Copper foil wrapping mechanism capable of automatically wrapping copper foil and use method of copper foil wrapping mechanism

Abstract

The invention provides a copper foil wrapping mechanism capable of automatically wrapping copper foil and a use method of the copper foil wrapping mechanism, and belongs to the technical field of copper foil wrapping processing. The side end of the copper foil wrapping machine body is fixedly connected with a butt joint frame, and the butt joint frame can be used for machining wrapped copper foil; the discharging mechanism comprises a motor, a swing head, a winding device, a fixing frame, two sliding rods, two electromagnetic switches, two sliding frames, two supporting tables and a first spring, the motor is fixedly connected to the interior of the copper foil wrapping machine body and can drive the winding device to rotate, the swing head is fixedly connected to the output end of the motor, the sliding frames are loosened by controlling the electromagnetic switches, and the winding device is driven by the first spring to rotate. According to the copper foil wrapping machine, after the two sliding frames are separated from each other, a copper foil wrapping winding drum on the winding surface slides into the next procedure through the calandria, when a worker uses the copper foil wrapping machine to wrap copper foil on the winding drum, manual operation is not needed, and therefore during large-scale operation, the copper foil machining efficiency is improved, and meanwhile the installation hidden danger of the worker is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of copper foil coating processing, and in particular relates to a copper foil coating mechanism for automatic copper foil coating and a use method thereof. Background Art

[0002] Copper foil is a cathodic electrolytic material, a thin, continuous metal foil deposited on the substrate of the circuit board, which serves as the conductor of the PCB. It is easy to adhere to the insulating layer, accept the printed protective layer, and form a circuit pattern after corrosion. Copper foil has low surface oxygen characteristics and can be attached to various substrates, such as metals, insulating materials, etc., and has a wide temperature range of use.

[0003] After searching, it was found that a Chinese patent with the authorization announcement number CN109494539B disclosed a copper foil wrapping machine, including a copper foil wrapping machine body, the copper foil wrapping machine body including a shell, a copper foil feeding mechanism fixedly installed on the upper part of the shell, the copper foil feeding mechanism including a loading plate, a motor and a feeding platform, the copper foil pressing mechanism including a pressing cylinder, the output end of the pressing cylinder is fixedly connected with a pressing block, and the pressing block is fixedly connected to the feeding platform. The device can reduce manual fatigue, can effectively press the bonding surface of the copper foil, reduce labor costs, and improve product production efficiency.

[0004] However, the above technical solution can effectively press the bonding surface of the copper foil, reduce labor costs, and improve product production efficiency. However, in the prior art, when using a copper foil wrapping machine to wrap copper foil on a roll, workers are required to install the roll on the winding rack of the copper foil wrapping machine or disassemble it, which affects the workers' processing efficiency during batch operations and increases the problem of hidden dangers for workers in installation. Summary of the invention

[0005] The object of the present invention is to provide a copper foil wrapping mechanism for automatic copper foil wrapping and a method for using the same, aiming to solve the problem in the prior art that when a copper foil wrapping machine is used to wrap copper foil on a roll, workers are required to install the roll on a winding rack of the copper foil wrapping machine or disassemble it, thereby affecting the workers' processing efficiency during batch operations and increasing the hidden dangers of workers' installation.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A copper foil wrapping mechanism for automatic copper foil wrapping, comprising:

[0008] A copper foil wrapping machine body, wherein a side end of the copper foil wrapping machine body is fixedly connected with a docking frame;

[0009] A material unloading mechanism, the material unloading mechanism comprises: a motor, a swing head, a winding sieve, a fixed frame, two slide bars, two electromagnetic switches, two slides, two support platforms and a first spring, the motor is fixedly connected to the copper foil cladding machine body, the swing head is fixedly connected to the output end of the motor, the winding sieve is rotatably connected to one end of the swing head, the fixed frame is fixedly connected to the side end of the copper foil cladding machine body, the two slide bars are fixedly connected to the fixed frame, the two electromagnetic switches are fixedly connected to the fixed frame, the two slides are slidably connected to the surfaces of the two slide bars, the two support platforms are respectively fixedly connected to one end of the two slides, and the two first springs are fixedly connected between the two slides;

[0010] The feeding mechanism comprises: a sliding tube, a swing rod, a prying rod, a rocker rod, a baffle, a mounting block and a second spring, the sliding tube being fixedly connected to one end of the docking frame, the swing rod being fixedly connected to the lower end of the sliding tube, the prying rod being rotatably connected to the lower end of the swing rod, the rocker rod being rotatably connected to one end of the prying rod, the baffle being rotatably connected to the upper end of the rocker rod, the mounting block being fixedly connected to the surface of the prying rod, and the second spring being fixedly connected between the mounting block and the sliding tube.

[0011] As a preferred solution of the present invention, one end of the prying rod is fixedly connected to a protective pad, one end of the winding yoke is provided with a rubber head, and the blocking piece is slidably connected to the sliding tube.

[0012] As a preferred solution of the present invention, the side ends of the two slides are fixedly connected to two telescopic rods, the circumferential surfaces of the four telescopic rods are fixedly connected to a swivel seat, and the circumferential surfaces of the four telescopic rods are slidably connected to a third spring.

[0013] As a preferred solution of the present invention, four mounting rods are fixedly connected to the lower end of the copper foil cladding machine body, the lower ends of the four mounting rods are fixedly connected to a support frame, and the upper end of the support frame is fixedly connected to five fixing blocks.

[0014] As a preferred solution of the present invention, a mounting frame is fixedly connected to the side end of the copper foil wrapping machine body, a storage groove is provided at the side end of the mounting frame, a slide groove is provided at the upper end of the mounting frame, a baffle is slidably connected in the slide groove, and a pull rod is fixedly connected to the upper end of the baffle.

[0015] As a preferred solution of the present invention, a retaining frame is fixedly connected to the side end of the sliding tube, and sensors are fixedly connected to the retaining frame and the side end of the copper foil cladding machine body, and transparent layers are provided on the surfaces of the two sensors.

[0016] As a preferred solution of the present invention, a row of pipes is fixedly connected to a side end of the support frame, and a support column is fixedly connected to a side end of the support frame.

[0017] As a preferred solution of the present invention, two mounting frames are fixedly connected to the side ends of the support frame, and prompt rods are fixedly connected to the upper ends of the two mounting frames, and reflective layers are provided on the surfaces of the two prompt rods.

[0018] As a preferred solution of the present invention, the winding sieve is slidably connected between two support platforms, and the protective pad cooperates with one end of the winding sieve.

[0019] As a preferred embodiment of the present invention,

[0020] A copper foil wrapping mechanism for automatic copper foil wrapping and a method for using the same, comprising:

[0021] S1. Place the roll in the slide tube, and then run the motor to drive the swing head to rotate, so that the winding sieve pushes the protective pad to swing downward, and the swing rod drives the baffle to the lower end, so that the copper foil roll slides through the slide tube to the surface of the winding sieve, and then the winding sieve moves to between the two support platforms, and then the two electromagnetic switches are operated to respectively resist the two slides to stabilize the rotation of the winding sieve, so as to wrap the roll;

[0022] S2. After the roll is wrapped, the swing head can be driven to rotate by running the motor. After the winding sieve pushes away the two support platforms, the slide can be released by controlling the electromagnetic switch to separate the two slides. The copper foil roll on the surface of the winding sieve slides into the next process through the row pipe. The worker can slide out the baffle and place the maintenance tools in the storage slot for daily maintenance.

[0023] S3. When the winding sieve swings to one side, the copper foil reel can push the rotating seat to retract inward, so that the copper foil reel can slide into the sliding tube. When the copper foil reel slides on the surface of the winding sieve, the prying rod is reset under the elastic force of the second spring, so that the baffle slides in the sliding tube to resist the reel. The sensor installed on the surface of the sliding tube can sense the position of the winding sieve, so that the reel in the sliding tube can slide into the surface of the winding sieve.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. First, place the reel in the slide tube, and then run the motor to drive the swing head to rotate, so that the winding sieve pushes the protective pad to swing downward, and the swing rod drives the baffle to the lower end, so that the copper foil reel slides into the surface of the winding sieve through the slide tube, and then runs the winding sieve to move between the two support platforms, and then runs the two electromagnetic switches to respectively resist the two slides to stabilize the rotation of the winding sieve, so as to wrap the reel. After the reel is wrapped, the swing head can be driven to rotate by running the motor. After the winding sieve pushes the two support platforms, the slide is released by controlling the electromagnetic switch, so that the two slides can be separated from each other, and the copper foil reel on the surface of the winding sieve slides into the next process through the row pipe. When workers use the copper foil wrapping machine to wrap the reel with copper foil, there is no need for workers to operate, thereby increasing the processing efficiency of copper foil during large-scale operations, while reducing the hidden dangers of workers' installation.

[0026] 2. When the rubber head at one end of the winding sieve pushes the protective pad upward, the collision between the winding sieve and the prying rod can be reduced, and the service life of the winding sieve and the prying rod can be increased. The row pipe installed on the support frame can slide the copper foil roll into the next process, so that the workers can package it again. The prompt rod installed on the side of the copper foil wrapping machine can be used to isolate the equipment to prevent workers from directly contacting the copper foil wrapping machine. The storage slot opened in the copper foil wrapping machine can be used for workers to place maintenance tools for daily operation.

[0027] 3. The sensor installed on the side end of the retaining frame can sense the reel. When the winding embankment and the sliding tube are aligned, the reel can accurately slide to the surface of the winding embankment. The support column installed on the support frame can increase the firmness of the sliding tube. When the reel is sliding, it can prevent the whole equipment from shaking. The reflective layer installed on the surface of the prompt rod can be used to remind the position of the equipment so that the workers can judge the safe distance from the equipment, thereby facilitating the workers' operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 This is a first-view stereogram of the present invention;

[0030] Figure 2 It is an exploded view of the present invention;

[0031] Figure 3 It is an exploded view of the feeding mechanism in the present invention;

[0032] Figure 4 It is an exploded view of the feeding mechanism in the present invention;

[0033] Figure 5 is a cross-sectional view of the sliding pipe in the present invention;

[0034] Figure 6 is an enlarged view of the prying rod in the present invention;

[0035] Figure 7 is an enlarged view of the baffle in the present invention;

[0036] Figure 8 It is an enlarged view of the copper foil wrapping machine in the present invention;

[0037] Fig. 9 For the present invention Figure 8 A partial enlarged view of the middle A;

[0038] Fig.10 It is a stereoscopic diagram from a second viewing angle of the present invention;

[0039] Fig.11 This is a stereoscopic diagram from a third viewing angle of the present invention.

[0040] In the figure: 1. Copper foil wrapping machine body; 2. Support frame; 3. Row pipe; 4. Mounting frame; 501. Swing head; 502. Motor; 503. Winding sieve; 504. Slide frame; 505. Slide pipe; 506. Electromagnetic switch; 507. Fixed frame; 508. Slide rod; 509. Support table; 510. First spring; 511. Swing rod; 512. Block plate; 513. Swing rod; 514. Pry rod; 515. Mounting block; 516. Second spring; 6. Baffle plate; 7. Docking frame; 8. Prompt rod; 9. Support column; 10. Mounting rod; 11. Pull rod; 12. Telescopic rod; 13. Rotating seat; 14. Block frame; 15. Protective pad; 16. Third spring; 17. Fixed block; 18. Mounting frame; 19. Slide groove; 20. Storage groove; 21. Sensor. DETAILED DESCRIPTION

[0041] 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.

[0042] Example 1

[0043] See also Figure 1-Figure 11 , the present invention provides the following technical solutions:

[0044] A copper foil wrapping mechanism for automatic copper foil wrapping, comprising:

[0045] A copper foil wrapping machine body 1, a side end of which is fixedly connected with a docking frame 7, which can be used to process the copper foil wrapping;

[0046] The unloading mechanism includes: a motor 502, a swing head 501, a winding sieve 503, a fixed frame 507, two slide bars 508, two electromagnetic switches 506, two slides 504, two support platforms 509 and a first spring 510. The motor 502 is fixedly connected to the copper foil cladding machine body 1 and can drive the winding sieve 503 to rotate. The swing head 501 is fixedly connected to the output end of the motor 502, so that the winding sieve 503 can rotate on the surface of the swing head 501. The winding sieve 503 is rotatably connected to one end of the swing head 501 and can be used to place the roll. The fixed frame 507 is fixedly connected to the side end of the copper foil cladding machine body 1 and can be used to install the slide 504. The two slide bars 508 are fixedly connected to the fixed frame 507, so that the slide 504 can slide in the fixed frame 507. The two electromagnetic switches 506 are fixedly connected to the fixed frame 507 and can be used to fix the slide 504. The two slides 504 are slidably connected to the surfaces of the two slide bars 508, and can be used to drive the support platform 509 to move. The two support platforms 509 are respectively fixedly connected to one end of the two slides 504, and can be used to support the winding sieve 503 to rotate. The two first springs 510 are fixedly connected between the two slides 504, and can drive the slides 504 to reset;

[0047] The feeding mechanism includes: a slide tube 505, a swing rod 511, a prying rod 514, a swing rod 513, a baffle 512, a mounting block 515 and a second spring 516. The slide tube 505 is fixedly connected to one end of the docking frame 7 and can be used to place the reel. The swing rod 511 is fixedly connected to the lower end of the slide tube 505 and can be used to install the prying rod 514. The prying rod 514 is rotatably connected to the lower end of the swing rod 511 and can drive the baffle 512 to slide in the slide tube 505. The swing rod 513 is rotatably connected to one end of the prying rod 514 and can drive the baffle 512 to move up and down. The baffle 512 is rotatably connected to the upper end of the swing rod 513 and can be used to limit the reel. The mounting block 515 is fixedly connected to the surface of the prying rod 514 and can be used to install the second spring 516. The second spring 516 is fixedly connected between the mounting block 515 and the sliding tube 505 , and can be used to be installed between the prying rod 514 and the sliding tube 505 .

[0048] like Figure 2 and Figure 4 As shown, one end of the prying rod 514 is fixedly connected to a protective pad 15, which can reduce the wear caused by the collision between the prying rod 514 and the winding sieve 503. A rubber head is provided at one end of the winding sieve 503, which can be used to protect one end of the prying rod 514. The blocking piece 512 is slidably connected to the sliding tube 505, and the blocking piece 512 can be used to limit the reel.

[0049] like Figure 3As shown, two telescopic rods 12 are fixedly connected to the side ends of the two slides 504, so that the rotating seat 13 can move at one end of the slide 504. The circumferential surfaces of the four telescopic rods 12 are fixedly connected to the rotating seat 13, which can be used to limit the reel. The circumferential surfaces of the four telescopic rods 12 are slidably connected to the third spring 16, which can be used to reset the rotating seat 13.

[0050] like Figure 2 and Figure 8 As shown, the lower end of the copper foil cladding machine body 1 is fixedly connected with four mounting rods 10, which can be used to stably support the copper foil cladding machine body 1. The lower ends of the four mounting rods 10 are fixedly connected with a support frame 2, which can be used to stabilize the copper foil cladding machine body 1. The upper end of the support frame 2 is fixedly connected with five fixing blocks 17, which can fix the support frame 2 on the ground.

[0051] like Figure 7 and Fig. 9 As shown, the side end of the copper foil wrapping machine body 1 is fixedly connected with a mounting frame 18, which can be used to install the baffle 6. The side end of the mounting frame 18 is provided with a storage groove 20, which can be used to store maintenance tools. The upper end of the mounting frame 18 is provided with a slide groove 19, which can be used to install the baffle 6. The baffle 6 is slidably connected in the slide groove 19, which can be used to block the storage groove 20. The upper end of the baffle 6 is fixedly connected with a pull rod 11, which can facilitate workers to install or remove the baffle 6.

[0052] like Figure 4 and Fig.10 As shown, the side end of the slide tube 505 is fixedly connected with a retaining frame 14, and the sensor 21 can be installed on the surface of the slide tube 505. The retaining frame 14 and the side end of the copper foil cladding machine body 1 are both fixedly connected with sensors 21, which can be used to sense the roll. The surfaces of the two sensors 21 are provided with transparent layers, which can be used to protect the surfaces of the sensors 21.

[0053] like Figure 2 As shown, the side end of the support frame 2 is fixedly connected with a row pipe 3, which can guide the copper foil roll to the next process. The side end of the support frame 2 is fixedly connected with a support column 9, which can be used to stably support the docking frame 7.

[0054] like Figure 2 As shown, two mounting brackets 4 are fixedly connected to the side ends of the support frame 2, and a reminder rod 8 can be fixedly mounted on the surface of the support frame 2. The upper ends of the two mounting brackets 4 are fixedly connected with reminder rods 8, which can be used to limit the position of workers and equipment. The surfaces of the two reminder rods 8 are provided with a reflective layer, which can be used to remind workers of the safe position of the equipment.

[0055] like Figure 2 , Figure 3 and Figure 6As shown, the winding sieve 503 is slidably connected between the two support platforms 509 and can be used to receive the copper foil roll. The protective pad 15 cooperates with one end of the winding sieve 503 to protect the protective pad 15 and the winding sieve 503.

[0056] The working principle and use process of the present invention are as follows: first, the reel is placed in the slide tube 505, and then the motor 502 is operated to drive the swing head 501 to rotate, so that the reel 503 pushes the protective pad 15 to swing downward, and the swing rod 513 drives the baffle 512 to the lower end, so that the copper foil reel slides onto the surface of the reel 503 through the slide tube 505, and then the reel 503 is operated to move between the two support platforms 509, and then the two electromagnetic switches 506 are operated to respectively resist the two slides 504 to stabilize the rotation of the reel 503, so as to achieve the purpose of The wrapping of the roll, after the roll is wrapped, the swing head 501 can be driven to rotate by running the motor 502, and after the winding sieve 503 pushes away the two support platforms 509, the slide 504 is released by controlling the electromagnetic switch 506, so that the two slides 504 can be separated from each other, and the copper foil wrapped roll on the surface of the winding sieve 503 slides into the next process through the row pipe 3. When workers use the copper foil wrapping machine to wrap the roll with copper foil, there is no need for workers to operate, thereby increasing the processing efficiency of the copper foil during large-scale operations, and reducing the hidden dangers of workers in installation.

[0057] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A copper foil wrapping mechanism for automatic copper foil wrapping, characterized in that: include: A copper foil wrapping machine body (1), wherein a side end of the copper foil wrapping machine body (1) is fixedly connected to a docking frame (7); A material unloading mechanism, the material unloading mechanism comprising: a motor (502), a swing head (501), a winding sieve (503), a fixed frame (507), two slide bars (508), two electromagnetic switches (506), two slide frames (504), two support platforms (509) and a first spring (510), wherein the motor (502) is fixedly connected to a copper foil cladding machine body (1), the swing head (501) is fixedly connected to an output end of the motor (502), and the winding sieve (503) is rotatably connected to the swing head (501). The fixing frame (507) is fixedly connected to one end of the copper foil cladding machine body (1), the two sliding bars (508) are fixedly connected in the fixing frame (507), the two electromagnetic switches (506) are fixedly connected in the fixing frame (507), the two sliding frames (504) are slidably connected to the surfaces of the two sliding bars (508), the two supporting platforms (509) are respectively fixedly connected to one end of the two sliding frames (504), and the two first springs (510) are fixedly connected between the two sliding frames (504); The feeding mechanism comprises: a sliding tube (505), a swing rod (511), a prying rod (514), a rocking rod (513), a blocking piece (512), a mounting block (515) and a second spring (516); the sliding tube (505) is fixedly connected to one end of a docking frame (7); the swing rod (511) is fixedly connected to the lower end of the sliding tube (505); the prying rod (514) is rotatably connected to the lower end of the swing rod (511); the rocking rod (513) is rotatably connected to one end of the prying rod (514); the blocking piece (512) is rotatably connected to the upper end of the rocking rod (513); the mounting block (515) is fixedly connected to the surface of the prying rod (514); and the second spring (516) is fixedly connected between the mounting block (515) and the sliding tube (505).

2. The automatic copper foil wrapping mechanism according to claim 1, characterized in that: One end of the prying rod (514) is fixedly connected to a protective pad (15), one end of the winding yoke (503) is provided with a rubber head, and the blocking piece (512) is slidably connected to the inside of the sliding tube (505).

3. The automatic copper foil wrapping mechanism according to claim 2, characterized in that: The side ends of the two slides (504) are fixedly connected to two telescopic rods (12), the circumferential surfaces of the four telescopic rods (12) are fixedly connected to a swivel seat (13), and the circumferential surfaces of the four telescopic rods (12) are slidably connected to a third spring (16).

4. The automatic copper foil wrapping mechanism according to claim 3, characterized in that: The lower end of the copper foil cladding machine body (1) is fixedly connected to four mounting rods (10), the lower ends of the four mounting rods (10) are fixedly connected to a support frame (2), and the upper end of the support frame (2) is fixedly connected to five fixing blocks (17).

5. The automatic copper foil wrapping mechanism according to claim 4, characterized in that: The side end of the copper foil wrapping machine body (1) is fixedly connected to a mounting frame (18), the side end of the mounting frame (18) is provided with a storage groove (20), the upper end of the mounting frame (18) is provided with a slide groove (19), a baffle (6) is slidably connected in the slide groove (19), and the upper end of the baffle (6) is fixedly connected to a pull rod (11).

6. The automatic copper foil wrapping mechanism according to claim 5, characterized in that: The side end of the sliding tube (505) is fixedly connected to a retaining frame (14), and the retaining frame (14) and the side end of the copper foil cladding machine body (1) are both fixedly connected to sensors (21), and the surfaces of the two sensors (21) are provided with transparent layers.

7. The automatic copper foil wrapping mechanism according to claim 6, characterized in that: The side end of the support frame (2) is fixedly connected to a row of pipes (3), and the side end of the support frame (2) is fixedly connected to a support column (9).

8. The automatic copper foil wrapping mechanism according to claim 7, characterized in that: Two mounting frames (4) are fixedly connected to the side ends of the support frame (2), and prompt rods (8) are fixedly connected to the upper ends of the two mounting frames (4), and the surfaces of the two prompt rods (8) are provided with a reflective layer.

9. The automatic copper foil wrapping mechanism according to claim 8, characterized in that: The winding sieve (503) is slidably connected between the two support platforms (509), and the protective pad (15) cooperates with one end of the winding sieve (503).

10. The automatic copper foil wrapping mechanism according to claim 9, applied to the automatic copper foil wrapping mechanism according to any one of claims 1 to 9 and the use method thereof, characterized in that: The steps include: S1, by placing the reel in the slide tube (505), and then running the motor (502) to drive the swing head (501) to rotate, so that the reel (503) pushes the protective pad (15) to swing downward, and the swing rod (513) drives the blocking piece (512) to the lower end, so that the copper foil reel slides onto the surface of the reel (503) through the slide tube (505), and then the reel (503) is moved between the two support platforms (509), and then the two electromagnetic switches (506) are operated to respectively press against the two slides (504) to stabilize the rotation of the reel (503), so as to wrap the reel; S2. After the roll is wrapped, the swing head (501) can be driven to rotate by running the motor (502). After the winding sieve (503) pushes away the two support platforms (509), the slide (504) can be released by controlling the electromagnetic switch (506). After the two slides (504) are separated from each other, the copper foil roll on the surface of the winding sieve (503) slides into the next process through the row pipe (3). After the baffle (6) is slid out, the worker can place the maintenance tools in the storage groove (20) to facilitate the worker's daily maintenance; S3. When the winding sieve (503) swings to one side, the copper foil reel can push the rotating seat (13) to retract inward, so that the copper foil reel can slide into the sliding tube (505). After the copper foil reel slides on the surface of the winding sieve (503), the prying rod (514) is reset under the elastic force of the second spring (516), so that the blocking piece (512) slides in the sliding tube (505) to press against the reel. The sensor (21) installed on the surface of the sliding tube (505) can sense the position of the winding sieve (503), so that the reel in the sliding tube (505) can slide into the surface of the winding sieve (503).

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