Positioning device and winding machine

Abstract

The utility model discloses a positioning device and a winding machine, and relates to the technical field of motor manufacture, and the positioning device comprises a pedestal; the clamping mechanism is arranged on the base, the clamping mechanism comprises a first clamping assembly and a second clamping assembly, the first clamping assembly and the second clamping assembly clamp the two ends of the rotor respectively, and the end of the rotor is rotationally connected with the second clamping assembly; the limiting mechanism is arranged on the base, the limiting mechanism is used for surrounding the periphery of the rotor, and the limiting mechanism is provided with a clamping opening to expose one iron core; and the driving motor is mounted on the base, and the driving motor is in driving connection with the first clamping assembly to drive the rotor to rotate. According to the technical scheme provided by the utility model, the automation degree is relatively high, the operation is accurate, the rotor can be stably clamped and accurately wound, the error rate is reduced, and the consistency and reliability of rotor winding are improved while the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a positioning device and a winding machine. Background Technology

[0002] In the production process of electric motors, the winding process is one of the key steps that affects the final performance of the rotor and stator. During the winding process, the rotor needs to be precisely positioned and clamped. Existing winding machines often cannot provide sufficient clamping force during the rotor clamping process, causing the rotor to move slightly during the winding process, which affects the winding accuracy. Utility Model Content

[0003] The main purpose of this invention is to provide a positioning device and a winding machine, which aims to solve the problem that the rotor cannot be fully clamped during the winding process, thus affecting the winding accuracy.

[0004] To achieve the above objectives, the present invention proposes a positioning device for machining a rotor, the rotor comprising a plurality of iron cores spaced apart circumferentially, the positioning device comprising:

[0005] Base;

[0006] A clamping mechanism is provided on the base. The clamping mechanism includes a first clamping component and a second clamping component. The first clamping component and the second clamping component respectively clamp the two ends of the rotor. The end of the rotor is rotatably connected to the second clamping component.

[0007] A limiting mechanism, disposed on the base, is used to surround the outer periphery of the rotor, and the limiting mechanism has a clamping opening to expose one of the iron cores; and

[0008] A drive motor is mounted on the base and drives the first clamping assembly to drive the rotor to rotate.

[0009] In one embodiment, the first clamping assembly includes:

[0010] A mounting base is provided on the base;

[0011] A central bushing is disposed within the mounting base and fixedly connected to the mounting base. One end of the central bushing has an adjustable opening for inserting the rotor. The outer diameter of the opening is larger than the outer diameter of the central bushing.

[0012] The mounting sleeve is slidably disposed within the mounting base and sleeved on the outer periphery of the central bushing; the mounting base, the mounting sleeve, and the central bushing are coaxially arranged.

[0013] A first driving structure is provided on the base and drives the mounting sleeve to move along the axial direction of the mounting seat. The inner diameter of the end of the mounting sleeve away from the opening is smaller than the outer diameter of the opening where the central bushing is located, so that when the mounting sleeve moves toward the opening, the diameter of the opening is reduced to clamp the rotor.

[0014] In one embodiment, the central bushing includes a bushing body and a plurality of protrusions, the protrusions being spaced apart along the periphery of the bushing body, and the plurality of protrusions enclosing each other to form the opening.

[0015] In one embodiment, the rotor further includes a shaft passing through a plurality of through holes formed by the iron cores, and one end of the shaft is provided with a hook in the circumferential direction. The second clamping assembly includes:

[0016] A support frame is provided on the base;

[0017] The second drive structure is provided on the support frame;

[0018] A sleeve is connected to the second driving structure to drive the sleeve to rise and fall. The sleeve is used to fit around the outer periphery of the rotating hook.

[0019] In one embodiment, the second clamping assembly further includes a connecting seat, a connecting shaft, and an elastic element. The second driving structure drives and connects to the connecting seat. The connecting shaft is elastically connected to the connecting seat through the elastic element. The sleeve is sleeved on the connecting shaft and fixedly connected to the connecting seat.

[0020] In one embodiment, the limiting mechanism includes:

[0021] A support base is provided on the base;

[0022] The clamps are provided in two and are slidably connected to the support base. The clamps are used to surround the outer periphery of the rotor.

[0023] A third driving structure is provided on the support base, and the third driving structure drives the two grippers to move closer to each other or further away from each other.

[0024] In one embodiment, the limiting mechanism further includes a connecting rod and a mounting plate. The third driving structure drives the mounting plate to lift and lower. The connecting rod is located at both ends of the mounting plate and is hinged to the mounting plate. The other end of the connecting rod is hinged to the gripper so that when the third driving structure drives the mounting plate to rise, the two grippers come close together to clamp the rotor.

[0025] In one embodiment, the positioning device includes a plurality of clamping mechanisms and limiting mechanisms, each of the clamping mechanisms and the limiting mechanisms corresponding to one rotor.

[0026] In one embodiment, a synchronous pulley is fixedly provided on the outer periphery of the mounting base. The positioning device further includes a synchronous belt and an output pulley. The output end of the drive motor drives and connects to the output pulley. The synchronous belt connects the synchronous pulley and the output pulley.

[0027] This utility model also proposes a winding machine, characterized in that it includes a positioning device as described in any of the above claims.

[0028] In the technical solution of this utility model, the positioning device includes a base, on which a clamping mechanism and a limiting mechanism are provided. The clamping mechanism includes a first clamping component and a second clamping component for clamping both ends of the rotor to fix the rotor and ensure that the rotor remains stable during the winding process, thus guaranteeing the winding accuracy. The limiting mechanism is used to surround the outer periphery of the rotor and, by providing a clamping opening, exposes one of the rotor's iron cores while limiting the exposure of other iron cores, ensuring that only one iron core is wound at a time. This avoids the copper wire accidentally getting tangled on other iron cores, affecting the winding accuracy, and preventing material waste. After the iron core is wound, the first clamping assembly is driven by the drive motor, causing the rotor to rotate and adjust its angle so that the next target iron core can enter the clamping port. Then the iron core is wound again until all iron cores are wound. The wound iron core rotates to the clamping area of ​​the limiting mechanism, which can also protect the wound area and prevent newly wound coils from contacting it and affecting the winding quality. This positioning device has a high degree of automation and precise operation. It can firmly clamp the rotor and accurately wind the iron core, reducing the error rate and improving the consistency and reliability of rotor winding while improving operational efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 A schematic diagram of an embodiment of the positioning device provided by this utility model;

[0031] Figure 2 A schematic diagram of another embodiment of the positioning device provided by this utility model;

[0032] Figure 3A schematic diagram of an embodiment of the second clamping component provided by this utility model;

[0033] Figure 4 A cross-sectional schematic diagram of the second clamping assembly provided by this utility model;

[0034] Figure 5 A schematic diagram of the limiting mechanism provided by this utility model;

[0035] Figure 6 A schematic diagram of the structure of the first clamping assembly provided by this utility model;

[0036] Figure 7 A schematic diagram of the structure of the central bushing provided by this utility model.

[0037] Explanation of icon numbers:

[0038] 100. Base;

[0039] 200. Clamping mechanism; 210. First clamping assembly; 211. Mounting base; 212. Central bushing; 2121. Bushing body; 2122. Protrusion; 213. Mounting outer sleeve; 214. First drive structure; 215. Synchronous pulley; 220. Second clamping assembly; 221. Connecting seat; 222. Sleeve; 223. Elastic element; 224. Connecting shaft;

[0040] 300, Limiting mechanism; 310, Support base; 320, Gripper; 330, Third drive structure; 340, Connecting rod; 350, Mounting plate;

[0041] 400. Drive motor; 410. Output pulley; 420. Adjusting pulley; 430. Synchronous belt.

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0044] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] This utility model proposes a positioning device and a winding machine.

[0047] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the positioning device is used to process a rotor, the rotor including a plurality of iron cores spaced apart circumferentially, and the positioning device includes:

[0048] Base 100;

[0049] A clamping mechanism 200 is provided on the base 100. The clamping mechanism 200 includes a first clamping component 210 and a second clamping component 220. The first clamping component 210 and the second clamping component 220 respectively clamp the two ends of the rotor, and the ends of the rotor are rotatably connected to the second clamping component 220.

[0050] A limiting mechanism 300, disposed on the base 100, is used to surround the outer periphery of the rotor. The limiting mechanism 300 has a clamping opening to expose one of the iron cores; and

[0051] A drive motor 400 is mounted on the base 100. The drive motor 400 drives the first clamping assembly 210 to drive the rotor to rotate.

[0052] In the technical solution of this utility model, the positioning device includes a base 100, on which a clamping mechanism 200 and a limiting mechanism 300 are provided. The clamping mechanism 200 includes a first clamping component 210 and a second clamping component 220 for clamping both ends of the rotor to fix the rotor and ensure that the rotor remains stable during the winding process, thus ensuring the winding accuracy. The limiting mechanism 300 is used to surround the outer periphery of the rotor and, by providing a clamping opening, exposes one of the rotor's iron cores while limiting the exposure of other iron cores, ensuring that only one iron core is wound at a time. This avoids the copper wire accidentally winding onto other iron cores, affecting the winding accuracy and preventing material waste. After the iron core exposed in the clamping port is wound, the first clamping component 210 is driven by the drive motor 400, causing the rotor to rotate and adjust its angle so that the next target iron core can enter the clamping port. Then the iron core is wound again until all iron cores are wound. The wound iron core rotates to the clamping area of ​​the limiting mechanism 300, which can also protect the wound area and prevent newly wound coils from contacting it and affecting the winding quality. This positioning device has a high degree of automation and precise operation. It can firmly clamp the rotor and accurately wind it, reducing the error rate. It also improves the consistency and reliability of rotor winding while improving operational efficiency.

[0053] The base 100 includes an upper body and a lower body. The first clamping assembly 210 is installed on the lower body and passes upward through the upper body to clamp the rotor. The limiting mechanism 300 is installed on the upper body to hold the outer periphery of the rotor.

[0054] Please refer to Figure 6 In an embodiment of this utility model, the first clamping component 210 includes:

[0055] Mounting base 211 is provided on base 100;

[0056] A central bushing 212 is located inside a mounting base 211 and is fixedly connected to the mounting base 211. One end of the central bushing 212 has an adjustable opening for inserting a rotor. The outer diameter of the opening is larger than the outer diameter of the central bushing 212.

[0057] The mounting sleeve 213 is slidably disposed inside the mounting base 211 and sleeved on the outer periphery of the central bushing 212. The mounting base 211, the mounting sleeve 213 and the central bushing 212 are coaxially arranged.

[0058] The first drive structure 214 is provided on the base 100 and drives the connecting mounting sleeve 213 to drive the mounting sleeve 213 to move axially along the mounting base 211. The inner diameter of the end of the mounting sleeve 213 away from the opening is smaller than the outer diameter of the opening of the central bushing 212, so that when the mounting sleeve 213 moves toward the opening, the diameter of the opening is reduced to clamp the rotor.

[0059] Specifically, the rotor includes a shaft, which is vertically arranged. A first clamping assembly 210 is used to clamp the lower end of the shaft. The first clamping assembly 210 includes a mounting base 211 with a communicating cavity arranged along its axial direction. A mounting sleeve 213 and a central shaft sleeve 212 are sequentially fitted inside the communicating cavity. One end of the central shaft sleeve 212 has an opening for inserting the rotor shaft. The inner diameter of the mounting sleeve 213 is larger at the end near the opening and smaller at the end away from the opening than the outer diameter of the central shaft sleeve 212 at the end with the opening. The end of the mounting sleeve 213 furthest from the opening extends into the communicating cavity. The first drive structure 214 drives the end of the mounting sleeve 213 extending into the communicating cavity. When the first drive structure 214 drives the mounting sleeve 213 to move axially towards the opening end of the communicating cavity, the end of the mounting sleeve 213 furthest from the opening gradually approaches the opening of the central bushing 212, causing the opening end to retract inward to reduce the diameter of the opening end, making it easier to clamp the rotor shaft. If it is necessary to release the rotor shaft, the first drive structure 214 drives the mounting sleeve 213 furthest from the opening. 3. Moving away from the opening, the open end of the central bushing 212 is gradually released, and the inner diameter of the open end increases, releasing the rotor shaft. That is, the rotor shaft can be clamped and released by the cooperation of the mounting sleeve 213 and the central bushing 212. During clamping, the rotor shaft is firmly fixed in the appropriate position, reducing the risk of rotor shaft displacement or damage due to loosening. In addition, since the mounting sleeve 213 has a gradually changing inner diameter design, when moving towards the open end, different positions of the mounting sleeve 213 contact the open end of the central bushing 212, which can adjust the opening to different inner diameters, better adapting to rotor shafts of different diameters. Compared with other clamping structures, only the axial movement of the mounting sleeve 213 needs to be controlled to change the clamping force of the central bushing 212, which can quickly complete the clamping process, improve work efficiency, and the whole structure is more compact, occupying less space, and is suitable for space-constrained environments. The first drive structure 214 can be a linear drive component such as a cylinder, hydraulic cylinder, or electric telescopic rod.

[0060] Please refer to Figure 7 In an embodiment of this utility model, the central bushing 212 includes a bushing body 2121 and a plurality of protrusions 2122. The protrusions 2122 are spaced apart along the periphery of the bushing body 2121, and the plurality of protrusions 2122 together form an opening.

[0061] Specifically, multiple protrusions 2122 are spaced apart around the periphery of the bushing body 2121, forming an opening. The protrusions 2122 are inclined outward so that the outer diameter of one end of the opening is larger than the inner diameter of the mounting sleeve 213 away from the opening. After the product is inserted into the opening, it moves towards the protrusions 2122 through the mounting sleeve 213, causing the protrusions 2122 to contract inward to clamp the product. Since the opening is formed by multiple protrusions 2122, rather than a single continuous structure such as a cylindrical structure, it can not only reduce the amount of material used, but also facilitate inward contraction, while maintaining sufficient strength and rigidity, which helps to reduce the weight of the entire central bushing 212.

[0062] In addition, the first clamping assembly 210 also includes a pin, which passes radially through the mounting base 211, the mounting sleeve 213 and the central bushing 212 in sequence. The mounting sleeve 213 is provided with a slot along the axial direction. Based on the pin's fixed connection between the central bushing 212 and the mounting base 211, when the first drive structure 214 drives the mounting sleeve 213 to move, the slot of the mounting sleeve 213 moves along the pin, providing guidance for the movement of the mounting sleeve 213 and preventing deviation.

[0063] Please refer to Figure 3 and Figure 4 In an embodiment of this utility model, the rotating shaft passes through a plurality of through holes formed by iron cores, and one end of the rotating shaft is provided with a hook along the circumferential direction. The second clamping assembly 220 includes:

[0064] Support frame, located at base 100;

[0065] The second drive structure is located on the support frame;

[0066] Sleeve 222, the second drive structure drives the connecting sleeve 222 to drive the sleeve 222 to rise and fall, the sleeve 222 is used to be sleeved on the outer periphery of the rotating hook.

[0067] Specifically, the support frame (not shown) is on the base 100, and its structure can be similar to a gantry frame. A second drive structure (not shown) is set on the support frame, with the end of the rotor with the hook facing upwards. The second drive structure can be a linear drive structure such as a cylinder, hydraulic cylinder, or electric telescopic rod. The output end of the second drive structure drives the connecting sleeve 222, with the outlet end of the sleeve 222 facing downwards. The inner diameter of the sleeve 222 is larger than the outer diameter of the part of the rotating shaft with the hook, so that the sleeve 222 can be fitted onto the part of the rotating shaft with the hook. On one end of the outer periphery, after the rotor moves to the first clamping assembly 210 in the previous process and is clamped by the first clamping assembly 210, the second drive structure drives the sleeve 222 to descend, so that the sleeve 222 is fitted outside the rotating hook. This can prevent the copper wire from contacting the rotating hook and getting wrapped around the rotating hook during the winding process, thus preventing winding errors. By setting the sleeve 222, the rotating hook is effectively blocked, ensuring that the copper wire is only wrapped around the iron core, reducing the probability of winding errors, avoiding the waste of time and costs, and improving processing efficiency.

[0068] Please refer to Figure 4 In an embodiment of this utility model, the second clamping assembly 220 further includes a connecting seat 221, a connecting shaft 224, and an elastic element 223. The second driving structure drives the connecting seat 221, the connecting shaft 224 is elastically connected to the connecting seat 221 through the elastic element 223, and the sleeve 222 is sleeved on the outside of the connecting shaft 224 and is fixedly connected to the connecting seat 221.

[0069] Specifically, the output end of the second drive structure is connected to a connecting seat 221, and a sleeve 222 is disposed on the connecting seat 221. When the second drive structure drives the connecting seat 221 to descend so that the sleeve 222 is fitted outside the rotating shaft, the connecting shaft 224 inside the sleeve 222 abuts against the rotating shaft, which can prevent the connecting seat 221 from descending continuously and avoid damage to the rotor caused by the setting of the sleeve 222 and the first clamping assembly 210. In addition, an elastic element 223 is disposed inside the sleeve 222. The two ends of the elastic element 223 are elastically connected to the connecting seat 221 and the connecting shaft 224 respectively, which can provide buffer when the connecting shaft 224 contacts the rotating shaft, avoiding hard contact between the connecting shaft 224 and the rotating shaft and damaging the rotor.

[0070] Please refer to Figure 5 In an embodiment of this utility model, the limiting mechanism 300 includes:

[0071] Support base 310 is located on base 100;

[0072] Two grippers 320 are provided and are slidably connected to the support base 310. The grippers 320 are used to surround the outer periphery of the rotor.

[0073] The third drive structure 330 is located on the support base 310. The third drive structure 330 drives the two grippers 320 to move closer to each other or further away from each other.

[0074] Specifically, the limiting mechanism 300 includes a support base 310, which is mounted on the base 100. A third drive structure 330 and two grippers 320 are provided on the side of the support base 310 facing the rotor. The two grippers 320 are slidably connected to the support base 310 by a slider and a guide rail, wherein the guide rail is horizontally positioned. The third drive structure 330 is used to drive the two grippers 320 to move closer to each other or further away from each other in the horizontal direction. After the first clamping assembly 210 and the second clamping assembly 220 have positioned the rotor, the third drive structure 330 drives the two grippers 320 to move closer to each other to surround the outer periphery of the rotor's iron core. The end of the two grippers 320 away from the support base 310 forms a clamping opening after clamping. The iron core that needs to be wound is exposed at the clamping opening so that when the winding mechanism approaches the rotor for winding, only the exposed iron core is wound.

[0075] Please refer to Figure 5 In an embodiment of this utility model, the limiting mechanism 300 further includes a connecting rod 340 and a mounting plate 350. The third driving structure 330 drives the mounting plate 350 to lift and lower. The connecting rod 340 is located at both ends of the mounting plate 350 and is hinged to the mounting plate 350. The other end of the connecting rod 340 is hinged to the gripper 320 so that when the third driving structure 330 drives the mounting plate 350 to rise, the two grippers 320 approach each other to clamp the rotor.

[0076] Specifically, a mounting plate 350 is horizontally arranged on one side of the support base 310. The third drive structure 330 is connected to the lower part of the mounting plate 350. A connecting rod 340 is hinged to each end of the mounting plate 350, and a slide is hinged to the other end of the connecting rod 340. Each connecting rod 340 corresponds to a slide, and a gripper 320 is connected to each slide. When the third drive structure 330 drives the mounting plate 350 to rise, the two grippers 320 move towards the middle due to the arrangement of the connecting rods 340. That is, the two grippers 320 move closer to each other to surround the outer periphery of the rotor core. This structure is applicable to different models of rotors, ensuring that only the exposed core of the winding is exposed, thus improving the winding accuracy.

[0077] Please refer to Figure 1 and Figure 2 In an embodiment of this utility model, the positioning device includes multiple clamping mechanisms 200 and limiting mechanisms 300, each clamping mechanism 200 and limiting mechanism 300 corresponding to a rotor.

[0078] Specifically, by setting multiple clamping mechanisms 200 and multiple limiting mechanisms 300, multiple rotors can be positioned simultaneously to wind multiple rotors at the same time, thereby increasing the production line capacity. Moreover, the clamping mechanism 200 and limiting mechanism 300 of each rotor are the same, which makes it easy to maintain the consistency of the winding quality of all rotors. The entire positioning device reduces manual intervention, lowers the error rate caused by manual operation, has a high degree of mechanization, and improves the overall reliability of production.

[0079] Please refer to Figure 6 In an embodiment of this utility model, a synchronous wheel 215 is fixedly provided on the outer periphery of the mounting base 211. The positioning device also includes a synchronous belt 430 and an output wheel 410. The output end of the drive motor 400 drives and connects to the output wheel 410, and the synchronous belt 430 connects the synchronous wheel 215 and the output wheel 410.

[0080] Specifically, the output end of the drive motor 400 is connected to an output wheel 410. The output wheel 410 is connected to a synchronous wheel 215 via a synchronous belt 430. The synchronous belt 430 transmits power to the synchronous wheel 215 to drive it to rotate. The synchronous wheel 215 is fixedly connected to the mounting base 211. The rotation of the mounting base 211 drives the central shaft sleeve 212 to rotate, which in turn drives the rotor to rotate. Since each mounting base 211 has a synchronous wheel 215, the synchronous belt 430 connects multiple synchronous wheels 215 in series, so that the drive motor 400 drives multiple synchronous wheels 215 to rotate simultaneously, thereby driving multiple rotors to rotate simultaneously. That is, when the iron core exposed at the clamping port is wound, the drive motor 400 drives the rotor to rotate, so that the next iron core that needs to be wound rotates to the corresponding clamping port for winding, until all iron cores are wound. In addition, an adjusting wheel 420 is set between the output wheel 410 and the synchronous wheel 215. The speed ratio and rotation direction are adjusted by setting the adjusting wheel 420 to adapt to different winding requirements.

[0081] This utility model also proposes a winding machine, which includes a positioning device. The specific structure of the winding machine is as described in the above embodiments. Since this winding machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0082] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A positioning device for machining a rotor, said rotor comprising a plurality of iron cores spaced apart circumferentially, characterized in that, The positioning device includes: Base; A clamping mechanism is provided on the base. The clamping mechanism includes a first clamping component and a second clamping component. The first clamping component and the second clamping component respectively clamp the two ends of the rotor. The end of the rotor is rotatably connected to the second clamping component. A limiting mechanism, disposed on the base, is used to surround the outer periphery of the rotor, and the limiting mechanism has a clamping opening to expose one of the iron cores; and A drive motor is mounted on the base and drives the first clamping assembly to drive the rotor to rotate.

2. The positioning device as described in claim 1, characterized in that, The first clamping component includes: A mounting base is provided on the base; A central bushing is disposed within the mounting base and fixedly connected to the mounting base. One end of the central bushing has an adjustable opening for inserting the rotor. The outer diameter of the opening is larger than the outer diameter of the central bushing. The mounting sleeve is slidably disposed within the mounting base and sleeved on the outer periphery of the central bushing; the mounting base, the mounting sleeve, and the central bushing are coaxially arranged. A first driving structure is provided on the base and drives the mounting sleeve to move along the axial direction of the mounting seat. The inner diameter of the end of the mounting sleeve away from the opening is smaller than the outer diameter of the opening where the central bushing is located, so that when the mounting sleeve moves toward the opening, the diameter of the opening is reduced to clamp the rotor.

3. The positioning device as described in claim 2, characterized in that, The central bushing includes a bushing body and a plurality of protrusions, which are spaced apart along the periphery of the bushing body, and the plurality of protrusions together form the opening.

4. The positioning device as described in any one of claims 1 to 3, characterized in that, The rotor further includes a rotating shaft that passes through a plurality of through holes formed by the iron cores. One end of the rotating shaft is provided with a circumferential hook. The second clamping assembly includes: A support frame is provided on the base; The second drive structure is provided on the support frame; A sleeve is connected to the second driving structure to drive the sleeve to rise and fall. The sleeve is used to fit around the outer periphery of the rotating hook.

5. The positioning device as described in claim 4, characterized in that, The second clamping assembly further includes a connecting seat, a connecting shaft, and an elastic element. The second driving structure drives and connects to the connecting seat. The connecting shaft is elastically connected to the connecting seat through the elastic element. The sleeve is sleeved on the connecting shaft and fixedly connected to the connecting seat.

6. The positioning device as described in claim 1, characterized in that, The limiting mechanism includes: A support base is provided on the base; The clamps are provided in two and are slidably connected to the support base. The clamps are used to surround the outer periphery of the rotor. A third driving structure is provided on the support base, and the third driving structure drives the two grippers to move closer to each other or further away from each other.

7. The positioning device as described in claim 6, characterized in that, The limiting mechanism also includes a connecting rod and a mounting plate. The third driving structure drives the mounting plate to lift and lower. The connecting rod is located at both ends of the mounting plate and is hinged to the mounting plate. The other end of the connecting rod is hinged to the gripper so that when the third driving structure drives the mounting plate to rise, the two grippers come close together to clamp the rotor.

8. The positioning device as described in claim 2, characterized in that, The positioning device includes multiple clamping mechanisms and limiting mechanisms, each of which corresponds to one rotor.

9. The positioning device as described in claim 8, characterized in that, A synchronous pulley is fixedly provided on the outer periphery of the mounting base. The positioning device also includes a synchronous belt and an output pulley. The output end of the drive motor drives and connects to the output pulley. The synchronous belt connects the synchronous pulley and the output pulley.

10. A winding machine, characterized in that, Includes the positioning device as described in any one of claims 1 to 9.

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