JPS62107659A - Coil centering machine - Google Patents

Abstract

PURPOSE:To automate a coil centering by constructing to pull a coil with its operating point disposed inside coil ends in centering the coil inserted into a core by moving blade system. CONSTITUTION:A trestle 11 has a guide bar 12 for supporting an upper plate 44, and a driver 14 and a guide holder 16 for inserting axially a radial pawl into a stator core 1 inserted to a coil 2 are mounted on the plate 44. The pawl is guided by a guide bar 15 to elevationally move axially the driver 14. A driver 17 having a regulator for regulating the pawl with an arbitrary driving pressure is provided in series with the moving side of the driver 14, and a driver 18 having a regulator for driving to open or close the pawl is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to coil centering during coil insertion of a rotating electric machine, and particularly to an automated device suitable for coil centering during coil insertion using a moving blade method.

[Background of the invention]

The trend in rotating electric machines in recent years has been toward miniaturization and higher efficiency, and the electrical part, which can be said to be the central part, requires the very highest level of technology and equipment. There are needs for increased space efficiency, unmanned operation, flexibility, etc., and Utility Model Publication No. 50-2224 was introduced as an insertion technology to meet these needs.
1. There is a coil insertion technique using moving blades in single-phase and three-phase rotating electric machines, such as in 1982-115161.

The insertion situation in a moving blade is as shown in Fig. 1.The advantages of this moving blade are: (1) The blade can be long (or long) in relation to the length of the stator core in the stacking thickness direction; Equipment costs are low. ■ Can be used with various single diameter wire types. On the other hand, when inserting a coil using the moving blade method, the enamelled wire at the coil end tends to overlap slightly (in the direction of stacking thickness). becomes longer (Fig. 1), and the coil end distribution becomes unbalanced (Fig. 2).

Therefore, multi-layer coils such as single-phase and three-phase coils for rotating electric machines require centering work to distribute the coils during the coil intermediate forming process, but conventionally this was done manually as shown in Figure 3. This was a bottleneck in the coil insertion work.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for centering a coil in an intermediate coil forming process in coil insertion using a moving blade method.

[Summary of the invention]

The present invention provides a method for centering a coil inserted into a core by a moving blade method such as the above-mentioned Japanese Patent Application Laid-open No. 56-N5161 or Japanese Utility Model Publication No. 50-22241, by pulling and tightening the coil with its point of action inside the coil end. In this lecture, I learned that if you press the coil with the point of action outside the coil end, the coil will be flexible, so the coil centering will be uncertain due to the coil shape, coil wire diameter, etc. become.

[Embodiments of the invention]

An embodiment of the present invention is shown in FIGS. 4 and 5 below.

The composition and operation will be explained with reference to FIG.

The pedestal 11 has four guide bars 12 that support the upper plate 44, and the upper plate 44 has a drive unit for inserting the coil 2, which has an inner diameter claw portion, into the inserted stator core 1 (hereinafter referred to as stator) from the axial direction. 14 and a guide holder 16 is attached. The inner claw portion is guided by a guide bar 15 and is moved up and down in the axial direction by a drive portion 141C.

On the movable side of the drive unit 14, there is a drive unit 17 that is connected in series with a regulator (not shown) that can adjust the drive pressure of the inner diameter claw portion as desired, and further includes a regulator (not shown) that drives the opening and closing of the inner diameter type. The drive unit 18 has a drive unit 18. Drive part 1
8 holds a guide 19, and inside the guide 19 there is a camp ring 46 that transmits the driving force of the drive part 18, and a shaft 21 having a taper 23 and a hook 27 for opening and closing the inner die 24 at the tip is inserted. It is stopped by a stopper 47.

A guide 30 guides the shaft 21, and the guide 30 is fixed to the guide 19 with a key 22 so as not to rotate, and is further fixed with a stopper 51 to prevent it from falling. The guide 30 has a claw holder fixture IA at its lower end, and the claw holder 20 is attached to the shaft 7 in the claw holder fixture 50A.
) It is attached to 21 in the form of a built-in device. A pin 29 is attached to the claw holder 20 so that the inner mold 24 can be rotated through a pin guide. An elastic material 26 is attached to the inner diameter die 24 so as to prevent it from freely expanding to the outer diameter.

The upper plate 44 has a driving part 13 such as an outer diameter claw part for moving up and down, and drives the movable plate 32 guided by the pillars 12.

The moving plate 32 has an eleventh section 39 for moving the outer die 32 in the radial direction, and an outer claw mounting plate 34 is attached to the drive section 39. An outer die 34 is rotatably attached to the outer claw mounting plate 34 via a pin 35. Further, an elastic body 57 and a stopper 35 are provided so that the outer diameter mold 54 is normally in a predetermined position. The outer diameter pawl driving section 38 attached to the moving plate 32 is operated when the outer diameter die 34 is at a predetermined position on the stator, and has a pusher 36 attached to its tip.

A conveying device 45 is provided on the pedestal 11, and a conveying device 41 with a stator placed thereon is conveyed. When the positioning tool 42 reaches the predetermined position using a stopper (not shown), the presser tool 40
Determine the position by bumping into it. Stator lifting prevention device 48
is restrained by a presser or the like to prevent the stator from lifting during coil centering. sensor 45
is used to check the presence or absence of a stator.

Next, the operation will be explained.

When the conveyor JAe 41 with the stator attached which has finished placing one coil in a predetermined position is conveyed by the conveyor device 45 and reaches a predetermined position at a stopper (not shown), the positioning tool 42 moves the Ili feeder 41 to the presser tool 40. Raise and position. At this time, if the sensor 45 detects that there is no stator, the above operation is not performed. Now, when the positioning of the stator is completed, first, the inner diameter claw part is lowered 111 to a position where it does not contact the coil when the inner diameter die is opened by the drive part 14.17! do.

When the inner diameter mold 24 is closed, it must be smaller than the inner diameter of the stator core 1. I mean,
This is because the path at the coil end of the coil inserted into the drum shown in FIG. 7 does not necessarily draw a concentric circle with the stator core 1, but when viewed from the axial direction, the path is close to a string. Figure 2 shows a side view.

Now, when the inner diameter claw part descends, the inner diameter mold 24 is opened toward the status outer circumference by the drive part 18 (as shown in FIG. 8).
. In other words, the pressing portion 23 of the shaft 21 pushes the inner mold 24 to draw an arc around the bottle 29.

At this time, it is desirable that the inner die 24 be inserted to the center of the slot (to the extent that it does not hit the slot liner 5).

Next, the drive section 17 is raised. The drive unit 17 has a regulator that can adjust the pressure.

This is to prevent the enamel from being damaged when the tensioned coil near the slot liner 5 is caught by the hook part 24A of the inner diameter claw, and also to prevent the enamel from being damaged.
4 is arranged at the bottom in FIG. 9, but since it is narrower than the slot opening, it is not as strong.

When the coil 28 and the like are pulled by the driving section 17 and stopped at a predetermined position, the state becomes as shown in FIG.

Once this is complete, return to the original position by reversing the previous movements. By the way, when the inner diameter mold 24 is closed, it is closed by the elastic body 26, but even if the inner diameter mold 24 gets caught somewhere in the coil or the like and one or several of them do not close, the inner diameter mold 24 will be closed by the temporary 27 attached to the tip of the shaft 21. It is forced to close.

When this operation is completed, the movable plate filter 2 is lowered by the drive section 13, and the 1-drive Mh section 59 is driven, resulting in the outer diameter mold shown on the right side of FIG. The drive unit 69 moves forward and the outer die 49 is inserted between the coil 2 and the stator core 1, but at this time, a gap is not formed between the coil 2 and the stator core 1 by the inner die 24. Therefore, the outer die 49 can move forward without damaging the coil. Even if the coil 2 cannot be sufficiently counseled because the inner diameter die 24 is narrow but stained, the coil 2 can be reliably centered by inserting this outer diameter die 49 and rotating the bottle 55 with the drive unit 38. It is possible.

It is a matter of course that the stator lifting prevention tool 4B is placed at a position where it does not interfere with the outer diameter die 49.

Now, above we have described an example in which both the inner diameter claw and the outer diameter claw are used, but the one with a diameter of less than tO and a relatively small output,
The purpose of centering can be achieved simply by using the inner diameter nail. Regarding the arrangement, it is not necessary to insert the forceps into all the empty slots as shown in Figure 9 (you can select sheet a as necessary), and the cross-sectional area (width) of the portion not inserted into the slot opening ) It goes without saying that Kaoru can be added.

Furthermore; jf! As shown in Figure 8, remove the stopper 47 from the hole +9A provided in the guide +9, and then remove the stopper! A'?
: When loosened, the inner claw part can be easily attached and detached.
The method of driving the two-row pawls is simple, and the setup time is short. It is conceivable to provide a drive section for each claw, but it goes without saying that this purpose would be defeated if the coil could be raised or moved by any means.

In addition, although the embodiments have been described in which the coils for one phase are inserted, it cannot be argued that the same effect can be obtained even after the coils for two phases are inserted.

For the outer diameter type, the minimum number of outer diameter type coils is determined by the straddling angle of the coils inserted for one phase, but the example given is four coils per phase as shown in Figure 11. It is. It is of course possible to have four or more cards, and the same effect can be expected. Furthermore, as shown on the left in FIG. 11, a nose portion 49A is provided on the stator core side of the outer die 49, which is slightly narrower than the teeth portion 50 of the stator core (the tip protrudes on a tapered surface (see FIG. 6)). Therefore, it is a matter of course that even if the enameled wire escapes toward the outer circumference of the slot liner 5 and is near the end face of the stator core 1, it can be picked up, and this is beyond the scope of the present invention. .

Furthermore, although not shown, the radial center portion of the outer die 49 on the side in contact with the coil 2 may be slightly raised to make the center portion of the coil 2 on a circular arc.

By doing this, the coil will have an appropriate arc, and the stress at both ends, where the outer die and the coil come into contact with each other violently, can be alleviated.

〔Effect of the invention〕

According to the present invention, coil centering can be automated, resulting in reduced man-hours, unmanned coil intermediate forming process, and uniform quality.

[Brief explanation of drawings]

Figure 1 is a sectional view of coil insertion by a moving blade, Figure 2
The figure is a front view of the stator inserted in Fig. 1, and the stator inserted in Fig. 3.
The leapfrog is a front view representing the 1st position of the stator in Fig. 2;
FIG. 4 is a front view of the @ position according to the present invention, FIG. 5 is a sectional view of the inner diameter claw portion, FIG. 6 is a sectional view of the outer diameter claw portion, FIG. 7 is a plan view of the coil insertion, and FIG. FIG. 10 is a sectional view of the inner diameter claw. FIG. 9 is a plan view of inserting the inner claw, and FIG. 11 is a plan view of inserting the outer claw. DESCRIPTION OF SYMBOLS 1... Stator core, 2... Coil, 3... Stripper, 4... # Moving blade, 5... Slot liner, 6... Sashiki, 7... Wedge guide, 8...・
Butsusha, 9...Shaft, 10...Hand, 11...
・Frame, 12... Support column, 13... Outer diameter claw drive part, 1
4...Inner diameter claw driving suit 15...Guide bar, 16...
・Guide, 17... Inner diameter claw drive, auxiliary part, 18... Inner diameter claw opening/closing support part, 19... Guide, 20... Inner diameter claw holder, 21... Shaft, 22...・Key, 23
... Taper part, 24 ... Inner diameter claw, 26 ... Elastic body, 27 ... Forced return plate, 28 ... Bush, 29 ...
... Bottle, 60 ... Guide, 51 ... Stopper, 32
... Moving plate, 33... Stopper, 34... Outer diameter claw holder, 35... Bottle, 36... Pusher, 37... Elastic body, 38... Outer diameter claw drive Part, 39... Outer diameter claw drive unit, 40... Holder, 41... Conveying tool 42... Positioning tool, 43... Sensor, 44... Upper plate, 45
...Conveyance device, 46...Coupling, 47...
Stopper, 48... Core floating prevention device, 49... Outer diameter type, 5o... Teeth portion.

Claims (1)

[Scope of Claims] 1. It has an inner diameter claw holder that is smaller than the inner diameter of a stator core of a rotating electric machine and is movable in the axial direction, and the inner diameter claw holder has an inner diameter claw that is slidable in the radial direction. The tip width of this inner diameter claw is narrower than the slot opening of the stator core, and the inner diameter claw is attached so that it can be inserted into the slot opening, and when the inner diameter claw is moved in the outer diameter direction, the stator It has a shape that allows the coil inserted into the iron core to be hooked therein, and the inner diameter claw holder has a means for moving the inner diameter claw in the radial direction, so that the inner diameter claw is moved to a slot other than the slot in which the coil is inserted into the stator core. A coil centering device that inserts and holds the inner claw from the slot opening in the radial direction, moves the inner claw holder in the axial direction, and moves and shapes the coil inserted into the stator core to a predetermined position. 2. It has an outer diameter claw that can be moved almost parallel to the core end face from the outer diameter side of the stator core into which the coil of the rotating electrical machine is inserted, and the width of this outer diameter claw can be made smaller than the minimum straddling angle of the applicable coil. 2. The coil centering device according to claim 1, wherein the outer diameter pawl is movable in a direction opposite to the end surface of the stator core (in the direction of the coil end). 3. The coil centering device according to claim 1 or 2, characterized in that the inner diameter claw and the outer diameter claw are used in combination.