Small circular knitting machine capable of conveniently changing threads and use method of small circular knitting machine

Abstract

The invention belongs to the technical field of small circular knitting machines, and particularly relates to a small circular knitting machine convenient to change threads and a using method thereof.The small circular knitting machine comprises a small circular knitting machine body, a first supporting frame, a second supporting frame and a thread inlet frame, the first supporting frame and the thread inlet frame are installed at the top of the small circular knitting machine body, and the second supporting frame is installed at the top of the first supporting frame; the small circular knitting machine has the beneficial effects that the lower end mechanism is arranged at the upper end of the small circular knitting machine, a used bobbin obliquely slides into the material guide rail by pressing the supporting shaft downwards, then slides down through guiding of the material guide rail and is taken down, the bobbin is conveyed through the first conveying belt and the second conveying belt, and the bobbin is supported by the second supporting shaft to move to the first supporting shaft; the bobbin on the second supporting shaft is pushed to the first supporting shaft through the push plate, so that the small circular knitting machine can change threads quickly and conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of small circular knitting machines, and in particular to a small circular knitting machine with convenient line change and a use method thereof. Background Art

[0002] Small circular knitting machines are mainly used to produce seamless knitted clothing fabrics or fabrics of special specifications. They are characterized by being able to reduce consumption and improve fabric utilization, while having lower power and electricity consumption rates, thereby reducing production costs. Small circular knitting machines can effectively reduce the generation of scraps during the production process, especially in clothing production enterprises. The use of small circular knitting machines can further improve fabric utilization. In addition, the application of small circular knitting machines is also reflected in the ability to produce seamless fabrics such as fashionable underwear. This production method is an innovation of the traditional method, and the product has been recognized by domestic and foreign markets. The design of the small circular knitting machine takes shock absorption into consideration. The single-sided small circular knitting machine frame structure with shock absorption effect, including the frame body, support plate, support foot and shock absorption components, not only improves the stability of the support foot, but also effectively reduces the shock of the frame body through the shock absorption components, ensuring the stable operation and service life of the equipment. A wire bobbin will be placed on the small circular knitting machine, and the wire on the wire bobbin needs to be replaced after use. Due to the high position of the wire bobbin support, it is inconvenient to replace the wire bobbin and the wire.

[0003] Therefore, it is necessary to invent a small circular knitting machine with convenient line change and a method for using the same. Summary of the invention

[0004] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0005] A small circular knitting machine with convenient line change comprises a small circular knitting machine body, a first support frame, a second support frame and a wire feed frame, wherein the first support frame and the wire feed frame are respectively mounted on the top of the small circular knitting machine body, and the second support frame is mounted on the top of the first support frame.

[0006] A thread unloading mechanism for unloading the thread bobbin is arranged on the inner side of the second support frame;

[0007] A thread loading mechanism is arranged above the second support frame, and the thread loading mechanism can load the thread bobbin.

[0008] Preferably, the down-line mechanism comprises a support ring and a support block 1, wherein the support ring is mounted on the upper end of the support frame 2, and the support block 1 is mounted on the inner wall of the support frame 2.

[0009] Preferably, support block 2 is rotatably installed on the inner side of support block 1, a pressure rod is installed on the upper end of support block 2, support shaft 1 is installed on the other end of support block 2, electromagnet 1 is rotatably installed on the outer wall of support shaft 1, a wire drum is inserted on support shaft 1, electromagnet 2 is installed on one end of the wire drum, and electromagnet 2 magnetically attracts electromagnet 1.

[0010] Preferably, a connecting ring 1 is further installed on the inner wall of the support ring, a connecting ring 2 is installed on the upper end of the support block 2, and a reset spring is connected between the connecting ring 1 and the connecting ring 2.

[0011] Preferably, a support rod 1 is installed on the outer wall of the support ring, and a material guide rail is installed obliquely on the lower end of the support rod 1.

[0012] Preferably, the upper line mechanism includes conveyor belt 1, a support leg plate and conveyor belt 2, wherein conveyor belt 2 is connected to the upper end of conveyor belt 1, and a support leg plate is installed at the bottom of conveyor belt 1.

[0013] Preferably, support side plates are installed on both sides of the second conveyor belt, a support top plate is installed on the upper end of the support side plate, and a support rod 2 is connected to the upper end of the small circular machine body and the side end of the support top plate.

[0014] Preferably, a motor is installed on the top of the support top plate, a first gear is installed on the output end of the motor, a support seat is rotatably installed on the inner wall of the support top plate, a second gear is installed on the upper end of the support seat, the second gear is meshed and connected to the first gear, and an electric push rod is installed inside the lower end of the support seat.

[0015] Preferably, a connecting plate is installed at the output end of the electric push rod 1, a through hole is opened on the inner wall of the connecting plate, a support shaft 2 is installed at the front end of the connecting plate, a push plate is inserted into the through hole, an electric push rod 2 is installed at the rear end of the connecting plate, and the output end of the electric push rod 2 is connected to the push plate.

[0016] A convenient line changing method for a small circular knitting machine also includes the following steps:

[0017] S1: The motor drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the support seat, the electric push rod 1 and the support shaft 2 to rotate, and adjusts the direction of the support shaft 2;

[0018] S2: The second electric push rod pushes the push plate to move it to the top of the pressure rod. The electric push rod pushes the connecting plate and the push plate, the push plate presses the pressure rod, and the pressure rod presses the second support block, so that the second support block and the first support shaft rotate downward with the connection between the second support block and the first support block as the axis, and the reset spring is stretched;

[0019] S3: Both the electromagnet 1 and the electromagnet 2 are powered off and lose their magnetism. The bobbin and the electromagnet 2 slide downward into the guide rail due to the inclination of the support shaft 1, and then slide out through the guide rail. Finally, the push plate is reset, and the support shaft 2 rises and resets to one end of the conveyor belt 2. The reset spring pulls the support shaft 1 back to a horizontal state.

[0020] S4: Put the full-thread bobbins into the narrow conveyor belt 1 one by one, and convey them to the conveyor belt 2 through the conveyor belt 1, and the latter bobbin pushes the former bobbin to be inserted into the support shaft 2;

[0021] S5: The electric push rod pushes the connecting plate to align the support shaft 2 and the support shaft 1, and the electric push rod 2 pushes the push plate, which pushes the bobbin to insert the bobbin onto the support shaft 1. The electromagnet 1 and the electromagnet 2 are both energized to generate magnetism and are magnetically adsorbed and connected, so that the bobbin will not fall off the support shaft 1 while rotating. Finally, the support shaft 2 rises and resets to one end of the conveyor belt 2 to complete the line change;

[0022] S6: Similarly, all the bobbins in the support ring can be quickly and automatically changed in the same way.

[0023] Compared with existing technologies:

[0024] By setting a thread-removing mechanism at the upper end of the small circular knitting machine, the thread bobbin that has been used up can slide down into the material guide rail by pressing down the support shaft, and then slide down and be removed through the material guide rail;

[0025] A thread-on mechanism is arranged above the thread-off mechanism, and the thread reel is conveyed by conveyor belts one and two, and the thread reel is supported by support shaft two and moved to one position of support shaft, and the thread reel on support shaft two is pushed onto support shaft one by a push plate, so that the small circular knitting machine can change the thread quickly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A structural diagram of a small circular knitting machine with convenient line change and a method for using the same according to the present invention;

[0027] Figure 2 A front view of a small circular knitting machine with convenient wire change and a method for using the same according to the present invention;

[0028] Figure 3 It is a structural diagram of a thread-removing mechanism in a small circular knitting machine with convenient thread-changing and a method for using the same according to the present invention;

[0029] Figure 4 It is a top view of a thread-removing mechanism in a small circular knitting machine with convenient thread-changing and a method for using the same according to the present invention;

[0030] Figure 5 This is a diagram of an installation structure of a support shaft in a small circular knitting machine with convenient line change and a method for using the same according to the present invention;

[0031] Figure 6 This is a diagram of the installation structure of the second supporting shaft in a small circular knitting machine with convenient wire change and a method for using the same according to the present invention.

[0032] In the figure: small circular knitting machine body 1, support frame 11, support frame 2 12, wire feed frame 13, down-line mechanism 2, support ring 21, support block 1 22, support block 2 21, pressure rod 222, connecting ring 1 23, reset spring 231, connecting ring 2 232, support shaft 1 24, electromagnet 1 241, bobbin 25, electromagnet 2 251, support rod 1 26, guide rail 27, up-line mechanism 3, conveyor belt 1 31, support leg plate 311, conveyor belt 2 32, support top plate 33, support side plate 331, support rod 2 332, motor 34, first gear 35, second gear 36, support seat 37, electric push rod 1 371, connecting plate 38, support shaft 2 381, through hole 382, ​​electric push rod 2 39, push plate 391. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Example 1: Figure 1-Figure 5 ;

[0035] It includes a small circular knitting machine body 1, a support frame 11, a support frame 2 12 and a wire feed frame 13. The support frame 11 and the wire feed frame 13 are respectively installed on the top of the small circular knitting machine body 1, and the support frame 2 12 is installed on the top of the support frame 1 1. The inner side of the support frame 2 12 is provided with a wire unloading mechanism 2 for unloading the wire bobbin. By setting the wire unloading mechanism on the upper end of the small circular knitting machine, the wire bobbin that has used up the wire can slide down into the material guide rail by pressing down the support shaft, and then slide down and be removed by the material guide rail.

[0036] The downline mechanism 2 includes a support ring 21 and a support block 22. The support ring 21 is installed on the upper end of the support frame 12. The support ring 21 is used to support and install the support rod 26 and the connecting ring 23. The support block 22 is installed on the inner wall of the support frame 12. The support block 22 is used to support and install the support block 221. The support block 221 is rotatably installed inside the support block 22. The support block 221 is used to support and install the support shaft 24. The upper end of the support block 221 is installed with a pressure rod 222. The pressure rod 222 is used to press down the support block 221 and the support shaft 1 24, so that the support shaft 1 24 tilts downward. The other end of the support block 221 is installed with the support shaft 1 24, and the support shaft 1 24 is used to support the installation of the bobbin 25. The outer wall of the support shaft 1 24 is rotatably installed with an electromagnet 1 241, and the electromagnet 1 241 is used to magnetically absorb the electromagnet 251, so that the bobbin 25 rotates on the support shaft 1 24 while not separating from the support shaft 1 24. The bobbin 25 is inserted into the support shaft 1 24, and the bobbin 25 is inserted into the support shaft 1 24. The wire for the small circular knitting machine is wound on the support ring 21. The wire reel 25 is replaced to facilitate the wire replacement of the small circular knitting machine. An electromagnet 251 is installed at one end of the wire reel 25. The electromagnet 251 is energized to generate magnetic adsorption to connect the electromagnet 1 241. The electromagnet 251 loses its magnetism when it is powered off and detaches from the electromagnet 1 241. The electromagnet 251 magnetically adsorbs the electromagnet 1 241. A connecting ring 23 is also installed on the inner wall of the support ring 21. A connecting ring 232 is installed on the upper end of the support block 221. The connecting ring 23 and the connecting ring 232 are connected. 2 is used to support and connect the reset spring 231. The reset spring 231 is connected between the connecting ring 1 23 and the connecting ring 2 232. When the support shaft 1 24 is pressed down and tilted, the reset support is pulled back by the reset spring 231. The reset spring 231 can be replaced. The outer wall of the support ring 21 is installed with a support rod 1 26. The support rod 1 26 is used to support and install the guide rail 27. The lower end of the support rod 1 26 is tilted to install the guide rail 27. The bobbin 25 falls into the guide rail 27 and slides out through the guide rail 27.

[0037] The motor 34 drives the first gear 35 to rotate, the first gear 35 drives the second gear 36 to rotate, the second gear 36 drives the support seat 37, the electric push rod 1 371 and the support shaft 2 381 to rotate, adjust the direction of the support shaft 2 381, the electric push rod 2 39 pushes the push plate 391 to move the push plate 391 to the top of the pressure rod 222, the electric push rod 1 371 pushes down the connecting plate 38 and the push plate 391, the push plate 391 presses down the pressure rod 222, the pressure rod 222 presses down the support block 221, so that the support block 22 1 and the support shaft 1 24 rotate downward with the connection between the support block 221 and the support block 1 22 as the axis, the reset spring 231 is stretched, the electromagnet 1 241 and the electromagnet 251 are both powered off and lose their magnetism, the bobbin 25 and the electromagnet 2 251 slide downward into the guide rail 27 due to the inclination of the support shaft 1 24, and then slide out through the guide rail 27, and finally the push plate 391 is reset, the support shaft 2 381 rises and resets to one end of the conveyor belt 2 32, and the reset spring 231 pulls the support shaft 1 24 back to a horizontal state.

[0038] Example 2: Figure 1 , Figure 2 and Figure 6 ;

[0039] The invention comprises a small circular knitting machine body 1, a support frame 11, a support frame 2 12 and a wire feed frame 13. The support frame 11 and the wire feed frame 13 are respectively mounted on the top of the small circular knitting machine body 1, the support frame 2 12 is mounted on the top of the support frame 1 11, a thread loading mechanism 3 is arranged above the support frame 2 12, the thread loading mechanism 3 can load the thread reel, and a thread loading mechanism is arranged above the thread lowering mechanism. The thread reel is transported by the conveyor belt 1 and the conveyor belt 2, and the thread reel is supported by the support shaft 2 and moved to a place of the support shaft, and the thread reel on the support shaft 2 is pushed onto the support shaft 1 by the push plate, so that the small circular knitting machine can change the thread quickly and conveniently.

[0040] The upper line mechanism 3 includes a conveyor belt 1 31, a support leg plate 311 and a conveyor belt 2 32. The conveyor belt 2 32 is connected to the upper end of the conveyor belt 1 31. The conveyor belt 1 31 and the conveyor belt 2 32 are used to convey the wire drum 25. The conveyor belt 2 32 is arranged above the support ring 21. The support leg plate 311 is installed at the bottom of the conveyor belt 1 31. The support leg plate 311 can be fixed by bolts. The support leg plate 311 is used to support and install the conveyor belt 1 31. Support side plates 331 are installed on both sides of the conveyor belt 2 32. The support side plates 331 are used to support and install the support top plate 33. The upper end of the support side plates 331 is installed with a support top plate 33. The support top plate 33 is used to support and install the motor 34 and the support seat 37. The upper end of the small circular machine body 1 and the side end of the support top plate 33 are connected with a support rod 2 332. The support rod 2 332 is also used to support and install the support top plate 33 to increase the stability of the support top plate 33.

[0041] A motor 34 is installed on the top of the support top plate 33, and the motor 34 is used to drive the first gear 35 to rotate. The first gear 35 is installed on the output end of the motor 34, and the first gear 35 is used to drive the second gear 36 to rotate. The inner wall of the support top plate 33 is rotatably installed with a support seat 37, and the support seat 37 is used to support the connection plate 38 to rotate. The second gear 36 is installed on the upper end of the support seat 37, and the second gear 36 drives the support seat 37 to rotate. The second gear 36 is meshed and connected with the first gear 35. An electric push rod 1 371 is installed inside the lower end of the support seat 37, and the electric push rod 1 371 is used to push and pull the connection plate 38 to adjust the height position of the support shaft 2 381. The output end of the electric push rod 1 371 is installed with a connection plate 38, and the connection plate 38 is used to The support shaft 2 381 and the electric push rod 2 39 are supported and installed. A through hole 382 is opened on the inner wall of the connecting plate 38. The push plate 391 is placed in the through hole 382. The support shaft 2 381 is installed at the front end of the connecting plate 38. The support shaft 2 381 is used to insert the support bobbin 25. The push plate 391 is inserted into the through hole 382. The push plate 391 can not only push the bobbin 25 on the support shaft 2 381 onto the support shaft 1 24, but also press the pressure rod 222 downward to make the support block 221 and the support shaft 1 24 tilt downward. The electric push rod 2 39 is installed at the rear end of the connecting plate 38. The electric push rod 2 39 is used to push the push plate 391 to adjust the position. The output end of the electric push rod 2 39 is connected to the push plate 391.

[0042] The full bobbins 25 are placed into the narrow conveyor belt 1 31 in turn, and conveyed to the conveyor belt 2 32 through the conveyor belt 1 31. The rear bobbin 25 pushes the front bobbin 25 to be inserted onto the support shaft 2 381. The electric push rod 1 371 pushes down the connecting plate 38 to align the support shaft 2 381 and the support shaft 1 24. The electric push rod 2 39 pushes the push plate 391, and the push plate 391 pushes the bobbin 25 to insert the bobbin 25 into the support shaft 1 24. The electromagnet 1 241 and the electromagnet 251 are both energized to generate magnetism, and are magnetically adsorbed and connected, so that the bobbin 25 will not fall off the support shaft 1 24 while rotating. Finally, the support shaft 2 381 rises and resets to one end of the conveyor belt 2 32 to complete the line change. By analogy, all the bobbins 25 in the support ring 21 can be quickly and automatically changed in the same way.

[0043] The working principle of the present invention is as follows: the motor 34 drives the first gear 35 to rotate, the first gear 35 drives the second gear 36 to rotate, the second gear 36 drives the support seat 37, the electric push rod 1 371 and the support shaft 2 381 to rotate, the direction of the support shaft 2 381 is adjusted, the electric push rod 2 39 pushes the push plate 391 to move the push plate 391 to the top of the pressure rod 222, the electric push rod 1 371 pushes down the connecting plate 38 and the push plate 391, and the push plate 391 presses down the pressure rod 222, the pressure rod 222 presses the support block 221 downward, so that the support block 221 and the support shaft 1 24 rotate downward with the connection between the support block 221 and the support block 1 22 as the rotation axis, the reset spring 231 is stretched, the electromagnet 1 241 and the electromagnet 251 are both powered off and lose their magnetism, the bobbin 25 and the electromagnet 2 251 slide downward into the guide rail 27 due to the inclination of the support shaft 1 24, and then slide out through the guide rail 27, and finally the push plate 391 is reset, and the support The support shaft 281 rises and resets to one end of the conveyor belt 232. The reset spring 231 pulls the support shaft 1 24 back to a horizontal state. The full-line bobbins 25 are sequentially placed into the narrow conveyor belt 1 31 and transported to the conveyor belt 2 32 through the conveyor belt 1 31. The rear bobbin 25 pushes the front bobbin 25 and inserts it onto the support shaft 281. The electric push rod 1 371 pushes down the connecting plate 38, so that the support shaft 281 and the support shaft 1 24 are aligned flush. The electric push rod 2 39 The push plate 391 is pushed, and the push plate 391 pushes the bobbin 25, so that the bobbin 25 is inserted into the support shaft 24, and the electromagnet 1 241 and the electromagnet 2 251 are energized to generate magnetism, and are magnetically adsorbed and connected, so that the bobbin 25 will not fall off the support shaft 24 while rotating. Finally, the support shaft 2 381 rises and resets to one end of the conveyor belt 2 32 to complete the line change. By analogy, all the bobbins 25 in the support ring 21 can be quickly and automatically changed in the same way.

[0044] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A small circular knitting machine with convenient thread change, comprising a small circular knitting machine body (1), a support frame 1 (11), a support frame 2 (12) and a thread feed frame (13), wherein the support frame 1 (11) and the thread feed frame (13) are respectively mounted on the top of the small circular knitting machine body (1), and the support frame 2 (12) is mounted on the top of the support frame 1 (11), characterized in that: A wire unloading mechanism (2) for unloading the wire bobbin is arranged on the inner side of the second support frame (12); A thread loading mechanism (3) is arranged above the second support frame (12), and the thread loading mechanism (3) can load the thread spool.

2. A small circular knitting machine with convenient line change according to claim 1, characterized in that: The down-line mechanism (2) comprises a support ring (21) and a support block one (22); the support ring (21) is mounted on the upper end of the support frame two (12); and the support block one (22) is mounted on the inner wall of the support frame two (12).

3. A small circular knitting machine with convenient line change according to claim 2, characterized in that: The support block 2 (221) is rotatably mounted on the inner side of the support block 1 (22); a pressure rod (222) is mounted on the upper end of the support block 2 (221); a support shaft 1 (24) is mounted on the other end of the support block 2 (221); an electromagnet 1 (241) is rotatably mounted on the outer wall of the support shaft 1 (24); a bobbin (25) is inserted into the support shaft 1 (24); an electromagnet 2 (251) is mounted on one end of the bobbin (25); and the electromagnet 2 (251) magnetically attracts the electromagnet 1 (241).

4. A small circular knitting machine with convenient line change according to claim 3, characterized in that: A connecting ring 1 (23) is also installed on the inner wall of the support ring (21), a connecting ring 2 (232) is installed on the upper end of the support block 2 (221), and a return spring (231) is connected between the connecting ring 1 (23) and the connecting ring 2 (232).

5. The small circular knitting machine with convenient line change according to claim 2, characterized in that: A support rod 1 (26) is installed on the outer wall of the support ring (21), and a material guide rail (27) is installed obliquely at the lower end of the support rod 1 (26).

6. The small circular knitting machine with convenient line change according to claim 1, characterized in that: The upper line mechanism (3) comprises a conveyor belt 1 (31), a support leg plate (311) and a conveyor belt 2 (32); the conveyor belt 2 (32) is connected to the upper end of the conveyor belt 1 (31); and the support leg plate (311) is installed at the bottom of the conveyor belt 1 (31).

7. A small circular knitting machine with convenient line change according to claim 6, characterized in that: Support side plates (331) are installed on both sides of the second conveyor belt (32), and a support top plate (33) is installed on the upper end of the support side plate (331). The upper end of the small circular machine body (1) and the side end of the support top plate (33) are connected to a second support rod (332).

8. The small circular knitting machine with convenient line change according to claim 7, characterized in that: A motor (34) is installed on the top of the support top plate (33), a first gear (35) is installed on the output end of the motor (34), a support seat (37) is rotatably installed on the inner wall of the support top plate (33), a second gear (36) is installed on the upper end of the support seat (37), the second gear (36) is meshed and connected with the first gear (35), and an electric push rod (371) is installed inside the lower end of the support seat (37).

9. A small circular knitting machine with convenient line change according to claim 8, characterized in that: A connecting plate (38) is installed at the output end of the electric push rod 1 (371), a through hole (382) is opened on the inner wall of the connecting plate (38), a supporting shaft 2 (381) is installed at the front end of the connecting plate (38), a push plate (391) is inserted into the through hole (382), and an electric push rod 2 (39) is installed at the rear end of the connecting plate (38), and the output end of the electric push rod 2 (39) is connected to the push plate (391).

10. A convenient line changing method for a small circular knitting machine, characterized in that: The following steps are also included: S1: The motor (34) drives the first gear (35) to rotate, the first gear (35) drives the second gear (36) to rotate, the second gear (36) drives the support seat (37), the electric push rod 1 (371) and the support shaft 2 (381) to rotate, and the direction of the support shaft 2 (381) is adjusted; S2: The second electric push rod (39) pushes the push plate (391), so that the push plate (391) moves to the top of the pressure rod (222), the first electric push rod (371) pushes down the connecting plate (38) and the push plate (391), the push plate (391) presses down the pressure rod (222), the pressure rod (222) presses down the second support block (221), so that the second support block (221) and the first support shaft (24) rotate downward with the connection between the second support block (221) and the first support block (22) as the rotation axis, and the return spring (231) is stretched; S3: The first electromagnet (241) and the second electromagnet (251) are both powered off and lose their magnetism. The bobbin (25) and the second electromagnet (251) slide downward into the guide rail (27) due to the inclination of the first support shaft (24), and then slide out through the guide rail (27). Finally, the push plate (391) is reset, the second support shaft (381) rises and resets to one end of the second conveyor belt (32), and the reset spring (231) pulls the first support shaft (24) back to a horizontal state. S4: Put the full-line bobbins (25) into the narrow conveyor belt 1 (31) in sequence, and convey them to the conveyor belt 2 (32) through the conveyor belt 1 (31), and the latter bobbin (25) pushes the former bobbin (25) to be inserted into the supporting shaft 2 (381); S5: The electric push rod 1 (371) pushes down the connecting plate (38), so that the supporting shaft 2 (381) and the supporting shaft 1 (24) are aligned flush, the electric push rod 2 (39) pushes the push plate (391), and the push plate (391) pushes the bobbin (25), so that the bobbin (25) is inserted into the supporting shaft 1 (24), the electromagnet 1 (241) and the electromagnet 2 (251) are both energized to generate magnetism, and are magnetically adsorbed and connected, so that the bobbin (25) will not fall off the supporting shaft 1 (24) while rotating, and finally the supporting shaft 2 (381) rises and resets to one end of the conveyor belt 2 (32) to complete the line change; S6: Similarly, all the thread spools (25) in the support ring (21) can be quickly and automatically changed in the same way.

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