Pay-off device

Abstract

The utility model relates to the technical field of pay-off equipment, and discloses a pay-off device. The pay-off device comprises a frame body mechanism; the driving mechanism is installed on the frame body mechanism, and the driving mechanism can support the spool and drive the spool to rotate around the axis of the spool; the tensioner is installed on the frame body mechanism through the adjusting mechanism, a wire on the bobbin is wound around a guide wheel of the tensioner, the tensioner is electrically connected with the driving mechanism, and the adjusting mechanism can adjust the distance between the tensioner and the bobbin. According to the pay-off device, the tension of each wire rod can be accurately adjusted, the reserved length of each wire rod can be flexibly adjusted, and the winding quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wire-paying equipment, in particular to a wire-paying device. Background Art

[0002] The winding process of a disc motor requires the coordinated operation of a pay-off and winding device. The spool of enameled wire is mounted in the pay-off device. The length and tension of the wire between the spool and the winding device are crucial. Generally, the wire length between the spool and the winding device should be appropriate, neither too long nor too short. The tension during the wire feeding process should also be appropriate to avoid wire skipping, tangling, wire stretching, and uneven winding caused by excessive or insufficient tension.

[0003] In the related art, the pay-off device is provided with a tension adjustment mechanism, which is used to adjust the tension of the wire. However, due to the complex structure of the tension adjustment mechanism, it is not convenient to adjust the wire length reserved between the spool and the winding device, which in turn affects the winding quality. Utility Model Content

[0004] The purpose of the utility model is to provide a wire-paying device that can accurately adjust the tension of each wire and flexibly adjust the reserved length of each wire to ensure the winding quality.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] Pay-off device, comprising:

[0007] Frame structure;

[0008] A driving mechanism is mounted on the frame mechanism, and the driving mechanism is capable of supporting the spool and driving the spool to rotate around its own axis;

[0009] An adjusting mechanism and a tensioner, wherein the tensioner is mounted on the frame mechanism through the adjusting mechanism, the wire on the spool is wound around the guide wheel of the tensioner, the tensioner is electrically connected to the driving mechanism, and the adjusting mechanism can adjust the distance between the tensioner and the spool.

[0010] As an optional solution, the adjustment mechanism includes:

[0011] A clamping block connected to the frame mechanism, the clamping block being provided with a first through hole, and a slit being provided on a side wall of the first through hole;

[0012] a first support rod, the tensioner being mounted on the first support rod, and the first through hole being passed through the first support rod;

[0013] A first locking member is provided, wherein the first locking member passes through the first side wall and the second side wall on both sides of the slit, so that the first side wall and the second side wall clamp the first support rod.

[0014] As an optional solution, the clamping block is provided with a second through hole, and the adjustment mechanism further comprises:

[0015] a second support rod, the second support rod being connected to the frame mechanism, the clamping block being sleeved on the second support rod and being capable of rotating and / or sliding relative to the second support rod;

[0016] A second locking piece, wherein the second locking piece can pass through the clamping block and abut against the second support rod.

[0017] As an optional solution, a threaded hole and a second through hole are provided on the clamping block, the second support rod passes through the through hole, the threaded hole is communicated with the second through hole, and the second locking piece is threadedly connected to the threaded hole.

[0018] As an optional solution, the pay-off device includes at least two driving mechanisms and a corresponding number of tensioners, each of the tensioners is electrically connected to one driving mechanism, and the wire on the spool on each driving mechanism is wound around the guide wheel of one tensioner.

[0019] As an optional solution, the frame mechanism includes a first frame and a second frame, the driving mechanism is installed on the first frame, the adjustment mechanism is installed on the second frame, and the distance between the first frame and the second frame is adjustable.

[0020] As an optional solution, the pay-off device further includes a fixed wire wheel, which is mounted on the frame mechanism, and the wire passing through the tensioner is wound around the fixed wire wheel.

[0021] As an optional solution, the driving mechanism includes:

[0022] A support assembly comprising a driving roller and a driven roller arranged in parallel and spaced apart, wherein both the driving roller and the driven roller are rotatably mounted on the frame mechanism, and the spool can be supported between the driving roller and the driven roller;

[0023] The driving assembly can drive the active roller to rotate.

[0024] As an optional solution, the support assembly further includes a limiting member, and the limiting member is provided at both ends of the active roller and the driven roller, and the limiting member is configured to limit the spool along the axial direction.

[0025] As an optional solution, the driving mechanism also includes a transmission assembly, which includes a driving wheel, a driven wheel and a flexible member. The driving wheel is connected to the output end of the driving assembly, the driven wheel is connected to the driving roller, and the flexible member is wrapped around the driving wheel and the driven wheel.

[0026] The beneficial effects of the utility model are:

[0027] The wire-reeling device of this embodiment has a structure in which, during the wire-reeling process, a spool is supported on a driving mechanism, and the end of the wire on the spool is wound around a guide wheel of a tensioner and finally extends to the winding device. The tensioner applies a certain force to the wire through the guide wheel to keep the wire at a certain tension. When the winding device is winding at different speeds, the swing arm of the tensioner swings, and the tensioner can obtain the swing angle of the swing arm. When the swing arm swings to the limit position, the tensioner sends a signal to the driving mechanism, and the driving mechanism adjusts the wire-reeling speed according to the signal to match the wire-reeling speed of the winding device, ensuring that the wire tension is maintained within an appropriate range. The tensioner is mounted on the frame mechanism through an adjustment mechanism, so that the distance between the tensioner and the corresponding spool can be easily adjusted, thereby adjusting the position of the swing arm relative to the spool without changing the structure of the tensioner itself, and further adjusting the reserved length of the wire between the spool and the winding device. In other words, the wire-reeling device of this embodiment can flexibly adjust the reserved length of the wire to an appropriate length and ensure that the tension during the winding process is maintained within an appropriate range, thereby improving the winding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a pay-off device provided in a specific embodiment of the utility model;

[0029] Figure 2 It is a side view of the pay-off device provided in a specific embodiment of the utility model;

[0030] Figure 3 It is a top view of the adjustment mechanism provided in a specific embodiment of the utility model.

[0031] In the picture:

[0032] 10. Frame mechanism; 11. First frame; 12. Second frame; 13. Third frame;

[0033] 20. Driving mechanism; 21. Support assembly; 211. Active roller; 212. Driven roller; 213. Limiting member; 22. Driving assembly; 23. Transmission assembly; 231. Active pulley; 232. Driven pulley; 233. Flexible member;

[0034] 30. Adjustment mechanism; 31. Clamping block; 311. First through hole; 312. Slit; 313. First side wall; 314. Second side wall; 315. Second through hole; 316. Threaded hole; 32. First support rod; 33. First locking member; 34. Second support rod; 35. Second locking member;

[0035] 40. Tensioner; 41. Tensioner body; 42. Swing arm; 43. Guide wheel;

[0036] 50. Fixed reel; 51. Winding groove;

[0037] 60. Spool;

[0038] 70. Wire. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0040] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0043] This embodiment provides a wire-paying device, which can cooperate with a wire-winding device to wind wires around an iron core to form a winding.

[0044] like Figure 1 As shown, the unwinding device includes a frame mechanism 10, a driving mechanism 20, an adjusting mechanism 30, a tensioner 40 and a controller (not shown in the figure). The driving mechanism 20 is mounted on the frame mechanism 10, and the driving mechanism 20 can support the spool 60 and drive the spool 60 to rotate around its own axis. The driving mechanism 20 is electrically connected to the controller, and the controller can adjust the rotation speed of the spool 60 driven by the driving mechanism 20. The tensioner 40 is an existing component, which includes a tensioner body 41, a swing arm 42, an elastic member and a guide wheel 43, wherein the tensioner body 41 is electrically connected to the controller to achieve electrical connection with the driving mechanism 20. One end of the swing arm 42 is pivotally connected to the tensioner body 41, and the guide wheel 43 is connected to the end of the swing arm 42 away from the tensioner body 41. An elastic member is connected between the tensioner body 41 and the swing arm 42, allowing the swing arm 42 to remain stationary when the guide wheel 43 is not under force. When the guide wheel 43 is under force, the swing arm 42 can swing relative to the tensioner body 41 within a certain angle range, and the tensioner body 41 can detect the swing angle of the swing arm 42. The tensioner 40 is mounted on the frame mechanism 10 via the adjustment mechanism 30. The wire 70 on the spool 60 is wound around the guide wheel 43 of the tensioner 40. The adjustment mechanism 30 can adjust the distance between the tensioner 40 and the spool 60.

[0045] In the wire-releasing device of this embodiment, during the wire-releasing process, the spool 60 is supported on the driving mechanism 20, and the end of the wire 70 on the spool 60 is wound around the guide wheel 43 of the tensioner 40 and finally extends to the winding device. The tensioner 40 applies a certain force to the wire 70 through the guide wheel 43, so that the wire 70 maintains a certain tension. In the process of the winding device winding at different speeds, the swing arm 42 of the tensioner 40 swings, and the tensioner 40 can obtain the swing angle of the swing arm 42. When the swing arm 42 swings to the limit position, the tensioner 40 The tensioner 40 sends a signal to the drive mechanism 20, and the drive mechanism 20 adjusts the pay-off speed according to the signal so that the pay-off speed matches the wire speed of the winding device, ensuring that the tension of the wire 70 remains within an appropriate range. The tensioner 40 is mounted on the frame mechanism 10 via the adjustment mechanism 30, so that the distance between the tensioner 40 and the corresponding spool 60 can be easily adjusted, thereby adjusting the position of the swing arm 42 relative to the spool 60 while keeping the structure of the tensioner 40 unchanged, and further adjusting the reserved length of the wire 70 between the spool 60 and the winding device. In other words, the pay-off device of this embodiment can flexibly adjust the reserved length of the wire 70 to an appropriate length, and can ensure that the tension during the winding process remains within an appropriate range, thereby improving the winding quality.

[0046] like Figure 2 As shown, Figure 2 The dotted lines in the figure indicate that the swing arm 42 and the guide wheel 43 are located in different positions, wherein position A is the initial position of the swing arm 42. After the wire 70 is wound around the guide wheel 43, the tensioner 40 applies pressure to the wire 70 through the guide wheel 43. When the winding speed of the winding device changes, the swing arm 42 can swing between position A and position B. Specifically, when the winding device's wire speed decreases, the length of the wire 70 between the spool 60 and the winding device increases, the pressure of the wire 70 on the guide wheel 43 decreases, and the swing arm 42 is in position A. After the tensioner body 41 detects the current position of the swing arm 42, it sends a signal to the corresponding drive mechanism 20, which in turn reduces the pay-off speed of the spool 60, thereby ensuring that the pay-off speed matches the wire speed and that the tension of the wire 70 is within an appropriate range. When the winding device's wire speed increases, the length of the wire 70 between the spool 60 and the winding device shortens, and the wire 70 presses the swing arm 42 to position B. The tensioner body 41 detects the current position of the swing arm 42 and sends a signal to the corresponding drive mechanism 20, which increases the payout speed of the spool 60, thereby ensuring that the payout and wire speed match and that the tension of the wire 70 is within an appropriate range. When the winding device's wire speed fluctuates very little, the swing arm 42 swings between positions A and B (except for positions A and B), and the payout speed of the drive mechanism 20 remains unchanged.

[0047] In this embodiment, Figure 1As shown, the frame mechanism 10 includes a first frame 11 and a second frame 12, the drive mechanism 20 is mounted on the first frame 11, and the adjustment mechanism 30 is mounted on the second frame 12. The distance between the first frame 11 and the second frame 12 is adjustable. By adjusting the position of the first frame 11 and the second frame 12, the reserved length of each wire 70 during the winding process can also be adjusted. However, due to the large weight of the first frame 11 and the second frame 12, the flexibility of adjusting the reserved length of the wire 70 by adjusting the position of the first frame 11 or the second frame 12 is slightly less. However, the approximate reserved length of the wire 70 can be adjusted by adjusting the position of the first frame 11 or the second frame 12. Optionally, both the first frame 11 and the second frame 12 can be formed by splicing profiles.

[0048] like Figure 1 As shown, the pay-off device also includes a fixed pulley 50, which is mounted on the frame mechanism 10. The wire 70 passes through the guide wheel 43 of the tensioner 40 and is then wound around the fixed pulley 50. By providing the fixed pulley 50, the output direction of the wire 70 can be kept constant under the condition that the position of the guide wheel 43 is constantly changing, thereby facilitating accurate docking with the downstream winding device or other structure. In this embodiment, the frame mechanism 10 also includes a third frame 13, and the fixed pulley 50 is mounted on the third frame 13. By adjusting the position of the third frame 13 relative to the second frame 12, the length of the wire 70 between the guide wheel 43 and the fixed pulley 50 can be changed, thereby changing the overall reserved length of the wire 70.

[0049] like Figure 1 As shown, the drive mechanism 20 includes a support assembly 21 and a drive assembly 22. The support assembly 21 includes a driving roller 211 and a driven roller 212. The driving rollers 211 and 212 are spaced apart and arranged in parallel and rotatably mounted on the frame 10. The spool 60 is supported between the driving roller 211 and the driven roller 212, and the drive assembly 22 drives the driving roller 211 to rotate. The driving roller 211 rotates the spool 60 through friction, thereby achieving wire payout. Supporting the spool 60 by the driving roller 211 and the driven roller 212 not only ensures that the axis of the spool 60 precisely falls between the driving roller 211 and the driven roller 212, thereby facilitating the subsequent calculation of the reserved length of the wire 70, but also allows for support of spools 60 of different sizes. Optionally, the drive assembly 22 may be a motor. Both the driving roller 211 and the driven roller 212 are mounted on the first frame 11.

[0050] In order to ensure the stability of the axial position of the spool 60, as Figure 1As shown, the support assembly 21 further includes a stopper 213, which is provided at both ends of the active roller 211 and the driven roller 212. The two stoppers 213 on the same roller respectively abut against the end surfaces of the spool 60 at both ends, thereby axially limiting the spool 60. Optionally, the stopper 213 is a cylindrical structure and is sleeved on the active roller 211 or the driven roller 212.

[0051] In order to realize the driving mechanism 20 driving the active roller 211, as shown in FIG. Figure 1 As shown, the drive mechanism 20 also includes a transmission assembly 23, which includes a driving wheel 231, a driven wheel 232, and a flexible member 233. The driving wheel 231 is connected to the output end of the drive assembly 22, the driven wheel 232 is connected to the driving roller 211, and the flexible member 233 is wound around the driving wheel 231 and the driven wheel 232. By providing the driving wheel 231, the driven wheel 232, and the flexible member 233, not only can the rotational motion output by the motor be transmitted to the driving roller 211, but the setting position of the drive assembly 22 can also be changed, so that the motor can be arranged below the support assembly 21, thereby making the structure of the pay-off device more compact. Optionally, in some embodiments, the driving wheel 231 and the driven wheel 232 are both sprockets, and the flexible member 233 is a chain. In some embodiments, the driving wheel 231 and the driven wheel 232 are both pulleys, and the flexible member 233 is a belt.

[0052] like Figure 1 and Figure 3 As shown, the adjustment mechanism 30 includes a clamping block 31, a first support rod 32, and a first locking member 33. The clamping block 31 is connected to the frame mechanism 10, and is provided with a first through hole 311. The side walls of the first through hole 311 are provided with a slit 312. The tensioner 40 is mounted on the first support rod 32, which passes through the first through hole 311. The first locking member 33 passes through the first side walls 313 and the second side walls 314 on both sides of the slit 312, so that the first side walls 313 and the second side walls 314 clamp the first support rod 32.

[0053] In this embodiment, the first support rod 32 extends roughly vertically. When the first locking member 33 is operated to loosen the first side wall 313 and the second side wall 314 from the first support rod 32, the position of the tensioner 40 in the vertical direction can be adjusted by pulling the first support rod 32 relative to the clamping block 31, thereby changing the length of the wire 70 between the spool 60 and the guide wheel 43, and between the guide wheel 43 and the fixed wire wheel 50, that is, changing the reserved length of the wire 70. After the adjustment is completed, the first locking member 33 is operated to lock the first side wall 313 and the second side wall 314. The structure is simple and the adjustment is convenient. Optionally, the first lock component includes a bolt and a nut, the bolt is sequentially passed through the first side wall 313 and the second side plate, and the nut is threadedly connected to the bolt.

[0054] like Figure 1 and Figure 3 As shown, the adjustment mechanism 30 also includes a second support rod 34 and a second locking member 35. The second support rod 34 is connected to the frame mechanism 10. The clamping block 31 is sleeved on the second support rod 34 and can rotate and slide relative to the second support rod 34. The second locking member 35 can penetrate the clamping block 31 and abut against the second support rod 34. When the second locking member 35 is adjusted so that it does not abut against the second support rod 34, the clamping block 31 rotates or slides relative to the second support rod 34, thereby adjusting the length of the wire 70 between the spool 60 and the guide wheel 43, and between the guide wheel 43 and the fixed wire wheel 50, thereby changing the reserved length of the wire 70. After the adjustment is completed, the second locking member 35 is actuated to abut against the second support rod 34 to lock the position of the clamping block 31. By adjusting the position of the first support rod 32 relative to the clamping block 31 and the position of the clamping block 31 relative to the second support rod 34, the position of the tensioner 40 can be adjusted, thereby making the length of the reserved wire 70 more flexible.

[0055] Specifically, a threaded hole 316 and a second through hole 315 are provided on the clamping block 31, the second support rod 34 is passed through the through hole, the threaded hole 316 is connected to the second through hole 315, and the second locking piece 35 is threadedly connected to the threaded hole 316. The clamping block 31 can be locked or unlocked by rotating the second locking piece 35, and the operation is simple and convenient.

[0056] In some cases, the winding of the motor needs to combine two wires 70 together and then be wound into a winding. In this case, a combining device needs to be set between the pay-off device and the winding device, and the wires 70 on the two spools 60 also need to be paid out.

[0057] In order to enable the pay-off device to pay off the wires 70 on the two spools 60 at the same time, Figure 1 As shown, the pay-off device includes at least two drive mechanisms 20 and a corresponding number of tensioners 40, each tensioner 40 is electrically connected to a drive mechanism 20, and the wire 70 on the spool 60 on each drive mechanism 20 is wound through the guide wheel 43 of a tensioner 40. With such an arrangement, it is possible to pay off the two spools 60 at the same time, and it is possible to ensure that the tension of each wire 70 is maintained within an appropriate range during the pay-off process. It should be noted that in this embodiment, the wires 70 on at least two spools 60 are wound through the fixed pulley 50 after passing through the corresponding tensioner 40, thereby ensuring that the extension direction of the two wires 70 is consistent when entering the composite device. Specifically, at least two winding grooves 51 are provided on the fixed pulley 50 for the winding of the two wires 70.

[0058] Optionally, in this embodiment, the pay-off device includes two driving mechanisms 20 and two tensioners 40, such as Figure 1As shown, the two driving mechanisms 20 are arranged along the first direction, and the two tensioners 40 are also arranged along the first direction. The adjustment mechanism 30 includes two first support rods 32 and two clamping blocks 31, and each tensioner 40 is correspondingly installed on a first support rod 32. The second support rod 34 extends along the first direction, and the two clamping blocks 31 are both sleeved on the second support rod 34. When the second locking member 35 is operated and does not abut against the second support rod 34, the sliding of the clamping block 31 along the second support rod 34 can not only adjust the length of the reserved wire 70, but also adjust the position of the two tensioners 40, so that the fixed wire wheel 50 is centered relative to the two tensioners 40, avoiding excessive changes in the direction of the wire 70 during transportation, thereby reducing the risk of torsional deformation of the cross section of the wire 70 (such as flat wire).

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will, based on the concept of the present invention, vary the specific implementation methods and scope of application, and the contents of this specification should not be construed as limiting the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Pay-off device, characterized in that, include: Frame mechanism (10); A driving mechanism (20) is mounted on the frame mechanism (10), and the driving mechanism (20) is capable of supporting the bobbin (60) and driving the bobbin (60) to rotate around its own axis; An adjusting mechanism (30) and a tensioner (40), wherein the tensioner (40) is mounted on the frame mechanism (10) via the adjusting mechanism (30), the wire (70) on the spool (60) is wound around a guide wheel (43) of the tensioner (40), the tensioner (40) is electrically connected to the driving mechanism (20), and the adjusting mechanism (30) is capable of adjusting the distance between the tensioner (40) and the spool (60).

2. The pay-off device according to claim 1, characterized in that The regulating mechanism (30) comprises: A clamping block (31), the clamping block (31) being connected to the frame mechanism (10), the clamping block (31) being provided with a first through hole (311), and a slit (312) being provided on a side wall of the first through hole (311); a first support rod (32), the tensioner (40) being mounted on the first support rod (32), and the first through hole (311) being formed through the first support rod (32); A first locking member (33) is provided through the first side wall (313) and the second side wall (314) on both sides of the slit (312), so that the first side wall (313) and the second side wall (314) clamp the first support rod (32).

3. The pay-off device according to claim 2, characterized in that The regulating mechanism (30) further comprises: a second support rod (34), the second support rod (34) being connected to the frame mechanism (10), the clamping block (31) being sleeved on the second support rod (34) and capable of rotating and / or sliding relative to the second support rod (34); A second locking member (35), wherein the second locking member (35) can pass through the clamping block (31) and abut against the second support rod (34).

4. The pay-off device according to claim 3, characterized in that The clamping block (31) is provided with a threaded hole (316) and a second through hole (315); the second support rod (34) passes through the through hole (315); the threaded hole (316) is communicated with the second through hole (315); and the second locking member (35) is threadedly connected to the threaded hole (316).

5. The pay-off device according to claim 1, wherein: The pay-off device includes at least two driving mechanisms (20) and a corresponding number of tensioners (40), each of the tensioners (40) is electrically connected to one of the driving mechanisms (20), and the wire on the spool (60) on each of the driving mechanisms (20) is wound around the guide wheel (43) of one of the tensioners (40).

6. The pay-off device according to any one of claims 1 to 5, characterized in that: The frame mechanism (10) comprises a first frame (11) and a second frame (12); the driving mechanism (20) is mounted on the first frame (11); the adjusting mechanism (30) is mounted on the second frame (12); and the distance between the first frame (11) and the second frame (12) is adjustable.

7. The pay-off device according to any one of claims 1 to 5, characterized in that: The pay-off device further comprises a fixed wire wheel (50), which is mounted on the frame mechanism (10), and the wire (70) passing through the tensioner (40) is wound around the fixed wire wheel (50).

8. The pay-off device according to any one of claims 1 to 5, characterized in that: The driving mechanism (20) comprises: A support assembly (21) includes a driving roller (211) and a driven roller (212) arranged in parallel and spaced apart, wherein the driving roller (211) and the driven roller (212) are both rotatably mounted on the frame mechanism (10), and the bobbin (60) can be supported between the driving roller (211) and the driven roller (212); The driving assembly (22) is capable of driving the active roller (211) to rotate.

9. The pay-off device according to claim 8, characterized in that: The support assembly (21) further comprises a limiting member (213), the limiting member (213) being provided at both ends of the active roller (211) and the driven roller (212), and the limiting member (213) being configured to limit the spool (60) along the axial direction.

10. The pay-off device according to claim 8, wherein: The driving mechanism (20) further comprises a transmission assembly (23), the transmission assembly (23) comprising a driving wheel (231), a driven wheel (232) and a flexible member (233), the driving wheel (231) being connected to the output end of the driving assembly (22), the driven wheel (232) being connected to the driving roller (211), and the flexible member (233) being wound around the driving wheel (231) and the driven wheel (232).

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