Wire winding tool of linear motor

By using a combined tooling of winding die core and auxiliary die core in a linear motor, the problems of lead-out and damage to the insulation layer during winding of the stator coil are solved, and the smooth transition and separation of the coil are achieved, which improves the reliability of the coil. Sex and service life.

CN222192100UActive Publication Date: 2024-12-17CSR ZHUZHOU ELECTRIC CO LTD
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Patent Information

Application Number
CN202420130734.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-18
Publication Date
2024-12-17
Estimated Expiration
2034-01-18

AI Technical Summary

Technical Problem

During the winding process of the stator coil of a linear motor, the head and tail leads are out of the outer side of the coil nose, which makes it difficult to exit the coil leads, the transition radius of the turn is small, and the bending is difficult, which can easily cause extrusion and damage to the insulation layer.

Method used

Using a winding tool including a winding die core and an auxiliary die core, the winding die core is wound into inner turns and outer turns through a guide block guide coil. The transition table of the auxiliary die core separates the inner turns and outer turns to avoid interference and extrusion. , reduce the risk of insulating layer damage.

Benefits of technology

The coil is stacked and separated, avoiding interference and extrusion between the coils, reducing the risk of insulating layer damage, and improving the reliability and service life of the coil.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a winding tool of a linear motor, which comprises a winding mold core and an auxiliary mold core, the winding mold core comprises a winding block and a guide block fixedly arranged at one end of the winding block, and the auxiliary mold core is detachably arranged at one end, far away from the guide block, of the winding block. During winding, a coil is wound along the outer side face of the guide block, the coil is wound to the winding block from the outer side face of the guide block under the guidance of the guide block, the coil is wound into an inner turn coil and an outer turn coil on the winding block in a lap mode, the inner turn coil and the outer turn coil which are wound in a lap mode are separated through the transition table, and the inner turn coil is smoothly transited to the outer turn coil. According to the coil winding device, the coils can be wound in a lap mode, the inner-turn coil and the outer-turn coil which are wound in the lap mode can be separated, a large space is formed between the inner-turn coil and the outer-turn coil, interference and extrusion cannot be generated, and the risk that insulating layers of the coils are damaged is reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of linear motor assembly, in particular to a winding tool for a linear motor. Background Art

[0002] Linear motors have the advantages of simple structure, high positioning accuracy and long service life. High-speed maglev trains are a typical example of the practical application of linear motors. As the core component of linear motors, the quality and reliability of stator coils are of great significance to the normal operation of linear motors.

[0003] There are differences between the stator coils of linear motors and those of traditional asynchronous motors. The head and tail leads of traditional stator coils are respectively led out from the inside and outside of the coil nose. However, due to the tight gap at the nose of the stator coil of the linear motor, the traditional lead-out method will make it difficult to lead out the coil. Therefore, in order to solve the problem of lead-out of the stator coil of the linear motor, the head and tail leads of the stator coil are both led out from the outside of the coil nose, which requires the stator coil to be able to achieve staggered transposition of the turns during winding.

[0004] However, the stator coil of the linear motor adopts a four-turn stacked winding and double-layer parallel winding method. The stator coil lead wires are all located on the outside. The wire turn transition needs to transition from the inner diameter of the nose. The transition radius is small, and the coil is difficult to bend. There is interference in the wire turn transition process, which can easily cause extrusion. The surface insulation of the coil is easily dislocated under large stress extrusion, which makes the insulation layer of the stator coil easy to be damaged. Utility Model Content

[0005] The utility model aims to provide a winding tool for a linear motor, which can separate the inner turn coil and the outer turn coil of the stacked coil, and the coil is not squeezed, thus solving the technical problem that the insulation layer of the existing coil is easily damaged due to squeezing.

[0006] In order to achieve the above-mentioned object, the utility model provides a winding tool for a linear motor, comprising:

[0007] The winding mold core comprises a winding block and a guide block fixed at one end of the winding block, the guide block is used to guide the coil wound on its outer side surface to be wound to the winding block so that the coil is stacked on the winding block to form an inner turn coil and an outer turn coil;

[0008] The auxiliary mold core is detachably mounted on one end of the winding block away from the guide block. The auxiliary mold core is provided with a transition platform, which is used to separate the stacked inner turn coil and the outer turn coil so that the inner turn coil can smoothly transition to the outer turn coil.

[0009] Preferably, the auxiliary mold core comprises a U-shaped block provided with a transition platform, and the concave side of the U-shaped block coincides with the convex side of the winding block.

[0010] Preferably, the convex side of the winding block is in an arc shape.

[0011] Preferably, the transition platform includes an inner turn transition portion integrally fixed to one side of the U-shaped block and an outer turn transition portion integrally fixed vertically to the inner turn transition portion.

[0012] Preferably, the thickness of the inner turn transition portion increases gradually.

[0013] Preferably, the outer turn transition portion is in an arc shape.

[0014] Preferably, the auxiliary mold core further comprises an operating handle fixedly arranged on a side of the U-shaped block away from the transition platform.

[0015] Preferably, the guide block has a guide plane, which is coplanar with the forming plane of the winding block.

[0016] Preferably, a wire baffle is integrally fixedly provided at one end of the winding mold core close to the guide block, and the wire baffle is used to prevent the coil from escaping from the winding mold core.

[0017] Preferably, the winding mold core is provided with a plurality of penetrating fixing holes, fixing bolts are installed in the fixing holes, and the winding mold core is fixed to the base by the fixing bolts.

[0018] Compared with the background technology, the winding tooling of the linear motor provided by the utility model includes a winding core and an auxiliary core, the winding core includes a winding block and a guide block fixed at one end of the winding block, and the auxiliary core is detachably mounted on the end of the winding block away from the guide block. When winding, the coil is first wound along the outer side of the guide block, and under the guidance of the guide block, the coil is wound from the outer side of the guide block to the winding block, and the coil is stacked on the winding block to form an inner turn coil and an outer turn coil, and the stacked inner turn coil and outer turn coil are then separated by a transition table, so that the inner turn coil smoothly transitions to the outer turn coil.

[0019] The utility model can not only realize overlapping winding of the coil, but also separate the inner turn coil and the outer turn coil of the overlapping winding, so that there is a larger space between the inner turn coil and the outer turn coil, and no interference and extrusion will occur, thereby reducing the risk of damage to the insulation layer of the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A diagram showing the disassembled state of the winding tooling of the linear motor provided by the embodiment of the utility model;

[0022] Figure 2 A diagram showing the combined state of the winding tooling for the linear motor provided by the embodiment of the utility model;

[0023] Figure 3 for Figure 1 The structural diagram of the transition platform on the middle auxiliary mold core;

[0024] Figure 4 A winding principle diagram of a winding tool for a linear motor provided by an embodiment of the utility model;

[0025] Figure 5 This is a state diagram when the coil is stacked into inner turn coil and outer turn coil;

[0026] Figure 6 This is the state diagram when the inner turn coil smoothly transitions to the outer turn coil.

[0027] The reference numerals are as follows:

[0028] Winding core 1, winding block 11, guide block 12, guide plane 121, wire baffle 13, fixing hole 14, auxiliary core 2, transition platform 21, inner turn transition part 211, outer turn transition part 212, U-shaped block 22, operating handle 23, inner turn coil 31 and outer turn coil 32. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] The utility model discloses a winding tool for a linear motor, which winds a coil in a four-turn overlapping winding and double-layer parallel winding manner, and two lead wires of the coil are both located on the outside.

[0032] Attached Figure 1 and 2 As shown, the winding tooling of the linear motor includes a winding core 1 and an auxiliary core 2. The winding core 1 includes a winding block 11 and a guide block 12. The cross section of the winding block 11 is in a runway shape, so that the nose radius of the wound coil is large enough to avoid the coil being squeezed due to the small transition radius of the winding block 11. The guide block 12 is fixed at one end of the winding block 11.

[0033] The guide block 12 is used to guide the coil wound on its outer side to be wound to the winding block 11 so that the coil is stacked on the winding block 11 to form an inner turn coil 31 and an outer turn coil 32. Figure 5 The outer side surface of the guide block 12 includes two parts, namely, an annular surface and a guide surface. The annular surface is wound with a coil, and the guide surface is used to guide the coil to be wound on the winding block 11. The cross-sectional shape of the annular surface is the same as the cross-sectional shape of the winding block 11, but the cross-sectional area of ​​the annular surface is larger than the cross-sectional size of the winding block 11.

[0034] The auxiliary mold core 2 can be detachably mounted on one end of the winding block 11 away from the guide block 12. The auxiliary mold core 2 is provided with a transition platform 21. The transition platform 21 is used to separate the inner turn coil 31 and the outer turn coil 32 of the stacked winding so that the inner turn coil 31 smoothly transitions to the outer turn coil 32. Figure 6 shown.

[0035] When winding, the coil is first wound along the outer side surface of the guide block 12. Under the guidance of the guide block 12, the coil is wound from the outer side surface of the guide block 12 to the winding block 11. The coil is stacked on the winding block 11 to form an inner turn coil 31 and an outer turn coil 32. The stacked inner turn coil 31 and outer turn coil 32 are then separated by the transition table 21, so that the inner turn coil 31 smoothly transitions to the outer turn coil 32.

[0036] The utility model can not only realize overlapping winding of the coils, but also separate the overlapping inner turn coil 31 and the outer turn coil 32, so that there is a larger space between the inner turn coil 31 and the outer turn coil 32, and no interference and extrusion will occur, thereby reducing the risk of damage to the insulation layer of the coil.

[0037] The auxiliary mold core 2 includes a U-shaped block 22 with a transition platform 21. The concave side of the U-shaped block 22 matches the convex side of the winding block 11 to avoid the auxiliary mold core 2 being misaligned during the winding process and affecting the winding quality. The convex side of the winding block 11 is in an arc shape to avoid the coil from being squeezed during the winding process. The radius of the convex side of the winding block 11 can reach 25 mm, but is not limited thereto.

[0038] As attached Figure 3 As shown, the transition platform 21 includes an inner turn transition portion 211 integrally fixed to one side of the U-shaped block 22 and an outer turn transition portion 212 integrally fixed vertically to the inner turn transition portion 211. The inner turn transition portion 211 is used to guide the winding of the inner turn coil 31, and the outer turn transition portion 212 is used to guide the winding of the outer turn coil 32. The inner turn transition portion 211 is protruding from the side of the U-shaped block 22. In the winding direction, the thickness of the inner turn transition portion 211 gradually increases, and the inner turn transition portion 211 is in an arc shape. The outer turn transition portion 212 is in an arc shape, and the curvature of the outer turn transition portion 212 is consistent with the curvature of the inner turn transition portion 211.

[0039] The auxiliary mold core 2 also includes an operating handle 23 fixedly arranged on the side of the U-shaped block 22 away from the transition platform 21, which facilitates the disassembly and assembly of the auxiliary mold core 2. The operating handle 23 can be welded and fixed in a specific manner, but is not limited thereto.

[0040] The guide block 12 has a guide plane 121, which is coplanar with the molding plane of the winding block 11, so that the inner turn coil 31 smoothly transitions to the outer turn coil 32. A wire blocking plate 13 is integrally fixed at one end of the winding core 1 close to the guide block 12 to prevent the coil from escaping from the winding core 1.

[0041] The winding mold core 1 is provided with a plurality of through fixing holes 14, and fixing bolts are installed in the fixing holes 14, and the winding mold core 1 is fixed to the base by the fixing bolts. All the fixing holes 14 are evenly distributed along the width direction of the winding mold core 1. Of course, the fixing method of the winding mold core 1 is not limited to this.

[0042] As attached Figure 4 As shown, the winding principle of the winding tooling of the linear motor provided by the utility model is as follows:

[0043] First, the coil is wound from one side of the winding core 1, with position 1 being the starting position of the coil, and winding 180° to position 2;

[0044] Second, the coil is wound 360° along the winding core 1 to the inner circle on the same side, i.e. position 3, while the tension of the winding machine is maintained;

[0045] Third, wind 540° to position 4 on the inner circle on the same side;

[0046] Fourth, when winding 720° along the winding core 1 again, the coil is wound from one inner circle to the other inner circle to reach position 5;

[0047] Fifth, wind to 900° to position 6, and put the auxiliary mold core 2 on one side of the winding mold core 1;

[0048] Sixth, when you start winding again to 1080°, smoothly transition the inner circle position of coil No. 6 to the outer circle position No. 7;

[0049] Seventh, when winding for the last 1260°, the coil comes out from position 8.

[0050] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0051] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A winding tool for a linear motor, characterized in that: include: A winding mold core (1), the winding mold core (1) comprising a winding block (11) and a guide block (12) fixedly arranged at one end of the winding block (11), the guide block (12) being used to guide the coil wound on its outer side surface to be wound around the winding block (11) so that the coil is stacked on the winding block (11) to form an inner turn coil (31) and an outer turn coil (32); An auxiliary mold core (2) is detachably mounted on one end of the winding block (11) away from the guide block (12), and the auxiliary mold core (2) is provided with a transition platform (21). The transition platform (21) is used to separate the stacked inner turn coil (31) and the outer turn coil (32) so that the inner turn coil (31) smoothly transitions to the outer turn coil (32).

2. The winding tooling for a linear motor according to claim 1, characterized in that: The auxiliary mold core (2) comprises a U-shaped block (22) provided with the transition platform (21), and the concave side of the U-shaped block (22) coincides with the convex side of the winding block (11).

3. The winding tooling for a linear motor according to claim 2, characterized in that: The convex side of the winding block (11) is in an arc shape.

4. The winding tooling for a linear motor according to claim 2, characterized in that: The transition platform (21) comprises an inner turn transition portion (211) integrally fixed to one side of the U-shaped block (22) and an outer turn transition portion (212) integrally fixed vertically to the inner turn transition portion (211).

5. The winding tooling for a linear motor according to claim 4, characterized in that: The thickness of the inner turn transition portion (211) gradually increases.

6. The winding tool for a linear motor according to claim 4, characterized in that: The outer turn transition portion (212) is in an arc shape.

7. The winding tooling for a linear motor according to claim 2, characterized in that: The auxiliary mold core (2) also includes an operating handle (23) fixedly arranged on a side of the U-shaped block (22) away from the transition platform (21).

8. The winding tool for a linear motor according to any one of claims 1 to 7, characterized in that: The guide block (12) has a guide plane (121), and the guide plane (121) is coplanar with the molding plane of the winding block (11).

9. The winding tool for a linear motor according to any one of claims 1 to 7, characterized in that: A wire baffle (13) is integrally fixedly provided at one end of the winding mold core (1) close to the guide block (12), and the wire baffle (13) is used to prevent the coil from detaching from the winding mold core (1).

10. The winding tool for a linear motor according to any one of claims 1 to 7, characterized in that: The winding mold core (1) is provided with a plurality of penetrating fixing holes (14), fixing bolts are installed in the fixing holes (14), and the winding mold core (1) is fixed to the base via the fixing bolts.