KR20210101816A - Insulation paper molding apparatus and manufacturing method using the same - Google Patents

Abstract

Disclosed are an insulating paper forming device and a manufacturing method using the same. According to an embodiment of the present invention, the insulating paper forming device forms insulating paper inserted into a slot of a hairpin type core. The insulating paper forming device comprises: an engraving and embossing forming unit that receives insulating paper uncoiled from an uncoiler and forms an engraved line or an embossed line in a set shape along the longitudinal direction of the insulating paper; a bending forming unit that receives the insulating paper, on which an engraved line or an embossed line is formed, from the engraving and embossing forming unit and automatically bends and forms the insulating paper along the engraved line or the embossed line in correspondence with a shape of the slot; and a cutting unit disposed in front of the bending forming unit and operated to cut the insulating paper when the insulating paper enters the bending forming unit by a set length.

Description

Insulation paper molding apparatus and manufacturing method using the same

The present invention relates to an insulating paper forming apparatus and a manufacturing method using the same, and more particularly, to an insulating paper forming apparatus capable of manufacturing multi-shaped insulating paper and a manufacturing method using the same.

In line with the global demand for greenhouse gas reduction regulations and fuel economy improvement of automobiles, research, development, and commercialization of eco-friendly automobile-related parts are being actively carried out in the automobile industry.

In addition, research and development to overcome the limitations of the existing internal combustion engine is being actively conducted.

On the other hand, while improving the efficiency of the existing internal combustion engine is important for improving the fuel efficiency of the vehicle, it is effective to reduce the weight of the vehicle.

In the prior art, a technology for bearing a part or all of the output of an internal combustion engine by applying a driving motor with higher efficiency than an internal combustion engine has been proposed. The accessory has a problem of not only having an upper weight, but also occupying a large volume.

Therefore, finished car manufacturers and eco-friendly parts manufacturers are developing technologies to reduce the weight and volume of eco-friendly parts in order to reduce the weight of eco-friendly vehicles and secure internal space. A hairpin winding method that can maximize the rate has been proposed.

The hairpin winding method includes manufacturing a stator core, preparing a coil, forming a coil into a specific shape, inserting an insulating paper into a slot of the stator core, and inserting a coil by placing a coil in a slot of the stator core. Step, including the step of welding by twisting one end of the coil.

Among them, the step of inserting the insulating paper into the slot of the stator core will be described in detail. The step of unwinding the insulating paper, the step of cutting the insulating paper to a set length, the step of molding the insulating paper into a set shape, and the step of inserting the insulating paper into the slot of the stator core automatically inserting.

The method of molding the stator insulating paper according to the prior art has a disadvantage in that it is configured to produce only a single-shaped product.

Accordingly, there is a problem in that the insulating paper molding machine must be re-manufactured for each specification of the stator core.

Matters described in this background section are prepared to enhance understanding of the background of the invention, and may include matters that are not already known to those of ordinary skill in the art to which this technology belongs.

An embodiment of the present invention is to provide an insulating paper molding apparatus capable of manufacturing multi-shaped insulating paper according to the specifications of the core and a manufacturing method using the same.

In one or more embodiments of the present invention, as an insulating paper forming apparatus for molding insulating paper to be inserted into a slot of a hairpin type core, the insulating paper uncoiled from the uncoiler is transferred and the insulating paper is engraved or embossed in a set shape along the longitudinal direction of the insulating paper. Bending molding that automatically bends the insulating paper along the intaglio or embossed line in correspondence with the shape of the slot by receiving the insulated paper on which the intaglio or embossed line is formed from the intaglio and embossed forming unit for forming a line, and the intaglio and embossed lines It is possible to provide an insulating paper forming apparatus including a unit, and a cutting unit disposed in front of the bending forming unit, and operating when the insulating paper enters the bending forming unit by a set length, and cutting the insulating paper.

In addition, the negative embossed forming unit is a case, disposed to correspond to the upper surface of the case and mounted on one side, a rotating support bar for changing the supply direction of the insulating paper, is disposed on one side of the case, and a plurality of first guides An upper roller having a blade rotatably fitted to the upper rotating shaft and in contact with the insulating paper passing through the rotating support rod, and disposed under one side of the case, and mounted to rotate relative to each other through the upper roller and gear, a plurality of second guides The blade is rotatably fitted to the lower rotation shaft and may include a lower roller configured to form an intaglio line or an embossed line on the insulating paper together with each of the first guide blades.

In addition, the first guide blade may include an embossed blade protruding outward or an engraved blade recessed inward.

In addition, the second guide blade may include an embossed blade protruding outward or an engraved blade recessed inward.

In addition, the bending molding unit is arranged elongated along the traveling direction of the insulating paper, an insertion space is formed therein to insert the insulating paper, and the insulating paper is inserted through the insertion space of the molding space connected to the insertion space. A molding body configured to be bent along the intaglio or embossed line along the inner wall, a first pusher part inserted into one side of the molding body to push the insulating paper into the molding space, the length of the molding body corresponding to the molding space A second pusher part configured to be slidable along the direction to push the insulating paper toward the slot, and disposed at the rear of the molded body, Corresponding to the shape of the slot as the bent insulating paper passes through the molded body It may include a molding die configured to be molded.

In addition, the first pusher unit is fitted with a first pusher tool through a plurality of first pusher grooves formed in the width direction of the molding body, and pushes the insulating paper supplied to the insertion space through the second pusher tool into the molding space. It may be configured to reciprocate in a given direction.

In addition, the second pusher part is fitted with a second pusher tool through a second pusher groove formed along the longitudinal direction of the molding body, and the insulating paper molded in the molding space through the second pusher tool is pushed toward the slot. It may be configured to reciprocate in a direction.

In addition, the molding frame has an inner area corresponding to the forming space at the front connected to the forming body, and the inner area becomes narrower toward the rear side to vary the size of the inner area at the rear portion connected to the slot. It may have a control means.

In addition, the adjusting means may be configured so that the inner area is variable through the adjusting block configured in the inside of the mold.

The insulating paper molding apparatus and the manufacturing method using the same according to an embodiment of the present invention can be shared regardless of the shape of the insulating paper changed for each specification of the core, thereby reducing the investment cost and the manufacturing process cost.

That is, the insulating paper forming apparatus and the manufacturing method using the same according to an embodiment of the present invention have a structure that can change the shape of the insulating paper by replacing each guide blade of the upper and lower rollers of the engraving and embossing forming unit to achieve a simple and fast work process. can

In addition, the effects obtainable or predicted by the embodiments of the present invention are to be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. That is, various effects predicted according to an embodiment of the present invention will be disclosed in the detailed description to be described later.

1 is an overall configuration diagram of an insulating paper forming apparatus according to an embodiment of the present invention.
Figure 2 is a configuration diagram of the engraving forming unit applied to the insulating paper forming apparatus according to an embodiment of the present invention.
3 is a block diagram of a bending forming unit applied to an insulating paper forming apparatus according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view taken along line AA of FIG. 3 .
FIG. 5 is a cross-sectional view taken along line BB of FIG. 3 .
6 is a cross-sectional view taken along CC of FIG. 3 .
7 is a configuration diagram of a forming mold applied to an insulating paper forming apparatus according to an embodiment of the present invention.
8 is a flowchart of a molding method of insulating paper according to an embodiment of the present invention.
9 is an example of insulating paper molded using an insulating paper forming apparatus according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same or similar components are described with the same reference numerals throughout the specification.

In addition, in the following description, the names of the components are divided into the first, the second, and the like, because the names of the components are the same to distinguish them, and the order is not necessarily limited thereto.

1 is an overall configuration diagram of an insulated paper molding apparatus according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of an insulated paper molding unit applied to an insulated paper molding apparatus according to an embodiment of the present invention.

The insulating paper forming apparatus according to an embodiment of the present invention is for forming the insulating paper 5 inserted into the slot 3 of the hairpin type core.

The insulating paper 5 is for insulation between the core 1 and a hairpin (not shown) inserted into the slot 3 of the core.

Referring to FIG. 1 , an insulating paper forming apparatus 10 according to an embodiment of the present invention includes an intaglio and embossed forming unit 30 , a cutting unit 40 , and a bending forming unit 50 .

In general, in the industry, the longitudinal direction of the vehicle body is referred to as the T direction, the vehicle width direction is referred to as the L direction, and the height direction of the vehicle body is referred to as the H direction.

However, in the embodiment of the present invention, the LTH direction as described above is not set as the reference direction, but the front and rear, left and right, and up and down directions are set as the reference direction based on the drawings.

The definition of the reference direction as described above is a relative meaning, and since the direction may vary depending on the reference position of the present molding apparatus 10 or the reference position of the assembly, the reference direction is necessarily limited to the reference direction of this embodiment. no.

Hereinafter, the uncoiler 20 side is defined as the front side, the molding frame 80 side of the bending forming unit 50 is defined as the rear side, and the front and rear directions in which the insulating paper 5 proceeds are set as the reference direction, , the upper part is defined as the upper part, the upper part, the upper surface, and the upper part, and the lower part part is defined as the lower part, the lower part, the lower part, and the lower part.

The engraving and embossing forming unit 30 is positioned in front of the forming apparatus 10 to receive the insulating paper 5 wound around the uncoiler 20 .

Referring to FIG. 2 , the engraving and embossing forming unit 30 includes a case 31 and a rotation support rod 33 disposed to correspond to the upper surface of the case 31 .

The rotation support rod 33 is rotatably mounted on the case 31 , and changes the supply direction of the insulating paper 5 supplied from the uncoiler 20 between the upper roller 35 and the lower roller 37 . configured to be supplied to

The upper roller 35 is disposed above one side of the case 31 .

The upper roller 35 includes a plurality of first guide blades 353 that are rotatably fitted to the upper rotating shaft 351 .

In this case, the plurality of first guide blades 353 may be selectively spaced apart from each other through the space blade 355 .

The plurality of first guide blades 353 may be applied by changing the specifications of the insulating paper 5 .

For example, as the first guide blade 353 , any one of an outwardly protruding embossed blade or an inwardly concave engraved blade may be applied.

In addition, the upper roller 35 may be fixed through the end cover 357 so that the first guide blade 353 and the space blade 355 are not separated.

And a lower roller 37 is configured at a lower portion of the upper roller 35 , and is mounted on a lower portion of one side of the case 31 .

The lower roller 37 is mounted to rotate relative to the upper roller 35 and the gear 39 .

The lower roller 37 includes a plurality of second guide blades 373 that are rotatably fitted to the lower rotating shaft 371 .

At this time, the plurality of second guide blades 373 may be selectively spaced apart from each other through the space blade 375 like the upper roller 35 .

The plurality of second guide blades 373 may be changed and applied according to specifications of the insulating paper 5 corresponding to the first guide blade 353 .

For example, if the first guide blade 353 is an embossed blade, the second guide blade 373 applies an engraved blade, and if the first guide blade 353 is an engraved blade, the second guide blade (373) applies an embossed blade.

In addition, the first guide blade 353 and the second guide blade 373 can be replaced and applied differently depending on the shape of the insulating paper 5 inserted into the slot 3 , and the same number is applied to each.

In addition, the lower roller 37 may be fixed through the end cover 377 so that the second guide blade 373 and the space blade 375 are not separated.

The cutting unit 40 is configured at the rear of the engraving and embossing forming unit 30 .

The cutting unit 40 may be applied to cut the insulating paper 5 by a set length.

And the bending forming unit 50 is configured in the rear of the cutting unit (40).

3 is a block diagram of a bending forming unit applied to an insulating paper forming apparatus according to an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along AA of FIG. 3, FIG. 5 is a cross-sectional view taken along BB of FIG. 3, and FIG. 6 is a cross-sectional view taken along CC of FIG. 3 .

3 to 6 , the bending forming unit 50 includes a molding body 51 in which the insulating paper 5 on which the intaglio or embossed lines are formed from the intaglio and embossed forming unit 30 is inserted therein. .

The molded body 51 is preferably formed to be at least longer than the length of the core (1).

An insertion space 53 to which the insulating paper 5 is supplied is formed long along one side in the longitudinal direction in the molded body 51 .

A molding space 55 connected to the insertion space 53 along the other side in the longitudinal direction is formed inside the molding body 51 .

In addition, a plurality of first pusher grooves 57 that cross the insertion space 53 in the width direction are formed inside the molding body 51 .

The first pusher grooves 57 are spaced apart from each other at regular intervals along the longitudinal direction of the molded body 51 , and may be formed in, for example, four places.

The first pusher unit 60 is mounted in the first pusher groove 57 , and in more detail, the rod-shaped first pusher tool 61 is inserted to be slidably movable, respectively.

Although the first pusher groove 60 and the first pusher tool 61 have been described as an example in which four are formed, respectively, the present invention is not limited thereto, and the number may be changed as needed.

The first pusher tool 61 passes through the insertion space 53 and is inserted before the forming space 55 .

Each of the first pusher tools 61 is connected and configured to slide in left and right directions along the first rail 63 through a first connection block 65 mounted on the first rail 63 . do.

And a second pusher groove 59 is formed at a position corresponding to the molding space 55 in the longitudinal direction in the molding body 51 .

A second pusher unit 70 is mounted in the second pusher groove 59 , and in more detail, a plate-shaped second pusher tool 71 is slidably inserted therein.

The second pusher tool 71 is connected to the second rail ( 73) and is configured to slide in the forward and backward directions.

The second pusher unit 70 serves to push the insulating paper that is first bent and molded in the forming space 55 through the first pusher unit 60 toward the forming mold 80 disposed at the rear thereof.

7 is a configuration diagram of a forming mold applied to an insulating paper forming apparatus according to an embodiment of the present invention.

Referring to FIG. 7 , the molding frame 80 is configured at the rear of the molding body 51 .

The molding frame 80 is configured to be narrower left and right toward the rear side.

That is, the inside of the molding frame 80 is formed so that the front connected to the molding body 51 has an inner area corresponding to the molding space 55, and the inner area becomes narrower toward the rear side.

In addition, the adjusting means 81 is configured in the rear portion of the mold 80, that is, the rear portion connected to the slot 3 to change the size of the inner area.

The adjusting means 81 includes an adjusting block 83 configured inside the mold 80 so that the inner area into which the insulating paper 5 is inserted is variable.

The control block 83 can adjust the position of the control block 83 through the tightening of the screw 85 to adjust the inner area of the mold 80 to correspond to the size of the slot 3 .

That is, the insulating paper 5 can be molded for each slot specification through the adjusting means 81 of the molding die 80 .

Next, a method of molding the insulating paper 5 using the insulating paper forming apparatus 10 according to an embodiment of the present invention will be described.

8 is a flowchart of a molding method of insulating paper according to an embodiment of the present invention.

Referring to FIG. 8 , the insulating paper 5 wound around the uncoiler 20 is supplied between the upper roller 35 and the lower roller 37 by changing the supply direction through the rotating support rod 33 .

An intaglio line or an embossed line is drawn along the longitudinal direction of the insulating paper 5 in a set shape through the first guide blade 353 and the second guide blade 373 of the upper roller 35 and the lower roller 37, respectively. molding (S10).

The insulating paper 5 on which the intaglio or embossed lines are formed from the intaglio and embossed forming unit 30 is supplied to the bending forming unit 50 .

When the insulating paper 5 is supplied to the bending forming unit 50 by a certain length, the insulating paper 5 is cut through the cutting unit 40 (S20).

At this time, it is preferable to cut the insulating paper 5 by a predetermined length corresponding to the length of the core 1 .

Then, while pressing the insulating paper 5 inserted into the insertion space 53 of the bending molding unit 50 into the molding space 55 through the first pusher unit 60, the engraved line or embossed line on the insulating paper 5 Automatic bending along the line (refer to FIGS. 4 and 5).

That is, the first pusher tool 61 of the first pusher unit 60 presses the insulating paper 5 supplied to the insertion space 53 into the molding space 55 while pressing the inner wall of the molding space 55 . It is to automatically first bend and mold along the intaglio line or the embossed line (S30).

Next, the insulating paper 5 bent in the forming space 55 is moved toward the forming frame 80 through the second pusher 70 .

That is, the insulating paper 5 that is first bent and molded in the forming space 55 is moved toward the forming mold 80 through the second pusher tool 71 of the second pusher unit 70 .

The insulating paper 5 is formed into a set shape to correspond to the slot 3 by secondary bending while passing through the forming mold 80 (S40).

In other words, the insulating paper 5 passes through the molding die 80 whose inner area is narrowed to the rear side, and is placed in the slot 3 by the adjusting means 81 configured in the rear part of the molding die 80 . molded into the corresponding set shape.

The insulating paper 5 molded as described above may be directly inserted into the slot 3 of the core 1 through the second pusher part 70 (S50).

When the insulating paper 5 is inserted into the slot 3, the core 1 rotates by a set angle, and by repeating the process of continuously inserting the insulating paper 5 into the next empty slot 3, the core The insulating paper 5 can be inserted in the entire slot 3 of (1).

9 is an example of insulating paper molded using an insulating paper forming apparatus according to an embodiment of the present invention.

Referring to FIG. 9 , a cross-section of the insulating paper 5 is shown, and the shape of the insulating paper 5 may be varied according to the specification of the core 1 .

At this time, it is possible to set the intaglio line and the embossed line according to the bent portion of the insulating paper 5, and for this, the first guide applied to the upper roller 35 and the lower roller 37 of the intaglio forming unit 30 The blade 353 and the second guide blade 373 may be respectively changed and applied.

For example, referring to FIG. 9(A), four bending lines are required, four embossed first guide blades 353 are required, and four engraved second guide blades 373 are required. .

In addition, the space blades 355 and 375 may be installed between each of the first guide blades 353 and the second guide blades 373 to set the spaced lengths therebetween.

Referring to FIG. 9(B), 6 bending lines are required, 5 embossed first guide blades 353 are required, and correspondingly, 5 engraved second guide blades 373 are required, One first guide blade 353, which is an engraved blade, is required in the middle, and one second guide blade 373 that is an embossed blade is required correspondingly.

As in FIG. 9(A) , spaced blades 355 and 375 may be installed between the first guide blade 353 and the second guide blade 373 to set the spaced length.

9(C) and 9(D) can be set in the same way.

It is not limited to the shape of the insulating paper shown in FIG. 9, The shape can be changed as needed.

On the other hand, by installing two or more places of the insulating paper forming apparatus 10 as described above, it can be configured to insert the insulating paper 5 into the slot 3 of the core 1 in a short time, thereby reducing the overall cycle time.

Therefore, the insulation paper molding apparatus and the manufacturing method using the same according to an embodiment of the present invention can be shared without having to provide the molding apparatus 10 differently according to the shape of the insulation paper 5 changed for each specification of the core 1, so that investment cost and The manufacturing process cost can be reduced.

In addition, the insulating paper forming apparatus and the manufacturing method using the same have an effect that the position change of each guide blade (353, 373) of the upper and lower rollers (35, 37) of the intaglio and embossed forming unit (30) is flexible.

In addition, the insulating paper forming apparatus and the manufacturing method using the same are performed by naturally bending the insulating paper 5 through the bending forming unit 50 and then inserting the insulating paper 5 into the slot 3 of the core 1 before inserting the forming mold ( 80), by ensuring the reliability of the bending line once more, the commercial property can be improved.

Although the above has been described with reference to a preferred embodiment of the present invention, those of ordinary skill in the art may change the present invention in various ways within the scope not departing from the spirit and scope of the present invention described in the claims below. It will be appreciated that modifications and variations are possible.

1: Core 3: Slot
5: Insulation paper 10: Molding device
20: uncoiler 30: yin and yang angle forming unit
31: case 33: rotation support bar
35: upper roller 351: upper rotating shaft
353: first guide blade 355, 375: space blade
357, 377: end cover 37: lower roller
371: lower rotation shaft 373: second guide blade
39: gear 40: cutting unit
50: bending molding unit 51: molding body
53: insertion space 55: molding space
57: first pusher groove 59: second pusher groove
60: first pusher unit 61: first pusher tool
63: first rail 65: first connection block
70: second pusher unit 71: second pusher tool
73: second rail 75: second connection block
80: mold 81: control means
83: control block 85: screw

Claims (15)

An insulating paper forming apparatus for molding insulating paper inserted into a slot of a hairpin type core, comprising:
an intaglio-embossed forming unit that receives the insulating paper uncoiled from the uncoiler and forms an engraved line or an embossed line in a set shape along the longitudinal direction of the insulating paper;
a bending forming unit for receiving the insulating paper on which the intaglio line or the embossed line is formed from the intaglio forming unit and automatically bending and forming the insulating paper along the intaglio line or the embossed line in correspondence with the shape of the slot; and
a cutting unit disposed in front of the bending forming unit and operated to cut the insulating paper when the insulating paper enters the bending forming unit by a set length;
Insulation paper forming apparatus comprising a. According to claim 1,
The engraving forming unit is
case;
a rotating support rod disposed to correspond to the upper surface of the case, mounted on one side, and configured to change the supply direction of the insulating paper;
an upper roller disposed on one side of the case and having a plurality of first guide blades rotatably fitted to the upper rotating shaft and in contact with the insulating paper passing through the rotating support rod; and
It is disposed on the lower side of one side of the case, is mounted to rotate relative to the upper roller and the gear, and a plurality of second guide blades are rotatably fitted to the lower rotation shaft to be engraved on the insulating paper together with each of the first guide blades. a lower roller configured to form a line or an embossed line;
Insulation paper molding apparatus comprising a. 3. The method of claim 2,
The first guide blade is an insulated paper forming apparatus, characterized in that it includes an embossed blade protruding outward or an intaglio engraved blade. 3. The method of claim 2,
The second guide blade is an insulated paper forming apparatus, characterized in that it includes an embossed blade protruding outward or an intaglio engraved blade. According to claim 1,
The bending forming unit is
The insulating paper is arranged long in the traveling direction, an insertion space is formed so that the insulating paper is inserted therein, and the intaglio line or a molding body configured to be bent along an embossed line;
a first pusher part inserted into one side of the molding body to push the insulating paper into the molding space;
a second pusher part configured to be slidably movable in the longitudinal direction of the molding body corresponding to the molding space to push the insulating paper toward the slot; and
a molding frame disposed at the rear of the molding body and configured to be molded to correspond to the shape of the slot as the insulating paper bent through the molding body passes;
Insulation paper forming apparatus comprising a. 6. The method of claim 5,
The first pusher unit
Each of the first pusher tools is fitted through a plurality of first pusher grooves formed in the width direction of the molding body, and the insulating paper supplied to the insertion space through the first pusher tool is configured to reciprocate in the direction of pushing the insulating paper into the molding space. Insulation paper forming device. 6. The method of claim 5,
The second pusher unit
A second pusher tool is fitted through a second pusher groove formed along the longitudinal direction of the molding body, and the second pusher tool is configured to reciprocate in a direction for pushing the insulating paper molded in the molding space toward the slot side Insulation paper forming device. 6. The method of claim 5,
The mold is
The front side connected to the molding body has an inner area corresponding to the molding space, and the inner area becomes narrower toward the rear side. molding device. 9. The method of claim 8,
The control means is
An insulating paper forming apparatus configured to have an internal area variable through a control block configured inside the forming mold. The method for molding insulating paper using the insulating paper forming apparatus according to any one of claims 1 to 9,
A first step of transferring the insulating paper wound on the uncoiler to the intaglio forming unit to form an intaglio line or an embossed line on the insulating paper;
a second step of supplying the insulating paper on which the intaglio line or the embossed line is formed from the intaglio forming unit to the bending forming unit by a predetermined length, and then cutting the insulating paper through the cutting unit;
a third step of automatically bending and forming the insulating paper inserted into the insertion space of the bending molding unit by the intaglio or embossed line while pressing the insulating paper into the molding space through the first pusher;
a fourth step of moving the folded insulating paper in the forming space toward the forming die through the second pusher;
a fifth step of being molded into a set shape to correspond to the slot while passing through the mold;
A molding method of insulating paper comprising a. 11. The method of claim 10,
The first step is
A step of supplying the insulating paper wound on the uncoiler between the upper roller and the lower roller by changing the supply direction through the rotating support rod; and
forming an intaglio line or an embossed line on the insulating paper in a set shape through each of the first guide blades and the second guide blades of the upper roller and the lower roller;
A molding method of insulating paper comprising a. 11. The method of claim 10,
The second step is
The forming method of insulating paper, the step of cutting the insulating paper by a predetermined length corresponding to the length of the core. 11. The method of claim 10,
The third step is
The first pusher tool of the first pusher part presses the insulating paper supplied to the insertion space into the molding space while riding the inner wall of the molding space and automatically performing primary bending and molding along the intaglio or embossed lines. Way. 14. The method of claim 13,
The fourth step is
The forming method of insulating paper is a step of moving the insulating paper, which is first bent and molded in the forming space, toward the forming die through the second pusher tool of the second pusher part. 15. The method of claim 14,
The fifth step is
The forming method of insulating paper, which is a step of being molded into a set shape corresponding to the slot by an adjusting means configured in the rear portion of the forming die while passing through the forming die whose inner area is narrowed to the rear side.

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