensional automatic waistband folding and interlocking device. Figure 1 ;

[0021] Figure 2 The present invention is a three-dimensional automatic waistband folding and interlocking device. Figure 2 (Remove the material pressing cavity moving mechanism);

[0022] Figure 3 It is a 3D diagram of the upper folding mechanism;

[0023] Figure 4 This is a 3D view of the upper folding unit;

[0024] Figure 5 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, the upper cavity baffle assembly, the upper edge expansion assembly, and the upper clamp assembly.

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

[0026] Figure 7 This is a 3D view of the upper straight-edge push plate assembly;

[0027] Figure 8 This is a perspective view of Embodiment 1 of the upper cavity assembly;

[0028] Figure 9 This is a perspective view of Embodiment 2 of the upper cavity assembly;

[0029] Figure 10 This is a 3D view of the upper fixed push plate assembly;

[0030] Figure 11 This is a 3D view of the upper cavity baffle assembly;

[0031] Figure 12 This is a 3D view of the upper edge expansion component;

[0032] Figure 13 This is a 3D view of the upper clamp assembly;

[0033] Figure 14 This is a 3D view of the downward folding mechanism;

[0034] Figure 15 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;

[0035] Figure 16 This is a 3D view of the lower side push plate assembly;

[0036] Figure 17 This is a 3D view of the lower edge push plate assembly;

[0037] Figure 18 This is a 3D view of the lower straight-edge push plate assembly;

[0038] Figure 19 This is a schematic diagram showing the relative positions of the upper left folding unit, the lower left folding unit, and the upper left folding feeding unit;

[0039] Figure 20 This is a 3D view of the upper folding feeding unit;

[0040] Figure 21 This is a 3D view of the pressing cavity moving mechanism;

[0041] Figure 22 This is a 3D view of the left pressure unit;

[0042] Figure 23 This is a 3D view of the right pressure unit.

[0043] Figure 24 It is a diagram showing the folded state of the upper and lower fabric pieces;

[0044] Figure 25 This is a diagram showing the pre-fastening status of the upper and lower fabric pieces;

[0045] Figure 26 This is a diagram showing the folded and interlocked state of the upper and lower fabric pieces.

[0046] Component designation explanation:

[0047] 1. Upward folding mechanism

[0048] 11. Top left folding unit

[0049] 111 Second lifting drive source

[0050] 112 Lifting Floating Plate

[0051] 113 Third Lifting Drive Source

[0052] 114 Floating Mounting Plate

[0053] 12 Top right folding unit

[0054] 2. Downward Folding Mechanism

[0055] 21. Lower left folding unit

[0056] 22. Lower right folding unit

[0057] 23. Under the table

[0058] 31 First lifting drive source

[0059] 32. Upper folding fixing plate

[0060] 33 Folding Lifting Platform

[0061] 41 Upper edge push plate assembly

[0062] 411 Upper snap-on tongue plate

[0063] 412 Upper edge push plate

[0064] 413 Upper Edge Push Plate Drive Source

[0065] 414 Upper latch tongue plate drive source

[0066] 415 Upper Edge Lifting Bracket

[0067] 416 Upper Edge Guide Drive Source

[0068] 417 Upper Edge Lifting Drive Source

[0069] 419 Upper edge fixing plate

[0070] 42 Upper straight edge push plate assembly

[0071] 421 Upper straight edge fixing plate

[0072] 422 Upper Straight Edge Push Plate Driver Source

[0073] 423 Upper straight edge connecting plate

[0074] 424 Upper straight edge push plate

[0075] 43 Upper cavity assembly

[0076] 431 Lifting Drive Source

[0077] 432 needle-punched block

[0078] 4321 Fixing pin

[0079] 433 Upper cavity plate

[0080] 4331 First slot

[0081] 4332 Through Hole

[0082] 434 Needle-piercing guide block

[0083] 435 Needle-punched block

[0084] 436 tension spring

[0085] 437 Needle-driven source

[0086] 439 Needle Puncture Frame

[0087] 44 Upper fixed push plate assembly

[0088] 441 Fixed push plate bracket

[0089] 442 Fixed push plate drive source

[0090] 443 Upper fixed push plate

[0091] 444 Upper fixed connection plate

[0092] 45 Upper cavity baffle assembly

[0093] 451 Upper Cloth Block Drive Source

[0094] 452 Upper cover cloth block

[0095] 453 Upper cover bracket

[0096] 46 Upper edge expansion component

[0097] 461 Upper expansion edge fixing bracket

[0098] 462 Upper expansion edge connecting bracket

[0099] 463 Upper expansion rod first drive source

[0100] 464 Upper expansion rod

[0101] 465 Upper Expansion Rod Second Drive Source

[0102] 466 Upper Expanded Edge Connecting Plate

[0103] 467 Upper Expanding Edge Guide Rail

[0104] 47 Upper clamp assembly

[0105] 471 Upper clamp translation drive source

[0106] 472 Upper clamp lifting connecting plate

[0107] 473 Clamping jaws

[0108] 474 Lower gripper

[0109] 475 Upper Gripper

[0110] 476 Upper clamp connecting plate

[0111] 477 Upper Clamp Lifting Drive Source

[0112] 478 Upper clamp fixing plate

[0113] 511 Second slot

[0114] 52 Lower side push plate assembly

[0115] 521 Lower side tongue plate drive source

[0116] 522 Lower Side Push Plate Drive Source

[0117] 523 Lower Side Push Plate Driver Source Mounting Plate

[0118] 524 Lower side lifting drive source

[0119] 525 Lower side push plate

[0120] 526 Lower side tongue plate

[0121] 5261 Lower side tongue plate connecting plate

[0122] 527 Lower Side Limiting Drive Source

[0123] 53 Lower edge push plate assembly

[0124] 531 Lower Edge Push Plate Drive Source

[0125] 532 Lower Edge Lifting Bracket

[0126] 533 Lower Edge Lifting Drive Source

[0127] 534 Lower Edge Guide Drive Source

[0128] 535 Lower edge push plate

[0129] 536 Lower edge fixing bracket

[0130] 537 Lower Edge Slider

[0131] 54 Lower Straight Edge Push Plate Assembly

[0132] 541 Lower straight edge push plate

[0133] 542 Lower Straight Edge Push Plate Connecting Block

[0134] 543 Lower Straight Edge Guide Rail

[0135] 544 Lower Straight Edge Fixing Bracket

[0136] 545 Lower Straight Edge Push Plate Driver Source

[0137] 55 Lower cavity baffle assembly

[0138] 551 Lower baffle block drive source

[0139] 552 Lower baffle cloth

[0140] 553 Lower fabric support bracket

[0141] 6 pieces of cloth

[0142] 61. Button-up seams on the upper fabric piece.

[0143] 611 Top fabric piece, snap-on edge, non-snap-on side

[0144] 612 Upper fabric piece snap-on edges snap-on sides

[0145] 62. Top fabric piece with non-buttoned edges.

[0146] 7. Lower fabric piece

[0147] 71. First non-buttoned edge of the lower fabric piece.

[0148] 72. Button edge on the bottom fabric piece.

[0149] 73. Second non-buttoned edge of the lower fabric piece.

[0150] 8. Upward folding feeding mechanism

[0151] 81 Folding Feeding Bracket

[0152] 82 Folding Feeding Drive Source

[0153] 83 First Upward Folding Avoidance Drive Source

[0154] 84 Folding feeder connecting plate

[0155] 85 Second upper folding avoidance drive source

[0156] 86 Folding Feeding Base Plate

[0157] 87 Folding Feeding Rail

[0158] 88 Folding feeder plate

[0159] 89 Feed needle

[0160] 801 Upper Left Folding Feeding Unit

[0161] 802 Upper right folding feeding unit

[0162] 9. Pressing Cavity Moving Mechanism

[0163] 91 Lower right folding core unit

[0164] 92 Lower left folded core unit

[0165] 93 Pressing material moving base plate

[0166] Type 94 core translation drive source

[0167] 901 Folding Core

[0168] 902 type core bracket

[0169] 903 Material Pressure Translation Drive Source

[0170] 904 Pressure Material Telescopic Base Plate

[0171] 905 Material Holding Bracket

[0172] 910 Right pressing unit

[0173] 911 Right-side pressure material translation drive source

[0174] 912 Material clamping guide rail

[0175] 913 Pressure Slider Mounting Plate

[0176] 914 Right pressure plate lifting drive source

[0177] 915 Right pressure plate

[0178] 916 Right pressing unit lifting drive source

[0179] 917 Right Pressure Material Lifting Connecting Plate

[0180] 918 Right pressure plate fixing plate

[0181] 919 Pressure Floating Joint

[0182] 9191 Floating Joint Connection Plate

[0183] 920 Left Pressure Unit

[0184] 921 Left pressure material translation drive source

[0185] 922 Material Pressing Guide

[0186] 923 Left pressure plate lifting drive source

[0187] 924 Left pressure plate

[0188] 925 Left Pressure Slider Mounting Plate

[0189] 926 Left pressure material fixing bracket

[0190] 927 Pressure Floating Joint

[0191] 928 Floating Joint Connection Plate Detailed Implementation

[0192] 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.

[0193] 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.

[0194] 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.

[0195] Figure 2 The figure shown is a three-dimensional representation of the automatic folding and interlocking device for waistbands of the present invention. Figure 2 In the following description, , Figure 2The 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.

[0196] like Figure 1 and Figure 2 As shown, the present invention provides an automatic folding and interlocking device for waistbands. The device is used to fold the upper and lower fabric pieces of the waistband and includes an upper folding mechanism 1, a lower folding mechanism 2 and an upper folding feeding mechanism 8.

[0197] like Figure 24 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 first non-button-upper edge 71; the long straight edge on one side of the left and right sides of the lower fabric piece 7 is the button-upper edge 72, and the long straight edge on the other side of the left and right sides of the lower fabric piece 7 is the second non-button-upper edge 73. The second non-button-upper edge 73 is located on the side of the lower fabric piece 7 closest to the non-button-upper side 611 of the upper fabric piece, and 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.

[0198] like Figure 4-13 As shown, the upper folding mechanism 1 includes an upper folding unit, which includes a floating mounting plate 114 that can move up and down. The floating mounting plate 114 is equipped with an upper edge push plate assembly 41, an upper straight edge push plate assembly 42, an upper cavity assembly 43, an upper fixed push plate assembly 44, an upper cavity baffle assembly 45, an upper edge expansion assembly 46, and an upper clamp assembly 47. The upper cavity assembly 43 includes an upper cavity plate 433 installed below the floating mounting plate 114. The bottom of the upper cavity plate 433 is provided with an upper cavity for accommodating the upper fabric piece 6. The upper fabric piece 6 is detachably installed in the upper cavity. The upper cavity baffle assembly 45 and the upper edge push plate assembly 41 are used to fold the upper fabric piece's snap-on edges 61. The upper straight edge push plate assembly 42 and the upper fixed push plate assembly 44 are used to fold the two upper fabric pieces' non-snap-on edges 62. The upper edge widening assembly 46 is used to shape the shape of the seam formed by folding the upper fabric piece's snap-on edges 61. The upper clamp assembly 47 is used to place the trouser fly between the upper fabric piece 6 and the lower fabric piece 7.

[0199] like Figure 14-19As shown, the lower folding mechanism 2 includes a lower folding unit located below the upper folding unit. This 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-on 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. The lower cavity baffle assembly 55 and the lower side push plate assembly 52 are used to fold the first non-snap-on edge 71 of the lower fabric piece, the lower snap-on push plate assembly 53 is used to fold the snap-on edge 72 of the lower fabric piece, and the lower straight-on push plate assembly 54 is used to limit the movement of the lower fabric piece 7.

[0200] like Figure 6 As shown, the upper buckle push plate assembly 41 includes an upper buckle push plate drive source 413, an upper buckle push plate 412 that is driven by the upper buckle push plate drive source 413, an upper buckle lifting drive source 417, an upper buckle guide drive source 416 that is driven by the upper buckle lifting drive source 417, an upper buckle tongue plate drive source 414 that is driven by the upper buckle guide drive source 416, and an upper buckle tongue plate 411 that is driven by the upper buckle tongue plate drive source 414.

[0201] like Figure 7 , Figure 10 and Figure 18 As shown, 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 drive source and a push plate that is connected to the push plate drive source in a transmission manner.

[0202] like Figure 11 and Figure 15 As shown, both the upper cavity baffle assembly 45 and the lower cavity baffle assembly 55 include a baffle block drive source and a baffle block that moves up and down under the drive of the baffle block drive 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.

[0203] like Figure 12 As shown, the upper edge expansion assembly 46 includes an upper edge expansion rod 464, a first upper edge expansion rod drive source 463 for driving the upper edge expansion rod 464 closer to or further away from the upper cavity assembly 43, and a second upper edge expansion rod drive source 465 for driving the upper edge expansion rod 464 to translate along the extension direction of the seam formed between the folded upper fabric piece and the fastening edge 61.

[0204] like Figure 13 As shown, the upper clamp assembly 47 includes a clamp jaw 473, an upper clamp translation drive source 471 for driving the clamp jaw 473 to translate, and an upper clamp lifting drive source 477 for driving the clamp jaw 473 to move up and down.

[0205] like Figure 16As shown, the lower side push plate assembly 52 includes a lower side limiting drive source 527, 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 side limiting drive source 527 is disposed between the lower side tongue plate 526 and the lower cavity, and its output end is used to limit the stroke of the lower side tongue plate 526.

[0206] like Figure 17 As shown, the lower edge push plate assembly 53 includes a lower edge lifting drive source 533, a lower edge guide drive source 534 that is driven by the lower edge lifting drive source 533, a lower edge push plate drive source 531 that is driven by the lower edge guide drive source 534, and a lower edge push plate 535 that is driven by the lower edge push plate drive source 531.

[0207] like Figure 20 As shown, the upper folding feeding mechanism 8 includes an upper folding feeding unit disposed below the upper cavity assembly 43. The upper folding feeding unit includes an avoidance driving assembly, an upper folding feeding driving source 82 that is pulverizedly connected to the avoidance driving assembly, and an upper folding feeding plate 88 that is pulverizedly connected to the upper folding feeding driving source 82. The top of the upper folding feeding plate 88 is provided with a plurality of feeding needles 89. The avoidance driving assembly is used to drive the upper folding feeding driving source 82 and the upper folding feeding plate 88 to simultaneously approach or move away from the upper cavity assembly 43. The upper folding feeding driving source 82 is used to drive the upper folding feeding plate 88 to enter or exit the upper cavity.

[0208] The present invention also provides a method for automatically folding and interlocking waistbands, which uses the aforementioned automatic folding and interlocking waistband device. The method for automatically folding and interlocking waistbands includes the following steps:

[0209] Feeding: Place the lower fabric piece 7 in the lower cavity, place the upper fabric piece 6 on the upper folding feed plate 88, and place the trouser placket on the clamping jaws 473; the upper folding feed drive source 82 drives the upper folding feed plate 88 to move upward, feeding the upper fabric piece 6 into the upper cavity, the upper cavity assembly 43 removes the upper fabric piece 6, the upper folding feed drive source 82 drives the upper folding feed plate 88 to move downward, the upper fabric piece 6 separates from the feed needle 89, and the avoidance drive assembly drives the upper folding feed plate 88 away from the upper cavity assembly 43; the upper cavity baffle assembly 45 baffle block drive source drives its baffle block to move downward, the baffle block passes through the upper cavity, causing the upper fabric piece to bend downward against the button edge 61; the lower fabric piece 7 is adsorbed and fixed in the lower cavity due to negative pressure, and the lower side push plate assembly 52 drives the lower side tongue plate 526 to press on the lower fabric piece 7.

[0210] The upper folding unit folds: The pusher drive sources of the upper straight edge pusher assembly 42 and the upper fixed pusher assembly 44 drive the pushers of both to translate upwards towards the cavity, folding the two upper fabric non-buttoning edges 62 inwards; the clamp jaws 473 close and clamp the trouser placket, so that the trouser placket is tightly against the bottom of the upper fabric non-buttoning edge 62 adjacent to the upper fabric buttoning edge non-buttoning side 611; the upper buttoning edge pusher drive source 413 drives the upper buttoning edge pusher 412 to translate upwards towards the cavity, folding the upper fabric buttoning edge non-buttoning side 62 inwards; 11 Fold inward; the upper fastening edge lifting drive source 417 drives the upper fastening edge tongue drive source 414 to move to the pre-folding height, the upper fastening edge tongue drive source 414 drives the upper fastening edge tongue 411 to move upward into the cavity, and pre-folds the upper fabric piece fastening edge 612 inward; the upper expanding edge assembly 46 drives the upper expanding edge rod 464 to enter the gap formed by the folded upper fabric piece fastening edge 612, and shapes the shape of the gap, and then the upper expanding edge assembly 46 drives the upper expanding edge rod 464 to reset.

[0211] The lower folding unit folds as follows: The pusher drive source of the lower straight edge pusher assembly 54 drives its pusher to press against the lower fabric piece 7; the lower side pusher assembly 52 drives the lower side tongue plate 526 to exit the lower cavity; the baffle block drive source of the lower cavity baffle assembly 55 drives its baffle block to move upward, the baffle block passes through the lower cavity, causing the first non-fastening edge 71 of the lower fabric piece to bend upward; the lower side lifting drive source 524 drives the lower side tongue plate drive source 521 and the lower side pusher drive source 522 to move upward, the lower side tongue plate drive source 521 and the lower side pusher drive source 522 respectively drive the lower side tongue plate 526 and the lower side pusher plate 525 to translate towards the lower cavity, the lower side pusher plate 525 enters the lower cavity, and at the same time the lower side limiting drive source 527 restricts the stroke of the lower side tongue plate 526, causing the lower side tongue plate 526 to partially enter the lower cavity, folding the first non-fastening edge 71 of the lower fabric piece inward, as shown. Figure 24 As shown.

[0212] Pre-fastening: The floating mounting plate 114 moves down to the pre-fastening height. The lower fastening edge lifting drive source 533 drives the lower fastening edge push plate 535 to move to the pre-folding height. The lower fastening edge push plate drive source 531 drives the lower fastening edge push plate 535 to move downwards into 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 25 As shown.

[0213] Interlocking: The floating mounting plate 114 moves upward to the joining height; during the upward movement of the floating mounting plate 114, the upper snap-on edge lifting drive source 417 drives the upper snap-on edge tongue plate 411 to move to the same height as the upper snap-on edge push plate 412, and the upper snap-on edge guide drive source 416 drives the upper snap-on edge tongue plate 411 to fully enter the upper cavity; at the same time, the lower snap-on edge lifting drive source 533 drives the lower snap-on edge push plate 535 to move to the same height as the lower straight edge push plate 541, and the lower snap-on edge guide drive source 534 drives the lower snap-on edge push plate 535 to fully enter the lower cavity. Thus, the folding and interlocking action of the waistband is completed. Figure 26 As shown.

[0214] As can be seen from the above, this invention, by setting up an upper folding mechanism 1, a lower folding mechanism 2, and an upper folding feeding mechanism 8, can sequentially fold, pre-fasten, and interlock the upper fabric piece 6 and the lower fabric piece 7 of the waistband, realizing automated folding and interlocking of the waistband. Automation replaces traditional manual folding and interlocking, effectively reducing time and manpower consumption, significantly improving waistband production efficiency, and reliably ensuring the sewing quality of jeans. Furthermore, this invention reliably achieves the folding and interlocking of the upper fabric piece 6 and the lower fabric piece 7, making the processed products more stable, the process controllable, and the shape more compact.

[0215] The preferred structures of the upper folding mechanism 1, the lower folding mechanism 2, and the upper folding feeding mechanism 8 in the automatic folding and interlocking device for waistbands of the present invention will be described below.

[0216] Upward folding mechanism

[0217] like Figure 1-4 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.

[0218] The upper folding unit includes a second lifting drive source 111 mounted on the upper folding lifting plate 33. The floating mounting plate 114 moves up and down under the drive of the second lifting drive source 111. The second lifting drive source 111 can drive the upper edge push plate assembly 41, the upper straight edge push plate assembly 42, the upper cavity assembly 43, the upper fixed push plate assembly 44, the upper cavity baffle assembly 45, the upper edge expansion assembly 46, and the upper clamp assembly 47 to move up and down synchronously.

[0219] 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.

[0220] 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.

[0221] like Figure 4-5 , Figure 8 and Figure 9 As shown, the upper cavity assembly 43 has the following two embodiments to achieve detachable installation between the upper fabric piece 6 and the upper cavity:

[0222] like Figure 8 As shown, in Embodiment 1 of the upper cavity assembly 43, the upper cavity is connected to a negative pressure mechanism for negative pressure adsorption and fixation of the upper fabric sheet 6. Specifically, the negative pressure mechanism is a vacuum machine. The negative pressure mechanism connected to the upper cavity and the negative pressure mechanism connected to the lower cavity can be the same negative pressure mechanism or two independent negative pressure mechanisms.

[0223] like Figure 9As shown, in embodiment 2, the upper cavity assembly 43 includes 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 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 passes through the upper cavity plate 433. When the needle-punching drive source 437 drives the needle-punching block 432 to move down, the fixing needles 4321 enter the upper cavity and needle-punch the upper fabric piece 6 to fix it, thus firmly installing the upper fabric piece 6 in the upper cavity.

[0224] In Embodiment 2 of the upper cavity assembly 43, two needle-punching guide blocks 434 are provided on the top of the upper cavity plate 433. Each needle-punching guide block 434 has 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 arranged 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). That is, each set of fixing needles 4321 is inclined to pierce the upper fabric piece 6, which can effectively prevent 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. At the same time, 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.

[0225] Furthermore, 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 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.

[0226] like Figure 5-6 , Figure 8-9 and Figure 24As 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.

[0227] like Figure 5 , Figure 7-10 and Figure 24 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 respectively connected to the upper straight-edge connecting plate 423 and the upper fixed connecting plate 444.

[0228] like Figure 5 , Figure 8-9 , Figure 11 and Figure 24 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.

[0229] like Figure 5 , Figure 12 and Figure 25 As shown, the upper edge widening assembly 46 is disposed near the upper edge push plate assembly 41 (close to the side where the upper edge tongue plate 411 is located), and is used to shape the shape of the seam formed by the fastening side 612 of the folded upper fabric piece. The upper edge widening assembly 46 includes an upper edge widening rod 464, a first drive source 463 for driving the upper edge widening rod 464 closer to or away from the upper cavity assembly 43 (i.e., translating in the left-right direction), and a second drive source 465 for driving the upper edge widening rod 464 to translate in the extension direction of the seam formed by the fastening side 612 of the folded upper fabric piece (i.e., translating in the front-back direction). Specifically, the upper edge expanding slider is connected to the floating mounting plate 114 via the upper edge expanding fixing bracket 461, and the upper edge expanding rod second drive source 465 is connected to the upper edge expanding slider via the upper edge expanding connecting plate 466, and the upper edge expanding rod second drive source 465 is connected to the upper edge expanding connecting bracket 462; one side of the upper edge expanding connecting bracket 462 is provided with an upper edge expanding guide rail 467 extending in the left-right direction, and the upper edge expanding guide rail 467 is slidably connected to the upper edge expanding slider; the other side of the upper edge expanding connecting bracket 462 is provided with an upper edge expanding rod first drive source 463, and the upper edge expanding rod first drive source 463 is connected to the upper edge expanding rod 464. Preferably, both the upper edge expanding rod first drive source 463 and the upper edge expanding rod second drive source 465 are cylinders, the cylinder piston rod of the upper edge expanding rod first drive source 463 is connected to the upper edge expanding rod 464, and the cylinder piston rod of the upper edge expanding rod second drive source 465 is connected to the upper edge expanding connecting bracket 462. When the cylinder piston rod of the second drive source 465 of the upper edge expanding rod extends, it drives the first drive source 463 of the upper edge expanding rod and the upper edge expanding rod 464 to move forward simultaneously; when the cylinder piston rod of the first drive source 463 of the upper edge expanding rod extends, it drives the upper edge expanding rod 464 to approach the upper cavity assembly 43.

[0230] like Figure 5 , Figure 13 and Figure 24As shown, the upper clamp assembly 47 is located near the upper clamping push plate assembly 41 (close to the side where the upper clamping push plate 412 is located), and includes clamp jaws 473, an upper clamp translation drive source 471 for driving the clamp jaws 473 to translate in the front-back direction, and an upper clamp lifting drive source 477 for driving the upper clamp translation drive source 471 and the clamp jaws 473 to move up and down simultaneously. The upper clamp lifting drive source 477 is connected to the floating mounting plate 114 through the upper clamp fixing plate 478, and is also connected to the upper clamp translation drive source 471 through the upper clamp lifting connecting plate 472. The upper clamp translation drive source 471 is connected to the clamp jaws 473 through the upper clamp connecting plate 476. The clamp jaws 473 are respectively fixed with a lower jaw 474 and an upper jaw 475 located above the lower jaw 474. Specifically, existing industrial parallel electric grippers can be used. When the clamp jaws 473 open or close, the lower jaw 474 and the upper jaw 475 separate or approach each other to realize the placement or gripping of the trouser fly. Preferably, both the upper clamp lifting drive source 477 and the upper clamp translation drive source 471 are cylinders. The piston rod of the cylinder of the upper clamp lifting drive source 477 is connected to the upper clamp lifting connecting plate 472, and the piston rod of the cylinder of the upper clamp translation drive source 471 is connected to the clamp jaws 473 through the upper clamp connecting plate 476. When the piston rod of the cylinder of the upper clamp lifting drive source 477 extends, it drives the clamp jaws 473 to move downward; when the piston rod of the cylinder of the upper clamp translation drive source 471 extends, it drives the clamp jaws 473 to move forward, closer to the upper cavity assembly 43.

[0231] Downward folding mechanism

[0232] like Figure 14 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.

[0233] like Figure 15-16 and Figure 24As shown, the lower side push plate assembly 52 is disposed on the rear side of the lower cavity plate 51. It includes a lower side limiting drive source 527 and 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 driven to translate downward into the cavity (i.e., translate in the front-to-back direction) to complete the inward folding of the non-fastening edge 71 of the lower fabric piece. The lower side limiting drive source 527 is disposed between the lower side tongue plate 526 and the lower cavity. It is used to limit the stroke of the lower side tongue plate 526, so that the lower side tongue plate 526 has three relative positions with respect to the lower cavity: out of the lower cavity, partially in the lower cavity, and fully in the lower cavity, thereby completing the action of folding the non-fastening edge 71 of the lower fabric piece into different lengths. Preferably, the lower side limiting drive source 527, 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. 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 through the lower side tongue plate connecting plate 5261. The cylinder piston rod of the lower side limiting drive source 527 is used to limit the stroke of the lower side tongue plate connecting plate 5261, and it will not interfere with the folding action of the lower side tongue plate 526. The cylinder piston rod of the lower side push plate drive source 522 is connected to the lower side push plate 525 through the lower side push plate connecting plate, and it is at the same installation height as the lower side tongue plate 526.

[0234] like Figure 15 , Figure 17-18 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.

[0235] like Figure 17 and Figure 24As 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. Preferably, both the lower edge guide drive source 534 and the lower edge push plate drive source 531 are cylinders. The piston rod of the cylinder of the lower edge guide drive source 534 is connected to the lower edge push plate drive source 531, and the piston rod of the cylinder of the lower edge push plate drive source 531 is connected to the lower edge push plate 535.

[0236] like Figure 18 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.

[0237] like Figure 15 and Figure 24As 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 provided on the rear side of 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.

[0238] like Figure 19 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.

[0239] Upward folding feeding mechanism

[0240] like Figure 1-2 and Figures 19-20 As shown, the upper folding feeding mechanism 8 includes an upper folding feeding unit, which is located below the upper cavity assembly 43. The upper folding feeding unit 8 includes an avoidance drive assembly, an upper folding feeding drive source 82 connected to the avoidance drive assembly, and an upper folding feeding plate 88 connected to the upper folding feeding drive source 82. The top of the upper folding feeding plate 88 is provided with several feeding needles 89, which can pierce the fabric piece 6 from bottom to top. The avoidance drive assembly is used to drive the upper folding feeding drive source 82 and the upper folding feeding plate 88 to simultaneously approach or move away from the upper cavity assembly 43, realizing the avoidance action of the upper folding feeding unit 8. The upper folding feeding drive source 82 is used to drive the upper folding feeding plate 88 into or out of the upper cavity, completing the feeding action to the upper cavity.

[0241] The obstacle avoidance drive assembly specifically includes an upper folding feeding base plate 86, an upper folding feeding connecting plate 84 slidably disposed on the upper folding feeding base plate 86, a second upper folding obstacle avoidance drive source 85 for driving the upper folding feeding connecting plate 84 to translate in the left and right direction, and a first upper folding obstacle avoidance drive source 83 disposed on the upper folding feeding connecting plate 84. The first upper folding obstacle avoidance drive source 83 is connected to the upper folding feeding drive source 82 through a connecting plate, and is used to drive the upper folding feeding drive source 82 and the upper folding feeding plate 88 to move up and down simultaneously. The second upper folding obstacle avoidance drive source 85 is used to drive the first upper folding obstacle avoidance drive source 83, the upper folding feeding drive source 82, and the upper folding feeding plate 88 to translate in the left and right direction simultaneously.

[0242] Preferably, the first upper folding avoidance drive source 83, the second upper folding avoidance drive source 85, and the upper folding feeding drive source 82 are all cylinders. The lower end of the cylinder piston rod of the first upper folding avoidance drive source 83 is connected to the upper folding feeding connecting plate 84, the upper end of the cylinder piston rod of the upper folding feeding drive source 82 is connected to the upper folding feeding plate 88 through the upper folding feeding bracket 81, and the end of the cylinder piston rod of the second upper folding avoidance drive source 85 is connected to the upper folding feeding connecting plate 84.

[0243] Furthermore, to simultaneously complete the folding and interlocking of the left and right waistbands and improve work efficiency, such as... Figure 2 As shown, the upper folding mechanism 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. The upper folding feeding mechanism 8 includes two upper folding feeding units, namely the upper left folding feeding unit 801 and the upper right folding feeding unit 802.

[0244] The upper left folding unit 11 and the lower left folding unit 21 are arranged vertically in a vertically corresponding manner, as are the upper right folding unit 12 and the lower right folding unit 22. The upper left folding feeding unit 801 is used to feed material to the upper left folding unit 11, and the upper right folding feeding unit 802 is used to feed material to the upper right folding unit 12. 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. Similarly, 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.

[0245] Pressing cavity moving mechanism

[0246] like Figure 1 , Figure 21-23 As shown, the automatic folding and interlocking device for waistbands of the present invention preferably includes a pressing cavity moving mechanism 9. The pressing cavity moving mechanism 9 is disposed on the front side of the upper folding mechanism 1 and the lower folding mechanism 2. It includes a core translation drive source 94, a pressing moving base plate 93 driven by the core translation drive source 94, a folding core unit disposed on the pressing moving base plate 93, and a pressing unit driven by the pressing moving base plate 93. The core translation drive source 94 is used to drive the pressing moving base plate 93, 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 901 mounted on the pressing moving base plate 93 via a core bracket 902. The folding core 901 is provided with a plurality of vertically penetrating 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 901.

[0247] During operation, the core translation drive source 94 drives the pressing plate 93 to move closer to the lower cavity plate 51, placing the folded core 901 inside the lower cavity. The suction holes on the folded core 901 are connected to the negative pressure mechanism, allowing the lower fabric piece 7 to be suction-fixed onto the folded core 901 by negative pressure. At this time, the pressing plate is away from the folded core 901 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 901. Then, the core translation drive source 94 drives the pressing plate 93 away from the lower cavity plate 51, causing the folded core 901 to exit the lower cavity. This completes the pressing and cavity transfer action of the waistband, and the garment awaits material retrieval by the material retrieval mechanism to continue the subsequent sewing work on the waistband.

[0248] As can be seen from the above, the automatic folding and interlocking device for waistbands of the present invention 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 9, thus ensuring the smoothness and accuracy of the subsequent material transfer process.

[0249] To simultaneously complete the pressing and cavity transfer actions of the left and right waistbands and improve work efficiency, the pressing cavity moving mechanism 9 has two folding core units and two pressing units. These include a lower left folding core unit 92 and a lower right folding core unit 91 mounted on the pressing moving base plate 93, a left pressing unit 920 positioned above the lower left folding core unit 92, and a right pressing unit 910 positioned above the lower right folding core unit 91. The right pressing unit 910 is connected to the pressing moving base plate 93 via a pressing bracket 905. The lower left folding core unit 92 is located to the left of the lower right folding core unit 91, and is positioned in a corresponding manner to the lower left folding unit 21. Similarly, the lower right folding core unit 91 is positioned in a corresponding manner to the lower right folding unit 22. The lower left folding core unit 92 also includes a pressing translation drive source 903 disposed on the pressing moving base plate 93, and a pressing telescopic base plate 904 slidably disposed on the pressing moving base plate 93. The folding cores 901 of the left pressing unit 920 and the lower left folding core unit 92 are both disposed on the pressing telescopic base plate 904. The pressing telescopic base plate 904 moves closer to or away from the lower right folding core unit 91 under the drive of the pressing translation drive source 903.

[0250] like Figure 22As shown, the left pressing unit 920 is mounted on the pressing telescopic base plate 904 via a left pressing fixing bracket 926. The left pressing fixing bracket 926 is equipped with a pressing guide rail 922, and one end of the pressing guide rail 922 is equipped with a left pressing translation drive source 921. The pressing guide rail 922 extends in the front-to-back direction. The left pressing translation drive source 921 is connected to a floating joint connecting plate 928 via a pressing floating joint 927. A left pressing slider mounting plate 925 is connected to the floating joint connecting plate 928 and is slidably mounted on the pressing guide rail 922. A left pressing plate lifting drive source 923 is also mounted on the left pressing slider mounting plate 925. The left pressing plate lifting drive source 923 drives the left pressing plate 924 to move up and down, and the left pressing translation drive source 921 drives the left pressing plate lifting drive source 923 and the left pressing plate 924 to move synchronously back and forth.

[0251] like Figure 23 As shown, the right pressing unit 910 includes a right pressing unit lifting drive source 916 connected to the pressing bracket 905 via a right pressing fixing plate 918. The right pressing unit lifting drive source 916 is used to drive the right pressing lifting connecting plate 917 to move up and down. A pressing guide rail 912 extending in the front-back direction is connected to the right pressing lifting connecting plate 917, and a pressing slider mounting plate 913 is slidably disposed on the pressing guide rail 912. A right pressing translation drive source 911 is provided at one end of the pressing guide rail 912. The right pressing translation drive source 911 is connected to a floating joint connecting plate 9191 via a pressing floating joint 919, and the floating joint connecting plate 9191 is connected to the pressing slider mounting plate 913. The pressure slider mounting plate 913 is also equipped with a right pressure plate lifting drive source 914. The right pressure plate lifting drive source 914 is used to drive the right pressure plate 915 to move up and down. The right pressure translation drive source 911 is used to drive the right pressure plate lifting drive source 914 and the right pressure plate 915 to move back and forth synchronously. The right pressure unit lifting drive source 916 is used to drive the right pressure translation drive source 911, the pressure plate lifting drive source 914 and the right pressure plate 915 to move up and down synchronously.

[0252] The core translation drive source 94, the pressing material translation drive source 903, the left pressing material translation drive source 921, the right pressing material translation drive source 911, the left pressing plate lifting drive source 923, the right pressing plate lifting drive source 914, and the right pressing unit lifting drive source 916 are all preferably cylinders. Those skilled in the art can also use a lead screw motor as a substitute.

[0253] In summary, the automatic waistband folding and interlocking device, which includes the aforementioned upper folding mechanism 1, lower folding mechanism 2, upper folding feeding mechanism 8, and pressing cavity moving mechanism 9, involves multiple steps in the folding and interlocking process when folding the upper fabric piece 6 and lower fabric piece 7 of the waistband. These steps include feeding, folding, pre-fastening, interlocking, pressing, cavity moving, and resetting. The specific folding and interlocking process is as follows:

[0254] 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 feeding height. At this time, the distance between the upper cavity and the lower cavity is a preset distance, specifically 30mm. All push plates, tongue plates, baffle blocks, upper edge expanding rods 464, and clamping jaws 473 in the upper and lower folding units are outside the folding area. The piston rod of the cylinder of the upper clamp lifting drive source 477 is extended, and the clamping jaws 473 are open. The lower jaws 474 and the upper jaws 475 are symmetrical about the upper surface of the upper straight edge push plate 424. The piston rods of the cylinders of the first upper folding avoidance drive source 83 and the second upper folding avoidance drive source 85 are both extended. The piston rod of the cylinder of the upper folding feeding drive source 82 is retracted. The upper folding feeding plate 88 is located between the upper cavity and the lower cavity, and the distance between them is the same. The piston rods of the cylinders of the core translation drive source 94 and the pressure plate translation drive source 903 are both in the retracted state, and the folded core 901 is located in the lower cavity. The pressure plate is located at the furthest point from the folded core 901.

[0255] Feeding: The lower fabric piece 7 is manually placed on the folding core 901, and the upper fabric piece 6 is placed on the upper folding feed plate 88, so that the feed needle 89 pierces the upper fabric piece 6. The trouser fly is placed on the lower gripper 474. The piston rod of the cylinder of the upper folding feed drive source 82 extends, driving the upper folding feed plate 88 to move upward, feeding the upper fabric piece 6 into the upper cavity, and the upper cavity assembly 43 removes the upper fabric piece 6. Then the piston rod of the cylinder of the upper folding feed drive source 82 retracts, driving the upper folding feed plate 88 to move downward, separating the upper fabric piece 6 from the feed needle 89. The piston rods of the cylinders of the first upper folding avoidance drive source 83 and the second upper folding avoidance drive source 85 both retract, driving the upper folding feed plate 88 away from the upper cavity assembly 43. The piston rod of the cylinder of the upper fabric block drive source 451 extends, driving the upper fabric block 452 to move downward. The upper fabric block 452 passes through the upper cavity, causing the upper fabric piece to bend downward against the fastening edge 61.

[0256] The specific process of the upper cavity assembly 43 removing the upper fabric piece 6 is as follows:

[0257] When the upper cavity assembly 43 adopts the structure of Embodiment 1, the negative pressure mechanism works, and the upper fabric sheet 6 is adsorbed and fixed in the upper cavity due to the negative pressure.

[0258] When the upper cavity assembly 43 adopts the structure of Embodiment 2, the needle driving source 437 drives the needle 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 cloth piece 6, thus completing the fixing of the upper cloth piece 6.

[0259] 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.

[0260] 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 upper fabric non-buttoned edges 62 inward into the upper cavity. Then the clamping jaws 473 close, and the upper jaws 475 and lower jaws 474 clamp the trouser placket, so that the trouser placket is close to the bottom of the upper fabric non-buttoned edge 62 adjacent to the upper fabric buttoned edge non-buttoned side 611. The piston rod of the cylinder of the upper buttoned edge push plate drive source 413 extends, driving the upper buttoned edge push plate 412 to move towards the upper cavity, folding the upper fabric buttoned edge non-buttoned side 611 inward into the upper cavity. The upper edge lifting drive source 417 drives its lead screw to rotate, causing the upper edge lifting bracket 415 to move to the set pre-folding height. Then, the cylinder piston rod of the upper edge tongue drive source 414 extends, driving the upper edge tongue 411 to move horizontally towards the upper cavity, pre-folding the upper fabric piece's fastening edge 612 inward into the upper cavity. The cylinder piston rods of the first upper edge expanding rod drive source 463 and the second upper edge expanding rod drive source 465 both extend, driving the upper edge expanding rod 464 into the gap formed by the folded upper fabric piece's fastening edge 612, shaping the gap to a predetermined state. The cylinder piston rods of the first upper edge expanding rod drive source 463 and the second upper edge expanding rod drive source 465 both retract, and the upper edge expanding rod 464 returns to its original position.

[0261] 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 first non-fastening edge 71 of the lower fabric piece to bend upward. The piston rods of the cylinders of the lower side lifting drive source 524 and the lower side limiting drive source 527 both extend, 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 translate downward into the lower cavity, with the lower side push plate 525 entering the lower cavity; simultaneously, the piston rod of the cylinder of the lower side limiting drive source 527 restricts the stroke of the lower side tongue plate 526, causing the lower side tongue plate 526 to partially enter the lower cavity, folding the first non-fastening edge 71 of the lower fabric piece inward into the lower cavity. The folding states of the upper fabric piece 6 and the lower fabric piece 7 are as follows. Figure 24 As shown.

[0262] The folding actions of the aforementioned upper and lower folding units can be performed simultaneously.

[0263] 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 25 As shown.

[0264] 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:

[0265] 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.

[0266] 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.

[0267] At this point, the folding and interlocking of the waistband is complete, as follows: Figure 26 As shown.

[0268] 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 901. The trouser placket is located between the non-button edge 62 of the upper fabric piece and the second non-button edge 73 of the lower fabric piece. Subsequently, the upper cavity assembly 43 releases its fixation on the upper fabric piece 6, and the piston rods of the cylinders of the lower edge guide drive source 534, the upper edge tongue 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 drive source 521, the lower side push plate drive source 522, the lower side limit drive source 527, 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, while 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 clamp jaws 473 open, the piston rod of the cylinder of the upper clamp translation drive source 471 extends, and the piston rod of the cylinder of the upper clamp lifting drive source 477 retracts, driving the upper jaws 475 and lower jaws 474 to completely separate from the trouser placket. The third lifting drive source 113 resets, and simultaneously, the upper and lower fastening lifting drive sources 417 and 533 reset. Then, the pressure plate presses down on the waistband of the folding core 901. The piston rods of the cylinders of the lifting drive source 431 and the first lifting drive source 31 both retract, at which point the pressing action is completed.

[0269] Cavity material transfer: The piston rod of the cylinder of the core translation drive source 94 extends, driving the pressure material moving base plate 83 to move forward, away from the lower cavity plate 51. The folded core 901 and left pressure plate 924 on the left, and the folded core 901 and right pressure plate 915 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 903 extends, driving the pressure material telescopic base plate 904 to move to the right. That is, the folded core 901 and left pressure plate 924 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 awaits material retrieval by the material retrieval mechanism.

[0270] Reset: After the material handling mechanism completes material handling, the pressure plate resets, the piston rod of the cylinder of the pressure material translation drive source 903 retracts, and then the piston rod of the cylinder of the core translation drive source 94 retracts, folding the core 901 and placing it in the lower cavity. The piston rods of the cylinders of the first lifting drive source 31 and the second lifting drive source 111 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. The piston rod of the cylinder of the upper clamp translation drive source 471 retracts, the piston rod of the cylinder of the upper clamp lifting drive source 477 extends, and the clamp jaws 473 are in the loading position.

[0271] In summary, the automatic folding and interlocking waistband device provided by the present invention has the following advantages:

[0272] 1. The upper cavity uses needle punching / or negative pressure adsorption, and the lower cavity uses negative pressure adsorption to fix the fabric, which solves the problem of unstable fabric posture during folding;

[0273] 2. The height of the upper and lower fastening tongue plates and the lower fastening push plate are controlled by a lead screw motor, which makes it easier to adjust. At the same time, it can ensure the stability of the fastening edge of the fabric pieces during the interlocking process of the upper and lower fabric pieces, and improve the success rate of interlocking.

[0274] 3. An upper edge expansion component is set up to ensure that the upper fabric piece is 100% stable in the ideal posture after pre-folding and the fastening edge is aligned.

[0275] 4. An upper clamp assembly is provided to ensure the accurate relative position of the trouser fly to the waistband during folding.

[0276] 5. An upper folding feeding mechanism is set up. The feeding needle can ensure that the upper fabric piece will not shift before entering the upper cavity, and at the same time greatly reduces the difficulty of feeding the upper cavity.

[0277] 6. A pressing cavity moving mechanism is set up, which eliminates the impact of the gap of the lower table on the material transfer accuracy by moving the waistband driven by the folding core;

[0278] 7. It can simultaneously fold and interlock the two waistbands on the pants, greatly improving the production efficiency of the pants.

[0279] This invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0280] 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. An automatic folding and interlocking device for waistbands, used for folding the upper fabric piece (6) and the lower fabric piece (7) of the waistband, characterized in that, It includes an upper folding mechanism (1), a lower folding mechanism (2), and an upper folding feeding mechanism (8); The upper folding mechanism (1) includes an upper folding unit, which includes a floating mounting plate (114) that can move up and down. The floating mounting plate (114) is equipped with an upper edge-fastening pusher assembly (41), an upper straight edge pusher assembly (42), an upper cavity assembly (43), an upper fixed pusher assembly (44), an upper cavity baffle assembly (45), an upper edge-expanding assembly (46), and an upper clamping assembly (47). The upper cavity assembly (43) includes an upper cavity plate (433) installed below the floating mounting plate (114). The bottom of the upper cavity plate (433) is provided with a... The upper cavity accommodates the upper fabric piece (6), which is detachably installed in the upper cavity; the upper cavity baffle assembly (45) and the upper edge pusher assembly (41) are used to fold the upper fabric piece's snap-on edges (61); the upper straight edge pusher assembly (42) and the upper fixed pusher assembly (44) are used to fold the upper fabric piece's non-snap-on edges (62); the upper edge expansion assembly (46) is used to shape the seam formed by folding the upper fabric piece's snap-on edges (61); the upper clamp assembly (47) is used to place the trouser fly between the upper fabric piece (6) and the lower fabric piece (7); The lower folding mechanism (2) includes a lower folding unit, which is 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 first non-button-on edge (71) of the lower fabric piece. The lower snap-on push plate assembly (53) is used to fold the button-on edge (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 buckle push plate assembly (41) includes an upper buckle push plate drive source (413), an upper buckle push plate (412) connected to the upper buckle push plate drive source (413), an upper buckle lifting drive source (417), an upper buckle guide drive source (416) connected to the upper buckle lifting drive source (417), an upper buckle tongue plate drive source (414) connected to the upper buckle guide drive source (416), and an upper buckle tongue plate (411) connected to the upper buckle tongue plate drive source (414). 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 drive source and a push plate that is connected to the push plate drive source in a transmission manner. 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 upper edge expansion assembly (46) includes an upper edge expansion rod (464), an upper edge expansion rod first drive source (463) for driving the upper edge expansion rod (464) to approach or move away from the upper cavity assembly (43), and an upper edge expansion rod second drive source (465) for driving the upper edge expansion rod (464) to translate along the extension direction of the gap. The upper clamp assembly (47) includes a clamp jaw (473), an upper clamp translation drive source (471) for driving the clamp jaw (473) to translate, and an upper clamp lifting drive source (477) for driving the clamp jaw (473) to move up and down. The lower side push plate assembly (52) includes a lower side limiting drive source (527), 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 synchronously up and down 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 side limiting drive source (527) is disposed between the lower side tongue plate (526) and the lower cavity, and is used to limit the stroke of the lower side tongue plate (526). The lower edge push plate assembly (53) includes a lower edge lifting drive source (533), a lower edge guide drive source (534) connected to the lower edge lifting drive source (533), a lower edge push plate drive source (531) connected to the lower edge guide drive source (534), and a lower edge push plate (535) connected to the lower edge push plate drive source (531). The upper folding feeding mechanism (8) includes an upper folding feeding unit disposed below the upper cavity assembly (43). The upper folding feeding unit includes an avoidance driving assembly, an upper folding feeding driving source (82) connected to the avoidance driving assembly, and an upper folding feeding plate (88) connected to the upper folding feeding driving source (82). The top of the upper folding feeding plate (88) is provided with a plurality of feeding needles (89). The avoidance driving assembly is used to drive the upper folding feeding driving source (82) and the upper folding feeding plate (88) to simultaneously approach or move away from the upper cavity assembly (43). The upper folding feeding driving source (82) is used to drive the upper folding feeding plate (88) to enter or exit the upper cavity.

2. The automatic folding and interlocking device for trouser waistbands according to claim 1, characterized in that, The upper cavity assembly (43) further includes a needle-punching drive source (437) and a needle-punching block (432) that moves up and down under the drive of the needle-punching drive source (437). The lower end of the needle-punching block (432) is provided with a fixing needle (4321), which passes through the upper cavity plate (433). When the needle-punching drive source (437) drives the needle-punching block (432) to move down, the fixing needle (4321) enters the upper cavity and needles the upper fabric piece (6) to fix it.

3. The automatic folding and interlocking device for trouser waistbands according to claim 2, 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).

4. The automatic folding and interlocking device for trouser waistbands according to claim 1, characterized in that, The upper cavity is connected to the negative pressure mechanism and is used to perform negative pressure adsorption and fixation on the upper fabric piece (6).

5. The automatic folding and interlocking device for trouser waistbands according to claim 1, characterized in that, The upper cavity assembly (43) also includes a lifting drive source (431) that is connected to the floating mounting plate (114). The upper cavity plate (433) has a through hole (4332) that communicates 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).

6. The automatic folding and interlocking device for trouser waistbands according to claim 1, characterized in that, The avoidance drive assembly includes a first upper folding avoidance drive source (83) for driving the upper folding feeding drive source (82) and the upper folding feeding plate (88) to move up and down simultaneously, and a second upper folding avoidance drive source (85) for driving the first upper folding avoidance drive source (83), the upper folding feeding drive source (82) and the upper folding feeding plate (88) to translate simultaneously.

7. The automatic folding and interlocking device for trouser waistbands according to claim 1, characterized in that, It also includes a pressing cavity moving mechanism (9), which includes a core translation drive source (94), a pressing moving base plate (93) connected to the core translation drive source (94), a folding core unit disposed on the pressing moving base plate (93), and a pressing unit connected to the pressing moving base plate (93). The core translation drive source (94) is used to drive the pressing moving base plate (93) to move closer to or away from the lower cavity plate (51). The folding core unit includes a folding core (901) mounted on the pressing moving base plate (93), and the folding core (901) 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, which can move closer to or away from the folding core (901).

8. The automatic folding and interlocking device for trouser waistbands according to claim 7, characterized in that, The number of folding core units and pressing units are both two, including a lower left folding core unit (92) and a lower right folding core unit (91) disposed on the pressing moving base plate (93), a left pressing unit (920) disposed above the lower left folding core unit (92), and a right pressing unit (910) disposed above the lower right folding core unit (91); the lower left folding core unit (92) also includes a pressing translation drive source (903) disposed on the pressing moving base plate (93), and a pressing telescopic base plate (904) slidably disposed on the pressing moving base plate (93). The folding cores (901) of the left pressing unit (920) and the lower left folding core unit (92) are both disposed on the pressing telescopic base plate (904). The pressing telescopic base plate (904) moves closer to or away from the lower right folding core unit (91) under the drive of the pressing translation drive source (903).

9. The automatic folding and interlocking device for trouser waistbands according to claim 1, characterized in that, The upper folding mechanism (1) includes two upper folding units, the lower folding mechanism (2) includes two lower folding units, and the upper folding feeding mechanism (8) includes two upper folding feeding units.

10. A method for automatically folding and interlocking waistbands, characterized in that, Using the automatic folding and interlocking device for trouser waistbands as described in any one of claims 1-9, the method for automatic folding and interlocking of trouser waistbands includes the following steps: Feeding: The lower fabric piece (7) is placed in the lower cavity, the upper fabric piece (6) is placed on the upper folding feed plate (88), and the trouser placket is placed on the clamping jaws (473); the upper folding feed drive source (82) drives the upper folding feed plate (88) to move upward, feeding the upper fabric piece (6) into the upper cavity; the upper cavity assembly (43) removes the upper fabric piece (6); the upper folding feed drive source (82) drives the upper folding feed plate (88) to move downward, feeding the upper fabric piece (6) into the upper cavity; the upper cavity assembly (43) removes the upper fabric piece (6); the upper folding feed drive source (82) drives the upper folding feed plate (88) to move downward, feeding the upper fabric piece (6) into the upper cavity. 6) Separated from the feeding needle (89), the avoidance drive assembly drives the upper folding feeding plate (88) away from the upper cavity assembly (43); the baffle block drive source of the upper cavity baffle assembly (45) drives its baffle block to move downward, the baffle block passes through the upper cavity, causing the upper fabric piece to bend downward at the fastening edge (61); the lower fabric piece (7) is adsorbed and fixed in the lower cavity due to negative pressure, and the lower side push plate assembly (52) drives the lower side tongue plate (526) to press on the lower fabric piece (7); The upper folding unit folds: the push plate drive sources of the upper straight edge push plate assembly (42) and the upper fixed push plate assembly (44) drive the push plates of both to translate towards the upper cavity, folding the non-buttoned edge (62) of the upper fabric piece inward; the clamping jaws (473) close and clamp the trouser placket, so that the trouser placket is close to the bottom of the non-buttoned edge (62) of the upper fabric piece; the upper buttoning edge push plate drive source (413) drives the upper buttoning edge push plate (412) to translate towards the upper cavity, folding the non-buttoned side (611) of the upper fabric piece towards the buttoning edge. Fold inward; the upper edge lifting drive source (417) drives the upper edge tongue drive source (414) to move to the pre-folding height, the upper edge tongue drive source (414) drives the upper edge tongue (411) to move towards the upper cavity, and pre-folds the upper fabric piece fastening edge fastening side (612) inward; the upper edge expanding assembly (46) drives the upper edge expanding rod (464) into the gap to shape the shape of the gap, and then the upper edge expanding assembly (46) drives the upper edge expanding rod (464) to reset; The lower folding unit folds: the push plate drive source of the lower straight edge push plate assembly (54) drives its push plate to press on the lower fabric piece (7), and the lower side push plate assembly (52) drives the lower side tongue plate (526) to exit the lower cavity; the baffle block drive source of the lower cavity baffle assembly (55) drives its baffle block to move upward, and the baffle block passes through the lower cavity, causing the first non-buttoning edge (71) of the lower fabric piece to bend upward; the lower side lifting drive source (524) drives the lower side tongue plate drive source (521) and The lower side push plate drive source (522) moves upward, and the lower side tongue plate drive source (521) and the lower side push plate drive source (522) drive the lower side tongue plate (526) and the lower side push plate (525) to translate towards the lower cavity respectively. The lower side push plate (525) enters the lower cavity, and at the same time, the lower side limiting drive source (527) restricts the stroke of the lower side tongue plate (526), ​​so that the lower side tongue plate (526) partially enters the lower cavity, and folds the first non-buttoning edge (71) of the lower fabric piece inward. Pre-fastening: The floating mounting plate (114) moves down to the pre-fastening height, the lower fastening edge lifting drive source (533) drives the lower fastening edge push plate (535) to move to the pre-folding height, the lower fastening edge push plate drive source (531) drives the lower fastening edge push plate (535) to move towards the lower cavity, inserting the lower fabric piece fastening edge (72) into the gap, so that the lower fabric piece fastening edge (72) and the upper fabric piece fastening edge fastening side (612) are pre-fastened; Interlocking: The floating mounting plate (114) moves upward to the joining height; during the upward movement of the floating mounting plate (114), the upper snap-on lifting drive source (417) drives the upper snap-on tongue plate (411) to move to the same height as the upper snap-on push plate (412), and the upper snap-on guide drive source (416) drives the upper snap-on tongue plate (411) to fully enter the upper cavity; at the same time, the lower snap-on lifting drive source (533) drives the lower snap-on push plate (535) to move to the same height as the lower straight push plate (541), and the lower snap-on guide drive source (534) drives the lower snap-on push plate (535) to fully enter the lower cavity.

Images