JPH07143707A - Mounting apparatus of phase insulating sheet onto stator core - Google Patents

Abstract

PURPOSE:To automatically insert and mount the coupling part of a frame-shaped phase insulating sheet into and on a prescribed slot in a stator core. CONSTITUTION:A phase insulating sheet 11 which has been held in a stocker 200 is sucked and lifted by a sucking disk 112 for a movement device 100, and guide plates situated on both sides of the sucking disk 112 are lowered. The sheet 11 is curved. In this state, it is carried to the upper part of an insertion device 300. The coupling part of the sheet 11 is inserted into a prescribed gap in a blade 301, and the suction of the sucking disk 112 is released. Thereby, the sheet 11 which has been hooked to the prescribed gap in the blade 301 is pushed up by a stripper which has been arranged at the inside of the blade 301, and it is inserted into a prescribed slot in a stator core which has been fitted to, and arranged at, the upper end part of the blade 301.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for mounting an interphase insulating sheet on a stator core in which an insulating sheet can be automatically inserted between the coil ends of the stator core.

[0002]

2. Description of the Related Art In a stator core used in a rotary electric device such as a motor, a coil is inserted into a slot on the inner circumference thereof. The coil end protruding from the end surface of the stator is molded into a compact shape by a molding machine, and is tightly bound with a string or the like as necessary. In this case, in a 4-pole motor, a 6-pole motor or the like, since the coil end of the main coil and the coil end of the auxiliary coil are inserted so as to intersect with each other, a strong frictional force is applied to the contacted portion (phase). The coating of the enamel wire and the like was easily peeled off, which caused a short circuit.

Therefore, conventionally, an insulating sheet is inserted between the main coil and the auxiliary coil.
As the interphase insulating sheet, an annular shape is formed as a whole,
It has a corrugated convex portion and a concave portion on the outer peripheral portion, a linear or arc-shaped tape shape, or two thin connecting portions to be inserted into the slots, and has a frame shape as a whole. Things are known. Of these, those that are annular and tape-shaped, after inserting the main coil and the auxiliary coil,
It was inserted by inserting it between the phases of those coil ends. Also, in the case of a frame-shaped one, when the main coil is inserted, it is inserted into a predetermined slot in advance and the auxiliary coil is inserted in that state. Sandwiched between.

In the above, the frame-shaped interphase insulating sheet is inserted into the slot of the stator core in advance before inserting the auxiliary coil. Therefore, dielectric breakdown due to contact when inserting the auxiliary coil is also prevented, and the upper and lower end surfaces of the stator core are attached. Since the insulating sheets to be arranged are connected by the thin connecting portion inserted in the slot, there is an excellent advantage that they do not come off.

On the other hand, the interphase insulating sheet in the form of a tape can be attached only by inserting the main coil and the auxiliary coil and then inserting them into the coil ends thereof. For example, Japanese Patent Laid-Open No. 63-268453 by the applicant of the present invention. As shown, devices have been developed that can automatically insert interphase insulating sheets. However, since the tape-shaped interphase insulating sheet is inserted after inserting the main coil and the auxiliary coil, it is not possible to prevent dielectric breakdown at the time of inserting the coil, and the interphase insulating sheet is not formed in the subsequent molding process. There was a problem that it might come out.

[0006]

Although the frame-shaped interphase insulating sheet has the above-mentioned excellent advantages, it is necessary to insert the connecting portion of the sheet into a predetermined slot of the stator core. It was difficult to automate the process and it had to be done manually. For this reason,
It was a hindrance when trying to reduce the production cost by automating the production line as much as possible.

Therefore, an object of the present invention is to attach the interphase insulating sheet to the stator core by automatically inserting the connecting portion of the frame-shaped interphase insulating sheet into a predetermined slot of the stator core so that the interphase insulating sheet can be mounted. To provide.

[0008]

To achieve the above object, the present invention inserts an interphase insulating sheet having a shape in which a pair of sheet pieces are connected by two connecting portions into a predetermined slot of a stator core. In the interphase insulating sheet attaching device to be attached, a slider which is moved by a horizontally moving means supported above, an elevating base supported by the slider so as to be able to ascend and descend by a first elevating means, and a plurality of connecting and supporting means which are connected to the elevating base. The interphase insulating sheet moving device having a suction cup and at least a pair of left and right guide plates attached to the elevating base via the second elevating means so as to elevate and lower; The stocker, which is placed below the suction cup, holds the interphase insulating sheets by stacking them vertically, and the slider moves horizontally to a position different from the above. When I, disposed thereunder,
A plurality of finger-shaped blades arranged annularly corresponding to the inner teeth of the stator core, and arranged on the inner circumference of this blade,
And a device for inserting the interphase insulating sheet, which has a stripper that moves up and down by a third elevating unit, wherein the guide plates are curvedly held on the inner faces of the guide plates so that their inner surfaces coincide with predetermined gaps of the blades. The connecting portion of the interphase insulating sheet has a shape capable of being inserted into a predetermined gap of the blade, and the stripper has the connecting portion of the interphase insulating sheet inserted into the predetermined gap of the blade, the stator core. It is characterized by having push-in teeth to be pushed into corresponding slots.

[0009]

According to the interphase insulating sheet attaching device of the present invention,
When the slider is at the predetermined position, the elevating base is lowered by the first elevating means. As a result, the suction cup comes close to the uppermost surface of the interphase insulating sheet held by the stocker arranged below, and one suction sheet holds the uppermost interphase insulating sheet. In that state, the first elevating means raises the elevating base to its original position.

Next, at least a pair of left and right guide plates descends by the second elevating means, and the interphase insulating sheet is bent by being sandwiched between the inner surfaces of these guide plates. In that state, the slider is moved to a position different from the above by the horizontal moving means,
An insertion device is arranged below it.

Then, when the elevating base is lowered by the first elevating means, the connecting portion of the interphase insulating sheet curvedly held by the guide plate is inserted into a predetermined gap of the blade,
In that state, the suction of the suction cup is released to drop the interphase insulating sheet into the gap of the blade.

Further, the stator core is installed on the upper end of the blade, the stripper is pushed up by the third elevating means, and the connecting teeth of the interphase insulating sheet are inserted into the corresponding slots of the stator core by the pushing teeth of the stripper.
This principle is the same as the coil insertion device for the stator core. In this way, the frame-shaped interphase insulating sheet can be automatically attached to the stator core.

[0013]

1 to 8 show an embodiment of an interphase insulating sheet attaching device to a stator core according to the present invention.

As shown in FIG. 1, this interphase insulating sheet attaching device includes a moving device 100 for moving the interphase insulating sheet 11.
The stocker 200 of the interphase insulating sheet 11 and the insertion device 300 for inserting the interphase insulating sheet 11 into the stator core are configured.

The moving device 100 has a column 102 which is erected on a base 101, and a rodless cylinder 104 which is horizontally attached to the upper portion of the column 102. The rodless cylinder 104 is a slider 1 that horizontally moves between a position shown by a solid line and a position shown by an imaginary line in the figure.
Have 05. Two guide bars 106 vertically penetrate the slider 105, and an elevating base 107 formed of two plates is attached to the lower end of the guide bar 106. The lifting base 107 is moved up and down by a lifting base cylinder 108 attached to the slider 105. The lifting base cylinder 108 constitutes the first lifting means of the present invention. A support plate 110 is attached to the elevating base 107 via a connecting rod 109 extending downward,
A plurality of suction pipes 111 are attached to the support plate 110 in parallel downward. At the lower end of each suction tube 111,
A suction cup 112 is attached.

As shown in FIG. 2, a pair of left and right front guide cylinders 114, 115 are attached to the elevating base 107 on the side close to the insertion device 300 via a bracket 113 having a U-shaped cross section. There is. In FIG. 2, the lower half of the cylinder 115 is omitted. The actuating rods of these cylinders 114, 115 extend vertically downward and have a front guide plate 116 attached to their lower ends (however, in FIG.
Is omitted).

Further, a pair of left and right rear guide cylinders 117 and 118 are attached to the elevating base 107 on the side away from the insertion device 300 via the bracket 113. The operating rods of these cylinders 117 and 118 also extend vertically downward, and the rear guide plates 119 are attached to their lower ends. The front guide cylinders 114 and 115 and the rear guide cylinder 11 are also provided.
7 and 118 form the second elevating means in the present invention.

As shown in FIG. 3, the front guide plate 116 and the rear guide plate 119 are arranged so that the front guide plate 116 side is narrowed in a V shape when viewed from above. When the blade 301 of the insertion device 300 is inserted from above, the guide plate 116 causes the blade 3 to move.
A line that enters the inside of 01 and goes along the inner surfaces of the guide plates 116 and 119 is located in a predetermined gap of the blade 301.

FIG. 4 shows an example of the interphase insulating sheet 11. That is, the seat 11 includes a pair of seat pieces 13 and 14 arranged on both end surfaces of the stator core,
It has two thin connecting portions 15 and 15 for connecting these. The sheet 11 is attached to the stator core by inserting the connecting portions 15, 15 into predetermined slots of the stator core. The sheet pieces 13 and 14 do not have to have the same shape, and the sheet piece 13 located in the coil pushing-up direction at the time of coil insertion may be made smaller, as in the example of FIG. 4, for example. Also, this sheet 11
Is sucked and held by the suction cup 112 at the portions indicated by points A and B in the figure.

FIG. 5 shows the structure of the stocker 200 of the interphase insulating sheet 11. That is, the stocker 200 has a plurality of guide pins 201 that hold a large number of vertically stacked sheets 11. The guide pin 201 is erected on a base 203 installed on the frame 202. The sheet 11 is placed on a support plate 204, into which the guide pins 201 are inserted, is guided by the guide pins 201, and is supported so as to be able to move up and down.

The support plate 204 includes the frame 202 and the base 2.
The rack 205 is vertically connected to and supported by the upper end of the rack 205. The rack 205 meshes with a pinion gear (not shown) arranged in a gear case 206 attached to the lower surface of the frame 202, and the pinion gear is rotated by a motor 207 connected to the gear case 206.

Further, on the frame 202, columns 20 are provided on both sides of the sheet 11 held by the guide pins 201.
8 and 209 are erected, and these columns 208 and 2 are provided.
Optical sensor 21 including a pair of light emitting and receiving elements on the upper end of 09
0a and 210b are attached. This optical sensor 21
0a and 210b detect the position of the uppermost sheet 11, and when the height of the sheet 11 becomes low, the motor 207
A control signal is sent to the rack, and the pinion gear rotates to rotate the rack 2.
05 moves upward, and the support plate 204 moves up. Therefore, the uppermost sheet 11 is always maintained at the same height.

6 to 8 show the structure of the interphase insulating sheet 11 insertion device 300. The insertion device 300 is
It has a plurality of finger-shaped blades 301 arranged in an annular shape. A guide rod 302 having a shape like a wedge guide in a coil insertion jig is attached to the outside of the blade 301. The upper end of the blade 301 is inserted into the inner circumference of the stator core 12 and abuts against the inner teeth of the stator core 12. Further, the guide rod 302 has a length such that the upper end thereof is located on the lower end surface of the stator core 12.

Due to the structure described above, the front guide plate 116
When the rear guide plate 119 and the rear guide plate 119 descend, as shown in FIG. 6, the front guide plate 116 is inserted inside the blade 301 and is held on the inner surfaces of the front guide plate 116 and the rear guide plate 119. Connection part 15
However, it is adapted to be dropped into a predetermined gap of the blade 301.

As shown in FIG. 7, the blade 301 and the guide rod 302 are held at their base ends by a cylindrical holder 305 rotatably installed in the frame 303 via a bearing 304. This holder 305
A mechanism (not shown) rotates together with the blade 301 and the guide rod 302 by a predetermined angle. A guide cylinder 307 is disposed on the inner circumference of the holder 305 and at the base inner circumference of the blade 301 via a sleeve 306, and the stripper drive shaft 3 is disposed in the guide cylinder 307.
08 has been inserted.

At the upper end of the stripper drive shaft 308, FIG.
A stripper 309 having a shape as shown in is attached. The stripper 309 has a plurality of pushing teeth 310 for introducing the connecting portion 15 of the interphase insulating sheet 11 into a predetermined slot of the stator core 12. By the pushing teeth 310, the connecting portion 15 of the seat 11 is inserted so as to be pushed inward of the slot of the stator core 12. The guide rod 302 serves to guide the pushing teeth 310 of the stripper 309.

The lower end of the guide cylinder 307 is supported by the lower frame 311. Further, the lower end portion of the drive shaft 308 extends further below the frame 311, and is connected to an elevating frame 312 that moves up and down by a drive mechanism (not shown). The drive shaft 308 and the elevating frame 312 form the third elevating means in the present invention. Therefore, the lifting frame 312 is indicated by the arrow C in FIG.
As shown by, the stripper 309 rises via the drive shaft 308, and the connecting portion 15 of the seat 11 hooked in the predetermined gap of the blade 301 can be pushed into the predetermined slot of the stator core 12. This principle is exactly the same as the principle of the coil insertion device for the stator core.

The reason why the holder 305 is rotated at a predetermined angle together with the blade 301 and the guide rod 302 is as follows.
In the case of this embodiment, since the three sheets 11 in total are dropped into the predetermined gap of the blade 301, the holder 305 is set to one.
This is because the operation of inserting the sheet 11 by the guide plates 116 and 119 is repeated three times by rotating the sheet by 20 degrees. The three sheets 11 hooked on the blade 301 in this way are simultaneously inserted into the slots of the stator core 12 by one push-up of the stripper 309.

Next, the mounting operation of the interphase insulating sheet 11 by this interphase insulating sheet mounting apparatus will be described.
In the state shown in FIG. 1, first, the lifting base cylinder 108.
By the operation of, the elevating base 107 descends, and the suction pipe 111 and the suction cup 112 descend together with it. When the suction cup 112 approaches the uppermost sheet 11 of the stocker 200, suction is performed and one sheet 11 is adsorbed by the suction cup 112. After that, the operation of the cylinder 108 causes the lifting base 1 to move.
07 is raised to its original position and the seat 11 is lifted.

In this state, as shown in FIG. 2, the front guide cylinders 114 and 115 and the rear guide cylinders 117 and 118 are actuated to lower the front guide plate 116 and the rear guide plate 119, and the suction plate 112 is sucked. The held sheet 11 is curved as shown.

Further, the operation of the rodless cylinder 104 causes the slider 105 to move horizontally to the position shown by the imaginary line in FIG. In this state, the lifting base 107 is lowered again by the operation of the lifting base cylinder 108. As a result, as shown in FIG. 6, the connecting portion 15 of the sheet 11 held by the suction cup 112 and curved by the guide plates 116 and 119 is inserted into the predetermined gap of the blade 301 of the insertion device 300. Thus, the sheet 11 is attached to the blade 30.
1 can be engaged in a predetermined gap.

In this embodiment, the holder 305 of the blade 301 is rotated by 120 degrees and the above operation is repeated three times to hook the three sheets 11 on the blade 301. Thus, the stripper 309 shown in FIG. 8 is provided in the gap of the blade 301 in which the connecting portion 15 of the sheet 11 is inserted.
The push-in teeth 310 are arranged.

Then, as shown in FIG.
The stator core 12 in which the main coil has been inserted is fitted to the outer periphery of the upper end portion of 1, and the elevating frame 312 is raised to push up the stripper 309. Then stripper 3
The pushing tooth 310 of 09 causes the connecting portion 15 of the seat 11 to be pushed into the corresponding slot of the stator core 12. In this way, the connecting portion 15 of the seat 11 can be inserted into the predetermined slot of the stator core 12 and the seat 11 can be attached to the stator core 12.

After that, when the auxiliary coil is inserted according to the conventional method, the sheet pieces 13 and 14 located on both end surfaces of the stator core 12 of the sheet 11 are sandwiched between the coil ends of the main coil and the auxiliary coil, and the interphase insulation is achieved. Is done.

[0035]

As described above, according to the present invention,
It is possible to automate the work of inserting the frame-shaped interphase insulating sheet into a predetermined slot of the stator core and mounting it.
It contributes to the reduction of production cost by automating the coil forming process line to the stator core.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a device for attaching an interphase insulating sheet to a stator core according to the present invention.

FIG. 2 is a partially enlarged view showing a suction cup and a guide plate attaching portion of the in-phase insulating sheet attaching device.

FIG. 3 is a plan view showing an arrangement of the guide plate in relation to a blade.

FIG. 4 is a plan view showing an example of an interphase insulating sheet processed by an inphase insulating sheet attaching device.

FIG. 5 is a side view showing a structure of a stocker of an interphase insulating sheet in the same phase insulating sheet attaching apparatus.

FIG. 6 is a perspective view showing a state where the interphase insulating sheet held by the guide plate is dropped into the gap of the blade in the same phase insulating sheet attaching device.

FIG. 7 is a cross-sectional view showing an interphase insulating sheet inserting device in the interphase insulating sheet attaching device.

FIG. 8 is a plan view showing the shape of a stripper of the insertion device.

[Explanation of symbols]

 11 Interphase Insulation Sheet 12 Stator Cores 13 and 14 Sheet Pieces 15 Connection Part 100 Interphase Insulation Sheet Moving Device 104 Rodless Cylinder 105 Slider 107 Elevating Base 108 Elevating Base Cylinder 112 Sucker 114, 115 Front Guide Cylinder 116 Front Guide Plate 117, 118 Rear Guide Cylinder 119 Rear Guide Plate 200 Interphase Insulation Sheet Stocker 300 Interphase Insulation Sheet Insertion Device 301 Blade 302 Guide Rod 305 Holder 308 Drive Shaft 309 Stripper 312 Lifting Frame

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[Procedure amendment]

[Submission date] December 24, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

Due to the structure described above, the front guide plate 116
As the rear guide plate 119 and the rear guide plate 119 descend, the front guide plate 116 is inserted inside the blade 301 and held on the inner surfaces of the front guide plate 116 and the rear guide plate 119, as shown in FIG. 1 connecting part 15
However, it is adapted to be dropped into a predetermined gap of the blade 301.

Claims (1)

[Claims] 1. An interphase insulating sheet (15) having a shape in which a pair of sheet pieces (13, 14) are connected by two connecting portions (15) is inserted into a predetermined slot of a stator core (12) and attached. In an interphase insulating sheet mounting device, a slider (105) which is moved by a horizontally moving means (104) supported above, and an elevating base () which is supported by the slider (105) so as to be able to ascend and descend by a first elevating means (108). 107), a plurality of suction cups (112) connected to and supported by the elevating base (107), and second elevating means (114, 115, 117) on the elevating base (107).
118) a moving device (100) for the interphase insulating sheet (11) having at least a pair of left and right guide plates (116, 119) mounted so as to be able to move up and down, and the slider (105) at a predetermined position. The stocker (20) arranged below the sucker (112) and holding the interphase insulating sheets (11) vertically stacked.
0) and the slider (105) is horizontally moved to a position different from the above, the stator core (1
2) A plurality of finger-shaped blades (301) arranged in an annular shape corresponding to the internal teeth, and arranged on the inner circumference of the blades (301) and moved up and down by the third lifting means (308, 312). A stripper (309) for removing the interphase insulating sheet (11), and the guide plates (116, 119) have inner surfaces in a predetermined gap of the blade (301). The stripper (309) has a shape that allows the connecting portion (105) of the interphase insulating sheet (11) that is matched and curvedly held on the inner surface thereof to be inserted into a predetermined gap of the blade (301). The blade (301)
The interphase insulating sheet (11) inserted in the predetermined gap of the
The connecting portion (105) of the stator core (12)
The interphase insulating sheet attaching device to the stator core, which has push-in teeth (310) to be pushed into corresponding slots of the.