Winding shaping device and winding shaping method

Abstract

To provide a shaping device for winding which makes winding collapse hard to occur and makes a height of a crossover uniform, and a shaping method for winding.SOLUTION: A shaping device 10 for winding extends a crossover 5 mutually connecting a first coil wire 41 and a second coil wire 42 wound around a first stator core 21 and a second stator core 22 which are positioned back to back, regulates the crossover 5 after the extension and shapes the crossover 5. A first shaft 53 rotates a first work holder 55 capable of holding the first stator core 21. A second shaft 54 in parallel with the first shaft 53 rotates a second work holder 56 capable of holding the second stator core 22. When rotating the first shaft 53 and the second shaft 54 in opposite directions, a first guide pin 61 and a second guide pin 62 to be abutted to the crossover 5 are abutted to the crossover 5, a shape of the crossover 5 is controlled, and the crossover is shaped without collapse of winding states of the first coil wire 41 and the second coil wire 42.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an apparatus and method for shaping a winding wound around a stator core. [Background technology]

[0002] 2. Description of the Related Art Conventionally, a stator having a plurality of stator cores arranged in an annular shape has been known as a stator provided in an inner rotor type rotating electric machine. For example, Patent Document 1 discloses a method for manufacturing a stator having a core formed by arranging multiple split cores having teeth in a ring shape so that the teeth are radial, and multiple coils wound around the teeth and connected by crossover wires between coils of the same phase. In this stator winding process, when the split cores are arranged in a ring shape with the teeth radially inward, the split cores that are not adjacent to each other in the circumferential direction are placed adjacent to each other at positions spaced apart from each other, and the coil is wound around the teeth of one of the split cores in a concentrated winding manner, and then the coil is wound around the teeth of the other split core in a concentrated winding manner while connecting the coil of one of the split cores with the jumper wire.

[0003] In the assembly process after the winding process, the split cores around which the coils are wound are arranged in an annular shape so that the teeth are radial, thereby forming the core. In the step of shaping the crossover wire after assembly, the crossover wire is shaped so as to fit onto one end face in the axial direction of the core. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-215272 Summary of the Invention [Problem to be solved by the invention]

[0005] The winding shaping method disclosed in Patent Document 1 is a method for shortening the length of the crossover wires, but is not a method for preventing the winding from collapsing.

[0006] An object of the present invention is to provide a winding shaping device and a winding shaping method that are less likely to cause winding collapse and that make the height of crossover wires uniform. [Means for solving the problem]

[0007] The winding wire shaping device of the present invention is a winding wire shaping device that extends a crossover wire (5) connecting a first coil wire (41) and a second coil wire (42) wound around a first stator core (21) and a second stator core (22) that are arranged back to back, regulates the crossover wire after the extension, and shapes the crossover wire, a first shaft (53) and a second shaft (54) that are rotatable and extend in the vertical direction and are arranged parallel to each other; and a second shaft (54) that is fixed to the upper end of the first shaft. a first work holder (55) capable of holding the first stator core; The second shaft is fixed to an upper end thereof. a second work holder (56) capable of holding a second stator core; ,before The coil winding device employs a configuration including first and second guide pins (61, 62) that come into contact with the crossover wire when the first shaft and the second shaft are rotated in opposite directions, and shape the crossover wire without disrupting the winding state of the first coil wire and the second coil wire.

[0008] According to the winding shaping device of the present invention, when the first shaft and the second shaft, which have parallel rotational axes, are rotated in opposite directions, the first work holder and the second work holder are rotated in opposite directions, extending the crossover wire connecting the coil wire to be wound around the first stator core and the second stator core, and the extended crossover wire is regulated by the first and second guide pins, regulating the posture of the crossover wire. Therefore, the crossover wires connecting the coil wires (windings) wound on the first and second stator cores are shaped to make the winding less likely to collapse. This makes it less likely for the winding to collapse, and even when trapezoidal winding is used, the winding space can be expanded, improving the winding space factor.

[0009] In the crossover wire shaping process, the height level of the crossover wire is controlled within a predetermined range. This makes the crossover wire height uniform, eliminates the need for a crossover wire shaping process in the subsequent assembly process, simplifies the stator manufacturing process, and shortens the time required to manufacture the stator. According to the present invention, it is possible to provide a winding core assembly in which the coil wires wound around a pair of stator cores are connected by crossover wires, and which can be shaped in a short time so that the height of the windings passed over the stator cores is uniform and does not collapse. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a partial perspective view showing a shaping device for a pair of stator cores according to a first embodiment; [Figure 2] 1 is a partial perspective view showing a shaping device for a set of stator core pairs according to a first embodiment, in which a shaft rotation position is different; [Figure 3] FIG. 1A is a perspective view showing the initial posture of one stator core pair according to the first embodiment, and FIG. 1B is a plan view of the same; [Figure 4] 1A is a perspective view showing the final posture of one stator core pair according to the first embodiment, and FIG. 1B is a plan view of the same; [Figure 5] 1 is a schematic plan view showing the transition of the position change of the stator core pair from the initial posture to the final posture; [Figure 6] (A) is a schematic plan view showing the transition of the position change of the crossover line, (B) is a schematic front view showing the transition of the position change of the crossover line, [Figure 7] (A) is a schematic plan view showing the transition of the position change of the stator core, (B) is a schematic plan view showing the transition of the position change of the guide pin, and (C) is a schematic front view showing the transition of the position change of the crossover wire, [Figure 8] FIG. 1 is a cross-sectional view showing the shaping device of the first embodiment, taken along a plane passing through both axes of the first and second shafts; [Figure 9] FIG. 4 is a transition diagram showing the transition of the rotational position change of the first and second work holders in the first embodiment; [Figure 10] FIG. 10 is a perspective view showing the function of the crossover wires and guide pins of the stator core pair; [Figure 11] 3 is a cross-sectional view showing the winding state of the stator core; [Figure 12] 1 is a cross-sectional view showing a guide pin and a V-shaped guide according to a first embodiment; [Figure 13] 10 is a plan view showing a shaping device according to a second embodiment; [Figure 14] FIG. 10 is a perspective view showing a shaping device according to a second embodiment; [Figure 15] FIG. 10 is a partial cross-sectional view showing a third embodiment of a shaping device; [Figure 16] FIG. 11 is a schematic development view of the stator in the circumferential direction after the stator core pair is assembled in the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, a winding shaping device according to a number of embodiments will be described with reference to the drawings. Note that substantially the same components in the number of embodiments will be denoted by the same reference numerals, and the description thereof will be omitted. (First embodiment) A first embodiment of the present invention will be described with reference to FIGS.

[0012] The winding shaping device according to the first embodiment manufactures a pair of stator core pairs 1 in the posture shown in Figures 4(A)(B) from a pair of stator core pairs 1 in the posture shown in Figures 3(A)(B) for a wound stator pair corresponding to a workpiece.

[0013] As shown in Figures 3(A) and (B), one (one) stator core pair 1 has a first stator core 21 and a second stator core 22 corresponding to a pair (two) of stator cores, a first insulator 31 and a second insulator 32 corresponding to two insulators, a first coil wire 41 and a second coil wire 42 corresponding to two coil wires (windings), and one crossover wire 5 connecting the first coil wire 41 and the second coil wire 42.

[0014] The first stator core 21 is formed, for example, from laminated steel plates and has a generally T-shaped cross section. The first insulator 31 is formed, for example, from resin, and is provided so as to cover a portion of the first stator core 21. The first coil wire 41 is formed, for example, from a conductive material in a linear shape, and is provided in the first stator core 21 so as to be wound around the first insulator 31. The second stator core 22 is formed, for example, from laminated steel plates and has a generally T-shaped cross section. The second insulator 32 is formed, for example, from resin, and is provided so as to cover a portion of the second stator core 22. The second coil wire 42 is formed, for example, from a conductive material in a linear shape, and is provided in the second stator core 22 so as to be wound around the second insulator 32.

[0015] The crossover wire 5 is formed in a linear shape from, for example, a conductive material, and connects the winding end of the first coil wire 41 on the first stator core 21 to the winding start of the second coil wire 42 on the second stator core 22. Here, the first coil wire 41, the second coil wire 42, and the crossover wire 5 are integrally formed from a single material.

[0016] The stator core pair 1 shown in Figures 3(A) and (B) is maintained in this position when assembled to the shaping device 10 shown in Figure 1. Before assembly, in a pre-process leading to this position, a first coil wire 41 is wound around one of the stator core pair 1, for example, the first stator core 21, and then a second coil wire 42 is wound around the other, the second stator core 22. In the stator core pair 1 shown in Figures 3(A) and (B), the crossover wire 5 connecting the first coil wire 41 and the second coil wire 42 wound around the first stator core 21 and the second stator core 22, respectively, which are back-to-back, maintains its shape in a non-linear manner without collapsing.

[0017] Next, a wire shaping device according to a first embodiment of the present invention will be described with reference to FIG. The winding shaping device 10 rotates the first stator core 21 and the second stator core 22, which maintain the posture shown in Figures 3(A) and (B), and changes the shape of the crossover wire 5 connecting the first coil wire 41 and the second coil wire 42, which are wound around the insulators 31 and 32 of both stator cores.

[0018] 1, a first work holder 55 is fixed to the upper end of a first shaft 53 having a first axis 51 as its rotation axis. The first work holder 55 is capable of holding the first stator core 21 in the position shown in Fig. 3. A first guide pin 61 is provided on a bottom surface 551 of the first work holder 55 at an eccentric position parallel to the first axis 51.

[0019] A V-shaped guide 63 is provided above the first guide pin 61. As shown in FIG. 13 , the V-shaped guide 63 is annular and has a recess 631 on its outer periphery into which the crossover wire is fitted. The V-shaped guide 63 is locked by a fastener 69 at the tip of the guide pin 61. This restricts the position of the crossover wire 5 fitted in the recess 631 of the V-shaped guide 63 when the first shaft 53 rotates, making it difficult for the crossover wire 5 to come out of the recess 631 and shaping the crossover wire 5. This allows the position of the crossover wire 5 to be accurately controlled simultaneously with the rotation of the stator core pair 1.

[0020] Similarly, a V-shaped guide 64 is provided above the second guide pin 62. As shown in FIG. 13 , the V-shaped guide 64 is annular and has a recess 641 on its outer periphery into which the crossover wire is fitted. The V-shaped guide 64 is locked by a fastener 69 at the tip of the second guide pin 62. This restricts the position of the crossover wire 5 that fits into the recess 641 of the V-shaped guide 64 when the second shaft 54 ​​rotates, making it difficult for the crossover wire 5 to come out of the recess 641 and shaping the crossover wire 5. This allows the position of the crossover wire 5 to be accurately controlled simultaneously with the rotation of the stator core pair 1.

[0021] 1 and 8, a first pinion 65 is fixed to the lower part of the first shaft 53, and a first rack 67 meshes with this first pinion 65. A second pinion 66 is fixed to the lower part of the second shaft 54, which has a second axis parallel to the first axis 51, which is the rotation axis of the first shaft 53, and a second rack 68 meshes with this second pinion 66.

[0022] 1 and 8, a plate 81 is fixed to a first rack 67 that is movable relative to a base 79 of the shaping device 10, and a first handle 75 is provided on the plate 81. This allows the first rack 67 to be moved back and forth in the linear direction of the arrow 71 extending from the rack body by manually operating the first handle 75.

[0023] Similarly, a cam plate 82 is fixed to the second rack 68, which is movable relative to the base 79. A second handle 76 is provided on the cam plate 82. The base 79 is provided with a biasing means 77 that constantly biases the bearing 58 of the second shaft 54 ​​and the cam plate 82 in the direction of arrow 78 shown in FIG. 8. The second rack 68 is movable in the direction of arrow 71, which is indicated by the extension of the second rack 68, and in the direction of arrow 73, which is perpendicular to the second axis 52, shown in FIG. 1. The second shaft 54 ​​is movable back and forth in the direction of arrow 73, away from the first shaft 53.

[0024] In cam mechanism 80 having cam plate 82, rollers 83 and 84 can ride up on cam surfaces 851 and 861 of cams 85 and 86 fixed to base 79. Rollers 83 and 84 are rotatably supported on cam plate 82. As rollers 83 and 84 are urged by urging means 77 to come into contact with cam surfaces 851 and 861 and second rack 68 simultaneously moves in the direction of arrow 71, the state shown in FIG. 1 and FIG. 2 changes, moving in a direction separating second shaft 54 ​​from first shaft 53, and then returning to a direction in which second shaft 54 ​​approaches first shaft 53.

[0025] When the second rack 68 moves in the direction of arrow 71, the first roller 83 and the second roller 84 roll on the cam surface 851 of the cam 85 and the cam surface 861 of the cam 86, and the second shaft 54 ​​fixed to the pinion 66 meshing with the second rack 68 increases the distance between it and the first shaft 53 as it rotates, and then when the roller 84 rides over the cam surface 861, the second shaft 54 ​​returns the distance between it and the first shaft 53 to its original distance.

[0026] When the winding shaping device 10 moves the stator core pair 1 from the position shown in Fig. 3 to the position shown in Fig. 4, the first handle 75 and the second handle 76 are manually pushed in the direction of arrow 71. At this time, in Fig. 1, the first shaft 53 is rotated in the direction of arrow 59, and the second shaft 54 ​​is rotated in the direction of arrow 60.

[0027] Next, the operation of the shaping device 10 will be described. The transition of the positions of the work holder, guide pin, stator core, coil wire, and crossover wire over time when the shaping device 10 is in operation is shown in Figures 9(1)(2)(3)(4)(5).

[0028] 3(A) and (B), the rotation angle of the first stator core 21 and the second stator core 22 is 0°, and the first stator core 21 and the second stator core 22 are back-to-back. From this state, when the first handle 75 and the second handle 76 shown in Fig. 8 are pushed in the direction of arrow 71 shown in Fig. 1, the first shaft 53 and the second shaft 54 ​​rotate in the directions of arrows 59 and 60, and the first work holder 55 and the second work holder 56 rotate in the directions of arrows 23 and 24.

[0029] 9(1) to (2), the distance between the first shaft 53 and the second shaft 54 ​​is maintained constant. As the first work holder 55 and the second work holder 56 rotate, they rotate sequentially as shown in FIGS. 9(2), (3), (4), and (5), and accordingly the positions of the first guide pin 61, the second guide pin 62, the positions of the first stator core 21, the second stator core 22, and the shape of the crossover wire 5 change.

[0030] 9(2) is a position where the rotation angle is 45°. When moving from this position to position (3), the roller 83 rolls on the cam surface 851 of the cam mechanism 80, increasing the separation distance between the first shaft 53 and the second shaft 54. At the same time, the first work holder 55 and the second work holder 56 further rotate in the directions of the arrows 23 and 24, extending the crossover wire 5.

[0031] 9(3) is a position where the rotation angle is 90°. At this position, the second stator core 22 on the left side is pulled from the first stator core 21 on the right side by, for example, 5.2 mm, thereby reducing the height of the crossover wire 5. As the work holders 55, 56 rotate, the first guide pin 61 abuts against the crossover wire 5, and as the crossover wire 5 extends, the first guide pin 61 abuts against the crossover wire 5, thereby starting to guide the crossover wire 5. After that, the second guide pin 62 abuts against the crossover wire 5. The height of the crossover wire 5 is restricted from the level of the initial position, and the level of the final position is restricted more than the initial position.

[0032] When transitioning from Figure 9 (3) to (4), the crossover wire 5 continues to be extended as the first guide pin 61 abuts the crossover wire 5, the distance between the first shaft 53 and the second shaft 54 ​​is reduced, and the first stator core 21 and the second stator core 22 are rotated.

[0033] The position shown in Figure 9(4) is a rotation angle of 127°. This position moves the left core 4.4 mm to the right from the position shown in Figure 9(3). This prevents damage to the crossover wire 5. The take-out positions of both ends of the crossover wire 5 are held on the back side of each stator core, the crossover wire 5 is shaped, collapse of the winding is avoided, and the winding state is maintained.

[0034] When transitioning from Figure 9 (4) to (5), the first guide pin 61 starts to abut the crossover wire 5, and the second guide pin 62 also starts to abut the crossover wire 5. The first guide pin 61 and the second guide pin 62 continue to extend the crossover wire 5 so that the take-out position of the crossover wire 5 is maintained on the back side of each stator core, preventing collapse of the winding and shaping the crossover wire 5.

[0035] The final position shown in FIG. 9(5) corresponds to the posture shown in FIGS. 4(A) and 4(B), and the first stator core 21 and the second stator core 22 indicate a rotation angle of 135° in the final position. In the subsequent process in this state, the stator core pairs 1, which maintain the posture shown in Figures 4(A) and (B), are arranged in a ring shape from the first and second work holders 55, 56, to manufacture a stator (not shown) in which multiple stator core pairs 1 are arranged in the circumferential direction.

[0036] 5, the initial position of the stator core pair before shaping is indicated by a dashed line, and the initial position of the stator core pair after shaping is indicated by a solid line. During the crossover shaping process, the first stator core 21 and the second stator core 22 rotate by approximately 135° in opposite directions as indicated by arrows 23 and 24, respectively.

[0037] In Figure 6, the dashed lines show the plan view (A) and front view (B) of the shape of the crossover wire 5 before shaping (initial position), and the solid lines show the plan view (A) and front view (B) of the shape of the crossover wire 5 after shaping (final position).

[0038] 7, the dashed lines in (A) indicate the initial positions of the stator cores 21 and 22 before shaping, and the solid lines indicate the final positions of the stator cores 21 and 22 after shaping. The dashed lines in (B) indicate the initial positions of the first guide pins 61 and the second guide pins 62 before shaping, and the solid lines indicate the positions of the first guide pins 61 and the second guide pins 62 after shaping. The dashed lines in (C) indicate the initial position of the crossover wire 5 before shaping, and the solid lines indicate the final position of the crossover wire 5 after shaping.

[0039] According to this embodiment, as described above, the crossover wire is extended, and the take-out positions of the coil wire at both ends of the crossover wire are restricted and shaped. Therefore, the winding state of the coil wire wound around the core is maintained without collapse. This eliminates the need for rework due to collapsed windings. It also eliminates unevenness in the crossover wire height, eliminating the need for a subsequent process to reduce the crossover wire height. Furthermore, in a subsequent process, stator core pairs are arranged circumferentially, allowing an annular stator to be manufactured in a short time without collapsed windings.

[0040] According to this embodiment, the crossover wire is pulled after the rotation angle of the stator cores 21 and 22 exceeds 45°, so the winding end wire of the first stator core 21 and the winding start wire of the second stator core 22 are less likely to come off, making it less likely for the windings to collapse.

[0041] In Figure 9(4), the first guide pin 61 on the right side is installed closer to the outer diameter side of the core, so as illustrated in Figure 10, the first guide pin 61 guides (restricts) the crossover wire 5 in the direction of arrow 70 at the position of the solid line 61, not the broken line 61. This maintains the position of the winding start line of the first coil wire 41 on the right-side first stator core 21, making it less likely for the winding to collapse.

[0042] According to this embodiment, the winding shape includes a process of shaping the crossover wires using the shaping device 10 described above, which makes it possible to eliminate snap fits 94 shown in FIG. 11(A), expand the winding space into the dead space 93 of the rectangular winding, and enable trapezoidal winding as shown in (B), which is less likely to collapse. Therefore, snap-fitless or trapezoidal winding can be realized, and both an improvement in the winding space factor and suppression of winding collapse can be achieved.

[0043] According to this embodiment, the wire is shaped while tension is applied to the crossover wire, and it is possible to prevent the winding wound around the stator core from becoming unbalanced. According to this embodiment, the automation of crossover wire shaping eliminates the need for winding adjustment, eliminating the crossover wire shaping process and simplifying the stator manufacturing process.

[0044] (Second embodiment) The second embodiment is shown in Figures 13 and 14. The second embodiment is a shaping device that simultaneously shapes a plurality of stator core pairs, in this case six stator core pairs and crossover wires. 13 and 14 show diagrams in which the rotational positions #1, #2, #3, #4, #5, and #6 of the six work holders are mixed, with the same positions and different positions, but these are imaginary diagrams. In one example of the embodiment, the rotational positions of the six stator core pairs are the same position and in the same phase. A link 88 is connected to the end of the second rack 68 opposite to the end where the second handle 76 is provided, and a pin 90 is slidably guided in an elongated hole 89 of this link 88 . Components that are substantially the same as those in the first embodiment are given the same reference numerals, and descriptions thereof will be omitted. According to this embodiment, the windings of six stator cores can be uniformly shaped simultaneously. Therefore, in the assembly process, the crossover wire heights of multiple stator core pairs can be made uniform simultaneously, the crossover wire height correction process can be eliminated, and stators can be manufactured in a short time.

[0045] (Third embodiment) A third embodiment is shown in Figure 15. The third embodiment is an example in which a difference in height is provided at the pull-out position of the crossover wire. A spacer 91 is provided on the bottom surface of the second work holder 56, and the level of the V-shaped guide 64 of the second guide pin is set at a higher position than the level of the V-shaped guide 63 of the first guide pin 61. By using spacers of different thicknesses or changing the number of spacers, the level of the V-shaped guides fixed to the top of the first guide pin 61 and second guide pin 62 can be changed. This makes it possible to control the level height of the crossover wire even if the crossover wire drawn out from the stator core becomes uneven in the vertical direction.

[0046] (Fourth embodiment) 16 shows an exploded view of an embodiment in which, for example, six stator core pairs form an annular stator. In this embodiment, the position level of the V-shaped guides 63, 64 of one stator core pair is horizontal, and the position levels of the V-shaped guides 63, 64 of the other five stator core pairs are made higher or lower by adding spacers. A total of six stator core pairs are assembled.

[0047] Figure 16 shows the order of the six stator core pairs 1 when the stator core is deployed in the circumferential direction and the shape or posture of each crossover wire 5. For the first pre-assembled stator core pair (C1-C1), the crossover wire 5 lead-out positions of the first stator core 21 and the second stator core 22 are at the same height level. When assembled, the crossover wires 5 of the second and subsequent stator core pairs (C2-C2, C3-C3, C4-C4, C5-C5, C6-C6) are inclined, creating a difference in height between the lead-out positions of the first stator core and the second stator core. This improves the efficiency of assembly work during the manufacture of the stator by assembling the stator core pairs into an annular shape. When a plurality of stator core pairs are assembled into an annular shape, the efficiency of assembly work during the manufacture of the stator is improved.

[0048] (Other embodiments) In the above embodiment, the first rack and the second rack are driven manually, but in other embodiments, the operation of the first rack and the second rack may be automated. The actuator that drives the first rack and the second rack may be, for example, a cylinder and a piston rod, or another driving device. In the embodiment of the present invention, a plurality of pairs of stator cores are arranged in a row, but the number of pairs of stator cores is not limited in the present invention.

[0049] In the above embodiment, the first shaft only rotates, and the second shaft rotates relative to the base and linearly reciprocates in a direction away from the first shaft. However, another embodiment of the present invention may have a mechanism in which both the first shaft and the second shaft are spaced apart from each other relative to the base. Although the present invention has been described with respect to an embodiment in which the cam mechanism is configured as a linear cam, the cam mechanism may be configured in other embodiments in which the second shaft is displaced in a direction separating the second shaft from the first shaft.

[0050] As described above, the present invention is not limited to the above-described embodiment, and can be embodied in various forms without departing from the spirit and scope of the present invention.

[0051] The winding shaping method of the present invention is a winding shaping method for extending a crossover wire connecting coil wires to be wound around first and second stator cores that are placed back to back, restricting the crossover wire after extension, and shaping the crossover wire, and includes the steps of rotating the first and second stator cores in directions opposite to each other, rotating the first and second stator cores in directions opposite to each other and simultaneously performing a reciprocating linear motion in a direction separating the two cores, abutting first and second guide pins against the extended crossover wire to extend the crossover wire, and restricting the take-out position of the extended crossover wire to shaping the crossover wire.

[0052] This extends the crossover wire connecting the windings wound on the first and second stator cores, and the shape of the extended crossover wire is guided by the first guide pin and the second guide, guiding the winding start or end wire of the coil wire wound around the core and shaping the crossover wire, making the winding less likely to collapse. This makes it less likely for the winding to collapse, and even when trapezoidal winding is used, the winding space can be expanded, thereby improving the winding space factor.

[0053] The winding shaping method of the present invention may include, instead of the step of abutting the first and second guide pins against the crossover wire, a step of abutting the first guide pin against the crossover wire and then abutting the second guide pin against the crossover wire to shape the crossover wire, thereby enabling precise control of the shape of the crossover wire. The winding shaping method of the present invention may include a step of abutting the first and second guide pins against the crossover wires to hold the trapezoidal winding of the coil wire and prevent collapse of the winding. This allows multiple stator core pairs to be arranged in an annular shape in a subsequent step, simplifying the stator manufacturing process without collapse of the winding. [Explanation of symbols]

[0054] 1 stator core pair, 5 Crossroads, 10 Orthopedic device, 21 first stator core, 22 second stator core, 31 First insulator, 32 Second insulator, 41 first coil wire (winding), 42 second coil wire (winding), 51 1st axis, 52 2nd axis, 53 First shaft, 54 second shaft, 55 first work holder, 56 second work holder, 61 First guide pin, 62 Second guide pin, 63 First V-shaped guide, 64 Second V-shaped guide, 65 1st pinion, 66 second pinion, 67 1st rack, 68 2nd rack, 77 biasing means; 80 Cam mechanism.

Claims

1. A winding wire shaping device that stretches a crossover wire (5) connecting a first coil wire (41) and a second coil wire (42) wound around a first stator core (21) and a second stator core (22) that are placed back to back, and regulates the crossover wire after stretching, thereby shaping the crossover wire, a first shaft (53) and a second shaft (54) extending vertically, rotatable, and arranged parallel to each other; a first work holder (55) fixed to an upper end of the first shaft and capable of holding the first stator core; a second work holder (56) fixed to the upper end of the second shaft and capable of holding the second stator core; and first and second guide pins (61, 62) that come into contact with the crossover wires when the first shaft and the second shaft are rotated in opposite directions, and that shape the crossover wires without disrupting the winding state of the first and second stator cores.

2. 2. The winding shaping device according to claim 1, wherein the first work holder has the first guide pin (61) and the second work holder has the second guide pin (62).

3. 2. The winding shaping device according to claim 1, further comprising: first and second pinions (65, 66) that rotate the first shaft and the second shaft in opposite directions; and first and second racks (67, 68) that mesh with the first pinion and the second pinion, respectively, and are both capable of reciprocating linear motion.

4. 4. The winding shaping device according to claim 3, further comprising a cam mechanism (80) for varying the distance between the first shaft and the second shaft.

5. 4. The winding shaping device according to claim 3, further comprising a first handle and a second handle (75, 76) provided on the first rack and the second rack, respectively.

6. 6. The wire shaping device according to claim 5, further comprising an actuator for changing the positions of the first rack and the second rack, instead of the first handle and the second handle.

7. A winding shaping method for extending a crossover wire connecting coil wires wound around first and second stator cores that are arranged back-to-back, and shaping the crossover wire by restricting the crossover wire after the extension, comprising: a first shaft and a second shaft are provided, the first shaft and the second shaft are rotatable and extend in a vertical direction, and are arranged parallel to each other; a first work holder and a second work holder are fixed to upper ends of the first shaft and the second shaft, respectively, to hold the first and second stator cores; rotating the first and second stator cores in opposite directions; a step of rotating the first and second stator cores in mutually opposite directions and simultaneously linearly moving the two cores in a direction separating them from each other; a step of bringing first and second guide pins into contact with the extended crossover wire to extend the crossover wire; A winding shaping method including a step of regulating the take-out position of an extended crossover wire and shaping the crossover wire.

8. In the process according to claim 7, instead of the process of bringing the first guide pin and the second guide pin into contact with the crossover wire, 8. The winding shaping method according to claim 7, further comprising the step of abutting the first guide pin against a crossover wire, and then abutting the second guide pin against the crossover wire, thereby shaping the crossover wire.

9. 9. The winding shaping method according to claim 8, further comprising the step of abutting the first guide pin and the second guide pin against a crossover wire to hold the trapezoidal winding of the coil wire and prevent collapse of the winding.

Images