KR102198315B1 - Apparatus for cutting and chamfering insulation film - Google Patents

Abstract

The present invention relates to an apparatus for cutting and chamfering an insulation film, which can simultaneously cut and chamfer an insulation film. The apparatus cuts an insulation film which is folded while being transported into unit insulation films to be inserted into a slot of a stator, and comprises: a body having a film insertion line of a slot shape to insert a folded insulation film therethrough; a first slot die protruding in the film insertion line and having a slot shape to hold and support the insulation film inserted into the film insertion line; a first jig having a flat shape to be coupled to the body, and having a die hole of a slot shape formed at the center thereof to form a first jig line of the same shape as the film insertion line while the first slot die is inserted thereinto; a second jig having a flat shape to be coupled to the first jig, and having a second jig line of the same shape as the first jig line; and a cutting unit slidably coupled to the body, wherein a cutter provided on an upper portion thereof simultaneously cuts and chamfers an insulation film clamped across the first jig and the second jig while passing between the first jig and the second jig to make unit insulation films.

Description

Insulation film cutting and chamfering insulation film

The present invention relates to an insulating paper cutting and chamfering apparatus, and more particularly, to an apparatus for processing an insulating film inserted into a stator slot of a motor.

In general, a motor consists of a rotor and a stator. Here, the stator includes a stator core having a plurality of teeth protruding and having a slot, which is a space formed between adjacent teeth, and a coil is wound around each tooth so that the rotor rotates due to electromagnetic characteristics.

In general, the coil and the core must be insulated from each other, but the insulating method includes applying an insulating coating material to the core or applying a separate insulator.

In addition, in the case of a small motor, since the size of the slot is reduced, an insulating film method that occupies less space and has good insulation performance has recently been widely used. This insulating film method is a method in which the inner circumferential surface of the slot is insulated by closely contacting the inner circumferential surface of the slot with a thin insulating film, and can be particularly useful in small motors or BLDC centralized winding motors that require high efficiency and small size.

However, since the size of the slot is smaller in the smaller motor, it is not easy to bend and insert the insulating film into the slot in a slot shape. In addition, the insulating film uses an insulating polymer resin, which is a very difficult operation to cover the entire inner circumference of the slot by bending it into a slot shape due to its generally strong recovery power. There is this.

In addition, the conventional insulating film inserting apparatus supplies insulating paper in a vertical direction. With this type of configuration, it is not easy to insert an insulating film in which the corners and both ends are folded.

In order to solve these problems, an insulating film inserting apparatus and method for inserting an insulating film have been proposed.

Specifically, according to Korean Patent Registration 10-1657469 (June 2016), "The insulating film supplied from the supply unit 10 in which the supply reel 11 in which the insulating film 150 is wound around the main body 1 is installed. A bending line forming unit 20 for forming a bending line on the 150); the bending line forming unit for transferring the insulating film 150 by inserting the insulating film 150 between the first step motor 31 and the roller 32 A transfer part 30 installed on one side of the 20; a punching part 40 provided with a punching press 41 forming a corner part 103 on the insulating film 150 on which the bending line is formed; an insulating film having the corner part A second heating unit 51 for heating the insulation film and an end folding unit 50 in which a folding unit 52 for folding both ends of the insulating film is installed; a cutter 61 for cutting along the cutting line of the insulating film, A slot-shaped die 62 on which the unit insulating film 100 cut from the insulating film is placed, an upper and side press 65 for bending and fixing the upper and side portions of the unit insulating film 100, and the fixed unit insulation A film insertion part 60 comprising a pusher 66 for pushing the film 100; and a core part 70 for positioning the unit insulating film pushed out by the pusher to be inserted into the slot of the stator core; The core part 70 includes a rotation jig 71 on which the stator core 200 is seated and a second step motor 72 for rotating the rotation jig one step at a time, and the slot-shaped die ( 62) is an insulating film insertion device, characterized in that heated by the third heating unit 63 is disclosed.

1 is a plan view showing the overall structure of the prior art described above.

According to this prior art, there is an effect of automatically supplying and cutting the insulating film while transferring, and automatically inserting the cut unit insulating film into the slots of the stator core.

However, in the case of the prior art, as a result of actual operation, since the punching portion forms corners on both sides of the insulating film, the end folding portion folds both ends of the insulating film, and then cuts the insulating film with a cutter of the film insertion portion. When folding, there is a problem that cutting is performed while both corners do not face each other accurately.

That is, the cutting line connecting the opposite vertices must be accurately cut in a state where both corners are accurately formed in a rhombus, but there is a problem in that the cutting is incorrectly performed in a state where the corners are shifted from each other after folding.

In addition, when cutting, the top of the folded insulating film was crushed, causing the cutting line to shift.

-Republic of Korea Patent Registration 10-1657469 (2016.9.8.) "Insulation film carrier method stator core insulating film insertion device and method" -Korean Patent Registration 10-1455873 (October 22, 2014) "Insulation film insertion device and method of stator core"

Accordingly, the present invention is to solve the above-described problems, and an object of the present invention is to provide an insulating film cutting and chamfering apparatus capable of performing chamfering while cutting the insulating film.

In the device for cutting and chamfering the insulating film according to the present invention for achieving the above object, in the device for cutting the insulating film folded while being transported into a unit insulating film so that it can be inserted into the slot of the stator, the folded insulating film penetrates A body having a slot-shaped film insertion line to be inserted; A first slot die protruding from the inside of the film insertion line and formed in a slot shape to mount and support the insulating film inserted through the film insertion line; A first jig formed in a flat plate shape, coupled to the body, and formed with a slot-shaped die hole in the center to form a first jig having the same shape as the film insertion line while the first slot die is inserted; A second jig formed in a flat plate shape, coupled to the first jig, and having a second jig having the same shape as the first jig; Slidably coupled to the body, a cutter and a punch provided at the top pass between the first jig and the second jig while cutting the insulating film clamped across the first jig and the second jig and chamfering at the same time. It may be made including a; cut to make a unit insulating film.

Here, the cutting portion is accommodated in the guide jaws formed on both sides of the body and slides, and a slider having a storage hole for accommodating the first jig and the second jig is formed in the center, and is provided on the inner upper end of the storage hole and the It may be composed of a cutter that cuts the insulating film while passing between the first jig and the second jig, and a punch that is provided on the upper side of the cutter and has a'◇' shape to punch the cut insulating film to perform chamfering. .

In addition, a first punch groove and a second punch groove each having a V-shaped cross section may be formed opposite each other so that the punch can be inserted into the upper portion of the first jig and the second jig.

In addition, a protruding partition wall may be formed in the upper center of the first slot die to separate and separate both sides of the insulating film inserted into the first jigline.

According to the present invention having the above configuration, it is possible to perform chamfering while cutting the folded insulating film.

Therefore, the insulating film can be accurately cut without being crushed or the cutting line being cut incorrectly. That is, there are almost no defective products.

1 is a plan view showing the overall structure of the prior art
2 is a perspective view showing the overall appearance of an insulating film cutting and chamfering apparatus according to an embodiment of the present invention
Figure 3 is an exploded perspective view of the present invention shown in Figure 2
Figure 4 is a longitudinal sectional view of the present invention shown in Figure 2
Figure 5 is a front view of the present invention shown in Figure 2
6 is a perspective view showing the shape of the cutter of the present invention
7 is an operating state diagram of the present invention
Figure 8 is a schematic diagram schematically showing the operating state of Figure 7

Hereinafter, an embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

For reference, the description with reference to the drawings is for easier understanding of the present invention, and the scope of the present invention is not limited thereto. Further, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted.

FIG. 2 is a perspective view showing the overall appearance of an insulating film cutting and chamfering apparatus according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of the present invention shown in FIG. 2.

The present invention is an existing device capable of inserting a unit insulating film discharged after performing folding, chamfering, and cutting processes while advancing and transporting the strap-shaped insulating film by 1 pitch, and inserting the discharged unit insulating film into the slot of the stator. It relates to an apparatus for cutting and chamfering an insulating film having a structure capable of cutting and chamfering at the same time by unifying the process of in one process.

Referring to the diagram, the present invention may be largely configured to include a body 100, a first slot die 200, a first jig 300, a second jig 400, and a cutting portion 500.

First, the body 100 will be described with reference to FIGS. 4 and 5 together. 4 is a longitudinal sectional view of the present invention shown in FIG. 2, and FIG. 5 is a front view of the present invention shown in FIG. Here, FIG. 5 is a front view with the second jig removed.

The body 100 may have a rectangular parallelepiped block shape.

A film insertion line 110 is formed in the center of the body 100 so that the folded insulating film F can be inserted therethrough. That is, the film insertion line 110 has a slot shape. For reference, the slot has a trapezoidal shape in which the long side is an arc shape.

At this time, the width of the film insertion line 110 formed on the rear side is relatively larger than the width of the film insertion line 110 formed on the front of the body 100. This is to guide the folded insulating film (F) to be easily inserted into the film insertion line (110).

In other words, since the rear side of the body 100 is an entrance through which the insulating film F is inserted, it is preferable that the width of the film insertion line 110 is formed so that the end of the insulating film F is not caught while being inserted. Do.

In addition, guide jaws 120 are formed on both sides of the body 100 along the vertical direction.

The guide jaw 120 is formed higher than the front surface of the body and guides the linear reciprocating movement while accommodating the slider 510 to be described later.

Next, the first slot die 200 will be described.

The first slot die 200 is formed to protrude from the center of the front surface of the body 100.

Specifically, since it is formed so as to be accommodated inside the film insertion line 110 formed in the body 100, it may have substantially the same shape as the cross section of the slot.

Accordingly, the insulating film F inserted through the film insertion line 110 is mounted and supported while surrounding the first slot die 200.

In addition, a partition wall 210 protruding upward is formed in the upper center of the first slot die 200.

The partition wall 210 is separated from each other so that both sides of the inserted insulating film F face each other but are not in contact, and at the same time, both sides of the insulating film F are accurately seated on the first slot die 200 so that they do not deviate from each other. Position it so that it does not.

In addition, a guide groove 220 having a V-shaped cross section from the top to the center of the first slot die 200 is formed. This may function to guide while being inserted when the punch 530 to be described later descends.

Next, the first jig 300 will be described.

The first jig 300 may have a rectangular flat plate shape and is coupled to the center of the body 100, and is coupled while receiving the first slot die 200.

To this end, a die hole 310 having the shape of the first slot die 200 may be formed in the center of the first jig 300. At this time, as the first slot die 200 is inserted into the die hole 310, a gap is formed between the die hole 310 and the first slot die 200, which gap is inserted into the film. It becomes the first jigline 320 having the same shape as the line 110.

Accordingly, the insulating film F inserted through the film insertion line 110 passes through the first jigline 320 and is seated on the first slot die 200.

In addition, a first punch groove 330 having a V-shaped cross section is formed from the upper end of the first jig 300 to the die hole 310.

Therefore, in the state in which the first slot die 200 is inserted and received in the die hole 310, the first punch groove 330 and the guide groove 220 communicate with each other, and punching of the punch 530 to be described later Can guide the operation.

Next, the second jig 400 will be described.

The second jig 400 may also have a rectangular flat plate shape, and may be coupled to the front surface of the first jig 300.

At this time, the first jig 300 and the second jig 400 are not combined so as to be completely in close contact, but are spaced apart to form a gap. This gap is preferably formed to be slightly longer than the thickness of the cutter 520 to be described later. Accordingly, the cutter 520 may smoothly pass between the first jig 300 and the second jig 400.

Further, a second jig line 410 having the same shape as the first jig line 320 is formed in the center of the second jig 400. For this reason, a second slot die 420 having the same shape as the first slot die 200 is naturally formed inside the second jigline 410.

Like the first jig 300, a second punch groove 430 having a V-shaped cross section is formed from the top to the bottom of the second jig 400.

Here, when the first jig 300 and the second jig 400 are coupled, the first punch groove 330 and the second punch groove 430 face each other to form a'◇' shape hole. . The punch 530 is guided while being inserted into this hole.

For reference, the second punch groove 430 is formed to the center of the second slot die 420 by passing through the upper end of the second jigline 410. That is, the length of the second punch groove 430 may be formed equal to the combined length of the first punch groove 330 and the guide groove 220.

Next, the cutting part 500 will be described with reference to FIG. 6. 6 is a perspective view showing the shape of the cutter of the present invention.

The cutting part 500 is a folded insulating film (F) inserted while penetrating the body 100, the first jig 300, the second jig 400, the first jig 300 and the second jig ( As a configuration for cutting and chamfering while passing through 400), a slider 510, a cutter 520, and a punch 530 may be included.

The slider 510 is formed in a rectangular flat plate shape, is accommodated and seated between the guide jaws 120 formed on the body 100, and is operated to reciprocate and slide along the guide jaw 120.

In this case, a storage hole 511 is formed in the center of the slider 510.

The storage hole 511 may be accommodated while the first jig 300 and the second jig 400 pass. Accordingly, the operating distance (stroke distance) of the slider 510 is determined by a length corresponding to the vertical distance of the storage hole 511.

A cutter 520 for cutting the insulating film F is provided at an upper end of the storage hole 511.

The cutter 520 may be installed downward in the center of the cutter support member 521 installed across the storage hole 511.

Further, the cutter 520 may be formed in a shape having a horizontal blade, but preferably, as shown in FIG. 5, it is preferable to have a triangular shape in which the center forms a vertex.

Because the vertices of the cutter 520 are folded and first enter between both sides of the insulating film F facing each other, both edges of the vertices start cutting from both sides of the insulating film F, so the cutting operation is very easy. That is, it can be cut very cleanly without burrs.

Meanwhile, a punch 530 is provided on the upper side of the cutter 520.

The punch 530 performs a chamfer operation while directly punching the cut insulating film F.

That is, the cut insulating film (F) is in a state in which the line unit insulating film (F1) and the subsequent unit insulating film (F2) contact to form a cutting line (L). Chamfering is performed by punching the punch 530 in a'◇' shape across the film (F) and the subsequent unit insulating film (F).

To this end, the punch may have a'◇' shape in cross section as shown. In addition, a punching blade 532 having a'∧' shape may be formed at the end of the punch.

At this time, the punch 530 is coupled while being mounted on the upper end of the cutter support member 521, and the cutter support member 521 is coupled to cross the center of the punching blade 532.

Accordingly, one half of the punch 530 makes a'V' groove in the line-based insulating film F1 with the center of the cutting line L generated while the cutter 520 cuts the insulating film F, and the other side After half, chamfering is performed by making a'V' groove in the unit insulating film F2.

For reference, the punch 530 may be fixed by a punch support member 531 having a'┏┓' shape coupled to an upper portion of the body 100.

Hereinafter, the operation of the present invention will be described with reference to FIGS. 7 and 8. 7 is an operating state diagram of the present invention, Figure 8 is a schematic diagram schematically showing the operating state of FIG.

First, through a preceding transfer and folding process (not shown), the two sides of the strap-shaped insulating film F are folded, and the cross section is processed into the same shape as the film insertion line 110.

The folded insulating film (F) is inserted into the film insertion line 110 formed on the rear surface of the body 100, and is continuously transferred to provide the first and second ji-grains 320 and 410. While penetrating, it is mounted while surrounding the first slot die 200 and the second slot die 420.

In this state, when the body 100 descends, the cutter 520 and the punch 530 also descend. First, the cutter 520 moves between the first jig 300 and the second jig 400. While passing through, the insulating film (F) is cut to form a unit insulating film.

Then, punching is performed while passing through the cutting line (L) where the linear unit insulating film (F1) and the subsequent unit insulating film (F2) contact as the punch 530 descends to perform punching to form a line unit insulating film (F1) and a subsequent unit insulating film. Chamfering is performed by forming grooves of each'V' shape in the film F2.

Thereafter, the body 100 rises again, and the line-based insulating film F1 is advanced, transferred, and inserted into the slot of the motor.

Then, the same process described above may be repeated while the unit insulating film F2 is positioned as a line unit insulating film.

Although the exemplary embodiments of the present invention have been described above with reference to the drawings, a person of ordinary skill in the field to which the present invention belongs will be able to perform various applications and modifications within the scope of the present invention based on the above contents. Therefore, the scope of the present invention is limited to the described embodiments and should not be determined, and should not be determined by the claims to be described later, but also by those equivalents to the claims.

100: body
110: film insertion line 120: guide chin
200: first slot die
210: bulkhead 220: guide groove
300: first jig 310: die hole
320: first jigline 330: first punch groove
400: second jig 410: second jig line
420: second slot die 430: second punch groove
500: cut 510: slider
511: storage hole 520: cutter
521: cutter support member 530: punch
531: punch support member 532: punching blade
F: Insulation film F1: Line unit insulation film
F2: After unit insulating film L: Cutting line

Claims (4)

In the device for cutting the insulating film folded while being transported into a unit insulating film so that it can be inserted into the slot of the stator,
A body having a slot-shaped film insertion line formed so that the folded insulating film can be inserted therethrough, wherein the width of the film insertion line formed on the rear side is larger than that of the film insertion line formed on the front side;
A first slot die protruding from the inside of the film insertion line and formed in a slot shape to mount and support the insulating film inserted through the film insertion line;
It consists of a flat plate and is coupled to the body, a slot-shaped die hole is formed in the center, and the first slot die is inserted to form a first jigline having the same shape as the film insertion line, and a punch is inserted at the top. A first jig having a first punch groove having a V-shaped cross section to be formed;
A second punch groove having a V-shaped cross section is formed in a flat plate shape and coupled to the first jig, and a second jigline having the same shape as the first jig is formed. A second jig formed opposite to the first punch groove;
A slider that is accommodated in guide jaws formed on both sides of the body and slides and has a storage hole for accommodating the first jig and the second jig is formed in the center; A cutter that cuts the insulating film clamped across the first jig and the second jig while passing between the 1 jig and the second jig to make a unit insulating film, and is provided on the upper side of the cutter and has a'◇' cross section. A cutting unit made of a punch for performing chamfering by punching the cut insulating film;
The insulating film cutting and chamfering apparatus comprising a; partition walls protruding from the upper center of the first slot die to separate and separate both sides of the insulating film inserted into the first jigline. delete delete delete

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