TW201834363A - Coil deforming device, stator production apparatus, and stator production method - Google Patents

Abstract

This coil deforming device is provided with: a pair of receiving/delivering jigs (32, 32) each having a slit (32a, 32b) into which a side portion (13a, 14a) of a coil (12) can be inserted; rotation mechanisms (33, 33) that rotate the pair of receiving/delivering jigs (32, 32) between parallel positions where the side portions (13a, 14a) can be inserted and slope positions with which the depth directions of the slits (13a, 14a) intersect; and a separation/connection mechanism (34) which separates the pair of receiving/delivering jigs (32, 32) from each other or brings the pair of receiving/delivering jigs (32, 32) closer to each other.

Description

 Coil deformation device, stator manufacturing device and stator manufacturing method  

The present invention relates to a coil deforming device suitable for manufacture of a stator in a rotating electrical machine such as a three-phase alternator, a stator manufacturing device using the same, and a method of manufacturing the stator.

Conventionally, a stator of a rotating electrical machine includes a cylindrical stator core having a plurality of teeth (magnetic poles) radially arranged and protruding in an inner diameter direction, and a plurality of grooves opened at intervals therebetween; and a stator coil The core is assembled by accommodating the side portion in the groove. Regarding the assembly of the stator coil, a method of preliminarily making a stator coil independently of the stator core and inserting a side portion of the stator coil into each groove of the stator core is known.

As a manufacturing method of a stator, the one disclosed by JP2007-166850A or JP2011-229285A is mentioned, for example. In the method for manufacturing a stator disclosed in the above documents, a cylindrical insertion jig having a groove group corresponding to a groove of a stator core is formed on the outer circumference, and one of a plurality of coils which have been wound in advance is used. The side portions are respectively inserted into the holding groove group, and the respective coils are arranged along the circumference of the insertion jig. Further, the insertion jig is inserted into the inner circumference of the stator core, and is positioned so that the groove of the plate-like pusher becomes narrower toward the front end after the groove is integrated with the groove corresponding to the stator core. The front end is inserted into each of the corresponding retaining grooves. One of the coils inserted into the holding groove is pushed out toward the outer diameter side to be inserted into the corresponding groove of the stator core.

Here, the stator coil which is prepared in advance independently of the stator core can be obtained by winding the wire on the winding core. The coil used in the above method has a rail shape, and has a pair of side portions that are inserted into the holding grooves in parallel with each other, and a coil end portion that connects both end portions of the pair of side portions in an arc shape.

In other words, the stator coil which is prepared in advance is a cylindrical coil which is so-called neatly wound and which is elongated in the laminating direction, and which is stacked in a track-like winding line to form a new rail shape in the axial direction. In the manner of winding the wire, the wire is spirally wound to the core without a gap.

The group of holding grooves formed around the cylindrical insertion jig are formed corresponding to the grooves of the stator core. Therefore, the group of the holding grooves is formed in a radial shape from the periphery toward the center, and the holding grooves adjacent in the circumferential direction are not parallel to each other.

On the other hand, the rail-shaped winding wires are stacked to form the respective side portions of the cylindrical coil having a long axial direction. Since the wires are laminated in the direction of the reel, they are parallel to each other in the direction of the reel.

Therefore, in the above-described conventional manufacturing method, the wires are laminated in the direction of the reel, and in order to insert the side portions formed in parallel with each other in the lamination direction into the radial holding grooves, the sides which are formed in parallel with each other are not formed. After being deformed to be inserted into the retaining groove, it cannot be inserted into the retaining groove. At the time of this deformation, if the wires of the respective side portions lose the uniformity, there is a problem that it is difficult to insert the respective side portions into the holding grooves.

Further, if the wire of each side portion of the coil loses the uniformity, it is difficult to increase the lamination factor of the winding. Therefore, there is a problem in that it is impossible to increase the efficiency or size of the generator or the motor.

It is an object of the present invention to provide a coil deforming device which can be deformed without losing the uniformity of the wires of the respective sides of the wound coils.

Another object of the present invention is to provide a stator manufacturing apparatus and a method of manufacturing a stator which can be deformed to be inserted into a groove without losing the alignment of the wires of the respective sides of the coil.

According to an aspect of the present invention, a coil deforming device includes: a pair of transfer jigs each having a slit in which a pair of parallel sides of the stator coil are insertable; and a rotating mechanism which is mutually in the depth direction of the slit Parallel parallel positions, inclined positions that intersect the depth direction of the slits, or any one or both of the pair of transfer jigs; and a separation/proximity mechanism that separates the pair of transfer jigs from each other or near.

According to still another aspect of the present invention, a stator manufacturing apparatus includes: the coil deforming device; a support member that supports a stator core; and a winding machine that winds a wire to form a stator coil having a groove inserted into a stator core One of a pair of sides parallel to each other; a moving mechanism that moves the coil deforming device between a pair of side portions entering the slit, and a position where the pair of transfer jigs enter the stator core; and a side insertion mechanism Inserting the side portion of the slit into the slit from the slit and inserting it into the groove facing the slit, the rotating mechanism of the coil deforming device is configured such that the angle between the slits is at an inclined position The angles of the grooves into which the pair of side portions are inserted are the same, and the separation/adjacent mechanism of the coil deforming device is configured such that the interval between the openings of the slits coincides with the interval between the grooves into which the pair of side portions are inserted, and the moving mechanism is configured to At the insertion position, the opening of the slit faces the opening of the groove into which the pair of side portions are inserted.

Moreover, according to another aspect of the present invention, a method of manufacturing a stator includes a coil manufacturing step of winding a wire to form a stator coil having one side opposite to each other, and a step of transferring a pair of transfer jigs The slits respectively formed are parallel to each other, and the pair of side portions are respectively inserted into the slits in parallel with each other; the coil deforming step is to rotate one or both of the pair of transfer jigs to make the slit Together with the edge portion, the angle of the groove of the stator core into which the edge portion is inserted is uniform; the jig separation/proximity step is such that the interval between the opening portions of the slit is the same as the interval between the grooves into which the pair of side portions are inserted; Inserting step of causing a pair of transfer jigs to enter the stator core such that the opening of the slit faces the opening of the groove; and a side insertion step of inserting into the side of the stator coil of the slit It is pushed out from the slit and inserted into the corresponding groove of the stator core.

2, 11‧‧‧ stator core

2a, 11b‧‧‧ trench

3‧‧‧ insertion clamp

3a‧‧‧Keep the groove

4‧‧‧ coil

4a, 4b, 13a, 14a‧‧‧ side

4c, 4d, 13b, 14b‧‧‧ coil end

5, 62‧‧‧ pusher

8‧‧‧Wire

9‧‧‧STAR manufacturing equipment

9a‧‧‧ platform

9b‧‧‧ long hole

10‧‧‧ Stator

11a‧‧‧ teeth

12‧‧‧statar coil

13‧‧‧ inner coil

14‧‧‧Outer coil

15‧‧‧Support

16‧‧‧Horizontal substrate

17‧‧‧ Roller

18, 56, 66‧‧ ‧ motor

18a, 32c, 33a‧‧‧ rotating shaft

18b‧‧‧Leather

19‧‧‧Fixed parts

19a‧‧‧ Abutment

19b, 73‧‧‧ actuator

19c‧‧‧ Telescopic rod

20‧‧‧winding machine

21‧‧‧Rotating mechanism

22, 23‧‧‧ coiled column

24‧‧‧Inner core

24a‧‧‧Insert spool

25‧‧‧ outer core

25a‧‧‧Rolling spool

26‧‧‧Wire release member

27, 40‧‧‧ mobile agencies

31‧‧‧Coil deformation device

32‧‧‧Transfer fixture

32a‧‧ ‧ slit

32b‧‧‧outer slit

32d‧‧‧L type bracket

32e‧‧‧ incision

33‧‧‧Electric motor

34‧‧‧Separation/close proximity

34a, 43a, 44a‧‧‧ servo motor

34b, 43b, 44b, 54, 65‧‧‧ ball screw

34c, 42c‧‧‧ Followers

34d, 42d‧‧‧ housing

35, 44c‧‧‧ movable platform

41‧‧‧Axis moving mechanism

42‧‧‧X-axis direction telescopic actuator

43‧‧‧Z-axis direction telescopic actuator

43c‧‧‧ lifting platform

43d‧‧‧ rod

43e‧‧‧Female thread plate

44‧‧‧Y-axis direction telescopic actuator

44d, 52‧‧‧ rails

51‧‧‧Iron heart moving mechanism

53‧‧‧Mobile

55‧‧‧Female thread body

61‧‧‧Blind insertion mechanism

63‧‧‧Drive moving mechanism

64‧‧‧ movable body

70‧‧‧Protection agencies

71‧‧‧Axis components

72‧‧‧hook components

72a‧‧‧Installation Department

72b‧‧‧ Coverage

74‧‧‧Installation board

C1, C2‧‧‧ midline

D1, d2, D1, D2, t1, t3‧‧‧ interval

F‧‧‧depth

L1, L2, S1‧‧‧ length

S2‧‧‧Width

T‧‧‧ thickness

T2‧‧‧established interval

Α1, α2‧‧‧ angle

Fig. 1 is a plan view showing a stator manufacturing apparatus according to an embodiment of the present invention.

Figure 2 is a cross-sectional view taken along line B-B of Figure 1.

Figure 3 is an arrow C diagram of Figure 1.

Fig. 4 is a view showing a winding machine according to an embodiment of the present invention, and is a cross-sectional view taken along line A-A of Fig. 1.

Fig. 5 is a perspective view showing a state in which a wire is wound around a winding core of a winding machine according to an embodiment of the present invention, and an inner coil is formed.

Fig. 6 is a view showing a state in which a wire is wound around an outer core and an outer coil is produced, and is a perspective view corresponding to Fig. 5;

Fig. 7 is a view showing a state in which a side portion of a coil is inserted into a slit of a delivery jig, and is a perspective view corresponding to Fig. 6.

Fig. 8 is a view showing a state in which the transfer jig is rotated and moved to deform the coil, and is a perspective view corresponding to Fig. 7.

Fig. 9 is a view showing a state in which the transfer jig is inserted into the stator core together with the deformed coil, and corresponds to Fig. 1.

Figure 10 is a cross-sectional view taken along line D-D of Figure 9.

Fig. 11 is a view showing a state in which the opening of the slit faces the opening of the groove, and is a cross-sectional view corresponding to Fig. 10 .

Figure 12 is a cross-sectional view taken along line E-E of Figure 11.

Fig. 13 is a view showing a state in which the pusher is inserted into the slit, and is a cross-sectional view corresponding to Fig. 12.

Figure 14 is a cross-sectional view taken along line F-F of Figure 13.

Fig. 15 is a view showing a core in which a side portion of a stator coil having an inner coil and an outer coil is inserted into a plurality of grooves as viewed from the inside.

Fig. 16 is a partially enlarged plan view showing a stator in which a stator coil having an inner coil and an outer coil is inserted into a groove.

Fig. 17 is a plan view showing a stator in which a plurality of stator coils are mounted on a stator core.

Fig. 18 is an exploded perspective view showing a conventional method of inserting the side portions of the stator coil into the respective grooves of the core.

Next, an embodiment of the present invention will be described based on the drawings.

Fig. 1 is a view showing the stator manufacturing apparatus 9 in the present embodiment. Here, as shown in FIG. 1, three axes of X, Y, and Z orthogonal to each other are set. The X-axis extends in the horizontal horizontal direction, the Y-axis extends in the horizontal front-rear direction, and the Z-axis extends in the vertical (vertical) direction. The stator manufacturing apparatus 9 of this embodiment will be described based on such three axes.

The stator manufacturing device 9 is used to manufacture a stator for use in a generator or a motor. As shown in FIGS. 16 and 17, the stator 10 includes a cylindrical stator core 11 having a plurality of teeth 11a (magnetic poles) radially arranged and protruding in the inner diameter direction, and a plurality of grooves opened therebetween. 11b; and a stator coil 12 that is assembled to the stator core 11.

As shown in FIG. 1, the stator manufacturing apparatus 9 for manufacturing such a stator 10 is provided with a support member 15 for supporting the stator core 11. The support member 15 supports the cylindrical stator core 11 with its central axis O horizontal (see FIG. 10, and the central axis is the X-axis direction in FIG. 1), and its central axis is set as the center of rotation. Rotatable support.

As shown in FIGS. 1 and 10 to 14 , the support member 15 includes a horizontal substrate 16 and a plurality of pairs of rollers 17 which are respectively disposed on the horizontal substrate 16 at a predetermined interval from the circumferential direction of the stator core 11 and the axial direction. The stator core 11 is placed; the motor 18 (see FIGS. 10 to 14) rotates any of the plurality of rollers 17 to rotate the stator core 11 placed thereon; and the fixing member 19 (refer to FIG. 12) And FIG. 13), the stator core 11 is clamped on both sides in the axial direction to prohibit the rotation of the stator core 11.

As shown in FIGS. 10 to 14, the motor 18 is attached to the horizontal substrate 16, and the rotating shaft 18a is coupled to any of the rollers 17 by a belt 18b. When the motor 18 is driven and the roller 17 is rotated, the stator core 11 mounted thereon is rotated.

As shown in FIGS. 12 and 13, the fixing member 19 includes a contact piece 19a which is provided on the horizontal substrate 16 and abuts against one end surface of the stator core 11 in the axial direction, and an actuator 19b which faces The other end surface of the stator core 11 in the axial direction is provided on the horizontal substrate 16. The telescopic rod 19c of the actuator 19b protrudes, and the telescopic rod 19c sandwiches the stator core 11 on both sides in the axial direction together with the abutting piece 19a, thereby prohibiting the rotation of the stator core 11.

As shown in Fig. 1, the stator manufacturing apparatus 9 includes a winding machine 20 that winds a wire 8 to form a stator coil 12 (Figs. 15 to 17). The winding machine 20 of the present embodiment is suitable for manufacturing the stator coil 12 which is effective in the case where two parallel side portions 13a and 14a are respectively inserted into the stator core 11 as shown in Fig. 15 Groove 11b.

The stator coil 12 is formed by forming one winding layer, but the side portions 13a and 14a are inserted into the adjacent two grooves 11b. That is, the winding machine 20 is configured to be a stator coil 12 which is formed by a cylindrical inner coil 13 (Fig. 5) which is long in the axial direction, and is surrounded by a predetermined interval t2 (Fig. 6) from the outside. The coil 14 is formed by a coil 14 (Fig. 6).

The wire 8 is a covered wire and is a so-called round wire having a circular cross section. Furthermore, the wire 8 may also be a so-called square wire having a square cross section. In addition, the winding machine 20 is described as a single wire 8 to be wound, but a plurality of wires 8 may be wound in a state of being aligned.

As shown in FIG. 4, the winding machine 20 has an inner winding core 24 which is rotated by a rotating mechanism 21 for obtaining a track-like inner coil 13 (Fig. 5) by the wound wire 8; The core 25, which may surround the inner core 24, rotates together with the inner core 24 for obtaining a track-like outer coil 14 by the wound wire 8 (Fig. 6).

The inner winding core 24 has an inner bobbin 24a which is attached to the outer side of the radius of rotation of one of the pair of coiled columns 22, 23 by the rotation mechanism 21, respectively. The rotating mechanism 21 is configured such that a pair of coiled columns 22 can be formed around the vertical axis C of one of the coiled columns 22 and 23 extending in the vertical direction in a state parallel to each other as shown in FIG. 23 rotates in a state parallel to each other. The inner bobbin 24a of the coiled wire 8 is mounted on the outer side of one of the coiled columns 22 and the other of the coiled columns 23, respectively, on the outer side of the radius of rotation.

As shown in Fig. 5, the outer surface of the inner bobbin 24a of the coiled wire 8 is formed to bulge outwardly of the radius of rotation so that the coiled wire 8 is gently folded to form a substantially arc shape. Therefore, when one of the coiled columns 22 and the other coiled column 23 are rotated together with the inner winding core 24 to wind the wire 8 around the inner winding core 24, it is wound around one of the coiled columns 22 and the other of the coiled columns 23 The wire 8 bent in an arc shape by winding the bobbin 24a forms the coil end portion 13b. Further, the wire 8 hooked between one of the coiled columns 22 and the other of the coiled columns 23 forms a side portion 13a. In this way, the inner coil 13 in the shape of a rail is formed.

On the other hand, the core 25 for obtaining the outer coil 14 (Fig. 6) has an outer bobbin 25a which is configured to cover the inner bobbin 24a at a predetermined interval t2. As shown in Fig. 4, in the present embodiment, the outer core 25 is movably provided on the pair of coiled columns 22, 23. As shown in Fig. 6, the outer bobbin 25a is in the lowered state, and covers the winding position of the inner bobbin 24a in the inner core 24 on the outer side of the self-rotation radius. As shown in FIGS. 4 and 5, the outer bobbin 25a is in a raised position, and is in a standby position in which the outer radius of the inner bobbin 24a is opened outside. The outer bobbin 25a is configured to reciprocate between a winding position and a standby position.

As shown in FIGS. 5 and 6, the outer bobbin 25a is formed to be curved so that the inner surface thereof covers the wire 8 wound around the inner bobbin 24a. Further, the outer surface of the wire 8 of the outer bobbin 25a is formed so as to bulge outwardly from the outer side of the radius of rotation so that the coiled wire 8 is gently folded to form a substantially arc shape.

Therefore, as shown in Fig. 6, when the wire 8 is wound around the outer bobbin 25a at the winding position, the wire 8 which is wound around the outer bobbin 25a and bent into an arc shape forms the stitch end portion 14b. Further, the wire 8 hooked between one of the coiled columns 22 and the other of the coiled columns 23 forms a side portion 14a. In this way, the coil 14 is formed in a track shape.

In this way, the winding machine 20 is configured to be a stator coil 12 which is formed by a cylindrical inner coil 13 having a rail shape in plan view, and a coil 14 which surrounds the inner coil 13 with a predetermined interval t2 from the outside.

Here, the predetermined interval t2 is set as shown in FIG. 10, in which one of the side portions 13a of the inner coil 13 and one of the side portions 14a of the outer coil 14 are inserted, and the groove 11b adjacent to the stator core 11 is The interval t1 in the circumferential direction is the same.

Further, the symbol 26 shown in Fig. 4 is a wire discharging member 26 for discharging the inserted wire 8. The symbol 27 shown in Fig. 4 is a moving mechanism 27 for moving the wire discharging member 26 in the three-axis direction, which is provided on the stage 9a of the stator manufacturing device 9.

As shown in FIG. 1, the stator manufacturing apparatus 9 is provided with a coil deforming device 31 that deforms the stator coil 12 produced by the winding machine 20.

As shown in FIGS. 1 to 3, the coil deforming device 31 includes a pair of transfer jigs 32 and 32, which are respectively formed with slits 32a and 32b, and a rotating mechanism 33 which makes a pair of transfer jigs 32 and 32 One or both are rotated about a rotation axis 32c parallel to the longitudinal direction of the slits 32a, 32b; and the separation/proximity mechanism 34 separates and/or approaches the pair of delivery jigs 32, 32 from each other. In FIG. 3, the longitudinal direction of the slits 32a and 32b corresponds to the X-axis direction, and the width direction of the slits 32a and 32b which will be described later corresponds to the Y-axis direction, and the depth direction of the slits 32a and 32b corresponds to the Z-axis direction. .

As shown in FIG. 3 and FIG. 6, in the embodiment in which the winding coil unit 20 is formed with the stator coil 12 including the inner coil 13 and the outer coil 14, the inner coil 13 is formed on each of the pair of transfer jigs 32 and 32. The inner slits 13a into which the side portions 13a and 13a are inserted and the side portions 14a and 14a of the outer coil 14 are inserted into the outer slits 32b.

The slits 32a and 32b formed in the pair of transfer jigs 32 and 32 are formed such that the width and depth of the pair of side portions 13a and 14a which are parallel to each other of the stator coil 12 produced by the winding machine 20 can be respectively inserted.

Specifically, as shown in FIG. 6, the delivery jig 32 is a square plate. The delivery jig 32 has a length L2 that can enter a space L1 between the inner bobbin 24a and the outer bobbin 25a and the other inner bobbin 24a and the outer bobbin 25a. Further, the delivery jig 32 has a thickness T that exceeds a predetermined interval t2 between the side portions 13a and 14a of the stator coils 13 and 14. Moreover, the delivery jig 32 has a width S2 that exceeds the axial length S1 of each of the coils 13 and 14. Further, the interval t3 between the inner slit 32a and the outer slit 32b coincides with a predetermined interval t2 between the side portion 13a of the inner coil 13 and the side portion 14a of the outer coil 14. The inner slit 32a and the outer slit 32b are arranged in the width direction from one side in the width direction toward the other side, and are formed in parallel with each other. The depth F of the inner slit 32a and the outer slit 32b is formed to exceed the axial length S1 of each of the coils 13 and 14.

As shown in FIGS. 1 to 3, the rotation mechanism in the coil deforming device 31 is a pair of electric motors 33 and 33. On the outer side of the pair of transfer jigs 32 and 32, a rotation shaft 32c parallel to the longitudinal direction of the slits 32a and 32b is provided through the L-shaped bracket 32d. The rotating shaft 32c is provided coaxially with each of the rotating shafts 33a of the pair of electric motors 33 and 33, respectively. The pair of electric motors 33 are provided corresponding to the pair of delivery jigs 32 and 32, and are configured to rotate both of the pair of delivery jigs 32 and 32 around the rotation shaft 32c.

The separation/adjacent mechanism is such that one of the rotating mechanisms separates the electric motors 33, 33 from each other and/or approaches a pair of actuators 34, 34. Each of the actuators 34 and 34 includes a ball screw 34b that is driven to rotate by the servo motor 34a, and a follower 34c that is screwed to the ball screw 34b and moves in parallel.

The pair of actuators 34 and 34 are arranged and arranged on the movable table 35 such that the casings 34d thereof are continuous in the Y-axis direction. The electric motor 33 is provided in the follower 34c so that the rotation axis 33a of the electric motor 33 becomes parallel to the X-axis direction. The pair of actuators 34 and 34 are configured to separate/close one of the pair of electric motors 33 and 33 so that one of the rotating shafts 33a is separated from and close to the delivery jigs 32 and 32.

The stator manufacturing device 9 includes a moving mechanism 40 that moves the coil deforming device 31 between the transfer position and the insertion position. Here, the term "handover position" means that one of the pair of side portions 13a, 14a of the stator coil 12 obtained by the winding machine 20 enters one of the pair of coil deforming means 31 in the pair of the transfer jigs 32, 32 as shown in FIG. The position within the slits 32a, 32b. The insertion position means a position at which the pair of delivery jigs 32 and 32 enter the stator core 11 as shown in FIGS. 9 and 10 .

As shown in FIG. 1, the moving mechanism 40 includes a 3-axis moving mechanism 41 that moves the coil deforming device 31 in the three-axis direction, and a core moving mechanism 51 that causes the support member 15 supporting the stator core 11 to be together with the stator core 11. Move along its axis.

As shown in FIGS. 1 to 3, the three-axis moving mechanism 41 includes an X-axis direction expansion and contraction actuator 42 that moves the movable table 35 in the X-axis direction, and a Z-axis direction expansion and contraction actuator 43 that makes the X-axis direction. The telescopic actuator 42 moves in the Z-axis direction together with the coil deforming device 31, and the Y-axis direction telescopic actuator 44 moves the Z-axis direction telescopic actuator 43 in the Y-axis direction.

The Y-axis direction expansion and contraction actuator 44 includes a pair of guide rails 44d that are provided on the platform 9a so as to extend in the Y-axis direction, a movable table 44c that is movably mounted on the guide rail 44d, and a ball screw 44b that is screwed to the movable portion The stage 44c is provided along the guide rail 44d, and a servo motor 44a that rotates the ball screw 44b.

The Z-axis direction expansion/contraction actuator 43 includes a plurality of rods 43d that are inserted into the movable table 44c so as to be movable up and down, and extend in the Z-axis direction, and the lifting table 43c is mounted on the upper end of the rod 43d; the female screw plate 43e The ball screw 43b is screwed to the female screw plate 43e and disposed in parallel with the rod 43d. The servo motor 43a is provided on the movable table 33c to rotate the ball screw 43b.

Reference numeral 9b is a long hole 9b which is formed on the stage 9a so as to extend in the Y-axis direction, and the rod 43d is inserted to allow the rod 43d to move in the Y-axis direction.

The X-axis direction expansion and contraction actuator 42 has the same structure as the actuator 34 in the separation/proximity mechanism for moving the electric motor 33 as a rotation mechanism. The X-axis direction expansion and contraction actuator 42 moves the follower 42c in the X-axis direction, and the casing 42d extends in the X-axis direction and is attached to the lift table 43c of the Z-axis direction expansion and contraction actuator 43.

The 3-axis moving mechanism 41 moves the coil deforming device 31, so that one of the pair of side portions 13a, 14a of the stator coil 12 obtained by the winding machine 20 enters one of the coil deforming devices 31 to the transfer jig 32 as shown in FIG. , 32 in the slits 32a, 32b. In this manner, the three-axis moving mechanism 41 is configured to guide the coil deforming device 31 to the delivery position.

As shown in FIGS. 1 and 10 to 14, the core moving mechanism 51 includes a guide rail 52 which is provided on the platform 9a extending in the axial direction (X-axis direction) of the stator core 11 so as to be along the longitudinal direction thereof (X-axis direction). The horizontal substrate 16 is movably mounted; the moving body 53 is disposed on the horizontal substrate 16 and moves along the guide rail 52; the ball screw 54 is disposed in parallel with the guide rail 52; and the female screw body 55 is disposed on the horizontal substrate 16, and Screwed to the ball screw 54; and a motor 56 that rotates the ball screw 54 to move the horizontal substrate 16 along the guide rail 52 together with the stator core 11.

The core moving mechanism 51 is configured to move the stator core 11 to the pair of transfer jigs 32 and 32 into the stator core in cooperation with the three-axis moving mechanism 41 that moves the coil deforming device 31, as shown in FIGS. 9 and 10 11 insertion position.

The coil deforming device 31 is provided with a preventing mechanism 70 that prevents the side portions 13a and 14a accommodated in the slits 32a and 32b from being separated from the slits 32a and 32b.

As shown in FIG. 2, the prevention mechanism 70 includes a shaft member 71 which is provided on the outer surface of the pair of delivery jigs 32 in parallel with the rotation shaft 32c of the pair of delivery jigs 32, and a plurality of hook members 72 (only the figure is shown) In the case of three sides on one side, it is provided on the shaft member 71; and an actuator 73 that rotates the shaft member 71 together with the plurality of hook members 72.

The actuator 73 is a motor and is attached to a mounting plate 74 which is provided on a rotating shaft 33a of the electric motor 33 which is a rotating mechanism. On the delivery jig 32 provided with the hook member 72, a slit 32e which is formed on the entrance side of the slits 32a, 32b is formed.

As shown in Fig. 6, the hook member 72 is an L-shaped flat plate. A mounting portion 72a and a covering portion 72b are formed on the hook member 72. The mounting portion 72a is attached to the shaft member 71.

As shown in FIGS. 7 and 10, the covering portion 72b enters the slit 32e by the rotation of the shaft member 71, and crosses the inlet side of the slits 32a and 32b. Thereby, the covering portion 72b prevents the side portions 13a and 14a accommodated in the slits 32a and 32b from coming out from the slits 32a and 32b.

The rotation mechanism 33 and the separation/proximity mechanism 34 in the coil deforming device 31 rotate one of the slits 32a and 32b so that one of the side portions 13a and 14a can be rotated and separated/closed to the delivery jigs 32 and 32. Thereby, the pair of delivery jigs 32 and 32 can be inclined positions in which the depth directions of the slits 32a and 32b intersect as shown in FIG. In this manner, the coil deforming device 31 is configured to deform the stator coil 12 having the side portions 13a and 14a.

When the stator coil 12 is deformed, the rotation mechanisms 33, 33 (FIG. 1) of the coil deforming device 31 are configured such that the slits 32a, 32b in the transfer jig 32 located at the inclined position after the rotation are formed as shown in FIG. The angle α1 coincides with the angle α2 of the groove 11b into which the pair of side portions 13a and 14a are inserted. The separation/proximity mechanism 34 (FIG. 1) of the coil deforming device 31 is configured such that the intervals d1 and d2 between the openings of the slits 32a and 32b in the pair of transfer jigs 32 are inserted into the pair of side portions 13a and 14a. The intervals D1 and D2 between the grooves 11b coincide.

In the present embodiment, as described above, the winding machine 20 produces the stator coil 12 composed of the inner coil 13 and the outer coil 14. The angle α1 of the slits 32a and 32b refers to an inclination angle of the slits 32a and 32b with respect to a line (reference line B) extending in the Z-axis direction (vertical direction) of each of the pair of transfer jigs 32. In the present embodiment, as shown in FIG. 10, the angle between the reference line B and the line (middle line C1) extending in the depth direction through the center of the slits 32a and 32b in the width direction is shown as the angle α. Further, the angle α2 of the groove 11b into which the edge portions 13a and 14a are inserted refers to the center line between the reference line B and the two grooves 11b adjacent to the stator core 11 inserted through the edge portions 13a and 14a. The angle between (middle line C2). More specifically, the intermediate line C2 of the groove 11b passes through the center (width center) of the circumferential width of the tooth 11a between the adjacent two grooves 11b into which the side portions 13a and 14a of the stator coil 12 are inserted, and A line connecting the central axes O of the stator cores 11 to each other.

Further, in the present embodiment, the interval d1 between the openings of the slits 32a serves as the width center of the opening of the slit 32a in one of the transfer jigs 32, and the opening of the slit 32a in the other transfer jig 32. The horizontal direction between the width centers is shown. Similarly, the interval d2 between the openings of the slits 32b refers to the horizontal interval between the centers of the widths of the openings of the slits 32b in the pair of transfer jigs 32. Further, the interval D1 between the grooves 11b is shown as an interval between the two grooves 11b into which the side portions 13a are inserted, along the horizontal direction of the width center in the circumferential direction of the opening. Similarly, the interval D2 between the grooves 11b is shown as an interval between the two grooves 11b into which the side portions 14a are inserted, along the horizontal direction of the width center in the circumferential direction of the opening. In the present embodiment, as described above, the angle α1 of the slit 32a, the interval d1, d2, the angle α2 of the groove 11b, and the intervals D1 and D2 are described. However, the technical scope of the present invention is not limited to this. Wait.

The moving mechanism 40 that moves the coil deforming device 31 is configured such that the pair of transfer jigs 32 and 32 are further moved to enter the insertion position of the stator core 11, and as shown in FIG. 11, the openings of the slits 32a and 32b are provided. The opening portions of the grooves 11b into which the pair of side portions 13a and 14a are inserted face each other.

Further, as shown in FIGS. 1 and 13, the stator manufacturing apparatus 9 includes a side insertion mechanism 61 that narrows the side portions 13a and 14a of the stator coil 12 inserted into the slits 32a and 32b. The slits 32a, 32b are pushed out to be inserted into the grooves 11b of the stator core 11 opposed to the slits 32a, 32b.

The side insertion mechanism 61 is provided with a plate-shaped pusher 62 which is disposed corresponding to the slits 32a and 32b of the transfer jig at the insertion position, and the width becomes narrower toward the front end; and the pusher moving mechanism 63, The pusher 62 is inserted into the corresponding slits 32a, 32b from the front end, and the side portions 13a, 14a of the stator coil 12 inserted into the slits 32a, 32b are pushed out from the slits 32a, 32b to They are respectively inserted into the corresponding grooves 11b.

Specifically, the pusher moving mechanism 63 includes a movable body 64 that is movably mounted on the guide rail 52 of the core moving mechanism 51, and a ball screw 65 that is screwed to the movable body 64 and that is disposed in parallel with the guide rail 52; And a motor 66 that rotates the ball screw 65 to move the movable body 64.

As shown in FIG. 13, the base end of the pusher 62 is provided on the movable body 64. The pusher moving mechanism 63 is configured such that the movable member 64 is brought close to the horizontal substrate 16, so that the pusher 62 can be inserted from the narrow front end into the narrowing of the transfer jigs 32, 32 inserted into the stator core 11 of the horizontal substrate 16. Within the slits 32a, 32b.

The pusher 62 is formed to be narrower in width toward the front end, so that as shown in Fig. 14, when inserted into the slits 32a, 32b, the side portions 13a, 14a of the stator coil 12 are pushed out from the slits 32a, 32b. . In this manner, the pusher 62 is configured to insert the side portions 13a, 14a into the grooves 11b of the stator core 11 opposite to the slits 32a, 32b.

Next, a method of manufacturing the stator of the present embodiment will be described.

The method for manufacturing a stator according to the present embodiment includes a coil manufacturing step of winding a wire 8 to form a stator coil 12 having a pair of side portions 13a and 14a parallel to each other, and a step of transferring a pair of transfer jigs 32, The slits 32a, 32b respectively formed on 32 are parallel to each other, and the pair of side portions 13a, 14a are respectively inserted into the slits 32a, 32b in a state of being parallel to each other; the coil deforming step is to make a pair of transfer jigs 32, 32 Either or both of them are rotated about a rotation axis parallel to the longitudinal direction of the slits 32a, 32b so that the slits 32a, 32b are aligned with the side portions 13a, 14a for the insertion of the side portions 13a, 14a a groove 11b of the stator core 11; a jig separation/proximity step for making the interval between the openings of the slits 32a, 32b coincide with the interval at which the grooves for inserting the pair of side portions 13a, 14a are inserted; the jig insertion step, The pair of transfer jigs 32, 32 are inserted into the stator core 11 such that the openings of the slits 32a, 32b face the opening of the groove 11b; and the edge insertion step is inserted into the slit 32a, The side portions 13a, 14a of the stator coil 12 of 32b are from the slits 32a, 32b To launch, and inserted within a corresponding groove of the iron core 11 of the stator 11b.

In the method of manufacturing the stator of the present embodiment, the stator manufacturing apparatus 9 is used, and the operation of the stator manufacturing apparatus 9 is automatically controlled by a controller (not shown).

The steps are described in detail below.

<Coil fabrication step>

In the coil forming step, the wire 8 is wound to form the stator coil 12 having the pair of side portions 13a, 14a parallel to each other.

In the present embodiment, the winding machine 20 is formed by the inner coil 13 and the stator coil 12 including the coil 14 other than the inner coil 13 from the outside as shown in Fig. 6 . Therefore, the coil manufacturing step has an in-volume step of fabricating the inner coil 13 and a winding step of fabricating the outer coil 14, to fabricate the stator coil 12 composed of the inner coil 13 and the outer coil 14.

Specifically, in the involution step, as shown in FIG. 5, the inner winding core 24 is rotated by the rotating mechanism 21 (FIG. 4) to wind the wire 8 discharged from the wire discharging member 26 to the inner winding core 24 The inner coil 13 is formed around it. Together with the rotation of the inner winding core 24, the wire discharging member 26 is moved in the direction of the rotation axis of the inner winding core 24 so that the wire 8 discharged from the wire discharging member 26 is spirally wound and wound neatly to the inner winding core 24.

In the inner winding step, the inner coil 13 is formed in a track shape, and the inner coil 13 has a coil end portion 13b composed of a wire 8 wound around the inner bobbin 24a, and a side portion 13a. It consists of a wire 8 that is suspended between a pair of coiled columns 22, 23.

Next, the inner coil 13 and the inner winding core 24 are surrounded by the outer winding core 25. In the present embodiment, the winding machine 20 configured to movably move the outer core 25 is used. Therefore, in the present embodiment, the outer winding core 25 is moved downward from the standby position shown in Fig. 4, and as shown in Fig. 6, it is moved to the surrounding position surrounding the inner coil 13. Thus, the coil end portion 13b of the inner coil 13 is covered by the outer bobbin 25a, and then the outer winding step is performed.

In the outer winding step, the outer winding core 25 is rotated together with the inner winding core 24 to wind the wire 8 discharged from the wire discharging member 26 around the outer winding core 25 to form the outer coil 14. The three-axis moving mechanism 27 The wire releasing member 26 is moved in the direction of the rotation axis of the outer winding core 25 together with the rotation of the outer winding core 25, and the wire 8 discharged from the wire discharging member 26 is spirally wound and wound to the outer winding core 24 in a neat manner.

Thus, as shown in Fig. 6, in the outer winding step, a track-shaped outer coil 14 having a coil tail end portion 14b composed of a wire 8 wound around the outer winding bobbin 25a is formed. And the side portion 14a, which is composed of a wire 8 that is hung between the pair of coiled columns 22, 23.

Here, the outer bobbin 25a in the outer core 25 is configured to cover the coil end portion 13b of the inner coil 13 from the outside, and thus the outer coil 14 is formed by the wire 8 wound around the outer bobbin 25a. The size of the inner coil 13 is enclosed. The interval t2 in the side portions 13a, 14a of the inner coil 13 and the outer coil 14 is the interval t1 between the circumferential direction of the adjacent groove 11b of the stator core 11 to which the equilateral portions 13a, 14a are to be inserted later (Fig. 10) Consistent.

<Handover Step>

In this step, the slits 32a and 32b formed in the pair of transfer jigs 32 and 32, respectively, are parallel, and the pair of side portions 13a and 14a are inserted into the slits 32a and 32b in parallel with each other.

In the present embodiment, in the rotation mechanism 33 of the coil deforming device 31, as shown in FIG. 6, the pair of transfer jigs 32, 32 are parallel to each other, and the pair of transfer jigs 32 are separated by the separation/proximity mechanism 34, The interval between 32 is the same as the interval between the side portions 13a, 14a in the stator coil 12.

Subsequently, the coil deforming means 31 is moved by the three-axis moving mechanism 41 of the moving mechanism 40, so that the pair of side portions 13a, 14a are inserted into the pair of transfer jigs 32, 32, respectively, in parallel with each other as shown in FIG. The slits 32a, 32b are formed in the upper portions.

In the present embodiment, the stator coil 12 composed of the inner coil 13 and the outer coil 14 is obtained in the winding step. Therefore, in the transfer step, the inner slits 32a into which the inner portions 13a of the inner coils 13 are respectively inserted, and the side portions 14a from which the outer coils 14 are inserted are inserted into the outer slits 32b, 32. The side portion 13a of the inner coil 13 and the side portion 14a of the outer coil 14 are inserted into the inner slit 32a and the outer slit 32b in a state of being parallel to each other.

Further, the coil deforming device 31 includes a preventing mechanism 70 that prevents the side portions 13a and 14a accommodated in the slits 32a and 32b from being separated from the slits 32a and 32b. Therefore, after the pair of side portions 13a, 14a are inserted into the slits 32a, 32b of the pair of the transfer jigs 32, 32, respectively, in parallel with each other, the shaft 73 of the mechanism 70 (Fig. 2) is prevented. The member 71 rotates together with the hook member 72, so that the covering portion 72b of the hook member 72 enters the slit 32e as shown in FIG. Thereby, the covering portion 72b crosses the entrance side of the slits 32a, 32b (Fig. 10).

As described above, the covering portions 72b prevent the side portions 13a and 14a accommodated in the slits 32a and 32b from coming out of the slits 32a and 32b.

In this state, the three-axis moving mechanism 41 in the moving mechanism 40 further moves the coil deforming device 31 together with the stator coil 12 into which the side portions 13a and 14a are inserted, so that the stator coil 12 is self-winding core 24 and outer core 25 Get rid of.

Hereinafter, the flow of separating the inner coil 13 and the outer coil 14 from the inner core 24 and the outer core 25 will be specifically described. First, a pair of side portions 13a, 14a are inserted into the slits 32a, 32b to maintain the shape. Next, it is prohibited to discharge the new wire 8 from the wire discharging member 26, and the wire 8 extending from the wire discharging member 26 to the outer coil 14 is cut by a cutting device or the like (not shown). Thereby, the stator coil 12 is made independent from the wire discharging member 26. Then, the inner coil 13 and the outer coil 14 which are maintained in shape are moved downward together with the pair of transfer jigs 32, 32 to be drawn downward from the open lower end faces of the pair of coiled columns 22, 23.

Then, by the moving mechanism 40, as shown in FIG. 1, the coil deforming device 31 and the stator coil 12 are separated from the winding machine 20.

<Coil deformation step>

In this step, either or both of the pair of delivery jigs 32 and 32 are rotated about the rotation axis 32c parallel to the longitudinal direction of the slits 32a and 32b. Further, the slits 32a and 32b are aligned with the side portions 13a and 14a inserted therein, and coincide with the angle α2 of the groove 11b of the stator core 11 into which the side portions 13a and 14a are inserted.

In the present embodiment, one of the rotation means of the coil deforming means 31 is driven to the electric motors 33, 33, respectively, so that as shown in Fig. 8, both of the pair of transfer jigs 32, 32 are formed with the slits 32a, 32b. The axis of rotation parallel to the length direction is centered and rotates as indicated by the solid arrow. Thereby, the pair of delivery jigs 32 and 32 are changed together with the side portions 13a and 14a inserted into the slits 32a and 32b to the intersection positions where the slits 32a and 32b intersect in the depth direction.

Thus, as shown in Fig. 10, the angle α1 of the slits 32a and 32b coincides with the edge portions 13a and 14a, and coincides with the angle α2 of the groove 11b of the stator core 11 to be inserted. In this manner, the lamination direction of the side portions 13a and 14a inserted into the slits 32a and 32b coincides with the inclination direction of the groove 11b corresponding to the angle α2 of the groove 11b.

<Jig separation/proximity step>

In this step, as shown in FIG. 10, the intervals d1 and d2 between the openings of the slits 32a and 32b of the pair of transfer jigs 32 and 32 and the pair of sides inserted into the slits 32a and 32b are formed. The intervals D1 and D2 of the grooves 11b to be inserted 13a, 14a are the same.

In the present embodiment, the L-shaped brackets 32d of the pair of delivery jigs 32 and 32 are provided in the depth direction of the slits 32a and 32b. Therefore, by the separation/adjacent mechanism 34 of the coil deforming device 31, the distance between one of the pair of the transfer jigs 32, 32 is set to be close to the electric motor 33, so that the pair of transfer jigs 32 are as shown by the dotted arrows in FIG. 32 are close to each other. Thus, as shown in Fig. 10, the intervals d1 and d2 between the openings of the slits 32a and 32b are changed to the grooves 11b to be inserted into the pair of side portions 13a and 14a inserted into the slits 32a and 32b. The intervals D1 and D2 are the same.

Furthermore, the jig separation/proximity step is preferably performed simultaneously with the coil deformation step.

By the coil deformation step and the jig separation/adjacent step, the stator coil 12 has different sides (13-shaped in the figure) in the winding direction as shown in Fig. 10 . However, since the respective side portions 13a and 14a of the coil 12 are inserted into the slits 32a and 32b, respectively, as shown in Fig. 8, the coil end portions 13b and 14b are mainly deformed. Therefore, by using the coil deforming device 31, when the stator coil 12 is deformed, the alignment of the wires 8 of the respective side portions 13a, 14a can be prevented from being impaired.

<Jig insertion step>

In this step, the pair of delivery jigs 32 and 32 are placed in the stator core 11, and as shown in Fig. 11, the openings of the slits 32a and 32b are opposed to the opening of the groove 11b.

Specifically, the jig insertion step is performed by the moving mechanism 40 in the stator manufacturing device 9. The three-axis moving mechanism 41 and the core moving mechanism 51 move either or both of the coil deforming device 31 and the stator core 11 to form a pair of transfer jigs 32 and 32 as shown in FIGS. 9 and 10 . The stator core 11 mounted on the horizontal substrate 16 is entered.

When the pair of transfer jigs 32 and 32 enter the insertion position in the stator core 11, the three-axis moving mechanism 41 further moves the coil deforming device 31, thereby opening the openings of the slits 32a and 32b as shown in FIG. The opening portions of the grooves 11b to be inserted into the side portions 13a and 14a are opposed to each other.

Subsequently, the actuator 73 in the prevention mechanism 70 is driven to rotate the shaft member 71. Thereby, the covering portion 72b in the hook member 72 is detached from the slit 32e to open the inlet side of the slits 32a, 32b.

<Edge insertion step>

In this step, the side portions 13a, 14a of the stator coil 12 inserted into the slits 32a, 32b are pushed out from the slits 32a, 32b to be inserted into the corresponding grooves 11b of the stator core 11.

The edge insertion step is performed by the edge insertion mechanism 61. Specifically, as shown in FIG. 12, by pushing the movable body 64 close to the horizontal substrate 16, the pusher 62 is inserted from the front end into the slit 32a of the transfer jig 32 inserted in the stator core 11 mounted on the horizontal substrate 16. Within 32b. In this manner, the plate-shaped pusher 62 which is disposed corresponding to the slits 32a and 32b of the delivery jig 32 at the insertion position and which has a narrower width toward the distal end is inserted into the corresponding slits 32a and 32b from the distal end. Further, as shown in Fig. 13, the side portions 13a, 14a of the stator coil 11 inserted into the slits 32a, 32b are pushed out from the slits 32a, 32b, and inserted into the corresponding grooves 11b.

Here, in order to facilitate the understanding of the present embodiment, a comparative example of the present invention will be described with reference to FIG.

In the manufacturing method of the stator of the comparative example, as shown in FIG. 18, a cylindrical insertion jig 3 in which a group of holding grooves 3a corresponding to the grooves 2a of the stator core 2 are formed on the outer circumference is used. Specifically, in the comparative example, one of the plurality of coils 4 wound in advance, the pair of side portions 4a and 4b, is inserted into the group of the holding grooves 3a, and the coils 4 are arranged along the circumference of the insertion jig 3. Then, the insertion jig 3 is inserted into the inner circumference of the stator core 2, and positioning is performed so that the holding groove 3a is integrated with the corresponding groove 2a of the stator core 2. Subsequently, the plate-shaped pusher 5 whose width becomes narrower toward the front end is inserted from the front end into the corresponding holding grooves 3a, and is inserted into one of the side portions 4a of the respective coils 4 in the holding groove 3a, 4b is pushed out to the outer diameter side to be inserted into the corresponding groove 2a of the stator core 2.

Here, the stator coil 4 which is prepared in advance independently of the stator core 2 can be obtained by winding a wire around a winding core. The stator coil 4 of the comparative example has a rail shape and has: one pair of side portions 4a, 4b parallel to each other, which are inserted into the holding groove 3a, and the coil tail end portions 4c, 4d, which are a pair of sides The ends of 4a and 4b are connected in an arc shape.

In other words, the stator coil 4 which is prepared in advance is a cylindrical coil which is so-called neatly wound and which is elongated in the laminating direction, and which is stacked in a track-like winding line and stacked in the axial direction. In the form of a track-like winding, the wire is spirally wound to the core without a gap.

As shown in Fig. 18, the group of the holding grooves 3a formed around the cylindrical insertion jig 3 is formed so as to be formed in a radial shape from the periphery toward the center of the groove 2a corresponding to the stator core 2. That is, the holding grooves 3a adjacent in the circumferential direction are not parallel to each other.

On the other hand, each of the side portions 4a and 4b of the coil 4 having a tubular shape in which the rail-shaped winding wires are stacked to form a long axial direction is laminated in the direction of the reel. Thereby, each of the side portions 4a, 4b is parallel to each other in the direction of the reel.

As described above, in the manufacturing method of the stator of the comparative example, the wires are laminated in the direction of the reel, and the side portions 4a, 4b formed in parallel with each other in the lamination direction are inserted into the radially holding grooves 3a. Therefore, if the side portions 4a, 4b formed in parallel with each other are deformed so as to be insertable into the holding groove 3a, they cannot be inserted into the holding groove 3a. At the time of deformation, if the wires of the respective side portions 4a, 4b lose their uniformity, it will be difficult to insert into the holding groove 3a.

When the wire of each of the side portions 4a and 4b in the coil 4 loses the uniformity, it is difficult to increase the layering factor of the winding wire, and it is not possible to increase the efficiency or size of the generator or the motor.

Further, as shown in FIG. 16, in order to increase the layering factor of the winding, the side portions 13a, 14a of the stator coil 12 forming one winding layer are respectively inserted into the plurality of grooves 11b (in the figure The case of two grooves 11b).

That is, it is conceivable that when the side portions 13a and 14a of both sides of the stator coil 12 are housed in the plurality of grooves 11b, the stator coil 12 can be obtained as in the above embodiment, and the stator coil 12 is The side portions 13a on both sides are accommodated in the inner coil 13 in the groove 11b spaced apart from each other, and the side portion 14a is accommodated in the groove 11b adjacent to the outer side of the groove 11b in which the inner coil 13 is accommodated. Composition.

However, in the manufacturing method of the stator of the comparative example, since the side portions 13a and 14a of the stator coil 12 composed of the inner coil 13 and the outer coil 14 are parallel to each other, it is difficult to ensure the sides of the inner coil 13 and the outer coil 14 while ensuring The portions 13a and 14a are parallel to each other, and the side portions 13a and 14a on both sides are deformed so as to be insertable into the respective grooves 11b which are radially formed. Further, it is more difficult to ensure the uniformity while inserting the side portions 13a and 14a into the groove 11b.

On the other hand, in the present embodiment, as shown in Fig. 14, the wires 8 inserted into the slits 32a, 32b are pushed out from the slits 32a, 32b and inserted into the side portions 13a, 14a in the corresponding grooves 11b. The state is moved while being inserted directly into the groove 11b. Therefore, as long as the wire 8 in the side portions 13a, 14a is wound neatly, it can be inserted into the corresponding groove 11b in a state in which the wire 8 is wound neatly. Therefore, the side portions 13a, 14a composed of the aligned wires 8 can be directly inserted into the grooves 11b of the stator core 11 (Figs. 16 and 17).

In the winding machine 20, the stator coil 12 composed of the inner coil 13 and the outer coil 14 can be obtained. Therefore, the coil 12 can be directly delivered in this state as long as it is wound up neatly. Therefore, the side portions 13a, 14a in the neat state can be directly inserted into the grooves 11b of the stator core 11.

Therefore, the layering factor of the wire 8 in the groove 11b can be increased, and the efficiency or miniaturization of the generator or the motor using the stator 10 can be achieved.

Moreover, as shown in FIG. 15, the gaps D1 and D2 of the inner coil 13 and the side portions 13a and 14a of the outer coil 14 are different. Therefore, even if the side portions 13a, 14a are inserted into the respective grooves 11b, the coil end portion 13b of the inner coil 13 does not protrude beyond the end portion 14b of the outer coil 14 and protrudes from the end surface of the core 11. Therefore, it is also possible to avoid a situation in which the formation of the coil end portions 13b, 14b becomes difficult if the coil tail end portion 13b of the inner coil 13 overlaps with the coil tail end portion 14b of the outer coil 14.

Furthermore, the stator 10 is manufactured by incorporating a plurality of stator coils 12 into a single stator core 11. Therefore, it is preferable to repeat the above steps by rotating the stator core 11 to change the core rotation step of the groove 11b in which the openings of the slits 32a and 32b are opposed. That is, as described above, it is preferable to perform the core rotation step after performing the coil forming step, the transfer step, the coil deforming step, the jig separation/proximity step, the jig insertion step, and the side insertion step, and repeating from the coil making step again. Each step.

The rotation of the stator core 11 can be performed by rotating the roller 17 in the holder 15 by the motor 18 in a state where the stator 19 is released from the stator 19.

As described above, by repeating the above-described steps after changing the grooves 11b opposed to the openings of the slits 32a and 32b, a plurality of stator coils 12 can be incorporated in the single stator core 11 as shown in FIG. Further, by performing the coil forming step from the coil deforming step to the side inserting step, the time for manufacturing the stator 10 can be shortened and the productivity can be improved.

Further, in the above embodiment, the movement mechanism 40 includes the three-axis moving mechanism 41 and the core moving mechanism 51. On the other hand, if the pair of delivery jigs 32 and 32 can be moved between the delivery position and the insertion position, the movement mechanism 40 is not limited to these, and for example, the core movement mechanism 51 may not be provided.

Further, in the above-described embodiment, the side insertion mechanism 61 for inserting the side portions 13a and 14a of the stator coil 12 into the corresponding grooves 12b by inserting the pusher 62 into the corresponding slits 32a and 32b is performed. Description. On the other hand, as long as the side portions 13a and 14a of the stator coil 12 can be inserted into the corresponding grooves 12b, the side insertion mechanism is not limited thereto. For example, the side portions 13a and 14a of the stator coil 12 can be pushed out from the slits 32a and 32b by moving the pusher inserted into the slits 32a and 32b in the radial direction of the stator core 11.

Further, in the above embodiment, the prevention mechanism 70 having the hook member 72 has been described. On the other hand, if the side portions 13a and 14a accommodated in the slits 32a and 32b are prevented from being separated from the slits 32a and 32b, the prevention mechanism 70 is not limited to the above embodiment. Further, for example, if the phenomenon in which the side portions 13a and 14a are separated from the slits 32a and 32b can be avoided, the prevention mechanism 70 may not be provided. In the case where the prevention mechanism 70 is provided, the hook member 72 may not be used.

According to the above embodiment, the effects shown below are achieved.

The coil deforming device 31 of the present embodiment includes rotation mechanisms 33 and 33 that respectively form one of the pair of transfer jigs 32 and 32 in which the slits 32a and 32b into which the side portions 13a and 14a of the stator coil 12 can be inserted are formed. Or both; and a separation/proximity mechanism 34 that separates/closes the pair of interface clamps 32,32. Therefore, by rotating and separating/proximate the pair of transfer jigs 32, 32 with the side portions 13a, 14a of the stator coil 12 inserted, the stator coil 12 can be deformed without damaging the sides of the stator coil 12. The uniformity of the wires 8 of the portions 13a, 14a.

Further, in the stator manufacturing apparatus 9 and the stator manufacturing method of the present embodiment, since the coil deforming device 31 is provided, each side portion 13a of the stator coil 12 which is deformed without damaging the uniformity of the wire 8 can be used. 14a is inserted into the groove 11b of the stator core 11 without impairing its uniformity.

Here, even in the case where the stator coil 12 composed of the inner coil 13 and the outer coil 14 is inserted in order to insert the respective side portions 13a and 14a of the stator coil 12 into the plurality of grooves 11b, according to the present embodiment, The side portion 13a of the inner coil 13 and the side portion 14a of the outer coil 14 may be inserted into the inner slit 32a and the outer slit 32b of the pair of delivery jigs 32 in parallel with each other. Thereby, the side portions 13a, 14a of the inner coil 13 and the outer coil 14 can be inserted into the plurality of grooves 11b without damaging the interval and the wire between the inner portions 13a and 14a of the inner coil 13 and the outer coil 14. 8 tidy.

Although the embodiment of the present invention has been described above, the above embodiment is merely illustrative of one of the application examples of the present invention, and the technical scope of the present invention is not intended to be limited to the specific configuration of the above embodiment.

Claims (9)

 A coil deforming device comprising: a pair of transfer jigs each having a slit in which a pair of parallel sides of the stator coil are insertable; and a rotating mechanism parallel to each other in a depth direction of the slit a position, an inclined position intersecting the depth direction of the slit, rotating one or both of the pair of transfer jigs; and a separating/adjacent mechanism that separates or closes the pair of transfer jigs from each other .    The coil deforming device of claim 1, further comprising: a preventing mechanism that prevents the side portion from being detached from the slit.    The coil deforming device according to claim 1, wherein the plurality of slits are formed at a predetermined interval from each of the pair of transfer jigs.    A stator manufacturing apparatus, comprising: a coil deforming device according to any one of claims 1 to 3; a support member supporting a stator core; and a winding machine for winding a wire to be inserted into the stator core a stator coil of the pair of side portions parallel to each other in the groove; and a moving mechanism for causing the coil deforming device to enter the position where the slit is transferred at the pair of side portions, and entering the stator core with the pair of transfer jigs a movement between the insertion positions; and a side insertion mechanism that pushes the side portion inserted into the slit from the slit and inserts into the groove facing the slit, the coil deformation device The rotation mechanism is configured such that an angle of the slit matches an angle of the groove into which the pair of side portions are to be inserted at the inclined position, and the separation/proximity mechanism of the coil deforming device is configured to The interval between the openings of the slits is equal to the interval between the grooves into which the pair of side portions are inserted, and the moving mechanism is configured to be The insertion position is such that the opening of the slit faces the opening of the groove into which the pair of side portions are inserted.    A stator manufacturing apparatus according to claim 4, wherein the winding machine is configured to be formed by a cylindrical inner coil and to surround the inner circumference with a predetermined interval from the outer side. The stator coil is constituted by a coil other than the coil.    A stator manufacturing apparatus according to claim 4, wherein the support member is configured to rotate the stator core.    A method for manufacturing a stator, comprising: a coil manufacturing step of winding a wire to form a stator coil having one side opposite to each other; and a step of transferring the slits formed on the pair of transfer jigs parallel to each other Inserting the pair of side portions into the slits in parallel with each other; and performing a coil deformation step of rotating one or both of the pair of transfer jigs so that the angle of the slits is The angle of the groove of the stator core into which the side portion is inserted is uniform; the jig separation/adjacent step is such that the interval between the opening portions of the slit is the same as the interval between the grooves into which the pair of side portions are inserted; a step of inserting the pair of transfer jigs into the stator core such that the opening of the slit faces the opening of the groove; and a side insertion step of inserting into the slit The side portion of the stator coil is pushed out from the slit and inserted into the corresponding groove of the stator core.    The method for manufacturing a stator according to claim 7, wherein in the coil forming step, a stator coil composed of an inner coil and a coil surrounded by the outer coil at a predetermined interval from the outer side is formed, and the pair is transferred to the pair In the jig, an inner slit into which the side portion of the inner coil is inserted and a slit into which the side portion of the outer coil is inserted are formed, and in the transfer step, the side portion of the inner coil is formed The inner slit and the outer slit are inserted into the pair of transfer jigs in parallel with the side portions of the outer coil.    The method for manufacturing a stator according to claim 7 or 8, further comprising: a core rotation step of rotating the stator core to change the groove facing the opening of the slit; The above-described core rotation step is performed after the edge insertion step, and then the above-described coil fabrication step is performed again.