KR20190051169A - Apparatus for Manufacturing Adhesive Lamination Core by Spraying - Google Patents

Abstract

According to the present invention, a spray-type apparatus for manufacturing an adhesive laminated core (100) comprises an upper mold (10) and a lower mold (20), sequentially forms laminar members (200-1) through a plurality of piercing processes on strips (200) sequentially transferred on an upper portion of the lower mold (20) by using a punch mounted on the upper mold (10), and sequentially manufactures laminated cores (200A) made of a predetermined number of sheets of the laminar members (200-1) by a blanking process. The apparatus comprises: a plurality of piercing punching units provided in the upper mold (10) to mold the strips (200) into the laminar members (200-1); a plurality of piercing dies provided in the lower mold (20) corresponding to the plurality of piercing punching units; a blanking punching unit (16) of the upper mold (10) provided on one side of the plurality of piercing punching units; a blanking die (24) of the lower mold (20) provided at a position corresponding to the blanking punching unit (16); and a spraying unit (30) provided on the blanking punching unit (16). The surfaces of the strips (200) are coated with a chemical reactive adhesive or a normal thermosetting adhesive. The spraying unit (30) applies an activator to the chemically reactive adhesive of the surface of the laminar members or applies a release agent to the normal thermosetting adhesive of the surface of the laminar members. Thus, the productivity of the laminated core can be improved.

Description

[0001] Apparatus for Manufacturing Adhesive Lamination Core by Spraying [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive laminated core manufacturing apparatus manufactured by laminating laminated members. More particularly, the present invention relates to a spray-type adhesive laminated core in which a strip coated with a chemically reactive adhesive is supplied, and a laminated core is manufactured by bonding a lamina member and a lamina member through application of an activator by a spraying method Manufacturing apparatus.

Generally, a laminated core is produced by laminating a plurality of lamina members obtained by stamping a strip. These laminated cores are used as stators or rotors of motors and generators, and various methods of manufacturing them are known.

As a typical method, a single lamina member obtained by successively performing piercing and blanking of a slot portion, a tooth, and the like is continuously manufactured on a strip of steel steel sheet fed to a progressive mold apparatus, There is a method of manufacturing a laminated core by laminating a laminated member sheet with a predetermined number of laminated members and bonding the laminated members together.

As disclosed in Japanese Laid-Open Patent Publication No. 2010-130824, embossing is performed on a single sheet of lamina member, and embossing and embossing are combined with each other at the time of lamination to form a so-called embossing A lamination method is typically known.

In this embossing laminated motor core, since the shape of male and female protrusions formed on the base material is fastened in a forced fit manner, the steel core acts like a speed restricting jaw installed on the road, resulting in loss of iron loss and magnetic flux density. In addition, there is a problem that the drop rate is lowered and vibration noise occurs due to the resonance phenomenon.

In order to solve this problem, a silicon steel plate core stacking apparatus for a reactor, which can bond and bond the core and the core to each other with a bonding agent, to be laminated by a desired block size, and to be separated by an automatic separation regulator as in the Japanese Patent No. 10-1164803 Is being introduced.

In the above patent, the injection of the high-strength adhesive is performed by using a constant-volume injector. The hose is inserted into the strong-bond cylinder, the input end is inserted into the lamination separator at the exit side through the quantitative ejector, The hose connected to the lamination separating jig is caused to inject a certain amount of the bond into the core punching material. However, according to this method, since the application thickness of the adhesive is not constant, the laminar member and the lamina member are adhered to each other by the adhesive, and then the predetermined number of lamina members and lamina members are different from each other in thickness, There is a problem that the arrangement of the adhesive supply hose is very difficult and the structure of the laminated core manufacturing apparatus is very complicated.

In addition, when the predetermined number of lamina members are separated, it is necessary to separate the predetermined number of lamina members stacked in the above-mentioned prior art, but the upper surface or the lower portion of the lamina member The laminated core may have a height different from that of the laminated core due to the strong adhesive. Therefore, when the laminated core is mounted on the lower surface of the lamina member, Resulting in poor assembly due to contact with parts or structures.

The object of the present invention is to provide a method of forming a laminate member sheet by piercing and blanching a strip of a punch mounted on an upper mold sequentially from a lower mold and using a strip coated with a chemically reactive adhesive, To provide a laminated core manufacturing apparatus of the spray type which can apply the activating agent to a lamina member to obtain a predetermined laminated core so that the lamina member and the lamina member can be adhered to each other.

Another object of the present invention is to provide a spray type laminated adhesive core manufacturing apparatus which can easily separate laminated core products.

It is still another object of the present invention to provide a spray type adhesive laminated core manufacturing apparatus capable of improving the quality and productivity of a product.

The above and other objects of the present invention can be easily achieved by the present invention described below.

A spray type laminated adhesive core manufacturing apparatus according to the present invention comprises:

The strip 200 which is composed of the upper mold 10 and the lower mold 20 and in which the punch mounted on the upper mold 10 is sequentially conveyed from the upper portion of the lower mold 20 is passed through a plurality of piercing processes A laminated core manufacturing apparatus (100) for sequentially forming a laminated member (200-1) and sequentially manufacturing a laminated core (200A) made up of a predetermined number of laminated members (200-1) by a blanking process :

A plurality of piercing punching portions provided on the upper mold 10 to mold the strip 200 into the lamina member 200-1;

A plurality of piercing dies provided on the lower mold (20) corresponding to the plurality of piercing punching portions;

A blanking punching portion (16) of an upper mold (10) provided at one side of the plurality of piercing punching portions;

A blanking die 24 of a lower mold 20 provided at a position corresponding to the blanking punching section 16; And

An injection unit 30 installed in the blanking punching unit 16;

Wherein a chemical reactive adhesive or a general thermosetting adhesive is coated on the surface of the strip 200 and the activating agent is applied to the chemically reactive adhesive on the surface of the lamina member And the releasing agent is applied to the general thermosetting adhesive on the surface of the lamina member.

In the present invention, the injection unit 30 includes a plurality of nozzles 31 installed in the blanking punching unit 16 and a storage tank 32 connected to the plurality of nozzles.

In the present invention, the nozzle 31 may spray the activator 40 or the release agent 40 'on the upper part of the blanked lamina member 200-1.

In the present invention, it is preferable that the number of the nozzles is two, four, or six.

In the present invention, it is preferable that the chemically reactive adhesive is an alcohol reactive adhesive, and the activating agent is alcohol.

According to the present invention, a laminate core is manufactured by laminating a lamina member and a lamina member by laminating a predetermined number of lamina members by applying an activator to a strip coated with a chemically reactive adhesive, by spraying, And productivity can be increased.

The present invention also provides a method of separating a laminated core composed of a predetermined number of laminated members and a predetermined number of laminated members so as not to apply an activating agent to the uppermost laminated member of the laminated core, So that the productivity of the laminated core can be improved.

1 is a perspective view showing a strip used in an adhesive laminated core manufacturing apparatus according to the present invention.
FIG. 2 is a perspective view showing a laminated core in which a laminar member is laminated in an apparatus for manufacturing a laminated adhesive bonded core according to the present invention.
3 is a schematic side cross-sectional view of a spray bonded laminated core manufacturing apparatus according to the present invention.
FIG. 4 is a bottom view of an upper mold of a spray bonded laminated core manufacturing apparatus according to the present invention. FIG.
FIG. 5 is a schematic view showing a process of forming a laminated core in an apparatus for manufacturing a bonded laminated core according to an embodiment of the present invention, wherein (a) shows a state in which a chemical- (B) shows a state in which a predetermined number of lamina members are adhered and laminated, and (c) shows a separated laminated core.
FIG. 6 is a schematic view showing a process of forming a laminated core in an apparatus for manufacturing a bonded laminated core according to another embodiment of the present invention, wherein (a) is a state in which a general adhesive is applied to the upper surface of the lamina member, b) shows a lamina member laminated with a predetermined number of lamina members laminated on top of one laminated core, and Fig. 3c shows a laminated laminate core separated therefrom.
7 is a schematic cross-sectional view showing a back pressure unit used in a take-out process of an apparatus for manufacturing a bonded laminated core according to the present invention.
FIG. 8 shows a process flow diagram of a spray bonded laminated core manufacturing apparatus according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a strip 200 used in an apparatus for producing a laminated adhesive layer in a spray type according to the present invention, and FIG. 2 is a cross- And is a perspective view showing the laminated core 200A.

As shown in FIGS. 1 and 2, the strip 200 used in the present invention is coated, vapor-deposited or coated with an adhesive 200B on the surface of the steel sheet 200A. In one embodiment of the present invention, adhesive 200B is a chemically reactive adhesive, and in another embodiment of the present invention adhesive 200B is a generic thermosetting adhesive.

In one embodiment of the present invention, the chemically reactive adhesive refers to causing an adhesion reaction upon contact with an activating agent. For example, in the case of an alcohol-reactive adhesive, when the alcohol-reactive adhesive is brought into contact with alcohol as an activator, the alcohol-reactive adhesive exerts the adhesive property, and the lamina member and the lamina member are laminated and adhered to each other.

In another embodiment of the present invention, lamina members coated with conventional thermosetting adhesive can not be made into one laminated core product when laminated and adhered to each other. Therefore, for example, in the case of producing a laminated core composed of ten sheets, it is necessary to prevent the tenth laminated lamina member from adhering to the lamina member thereon. Thus, by applying the release agent 40 'to the top surface of the tenth lamina member, one laminate core product is separated from the lamina member thereon without being adhered.

3 is a schematic side cross-sectional view of a spray bonded laminated core manufacturing apparatus 100 according to the present invention.

The apparatus 100 for manufacturing a laminated core according to the present invention comprises an upper mold 10 and a lower mold 20. The upper mold 10 is provided with a first piercing punching section 11, a second piercing punching section 12, a third piercing punching section 13, a fourth piercing punching section 14, The piercing punching portions 15 are sequentially installed, and then the blanking punching portion 16 is provided.

The lower mold 20 corresponding to the upper mold 10 is composed of a die plate 21, a die backing plate 22 and a die holder 23. The die plate 21 is provided with a first piercing die 211, a second piercing die 212, a third piercing die 213, and a third piercing die at positions corresponding to the first through fifth piercing punching portions of the upper die 10, A fourth piercing die 214 and a fifth piercing die 215 are installed. A blanking die 24 is installed on one side of the fifth piercing die 215. The shape of the lamina member is sequentially formed from the strip through the first to fifth piercing punching portions and the first to fifth piercing dies through five successive piercing processes.

In the specification and drawings of the present invention, the five-step piercing process is illustrated and described, but it is not necessarily limited to the five-step piercing process. That is, according to the shape of the lamina member for the laminated core to be manufactured, it is possible to apply a plurality of steps, that is, 2, 3, 4, 6, or more steps instead of five. Therefore, it should be understood that the description of the piercing process of the five steps in the specification and drawings of the present invention is merely for convenience of explanation, and the present invention encompasses all cases of performing a plurality of piercing processes.

In the present invention, a blanking die 24 is provided on the lower mold 20 corresponding to the blanking punching section 16 to perform a blanking process. Lamina members 200-1 formed from the strip 200 are sequentially stacked on the squeeze ring 27 of the laminate unit 300 by providing the laminate unit 300 below the blanking die 24, (200A). The shape of the laminated core 200A can be referred to FIG.

In FIG. 1, reference numeral 17 in the upper mold 10 denotes a punch plate to which each punch is installed, 17-1 denotes a stripper plate for catching a strip to form a required shape, 18 denotes a punch backing plate, 19 denotes a punch plate Which is a punch holder. Such a configuration is a basic configuration of the press and can be easily understood by those skilled in the art to which the present invention belongs, and a detailed description thereof will be omitted.

The blanking die 24 may be configured to include a lamination unit 300 and the lamination unit 300 may include the blanking die 24 and the rotary die 26 and the squeeze ring 27 . When a predetermined number of lamina members 200-1 to be described later are sequentially and continuously stacked on the inner circumferential surface of the squeeze ring 27, a laminated core 200 composed of a predetermined number of lamina members 200-1 is squeezed As shown in FIG. The squeeze ring 27 may be provided on the rotary die 26 so that the laminar member 200-1 to be laminated can be stacked while being rotated at a predetermined pitch.

In the present invention, the blasting punching section 16 of the upper mold 10 is provided with a jetting unit 30. The injection unit 30 serves to apply the activator or the release agent 40 'to the upper surface of the blanked lamina member.

4 is a bottom view showing an upper mold 10 of an apparatus 100 for manufacturing a bonded laminated core according to the present invention.

4, an apparatus 100 for manufacturing a bonded laminated core according to the present invention includes a nozzle unit 31 and a storage tank 32. The nozzle unit 31 is installed in the blanking punching unit 16 .

The nozzle 31 is installed on the lower side of the blanking punching portion 16 in order to apply the activator 40 or the release agent 40 'to the upper part of the blanked lamina member 200-1 in a spraying manner. The nozzle 31 is connected to the storage tank 32 by a hose or the like so that the activator 40 or the releasing agent 40 'stored in the storage tank 32 is supplied to the nozzle 31. Although the number of nozzles is six in FIG. 4, the number of nozzles is not limited to such a number, but may be two or four depending on various conditions such as the size of the lamina member.

When the blanking punching portion 16 is lowered by the operation of the upper mold 10 to blank the strip, the shape of the lamina member is formed. The activator (40) or the release agent (40 ') is applied to the upper surface of the molded lamina member. The lamina member to which the activator 40 or the release agent 40 'is applied is laminated on the inner surface of the squeeze ring 27 on the lamina member,

FIG. 5 is a schematic view showing a process of forming a laminated core 200A in an apparatus 100 for manufacturing a laminated adhesive bonded core according to an embodiment of the present invention, wherein (a) (B) shows a state in which a predetermined number of lamina members are adhered and laminated, and (c) shows a separated laminated core.

According to an embodiment of the present invention, as shown in FIG. 5A, a strip on which an adhesive 200B is applied on a top surface is punched in a blanking punching unit 16 to form a single lamina member 200-1. Respectively. The adhesive 200B applied to the upper surface of the lamina member 200-1 is a chemically reactive adhesive. The activator 40 for activating the adhesion performance of the chemically reactive adhesive is applied to the top of the adhesive 200B by a spray method through a nozzle. 5 (a) and 5 (b), the activator 40 is shown to be applied at regular intervals, but this is for the sake of convenience only, and in practice it is applied evenly and evenly.

FIG. 5 (b) shows a state in which the laminar member 200-1 is continuously laminated. Here, one laminated core is illustrated by stacking ten laminar members 200-1. Therefore, when the ten lamina members 200-1 are laminated, the activator 40 is not applied to the tenth lamina member 200-1. Thus, since the tenth laminar member and the eleventh laminar member are not attached to each other, one laminated core 200A in which ten lamina members are laminated is formed by the squeeze ring 27 as shown in FIG. 5 (c) And then discharged.

FIG. 6 is a schematic view showing a process of forming a laminated core in an apparatus for manufacturing a bonded laminated core according to another embodiment of the present invention, wherein (a) is a state in which a general adhesive is applied to the upper surface of the lamina member, b) shows a lamina member laminated with a predetermined number of lamina members laminated on top of one laminated core, and Fig. 3c shows a laminated laminate core separated therefrom.

According to another embodiment of the present invention, as shown in FIG. 6A, a strip coated with a general thermosetting adhesive 200B 'on the upper surface is punched out of the blanking punching portion 16 to form a lamina member 200-1).

FIG. 6B shows a state in which the laminar member 200-1 is continuously laminated. Here, one laminated core is illustrated by stacking ten laminar members 200-1. Since the lamina member 200-1 is coated with the general thermosetting adhesive 200B ', when the lamina member is laminated, the adhesive 200B' is activated to exert the adhesive performance. Therefore, in another embodiment of the present invention, it is preferable that the heating means 25 for heating the squeeze ring 27 on which the lamina member is laminated is provided around the squeeze ring 27. [

The release agent 40 'is applied to the upper surface of the tenth lamina member so that the adhesive 200B' does not exhibit adhesive performance. This release agent 40 'is applied to the top of the adhesive 200B' by a spray method through a nozzle.

Therefore, when ten laminar members 200-1 are laminated, the release agent 40 'is applied to the surface of the tenth laminar member 200-1. Thus, since the tenth laminar member and the eleventh laminar member are not attached to each other, one laminated core 200A in which ten lamina members are laminated is formed in the shape of a squeeze ring 27 as shown in Fig. And then discharged.

In FIG. 6 (b), the release agent 40 'is shown to be applied at regular intervals, but this is shown so as to be convenient for the sake of convenience. In practice, the release agent 40' is evenly and uniformly applied.

7 is a schematic cross-sectional view showing a back pressure unit 400 used in a process of taking out the adhesive type laminated core manufacturing apparatus 100 of the spray type according to the present invention.

7, when the laminated core stacked inside the squeeze ring 27 of the laminated unit 300 is discharged to the lower side, the laminated core is seated on the carrier 401 of the back pressure unit 400. As shown in Fig. Since the carrier 401 is connected to the elevating means 402 operating up and down, the elevating means 402 moves the carrier 401 to the upper and lower positions. The carrier 401 moves downward while the laminated core 200 'is loaded, and the laminated core 200' is discharged to the outside of the apparatus. Here, the elevating means 402 can preferably use a cylinder, a motor, or the like.

On the other hand, the laminated core 200 'is strongly pressed on the inner surface of the squeeze ring 27 and is pushed downward whenever the lamina member is stacked on the upper part. In some cases, the laminated core 200' The laminated core may not escape through the inside of the squeeze ring 27 although the laminated core should naturally exit from the squeeze ring 27. [ If such a problem occurs, the operation of the apparatus is stopped, the laminated core hooked to the squeeze ring 27 is removed, and then the apparatus is operated again.

In order to solve such a problem, an electromagnet 403 is installed inside or above the carrier 401 of the back pressure unit 400. The electromagnet 403 operates when the carrier 401 is lifted by the operation of the lifting means 402 and the stacked core 200'is placed on the carrier 401 by the attractive force of the electromagnet 403, 401), the operation of the electromagnet 403 can be stopped. The operation of the electromagnet 403 is controlled by a control unit (not shown) electrically connected to the electromagnet 403.

FIG. 8 shows a process flow diagram of a spray bonded laminated core manufacturing apparatus according to the present invention. Referring to FIG. 8, a process for manufacturing a laminated core in a spray bonded laminated core manufacturing apparatus according to the present invention will be described.

First, in a piercing process, a plurality of piercing punching portions operate on a strip 200 passing over a corresponding piercing die to shape the shape of the lamina member onto the strip 200. In the next blanking step, the strip 200 is punched to obtain one lamina member 200-1.

Immediately after the blanking process, the activator 40 or the release agent 40 'is applied to the upper surface of the lamina member 200-1 punched out in the spraying process through the nozzle 31 of the injection unit 30. [

The lamina member 200-1 is continuously laminated on the squeeze ring 27 of the laminate unit 300 in the subsequent lamination step.

The laminated core stacked at a predetermined number becomes a single product and is laid on the carrier 401 of the back pressure unit 400 in the take-out step. When the carrier 401 is moved downward, the laminated core 200 ' .

It should be noted that the above description of the present invention is merely illustrative and not for the purpose of defining the scope of the present invention in order to understand the present invention. It is intended that the scope of the invention be defined by the claims appended hereto, and that all such modifications and variations are intended to be included within the scope of the present invention.

10: upper mold 20: lower mold
11 to 15: First to fifth piercing punching parts 16: Blanking punching parts
17: Punching plate 17-1: Stripper plate
18: Punching backing plate 19: Punch holder
21: die plate 22: die backing plate
23: Die holder 24: Blanking die
26: Rotating die 27: Squeezing ring
30: injection unit 31: nozzle
32: Storage tank 40: Activator
40 ': Mold release agent 100: Laminated core manufacturing apparatus
200: Strip 200A: Steel plate
200B: Chemical reactive adhesive 200B ': Thermosetting adhesive
200-1: lamina member 200 ': laminated core
211 to 215: First to fifth piercing dies 300: Lamination unit
400: Back Pressure Unit

Claims (4)

The strip 200 which is composed of the upper mold 10 and the lower mold 20 and in which the punch mounted on the upper mold 10 is sequentially conveyed from the upper portion of the lower mold 20 is passed through a plurality of piercing processes A laminated core manufacturing apparatus (100) for sequentially forming a laminated member (200-1) and sequentially manufacturing a laminated core (200A) made up of a predetermined number of laminated members (200-1) by a blanking process :
A plurality of piercing punching portions provided on the upper mold 10 to mold the strip 200 into the lamina member 200-1;
A plurality of piercing dies provided on the lower mold (20) corresponding to the plurality of piercing punching portions;
A blanking punching portion (16) of an upper mold (10) provided at one side of the plurality of piercing punching portions;
A blanking die 24 of a lower mold 20 provided at a position corresponding to the blanking punching section 16; And
An injection unit 30 installed in the blanking punching unit 16;
Wherein a chemical reactive adhesive or a general thermosetting adhesive is coated on the surface of the strip 200 and the activating agent is applied to the chemically reactive adhesive on the surface of the lamina member Wherein the releasing agent is applied to the general thermosetting adhesive on the surface of the lamina member. The apparatus according to claim 1, wherein the injection unit (30) comprises a plurality of nozzles (31) installed in the blanking punching unit (16) and a storage tank (32) connected to the plurality of nozzles,
Wherein the nozzle (31) injects the activator (40) or the releasing agent (40 ') onto an upper part of a blanked lamina member (200-1). 3. The apparatus of claim 2, wherein the number of the nozzles is two, four, or six. The apparatus of claim 1, wherein the chemically reactive adhesive is an alcohol reactive adhesive, and the activator is an alcohol.

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