Sewing equipment and sewing process for making life jackets

Abstract

The present invention relates to the technical field of sewing equipment, in particular to a sewing equipment and sewing process for making life jackets, comprising a sewing machine bed and a mobile sewing module arranged inside the sewing machine bed for sewing life jackets, wherein the sewing machine bed is fixedly provided with a T-shaped frame plate, the T-shaped frame plate is fixedly provided with a dye liquid bin box, the number of the dye liquid bin boxes is several groups, and each dye liquid bin box contains dye liquid of different colors, a vibrating pressure rod is arranged above the dye liquid bin box, and a V-shaped fork head is fixedly arranged at the lower end of the vibrating pressure rod; during the process of sewing life jackets, the sewing equipment of the present invention can realize free switching of the colors of sewing wires without stopping the machine or disconnecting the line, thereby adapting to the design of life jackets with more complex styles.

Description

Technical Field

[0001] The invention relates to the technical field of sewing equipment, in particular to sewing equipment and a sewing process for making life jackets. Background Art

[0002] Sewing equipment is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing material are interwoven or sewn together. Sewing equipment can greatly improve the sewing efficiency and aesthetics of the fabric, and is widely used in clothing production and other fields; the life jackets designed by the applicant company have a segmented color-changing design for the sewing stitches in order to improve the aesthetics. In traditional technology, to achieve the color change of the sewing stitches, wires with segmented color changes can be used, but this method requires advance reservations from the wire supplier, and has poor timeliness and flexibility, and is not suitable for small-batch production or testing needs; another method is to stop the machine to change the thread during the sewing process, which is not only inefficient, but also more troublesome to change the thread again. Summary of the invention

[0003] The object of the present invention is to provide a sewing device and a sewing process for making life jackets to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sewing device for making life jackets, comprising a sewing machine bed and a mobile sewing module arranged inside the sewing machine bed for sewing life jackets, the sewing machine bed is fixedly provided with a T-shaped frame plate, the T-shaped frame plate is fixedly provided with a dye liquid bin box, the number of the dye liquid bin boxes is several groups, and each dye liquid bin box contains dye liquid of different colors, a vibration pressure rod is arranged above the dye liquid bin box, a V-shaped fork is fixedly arranged at the lower end of the vibration pressure rod, and a vibration generator is arranged above the vibration pressure rod, so that The vibration generator is provided with a connecting vibration fork, which is used to drive the connecting vibration fork to vibrate, the connecting vibration fork is fixedly installed with the vibration pressure rod, and the vibration pressure rod is driven to vibrate by the connecting vibration fork, a lifting rod is fixedly installed on the outside of the vibration generator, and a lifting control box is fixedly provided on the outside of the dye liquid bin box, and the lifting control box is used to drive the lifting rod to move up and down, and an adaptive drying module is provided on the T-shaped frame plate; the sewing wire first passes through the dye liquid bin box and between the upper and lower V-shaped fork heads, then passes through the adaptive drying module, and finally enters the mobile sewing module to sew the life jacket.

[0005] The adaptive drying module includes a supporting module, a central drum cavity and a drying inner tube. The supporting module is fixedly mounted on the outer surface of the T-shaped frame plate, the central drum cavity is fixedly mounted on the supporting module, and drying inner tubes are symmetrically arranged on both sides of the central drum cavity. The drying inner tubes are interconnected with the central drum cavity, and a drying hot air module is connected to the lower part of the central drum cavity.

[0006] The outer sleeve of the drying inner tube is provided with a dynamic branch pipe, and the dynamic branch pipe can move axially relative to the drying inner tube. The outer side of the dynamic branch pipe is fixedly provided with a fixed screw sleeve. The support module is rotationally limited with a bidirectional threaded rod, and the bidirectional threaded rod is inserted through the fixed screw sleeve and spirally matched with the fixed screw sleeve.

[0007] A worm wheel is coaxially fixedly mounted on the bidirectional threaded rod, a worm is meshedly arranged outside the worm wheel, a servo motor is fixedly mounted on the T-shaped frame plate, the servo motor is transmission-mounted with the worm, and the servo motor drives the worm wheel to rotate through the worm.

[0008] A twisting elastic shaft and a twisting movable shaft are arranged in the central drum cavity, and rubber rotating sleeves are rotatably sleeved on the outside of the twisting elastic shaft and the twisting movable shaft, and the twisting elastic shaft and the twisting movable shaft clamp the sewing wire through the rubber rotating sleeves.

[0009] The two ends of the twisting elastic shaft are respectively fixed with supporting springs, and the supporting springs are fixedly installed on the inner wall surface of the central drum cavity. The upper end of the twisting movable shaft is fixed with a connecting optical axis, and the upper end of the connecting optical axis passes through the top wall of the central drum cavity and extends to the outside of the central drum cavity. The upper end of the connecting optical axis is fixed with a magnetic movable plate.

[0010] The outer sleeve of the connecting optical axis is provided with a return spring, and the return spring applies downward elastic pressure to the connecting optical axis. A limiting track wall is fixedly provided on the upper surface of the central drum cavity, and the limiting track wall limits the magnetic movable plate, so that the magnetic movable plate can only be raised and lowered in the limiting track wall. An electromagnet module is fixedly provided in the limiting track wall, and the electromagnet module is located above the magnetic movable plate. When the electromagnet module is energized, it can attract the magnetic movable plate to move up by magnetic force, and the return spring is compressed at this time.

[0011] A wire roll support arm is fixedly arranged on the surface of the T-shaped frame plate, and a wire roll insertion shaft is arranged on the wire roll support arm. The wire roll insertion shaft is used for placing the sewing wire roll.

[0012] Limiting side ears are fixedly provided at both sides of the upper surface of the dye liquid bin box, and limiting through holes are provided in the limiting side ears, through which the sewing wire passes; a reversing support wheel for supporting the sewing wire is fixedly provided on the surface of the dye liquid bin box, and a limiting pull arm for limiting support of the sewing wire is fixedly provided on the T-shaped frame plate; the reversing support wheel cooperates with the limiting pull arm to limit support the sewing wire so that the sewing wire can pass through the drying inner tube and the dynamic branch tube.

[0013] A sewing process of a sewing device for making a life jacket, the sewing process comprising the following steps:

[0014] Step 1: Put the sewing thread roll on the thread roll insertion shaft, pull out the sewing thread, so that the sewing thread passes through the limiting side ears, the reversing support wheel, the adaptive drying module and the limiting pull arm in sequence, and finally introduce the sewing thread into the mobile sewing module;

[0015] Step 2: Control the vibration pressure rod at the corresponding position to descend, and press the sewing thread into the dye liquid bin box through the V-shaped fork head for dyeing;

[0016] Step 3: The dyed sewing thread enters the adaptive drying module for drying;

[0017] Step 4: Move the sewing module to sew the life jacket using the dyed and dried thread.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The sewing equipment of the present invention cooperates with structures such as a vibration pressure rod, a dye liquid bin box and an adaptive drying module, so that during the process of sewing life jackets, the color of the sewing wire can be freely switched without stopping the machine or disconnecting the line, thereby adapting to the design of life jackets with more complex styles and improving the working efficiency of the sewing equipment.

[0020] The adaptive drying module of the present invention can automatically adjust the position of the dynamic branch pipe according to the sewing speed through structural settings. When the sewing speed is faster, the dynamic branch pipe moves outward to extend the length of the drying inner tube, so that the drying path of the sewing wire is longer. When the moving speed of the wire is accelerated, the path is extended to ensure sufficient drying time; when the sewing speed is reduced, the dynamic branch pipe moves inward to shorten the drying path of the sewing wire to avoid excessive heating of the sewing wire, thereby realizing adaptive and flexible adjustment.

[0021] Through the coordination of structures such as the twisting elastic shaft, the twisting movable shaft and the magnetic movable plate, the sewing wire being dried in the adaptive drying module can be rubbed back and forth, making the sewing wire softer and easier for subsequent sewing. At the same time, the soft wire can improve the drying effect and greatly reduce the moisture content inside the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 for Figure 1 A magnified schematic diagram of area A in the middle.

[0024] Figure 3 It is a schematic diagram of the local structure of the present invention.

[0025] Figure 4 It is a schematic diagram of the local structure of the present invention from another angle.

[0026] Figure 5 for Figure 4 Enlarged schematic diagram of area B in the middle.

[0027] Figure 6 for Figure 4 Enlarged schematic diagram of area C in the middle.

[0028] Figure 7 It is a three-dimensional half-section schematic diagram of the local structure of the present invention.

[0029] Figure 8 for Figure 7 Enlarged schematic diagram of area D in the middle.

[0030] Fig. 9 It is a three-dimensional half-section schematic diagram of the local structure of the present invention from a side view angle.

[0031] Fig.10 for Fig. 9 Enlarged schematic diagram of area E in the middle.

[0032] In the figure: 1, sewing machine bed; 2, mobile sewing module; 3, T-shaped frame plate; 4, dye liquid chamber box; 5, vibration pressure rod; 6, V-shaped fork head; 7, vibration generator; 8, connecting vibration fork; 9, lifting rod; 10, lifting control box; 301, support module; 302, central drum cavity; 303, drying inner tube; 304, drying hot air module; 305, dynamic branch pipe; 306, fixed screw sleeve; 307, two-way threaded rod; 308, worm Wheel; 309, worm; 310, servo motor; 311, twisting elastic shaft; 312, twisting movable shaft; 313, rubber swivel; 314, supporting spring; 315, connecting optical axis; 316, magnetic movable plate; 317, reset spring; 318, limit track wall; 319, electromagnet module; 320, wire reel support arm; 321, wire reel plug shaft; 401, limit side ear; 402, reversing support wheel; 403, limit pull arm. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of 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 of 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.

[0034] The present invention provides a technical solution: a sewing device for making life jackets, such as Figure 1 As shown in FIG. , the sewing machine comprises a sewing machine bed 1 and a mobile sewing module 2 arranged inside the sewing machine bed 1 for sewing life jackets. Figure 2As shown in the figure, a T-shaped frame plate 3 is fixedly arranged on the sewing machine bed 1, and a dye liquid bin box 4 is fixedly arranged on the T-shaped frame plate 3. The number of the dye liquid bin boxes 4 is several groups, and each dye liquid bin box 4 contains dye liquid of different colors. Auxiliary agents such as a fixing agent can be added to the dye liquid to improve the dyeing effect, such as Figure 2 and Figure 3 As shown in FIG. 1 , the dye liquid chamber box 4 is provided with 3 groups of examples.

[0035] like Figure 5 As shown in, a vibrating pressure rod 5 is arranged above the dye liquid bin box 4, and a V-shaped fork head 6 is fixedly arranged at the lower end of the vibrating pressure rod 5, and a vibration generator 7 is arranged above the vibrating pressure rod 5, and a motor and an eccentric wheel are arranged inside the vibration generator 7, and a connecting vibration fork 8 is arranged on the vibration generator 7, and the vibration generator 7 is used to drive the connecting vibration fork 8 to vibrate, and the connecting vibration fork 8 is fixedly installed with the vibrating pressure rod 5, and the vibrating pressure rod 5 is driven to vibrate by the connecting vibration fork 8, and a lifting rod 9 is fixedly installed outside the vibration generator 7, and a lifting control box 10 is fixedly arranged outside the dye liquid bin box 4, and the lifting control box 10 can be a cylinder, or a linear drive structure composed of a rack and a gear, and the lifting control box 10 is used to drive the lifting rod 9 to move up and down, and an adaptive drying module is arranged on the T-shaped frame plate 3; the sewing wire first passes between the dye liquid bin box 4 and the V-shaped fork head 6, and then passes through the adaptive drying module, and finally enters the mobile sewing module 2 to sew the life jacket.

[0036] like Figure 8 As shown in the figure, the adaptive drying module includes a supporting module 301, a central drum cavity 302 and a drying inner tube 303. The supporting module 301 is fixedly mounted on the outer surface of the T-shaped frame plate 3, the central drum cavity 302 is fixedly mounted on the supporting module 301, and the drying inner tubes 303 are symmetrically arranged on both sides of the central drum cavity 302. The drying inner tubes 303 and the central drum cavity 302 are interconnected, and the lower part of the central drum cavity 302 is connected with a drying hot air module 304. The drying hot air module 304 is composed of a blower and an electric heating wire, and the airflow output by the blower is heated by the electric heating wire.

[0037] The outer sleeve of the drying inner tube 303 is provided with a dynamic branch pipe 305, which can move axially relative to the drying inner tube 303. The outer part of the dynamic branch pipe 305 is fixedly provided with a fixed screw sleeve 306. The support module 301 is provided with a two-way threaded rod 307 for rotation limit. The two-way threaded rod 307 is inserted through the fixed screw sleeve 306 and is in spiral engagement with the fixed screw sleeve 306. A worm wheel 308 is coaxially fixedly installed on the two-way threaded rod 307, and a worm 309 is meshed with the outer part of the worm wheel 308. A servo motor 310 is fixedly installed on the T-shaped frame plate 3. The servo motor 310 is transmission-installed with the worm 309. The servo motor 310 drives the worm wheel 308 to rotate through the worm 309. Figure 4 and Figure 6As shown in , both ends of the bidirectional threaded rod 307 are respectively provided with threads, and the spiral directions of the threads are opposite. When the bidirectional threaded rod 307 rotates, it can drive the fixed screw sleeves 306 on both sides of the support module 301 to move synchronously in the opposite direction.

[0038] A twisting elastic shaft 311 and a twisting movable shaft 312 are provided in the central drum cavity 302 , and rubber rotating sleeves 313 are rotatably sleeved on the outside of the twisting elastic shaft 311 and the twisting movable shaft 312 , and the twisting elastic shaft 311 and the twisting movable shaft 312 clamp the sewing wire through the rubber rotating sleeve 313 .

[0039] The two ends of the twisting elastic shaft 311 are respectively fixed with supporting springs 314, and the supporting springs 314 are fixedly installed on the inner wall surface of the central drum cavity 302. The upper end of the twisting movable shaft 312 is fixed with a connecting optical axis 315. The upper end of the connecting optical axis 315 passes through the top wall of the central drum cavity 302 and extends to the outside of the central drum cavity 302. The upper end of the connecting optical axis 315 is fixed with a magnetic movable plate 316.

[0040] The outer sleeve of the connecting optical axis 315 is provided with a return spring 317, and the return spring 317 applies downward elastic pressure to the connecting optical axis 315. A limiting track wall 318 is fixedly provided on the upper surface of the central drum cavity 302. The limiting track wall 318 limits the magnetic movable plate 316, so that the magnetic movable plate 316 can only be raised and lowered in the limiting track wall 318. An electromagnet module 319 is fixedly provided in the limiting track wall 318. The electromagnet module 319 is located above the magnetic movable plate 316. When the electromagnet module 319 is energized, it can attract the magnetic movable plate 316 to move upward by magnetic force, and the return spring 317 is compressed at this time.

[0041] A wire roll support arm 320 is fixedly arranged on the surface of the T-shaped frame plate 3, and a wire roll insertion shaft 321 is arranged on the wire roll support arm 320. The wire roll insertion shaft 321 is used for placing the sewing wire roll.

[0042] Limiting side ears 401 are fixedly provided on both sides of the upper surface of the dye liquid bin box 4, and limiting through holes are provided in the limiting side ears 401, and the sewing wire passes through the above-mentioned limiting through holes. A reversing support wheel 402 for supporting the sewing wire is fixedly provided on the surface of the dye liquid bin box 4, and a limiting pull arm 403 for limiting support of the sewing wire is fixedly provided on the T-shaped frame plate 3; the reversing support wheel 402 cooperates with the limiting pull arm 403 to limit the sewing wire so that the sewing wire passes through the drying inner tube 303 and the dynamic branch pipe 305.

[0043] A sewing process of a sewing device for making a life jacket, the sewing process comprising the following steps:

[0044] Step 1: Put the sewing thread roll on the thread roll insertion shaft 321, pull out the sewing thread, so that the sewing thread passes through the limiting side ear 401, the reversing support wheel 402, the adaptive drying module and the limiting pull arm 403 in sequence, and finally introduce the sewing thread into the mobile sewing module 2;

[0045] Step 2: Control the vibration pressure rod 5 at the corresponding position to descend, and press the sewing thread into the dye liquid bin box 4 through the V-shaped fork head 6 for dyeing;

[0046] Step 3: The dyed sewing thread enters the adaptive drying module for drying;

[0047] Step 4: Move the sewing module 2 to work and sew the life jacket using the dyed and dried thread.

[0048] When the sewing device of the present invention is used, the sewing thread material is a white dyeable thread material, the dyeable sewing thread coil is sleeved on the thread coil insertion shaft 321, and the sewing thread material is pulled out, such as Figure 2 As shown in , the sewing thread passes through the limiting side ear 401, the reversing support wheel 402, the adaptive drying module and the limiting pulling arm 403 in sequence, and is introduced into the mobile sewing module 2.

[0049] When the mobile sewing module 2 is sewing the life jacket, the sewing thread is pulled and moved; Figure 2 As shown in the figure, a plurality of dye liquid bin boxes 4 contain dye liquids of different colors respectively. When a certain color is needed, the lifting control box 10 at the corresponding position is controlled to operate, driving the lifting rod 9 to move downward, and the lifting rod 9 drives the vibration pressure rod 5 and the V-shaped fork 6 to move downward, and the vibration pressure rod 5 presses the wire into the dye liquid through the V-shaped fork 6.

[0050] At this time, the vibration generator 7 drives the vibration pressure rod 5 to vibrate at a high frequency by connecting the vibration fork 8, and drives the sewing wire to vibrate through the vibration, which not only makes the dye liquid stirred under the high-frequency vibration, but also promotes the flow of the dye liquid through the high-frequency vibration, so that the dye liquid can be immersed in the sewing wire faster, thereby improving the dyeing efficiency. Figure 7 and Figure 8 As shown in the figure, under the squeezing of the V-shaped fork 6, the sewing wire is inserted into the dye liquid in a V shape. As the sewing wire moves, when the wire is removed from the dye liquid, the wire is in high-frequency vibration and can shake off the excess dye liquid, thereby avoiding excessive dripping and contamination in the subsequent moving path.

[0051] like Figure 8As shown in the figure, the drying hot air module 304 is running, generating high-temperature drying hot air and inputting it into the central drum cavity 302. After the hot air enters the central drum cavity 302, it flows to the drying inner tubes 303 on both sides of the central drum cavity 302; the dyed sewing thread passes through the dynamic branch pipe 305 and the drying inner tube 303 for drying, and finally enters the mobile sewing module 2 for sewing the life jacket.

[0052] like Figure 6 As shown in , the servo motor 310 is running, which can drive the worm 309 to rotate, so that the worm wheel 308 and the bidirectional threaded rod 307 rotate, and then the cooperation between the bidirectional threaded rod 307 and the fixed screw sleeve 306 can drive the dynamic branch pipe 305 to move axially; when the sewing speed of the mobile sewing module 2 is accelerated, as shown in Figure 8 As shown in , the moving speed of the sewing wire in the drying inner tube 303 is increased. At this time, the dynamic branch pipe 305 is controlled to move away from the drying inner tube 303. The dynamic branch pipe 305 is used to extend the gathering path of the hot air in the drying inner tube 303, so that the drying path of the sewing wire increases after the moving speed is increased, thereby ensuring sufficient drying time; when the sewing speed of the mobile sewing module 2 is reduced, the dynamic branch pipe 305 is controlled to move toward the drying inner tube 303 to shorten the drying path of the sewing wire, thereby avoiding excessive heating of the sewing wire; compared with the method of controlling the hot air temperature output by the drying hot air module 304 to make the drying degree adapt to the moving speed of the sewing wire, the temperature changes relatively slowly, and the structural response is more rapid and flexible.

[0053] like Fig. 9 and Fig.10 As shown in the figure, the thread twisting elastic shaft 311 and the thread twisting movable shaft 312 clamp the sewing wire through the rubber rotating sleeve 313, and the rubber rotating sleeve 313 can rotate without affecting the movement of the wire; the electromagnet module 319 is input with a pulsed on-off current, so that the electromagnet module 319 intermittently generates a magnetic force, and when the electromagnet module 319 generates a magnetic force, it will attract the magnetic attraction movable plate 316 to move upward, thereby driving the thread twisting movable shaft 312 to move upward, and when the magnetic force of the electromagnet module 319 disappears, the thread twisting movable shaft 312 moves down and resets; at this time, the thread twisting movable shaft 312 exhibits an up and down reciprocating motion, and through the elastic clamping cooperation with the thread twisting elastic shaft 311, the sewing wire being dried in the adaptive drying module can be rubbed back and forth, making the sewing wire softer and convenient for subsequent sewing, and at the same time, the soft wire can improve the drying effect.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewing device for making life jackets, comprising a sewing machine bed (1) and a mobile sewing module (2) arranged inside the sewing machine bed (1) for sewing life jackets, characterized in that: The sewing machine bed (1) is fixedly provided with a T-shaped frame plate (3), and a dye liquid storage box (4) is fixedly provided on the T-shaped frame plate (3). The dye liquid storage boxes (4) are provided in a plurality of groups, and each dye liquid storage box (4) contains dye liquids of different colors. A vibration pressure rod (5) is provided above the dye liquid storage box (4), and a V-shaped fork head (6) is fixedly provided at the lower end of the vibration pressure rod (5). A vibration generator (7) is provided above the vibration pressure rod (5), and a connecting vibration fork (8) is provided on the vibration generator (7). The vibration generator (7) is used to drive the connecting vibration fork (8) to vibrate, and the connecting vibration fork (8) and the vibration pressure rod (5) are connected to each other. The vibrating pressure rod (5) is fixedly installed and driven to vibrate by connecting a vibration fork (8); a lifting rod (9) is fixedly installed on the outside of the vibration generator (7); a lifting control box (10) is fixedly arranged on the outside of the dye liquid bin box (4); the lifting control box (10) is used to drive the lifting rod (9) to move up and down; and an adaptive drying module is arranged on the T-shaped frame plate (3); the sewing wire first passes through the dye liquid bin box (4) and between the upper and lower parts of the V-shaped fork (6), then passes through the adaptive drying module, and finally enters the mobile sewing module (2) to sew the life jacket; the adaptive drying module comprises a support module (301), a central drum cavity (302) and a drying inner cavity (303); The support module (301) is fixedly mounted on the outer surface of the T-shaped frame plate (3); the central drum cavity (302) is fixedly mounted on the support module (301); drying inner tubes (303) are symmetrically arranged on both sides of the central drum cavity (302); the drying inner tubes (303) are communicated with the central drum cavity (302); a drying hot air module (304) is communicated with the lower part of the central drum cavity (302); a dynamic branch tube (305) is sleeved on the outside of the drying inner tube (303); the dynamic branch tube (305) is capable of axially moving relative to the drying inner tube (303); the outside of the dynamic branch tube (305) is A fixing screw sleeve (306) is fixedly arranged, and a bidirectional threaded rod (307) is rotationally limitedly arranged in the support module (301), and the bidirectional threaded rod (307) is inserted through the fixing screw sleeve (306) and is spirally matched with the fixing screw sleeve (306); a worm wheel (308) is coaxially fixedly arranged on the bidirectional threaded rod (307), and a worm (309) is meshedly arranged on the outside of the worm wheel (308); a servo motor (310) is fixedly arranged on the T-shaped frame plate (3), and the servo motor (310) is transmission-mounted with the worm (309), and the servo motor (310) drives the worm wheel (308) to rotate through the worm (309).

2. A sewing device for making life jackets according to claim 1, characterized in that: A thread twisting elastic shaft (311) and a thread twisting movable shaft (312) are arranged in the central drum cavity (302); the thread twisting elastic shaft (311) and the thread twisting movable shaft (312) are both rotatably sleeved with a rubber sleeve (313) on their exteriors; the thread twisting elastic shaft (311) and the thread twisting movable shaft (312) clamp the sewing wire via the rubber sleeve (313).

3. A sewing device for making life jackets according to claim 2, characterized in that: Support springs (314) are fixedly provided at both ends of the twisting elastic shaft (311), and the support springs (314) are fixedly installed on the inner wall surface of the central drum cavity (302). A connecting optical axis (315) is fixedly provided at the upper end of the twisting movable shaft (312), and the upper end of the connecting optical axis (315) passes through the top wall of the central drum cavity (302) and extends to the outside of the central drum cavity (302). A magnetic movable plate (316) is fixedly provided at the upper end of the connecting optical axis (315).

4. A sewing device for making life jackets according to claim 3, characterized in that: The outer sleeve of the connecting optical axis (315) is provided with a return spring (317), and the return spring (317) applies downward elastic pressure to the connecting optical axis (315). A limit track wall (318) is fixedly provided on the upper surface of the central drum cavity (302), and the limit track wall (318) limits the magnetic attraction movable plate (316), so that the magnetic attraction movable plate (316) can only move up and down in the limit track wall (318). An electromagnet module (319) is fixedly provided in the limit track wall (318), and the electromagnet module (319) is located above the magnetic attraction movable plate (316). When the electromagnet module (319) is energized, it can attract the magnetic attraction movable plate (316) to move upward by magnetic force, and at this time the return spring (317) is compressed.

5. The sewing device for making life jackets according to claim 1, characterized in that: A wire reel support arm (320) is fixedly arranged on the surface of the T-shaped frame plate (3), and a wire reel insertion shaft (321) is arranged on the wire reel support arm (320), and the wire reel insertion shaft (321) is used for placing a sewing wire reel.

6. The sewing device for making life jackets according to claim 3, characterized in that: Limiting side ears (401) are fixedly provided at both sides of the upper surface of the dye liquid bin box (4), and limiting through holes are provided in the limiting side ears (401), through which the sewing wire passes. A reversing support wheel (402) for supporting the sewing wire is fixedly provided on the surface of the dye liquid bin box (4), and a limiting pull arm (403) for providing limiting support for the sewing wire is fixedly provided on the T-shaped frame plate (3); the reversing support wheel (402) cooperates with the limiting pull arm (403) to provide limiting support for the sewing wire so that the sewing wire passes through the drying inner tube (303) and the dynamic branch tube (305).

7. The sewing process of the sewing equipment for making life jackets according to any one of claims 1 to 6, characterized in that: The sewing process includes the following steps: Step 1: Put the sewing thread roll onto the thread roll insertion shaft (321), pull out the sewing thread, and make the sewing thread pass through the limiting side ear (401), the reversing support wheel (402), the adaptive drying module and the limiting pulling arm (403) in sequence, and finally introduce the sewing thread into the movable sewing module (2); Step 2: Control the vibration pressure rod (5) at the corresponding position to descend, and press the sewing thread into the dye liquid bin box (4) through the V-shaped fork head (6) for dyeing; Step 3: The dyed sewing thread enters the adaptive drying module for drying; Step 4: Move the sewing module (2) to work and sew the life jacket using the dyed and dried thread.

Images