KR20170112662A - Apparatus And Method for Manufacturing Adhesive Type Laminate Core - Google Patents

Abstract

SUMMARY OF THE INVENTION A laminated core laminate comprising laminated cores sequentially formed by passing a strip-shaped material coated with an adhesive layer on a surface thereof and sequentially forming laminated cores including laminar members integrally formed by a predetermined number of layers by interlayer adhesion, A core manufacturing apparatus and a manufacturing method are disclosed.
To this end, an adhesive laminated core manufacturing apparatus according to an aspect of the present invention includes: a blanking unit for blanking the material to sequentially form the lamina members; Wherein the blanking unit is provided on the upstream side of the blanking unit with respect to the material movement direction, and the blanking is periodically performed every predetermined number of times for blanking for separating the laminated cores formed by interlaminar adhesion of the lamina members A release paper feeding unit for feeding the release paper to the surface of the material; And a laminate unit for sequentially manufacturing the laminated cores by integrating the lamina members. According to the present invention, a laminated core in which laminar members are integrated in a predetermined number of layers in an interlaminar bonding manner can be successively manufactured using a strip-shaped material having an adhesive layer coated on its surface in advance.

Description

[0001] Apparatus and Method for Manufacturing Adhesive Type Laminated Core [

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a core manufacturing apparatus for manufacturing an iron core or core such as a motor or a generator, and more particularly, to a production apparatus and a manufacturing method for a laminated adhesive laminate core in which laminar members .

Generally, a laminate core is used as a rotor or a stator of a generator or a motor, and a laminate member such as a metal laminate is stacked in layers and integrated with each other .

As a method of manufacturing the laminate core, that is, a laminated core manufacturing method of laminating and integrally fixing the lamina member, a tap fixing method using an interlock tap and a welding fixing method using welding, for example, , A riveting method, and the like are known. The laminated core comprises all or part of the core for the rotor or stator.

The tap-fixing method is disclosed in Korean Patent Laid-Open Nos. 10-2008-0067426 and 10-2008-0067428 as a technique for producing a laminated core. In particular, in the tap-fixing method, embossing is difficult due to the thinning of the material, that is, the steel sheet, which shows the limitation as a manufacturing technique of a laminated core. The above-mentioned patent publications and the following patent documents disclose laminated cores of various kinds and shapes.

In recent years, there has been proposed a bonding fixation method in which a unit thin plate of the laminated core, that is, laminar members constituting a sheet, is bonded and integrated with an adhesive, which is disclosed in Korean Patent Publication No. 10-1996-003021 and Japanese Laid- 5-304037 discloses the adhesive fixing method.

In the above-mentioned patent documents, Japanese Patent Laid-Open Publication No. 5-304037 discloses that a steel sheet as a material for manufacturing a motor core is fed by a conveying roller to a first press molding machine and a second press molding machine, An adhesive is applied to the steel sheet by a coating roller and a nozzle before doing so.

The core material or lamina member sequentially stacked in the inner spaces of the first press molding machine and the second press molding machine by the blanking of the material is integrated by the adhesive to thereby produce the adhesive laminated core. According to the conventional adhesive fixing method, that is, the adhesive laminated core manufacturing method, the cost can be reduced as compared with laser welding, and the steel sheet can cope with thinning.

Korean Patent Laid-Open Publication No. 10-2006-0044726, split core motor stator and assembling method thereof Korean Patent Laid-Open Publication No. 10-2008-0067426, core body, core wing, and prefabricated laminated core Korean Patent Laid-Open Publication No. 10-2005-0015175, a laminated core manufacturing apparatus Japanese Unexamined Patent Application Publication No. 5-304037, a method for producing a laminated core Japanese Unexamined Patent Application Publication No. 2009-297758, a device for manufacturing a laminated iron core

The present invention provides an adhesive laminated core manufacturing apparatus and a manufacturing method which can supply a strip-shaped material having an adhesive layer on its surface to continuously produce a laminated body for a core such as a motor and a generator, that is, a laminated core The purpose is to do.

One aspect of the present invention is a method for producing A laminated core laminate comprising laminated cores sequentially formed by passing a strip-shaped material coated with an adhesive layer on a surface thereof and sequentially forming laminated cores including laminar members integrally formed by a predetermined number of layers by interlayer adhesion, A core manufacturing apparatus is provided.

An adhesive laminated core manufacturing apparatus according to one aspect of the present invention includes: a blanking unit for blanking the material to sequentially form the lamina members; Wherein the blanking unit is provided on the upstream side of the blanking unit with respect to the material movement direction, and the blanking is periodically performed every predetermined number of times for blanking for separating the laminated cores formed by interlaminar adhesion of the lamina members A release paper feeding unit for feeding the release paper to the surface of the material; And a laminate unit for sequentially manufacturing the laminated cores by integrating the lamina members.

In one aspect of the present invention, the blanking unit comprises: a blanking punch provided on a vertically movable upper mold for pressurization and blanking of the workpiece; And a blanking die supported by a lower mold provided below the upper mold and having a blanking hole facing the blanking punch and stacked on the upper side of the laminate unit.

In one aspect of the present invention, the release paper feeding unit is configured to be selectively able to synchronize with the blanking unit so that the release paper is periodically attached to the surface of the blank each time the blanking for the blank progresses a predetermined number of times .

According to an embodiment of the present invention, the release paper is provided on a release film including a base layer and a cover layer adhered on the base layer, and is provided between the base layer and the cover layer, And is provided every pitch.

On the other hand, in one form of the present invention, the release paper feeding unit includes: a feeding roller for feeding the release film to a blanking position; A base winding roller for winding back the base layer of the release film fed from the feeding roller; And a cover winding roller for winding up and removing the cover layer from the release film; And a release paper pressing tool for periodically pressing the release paper provided on the release film to the material surface so as to attach the release paper to the material side when the blanking is performed a predetermined number of times with the cover layer removed from the release film do.

According to an embodiment of the present invention, the release paper pressing tool includes: a release paper pushing block provided to press the release paper to the material side; And a lifter for moving the releasing paper pushing block in the work direction.

The release film is configured to be transported in a direction orthogonal to the material S transport direction.

In addition, the release paper feeding unit can prevent the release film from being folded or folded by using the servo motor and the torque motor so that the release film between the feed roller and the base retracting roller maintains a constant tension.

The laminate unit may be rotatably provided on the lower mold, for example, in units of a predetermined angle.

According to one aspect of the present invention, the release paper pressing tool constituting the release paper feeding unit and the blanking punch constituting the blanking unit may be provided together on the upper mold.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, which comprises sequentially forming lamina members having a predetermined shape while passing a strip-shaped material having an adhesive layer coated on its surface, The method comprising: blanking the material so as to sequentially form and laminate the lamina members; and stacking the lamina cores on the laminate core. Wherein the blanking is performed at a position prior to blanking the blank with reference to the blank movement direction for separating laminated cores formed by interlaminar bonding of the lamina members, A release paper supplying step of supplying a release paper to a surface of the material; And laminating the laminar members to complete the laminated core. The present invention also provides a method of manufacturing a laminated adhesive core.

In the above-described method, the release paper is provided from a release film fed and fed in a direction orthogonal to the material S transport direction.

In the above-described method, the movement of the release film is stopped until blanking is performed after the supply of the release sheet to the surface of the workpiece and subsequent to the subsequent cycle of supplying the release paper.

In the above-described method, the release paper is selectively synchronized to the blanking so that the release paper is periodically attached to the surface of the blank each time the blanking advances a predetermined number of times.

The adhesive laminated core manufacturing apparatus and the manufacturing method according to an embodiment of the present invention have the following effects.

First, according to one aspect of the present invention, a laminated core in which laminar members are integrated in a predetermined number of layers in an interlaminar bond manner can be continuously manufactured by using a strip-shaped material having an adhesive layer coated on its surface.

According to one embodiment of the present invention, release paper for mutual separation between laminated cores is attached to the surface of a workpiece in advance in advance of blanking in synchronism with the blanking process of the strip-like blank material, And it is easy to manufacture the laminated core and to separate the cores from each other.

Thirdly, according to one aspect of the present invention, since the release paper supply unit is controlled such that the blank is fed at intervals of one pitch along the longitudinal direction while the blank is fed by one pitch, and the release paper is supplied at intervals of a plurality of pitches, And the boundaries between the stacked cores can be accurately set.

Fourth, according to one aspect of the present invention, when the release paper feeding unit is separated from the blanking unit, maintenance of the release paper feeding unit is easy.

Fifthly, according to an embodiment of the present invention, since the region where the laminar member is aligned / laminated with the lamina member and the region where the lamina member is integrated with the region where the laminated core is discharged are accurately interlocked and integrally rotated in the laminate unit, The thickness deviation of the core can be minimized and a core with high precision can be manufactured.

BRIEF DESCRIPTION OF THE DRAWINGS The features and advantages of the present invention will become better understood with reference to the following description taken in conjunction with the following detailed description of embodiments of the invention,
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view schematically showing a structure of an adhesive laminated core manufacturing apparatus according to an embodiment of the present invention, with reference to a conveyance direction of a work. FIG.
Fig. 2 is a view showing a state in which a material is supplied to the adhesive laminated core production apparatus of the present invention shown in Fig. 1, wherein the release film is not shown.
FIG. 3 is a plan view schematically showing the adhesive laminated core manufacturing apparatus of FIG. 2 according to the present invention as viewed from above; FIG.
4 (a) and 4 (b) are longitudinal sectional views along the line I-I and II-II in Fig. 3,
4 (a) is a longitudinal sectional view schematically showing the configuration of a release paper feed unit for feeding a release paper to the bottom surface of the blank,
4 (b) is a longitudinal sectional view schematically showing the configuration of a release paper feed unit for feeding release paper to the upper surface of the workpiece;
5 and 6 are diagrams illustrating a series of operations for supplying a release sheet in a release-sheet supply unit according to the present invention,
5 (a) and 5 (b) are longitudinal sectional views showing the operation of the release paper pressing tool in a state in which the upper support is not lowered,
5 (a) is a state before operation of the release paper pressing tool,
FIG. 5 (b) is a state view after the release pressurizing tool has been operated; FIG.
6 (a) to 6 (c) show the descending and rising of the upper support and the movement of the material in the post-operation state of the release paper pressing tool,
6 (a) is a vertical sectional view showing a time point at which the release paper on the release film contacts the both side surfaces of the material as the upper support is lowered,
6 (b) is a longitudinal sectional view showing the state after the release paper is attached to both side surfaces of the material as the upper support is lifted,
6 (c) is a longitudinal sectional view showing a state after the release paper attached to both side surfaces of the material has moved to the downstream side according to the movement of the material;
7 is a side view of a bonded laminated core manufacturing apparatus according to an embodiment of the present invention. In Fig. 7, the release papers attached to both surfaces of the material are positioned below the punch for blanking according to the movement of the material. Fig.
FIG. 8 is a view showing a laminated state of lamina members formed by the adhesive laminated core manufacturing apparatus shown in FIGS. 1 to 3; FIG.
FIG. 9 is a perspective view showing an example of a laminated adhesive layer C and a laminated member L which can be manufactured by an embodiment of the present invention; FIG.
10 is a process flow diagram showing the process of forming the lamina member L shown in FIG. 9 and the process of manufacturing the laminated core (C);
11 is a longitudinal sectional view showing a blanking unit and a laminate unit of the adhesive laminated core production apparatus shown in Figs. 1 to 3; Fig.
12 is a cross-sectional view schematically showing the laminate unit shown in Fig. 11;
13 is a cross-sectional view showing the process of integrating lamina members in the interior (laminate hole) of the laminate unit shown in Fig. 12;
FIG. 14 is a view showing the squeeze member and the rotation housing shown in FIG. 11; FIG.
FIG. 15 is a plan view schematically showing one embodiment of a pinch applicable to the laminate unit shown in FIG. 11; FIG.
16 schematically shows a rotation mechanism of the laminate unit shown in Fig. 12; Fig. And
17 is a longitudinal sectional view schematically showing a structure of an adhesive laminated core manufacturing apparatus according to another embodiment of the present invention, with reference to a conveying direction of a work.

Best Mode for Carrying Out the Invention Hereinafter, preferred embodiments of the present invention in which the object of the present invention can be specifically realized will be described with reference to the accompanying drawings. In describing the present embodiment, the same names and the same symbols are used for the same configurations, and additional description thereof will be omitted in the following.

The embodiment of the present invention is characterized by blanking a continuous strip-shaped material to be fed at a predetermined pitch, for example, to form lamina members of a predetermined shape, The present invention relates to an apparatus and a method for manufacturing a bonded laminated core for manufacturing a core such as a motor or a generator by integrating the laminated core.

Specifically, one embodiment of the present invention relates to a method of manufacturing a core-forming material (a core-forming steel sheet having an adhesive layer coated thereon, for example, a self-bonding steel sheet having a semi-hardened adhesive layer formed at a temperature below a predetermined temperature, The present invention relates to an adhesive laminated core manufacturing apparatus capable of producing the aforementioned core, that is, a laminated core. The laminated core forms at least a part of the stator or the iron core for the rotor.

First, an embodiment of an adhesive laminated core manufacturing apparatus according to the present invention will be described with reference to Figs. 1 to 4. Fig.

1 is a longitudinal sectional view schematically showing a structure of an adhesive laminated core manufacturing apparatus according to an embodiment of the present invention, with reference to a conveyance direction of a workpiece, and Fig. 2 is a longitudinal cross- Fig. 3 is a plan view of the adhesive laminated core manufacturing apparatus of Fig. 2 according to the present invention. Fig. 3 is a plan view of the adhesive laminated core manufacturing apparatus of Fig. 4 (a) and 4 (b) are longitudinal sectional views along the line I-I and II-II in Fig. 3, and Fig. 4 (a) FIG. 4B is a longitudinal sectional view schematically showing the configuration of a release paper feed unit for feeding release paper to the upper surface of the work. FIG. 4B is a longitudinal sectional view schematically showing the configuration of the release paper feed unit.

1 to 4, an apparatus for manufacturing a laminated adhesive core according to the present invention (hereafter referred to as a "core manufacturing apparatus") is a device for manufacturing a laminated core having a strip-shaped material S coated with an adhesive layer 1 Based on a press system in which laminar members (L) of a predetermined shape are sequentially formed and laminated cores (C) including laminar members (L) integrally formed by a predetermined number of sheets are integrated by interlayer adhesion do.

The adhesive laminated core manufacturing apparatus according to the present invention is an apparatus for producing the above-described laminated core (C) using a strip-like material (S) having an adhesive layer (1) coated on its surface, A release paper feed unit (100) for separating the laminated cores (C), and a laminar member (L) are integrally formed by a predetermined number of sheets, And a laminate unit (300) for forming a core (C).

The release paper feed unit 100 is provided on the upstream side of the blanking unit 200 with respect to the moving direction of the material S coated with the adhesive layer 1 on the surface thereof, The release paper 131 is supplied to the surface of the work S periodically every time the blanking for the work S is performed a predetermined number of times so as to separate the laminated cores C formed by the interlayer adhesion of the work S So that it can be attached.

That is, the release paper feeding unit 100 periodically separates the release paper 131 from the blanking unit 200 on the surface of the blank S at a position upstream from the blanking unit 200, whenever the blanking of the blank S progresses a predetermined number of times. To the blanking unit 200 so as to be attached thereto.

More specifically, the release paper feed unit 100 according to the present embodiment includes a feed roller 110 for feeding a release film 130 wound in a roll form to a blanking position, Up rollers 111b for rewinding the base layer 133 of the release film 130 supplied from the release film 130 in the form of a roll; The release layer 131 provided on the release film 130 is periodically formed every predetermined number of times when the blanking is performed a predetermined number of times with the roller 111a and the cover layer 132 removed from the release film 130, And releasing paper pressing tools 150a and 150b for transferring the paper to the surface of the paper S (S).

The release paper pressing tools 150a and 150b include release paper pushing blocks 151a and 151b provided to press the release paper 131 toward the material S side and release paper pushing blocks 151a and 151b, And lifters 152a and 152b for moving them in the direction of the arrow.

The release paper pressing tools 150a and 150b according to the present embodiment are apparatuses that take a cam-type operating structure. The lifters 152a and 152b have a sloping surface and a tooth shape And lifting / lowering of the releasing paper pushing blocks 151a and 151b located on the upper / lower side of the material is realized by sliding the lifters 152a and 152b in the left and right directions. That is, the releasing paper pushing blocks 151a and 151b move up and down, and the releasing paper pushing blocks 151a and 151b move up and down by moving the lifters 152a and 152b in the left and right directions.

That is, as the lifter slides in the horizontal direction so that the lifters 152a and 152b are out of engagement with each other, the releasing paper pushing blocks 151a and 151b are moved up and down in place. Of course, the lifting and lowering structure of the release paper pressing tools 150a and 150b and the operation method thereof are not limited to the above-described examples. For example, a lifting structure using a hydraulic / pneumatic cylinder is also possible.

The release paper pressing tools 150a and 150b are provided on the upper and lower supports 140 and 141 so as to be spaced one pitch along the moving direction of the material S and the upper supports 140 Elastic members 153a and 153b (for example, compression coil springs) having a restoring force at the time of compression are provided between the releasing paper pushing blocks 151a and 151b and the lifters 152a and 152b provided on the upper and lower supports 141 and 141b.

More specifically, among the release paper pressing tools 150a and 150b, the release paper pressing tool 150b provided on the lower support table 141 is pressed against the release paper pressing tool 150a provided on the upper support table 140 with respect to the moving direction of the material S, Is arranged on the upstream side by one pitch.

The releasing paper pushing blocks 151a and 151b and the elastic members 153a and 153b are installed on the upper and lower supports 140 and 141 while preventing the releasing paper pushing blocks 151a and 151b from being separated from each other. While the release paper pushing blocks 151a and 151b are lifted by the cam action of the lifters 152a and 152b together with the release paper pushing blocks 151a and 151b, 154a, and 154b, respectively.

That is, the entrance edge of the outcases 154a and 154b prevents the release of the release paper pushing blocks 151a and 151b as the edge of the release paper pushing blocks 151a and 151b extends over the step of the release paper pushing blocks 151a and 151b, The elastic members 153a and 153b provided in the inner case 154b press the release button pushing blocks 151a and 151b toward the entrance of the outer case 154a and 154b.

3 and 4, the release paper 131 is a kind of adhesive applied on a paper or film surface by a sticky material, and is present on the release film 130, and is used as a series of operations in the release paper supply unit 100 Is separated from the base layer 133 constituting the release film 130 and attached to the surface of the work S.

The releasing paper 131 supplied to the material S and adhered to the upper surface and the lower surface of the material S includes a base layer 133 constituting a base material, And a cover layer 132 adhered on the release layer 133. The release layer 131 is formed on the release layer 130 between the base layer 133 and the cover layer 132, Are periodically arranged at regular intervals along the longitudinal direction.

That is, the release papers 131 are repeatedly provided at predetermined pitches along the longitudinal direction of the release film 130 so as to be synchronized with pitch intervals along the moving direction of the work S.

The release film 130 is configured to be supplied in a direction orthogonal to the feeding direction of the material S so as to prevent interference with the material S and to improve space efficiency, A cover winding part for winding the cover of the release film 130 separately from the base winding roller 111b for winding the base layer 133 of the release film 130, A roller 111a may be provided.

The release film 130 is made of a material such as PE (polyethylene), PET (polyethylene terephthalate), PI (polyimide) or the like which is interposed between the laminated cores C to be manufactured, It is a thin film.

The release paper supplying unit 100 is configured to cause the release film 130 between the supply roller 110 and the base paper take-up roller 111b to maintain a constant tension by using a servo motor and a torque motor, 130 can be prevented from being folded or folded.

The blanking unit 200 sequentially forms the lamina members L by blanking the material S and sequentially laminates the lamina members L in the laminate unit 300 Are sequentially supplied and laminated. The laminate unit 300 sequentially stacks the laminar members L stacked in the up and down direction by the blanking by integrating the laminates in a predetermined unit.

In this embodiment, the blanking unit 200 includes a blanking punch 210 provided in the upper die 10 and a blanking die 220 provided in the lower die 20.

More specifically, the upper die 10 is provided so as to be able to move up and down on the lower die 20 for pressing and blanking the work S. The blanking punch 210 is mounted on the upper die 10.

In this embodiment, the release film 130 is fed at a position upstream of the position of the upper mold 10 with respect to the conveying direction of the material S, and the release paper 131 is attached to the surface of the material S Is disposed so as to be positioned between the release paper pressing tools (150a, 150b) and the work (S).

The blanking punch 210 thus moves up and down together with the upper mold 10 to blank the workpiece S so that the blanking unit 200 can be selectively synchronized at the upstream position of the blanking unit 200, The release film 130 is attached to the surface of the work S and the movement of the release film 130 is stopped while the work S is blanked a predetermined number of times after the release film is attached, The blanking punch 210 is lifted up and positioned at the top dead center and the release paper 131 on the release film 130 is positioned at the release paper attachment position so that the releasing paper pushing blocks 150a and 150b constituting the release paper pressing tools 150a and 150b 151a and 151b advance toward the material S by the cam action of the lifters 152a and 152b and when the upper support table 140 descends in synchronism with the blanking action in the blanking unit 200 in this state, (150a, 150b) is attached to the material (S) to the surface pushes the release paper 131.

The releasing paper pressing tools 150a and 150b are located on the upper side and the lower side of the material S so that the releasing paper 131 is pressed against the releasing paper pressing tool 150 in accordance with the lowering of the upper supporting table 140, 150a and 150b on the upper surface of the work S and the lower surface of the work S separated by one pitch therefrom.

That is, in the present embodiment, the elements such as the release roller 110 and the base winding roller 111b for transferring the release paper pressing tools 150a, 150b and the release film 130 constituting the release paper feed unit 100 And selectively synchronizing the blanking unit 200 to supply the release paper 131 for separation between the laminated cores C to the surface of the blank S each time the blanking advances a predetermined number of times. It is a possible configuration.

In other words, the blanking punch 210 moves up and down by the upper die 10 once every time the work S moves by a predetermined pitch. In other words, the material S passes one step between the upper die 10 and the lower die 20 at every stroke of the press, that is, one stroke of the blanking punch 210, Release paper is supplied by the release paper feed unit 100 on the upstream side of the blanking unit 200 at every predetermined timing.

For example, in the case where the laminated core (C) is a laminate of ten layers, that is, ten layers, the release paper 131 is a releasable paper supplying unit (100) provided on the upstream side of the blanking unit when punching and laminating the tenth lamina member (S) on the opposite sides of the work (S).

The blanking die 220 has a blanking hole 221 facing the blanking punch 210 and is mounted by the lower die 20 and supported by the lower die 20, 300).

In this embodiment, the blanking die 220 is formed by punching only the material S along the direction of conveyance of the material S, or punching the material S together with the release paper 131 attached to the surface of the material S And is provided in the lower die 20 so as to face the blanking punch 210 to be disposed.

In the present embodiment, the upper die 10 is provided with a pusher 12, that is, a pressing member, for pressing the work S toward the lower die 20. Therefore, when the upper die 10 descends, the upper surface of the work S is pushed downward by the pusher 12, so that the work S is pressed toward the lower die 20.

The upper die 10 includes an upper frame 11 provided to be able to move up and down on the lower die 20 and the pusher 12 provided below the upper frame 11. In the present embodiment, the blanking punch 210 is provided on the upper frame 11 more specifically than the upper mold 10 together with the pusher 12.

In this embodiment, the pusher 12 functions as a stripper in the blanking process, and at the same time, performs a blanking process for the portion where the release material is not attached to the material S, A pushing plate having a flat lower surface as a compression plate or a pressure plate for pressing the work S toward the lower mold 20 for a blanking process for the blanking process.

In the lamination structure of the lamina members L shown in Fig. 2, the dotted line is the portion where the laminar members L are adhered, the solid line is the portion where the laminated cores C are separated, 131 are attached, lamina members L are laminated thereon.

An elastic member (for example, a coil spring) 12a for elastically pressing the pusher 12 is provided between the pusher 12 and the upper frame 11, A guide 12b is provided.

The lower mold 20 includes a base frame 21 constituting the base of the lower mold 20 and lower dies 22 and 23 provided on the upper side of the base frame 21.

The lower dies 22 and 23 are divided into a die frame 22 forming the upper side of the lower die 20 and a die holder 23 provided below the die frame 22 .

The die holder 23 supports the die frame 22 and is stacked on the base frame to be supported by the base frame, but the structure of the lower die 20 is not limited thereto. The blanking die 220 and the laminate unit 300 may be installed on the lower dies 22 and 23.

Hereinafter, with reference mainly to Figs. 5 (a) and 5 (b), 6 (a) to 6 (c), and 7, The operation process of the release paper feed unit 100 according to the example will be described in more detail.

The material S for manufacturing a laminated core moves between the pusher 12 and the die frame 22 by a predetermined distance (one pitch) for each cycle of the upper die 10, that is, one stroke of the press, As shown in FIGS. 3, 4A and 4B and FIG. 5A, a predetermined portion of the workpiece S is moved to the upper mold 10, And reaches the release paper attaching position provided on the upstream side of the upper die 10.

5 (b), when the lifters 152a and 152b constituting the release paper pressing tools 150a and 150b horizontally move, the release paper The pushing blocks 151a and 151b rise or fall as indicated by arrows to reach a position closer to the surface of the work S.

The distal end surfaces of the releasing paper pushing blocks 151a and 151b disposed on the upper and lower sides of the surface of the material S protrude from the upper surface of the upper supporter 140 and the upper surface of the lower supporter 141, .

More specifically, when the release paper pressing tool 150b disposed below the material S is used as a reference, the movement of the lifter 152b along the horizontal direction causes the upper and lower sides of the release paper pushing block 151b The position is adjusted. 5 (b), when the releasing paper pushing block 151b presses the releasing paper 131 toward the material S, the lifter 152b is moved in the direction indicated by the arrow The releasing paper pushing block 151b rises due to the cam action of the lifter 152b as it horizontally moves to the left side and moves up above the upper surface of the lower support table 141. [

On the other hand, the releasing paper pushing block 151a on the upper side of the material S is also moved up and down by the movement along the horizontal direction of the lifter 152a, The position is adjusted. 5 (b), when the releasing paper pushing block 151a presses the releasing paper 131 toward the material S, the lifter 152a is moved in the direction indicated by the arrows The releasing paper pushing block 151a descends by the cam action of the lifter 152a and advances downward to a position lower than the lower surface of the upper support table 140 as the paper moves horizontally to the upper right side.

6A, when the release pressurizing tools 150a and 150b are stopped, the upper support 140 staying at the top dead center is lowered by a predetermined distance d At this time, it is preferable to descend in synchronism with the lowering of the blanking punch 210.

The upper side releasing paper pushing block 151a provided on the upper supporter 140 according to the lowering of the upper supporter 140 presses the releasing paper 131 on the upper side of the material S and the material S downward together At this time, since the lower support 141 and the lower releasing paper pushing block 151b are provided on the lower side of the material S at the position separated by one pitch, the material S can not descend further by these supports.

The releasing paper pushing blocks 151a and 151b are provided with elastic members 153a and 153b for imparting elastic restoring force to the releasing paper pushing blocks 151a and 151b. the release paper 131 disposed on each of the release films 130 arranged at a pitch of 1 along the direction of movement of the workpiece S on the upper side and the lower side with respect to the surface of the work S, S) surface.

6 (b), the upper support 140 rises again to return to the top dead center position, whereby the release paper pushing blocks 151a and 151b are separated from the surface of the material S And the base layer 133 of the release film 130 is also separated from the surface of the work S. At this time, the release papers 131 disposed on the release film 130 are attached to the surface of the material S, that is, the upper surface and the lower surface of the material S, respectively.

The release paper pushing blocks 151a and 151b of the release paper pressing tools 150a and 150b then return to their original positions and the material moves along the moving direction. In FIG. 6C, The releasing paper pushing blocks 151a and 151b of the pressing tools 150a and 150b return to their original positions and the material is shifted by two pitches.

6 (c), the lifters 152a and 152b constituting the release paper pressing tools 150a and 150b are moved to their original positions along the horizontal direction, whereby the release paper pushing blocks 151a and 151b And moves to a position further away from the surface of the material (S).

On the other hand, in the case of the upper side release paper pressing tool 150a, since the release paper pushing block 151a may not rise due to its own weight when the lifter 152a moves to the original position along the horizontal direction, A separate device or an elastic member (not shown) for pushing up the release paper pushing block 151a and the outer case 154a to return to the original position when the cam action is released after moving to the original position along the horizontal direction, May be further provided.

7, the process of attaching the release papers 131 to the surface of the work S is performed in the same manner as in the first embodiment, It is preferable that the step is performed in synchronism with the ejection of the attached releasing paper 131, but the present invention is not limited thereto.

In the blanking process in which only the blank S is exposed without feeding the releasing paper 131, the blanking punch 210 is moved by one stroke as the blank S is conveyed by one pitch, which is a predetermined number of times.

5 (a) to 6 (c) are periodically repeated, the supply of the releasing paper 131 is selectively performed by supplying the releasing paper 131, The separation between the cores C is effectively performed, thereby enabling the continuous production of the adhesive laminated core.

8 is a view showing a laminated state of laminar members L formed by an adhesive laminated core manufacturing apparatus according to an embodiment of the present invention. Can be achieved.

In this embodiment, the division between the laminated cores C is performed by using the release paper 131 attached to the lamina member L constituting the top layer of the laminated core C and the top of the laminated core C newly stacked thereon The releasing paper 131 is attached only to the lamina member L constituting the uppermost layer of the laminated core C or the releasing paper 131 is attached to the upper part of the lamina member L, It goes without saying that even if the release paper 131 is attached only to the bottom layer of the laminated core (C) to be newly stacked, it is possible to divide the laminated core (C) into layers.

9 is a perspective view showing an example of a laminated adhesive core layer C that can be manufactured according to an embodiment of the present invention and a lamina member L. Fig. 10 is a sectional view of the lamina member L shown in Fig. And a process of manufacturing the laminated core (C). 9, the workpiece S is sequentially passed through the release paper attaching steps S1a and S1b, the piercing steps S2 and S3, and the blanking step S4, The release paper attaching process S1a and S1b is performed periodically every time the material S is conveyed at predetermined pitches so that the release paper 131 is attached to the lower surface and the upper surface of the material S, do. Of the circles indicated by the solid lines in FIG. 10, circles indicated in the blanking step S4 indicate holes formed in the material S, and it goes without saying that the order of forming the lamina members L is not limited to the above- .

11 to 15, the laminate unit 300 integrates the lamina members L sequentially formed by blanking of the material S, more specifically, the laminate unit L, The laminar members L are integrated into a single lump.

More specifically, the laminate unit 300 includes an adhesive curing unit 310 for curing an interlayer adhesive of a laminate member (L) continuously passing through a laminate hole (laminate hole) 300a, And a pincher for holding the pinch mechanism 320, that is, the laminated core member C, provided below the hardener 310. The laminate holes 300a are formed in the laminate unit 300 in the vertical direction so that the laminate members L are stacked in the vertical direction and are integrated while moving continuously.

The adhesive hardener 310 is an apparatus for melting and curing an adhesive present between layers of the lamina members L. In this embodiment, the adhesive is cured by high frequency induction heating so that the adhesive curing speed is increased, And a high-frequency induction heater for integrating the laminated lamina members L into one. Since the high-frequency induction heating itself is a well-known one, a further description thereof will be omitted. The present invention is a method for efficiently curing an adhesive existing between layers of lamina members and minimizing thermal influence on peripheral products, And starts heating.

A lamination guide 330 for guiding the movement of the lamina members L to the hardening holes is formed in the adhesive hardener 310 through a hardening hole passing through the lamina members and forming a hardening space of the adhesive, And the laminating guide 330 is preferably made of engineering ceramics more specifically than a nonconductive material so as not to be influenced by high frequency induction heating.

The lamination guide 330 may have a hollow block structure such as a ring type or a barrel type, or a split type structure in which the adhesive layer is disposed inside the adhesive curing device. A gap may be formed between the inner circumferential surface of the curing hole and the lamination guide 330 in consideration of the thermal expansion of the material to be heated (laminated members) and the lamination guide 330.

The pinch mechanism 320 prevents a sudden drop of the product discharged downward from the adhesive hardener 310, that is, the laminated core C formed by the unification of the lamina members L. To this end, the pinch mechanism 320 is provided below the adhesive hardener 310 and applies a lateral pressure to the laminated core C to prevent the laminated core C from falling down.

The laminate unit 300 applies pressure (side pressure) to the side surfaces of the lamina members L moving downward from the upper side of the adhesive curler 310 toward the adhesive curler 310, And a squeeze member 340 for tightening the lugs L, that is, a squeezer for alignment.

The squeeze member 340 is formed by laminating the laminate members L sequentially formed by blanking of the workpiece S in the state of being aligned at the entrance portion of the laminate hole 300a, The laminar members L sequentially enter the inside of the squeeze member 340 and are pressed against the squeeze member 340 in order to apply a side pressure to the laminar members L. [

The laminar members L are aligned by the squeeze member 340 so that the laminar members L are aligned by the squeeze member 340. In this embodiment, And enters the high-frequency induction heater, that is, the adhesive curing apparatus 310 via the squeeze member 340. The high- The squeeze member 340 may be made of a special steel mold such as SKD-11.

The squeeze member 340 is stacked on the lower side of the blanking die 220 so as to be coaxial with the blanking die 220. 13, the outer diameter of the lamina member L is expressed to be smaller than that of the blanking die 220, but the size of the laminate member L is substantially the same as the size of the release paper 131, The blanking die 220 is formed with a lamina member having the same shape and size as that of the blanking hole 220, The laminar members L pass through the laminate holes 300a from the upper side to the lower side while the edges are in close contact with the inner circumferential surface of the laminate hole 300a.

The squeeze member 340 supports a side surface (e.g., a rim) of the lamina members L for sequential lamination of the lamina members and prevents lamination misalignment of the lamina members L A squeeze ring having the same shape as the inner hole or blanking hole of the blanking die 220 may be used.

For example, when the laminated core (C) shown in FIG. 9 is manufactured, the squeeze member 340 may be formed into a cylindrical shape penetrating in the vertical direction, but is not limited thereto.

As described above, the blanking unit 200 blankets the workpiece S, and the laminate unit 300 is an apparatus for integrating the lamina members L that are sequentially manufactured by blanking, 220 are coaxially disposed on the lower side of the lamination member 200, that is, the lamination holes 300a, which are integrated with each other while passing the lamination members L sequentially stacked by the blanking unit 200.

Meanwhile, the pinch mechanism 320 assists the alignment of the product C moving downward in the adhesive hardener 310 by applying a side pressure to the product passing through the inside thereof, and prevents the product, that is, the rapid fall of the laminated core (C) do.

The pinch mechanism 320 includes a pinch block 321 and an elastic member for elastically supporting the pinch block 321, that is, a pinch spring 322. The pinch block 321 includes a pinch- Thereby preventing the laminated core (C) from dropping rapidly to the bottom of the laminate hole (300a) after passing through the adhesive hardener (310).

15, a plurality of pinch blocks 321 are spaced apart from each other along the periphery of the laminated core C in the laminate holes 300a (see FIG. 12) A plurality of holes 300a are provided in units of a predetermined angle. The pinch mechanism 320 may be a moving type or a stationary type that is fixed in place, but is preferably of the moving type in consideration of thermal expansion. In FIG. 15, when the pinch spring 322 is omitted and the pinch block 321 is fixed in place so as not to move, it is an example of a fixed type pinch.

The pinch block 321 is spaced apart from a plurality of positions along the periphery of the laminated core C and elastically supported by the pinch spring 122 or elastic member so that the laminated core C is elastically Side pressure can be applied.

The blank die 220, the squeeze member 340, the guide 330 and the pinch mechanism 320 are vertically disposed on the lower die 10 to form the laminate holes 300a, (Laminated core) C, which is discharged through a process of stacking and curing, is provided at the bottom of the stack 300a.

When the take-out receiver 500 reaches the bottom of the laminated hole (stacked barrel), a take-out cylinder (not shown) is attached to the laminated core (C) C) to the take-out passage to help take out the product.

On the other hand, the take-out receiver 500 is configured to be capable of being raised and lowered, rotated (that is, rotatable) at the elevation position, and configured to be capable of arbitrarily adjusting the rotation period and the rotation angle. This is because when the thickness of the material itself is varied due to a manufacturing error in manufacturing the material S, the laminated core C is stacked in the same direction on the laminate hole 300a, The accumulation of the thickness deviation due to the unidirectional lamination of the workpiece S is eliminated by rotating the blanked laminar member L or the laminated core C at predetermined angles at predetermined intervals So that the thickness of the laminated core (C) can be uniformly produced without deviation along the circumferential direction.

13, a gap is formed between the laminated cores C, but the laminated cores C are stacked in a tangent state, and the laminated holes 300a are successively passed one pitch (equal to the thickness of one lamina member) And descends in a state of being seated on the take-out receiver 500.

In the laminate unit 300, a high temperature is generated by the adhesive curing machine 310, and the lower die 20, the blanking die 220, and the squeeze member 340 are heated by the high temperature generated by the adhesive curing machine 310, May be thermally expanded. As a result, the shape and size of the lamina members L may be varied, and lamination failure of the lamina members L may occur.

In this embodiment, a cooling system for the laminate unit 300 is applied.

12 to 14, a cooling groove 341 is formed on the outer peripheral surface of the squeeze member 340. The cooling fluid flows along the cooling groove 341 to prevent the squeeze member 340 from overheating.

The cooling groove 341 is formed in a spiral shape on the outer circumferential surface of the squeeze member 340 and the upper and lower outer peripheral surfaces of the squeeze member 340 are formed at the upper and lower ends of the cooling groove 341 An annular upper groove 342 and a lower groove 343 which are connected to each other and form a closed loop are formed. It is to be understood that the cooling fluid may be air, but is not limited thereto.

The laminate unit 300 is rotatably provided in the lower mold 20 for uniformizing the thickness of the laminated core. The laminate unit 300 reduces the thickness variation of each of the laminated cores C and improves the squareness and the flatness while rotating the laminate unit 300 by a predetermined angle unit, for example, every predetermined timing.

The squeeze member 340 is fixed to the inside of the rotation housing 350 and is rotatably supported by the upper fixing block 600 fixed to the lower mold 20. [ The upper fixing block 600 is fixedly installed in the lower mold 20 and the rotation housing 350 is rotatably installed in the upper fixing block 600.

The squeeze member 340 rotates together with the rotation housing 350 and upper bearings 601 and 602 are provided inside the upper fixing block 600 to rotatably support the rotation housing 350 .

The upper fixing block 600 in this embodiment is a structure in which a plurality of bodies are laminated / assembled, but the present invention is not limited thereto. An upper flange 351 protruding outward from the rotation housing 350 is formed at an upper end of the rotation housing 350 and a lower flange 351 is formed at a lower end of the rotation housing 350. [ Is protruded to the inside of the rotation housing (350).

More specifically, the upper flange 351 is in surface contact with the bottom surface of the blanking die 220, and the lower end of the rotation housing 350 surrounds the lower end of the squeeze member 340. The squeeze member 340 is press-fitted into the rotation housing 350 and fixed.

The upper fixing block 600 includes an upper support 610 for rotatably supporting the upper half of the rotation housing 350 and a lower support 620 for rotatably supporting the lower half of the rotation housing 350. [ And an intermediate support body 630 provided between the upper support body 610 and the lower support body 620 to support the load of the upper support body 610.

In the present embodiment, the upper fixing block 600 is provided in the die holder, and the first upper bearing 601 is disposed between the inner surface of the upper support 610 and the upper outer surface of the rotation housing 350 And a second upper bearing 601 is also provided between the inner surface of the lower support 620 and the lower outer surface of the rotation housing 350.

The gap between the upper flange 351 and the upper support 610 is sealed to prevent the cooling fluid (air in this embodiment) of the squeeze member 340 from leaking.

The upper fixing block 600 is preferably provided with a cooling passage 600a. In this embodiment, the cooling passage 600a is formed in the lower support 620, and may be a water-cooled type in which the upper fixing block 600 is cooled by circulation of water, or a water-cooled type in which oil or air A cooling fluid may be used, and a cooling path may be applied to the upper support 610 and the intermediate support 630.

The upper fixing block 600 is provided with an air supply portion 640 for supplying cooling air to the cooling groove 341 of the squeeze member and an air supply portion 640 for supplying cooling air from the cooling groove 341 of the squeeze member An air discharge unit 650 is provided.

The air supply unit 640 is provided in the lower support 620 and introduces air into the lower end of the cooling groove 341 formed on the outer peripheral surface of the squeeze member 340. The air discharge unit 650 is provided in the upper support 610 to realize the exhaust in the cooling groove 341 of the squeeze member 340.

More specifically, the cooling air supplied to the lower groove 343 of the squeeze member 340 flows through the cooling groove 341 and flows into the upper groove 342 of the squeeze member, Thereby forming heat exchange with the squeeze member 340.

An air introduction groove 352 forming a closed loop is formed along the periphery of the rotation housing 350 on the lower outer circumferential surface of the rotation housing 350. An air supply hole 353 penetrating the rotation housing 350 is formed in the air introduction groove 352 so that air is introduced into the rotation housing 350. The air supply hole 353 communicates with the lower end of the cooling groove 341, more specifically, with the lower groove 343.

An air discharge groove 354 forming a closed loop is formed along the periphery of the rotation housing 350 on the outer peripheral surface of the rotation housing 350 such as the outer peripheral surface of the upper flange 351, An air discharge hole 355 penetrating the rotation housing 350 is formed in the groove 354. The air discharge hole 355 communicates with the upper end of the cooling groove 341, more specifically, with the upper groove 342.

According to the present embodiment, the inner opening of the air supply hole 353 is connected to an arbitrary position of the lower groove 343 formed in the squeeze member, and the inner opening of the air discharge hole 355 is connected to the squeeze member May be connected to any position of the formed upper groove 342.

In this embodiment, the air introduction groove 352 is formed horizontally at the same height as the lower groove 343, the air discharge groove 354 is formed horizontally at the same height as the upper groove 342, The air supply hole 353 and the air discharge hole 355 horizontally penetrate the rotation housing 350.

Since the annular air introducing groove 352 and the air discharging groove 354 forming the closed loop are formed on the lower outer circumferential surface and the upper outer circumferential surface of the rotation housing 350 as described above, The air supply portion 640 and the air discharge portion 650 can be always connected to the air introduction groove 352 and the air discharge groove 354 so that introduction and discharge of air can be performed stably.

An air supply hole for guiding air from the air supply part 640 to the air introduction groove 352 is formed in the lower support body 620 and the air discharge groove 354 An exhaust hole for exhausting air to the outside is formed.

The cooling air is heat-exchanged with the blanking die 220 when the cooling air is discharged to the outside through the air discharge hole 355 from the upper outer circumferential surface of the squeeze member 340, 355 may be covered on the bottom surface of the blanking die 220. That is, the cooling air is discharged and the heat exchanging is performed by contacting the blanking die 220.

The upper fixing block 600 is provided with an oil supply portion 660 for introducing oil for lubrication and / or cooling of the upper bearings 601 and 602 into the upper bearings 601 and 602, The upper bearing 601 and the upper bearing 602 for rotatably supporting the rotation housing 350 are prevented from being damaged and the upper bearings 601 and 602 And may further perform the cooling function of the upper fixture block 600. [0052] As shown in FIG.

The pinch mechanism 360 is provided in a rotatable pinch housing 360 and rotates together with the pinch housing 360. The pinch housing 360 is rotatably supported by a lower fixed block 700). The lower fixing block 700 is fixedly installed in the lower mold 20 and the pinch housing 360 is rotatably installed in the lower fixing block 700.

In order to rotate the pinch housing 360, a lower bearing 701 for rotatably supporting the pinch housing 360 is provided on the inner side of the lower fixing block 700. The lower fixing block 700 in this embodiment is an integral body having an inner annular shape and a circumferential wall having an 'a' cross section, but the present invention is not limited thereto.

The lower fixing block 700 is provided with oil systems 710 and 720 for supplying (710) / discharging (720) lubrication and / or cooling oil to the lower bearing 701 of the lower fixing block do. The oil systems 710 and 720 of the lower fixture block 700 may also perform the cooling function of the lower fixture block 700. Of course, the lower fixing block 700 may be provided with a water-cooling or air-cooling type cooling system.

An intermediate fixing block 800 for receiving the adhesive hardener 310 is provided between the upper fixing block 600 and the lower fixing block 700. The intermediate fixing block 800 is also provided with cooling passages 800a .

In the present embodiment, the cooling passage 800a of the intermediate fixing block can be a water-cooled type in which the upper fixing block 600 is cooled by circulation of water, or another cooling fluid such as oil or air can be used . The intermediate fixing block 800 is provided with the stacking guide 330 so as to be rotatable about the rotation housing 350 and the pinch housing 360 to rotate the rotation housing 350 and the pinch housing 360. [ (360).

The lower end of the rotation housing 330 can contact the upper end of the lamination guide 330 and the pinch housing 360 can contact the lower end of the lamination guide 330. The lamination guide 330 is driven by the rotation housing 350 and / or the pinch housing 360 to rotate at the same speed.

Meanwhile, the rotation housing 350 and the pinch housing 360 simultaneously rotate at the same angle. In this embodiment, the rotation housing 350 and the pinch housing 360 are respectively provided with pulleys.

16, when the pulley 356 of the rotation housing 350 is referred to as an upper pulley and the pulley 361 of the pinch housing 360 is referred to as a lower pulley, The rotation housing 361 has the same outer diameter so that the rotation housing 350 and the pinch housing 360 rotate at the same angular velocity and are connected to one drive pulley 910 by belts 911 and 912, respectively.

The drive pulley 910 is rotated by a motor M and the motor M and the drive pulley 910 are connected by a belt-pulley power transmission mechanism by a drive belt 913. However, It is of course not limited thereto.

As described above, in the core manufacturing apparatus according to the present invention, laminated members (S) are sequentially formed by blanking a strip-like material (S) coated with an adhesive on its surface, and the release film The laminated core can be manufactured by dissolving the adhesive layer 1 present between the layers of laminated laminated members which are laminated in layers and melting the laminate by heating and curing at a high temperature.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. .

For example, in the above-described embodiment, the release paper feed unit 100 for feeding the release paper 131 to the material S and the blank S for performing the blanking on the material S in constructing the adhesive laminated core manufacturing apparatus of the present invention The releasing paper pressing tools 150a and 150b and the blanking unit 200 constituting the releasing paper supplying unit 100 are separated from the upper mold 10 as shown in FIG. An integrated structure may be formed. In addition, unlike in the above-described embodiment, the lifting stroke of the releasing paper pushing blocks 151a and 151b by the lifters 152a and 152b is adjusted to be longer, instead of taking down the structure of the upper support 140, The release paper 131 may be attached to the work in synchronization with the unit.

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

C: laminated core L: lamina member
S: Material 1: Adhesive layer
10: Upper mold 20: Lower mold
100: release paper feed unit 110: feed roller
111a: cover winding roller 111b: base winding roller
130: release film 131: release paper
132: cover layer 133: base layer
140: upper support 141: lower support
150a, 150b: pressing tool 151a, 151b: releasing paper pushing block
152a, 152b: Lifters 153a, 153b:
154a, 154b: out case 200: blanking unit
210: blanking punch 211: blanking hole
220: Blanking die 300: Laminate unit
310: adhesive hardener 320: pinch mechanism
330: Lamination guide 340: Squeeze member
350: Rotation housing 360: Pinch housing
500: take-out support 600: upper fixing block
700: lower fixing block 800: intermediate fixing block

Claims (12)

A laminated core laminate comprising laminated cores sequentially formed by passing a strip-shaped material coated with an adhesive layer on a surface thereof and sequentially forming laminated cores including laminar members integrally formed by a predetermined number of layers by interlayer adhesion, A core manufacturing apparatus comprising:
A blanking unit for sequentially forming the lamina members by blanking the material;
Wherein the blanking unit is provided on the upstream side of the blanking unit with respect to the material movement direction, and the blanking is periodically performed every predetermined number of times for blanking for separating the laminated cores formed by interlaminar adhesion of the lamina members A release paper feeding unit for feeding the release paper to the surface of the material; And
And a laminate unit for sequentially manufacturing the laminated cores by integrating the lamina members. The method according to claim 1,
Wherein the blanking unit comprises:
A blanking punch provided on a vertically movable upper mold for pressurization and blanking of the workpiece; And
And a blanking die supported by a lower mold provided below the upper mold and having a blanking hole facing the blanking punch and stacked on the upper side of the laminate unit. Core manufacturing apparatus. The method according to claim 1,
Wherein the release paper feeding unit comprises:
Wherein the blanking unit is configured to be selectively able to synchronize with the blanking unit so that the release paper is periodically attached to the surface of the blank each time the blanking of the blank progresses a predetermined number of times. The method of claim 3,
Wherein the release paper comprises:
A base layer,
And a cover layer adhered on the base layer,
Wherein the adhesive layer is provided between the base layer and the cover layer at predetermined pitches along the longitudinal direction of the release film. 5. The method of claim 4,
Wherein the release paper feeding unit comprises:
A feed roller for feeding the release film to the blanking position;
A base winding roller for winding back the base layer of the release film fed from the feeding roller; And
A cover winding roller for removing the cover layer from the release film,
Further comprising a release paper pressing tool for pressing the release paper to the material side so that the release paper provided on the release paper is transferred to the material surface periodically every time the blanking is performed a predetermined number of times with the cover layer removed from the release film Wherein the laminated core is a laminated core. 6. The method of claim 5,
Wherein the release paper pressing tool comprises:
A release paper pushing block provided to press the release paper to the material side,
And a lifter for moving the releasing paper pushing block in the work direction. The method according to claim 4 or 5,
Wherein the release film is configured to be transported in a direction orthogonal to the material transport direction. 6. The method of claim 5,
On the upper figure,
Wherein the release paper pressing tool constituting the release paper feeding unit and the blanking punch constituting the blanking unit are provided together. The method according to claim 1,
Wherein the laminate unit is rotatably provided on the lower die. A laminated core laminate comprising laminated cores sequentially formed by passing a strip-shaped material coated with an adhesive layer on a surface thereof and sequentially forming laminated cores including laminar members integrally formed by a predetermined number of layers by interlayer adhesion, As a core manufacturing method,
Forming and laminating the lamina members sequentially by blanking the material;
Wherein the blanking is performed at a position prior to blanking the blank with reference to the blank movement direction for separating laminated cores formed by interlaminar bonding of the lamina members, Supplying the release paper to the surface of the material; And
And laminating the laminar members to complete the laminated core. ≪ RTI ID = 0.0 > 21. < / RTI > 11. The method of claim 10,
Wherein the release paper is provided from a release film fed and fed in a direction perpendicular to the material conveyance direction. The method according to claim 10 or 11,
After the release paper is fed to the surface of the material,
Characterized in that the movement of the release film is stopped until blanking for subsequent release of the release paper is made.

Images