JPH05219694A - Manufacturing device for wound stator iron core - Google Patents

Abstract

PURPOSE:To get manufacture device for a wound stator iron core, which can manufacture an iron core without a pressed flaw or a bend by a guide pin at the surface by retreating the guide pin upward with a mobile pin at interference between a strip material and the guide pin. CONSTITUTION:A strip material 10 is hauled and wound around an inner guide tube by the rotation of a drive pin 38. At this time, if the drive pin 38 interferes with the strip material 10, it is pushed up by the actions of a mobile cam 45, which is supported capably of up and down sliding to the end of a cam face 44, and a mobile pin 46, which is supported capably of shifting up and down by a spring 50. As a result, the drive pin 38 enters a slot 14a at the point of time when it reaches noninterference position. Then, after lamination into a specified thickness, they are pressed into a wound stator iron core. Accordingly, for the stator iron core to be manufactured, the pressed flaw or bend caused by a guide pin can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding stator core manufacturing apparatus for manufacturing a stator core of a rotating machine such as an electric motor or a generator.

[0002]

2. Description of the Related Art A wound stator core is formed by laminating a predetermined number of strip-shaped steel plates in a ring shape. There is a method of winding and laminating in a shape. In such a method, the strip material linearly conveyed is wound and guided around the outer circumference of the inner diameter guide cylinder by the guide pin.

FIG. 8 and FIG. 9 show a plan view and a side view of the state of the introduction portion of the strip material 10 in the conventional winding stator iron core manufacturing apparatus. Strip material 1
0 has a comb-shaped portion 14 formed inside, and the comb-shaped portion 1
The tips of the guide pins (18a, 18b) are inserted into the four gaps (hereinafter referred to as "slots") 14a. The guide pin is rotating in the direction of the arrow, and is lowered by a cam or the like at the introduction portion to be sequentially inserted into the slots of the strip material 10. In addition, in this figure,
The guide pin 18a is the first pin and the guide pin 18b is the second pin.

In such an apparatus, the guide pins 18a and 18b make a circular motion while the strip material 10 moves straight, so that the first pin 18a accurately moves into the slot 1.
Even if it is inserted in 4a, interference occurs between the second pin 18b and the comb-shaped portion 14. Therefore, conventionally, the guide pin 1
Tapered surfaces 19a and 19b are formed at the tips of 8a and 18b.

[0005]

However, even if the tapered surfaces 19a and 19b are formed at the tips of the guide pins as described above, the impact between the second pin 18b and the strip material 10 can be sufficiently mitigated. There wasn't. In particular, such a problem becomes remarkable when the winding radius (curvature radius) of the strip material 10 is small. As a result, there is a problem that the strip material 10 is indented or bent.

An object of the present invention is to provide a winding stator iron core manufacturing apparatus capable of manufacturing an iron core having no indentation or bending by a guide pin on the surface.

[0007]

To achieve the above object, the present invention is to spirally wind a long strip material having one side formed in a comb shape, with the side surface in the comb side facing inward. In a winding stator iron core manufacturing apparatus that manufactures a winding stator iron core of a predetermined number of turns, it moves on a circumference concentric with the winding center of the strip material and enters the slot of the comb-shaped portion of the strip material. A guide pin that drives the strip material to be wound, a fixed cam means that comes into contact with the upper portion of the guide pin, and lowers the guide pin so that the moving guide pin enters the slot of the comb-shaped portion of the strip material, In the vicinity of the introduction part to the apparatus, there is provided a buffering means for retracting the guide pin above the cam surface of the fixed cam means when the straight-moving strip material interferes with the guide pin.

[0008]

In the winding stator iron core manufacturing apparatus according to the present invention, since the guide pin is retracted above the cam surface of the fixed cam means by the cushioning means, a strip member that linearly enters the apparatus is provided. Even when the winding radius (curvature radius) of the strip material is small because the impact due to the interference with the guide pin is alleviated, the guide pin can be smoothly inserted into the gap of the comb-shaped portion of the strip material.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 2-1, FIG. 2-2, and FIG. 3 respectively show a winding stator iron core manufacturing apparatus according to the embodiment and the configurations of the winding stator iron core manufactured by the apparatus.

The winding stator iron core manufacturing apparatus 20 is connected to a rotating main shaft 22 arranged at the center, a set of bevel gears 24a and 24b for transmitting power to the rotating main shaft 22, and a tip of the rotating main shaft 22 ( Fixed) and strip material 10
The inner diameter guide tube 26 around which the coil is wound, the molding plate 28 that regulates the outer diameter of the strip material 10, and the squeeze ring 3
0, a cylinder head portion 32 and a pressure pad 34 for applying a pressure from below to the laminated strip arranged between the squeeze ring 30 and the inner diameter guide cylinder 26.
A guide plate 36 fixed to the rotary main shaft 22 to rotate integrally, a drive pin 38 arranged in the guide plate 36 for pulling the slip 10, and a guide pin 38 fixedly installed above the guide plate 36 to move the guide pin 38 up and down. It includes a cam mechanism 40 that slides the slide member 10 and a cutting device 42 that is arranged in the middle of a guide passage around which the strip material 10 winds around the outer circumference of the inner diameter guide tube 26.

The inner diameter guide tube 26 is composed of a frustoconical introduction portion 26a formed in the upper portion and a uniform outer diameter formation portion 26b formed under the introduction portion 26a. It is adapted to be rolled and dropped from 26a to the forming portion 26b. The cylinder head portion 32 is attached to the tip of the piston rod of the fluid pressure cylinder.

In FIG. 4, the strip material 10 and the drive pin 3 are shown.
The positional relationship between 8 and the cutting device 42 is shown by an angle from above. Further, FIG. 5 shows the configuration of the cutting device 42. The guide pin 38 is supported in the guide plate 36 so as to be slidable up and down.
Many are continuously installed at regular intervals over the outer circumference of the.

The cutting device 42 comprises two members, a fixed member 42a and a movable blade 42b, and cuts the strip material 10 passing on the fixed member 42a by the movable blade 42b.

FIG. 1 shows the structure of the guide pin 38 at the introduction portion A (see FIG. 2-2) of the strip material 10. The guide pin 38 shown in the drawing is a pin that is first engaged when the device is wound, and is provided at a position where the strip member is engaged when the strip material reaches a predetermined position. Further, FIG. 6 shows a part of the cam mechanism 40 and the guide pin 38.
The positional relationship with is indicated by the angle from below.

The cam mechanism 40 has an annular cam plate 43 which is concentrically arranged with respect to the center of the rotation main shaft and fixed in position. As shown in FIG.
On one side of 3 (on the side of the guide pin 36), the convex portion 4 serving as the cam surface
4 is formed, the guide plate 36 accommodating the guide pin 38 rotates due to the rotation of the rotary shaft 22, and the surface of the cam plate 43 that contacts the guide pin 38 (the convex portion 4).
A cam mechanism is formed between the same and 4).

Further, as shown in FIG. 2-2, the buffer means C is provided on the upper part of the cam plate 43, and the structure thereof is, as clearly shown in FIG. 1, a convex surface which is the cam surface of the cam plate 43. The movable cam 45 is supported on the end of the portion 44 so as to be vertically slidable, and the movable pin 46 is disposed on the upper part of the movable cam 45. The tip of the movable pin 46 is the upper surface of the movable cam 45. And is supported by a spring 50 so as to be movable up and down.

Next, the operation and action of the winding stator iron core manufacturing apparatus 20 configured as described above will be described.
When the rotating main shaft 22 is rotated by the bevel gears 24a and 24b, the guide plate 36 is rotated accordingly.
When the guide plate 36 rotates, the drive pin 38 revolves up and down by the cam mechanism 40. When the strip material 10 enters the forming plate 28 of the device 20, the drive pin 38 is inserted into the slot 14 a of the strip material 10.
Sequentially enter, and the rotation thereof causes the strip material 10 to be pulled and wound around the outer circumference of the inner diameter guide cylinder 26.

At this time, in the introduction part of the apparatus 20, the second
When the drive pin 38 at the pin position (position where the cushioning means is installed) interferes with the strip material 10, the spring 50 and the movable pin 46
The drive pin 38 is pushed upward by the action of the movable cam 45 and the slot 14 when the non-interference position is reached.
Enter a.

Next, the strip material 10 is the inner diameter guide tube 2
6 and the squeeze ring 30 regulate the inner and outer diameters, and are spirally wound and cut by the cutting device 42 when stacked to a predetermined thickness (length). At this time, first, the strip material 10 is first introduced into the introducing portion 26 of the inner diameter guide 26.
It is wound from the tip (small diameter portion) of a and then gradually descends to the large diameter portion (downward) as the winding progresses.
The inner diameter of the strip material 10 is gradually expanded and regulated according to the winding stage, and finally, the inner diameter of the strip material 10 is formed to correspond to the outer diameter of the forming portion 26b.

Then, the strip material 10 laminated by the pressure pad 34 is pressed from below to be caulked to form a wound stator iron core 60 as shown in FIG. Then, the pressure pad 34 is pulled down, and the formed wound stator core 60 is discharged and conveyed.

The present invention is not limited to the above embodiment, and for example, as shown in FIG. 7, a movable pin fixing cam 70 is provided on the upper portion of the movable pin 46 and is slid to the left and right. By doing so, the basic position of the movable pin 46 may be restricted. That is, after the strip material 10 has begun to enter and be wound into the device 20, the movable pin fixing cam 70 is slid to the right in the drawing to guide the guide pin 38.
The guide pin 38 by forcibly pulling it up.
Does not contribute to the driving of the strip material 10 thereafter. With this configuration, the life of the movable cam 45 and the movable pin 46 can be significantly extended.

Further, in the embodiment, the winding guide pin is also used for the first winding. However, as shown in FIG. 1, the first winding drive is provided separately from the winding guide pin. Even if a pin mechanism is installed, the same operation can be performed. In this case, it is preferable to use a means for forcibly pulling up the strip material 10 by the above-described movable pin fixing cam 70 so as not to contribute to the subsequent winding of the strip material 10 when the winding is started.

[0023]

As described above, in the winding stator iron core manufacturing apparatus according to the present invention, the strip material moves on the circumference of the strip material concentric with the winding center of the strip material and enters the slot of the strip material. A guide pin that drives the material to wind, fixed cam means that contacts the upper part of the guide pin and moves the guide pin down so that the moving guide pin enters the slot of the strip material, and moves straight in the vicinity of the strip material introduction portion. When the strip material and the guide pin interfere with each other, since the guide pin is provided with a buffering means for retracting the guide pin upward from the cam surface of the fixed cam means, the stator core to be manufactured has an indentation or a bending caused by the guide pin. There is an effect that can prevent.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view showing a structure of a main part of a winding stator iron core manufacturing apparatus according to an embodiment of the present invention.

FIG. 2-1 is a cross-sectional view (partially perspective view) showing a structure of a winding stator iron core manufacturing apparatus according to an embodiment.

2-2 is a sectional view taken along line BB of FIG. 2-1.

FIG. 3 is a perspective view showing a configuration of a wound stator iron core manufactured by the manufacturing apparatus according to the embodiment.

FIG. 4 is an explanatory diagram for explaining the operation of the embodiment.

FIG. 5 is a perspective view showing the structure of a part (cutting device) of the manufacturing apparatus according to the embodiment.

FIG. 6 is a perspective view showing a structure of a part (cam mechanism) of the manufacturing apparatus according to the embodiment.

FIG. 7 is an enlarged cross-sectional view showing a structure of a main part of a winding stator iron core manufacturing apparatus according to another embodiment of the present invention.

FIG. 8 is an enlarged plan view for explaining the operation of the conventional winding stator iron core manufacturing apparatus.

FIG. 9 is an enlarged side view (partial cross section) for explaining the operation of the conventional winding stator iron core manufacturing apparatus.

[Explanation of symbols]

 10 strip material 14 comb-shaped portion 20 winding stator iron core manufacturing device 22 rotary spindle 24a, 24b bevel gear 26 inner diameter guide cylinder 28 molding plate 30 squeeze ring 32 piston 34 pressure pad 36 guide plate 38 drive pin 40 cam mechanism 42 cut Device 43 Cam plate 44 Convex portion 45 Movable cam 46 Movable pin 48, 50 Spring

Claims (3)

[Claims] 1. A coiled stator iron core having a predetermined number of turns is manufactured by spirally winding a long strip material having one side formed into a comb shape, with the comb side surface inside. In a winding stator iron core manufacturing apparatus, a guide pin that moves on a circumference concentric with a winding center of the strip material and that drives the strip material to wind by entering into a gap of a comb-shaped portion of the strip material, Fixed cam means for lowering the guide pin so that the moving guide pin contacts the upper part of the guide pin and enters the gap of the comb-shaped portion of the strip material;
An apparatus for manufacturing a wound stator iron core, comprising: a cushioning means for retracting the guide pin above a cam surface of the fixed cam means when the strip material and the guide pin that travel straight ahead interfere with each other. 2. The winding stator iron core manufacturing apparatus according to claim 1, wherein the buffer means is a movable pin and a movable cam that are slidably supported in the vertical direction. 3. A coiled stator iron core having a predetermined number of windings is manufactured by spirally winding a long strip material having one side formed into a comb shape with the comb side surface inside. In a winding stator iron core manufacturing apparatus, a guide pin that moves on a circumference concentric with a winding center of the strip material, and that drives the strip material to wind by entering into a gap of a comb-shaped portion of the strip material, Fixed cam means for lowering the guide pin so that the moving guide pin comes into contact with the upper portion of the guide pin and enters the gap of the comb-shaped portion of the strip material, and in the vicinity of the introduction portion of the strip material into the device,
Buffer means for retracting the guide pin above the cam surface of the fixed cam means at the time of interference between the straight-moving strip material and the guide pin, and the buffer means after the strip material is introduced into the apparatus. An apparatus for manufacturing a wound stator iron core, comprising a standby means for holding the constituent movable pin at a retracted position.