JPS5858852A - Deforming method for automatically inserting interphase insulator - Google Patents

Abstract

PURPOSE:To fully automatize the steps of inserting coils by deforming an interphase insulator in wavy shape, and automatically inserting the connecting part of the insulator into the slot in this state. CONSTITUTION:An interphase insulator 3 is held by spraying to the wavy surface of one 4 of a pair of engaging forming dies 4, 8 of rugged wavy shape. Then, the insulator 3 is deformed to wavy shape by engaging the rugged surface, the pitch interval of the connecting parts 3c, 3d is allowed to be coincided with the pitch of the slots, the parts 3c, 3d are disposed at the inlet of the slot of the stator core while the deformed state is held with a chuck, and are inserted into the slots. In this manner, since the connected part can be automatically inserted into the slot in the state that the insulator is deformed and held, the steps of inserting the coils can be entirely automatized.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a deformation method for automatically inserting a thin plate-like insulator between windings when a plurality of windings are applied to a stator core of an electric motor. be.

[Prior Art J] Conventionally, motor stators were generally manufactured by installing slot insulators in the slots of the stator core in advance, inserting the phase windings using a secondary winding insertion machine, and then inserting the secondary windings. This is done by inserting the second phase winding using an insertion machine. When these windings are inserted into the slots, a band-shaped insulator is placed between the windings of the first phase winding and the second phase winding, which are outside the stator core! This is done to insulate each phase by inserting the insulator, but what is the order in which this insulator is inserted? A method of inserting a thin plate-like insulator having a connecting portion (having a pitch Y larger than the pitch at the entrance of the slot) that is also inserted into the slot into which the winding is inserted after insertion, and then inserting the second phase winding. Alternatively, after inserting the windings up to the second phase, use a tool to spread out the space between the first and second phase windings, and insert a thin plate-shaped insulator χ between both windings to create correlated insulation. There are ways to do it.

However, according to the former method, the pitch of the connecting part must be shortened before insertion, and with the latter method, it is necessary to judge the space between two irregularly shaped winding wires before inserting the wires. When the thin plate-like insulator is inserted by pushing it apart, the surface of the winding is easily damaged and the insulation properties of the winding are deteriorated.

On the other hand, the insertion of thin plate-shaped insulators between windings is done manually as described above, but given the current situation where other manufacturing processes are gradually becoming automated, it is difficult to insert thin plate-shaped insulators between windings. It is desirable that the insertion of the thin plate-like insulator in the winding insertion process also be automated.

[Purpose of the invention]

An object of the present invention is to eliminate the disadvantages associated with manual work by automatically inserting a correlative insulator accompanying the insertion of a winding into the slot of a motor stator core, and at least improve the process of inserting the winding into the slot. The goal is to automate the entire process.

[Summary of the invention]

For this purpose, the correlative insulation insertion device according to the invention comprises:
The thin plate-shaped insulator is deformed in a wave form so that the pitch of the connecting portion matches the pitch of the slot, and while the deformed chuck is used to hold the thin plate-shaped insulator, the connecting portion is connected to the stator core. It is characterized by a configuration in which the connecting portion is inserted into the slot after being positioned at the slot entrance.

[Embodiments of the invention]

The present invention will be explained below with reference to FIGS. 1 to 6.

As already mentioned, the present invention uses an interphase insulator 3 as shown in FIG. When inserting into a file, the insertion is automatically performed. The structure of the correlative insulator 3 itself consists of four parts 3a to 3d as shown in the figure, among which parts 3C and 3d
is the above-mentioned connecting portion, and the material for the entire correlative insulator 3 is selected from a material that is highly flexible and has good electrical insulation properties, such as polyester or nylon. Also,
Since the shape of the interphase insulator is made to correspond to the width of the slot 20, etc., the interphase insulator 5 of different shapes consisting of four portions 6a to 6d is similarly formed as shown in FIG. 1(b). may also be used in some cases.

□However, the important thing here is that the connecting parts 3C and 6d
(or the connecting parts 3c, 3d) is wider than the pinch interval at the entrance of the slot into which the slot is about to be inserted. Naturally, the connecting tab must be inserted into the interior of the slot 2 formed as shown through its entrance.

According to the insertion device to which the present invention is applied, the correlative insulator is automatically inserted into the slot, and FIG. 6 shows a partially enlarged perspective view of the structure. According to Kone, the configuration of the device is such that a molding piece 4 with 21 adsorption surfaces that chucks the interphase insulator 3 on the front side is regulated by a rail 6, and an air cylinder (shown in the figure) moves over the kite groove 6 in the direction of arrow Q. (not available) etc. - The tooling 9, the upper molded receiving piece 8 and the lower molded receiving piece 8' are integrally fixed on the base 7 with bolts or the like. A center flange 10 that moves in an arc with an air cylinder is mounted on the upper molded piece 8, and air cylinders 17 built into the upper molded piece 8 are installed on both sides of the support (see Figure 4). Upper side clamps 12, 12' operating at the arrows P, , P
, respectively.

Such a structure is the same for the lower molded receiving piece 8' on which the lower side cranker 16 is provided. Also, touring 9
．． The outermost diameters of the upper molding piece 8 and the lower molding piece 8' are smaller than the inner diameter of the stator 1. Therefore, the tooling 9, the upper molding piece 8 and the lower molding piece 8' are attached to the inner diameter of the stator 1.
When inserted, the positional relationship will be as shown in FIG. In this positional relationship, the connecting portion 3c housed in the bushing guide 14 is inserted into the slot 2 using the 3DY cylinder lock 15.

In this case, the stator 1 is moved up and down by hand or by a separate mechanism, but on the contrary, the tooling 9, the upper molded piece, and the lower molded piece 8 are moved together into the inner diameter of the stator 1. Good too.

Next, the configuration of the case where a correlative insulator is actually inserted will be explained. The interphase insulator 3 is attached to the molding piece 4 as shown in FIG. 5, and at this time, in order to hold the interphase insulator 5, air is sucked through the suction port 5 using a vacuum pump (not shown) or the like. . As a result, the suction surface 21 (4 locations)
This ensures that the correlative insulator 6 is held securely.

In this state, the molding piece 4 is moved along the guide groove 6' in the direction of arrow Q using an air cylinder or the like.

The molding piece 4, which is formed with an uneven wave shape so as to fit into each other, and the upper molding receiving piece 8 and the lower molding receiving piece 8' are stopped in an engaged state. Due to this operation, the correlative insulator 3 made of a relatively soft and electrically insulating material such as polyester or nylon fat is deformed along the shape (waveform) K of the molded piece 4, and is moved between the two connecting parts 5c and 3a. The pitch of is equal to the pitch of the inner diameter opening of the slot 2 of the stator 1 shown in FIG.
A correlative insulator 5 is temporarily fixed between the center clamp 10 and the center clamp 10. Although not shown, it is also temporarily fixed between it and the lower molded receiving piece 8' in the same manner. In addition, as shown in FIG. 4, a cylinder 17 is built into the upper molding piece 8 to temporarily fix both ends of the molded interphase insulator B, and an upper side clamp connected to the piston 18 12
The end portion of the interphase insulator 3 is chucked by injecting pressurized air from the B boat 20 of the A port 19 and the B boat 20. The other three ends are similarly chucked. After each part of the correlative insulator 6 is chucked in this way, the above-mentioned molding pin 4 retreats to its original position, but at this time, air suction from the suction port 5 is no longer necessary and is therefore stopped.

When the interphase insulator 5 is formed into a predetermined shape, the connecting portions 5C and 3d of the interphase insulator B are inserted into the grooves of the pusher guide 14 at a predetermined pitch (same as the pinch of the slot 2 to be inserted). In this state, the stator 1 is lowered so that the slot 2 of the stator 1 is aligned with the position of the pusher guide 14, and the stator 1 is brought into the state shown in FIG. Afterwards, the piston of cylinder 27 built into Touring 9/3
Pusher guide 14 connected to 0 via bottle 21
ke, e port 2B, f port 9.

By injecting pressurized air from the C-boat 28, it is advanced until it hits the inner surface of the stator 1, as shown in FIG. This prevents displacement of the connecting portion.

Next, the center clamp 10 that fixed the correlated insulator 3
, remove the side clamps 12 and 12Y (by means of each air cylinder), then remove the tooling 9 as shown in Figure 5.
A pin 26 is attached to the piston 23 of the cylinder 22 built in the
The pusher 16 connected via the C boat 24
, if the d-boat 25 is moved forward by pressure air injection from the C-boat 24, the connecting portion will fit into the predetermined slot 2.
It will be inserted inside. In this case, when the connecting parts 3c, 3d are inserted into the slots 2, the correlative insulator 3 is brought into a state along the inner diameter of the stator 1 as shown in FIG. 2 by its own spring force.

The insertion of the correlative insulator 6 into the slot 2 is completed.

〔Effect of the invention〕

As explained above, according to the present invention, the connecting portion is automatically inserted into the slot while the interrelated insulator is deformed and held, so that the winding insertion process is entirely automated. be.

[Brief explanation of the drawing]

FIGS. 1(a) and (b) are perspective views showing examples of interrelated insulators, FIG. 2 is a diagram showing how the interrelated insulators are inserted into slots, and FIG. 6 is a perspective view showing an example of the interrelated insulators. FIG. 4 is a perspective view of an insertion device to which the present invention is applied; FIG.
FIGS. 5 and 6 are diagrams showing the relationship with the cross-sectional t-slots taken along lines A-A and B-B in FIG. 5. 2...Slot 6...Correlating insulator 4...
Molding piece 6'...Guide groove 8...Upper forming receiving piece 8'...Lower forming receiving piece 9...Touring
14... Pushsha guide 16... Pushsha ? 4- Illustration 5 Illustration 6 Continuation of figure 1 (Inventor Takao Mifune 7-1-1 Higashi-Narashino, Narashino City, Narashino Factory, Hitachi, Ltd. 3) Inventor Yukibe Endo 7 Higashi-Narashino, Narashino City No. 1-1, Narashino Factory, Hitachi, Ltd. (?≧) Inventor Ken Nakamura - Narashino 7-1-1, Higashi-Narashino, Narashino Factory, Hitachi, Ltd.

Claims (1)

[Claims] A correlative insulator of a predetermined shape is held on the corrugated surface of one piece of a pair of mating corrugated molding pieces by vacuum suction, etc., and the correlative insulator is deformed into a corrugated shape by engaging the corrugated surfaces. A method for deforming a correlative insulator, characterized in that the interphase insulator can easily pass through the inner diameter of a stator, and a plurality of connecting portions of the correlator insulator can be inserted simultaneously.