JPS6149899B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a two-pole motor, such as a motor for a refrigerator, in which a main coil and an auxiliary coil are inserted into the stator of the motor.

Conventionally, when inserting a coil into a slot portion of a stator core in the manufacturing process of a stator for a two-pole motor such as a motor for a refrigerator, the main coil and the auxiliary coil were inserted in separate steps. In this case, first the main coil is inserted, then it is shaped to the predetermined dimensions, and then the auxiliary coil is inserted and shaped to the predetermined dimensions. There was no need to apply excessive force between the coil and the auxiliary coil. However, the conventional method of inserting the main coil and the auxiliary coil in separate steps increases the number of man-hours, making it impossible to obtain a low-cost two-pole motor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for manufacturing a two-pole motor that eliminates the drawbacks of the prior art described above and allows for simultaneous insertion of the main coil and the auxiliary coil, thereby streamlining production.

That is, in the present invention, the main coil and the auxiliary coil are inserted into the stator so that the end portion of the main coil is disposed outside the end portion of the auxiliary coil and intersects with the end portion of the auxiliary coil, and the portion adjacent to the lead wire side is made of a ferromagnetic material. , on the side opposite to the lead wire, a mandrel made of a non-magnetic material is inserted into the inner diameter of the stator from the lead wire side, and the first
Do not bring the attachment, which consists of a non-magnetic base with a shaping coil installed in the center, and ferromagnetic attachments installed on both left and right sides of the non-magnetic base so as to face the end portion of the main coil on the side opposite to the lead wire, away from the attachment. Then, a part of the first shaping coil is inserted into the opposing center portions of the U-shaped end portions of the main coil on the side opposite to the lead wire, and current is applied in the same direction to the left and right main coils. A current is applied to the part where the first shaping coil is inserted in the opposite direction to the side opposite to the lead wire of the main coil to magnetize and attract the left and right ferromagnetic attachments, and the first shaping coil is inserted. Due to the repulsion of electromagnetic force between the left and right ends of the main coil on the side opposite to the lead wires, the ends of the main coil on the side opposite to the lead wires, which are near the center, are spread outward to the left and right and stand up. The left and right ends of the lead wire side of the mandrel are magnetized by the ferromagnetic material of the mandrel so that they stand parallel to the axis of the stator using electromagnetic attraction force, so that the main coil can move to the side opposite to the lead wire, and then the main coil and The inner and outer ends of the auxiliary coil are mechanically shaped using an inner diameter shaping jig and an outer diameter shaping jig, respectively. At that time, the main coil can be easily moved to the side opposite to the lead wire, and the main coil can be easily moved to the side opposite to the lead wire. This is a method for manufacturing a type 2 motor, characterized in that it is possible to prevent excessive force from acting between the coil and the auxiliary coil.

Further, the present invention provides the method for manufacturing a two-pole motor, in which a non-magnetic material formed by turning a second shaping coil is brought close to the outside of the left and right end portions on the lead wire side of the main coil so as to face each other, respectively; Attachments equipped with ferromagnetic attachments installed on both left and right sides of the non-magnetic base so as to face the end portion of the main coil on the side opposite to the lead wire, and each having a third shaping coil rotated thereon, are brought close to the attachment. So, the second above
A current is applied to the shaping coil and the third shaping coil, and the second shaping coil magnetizes the left and right ferromagnetic attachments to strengthen the attraction force, and the left and right end portions on the lead wire side of the main coil are connected to the third shaping coil. This is a method for manufacturing a two-pole motor characterized by receiving magnetic repulsion from a shaping coil.

The present invention will be specifically explained below based on the drawings. FIG. 1 is a view from the lead wire side of a two-pole motor in which a main coil and an auxiliary coil are simultaneously inserted into a stator core using a coil inserter.

Figure 2 is a cross section taken along the line A-A' in Figure 1, showing a state in which the main coil and auxiliary coil are inserted into the stator core at the same time using a coil inserter. Figure 3 shows the state of the A-O-B cross section of Figure 1 when the inner diameter shaping jig is inserted and the main coil and auxiliary coil on the side opposite to the lead wire are being expanded outward.
-B cross-sectional view, FIG. 4 is a diagram showing the fully expanded state.

Therefore, in order to manufacture a two-pole motor, first the main coil 2 and the auxiliary coil 3 are simultaneously inserted into the stator core 1 via the slot insulator 4 using a coil inserter as shown in FIG. Then, in order to shape the main coil 2 and the auxiliary coil 3 inserted at the same time, temporarily set it in the setting tool 5 as shown in FIG. 2, and use the inner diameter shaping jig 6 as shown in FIG. When inserting the wire and trying to spread the main coil 2 and auxiliary coil 3 outward on the side opposite to the lead wire, the main coil 2 and auxiliary coil 3 intersect at right angles at the intersection indicated by 7, so the intersection is Easily scratched and scratched. Therefore, when shaping mechanically as described above, in order to prevent excessive force from being applied between the main coil 2 and the auxiliary coil 3, electromagnetic force is used to place them on the outside as shown in Figure 6. The figure shows a device for outwardly expanding the main coil 2 which is
(1)12, Inner diameter mandrel made of ferromagnetic material (2)1
3 is inserted into the inner diameter from the lead wire side, a ring 14 made of a non-magnetic conductive material is placed on the outer diameter of the lead wire side, and this is connected to a cylinder (not shown) via a mounting jig 15. It is designed to move up and down. On the other hand, on the U-shaped side opposite to the lead wire (hereinafter referred to as the U-coil side), a shaping coil 17 attached to a non-magnetic base 16 is inserted into the center of the main coil 2. A ferromagnetic attachment 18 is attached to the outside with a bolt 19, and these can be moved up and down via a mounting attachment 20 attached with another bolt 21. The operation is performed in the state shown in Figure 6.
An instantaneous current with a peak value of about 300 A is passed through the main coil 2 and shaping coil 17 of the stator. The direction of the current is such that the current flowing through the main coil 2 on the U coil side and the shaping coil 17 inserted into the center of the main coil 2 are in opposite directions as shown by ○. A repulsive force is exerted on the shaping coil 17 to spread it outward as shown by the arrow. That is, 2
The two main coils 2 are inserted into the stator 1 in a wound state so that they face each other, so when current is applied to these main coils 2, the current flows in the direction opposite to the lead wire as shown in Figure 6. ,○ on the lead wire side
flow in the direction. By the way, a shaping coil 17 wound in a direction perpendicular to the plane of the paper in FIG. 6 is inserted into the center of the opposite ends of the main coil 2 on the side opposite to the lead wire, and the shaping coil 17 is wound in the ○ direction as shown in FIG. Since a current is applied to each of the main coil parts according to Fleming's law, repulsion of electromagnetic force occurs between the shaping coil 17 and the main coil part.
spread outwards. On the other hand, on the lead wire side, there is a ferromagnetic mandrel (2) 13 on the inner diameter side and a ring 14 made of non-magnetic conductive material on the outside, so the coil is bent inward as shown by the arrow, and the end coil is It will be in a standing position. In addition, since current flows in the same direction in the coils in the slot, they attract each other and have a binding effect, creating a gap with respect to the slot, so that the coil can easily move in the axial direction of the stator within the slot. Become. Note that the auxiliary coil 3 on the lead wire side is pushed by the main coil 2 on the outside and becomes a standing state.

When the stator is removed from the device in this state, as shown in FIG. 7, the main coil 2 on the U-coil side is expanded outward, and the lead wire side is in an upright position.

Furthermore, if the shaping shown in Figs. 3 and 4 is performed in this state, the result will be as shown in Figs. 8 and 9. In Fig. 8, the main coil 2 and auxiliary coil 3 are separated on the U coil side. Since there is no contact, no scratches will occur. In Fig. 9, the main coil 2 and the auxiliary coil 3 are in contact with each other, but since shaping has already been completed,
Unreasonable force will not act between the two. Next, the fifth
By pressing the inner and outer diameter dimensions using the same device as shown in the figure, the stator with the predetermined dimensions is completed. That is, in order to measure the outer diameter, the upper outer diameter shaping jig 8 is
Then, press down the lower side with the lower outer diameter shaping jig 9. Note that the lower outer diameter shaping jig 9 is configured such that a mounting attachment 10 attached with a bolt 11 can be moved up and down by a cylinder (not shown).

By using electromagnetic force on the side opposite to the lead wire of the main coil 2 placed outside, the main coil 2 is spread outward in advance without contacting the auxiliary coil 3. Since there is no action of pushing 2 apart, it is possible to prevent scratches between both coils and reduce deterioration of dielectric strength. 10 and 11 are examples in which a shaping coil is placed outside the coil to be shaped, in order to strengthen the electromagnetic shaping force of the apparatus shown in FIG.

In Figure 10, the shaping coil (B) 21' is placed outside the coil on the lead wire side, and the current is opposite to the side adjacent to the main coil 2 to be absorbed inward, as shown by ○. The main coil 2 is aligned with the inner diameter mandrel to generate a repulsive force.
(2) At the same time as it is attracted by 13, the shaping coil (B) 2
1', it is pushed back and the shaping force pushing inward can be strengthened.

Fig. 11 shows how the shaping coil (C) is connected to the main coil 2 in order to strengthen the shaping force on the side opposite to the U-shaped lead wire.
The main coil 2 is repelled by the inner mandrel (1) 12, and at the same time the shaping coil (C) 22 It can be sucked in and strengthen the shaping force that tries to spread outward. Depending on the intended shaping force, either one of the shaping coil (B) 21 and the shaping coil (C) 22 may be used alone.

Therefore, the main coil 2 and the auxiliary coil 3 correspond to, for example, the slots of the stator, and the fingers to which the main coil and the auxiliary coil are attached are arranged on the circumference.
They are simultaneously inserted into the stator and supplied to the supply station 44 by a simultaneous insertion means (not shown) constituted by a push piece that moves up and down therein. Next, the main coil and the auxiliary coil are shaped. An embodiment of the shaping device is shown in FIG. 12.
In the shaping device, an index table 32 is arranged on a common base 31, and a set holder 5 of three stators is provided on the index table 32. A connector 33 and a power supply 34 are attached to the set holder 5, and are designed to supply power during shaping using electromagnetic force. The connector 33 shown in FIG. 13 can be used. The stator is set at the supply station 44, and when a signal is applied, the movable tooth 53 is lifted by the connector opening/closing cylinder 35. In this state, the lead wire 60 is inserted as shown in FIG. , the connector opening/closing cylinder 35 descends,
The movable tooth 53 is pulled back downward by the force of the spring 54, and as shown in FIG. 15, the movable tooth 53 peels off the insulating film and bites the lead wire 60. When the next signal is applied in this state, the index table 32 rotates,
The electromagnetic shaping station 37 is reached, and a power feeder 34 as shown in FIG. 16 is connected using the power feeder opening/closing cylinder 36. That is, by raising the cylinder 35, the power supply side conductor piece 66 is inserted into the power reception side conductor piece 62, thereby connecting the stator 45 and the high voltage power source (not shown).

In the electromagnetic orthopedic station 37, column (1) 38
By means of the cylinder 39 attached to the inner diameter mandrel (1) 12 and inner diameter mandrel (2) shown in FIG.
13, a shaping jig consisting of a ring 14 or a 10th
A partially improved version of the same as shown in Figures 1 and 11 can be moved up and down.

Also, from the bottom of the index table, the 6th
The electromagnetic shaping jig on the U coil side as shown in the figure or FIG. 11 can be moved up and down. In this station, the operation shown in FIG. 6 or FIG.
is released, the index table 32 rotates and reaches the mechanical shaping station 40, where the cylinder 42 attached to the column (2) 41
Inner diameter shaping jig 6 and upper outer diameter shaping jig 8
can be moved up and down, and from the bottom of the index table 32, a lower outer diameter shaping jig 9 as shown in FIG. 5 can be moved up and down. Perform plastic surgery.

Once this mechanical shaping is complete, index table 32 is rotated back to supply station 44. An operation panel 43 is provided next to the supply station. In the shaping device of this embodiment, the stator is attached and detached by the operator.

In this embodiment, a method using an index table is shown as a method of transporting the stator, but it is also possible to transport a set of stators using a chain conveyor of a free cycle method or a fixed cycle method. It is.

As explained above, according to the present invention, in a two-pole motor, with the main coil and the auxiliary coil inserted into the stator, both ends of the main coil on the lead wire side and the side opposite to the lead wire are erected. The end parts of the main coil and auxiliary coil can be moved in the axial direction of the inner diameter shaping jig and the outer diameter shaping jig without damaging the coils at the intersection of the ends of the main coil and auxiliary coil. It can be shaped mechanically using a tool, which has the effect of streamlining production. That is, according to the present invention, it is now possible to insert the main coil and auxiliary coil of a two-pole motor at the same time, which was previously considered difficult, and as a result, the stator core can be attached and detached only once, reducing man-hours and facilitating automation. It becomes easier.

[Brief explanation of the drawing]

Figure 1 shows a two-pole motor in which the main coil and auxiliary coil are inserted into the stator core at the same time, as seen from the lead wire side.
A-A with the one in the picture set to set employment
Cross-sectional view, Figure 3 is a diagram showing the A-O-B cross-sectional state where the main coil and auxiliary coil on the side opposite to the lead wire are being expanded outward with an inner diameter shaping jig, and Figure 4 is a cross-sectional view of the
Figure 5 shows the state in which the outer diameter of the upper and lower sides is held down with a shaping jig, Figure 6 shows the state in which the main coil is expanded outward using electromagnetic force. Figure 7 is a diagram showing a state where the main coil is expanded using the equipment shown in Figure 6, and Figure 8 is a diagram showing the main coil in the state shown in Figure 7 after being shaped as shown in Figure 3. FIG. 9 is a diagram showing a state corresponding to FIG. 4, FIGS. 10 and 11 are diagrams showing a partially improved device of the device shown in FIG. 6, and FIG. FIG. 13 is a diagram showing an example of a shaping device employing this method. FIG. 13 is a diagram showing a connector used in the device. FIG. 1
Figure 5 shows the connector closed while peeling off the lead wire film, Figure 16 shows the power feeder for supplying power to the connector in the electromagnetic shaping station, and Figure 17 shows the power receiving side of the power feeder. It is a figure which shows the state of the connection of a conductor and a power supply side conductor seen from the C side. Explanation of symbols, 1...Stator core, 2...Main coil, 3...Auxiliary coil, 2'...Main coil lead wire,
3'... Auxiliary coil lead wire, 4... Slot insulator, 5... Setting tool, 6... Inner diameter shaping jig, 7... Coil intersection, 8... Upper outer diameter shaping jig, 9... Lower outer diameter shaping Jig, 12...Inner diameter mandrel (1), 13...
Inner diameter mandrel (2), 14...ring, 15...mounting jig, 16...non-magnetic base, 17...shaping coil, 1
8... Ferromagnetic attachment, 20... Attachment for mounting, 21'... Coil for shaping (B), 22... Coil for shaping (C), 32... Index table, 3
3'... Lead wire, 37... Electromagnetic shaping station,
40... Mechanical shaping station, 44... Feeding station, 45... Stator.

Claims (1)

[Claims] 1. The main coil and the auxiliary coil are inserted into the stator so that the end portion of the main coil is disposed outside the end portion of the auxiliary coil and intersects with the end portion of the auxiliary coil, and the portion adjacent to the lead wire side is ferromagnetic. A mandrel formed of a non-magnetic material is inserted into the inner diameter of the stator from the lead wire side, and a non-magnetic base with the first shaping coil installed in the center and the main coil on the opposite lead wire side are inserted into the inner diameter of the stator from the lead wire side. ferromagnetic attachments installed on both left and right sides of the non-magnetic base so as to face the end portion, and a part of the first shaping coil is shaped into a U-shape of the main coil by bringing attachments closer together. A current is passed in the same direction to the left and right main coils, and the opposite end of the main coil is inserted into the part where the first shaping coil is inserted. A current is applied in the opposite direction to the left and right ferromagnetic attachments to magnetize and attract them, and to create an electromagnetic force between the part where the first shaping coil is inserted and the left and right ends of the main coil on the side opposite to the lead wire. Due to the repulsion, the ends of the main coil on the side opposite to the lead wire, which are near the center, are spread outward to the left and right, and the left and right ends of the main coil on the lead wire side are electromagnetically attracted by magnetizing the ferromagnetic material of the mandrel. The force is used to make the stator stand parallel to the axis, so that the main coil can move toward the side opposite to the lead wires, and then the inner and outer ends of the main coil and the auxiliary coil are fixed with an inner diameter shaping jig and an outer shaping jig, respectively. A method for manufacturing a two-pole motor, which comprises mechanically shaping the motor using a tool. 2. Insert the main coil and auxiliary coil into the stator so that the end of the main coil is placed outside the end of the auxiliary coil so that they intersect, and the part adjacent to the lead wire side is made of ferromagnetic material, and the part adjacent to the lead wire side is made of ferromagnetic material, and the part adjacent to the lead wire side is In this non-magnetic coil, a mandrel made of a non-magnetic material is inserted into the inner diameter of the stator from the lead wire side, and a second shaping coil is turned so as to face each other on the outside of the left and right end portions on the lead wire side of the main coil. The first shaping coil is placed on both left and right sides of the non-magnetic base so as to face the non-magnetic base and the end portion of the main coil on the side opposite to the lead wire, with the magnetic body brought close to the base; A ferromagnetic attachment with a third shaping coil wound thereon is brought close to the third shaping coil, and a part of the first shaping coil is placed relative to the end portion of the U-shaped opposite lead wire side of the main coil. A current is passed in the same direction to the left and right main coils, and a current is passed to the part where the first shaping coil is inserted in the opposite direction to the side opposite to the lead wire of the main coil. A current is passed through the second shaping coil and the third shaping coil, and the second shaping coil magnetizes the left and right ferromagnetic attachments to strengthen the attraction force, and the part into which the first shaping coil is inserted and the main Due to the repulsion of electromagnetic force between the left and right end portions of the coil on the side opposite to the lead wire, the end portion of the main coil on the side opposite to the lead wire, which is near the center, spreads outward to the left and right and stands up. The left and right end portions are magnetically repulsed by the third shaping coil, and the ferromagnetic material of the mandrel is further magnetized to stand up parallel to the stator axis by electromagnetic attraction, so that the main coil is on the side opposite to the lead wire. 1. A method for manufacturing a two-pole motor, which comprises making the main coil and the auxiliary coil movable, and then mechanically shaping the inner and outer sides of the end portions of the main coil and the auxiliary coil using an inner diameter shaping jig and an outer diameter shaping jig, respectively.