KR101742635B1 - Adhesive Type Laminate Core Manufacturing Apparatus - 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 is disclosed. An adhesive laminated core manufacturing apparatus according to one aspect of the present invention is characterized in that: the adhesive layer is partially removed for partitioning between the laminated cores, and an adhesive agent for exposing the surface of the workpiece at predetermined positions along the longitudinal direction of the workpiece Removal unit; A blanking unit for sequentially forming the lamina members by blanking 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 layer-by-layer manner by the number of layers can be continuously manufactured by using a strip-shaped material having an adhesive layer coated on its surface in advance.

Description

[0001] The present invention relates to an adhesive laminate core manufacturing apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention 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 an adhesive laminated core manufacturing apparatus for producing laminated cores by interlaminarly bonding lamina members (thin plates).

Generally, a laminate core (laminate core) manufactured by laminating a lamina member, for example, a plurality of metal thin plates and integrating them together, is used as a rotor or a stator of a generator or a motor As a method of manufacturing the laminated core, that is, a laminated core manufacturing method of laminating and integrally fixing the laminated member, a tap fixing method using an interlock tap, a welding fixing method using laser welding, a riveting method 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 Application Laid-Open No. 5-304037 discloses that a material for manufacturing a motor core, that is, a steel sheet is supplied to a first press molding machine and a second press molding machine by a conveying roller, passes through the first 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

An object of the present invention is to provide an adhesive laminated core manufacturing apparatus capable of continuously producing laminated bodies for cores such as motors and generators, that is, laminated cores, by supplying a strip-shaped material having an adhesive layer on its surface.

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 is characterized in that: the adhesive layer is partially removed for partitioning between the laminated cores, and an adhesive agent for exposing the surface of the workpiece at predetermined positions along the longitudinal direction of the workpiece Removal unit; A blanking unit for sequentially forming the lamina members by blanking 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 in a vertically movable upper mold for pressurization and blanking of the workpiece, the blanking punch being disposed downstream of the adhesive removal unit with respect to a conveyance direction of the workpiece; And a blanking die supported by a lower mold provided below the upper mold and having a blanking hole facing the punch and stacked on the upper side of the laminate unit, The blanking unit can be selectively synchronized to partially remove the adhesive layer from the surface to form a surface exposed portion on the blank each time the blanking advances a predetermined number of times.

The adhesive removing unit comprising: A scraper provided upstream of the blanking unit for scratching the adhesive layer and a scraper for supporting the scraper and capable of being raised and lowered on at least one of the upper and lower molds for selective contact between the scraper and the workpiece And a base body. The base body may include a rotation driver for rotating the scraper.

The scraper includes: A rotating body connected to the rotating actuator and rotatable by the rotating actuator, and at least one blade provided in the rotating body. And the blade comprises: And is elastically provided on the rotating body.

The rotating body includes: A blade supporter having a blade receiving groove in which the blade can be lifted and lowered and rotated by the rotation driver, and an elastic body provided in the blade receiving groove to elastically support the blade.

The adhesive removing unit may be provided on the upper or lower mold so as to be movable up and down. The adhesive removing unit may be provided to be vertically movable in the accommodating portions formed in the upper and lower molds so as to be shifted from each other at a predetermined interval along the conveying direction of the material; The upper receiving portion may be formed on the downstream side of the receiving portion of the lower die with respect to the conveying direction of the material.

The upper die may be divided into a plurality of bodies along the conveying direction of the work, or may form one integral body. The lower mold may be divided into a plurality of bodies along the conveying direction of the work, or may form one integral body.

Wherein the blanking punch ascends and descends once by the upper figure every time the material moves by a predetermined pitch; The adhesive removal unit may be selectively synchronized to the blanking unit to form surface exposed portions at a plurality of pitch intervals along the length of the blank. The blanking die may be provided on the lower mold with a distance of N pitch (N is a natural number of 1 or more) in the adhesive removing unit along the conveying direction of the blank.

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

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

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

According to an embodiment of the present invention, since the adhesive layer coated on the surface of the workpiece is selectively removed in synchronism with the blanking process of the strip-shaped workpiece, the lamina members can be easily divided every predetermined number, Manufacturing and delimiting is easy.

Thirdly, according to one aspect of the present invention, since the adhesive removing unit is driven such that the blank is blanked at one pitch intervals along the length direction while the blank is being fed by one pitch, and the adhesive layer is removed at intervals of a plurality of pitches, And the boundaries between the stacked cores can be accurately set.

Fourthly, according to one aspect of the present invention, since the adhesive removing unit can be elastically brought into close contact with the surface of the material, particularly the adhesive layer, damage of the material by the adhesive removing unit can be prevented, have.

Fifth, according to an embodiment of the present invention, since the adhesive layer coated on the surface of the work can be removed in a predetermined pattern at predetermined intervals, it is possible to efficiently remove the adhesive according to the shape of the lamina member.

Sixth, according to one aspect of the present invention, since the region where the lamina 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 closely 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 where a material is supplied to the adhesive laminated core manufacturing apparatus shown in FIG. 1; FIG.
3 is a view showing an adhesive removing unit of the adhesive laminated core manufacturing apparatus shown in FIG. 1;
4 is a plan view of an embodiment of a scraper applicable to the adhesive removal unit shown in Fig. 3; Fig.
5 is a view showing a process of partially removing an adhesive layer on a work surface by the adhesive removing unit shown in FIG. 3;
Fig. 6 is a view showing a state in which the adhesive removing unit shown in Fig. 3 is retracted; Fig.
FIG. 7 is a perspective view showing an example of a laminated adhesive core that can be manufactured by the present invention and a lamina member therefor; FIG.
FIG. 8 is a view showing a process sequence for manufacturing an example of the laminated core shown in FIG. 7; FIG.
9 is a longitudinal sectional view showing a blanking unit and a laminate unit of the adhesive laminated core production apparatus shown in Fig. 1; Fig.
FIG. 10 is a cross-sectional view schematically showing the laminate unit shown in FIG. 9;
11 is a cross-sectional view showing the process of integrating lamina members in the interior (laminate hole) of the laminate unit shown in FIG. 10;
FIG. 12 is a view showing the squeeze member and the rotation housing shown in FIG. 9;
FIG. 13 is a plan view schematically showing one embodiment of a pinch applicable to the laminate unit shown in FIG. 9; FIG. And
14 is a view schematically showing the rotation mechanism of the laminate unit shown in Fig.

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 designations and the same reference numerals are used for the same components, and additional description thereof will be omitted in the following.

In an embodiment of the present invention, a continuous strip-shaped material is fed by a distance of a predetermined pitch, for example, by blanking to form lamina members of a predetermined shape, And a core such as a motor or a generator by integrally assembling the laminated core by a bonding method.

Specifically, one embodiment of the present invention relates to a method of manufacturing a bonded laminated core (hereinafter, referred to as " laminated core ") capable of producing a core, that is, a laminated core, by supplying a strip- ≪ / RTI > The laminated core forms at least a part of the stator or the iron core for the rotor.

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

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 conveying direction of a work, and FIG. 2 is a cross- FIG. 3 is a view showing an adhesive removing unit of the adhesive laminated core manufacturing apparatus shown in FIG. 1, and FIG. 4 is a sectional view of the adhesive removing unit shown in FIG. 3 Fig. 6 is a plan view showing an embodiment of a scraper applicable to the adhesive removing unit shown in Fig.

1 to 4, an apparatus for manufacturing a bonded laminated core according to an embodiment of the present invention (hereinafter referred to as a "core manufacturing apparatus") comprises a strip-shaped material S (L) are sequentially formed while passing through a laminated core (C), and a laminated core (C) including laminar members integrally formed by a predetermined number of layers by interlayer adhesion is sequentially manufactured .

The adhesive laminated core manufacturing apparatus according to one embodiment of the present invention comprises an adhesive removing unit 100 for splitting between the laminated cores C and a blanking unit 100 for sequentially forming the laminated members L through blanking, And a laminate unit (300) for forming the laminated core (C) by integrating the laminar members (L) a predetermined number of times.

The adhesive removing unit 100 is configured such that when the above-described laminated core C is manufactured by using a strip-like material S having an adhesive layer 1 coated on its surface, The adhesive layer 1 is partially removed to expose the surface of the workpiece S at predetermined positions along the longitudinal direction of the workpiece S. [

The blanking unit 200 sequentially blanking the blank to form the lamina members L and sequentially supplying the lamina members L to the inside of the laminate unit 300 . 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 mold 10 and disposed downstream of the adhesive removing unit 100 with reference to the conveying direction of the work S. Therefore, the blanking punch 210 moves up and down together with the upper die 10 to blank 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, As shown in Fig.

In this embodiment, the adhesive removing unit 100 partially removes the adhesive layer 1 from the surface of the blank S every time the blanking is performed a predetermined number of times, (Not shown), so that the blanking unit 200 can be selectively synchronized.

For example, the blanking punch 210 is moved up and down by the upper die 10 once each time the workpiece S moves by a predetermined pitch. In other words, the material S passes by one pitch between the upper mold 10 and the lower mold 20 every stroke of the press, that is, one stroke of the blanking punch 210, and before the blanking process An adhesive removing step is performed at every predetermined timing.

The adhesive removing unit 100 may be configured to selectively apply synchronizing to the blanking unit 200 so as to form a surface exposed portion 1a in the workpiece S at a plurality of pitch intervals along the longitudinal direction of the work S. [ can do. When the laminated core (C) is a laminate of 10 layers, that is, 10 layers, the surface exposed portion 1a is formed on the surface of the work (S) at 10 pitch intervals along the longitudinal direction And are formed in the same pattern.

The blanking die 220 may be positioned at a distance of N pitch (N is a natural number equal to or greater than 1) in the adhesive removing unit 100 along the feeding direction of the material S, Respectively.

The adhesive removing unit 100 may be provided on the upper mold 10 and / or the lower mold 20 to be movable up and down. For example, when the adhesive layer (1) is formed only on the upper surface of the work (S), the adhesive removing unit (100) is provided on the upper die (10). In the opposite case, the adhesive removing unit 100 is provided in the lower die 20.

When the adhesive layer 1 is coated on both side surfaces (upper side and lower side) of the workpiece S, at least one of the upper mold 10 and the lower mold 20 is provided with the adhesive removing unit 100 . In this embodiment, a structure in which the above-described adhesive removing unit 100 is installed in the upper die 10 and the lower die 20 is described so that the division between the laminated cores C can be performed more smoothly.

However, when the adhesive layer 1 is coated on both sides (upper side and lower side) of the work S, the adhesive removing unit 100 is provided only on one side of the upper die 10 and the lower die 20 The interlayer division of the laminated cores C can be made. When the surface exposed portion 1a described above is formed periodically at predetermined pitches along the longitudinal direction of the workpiece only at one side of the upper and lower sides of the workpiece S, As shown in Fig.

The adhesive removing unit 100 includes the receiving portions 10a formed in the upper die 10 and the lower die 20 so as to be shifted from each other with a predetermined interval along the feeding direction of the work S, And 20a, respectively. In other words, the upper housing portion 10a and the lower housing portion 20a are formed at mutually offset positions.

More specifically, the upper receiving portion 10a is formed downstream of the receiving portion 20a of the lower die, more specifically, one pitch downstream, with reference to the conveying direction of the material S.

The upper die 10 may be divided into a plurality of bodies 10b and 10c along the conveying direction of the work S or may form one integral body. The lower mold 20 may be divided into a plurality of bodies 20b and 20c along the conveying direction of the work S or may form one integral body. The core manufacturing apparatus shown in Fig. 2 is a structure including an integral type upper mold and an integral lower mold.

In the present embodiment, the upper die 10 is provided with a pusher or 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.

The pusher 12 functions as a stripper in a blanking process or a piercing process and at the same time compresses the material S toward the lower die 20 for an adhesive removing process and a blanking process, And a pushing plate having a flat bottom surface as a pressure plate.

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

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

The present embodiment includes an adhesive removing unit 100 installed on the lower die 22, 23. The lower dies 22 and 23 are divided into a die frame 22 constituting the upper side of the lower mold 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. However, the structure of the die 20 is not limited thereto, and the die holder 23 ) Can be divided into a plurality. The lower die 22 and the lower die 23 are provided with the blanking die 220 and the lower removal unit 100B.

2 to 4, the adhesive removing unit 100 includes a scraper 110 and a base body 120 coupled to the scraper 110.

The scraper 110 is provided upstream of the blanking unit 200 so as to scratch the adhesive layer 1. The base body 120 supports the scraper 110 and supports at least one of the upper mold 10 and the lower mold 20 for selective contact between the scraper 110 and the work S, Respectively. Therefore, the scraper 110 can be moved up and down by the base body 120.

The base body 120 can be lifted and lowered in the accommodating portion 10a of the upper mold and the accommodating portion 20a of the lower mold in the present embodiment and the scraper 110 described above is mounted on the base body 120 .

An adhesive removing unit 100A installed in the upper mold 10 and an adhesive removing unit 100B installed in the lower mold 20 are disposed in opposite directions Respectively. That is, in the upper side removal unit 100A, the scraper 110 is installed downwardly of the base body 120 and the scraper 110 is installed upward on the base body 120 in the lower side removal unit 100B do.

In this embodiment, the scraper 110 scratters the adhesive layer 1 by rotation. For this purpose, the base body 120 includes a rotary actuator 121 for rotating the scraper 110 And more specifically includes a servo motor (Servo Motor). Of course, the scraper 110 may partially remove the adhesive layer 1 by scraping the adhesive layer 1 in the longitudinal direction or the width direction of the material S at a predetermined position of the material S.

The scraper 110 may include a rotating body 111 connected to the rotating actuator 121 and at least one blade 112 provided in the rotating body 111. In this embodiment, the rotating body 111 rotates about an axis perpendicular to the pusher 12, and the blade 112 protrudes upward from the upper surface of the rotating body 111 toward the pusher 12, do.

The rotating body 111 is rotatable by the rotation driver 121 and the blade 112 is resiliently provided in the rotating body 111. For example, the blade 112 is elastically supported by the rotating body 111 so that the rotating body 111 is elastically movable up and down.

In the present embodiment, the rotating body 111 includes a blade supporter 111a for receiving the blade 112 and an elastic body 111b for elastically supporting the blade 112. [ Examples of the elastic body 111b include a leaf spring and a coil spring.

A blade receiving groove is formed in the blade supporter 111a, and the blade 112 is elastically lifted and lowered in the blade receiving groove. The elastic body 111b is provided in the blade receiving groove to elastically support the blade 112.

In the present embodiment, a plurality of blades 112 are provided on the rotating body 111 and are elastically protruded from the surface of the rotating body 111. The rotating body 111 is protected by a cover cap 130 covering the edge of the rotating body 111 and the cover cap 130 prevents the scraper or the rotating body 111 from being separated.

The cover cap 130 of the upper removal unit 100A is mounted on a scraping hole of the pusher 12 and the scraper 110 of the upper removal unit 100A is installed Passes through the scraping hole of the pusher (12) and comes into contact with the upper adhesive layer of the work (S). The cover cap 130 of the lower removal unit 100B is mounted on the die frame 22 to cover the edge of the scraper 110. [

The blade supporter 111a is rotated by the rotation driver 121 and the structure of the present embodiment is such that the axis of the blade supporter 111a is directly connected to the axis of the rotation driver 121, 121 and the blade supporter 111a is not limited thereto.

4 shows a structure in which the blade 112 is arranged to form a donut-shaped surface exposed portion 1a on the surface of the workpiece S, But may be variously modified.

Meanwhile, the base body 120 is raised and lowered by an elevator such as an elevator 400, for example, a cam mechanism or a hydraulic / pneumatic cylinder, thereby adjusting the vertical position of the scraper 110.

In other words, when the elevator 400 moves (advances) the base body 120 toward the workpiece S every predetermined period, when the upper die 10 descends, The scraper 110 may be closely attached to the base 1. In the present embodiment, the elevator 400 is provided in the accommodating portion 10a of the upper mold and the accommodating portion 20a of the lower mold, respectively, and is coupled to the base body 120.

The base body 120 of the upper removal unit 100A is lowered to the bottom dead center at predetermined intervals by the elevator 400 and the base body 120 of the lower removal unit 100B is lowered to the lower portion at every predetermined period by the elevator 400, To a top dead center at predetermined intervals. After the removal of the adhesive layer (removal of a predetermined local area), the base body 120 is retracted by the elevator 400 and the adhesive layer 1 and the scraper 110 Contact is prevented.

More specifically, in the case where the laminated core (C) has a 10-layer structure composed of 10 lamina members, the adhesive removing process is performed once every 10 pitches of the material (S) An interlayer division between the laminated cores C can be realized.

To this end, the elevator 400 moves up and down the base body 210 (the base body of the upper removal unit is lowered and the base body of the lower removal unit is raised) once every 10 pitches of the workpiece S . In the lamination structure of the lamina members shown in Fig. 2, the dotted line is the part where the interlaminar bond is made, the solid line is the part where the interlayer division is made, and the lamina members are laminated with the adhesive removed in the solid line part.

3, the elevator 400 supports the adhesive removing unit 100, particularly the base body 120, and is provided with the upper receiving portion 10a and the lower receiving portion 20a And a lifter 420 for moving the lifting body 410 upward and downward.

In the present embodiment, the lifting body 410 is fixed to the adhesive removing unit 100, in particular, the base body 120, and moves integrally with the base body 120. The lifting rod 430 is coupled to the lifting body 410 through the lifter 420 in a vertical direction.

The elevator 400 according to the present embodiment has a cam structure, and the elevation / descent of the lifting body 410 is realized by sliding the lifter 420 horizontally. In other words, the lifting body 410 and the lifting rod 430 are lifted in place, and the lifting body 410 is vertically moved by the lifter 420 moving leftward and rightward. Of course, the structure and operation of the elevator are not limited to the above-described examples.

Hereinafter, the operation of the adhesive removal unit 200 according to the present embodiment will be described in more detail with reference to FIGS. 5 and 6. FIG.

The material S moves by a predetermined distance (one pitch) every one cycle of the upper die 10, that is, a stroke of one press, passes between the pusher 12 and the die frame 22, when the predetermined portion of the material S reaches the adhesive removing position, the upper removal unit 100A is lowered by the elevator 400 at the same time or immediately before or after the predetermined portion of the material S reaches the adhesive removal position, The removal unit 100B is lifted by the elevator 400. Fig.

5 (b), when the upper die 20 is lowered, the upper surface of the work S is pushed by the pusher 12 so that the lower adhesive layer of the work S contacts the lower The scraper 110 of the removal unit, in particular, the blade 112, and the upper adhesive layer of the material is in close contact with the blade 112 of the upper removal unit 100A.

When the scraper 110 is rotated by the rotary actuator 121 while the upper side removal unit 100A and the lower side removal unit 100B are in close contact with the upper and lower sides of the workpiece, A surface exposed portion 1a is formed at an interval of one pitch on the upper and lower sides of the work S. Of course, the blanking process proceeds in the blanking unit 200 at the same time as the adhesive removing process.

5C shows a state in which the upper die 10 is lifted after the surface exposed portion 1a is formed on the upper and lower side surfaces of the workpiece S, At the same time, the upper removal unit 100A may be raised and the lower removal unit 100B may be lowered.

6A, the upper removal unit 100A rises and the lower removal unit 100B is lowered so that the adhesive removal unit 100 and the material do not contact each other even if the upper mold 10 is lowered And the adhesive removal process does not proceed for a predetermined number of cycles as shown in FIG. 6 (b).

FIG. 7 is a perspective view showing an example of a laminated adhesive layer and a lamina member that can be manufactured by an embodiment of the present invention, and FIG. 8 is an example of a process flowchart showing a process of forming a lamina member in FIG. 7, the workpiece S is transferred while sequentially passing through an adhesive removing step S1, a piercing step S2, S3 and a blanking step S4, The removal process is selectively performed for every predetermined pitch.

9 to 13, the laminate unit 300 integrates the lamina members L sequentially formed by blanking 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. 11, the outer diameter of the lamina member L is expressed to be smaller than that of the blanking die 220. However, it is obvious in the technical field that the sizes of the lamina members L are substantially the same, The laminate member L is formed such that the laminate hole 300a is in contact with the inner circumferential surface of the laminate hole 300a while the laminate member L is in contact with the inner circumferential surface of the laminate hole 300a, To the lower side.

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, in the case of manufacturing the laminated core shown in FIG. 7, the squeeze member 340 may be formed in a cylindrical shape passing through in the vertical direction, but is not limited thereto.

As described above, the blanking unit 200 is for blanking a blank, and the laminate unit 300 is an apparatus for integrating the lamina members L, which are sequentially manufactured by blanking, And a lamination hole, that is, the laminate hole 300a described above, is integrally formed on the lower side through the laminar members L which are 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).

13, a plurality of the pinch blocks 321 are spaced apart from each other along the circumference of the laminated core C in the laminate holes 300a, A plurality of units are installed 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. 13, 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.

11, a gap is formed between the laminated cores C, but the laminated cores C are laminated in a tangent state, and the laminate 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.

10 to 12, a cooling groove 341 is formed on the outer circumferential 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.

Referring to FIG. 14, 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.

Although not shown, the adhesive laminated core manufacturing apparatus may be provided with a foreign matter removing unit for removing foreign substances generated in the adhesive removing process such as adhesive residue. For example, a foreign matter removing unit such as a surface brush or an air blower for brushing the surface of the workpiece before the area where the next process of the adhesive removing unit proceeds, or a vacuum inhaler for sucking foreign substances may be used.

A core manufacturing apparatus according to an embodiment of the present invention is an apparatus that can manufacture a laminated core using a strip-shaped material having an adhesive coated on its surface. For example, a core manufacturing apparatus according to an embodiment of the present invention includes a device capable of manufacturing a laminated core using a steel plate strap (self-bonding steel plate: SB steel plate) having an adhesive layer in a semi-cured state at a temperature lower than a predetermined temperature Wherein the laminate member is sequentially formed by blanking the blank, the adhesive layer is removed at a predetermined interval on the surface of the blank by interlocking with the blanking, and the adhesive layer present between the layers of laminated laminated members is heated And then the mixture is cured at a high temperature to produce the laminated core.

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. .

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and thus 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
1a: Surface exposed portion 10: Upper mold
20: Lower mold 100: Adhesive removal unit
110: scraper 120: base body
200: blanking unit 210: blanking punch
220: Blanking die 300: Laminate unit
310: adhesive hardener 320: pinch mechanism
330: Lamination guide 340: Squeeze member
350: Rotation housing 360: Pinch housing
400: Lift 500:
600: upper fixing block 700: lower fixing block
800: intermediate fixed 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:
An adhesive removing unit for partially removing the adhesive layer to divide the laminated cores to expose the surface of the workpiece at predetermined positions along the longitudinal direction of the workpiece;
A blanking unit for sequentially forming the lamina members by blanking the material; And
And a laminate unit for sequentially manufacturing the laminated cores by integrating the lamina members,
The blanking unit comprising:
A blanking punch provided in a vertically movable upper mold for pressurization and blanking of the workpiece, the blanking punch being disposed downstream of the adhesive removal unit with respect to a conveying direction 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 punch and stacked on the upper side of the laminate unit,
Wherein the adhesive removal unit is configured to selectively adhere the adhesive layer to the blanking unit such that the blanking unit is partially synchronized with the blanking unit to partially remove the adhesive layer from the surface at each time the blanking progresses a predetermined number of times, Core manufacturing apparatus. The method according to claim 1,
The adhesive removing unit comprising:
A scraper provided upstream of the blanking unit to scratch the adhesive layer,
And a base body that supports the scraper and is capable of being raised and lowered on at least one of the upper and lower molds for selective contact between the scraper and the workpiece. 3. The method of claim 2,
Wherein the base body includes a rotation driver for rotating the scraper. The method of claim 3,
The scraper includes:
A rotary body connected to the rotary actuator and rotatable by the rotary actuator,
And at least one blade provided on the rotating body. 5. The method of claim 4,
The blade comprising: Wherein the rotating body is provided with elasticity. 6. The method of claim 5,
The rotating body includes:
A blade supporter having a blade receiving groove into which the blade can be raised and lowered and rotated by the rotation driver,
And an elastic body provided in the blade receiving groove for elastically supporting the blade. The method according to claim 1,
Wherein the adhesive removing unit is provided on the upper or lower mold so as to be movable up and down. The method according to claim 1,
Wherein the adhesive removal unit is provided so as to be movable up and down in the receiving portions formed in the upper and lower molds so as to be shifted from each other with a predetermined interval along the conveying direction of the material; Wherein the upper receiving portion is formed downstream of the receiving portion of the lower die with respect to the feeding direction of the material. 9. The method according to claim 7 or 8,
The upper die may be divided into a plurality of bodies along the conveying direction of the work, or may form one integral body;
Wherein the lower die is divided into a plurality of bodies along the conveying direction of the material, or forms a single integral body. The method according to claim 1,
Wherein the blanking punch ascends and descends once by the upper figure every time the material moves by a predetermined pitch; Wherein the adhesive removal unit is selectively synchronized with the blanking unit to form a surface exposed portion at a plurality of pitch intervals along the longitudinal direction of the blank. 11. The method of claim 10,
Wherein the blanking die is provided in the lower die at a distance of N pitch (N is a natural number of 1 or more) in the adhesive removing unit along the feeding direction of the blank. The method according to claim 1,
Wherein the laminate unit is rotatably provided on the lower die.

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