JPH07222411A - Device for mounting and dismounting pallet for stator core - Google Patents

Abstract

PURPOSE:To provide a device for mounting and dismounting a pallet for a stator core which requires no changing of the height of a pallet according to the lamination thickness of a stator core even when the lamination thickness of the stator core is changed and which allows the reduction in the number of processes. CONSTITUTION:An actuator for stroke adjustment 12 and an actuator 13 for raising and lowering a pallet 13 are connected in tandem and a spacer for controlling a space 15 which controls the back stroke of a plunger 12a is exchangeably mounted on the plunger 12a of the actuator for stroke adjustment 12. The spacer for controlling a space 15 corresponds to the lamination thickness of a stator core 1 which is supported between a bottom plate 8 and a top plate 9 of a pallet 3. The plunger 12a of the actuator for stroke adjustment 12 is moved back, a plunger 13b of the actuator for raising and lowering a pallet 13 being projecting, the spacer for controlling a space 15 is caught on a flunge 11b and thereby the space between the two plates 8, 9 corresponds to the lamination thickness of the stator core 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet attaching / detaching device for a stator core, which is used for assembling a stator core used in a rotary electric machine such as a motor into a pallet before moving to a coil insertion stage, or for removing the pallet from the stator core after completion of coil insertion. Regarding

[0002]

2. Description of the Related Art Generally, a slot of a stator core used in a rotary electric machine such as a motor and a coil to be inserted into the slot are insulated by slot insulating paper, and the cuffs of the slot insulating paper are cut from both ends of the stator core. Is protruding.

When the coil is inserted into the slot of the stator core, the cuffs projecting from both end surfaces of the stator core are easily crushed or damaged.

Therefore, the applicant of the present invention provides a pallet for mounting and transferring the stator core in a transfer device or the like for inserting the coil into the stator core, by providing a cuffer for supporting the outside of the cuff, and crushing the cuff at the time of inserting the coil. Prevented damage.

This pallet is composed of a seat plate fixedly mounted on the table and a top plate opposed to the seat plate. After positioning one end surface of the stator core on the seat plate,
A top plate is arranged on the other end surface of the stator core in a predetermined position, and then a cuff is horizontally projected from the circumferential direction of the both plates to support the outside of the cuff, and in this state, the stator core is coiled. Transfer to the insertion stage.

Then, after inserting a coil into the stator core in a predetermined manner, the stator core is taken out from the pallet and transferred to the next processing step, while the pallet is returned to the first stage.

By the way, the cuffs for supporting the cuffs of the slot insulating paper projecting from the stator core support the cuffs by predetermined positioning of the stator core on the pallet and then projecting it horizontally. Therefore, it is necessary to make the gap between the cuffs protruding from the both plates correspond in advance to the product thickness between both end surfaces of the stator core.

[0008]

Conventionally, the gap between the two plates has been set by a spacer or a collar. However, the product thickness of the stator core is determined by the rated output of the rotating electric machine to be used, so when mass-producing several types of stators, the product thickness of the stator cores for all pallets must be the same for each pallet produced. The spacer or collar of the corresponding height must be replaced, which increases the number of setup steps and reduces the work efficiency.

Therefore, an object of the present invention is to easily cope with a change in the laminated thickness of the stator core, facilitate the setup, and reduce the production cost. To provide.

[0010]

In order to achieve the above object, the present invention provides a table with a seat plate, a top plate facing the seat plate, and ring gears provided on the outer circumferences of the two plates. Before transferring the pallet in which the cuffs connected to each other via a cam are arranged to be radially retractable in the circumferential direction, before transferring to the coil insertion stage, between the seat plate and the top plate of the pallet. While mounting the stator core, the outside of the cuffs of the slot insulating paper projecting from both end faces of the stator core is supported by the cuffs, or after the coil insertion is completed, the space between the seat plate and the top plate of the pallet is set. A pallet attachment / detachment device for a stator core that removes the stator core and retracts the cuff, and is connected to an elevating actuator and holds the top plate of the pallet to lift and lower the pallet. A holder, a rotary drive unit that engages with the ring gears provided on both plates of the pallet to move the cuffer forward and backward, and a plunger for a stroke adjusting actuator that vertically hangs the lifting actuator. A gap adjusting spacer is attached to the plunger of the stroke adjusting actuator so as to be regulated so that the gap between the cuffs provided on the both plates when the plunger is retracted is equal to the product thickness of the stator core. It is characterized by having done.

[0011]

In the above structure, a spacer corresponding to the product thickness of the stator core transferred to the coil insertion stage is attached to the plunger of the stroke adjusting actuator to regulate the back stroke of the plunger.

When assembling the stator core to the pallet, first, the top plate opposite to the seat plate of the pallet is gripped by the holder that is connected to the lifting actuator, and the lifting actuator and the lifting actuator are held. The plunger with the stroke adjusting actuator for vertically arranging the actuator is retracted together to raise the holder, and a sufficient gap is formed between the seat plate and the top plate for loosely inserting the stator core. The stator core is loosely inserted from the side, and one end face of this stator core is placed in the center of the seat plate.

Next, the plunger of the stroke adjusting actuator is kept in the retracted state, and only the plunger of the lifting actuator is projected. Then, the holder connected to the plunger of the elevating actuator descends, and the top plate held by the holder faces a position close to the other end surface of the stator core.

When the ring gears provided on the outer circumferences of the both plates are rotated by the rotary drive unit, the cuffs connected to the ring gears via the cams project in the horizontal direction and the slot insulation projecting from both end faces of the stator core. Support the outside of the paper cuffs.

After that, the holding of the top plate is released, and the pallet on which the stator core is placed is transferred to the next coil insertion stage.

Then, after inserting the coil into the stator core in a predetermined manner, the top plate is gripped again, the cuffer is moved to the retracted position by the rotation driving unit, and the stator core is removed from the pallet.

[0017]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 schematically shows a process of inserting the coil 2 into the stator core 1 using a transfer device or the like, and conveys the pallet 3 to the pallet mounting stage A → the coil inserting stage B → the pallet releasing stage C. The pallet 3 is returned from the pallet removing stage C to the pallet mounting stage A.

A pallet attaching / detaching device 11 is installed on the pallet mounting stage A and the pallet removing stage C. A plurality of coil insertion stages B may be provided between the pallet mounting stage A and the pallet removal stage C.

As shown in FIG. 5, the stator core 1
In the case of, a steel plate having a predetermined plate thickness is punched out, and the steel plates are laminated to form a laminated thickness t. The product thickness t is determined according to the rating of the rotating electric device such as a built-in motor, and is different for each lot. Further, referring also to FIG. 7, slots 1a for inserting the coils 2 are punched out at equal intervals on the inner circumference of the stator core 1. Further, a slot insulating paper 5 is attached to each slot 1a, and cuffs 5a of the slot insulating paper 5 are projected from both end surfaces of the stator core 1.

On the other hand, as shown in FIG. 2, the pallet 3 on which the stator core 1 is placed and transferred is a table 7
And a top plate 9 provided on the table 7 and a top plate 9 opposed to the seat plate 8. When the stator core 1 is not placed, the top plate 9 protrudes from the opposing surfaces of the two plates 8 and 9. The plates 8 and 9 are positioned and fixed by fitting the abutting portions 8a and 9a while maintaining a predetermined gap.

Further, as shown in FIG.
A concave portion 7a is formed in the lower portion of the column 11, which will be described later, for escaping the base frame 11d. further,
A hole (not shown) slightly smaller than the diameter of the stator core 1 and larger than the outer circumference of the slot 1a is bored in the center of the seat plate 8, while the center of the top plate 9 is An insertion hole 1b for inserting the stator core 1 is formed.

A plurality of cuffer guides 8c, 9c are formed on the plates 8, 9 at equal intervals from the circumferential direction toward the center, and the cuffers 8d, 9d are attached to the cuffer guides 8c, 9c. There is. The above cuff guide 8
c and 9c are the cuffers 8d and 9d, respectively.
Are arranged at positions facing each other between the adjacent slots 1a. Further, the tips of the cuffs 8d and 9d are formed in a shape along the outer shape of the cuff 5a.

Ring gears 8e and 9e are provided on the outer circumferences of the plates 8 and 9, respectively.
The cam groove 8 is formed in the disks 8f and 9f that rotate together with 9e.
g, 9g are formed, and follower pins 8h, 9 are planted in the cam grooves 8g, 9g at the base ends of the cuffers 8d, 9d.
h is involved. In the state of FIG. 7, when the ring gears 8e and 9e are rotated counterclockwise, the cuffers 8d and 9d are engaged with the cam grooves 8g and 9g and the follower pins 8h and 9h, and as shown in FIG. When projected and rotated in the opposite direction, the cuffs 8d, 9d
Moves to the retracted position as shown in FIG.

On the other hand, as shown in FIG. 3, on the upper flange 11b of the column 11a of the pallet attaching / detaching device 11,
A stroke adjusting actuator 12 is vertically provided, and a rear end portion 13a of the elevating actuator 13 is connected to a plunger 12a directed downward of the stroke adjusting actuator 12. A spacer holder 14 is attached to the rear end portion 13a.
A spacer 15 for adjusting the gap is mounted in a replaceable manner.

The height h of the gap adjusting spacer 15 is set corresponding to the product thickness t of the stator core 1. That is, as shown in FIG. 6, when the plunger 12a of the stroke adjusting actuator 12 retracts, the gap adjusting spacer 15 contacts the upper flange 11b of the column 11a to regulate the back stroke of the plunger 12a. Then, the gap between the cuffers 8d and 9d protruding horizontally from both the plates 8 and 9 of the pallet 3 is adjusted to the product thickness t of the stator core 1.

Further, the holder guide 1 is attached to the column 11a.
1c is formed, and the holder 16 is attached to the holder guide 11c.
The slider portion 16a is supported slidably in the vertical direction. Further, a flange 16b is bent and formed on the upper portion of the slider portion 16a, and the plunger 13b of the lifting actuator 13 is connected to the flange 16b.

In addition, the slider 16a is provided with a mount 16c.
Is fixedly mounted, and the high rotor 17 is fixedly mounted on the frame 16c. Furthermore, the spindle 1 of this high rotor 17
The top plate drive gear 18 pivotally mounted on the 7a
It is rotatably supported by c and faces downward. Further, a seat plate drive gear 20 rotatably supported on the top plate drive gear 18 via a spline 19 to a base frame 11d fixed to the lower portion of the column 11a.
Are lined up. The high rotor 17, the drive gears 18 and 20, and the spline 19 are used to rotate the rotary drive unit 17A.
Is configured.

Further, the mount 16c is provided with a grip portion 21 for gripping the top plate 9 of the pallet 3 by an actuator (not shown) and positioning and fixing the top plate 9 by the positioning pins 21a.

As shown in FIG. 3, the drive gears 18 and 19 when the plungers 12a and 13b of the actuators 12 and 13 project in the projecting direction, and the plates 9 of the pallet 3 in the state shown in FIG. , 8 ring gear 8e,
The intervals between 9e are set to be equal.

Reference numeral 22 in FIGS. 11 to 13 is a loader for extracting the stator core 1 after the coil insertion is completed from the pallet 3, and by expanding the claw 22a provided at the tip of the loader 22, the stator core 1 is opened. The loader 22 is hooked on the inner circumference of the.

Next, the operation of the embodiment having the above structure will be described. When the stator core 1 is conveyed to the coil insertion stage C using a transfer device or the like, first,
At the pallet mounting stage A, the stator core 1 is set on the pallet 3.

As shown in FIG. 2, the pallet 3 has its seat plate 8 and top plate 9 aligned on the table 7 in a predetermined position by fitting the abutting portions 8a, 9a from the pallet releasing stage C. The pallet 3 has been returned in the state, and is sent to the pallet attaching / detaching device 11 installed on the pallet mounting stage A.

As shown in FIG. 3, in the pallet attaching / detaching device 11 in the initial state, the plungers 12a and 13b of both actuators 12 and 13 are both projected, and the grip 21 provided on the pedestal 16c is open. Has been done.
Further, the high rotor 1 provided on the mount 16c at this time
The distance between the drive gears 18 and 19 connected to the gear 7 is the ring gear 8 provided on the seat plate 8 and the top plate 9 of the pallet 3.
Since the pallet 3 is set in the pallet attaching / detaching device 11, the ring gears 8e and 9e are meshed with the drive gears 20 and 18, and at the same time, the top plate is set. One end of 9 is loosely inserted in the grip portion 21.

Then, as shown in FIG. 4, first, the grip portion 21 grips the top plate 9, and at the same time, the positioning pin 2 is held.
The top plate 9 is positioned and fixed by 1a.

Thereafter, as shown in FIG. 5, the plungers 12a and 13b of the actuators 12 and 13 are both retracted to raise the top plate 9, and the space between the top plate 9 and the seat plate 8 is opened. The stator core 1 is inserted from the side by a loader or a robot, and one end surface of the stator core 1 is placed on the seat plate 8.

Next, as shown in FIG. 6, while the plunger 12a of the stroke adjusting actuator 12 is maintained in the retracted state, the lifting actuator 1 is moved.
Only the plunger 13b of No. 3 is projected downward. Plunger 12a of the stroke adjusting actuator 12
The back stroke is restricted by the gap adjusting spacer 15, and the gap adjusting spacer 15 is set corresponding to the product thickness t of the stator core 1.
By projecting the plunger 13b of the lifting actuator 13, the top plate 9 is exposed to a position substantially horizontal to the other end surface of the stator core 1.

Thereafter, the top rotor drive gear 18 connected to the high rotor 17 and the seat top drive gear 20 connected to the top rotor drive gear 18 via the spline 19 are installed by the high rotor 17 installed on the frame 16c. , Fig. 7
When rotated in the clockwise direction, both drive gears 1
Ring gears 9e, 8e provided on the outer peripheries of both plates 9, 8 meshing with 8, 8 respectively rotate in opposite directions, and disks 9f, 8f rotate integrally with the ring gears 9e, 8e.
The cam grooves 9g, 8g provided in the cuffs 9d, 8d are inserted into the cuffers 9d, 8d through the follower pins 9h, 8h, and the cuffs 9d, 8d in the retracted position are guided along the cuffer guides 9c, 8c in the center direction of the plates 9, 8. Extrude into.

Then, the cuffs 9d and 8d project horizontally from both end surfaces of the stator core 1 as shown in FIG.
As shown in FIG. 5, the tips of the cuffs 9d and 8d are brought into contact with the outsides of the cuffs 5a protruding from both end surfaces of the stator core 1 of the slot insulating paper 5 mounted in the slots 1a of the stator core 1, and the cuffs 5a Is the above Kafsa 9
It is supported by d and 8d.

Then, in this state, the grip of the grip portion 21 of the pallet attaching / detaching device 11 with respect to the top plate 9 is released, and the stator core 1 is set in the pallet 3 in a predetermined manner, to the next coil insertion stage B. Then, the coil 2 is inserted into the slot 1a of the stator core 1 here.

The slot 1 of the stator core 1
When the insertion of the coil 2 into the a is completed, the pallet 3 on which the stator core 1 is set is transferred to the next pallet releasing stage C.

In the pallet removing stage C, as shown in FIG. 9, the plunger 12a of the stroke adjusting actuator 12 of the pallet attaching / detaching device 11 is in the retracted state, while the plunger 13b of the elevating actuator 13 is moved downward. Standing by in a protruding state.

The stroke adjusting actuator 12
The gap adjusting spacer 15 for restricting the back stroke of the plunger 12a of FIG. 6 is paired with the gap adjusting spacer 15 mounted by the pallet attaching / detaching device 11 installed on the pallet mounting stage A, and the mount 16c is shown in FIG. At the same height.

Therefore, when the pallet 3 is set on the pallet attaching / detaching device 11, the ring gear 8 of both plates 8 and 9 is set.
e and 9e mesh with both drive gears 20 and 18, respectively, and the top plate 9 faces the grip portion 21. And
The top plate 9 is gripped by the grip portion 21, and the high rotor 1
7 is rotated in the direction opposite to the pallet mounting stage A (counterclockwise direction in FIG. 8) to return the cuffers 8d and 9d to the retracted position.

Then, as shown in FIG. 10, the plunger 12a of the stroke adjusting actuator 12 is projected. The top plate 9 is lowered, and the abutting portion 9a of the top plate 9 is placed on the abutting portion 8a of the seat plate 8.

Thereafter, as shown in FIG. 11, the loader 22 is lowered from above, and as shown in FIG. 12, the tip of the loader 22 is inserted into the stator core 1 and the pawl 22a provided at the tip of the loader 22 is inserted. Is expanded to hold the inside of the stator core 1, and as shown in FIG. 13, the stator core 1 is extracted upward from the pallet 3 and conveyed to the next processing step.

On the other hand, the pallet 3 is returned to the pallet mounting stage A. By the way, when the product thickness t of the stator core 1 fed to the production line is changed, the stator core 1 is attached to the plunger 12a of the stroke adjusting actuator 12 of the pallet attaching / detaching device 11 installed on the pallet mounting stage A and the pallet detaching stage C. The gap adjusting spacer 15 is replaced with the gap adjusting spacer 15 having a height h corresponding to the newly stacked stator core 1 stacked thickness t.

Even if the product thickness t of the stator core 1 is changed,
Since only the gap adjusting spacer 15 needs to be replaced, the number of setup steps is reduced and the working efficiency is improved.

[0048]

As described above, according to the present invention,
By mounting the stator core on the pallet, or removing the stator core from the pallet, by replacing the spacer for spacer adjustment mounted on the plunger of the stroke adjusting actuator of the pallet attaching / detaching device, the gap between the seat plate and the top plate of the pallet is replaced. Is adapted to correspond to the laminated thickness of the stator core mounted in this gap, so that even if the laminated thickness of the stator core is changed, it can be easily accommodated.
The number of setup steps can be reduced, and the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a schematic view showing a step of inserting a coil into a stator core that is transferred by a pallet.

FIG. 2 is a front view of a pallet.

FIG. 3 is a partial cross-sectional side view of the pallet attaching / detaching device when the pallet is set.

FIG. 4 is a partial cross-sectional side view of the pallet attaching / detaching device when the top plate of the pallet is gripped.

FIG. 5 is a partial cross-sectional side view of the pallet attaching / detaching device when the status core is attached between the seat plate and the top plate of the pallet.

FIG. 6 is a partial sectional side view of the pallet attaching / detaching device in which a status core is mounted between the seat plate and the top plate of the pallet.

FIG. 7: FIG. 6 when the cuffs of the pallet are in the retracted position
FIG.

FIG. 8 is a plan view of a main part of FIG. 6 in a state where the cuffs of the pallet project to support the cuffs of the slot insulating paper.

FIG. 9 is a partial cross-sectional side view of a pallet attaching / detaching device in which a pallet for holding a stator core that has completed coil insertion is set.

FIG. 10 is a partial cross-sectional side view of a pallet attaching / detaching device that supports a pallet in which a stator core having coils inserted therein is relatively projected from the celestial body.

11 is a partial cross-sectional side view of the pallet attaching / detaching device when the loader faces the pallet in the state of FIG.

12 is a partial cross-sectional side view of the pallet attaching / detaching device when the loader is inserted through the stator core placed on the pallet in the state of FIG.

13 is a partial cross-sectional side view of the pallet attaching / detaching device when the stator core is removed from the pallet in the state of FIG.

[Explanation of reference numerals] 1 ... Stator core 3 ... Pallet 5 ... Slot insulating paper 5a ... Cuff 7 ... Table 8 ... Seat plate 8d, 9d ... Cuffer 8e, 9e ... Ring gear 8g, 9g ... Cam 9 ... Top plate 11 ... Pallet attaching / detaching device 12 ... Stroke adjusting actuators 12a, 13b ... Plunger 13 ... Elevating actuator 15 ... Gap adjusting spacer 16c ... Holder 17A ... Rotation drive unit B ... Coil insertion stage t ... Stacked thickness

Claims (1)

[Claims] 1. A table is provided with a seat plate, a top plate is provided opposite to the table, ring gears are provided on the outer peripheries of both plates, and a cuffer connected to the ring gear via a cam is radially arranged in the circumferential direction. Before transferring the pallet arranged so as to be retractable to the coil insertion stage, a stator core is mounted between the seat plate and the top plate of the pallet, and a slot protruding from both end faces of the stator core. The outside of the cuffs of insulating paper is supported by the cuffs, or after the coil insertion is completed, the stator core is removed from between the seat plate and the top plate of the pallet, and the pallet attachment / detachment for the stator cores that retracts the cuffs is performed. A device that is connected to an elevating actuator and that holds the top plate of the pallet and is capable of moving up and down; A rotary drive unit for engaging and disengaging the cuffer to move the cuffer forward and backward, and a plunger for a stroke adjusting actuator that vertically extends the lifting actuator, and further retracts the plunger to the plunger of the stroke adjusting actuator. A pallet attaching / detaching device for a stator core, wherein a spacer for adjusting a gap, which restricts a gap between the cuffs provided on the both plates when it is made to be equal to a laminated thickness of the stator core, is exchangeably attached.