A kind of sports casual suit production sewing process

Abstract

The present invention relates to the technical field of suit sewing, and more specifically, to a production and sewing process for sports and leisure suits, wherein a sewing machine is used in conjunction with a tension adjustment device to complete the sewing of suit fabrics. In the production and sewing process for sports and leisure suits, the telescopic bracket drives the entire telescopic bracket to move through the movement of the wrist of the sewing worker during work, and cooperates with the linkage part to allow the feed frame in the fabric stretching part to simulate the traction of another hand of the human being, and assist the feed dog in the sewing machine to complete the traction of the suit fabric, and the sewing worker only needs to guide the suit fabric, thereby reducing the work intensity and the requirements for the professional skills of the sewing worker.

Description

Technical Field

[0001] The invention relates to the technical field of suit sewing, in particular to a production and sewing process for sports and leisure suits. Background Art

[0002] The production and sewing of sports casual suits is a delicate and technically demanding process. In order to ensure its breathability and looseness, the fabrics are mostly made of soft and breathable natural fibers, such as cotton and linen, to improve wearing comfort and fabric elasticity. After sewing, advanced seamless technology will be used to reduce friction and discomfort at the seams, ensuring that the clothing has good freedom of movement while maintaining a fashionable appearance.

[0003] The patent with publication number CN216585530U discloses a sewing device for processing suits, including a support table, a sewing machine is fixedly installed on the upper surface of the support table, a circular groove is opened on the upper surface of the support table, a turntable is rotatably installed on the inner wall of the circular groove, a plurality of slots are opened through the circumference of the upper surface of the turntable, and elastic clips are inserted into the inner walls of the plurality of slots. By taking out the elastic clips inserted in the slots from the slots, the upper surface of the entire support table forms a flat table surface, so that the suit can be sewn; when the suit needs to be rotated for sewing, the elastic clip is inserted into the slot, and the suit to be sewn is clamped flatly on the turntable to keep the suit flat, so that the suit can be sewn.

[0004] When sewing a suit, the right hand of the sewing worker not only needs to cooperate with the left hand to complete the traction of the fabric during the sewing process, but also needs to constantly adjust the fabric to ensure the accuracy and smoothness of the seams. This requires extremely high skills from the workers and increases the intensity of work. In addition, in order to ensure the breathability and looseness of the fabric of the sports casual suit, the fabric will have higher elasticity, and the fabric on the right side is shorter when sewing. In order to ensure accuracy and prevent sewing errors caused by fabric slippage or uneven tension, the worker needs to stretch the fabric with his fingers close to the needle position. This operation not only requires extremely high technical precision, but also has significant safety hazards, because the fingers are very likely to be accidentally injured when approaching the high-speed sewing needle.

[0005] In view of this, we propose a sewing process for producing sports casual suits. Summary of the invention

[0006] The purpose of the present invention is to provide a production and sewing process for sports casual suits to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A sports casual suit production sewing process comprises the following steps:

[0009] S1. First, during the sewing process of the suit fabric, the worker places his left hand on the telescopic bracket on the wrist support portion of the tension adjustment device;

[0010] S2. Next, when the operator operates the sewing machine to sew the suit fabric, the left hand continuously pulls the fabric back and forth, driving the telescopic bracket as a whole to move together;

[0011] S3, when the telescopic bracket moves forward and backward, it will drive the outer frame and the movable tooth plate to move inside the fixed box body;

[0012] S4. Subsequently, the moving toothed plate moving forward will drive the shaft end gear to rotate, and drive the rotating shaft and the ratchet to rotate. At this time, the ratchet will conflict with the plurality of ratchet claws on the inner side of the outer ring, and then drive the outer ring to rotate, so that the ring wall gear on the outer side of the outer ring drives the transmission gear to rotate;

[0013] S5. After the transmission gear rotates, it will drive the docking gear to rotate, and drive one set of dials to rotate, and through the transmission group, it will drive another set of dials to rotate, and then drive the feeding frame to reciprocate in an elliptical motion trajectory, thereby assisting the feed dog in the sewing machine to complete the pulling work of the suit fabric;

[0014] S6. As the feeding frame moves downward as a whole, the fabric outer pulling plate in the outer pulling part moves downward along with the feeding frame;

[0015] S7. At this time, the pulling rope will pull the outer pull plate of the fabric to move inside the feeding frame, thereby stretching the fabric at the outer end of the suit outward, thereby ensuring the surface tension of the fabric at the sewing position;

[0016] S8. Subsequently, after the operator has finished sewing the suit fabric, he or she can remove his or her hands from the telescopic bracket;

[0017] The above steps use a sewing machine with a tension adjustment device to complete the sewing of the suit fabric;

[0018] The tension adjustment device includes a fixing mechanism, a wrist receiving portion arranged inside the fixing mechanism, a linkage portion arranged outside the wrist receiving portion, and a fabric stretching portion for ensuring the surface tension of the fabric;

[0019] The fixing mechanism comprises a fixing box body, a fixing plate arranged on the right side of the fixing box body, and a jacket cover arranged on the outside of the fixing plate;

[0020] The wrist bearing part includes a movable tooth plate, a pulley arranged at the corner position of the bottom surface of the movable tooth plate, an outer casing frame arranged on the bottom surfaces of the front and rear ends of the movable tooth plate, a telescopic bracket arranged inside the outer casing frame, and a rubber belt arranged inside the telescopic bracket;

[0021] The linkage part includes a rotating shaft, a shaft end gear arranged at the left end of the rotating shaft, an outer ring that rotates along with the rotating shaft, a plurality of ratchets arranged on the inner ring wall of the outer ring, an annular wall gear sleeved on the outer ring, and a transmission gear that rotates along with the annular wall gear.

[0022] The fabric stretching part includes a connecting bin, two sets of dials arranged on the outer side wall of the left end of the connecting bin, a docking gear arranged at the end of the center rod of the starting set of dials, a feeding frame that moves as the two sets of dials rotate, a transmission group arranged between the two sets of dials, and an external pulling part arranged on the bottom surface of the feeding frame;

[0023] The outer pulling part includes a fabric outer pulling plate, an outer convex strip arranged on the top surface of the fabric outer pulling plate, a plurality of limiting telescopic rods arranged on the outer side wall of the outer convex strip, a pressure spring sleeved on the outside of the limiting telescopic rod, and a plurality of pulling ropes arranged on the outer side wall of the right end of the outer convex strip.

[0024] In the technical solution of the present invention, a bottom groove running through from top to bottom is provided on the bottom surface of the fixed box body, a limiting ring groove is provided on the outer wall of the fixed plate, the outer cover is fixedly connected to the outer wall of the fixed plate by screws, a connecting frame is clamped and fixed between the fixed box body and the outer wall of the fixed plate, and a fixing bracket is clamped and fixed on the top surface of the outer cover.

[0025] In the technical solution of the present invention, the size of the movable tooth plate is adapted to the internal size of the fixed box body, the pulley is fixedly connected to the bottom surface of the movable tooth plate by screws, the outer casing is clamped and fixed to the inside of the movable tooth plate, the longitudinal rods at both ends of the telescopic bracket are slidably connected to the inside of the outer casing, and the two ends of the rubber belt are adhesively fixed to the inside of the telescopic bracket.

[0026] In the technical solution of the present invention, the left and right ends of the rotating shaft are respectively rotatably connected to the outer walls of the fixed box body and the fixed plate, the shaft end gear and the ratchet are fixedly connected to the outer wall of the rotating shaft through a bayonet, and the shaft end gear is meshed with the movable gear plate.

[0027] In the technical solution of the present invention, a plurality of regularly distributed annular wall grooves are provided on the inner annular wall of the outer sleeve ring, a limiting ring strip rotatably connected to the inside of the limiting ring groove is integrally formed on the outer wall of the outer sleeve ring, the pawl is rotatably connected to the groove wall of the annular wall groove, the annular wall gear is clamped and fixed to the outer annular wall of the outer sleeve ring, the transmission gear is rotatably connected to the outer wall of the fixed plate, and the transmission gear is meshed with the annular wall gear.

[0028] In the technical solution of the present invention, a limiting sliding groove running through the upper and lower parts is opened on the bottom horizontal plate of the connecting warehouse body, the two groups of dials are rotatably connected to the outer wall of the connecting warehouse body, the docking gear is fixedly connected to the outer wall of the dial center rod by a bayonet pin, and the docking gear is meshed with the transmission gear.

[0029] In the technical solution of the present invention, a circular hole is provided on the horizontal plate at the top of the feeding frame to provide a rotation space for the lever on the dial, the feeding frame is slidably connected to the inside of the limiting slide groove, frame wall slide grooves are provided on the opposite sides of the two trapezoidal rods at the bottom of the feeding frame, and a placement hole is provided on the outer wall of the horizontal rod at the bottom of the feeding frame.

[0030] In the technical solution of the present invention, the transmission group includes two sets of pulleys arranged in parallel and a transmission belt sleeved between the two sets of pulleys. The front and rear sets of pulleys are fixedly connected to the outer side walls of the front and rear sets of dial center rods by pins respectively.

[0031] In the technical solution of the present invention, both ends of the fabric outer pull plate are slidably connected to the inside of the frame wall slide groove, the bottom surface of the fabric outer pull plate is integrally formed with a rack for increasing friction, and the outer convex strip is integrally formed with the fabric outer pull plate.

[0032] In the technical solution of the present invention, the left and right ends of the limiting telescopic rod are respectively clamped and fixed on the hole wall of the placement hole and the outer wall of the outer convex strip, the left and right ends of the pressure spring are respectively adhesively fixed on the hole wall of the placement hole and the outer wall of the outer convex strip, and the upper and lower ends of the pulling rope are respectively adhesively fixed on the bottom surface of the fixing plate and the outer wall of the outer convex strip.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. In the production and sewing process of the sports casual suits, the telescopic bracket is driven to move as a whole by the movement of the sewing worker's wrist during work, and cooperates with the linkage part to allow the feeding frame in the fabric stretching part to simulate the traction of the other hand of the human being, and assist the feed dog in the sewing machine to complete the traction of the suit fabric, so that the sewing worker only needs to guide the suit fabric, thereby reducing the work intensity and the demand for the professional skills of the sewing worker.

[0035] 2. In the production and sewing process of the sports casual suits, when the overall feeding frame performs an elliptical reciprocating motion trajectory, the position of the fabric outer pulling plate in the outer pulling part will move to the right as the feeding frame moves downward, and the sewing position of the suit fabric will be stretched, thereby ensuring the tension on the fabric surface, thereby avoiding accidental injuries to the fingers when approaching the high-speed sewing needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0037] Figure 2 It is a schematic structural diagram of the tension adjustment device in the present invention.

[0038] Figure 3 It is a schematic cross-sectional view of the structure of the tension adjustment device in the present invention.

[0039] Figure 4 It is a schematic cross-sectional view of the structure of the fixing mechanism in the present invention.

[0040] Figure 5 It is a schematic structural diagram of the wrist supporting portion in the present invention.

[0041] Figure 6 It is a structural schematic diagram of the linkage part in the present invention.

[0042] Figure 7 It is a partial structural schematic diagram of the linkage part in the present invention.

[0043] Figure 8 It is a schematic cross-sectional view of the structure of the fabric stretching portion in the present invention.

[0044] Fig. 9 It is a partial structural schematic diagram of the fabric stretching part in the present invention.

[0045] Fig.10 It is a structural schematic diagram of the feeding frame in the present invention.

[0046] Fig.11 It is a structural schematic diagram of the transmission group in the present invention.

[0047] Fig.12 It is a schematic cross-sectional view of the structure of the outer pull portion in the present invention.

[0048] Description of reference numerals:

[0049] 100, sewing machine; 200, tension adjustment device; 210, fixing mechanism; 211, fixing box body; 2110, box bottom slot; 212, fixing plate; 2120, limiting ring groove; 213, outer cover; 214, connecting frame; 215, fixing bracket; 220, wrist bearing part; 221, moving tooth plate; 222, pulley; 223, outer frame; 224, telescopic bracket; 225, rubber belt; 230, linkage part; 231, rotating shaft; 232, shaft end gear; 233, ratchet; 234, outer ring; 2340, ring wall groove; 2 341, limit ring strip; 235, ratchet; 236, ring wall gear; 237, transmission gear; 240, fabric stretching part; 241, connecting bin body; 2410, limit slide groove; 242, dial; 243, docking gear; 244, feeding frame; 2440, frame wall slide groove; 2441, placement hole; 245, transmission group; 2450, pulley; 2451, transmission belt; 246, external pulling part; 2460, fabric external pulling plate; 2461, external convex strip; 2462, limit telescopic rod; 2463, pressure spring; 2464, pulling rope. DETAILED DESCRIPTION

[0050] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-Figure 12 As shown, this embodiment provides a technical solution:

[0052] A sports casual suit production sewing process comprises the following steps:

[0053] S1. First, during the sewing process of the suit fabric, the worker places his left hand on the telescopic bracket 224 on the wrist support portion 220 of the tension adjustment device 200;

[0054] S2. Next, when the operator operates the sewing machine 100 to sew the suit fabric, the left hand continuously pulls the fabric back and forth, driving the telescopic bracket 224 to move as a whole;

[0055] S3, when the telescopic bracket 224 moves forward and backward, it drives the outer frame 223 and the movable tooth plate 221 to move inside the fixed box body 211;

[0056] S4. Subsequently, the moving toothed plate 221 moving forward drives the shaft end gear 232 to rotate, and drives the rotating shaft 231 and the ratchet 233 to rotate. At this time, the ratchet 233 will conflict with the plurality of ratchet claws 235 on the inner side of the outer ring 234, and then drives the outer ring 234 to rotate, so that the annular wall gear 236 on the outer side of the outer ring 234 drives the transmission gear 237 to rotate;

[0057] S5, after the transmission gear 237 rotates, it will drive the docking gear 243 to rotate, and drive one set of dials 242 to rotate, and through the transmission group 245, it will drive another set of dials 242 to rotate, and then drive the feeding frame 244 to reciprocate in an elliptical motion trajectory, thereby assisting the feed dog in the sewing machine 100 to complete the pulling work of the suit fabric;

[0058] S6, as the feeding frame 244 moves downward as a whole, the fabric outer pulling plate 2460 in the outer pulling portion 246 moves downward along with the feeding frame 244;

[0059] S7. At this time, the pulling rope 2464 will pull the outer pull plate 2460 of the fabric to move inside the feeding frame 244, thereby stretching the fabric at the outer end of the suit outward, thereby ensuring the surface tension of the fabric at the sewing position;

[0060] S8, subsequently, after the operator completes the sewing of the suit fabric, he or she can remove the hand from the telescopic bracket 224;

[0061] In the above steps, the sewing machine 100 is used in conjunction with the tension adjustment device 200 to complete the sewing of the suit fabric.

[0062] In this embodiment, Figure 2-Figure 4 As shown, the tension adjustment device 200 includes a fixing mechanism 210, a wrist receiving portion 220 disposed inside the fixing mechanism 210, a linkage portion 230 disposed outside the wrist receiving portion 220, and a fabric stretching portion 240 for ensuring the surface tension of the fabric;

[0063] Specifically, the fixing mechanism 210 includes a fixing box body 211 , a fixing plate 212 disposed on the right side of the fixing box body 211 , and an outer cover 213 disposed on the outer side of the fixing plate 212 .

[0064] Furthermore, a bottom slot 2110 is provided on the bottom surface of the fixed box body 211, and a limiting ring groove 2120 is provided on the outer wall of the fixed plate 212. The outer cover 213 is fixedly connected to the outer wall of the fixed plate 212 by screws. A connecting frame 214 is clamped and fixed between the outer walls of the fixed box body 211 and the fixed plate 212, and a fixed bracket 215 is clamped and fixed on the top surface of the outer cover 213.

[0065] Furthermore, the fixed box body 211 is used to ensure the strength of the fixing mechanism 210, the slot 2110 at the bottom of the box is used to provide a moving range for the structure in the wrist supporting part 220, the fixed plate 212 cooperates with the jacket cover 213 to provide a placement space for the linkage part 230 and the fabric stretching part 240, the connecting frame 214 is used to connect the fixed box body 211 and the fixed plate 212, and the fixed bracket 215 is used to ensure the stable installation of the fixed plate 212.

[0066] In this embodiment, Figure 5 As shown, the wrist bearing portion 220 includes a movable tooth plate 221, a pulley 222 disposed at the corner position of the bottom surface of the movable tooth plate 221, an outer frame 223 disposed on the bottom surfaces of the front and rear ends of the movable tooth plate 221, a telescopic bracket 224 disposed inside the outer frame 223, and a rubber belt 225 disposed inside the telescopic bracket 224;

[0067] Specifically, the size of the movable tooth plate 221 is adapted to the internal size of the fixed box body 211, the pulley 222 is fixedly connected to the bottom surface of the movable tooth plate 221 by screws, the outer casing frame 223 is snap-fixed to the inside of the movable tooth plate 221, the longitudinal rods at both ends of the telescopic bracket 224 are slidably connected to the inside of the outer casing frame 223, and the two ends of the rubber belt 225 are adhesively fixed to the inside of the telescopic bracket 224.

[0068] Furthermore, the telescopic bracket 224 cooperates with the rubber belt 225 to provide a placement area for the sewing worker's wrist. When the operator operates the sewing machine 100 to sew the suit fabric, the left hand continuously pulls the fabric back and forth, driving the telescopic bracket 224 to move as a whole. When the telescopic bracket 224 moves back and forth, it will drive the outer jacket frame 223 together with the movable tooth plate 221 to move inside the fixed box body 211.

[0069] In this embodiment, Figure 6-Figure 7 As shown, the linkage part 230 includes a rotating shaft 231, a shaft end gear 232 disposed at the left end of the rotating shaft 231, an outer ring 234 that rotates along with the rotating shaft 231, a plurality of ratchet claws 235 disposed on the inner ring wall of the outer ring 234, an annular wall gear 236 sleeved on the outer side of the outer ring 234, and a transmission gear 237 that rotates along with the rotation of the annular wall gear 236;

[0070] Specifically, the left and right ends of the rotating shaft 231 are rotatably connected to the outer walls of the fixed box body 211 and the fixed plate 212 respectively, the shaft end gear 232 and the ratchet 233 are fixedly connected to the outer wall of the rotating shaft 231 through a bayonet, and the shaft end gear 232 is meshed with the movable gear plate 221.

[0071] Furthermore, a number of regularly distributed annular wall grooves 2340 are provided on the inner annular wall of the outer ring 234, and a limiting ring strip 2341 is integrally formed on the outer wall of the outer ring 234 and is rotatably connected to the inside of the limiting ring groove 2120. The pawl 235 is rotatably connected to the groove wall of the annular wall groove 2340, and the annular wall gear 236 is clamped and fixed to the outer annular wall of the outer ring 234. The transmission gear 237 is rotatably connected to the outer wall of the fixing plate 212, and the transmission gear 237 is meshed with the annular wall gear 236.

[0072] Furthermore, the moving toothed plate 221 moving forward will drive the shaft end gear 232 to rotate, and drive the rotating shaft 231 together with the ratchet 233 to rotate. At this time, the ratchet 233 will conflict with the plurality of ratchet claws 235 on the inner side of the outer ring 234, thereby driving the outer ring 234 to rotate, so that the annular wall gear 236 on the outer side of the outer ring 234 drives the transmission gear 237 to rotate.

[0073] In this embodiment, Figure 8-Figure 11 As shown, the fabric stretching part 240 includes a connecting bin body 241, two sets of dials 242 arranged on the outer side wall of the left end of the connecting bin body 241, a docking gear 243 arranged at the end of the center rod of the starting set of dials 242, a feeding frame 244 that moves as the two sets of dials 242 rotate, a transmission group 245 arranged between the two sets of dials 242, and an outer pulling part 246 arranged on the bottom surface of the feeding frame 244;

[0074] Specifically, a limit slide groove 2410 that runs through the upper and lower parts is opened on the bottom horizontal plate of the connecting warehouse body 241, and the two sets of dials 242 are rotatably connected to the outer wall of the connecting warehouse body 241. The docking gear 243 is fixedly connected to the outer wall of the center rod of the dial 242 by a bayonet pin, and the docking gear 243 is meshed with the transmission gear 237.

[0075] Furthermore, a circular hole is provided on the horizontal plate at the top of the feeding frame 244 for providing a rotation space for the lever on the dial 242, and the feeding frame 244 is slidably connected to the inside of the limiting slide groove 2410. Frame wall slide grooves 2440 are provided on the opposite sides of the two trapezoidal rods at the bottom of the feeding frame 244, and a placement hole 2441 is provided on the outer wall of the horizontal rod at the bottom of the feeding frame 244.

[0076] Furthermore, the transmission group 245 includes two sets of parallel pulleys 2450 and a transmission belt 2451 sleeved between the two sets of pulleys 2450. The front and rear sets of pulleys 2450 are fixedly connected to the outer side walls of the center rods of the front and rear sets of dials 242 by means of bayonet pins.

[0077] Furthermore, after the transmission gear 237 rotates, it will drive the docking gear 243 to rotate, and drive one of the groups of dials 242 to rotate, and the pulley 2450 fixed on the center rod of one of the groups of dials 242 will rotate, and through the transmission belt 2451, it will drive the pulley 2450 on the center rod of another group of dials 242 to rotate, and drive another group of dials 242 to rotate, and then drive the feeding frame 244 to perform an elliptical reciprocating motion trajectory, thereby assisting the feed dog in the sewing machine 100 to complete the traction work of the suit fabric.

[0078] In this embodiment, Fig.12 As shown, the outer pulling part 246 includes a fabric outer pulling plate 2460, an outer convex strip 2461 arranged on the top surface of the fabric outer pulling plate 2460, a plurality of position limiting telescopic rods 2462 arranged on the outer side wall of the outer convex strip 2461, a pressure spring 2463 sleeved on the outer side of the position limiting telescopic rod 2462, and a plurality of pulling ropes 2464 arranged on the outer side wall of the right end of the outer convex strip 2461;

[0079] Specifically, both ends of the fabric outer pull plate 2460 are slidably connected to the inside of the frame wall slide groove 2440 , and the bottom surface of the fabric outer pull plate 2460 is integrally formed with a rack for increasing friction, and the outer convex strip 2461 is integrally formed with the fabric outer pull plate 2460 .

[0080] Furthermore, the left and right ends of the limiting telescopic rod 2462 are respectively clamped and fixed on the hole wall of the placement hole 2441 and the outer wall of the outer convex strip 2461, the left and right ends of the pressure spring 2463 are respectively adhered and fixed on the hole wall of the placement hole 2441 and the outer wall of the outer convex strip 2461, and the upper and lower ends of the pulling rope 2464 are respectively adhered and fixed on the bottom surface of the fixing plate 212 and the outer wall of the outer convex strip 2461.

[0081] Furthermore, as the feeding frame 244 moves downward as a whole, the fabric outer pulling plate 2460 in the outer pulling part 246 moves downward together with the feeding frame 244. At this time, the pulling rope 2464 will pull the fabric outer pulling plate 2460 to move inside the feeding frame 244, thereby stretching the fabric at the outer end of the suit outward, thereby ensuring the surface tension of the fabric at the sewing position, and the pressure spring 2463 is used to restore the position of the fabric outer pulling plate 2460 when the feeding frame 244 moves upward as a whole, and the limiting telescopic rod 2462 is used to limit the telescopic area of ​​the pressure spring 2463.

[0082] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. A sports casual suit production sewing process, characterized in that: The following steps are involved: S1. First, during the sewing process of suit fabric, a worker places his left hand on the telescopic bracket (224) on the wrist support portion (220) of the tension adjustment device (200); S2. Next, when the operator operates the sewing machine (100) to sew the suit fabric, the left hand continuously pulls the fabric back and forth, thereby driving the telescopic bracket (224) to move as a whole; S3, when the telescopic bracket (224) moves forward and backward, it drives the outer casing frame (223) and the movable tooth plate (221) to move inside the fixed box body (211); S4. Subsequently, the moving toothed plate (221) moving forward drives the shaft end gear (232) to rotate, and drives the rotating shaft (231) and the ratchet (233) to rotate. At this time, the ratchet (233) will conflict with a plurality of ratchet claws (235) on the inner side of the outer ring (234), thereby driving the outer ring (234) to rotate, so that the annular wall gear (236) on the outer side of the outer ring (234) drives the transmission gear (237) to rotate; S5, after the transmission gear (237) rotates, it drives the docking gear (243) to rotate, which drives one set of dials (242) to rotate, and through the transmission group (245), it drives another set of dials (242) to rotate, and then drives the feeding frame (244) to perform an elliptical reciprocating motion, thereby assisting the feed dog in the sewing machine (100) to complete the pulling work of the suit fabric; S6, as the feeding frame (244) moves downward as a whole, the fabric outer pulling plate (2460) in the outer pulling portion (246) moves downward along with the feeding frame (244); S7. At this time, the pulling rope (2464) pulls the fabric outer pulling plate (2460) to move inside the feeding frame (244), thereby stretching the fabric at the outer end of the suit outward, thereby ensuring the surface tension of the fabric at the sewing position; S8, subsequently, after the operator completes the sewing of the suit fabric, he or she can remove the hand from the telescopic bracket (224); In the above steps, the sewing machine (100) is used in conjunction with the tension adjustment device (200) to complete the sewing of the suit fabric; The tension adjustment device (200) comprises a fixing mechanism (210), a wrist bearing portion (220) arranged inside the fixing mechanism (210), a linkage portion (230) arranged outside the wrist bearing portion (220), and a fabric stretching portion (240) for ensuring the surface tension of the fabric; The fixing mechanism (210) comprises a fixing box body (211), a fixing plate (212) arranged on the right side of the fixing box body (211), and an outer cover (213) arranged on the outside of the fixing plate (212); The wrist bearing portion (220) comprises a movable tooth plate (221), a pulley (222) arranged at a corner position of the bottom surface of the movable tooth plate (221), an outer casing frame (223) arranged on the bottom surfaces of the front and rear ends of the movable tooth plate (221), a telescopic bracket (224) arranged inside the outer casing frame (223), and a rubber belt (225) arranged inside the telescopic bracket (224); The linkage part (230) comprises a rotating shaft (231), a shaft end gear (232) arranged at the left end of the rotating shaft (231), an outer collar (234) that rotates along with the rotating shaft (231), a plurality of ratchet pawls (235) arranged on the inner ring wall of the outer collar (234), an annular wall gear (236) sleeved on the outer side of the outer collar (234), and a transmission gear (237) that rotates along with the rotation of the annular wall gear (236); The fabric stretching portion (240) comprises a connecting bin body (241), two sets of dials (242) arranged on the outer side wall of the left end of the connecting bin body (241), a docking gear (243) arranged at the end of the center rod of a set of dials (242), a feeding frame (244) that moves as the two sets of dials (242) rotate, a transmission group (245) arranged between the two sets of dials (242), and an external pulling portion (246) arranged on the bottom surface of the feeding frame (244); The outer pulling part (246) includes a fabric outer pulling plate (2460), an outer convex strip (2461) arranged on the top surface of the fabric outer pulling plate (2460), a plurality of limiting telescopic rods (2462) arranged on the outer side wall of the outer convex strip (2461), a pressure spring (2463) sleeved on the outside of the limiting telescopic rod (2462), and a plurality of pulling ropes (2464) arranged on the outer side wall of the right end of the outer convex strip (2461).

2. The sports casual suit production sewing process according to claim 1, characterized in that: The bottom surface of the fixed box body (211) is provided with a box bottom slot (2110) which passes through from top to bottom, the outer side wall of the fixed plate (212) is provided with a limit ring slot (2120), the outer cover (213) is fixedly connected to the outer side wall of the fixed plate (212) by means of screws, a connecting frame (214) is clamped and fixed between the outer side walls of the fixed box body (211) and the fixed plate (212), and a fixing bracket (215) is clamped and fixed on the top surface of the outer cover (213).

3. The sports casual suit production and sewing process according to claim 1 is characterized in that: The size of the movable tooth plate (221) is matched with the internal size of the fixed box body (211); the pulley (222) is fixedly connected to the bottom surface of the movable tooth plate (221) by screws; the outer casing frame (223) is snap-fitted and fixed to the inside of the movable tooth plate (221); the longitudinal rods at both ends of the telescopic bracket (224) are slidably connected to the inside of the outer casing frame (223); and the two ends of the rubber belt (225) are adhesively fixed to the inside of the telescopic bracket (224).

4. The sports casual suit production and sewing process according to claim 1, characterized in that: The left and right ends of the rotating shaft (231) are rotatably connected to the outer side walls of the fixed box body (211) and the fixed plate (212), respectively; the shaft end gear (232) and the ratchet (233) are both fixedly connected to the outer side wall of the rotating shaft (231) via a bayonet pin; the shaft end gear (232) is meshed with the movable toothed plate (221).

5. The sports casual suit production sewing process according to claim 2, characterized in that: The inner ring wall of the outer ring (234) is provided with a plurality of regularly distributed ring wall grooves (2340); the outer wall of the outer ring (234) is integrally formed with a limiting ring strip (2341) rotatably connected to the inside of the limiting ring groove (2120); the ratchet (235) is rotatably connected to the groove wall of the ring wall groove (2340); the ring wall gear (236) is clamped and fixed to the outer ring wall of the outer ring (234); the transmission gear (237) is rotatably connected to the outer wall of the fixing plate (212); and the transmission gear (237) is meshed with the ring wall gear (236).

6. The sports casual suit production and sewing process according to claim 1, characterized in that: A limit slide groove (2410) extending vertically through the bottom horizontal plate of the connecting bin body (241) is provided. The two sets of dials (242) are rotatably connected to the outer wall of the connecting bin body (241). The docking gear (243) is fixedly connected to the outer wall of the center rod of the dial (242) via a bayonet pin. The docking gear (243) is meshed with the transmission gear (237).

7. The sports casual suit production and sewing process according to claim 6 is characterized in that: The horizontal plate at the top of the feeding frame (244) is provided with a circular hole for providing a rotation space for the lever on the dial (242); the feeding frame (244) is slidably connected to the inside of the limiting slide groove (2410); the two trapezoidal rods at the bottom of the feeding frame (244) are provided with frame wall slide grooves (2440) on opposite sides; and a placement hole (2441) is provided on the outer side wall of the horizontal rod at the bottom of the feeding frame (244).

8. The sports casual suit production sewing process according to claim 1, characterized in that: The transmission group (245) comprises two groups of pulleys (2450) arranged in parallel and a transmission belt (2451) sleeved between the two groups of pulleys (2450). The front and rear groups of pulleys (2450) are respectively fixedly connected to the outer side walls of the center rods of the front and rear groups of dials (242) via bayonet pins.

9. The sports casual suit production and sewing process according to claim 7, characterized in that: The two ends of the fabric outer pull plate (2460) are slidably connected to the inside of the frame wall slide groove (2440), and the bottom surface of the fabric outer pull plate (2460) is integrally formed with a rack for increasing friction, and the outer convex strip (2461) is integrally formed with the fabric outer pull plate (2460).

10. The sports casual suit production sewing process according to claim 7, characterized in that: The left and right ends of the limiting telescopic rod (2462) are respectively clamped and fixed on the hole wall of the placement hole (2441) and the outer wall of the outer convex strip (2461); the left and right ends of the pressure spring (2463) are respectively adhered and fixed on the hole wall of the placement hole (2441) and the outer wall of the outer convex strip (2461); the upper and lower ends of the pulling rope (2464) are respectively adhered and fixed on the bottom surface of the fixing plate (212) and the outer wall of the outer convex strip (2461).

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