Coil winding jig
By incorporating clearance grooves and expansion components into the winding fixture, the problem of rapid coil winding removal is solved, enabling damage-free coil winding removal and improving winding protection and overall aesthetics.
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
- 2026-06-23
Smart Images
Figure CN224401344U_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] An axial flux motor comprises a stator assembly and a rotor assembly. The stator assembly includes coil windings and a stator core. The coil windings and the stator core are separately formed and then assembled together.
[0003] In related technologies, coil windings are formed by winding wire around the axial outer circumference of a winding fixture. After the coil winding is completed on the winding fixture, it needs to be removed. To ensure the winding effect, the wire needs to be tightly wound around the outer circumference of the winding fixture, especially for multi-strand, multi-layered, and complex-shaped coil windings. This results in significant friction between the formed coil winding and the winding fixture, making it difficult to remove the coil winding from the winding jig along its axial direction. Forcibly applying external force to remove the coil winding from the winding jig can easily damage it.
[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 utility model is to provide a winding fixture for coil windings, so that after the coil windings are wound on the winding fixture, the coil windings can be quickly and without damage removed from the winding fixture.
[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] Multiple wound tires, the multiple wound tires being arranged in a circular pattern around the central axis of the chassis on the radial end face of the chassis; and
[0010] Multiple expansion members are provided, each of which is detachably connected to the chassis. Each winding filament has a first clearance groove at one end of the chassis radially away from the central axis. The first clearance groove extends axially along the chassis. Each expansion member is correspondingly provided with one of the first clearance grooves. The expansion member is partially located within the first clearance groove, and the remaining part of the expansion member extends outward along the radial direction of the first clearance groove. The expansion members and the winding filament together constitute a winding unit for winding wire.
[0011] As an optional solution, the depth of the first clearance groove along the radial direction is D1, the length of the wound tire along the radial direction is D0, and D1 ≤ D0 / 5;
[0012] The width of the first clearance groove around the axial direction is L1, and the length of the winding tire around the axial direction at the end away from the central axis along the radial direction is L0, where L1 ≤ L0 / 3.
[0013] Alternatively, the wound tire may have a fan-shaped cross-section along the radial direction;
[0014] The first clearance groove has a semi-circular cross-section along the radial direction;
[0015] The expansion member has a circular cross-section along the radial direction;
[0016] The volume of the expansion member located within the first clearance groove is the same as the volume of the expansion member extending out of the first clearance groove.
[0017] As an optional solution, a winding structure is formed by three winding units arranged sequentially around the central axis. The fixture includes multiple sets of the winding structures, which are arranged in a circular interval around the central axis. The winding directions of the wires corresponding to two adjacent winding units in each set of the winding structure are opposite.
[0018] As an optional solution, the winding fixture for the coil winding further includes:
[0019] The guide wire is fixedly connected to the chassis. One guide wire is provided between each pair of adjacent winding structures. The guide wire is used for winding the bridge wire.
[0020] As an optional solution, the guide wire and the winding structure are arranged in a circular interval around the central axis. Each guide wire has a second clearance groove at one end away from the central axis along the radial direction. Each second clearance groove is corresponding to one of the expansion members. The expansion member is partially located in the second clearance groove, and the remaining part of the expansion member extends outward along the radial direction into the second clearance groove.
[0021] As an optional solution, the chassis has mounting through holes extending along the axial direction, and each expansion member is detachably inserted and fixed to one of the mounting through holes.
[0022] Alternatively, the radial dimension of the expansion member gradually decreases along the axial direction from one end near the mounting through hole toward the direction away from the mounting through hole;
[0023] And / or, the radial dimension of the mounting through hole gradually increases along the axial direction from the end away from the wound tire toward the end closer to the wound tire.
[0024] As an optional solution, the winding fixture for the coil winding further includes:
[0025] The ejector structure has multiple output ends, each of which is corresponding to one of the expansion members. The ejector structure can individually drive each output end to move along the axial direction to eject the expansion member that is inserted and fixed to the mounting through hole.
[0026] As an optional solution, the surface of the wound tire is polished;
[0027] The surface of the expansion member is polished.
[0028] The beneficial effects of this utility model are:
[0029] The winding fixture for the coil winding provided by this utility model fixes multiple winding coils at circular intervals around the central axis of the chassis on the upper surface of the chassis. A first clearance groove extending axially from the chassis is provided at one end of each winding coil radially away from the central axis. Each first clearance groove corresponds to an expansion member, which is detachably connected to the chassis. The expansion member is partially located within the first clearance groove, while the remaining portion extends radially outward from the first clearance groove. The expansion member and the corresponding winding coil together constitute the wire supply. In the winding of the coil, the expansion member increases the radial dimension of the winding unit. After the coil winding is completed on the winding unit, the expansion member is removed from the chassis to reduce the radial dimension of the winding unit. This creates a radial gap between the coil winding tightly wound on the winding unit and the winding unit, facilitating the axial removal of the coil winding from the winding unit. This allows for rapid removal of the coil winding relative to the winding unit without damaging the coil winding, thus improving the protection of the coil winding. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the structure of the winding fixture for the coil winding provided by this utility model;
[0031] Figure 2 This is a schematic diagram of the first structure of the wound tire provided in this embodiment of the utility model;
[0032] Figure 3 This is a schematic diagram of the second structure of the wound tire provided in this embodiment of the utility model.
[0033] In the picture:
[0034] 100, Wound tire; 110, First clearance groove; 200, Expansion piece; 300, Chassis; 400, Overhead tire; 410, Second clearance groove. Detailed Implementation
[0035] 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.
[0036] 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.
[0037] 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.
[0038] 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.
[0039] In related technologies, coil windings are formed by winding wire around the axial outer circumference of a winding fixture. After the coil winding is completed on the winding fixture, it needs to be removed. To ensure the winding effect, the wire needs to be tightly wound around the outer circumference of the winding fixture, especially for multi-strand, multi-layered, and complex-shaped coil windings. This results in significant friction between the formed coil winding and the winding fixture, making it difficult to remove the coil winding from the winding jig along its axial direction. Forcibly applying external force to remove the coil winding from the winding jig can easily damage it.
[0040] To solve the above problems, such as Figures 1-3 As shown, this embodiment provides a winding fixture for a coil winding. The winding fixture includes a chassis 300, multiple winding bobbins 100, and multiple expansion members 200. The multiple winding bobbins 100 are arranged in a circular pattern around the central axis of the chassis 300 on the radial end face of the chassis 300. Each expansion member 200 is detachably connected to the chassis 300. Each winding bobbin 100 has a first clearance groove 110 at one end of the chassis 300 that is radially away from the central axis. The first clearance groove 110 extends axially along the chassis 300. Each expansion member 200 corresponds to one first clearance groove 110. A portion of the expansion member 200 is located within the first clearance groove 110, and the remaining portion extends radially outward from the first clearance groove 110. The expansion member 200 and the winding bobbins 100 together constitute a winding unit for winding wire.
[0041] The winding fixture for this coil winding fixes fixes multiple winding jigs 100 at circular intervals around the central axis of the chassis 300 on the radial end face of the chassis 300. Each winding jig 100 has a first clearance groove 110 extending axially from the chassis 300 at one end radially away from the central axis. Each first clearance groove 110 corresponds to an expansion member 200. The expansion member 200 is detachably connected to the chassis 300, ensuring that part of the expansion member 200 is located within the first clearance groove 110, and the remaining part of the expansion member 200 extends radially outward from the first clearance groove 110. Together with the corresponding winding sheath 100, the expansion member 200 forms a winding unit for winding wire. When winding the coil winding, the expansion member 200 can increase the radial dimension of the winding unit. After the coil winding is completed on the winding unit, the expansion member 200 is removed from the chassis 300 to reduce the radial dimension of the winding unit, so that there is a radial gap between the coil winding tightly wound on the winding unit and the winding unit, so that the coil winding can be removed from the winding unit axially. This achieves rapid removal of the coil winding relative to the winding unit without damaging the coil winding, thus improving the protection of the coil winding.
[0042] To further enhance the protection of the coil winding, the surfaces of the winding core 100 and the expansion member 200 are polished. Polishing the surfaces of the winding core 100 and the expansion member 200 reduces their surface roughness, thereby reducing the friction between the winding core 100 and the coil winding, and also reducing the friction between the expansion member 200 and the coil winding, facilitating the removal of the coil winding.
[0043] Furthermore, in this embodiment, the radial dimension of the winding trolley 100 gradually decreases as it extends axially from one end near the chassis 300 toward the end away from the chassis 300, in order to further facilitate the radial disengagement of the coil winding from the winding trolley 100.
[0044] The radial cross-section of the inner coil of the existing axial flux motor is fan-shaped. To meet the shape requirements of the coil winding, the cross-section of the winding core 100 along the radial direction is fan-shaped, so as to ensure that the winding unit 100 and the expansion member 200 are combined into a fan-shaped whole.
[0045] To further ensure that the wire can be wound into a fan-shaped coil in the winding unit, the radial depth of the first clearance groove 110 is D1, and the radial length of the winding coil 100 is D0, where D1 ≤ D0 / 5; the axial width of the first clearance groove 110 is L1, and the axial length of the winding coil 100 at the end furthest from the central axis is L0, where L1 ≤ L0 / 3. It should be noted that in this embodiment, D1 = D0 / 5, and L1 = L0 / 3. In other embodiments, the specific values of D1 and D0 can be arbitrarily adjusted within the range where D1 is not greater than D0 / 5, and the specific values of L1 and L0 can be arbitrarily adjusted within the range where L1 is not greater than L0 / 3. This embodiment does not impose specific limitations on these values.
[0046] Furthermore, in this embodiment, the radial cross-section of the first clearance groove 110 is semi-circular, and the radial cross-section of the expansion member 200 is circular. The volume of the expansion member 200 within the first clearance groove 110 is the same as the volume of the expansion member 200 extending out of the first clearance groove 110. In other embodiments, the radial cross-sectional shapes of the first clearance groove 110 and the expansion member 200 can be adjusted according to actual needs, as long as the volume of the expansion member 200 within the first clearance groove 110 is the same as the volume extending out of the first clearance groove 110. This embodiment does not impose specific limitations.
[0047] The coil winding provided in this embodiment includes four sets of sequentially connected winding structures. Each set of winding structures includes three sequentially connected coils, and the winding directions of any two adjacent coils within each set are opposite. To adapt to this coil winding, in this embodiment, three winding units arranged sequentially around the central axis constitute one set of winding structures. The fixture includes four sets of winding structures, which are arranged in a circular interval around the central axis. The winding directions of the wires corresponding to two adjacent winding units within each set are opposite. In other embodiments, the specific number of winding structures can be adaptively adjusted according to the specific number of winding structures within the coil winding; this embodiment does not impose a specific limitation.
[0048] To facilitate the arrangement of the bridging wire between two adjacent winding structures within the coil winding, the winding fixture provided in this embodiment also includes a wire guide 400. The wire guide 400 is fixedly connected to the chassis 300, and one wire guide 400 is provided between each pair of adjacent winding structures. The wire guide 400 is used for winding the bridging wire. After the wire has completed winding one set of winding structures on one set of winding structures, before transferring the wire to the next set of winding structures for the next set of winding structures, the wire is first wound with the bridging wire on the wire guide 400 between two adjacent sets of winding structures.
[0049] As an optional solution, the guide wire 400 and the winding structure are arranged in a circular interval around the central axis of the chassis 300. Each guide wire 400 is provided with a second clearance groove 410 at one end radially away from the central axis. Each second clearance groove 410 is correspondingly provided with an expansion member 200. Part of the expansion member 200 is located in the second clearance groove 410, and the remaining part of the expansion member 200 extends radially outward from the second clearance groove 410. By rotating the guide wire 400 and the winding structure together around the central axis of the chassis 300, the overall aesthetics of the winding fixture for the coil winding can be improved. By providing a second clearance groove 410 at one end of the guide wire 400 radially away from the central axis of the chassis 300, and providing an expansion member 200 detachably connected to the chassis 300 in each second clearance groove 410, and ensuring that part of the expansion member 200 is located in the second clearance groove 410, with the remaining part of the expansion member 200 extending radially outward from the second clearance groove 410, the expansion member 200 and the corresponding guide wire 400 can form a guide wire structure similar to the winding structure. When the bridging wire is wound on the guide wire structure, the expansion member 200 can increase the size of the guide wire structure. When it is necessary to remove the bridging wire from the guide wire structure, the expansion member 200 inside the guide wire structure is removed to reduce the radial size of the guide wire structure.
[0050] In one alternative embodiment, the chassis 300 has axially extending mounting holes, and each expansion member 200 is detachably inserted and fixed to a mounting through hole. By providing mounting through holes on the chassis 300 for detachable insertion and fixing to the expansion member 200, the assembly and disassembly of the chassis 300 and the expansion member 200 can be facilitated.
[0051] Specifically, the radial dimension of the expansion member 200 gradually decreases along the axial direction from the end near the mounting through hole to the direction away from the mounting through hole, while the radial dimension of the mounting through hole gradually increases along the axial direction from the end away from the winding tube 100 to the direction near the winding tube 100. A first guide slope can be formed on the outer peripheral wall of the expansion member 200 along the axial direction, and a second guide slope can be formed on the inner wall of the mounting through hole. When the expansion member 200 is inserted and fixed with the mounting through hole, the first guide slope and the second guide slope can not only provide guidance for the insertion of the expansion member 200 with the mounting through hole, but also ensure the stability of the insertion of the expansion member 200 with the mounting through hole.
[0052] It should be noted that in other embodiments, the radial dimension of the expansion member 200 may be gradually reduced along the axial direction from the end near the mounting through hole to the direction away from the mounting through hole, so as to provide only the first guide slope, or the radial dimension of the mounting through hole may be gradually increased along the axial direction from the end away from the winding tube 100 to the direction near the winding tube 100, so as to provide only the second guide slope. This embodiment does not make specific limitations.
[0053] To further improve the separation efficiency between the expansion member 200 and the mounting through hole, the winding fixture of the coil winding also includes an ejector structure. The ejector structure has multiple output ends, each of which is corresponding to an expansion member 200. The ejector structure can drive each output end to move axially independently to eject the expansion member 200 that is inserted and fixed to the mounting through hole.
[0054] Specifically, the ejection structure includes multiple linear cylinders and multiple ejector pins. The output end of each linear cylinder is connected to an ejector pin. Each ejector pin is located at the end of the chassis 300 away from the winding trolley 100 along the axial direction and has a mounting through hole facing each other. The linear cylinder is configured to drive the corresponding ejector pin to move axially. When it is necessary to remove the expansion member 200 from the chassis 300, the ejection mechanism first ejects the expansion member 200 from the mounting hole to facilitate subsequent gripping of the expansion member 200.
[0055] 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); Multiple wound tires (100) are arranged in a circular pattern around the central axis of the chassis (300) on the radial end face of the chassis (300); as well as Multiple expansion members (200) are provided, each of which is detachably connected to the chassis (300). Each winding bobbin (100) is provided with a first clearance groove (110) at one end of the chassis (300) away from the central axis. The first clearance groove (110) extends along the axial direction of the chassis (300). Each expansion member (200) is provided with one first clearance groove (110). Part of the expansion member (200) is located in the first clearance groove (110), and the remaining part of the expansion member (200) extends outward along the first clearance groove (110) in the radial direction. The expansion member (200) and the winding bobbin (100) together constitute a winding unit for winding wire.
2. The winding fixture for the coil winding according to claim 1, characterized in that, The depth of the first clearance groove (110) along the radial direction is D1, and the length of the winding tire (100) along the radial direction is D0, where D1 ≤ D0 / 5; The width of the first clearance groove (110) around the axial direction is L1, and the length of the winding bobbin (100) around the axial direction at the end away from the central axis along the radial direction is L0, where L1 ≤ L0 / 3.
3. The winding fixture for the coil winding according to claim 1, characterized in that, The cross-section of the wound tire (100) along the radial direction is fan-shaped; The first clearance groove (110) has a semi-circular cross-section along the radial direction; The expansion member (200) has a circular cross-section along the radial direction; The volume of the expansion member (200) located within the first clearance groove (110) is the same as the volume of the expansion member (200) extending out of the first clearance groove (110).
4. The winding fixture for the coil winding according to claim 1, characterized in that, The jig includes multiple sets of the winding structures, with three winding units arranged sequentially around the central axis as a group of winding structures. The multiple sets of winding structures are arranged in a circular interval around the central axis. The winding directions of the wires corresponding to two adjacent winding units in each set of winding structures are opposite.
5. The winding fixture for the coil winding according to claim 4, characterized in that, The winding fixture for the coil winding also includes: A guide wire (400) is fixedly connected to the chassis (300). One guide wire (400) is provided between each two adjacent sets of winding structures. The guide wire (400) is used for winding the bridge wire.
6. The winding fixture for the coil winding according to claim 5, characterized in that, The guide wires (400) and the winding structure are arranged in a circular interval around the central axis. Each guide wire (400) has a second clearance groove (410) at one end away from the central axis along the radial direction. Each second clearance groove (410) is correspondingly provided with one of the expansion members (200). Part of the expansion member (200) is located in the second clearance groove (410), and the remaining part of the expansion member (200) extends outward along the radial direction into the second clearance groove (410).
7. The winding fixture for the coil winding according to claim 1, characterized in that, The chassis (300) has mounting through holes extending along the axial direction, and each expansion member (200) is detachably inserted and fixed to one of the mounting through holes.
8. The winding fixture for the coil winding according to claim 7, characterized in that, The radial dimension of the expansion member (200) gradually decreases along the axial direction from one end near the mounting through hole toward the direction away from the mounting through hole; And / or, the radial dimension of the mounting through hole gradually increases along the axial direction from one end away from the winding tire (100) toward the direction closer to the winding tire (100).
9. The winding fixture for the coil winding according to claim 7, characterized in that, The winding fixture for the coil winding also includes: The ejector structure has multiple output ends, each of which is corresponding to one of the expansion members (200). The ejector structure can drive each output end to move along the axial direction individually to eject the expansion member (200) that is inserted and fixed to the mounting through hole.
10. The winding fixture for the coil winding according to claim 1, characterized in that, The surface of the wound tire (100) is polished; The surface of the expansion member (200) is polished.