JP2002325408A - Coil insertion method and device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To shorten a coil circumference and stably perform coil insertion work. A jig (19) set in a stator (11) has a slot (13) of a stator (11) into which a coil (15) is inserted.
Opposite to, gaps 41 and 43 for inserting and holding the coil 15 are formed. A plate-shaped pusher 45 is inserted and set behind the gaps 41 and 43. The pusher 45 is moved inside the gaps 41 and 43 to push out the coil 15 and push it into the slot 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for inserting a coil into a slot formed in an inner peripheral portion of a stator core of an electric motor so as to extend in an axial direction.

[0002]

2. Description of the Related Art Conventionally, an operation of inserting a coil into a slot formed in an inner peripheral portion of a stator core is performed by a method as shown in FIGS.
No. 6712). That is, a large number of slots 3 extending in the vertical direction in the figure are formed at equal intervals in the circumferential direction on the inner peripheral portion of the stator core 1 formed in a cylindrical shape in the motor. Inserted.

In the coil insertion device, a plurality of blades 7 holding the coil 5 are annularly arranged at positions corresponding to the internal teeth 6 formed between the slots 3 and inserted into the stator core 1 from below. A stripper 9 for pressing the coil 5 is provided so as to be vertically movable. The stripper 9 presses the coil 5 by pressing into the slot 3 while moving between the blades 7 on the outer periphery.
Are provided at equal intervals in the circumferential direction.

In the above configuration, first, as shown in FIG. 35, the coil 5 is inserted between predetermined blades 7 and held by the blades 7, and then, as shown in FIG. Is set in the coil insertion device so as to face the internal teeth 6. In this state, when the stripper 9 is moved toward the inside of the stator core 1, the coil 5 is pressed by the pressing protrusion 9 a and moves upward while being guided between the blades 7, and enters the slot 3.

When the stripper 9 is further raised and inserted into the stator core 1 as shown in FIG. 37, the coil 5 projects to the opposite side (upper side in the figure) of the stator core 1 and is inserted into the slot 3. By continuing the insertion operation, the coil 5 comes off the blade 7 as shown in FIG. 38, and the insertion operation is completed. After inserting the coil,
After the stripper 9 is retracted, the stator core 1 is removed from the coil insertion device, whereby the coil insertion operation is completed.

[0006]

However, in such a conventional coil insertion method, the lowermost end 5a of the coil 5 held by the blade 7 in FIG. Since the leading portion 5b of the coil 5 needs to be held by the blade 7 as shown in FIG. 37 until it is pushed into the slot 3, the circumference of the coil 5 (the length of one turn) ) Tends to be long, and there is a problem that the cost increases due to the enlargement of the motor and the large consumption of electric wires.

A blade 7 on which the coil 5 is set
Since the size between the blades 7 is determined according to the wire diameter of the coil 5, high precision and surface treatment are required. The insertion force of the coil 5 is increased, and the coil 5 may be extended or cut with the increase of the force. Also, it is impossible to perform a stable coil insertion operation, for example, exceeding the allowable insertion force as a facility and stopping the operation. There's a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to achieve a reduction in the coil circumference and a stable coil insertion operation.

[0009]

To achieve the above object, a first aspect of the present invention is a coil insertion method for inserting a coil into a slot extending in an axial direction of an inner peripheral portion of a stator core. A jig holding the coil in the groove is set at a position facing the inner peripheral portion of the stator core, and the coil in the groove is pressed by a pusher and inserted into the slot.

According to a second aspect of the present invention, in the coil insertion method of the first aspect, the jig is detachably attached to the main body, and is connected to the main body at the time of mounting. And a coil winding jig forming the groove, respectively.
By winding a coil around the coil winding jig and attaching the coil winding jig around which the coil is wound to the main body,
The coil is held in the groove.

According to a third aspect of the present invention, in the coil insertion method according to the second aspect of the present invention, the coil winding jig is divided into a plurality of pieces along the axial direction while being mounted on the main body. When a coil is wound around the coil winding jig, a predetermined interval is maintained between the plurality of divided pieces, and when the coil is pressed by a pusher and inserted into a slot, It is intended to cancel the interval holding.

According to a fourth aspect of the present invention, in the coil insertion method according to any one of the second and third aspects, a plurality of the coil winding jigs are provided, and the coil is continuously connected to the plurality of coil winding jigs. Each time the plurality of coil winding jigs around which the coil is wound are sequentially mounted on the main body, the coil is sequentially inserted into each of a plurality of slots formed along the circumferential direction in the inner peripheral portion of the stator core. There is to do.

According to a fifth aspect of the present invention, in the coil insertion method according to any one of the first to fourth aspects, the coil is pressed while applying vibration to the pusher.

According to a sixth aspect of the present invention, in the coil insertion method according to any one of the first to fifth aspects, the coil is pressed while moving the pusher forward and backward.

According to a seventh aspect of the present invention, in the coil insertion method according to any one of the first to sixth aspects, air flowing in a direction of moving the coil held in the groove toward the slot is supplied into the groove. There is to do.

According to an eighth aspect of the present invention, in a coil insertion device for inserting a coil into a slot formed in an axial direction of an inner peripheral portion of an inner periphery of a stator core, the coil is set at a position facing the inner peripheral portion of the stator core. A jig for holding the coil in the groove and a pusher for pressing the coil held in the groove in a direction orthogonal to the axis and inserting the coil into the slot are provided.

According to a ninth aspect of the present invention, in the configuration of the eighth aspect, the jig has a main body and a coil winding jig detachably mounted on the main body.
This coil winding jig is configured so that a coil is wound before mounting on the main body, and the groove is formed between the jig and the main body during mounting.

According to a tenth aspect of the present invention, in the configuration of the ninth aspect of the present invention, the coil winding jig forms a groove between the coil winding jig and the main body, and the two surfaces located on opposite sides of the jig have a jig. While the distance between them becomes shorter toward the tip of
The two surfaces on both sides in the axial direction are formed so that the distance between them becomes longer toward the tip end of the jig.

The invention of claim 11 is the invention of claim 9 or 10
In the configuration of the invention, the coil winding jig is constituted by divided pieces divided along the axial direction in a state where the coil winding jig is mounted on the main body, and the interval between the divided pieces is variable. There is.

The invention of claim 12 is the invention of claims 8 to 11
In the configuration of any one of the inventions, when the coil held in the groove is inserted into the slot, a lip portion whose tip is inserted into the slot and guides the coil is provided on the jig. There is a configuration.

According to a thirteenth aspect of the present invention, in the configuration of the twelfth aspect, the lip portion is provided at a front end portion of the coil winding jig on the side where the groove is formed. And a separate plate attached to the coil winding jig.

The invention of claim 14 is the invention of claims 9 to 13
In the configuration of any one of the inventions, a plurality of the coil winding jigs are provided, and a rotation driving unit that rotatably supports a center position of an annular coil wound on the coil winding jig with respect to the plurality of coil winding jigs. Each coil winding jig rotated by the rotation drive unit has a coil supply unit for sequentially supplying a coil.

The invention of claim 15 is the invention of claims 8 to 14
In the configuration of any of the inventions, the jig includes a plurality of grooves for holding the coil, and a plurality of pushers provided corresponding to the plurality of grooves are pressed by a pusher pressing unit. And an engagement pressing member that engages with each of the plurality of pushers and moves toward a corresponding slot in a direction orthogonal to the axis.

According to a sixteenth aspect of the present invention, in the configuration of the fifteenth aspect, the engagement pressing member presses a coil adjacent to a coil located forward in a linear movement direction orthogonal to the axis of the pusher pressing unit. In accordance with the pressing operation, the coil moves along the circumferential direction in a direction away from the coil in front of the linear movement direction.

The invention of claim 17 is the invention of claim 15 or 1
In the configuration of the sixth aspect of the invention, the pusher is constituted by a plate member which is inserted into the slit-like groove of the jig in a state of being in close contact with the jig, and the engagement pressing member is inserted so as to sandwich the plate member. It is configured to have an engagement groove.

In a preferred embodiment of the present invention, in the configuration according to the seventeenth aspect, the engaging pressing member for pressing a coil adjacent to a coil located in front of a coil in a linear moving direction orthogonal to the axis of the pusher pressing unit includes the linear moving member. It is configured to be rotatable in the circumferential direction as it moves away from the coil in the front direction.

[0027] The invention of claim 19 is the invention of claims 8 to 18.
The invention according to any one of the above aspects, further comprises a vibration mechanism for vibrating the pusher.

The invention of claim 20 is the invention of claims 8 to 19
In any one of the aspects of the invention, the jig is provided with an air supply passage through which air discharged in a direction for moving the coil held in the groove toward the slot side flows.

The invention of claim 21 is the invention of claims 8 to 20
In the configuration of any one of the inventions described above, a pressing mechanism that presses the end of the inserted coil toward the bottom of the slot is provided in the vicinity of both axial openings of the slot in the stator core.

The invention of claim 22 is the invention of claims 8 to 21
In the configuration of any one of the inventions, the pusher is provided with a protection member holding portion that holds a coil protection member that covers a slot opening side of the coil inserted into the slot, and the protection member holding portion includes the stator core that By being moved in the axial direction along the pusher, the slot is inserted into the inner peripheral opening of the slot.

[0031]

According to the first or eighth aspect of the present invention, a jig holding the coil in the groove is set at a position facing the inner peripheral portion of the stator core, and the jig is set in the groove from the side opposite to the slot. Since the coil is pushed by the pusher and inserted into the slot, compared to the case where the coil is held by the blade and gradually inserted from the end of the slot,
The coil circumference can be shortened, and the motor can be prevented from increasing in size and cost. Further, since the coil held in the groove of the jig is simply pushed in from the direction orthogonal to the axis, the insertion force can be reduced, and a stable coil insertion operation can be performed.

According to the second or ninth aspect of the present invention, the coil winding jig around which the coil is wound is mounted on the main body, so that the coil is held in the groove. From this state, the coil is pushed by the pusher. The coil can be pressed and inserted into the slot of the stator core, so that the coil winding jig is also used as the coil winding frame. This eliminates the need to remove the coil from the winding frame and allows the coil to be used as a single jig. The setting work of is unnecessary. Further, since there is no need to remove the coil from the bobbin, damage to the coil can be suppressed.

According to the third or eleventh aspect of the present invention, the coil is wound while maintaining a predetermined interval between the divided pieces,
By reducing the distance between the split pieces in the wound state of the coil, the tension of the wound coil decreases, and by inserting the coil with the tension reduced, the coil can be prevented from being damaged. it can.

According to the fourth or fourteenth aspect of the present invention, the mutually independent coils inserted into the plurality of slots are continuous by the crossovers, so that there is no need to connect the coil terminals after the coil is inserted. In addition, as compared with the case where the coil terminals are connected, the length of the crossover between the coils can be shortened, and the material cost can be reduced.

According to the invention of claim 5 or 19, since the coil is pushed into the slot while vibrating the pusher, the coil can be inserted reliably.

According to the sixth aspect of the present invention, since the coil is pressed while the pusher is moved forward and backward, the operation of inserting the coil can be performed reliably.

According to the seventh or twentieth aspect of the present invention, the air flowing in the direction of moving the coil held in the groove toward the slot is supplied into the groove, so that the coil inserting operation can be reliably performed. It can be carried out.

According to the tenth aspect of the present invention, when the coil is wound around the coil winding jig, the length of one turn of the coil is substantially changed from the distal end side to the base end side of the coil winding jig. It can be constant, which facilitates the coil insertion operation.

According to the twelfth aspect of the present invention, since the tip of the lip enters the opening of the slot, the coil can be guided by the lip and can be inserted into the slot reliably.

According to the thirteenth aspect, the lip portion is
Since it is constituted by a separate plate material attached to the coil winding jig, it is easier to manufacture and lower in cost than a lip portion integrated with the jig, and is less likely to be damaged.

According to the fifteenth aspect, since the engagement pressing member is engaged with the plurality of pushers and moves in the direction orthogonal to the axis, the corresponding coils are inserted into the slots. The coils corresponding to the plurality of slots can be reliably inserted in the directions orthogonal to the axis.

According to the sixteenth aspect of the present invention, the engagement pressing member that presses the coil adjacent to the coil located in front of the pusher pressing unit in the direction of linear movement perpendicular to the axis of the pusher pressing unit moves forward in the direction of linear movement with the pressing operation. Since the coil moves along the circumferential direction in a direction away from the coil, the coils corresponding to the plurality of slots can be pressed in directions perpendicular to the axis, and the coil insertion operation can be performed more reliably.

According to the seventeenth aspect of the present invention, the engagement pressing member is inserted so as to sandwich the pusher composed of a plate member which is inserted into the slit-like groove of the jig substantially in close contact. Since the insertion groove is provided, the engagement pressing member is securely engaged with the pusher, and the pressing operation on the coil can be reliably performed.

According to the eighteenth aspect of the present invention, the engagement pressing member for pressing the coil adjacent to the coil located in the front in the linear movement direction orthogonal to the axis of the pusher pressing unit moves in the direction away from the coil located in the front in the linear movement direction. Is rotatable in the circumferential direction along with the movement of, so that the operation of pressing the coils corresponding to the plurality of slots in the direction perpendicular to the axis can be reliably performed.

According to the twenty-first aspect of the present invention, since the coils inserted into the slots are sequentially pressed by the pressing mechanism, compared to the case where the entire coil is pressed in a state where the coils are inserted into many slots, The pressing force can be small, and the equipment cost can be reduced.

According to the twenty-second aspect of the present invention, the protection member can be inserted into the slot opening by moving the stator core along the pusher following the coil insertion operation, so that there is no need to separately provide a protection member insertion step. Equipment costs can be reduced.

[0047]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a coil insertion device showing a first embodiment of the present invention, and FIG. 2 is a left side view of FIG. As shown in FIG. 2, the stator core 1 in the motor
1 has a cylindrical shape, and a number of slots 13 extending in the left-right axial direction in FIG.
They are formed at equal intervals in the circumferential direction. A coil 15 as shown in a perspective view in FIG. 3 and a plan view in FIG. 4 is inserted into an appropriate position of the slot 13. The coil 15 is wound by a winding machine (not shown).
One is formed. The portion A in FIG. 4 of the winding portion 17 is inserted into each corresponding slot 13.

When the coil 15 is inserted into the slot 13, it is held by a jig 19 shown in the stator core 11 in FIG. The jig 19 is in the state shown in FIG.
FIG. 5 shows a state in which the held coil 15 is inserted into the slot 13, and a state in which the coil 15 is rotated by 180 degrees about the rotation support shaft 21 from this state, that is, FIG. In the state shown in the sectional view in FIG.
Hold.

FIG. 6 is a side view of FIG. 5, and FIG. 7 is a plan view of FIG. As shown in FIG. 6, the jig 19 is provided with two jig bodies 23 at a predetermined distance from each other, and the lower end of the jig body 23 in FIG.
It is fixed by. As shown in FIG. 5, the fixed block 25 has an outer peripheral portion formed in an arc surface concentric with the inner peripheral surface of the stator core 11.

The jig body 23 includes the rotation support shaft 21 described above.
The coil holding block unit 31 is fixed to the upper side of the center block 29 in FIG. The coil holding block unit 31 includes a pair of inner blocks 35.
And a pair of outer blocks 37. Ends of the pair of inner blocks 35 on the rotation support shaft 21 side are fixed to the center block 29 by bolts 39, and a pair of outer blocks 37 are provided.
The end on the rotation support shaft 21 side is fixed to the center block 29 together with the inner block 35 by the bolt 33 described above.

Between the pair of inner blocks 35 described above, there is provided an extension 29a integrally extending from the center block 29 and extending upward in FIG. Between the extension 29a and the inner block 35 and the inner block 3
Between the outer block 5 and the outer block 37, there are formed gaps 41 and 43 serving as grooves for holding the coil 15, respectively. Further, each of the distal ends of the extension portion 29a, the pair of inner blocks 35, and the pair of outer blocks 37 has an outer peripheral portion formed in an arc surface concentric with the inner peripheral surface of the stator core 11.

At the tip end (upper side in FIG. 5) of the gaps 41 and 43, the coil 1 shown in FIGS.
5 is inserted and held, with a gap between the coil 15 and the coil 15
Pusher 45 for pressing and inserting into the slot 13
Is inserted. The coil 15 has portions A in FIG. 4 which are portions to be inserted into the slots 13 and corresponding grooves 41 and 4.
3 respectively.

As shown in FIGS. 6 and 7, the pusher 45 is formed of a long plate member, and has a pin 47 fixed near the jig main body 23 and a pin 49 fixed to the jig main body 23 side.
The grooves 41,
43. As shown in FIG. 5, the pusher 45 has a positioning hole 45a formed at a position corresponding to the jig main body 23.
The distal ends of the ball plungers 53 and 55 provided in the inner block 35 and the outer block 37 respectively enter and are positioned.

The inner block 35 and the outer block 37
Inside, air supply passages 57 and 59 are respectively formed. Each of the air supply passages 57, 59 is provided with a gap 41, 4
The discharge ports 57a, 59a to the third 3 are open to both the part where the coil 15 is inserted and the space part between the coil 15 and the pusher 45, and the opening direction is set to the discharge direction. The air is inclined with respect to the gaps 41 and 43 so that the air flowing toward the openings (upper sides in FIG. 5) of the gaps 41 and 43 flows out. As shown in FIG. 6, air is introduced into the air supply passages 57 and 59 from an air introduction plug 61 provided on a side surface of one jig main body 23 and air is introduced into the other jig main body 23. Is performed by a connecting pipe 63 connecting the jig bodies 23 to each other.

In the jig 19 as described above, as shown in FIG. 1, the rotation support shaft 21 and the auxiliary shaft 65 adjacent to the rotation support shaft 21 are fixed to the tip of the bracket 67, respectively. The end side is fixed to the tip of a rotation drive shaft 69 rotated by a rotation drive unit (not shown). The rotation drive shaft 69 is rotatably supported by the apparatus frame 71.

The device frame 71 has a pair of guide rails 73 extending in the vertical direction on the side of the bracket 67 side.
A push unit 75 as a pusher pressing unit is provided movably in the vertical direction with respect to the guide rail 73. The push unit 75 has a support member 81 including an upper plate 77 and a side plate 79.
Are movably held with respect to the guide rail 73. On the upper surface of the upper plate 77, a vibration mechanism 82 for vibrating the entire push unit 75 is provided.

Further, as shown in FIG.
A guide bracket 83 extending to the vicinity of the center of the upper plate 77 is attached to the upper end of
3, although omitted in FIG. 1, as shown in FIG.
A pair of guide bushes 85 is mounted. A guide rod 87 that moves up and down by a vertical drive mechanism (not shown) is slidably housed in the guide bush 85, and the lower end of the guide rod 87 is fixed to the upper plate 77.

A pair of support brackets 89 hang down from the upper plate 77 at positions corresponding to the vicinity of both ends of the pusher 45 set in the jig 19, and are bolted to the lower ends of the support brackets 89. At the lower end of 91, a pressing tool 93 is provided. The presser 93 can be moved up and down between the standby position indicated by the solid line in FIG. 1 and the coil insertion completion position further below the intermediate stop position indicated by the two-dot chain line by the above-described vertical drive mechanism.

In the vicinity of the above-mentioned intermediate stop position, the bracket 67 supporting the jig 19 is formed to be bent in a direction perpendicular to the plane of FIG.

FIG. 8 is an enlarged view of the pressing tool 93 shown in FIG. 2. The pressing tool 93 is composed of one push plate 95 which is pressed while being engaged with the pusher 45, and two push plates 95 on both sides thereof. And a plurality of push plates 97. Each of the push plates 95 and 97 constitutes an engagement pressing member.

The central push plate 95 is
1 is fixed to the lower center by bolts 99, and two engagement grooves 95a are formed at the tip (lower end). The four pushers 45 shown in FIG.
The left and right ends of the two pushers 45 on the center in the up-down direction are engaged by the lowering of the pressing tool 93.

A pair of guide rails 101 are formed to be inclined upward from both sides from near the lower part of the bolt 99 in the support tool 91, and a slider 103 is provided on the guide rail 101 so as to be movable.
An upper end of the push plate 97 is rotatably supported by a lower end of the push plate 97 via a rotation support pin 105. Each push plate 97 has one engagement groove 9.
7a are formed, and both ends of the two pushers 45 at both ends in the vertical direction of the four pushers 45 shown in FIG.
It is engaged by the lowering of the pressing tool 93.

The above-mentioned pair of sliders 103 are elastically pressed in a direction approaching each other by a return spring 111 which is bridged between the pins 107 on the slider 103 side and the pins 109 on the support 91 side. Also,
The corners of the lower end openings of the engagement grooves 95a and 97a are chamfered or the like so that the pusher 45 can easily enter.

The stator core 11 is, as shown in FIG.
The work set jig 112 is set on a rotation support table 113. The rotation support base 113 has an arc surface 113 a concentric with the outer peripheral portion of the stator core 11.
3a, four rotating rollers 115 are rotatably provided in contact with the outer peripheral surface of the stator core 11. The stator core 11 rotates with the rotation of the rotating roller 115 so that the slot 13 into which the coil 15 is inserted is located at a position corresponding to the jig 19. Further, guide plates 113b protrude along both sides of the stator core 11 on both sides of the arc surface 113a, and support the side surfaces of the stator core 11.

As shown in FIG. 2, a pair of rotation support guide rails 119 extending in the left-right direction in FIG. 1 are laid on the apparatus base 117 on which the apparatus frame 71 is installed. Along the guide rail 119, the rotary support 113 moves together with the stator core 11 between a standby position indicated by a solid line in FIG. 1 and a coil insertion position indicated by a two-dot chain line.

A nut 121 constituting a ball screw mechanism is fixed to the lower surface of the rotation support table 113.
The screw rod 123 screwed into the device 21 is placed on the device base 117,
It is arranged extending in the left-right direction in FIG. Screw rod 1
At the end of 23, a rotation operation handle 125 is provided,
By operating the handle 125 and rotating the screw rod 123, the rotation support base 113 moves along the guide rail 119.

Next, the operation will be described. First, the work set jig 112 is set to the standby position as shown by the solid line in FIG. 1, and the pressing tool 93 is also set to the standby position shown by the solid line. The jig 19 inserts the four pushers 45 into the gaps 41 and 43 in the state shown in FIGS.
55 and the coil spring 5
1 is attached to prevent the pusher 45 from falling.

The coil 1 shown in FIG. 3 and FIG.
5 at the entrance side (upper side in FIG. 5) of the gaps 41 and 43,
It is inserted with a gap between it and the pusher 45.

Subsequently, the work set jig 112 is advanced from the solid line position to the two-dot chain line position in FIG. 1 together with the stator core 11, and the jig 19 is set in the stator core 11. In this state, the jig 19 is rotated 180 degrees about the rotation support shaft 21 to obtain the state shown in FIG. As a result, the jig 19 has the coil holding block unit 31 located on the lower side, and at this time, the four gaps 41 and 4
3 is in a state of being aligned with the slot 13 of the stator core 11.

In this state, the push rod 75 is lowered to the intermediate stop position shown by the two-dot chain line in FIG. 1 by lowering the guide rod 87 shown in FIG. In the intermediate stop position, the push units 75 are engaged with the engagement grooves 95a and 97a of the push plates 95 and 97 shown in FIG.
It is checked whether the pusher 45 is inserted. This is because the coil 1 is located between the engagement grooves 95a and 97a and the pusher 45.
5 is present, or when the pusher 45 is attached at an angle, the pusher 45 is engaged with the engagement groove 95a,
97a will no longer enter and work failure will occur.
This is to confirm it.

Subsequently, the vibrating mechanism 82 is operated to further lower the bush unit 81 while vibrating, while supplying air to the air supply passages 57 and 59 in the jig 19. With the above-described lowering of the push unit 75, the engagement grooves 95 of the respective push plates 95 and 97
Each end of the corresponding pusher 45 enters into a and 97a.

When the push unit 75 is further lowered while the pusher 45 enters the engagement grooves 95a and 97a, the pusher 45 moves in the gaps 41 and 43 and pushes the coil 15 out of the gaps 41 and 43. And pushed into the slot 13 of the stator coil 11.

At this time, regarding the two coils 15 on the center side in FIG. 5, the gap 41 into which the coils 15 are inserted is in the same direction as the moving direction of the push unit 75 (vertical direction in FIG. 2). And the corresponding slot 13 is also formed substantially in the same direction, so that the push plate 95 that engages with the pusher 45 for pushing the two coils 15 described above, as shown in FIG.
This can be handled by a device fixed to the support 91.

On the other hand, the gaps 43 and the slots 13 corresponding to the two coils 15 on both the left and right sides in FIG. 5 are inclined with respect to the vertical movement direction of the push unit 75 described above. For this reason, the slider 103 moves in the direction away from each other along the guide rail 101 with the lowering operation of the push unit 75, and at the same time, the push plate 97 rotates around the rotation support pin 105, so that the push The movement of the pusher 45 and the coil 15 in the gap 43 inclined with respect to the vertical movement direction of the unit 75 and the operation of inserting the coil 15 into the corresponding slot 13 can be performed smoothly and reliably.

The push unit 75 repeats the ascending / descending operation when descending. This ensures that the coil insertion operation is performed. Further, by vibrating the entire push unit 75 by the vibration mechanism 82 and discharging the air supplied to the air supply passages 57 and 59 to the gaps 41 and 43 so as to blow out toward the slot 13, the coil insertion operation can be performed more reliably. Done.

When the coil insertion operation is completed, the work set jig 112 is retracted leftward in FIG. 1, and the stator coil 11 is moved to the narrow portion of the pusher 45. As a result, a gap is formed between the pusher 45 and the inserted coil 15, and a wedge (not shown) is inserted into the opening of the slot 13 from this gap, and the inserted coil 1 is inserted.
Prevent jumping out of 5. At this time, the vibration mechanism 82 is stopped, and the supply of air to the air supply passages 57 and 59 is also stopped.

After inserting the wedge, push unit 75
Is raised to the intermediate stop position, the push plates 95 and 97 are disengaged from the pusher 45 by the reverse operation, and at this time, the pusher 45 is
5 returns to the position of FIG. 5 and FIG. Thereafter, the push unit 75 is further raised to the standby position, the work set jig 112 is retracted to the standby position, and the jig 19 is rotated 180 degrees about the rotation support shaft 21 to perform a series of coil insertion operations. Ends.

When inserting the coil 15 into another slot 13 of the stator 11, the work set jig 112
Is rotated, and the stator coil 11 is appropriately rotated so that the slot 13 into which the coil 15 is to be inserted next is located at a position corresponding to the jig 19. Perform insertion work.

According to the coil insertion method using the coil insertion device as described above, the pusher 45
5 is pressed in a direction perpendicular to the axis of the stator core 11 and pushed into the slot 13, so that the coil is held by the blade, and the coil is inserted as compared with the conventional one in which the coil is gradually inserted from the end of the slot. The length of the end portion of the coil 15 protruding from both ends of the later slot 13 may be short, the circumference of the coil can be reduced, and an increase in the size and cost of the motor can be avoided. Further, the force required for inserting the coil is only required to be pushed in the direction perpendicular to the axis of the stator 11, so that a small and stable coil inserting operation can be performed.

Next, a second embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 9 is a view corresponding to FIG. 2. In this embodiment, a jig 190 corresponding to the jig 19 in FIG.
And the coil 1 is detachably attached to the main body 127.
29 is provided with a coil winding jig 131 wound therewith. It is the same as the first embodiment except that the jig 190 is separated into a main body 127 and a coil winding jig 131.

The main body 127 has two insertion recesses 133 into which the coil winding jig 131 shown in a perspective view in FIG. 11 is inserted and mounted. In a state where the coil winding jig 131 is mounted in the insertion concave portion 133,
Gaps 135 and 137 as grooves are formed. The gaps 135 and 137 correspond to the gaps 41 and 43 in FIG. 5, and the coil 129 is held in the gaps 135 and 137.

As shown in the perspective view of FIG. 11, the coil winding jig 131 is divided into two pieces along the axial direction of the stator core 11 (the direction orthogonal to the plane of FIG. 10). As the specifics 131a and 131b.

The insertion recess 133 is, as shown in FIG.
The width of the jig 190 on the distal side (the lower side in FIG. 10) in the left-right direction is formed wider than the proximal side (the upper side in FIG. 10). Correspondingly, the coil winding jig 131 also has a wider tip end side than the base end side. That is, the shape of the coil winding jig 131 viewed from the axial direction of the stator core 11 is a trapezoid whose lower base is longer than the upper base in FIG.

On the other hand, the width of the coil winding jig 131 in the axial direction of the stator core 11 (the direction orthogonal to the paper surface in FIG. 10) is opposite to the above, and is opposite to the base end side of the jig 190 (FIG. 1).
0, the upper side is formed wider than the tip side (the lower side in FIG. 10). That is, the coil winding jig 131
10 is a trapezoid whose upper base is longer than the lower base.

By making the coil winding jig 131 have the above-described shape, when the coil 129 is wound, the length of one turn of the coil 129 is increased from the distal end to the proximal end of the coil winding jig 131. Along (from the lower side to the upper side in FIG. 10).

Further, a groove 139 a extending along the axial direction of the stator core 11 is formed in the end face 139 on the base end side of the coil winding jig 131, while the insertion recess 133 is formed.
On the bottom surface 141, positioning projections 141a that fit into the concave grooves 139a are formed. Groove 139a
When the positioning projection 141a is fitted to the main body 127, a predetermined gap 135, 135 is provided between the coil winding jig 131 and the main body 127.
137 are formed.

The coil 12 is attached to the coil winding jig 131 described above.
When the coil 9 is wound, as shown in FIG. 12, before the coil winding jig 131 is mounted on the main body 127, the coil winding jig 131 is formed in a state where a predetermined interval L is formed between the two treatments 131a and 131b.

To secure the interval L, for example, two fixing pins having a fixed interval between each other are fixed to each of the treatments 131a and 131a.
For b, it is sufficient to penetrate vertically in FIG. After the coil 129 is wound, by removing the fixing pin, the distance L between the treatments 131a and 131b becomes L = 0, and the tension of the wound coil 129 is reduced.

In this state, the coil winding jig 131 is connected to the main body 1.
27 is inserted into the insertion recess 133 from the direction perpendicular to the plane of FIG. At this time, the positioning projection 1
41a is fitted into the concave groove 139a, so that the gap 13
5,137 are formed reliably.

The main body 12 of the above-described coil winding jig 131
The mounting work on the main body 127 is performed with the insertion recess 133 of the main body 127 facing downward. Therefore, as in the first embodiment, when the coil is set in the jig 19 and when the coil is inserted into the stator core 11, the jig 19 is used.
Need not be inverted by 180 °.

The operation of inserting the coil 129 into the stator core 11 in a state where the coil 129 is set on the jig 190 is the same as in the first embodiment described above, and a description thereof will be omitted.

In this case, when inserting the coil,
Since the distance L between 1a and 131b is L = 0 and the tension of the wound coil 129 is lower than that during the coil winding operation in FIG.
The coil 129 is prevented from being damaged when it is pushed by 5 and moves downward in the gaps 135 and 137 in FIG.

Further, since the coil winding jig 131 is divided into a plurality of parts (here, two parts 131a and 131b), an appropriate number of the divided pieces may be used according to the thickness of the stator core 11. it can.

As described above, according to the second embodiment, the coil winding jig 131 around which the coil 129 is wound.
By mounting the coil 129 on the main body 127 of the jig 190, the coil 129 can be inserted into the slot 13 of the stator core 11, so that the coil winding jig 131 also serves as the winding frame of the coil 129. For this reason, the work of removing the coil 129 from the winding frame becomes unnecessary, and the work of setting the coil alone on the jig 190 becomes unnecessary, so that the workability is improved. Further, since there is no need to remove the coil 129 from the bobbin, damage to the coil 129 can be suppressed.

FIG. 13 is a perspective view of a coil winding jig 145 showing a third embodiment of the present invention. The coil winding jig 145 has the same overall shape as the coil winding jig 131 combining the two specifics 131a and 131b of the second embodiment shown in FIG. 11, and has a proximal end surface. 1
The same applies to the case where a concave groove 147a in which the positioning projection 141a of the main body 127 is fitted is formed in the main body 47.

Also in this embodiment, the coil 129 is wound around the coil winding jig 145 as shown in FIG.
Is inserted into the insertion recess 133 of the jig 190 and mounted.
In this mounting state, a gap 135, 1
37, both sides 1 of the coil winding jig 145 forming each
At the lower end of FIG. 49 of FIG.
It is formed so as to project in parallel with 49. FIG.
FIG. 3 is a view on arrow B of FIG.

As shown in FIG. 15, the lip portion 151 has a coil 129 wound around a coil winding jig 145.
Is inserted into the slot 13 of the stator core 11,
It enters into the inner end side of the opening 13a of the slot 13. By inserting the coil 129 into the slot 13 in this state,
The coil 129 is guided by the lip 151 to
3 can be reliably and easily performed.

FIG. 16 is an exploded perspective view of a coil winding jig 153 according to a fourth embodiment of the present invention. The coil winding jig 153 has a plate member 157 attached to both sides of the winding jig body 155 as shown in FIG.
A lip portion 157a corresponding to the lip portion 151 in the third embodiment shown in FIG. End face 15 on the proximal end side of winding jig body 155
9, a concave groove 159a is formed in which the positioning projection 141a of the main body 127 is fitted, as in the case of FIG.

The side surface 161 of the winding jig body 155 is
6, a plate material attaching groove 161a is formed along the vertical direction. The depth h of the plate material attaching groove 161a is
It has the same size as the plate thickness t of 57, and is similarly formed on the side surface on the back side of the drawing in FIG.

The plate member 157 is inserted into the plate member attaching groove 161a.
When mounting is performed, as shown in FIG. 17, the upper end of the plate member 157 is aligned with the upper end of the winding jig body 155, and is fixed with an adhesive. In this fixed state, the lower end of the plate 157 is
And project downward only, and this projection serves as a lip 157a.

The thickness of the lip portion 157a, that is, the thickness t of the plate member 157 is extremely thin, 0.27 to 0.30 mm, and the hardness is HRC50 or more. The lip portion 157a comes into contact with the stator core 11 due to a dimensional error of the stator core 11, and receives a force in the surface direction.

However, as in the above-described fourth embodiment shown in FIGS. 16 and 17, the lip 157a is formed by the tip of the plate 157 to be attached to the winding jig main body 155, as shown in FIG. The stress concentrated on the root of the lip 151 when integrated with the coil winding jig 145 can be reduced, and the durability of the lip 157a is improved.

Also, as shown in FIG. 13, it is difficult to finish the tip of the integrated lip portion 151 with high precision.
Although there is a disadvantage in terms of manufacturing cost, a separate plate material 15 is used.
7, the lip portion 157a is formed, thereby facilitating the production and reducing the production cost as compared with that of FIG.

The above-mentioned lip portions 151, 157a
Can be applied to the first embodiment shown in FIGS. However, in the first embodiment, the jig 19 is
It is necessary to perform the operation of inverting by 80 ° outside the stator core 11. After inversion, the stator core 11 is moved to position the jig 19 in the stator core 11. As a result, the lip portions 151 and 157a
3a (see FIG. 15) from the axial direction.

FIG. 18 is a front view of a coil insertion device according to a fifth embodiment of the present invention, and FIG. 19 is a plan view of FIG. However, FIG. 18 is equivalent to FIG. 1 showing the first embodiment viewed from the back side of the drawing. That is, FIG. 18 shows the left and right sides reversed with respect to FIG. 1, and the stator core 11 set on the work set jig 112 moves leftward along the linear guide rail 209 from the state of FIG. Then, it becomes a position corresponding to the jig 190.

On the other hand, the jig 190 projects horizontally from the upper end of the column 162 erected on the base 160 toward the stator core 11, and has an L-shape in plan view.
It is hung at the tip of 62a. In this jig 190, a coil winding jig 165, which will be described later, around which a coil 129 is wound, is mounted in an insertion recess 133 of the main body 127, as in the case of FIG.
9 is held by a pusher 45 which is inserted into the slot 13 by pressing the pusher 9. The pusher 45 is elastically supported by a coil spring 51 similar to that shown in FIG.

A winding machine 163 is disposed on the left side of the base 160 in FIG. This winding machine 163
As shown in FIG. 20, the coil winding jig 165 continuously winds the coil 129 on a total of twelve coil winding jigs 165, which are sequentially connected by two types of connection jigs 167 and 169.

The connecting jig 167 has a ridge 167a formed on both left and right sides in FIG. 20, and this ridge 167a is formed in a groove 165a of the coil winding jig 165 corresponding to the groove 139a in FIG. Fit. On the other hand, connection jig 169
20 are provided on both left and right sides in FIG. 20 with concave portions 165b corresponding to the wide concave portions between the left and right lip portions 151 in FIG.
Is formed with a convex portion 169b that fits into the boss. Accordingly, the twelve coil winding jigs 165 connected to each other by the two types of connection jigs 167 and 169 are adjacent to each other in the opposite direction.

The coil winding jig 165 has a through hole formed in the center of the concave groove 165a in the longitudinal direction in the left-right direction in FIG. 20, and each connecting jig corresponds to this through hole. Although not shown, through holes 167 and 169 are also formed. The rotation support shaft 183 shown in FIGS. 18 and 19 is inserted and fixed in these through holes.

The left end of the rotation support shaft 183 in FIG. 18 is detachably connected to a motor 189 serving as a rotation drive unit via a support bracket 187 erected on a base 185. The right end of the rotation support shaft 183 in FIG. 18 is the support bracket 1 erected on the base 185.
It is rotatably supported by a removable bearing 193 on 91. Therefore, when the motor 189 is driven, the rotation support shaft 183 rotates together with the twelve coil winding jigs 165 and the connection jigs 167, 169.

The winding machine 163 has, as shown in FIG.
The four coil windings 200 are sequentially fed from the four winding reels 195 rotating simultaneously, and the coil supply unit 197 is provided.
Is supplied via

The coil supply section 197 is provided with a moving table 201 which moves in the left-right direction in FIG. 19 along the linear guide rail 199. The moving table 201 is screwed to a screw rod 203 extending along the linear guide rail 199, and is moved by a ball screw mechanism having a nut rotated by a motor (not shown).

On the moving table 201, the above-mentioned 4
A feed mechanism 205 that converges the coil winding 200 and sends it to the winding machine 63 is provided.

Next, the operation of the fifth embodiment will be described. First, a required number of coil winding jigs 165 are connected by connecting jigs 165 and 167, and are set on the winding machine 163 in a state where they are supported by the rotation support shaft 183. At this time, the moving table 201 of the coil supply unit 197 is located at the right end in FIG. In this state, the terminal of the coil winding 200 coming out of the feed mechanism 205 is
19, it is wound around and fixed to the coil winding jig 165 at the rightmost end.

At this point, the motor 189 is driven to rotate the coil winding jig 165 together with the rotation support shaft 183, and at the same time, the movable table 201 is moved leftward in FIG. As a result, the coil winding 200 is sequentially wound around the twelve coil winding jigs 165 from the right one to the left one in FIG. Will be continuously formed.

The coil 12 is attached to all the coil winding jigs 165.
9 is completed, the respective coil winding jigs 165
Is removed from the winding machine 163 together with the rotation support shaft 183. Coil winding jig 165 removed from winding machine 163
Are removed from the rotation support shaft 183 and the connection jigs 167 and 169 are also removed. As shown in FIG. 21, with the concave groove 165a facing upward, the side of the stator core 11 shown in FIGS. Are placed side by side on the receiving table 207.

[0118] The receiving table 207 described above is
Along with the work set jig 112 on which the work 1 is installed, the work guide jig 112 is guided by a linear guide rail 209 and can move in the left and right directions in FIGS.

Each coil winding jig 165 placed on the receiving table 207 is connected to the coil 129 by the crossover 211.
In this state, a set of two pieces on the left side in FIG. 21 is inserted into the insertion recess 133 of the jig 190 and attached in the same manner as shown in FIG. After the mounting, the work set jig 112 is moved to the left in FIG.
As shown in FIG. 2, the jig 190 faces the inner peripheral surface of the stator core 11, that is, the slot 13.

After that, the pusher 45 pushes the coil and inserts it into the slot 13 by lowering the pressing tool 93 as in the first embodiment.

When the operation of inserting the coil 129 wound around the pair of coil winding jigs 165 into the slot 13 is completed, the pressing tool 93 is raised. As the pressing tool 93 is raised, the pusher 45 is also pulled up by the coil spring 51 and rises to a position away from the slot 13.

In this state, the coil winding jig 165 from which the coil 129 has been removed is removed from the main body 127 of the jig 190, and the stator core 11 is removed from the work set jig 11
2 so that the slot 13 into which the coil 129 is next inserted is located at a position corresponding to the jig 190.
Thereafter, the coil winding jig 167 around which the coil 129 is wound is mounted again on the main body 127 of the jig 190,
The same coil insertion operation as above is repeated.

According to the fifth embodiment described above, the independent coils 1 inserted into the respective slots 13 are provided.
29 are connected by the crossover wires 211 shown in FIG. 21, so that the work of connecting the coil terminals between the coils 129 becomes unnecessary, and the distance between the coil terminals is smaller than the case where the coil terminals are connected. The length of the crossover can be shortened, and the material cost can be reduced.

Since the coil 129 is continuously wound around the plurality of coil winding jigs 165, the coil 129
The number of times of attaching and detaching the wire from the winding machine 163 is reduced, and workability is improved.

FIG. 23 (a) is a front view of a coil insertion device according to a sixth embodiment of the present invention, FIG. 23 (b) is a right side view of FIG. 23 (a), and FIG. FIG. However, FIG. 23A corresponds to FIG. 1 showing the first embodiment as viewed from the back side of the drawing sheet, similarly to FIG. That is, FIG. 23 (a) is reversed left and right with respect to FIG.

This embodiment is different from the fifth embodiment shown in FIG.
In this embodiment, the ends 129a of the coils 129 inserted into the slots 13 of the stator core 11 projecting from the stator core 11 to the left and right sides in the axial direction are pressed downward in FIG. 29, that is, toward the bottom of the slots 13. A pressing mechanism 211 is provided.

[0127] The pressing mechanism 211
Are set on the left and right sides of the stator core 11 on the work set jig 112 on which the coil winding jigs 165 mounted on the two insertion recesses 133 of the jig 190 are set.
Are arranged one by one.

As shown in the perspective view of FIG. 25, the pressing mechanism 211 has a clamper 215 that moves up and down by a pneumatic cylinder 213, and the tip of the clamper 215 has a shape as shown in FIG. And those arranged on the left and right project in the direction facing each other.

The pneumatic cylinder 213 is shown in FIG.
23 (a) is provided on the work set jig 112 so as to be movable in the left-right direction in FIG. 23 (a), and the slots 13 are formed radially on the inner circumferential surface. It is in a state inclined along the direction.

In the portion of the pusher 45 shown in FIG. 23 (a) where the lower portion of the right portion is cut away and the width of the pusher 45 in the vertical direction is reduced, a coil protection to be inserted into the opening of the slot 13 after the coil is inserted. A wedge holding portion 221 is provided as a protection member holding portion into which a wedge 219 (see FIG. 27 described later) as a member is inserted. Wedge holder 2
As shown in an enlarged manner in FIG. 26, a moving body 223 is provided at an end of the pusher 45 and is movable in the direction of arrow C along the pusher 45.

The moving body 223 includes a mounting portion 225 movably mounted on the pusher 45, and a side plate portion 227 extending along the pusher 45 from a lower portion of the mounting portion 225.
And a holding claw 227a protruding inward is formed at the lower end of the side plate portion 227. This holding claw 227
The wedge 219 is inserted and set at a in the direction of arrow D.

At the end of the pusher 45, a wedge contact portion 229 projecting downward is formed. When the moving body 223 moves toward the wedge contact portion 229, the wedge 2
29 comes into contact with the contact surface 229a of the wedge contact portion 229. At this time, the side plate portion 227 of the moving body 223 does not come into contact with the wedge contact portion 229 but can move further along the wedge contact portion 229 toward the end.

The moving body 223 is moved by the stator core 11 moving along the pusher 45 and being pushed by the stator core 11. FIG. 27 shows the state at that time. However, in FIG.
The stator core 11 and the moving body 223 are separated from each other so that the insertion state of the stator 9 into the slot 13 can be understood.
Actually, the stator core 11 is in contact with the moving body 223. FIG. 28 is a cross-sectional view showing a state in which wedge 229 is inserted into the opening of slot 13.

On the upper side corresponding to the wedge contact portion 229 of the pusher 45, a protruding portion 231 protruding upward is formed, and a spring receiver 233 provided on the mounting portion 225 side of the protruding portion 231 and a mounting portion 225 Block 2 fixed to
A spring 237 that presses the moving body 223 in a direction away from the protrusion 233 is interposed between the spring 237 and the protrusion 35.

The ends of the block 235, the mounting portion 225, and the spring 237 are mounted so as to be covered from above by a leaf spring member 239 having a U-shaped cross section.

Next, the operation of the sixth embodiment will be described.
First, as shown in FIG. 23, a coil winding jig 131 around which a coil similar to that shown in FIG.
And the stator core 11 is set on the work set jig 112.
As shown in FIG. 26, a wedge 219 is set and held in the wedge holding section 221. It is assumed that the coil winding jig 131 is previously mounted on the receiving table 241 that moves in the left and right direction in FIG. 23A together with the work set jig 112.

Subsequently, from the state shown in FIG. 23A, the work set jig 112 is moved leftward, and as shown in FIG. 29, the stator core 11 is moved to a position corresponding to the jig 190. At this time, the left and right pressing mechanisms 211 are separated from the stator core 11.

By lowering the pusher 93 from the state shown in FIG. 29 to push down the pusher 45, the coil 129 is inserted into the slot 13 as shown in FIG. At this time, the inserted coil 129 has its end 129 a protruding from the slot 13. In FIG. 30B, the pressing mechanism 211 is omitted.

In the state shown in FIG. 30, the pneumatic cylinder 215 of the pressing mechanism 211 is operated to move the clamper 215 to the position shown in FIG.
As shown in (2), it is raised to a position above the coil end 129a in the height direction. After ascending, the left and right pressing mechanisms 211 are approached toward the stator core 11 so that the tip of the clamper 215 is located directly above the coil end 129a. The part 129a is pressed downward and shaped. In FIG. 31B, the right pressing mechanism 211 in the figure is omitted.

Next, from the state shown in FIG. 31, the work set jig 112 is moved rightward in FIG. 31A together with the stator core 11 and the pressing mechanism 211, and as shown in FIG. The holder 221 is brought into contact with the moving body 223. After the contact, the moving body 223 is further pressed and moved by the stator core 11 along the pusher 45 against the elastic force of the spring 237. As shown in FIG. Abuts on the contact surface 229a.

By this contact, the wedge 219 is stopped with respect to the movement of the stator core 11 and the moving body 223, and is inserted into the opening of the slot 13 in which the coil 129 is inserted. As shown in FIG. 26, the pusher 45 at the position where the wedge 219 is inserted is not inserted into the slot 13 because the lower side is cut away and the width in the vertical direction is reduced. The inserted wedge 219 does not interfere.

When the insertion of the wedge 219 is completed, FIG.
As shown in FIG. 3, when the pressing tool 93 is raised, the pusher 45 is raised by the action of the coil spring 51. Further, the swork set jig 112 is moved leftward from the state of FIG. 32 so that the data core 11 is at a position corresponding to the jig 190. Subsequently, the clamper 215 of the clamp mechanism 211 is raised and separated from the coil end portion 129a, and then retracted and further lowered to return to the original position shown in FIG.

Next, from the state of FIG. 33, the work set jig 112 is moved rightward, and as shown in FIG.
With the stator core 11 at the same position as that in FIG. 23 away from the jig 190, the coil winding jig 131 with the coil 129 removed
Is removed from the insertion recess 133 of the jig 190.

Lastly, the stator core 11 is rotated by a predetermined angle to prepare for the next coil insertion operation.

According to the sixth embodiment, the coils 129 inserted into the slots 13 of the stator core 11 are sequentially pressed and shaped by the pressing mechanism 211, so that the coils are inserted into the many slots 13. As compared with the case where the entire coil is pressed in this state, the pressing force is small, and a dedicated shaping machine is not required, so that the equipment cost can be reduced.

Further, by moving the stator core 11 along the pusher 45 following the coil inserting operation, the wedge 219 can be inserted into the opening of the slot 13, so that there is no need to separately provide a step of inserting the wedge 219, and equipment costs are reduced. Can be suppressed.

[Brief description of the drawings]

FIG. 1 is a front view of a coil insertion device according to a first embodiment of the present invention.

FIG. 2 is a left side view of FIG.

FIG. 3 is a perspective view of a coil used in the coil insertion device of FIG.

FIG. 4 is a plan view of the coil of FIG. 3;

FIG. 5 is an enlarged sectional view of a jig used in the coil insertion device of FIG.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is an enlarged view of the pressing tool shown in FIG. 2;

FIG. 9 is a side view of a device corresponding to FIG. 2, showing a second embodiment of the present invention.

FIG. 10 is an explanatory view showing the tip of the jig in FIG. 9;

FIG. 11 is a perspective view of a coil winding jig mounted on the jig main body of FIG. 10;

FIG. 12 is a perspective view showing a state where a coil is wound around the coil winding jig of FIG. 11;

FIG. 13 is a perspective view of a coil winding jig showing a third embodiment of the present invention.

FIG. 14 is a view as viewed in the direction of arrow B in FIG. 13;

FIG. 15 is an explanatory view showing a state in which the jig on which the coil winding jig of FIG. 13 is mounted is opposed to the inner surface of the stator core.

FIG. 16 is an exploded perspective view of a coil winding jig showing a fourth embodiment of the present invention.

FIG. 17 is a perspective view of a coil winding jig showing a fourth embodiment of the present invention.

FIG. 18 is a front view showing a coil insertion device according to a fifth embodiment of the present invention.

FIG. 19 is a plan view of FIG. 18;

20 is a perspective view of a coil winding jig used in the coil insertion device of FIG.

FIG. 21 is a perspective view showing a state where a coil is wound around the coil winding jig of FIG. 20;

FIG. 22 is an explanatory view showing a state where the coil winding jig of FIG. 21 is inserted into a slot of a stator core.

23 (a) is a front view showing a coil insertion device according to a sixth embodiment of the present invention, and FIG. 23 (b) is a right side view of FIG.

FIG. 24 is a plan view of FIG.

FIG. 25 is a perspective view of a pressing mechanism used in the sixth embodiment.

FIG. 26 is an exploded perspective view of a part of a wedge holding portion used in the sixth embodiment.

FIG. 27 is an operation explanatory view showing a state in which the wedge held by the wedge holding section in FIG. 26 is inserted into a slot.

FIG. 28 is a cross-sectional view showing a state where a wedge is inserted into a slot.

FIG. 29 is an operation explanatory view showing a state in which the stator core has been moved from the state of FIG. 23A to a position corresponding to a jig.

30A is an operation explanatory view showing a state in which the pressing tool is lowered from the state of FIG. 29 to insert the coil into the slot, and FIG. 30B is a right side view of FIG.

FIG. 31 (a) is an operation explanatory diagram showing a state where the clamper is raised by operating the pressing mechanism from the state of FIG. 30;
(B) is a right side view of (a).

FIG. 32 is an operation explanatory view showing a state in which the stator core is moved rightward from the state of FIG. 31 (a) to abut on the moving body of the wedge holding section.

FIG. 33 is an operation explanatory view showing a state in which the stator core is moved to the left from the state of FIG. 32 to a position corresponding to the jig.

FIG. 34 is an operation explanatory view showing a state where the stator core is moved rightward from the state of FIG. 33 to a position away from the jig.

FIG. 35 is an operation explanatory view showing a state in which a coil is held by a blade in a coil insertion device according to a conventional example.

FIG. 36 is an operation explanatory diagram showing a state where the stator core is set in the coil insertion device from the state of FIG. 35;

FIG. 37 is an operation explanatory diagram showing a state where a coil is inserted by a stripper from the state of FIG. 36;

38 is an operation explanatory diagram showing a state in which the coil insertion operation has been completed from the state of FIG. 37;

[Explanation of symbols]

 11 Stator core 13 Slot 15, 129 Coil 19, 190 Jig 41, 43, 135, 137 Gap (groove) 45 Pusher 75 Push unit (Pusher pressing unit) 82 Vibration mechanism 95, 97 Push plate (engagement pressing member) 95a, 97a Engagement groove 127 Main body 131, 145, 153, 165 Coil winding jig 131a, 131b Cure (division piece) 151, 157a Rip 157 Plate 189 Motor (rotation drive) 197 Coil supply unit 211 Press mechanism 219 Wedge (Coil protection member) 221 Wedge holding part (protection member holding part)

Continued on the front page (72) Inventor ▲ Taka ▼ Yoshinori Hayashi 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd. (72) Inventor Akira Nozaki 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor ( 72) Inventor Mitsutoshi Watanabe 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa F-term (reference) 5H615 AA01 BB01 BB05 BB14 PP01 PP12 PP13 PP14 QQ02 QQ06 QQ12 QQ26 QQ27 SS10 SS11

Claims (22)

[Claims] In a coil insertion method for inserting a coil into a slot formed by extending an inner peripheral portion of an inner peripheral portion of the stator core in an axial direction, the coil is held in a groove at a position facing the inner peripheral portion of the stator core. A jig is set, and the coil in the groove is pressed by a pusher and inserted into the slot. 2. The jig has a main body, and a coil winding jig that is detachably mounted on the main body and forms the groove between the main body and the main body when the main body is mounted. The coil is wound around the coil winding jig, and the coil winding jig around which the coil is wound is mounted on the main body, so that the coil is held in the groove. The described coil insertion method. 3. The coil winding jig is composed of divided pieces that are divided into a plurality of pieces along the axial direction in a state where the coil winding jig is mounted on the main body. When the coil is wound around the coil winding jig, The method according to claim 2, wherein a predetermined interval is held between the plurality of divided pieces, and when the coil is pressed by a pusher and inserted into a slot, the interval is released. Coil insertion method. 4. A plurality of coil winding jigs are provided, a coil is continuously wound around the plurality of coil winding jigs, and the plurality of coil winding jigs around which the coils are wound are sequentially mounted on the main body. Each time, a plurality of slots formed in the stator core inner peripheral portion along the circumferential direction,
4. The method according to claim 2, wherein the coils are inserted sequentially. 5. The coil insertion method according to claim 1, wherein the coil is pressed while applying vibration to the pusher. 6. The coil insertion method according to claim 1, wherein the coil is pressed while moving the pusher forward and backward. 7. The coil insertion method according to claim 1, wherein air flowing in a direction to move the coil held in the groove toward the slot is supplied into the groove. 8. A coil insertion device for inserting a coil into a slot formed to extend in the axial direction of an inner peripheral portion of a stator core, wherein the coil is set at a position facing the inner peripheral portion of the stator core and the coil is inserted into a groove. Jig to hold
A coil insertion device comprising: a pusher that presses a coil held in the groove in a direction orthogonal to the axis and inserts the coil into a slot. 9. The jig has a main body and a coil winding jig detachably attached to the main body. The jig is mounted on the jig before mounting on the main body. The coil insertion device according to claim 8, wherein the coil is wound and the groove is formed between the coil and the main body when the coil is mounted. 10. The coil winding jig is formed such that a groove is formed between the coil winding jig and the two surfaces located on opposite sides of the main body so that a distance between the two ends becomes shorter toward the tip end of the jig. The coil insertion device according to claim 9, wherein the two surfaces on both sides in the axial direction are formed such that a distance between the two surfaces increases toward the tip end of the jig. 11. The coil winding jig is composed of divided pieces that are divided into a plurality of pieces along the axial direction in a state where the coil winding jig is mounted on the main body, and the interval between the divided pieces is variable. The coil insertion device according to claim 9 or 10, wherein: 12. A jig is provided with a lip for inserting a tip held in the slot and guiding the coil when the coil held in the groove is inserted into the slot. The coil insertion device according to any one of claims 8 to 11, wherein: 13. The lip portion is provided at a front end portion of the coil winding jig on the side where the groove is formed, and the lip portion is formed of a separate plate material attached to the coil winding jig. 13. The coil insertion device according to claim 12, wherein the coil insertion is performed. 14. A rotary drive unit for providing a plurality of coil winding jigs, and for rotating and supporting a center position of an annular coil wound on the coil winding jigs with respect to the plurality of coil winding jigs; The coil insertion device according to any one of claims 9 to 13, further comprising a coil supply unit that sequentially supplies a coil to each of the coil winding jigs rotated by the unit. 15. The jig includes a plurality of grooves for holding a coil, and the plurality of pushers provided corresponding to the plurality of grooves are pressed by a pusher pressing unit. The coil insertion device according to any one of claims 8 to 14, further comprising an engagement pressing member that engages with each of the pushers and moves toward a corresponding slot in a direction orthogonal to the axis. 16. The engagement pressing member, which presses a coil adjacent to a coil forward in a linear movement direction orthogonal to the axis of the pusher pressing unit, causes the coil to move forward in the linear movement direction with a pressing operation. The coil insertion device according to claim 15, wherein the coil insertion device moves along a circumferential direction in a direction away from the coil. 17. The pusher is constituted by a plate member which is inserted into the slit-like groove of the jig in a state of being in close contact with the slit member, and the engagement pressing member is inserted so as to sandwich the plate member. The coil insertion device according to claim 15, further comprising an engagement groove. 18. An engagement pressing member that presses a coil adjacent to a coil that is forward in a linear movement direction orthogonal to the axis of the pusher pressing unit, moves in a direction away from the coil that is forward in the linear movement direction. The coil insertion device according to claim 17, wherein the coil insertion device is rotatable in a circumferential direction. 19. The coil insertion device according to claim 8, further comprising a vibration mechanism that vibrates the pusher. 20. The jig according to claim 8, wherein an air supply passage through which air discharged in a direction for moving the coil held in the groove toward the slot is provided in the jig. 4. The coil insertion device according to claim 1. 21. Inserting the end of the inserted coil in the vicinity of the opening at both ends in the axial direction of the slot in the stator core,
21. The coil insertion device according to claim 8, further comprising a pressing mechanism that presses the slot toward the bottom. 22. The pusher is provided with a protection member holding portion for holding a coil protection member that covers a slot opening side of a coil inserted into the slot, and the protection member holding portion moves the stator core along the pusher. The coil insertion device according to any one of claims 8 to 21, wherein the coil insertion device is inserted into an inner peripheral opening of the slot by being moved in an axial direction.