CN210176120U

CN210176120U - Automatic winding device

Info

Publication number: CN210176120U
Application number: CN201920804384.0U
Authority: CN
Inventors: Yong Yan; 严勇
Original assignee: Hangzhou Linan Tongda Decoration Materials Co Ltd
Current assignee: Hangzhou Linan Tongda Decoration Materials Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-03-24
Anticipated expiration: 2029-05-30

Abstract

The utility model relates to the technical field of accessories of printing equipment, in particular to an automatic winding device, which is additionally provided with a tightening control mechanism to reduce the probability of looseness when a printed PVC product is wound, thereby improving the winding effect of the PVC product, namely improving the processing quality of the automatic winding device; the power mechanism comprises a supporting plate, a power shaft and a power mechanism, wherein a rotating hole penetrates through the top of the front end of the supporting plate, a base is arranged at the bottom end of the supporting plate, the front end of the power mechanism is connected with the rear end of the supporting plate, the output end of the power mechanism rotates from the rear side of the supporting plate, penetrates through the rotating hole and extends out of the front side of the supporting plate, and the output end of the power mechanism is concentrically connected with the rear end of the power shaft; the device is characterized by further comprising two groups of supporting plates, two groups of limiting slide rods, a sliding plate and a control roller, wherein the left ends of the two groups of supporting plates are respectively connected with the middle part of the right end of the supporting plate and the top end of the base, and the left side and the right side of the middle part of the top end of the sliding plate are respectively provided with two groups of limiting slide holes in a penetrating manner.

Description

Automatic winding device

Technical Field

The utility model relates to a lithography apparatus auxiliary device's technical field especially relates to an automatic winding device.

Background

As is well known, a printing press is a machine that prints text and images. Modern printing machines are generally composed of mechanisms for plate loading, inking, stamping, paper feeding, etc. Compared with the traditional printing product, the PVC printing product has the advantages of high color saturation, good color effect, high printing line glossiness, gorgeous vision, better spin-resistant property, friction resistance and the like, so that the PVC printing product occupies larger and larger proportion in each field in several years, has good effect in each field, and is widely used in the field of printing of the PVC printing machine, and the automatic winding device is a device for automatically winding the printed PVC product in the working process of the PVC printing machine; the existing automatic winding device comprises a supporting plate, a power shaft and a power mechanism, wherein a rotating hole penetrates through the top of the front end of the supporting plate, a base is arranged at the bottom end of the supporting plate, the front end of the power mechanism is connected with the rear end of the supporting plate, the output end of the power mechanism rotates from the rear side of the supporting plate to penetrate through the rotating hole and extends out of the front side of the supporting plate, the output end of the power mechanism is concentrically connected with the rear end of the power shaft, a rotating bearing is arranged in the rotating hole and is in interference connection with the output end of the power mechanism, and a speed regulating; when the existing automatic winding device is used, when a PVC printing machine works, firstly, the rotating speed of the output end of the power mechanism is adjusted to be matched with the feeding speed of the feeding mechanism through the speed adjusting mechanism, and then the power mechanism is started to roll the printed PVC product through the power shaft; the existing automatic winding device is found in use, the existing automatic winding device is not provided with a tightening control mechanism, so that the probability of looseness of the PVC product which is printed completely is higher, the winding effect of the PVC product is poorer, the processing quality of the automatic winding device is poorer, and the practicability is poorer.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an it takes place not hard up probability in the time of the PVC product rolling that has finished in order to reduce the printing to have add tightening up control mechanism, therefore can improve the package effect of PVC product, improved automatic winding device's processingquality promptly to strengthen the automatic winding device of practicality.

The utility model discloses an automatic winding device, including backup pad, power shaft and power unit, the front end top of backup pad is run through and is provided with the rotation hole, the bottom of backup pad is provided with the base, power unit's front end is connected with the rear end of backup pad, power unit's output rotates from the rear side of backup pad and passes the rotation hole and stretch out to the front side of backup pad, power unit's output and the rear end of power shaft are connected with one heart, be provided with rolling bearing in the rotation hole, rolling bearing is connected with power unit's output interference, the last speed adjusting mechanism that is provided with of power unit; the left ends of the two groups of supporting plates are connected with the middle of the right end of the supporting plate and the top end of the base respectively, the top ends of the two groups of limiting slide bars are connected with the left side and the right side of the upper supporting plate respectively, the bottom ends of the two groups of limiting slide bars are connected with the left side and the right side of the top end of the lower supporting plate respectively, two groups of limiting slide holes are arranged on the left side and the right side of the top end of the sliding plate in a penetrating mode respectively, the two groups of limiting slide holes are sleeved with the two groups of limiting slide bars in a sliding mode respectively, a rotatable mounting shaft is arranged in the middle of the front end of the control roller in a penetrating mode, the rear end of the mounting shaft is fixedly connected with the right side of the front end of the sliding plate, and a protective cap is arranged at.

The utility model discloses an automatic winding device still includes counter weight pole and balancing weight, the bottom of counter weight pole is connected with the top right side of sliding plate, the top of balancing weight is run through and is provided with the counter weight slide opening, counter weight slide opening and counter weight pole slip suit, the bottom of balancing weight is hugged closely with the top of sliding plate.

The utility model discloses an automatic winding device still includes spacing axle, round pin head, slurcam and spacing spring, the front end of spacing axle is run through and is provided with the connecting hole, the circumference lateral wall of connecting hole slides with the circumference lateral wall of power shaft and hugs closely, the regional inside spacing chamber that is provided with in upper portion of spacing axle, the bottom and the connecting hole intercommunication in spacing chamber are provided with the pinhole, the top and the connecting hole intercommunication of power shaft are provided with the cotter way, the bottom of round pin head sets up to the arc profile, the bottom of round pin head slides from the spacing intracavity and passes the pinhole then continue to insert to the cotter way in, the arc profile slides with the bottom in cotter way and hugs closely, the top of round pin head is connected with the bottom of slurcam, the bottom of spacing spring is hugged closely with the top.

The utility model discloses an automatic winding device still includes adjusting screw, swivel ring and regulating plate, the top of spacing axle is provided with the adjustment tank, the bottom and the spacing chamber intercommunication of adjustment tank are provided with and stretch into the hole, the regulating plate slides with spacing chamber and clamps, the top of regulating plate is run through and is provided with adjusting screw hole, adjusting screw and adjusting screw hole spiral shell dress, the circumference lateral wall that stretches into the hole is provided with rotates the groove, the suit is fixed at swivel ring and adjusting screw's top, the swivel ring rotates with rotating the groove and clamps, the bottom of regulating plate is hugged closely with spacing spring's top.

The utility model discloses an automatic winding device still includes auxiliary rod and supplementary balancing weight, the bottom of auxiliary rod is connected with the top of upside backup pad, the top of supplementary balancing weight is run through and is provided with the auxiliary hole, the auxiliary hole slides the suit with the auxiliary rod, and the bottom of supplementary balancing weight is hugged closely with the top of upside backup pad.

The utility model discloses an automatic winding device still includes two sets of linear bearing, two sets of linear bearing clamp with two sets of spacing slide opening are fixed respectively, two sets of linear bearing rotate the suit with two sets of spacing slide bars respectively.

The utility model discloses an automatic winding device still includes the anti-skidding rubber sleeve, the suit is fixed with the control roll to the anti-skidding rubber sleeve.

The utility model discloses an automatic winding device still includes holding ring, positioning threaded rod and location knob, the holding ring slides the suit with the spacing slide bar in right side, the right-hand member of the interior circumference lateral wall of holding ring runs through and is provided with positioning threaded hole, positioning threaded hole and positioning threaded rod spiral shell dress, positioning threaded rod's left end is hugged closely with the right-hand member of the spacing slide bar in right side, positioning knob's left end is connected with positioning threaded rod's right-hand member.

Compared with the prior art, the beneficial effects of the utility model are that: before the PVC product is rolled, the PVC product needs to bypass the control roller, so that the PVC product has a certain supporting effect on the control roller, when the PVC product is rolled by the automatic rolling device, the control roller generates downward extrusion force on the PVC product through the mutual matching of the control roller and the gravity of the sliding plate, the PVC product is tensioned, so that the PVC product is rolled on the rolling device, once the printed PVC product is loosened, the supporting force of the PVC product on the control roller is instantly reduced, at the moment, the sliding plate slides downwards along the two groups of limiting sliding rods under the combined action of the gravity of the sliding plate and the gravity of the control roller until the PVC product is tightly supported by the control roller again, the control roller stops moving downwards, and the PVC product is always kept in a tight state under the extrusion of the control roller and the sliding plate, namely, the PVC product is wound on the rolling device, and the two groups of limiting sliding rods are arranged in an inclined state simultaneously, make the rolling angle of PVC product on the coiling mechanism be parallel with the inclination of two sets of spacing slide bars basically, the size of the rolling tension of PVC product this moment changes at certain within range, and the rolling elasticity of visible PVC product on the coiling mechanism is invariable basically to take place not hard up probability when having reduced the PVC product rolling that the printing finishes, therefore can improve the package effect of PVC product, improved automatic winding device's processingquality promptly, strengthened the practicality.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of the plane A of FIG. 1;

fig. 3 is a schematic view of the connection structure of the support plate and the power mechanism of the present invention;

FIG. 4 is a schematic view of the connection structure of two sets of limiting sliding rods and sliding plates according to the present invention;

in the drawings, the reference numbers: 1. a support plate; 2. a power shaft; 3. a power mechanism; 4. a base; 5. two sets of support plates; 6. two groups of limiting slide bars; 7. a sliding plate; 8. a control roller; 9. two groups of limiting slide holes; 10. a protective cap; 11. a weight lever; 12. a balancing weight; 13. a counterweight slide hole; 14. a limiting shaft; 15. a pin head; 16. a push plate; 17. a limiting spring; 18. a limiting cavity; 19. A pin hole; 20. a pin slot; 21. an arcuate surface; 22. adjusting screws; 23. a rotating ring; 24. an adjusting plate; 25. an adjustment groove; 26. Adjusting the threaded hole; 27. an auxiliary lever; 28. an auxiliary weight block; 29. two groups of linear bearings; 30. an anti-slip rubber sleeve; 31. a positioning ring; 32. positioning a threaded rod; 33. and positioning the knob.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the utility model discloses an automatic winding device, including backup pad 1, power shaft 2 and power mechanism 3, the front end top of backup pad 1 runs through and is provided with the rotation hole, the bottom of backup pad 1 is provided with base 4, the front end of power mechanism 3 is connected with the rear end of backup pad 1, the output of power mechanism 3 rotates from the rear side of backup pad 1 and passes the rotation hole and stretch out to the front side of backup pad 1, the output of power mechanism 3 is connected with the rear end of power shaft 2 is concentric, be provided with rolling bearing in the rotation hole, rolling bearing is connected with the output interference of power mechanism 3, be provided with speed adjusting mechanism on power mechanism 3; the left ends of the two groups of supporting plates 5 are respectively connected with the middle part of the right end of the supporting plate 1 and the top end of the base 4, the top ends of the two groups of limiting slide bars 6 are respectively connected with the left side and the right side of the upper supporting plate, the bottom ends of the two groups of limiting slide bars 6 are respectively connected with the left side and the right side of the top end of the lower supporting plate, the left side and the right side of the middle part of the top end of the sliding plate 7 are respectively provided with two groups of limiting slide holes 9 in a penetrating manner, the two groups of limiting slide holes 9 are respectively sleeved with the two groups of limiting slide bars 6 in a sliding manner, the middle part of the front end of the control roller 8 is rotatably provided with an installation shaft in a penetrating manner, the rear end of the installation shaft is fixedly connected with the right side of the front end of the sliding plate; before the PVC product is rolled, the PVC product needs to bypass the control roller at present, so that the PVC product has a certain supporting effect on the control roller 8, at the moment, when the PVC product is rolled by the automatic rolling device, the control roller 8 generates downward extrusion force on the PVC product through the mutual matching of the control roller 8 and the gravity of the sliding plate, the PVC product is tensioned, so the PVC product is rolled tightly on the rolling device, once the printed PVC product is loosened, the supporting force of the PVC product on the control roller 8 is instantly reduced, at the moment, the sliding plate slides downwards along the two groups of limiting sliding rods under the combined action of the self gravity and the gravity of the control roller 8 until the PVC product is supported tightly by the control roller 8 again, the control roller 8 stops moving downwards, and the PVC product always keeps a tight state under the extrusion of the control roller 8 and the sliding plate, namely, the PVC product is wound tightly on the rolling device, simultaneously two sets of spacing slide bars set up to the tilt state for the rolling angle of PVC product on the coiling mechanism is parallel with the inclination of two sets of spacing slide bars basically, according to physical stress analysis can know, the size of the rolling straining force of PVC product changes at invariable within range this moment, the rolling elasticity of visible PVC product on the coiling mechanism is invariable basically, thereby take place not hard up probability when having reduced the PVC product rolling that the printing finishes through having set up to tighten up control mechanism, therefore can improve the package effect of PVC product, the processingquality of automatic winding device has been improved promptly, the practicality has been strengthened.

The automatic winding device of the utility model also comprises a balance weight rod 11 and a balance weight block 12, the bottom end of the balance weight rod 11 is connected with the right side of the top end of the sliding plate 7, a balance weight sliding hole 13 is arranged at the top end of the balance weight block 12 in a penetrating way, the balance weight sliding hole 13 is sleeved with the balance weight rod 11 in a sliding way, and the bottom end of the balance weight block 12 is clung to the top end of the sliding plate 7; the size of the extrusion force of the control roller 8 to the PVC product can be flexibly adjusted by sleeving the counterweight block on the counterweight rod, so that the adjustment of the winding tightness of the PVC product on the winding device is realized, and the use limitation is reduced.

The utility model discloses an automatic winding device, still include spacing axle 14, round pin head 15, pushing plate 16 and spacing spring 17, the front end of spacing axle 14 runs through and is provided with the connecting hole, the circumference lateral wall of connecting hole slides with the circumference lateral wall of power shaft 2 and hugs closely, spacing chamber 18 is provided with to the regional inside in upper portion of spacing axle 14, the bottom and the connecting hole intercommunication in spacing chamber 18 are provided with pinhole 19, the top and the connecting hole intercommunication of power shaft 2 are provided with cotter way 20, the bottom of round pin head 15 sets up to arc surface 21, the bottom of round pin head 15 slides from spacing chamber 18 and passes pinhole 19 then continue to insert in cotter way 20, arc surface 21 slides with the bottom of cotter way 20 and hugs closely, the top of round pin head 15 is connected with the bottom of pushing plate 16, the bottom of spacing spring 17 is hugged closely with the top; the power shaft drives the limiting shaft to rotate through the pin head, so that the limiting shaft winds the PVC product into a roll, once the printing equipment breaks down and the PVC product is clamped, or the feeding speed of the printing machine is reduced, the PVC product can be subjected to larger pulling force of the winding device, once the pulling force exceeds the bearing range of the PVC product, the pin head is pushed back to move into the limiting cavity by the pin groove, the limiting shaft is separated from the power shaft, the PVC product wound on the roll shaft on the winding device does not rotate, namely the limiting shaft does not synchronously rotate along with the power shaft, the probability that the PVC product is torn off is effectively reduced, after the PVC product is repaired, the limiting spring can push the push plate to limit the pin head in the pin groove by rotating the limiting shaft, and the pin head is limited by the limiting shaft again to enable the limiting shaft and the power shaft to synchronously rotate, therefore, the limiting mechanism improves the use safety of the winding device.

The utility model discloses an automatic winding device, still include adjusting screw 22, swivel ring 23 and regulating plate 24, the top of spacing axle 14 is provided with adjustment tank 25, the bottom of adjustment tank 25 is provided with the hole of stretching into with spacing chamber 18 intercommunication, regulating plate 24 slides with spacing chamber 18 and clamps, the top of regulating plate 24 runs through and is provided with adjusting screw hole 26, adjusting screw 22 and adjusting screw hole 26 spiral shell dress, the circumference lateral wall of stretching into the hole is provided with the rotation groove, swivel ring 23 is fixed with the top of adjusting screw 22 and is nested, swivel ring 23 rotates with the rotation groove and clamps, the bottom of regulating plate 24 is hugged closely with the top of spacing spring 17; make adjusting screw pass through the swivel becket at the adjustment tank internal rotation through rotating adjusting screw, adjusting screw is at the adjusting screw hole internal rotation of regulating plate simultaneously, the regulating plate just changes the elasticity value to spacing spring at spacing intracavity longitudinal movement this moment, the driving force of spacing spring to the round pin head has been changed promptly, the round pin head of spacing axle breaks away from required external force in the round pin inslot of driving shaft this moment is different, consequently can adjust spacing axle's spacing ability according to the size of the bearing capacity of different products, so that corresponding product obtains best rolling effect, thereby the practicality has been strengthened.

The automatic winding device of the utility model also comprises an auxiliary rod 27 and an auxiliary balancing weight 28, the bottom end of the auxiliary rod 27 is connected with the top end of the upper supporting plate, an auxiliary hole is arranged on the top end of the auxiliary balancing weight 28 in a penetrating way, the auxiliary hole is sleeved with the auxiliary rod 27 in a sliding way, and the bottom end of the auxiliary balancing weight 28 is clung to the top end of the supporting plate; can deposit supplementary balancing weight on the auxiliary rod, supplementary balancing weight on the auxiliary rod is very conveniently got and is put moreover, puts into supplementary balancing weight to the counter weight pole on can improve the extrusion force of control roller 8 simultaneously to the use flexibility of coiling mechanism has been strengthened.

The automatic winding device of the utility model also comprises two groups of linear bearings 29, the two groups of linear bearings 29 are respectively fixed and clamped with the two groups of limiting slide holes 9, and the two groups of linear bearings 29 are respectively rotatably sleeved with the two groups of limiting slide rods 6; sliding friction of the sliding plate on the two groups of limiting sliding rods is changed into rolling friction through the two groups of linear bearings, friction force between the sliding plate and the limiting sliding rods is greatly reduced, namely, falling resistance of the sliding plate is reduced, and therefore the extrusion effect of the control roller 8 on the sliding plate on PVC products is improved, and practicability is enhanced.

The automatic winding device of the utility model also comprises an anti-skid rubber sleeve 30, and the anti-skid rubber sleeve 30 is fixedly sleeved with the control roller 8; the friction force between the control roller 8 and the PVC product is increased through the anti-skid rubber sleeve 30, the probability that the control roller 8 slips on the surface of the PVC product is reduced, namely, the probability that the printing surface of the PVC product is abraded is reduced, and therefore the practicability is enhanced.

The utility model discloses an automatic winding device, still include holding ring 31, positioning threaded rod 32 and positioning knob 33, holding ring 31 with right side limit slide bar slip suit, the right-hand member of the interior circumference lateral wall of holding ring 31 runs through and is provided with the positioning screw hole, positioning screw hole and positioning threaded rod 32 spiral shell dress, the left end of positioning threaded rod 32 with the right-hand member of right side limit slide bar hugs closely, the left end of positioning knob 33 is connected with the right-hand member of positioning threaded rod 32; when the coiling mechanism is inoperative, through sliding the holding ring to appointed position and screwing positioning threaded rod, can make the holding ring spacing for the sliding plate is in the position of very convenient operation, and the downside for the sliding plate is used and is provided facility, thereby has strengthened the practicality.

The utility model discloses an automatic winding device, it is at work, when PVC printing machine work, at first through speed adjusting mechanism with the rotational speed of power unit's output adjust to with feeding mechanism's pay-off speed phase-match, then need now walk around control roll 8 with the PVC product before rolling up the PVC product, make the PVC product have certain supporting role to control roll 8, at this moment when automatic winding device is to the PVC product rolling, control roll 8 produces decurrent extrusion force to the PVC product through its gravity mutually supporting with sliding plate 7, the PVC product is taut this moment, therefore the PVC product is rolled up on the winding device, in case the PVC product that the printing finishes is not hard up, then the holding power of PVC product to control roll 8 reduces in the twinkling of an eye, at this moment sliding plate 7 is under the combined action of self gravity and the gravity of control roll 8, along two sets of spacing slide bars, until the PVC product is supported tightly by the control roller 8 again, the control roller 8 stops moving downwards, it can be seen that under the extrusion of the control roller 8 and the sliding plate, the PVC product is always kept in a tight state, i.e. the PVC product is wound tightly on the winding device, meanwhile, two groups of limit slide bars are set to be in an inclined state, so that the winding angle of the PVC product on the winding device is basically parallel to the inclination angles of the two groups of limit slide bars, according to physical stress analysis, the winding tension of the PVC product changes in a constant range, it can be seen that the winding tightness of the PVC product on the winding device is basically constant, the power shaft 2 drives the limit shaft to rotate through the pin head 15 in the winding process, so that the limit shaft 14 winds the PVC product into a package, and once the printing equipment fails to cause the PVC product to be blocked, or when the feeding speed of the printing machine is reduced, at this moment, the PVC product can receive the larger pulling force of the rolling device, once the pulling force exceeds the bearing force range of the PVC product, the pin head 15 is pushed back to move in the limiting cavity by the pin groove, the limiting shaft 14 is separated from the power shaft 2, the roll-mounted PVC product on the rolling device does not rotate at this moment, namely, the limiting shaft 14 does not rotate synchronously with the power shaft 2, the probability that the PVC product is torn off is effectively reduced, after the PVC product is repaired, the limiting shaft 14 is rotated, so that the limiting spring 17 pushes the pushing plate 16 until the pin head 15 is limited in the pin groove, and the pin head 15 is limited by the limiting shaft 14 again, so that the limiting shaft 14 and the power shaft 2 rotate synchronously.

The terms "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An automatic winding device comprises a supporting plate (1), a power shaft (2) and a power mechanism (3), wherein a rotating hole penetrates through the top of the front end of the supporting plate (1), a base (4) is arranged at the bottom end of the supporting plate (1), the front end of the power mechanism (3) is connected with the rear end of the supporting plate (1), the output end of the power mechanism (3) can rotatably penetrate through the rotating hole from the rear side of the supporting plate (1) and extend out of the front side of the supporting plate (1), the output end of the power mechanism (3) is concentrically connected with the rear end of the power shaft (2), a rotating bearing is arranged in the rotating hole and is in interference connection with the output end of the power mechanism (3), and a speed regulating mechanism is arranged on the power mechanism (3; the device is characterized by further comprising a tightening control mechanism, wherein the tightening control mechanism comprises two groups of supporting plates (5), two groups of limiting slide bars (6), a sliding plate (7) and a control roller (8), the left ends of the two groups of supporting plates (5) are respectively connected with the middle part of the right end of the supporting plate (1) and the top end of the base (4), the top ends of the two groups of limiting slide bars (6) are respectively connected with the left side and the right side of the upper supporting plate, the bottom ends of the two groups of limiting slide bars (6) are respectively connected with the left side and the right side of the top end of the lower supporting plate, two groups of limiting slide holes (9) are respectively arranged on the left side and the right side of the middle part of the top end of the sliding plate (7) in a penetrating and penetrating manner, the two groups of limiting slide holes (9) are respectively sleeved with the two groups of limiting slide bars (6) in a sliding manner, the middle part of the front end, the front end of the mounting shaft is provided with a protective cap (10).

2. The automatic winding device according to claim 1, further comprising a weight lever (11) and a weight block (12), wherein the bottom end of the weight lever (11) is connected to the right side of the top end of the sliding plate (7), a weight sliding hole (13) is formed through the top end of the weight block (12), the weight sliding hole (13) is slidably sleeved with the weight lever (11), and the bottom end of the weight block (12) is closely attached to the top end of the sliding plate (7).

3. The automatic winding device according to claim 2, further comprising a limiting shaft (14), a pin head (15), a pushing plate (16) and a limiting spring (17), wherein a connecting hole is formed in the front end of the limiting shaft (14) in a penetrating manner, the circumferential side wall of the connecting hole is in sliding fit with the circumferential side wall of the power shaft (2), a limiting cavity (18) is formed in the upper region of the limiting shaft (14), a pin hole (19) is formed in the bottom end of the limiting cavity (18) and is communicated with the connecting hole, a pin groove (20) is formed in the top end of the power shaft (2) and is communicated with the connecting hole, an arc-shaped surface (21) is formed in the bottom end of the pin head (15), the bottom end of the pin head (15) slides from the limiting cavity (18) to pass through the pin hole (19) and then is continuously inserted into the pin groove (20), and the arc-shaped surface (21) is in sliding fit with, the top end of the pin head (15) is connected with the bottom end of the pushing plate (16), and the bottom end of the limiting spring (17) is tightly attached to the top end of the pushing plate (16).

4. The automatic winding device according to claim 3, further comprising an adjusting screw (22), a rotating ring (23) and an adjusting plate (24), wherein an adjusting groove (25) is formed at the top end of the limiting shaft (14), an extending hole is formed at the bottom end of the adjusting groove (25) and communicated with the limiting cavity (18), the adjusting plate (24) is slidably clamped with the limiting cavity (18), an adjusting threaded hole (26) is formed at the top end of the adjusting plate (24) in a penetrating manner, the adjusting screw (22) is screwed with the adjusting threaded hole (26), a rotating groove is formed in the circumferential side wall of the extending hole, the rotating ring (23) is fixedly sleeved with the top of the adjusting screw (22), the rotating ring (23) is rotatably clamped with the rotating groove, and the bottom end of the adjusting plate (24) is tightly attached to the top end of the limiting spring (17).

5. The automatic winding device according to claim 4, further comprising an auxiliary rod (27) and an auxiliary weight block (28), wherein the bottom end of the auxiliary rod (27) is connected to the top end of the upper supporting plate, an auxiliary hole is formed through the top end of the auxiliary weight block (28), the auxiliary hole is slidably sleeved with the auxiliary rod (27), and the bottom end of the auxiliary weight block (28) is closely attached to the top end of the upper supporting plate.

6. The automatic winding device according to claim 5, characterized in that it further comprises two sets of linear bearings (29), said two sets of linear bearings (29) are respectively fixed and clamped with two sets of limiting slide holes (9), said two sets of linear bearings (29) are respectively rotatably sleeved with two sets of limiting slide rods (6).

7. An automatic winding-up device according to claim 6, characterized in that it further comprises an anti-slip rubber sleeve (30), said anti-slip rubber sleeve (30) being fixedly fitted with the control roller (8).

8. The automatic winding device according to claim 7, further comprising a positioning ring (31), a positioning threaded rod (32) and a positioning knob (33), wherein the positioning ring (31) is slidably sleeved with the right side limit slide rod, a positioning threaded hole is formed in the right end of the inner circumferential side wall of the positioning ring (31) in a penetrating manner, the positioning threaded hole is screwed with the positioning threaded rod (32), the left end of the positioning threaded rod (32) is tightly attached to the right end of the right side limit slide rod, and the left end of the positioning knob (33) is connected with the right end of the positioning threaded rod (32).