Wire winding shaping apparatus and wire winding shaping method

Abstract

To provide a winding shaping device that can efficiently shape winding.SOLUTION: A shaping nozzle 40 has a nozzle hole 42 into which a winding end 201 can be inserted which is an end of winding 200 extending from a stator core 110. A bending guide 60 can lock a winding base end 202 that is a base end of the winding 200 extending from the stator core 110. A bending post can lock a winding intermediate part 203 that is a portion between the winding base end 202 and the winding end 201 of the winding 200. The shaping nozzle 40 is movable in an arbitrary direction with respect to a stator 100 in a state where the winding end 201 is inserted into the nozzle hole 42, and the winding base end 202 is locked to the bending guide 60, and is movable in an arbitrary direction with respect to the stator 100 in a state where the winding intermediate part 203 is locked to the bending post.SELECTED DRAWING: Figure 4

Description

Technical Field

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[0001] The present invention relates to a winding shaping device and a winding shaping method.

Background Art

[0002] Conventionally, a winding shaping device for shaping a winding in the manufacturing process of a rotating electrical machine is known. For example, Patent Document 1 discloses a winding shaping device that shapes the end portion of a winding wound around a rotor of a rotating electrical machine and fixes it to a riser of a commutator.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The winding shaping device of Patent Document 1 includes a number of drive units such as a winding hand for gripping the end portion of the winding, a winding presser for pressing the winding against the inner side of the bent portion of the riser, a caulking portion for caulking and fixing the winding to the riser, and a cutter for cutting the winding, and shapes the end portion of the winding by driving these drive units in a complicated manner. Therefore, there is a possibility that the shaping of the winding cannot be performed efficiently.

[0005] An object of the present invention is to provide a winding shaping device and a winding shaping method capable of efficiently shaping a winding.

Means for Solving the Problems

[0006] <A first aspect of the present invention is a winding shaping apparatus for shaping windings (200) wound around each of the stator cores (110) of a stator (100) having a plurality of annularly arranged stator cores (110), comprising a shaping nozzle (40), a bending guide (60), and a bending post (80). The shaping nozzle has a nozzle hole (42) into which a winding end (201), which is the end of a winding extending from a stator core, can be inserted. The bending guide can lock onto a winding base end (202), which is the base end of a winding extending from a stator core.

[0007] The bending post can engage with the winding intermediate portion (203), which is the portion between the winding base end and the winding end. The shaping nozzle is movable in any direction relative to the stator with the winding end inserted into the nozzle hole and the winding base end engaged with the bending guide, and is also movable in any direction relative to the stator with the winding intermediate portion engaged with the bending post.

[0008] In this embodiment, first, with the winding end inserted into the nozzle hole and the winding base end locked to the bending guide, the shaping nozzle can be moved in any direction relative to the stator, thereby bending the winding base end and the winding specific portion (206), which is the portion of the winding near the tip of the winding shaping nozzle, into a crank shape. Furthermore, with the winding middle portion locked to the bending post, the shaping nozzle can be moved in any direction relative to the stator, thereby bending the winding middle portion to a predetermined angle, for example, into a "V" shape. Therefore, the winding can be efficiently shaped into a relatively complex bending state.

[0009] A second aspect of the present invention is a winding shaping method for shaping windings (200) wound around each of the stator cores (110) of a stator (100) having a plurality of annularly arranged stator cores (110), comprising a winding end insertion step, a winding base end locking step, a crank bending step, a winding intermediate locking step, and a winding bending step. In the winding end insertion step, the winding end (201), which is the end of the winding extending from the stator core, is inserted into the nozzle hole (42) of a shaping nozzle (40). In the winding base end locking step, the winding base end (202), which is the base end of the winding extending from the stator core, is locked with a bending guide (60).

[0010] In the crank bending process, with the winding end inserted into the nozzle hole and the winding base end locked to the bending guide, the shaping nozzle is moved in any direction relative to the stator, and the winding base end and the winding In the portion of the winding end that is outside the nozzle hole Shaping nozzle near beside Located A specific winding section (206) is bent into a crank shape. In the winding intermediate section locking process, the winding intermediate section (203), which is the part of the winding between the winding base end and the winding end, is locked with a bending post (80). In the winding bending process, with the winding intermediate section locked with the bending post, the shaping nozzle or bending post is moved in any direction relative to the stator to bend the winding intermediate section to a predetermined angle.

[0011] In this embodiment, first, the base end and specific portion of the winding can be bent into a crank shape by a crank bending process. Furthermore, the middle portion of the winding can be bent at a predetermined angle by a winding bending process, for example, into a "V" shape. Therefore, the winding can be efficiently shaped into a relatively complex bending state. In the first and second embodiments, the nozzle bore is formed to allow insertion of two winding ends. The shaping nozzle is rotatable about the axis of the nozzle bore. The nozzle bore has a restricting portion (421) that can restrict the change in the relative position of the two winding ends with respect to the shaping nozzle when the shaping nozzle rotates. Furthermore, in the first and second embodiments, the bent post has a post body (81), a post extension portion (82) formed to extend from the post body, and a winding holding portion (83) formed to extend from the post extension portion and capable of holding the winding intermediate portion between itself and the post body. [Brief explanation of the drawing]

[0012] [Figure 1] A plan view showing a winding shaping apparatus and stator according to the first embodiment. [Figure 2] (A) is a cross-sectional view showing the shaping nozzle and a part of the winding of the winding shaping apparatus according to the first embodiment, and (B) is a cross-sectional view of (A) along line IIB-IIB. [Figure 3] A perspective view showing a winding shaping apparatus and stator according to the first embodiment. [Figure 4] A plan view showing a winding shaping apparatus and stator according to the first embodiment. [Figure 5] A plan view showing a winding shaping apparatus and stator according to the first embodiment. [Figure 6] A plan view showing a winding shaping apparatus and stator according to the first embodiment. [Figure 7]Perspective view showing a winding shaping device and a part of the stator according to the first embodiment. [Figure 8] Plan view showing a winding shaping device and a stator according to the first embodiment. [Figure 9] Plan view showing a stator with winding shaping completed by the winding shaping device of the first embodiment. [Figure 10] Perspective view showing a stator with winding shaping completed by the winding shaping device of the first embodiment. [Figure 11] View showing a part of the winding with shaping completed by the winding shaping device of the first embodiment. [Figure 12] Perspective view showing a stator with winding shaping completed by the winding shaping device of the comparative form. [Figure 13] View showing a part of the winding with shaping completed by the winding shaping device of the comparative form. [Figure 14] View showing a part of the bending post of the winding shaping device according to the second embodiment. [Figure 15] View showing a part of the bending post of the winding shaping device according to the first embodiment.

Embodiments for Carrying Out the Invention

[0013] Hereinafter, a winding shaping device and a winding shaping method according to a plurality of embodiments will be described based on the drawings. In the plurality of embodiments, substantially the same constituent parts are denoted by the same reference numerals, and the description thereof is omitted. Also, in order to avoid complication of the drawings, the reference numerals attached to a plurality of identical constituent parts are appropriately omitted. Further, a long constituent part or an enlarged constituent part is shown in the drawing in a state where it is appropriately cut or omitted.

[0014] [ (First Embodiment) A part of the winding shaping device according to the first embodiment is shown in FIGS. 1 to 8.

[0015] The winding shaping apparatus 1 is a device for shaping the windings 200 wound around each of the stator cores 110 of the stator 100. Here, the stator 100 is used, for example, as the stator of a three-phase brushless motor. The stator 100 has a plurality of stator cores 110 arranged in a ring.

[0016] More specifically, the stator 100 includes a stator core 110, an insulator 120, and a winding 200. In this embodiment, the stator 100 has 12 stator cores 110. The stator core 110 is formed, for example, from laminated steel sheets. The stator core 110 has core ends 111 and teeth 112. The core ends 111 are formed such that the cross-sectional shape perpendicular to the lamination direction of the laminated steel sheets is substantially arc-shaped. The teeth 112 are formed integrally with the core ends 111 so as to extend radially inward from the center of the core ends 111.

[0017] The insulator 120 is made of, for example, resin and is provided so as to cover the teeth 112 of each stator core 110. The winding 200 is made of, for example, a conductive material and is provided on the stator core 110 so as to be wound around the insulator 120 provided on each tooth 112.

[0018] The stator 100 is assembled by arranging 12 stator cores 110 in a ring shape such that the teeth 112 face radially inward and the core ends 111 are connected to each other in the circumferential direction.

[0019] Before being shaped by the winding shaping device 1, the windings 200 extend from each stator core 110 in a direction parallel to the axis of the stator 100 on one side in the axial direction Ax1 of the annular stator 100. Hereinafter, the end of the winding 200 extending from the stator core 110 will be referred to as the winding end 201, the base end as the winding base end 202, and the portion between the winding base end 202 and the winding end 201 as the winding intermediate portion 203. The two windings 200 are connected by a jumper wire on the other side in the axial direction of the stator 100. Furthermore, before being shaped by the winding shaping device 1, the windings 200 have a covered portion 204 and a stripped portion 205. The covered portion 204 is the part of the winding 200 that is covered with an insulating coating material. The peeled portion 205 is the part of the winding 200 from which the insulating coating has been peeled off, and is provided in a part of the winding end 201 (see Figure 2).

[0020] <1> The winding shaping apparatus 1 comprises a shaping nozzle 40, a bending guide 60, and a bending post 80. The shaping nozzle 40 has a nozzle hole 42 into which a winding end 201, which is the end of a winding 200 extending from a stator core 110, can be inserted. The bending guide 60 can lock onto a winding base end 202, which is the base end of a winding 200 extending from a stator core 110.

[0021] The bending post 80 can engage with the winding intermediate portion 203, which is the portion of the winding 200 between the winding base end 202 and the winding end 201. The shaping nozzle 40 is movable in any direction relative to the stator 100 with the winding end 201 inserted into the nozzle hole 42 and the winding base end 202 engaged with the bending guide 60, and is also movable in any direction relative to the stator 100 with the winding intermediate portion 203 engaged with the bending post 80.

[0022] The configuration of the winding shaping device 1 will be described in more detail below.

[0023] The shaping nozzle 40 has a nozzle body 41 and a nozzle hole 42. The nozzle body 41 is formed in a substantially cylindrical shape. The nozzle hole 42 is formed to extend from the end of the nozzle body 41 in the axial direction of the nozzle body 41 (see Figure 2(A)). The shaping nozzle 40 is installed so that its axis is parallel to the axis of the stator 100. Here, "parallel" means not only a state in which the two axes are strictly parallel, but also a state in which they are slightly non-parallel (the same applies hereinafter).

[0024] <2> The nozzle hole 42 is formed to allow insertion of the two winding ends 201 (see Figure 2).

[0025] More specifically, the nozzle hole 42 has an elongated shape in its cross-section perpendicular to the axis. In other words, the nozzle hole 42 is formed to have an elongated shape when viewed from the axial direction of the nozzle body 41 (see Figure 2(B)). This allows the nozzle hole 42 to be inserted together or simultaneously with the two winding ends 201. The outer edge of the end of the nozzle body 41 and the area around the nozzle hole 42 are tapered by chamfering.

[0026] The length of the nozzle hole 42 in the long axis direction is set to be slightly larger than the combined length of the diameters of the two windings 200. Also, the length of the nozzle hole 42 in the short axis direction is set to be slightly larger than the diameter of one winding 200. Therefore, when the two windings 200 are inserted into the nozzle hole 42, a predetermined gap is formed between the windings 200 and the inner circumferential wall of the nozzle hole 42 (see Figure 2(B)).

[0027] <3> The shaping nozzle 40 is rotatable around the axis of the nozzle hole 42. The nozzle hole 42 has a restricting portion 421 that can restrict the change in the relative position of the two winding ends 201 with respect to the shaping nozzle 40 when the shaping nozzle 40 rotates.

[0028] More specifically, the restricting portion 421 is provided on the inner circumferential wall of the nozzle hole 42 (see Figure 2(B)). The restricting portion 421 can contact the outer circumferential wall of the winding end 201. When the shaping nozzle 40 rotates, the restricting portion 421 contacts the outer circumferential wall of the winding end 201 and can restrict the change in the relative position of the two winding end 201 with respect to the shaping nozzle 40. Therefore, by rotating the shaping nozzle 40 relative to the stator 100, the relative position of the two winding end 201 with respect to the stator 100 can be changed.

[0029] <4> The winding shaping apparatus 1 further includes an insertion guide 70. The insertion guide 70 holds the two winding ends 201 close together and can guide the insertion of the two winding ends 201 into the nozzle hole 42 (see Figures 1, 2(A), and 3).

[0030] The bending guide 60 has a bending guide body 61, a bending guide locking portion 62, and a bending guide locking portion 63 (see Figures 1, 3, and 4). The bending guide body 61 is formed, for example, in the shape of a long plate. The bending guide locking portion 62 is formed integrally with the bending guide body 61 so as to extend longitudinally from one end in the short direction of the end of the bending guide body 61. The bending guide locking portion 63 is formed integrally with the bending guide body 61 so as to extend longitudinally from the other end in the short direction of the end of the bending guide body 61. A predetermined gap is formed between the bending guide locking portion 62 and the bending guide locking portion 63. The bending guide 60 can lock the base end 202 of the winding 200 with the bending guide locking portion 62 and the bending guide locking portion 63.

[0031] The bent post 80 has a post body 81 and a post extension 82 (see Figures 5-7). The post extension 82 is formed to extend from the post body 81.

[0032] More specifically, the post body 81 is formed, for example, in the shape of a long plate. The post extension 82 is formed integrally with the post body 81 so as to extend in a substantially cylindrical shape in the thickness direction from one end surface of the post body 81.

[0033] The winding shaping apparatus 1 further comprises a control unit 10. The control unit 10 is, for example, a computer, and controls the operation of each part of the winding shaping apparatus 1 based on a program stored in the memory unit or input operation instructions. The control unit 10 can individually control the operation of the insertion guide 70, the shaping nozzle 40, the bending guide 60, and the bending post 80 so that they move in any direction relative to the stator 100.

[0034] The control unit 10 can move the shaping nozzle 40 in any direction relative to the stator 100 while the axis of the shaping nozzle 40 is parallel to the axis of the stator 100. The control unit 10 can also rotate the shaping nozzle 40 around the axis of the nozzle hole 42.

[0035] Next, the winding shaping method of this embodiment will be described.

[0036] <6> The winding shaping method of this embodiment includes a winding end insertion step, a winding base end locking step, a crank bending step, a winding intermediate locking step, and a winding bending step. In the winding end insertion step, the winding end 201, which is the end of the winding 200 extending from the stator core 110, is inserted into the nozzle hole 42 of the shaping nozzle 40. In the winding base end locking step, the winding base end 202, which is the base end of the winding 200 extending from the stator core 110, is locked with a bending guide 60.

[0037] In the crank bending process, with the winding end 201 inserted into the nozzle hole 42 and the winding base end 202 locked to the bending guide 60, the shaping nozzle 40 is moved in any direction relative to the stator 100 to bend the winding base end 202 and the winding specific portion 206, which is the portion of the winding 200 near the tip of the shaping nozzle 40, into a crank shape. In the winding intermediate portion locking process, the winding intermediate portion 203, which is the portion of the winding 200 between the winding base end 202 and the winding end 201, is locked to the bending post 80. In the winding bending process, with the winding intermediate portion 203 locked to the bending post 80, the shaping nozzle 40 or the bending post 80 is moved in any direction relative to the stator 100 to bend the winding intermediate portion 203 to a predetermined angle.

[0038] Next, the winding shaping method using the winding shaping apparatus 1 will be explained in more detail based on Figures 1 to 8.

[0039] In the following description, the direction parallel to the axial direction of the annular stator 100 will be referred to as the y-axis direction, the direction perpendicular to the y-axis as the x-axis direction, and the direction perpendicular to both the y-axis and x-axis as the z-axis direction. Here, the positive direction of the y-axis corresponds to the direction in which the winding 200 extends from the stator core 110 before being shaped by the winding shaping device 1. The xz plane is a plane perpendicular to the y-axis. The shaping nozzle 40 is positioned such that its axis is parallel to the axis of the stator 100, that is, its axis is parallel to the y-axis.

[0040] For convenience, in Figure 1, etc., the windings 200 extending from each stator core 110 are designated as windings 211, 212, 221, 222, 231, 232, 241, 242, 251, 252, 261, and 262, respectively, in the circumferential direction of the stator 100.

[0041] As shown in Figures 1-3, during the winding end insertion process, the control unit 10 holds the two winding ends 201 close together using the insertion guide 70 and controls the operation of the shaping nozzle 40 so that the two winding ends 201 are inserted into the nozzle hole 42. As a result, the two winding ends 201 are inserted into the nozzle hole 42.

[0042] Figures 1-3 show the state after the shaping of windings 211 and 212 has been completed, followed by the start of shaping of windings 221 and 222, and after the winding end insertion process for windings 221 and 222 has been completed.

[0043] As shown in Figure 2(A), when the winding end insertion process is completed, the peeled portion 205 of the winding 200 is located inside the shaping nozzle 40, that is, inside the nozzle hole 42. The portion of the winding 200 that is located outside the nozzle hole 42 and near the tip of the shaping nozzle 40 is the winding specific portion 206.

[0044] As shown in Figures 1 and 3, in the winding base end locking process, the control unit 10 controls the operation of the bending guide 60 to lock the winding base end 202 of the winding 221 on the opposite side of the bending guide locking part 63 of the bending guide locking part 62, and to lock the winding base end 202 of the winding 222 between the bending guide locking part 62 and the bending guide locking part 63.

[0045] As shown in Figures 1 and 4, in the crank bending process, the control unit 10 moves the shaping nozzle 40 in any direction relative to the stator 100, with the winding end 201 inserted into the nozzle hole 42 and the winding base end 202 locked to the bending guide 60, thereby bending the winding base end 202 and the specific winding portion 206 into a crank shape.

[0046] More specifically, in the crank bending process, the control unit 10 inserts the winding ends 201 of windings 221 and 222 into the nozzle hole 42, locks the winding base ends 202 of windings 221 and 222 into the bending guide 60, and moves the shaping nozzle 40 relative to the stator 100 in any direction that is negative in the y-axis, x-axis, and z-axis directions (see Figures 1 and 4). As a result, the winding base ends 202 locked by the bending guide 60 and the winding specific portion 206, which is the part near the tip of the shaping nozzle 40, bend in a crank shape (see Figure 4).

[0047] Here, the direction of movement of the shaping nozzle 40 in the crank bending process coincides with the short axis direction of the nozzle hole 42 when viewed from the axial direction of the stator 100. That is, in the crank bending process, the control unit 10 rotates the shaping nozzle 40 around the axis of the nozzle hole 42, aligning the short axis direction of the nozzle hole 42 with the direction of movement of the shaping nozzle 40, and then moves the shaping nozzle 40 relative to the stator 100. Here, "coincidence" means not only a state in which the two directions, etc., exactly coincide, but also a state in which they do not coincide slightly (the same applies hereinafter).

[0048] As shown in Figure 5, in the winding intermediate locking process after the crank bending process, the control unit 10 locks the winding intermediate portion 203 of the winding 221 with the post extension portion 82 of the bending post 80.

[0049] As shown in Figures 5-7, in the winding bending process after the winding intermediate portion locking process, the control unit 10 moves the shaping nozzle 40 and the bending post 80 in any direction relative to the stator 100, while the winding intermediate portion 203 of the winding 221 is locked to the post extension portion 82 of the bending post 80, thereby bending the winding intermediate portion 203 to a predetermined angle.

[0050] More specifically, with the intermediate portion 203 of the winding 221 locked to the bending post 80, the control unit 10 moves the shaping nozzle 40 in any direction relative to the stator 100 that is negative in the x-axis direction and positive in the z-axis direction, and moves the bending post 80 in any direction relative to the stator 100 that is negative in the x-axis direction and negative in the z-axis direction, bending the intermediate portion 203 of the winding to a predetermined angle in the xz plane (see Figures 5 and 6). As a result, when viewed from the axial direction of the stator 100, the intermediate portions 203 of the windings 221 and 222 are bent in a "V" shape (see Figure 6).

[0051] In this embodiment, the winding shaping method further includes a nozzle rotation step. In the nozzle rotation step, with the winding end 201 inserted into the nozzle hole 42, the shaping nozzle 40 is rotated around the axis of the nozzle hole 42.

[0052] As shown in Figures 6 and 8, in the nozzle rotation process following the winding bending process, the control unit 10 rotates the shaping nozzle 40 around the axis of the nozzle hole 42 with the winding ends 201 of windings 221 and 222 inserted into the nozzle hole 42, so that the long axis direction of the nozzle hole 42 coincides with the radial direction of the stator 100 (see Figure 8). This makes it possible to align the winding ends 201 of winding 221 and winding ends 201 of winding 222 in the radial direction of the stator 100 when viewed from the axial direction of the stator 100.

[0053] After the nozzle rotation process, the control unit 10 releases the locking of the winding base end 202 by the bending guide 60 and the locking of the winding middle section 203 by the bending post 80, and moves the shaping nozzle 40 so that the winding end 201 comes out of the nozzle hole 42. Then, the control unit 10 rotates the stator 100 in the circumferential direction and starts shaping the windings 231 and 232.

[0054] Once the shaping of windings 231 and 232 is complete, the control unit 10 sequentially starts shaping windings 241 and 242, windings 251 and 252, and windings 261 and 262. The shaping methods for windings 211 and 212, windings 231 and 232, windings 241 and 242, windings 251 and 252, and windings 261 and 262 are the same as the shaping methods for windings 221 and 222 described above.

[0055] Note that the direction of movement of the shaping nozzle 40 and bending post 80, etc., in shaping windings 241 and 242, windings 251 and 252, and windings 261 and 262 is different from the direction of movement of the shaping nozzle 40 and bending post 80, etc., in shaping windings 211 and 212, windings 221 and 222, and windings 231 and 232.

[0056] Figures 9 and 10 show the stator 100 after the shaping of windings 211 and 212, windings 221 and 222, windings 231 and 232, windings 241 and 242, windings 251 and 252, and windings 261 and 262 has been completed, i.e., after the shaping of all windings 200 has been completed. As shown in Figure 9, when viewed from the axial direction of the stator 100, the winding ends 201 of winding 211 and winding 212, the winding ends 201 of winding 221 and winding 222, the winding ends 201 of winding 231 and winding 232, the winding ends 201 of winding 241 and winding 242, the winding ends 201 of winding 251 and winding 252, the winding ends 201 of winding 261 and winding 262 are all aligned in the radial direction of the stator 100.

[0057] As shown in Figure 11(A), when viewed from the y-axis direction, the middle section 203 of the winding is bent at a predetermined angle in the xz-plane, resulting in a "V" shape. As shown in Figure 11(B), when viewed from the z-axis direction, the base section 202 of the winding and the specific section 206 of the winding are bent in a crank shape. As shown in Figures 9, 10, and 11(C), in the y-axis direction, windings 221 and 222 overlap with windings 241 and 242, windings 231 and 232 overlap with windings 241 and 242, and windings 231 and 232 overlap with windings 251 and 252, meaning that each winding 200 intersects in three dimensions.

[0058] By shaping the winding 200 as shown in Figures 9 and 10, it is possible to easily connect the terminals of a busbar, which has six terminals provided in a specific circumferential range of the stator 100, to the stripped portion 205 of the winding 200. Furthermore, since the two winding ends 201 are aligned radially with the stator 100, it is possible to easily connect the terminals of the busbar to the stripped portion 205 of the winding 200 and to stabilize the connection between the terminals and the stripped portion 205.

[0059] Next, Figure 12 shows the stator after winding shaping has been completed using the comparative winding shaping apparatus.

[0060] The winding shaping apparatus in the comparative configuration does not have a bending post 80. Therefore, it is not possible to bend the winding intermediate portion 203 of the winding 200 to a predetermined angle in the xz plane. After shaping, the winding intermediate portion 203 of each winding 200 is straight along the radial direction of the stator 100 (see Figure 12). The winding base end portion 202 and the specific winding portion 206 are shaped into a crank shape (see Figures 12 and 13).

[0061] By shaping the winding 200 as shown in Figure 12, it becomes easier to connect, for example, the terminals of a busbar, which has six terminals provided at equal intervals in the circumferential direction of the stator 100, to the stripped portion 205 of the winding 200.

[0062] This embodiment is advantageous over the comparative embodiment in that it allows the winding 200 to be shaped into a relatively complex bending state to accommodate a specific busbar terminal arrangement.

[0063] As explained above, <1> In the winding shaping apparatus 1 of this embodiment, the shaping nozzle 40 is movable in any direction relative to the stator 100 with the winding end portion 201 inserted into the nozzle hole 42 and the winding base end portion 202 locked to the bending guide 60, and the winding middle portion 203 is movable in any direction relative to the stator 100 with the winding middle portion 203 locked to the bending post 80.

[0064] In this embodiment, first, with the winding end 201 inserted into the nozzle hole 42 and the winding base end 202 locked to the bending guide 60, the shaping nozzle 40 can be moved in any direction relative to the stator 100, thereby bending the winding base end 202 and the winding specific portion 206, which is the portion of the winding 200 near the tip of the shaping nozzle 40, into a crank shape. Also, with the winding middle portion 203 locked to the bending post 80, the shaping nozzle 40 can be moved in any direction relative to the stator 100, bending the winding middle portion 203 to a predetermined angle, for example, into a "V" shape. Therefore, the winding 200 can be efficiently shaped into a relatively complex bending state.

[0065] Also, <2> In this embodiment, the nozzle hole 42 is formed to allow insertion of two winding ends 201.

[0066] Therefore, the winding 200 can be shaped more efficiently.

[0067] Also, <3> In this embodiment, the shaping nozzle 40 is rotatable around the axis of the nozzle hole 42. The nozzle hole 42 has a restricting portion 421 that can restrict the change in the relative position of the two winding ends 201 with respect to the shaping nozzle 40 when the shaping nozzle 40 rotates.

[0068] Therefore, by rotating the shaping nozzle 40 relative to the stator 100, the relative positions of the two winding ends 201 with respect to the stator 100 can be changed.

[0069] Also, <4> In this embodiment, the winding shaping apparatus 1 further includes an insertion guide 70. The insertion guide 70 holds the two winding ends 201 close to each other and can guide the insertion of the two winding ends 201 into the nozzle hole 42.

[0070] Therefore, the two winding ends 201 can be easily inserted into the nozzle hole 42, and the winding 200 can be shaped more efficiently.

[0071] Also, <6> In the crank bending step of the winding shaping method of this embodiment, with the winding end 201 inserted into the nozzle hole 42 and the winding base end 202 locked to the bending guide 60, the shaping nozzle 40 is moved in any direction relative to the stator 100 to bend the winding base end 202 and the winding specific portion 206, which is the portion of the winding 200 near the tip of the shaping nozzle 40, into a crank shape. In the winding intermediate portion locking step, the winding intermediate portion 203, which is the portion of the winding 200 between the winding base end 202 and the winding end 201, is locked to the bending post 80. In the winding bending step, with the winding intermediate portion 203 locked to the bending post 80, the shaping nozzle 40 or the bending post 80 is moved in any direction relative to the stator 100 to bend the winding intermediate portion 203 to a predetermined angle.

[0072] In this embodiment, first, the base end portion 202 and the specific portion 206 of the winding can be bent into a crank shape by a crank bending process. Furthermore, the intermediate portion 203 of the winding can be bent at a predetermined angle by a winding bending process, for example, into a "V" shape. Therefore, the winding 200 can be efficiently shaped into a relatively complex bending state.

[0073] Also, <7> In this embodiment, the nozzle hole 42 is formed to allow insertion of two winding ends 201.

[0074] Therefore, the winding 200 can be shaped more efficiently.

[0075] (Second Embodiment) Figure 14 shows a part of the winding shaping apparatus according to the second embodiment. The configuration of the bending post 80 in the second embodiment differs from that of the first embodiment.

[0076] <5> In this embodiment, the bent post 80 further has a winding holding portion 83. The winding holding portion 83 is formed to extend from the post extension portion 82 and is capable of holding the intermediate portion 203 of the winding between itself and the post body 81.

[0077] More specifically, the winding holding portion 83 is integrally formed with the post body 81 so as to extend parallel to the post body 81 from the end of the post extension portion 82 opposite to the post body 81.

[0078] In the bending post 80 of the first embodiment, it is ideal that the two intermediate winding portions 203 are aligned perpendicular to the post extension portion 82 during the winding bending process (see Figure 15(A)). However, because the bending post 80 does not have a winding holding portion 83, the two intermediate winding portions 203 may be aligned parallel to the post extension portion 82 (see Figure 15(B)), or the intermediate winding portions 203 may detach from the post extension portion 82 (see Figure 15(C)).

[0079] In contrast, in this embodiment, as shown in Figure 14, the winding holding portion 83 can hold the winding intermediate portion 203, so that in the winding bending process, the two winding intermediate portions 203 can be aligned perpendicular to the post-extension portion 82, and the winding intermediate portions 203 can be prevented from falling off the post-extension portion 82.

[0080] (Other embodiments) In other embodiments, the nozzle hole does not need to be formed to accommodate two winding ends, as long as it can accommodate one winding end. In this case, the nozzle hole may be formed with a cross-sectional shape perpendicular to the axis, for example, a perfect circle.

[0081] In the above-described embodiment, an example was shown in which the nozzle hole is formed such that the cross-sectional shape perpendicular to the axis is an elongated hole shape, and a restricting portion is provided on the inner circumferential wall of the nozzle hole. In contrast, in other embodiments, the restricting portion may be provided in any manner as long as it can restrict the change in the relative position of the two winding ends with respect to the shaping nozzle when the shaping nozzle rotates. Furthermore, the nozzle hole does not have to be formed in an elongated hole shape in the cross-sectional shape perpendicular to the axis; for example, it may be formed in a shape such as two connected circles or a rectangle.

[0082] In other embodiments, the shaping nozzle does not need to be rotatable around the axis of the nozzle hole. Also, the nozzle hole does not need to have a restricting portion.

[0083] In other embodiments, the insertion guide may not be provided.

[0084] In another embodiment, during the winding bending process, with the intermediate portion of the winding locked to the bending post, either the shaping nozzle or the bending post may be moved in an arbitrary direction relative to the stator to bend the intermediate portion of the winding to a predetermined angle.

[0085] The features of this disclosure are as follows: "Disclosure 1" A winding shaping apparatus for shaping windings (200) wound around each of the stator cores (110) of a stator (100) having a plurality of stator cores (110) arranged in a ring, A shaping nozzle (40) having a nozzle hole (42) into which a winding end (201), which is the end of the winding extending from the stator core, can be inserted, A bending guide (60) capable of engaging the winding base end (202), which is the base end of the winding extending from the stator core, The winding includes a bending post (80) capable of engaging the winding intermediate portion (203), which is the portion of the winding between the winding base end and the winding end, The aforementioned shaping nozzle is With the winding end inserted into the nozzle hole and the winding base end locked to the bending guide, the winding is movable in any direction relative to the stator. A winding shaping device that is movable in any direction relative to the stator, with the intermediate portion of the winding locked to the bending post. "Disclosure 2" The winding shaping apparatus according to disclosure 1, wherein the nozzle hole is formed to allow insertion of two winding ends. "Disclosure 3" The shaping nozzle is rotatable around the axis of the nozzle hole, The winding shaping apparatus according to disclosure 2, wherein the nozzle hole has a restricting portion (421) that can restrict the change in the relative position of the two winding ends with respect to the shaping nozzle when the shaping nozzle rotates. "Disclosure 4" A winding shaping apparatus according to disclosure 2 or 3, further comprising an insertion guide (70) capable of holding the two winding ends close to each other and guiding the insertion of the two winding ends into the nozzle hole. "Disclosure 5" The winding shaping apparatus according to any one of disclosures 1 to 4, wherein the bending post comprises a post body (81), a post extension portion (82) formed to extend from the post body, and a winding holding portion (83) formed to extend from the post extension portion and capable of holding the intermediate portion of the winding between itself and the post body. "Disclosure 6" A winding shaping method for shaping windings (200) wound around each of the stator cores (110) of a stator (100) having a plurality of stator cores (110) arranged in a ring, A winding end insertion step involves inserting the winding end (201), which is the end of the winding extending from the stator core, into the nozzle hole (42) of the shaping nozzle (40). A winding base end locking step is performed by locking the winding base end (202), which is the base end of the winding extending from the stator core, with a bending guide (60), With the winding end inserted into the nozzle hole and the winding base end locked to the bending guide, the shaping nozzle is moved in an arbitrary direction relative to the stator, and the winding base end and the winding specific portion (206), which is the portion of the winding near the tip of the shaping nozzle, are bent into a crank shape in a crank bending step. A winding intermediate portion locking step is performed by locking the winding intermediate portion (203), which is the portion of the winding between the winding base end and the winding end, with a bending post (80), A winding bending step in which, with the intermediate portion of the winding locked to the bending post, the shaping nozzle or the bending post is moved in an arbitrary direction relative to the stator, and the intermediate portion of the winding is bent to a predetermined angle, A winding shaping method that includes this. "Disclosure 7" The winding shaping method according to disclosure 6, wherein the nozzle hole is formed to allow insertion of the two winding ends.

[0086] Thus, this disclosure is not limited to the embodiments described above, and can be implemented in various forms without departing from its essence. [Explanation of symbols]

[0087] 1 Winding shaping device, 40 Shaping nozzle, 42 Nozzle hole, 60 Bending guide, 80 Bending post, 100 Stator, 110 Stator core, 200 Winding, 201 Winding end, 202 Winding base end, 203 Winding middle

Claims

1. A winding shaping apparatus for shaping windings (200) wound around each of the stator cores (110) of a stator (100) having a plurality of stator cores (110) arranged in a ring, A shaping nozzle (40) having a nozzle hole (42) into which a winding end (201), which is the end of the winding extending from the stator core, A bending guide (60) capable of engaging the winding base end (202), which is the base end of the winding extending from the stator core, The winding comprises a bending post (80) capable of engaging the winding intermediate portion (203), which is the portion of the winding between the winding base end and the winding end, The shaping nozzle is, With the winding end inserted into the nozzle hole and the winding base end locked to the bending guide, the winding is movable in any direction relative to the stator. With the intermediate portion of the winding locked to the bending post, it is movable in any direction relative to the stator. The nozzle hole is formed to allow the two winding ends to be inserted, The shaping nozzle is rotatable around the axis of the nozzle hole, The winding shaping apparatus has a nozzle hole having a restricting portion (421) that can restrict the change in the relative position of the two winding ends with respect to the shaping nozzle when the shaping nozzle rotates.

2. A winding shaping apparatus for shaping windings (200) wound around each of the stator cores (110) of a stator (100) having a plurality of stator cores (110) arranged in a ring, A shaping nozzle (40) having a nozzle hole (42) into which a winding end (201), which is the end of the winding extending from the stator core, A bending guide (60) capable of engaging the winding base end (202), which is the base end of the winding extending from the stator core, The winding comprises a bending post (80) capable of engaging the winding intermediate portion (203), which is the portion of the winding between the winding base end and the winding end, The shaping nozzle is, With the winding end inserted into the nozzle hole and the winding base end locked to the bending guide, the winding is movable in any direction relative to the stator. With the intermediate portion of the winding locked to the bending post, it is movable in any direction relative to the stator. The bending post is a winding shaping device having a post body (81), a post extension portion (82) formed to extend from the post body, and a winding holding portion (83) formed to extend from the post extension portion and capable of holding the intermediate portion of the winding between itself and the post body.

3. The winding shaping apparatus according to claim 2, wherein the nozzle hole is formed to allow insertion of the two winding ends.

4. The shaping nozzle is rotatable around the axis of the nozzle hole, The winding shaping apparatus according to claim 3, wherein the nozzle hole has a restricting portion (421) that can restrict the change in the relative position of the two winding ends with respect to the shaping nozzle when the shaping nozzle rotates.

5. The winding shaping apparatus according to claim 1, 3, or 4, further comprising an insertion guide (70) capable of holding the two winding ends close to each other and guiding the insertion of the two winding ends into the nozzle hole.

6. The winding shaping apparatus according to claim 1, wherein the bending post has a post body (81), a post extension portion (82) formed to extend from the post body, and a winding holding portion (83) formed to extend from the post extension portion and capable of holding the intermediate portion of the winding between itself and the post body.

7. A winding shaping method for shaping windings (200) wound around each of the stator cores (110) of a stator (100) having a plurality of stator cores (110) arranged in a ring, A winding end insertion step involves inserting the winding end (201), which is the end of the winding extending from the stator core, into the nozzle hole (42) of the shaping nozzle (40). A winding base end locking step is performed by locking the winding base end (202), which is the base end of the winding extending from the stator core, with a bending guide (60), With the winding end inserted into the nozzle hole and the winding base end locked to the bending guide, the shaping nozzle is moved in an arbitrary direction relative to the stator, and the winding base end and the winding specific portion (206), which is the portion of the winding on the winding end side that is located outside the nozzle hole and near the shaping nozzle, are bent into a crank shape in a crank bending step. A winding intermediate portion locking step is performed by locking the winding intermediate portion (203), which is the portion of the winding between the winding base end and the winding end, with a bending post (80), A winding bending step in which, with the intermediate portion of the winding locked to the bending post, the shaping nozzle or the bending post is moved in an arbitrary direction relative to the stator, and the intermediate portion of the winding is bent to a predetermined angle, Includes, The nozzle hole is formed to allow the two winding ends to be inserted, The shaping nozzle is rotatable around the axis of the nozzle hole, The winding shaping method has a nozzle hole having a restricting portion (421) that can restrict the change in the relative position of the two winding ends with respect to the shaping nozzle when the shaping nozzle rotates.

8. A winding shaping method for shaping windings (200) wound around each of the stator cores (110) of a stator (100) having a plurality of stator cores (110) arranged in a ring, A winding end insertion step involves inserting the winding end (201), which is the end of the winding extending from the stator core, into the nozzle hole (42) of the shaping nozzle (40). A winding base end locking step is performed by locking the winding base end (202), which is the base end of the winding extending from the stator core, with a bending guide (60), With the winding end inserted into the nozzle hole and the winding base end locked to the bending guide, the shaping nozzle is moved in an arbitrary direction relative to the stator, and the winding base end and the winding specific portion (206), which is the portion of the winding on the winding end side that is located outside the nozzle hole and near the shaping nozzle, are bent into a crank shape in a crank bending step. A winding intermediate portion locking step is performed by locking the winding intermediate portion (203), which is the portion of the winding between the winding base end and the winding end, with a bending post (80), A winding bending step in which, with the intermediate portion of the winding locked to the bending post, the shaping nozzle or the bending post is moved in an arbitrary direction relative to the stator, and the intermediate portion of the winding is bent to a predetermined angle, Includes, A winding shaping method comprising a bent post having a post body (81), a post extension portion (82) formed to extend from the post body, and a winding holding portion (83) formed to extend from the post extension portion and capable of holding the intermediate portion of the winding between itself and the post body.

9. The winding shaping method according to claim 8, wherein the nozzle hole is formed to allow insertion of the two winding ends.

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