Winding fixture for coil windings
By designing a coil winding fixture, the problem of low efficiency in the stator core assembly process of coil windings was solved, realizing automated winding of coil windings and automated winding assembly of stator cores, thereby improving production efficiency and product quality consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG PANGOOD POWER TECH CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-30
Smart Images
Figure CN224438764U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of axial flux motor production equipment, and in particular to a winding fixture for coil windings. Background Technology
[0002] The stator assembly of an axial flux motor includes coil windings and a stator core assembled together. The coil windings need to be simultaneously clamped onto multiple stator teeth within the stator core. Specifically, the coil windings include multiple sets of sequentially connected winding structures. Each winding structure includes three coils connected in sequence, with the winding direction of the middle coil opposite to that of the two coils at the ends. Each coil is clamped onto a stator tooth.
[0003] In related technologies, such as Figure 1 and Figure 2 As shown, the coil winding is completed on the winding rod 3000. Specifically, multiple winding slots 3100 are arranged sequentially along the axial direction on the winding rod 3000. The wire is wound sequentially into the multiple winding slots 3100 to form multiple coils connected sequentially along the axial direction on the winding rod 3000. Then, the multiple coils wound along the axial direction are unwound from the winding rod 3000. During this process, the coils are manually rotated to meet the winding direction requirements of each coil in the coil winding structure. Finally, the rotated coils are clamped and fixed to the stator single tooth in sequence. Moreover, during the assembly of the coil winding and the stator core, the workers need to manually adjust the bridge wire between two adjacent coils, which greatly reduces the assembly efficiency of the stator assembly.
[0004] Therefore, there is an urgent need to invent a winding fixture for coil windings to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a winding fixture for coil windings, which is designed specifically for the structure of the stator core. This ensures that the structure of the winding fixture is similar to that of the stator core, allowing the coil windings wound on the fixture to be directly assembled with the stator core. This provides a feasible solution for the automated winding of axial flux motor coil windings and the automated winding assembly of the stator core and coil windings, thereby improving production efficiency, product quality, and product consistency.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] The winding fixture for the coil winding includes:
[0008] Chassis;
[0009] A winding assembly includes multiple winding structures and multiple guide posts. The multiple winding structures are circularly fixed to the radial end face of the chassis at first preset angular intervals around the central axis. Each winding structure has guide posts fixedly connected to the chassis at both ends around the central axis. The guide posts are configured to construct bridging wires. Each winding structure includes three winding coils arranged sequentially around the central axis at second preset angular intervals. Each winding coil is configured to construct a coil.
[0010] An ejector tray is movably disposed on the radial end face of the chassis on which the winding structure is provided, along the direction of the central axis. The ejector tray is capable of ejecting the coil wound on the winding tire from the winding tire along the central axis in a direction away from the chassis.
[0011] As an optional solution, the outer peripheral wall of the wound tire is provided with a guide slope along the direction of the central axis, and the guide slope extends from one end close to the chassis toward the direction away from the chassis along the direction of the central axis while tilting inward.
[0012] As an optional feature, the inclination angle of the guide ramp is 2° to 5°.
[0013] As an optional solution, the ejector tray has a plurality of first clearance through holes extending along the central axis, each of the first clearance through holes accommodating one of the winding tires.
[0014] As an optional solution, the ejector tray is provided with an ejector protrusion, which is disposed on the wall of the first clearance through hole and extends radially toward the center of the first clearance through hole. The winding coil is provided with a receiving groove extending along the central axis, which slides with the ejector protrusion. The ejector protrusion is configured to abut against the coil.
[0015] As an optional solution, the winding tire has receiving grooves at both ends along the radial direction of the chassis, and each receiving groove is corresponding to one of the ejector protrusions.
[0016] As an optional solution, the surface of the wound tire is polished;
[0017] And / or, the surface of the ejector tray is polished.
[0018] As an optional feature, the chassis is equipped with a wire-starting post and a wire-receiving post.
[0019] As an optional solution, the winding fixture for the coil winding further includes:
[0020] The fastener has a first fixing through hole extending along the central axis on the ejector tray and a second fixing through hole extending along the central axis on the chassis. The first fixing through hole and the second fixing through hole are coaxially arranged, and the fastener is detachably connected to the first fixing through hole and the second fixing through hole in sequence.
[0021] As an optional solution, the ejector tray is provided with a plurality of first fixing through holes at intervals, and each first fixing through hole is provided with a second fixing through hole and a fixing member.
[0022] The beneficial effects of this utility model are:
[0023] The coil winding fixture provided by this utility model fixes multiple winding structures in a circular pattern around the central axis of the chassis on the radial end face of the chassis at a first preset angular spacing. Each winding structure has additional wire guide posts at both ends around the central axis. Each winding structure includes three winding coils arranged sequentially around the central axis at a second preset angular spacing. The positional relationship of each winding coil relative to the chassis is the same as the positional relationship of each stator tooth within the stator core relative to the stator disk. When the wire is wound sequentially on the winding coils, it can simulate the winding of coils on stator teeth, ensuring that the relative positional relationship between the coils satisfies the assembly requirements of the coil winding and the stator core. The requirement is to provide a solution by setting an ejector tray on the radial end face of the winding structure fixed to the chassis. The ejector tray ejects the coil wound on the winding jig from the winding jig along the central axis in a direction away from the chassis, which can achieve rapid separation of the coil winding from the winding jig. Moreover, by making targeted designs based on the structure of the stator core, the structure of the winding jig of the coil winding is ensured to be similar to that of the stator core. This allows the coil winding completed on the winding jig of the coil winding to be directly assembled with the stator core. This provides a feasible solution for the automated winding of axial flux motor coil windings and the automated winding assembly of stator core and coil winding, improving production efficiency, product quality and product consistency. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the first structure of wire wound on a winding rod, provided by the background technology of this utility model;
[0025] Figure 2 This is a schematic diagram of the second structure provided by the background technology of this utility model, showing the wire wound on a winding rod.
[0026] Figure 3 This is a schematic diagram of the first structure of the winding fixture for the coil winding provided in Embodiment 1 of this utility model;
[0027] Figure 4This is a schematic diagram of the second structure of the winding fixture for the coil winding provided in Embodiment 1 of this utility model;
[0028] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;
[0029] Figure 6 yes Figure 4 A magnified view of a section at point B in the middle;
[0030] Figure 7 This is a schematic diagram of the third structure of the winding fixture for the coil winding provided in Embodiment 1 of this utility model.
[0031] Figure 8 This is a schematic diagram of the winding fixture for the coil winding provided in Embodiment 2 of this utility model.
[0032] In the picture:
[0033] 100. Winding assembly; 110. Winding structure; 111. Winding core; 1111. Receiving groove; 120. Wire guide post;
[0034] 200. Ejector tray; 210. Ejector protrusion; 220. First clearance through hole; 230. First fixing through hole; 240. Second clearance through hole; 250. Extension portion;
[0035] 300, chassis; 310, starting line column; 320, closing line column;
[0036] 2000, wire;
[0037] 3000, winding rod; 3100, winding groove. Detailed Implementation
[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0042] Example 1
[0043] This embodiment provides a stator assembly for an axial flux motor. The stator assembly includes coil windings and a stator core assembled together. The coil windings need to be simultaneously clamped onto multiple stator teeth within the stator core. Specifically, the coil windings include multiple sets of sequentially connected winding structures, each set including three coils sequentially connected, the winding direction of the middle coil being opposite to that of the two coils at the ends, and each coil being clamped onto a stator tooth. In related technologies, such as... Figure 1 and Figure 2 As shown, the coil winding is completed on the winding rod 3000. Specifically, multiple winding slots 3100 are arranged sequentially along the axial direction on the winding rod 3000. The wire is wound sequentially into the multiple winding slots 3100 to form multiple coils connected sequentially along the axial direction on the winding rod 3000. Then, the multiple coils wound along the axial direction are unwound from the winding rod 3000. During this process, the coils are manually rotated to meet the winding direction requirements of each coil in the coil winding structure. Finally, the rotated coils are clamped and fixed to the stator single tooth in sequence. Moreover, during the assembly of the coil winding and the stator core, the workers need to manually adjust the bridge wire between two adjacent coils, which greatly reduces the assembly efficiency of the stator assembly.
[0044] To solve the above problems, such as Figures 3-7As shown, this embodiment provides a winding fixture for a coil winding. The winding fixture includes a winding assembly 100, an ejector tray 200, and a chassis 300. The winding assembly 100 includes multiple winding structures 110 and multiple guide posts 120. The multiple winding structures 110 are circularly fixed to the radial end face of the chassis 300 at predetermined angular intervals around the central axis of the chassis 300. Each winding structure 110 has guide posts 120 fixedly connected to the chassis 300 at both ends around its central axis. The guide posts 120 are... Configured to construct a bridge wire, each winding structure 110 includes three winding coils 111 arranged sequentially around the central axis according to a second preset angular spacing. Each winding coil 111 is configured to construct a coil. The ejector tray 200 is movably disposed on the radial end face of the chassis 300 on which the winding structure 110 is provided, along the direction of the central axis. The ejector tray 200 can eject the coil wound on the winding coil 111 from the winding coil 111 along the central axis in a direction away from the chassis 300.
[0045] The winding fixture for this coil winding fixes multiple winding structures 110 in a circular pattern around the central axis of the chassis 300 on the radial end face of the chassis 300 at a first preset angular spacing. Each winding structure 110 has additional wire-passing posts 120 at both ends around its central axis. Each winding structure 110 includes three winding bobbins 111 arranged sequentially around its central axis at a second preset angular spacing. The positional relationship of each winding bobbin 111 relative to the chassis 300 is the same as the positional relationship of each stator tooth within the stator core relative to the stator disk. When the wire 2000 sequentially completes the winding of each coil on the winding bobbin 111, it can simulate the winding of coils on stator teeth, ensuring that the relative positional relationship between the coil windings and the stator core satisfies the requirements of the relationship between the coil winding and the stator core. To meet assembly requirements, an ejector tray 200 is provided on the radial end face of the winding structure 110 fixed on the chassis 300. The ejector tray 200 ejects the coil wound on the winding jig 111 from the winding jig 111 along the central axis in a direction away from the chassis 300. This enables rapid separation of the coil winding from the winding jig 111. Furthermore, by designing specifically according to the structure of the stator core, the structure of the winding jig for the coil winding is similar to that of the stator core. This allows the coil winding completed on the winding jig to be directly assembled with the stator core. This provides a feasible solution for the automated winding of axial flux motor coil windings and the automated insertion assembly of the stator core and coil windings, improving production efficiency, product quality, and product consistency.
[0046] It should be noted that in this embodiment, the coil winding has four winding structures, and the winding assembly 100 includes four winding structures 110. The first preset angular spacing is 90 degrees, and the second preset angular spacing is 20 degrees. The four winding structures 110 are fixed to the chassis 300 in a circular pattern around the central axis of the chassis 300 at angular spacings of 90 degrees. Each winding structure 110 includes three winding coils 111 arranged sequentially around the central axis at angular spacings of 20 degrees. In other embodiments, the specific values of the first preset angular spacing and the second preset angular spacing can be adaptively adjusted according to actual needs. This embodiment does not impose specific limitations on these values.
[0047] Furthermore, in this embodiment, the chassis 300 is provided with a starting post 310 and a taking post 320. Before winding the coil winding, the wire 2000 is first wound onto the starting post 310. After the coil winding is completed, the wire 2000 is wound onto the taking post 320.
[0048] To further reduce the difficulty of the coil detaching from the winding trolley 111, the surface of the winding trolley 111 and the surface of the ejector tray 200 are polished. By polishing the surfaces of the winding trolley 111 and the ejector tray 200 respectively, the surface roughness of the winding trolley 111 and the ejector tray 200 can be reduced, thereby reducing the friction between the winding trolley 111 and the coil, and the friction between the ejector tray 200 and the coil. In other embodiments, only the winding trolley 111 or only the ejector tray 200 may be polished; this embodiment does not impose a specific limitation.
[0049] As an optional feature, the outer peripheral wall of the winding coil 111 along the central axis is provided with a guide slope. The guide slope extends from the end near the chassis 300 towards the direction away from the chassis 300 along the central axis while tilting inward, so that the cross-sectional area of the winding coil 111 along the radial plane of the chassis 300 gradually decreases from the end near the chassis 300 towards the direction away from the chassis 300. When the ejector tray 200 ejects the coil wound on the winding coil 111 from the winding coil 111 along the central axis towards the direction away from the chassis 300, the gap between the coil and the winding coil 111 becomes larger and larger as the coil moves away from the chassis 300, which facilitates the separation of the coil from the winding coil 111.
[0050] It should be noted that, due to the presence of the guide ramp, the coil dimensions of the coils wound on the winding coil 111 are inconsistent along the central axis. However, in actual production, the inconsistency in coil dimensions can be ignored because the inclination of the guide ramp is relatively small.
[0051] Specifically, the inclination angle of the guide ramp is 2° to 5°. In this embodiment, the inclination angle of the guide ramp is 3°. In other embodiments, the inclination angle of the guide ramp can be adjusted arbitrarily within the range of 2° to 5° according to actual needs; this embodiment does not impose a specific limitation.
[0052] Optionally, the ejector tray 200 has a plurality of first clearance through holes 220 extending along the central axis, each first clearance through hole 220 accommodating a winding filament 111. By providing a plurality of first clearance through holes 220 on the ejector tray 200, each first clearance through hole 220 correspondingly accommodating a winding filament 111, when it is necessary to separate the coil on the winding filament 111 from the winding filament 111, the ejector tray 200 is driven to move relative to the winding filament 111 along the central axis in a direction away from the chassis 300, so that the ejector tray 200 abuts against the coil wound on the outer periphery of the winding filament 111 and drives the coil to move relative to the winding filament 111 until it separates from the winding filament 111.
[0053] In addition, in this embodiment, the ejector tray 200 is provided with a plurality of second clearance through holes 240 extending along the central axis, and each second clearance through hole 240 accommodates a wire post 120.
[0054] To further improve the ejection effect of the 200 pairs of coils from the ejector tray, such as... Figure 5 and Figure 6 As shown, the ejector tray 200 is provided with an ejector protrusion 210, which is disposed on the wall of the first clearance through hole 220 and extends radially toward the center of the first clearance through hole 220. The winding coil 111 is provided with a receiving groove 1111 extending along the central axis direction. The receiving groove 1111 slides with the ejector protrusion 210, and the ejector protrusion 210 is configured to abut against the coil. By additionally providing an ejector protrusion 210 on the wall of the first clearance through hole 220 and opening a receiving groove 1111 extending along the central axis on the winding coil 111, the ejector protrusion 210 and the receiving groove 1111 are slidably engaged. When the drive ejector tray 200 moves relative to the winding coil 111, the ejector protrusion 210 can slide in the receiving groove 1111. Since the ejector protrusion 210 extends into the receiving groove 1111, the contact stability between the ejector protrusion 210 and the coil wound on the outer peripheral wall of the winding coil 111 can be guaranteed, thereby ensuring the ejection effect of the coil.
[0055] Furthermore, in this embodiment, the winding coil 111 has receiving grooves 1111 at both ends of the radial direction of the chassis 300, and each receiving groove 1111 is correspondingly provided with a push-out protrusion 210. By providing receiving grooves 1111 at both ends of the winding coil 111 along the radial direction of the chassis 300, the coil can be pushed out from both ends of the radial direction simultaneously when pushing out the coil, further improving the pushing-out effect of the coil.
[0056] In an alternative embodiment, such as Figure 3 and Figure 4 As shown, the winding fixture for the coil winding also includes a fixing member. The ejector tray 200 has a first fixing through hole 230 extending along the central axis, and the base 300 has a second fixing through hole extending along the central axis. The first fixing through hole 230 and the second fixing through hole are coaxially arranged, and the fixing member is detachably connected to the first fixing through hole 230 and the second fixing through hole in sequence. By using the fixing member to detachably fix the ejector tray 200 to the base 300 in sequence with the first fixing through hole 230 on the ejector tray 200 and the second fixing through hole on the base 300, the detachable fixing of the ejector tray 200 and the base 300 is achieved. It should be noted that in this embodiment, the fixing member is a fixing pin, which is simultaneously inserted and fixed to the first fixing through hole 230 and the second fixing through hole. The insertion fixing method is convenient for assembly and disassembly and has a good fixing effect. In other embodiments, the fixing member can also be detachably fixed to the first fixing through hole 230 and the second fixing through hole in sequence by threaded fixing; this embodiment does not specifically limit this method.
[0057] To further improve the fixing effect between the ejector tray 200 and the chassis 300, the ejector tray 200 is provided with a plurality of first fixing through holes 230 at intervals, and each first fixing through hole 230 is correspondingly provided with a second fixing through hole and a fixing component. It should be noted that in this embodiment, the winding fixture of the coil winding includes five fixing components, the ejector tray 200 is provided with five first fixing through holes 230, and the chassis 300 is provided with five second fixing through holes, each first fixing through hole 230 being correspondingly provided with a second fixing through hole and a fixing component. In other embodiments, the specific number of first fixing through holes 230, second fixing through holes, and fixing components can be adaptively adjusted according to actual needs; this embodiment does not impose specific limitations.
[0058] Example 2
[0059] This embodiment provides a winding fixture for a coil winding. The winding fixture for the coil winding provided in this embodiment is basically the same as that in Embodiment 1. The difference between the winding fixture for the coil winding provided in this embodiment and that in Embodiment 1 is that the specific structure of the ejector tray 200 is different.
[0060] Specifically, such as Figure 8As shown, the ejector tray 200 within the winding fixture for the coil winding provided in this embodiment further includes an extension portion 250. The extension portion 250 is disposed at one end of the partial ejector protrusion 210 away from the chassis 300 along the central axis direction. The extension portion 250 extends along the central axis direction and is configured to abut against the coil. In this embodiment, when the coil is wound on the winding jig 111, the individual coils may be positioned differently along the central axis direction on the winding jig 111. When the ejector tray 200 simultaneously ejects multiple coils from their respective winding jigs 111, the ejector protrusions 210 on the ejector tray 200 will first contact the coil closest to the ejector tray 200 along the central axis. At this time, the remaining coils have not yet contacted the ejector protrusions 210. Only as the ejector tray 200 continues to move can the remaining coils be ejected from their respective winding jigs 111. After the coils are ejected, the multiple coils are aligned along the central axis, disrupting the relative positions of the coils along the central axis. When the coils move relative to the other coils along the central axis, they will inevitably pull on the bridge wires, thus affecting the arrangement of the bridge wires and consequently affecting the assembly of the subsequent coil windings and stator core. This embodiment provides a winding fixture for coil windings by additionally providing an extension portion 250 extending along the central axis direction within the ejection tray 200. The extension portion 250 is located at the end of the ejection protrusion 210 away from the chassis 300 along the central axis direction. The extension portion 250 abuts against the coil. The extension distance of the extension portion 250 can be adjusted according to actual needs. During the process of ejecting the coil, the extension portion 250 and the ejection protrusion 210 simultaneously abut against the corresponding coil, so that each coil is released from the winding jig 111 while maintaining a constant relative position along the central axis direction, further improving the ejection effect of the coil windings.
[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A winding fixture for coil windings, characterized in that, include: Chassis (300); A winding assembly (100) includes multiple winding structures (110) and multiple guide posts (120). The multiple winding structures (110) are circularly fixed to the radial end face of the chassis (300) at intervals of a first preset angular distance around the central axis of the chassis (300). Each winding structure (110) has guide posts (120) fixedly connected to the chassis (300) at both ends around the central axis. The guide posts (120) are configured to construct bridging wires. Each winding structure (110) includes three winding coils (111) arranged sequentially around the central axis at a second preset angular distance. Each winding coil (111) is configured to construct a coil. An ejector tray (200) is movably disposed on the radial end face of the chassis (300) on which the winding structure (110) is provided, along the direction of the central axis. The ejector tray (200) is capable of ejecting the coil wound on the winding bobbin (111) from the winding bobbin (111) along the central axis in a direction away from the chassis (300).
2. The winding fixture for the coil winding according to claim 1, characterized in that, The winding tire (111) has a guide slope on its outer peripheral wall along the direction of the central axis. The guide slope extends from one end near the chassis (300) away from the chassis (300) along the direction of the central axis and is inclined inward.
3. The winding fixture for the coil winding according to claim 2, characterized in that, The inclination angle of the guide ramp is 2° to 5°.
4. The winding fixture for the coil winding according to any one of claims 1 to 3, characterized in that, The ejector tray (200) has a plurality of first clearance through holes (220) extending along the central axis, each of the first clearance through holes (220) accommodating one of the winding tires (111).
5. The winding fixture for the coil winding according to claim 4, characterized in that, The ejector tray (200) is provided with an ejector protrusion (210), which is disposed on the wall of the first clearance through hole (220) and extends radially toward the center of the first clearance through hole (220). The winding coil (111) is provided with a receiving groove (1111) extending along the central axis. The receiving groove (1111) slides with the ejector protrusion (210), and the ejector protrusion (210) is configured to abut against the coil.
6. The winding fixture for the coil winding according to claim 5, characterized in that, The winding tire (111) has receiving grooves (1111) at both ends along the radial direction of the chassis (300), and each receiving groove (1111) is correspondingly provided with a top protrusion (210).
7. The winding fixture for the coil winding according to any one of claims 1 to 3, characterized in that, The surface of the wound tire (111) is polished; And / or, the surface of the ejector tray (200) is polished.
8. The winding fixture for the coil winding according to any one of claims 1 to 3, characterized in that, The chassis (300) is equipped with a starting post (310) and a taking post (320).
9. The winding fixture for the coil winding according to any one of claims 1 to 3, characterized in that, The winding fixture for the coil winding also includes: The fastener has a first fixing through hole (230) extending along the central axis on the ejector tray (200) and a second fixing through hole extending along the central axis on the chassis (300). The first fixing through hole (230) and the second fixing through hole are coaxially arranged, and the fastener is detachably connected to the first fixing through hole (230) and the second fixing through hole in sequence.
10. The winding fixture for the coil winding according to claim 9, characterized in that, The ejector tray (200) is provided with a plurality of first fixing through holes (230) spaced apart, and each first fixing through hole (230) is provided with a second fixing through hole and a fixing member corresponding to one of the first fixing through holes.