JP2024056509A - Winding shaping device and winding shaping method - Google Patents

Abstract

[Problem] To provide a winding shaping device and a winding shaping method that are resistant to winding collapse and that make the height of the crossover wire uniform. [Solution] A winding shaping device 10 extends a crossover wire 5 that connects 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 after extending, regulates the crossover wire 5 to shape the crossover wire 5. A first shaft 53 rotates a first work holder 55 capable of holding the first stator core 21. A second shaft 54 parallel to the first shaft 53 rotates a second work holder 56 capable of holding the second stator core 22. When the first shaft 53 and the second shaft 54 are rotated in opposite directions, the first guide pin 61 and the second guide pin 62 contact the crossover wire 5, control the shape of the crossover wire 5, and shape the crossover wire without destroying the winding state of the first coil wire 41 and the second coil wire 42. [Selected Figure]

Description

The present invention relates to a winding shaping device and a winding shaping method for windings wound around a stator core.

2. Description of the Related Art Conventionally, as a stator provided in an inner rotor type rotating electric machine, a stator in which a plurality of stator cores are arranged in an annular shape is known.
For example, Patent Document 1 discloses a method for manufacturing a stator having a core in which a number of split cores having teeth are arranged in a ring shape so that the teeth are radial, and a number of coils wound around the teeth and connected by jumper 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 arranged adjacent to each other at positions spaced apart from each other, and the coil is wound in concentrated winding around the teeth of one of the split cores.The coil is then wound in concentrated winding around the teeth of the other split core while connecting the coil of one of the split cores with the jumper wire.

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 radially arranged to form the core.
In the process 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.

JP 2007-215272 A

The winding shaping method disclosed in Patent Document 1 is a method for shortening the length of the crossover wires, but does not prevent the windings from collapsing.

The 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 the crossover wires uniform.

The winding shaping device of the present invention is a winding shaping device that stretches the crossover wire (5) that connects the first coil wire (41) and the second coil wire (42) wound around the first stator core (21) and the second stator core (22) that are placed back to back, regulates the crossover wire after stretching, and shapes the crossover wire. The device is configured to include a first work holder (55) that can hold the first stator core, a first shaft (53) that can rotate the first work holder, a second work holder (56) that can hold the second stator core, a second shaft (54) that is provided parallel to the first shaft and can rotate the second work holder, and 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 destroying the winding state of the first coil wire and the second coil wire.

According to the winding shaping device of the present invention, when the first shaft and the second shaft having parallel central axes of rotation are rotated in opposite directions, the first work holder and the second work holder are rotated in opposite directions, the connecting wire connecting the coil wire to be wound around the first stator core and the second stator core is extended, and the extended connecting wire is regulated by the first and second guide pins to regulate the posture of the connecting wire.
Therefore, the crossover wires connecting the coil wires (windings) wound on the first stator core and the second stator core are shaped to make the winding less prone to collapse. This makes it possible to improve the winding space factor by expanding the winding space, even when trapezoidal winding is used.

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.

FIG. 1 is a partial perspective view showing a shaping device for a set of stator core pairs according to a first embodiment; FIG. 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; FIG. 1A is a perspective view showing an initial posture of a set of stator core pairs according to a first embodiment, and FIG. 1B is a plan view of the same; FIG. 1A is a perspective view showing a final posture of a set of stator core pairs according to a first embodiment, and FIG. 1B is a plan view of the same; FIG. 4 is a schematic plan view showing the transition of the position change of the stator core from the initial posture to the final posture of the stator core pair; FIG. 2A is a schematic plan view showing a transition of a position change of a crossover wire; FIG. 2B is a schematic front view showing a transition of a position change of a crossover wire; 1A is a schematic plan view showing a transition of a position change of a stator core, FIG. 1B is a schematic plan view showing a transition of a position change of a guide pin, and FIG. 1C is a schematic front view showing a transition of a position change of a crossover wire, FIG. 1 is a cross-sectional view showing the shaping device of the first embodiment, taken along a plane passing through both axes of a first shaft and a second shaft; 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; FIG. 2 is a perspective view showing the function of the crossover wires and guide pins of the stator core pair; 3 is a cross-sectional view showing a winding state of a stator core; 1 is a cross-sectional view showing a guide pin and a V-shaped guide according to a first embodiment; FIG. 11 is a plan view showing a shaping device according to a second embodiment; FIG. 2 is a perspective view showing a shaping device according to a second embodiment; FIG. 13 is a partial cross-sectional view showing a shaping device according to a third embodiment; FIG. 13 is a schematic development view of the stator in the circumferential direction after the stator core pair is assembled in the fourth embodiment.

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

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

As shown in Figures 3(A) and (B), one (1) stator core pair 1 has a first stator core 21 and a second stator core 22 corresponding to a pair (2) 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 cross wire 5 connecting the first coil wire 41 and the second coil wire 42.

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 to have a generally T-shaped cross section. The second insulator 32 is formed, for example, from a 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.

The connecting wire 5 is formed in a wire shape, for example, from a conductive material, and connects the end of the first coil wire 41 of the first stator core 21 to the beginning of the second coil wire 42 of the second stator core 22. Here, the first coil wire 41, the second coil wire 42, and the connecting wire 5 are integrally formed from a single material.

The stator core pair 1 shown in Figures 3(A) and (B) is maintained in this position and 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 faced back to back, maintains its non-linear shape without collapsing.

Next, a winding 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 are maintained in 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, 32 of both stator cores.

As shown in FIG. 1, a first work holder 55 is fixed to the upper end of a first shaft 53 having a first axis 51 as its axis of rotation. 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 the bottom surface 551 of the first work holder 55 at an eccentric position parallel to the first axis 51.

A V-shaped guide 63 is provided on the top of the first guide pin 61. As shown in FIG. 13, the V-shaped guide 63 has a ring-shaped recess 631 on its outer periphery into which the crossover wire fits. The V-shaped guide 63 is engaged by a fastener 69 at the tip of the guide pin 61. This regulates the position of the crossover wire 5 that fits into 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 at the same time as the stator core pair 1 rotates.

Similarly, a V-shaped guide 64 is provided on the upper part of 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 fits. The V-shaped guide 64 is engaged by a fastener 69 at the tip of the second guide pin 62. This regulates 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 at the same time as the stator core pair 1 rotates.

As shown in Figures 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.

As shown in Figures 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.

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

In the cam mechanism 80 having the cam plate 82, the rollers 83 and 84 can ride up on the cam surfaces 851 and 861 of the cams 85 and 86 fixed to the base 79. The rollers 83 and 48 are supported rotatably on the cam plate 82. The rollers 83 and 84 are urged by the urging means 77 so as to come into contact with the cam surfaces 851 and 861, and at the same time, as the second rack 68 moves in the direction of the arrow 71, it passes through the state shown in FIG. 1 and FIG. 2, transitioning in a direction separating the second shaft 54 from the first shaft 53, and then returning to a direction in which the second shaft 54 approaches the first shaft 53 again.

When the second rack 68 advances in the direction of the 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 that meshes 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 up onto the cam surface 861, the second shaft 54 returns to the original distance between it and the first shaft 53.

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

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

The initial position shown in Figure 9 (1) corresponds to the posture shown in Figures 3 (A) and (B), where the rotation angle of the initial position 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 Figure 8 are pushed in the direction of the arrow 71 shown in Figure 1, the first shaft 53 and the second shaft 54 rotate in the directions of the arrows 59 and 60, and the first work holder 55 and the second work holder 56 rotate in the directions of the arrows 23 and 24.

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

The position shown in Figure 9 (2) is a rotation angle of 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 distance between the first shaft 53 and the second shaft 54, and at the same time the first work holder 55 and the second work holder 56 rotate further in the directions of the arrows 23 and 24, extending the crossover wire 5.

9(3) is a position where the rotation angle is 90°. In 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 suppressing the height of the crossover wire 5.
As the work holders 55, 56 rotate, the first guide pin 61 comes into contact with the crossover wire 5, and as the crossover wire 5 extends, the first guide pin 61 comes into contact with the crossover wire 5 and begins guiding the crossover wire 5. Thereafter, the second guide pin 62 comes into contact with 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 that of the initial position.

When moving from FIG. 9 (3) to (4), the first guide pin 61 abuts the crossover wire 5 and continues to extend the crossover wire 5, reducing the distance between the first shaft 53 and the second shaft 54 and rotating the first stator core 21 and the second stator core 22.

The position shown in Fig. 9 (4) is a rotation angle of 127°. This position is obtained by moving the left core 4.4 mm to the right from the position shown in Fig. 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 rear side of each stator core, the crossover wire 5 is shaped, collapse of the winding is prevented, and the winding state is maintained.

When moving from FIG. 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 the winding from collapsing and shaping the crossover wire 5.

The final position shown in FIG. 9(5) corresponds to the attitude shown in FIGS. 4(A) and (B), and the first stator core 21 and the second stator core 22 indicate a rotation angle of 135° in the final position.
In a subsequent process in this state, the stator core pairs 1 maintaining 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.

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

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).

In Figure 7, (A) dashed lines indicate the initial positions of the stator cores 21 and 22 before shaping, and solid lines indicate the final positions of the stator cores 21 and 22 after shaping. (B) dashed lines indicate the initial positions of the first guide pin 61 and the second guide pin 62 before shaping, and solid lines indicate the positions of the first guide pin 61 and the second guide pin 62 after shaping. (C) dashed lines indicate the initial position of the crossover wire 5 before shaping, and solid lines indicate the final position of the crossover wire 5 after shaping.

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 collapse of the winding. It also eliminates unevenness in the jumper wire height, making the subsequent process of reducing the jumper wire height unnecessary. Furthermore, in the subsequent process, the stator core pairs are arranged in the circumferential direction, making it possible to manufacture an annular stator in a short time without collapse of the winding.

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

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

According to this embodiment, since the winding shape includes a process of shaping the cross wires using the above-mentioned shaping device 10, it is possible to eliminate snap fits 94 shown in FIG. 11(A) and expand the winding space into the dead space 93 of the rectangular winding, making it possible to form the trapezoidal winding shown in (B) which is less prone to collapse.
Therefore, a snap-fit-less winding or trapezoidal winding can be realized, and it is possible to improve the winding space factor while suppressing collapse of the winding.

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 distorted.
According to this embodiment, the automation of crossover wire shaping makes winding adjustment unnecessary, the crossover wire shaping process can be eliminated, and the stator manufacturing process can be simplified.

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 rotation positions #1, #2, #3, #4, #5, and #6 of the six work holders are the same or different positions, but these diagrams are imaginary. As an example of the embodiment, the rotation positions of the six stator core pairs are the same position with 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 a long 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 sets of stator cores can be uniformly shaped simultaneously. Therefore, in the assembly process, the level of the crossover wire height can be uniformed simultaneously for a plurality of stator core pairs. This eliminates the need for a crossover wire height correction process, and allows stators to be manufactured in a short time.

Third Embodiment
The third embodiment is shown in Fig. 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 level 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 upper parts of the first guide pin 61 and the second guide pin 62 can be varied.
This makes it possible to control the level height of the crossover wire even if the crossover wire drawn from the stator core becomes uneven vertically.

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 and lower by adding spacers. A total of six stator core pairs are assembled.

16 shows the order of the six stator core pairs 1 when the stator core is expanded in the circumferential direction and the shape or posture of each crossover wire 5. In 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 level in the height direction. In the second and subsequent stator core pairs (C2-C2, C3-C3, C4-C4, C5-C5, C6-C6) at the time of assembly, the crossover wires 5 are inclined, and there is a difference in height between the lead-out positions of the first stator core and the lead-out positions of 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, and improves the efficiency of assembly work during the manufacture of the stator when a plurality of stator core pairs are assembled into an annular shape.

Other embodiments
In the above embodiment, the first rack and the second rack are manually driven, but in another embodiment, the operation of the first rack and the second rack may be automated. The actuator for driving 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.

In the above embodiment, the shaft of the first axis only rotates, and the shaft of the second axis rotates with respect to the base and linearly reciprocates in a direction away from the shaft of the first axis. However, another embodiment of the present invention may have a mechanism in which both the first shaft and the second shaft are separated from each other with respect to the base.
Although the present invention has been described with respect to an embodiment in which the cam mechanism is a linear cam, the cam mechanism may be of another embodiment in which the second shaft is displaced in a direction away from the first shaft.

The present invention is not limited to the above-mentioned embodiment, and can be implemented in various forms without departing from the spirit of the invention.

The winding shaping method of the present invention is a winding shaping method for extending a crossover wire connecting coil wires wound around first and second stator cores that are back-to-back with each other, restricting the crossover wire after extension, and shaping the crossover wire, and includes the steps of rotating the first and second stator cores in opposite directions, rotating the first and second stator cores in opposite directions with 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 shape the crossover wire.

This extends the crossover wire connecting the windings wound on the first stator core and the second stator core, and the shape of the extended crossover wire is guided by the first guide pin and the second guide, attracting the start or end wire of the coil wire wound around the core, shaping the crossover wire, and 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 factor can be improved by expanding the winding space.

The winding shaping method of the present invention may include a step of contacting the first guide pin with the crossover wire and then contacting the second guide pin with the crossover wire to shape the crossover wire, instead of the step of contacting the first and second guide pins with the crossover wire. This allows 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 makes it possible to arrange a plurality of stator core pairs in an annular shape in a later step, simplifying the manufacturing process of the stator without collapsing the winding.

1 stator core pair,
5 crossings,
10 Shaping 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 first axis,
52 second 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 first pinion,
66 second pinion,
67 First rack,
68 Second rack,
77 biasing means,
80 Cam mechanism.

Claims (9)

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, regulates the crossover wire after the stretching, and shapes the crossover wire,
a first work holder (55) capable of holding the first stator core;
a first shaft (53) capable of rotating the first work holder;
a second work holder (56) capable of holding a second stator core;
a second shaft (54) arranged parallel to the first shaft and capable of rotating the second work holder;
a first guide pin (61) and a second guide pin (62) that come into contact with a crossover wire and shape the crossover wire without destroying the winding state of the first and second stator cores when the first shaft and the second shaft are rotated in opposite directions. 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). A winding shaping device 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 capable of reciprocating linear motion together. The winding shaping device according to claim 3, further comprising a cam mechanism (80) that changes the distance between the first shaft and the second shaft. The winding shaping device according to claim 3, comprising a first handle and a second handle (75, 76) provided on the first rack and the second rack, respectively. The winding 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. A winding shaping method for extending a crossover wire connecting coil wires wound around first and second stator cores arranged back-to-back to each other, and shaping the crossover wire by restricting the crossover wire after the extension, comprising the steps of:
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 reciprocating the two cores in a direction separating them from each other;
a step of contacting the first and second guide pins with the extended crossover wire to extend the crossover wire;
The winding shaping method includes a step of regulating the take-out position of the extended crossover wire and shaping the crossover wire. Among the steps according to claim 7, instead of the step of abutting the first guide pin and the second guide pin against 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. The winding shaping method according to claim 8, which includes a step of abutting the first guide pin and the second guide pin against the crossover wire, holding the trapezoidal winding of the coil wire, and preventing the winding from collapsing.

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