Automatic turnover device for sewing front fly of trousers

Abstract

The invention discloses an automatic turnover device for sewing a top fly of trousers, and relates to the technical field of garment sewing, a bottom fly placing mechanism, a zipper placing mechanism and a bodice placing mechanism are sequentially arranged from bottom to top, and a bottom fly bottom plate is provided with a bottom fly sewing slot for avoiding a sewing thread; zipper pieces are placed on the zipper placing plate, a left body and a right body are sequentially placed on the body supporting plate, and a right folding piece on the right body is folded and attached to the upper portion of the right body through translation of the overturning left-right strip, so that the right body is avoided, and a first sewing thread is avoided. The left and right blocking pieces are turned over to horizontally move, so that the right folding piece is flatly spread rightwards, and the zipper placing mechanism horizontally moves to pull the bottom lappet to be turned over, so that a second sewing thread is sewn; the clamping piece strip drives the right bodice to be folded to the position above the flattened right folding piece so that a third sewing thread can be sewn, and the appearance structure of the front fly is formed. According to the device, automatic top fly sewing is achieved through the folding action, and manual participation in the top fly sewing process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing sewing, and further relates to an automatic turning device for sewing trouser plackets. Background Art

[0002] Pants are a type of clothing that typically features a placket. A placket generally refers to the front portion of a garment used for opening and closing, including buttons, zippers, and other closures. On pants, the placket typically refers to the front portion used for putting on and taking off the pants.

[0003] Zipper placket is the most common type of trouser placket. It uses a zipper to open and close the trousers. The advantage is that it is convenient and fast. The zipper closes tightly and can well maintain the appearance of the trousers.

[0004] The sewing process of the zipper located at the placket of the pants is relatively complicated. The pants pieces need to be folded frequently, and the position of the pieces needs to be adjusted according to the position of the zipper to form a beautiful seam.

[0005] Currently, there is no automatic placket sewing equipment on the market. Existing equipment is still entirely hand-sewn, requiring high skill levels, numerous and complex processes, extremely low efficiency, and heavy reliance on skilled labor, resulting in high manufacturing costs. Alternatively, traditional template machines use manually folded template molds to achieve semi-automatic sewing of plackets. However, traditional template-based placket sewing is inefficient, requiring multiple manual flips and unloading of the template, and the molds lack versatility.

[0006] For those skilled in the art, how to realize automatic folding of trouser plackets for sewing is a technical problem that needs to be solved at present. Summary of the Invention

[0007] The core of the present invention is to provide an automatic turning device for sewing trouser plackets, which can automatically realize the folding operation of the bottom placket, zipper piece, left body and right body during the placket sewing process, thereby realizing automatic placket sewing and reducing manual participation in the placket sewing process. The specific scheme is as follows:

[0008] A trouser placket sewing automatic turning device includes the following parts arranged in sequence from bottom to top:

[0009] The bottom lapel placement mechanism includes a bottom lapel bottom plate, the bottom lapel bottom plate is used to place the bottom lapel piece, and the bottom lapel sewing slots for avoiding stitches are arranged on the bottom lapel bottom plate;

[0010] The zipper placement mechanism includes a zipper placement plate for placing the zipper piece and capable of translating in a first direction for folding the bottom flap before sewing the second seam; the zipper placement plate is provided with a zipper sewing slot for avoiding the seam;

[0011] The trunk placement mechanism includes a trunk support plate, left and right flip bars, left and right flip baffles, and a clip bar; the trunk support plate is used to support the stacked left and right trunks;

[0012] The flip left and right strips are used to translate to fold the right fold on the right main body to above the right main body to avoid the first seam; the flip left and right blocking pieces are used to press above the right main body to form the fold line of the right fold, and can translate to flatten the right fold for sewing the second seam; the clamping strip is used to drive the right main body to fold to above the flattened right fold for sewing the third seam.

[0013] Optionally, the clip strip includes an upper clip strip and a lower clip strip, one end of the upper clip strip and the lower clip strip are relatively fixed, and the other ends are separated from each other and used to place the right torso.

[0014] Optionally, the upper clamping bar and the lower clamping bar are stacked up and down, and a magnet for magnetic attraction to enhance the clamping force is provided between the upper clamping bar and the lower clamping bar.

[0015] Optionally, the flipped left and right baffles include a left baffle and a right baffle spaced apart from each other in the first direction, one end of the left baffle and one end of the right baffle are relatively fixed, and the space between the two is used to avoid the second stitching line;

[0016] The left side of the left baffle is used to form a folding position for folding the right body.

[0017] Optionally, the trunk placement mechanism further comprises a folding piece located below the trunk support plate, the folding piece being configured to translate along the first direction to fold the left folding piece of the left trunk and fit it below the trunk support plate;

[0018] A horsetail lining is provided on the right edge of the main body support plate, which is used to form a fold after the left folding piece is folded and to provide for sewing the first seam.

[0019] Optionally, the trunk placement mechanism further includes a rotating pressing plate, which is hinged to the trunk support plate and can be pressed on the upper surface of the left trunk to achieve fixation.

[0020] Optionally, the main body support plate is provided with a negative pressure suction device for adsorbing and fixing the left main body.

[0021] Optionally, the zipper placement mechanism includes a zipper mounting plate, and the zipper placement plate is installed on the zipper mounting plate in a translational manner along the first direction;

[0022] A zipper lifting mechanism is provided between the zipper mounting plate and the bottom placket bottom plate, and the zipper lifting mechanism is used for driving the zipper mounting plate to move up and down.

[0023] Optionally, a body lifting mechanism is provided between the body supporting plate and the zipper mounting plate, and the body lifting mechanism is used for driving the body supporting plate to move up and down.

[0024] Optionally, an air locking mechanism is provided on the bottom plate of the bottom flap, and the air locking mechanism is installed on the pressing frame assembly of the template machine.

[0025] The invention relates to an automatic flipping device for sewing trouser plackets. The bottom placket placement mechanism, the zipper placement mechanism, and the body placement mechanism are sequentially arranged from bottom to top. The bottom placket piece is placed on the bottom placket bottom plate, and the bottom placket sewing slot for avoiding stitching is provided on the bottom placket bottom plate; the zipper piece is placed on the zipper placement plate, and the left body and the right body are sequentially placed on the body support plate. Before sewing the first stitching line, the left and right flipping strips are translated to fold the right folded piece on the right body and fit it above the right body, avoiding the right body to avoid the first stitching line, and the left body, zipper, and backing are sewn together; the left and right flipping baffles are translated to flatten the right folded piece to the right, and the zipper placement mechanism is translated to pull the bottom placket to form a fold for sewing the second stitching line, and the right body and the zipper are sewn and fixed together; the clamping strip drives the right body to be folded above the flattened right folded piece, so as to sew the third stitching line, and the right body and the right folded piece are sewn and fixed together, thereby forming the appearance structure of the placket. The device realizes automatic placket sewing through folding action, reducing manual participation in the placket sewing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is an axonometric diagram of placing a bottom placket, a zipper piece, a left body part, and a right body part on the automatic turning device for sewing a trouser placket of the present invention;

[0028] Figure 2 This is an axonometric diagram of the automatic turning device for sewing trouser plackets of the present invention;

[0029] Figure 3A This is an axonometric diagram of the bottom lapel placement mechanism;

[0030] Figure 3B This is an axonometric diagram of placing the bottom flap piece on the bottom flap base;

[0031] Figure 4AThis is an axonometric diagram of the zipper placement mechanism;

[0032] Figure 4B This is an axonometric diagram of placing the zipper piece on the zipper placement plate;

[0033] Figure 5A This is an axonometric diagram of the body placement mechanism;

[0034] Figure 5B This is an axonometric diagram of the left main body being placed on the main body placement mechanism;

[0035] Figure 5C For Figure 5B Axonometric diagram of the right main body placed on the foundation;

[0036] Figure 6 This is an axonometric diagram of the main body support plate;

[0037] Figure 7 This is an axonometric diagram of the flipped left and right bars;

[0038] Figure 8 This is an axonometric diagram of flipping the left and right baffles;

[0039] Figure 9A This is an axonometric diagram of the clip strip;

[0040] Figure 9B This is an axonometric diagram of the cooperation between the lower clamping bar and the magnet;

[0041] Figure 10 This is an axonometric diagram of the folding piece;

[0042] Figure 11 is an axonometric diagram of the rotating pressure plate;

[0043] Figure 12 This is an axonometric diagram of setting a left fold on the left body;

[0044] Figure 13 Axonometric diagram of setting the right fold on the right torso.

[0045] The diagram includes:

[0046] Bottom placket placement mechanism 10, bottom placket base plate 110, bottom placket sewing slots 111, air lock mechanism 120;

[0047] Zipper placement mechanism 20, zipper placement plate 210, zipper sewing slot 211, zipper installation plate 220, zipper lifting mechanism 230;

[0048] The trunk placement mechanism 30, the trunk support plate 310, the flip left and right bars 320, the flip left and right blocking pieces 330, the left blocking piece 331, the right blocking piece 332, the clamping strip 340, the upper clamping strip 341, the lower clamping strip 342, the magnet 343, the folding piece 350, the folding hook 351, the rotating pressure plate 360, and the trunk lifting mechanism 370;

[0049] Bottom flap 410 , zipper 420 , left body 430 , left folding piece 431 , right body 440 , right folding piece 441 . DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the technical solution of the present invention, the automatic turning device for sewing trouser plackets of the present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0051] The automatic turning device for sewing trouser plackets of the present invention is applied in the trouser sewing process to realize the sewing of trouser plackets.

[0052] The placket of the pants needs to be sewn using four parts: the bottom placket 410, the zipper piece 420, the left body 430, and the right body 440. The bottom placket 410, the zipper piece 420, the left body 430, and the right body 440 are pre-processed into the required shape and size. Figure 3B As shown in FIG. 4 , the shape of the zipper piece 420 is as follows Figure 4B In the middle display, the shape of the left body 430 is as follows Figure 12 In the middle display, the shape of the right body 440 is as follows Figure 13 According to different trouser designs, the specific structures of the bottom flap 410, zipper piece 420, left body 430, and right body 440 can be adjusted accordingly. The drawings of the present invention only show one specific appearance.

[0053] It should be stated that the left and right directions of this application are only based on the state shown in the accompanying drawings as an example. The left and right directions can also be reversed, that is, the structures shown in the accompanying drawings are arranged in left and right mirror symmetry. These obvious forms are also within the scope of this application.

[0054] Combine Figure 1 、 Figure 2 As shown, the automatic reversing device for sewing trouser plackets provided by the present invention includes a bottom placket placement mechanism 10, a zipper placement mechanism 20, and a body placement mechanism 30. The bottom placket placement mechanism 10, the zipper placement mechanism 20, and the body placement mechanism 30 are arranged in layers from bottom to top. The bottom placket placement mechanism 10 is located at the bottom layer, the zipper placement mechanism 20 is located in the middle layer, and the body placement mechanism 30 is located at the top layer.

[0055] Combine Figure 3A 、 Figure 3BAs shown, the bottom lapel placement mechanism 10 includes a bottom lapel base plate 110, which is used to place the bottom lapel piece 410 and provide support for the bottom lapel piece 410. The bottom lapel base plate 110 is provided with a bottom lapel sewing slot 111 for avoiding stitches. When sewing, three stitches need to be sewn, and the bottom lapel sewing slot 111 can be used to avoid the three stitches respectively, forming a gap when sewing the three stitches. Similarly, in the gap avoidance structure mentioned later, it is not only used to avoid one stitch.

[0056] The bottom plate 110 adopts a flat plate structure to provide stable support, and the bottom plate 110 is punched to form a bottom plate sewing slot 111. Figure 3A 、 Figure 3B As shown, the bottom lapel sewing slot 111 includes three gaps (①②③), which are used for three stitches to avoid gaps.

[0057] It should also be noted that in the structure shown in the drawings of this application, the size of the bottom plate 110 is larger than the size of the trunk support plate 310. When the left and right trunks 430, 440 are placed, the bottom plate 110 also provides some support for the portions of the left and right trunks 430, 440 that extend beyond the trunk placement mechanism 30. The sizes of the bottom plate 110 and the trunk support plate 310 can be varied and are not limited to the relative sizes shown in the drawings.

[0058] Combine Figure 4A 、 Figure 4B As shown, the zipper placement mechanism 20 includes a zipper placement plate 210, which is used to place the zipper piece 420 and can be translated along the first direction. Figure 1 、 Figure 2 As shown, the first direction is the X-axis direction, that is, the zipper placement plate 210 can move translationally along the X-axis direction.

[0059] The zipper placement plate 210 is a flat plate-shaped structure. The zipper placement plate 210 is provided with a zipper sewing slot 211 for avoiding stitching. The zipper sewing slot 211 can form an airtight space when the corresponding stitching is sewn. The zipper placement plate 210 is used to fold the bottom flap 410 before sewing the second stitching. Specifically, the zipper placement plate 210 is located below the zipper piece 420 and above the bottom flap 410. After the first stitching is sewn, the left body 430, the zipper piece 420, and the bottom flap 410 are sewn and fixed relative to each other. Then, the zipper placement plate 210 is translated along the first direction (negative direction of the X-axis) to fold the bottom flap 410 to the left. After the bottom flap 410 is folded, it is away from the sewing position and is not involved in the sewing of the bottom flap 410 in the subsequent sewing process.

[0060] Combine Figure 5A 、 Figure 5B 、 Figure 5CAs shown, the trunk placement mechanism 30 includes a trunk support plate 310, a flip left and right bar 320, a flip left and right baffle 330 and a clamping bar 340; the lower surface of the flip left and right bar 320 should be higher than the upper surface of the flip left and right baffle 330 to ensure that the flip left and right bar 320 can move to the top of the flip left and right baffle 330. Figure 6 As shown, the trunk support plate 310 is a flat plate structure, and the trunk support plate 310 is used to support the stacked left trunk 430 and the right trunk 440, as shown in FIG. Figure 5B As shown, the left torso 430 is placed on the torso support plate 310 first, and then the right torso 440 is placed on the torso support plate 310 , with the right torso 440 pressing on top of the left torso 430 .

[0061] like Figure 5B As shown, the left main body 430 is placed on the upper surface of the main body support plate 310 , and the flip left and right bars 320 , flip left and right blocking pieces 330 , clipping strips 340 and the subsequent rotating pressing plate 360 ​​are all located above the left main body 430 .

[0062] like Figure 5C As shown, the right body 440 is placed on the upper surface of the left body 430, the flipped left and right blocking pieces 330 are located above the right body 440, the clamping strips 340 clamp the right body 440, and the rotating pressure plate 360 ​​involved later is located below the right body 440. The flipped left and right strips 320 are located below the right folding piece 441 and above other positions of the right body 440.

[0063] It should be noted that the left body 430 and the right body 440 of this application refer to the directions shown in the drawings, and do not represent the left and right directions when actually worn. Figure 5C Taking the orientation shown as an example, the left torso 430 is positioned below the right torso 440. Initially, the left torso 430 and the right torso 440 overlap. During the subsequent sewing process, the upper right torso 440 needs to be flattened to the right, while the position of the left torso 430 remains fixed. The left and right positions are distinguished by the state in which the left torso 430 and the right torso 440 are separated and unfolded.

[0064] Combine Figure 13 As shown, a right folding piece 441 is provided at the right edge of the right main body 440. The right folding piece 441 can be folded relative to other positions of the right main body 440. The right folding piece 441 is folded to overlap with the right main body 440 in order to avoid the first stitching line.

[0065] Combine Figure 1 and Figure 5C As shown, when the right body 440 is placed in place, the left and right strips 320 are flipped and located below the right flap 441 and above other positions of the right body 440. Before sewing the first seam, the left and right strips 320 are flipped and moved horizontally, that is, Figure 5C Move to the left side (negative direction of the X axis), flip the left and right bars 320 to pull the right folding piece 441 from the bottom of the right folding piece 441, so that the right folding piece 441 is folded to the left and above the right main body 440. When the right folding piece 441 is folded, the right folding piece 441 is equivalent to being flipped 180 degrees around the right edge of the flipping left and right baffles 330 to form a folding line of the right folding piece 441, that is, the folding starting position between the right folding piece 441 and the right trunk 440; after the right folding piece 441 is folded, it contacts the upper surface of the flipping left and right baffles 330. At this time, the right folding piece 441 set on the edge of the right trunk 440 is folded to the top of the right trunk 440.

[0066] The right flap 441 is folded over to avoid the first seam. Once the right flap 441 is folded over the right body 440, the first seam is exposed on the left body 430 below, where the sewing equipment sews the first seam. The first seam secures the right edge of the left body 430, the left edge of the zipper 420, and the left edge of the bottom flap 410.

[0067] Combine Figure 5C As shown, the flipped left and right flap 330 is used to press against the right main body 440. During the process described above, when the flipped left and right flap 330 is in its initial position, the right edge of the flipped left and right flap 330 is located at the junction of the right folded piece 441 and the right main body 440, so that the right folded piece 441 is flipped 180 degrees around the right edge of the flipped left and right flap 330. When the flipped left and right flap 330 is translated, the right folded piece 441 is flattened to prepare for the second stitching. After being flattened, the right folded piece 441 is pressed against the zipper piece 420, and the second stitching secures the right edge of the flattened right folded piece 441 to the right side of the zipper piece 420.

[0068] After the first seam is sewn, since the right folded piece 441 is pressed on the upper surface of the flipped left and right baffles 330, the flipped left and right baffles 330 are translated to the right (positive direction of the X-axis), and the right folded piece 441 can be flipped back to the right side so that the right folded piece 441 is flattened. The right folded piece 441 is no longer stacked on top of the right main body 440. After being flattened, the right folded piece 441 is in the same plane as the right main body 440.

[0069] It should be noted that, before or at the same time as the flip left-right blocking piece 330 is moved rightward to flatten the right flap 441, the flip left-right bar 320 should be translated rightward (in the positive direction of the X-axis) to avoid obstructing the flattening of the right flap 441. The flip left-right blocking piece 330 is moved rightward to press against the right flap 441, keeping the right flap 441 flat while the second seam is sewn.

[0070] Because the clip strip 340 clamps the right torso 440, it can fold the right torso 440 over the flattened right flap 441, allowing for the third seam. The lower surface of the clip strip 340 should be higher than the upper surface of the flipped left and right flaps 330, allowing the right torso 440 to flatten and fold rightward and over the right flap 441. At this point, the right torso 440 and right flap 441 overlap again, but with the right torso 440 on top and the right flap 441 on the bottom. The third seam is used to sew the right torso 440 and right flap 441 together, forming the exterior seam of the trouser placket.

[0071] It should be noted that, among the three stitches, the sewing equipment cuts off the stitches each time a stitch is sewn to allow the next stitch to proceed normally.

[0072] As can be seen from the foregoing description, the automatic flipping device for sewing trouser plackets of the present invention automates placket sewing through a series of flipping operations, reducing manual intervention in the placket sewing process. Simply placing the bottom placket 410, zipper tab 420, left body 430, and right body 440 in designated positions is sufficient, and subsequent flipping requires no manual intervention. This greatly simplifies the placket sewing process, improving both efficiency and standardization.

[0073] On the basis of the above scheme, combined with Figure 9A 、 Figure 9B As shown, the clip strip 340 of the present invention includes an upper clip strip 341 and a lower clip strip 342. One end of the upper clip strip 341 and the lower clip strip 342 are relatively fixed to form a stacked cantilever structure. The other ends of the upper clip strip 341 and the lower clip strip 342 are separated from each other and are used to accommodate the right torso 440. The right torso 440 is inserted into the gap between the upper clip strip 341 and the lower clip strip 342, thereby driving the right torso 440 to fold and move.

[0074] Specifically, the upper and lower clamps 341, 342 of the present invention are stacked one above the other. Both the upper and lower clamps 341, 342 are plate-like structures with horizontal surfaces, forming a sandwich for placing the right torso 440. A magnet 343 is provided between the upper and lower clamps 341, 342 for magnetic attraction to enhance the clamping force. The upper and lower clamps 341, 342 are made of magnetic material. The magnet 343 is provided on one of the upper and lower clamps 341, 342; or magnets are provided on both. In this case, the upper and lower clamps 341, 342 do not need to be made of magnetic material to achieve magnetic attraction, ensuring a tight clamping force. The upper and lower clamps 341, 342 are capable of elastic deformation. When the upper and lower clamps 341, 342 are opened and separated, it is easier to insert the right torso 440. When the upper and lower clamps 341, 342 are closed, they are magnetically attracted.

[0075] In addition to being stacked up and down, the upper clamping strip 341 and the lower clamping strip 342 can also be placed side by side or diagonally, as long as they can clamp the right body 440.

[0076] Combine Figure 8 As shown, the flip left and right baffle 330 is flat and includes a left baffle 331 and a right baffle 332 spaced apart from each other in the first direction. The left baffle 331 and the right baffle 332 are spaced apart from each other, one on the left and one on the right (X-axis). One end of the left baffle 331 and the right baffle 332 is fixed and connected as a whole, while the other end is suspended. The space between the left baffle 331 and the right baffle 332 is used to provide space for a second seam. Specifically, the second seam is sewn near the left edge of the right baffle 332. During the second seam, the right baffle 332 presses against the right flap 441 to ensure a smooth fabric surface.

[0077] The left side of the left baffle 331 is used to form the crease position for folding the right main body 440, that is, before sewing the third seam, the clip strip 340 drives the right main body 440 to move to the right and flatten it, and the right main body 440 is flipped 180 degrees relative to the left edge of the left baffle 331, and the crease after the right main body 440 is folded is formed by the left edge of the left baffle 331.

[0078] Combine Figure 10 As shown, the body placement mechanism 30 also includes a folding piece 350 located below the body support plate 310. The folding piece 350 is provided with a folding hook 351. The folding hook 351 is parallel to the edge of the folding piece 350, and a U-shaped groove is formed between the folding hook 351 and the folding piece 350. The folding hook 351 is used to pull the left folding piece 431.

[0079] Combine Figure 12 As shown, the left folding piece 431 on the right side edge of the left body 430 can be folded relative to the left body 430. The folding piece 350 is used to translate along the first direction to fold the left folding piece 431 of the left body 430 and fit it under the body support plate 310; the folding piece 350 is located under the body support plate 310, combined with Figure 5B As shown, when the left torso 430 is placed, the left torso 430 is supported by the torso placement mechanism 30, and the left folding piece 431 is inserted into the U-shaped groove between the folding hook 351 and the folding piece 350. When the left folding piece 431 moves to the left, it can be folded over the torso support plate 310. The left folding piece 431 is folded 180 degrees relative to the right edge of the torso support plate 310.

[0080] Specifically, a quilt is provided on the right edge of the trunk support plate 310. The left folding piece 431 is folded relative to the quilt, forming a crease for sewing the first seam. During the first seam, the right edge of the left trunk 430, the left edge of the zipper 420, and the left edge of the bottom flap 410 are sewn together with the quilt. Once sewing is complete, the quilt can be removed, completing the relative sewing and securing of the left trunk 430, zipper 420, and bottom flap 410.

[0081] Combine Figure 5A 、 Figure 5B 、 Figure 11 As shown, the trunk placement mechanism 30 further includes a rotating pressure plate 360, which is hinged to the trunk support plate 310. In this embodiment, the left edge of the rotating pressure plate 360 ​​is hingedly engaged with the trunk support plate 310. The trunk support plate 310 can press against the upper surface of the left trunk 430 to achieve a press-fit fixation of the left trunk 430, preventing interference with the left trunk 430 when the right trunk 440 moves, and keeping the left trunk 430 always fixed.

[0082] The rotating pressing plate 360 ​​has an irregular structure for avoiding the clip strip 340 , and the rotating pressing plate 360 ​​is mainly pressed on the edge of the left body 430 .

[0083] In addition to using the rotating pressure plate 360 ​​to press the left body 430 from above, a negative pressure suction device can also be set on the body support plate 310 to provide negative pressure suction to the left body 430 for adsorbing and fixing the left body 430, which can also keep the left body 430 stationary.

[0084] Based on any of the above technical solutions and their combination, the zipper placement mechanism 20 of the present invention includes a zipper mounting plate 220, combined with Figure 4A 、 Figure 4B As shown, the zipper placement plate 210 is installed on the zipper installation plate 220 along a first direction, and the zipper placement plate 210 can translate relative to the zipper installation plate 220 along the first direction (X axis).

[0085] A zipper lifting mechanism 230 is provided between the zipper mounting plate 220 and the bottom placket base plate 110. The zipper lifting mechanism 230 is used to move the zipper mounting plate 220 up and down, thereby moving the zipper placement plate 210 closer to or further away from the bottom placket base plate 110. When sewing is required, the zipper is moved closer to the bottom placket base plate 110, and when folding is required, the zipper is moved away from the bottom placket base plate 110.

[0086] A torso lift mechanism 370 is installed between the torso support plate 310 and the zipper mounting plate 220. This mechanism is used to raise and lower the torso support plate 310, moving it closer to or away from the zipper mounting plate 210 below. When sewing is required, the torso support plate 310 is moved closer to the zipper mounting plate 210, while when folding is required, it is moved away from the zipper mounting plate 210. The zipper lift mechanism 230 and the torso lift mechanism 370 leave more space in the Z-axis during folding, ensuring smoother folding.

[0087] As shown in FIG3 , an air lock mechanism 120 is provided on the bottom flap base plate 110. This air lock mechanism 120 is mounted on the press frame assembly of the template machine. The template machine drives the bottom flap placement mechanism 10, zipper placement mechanism 20, and body placement mechanism 30 to translate along the X and Y axes, achieving translational displacement. By installing the air lock mechanism 120 on the press frame assembly of the template machine without changing the original press frame mechanism of the template machine, the template machine can quickly switch between manual and fully automatic operation.

[0088] In the initial state:

[0089] The body lifting mechanism 370 lifts the body placement mechanism 30 upward, and the zipper lifting mechanism 230 lifts the zipper placement mechanism 20 upward, and the bottom placket placement mechanism 10, the zipper placement mechanism 20, and the body placement mechanism 30 are in a separated state.

[0090] Place the bottom flap 410 (lining) onto the bottom flap base 110, and the zipper 420 onto the zipper placement plate 210. Place the left body 430 on the body support plate 310. Flip the left and right strips 320, flip the left and right blocking panels 330, and position the clip strip 340 over the left body 430. Now, press the rotating pressure plate 360 ​​downward to cover the left body 430. Tuck the left flap 431 downward into the U-shaped groove between the folding hook 351 and the folding panel 350.

[0091] At this time, place the right main body 440 on the corresponding position on the rotating pressure plate 360, flip the left and right blocking pieces 330 and place them above the right main body 440, place the right folding piece 441 of the right main body 440 on the flipped left and right strips 320, and clamp the right main body 440 in the clamping strips 340. At this time, the loading is completed.

[0092] When the device starts:

[0093] 1: Flip the left and right strips 320 to the left, folding the right folding piece 441 of the right body 440 to the left, revealing the left folding piece 431 of the left body 430. At the same time, the folding piece 350 moves to the left, folding the left folding piece 431 under the body support plate 310.

[0094] 2: At this time, the zipper lifting mechanism 230 and the body lifting mechanism 370 are extended at the same time, the bottom lapel placement mechanism 10, the zipper placement mechanism 20, and the body placement mechanism 30 are merged, and the bottom lapel piece 410, the zipper piece 420, and the left body 430 are close to each other.

[0095] 3: At this time, the template machine drives the automatic flipping device for sewing the trousers placket of the present invention to move as a whole, enters the sewing equipment, sews the first seam of the placket, and sews the bottom placket 410, the zipper piece 420, and the left body 430 together; after sewing, it drives the whole to move a certain distance to reach the specified position.

[0096] 4: At this time, the zipper lifting mechanism 230 separates the zipper placement mechanism 20 from the bottom lapel placement mechanism 10. At this time, the zipper placement plate 210 moves horizontally to the left, folding the bottom lapel piece 410 downward; the flip left and right strips 320 move to the right to the rightmost end. At this time, the flip left and right blocking pieces 330 move to the right, driving the right folding piece 441 on the right side of the right body 440 to flatten to the right.

[0097] 5: The template machine drives the entire automatic fixture to sew and sew the second line of the placket. The zipper piece 420 and the right flap 441 are sewn together. After sewing, the entire automatic fixture moves a certain distance to the designated position.

[0098] 6: At this time, the clip strip 340 moves to the right, driving the right body 440 to fold to the right. The fold line is located at the left edge of the flipped left and right baffles 330, and the placket decoration part is formed under the left edge limit of the flipped left and right baffles 330.

[0099] 7: At this time, the template machine drives the automatic flip device for sewing the trouser placket of the present invention to move as a whole, enter the sewing equipment, sew the third line of the placket, and sew the right body 440 and the right flap 441. After sewing, the whole device returns to the original position.

[0100] 8: The process is now complete, you can take out the pants, and the sewing of the pants placket is completed.

[0101] The present invention has the following advantages:

[0102] 1. Automatically sew the trouser placket by placing the fabric in the designated position one by one. This reduces manual intervention, and the same number of operators can operate more machines.

[0103] 2. Shorten the sewing time, improve the sewing efficiency of a single pair of trousers, and improve production efficiency.

[0104] 3. The operator only needs to complete the material placement and alignment process mechanically, which reduces the difficulty of operation and reduces the need for skilled workers.

[0105] 4. Through the air lock mechanism 120, it can be simply connected with the ordinary template machine to realize the conversion between manual and automatic of the ordinary template machine.

[0106] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic turning device for sewing trouser plackets, characterized in that: Including the following settings from bottom to top: A bottom lapel placement mechanism (10) comprises a bottom lapel base plate (110), wherein the bottom lapel base plate (110) is used to place a bottom lapel piece (410), and a bottom lapel sewing slot (111) for avoiding stitches is provided on the bottom lapel base plate (110); A zipper placement mechanism (20) comprising a zipper placement plate (210), the zipper placement plate (210) being used to place a zipper piece (420) and being capable of translating in a first direction and being used to fold the bottom flap piece (410) before sewing a second seam; the zipper placement plate (210) being provided with a zipper sewing slot (211) for avoiding the seam; A torso placement mechanism (30) comprises a torso support plate (310), left and right flip bars (320), left and right flip baffles (330), and a clip bar (340); the torso support plate (310) is used to support the stacked left torso (430) and right torso (440); The flip left and right strips (320) are used for translation to fold the right folding piece (441) on the right main body (440) to the top of the right main body (440) to avoid the first stitching line; the flip left and right blocking pieces (330) are used to press on the top of the right main body (440) to form the folding line of the right folding piece (441), and can be translated to flatten the right folding piece (441) to sew the second stitching line; the clamping strip (340) is used to drive the right main body (440) to fold to the top of the flattened right folding piece (441) to sew the third stitching line.

2. The automatic turning device for sewing trouser plackets according to claim 1, characterized in that: The clip strip (340) comprises an upper clip strip (341) and a lower clip strip (342), one end of the upper clip strip (341) and the lower clip strip (342) being relatively fixed, and the other ends being separated from each other and used to accommodate the right body (440).

3. The automatic turning device for sewing trouser plackets according to claim 2, characterized in that: The upper clamping strip (341) and the lower clamping strip (342) are stacked up and down, and a magnet (343) for magnetic attraction to enhance the clamping force is provided between the upper clamping strip (341) and the lower clamping strip (342).

4. The automatic turning device for sewing trouser plackets according to claim 1, characterized in that: The flip left and right baffles (330) include a left baffle (331) and a right baffle (332) spaced apart from each other in the first direction, one end of the left baffle (331) and the right baffle (332) being relatively fixed, and the space between the two is used to avoid a second stitching line; The left side of the left baffle (331) is used to form a folding position for folding the right body (440).

5. The automatic turning device for sewing trouser plackets according to claim 1, characterized in that: The trunk placement mechanism (30) further comprises a folding piece (350) located below the trunk support plate (310), the folding piece (350) being used to translate along the first direction to fold the left folding piece (431) of the left trunk (430) and fit it below the trunk support plate (310); A horsetail lining is provided on the right edge of the body support plate (310) for forming a fold after the left folding piece (431) is folded and for sewing the first seam.

6. The automatic turning device for sewing trouser plackets according to claim 1, characterized in that: The trunk placement mechanism (30) further comprises a rotating pressing plate (360), wherein the rotating pressing plate (360) is hinged to the trunk support plate (310) and can be pressed on the upper surface of the left trunk (430) to achieve fixation.

7. The automatic turning device for sewing trouser plackets according to claim 1, characterized in that: The trunk support plate (310) is provided with a negative pressure suction device for adsorbing and fixing the left trunk (430).

8. The automatic turning device for sewing trouser plackets according to any one of claims 1 to 7, characterized in that: The zipper placement mechanism (20) comprises a zipper mounting plate (220), and the zipper placement plate (210) is installed on the zipper mounting plate (220) in a manner that is translatably movable along the first direction. A zipper lifting mechanism (230) is provided between the zipper mounting plate (220) and the bottom placket bottom plate (110), and the zipper lifting mechanism (230) is used to drive the zipper mounting plate (220) to move up and down.

9. The automatic turning device for sewing trouser plackets according to claim 8, characterized in that: A body lifting mechanism (370) is provided between the body support plate (310) and the zipper installation plate (220), and the body lifting mechanism (370) is used to drive the body support plate (310) to move up and down.

10. The automatic turning device for sewing trouser plackets according to claim 9, characterized in that: An air lock mechanism (120) is provided on the bottom flap bottom plate (110), and the air lock mechanism (120) is installed on a press frame assembly of a template machine.

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