JP3437646B2 - Method and apparatus for manufacturing iron plate with spacing for rotating electric machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron with a space piece for a rotating electric machine.
The present invention relates to a plate manufacturing method and a manufacturing apparatus thereof.

[0002]

2. Description of the Related Art Conventionally, in a stator and a rotor core of a rotating electric machine, thin iron plates are laminated to a predetermined thickness, and iron plates with a spacing piece are formed at predetermined intervals to form a gap for cooling the laminated iron plates.
Then , it is fastened with a bracket, and the interval piece is fixed by spot welding to the gap part of the thin iron plate so as not to fall off due to magnetic vibration, inertial force and the like.

Such an iron plate with a space piece is formed by arranging the I-shaped space pieces 2 one by one on a thin iron plate 1 as shown in FIGS. 6 to 8 and spot welding with the iron core manufacturing apparatus shown in FIG. Or, it was manufactured by hand such as inserting a spacing piece in a positioning jig and spot welding one by one with an iron core manufacturing device.

[0004]

However, in the conventional method of manufacturing the iron plate with the interval piece for the rotary electric machine as described above, the interval piece must be vertically arranged and welded at a predetermined position of the thin iron plate. For this reason, the vibrating alignment device is used to accurately arrange the elongated spacing pieces.
Since it is not possible to stand up with just this vibrating alignment device, I am working with a positioning jig.
It was necessary to prepare many kinds of jigs. Further, if two points are to be spot-welded at the same time, a high skill and a long time are required for the adjustment in order to equalize the pressure applied to the electrodes of the welding machine, so that there is a problem that the productivity is remarkably reduced.

The present invention has been made to solve the above problems, and an object thereof is to provide a method of manufacturing an iron plate with a spacing piece of a rotating electric machine having high productivity and a manufacturing apparatus thereof.

[0006]

In order to achieve the above object, a method of manufacturing an iron plate with a spacing piece of a rotating electric machine according to claim 1 of the present invention is a thin iron plate with a two-point spotlight by an automatic positioning device.
After positioning so as to contact one of the electrodes of the elbow device, a large number of I-shaped spacing pieces cut in advance to a predetermined length are put into a hopper, and a pair of wire brush rolls provided in the opening of the hopper are rotated. The I-shaped spacing pieces aligned from the hopper by a standing plate in advance.
One of the upright I-shaped spacing pieces is pushed by the extrusion mechanism to
Provided integrally with the other electrode end of the pot welder
I-shape inserted into the gripping mechanism part and inserted into the gripping mechanism part
The spacing piece is the thin iron plate prepositioned and the other
The two-point spot weld device after being sandwiched by the electrodes
Is operated to weld the I-shaped spacing piece to the thin iron plate to form a passage for the cooling medium.

According to a second aspect of the present invention, there is provided an apparatus for manufacturing an iron plate with a spacing piece for a rotary electric machine, an automatic positioning device for positioning a thin iron sheet, a hopper capable of inserting a large number of I-shaped spacing pieces, and an opening portion of the hopper. a pair of the wire brush roll, aligned consisting guide plate and standing plate for the one by one the I-shaped spacing pieces falling aligned with the rotation of the wire roll brush from the opening of the hopper device provided, the I-shaped interval
Two-point spot wafer for welding and fixing pieces to the thin iron plate
Field device and the I-shaped spacing piece located at the extrusion port of the guide plate are transferred to the gripping mechanism part of the two-point spot weld device.
It is characterized in that it is composed of an extruding mechanism part for moving and a control device for controlling the two-point spot weld device.

[0008]

According to the present invention, when a plurality of spacing pieces are put into the hopper and the spacing piece aligning device is activated, the pair of wire brush rolls rotate in the direction opposite to the dropping direction, and the spacing pieces in the hopper are moved. Stir. The spacing piece that stood up by this,
Although it falls from the opening corresponding to the width and is aligned by the guide plate, it is pushed by the subsequent spacing piece, and the alignment is further parallel to the guide plate surface and drops from the guide plate surface to the insertion port. The dropped bottom interval piece is extruded and inserted into the electrode with the gripping mechanism of the two-point spot weld device, and then the thin iron plate positioned by the automatic positioning device is lowered and clamped under pressure, and spot welding is performed to make it thin. Fix the spacing piece to the iron plate. After that, the electrode with the upper gripping mechanism ascends to release the interval piece, return to the insertion position, perform the next insertion, and wait for a command from the automatic positioning device. The automatic positioning device positions the thin iron plate at the next position and
Weld by issuing a welding command to the spot welding equipment.
In this way, a rotating electric machine made of an iron plate with a space piece to which a predetermined number of space pieces are fixed in a repeated manner is manufactured.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a side view of an iron plate manufacturing apparatus with a spacing piece of a rotary electric machine according to the present invention, and FIG. 2 is a sectional view of a hopper portion of FIG.
1 is a side view of the spacing piece aligning device of FIG. 1, FIG. 4 is a front view in which a part of the spacing piece aligning device of FIG. 1 is cut away, and FIG. 5 is a partial cross-sectional view of a gripping mechanism portion of a two-point spot weld device.

As shown in FIGS. 1 to 5, the hopper 3 having an inclined surface is supported by support plates 6 and 6'on both sides in the longitudinal direction, and has an opening at its bottom. A pair of wire brush rolls 4 and 4 are arranged to face each other with a space in-between with this opening portion interposed therebetween. The distance between one wire brush roll 4 (right wire brush roll in the figure) and the guide plate 5 is slightly larger than the width of the I-shaped space piece 2, and the guide plate 5 can easily move the space piece 2 that has fallen. Moreover, the shape is such that a horizontal surface can be formed. Further, a movable partition plate 8 is provided so that the spacing piece 2 can be positioned in the longitudinal direction. The shaft 7 is rotatably mounted by tightening the wire brush roll 4 from both sides and fitting the support plates 6 and 6'to bearings (not shown).
Further, the guide plate 5 is arranged such that the space between the guide plate 5 and the upright plate 9 is slightly larger than the width of the space piece 2 and is parallel to the vertical direction to form a pocket.

The extrusion port 10 for pushing out the spacing piece 2 is larger than the height width of the spacing piece 2 so that the spacing piece 2 can easily pass therethrough. An upper limit sensor 1 is provided in each of the upper and lower parts of the pocket formed by the guide plate 5 and the upright plate 9.
2. A lower limit sensor 11 is provided, and the presence or absence of the spacing piece 2 is detected by both of these sensors. The motor 13 with a reducer, the drive shaft end of which is fitted in the shaft hole provided in the shaft 7, is coupled via a key (not shown), and the motor mounting bracket 14
Thus, the motor 13 is attached to one surface by a screw (not shown) and is fastened to the support plate 6. The support plate 6 is supported by the support sliding surface of the support bracket 15. Hanging metal fitting 17
One end of one is attached to the fixed side of the slide unit 16, and the other end is fastened and fixed to the support bracket 15. The slide unit 16 is structured such that the moving portion side is fastened to the support plate 6 and the gap pieces 2 having different lengths can be moved when necessary.

The two-point spot weld device 18 is equipped with an upper electrode 20 which is vertically moved by an air cylinder 19 which is operated by a solenoid valve (not shown), and an electrode mounting seat 21 below the upper electrode 20. The base plate 22 is fastened to the support plates 6 and 6'by a screw (not shown). The fitting 24 of the push-out rod 23 is fitted in a groove that holds the push-out rod 23, and is fixed by a screw (not shown). The rodless cylinder 25 is operated by a solenoid valve (not shown) so that the mounting member 24 can be mounted on the drive unit and moved.

The gripping mechanism 26 for gripping the I-shaped spacing piece 2 comprises:
A support plate 27 whose one end of the L-shape is made of a material having a fixed elastic force and which is made of a material of electrical insulation and a wear-resistant material that is slippery is wrapped by a gripping mechanism 26 and an upper portion is fixed by a screw 28. It is fastened to the electrode 20. The hinge pin 31 is rotatably fitted to the lower electrode holder 30 on the lower electrode support fitting 29 so that the lower electrode holder 30 can swing. The electrode tip 32 is fastened to the lower electrode holder 30 at even positions from the hinge pin 31. The rail 36 is fixed to the upper surface of the base block 38 with a screw (not shown) to be integrally formed.
Reference numeral 7 holds a rail 36 slidably. Further, a pulse motor 34 and an automatic positioning device 33 are placed on the upper part of the guide 37.
The mounting jig 35 of the iron plate 1 is fitted and fixed to the drive shaft 3 of FIG. Then, it is configured so that it can be automatically driven by an automatic control device (not shown).

Next, the operation of this embodiment will be described with reference to FIGS. Mounting jig 35 for automatic positioning device 33
After mounting a thin iron plate 1 for the stator or rotor of the rotating electric machine, a large number of I-shaped spacing pieces 2 are put into the hopper 3 and the automatic control device is started. When the motor 13 is started and each yaw brush roll 4 rotates in the direction of the arrow, the I-shaped spacing piece 2 in contact with the wire brush roll 4 is agitated and stands upright. The upright I-shaped spacing piece 2 falls by its own weight from the gap formed between the opposing wire brush rolls 4, hits the guide plate 5, and slides down to lie on a horizontal plane. Furthermore, when the next I-shaped spacing piece 2 falls, it is aligned in parallel on the horizontal plane. Further, when the next I-shaped spacing piece 2 falls, the previous I-shaped spacing piece 2 hits the standing plate 9 and stands up and falls in the pocket formed by the standing plate 9 and the guide plate 5.

When the lower limit sensor 11 detects that the I-shaped spacing piece 2 is inserted, it issues an operation command to the solenoid valve which drives the push rod 23. The rodless cylinder 25 operates to move the push-out rod 23, push out the I-shaped spacing piece 2 from the extrusion port 10 and insert it into the gripping mechanism portion of the upper electrode and return. Upon returning to the predetermined position, the sensor actuates the solenoid valve of the air cylinder 19 of the two-point spot weld device 18,
The upper electrode 20 is lowered and the I-shaped spacing piece 2 that is being gripped is pressed against the iron plate 1. The iron plate 1 on the electrode chip 32 of the lower electrode holder 30 supported by the lower electrode support fitting 29 attached to the lower electrode mounting seat 21 via the hinge pin 31 causes the I-shaped space between the upper electrode and the upper electrode. It is clamped together with the piece 2 and the two-point spot weld device 18 is activated to weld.

The air cylinder 19 is activated by the welding completion signal.
Returns to the upper side and issues a positioning command to the automatic positioning device 33. After the positioning is completed, the push rod 23 operates the rodless cylinder 25, the I-shaped spacing piece 2 is pushed out from the extrusion port 10, and the gripping mechanism 26 of the upper electrode 20 is actuated. Push to move to the next operation. The motor 13 continues to rotate when the lower limit sensor 11 does not detect the I-shaped spacing piece 2, and stops when the upper limit sensor detects the I-shaped spacing piece 2 and constantly continues to replenish the I-shaped spacing piece 2 on the guide plate 5. When the I-shaped spacing piece 2 in the hopper 3 is exhausted and the lower limit sensor 11 detects that the I-shaped spacing piece 2 is not present, all the operations are stopped and the hopper 3 is informed that the I-shaped spacing piece 2 is not present and is replenished. Then the work is resumed again. When the predetermined I-shaped spacing piece 2 is welded to the iron plate 1, the automatic positioning device 3
3 informs that the work is completed. The above operation is repeated to manufacture an iron plate with a spacer .

As described above, according to the present embodiment, the I-shaped spacing pieces put into the hopper are agitated by the wire brush roll, stand up and fall, and are aligned parallel to the extrusion port on the horizontal plane of the guide plate. Furthermore, since it falls into the pocket formed by the standing plate and the guide plate, it can be easily inserted into the upper electrode gripping part one by one in a standing state. Therefore, it is not necessary to perform alignment and standing up upon acquisition, and since there is no need for a positioning jig, productivity can be improved.

(Other Embodiments) In the above embodiment, a ring-shaped iron as shown in FIGS.
Although the plate has been described, if an automatic positioning device with simultaneous three-axis control (vertical axis, horizontal axis, turning axis) is used, any planar shape of the iron plate can be accommodated.

[0019]

As described above, according to the present invention,
If the space pieces cut into a predetermined length are put into the hopper, the wire brush roll rotates and the space pieces are agitated and dropped to stand up in an aligned manner. Can be attached to a spot spot welder. Therefore, the productivity of manufacturing the iron plate with the spacing piece of the rotary electric machine is significantly improved.

[Brief description of drawings]

FIG. 1 is a side view of an apparatus for manufacturing an iron plate with a spacing piece of a rotary electric machine according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the hopper portion of FIG. 1 and is a view for explaining a space piece alignment standing process of the rotating electric machine.

3 is a side view of the spacing piece aligning device of FIG. 1. FIG.

FIG. 4 is a front view with a part of the spacing piece aligning device of FIG. 1 removed.

5 is a partial cross-sectional view of a gripping mechanism portion of the two-point spot weld device shown in FIG.

FIG. 6 is a plan view of an iron plate with a spacing piece of a stator of a rotary electric machine to which the present invention is applied.

7 is a side sectional view of an iron plate with a spacing piece of the stator of the rotating electric machine of FIG.

FIG. 8 is a plan view of an iron plate with a spacer piece of a rotor of a rotary electric machine to which the present invention is applied.

FIG. 9 is a side view of a conventional iron plate manufacturing apparatus with a spacing piece for a rotating electric machine.

[Explanation of symbols]

1 ... Stator, rotor thin iron plate, 2 ... I-shaped spacing piece, 3 ...
Hopper, 4 ... Wire brush roll, 5 ... Guide plate, 6 ...
Support plate, 7 ... Shaft, 8 ... Partition plate, 9 ... Standing plate, 1
0 ... Extrusion port, 11 ... Lower limit sensor, 12 ... Upper limit sensor,
13 ... Motor with reduction gear, 14 ... Motor mounting bracket, 15 ...
Support bracket, 16 ... Slide unit, 17 ... Hanging fitting, 18 ... Two-point spot weld device, 19 ... Air cylinder, 20 ... Upper electrode, 21 ... Electrode mounting seat, 22 ...
Base plate, 23 ... Extrusion rod, 24 ... Mounting bracket, 2
5 ... Rodless cylinder, 26 ... Gripping mechanism, 27 ... Support plate, 28 ... Screw, 29 ... Lower electrode support fitting, 30
... Lower electrode holder, 31 ... Hinge pin, 32 ... Electrode tip, 33 ... Automatic determining device, 34 ... Pulse motor, 35
... Mounting jig, 36 ... Rail, 37 ... Guide, 38 ... Base block.

─────────────────────────────────────────────────── --Continued from the front page (56) References JP 56-125941 (JP, A) JP 59-206188 (JP, A) Actual 60-69566 (JP, U) Actual 60- 69567 (JP, U) Actual Kaihei 2-78557 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02K 15/02

Claims (2)

(57) [Claims] 1. A thin iron plate is spotted by an automatic positioning device at two points.
After positioning so as to be in contact with one electrode of the tweld device, a large number of I-shaped spacing pieces cut in advance to a predetermined length are put into a hopper, and a pair of wire brush rolls provided in the opening of the hopper are rotated. The I-shaped spacing pieces aligned from the hopper are preliminarily erected via a standing plate, and one of the erected I-shaped spacing pieces is pushed by the pushing mechanism to the two points.
Provided integrally on the other electrode end of the spot welder
The gripping mechanism part, and the I-shaped spacing piece inserted in the gripping mechanism part is pre-positioned.
It was sandwiched between the determined thin iron plate and the other electrode.
After that, the two-point spot weld device is operated to weld the I-shaped spacing piece to the thin iron plate to form a passage for a cooling medium, and a method for manufacturing an iron sheet with a spacing piece for a rotating electric machine. 2. An automatic positioning device for positioning a thin iron plate, a hopper capable of charging a large number of I-shaped spacing pieces, a pair of wire brush rolls provided in an opening of the hopper, and an opening from the opening of the hopper. An aligning device composed of a guide plate and a standing plate for aligning the I-shaped spacing pieces, which drop with the rotation of the wire roll brush, one by one, and two points for fixing the I-shaped spacing pieces to the thin iron plate by welding.
Wherein the spot weld apparatus, the I-shaped distance piece located extrusion port of the guide plate 2
Extrusion that moves to the gripping mechanism of the spot welding machine
An apparatus for manufacturing an iron plate with a spacing piece for a rotating electric machine , comprising: a mechanical section and a control apparatus that controls the two-point spot weld apparatus.