JP4841464B2 - Press-fitting device - Google Patents

Description

  The present invention relates to a press-fitting device. Specifically, the present invention relates to a press-fitting device that press-fits a coiled divided winding portion into a frame.

  Conventionally, a motor is used in a hybrid vehicle. Such a motor includes, for example, a cylindrical motor case and a rotor that is rotatably held inside the motor case.

  The rotor includes a substantially cylindrical yoke in which a permanent magnet is incorporated, and a rod-shaped shaft that passes through the central axis of the yoke. The motor case is provided with a stator whose polarity can be switched. This motor rotates a rotor using a repulsive force generated by a magnetic force between a permanent magnet built in a yoke and a stator.

  The above stator includes an annular frame and a divided winding portion arranged on the frame and wound with a plurality of coils. This stator is manufactured by, for example, arranging a plurality of divided winding portions in an annular shape, pressing the divided winding portions into the frame using a press-fitting device in this state, and then molding with resin. .

As this press-fitting device, for example, there is a press-fitting device for press-fitting a turntable into an output shaft of a motor (see, for example, Patent Document 1). According to this press-fitting device, it is possible to prevent displacement of the turntable in the press-fitting direction.
JP 2004-139650 A

However, in the stator, it is necessary to align the height of the end face of the divided winding portion with respect to the frame. If the end faces of the split winding section are not aligned, when molding with resin, the resin will leak, the mold height will not be constant, and the wires that make up the split winding section will be securely inserted. This is because it cannot be zinged.
In order to solve this problem, even when the press-fitting device disclosed in Patent Document 1 is applied, when there are a plurality of members to be press-fitted, such as the split winding portion, the heights of the end surfaces of the plurality of members are Cannot be aligned.

  An object of the present invention is to provide a press-fitting device capable of press-fitting a plurality of divided winding portions into a frame so that the heights of end faces thereof are uniform.

  The press-fitting device of the present invention is a press-fitting device that press-fits a plurality of coiled divided winding portions arranged in an annular shape into an annular frame, and the plurality of divided winding portions are arranged in an annular shape. A pallet placed on the frame, on which the frame is placed, a pressing portion having a pressing reference surface facing the plurality of divided winding portions, and the pressing portion sandwiching the plurality of divided winding portions A work set portion provided on the opposite side of the pressing reference surface, a frame set portion provided on the opposite side of the pressing reference surface of the pressing portion across the plurality of divided winding portions, and the work set portion An urging portion that is provided and urges the plurality of divided winding portions toward the pressing reference surface of the pressing portion, and the frame setting portion is moved toward the pressing portion, whereby the frame setting portion Pull the frame from the pallet A pressing drive unit that brings the frame close to a pressing reference surface of the pressing unit and press-fits a plurality of divided winding portions on the frame into the frame; and a lifting drive unit that moves the work set unit up and down It is characterized by providing.

  According to the present invention, first, a plurality of divided winding portions are arranged on a frame in an annularly arranged state, and this frame is placed on a pallet. Next, the frame driving unit is moved toward the pressing unit by the pressing drive unit. As a result, the frame is pulled away from the pallet, and the frame is brought close to the pressing reference surface of the pressing portion. Since the divided winding portion is disposed between the pressing portion and the frame, the divided winding portion is pressed by the pressing reference surface of the pressing portion and is press-fitted into the frame.

At this time, the work winding unit is moved up and down by the lifting drive unit, and the divided winding unit is urged toward the pressing reference plane of the pressing unit by the urging unit provided in the work setting unit. Press into the frame.
Therefore, even if the divided winding portion is pressed with the pressing reference plane, the divided winding portion does not move away from the pressing reference plane, so that the height of the end face of the divided winding portion is aligned with the height of the pressing reference plane. be able to.

  In this case, it is preferable to further include a work setting device in which the divided winding portion and the frame are set on the pallet, and a transport unit that transports the pallet from the work setting device to the frame setting portion.

According to this invention, first, in the work setting device, the divided winding portion and the frame are set on the pallet. Thereafter, the pallet is conveyed from the work setting device to the frame setting unit by the conveying unit. Next, the frame drive unit is driven by the pressing drive unit, and the work set unit is driven by the lift drive unit to press-fit the divided winding unit into the frame. While the divided winding portion is press-fitted into the frame, the work setting device sets the next divided winding portion and frame on the pallet.
Therefore, since the step of press-fitting the divided winding portion into the frame and the step of setting the divided winding portion and the frame on the pallet can be performed simultaneously, the cycle time can be shortened.

  According to the present invention, first, a plurality of divided winding portions are arranged on a frame in an annularly arranged state, and this frame is placed on a pallet. Next, the frame driving unit is moved toward the pressing unit by the pressing drive unit. As a result, the frame is pulled away from the pallet, and the frame is brought close to the pressing reference surface of the pressing portion. Since the divided winding portion is disposed between the pressing portion and the frame, the divided winding portion is pressed by the pressing reference surface of the pressing portion and is press-fitted into the frame. At this time, the work winding unit is moved up and down by the lifting drive unit, and the divided winding unit is urged toward the pressing reference plane of the pressing unit by the urging unit provided in the work setting unit. Press into the frame. Therefore, even if the divided winding portion is pressed with the pressing reference plane, the divided winding portion does not move away from the pressing reference plane. be able to.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 are a plan view and a cross-sectional view of a stator 10 manufactured by a press-fitting device 1 according to an embodiment of the present invention.
The stator 10 is attached inside a cylindrical motor case (not shown). In addition, a rotor having a permanent magnet is rotatably held in the motor case. According to this motor, the repulsive force generated by the magnetic force between the permanent magnet and the stator is used by switching the polarity of the stator. Thus, the rotor can be rotated.

  The stator 10 described above includes a plurality (18 in this case) of arc-shaped divided winding portions 11 and a winding frame 12 as an annular frame to which these divided winding portions 11 are attached in an annular shape. And an annular stator frame 13 to which the winding frame 12 is attached.

The winding frame 12 includes an annular frame main body 121 and a wall portion 122 erected on the inner end edge of the frame main body 121.
The tip of the wall 122 is slightly inclined toward the outside.

  The divided winding portion 11 is formed in a coil shape by a core portion 111 formed by laminating electromagnetic steel plates, a cover portion 112 covering the core portion 111, and an electric wire wound around the outer peripheral surface of the cover portion 112. Winding portion 113.

The cover portion 112 has a U-shaped cross section, and includes a lower portion 114 that covers the lower surface of the core portion 111, a wall portion 115 that stands on the lower portion 114 and covers the side surface of the core portion 111, and a tip of the wall portion 115. And an upper part 116 that covers the upper surface of the core part 111.
The wall portion 115 side of the lower portion 114 is exposed, and a winding contact portion 411 of the work set portion 24 described later contacts.
The wall 115 side of the upper part 116 is exposed, and a winding pressing part 53 of a work pressing mechanism 27 described later comes into contact therewith.

The above-described divided winding portions 11 are arranged in an annular shape, and are pressed into the winding frame 12 from above in this state.
Then, the wall portion 115 of the cover portion 112 of the divided winding portion 11 moves downward while sliding on the wall portion 122 of the winding frame 12. At this time, since the front end of the wall portion 122 is slightly inclined outward, it is easy to press-fit the wall portion 115 of the divided winding portion 11 into the wall portion 122 of the winding frame 12.

  Although not shown, a protrusion is provided on the wall portion 122 of the winding frame 12, and when the divided winding portion 11 is press-fitted into the winding frame 12, a plurality of divided portions can be obtained by using this protrusion as a reference. The phase of the winding portion 11 can be adjusted.

3 and 4 are a front view and a cross-sectional view of the press-fitting device 1.
The press-fitting device 1 processes the workpiece 29 to manufacture the stator 10 described above, and includes a base 20 and a work setting device 21 installed on the floor surface 3, and extends from the work setting device 21 onto the base 20. A conveying conveyor 22 as a conveying unit, a pressing unit 23 provided above the base unit 20, a work setting unit 24 and a frame setting unit 25 provided facing the pressing unit 23, and provided inside the base unit 20 And a workpiece lifting mechanism 26 that lifts and lowers the workpiece setting unit 24 and a workpiece pressing mechanism 27 that is provided inside the base 20 and serves as a pressing drive unit that lifts and lowers the frame setting portion 25.

  The work setting device 21 includes a base 211, a work set substrate 212 provided on the base 211, an elevating drive unit 213 provided inside the base 211 for raising and lowering the work set substrate 212, and an upper part of the base 211 And a safety door 214 provided on the vehicle.

  The conveyor 22 extends from the base 211 of the work setting device 21 to the base 20 and transports the work 29 from the base 211 of the work setting device 21 to the base 20.

The safety door 214 can be opened and closed. By opening the safety door 214, the pallet 28 can be reached.
The work set substrate 212 has a plurality of (18) recesses formed along the outer periphery, and the split winding portions 11 are arranged in an annular shape by disposing one split winding portion 11 in each recess. It can be done.

FIG. 5 is a partially enlarged cross-sectional view of the press-fitting device 1.
The workpiece 29 described above includes the above-described divided winding portion 11, the winding frame 12, and the stator frame 13, and is handled while being set on the pallet 28. The pallet 28 includes a frame positioning portion 281 on which the stator frame 13 is set and positioned.
A stator frame 13 to which the winding frame 12 is attached is set on the frame positioning portion 281 of the pallet 28, and the divided winding portions 11 are placed on the winding frame 12 in an annular shape. Has been.

The pressing portion 23 includes a slide guide 50 (see FIG. 3) extending upward from the base portion 20, a base portion 51 provided at the upper end of the slide guide 50, a pressing reference portion 52 provided on the lower surface of the base portion 51, And 18 winding pressing portions 53 extending downward from the lower surface of the base portion 51.
The lower surface of the pressing reference portion 52 is a smooth pressing reference surface 52A.
The lower end surface of the winding pressing portion 53 is a smooth pressing reference surface 53A having the same height as the pressing reference surface 52A. A pressing reference surface 53 </ b> A of the winding pressing portion 53 faces the divided winding portion 11 set on the pallet 28.

  Further, an insertion hole 54 into which the elevating guide part 253 is inserted is formed in the base part 51 and the pressing reference part 52 of the pressing part 23.

The work set unit 24 has a flat plate shape, is provided on the opposite side of the pressing reference surface 53A of the pressing unit 23 with the plurality of divided winding units 11 interposed therebetween, and includes a plurality of (18) concave portions along the outer periphery. 241 is formed. One divided winding portion 11 is disposed in each recess 241.
Each concave portion 241 is provided with a biasing portion 40 that biases the divided winding portion 11 upward, that is, toward the pressing reference surface 53A of the winding pressing portion 53.

The urging unit 40 includes a guide bar 41 that can vertically pass through the work set unit 24 and a coil spring 42 that urges the guide bar 41 upward.
The upper end of the guide bar 41 is a winding contact portion 411 that contacts the lower surface of the divided winding portion 11. When the winding contact portion 411 is pressed downward, the coil spring 42 contracts, resists the pressing force, and biases the winding contact portion 411 upward.
The lower end of the guide bar 41 can be locked to the lower surface of the work set unit 24, thereby restricting upward movement of the guide bar 41.

  The work set unit 24 is provided with four cylindrical ball bush holders 242 extending vertically. Further, a hole 243 is formed on the upper surface of the work set unit 24.

  The workpiece elevating mechanism 26 includes an elevating pin 261 connected to the center of the lower surface of the work setting unit 24, and a hydraulic elevating drive unit 262 that elevates the elevating pin 261.

  The frame set portion 25 is provided on the opposite side of the pressing reference surface 53A of the pressing portion 23 with the plurality of divided winding portions 11 interposed therebetween. The frame setting section 25 includes a movable base 251, a frame contact section 252 that is provided on the movable base 251 and that contacts the winding frame 12, and is provided on the movable base 251 to guide the lifting and lowering of the work setting section 24. Four lifting guide portions 253, a lifting width adjusting plate 254 provided on the movable base 251 to define the lowest position of the work set portion 24, and an uppermost position of the work set portion 24 provided on the movable base 251. Elevating / lowering restricting portion 255.

  The raising / lowering guide part 253 extends upward from the movable base 251 and is inserted into the ball bush holder 242 of the work setting part 24. Thereby, the work set part 24 can be moved up and down smoothly along the elevating guide part 253.

  The raising / lowering width adjusting plate member 254 is laid on the movable base 251 so that the lower surface of the work set portion 24 can come into contact therewith. By adjusting the thickness of the lifting / lowering width adjusting plate member 254, the lowermost position of the work setting unit 24 can be adjusted.

  The elevating / lowering restricting portion 255 extends upward from the movable base 251, penetrates the work set portion 24, and can be locked to the bottom surface of the hole 243, thereby restricting the upward movement of the work set portion 24. The uppermost position of the work set unit 24 is determined.

  The lift width d of the work setting unit 24 is defined by the above-described lift width adjusting plate member 254 and the lift restriction portion 255.

  A through hole 256 is formed in the center of the movable base 251 and the elevation width adjusting plate member 254. The lifting pins 261 of the workpiece lifting mechanism 26 are inserted through the through holes 256.

  The work pressing mechanism 27 moves the movable base 301 up and down along the slide guide 50 described above. The work pressing mechanism 27 moves the frame set portion 25 toward the pressing reference surface 53 </ b> A of the pressing portion 23 by moving the movable base 301 up and down.

  A procedure for machining the workpiece 29 using the press-fitting device 1 will be described with reference to FIGS. 3 and 4.

In the work set device 21, the work set substrate 212 is raised by the elevating drive unit 213. Next, the safety door 214 is opened, the stator frame 13 is attached to the winding frame 12 and placed on the pallet 28, and the divided winding portions 11 are arranged in an annular shape using the work set substrate 212. Is placed on the winding frame 12.
Subsequently, the safety door 214 is closed and the transfer conveyor 22 is driven to transfer the work 29 from the work setting device 21 onto the frame setting unit 25.

Subsequently, the workpiece lifting mechanism 26 and the workpiece pressing mechanism 27 are driven to process the workpiece 29. That is, the divided winding portion 11 is press-fitted into the winding frame 12. At the same time, the work set device 21 sets the next work 29.
Thereafter, the processed workpiece 29 is transferred from the frame set unit 25 to the next process by the transfer conveyor 22, and the next workpiece 29 is transferred to the frame set unit 25.

  Next, a procedure for press-fitting the divided winding portion 11 into the winding frame 12 by the press-fitting device 1 will be described with reference to FIGS. 5, 6, and 7.

In a state in which the pallet 28 is transported onto the frame set unit 25 by the transport conveyor 22, the work set unit 24 is located at the uppermost position with respect to the frame set unit 25 as shown in FIG. 5.
Here, the height of the divided winding portion 11, that is, the height from the lower surface of the lower portion 114 to the upper surface of the upper portion 116 of the divided winding portion 11 is defined as T1. On the other hand, the dimension from the upper surface of the winding contact portion 411 of the urging portion 40 to the upper surface of the work setting portion 24 is set to T2 shorter than T1 by t.

Next, the work set unit 24 and the frame set unit 25 are raised by the work lifting mechanism 26 and the work pressing mechanism 27 while maintaining the distance between the work set unit 24 and the frame set unit 25.
Then, the frame contact portion 252 of the frame setting portion 25 contacts the winding frame 12 on the pallet 28. Further, since each of the divided winding portions 11 is placed on the winding frame 12 in an annular arrangement, the divided winding portions 11 are accommodated in the recesses 241 of the work set portion 24, and the winding contact of the work set portion 24 is performed. The part 411 contacts the lower surface of each divided winding part 11.

  Subsequently, the work set unit 24 and the frame set unit 25 are further raised, and the winding frame 12 is supported and raised by the frame set unit 25. Then, since the winding frame 12 is already attached to the stator frame 13, the divided winding portion 11, the winding frame 12, and the stator frame 13 are united and lifted away from the pallet 28.

  In this state, the winding contact portion 411 of the urging portion 40 contacts the lower portion 114 of the divided winding portion 11, and the lower end of the guide bar 41 is locked to the lower surface of the work setting portion 24. As a result, the upper surface of the upper portion 116 of the divided winding portion 11 is higher than the upper surface of the work set portion 24 by a dimension t.

  Thereafter, as shown in FIG. 6, when the work set unit 24 and the frame set unit 25 are further raised, the upper surface of the work set unit 24 comes into contact with the pressing reference surface 52 </ b> A of the pressing reference unit 52 and the divided winding unit 11. Is in contact with the pressing reference surface 53 </ b> A of the winding pressing portion 53.

  Since the upper surface of the upper portion 116 of the divided winding portion 11 is higher than the upper surface of the work setting portion 24 by the dimension t, the winding pressing portion 53 presses the divided winding portion 11 and the work setting portion. The 24 winding contact portions 411 are lowered by the dimension t. Thereby, since the guide bar 41 is lowered by the dimension t, the coil spring 42 is contracted by the dimension t. Due to the restoring force of the coil spring 42, the divided winding part 11 causes the pressing reference surface 53 </ b> A of the winding pressing part 53. Be energized by.

Subsequently, as shown in FIG. 7, while maintaining the state in which the work setting unit 24 is in contact with the pressing reference unit 52, the frame setting unit 25 is further raised by the work pressing mechanism 27, and the lower surface of the work setting unit 24. The upper surface of the frame setting unit 25 is brought into contact with the frame. Thereby, the divided winding portion 11 is press-fitted into the winding frame 12.
At this time, the divided winding portion 11 is always urged against the pressing reference surface 53 </ b> A of the winding pressing portion 53. Therefore, even when the divided winding portion 11 is press-fitted into the winding frame 12, the height of the upper surface of the divided winding portion 11 is equal to the pressing reference surface 53 </ b> A of the winding pressing portion 53.

  Thereafter, when the work set unit 24 and the frame set unit 25 are moved down, the stator 10 completed by press-fitting the divided winding unit 11 into the winding frame 12 is placed on the pallet 28.

According to this embodiment, there are the following effects.
(1) The procedure for press-fitting the divided winding portion 11 into the winding frame 12 by the press-fitting device 1 is as follows. First, the plurality of divided winding portions 11 are arranged on the winding frame 12 in an annularly arranged state, and the winding frame 12 is placed on the pallet 28. Next, the frame setting unit 25 is moved toward the pressing unit 23 by the work pressing mechanism 27. As a result, the winding frame 12 is pulled away from the pallet 28, and the winding frame 12 is brought close to the pressing reference surface of the pressing portion 23. Since the divided winding portion 11 is disposed between the pressing portion 23 and the winding frame 12, the divided winding portion 11 is pressed by the pressing reference surface 53 </ b> A of the pressing portion 23 and is applied to the winding frame 12. Press fit.

At this time, the workpiece raising / lowering mechanism 26 moves the workpiece setting unit 24 up and down, and the urging unit 40 provided on the workpiece setting unit 24 urges the divided winding unit 11 toward the pressing reference surface 53 </ b> A of the pressing unit 23. Meanwhile, the divided winding portion 11 is press-fitted into the winding frame 12.
Therefore, even if the divided winding portion 11 is pressed by the pressing reference surface 53A, the divided winding portion 11 does not move away from the pressing reference surface 53A. Therefore, the height of the end surface of the divided winding portion 11 is set to the pressing reference surface. They can be aligned at a height of 53A.

(2) The procedure for machining the workpiece 29 using the press-fitting device 1 is as follows. First, in the work setting device 21, the divided winding portion 11 and the winding frame 12 are set on the pallet 28. Thereafter, the pallet 28 is transported from the work setting device 21 to the frame setting unit 25 by the transport conveyor 22. Next, the work pressing mechanism 27 drives the frame setting section 25 and the work lifting mechanism 26 drives the work setting section 24 to press-fit the divided winding section 11 into the winding frame 12. While the divided winding portion 11 is press-fitted into the winding frame 12, the work setting device 21 sets the next divided winding portion 11 and the winding frame 12 on the pallet 28.
Therefore, since the step of press-fitting the divided winding portion 11 into the winding frame 12 and the step of setting the divided winding portion 11 and the winding frame 12 on the pallet 28 can be performed simultaneously, the cycle time can be shortened. .

  It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.

It is a top view of the stator manufactured by the press-fit apparatus which concerns on one Embodiment of this invention. It is sectional drawing of the stator which concerns on the said embodiment. It is a front view of the press-fit apparatus concerning the said embodiment. It is sectional drawing of the press injection apparatus which concerns on the said embodiment. It is a partial expanded sectional view of the press-fitting device according to the embodiment. It is a partial expanded sectional view which shows the state which began to press-fit the division | segmentation winding part to the flame | frame with the press-fitting apparatus which concerns on the said embodiment. It is a partial expanded sectional view which shows the state which press-fit the division | segmentation winding part to the flame | frame with the press-fitting apparatus which concerns on the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Press-fit apparatus 11 Divided winding part 12 Winding frame (frame)
21 Workset device 22 Conveyor (conveyance unit)
DESCRIPTION OF SYMBOLS 23 Press part 24 Work set part 25 Frame set part 27 Work press mechanism 28 Pallet 40 Energizing part 52A Press reference surface 53A Press reference surface 262 Lifting drive part

Claims (2)

A press-fitting device that press-fits a plurality of coil-shaped divided winding portions arranged in an annular shape into an annular frame,
The plurality of divided winding portions are placed on the frame in an annularly arranged state, and a pallet on which the frame is placed,
A pressing portion having a pressing reference surface facing the plurality of divided winding portions;
A work set part provided on the opposite side of the pressing reference surface of the pressing part across the plurality of divided winding parts;
A frame set portion provided on the opposite side of the pressing reference surface of the pressing portion across the plurality of divided winding portions;
An urging portion that is provided in the work set portion and urges the plurality of divided winding portions toward a pressing reference surface of the pressing portion;
By moving the frame setting portion toward the pressing portion, the frame setting portion pulls the frame away from the pallet, the frame is moved closer to the pressing reference surface of the pressing portion, and a plurality of pieces on the frame are arranged. A pressing drive part for press-fitting the divided winding part into the frame;
A press-fitting device comprising: a lift drive unit that lifts and lowers the work set unit. The press-fitting device according to claim 1,
A work setting device in which the divided winding portion and the frame are set on the pallet;
A transport unit that transports the pallet from the work set device to the frame set unit;
A press-fitting device further comprising:

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