JPH06178509A - Coil winding apparatus for stator - Google Patents

Abstract

PURPOSE:To make it possible to wind a plurality of coil wires readily at the same time by providing the constitution, wherein a dummy core is rotated by the moving amount of coil grooves whose number is equal to the number of coil wires guided from a guiding port by the rotation of a cam shaft. CONSTITUTION:The end parts of a plurality of coil wires 9, which are guided to guiding ports 27 of a guide lever 24, are fixed to the end part of a core shaft 3 with a fixing nut 10. The respective wires are arranged along the corresponding coil grooves 5 of a dummy core 4. Under this state, the guide lever 24 and a moving block 23 are moved into the direction of a first sawtooth- shaped cam 19 along a guide 22. Then, the wires are arranged in the coil grooves 5. When the guide lever 24 comes to a position, which is deviated from the end part of the dummy core 4, the coil wires 9 are pushed into the deep position of the coil grooves 5. When the guide block 24 and the moving block 23 are further moved into the same direction under the state, wherein the guide lever 24 is lowered, the dummy core 4 is rotated. When the guide lever 24 and the moving block 23 are further moved into the direction of a second sawtooth-shaped cam 20, the wires are arranged into the different grooves 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator coil winding machine.

[0002]

2. Description of the Related Art Generally, a stator used in a conventional motor has a core b formed integrally with laminated plates and having a coil groove a formed on the inner surface thereof, as shown in FIG.
A coil wire c is wound around the coil groove a from the inner surface side of the coil.

For this reason, various coil winding machines for stators for winding the coil wire c from the inner surface side of the core b to the coil groove a have been conventionally considered, but the narrow space side inside the core b is considered. Since it is a winding work from the above, there is a problem that the work is difficult to perform due to the space limitation and the configuration of the device is complicated.

On the other hand, it is conceivable to construct a stator in which iron cores having a fine pitch are arranged by winding a coil wire from the outside on a dummy core having a coil groove formed on the outer peripheral surface. ing.

By winding the coil wire around the dummy core from the outer peripheral side in this manner, the workability of the winding work is improved, and the pitch of the iron core is made fine so that the magnets of the magnetic poles are circled at a fine pitch. Since a large number of magnetic poles can be arranged on top of each other, the magnetic flux per magnetic pole becomes small, so that the magnetic path can be narrowed to increase the winding density, and further, the stator yoke of the stator can be made thin and compact. is there.

[0006]

However, there is no device for winding the coil wire around the outer periphery of the dummy core, and therefore, when winding the coil wire from the outside on the dummy core, Since each coil wire is wound manually, this work is very complicated, time-consuming and inefficient, and the work requires skill. Had.

The present invention has been made in view of the above conventional problems, and is for a stator in which a plurality of coil wires can be easily and simultaneously wound around a coil groove formed on the outer periphery of a dummy core. An object is to provide a coil winding machine.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a dummy core rotatably supported by a core shaft and having a plurality of coil grooves radially formed over the entire axial length thereof, and a core side gear attached to the core shaft. A cam shaft that is rotatably supported by a cam gear that meshes with the core gear and that is parallel to the core shaft, and first and second cam shafts that are attached to the cam shaft at a distance between the dummy cores. A second cam plate and a surface of the first cam plate that faces the second cam plate are axially projected at equal circumferential intervals, and a straight surface parallel to the cam shaft on one side in the rotation direction of the cam shaft. And a second cam plate having a linear surface and an inclined surface facing the first saw-toothed cam, the first saw-toothed cam having an inclined surface inclined to the cam shaft on the other side. And is displaced from the first serrated cam by a half pitch in the circumferential direction. Two saw-toothed cams, a moving block movably supported along a guide provided in parallel with the core axis, and a plurality of coil wires supported by the moving block so as to be vertically movable adjacent to the dummy core. A guide lever having a guide port leading to a plurality of coil grooves, and a guide lever attached to the guide lever and alternately abutting the first serrated cam and the second serrated cam so that the cam shaft of the serrated cam. A rotary drive pin that rotates by half a pitch at a time, and the dummy core is rotated by an amount corresponding to the number of coil grooves moved by the rotation of the cam shaft, the coil grooves being guided from the guide opening. The present invention relates to a stator coil winding machine.

[0009]

According to the present invention, a plurality of coil wires led to the respective guide ports of the guide lever are fixed to one end of the core shaft (for example, the second serrated cam side), and each of the coil wires corresponds to the dummy core. The guide lever and the moving block are moved in the first sawtooth cam direction along the guide in a state of being along the coil groove. Then, each coil wire is laid in each coil groove.

When the guide lever comes to a position away from the end of the dummy core, the guide lever is lowered with respect to the moving block so that the coil wire is pushed into the deep position of the coil groove. Further, when the guide lever and the moving block are further moved in the same direction with the guide lever being lowered, the rotation drive pin of the guide lever comes into contact with the inclined surface of the first serrated cam and moves. The action of the rotation drive pin causes the first cam plate to rotate, whereby the cam shaft and the cam side gear rotate, and the dummy core rotates through the core side gear and the core shaft.

At this time, the dummy core is placed so that the coil wire of the guide port of the guide lever is located at a position corresponding to each of the adjacent coil grooves different from the coil groove in which the coil wire is already laid. Is rotated.

When the guide lever and the moving block are moved along the guide in the direction of the second serrated cam, the coil wires are laid in the respective coil grooves different from the above. When the guide lever comes to the position away from the end of the dummy core, the guide lever is lowered again with respect to the moving block so that the coil wire is pushed into the deep position of the coil groove, and the guide lever is further lowered. The guide lever and the moving block are moved toward the second serrated cam. Then, the rotation drive pin of the guide lever abuts on the inclined surface of the second sawtooth cam, which is displaced from the first sawtooth cam by a half pitch in the circumferential direction, to thereby move the second cam plate. Is rotated, which causes the dummy core to rotate in the same direction and at the same angle.

When the above work is repeated, the dummy core is wound around the entire circumference of the dummy core while being rotated by a half pitch of the sawtooth cam, and the same coil is again placed in the coil groove in which the coil wire is first laid. The utility wire is laid, and by repeating this operation, it is possible to configure the stator coil in which a bundle of many windings is formed in the circumferential direction.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show one embodiment of a coil winding machine for a stator, in which a bearing 2 provided on a base plate 1 is provided with a dummy core 4 in which both ends of a core shaft 3 are rotatably supported. Arrange. The dummy core 4 has a required length, and a large number of axially long protrusions 4a are formed on the outer peripheral surface of the dummy core 4, as shown in FIG. 3, and are inserted between the protrusions 4a. A plurality of radial coil grooves 5 are formed by the dummy iron core 4b made of plastic or the like over the entire axial length. A gear shaft 7 having a core side gear 6 is coaxially arranged at one end of the core shaft 3, and the core shaft 3 is attached to the gear shaft 7.
Is detachably attached by a fixture 8. A fixing nut 10 for fixing the end of the coil wire 9 is provided at the end of the dummy core 4 at the other end of the core shaft 3.
Is attached.

A camshaft 12 rotatably supported by bearings 11 is provided on the base plate 1 in parallel with the core shaft 3, and the camshaft 12 has the gear 6 on the core side. The cam-side gear 13 that meshes with the cam core 13 is attached, and the first and second cam plates 15 and 16 are attached at positions with a space sandwiching the dummy core 4.

The second cam plate 16 of the first cam plate 15
The camshaft 12 has a linear surface 17 parallel to the cam shaft 12 on one side in the rotational direction of the cam shaft 12 at circumferentially equidistant positions on the surface facing the cam shaft 12 on the other side. A first serrated cam 19 having an inclined ramp surface 18 is mounted.

The second cam plate 16 has a linear surface 17 and an inclined surface 18 facing the first serrated cam 19.
A second saw-toothed cam 20 is attached whose position is displaced from the pitch S of the first saw-toothed cam 19 by approximately a half pitch 1 / 2S in the circumferential direction.

Further, a guide 22 having two guide rods 21 parallel to the core axis 3 is provided on the side of the dummy core 4.
Is provided with a movable block 23 that is movable along the guide rod 21 in parallel with the core shaft 3. The movable block 23 extends above the dummy core 4 and the cam shaft 12. A guide lever 24 is attached so as to be able to move up and down.

As shown in FIG. 2, the guide lever 24 has a recess 25 at a lower surface position corresponding to the dummy core 4,
When the guide lever 24 is moved down from the longitudinal end portion of the dummy core 4, the recessed portion 25 can be lowered to the deepest position of the coil groove 5 when the guide lever 24 is lowered. The recess 26 is held at a higher position than the outer circumference of the dummy core 4 by a spring 26 provided in the moving block 23.

A plurality of guide openings 27 are formed in the recessed portion 25 of the guide lever 24 so as to penetrate in the vertical direction and have a required interval in the longitudinal direction of the guide lever 24. A plurality of coil wires 9 are guided from an electric wire reel (not shown), and each of the coil wires 9 is connected to the dummy core 4
The positions of the predetermined plurality of coil grooves 5 are matched. In the case shown in the figure, there are three guide openings 27, and three separate coil wires 9 are provided in each of the three adjacent coil grooves 5.
The case where the book can be laid at the same time is shown.

Further, the tip of the guide lever 24 is alternately contacted with the first serrated cam 19 and the second serrated cam 20 so that the cam shaft 12 has a half pitch of the serrated cams 19, 20. It is provided with a rotation drive pin 28 adapted to rotate by 1 / 2S. At this time, when the cam shaft 12 rotates by the half pitch 1 / 2S of the saw-toothed cams 19 and 20, the gears 6 and
The dummy core 4 is rotated through 13 and the core shaft 3 by an angle that moves by three coil grooves 5.

Next, the operation of the above embodiment will be described.

The ends of the plurality of coil wires 9 guided to the respective guide ports 27 of the guide lever 24 are fixed to the ends of the core shaft 3 by fixing nuts 10, and each of the coil wires 9 corresponds to the dummy core 4. The guide lever 24 and the moving block 23 are moved along the guide 22 in the direction of the first serrated cam 19 while being aligned with the coil groove 5. Then, the coil wires 9 are laid in the coil grooves 5.

When the guide lever 24 comes to a position away from the end of the dummy core 4 in the lengthwise direction, the guide lever 24 is lowered with respect to the moving block 23 to push the coil wire 9 into the deep position of the coil groove 5. To do so. Further, when the guide lever 24 and the moving block 23 are further moved in the same direction as described above with the guide lever 24 being lowered, the rotation drive pin 28 of the guide lever 24 is brought into contact with the inclined surface 18 of the first serrated cam 19. It will contact and move,
The first cam plate 15 is rotated by the action of the rotary drive pin 28, whereby the cam shaft 12 and the cam side gear 13 are rotated, and the dummy core 4 is rotated via the core side gear 6 and the core shaft 3.

At this time, the guide port 27 of the guide lever 24
The dummy core 4 is rotated so that the coil wire 9 of FIG. 1 comes to a position corresponding to each of the coil grooves 5 different from the coil groove 5 in which the coil wire 9 is already laid.

Subsequently, the guide lever 24 and the moving block 23 are moved along the guide 22 to the second serrated cam 2 this time.
When moved in the 0 direction, each coil wire 9 is laid in a coil groove 5 different from the above. When the guide lever 24 comes to a position away from the end of the dummy core 4, the guide lever 24 is lowered again with respect to the moving block 23 so that the coil wire 9 is pushed into the deep position of the coil groove 5. Guide lever 2 with guide lever 24 lowered
4 and the moving block 23 are further moved in the direction of the second serrated cam 20, the rotary drive pin 28 of the guide lever 24 is separated from the first serrated cam 19 by a half pitch ½ in the circumferential direction.
The second cam plate 16 is rotated by coming into contact with the inclined surface 18 of the second sawtooth cam 20 displaced by S and moving the second cam plate 16,
This causes the dummy core 4 to rotate in the same direction and at the same angle.

When the above work is repeated, the coil wire 9 is wound around the coil groove 5 around the entire circumference of the dummy core 4, and the same coil wire 9 is laid again in the coil groove 5 in which the coil wire 9 is first laid. By repeating this operation, a coil in which a large number of bundles are formed by the coil groove 5 can be formed.

After the coil is formed, the dummy iron core 4b shown in FIG. 3 is removed from the dummy core 4 and the iron core is inserted instead. The stator is configured by integrally fixing the iron core and the stator yoke 29 with resin.

The present invention is not limited to the above-mentioned embodiment, but is not limited to the number of a plurality of coil wires wound at the same time, and within the scope of the present invention. Of course, various changes can be made.

[0031]

According to the above-described stator coil winding machine of the present invention, a plurality of coil wires can be simultaneously wound in the coil groove on the outer peripheral surface of the dummy core by a simple operation, and work efficiency is greatly improved. In addition to being able to do so, excellent effects such as easy work without requiring skill can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged arrow view taken along line II-II in FIG.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG.

FIG. 4 is a side view showing an example of a stator configured by winding a coil wire inside a conventional core.

[Explanation of symbols]

 3 core shaft 4 dummy core 5 coil groove 6 core side gear 9 coil wire 12 cam shaft 13 cam side gear 15 first cam plate 16 second cam plate 17 straight surface 18 inclined surface 19 first sawtooth cam 20 second Second serrated cam 22 Guide 23 Moving block 24 Guide lever 27 Guide opening 28 Rotation drive pin S pitch

Claims (1)

[Claims] 1. A dummy core rotatably supported by a core shaft, in which a plurality of coil grooves are radially formed over the entire axial direction, a core-side gear attached to the core shaft, and a core parallel to the core shaft. And a cam shaft rotatably supported by a cam gear that meshes with the core gear, and first and second cam plates attached to the cam shaft at a distance between the dummy cores. Of the cam plate is axially projected at equal circumferential positions on the surface facing the second cam plate, and has a straight surface parallel to the cam shaft on one side in the rotational direction of the cam shaft and a cam shaft on the other side. A first saw-toothed cam having an inclined surface inclined with respect to the second cam plate, a straight surface facing the first sawtooth-shaped cam and an inclined surface, and the second cam plate protrudingly provided. A second saw-toothed cam whose position is shifted by about a half pitch in the circumferential direction with respect to the first saw-toothed cam; (A) A moving block movably supported along a guide provided parallel to the axis, and a guide port that is movably supported by the moving block and guides a plurality of coil wires to a plurality of adjacent coil grooves of the dummy core. And a rotation lever attached to the guide lever, which alternately abuts the first serrated cam and the second serrated cam to rotate the cam shaft by half pitch of the serrated cam. A coil winding for a stator, comprising: a pin, and the dummy core is rotated by an amount corresponding to a number of coil grooves moved by the rotation of the cam shaft, the coil grooves being the same number as the number of coil wires guided from the guide port. Line machine.