A self-adaptive variable-length strip zipper positioning and sewing device and sewing method

Abstract

The present invention relates to the field of garment processing, and more specifically to an adaptive variable-length strip zipper positioning and sewing device and a sewing method, comprising a frame, a fixing mechanism and a control device, wherein the fixing mechanism comprises a movable bracket and a fixed pressing block and a movable pressing block mounted on the movable bracket, the movable bracket being arranged on the frame, and the control device comprising a first linear drive component and a propulsion component, the first linear drive component being arranged on the frame and used to control the lifting and lowering of the movable bracket, and the propulsion component being used to control the movable pressing block to move along the movable bracket. The present invention realizes the function of flattening the zipper in the process of fixing the zipper, and achieves the effect of avoiding wrinkles and deflections of the zipper by moving the movable pressing block after the zipper is pressed, thereby solving the problem that the zipper may deflect and bend and wrinkle when the traditional positioning and sewing device is fixing the zipper, thus affecting the sewing quality.

Description

Technical Field

[0001] The invention relates to the field of garment processing, and in particular to a positioning and sewing device and a sewing method for a strip zipper with an adaptive variable length. Background Art

[0002] In the garment processing process, the sewing of zippers has high requirements on the sewing position. In order to avoid the sewing position deviation affecting the garment quality, the workers' experience is required to be high. Therefore, manual sewing is not only inefficient, but also the sewing quality is not stable.

[0003] For this purpose, Chinese patent publication number CN114232229A discloses a clothing zipper positioning and sewing device and method thereof. When sewing a zipper, the zipper and the clothing can be fixed on a bottom plate. After the fixing is completed, the staff only needs to take the sewing device to a zipper-specific sewing machine for sewing, and the zipper and the clothing are fixed. Regardless of the proficiency of the staff, a newcomer can also sew the zipper to the clothing proficiently, thereby improving the efficiency of zipper sewing and improving the accuracy of zipper sewing to the clothing, while also reducing the labor intensity of the staff; the positioning and sewing device can adapt to zippers of different lengths when sewing the zipper by telescopically setting the chain pressing plate, the clothing pressing plate and the bottom plate, thereby improving the applicability of the sewing device; the set fixing piece can fix the telescopic chain pressing plate, the clothing pressing plate and the bottom plate, to prevent the chain pressing plate, the clothing pressing plate and the bottom plate from sliding when sewing the zipper, causing the clothing and the zipper to be unable to be fixed firmly.

[0004] However, before using the existing positioning and sewing device, the operator is required to adjust the length of the chain pressing plate used to fix the zipper and the clothing pressing plate used to fix the clothes in turn. In addition, since the zipper and the clothes need to be re-fixed after each sewing of a zipper is completed, the operator is required to ensure that the zipper and the clothes are accurately matched with the chain pressing plate and the clothing pressing plate respectively when fixing. Once deflection occurs, it will still affect the sewing quality of the zipper. Summary of the invention

[0005] In view of the above problems, an adaptive variable-length strip zipper positioning and sewing device and a sewing method are provided. The frame, fixing mechanism and control device are used to solve the problem that the zipper may deflect and bend and wrinkle when the traditional positioning and sewing device is fixing the zipper, thereby affecting the sewing quality.

[0006] In order to solve the problems of the prior art, the present invention provides an adaptive variable-length strip zipper positioning and sewing device, comprising a frame, a fixing mechanism and a control device, the fixing mechanism comprising a movable bracket and a fixed pressure block and a movable pressure block installed on the movable bracket, the movable bracket is arranged on the frame, the control device comprises a first linear drive component and a propulsion component, the first linear drive component is arranged on the frame and is used to control the lifting and lowering of the movable bracket, the propulsion component is used to control the movable pressure block to move along the movable bracket, in the working state, when the fixed pressure block and the movable pressure block press the zipper under the drive of the first linear drive component, the propulsion component controls the movable pressure block to move in a direction away from the fixed pressure block.

[0007] Preferably, a limiting component for limiting the movement of the movable pressing block is provided on the frame. After the first linear drive component drives the movable bracket to move downward, the limiting component releases the movement restriction on the movable pressing block, and the propulsion component automatically drives the movable pressing block to move in a direction away from the fixed pressing block.

[0008] Preferably, the movable bracket is provided with a baffle for limiting the moving range of the movable pressure block and an adjusting assembly for adjusting the position of the baffle. In the working state, when the propulsion assembly drives the movable pressure block to move, the movable pressure block stops moving after contacting the baffle due to the obstruction of the baffle.

[0009] Preferably, an anti-slip pad is provided at the bottom of the fixed pressing block.

[0010] Preferably, the propulsion assembly includes a guide rail, an articulated seat, a first elastic member and a connecting rod, the guide rail is arranged on the frame and extends in the vertical direction, the articulated seat is slidably mounted on the guide rail, the first elastic member is mounted on the frame, and the end of the first elastic member is connected to the articulated seat, and the two ends of the connecting rod are respectively hinged to the articulated seat and the movable pressure block.

[0011] Preferably, the limiting assembly includes a fixed plate and a limit block, the fixed plate is mounted on the frame, the limit block is mounted on the fixed plate, and a docking groove that cooperates with the limit block is opened on the movable pressure block. When the limit block is plugged into the docking groove, the movement of the movable pressure block is restricted.

[0012] Preferably, the adjustment assembly includes a fixed seat, a first screw and a rotating handle, the fixed seat is mounted on the movable bracket, the first screw is rotatably set on the fixed seat, and the first screw is threadedly connected to the baffle, the rotating handle is rotatably set on the fixed seat, and the rotating handle is coaxially connected to the first screw.

[0013] Preferably, a reset device for controlling the reset of the articulated seat is provided on the frame, the reset device includes a push plate and a second linear drive assembly, the push plate is slidably mounted on the frame, the second linear drive assembly is used to drive the push plate to rise and fall in the vertical direction, when the second linear drive assembly drives the push plate to move up, the push plate contacts the articulated seat and pushes the articulated seat to move up.

[0014] Preferably, a distance sensor for detecting the distance between the movable pressing block and the fixed pressing block is provided on the movable bracket.

[0015] A sewing method comprises the following steps: S1, placing a zipper on a frame, and making one end of the zipper be directly below a fixed pressing block; S2, starting a first linear drive component, and the first linear drive component drives a movable bracket to move downward until the fixed pressing block and the movable pressing block press the zipper; S3, a propulsion component drives the movable pressing block to move in a direction away from the fixed pressing block, and the zipper is flattened by the squeezing effect of the movable pressing block on the zipper; S4, sewing the zipper, and after the processing is completed, the zipper is moved to a designated unloading position.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention realizes the function of flattening the zipper in the process of fixing the zipper through the frame, the fixing mechanism and the control device, and achieves the effect of avoiding wrinkles and deflections of the zipper by moving the movable pressing block after pressing the zipper, thereby solving the problem that the zipper may be deflected and bent and wrinkled when the traditional positioning and sewing device is fixing the zipper, thereby affecting the sewing quality;

[0018] 2. The present invention realizes the function of automatically controlling the movement of the movable pressing block after the movable bracket moves downward through the limiting component, thereby achieving the effect of controlling the movement timing of the movable pressing block;

[0019] 3. The present invention realizes the function of controlling the moving position of the movable pressing block through the baffle and the adjusting assembly, thereby achieving the effect of adapting to zippers of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of a self-adaptive variable-length strip zipper positioning and sewing device in working state;

[0021] Figure 2 The invention is a three-dimensional schematic diagram of a fixing mechanism and a control mechanism in a positioning and sewing device for a self-adaptive variable-length strip zipper;

[0022] Figure 3 yes Figure 2 A local enlarged schematic diagram of the middle A;

[0023] Figure 4 The present invention is a three-dimensional schematic diagram of a fixed pressing block and a first linear driving component in a positioning and sewing device for a self-adaptive variable-length strip zipper;

[0024] Figure 5 The invention is a three-dimensional schematic diagram of a fixing mechanism and a control mechanism in a positioning and sewing device for a self-adaptive variable-length strip zipper in a reset state;

[0025] Figure 6 The present invention is a three-dimensional schematic diagram of a propulsion component and a second linear drive component in a self-adaptive variable-length strip zipper positioning and sewing device;

[0026] Figure 7 yes Figure 6 A partial enlarged schematic diagram of point B in the middle;

[0027] Figure 8 It is a front view of a self-adaptive variable-length strip zipper positioning and sewing device in working state;

[0028] Fig. 9 The present invention is a three-dimensional exploded schematic diagram of a movable pressing block and a limiting component in a positioning and sewing device of a self-adaptive variable-length strip zipper;

[0029] Fig.10 The invention is a three-dimensional schematic diagram of a self-adaptive variable-length strip zipper positioning and sewing device in a reset state.

[0030] The numbers in the figure are: 1-frame; 11-support; 12-column; 13-second elastic member; 2-fixing mechanism; 21-movable bracket; 211-baffle; 212-guide rod; 213-distance sensor; 22-fixed pressure block; 221-anti-slip pad; 23-movable pressure block; 231-docking groove; 24-adjusting assembly; 241-fixed seat; 242-first screw; 243-rotating handle; 3-control device; 31-first straight Linear drive assembly; 311-linear drive; 312-cross plate; 313-connecting plate; 32-propelling assembly; 321-guide rail; 322-hinge seat; 323-first elastic member; 324-connecting rod; 33-limiting assembly; 331-fixing plate; 332-limiting block; 333-mounting plate; 4-resetting device; 41-push plate; 42-second linear drive assembly; 421-second screw; 422-rotational drive; 5-zipper. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figure 1-Figure 4: An adaptive variable-length strip zipper positioning and sewing device, comprising a frame 1, a fixing mechanism 2 and a control device 3, wherein the fixing mechanism 2 comprises a movable bracket 21 and a fixed pressure block 22 and a movable pressure block 23 mounted on the movable bracket 21, the movable bracket 21 is arranged on the frame 1, the control device 3 comprises a first linear drive component 31 and a propulsion component 32, the first linear drive component 31 is arranged on the frame 1 and is used to control the lifting and lowering of the movable bracket 21, the propulsion component 32 is used to control the movable pressure block 23 to move along the movable bracket 21, and in the working state, when the fixed pressure block 22 and the movable pressure block 23 press the zipper 5 under the drive of the first linear drive component 31, the propulsion component 32 controls the movable pressure block 23 to move in the direction away from the fixed pressure block 22.

[0033] The present invention realizes the function of flattening the zipper 5 during the process of fixing the zipper 5 through the frame 1, the fixing mechanism 2 and the control device 3, so as to avoid wrinkles and deflections of the zipper 5 by moving the movable pressing block 23 after the zipper 5 is pressed, thereby solving the problem that the zipper 5 may be deflected, bent and wrinkled when the zipper 5 is fixed by the traditional positioning and sewing device, thereby affecting the sewing quality. A support 11 is provided at one end of the frame 1, and a column 12 is provided on the support 11. The movable bracket 21 is slidably matched with the column 12. A second elastic member 13 is sleeved on the column 12. The two ends of the second elastic member 13 are respectively connected to the frame 1 and the movable bracket 21, and the column 12 and the second elastic member 13 play a guiding role in the lifting and lowering of the movable bracket 21; a controller for human-computer interaction is provided on the frame 1, and the first linear drive component 31 includes a linear drive 311, a cross plate 312 and a connecting plate 313. The linear drive 311 is installed on the frame 1, the cross plate 312 is connected to the fixed pressure block 22, the connecting plate 313 is connected to the cross plate 312, and the connecting plate 313 is transmission-connected to the driving end of the linear drive 311. The linear drive 311 is preferably a linear cylinder or an electric push rod, and the linear drive 311 is electrically connected to the controller; in the working state, the operator The operator places the zipper 5 under the movable bracket 21 on the frame 1, and then sends a signal to the linear driver 311 through the controller. After receiving the signal, the linear driver 311 drives the connecting plate 313 to move downward, and the connecting plate 313 drives the cross plate 312 to move, and the cross plate 312 drives the fixed pressure block 22 and the movable bracket 21 to move downward, and the movable bracket 21 drives the movable pressure block 23 to move downward, and then one end of the zipper 5 is pressed by the fixed pressure block 22 and the movable pressure block 23, and then the movable pressure block 23 is driven by the propulsion assembly 32 to move in the direction away from the fixed pressure block 22. In this process, the cloth strip of the zipper 5 is pushed by the movable pressure block 23 to achieve the effect of flattening the zipper 5, avoiding the zipper 5 from bending and wrinkling when placed. Deflection caused by wrinkles, and then the zipper 5 is sewed by a sewing machine to achieve the effect of improving the sew quality. The sewing machine is not shown in the figure.

[0034] Reference Figure 2 : A limiting assembly 33 for limiting the movement of the movable pressing block 23 is provided on the frame 1. After the first linear drive assembly 31 drives the movable bracket 21 to move downward, the limiting assembly 33 releases the movement restriction on the movable pressing block 23, and the propulsion assembly 32 automatically drives the movable pressing block 23 to move in a direction away from the fixed pressing block 22.

[0035] The present invention realizes the function of automatically controlling the movement of the movable pressing block 23 after the movable bracket 21 moves downward through the limiting component 33, thereby achieving the effect of controlling the movement timing of the movable pressing block 23. When the movable bracket 21 is in the reset state, it is necessary to prevent the movable bracket 21 from moving. For this purpose, a limiting component 33 for limiting the movement of the movable pressing block 23 is provided, and the control propulsion component 32 is controlled to always maintain the driving force on the movable pressing block 23. After the movable bracket 21 moves downward, when the fixed pressing block 22 and the movable pressing block 23 press the zipper 5, by releasing the movement restriction of the limiting component 33 on the movable pressing block 23, the propulsion component 32 automatically drives the movable pressing block 23 to move, and the zipper 5 is flattened and fixed by the movable pressing block 23.

[0036] Reference Figure 2 : The movable bracket 21 is provided with a baffle 211 for limiting the moving range of the movable pressure block 23 and an adjusting component 24 for adjusting the position of the baffle 211. In the working state, when the propulsion component 32 drives the movable pressure block 23 to move, when the movable pressure block 23 contacts the baffle 211, it is blocked by the baffle 211 and stops moving.

[0037] The present invention realizes the function of controlling the moving position of the movable pressing block 23 through the baffle 211 and the adjustment component 24, so as to achieve the effect of adapting to zippers 5 of different lengths. Before processing, the position of the baffle 211 is adjusted by the adjustment component 24. Then the first linear drive component 31 is started, and the first linear drive component 31 drives the fixed pressing block 22 and the movable bracket 21 to move, and then one end of the zipper 5 is pressed by the fixed pressing block 22 and the movable pressing block 23, and then the movable pressing block 23 is driven by the propulsion component 32 to move in the direction away from the fixed pressing block 22 until the movable pressing block 23 contacts the baffle 211, and the further movement of the movable pressing block 23 is limited by the baffle 211. In this process, the cloth strip of the zipper 5 is pushed by the movable pressing block 23 to achieve the effect of flattening the zipper 5, avoiding the deflection caused by bending and wrinkles when the zipper 5 is placed, and then the zipper 5 is sewn by the sewing machine.

[0038] Reference Figure 4 : An anti-skid pad 221 is provided at the bottom of the fixed pressing block 22.

[0039] The present invention realizes the function of improving the pressing stability of the fixed pressing block 22 on the zipper 5 after the zipper 5 is pressed by the anti-skid pad 221. The anti-skid pad 221 is provided with a plurality of anti-skid grooves at equal intervals, and the anti-skid pad 221 is preferably made of rubber. In the process of the movable pressing block 23 pushing the zipper 5, the zipper 5 needs to be pressed by the fixed pressing block 22. For this purpose, the anti-skid pad 221 is provided at the bottom of the fixed pressing block 22. The anti-skid pad 221 increases the friction force on the zipper 5, thereby preventing the zipper 5 and the fixed pressing block 22 from sliding relative to each other in the process of the fixed pressing block 22 pressing the zipper 5.

[0040] Reference Figure 5-Figure 8 and Fig.10 The propulsion assembly 32 includes a guide rail 321, an articulated seat 322, a first elastic member 323 and a connecting rod 324. The guide rail 321 is arranged on the frame 1, and the guide rail 321 extends in the vertical direction. The articulated seat 322 is slidably installed on the guide rail 321. One end of the first elastic member 323 is installed on the frame 1, and the other end of the first elastic member 323 is connected to the articulated seat 322. The two ends of the connecting rod 324 are respectively hinged to the articulated seat 322 and the movable pressure block 23.

[0041] The present invention realizes the function of pushing the movable pressing block 23 to move through the guide rail 321, the hinge seat 322, the first elastic member 323 and the connecting rod 324. The first elastic member 323 is preferably a nitrogen spring. After the linear drive 311 drives the movable bracket 21 and the fixed pressing block 22 to move downward, the limiting assembly 33 releases the movement restriction on the movable pressing block 23, the first elastic member 323 stretches and pushes the hinge seat 322 to move downward, and the hinge seat 322 pushes the movable pressing block 23 to move away from the fixed pressing block 22 through the connecting rod 324 until the movable pressing block 23 stops moving after contacting the baffle 211. At the same time, the movable pressing block 23 is subjected to the continuous thrust provided by the first elastic member 323, so that the movable pressing block 23 and the baffle 211 are always tightly matched.

[0042] Reference Figure 5 , Figure 8 and Fig. 9 The limiting assembly 33 includes a fixed plate 331 and a limit block 332. The fixed plate 331 is installed on the frame 1. The limit block 332 is arranged on the fixed plate 331. A docking groove 231 cooperating with the limit block 332 is provided on the movable pressing block 23. When the limit block 332 is plugged into the docking groove 231, the movement of the movable pressing block 23 is limited.

[0043] The present invention realizes the function of limiting the movement of the movable pressing block 23 through the fixing plate 331, the limiting block 332 and the docking groove 231. The limiting block 332 is connected to the mounting plate 333, the fixing plate 331 is in the shape of a long strip, and the fixing plate 331 is provided with a convex strip for strengthening the structural strength, and the convex strip is a part of the fixing plate 331. Figure 5The indicating part of the middle fixing plate 331 is the convex strip of the fixing plate 331, and the two ends of the fixing plate 331 are respectively connected to the frame 1 and the support 11 on the frame 1, and a through hole is opened on the fixing plate 331 that matches the shape of the limit block 332, and the limit block 332 and the mounting plate 333 are installed from one side of the fixing plate 331, and the limit block 332 passes through the fixing plate 331 from the through hole to the other side of the fixing plate 331, and the mounting plate 333 is fixed to the fixing plate 331 by bolts; when the movable bracket 21 is in the reset state, the movable bracket 21 and the fixing plate 331 are at the same height, and the limit block 332 is docked with the docking groove 231 on the movable pressing block 23, and the movement of the movable pressing block 23 is limited by the limit block 332, and at this time, the distance between the movable pressing block 23 and the fixed pressing block 22 is small, so that the movable pressing block 23 can effectively push the zipper 5 after the zipper 5 is compressed. After the movable pressing block 23 descends, it separates from the limiting block 332 , and the limiting block 332 no longer restricts the movable pressing block 23 from moving in the horizontal direction.

[0044] Reference Figure 2 and Figure 3 : The adjustment component 24 includes a fixed seat 241, a first screw 242 and a rotating handle 243. The fixed seat 241 is installed on the movable bracket 21. The first screw 242 is rotatably set on the fixed seat 241, and the first screw 242 is threadedly connected to the baffle 211. The guide rods 212 on the movable brackets 21 at both ends of the baffle 211 are slidingly connected. The rotating handle 243 is rotatably set on the fixed seat 241, and the rotating handle 243 is coaxially connected to the first screw 242.

[0045] The present invention realizes the function of adjusting the position of the baffle 211 through the fixing seat 241, the first screw 242 and the rotating handle 243. Before processing the zipper 5, it is necessary to adjust the position of the baffle 211 according to the size of the processed zipper 5. The operator holds the rotating handle 243 to rotate the first screw 242, and the first screw 242 drives the baffle 211 threadedly connected thereto to move, so that the movable pressing block 23 can stably press the end of the zipper 5 when in contact with the baffle 211.

[0046] Reference Figure 1 , Figure 6 and Figure 7 : A reset device 4 for controlling the reset of the articulated seat 322 is provided on the frame 1, and the reset device 4 includes a push plate 41 and a second linear drive component 42. The push plate 41 is slidably installed on the frame 1, and the second linear drive component 42 is used to drive the push plate 41 to rise and fall in the vertical direction. When the second linear drive component 42 drives the push plate 41 to move upward, the push plate 41 contacts the articulated seat 322 and pushes the articulated seat 322 to move upward.

[0047] The present invention realizes the function of driving the articulated seat 322 to reset by means of the push plate 41 and the second linear drive assembly 42. The second linear drive assembly 42 includes a second screw 421 and a rotary driver 422. The second screw 421 is rotatably arranged on the frame 1, and the second screw 421 is threadedly connected to the push plate 41. The rotary driver 422 is installed on the frame 1, and the driving end of the rotary driver 422 is transmission-connected to the second screw 421. The rotary driver 422 is preferably a servo motor, and the servo motor is electrically connected to the controller. After the processing is completed, the controller sends a signal to the rotary driver 422, and the rotary driver 422 drives the second screw 421 to rotate after receiving the signal. The second screw 421 The push plate 41 threadably connected thereto is driven to move upward, and after the push plate 41 contacts the hinge seat 322, it pushes the hinge seat 322 to move upward, and the hinge seat 322 pulls the movable pressure block 23 to reset via the connecting rod 324. After the movable pressure block 23 and the hinge seat 322 are reset, the first linear drive assembly 31 drives the movable bracket 21 to move upward and reset. After the movable bracket 21 is reset, the movement of the movable pressure block 23 is limited by the limit block 332, and the movement of the hinge seat 322 is further limited by the movable pressure block 23, so that the hinge seat 322 and the movable pressure block 23 remain in the reset state, so as to facilitate the processing of the next zipper 5.

[0048] Reference Figure 4 The movable bracket 21 is provided with a distance sensor 213 for detecting the distance between the movable pressing block 23 and the fixed pressing block 22.

[0049] The present invention realizes the function of detecting the distance between the movable pressing block 23 and the fixed pressing block 22 in real time during the working process through the distance sensor 213. The distance sensor 213 is electrically connected to the controller; during the processing, when the zipper 5 is seriously deflected, the movement of the movable pressing block 23 may be blocked, which in turn causes the movable pressing block 23 to be unable to move to the baffle 211, affecting the fixation of the zipper 5 and seriously affecting the sewing quality of the zipper 5. For this reason, the distance sensor 213 is designed, and the distance sensor 213 is used to detect the distance between the movable pressing block 23 and the fixed pressing block 22 in real time during the processing. When the movement of the movable pressing block 23 is abnormal, a feedback signal is given to the controller, and the controller stops the processing to avoid further expansion of the processing accident and reduce cost losses.

[0050] Reference Figure 1-Figure 4: A sewing method, comprising the following steps: S1, placing a zipper 5 on a frame 1, and making one end of the zipper 5 directly below a fixed pressing block 22; S2, starting a first linear drive component 31, the first linear drive component 31 drives the movable bracket 21 to move downward until the fixed pressing block 22 and the movable pressing block 23 press the zipper 5; S3, the propulsion component 32 drives the movable pressing block 23 to move away from the fixed pressing block 22, and the zipper 5 is flattened by the squeezing effect of the movable pressing block 23 on the zipper 5; S4, sewing the zipper 5, and after the processing is completed, the zipper 5 is moved to a designated unloading position.

[0051] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An adaptive variable length strip zipper positioning and sewing device, characterized in that: The invention comprises a frame (1), a fixing mechanism (2) and a control device (3), wherein the fixing mechanism (2) comprises a movable support (21) and a fixed pressure block (22) and a movable pressure block (23) mounted on the movable support (21), the movable support (21) being arranged on the frame (1), and the control device (3) comprising a first linear drive component (31) and a propulsion component (32), wherein the first linear drive component (31) is arranged on the frame (1) and is used to control the lifting and lowering of the movable support (21), and the propulsion component (32) is used to control the horizontal movement of the movable pressure block (23) along the movable support (21), and in a working state, when the fixed pressure block (22) and the movable pressure block (23) are in the first linear drive component (31), the movable pressure block (23) and the first linear drive component (32) are in the first linear drive component (31). After the zipper (5) is pressed by the drive of the component (31), the propulsion component (32) controls the movable pressure block (23) to move in a direction away from the fixed pressure block (22); a limiting component (33) for limiting the movement of the movable pressure block (23) is provided on the frame (1); after the first linear drive component (31) drives the movable bracket (21) to move downward, the limiting component (33) releases the movement restriction on the movable pressure block (23), and the propulsion component (32) automatically drives the movable pressure block (23) to move in a direction away from the fixed pressure block (22); a baffle (211) for limiting the movement range of the movable pressure block (23) and a baffle (211) for adjusting the position of the baffle (211) are provided on the movable bracket (21). The adjusting assembly (24) is configured such that, in a working state, when the pushing assembly (32) drives the movable pressing block (23) to move, the movable pressing block (23) stops moving due to the obstruction of the baffle (211) after contacting the baffle (211); the pushing assembly (32) comprises a guide rail (321), a hinge seat (322), a first elastic member (323) and a connecting rod (324); the guide rail (321) is arranged on the frame (1), and the guide rail (321) extends in a vertical direction; the hinge seat (322) is slidably mounted on the guide rail (321); one end of the first elastic member (323) is mounted on the frame (1), and the other end of the first elastic member (323) is connected to the hinge seat (322); and the connecting rod (324) is connected to the hinge seat (322). The two ends of the (324) are respectively hinged to the hinge seat (322) and the movable pressure block (23); after the limiting component (33) releases the movement restriction on the movable pressure block (23), the first elastic member (323) stretches and pushes the hinge seat (322) to move downward, and the hinge seat (322) pushes the movable pressure block (23) to move in a direction away from the fixed pressure block (22) through the connecting rod (324); the limiting component (33) comprises a fixed plate (331) and a limit block (332), the fixed plate (331) is mounted on the frame (1), the limit block (332) is arranged on the fixed plate (331), and the movable pressure block (23) is provided with a docking groove (231) that cooperates with the limit block (332);When the movable bracket (21) is in the reset state, the movable bracket (21) and the fixed plate (331) are at the same height, and the limit block (332) is docked with the docking groove (231) on the movable pressing block (23), and the movement of the movable pressing block (23) is restricted by the limit block (332); after the movable pressing block (23) descends, it is separated from the limit block (332), and the limit block (332) no longer restricts the movement of the movable pressing block (23) in the horizontal direction. ; 2. The self-adaptive variable-length strip zipper positioning and sewing device according to claim 1, characterized in that: An anti-slip pad (221) is provided at the bottom of the fixed pressing block (22).

3. The self-adaptive variable-length strip zipper positioning and sewing device according to claim 1, characterized in that: The adjustment assembly (24) comprises a fixed seat (241), a first screw rod (242) and a rotating handle (243); the fixed seat (241) is mounted on the movable bracket (21); the first screw rod (242) is rotatably disposed on the fixed seat (241), and the first screw rod (242) is threadedly connected to the baffle (211); the rotating handle (243) is rotatably disposed on the fixed seat (241), and the rotating handle (243) is coaxially connected to the first screw rod (242).

4. The adaptive variable length strip zipper positioning and sewing device according to claim 3, characterized in that: A reset device (4) for controlling the reset of the articulated seat (322) is provided on the frame (1). The reset device (4) comprises a push plate (41) and a second linear drive assembly (42). The push plate (41) is slidably mounted on the frame (1). The second linear drive assembly (42) is used to drive the push plate (41) to move up and down in a vertical direction. When the second linear drive assembly (42) drives the push plate (41) to move upward, the push plate (41) contacts the articulated seat (322) and pushes the articulated seat (322) to move upward.

5. The self-adaptive variable-length strip zipper positioning and sewing device according to claim 1, characterized in that: The movable bracket (21) is provided with a distance sensor (213) for detecting the distance between the movable pressing block (23) and the fixed pressing block (22).

6. A sewing method, using the adaptive variable length strip zipper positioning and sewing device as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Place the zipper (5) on the frame (1) so that one end of the zipper (5) is directly below the fixed pressing block (22); S2. Start the first linear drive component (31), which drives the movable bracket (21) to move downward until the fixed pressing block (22) and the movable pressing block (23) press the zipper (5); S3. The propulsion component (32) drives the movable pressing block (23) to move in a direction away from the fixed pressing block (22), and the zipper (5) is flattened by the squeezing effect of the movable pressing block (23) on the zipper (5); S4. Perform a sewing process on the zipper (5), and after the process is completed, move the zipper (5) to a designated unloading position.

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