Anti-skid winding and unwinding device

Abstract

The utility model relates to the technical field of battery production equipment, and provides an anti-skidding winding and unwinding device which comprises a winding drum, a rotating assembly and a limiting assembly, a limiting hole is formed in the end face of the winding drum, the center line of the limiting hole extends in the axial direction of the winding drum, the rotating assembly comprises an air expansion shaft, and the air expansion shaft is connected with the winding drum and can drive the winding drum to rotate. The limiting assembly is arranged on the rotating assembly and comprises a limiting piece extending in the axial direction of the winding drum, the limiting piece can move in the axial direction of the winding drum, the limiting piece is provided with a locking position and a releasing position, and the limiting piece can stretch into the limiting hole to be matched with the limiting hole so that the rotating assembly and the winding drum can be kept relatively static; the limiting piece is separated from the limiting hole so that the rotating assembly and the winding drum can rotate relatively. The anti-skid winding and unwinding device can prevent the winding drum and the inflatable shaft from slipping, so that the stability of equipment can be improved, and the percent of pass of products is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to an anti-slip rewinding and unwinding device. Background Art

[0002] In the sodium and lithium battery industries, pneumatic actuators are commonly used to drive reels for rewinding and unwinding. With the industry's growth, to increase production capacity and reduce costs, the diameter and weight of reels used for rewinding and unwinding have increased significantly, from several hundred kilograms to 1.5 tons and even 2 tons. This change requires pneumatic actuators to provide greater friction to ensure proper operation.

[0003] However, existing technologies can alleviate the problem to a certain extent by increasing the friction coefficient of the contact surface and increasing the air pressure, but they cannot completely solve the resulting slipping phenomenon, which in turn affects the overall production efficiency and quality. Utility Model Content

[0004] The utility model provides a method for solving the defect of slipping of the reel and the air shaft in the prior art, thereby improving the stability of the equipment and further improving the qualified rate of the product.

[0005] The embodiment of the utility model discloses an anti-slip reeling and unreeling device, comprising:

[0006] A reel, wherein a limiting hole is provided on the end surface of the reel, and the center line of the limiting hole extends along the axial direction of the reel;

[0007] A rotating assembly, the rotating assembly comprising an inflatable shaft, the inflatable shaft being connected to the reel and capable of driving the reel to rotate;

[0008] a limiting assembly, the limiting assembly being provided on the rotating assembly, the limiting assembly comprising a limiting member extending along the axial direction of the reel, the limiting member being movable along the axial direction of the reel, the limiting member having a locked position and a released position, wherein in the locked position, the limiting member can extend into the limiting hole and cooperate with the limiting hole, so that the rotating assembly and the reel remain relatively stationary;

[0009] In the release position, the limiting member is separated from the limiting hole, so that the rotating assembly and the reel can rotate relative to each other.

[0010] The anti-skid reeling and unwinding device implemented in the utility model can prevent slipping between the reel and the inflatable shaft, thereby improving the stability of the equipment and further improving the qualified rate of the product.

[0011] In some embodiments, the rotating assembly includes:

[0012] Two inflatable shafts are arranged at intervals along the axial direction of the reel, and the two ends of the reel are respectively sleeved on the two inflatable shafts;

[0013] Two connecting members, each of which is arranged on a side of one of the inflatable shafts away from the other inflatable shaft, and at least one of the connecting members can drive the inflatable shaft connected thereto to rotate.

[0014] In some embodiments, a mounting hole is provided on the rotating assembly, and the limiting member is movably provided in the mounting hole. In the locking position, the mounting hole corresponds to the limiting hole so that the limiting member cooperates with the mounting hole. In the release position, the mounting hole and the limiting hole are staggered.

[0015] In some embodiments, the limiting assembly includes a driving member connected to the limiting member, and the driving member can drive the limiting member to move axially along the reel so that the limiting member switches between the locking position and the releasing position.

[0016] In some embodiments, the limiting assembly includes a sealing cover, which is arranged on the side of the mounting hole away from the limiting hole. A mounting groove is provided in the sealing cover, one end of the driving member is arranged in the mounting groove, and the other end of the driving member is connected to the limiting member.

[0017] In some embodiments, the driving member is a spring, and the spring has a force that causes the limiting member to move in a direction from the rotating assembly toward the reel.

[0018] In some embodiments, an annular protrusion is provided in the mounting groove, and the annular protrusion is spaced apart from the inner peripheral wall of the mounting groove to define an annular groove, and one end of the spring is fixed in the annular groove.

[0019] In some embodiments, the mounting hole includes a first section and a second section, the first section is disposed adjacent to the reel relative to the second section, and a cross-sectional area of ​​the first section is smaller than a cross-sectional area of ​​the second section to construct a stepped surface;

[0020] The position-limiting member includes a stop portion, which is protruding outward from the surface of the position-limiting member. The stop portion is provided in the second section and can abut against the step surface.

[0021] In some embodiments, the stop portion and the limiting member are spaced apart from each other near the end surface, and the other end of the spring is sleeved on the limiting member and fixedly connected to the stop portion.

[0022] In some embodiments, there are multiple limit assemblies, multiple limit holes, and multiple mounting holes, and the multiple limit assemblies correspond one to one to the multiple mounting holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the anti-slip rewinding and unwinding device provided by the utility model in the locked position.

[0025] Figure 2 It is a schematic diagram of the anti-slip retracting and unreeling device provided by the utility model in the released position.

[0026] Figure 3 It is a structural schematic diagram of the reel of the anti-slip reeling and winding device provided by the utility model.

[0027] Figure 4 This is a schematic diagram of the end surface of the reel of the anti-slip rewinding and unwinding device provided by the utility model

[0028] Figure 5 This is a structural diagram of the rotating assembly and the limiting assembly of the anti-slip rewinding and unwinding device provided by the utility model

[0029] Reference numerals:

[0030] 100. Anti-slip rewinding and unwinding device;

[0031] 1. Reel; 11. Limiting hole;

[0032] 2. Rotating assembly; 21. Inflatable shaft; 22. Connector; 221. Mounting hole; 2211. First section; 2212. Second section; 2213. Step surface;

[0033] 3. Limiting assembly; 31. Limiting member; 311. Stop portion; 32. Driving member; 33. Sealing cover; 331. Mounting groove; 3311. Annular protrusion; 3312. Annular groove. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1 to 5 As shown, an embodiment of the present utility model discloses an anti-slip reeling and unreeling device 100 , comprising a reel 1 , a rotating assembly 2 and a limiting assembly 3 .

[0036] A limiting hole 11 is provided on the end surface of the reel 1 , and the center line of the limiting hole 11 extends along the axial direction of the reel 1 .

[0037] The rotating assembly 2 includes an inflatable shaft 21 , which is connected to the reel 1 and can drive the reel 1 to rotate.

[0038] The limiting assembly 3 is provided on the rotating assembly 2 . The limiting assembly 3 includes a limiting member 31 extending along the axial direction of the reel 1 . The limiting member 31 is movable along the axial direction of the reel 1 . The limiting member 31 has a locking position and a releasing position.

[0039] The limiting member 31 can extend into the limiting hole 11 and cooperate with the limiting hole 11 so that the rotating assembly 2 and the reel 1 remain relatively stationary.

[0040] In the release position, the limiting member 31 is separated from the limiting hole 11 so that the rotating assembly 2 and the reel 1 can rotate relative to each other.

[0041] For example, for the convenience of description, the technical solution of the present application is further described below by taking the axial direction of the reel 1 as being consistent with the left-right direction.

[0042] The spool 1 extends axially in a left-right direction. Two annular end surfaces of the spool 1 are provided with blind, left-right limiting holes 11. The inflatable shaft 21 protrudes upon high-pressure inflation, and partially retracts upon deflation. After inflation, the shaft 21 forms an interference fit with the spool 1, creating a high static friction force between the two. Rotating the shaft 21 can drive the spool 1. After deflation, the spool 1 and shaft 21 can be disassembled for maintenance.

[0043] The limiting assembly 3 is provided on the rotating assembly 2 , and the limiting member 31 extends in the left-right direction and is movable in the left-right direction.

[0044] In the related art, when the weight of the material wound on the reel 1 is heavy, the reel 1 and the inflatable shaft 21 may slip, thereby affecting the operation of the reel 1 .

[0045] When the anti-slip reeling and unwinding device 100 implemented by the present invention is in operation, when the limiting member 31 is in the locked position, the limiting member 31 extends into the limiting hole 11 on the end face of the reel 1. At this time, under the action of the limiting member 31, the relative position of the inflatable shaft 21 and the reel 1 is locked, so that there is no relative sliding between the inflatable shaft 21 and the reel 1. Even if the weight of the material wound on the reel 1 is large, the normal operation of the reel 1 can be guaranteed.

[0046] When the lock needs to be released, the limiting member 31 only needs to be moved out of the limiting hole 11 to return it to the release position, and the rotating assembly 2 and the reel 1 are separated.

[0047] Therefore, the anti-slip rewinding and unwinding device 100 implemented in the present invention can prevent slipping between the reel 1 and the inflatable shaft 21, so that the tension applied by the reel 1 on the material remains stable, thereby improving the stability of the equipment and further improving the qualified rate of the product.

[0048] Optionally, the cross section of the limiting member 31 is circular, square, hexagonal, etc., and the shape of the cross section of the limiting hole 11 is consistent with the shape of the cross section of the limiting member 31 .

[0049] In some embodiments, the rotating assembly 2 includes two inflatable shafts 21 and two connecting members 22. The two inflatable shafts 21 are spaced apart along the axial direction of the reel 1, and the two ends of the reel 1 are respectively sleeved on the two inflatable shafts 21. Each connecting member 22 is provided on the side of one of the inflatable shafts 21 facing away from the other inflatable shaft 21, and at least one connecting member 22 can drive the inflatable shaft 21 connected thereto to rotate.

[0050] For example, Figure 1 and Figure 2 As shown, two inflatable shafts 21 are spaced apart in the left-right direction, and each inflatable shaft 21 is connected to a connector 22. The left side of the left inflatable shaft 21 is provided with a connector 22, and the right side of the right inflatable shaft 21 is provided with a connector 22. The limit assembly 3 is provided on the connector 22, and each connector 22 is provided with a limit assembly 3.

[0051] The anti-slip reeling and unwinding device 100 of the present invention includes a motor, with an inflatable shaft 21 connected to the motor serving as the active component, and another inflatable shaft 21 serving as the driven component. When the motor drives the inflatable shaft 21 connected to it to rotate, the inflatable shaft 21 and the connecting member 22 on the other side rotate together, assisting the operation of the reel 1. Alternatively, the anti-slip reeling and unwinding device 100 may include two motors, each connected to both inflatable shafts 21. In this case, both inflatable shafts 21 serve as active components.

[0052] The anti-slip rewinding and unwinding device 100 of the present invention features two pneumatic shafts 21 located at either end of the reel 1, in either an active-passive or dual-active configuration. Each pneumatic shaft 21 has a connector 22 that drives its rotation. This arrangement improves overall system stability, provides a simple structure, and facilitates control.

[0053] Optionally, the connecting member 22 and the inflatable shaft 21 are fixedly connected by bolts or are integrally formed.

[0054] In some embodiments, a mounting hole 221 is provided on the rotating assembly 2, and the limiting member 31 is movably provided in the mounting hole 221. In the locking position, the mounting hole 221 corresponds to the limiting hole 11 so that the limiting member 31 cooperates with the mounting hole 221. In the release position, the mounting hole 221 is staggered with the limiting hole 11.

[0055] For example, Figure 5 As shown, the connector 22 is provided with a mounting hole 221. In the locked position, the mounting hole 221 aligns with the stopper hole 11 on the end face of the reel 1. At this point, the stopper 31 can extend from the mounting hole 221 and enter the stopper hole 11, forming a mechanical locking mechanism. This prevents the reel 1 from rotating relative to the inflatable shaft 21, thus ensuring that the reel 1 and the inflatable shaft 21 do not slip even under heavy loads.

[0056] In the release position, the mounting hole 221 is not aligned with the limiting hole 11, that is, there is a certain misalignment between the two. At this time, the limiting member 31 is separated from the limiting hole 11, and when the inflatable shaft 21 is deflated, the reel 1 can rotate relative to the rotating assembly 2.

[0057] The anti-slip reeling and unwinding device 100 implemented in the present invention allows operators to easily switch the state of the reel 1 as needed. To lock the rotating assembly 2 and the reel 1, the connecting member 22 is rotated so that the mounting hole 221 is aligned with the limiting hole 11. To release the lock between the rotating assembly 2 and the reel 1, the limiting member 31 is disengaged from the limiting hole 11, and the connecting member 22 is then rotated so that the mounting hole 221 is offset from the limiting hole 11, thereby separating the connecting member 22 from the reel 1. Thus, the operator can switch the state of the reel 1 with a simple action, without the need for complex tools or procedures, thereby simplifying the operation process and reducing the difficulty of operation.

[0058] In some embodiments, the limiting assembly 3 includes a driving member 32 connected to the limiting member 31. The driving member 32 can drive the limiting member 31 to move axially along the reel 1 so that the limiting member 31 switches between a locked position and a released position.

[0059] In this embodiment, the driving member 32 is used to control the switching between the locking position and the release position of the limiting member 31. The driving member 32 can more accurately control the movement of the limiting member 31, thereby ensuring the stability and reliability of the anti-slip rewinding and unwinding device 100.

[0060] It should be noted that when the limiting member 31 switches from the released position to the locked position, the connecting member 22 is rotated. At this time, the limiting member 31 is squeezed by the end surface of the reel 1 and is completely located within the mounting hole 221. When the mounting hole 221 corresponds to the limiting hole 11, the limiting member 31 can be extended into the limiting hole 11 by controlling the driving member 32. When the limiting member 31 switches from the locked position to the released position, the limiting member 31 is disengaged from the limiting hole 11 by controlling the driving member 32.

[0061] Optionally, the driving member 32 has various structures, and it only needs to drive the limiting member 31 to move along the left and right directions. For example, the driving member 32 is a spring, a cylinder, etc.

[0062] In some embodiments, the limiting assembly 3 includes a sealing cover 33, which is arranged on the side of the mounting hole 221 away from the limiting hole 11. A mounting groove 331 is provided in the sealing cover 33, one end of the driving member 32 is provided in the mounting groove 331, and the other end of the driving member 32 is connected to the limiting member 31.

[0063] For example, Figure 1 and Figure 2 As shown, the sealing cover 33 is used to protect the components therein from the influence of the external environment. The mounting hole 221 is a through hole. One side of the mounting hole 221 corresponds to the limiting hole 11, and the other side of the mounting hole 221 is provided with a sealing cover 33. On the left rotating assembly 2, the sealing cover 33, the mounting hole 221 and the reel 1 are arranged in sequence from left to right. On the right rotating assembly 2, the reel 1, the mounting hole 221 and the sealing cover 33 are arranged in sequence from left to right. The opening of the mounting groove 331 in the sealing cover 33 is arranged toward the mounting hole 221, and the driving member 32 is arranged in the cavity formed by the mounting groove 331 and the mounting hole 221.

[0064] The anti-slip rewinding and unwinding device 100 implemented in the present invention utilizes the sealing cover 33 to not only protect the driving member 32 and other components from being invaded by dust and moisture, but also enhance the overall structural stability of the rotating assembly 2 .

[0065] Optionally, the sealing cover 33 is detachably connected to the connecting member 22 , for example, the sealing cover 33 is connected to the connecting member 22 via bolts.

[0066] In some embodiments, the driving member 32 is a spring, and the spring has a force that causes the limiting member 31 to move in a direction from the rotating assembly 2 to the reel 1 .

[0067] For example, Figure 1 and Figure 2 As shown, the driving member 32 is a compression spring. Whether in the released position or the locked position, the compression spring always provides a force for the limiting member 31 to move from the rotating assembly 2 toward the reel 1. Specifically, the compression spring on the left side of the reel 1 always provides a force for the limiting member 31 to move rightward, and the compression spring on the right side of the reel 1 always provides a force for the limiting member 31 to move leftward.

[0068] The anti-slip rewinding and unwinding device 100 implemented in the present invention can quickly extend the limiting member 31 into the limiting hole 11 when needed through the continuous force provided by the compression spring, thereby ensuring the stability of the device during operation.

[0069] In some embodiments, an annular protrusion 3311 is provided in the mounting groove 331 . The annular protrusion 3311 is spaced apart from the inner peripheral wall of the mounting groove 331 to define an annular groove 3312 . One end of the spring is fixed in the annular groove 3312 .

[0070] For example, Figure 1 and Figure 5 As shown, in the sealing cover 33 on the left side of the reel 1, an annular protrusion 3311 is provided on the left side wall of the mounting groove 331. In the sealing cover 33 on the right side of the reel 1, an annular protrusion 3311 is provided on the right side wall of the mounting groove 331.

[0071] The anti-slip rewinding and unwinding device 100 implemented in the present invention can fix the position of the spring by setting the annular groove 3312, thereby preventing the spring from being offset or twisted during operation, thereby improving the stability and reliability of the limit member 31 when moving toward the reel 1.

[0072] In some embodiments, the mounting hole 221 includes a first section 2211 and a second section 2212 . The first section 2211 is disposed adjacent to the reel 1 relative to the second section 2212 . The cross-sectional area of ​​the first section 2211 is smaller than that of the second section 2212 to construct a stepped surface 2213 .

[0073] The limiting member 31 includes a stop portion 311 , which protrudes outward from the surface of the limiting member 31 . The stop portion 311 is provided in the second section 2212 and can abut against the step surface 2213 .

[0074] For example, Figure 5 As shown, the mounting hole 221 is a stepped hole, the first section 2211 is provided at one end of the mounting hole 221 adjacent to the reel 1 , and the second section 2212 is provided at one end of the mounting hole 221 adjacent to the sealing cover 33 .

[0075] A stop portion 311 is provided on the outer circumference of the position-limiting member 31. The cross-sectional area of ​​the stop portion 311 is larger than the cross-sectional area of ​​the position-limiting member 31, and the cross-sectional area of ​​the stop portion 311 is larger than the cross-sectional area of ​​the first section 2211. When the position-limiting member 31 moves within the mounting hole 221, the stop portion 311 can only move within the second section 2212. The stop portion 311 abuts against the stepped surface 2213 of the mounting hole 221, thereby preventing the position-limiting member 31 from being removed from the mounting hole 221.

[0076] Optionally, when in the locked position, the stop portion 311 abuts against the step surface 2213, so that a portion of the limit member 31 is located in the limit hole 11, and another portion of the limit member 31 is located in the mounting hole 221, preventing the limit member 31 from completely slipping into the limit hole 11, thereby facilitating the rotating component 2 to transmit torque to the reel 1.

[0077] The anti-slip rewinding and unwinding device 100 implemented in the present invention can limit the limiting member 31 when the limiting member 31 moves along the mounting hole 221, thereby ensuring that the limiting member 31 will not fall off from the mounting hole 221 under any operating state, thereby ensuring the stability and reliability of the limiting member 31 during operation.

[0078] In some embodiments, the stop portion 311 is spaced apart from an end surface of the limiting member 31 adjacent to the mounting groove 331 , and the other end of the spring is sleeved on the limiting member 31 and fixedly connected to the stop portion 311 .

[0079] For example, Figure 5 As shown, there is a certain distance between the stop portion 311 and the end surface of the limiting member 31 , so that the end of the spring connected to the limiting member 31 is sleeved on the limiting member 31 , and the end surface of the spring abuts against the stop portion 311 .

[0080] Optionally, a clamping piece is provided on the end surface of the stop portion 311 , and the spring is fixed to the stop portion 311 via the clamping piece.

[0081] It should be noted that when the limit member 31 switches from the released position to the locked position, the connector 22 is rotated. At this time, the limit member 31 is squeezed by the end surface of the reel 1 and is completely located within the mounting hole 221. When the mounting hole 221 and the limit hole 11 are aligned, the limit member 31 can automatically extend into the limit hole 11 under the action of the spring. When the limit member 31 switches from the locked position to the released position, after deflating the inflatable shaft 21, the connector 22 and the inflatable shaft 21 are moved in the left-right direction away from the reel 1 to disengage the limit member 31 from the limit hole 11.

[0082] In some embodiments, there are multiple limit components 3 , limit holes 11 , and mounting holes 221 , and the multiple limit components 3 correspond to the multiple mounting holes 221 one by one.

[0083] For example, Figures 1 to 4 As shown, a plurality of mounting holes 221 are arranged at intervals along the circumference of the connecting member 22 , a plurality of limiting holes 11 are arranged at intervals along the circumference of the reel 1 , and a limiting component 3 is provided in each mounting hole 221 .

[0084] Optionally, the number of the limiting components 3, the limiting holes 11, and the mounting holes 221 is 2-6, for example, 2, 4, or 6.

[0085] It should be noted that in the battery production process, coating, rolling, slitting and other processes all require a reel for winding and unwinding. The anti-slip winding and unwinding device 100 implemented in the present invention can be applied to any process among coating, rolling and slitting.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A non-slip rewinding and unwinding device, characterized in that: include: A reel, wherein a limiting hole is provided on the end surface of the reel, and the center line of the limiting hole extends along the axial direction of the reel; A rotating assembly, the rotating assembly comprising an inflatable shaft, the inflatable shaft being connected to the reel and capable of driving the reel to rotate; a limiting assembly, the limiting assembly being provided on the rotating assembly, the limiting assembly comprising a limiting member extending along the axial direction of the reel, the limiting member being movable along the axial direction of the reel, the limiting member having a locked position and a released position, wherein in the locked position, the limiting member can extend into the limiting hole and cooperate with the limiting hole, so that the rotating assembly and the reel remain relatively stationary; In the release position, the limiting member is separated from the limiting hole, so that the rotating assembly and the reel can rotate relative to each other.

2. The anti-slip reeling and unreeling device according to claim 1, characterized in that: The rotating assembly comprises: Two inflatable shafts are arranged at intervals along the axial direction of the reel, and the two ends of the reel are respectively sleeved on the two inflatable shafts; Two connecting members, each of which is arranged on a side of one of the inflatable shafts away from the other inflatable shaft, and at least one of the connecting members can drive the inflatable shaft connected thereto to rotate.

3. The anti-slip reeling and unreeling device according to claim 1, characterized in that: The rotating assembly is provided with a mounting hole, and the limiting member is movably provided in the mounting hole. In the locking position, the mounting hole corresponds to the limiting hole so that the limiting member cooperates with the mounting hole. In the releasing position, the mounting hole and the limiting hole are staggered.

4. The anti-slip rewinding and unwinding device according to claim 3, characterized in that: The limiting component includes a driving member connected to the limiting member, and the driving member can drive the limiting member to move along the axial direction of the reel so that the limiting member switches between the locking position and the releasing position.

5. The anti-slip reeling and unreeling device according to claim 4, characterized in that: The limiting assembly includes a sealing cover, which is arranged on a side of the mounting hole away from the limiting hole. A mounting groove is provided in the sealing cover, one end of the driving member is arranged in the mounting groove, and the other end of the driving member is connected to the limiting member.

6. The anti-slip reeling and unreeling device according to claim 5, characterized in that: The driving member is a spring, and the spring has a force that causes the limiting member to move in a direction from the rotating assembly toward the reel.

7. The anti-slip reeling and unreeling device according to claim 6, characterized in that: An annular protrusion is provided in the installation groove. The annular protrusion is spaced apart from the inner peripheral wall of the installation groove to define an annular groove. One end of the spring is fixed in the annular groove.

8. The anti-slip reeling and unreeling device according to claim 6, characterized in that: The mounting hole comprises a first section and a second section, the first section is arranged adjacent to the reel relative to the second section, and the cross-sectional area of ​​the first section is smaller than the cross-sectional area of ​​the second section to form a stepped surface; The position-limiting member includes a stop portion, which is protruding outward from the surface of the position-limiting member. The stop portion is provided in the second section and can abut against the step surface.

9. The anti-slip reeling and unreeling device according to claim 8, characterized in that: The stop portion and the limiting member are spaced apart from each other and are adjacent to the end surface. The other end of the spring is sleeved on the limiting member and fixedly connected to the stop portion.

10. The anti-slip reeling and unreeling device according to claim 3, characterized in that: There are multiple limit assemblies, multiple limit holes, and multiple mounting holes, and the multiple limit assemblies correspond to the multiple mounting holes in a one-to-one manner.

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