WO2023063447A1

WO2023063447A1 - Apparatus for manufacturing adhesive laminated cores

Info

Publication number: WO2023063447A1
Application number: PCT/KR2021/014232
Authority: WO
Inventors: 우덕균; 지정규; 권재상; 홍이경; 이정일; 강석조
Original assignee: (주)포스코에스피에스
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2023-04-20

Abstract

Disclosed is an apparatus for manufacturing adhesive laminated cores. The apparatus for manufacturing adhesive laminated cores, according to the present invention, comprises: a laminator through which lamination holes are formed in a vertical direction so as to pass laminar members inputted from an upper side of the laminator in a laminated state, and which sequentially forms laminated cores by integrating a plurality of the laminar members passing through the lamination holes from top to bottom, by means of an adhesive method; a support unit which is provided at a lower side of the laminator to be able to move forward and backward in a vertical direction so as to sequentially support the laminated cores discharged from the laminator; and a guide unit which is provided in the support unit and is capable of entering the inside of the laminator up to a predetermined height through a lower end of the laminator in order to induce integral movement of the laminar members. According to the present invention, the orthogonality of the laminated cores can be precisely managed, thickness deviation can be minimized, and the core separation phenomenon caused by an interfacial slip can be prevented.

Description

Adhesive laminated core manufacturing device

The present invention relates to an apparatus for manufacturing an adhesive laminated core for manufacturing a core of a laminated structure by an adhesive method, and more particularly, to an adhesive bonding interface of laminar members (laminar members) for the iron core to form a laminated structure. It relates to an adhesive laminated core manufacturing apparatus for manufacturing a core.

In general, a laminated core refers to a core of a laminated structure manufactured by integrating a plurality of thin plates, that is, laminar members, and, for example, a plurality of laminae obtained by punching a metal strip. It means a core structure in which members are integrated into a laminated structure.

These laminated cores are used as cores of various devices such as rotating devices such as motors, transformers, or iron cores for ignition systems, and various methods of manufacturing them are known.

As a representative method, by continuously forming and stacking laminar members of a predetermined shape using a progressive mold device, and bonding the stacked lamina members layer by layer, the core of the laminated structure, that is, the above-mentioned laminated core is manufactured. It can be.

As methods for stacking/integrating the laminar members, a tab fixing method using an interlock tab, a welding fixing method using, for example, laser welding, a rivet fixing method, and the like are known.

Examples of the tab fixing method are disclosed in patent documents such as Korean Patent Publication Nos. 10-2008-0067426 and 10-2008-0067428. There is a limit to the embossing process for forming the tab.

Recently, a technology (adhesive fixing method) for implementing interlayer bonding of lamina members by an adhesive method has been developed/used. For example, the invention of manufacturing a laminated core by applying an adhesive to the surface of a metal strip supplied to a device (mold) for manufacturing a laminated core and punching the metal strip is disclosed in Korean Patent Registration No. 10-1566491 and Japanese Laid-open Patent It is disclosed in patent documents, such as Unexamined-Japanese-Patent No. 5-304037 and Unexamined-Japanese-Patent No. 2009-297758.

In addition, the invention of manufacturing the above-described laminated core by receiving and punching a metal strip coated with an adhesive is disclosed in Korean Patent Registration No. 10-1659238, Japanese Patent Laid-Open No. 2001-291627 and Japanese Patent Laid-Open No. 2004-023829 It is disclosed in patent documents such as Ho.

According to the conventional adhesive fixing method described above, the cost can be reduced compared to laser welding, and the adhesive fixing method is known as a technology capable of responding to thinning of a steel plate.

According to the above-described adhesive fixing method, the lamina members are integrated into a plurality of sheets by bonding the interface (boundary surface) of the lamina members while passing through the laminator (Laminator), more specifically, the internal space (lamination hole) of the laminator in a laminated state. It can be.

The laminator includes a squeeze member (squeeze ring of Japanese Unexamined Patent Publication No. 2009-297758) for aligning/stacking the laminar members, and the laminator operates at a predetermined timing ( Timing) after rotating the lamina members by a predetermined angle (index rotation), a new lamina member is supplied (index rotation lamination).

An apparatus for manufacturing a laminated core in which the lamina members index rotate is disclosed in Patent Registration Nos. 10-1876292, 10-1990291, and 10-1990296, and the right angle of the laminated core. The index rotational lamination technique itself for managing degree and thickness variation is a well-known technique.

An object of the present invention is to provide an apparatus for manufacturing an adhesive-type laminated core and a method for manufacturing an adhesive-type laminated core capable of preventing relative movement between lamina members forming a laminated core by bonding between layers in an adhesive method.

One form of the present invention: lamination holes are formed in the vertical direction so that laminar members introduced from the top pass through in a laminated state, and the lamina members passing through the lamination holes from top to bottom are bonded to each other in a plurality of layers. Laminators integrally formed to sequentially form laminated cores; a support unit provided at a lower side of the laminator to be able to move forward and backward in a vertical direction so as to sequentially support the laminated cores discharged from the laminator; And it is provided in the support unit, to provide an adhesive laminated core manufacturing apparatus including a guide unit capable of entering the interior of the laminator to a predetermined height through the lower end of the laminator in order to induce the integral behavior of the lamina members.

The supporting unit includes a core table movably provided at a lower side of the laminator to sequentially support the laminated cores; The guide unit, so as to fit into the laminar members of a predetermined height or less, is provided to be able to move up and down on the lower side of the laminator and includes a core guide capable of entering the inside of the laminator; The core guide may move vertically through the core table.

To lift the core table, a first elevator is connected to the core table to support the core table. The core table; It may be rotatably provided on the upper part of the first elevator. In order to elevate the core guide, a second elevator is connected to the core guide to support the core guide.

The core guide; It is rotatably provided on the upper part of the second elevator so that when the lamina members into which the core guide is inserted rotate at a predetermined angle by the laminator, the lamina members into which the core guide is inserted rotate at the same angle, and the laminated core It is possible to prevent slip (Slip) occurrence at the adhesive interface of the lamina members forming them.

In order to take out the laminated core, the upper end of the core guide may be positioned below the upper end surface of the support unit, and may rise to a predetermined height inside the laminator to induce integral behavior of the lamina members.

The laminator may include a heater for curing the adhesive present in the bonding interface of the laminar members. And the upper end of the core guide is capable of rising to a height equal to or higher than the height of the upper end of the heater; A core engaging portion may be formed on an outer circumferential surface of the core guide so as to be caught in the center hole of the lamina members forming shaft holes of the laminated cores in the rotational direction of the lamina members.

The core holding portion; It may be engaged with grooves or protrusions formed on the inner circumferential surfaces of the lamina members for coupling of the shaft holes and shafts of the laminated cores. The core guide; Independent vertical movement with respect to the support unit may be possible, and independent rotational movement with respect to the support unit may be possible.

According to the adhesive laminated core manufacturing apparatus according to the present invention has the following effects.

First, according to the present invention, since the lamina members forming the laminated core move integrally without relative movement to each other inside the laminator, the straightness of the lamina members can be stably managed, and the rotational lamination of the lamina members (index lamination), the perpendicularity of the laminated cores can be precisely managed and the occurrence of thickness deviation can be minimized.

Second, according to the present invention, since the relative rotation (slip phenomenon) between the lamina members can be prevented at the interface between the lamina members during index rotation of the lamina members, the adhesive present between the layers of the lamina members When the laminated core is formed through heat curing of the lamina member integrity can be strengthened and the interfacial split phenomenon can be prevented.

Third, according to the present invention, since the integrated behavior of the lamina members is implemented based on the center hole of the lamina members forming the shaft hole (inner diameter) of the laminated core, a separate structure for guiding the movement of the lamina members is formed. There is no need to do this, and since grooves and/or protrusions formed on the inner circumferential surface (periphery of the center hole) of the lamina members can be set as a standard for the integral behavior of the lamina members in order to firmly couple the axis to the laminated core, the appearance of the finished product It is possible to precisely implement all the behaviors (rotational motion, straight motion) of the laminar member without being limited by.

Fourth, according to the present invention, since maintenance/repair is easily possible without disassembly of the mold, time and cost required for maintenance/repair can be reduced.

The features and advantages of the present invention may be better understood with reference to the following drawings in conjunction with the detailed description of embodiments of the present invention, of which:

1 is a view schematically showing an embodiment of an adhesive-type laminated core manufacturing apparatus according to the present invention;

FIG. 2 is a diagram illustrating a structure in which the device shown in FIG. 1 is applied to a progressive mold type device;

Figure 3 is a view illustrating a method for manufacturing a laminated core by the apparatus shown in Figure 2;

Figure 4 is a view illustrating the structure of the supporting unit and the guide unit of the device shown in Figure 1;

5 is a plan view showing a state in which an embodiment of a core guide applicable to the guide unit shown in FIG. 4 is fitted into an example of a lamina member; and

6 to 8 are diagrams illustrating the operation of the device shown in FIG.

Hereinafter, preferred embodiments of the present invention in which the object of the present invention can be realized in detail will be described with reference to the accompanying drawings. In describing the present embodiment, the same name and the same reference numeral are used for the same configuration, and additional description thereof will be omitted below.

Terms used in this specification are used to describe embodiments of the present invention, and are not intended to limit the present invention, and terms including ordinal numbers such as “first” and “second” constitute the same name. When describing elements, they may be used to distinguish them from each other, but do not define or limit the number of elements.

And when a component is said to be "connected" or "connected" to another component, it may be directly connected or connected to the other component, but a connection with another component in the middle. It should be understood that a relationship, that is, a relationship that is indirectly connected is also included.

In this specification, terms such as "include" or "have" mean that features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, and that one or more other features are present. However, it should be understood that the existence of numbers, steps, operations, components, parts, or combinations thereof, i.e., the possibility of addition is not excluded.

First, an apparatus for manufacturing an adhesive laminated core according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. 1 is a view schematically showing an embodiment of an adhesive laminated core manufacturing apparatus according to the present invention, FIG. 2 is a view illustrating a structure in which the apparatus shown in FIG. 1 is applied to a progressive mold type apparatus, and FIG. 3 is 2 is a diagram illustrating a method for manufacturing a laminated core by the device shown in FIG. 2, and FIG. 4 is a diagram illustrating the structure of a support unit and a guide unit of the device shown in FIG.

1 to 4, an adhesive laminated core manufacturing apparatus (hereinafter referred to as 'core manufacturing apparatus') according to an embodiment of the present invention is a laminator 100 for stacking / combining lamina members (L). Laminator), a support unit 200 supporting the laminated core C discharged from the laminator 100, and a guide unit 300 for the integrated behavior of the lamina members.

The laminator 100 forms a laminated core C while passing the lamina members introduced from the upper side of the laminator in a laminated state. More specifically, stacking holes 100a are formed through the laminator 100 in the vertical direction. In addition, the laminator 100 continuously and sequentially forms the laminated cores C by integrating a plurality of the lamina members L passing through the laminated holes 100a from top to bottom through an adhesive method.

Further, the support unit 200 is provided at the lower side of the laminator 100 to move forward and backward in the vertical direction so as to sequentially support the laminated cores C discharged from the laminator 100 . The supporting unit 200 advances upward toward the laminator 100, supports the bottom surface of the laminated core C discharged from the laminator 100, and descends while supporting the laminated core C. Then, after one laminated core is taken out, it rises again to support the bottom of the next laminated core.

The guide unit 300 prevents relative movement by inducing integral behavior of the lamina members (L) while the lamina members pass through the laminator 100 to form a laminated core. In this embodiment, the guide unit 300 is provided on the support unit 200, and enters the inside (lamination hole) of the laminator 100 to a predetermined height through the lower end (exit) of the laminator 100 component is possible.

In this embodiment, the support unit 200 includes a core table 210 (core support) for supporting the bottom surface (bottom surface) of the laminated core and a first elevator 220 for lifting the core table 210. include

The core table 210, that is, the core support, is provided to be able to move up and down on the lower side of the laminator 100 in order to sequentially support the laminated cores C sequentially discharged from the laminator 100. The first elevator 220 is connected to the core table 210 to move the core table 210 up and down, and is a component that supports and lifts the core table 210 .

The first elevator 220 may include, but is not limited to, a telescopic cylinder such as a hydraulic or pneumatic cylinder, and for example, an electric actuator using a device such as a linear motor that implements linear motion. Various devices capable of realizing the elevation of the core table may be applied as the first elevator 220 . In this embodiment, a telescopic cylinder is applied as the first elevator 220 .

The core table 210 may be rotatably provided on the upper part of the first elevator 220, and the lamina members (L) may be provided to manage the perpendicularity and thickness deviation of the laminated cores (C). During index rotation by the laminator 100, it can rotate together with the laminated core C while supporting the underside of the laminated core discharged from the laminator 100.

As a more specific example, the core table 210 is rotatably installed on the top of the first elevator 220 . For example, a bearing 230 is installed on the upper side of the first elevator 220, and the core table 210 can freely rotate by the bearing 230, that is, it can be installed as a rotating material. there is.

In this embodiment, the first elevator 220 includes a first cylinder head 221 and a first cylinder body 222 that is flexible, and the core table 210 is the base of the first cylinder head 221. It is rotatably provided at the top by the bearing 130. Functions and types of cylinders and bearings are well known to those skilled in the art (hereinafter referred to as 'ordinary technicians'), so additional description thereof will be omitted.

The core table 210, that is, the core support descends while the laminated core C is seated on the upper side of the core table, and when the core table reaches the lower limit position, a core extractor such as a conveyor (shown not), the laminated core may be taken out. After that, the core table 210 rises again to support the lower surface of the laminated core discharged in the next order. Since the function itself of the support unit and the take-out mechanism of the laminated core are known technologies in the field of core manufacturing technology, additional description thereof will be omitted.

The guide unit 300 includes a core guide 310 and a second elevator 320 . The core guide 310 is provided to be able to move up and down on the lower side of the laminator 100, and is inserted into the lamina members (L) reaching a predetermined height or less in the laminator 100.

That is, the core guide 310 has a configuration capable of entering the inside of the liner 100, and enters the inside of the laminator 100 up to a predetermined height through the lower end of the laminator 100, thereby increasing the height below a predetermined height. It penetrates the located lamina members (L) and induces the lamina members supplied through the upper end (inlet) of the laminator 100 to behave integrally as a whole.

The second elevator 320 supports the core guide 310 to move the core guide up and down, and is connected to the core guide 310 to move the core guide 310 up and down.

The second elevator 320 may also include a telescopic cylinder such as a hydraulic or pneumatic cylinder, but is not limited thereto, and for example, the core guide, such as an electric actuator using a linear motor, etc. Various devices capable of realizing the elevation of may be applied as the second elevator 320 . This embodiment is an example in which a cylinder (hereinafter referred to as a 'guide cylinder') is applied to the second elevator 320 .

More specifically, the core guide descends to take out the laminated core (C), and when the core guide 310 reaches the lower limit, the upper end of the core guide is the upper surface of the support unit 200 It descends by the second elevator so that it can be positioned below (upper side of the core table). And, in order to induce the integral behavior of the lamina members (L) (prevent relative movement of the lamina members), the core guide 310 enters the stacking hole 100a, and the core guide 310 The upper end may rise to a predetermined height inside the laminator 100 .

In this embodiment, the core guide 310 passes through the core table 210 and moves vertically, and at the center of the core table 210, a guide hole for lifting and lowering the core guide is provided. formed through the direction. That is, as in the examples shown in FIGS. 7 and 8 , the core guide 310 passes through the core table 210 and moves vertically to the support unit 200, especially the core table 210. It is provided so that it can be lifted.

More specifically, the core guide 310 is provided inside the support unit 200, and the core guide 310 can rise above the core table 210 by the second elevator 320 there is. Therefore, in this embodiment, the core guide 310 has a structure capable of relative vertical movement with respect to the core table 210, and the protruding height of the core guide 310 from the upper side of the core table 210 is The entry height of the core guide 310 into the laminator 100 and the descent of the core guide 310 relative to the core table 210 can be adjusted, through relative motion with respect to the core table 210. Height can be adjusted.

The core guide 310 may be rotatably provided above the second elevator 320 . When the lamina members (L) are index-rotated by the laminator 100 to manage the perpendicularity and thickness deviation of the laminated cores (C), the core guide 310 is the laminated core discharged from the laminator and can rotate together.

As a more specific example, the core guide 310 is rotatably installed at the top of the second elevator 320, that is, the guide cylinder. For example, a bearing 330 is installed on the upper side of the second elevator 320, and the core guide 310 can freely rotate by the bearing 330, that is, it can be installed as a rotating material. there is.

In this embodiment, the bearing 130 supporting rotation of the core table 210 and the bearing 230 supporting rotation of the core guide 310 are separately installed. In this specification, the bearing 130 supporting rotation of the core table 210 is referred to as a first bearing, and the bearing 230 supporting rotation of the core guide 210 is referred to as a second bearing.

Therefore, in this embodiment, the core table 210 and the core guide 310 have a structure capable of mutually independent rotation. However, when the lamina members (L) are index-rotated by the laminator 100, the core table 210 and the core guide 310 simultaneously rotate at the same angle, so that the laminated core discharged from the laminator 100 (C) That is, integral rotation of a plurality of lamina members forming the laminated core on the core table and other lamina members stacked thereon is performed.

More specifically, the guide cylinder of the second elevator 320 in this embodiment comprises a second cylinder head 321 supporting the core guide and a second cylinder body 322 lifting the second cylinder head. include The core guide 310 is rotatably provided on the upper end of the second cylinder head 321 by the second bearing 330 . For example, as described above, the core guide 310 moves up and down through the core table 210, and the second cylinder body 322 is the example shown in FIGS. 7 and 8 As such, it may be a lifting structure provided to be drawn in and out of the first cylinder body 222 in the vertical direction of the support unit. Accordingly, the first elevator may be combined with the second elevator, and for example, the core table and the core guide may be moved up and down by a plurality of cylinders, that is, two or more cylinders.

The core guide 310, when the lamina members into which the core guide 310 is inserted rotates at a predetermined angle by the laminator 100, the same angle as the lamina members into which the core guide 310 is inserted. Rotates to, and prevents the occurrence of slip (Slip) at the adhesive interface of the lamina members, that is, the occurrence of relative rotation between the lamina members.

In this embodiment, the core guide 310 is inserted into the center hole of the lamina members. When the laminar members are combined into a laminated structure by the laminator to form the above-described laminated cores (C), an axially penetrating hole, that is, an axial hole, is formed in the center of the laminated cores (C), and the core guide ( 310) is inserted into the shaft hole of the laminated core discharged from the laminator.

The core guide 310 is caught in the center hole H of the lamina members in the direction of rotation of the lamina members to receive rotational force, and as a reaction thereto, the integral behavior of the laminar members, more specifically, integral rotation guide.

More specifically, the core guide 310 is a core engaging portion 311 formed on the outer circumferential surface of the core guide 310 so as to be caught in the center hole H of the lamina members L in the rotational direction. ) has

This embodiment can be more effectively applied to manufacturing a laminated core having a structure having grooves and/or protrusions on the inner circumferential surface of a hole passing through the center in the axial direction, and a structure for integral behavior of lamina members can be applied to lamina It is possible to induce integral behavior (integral rotation) of the lamina members by using the shape of the laminated core itself without adding it to the outer circumference of the member.

The core engaging portion 311 is engaged with the grooves or protrusions formed on the inner circumferential surfaces of the lamina members, that is, on the rim of the aforementioned center hole. For example, when manufacturing a laminated core (rotor core) having a structure in which a shaft is coupled to a hole (shaft hole) formed in the center, a groove for preventing relative rotation between the shaft and the laminated core is formed in the shaft hole of the laminated core. And / or protrusions are formed, and grooves or protrusions of the same shape are formed in the center hole of the lamina member for manufacturing the laminated core of this structure. The core guide 310 of the core manufacturing apparatus according to the present embodiment is It has a core hooking part 311 of a shape corresponding to the groove and/or protrusion formed in the center hole of the member, that is, of an engaging shape.

As a more specific example, as in the example shown in FIG. 5, in the case of a structure in which a protrusion P is formed in the center hole of the lamina member L, the outer circumferential surface of the core guide 310 has a groove-shaped core. The hooking portion 311 is formed long in the vertical direction.

In the case of a laminated core manufacturing method, that is, index rotation lamination, in which a new lamina member is laminated while integrally rotating the lamina members at a predetermined angle with respect to the axis of the laminate at a predetermined timing, the lamina member ( In the center hole of L), protrusions P are formed at regular intervals.

For example, when protrusions of the same shape are formed in the center hole of the lamina member at an angle of 90 degrees, the laminator 100 rotates the lamina members L at 90 degrees or 180 degrees to perform index rotational lamination. can be done Although not shown, a structure such as a magnet hole for inserting a magnet may be formed in an outer region of the central hole of the lamina member. The lamina member shown in FIG. 5 is an example in which two protrusions P are formed symmetrically with each other at an interval of 180 degrees in a center hole, and a rotation angle of 180 degrees for index rotation lamination may be applied.

In this embodiment, the core guide 310 has a shape corresponding to the center hole of the lamina member, that is, a cylindrical shape, and at least one core hooking part 311 is provided on the outer circumferential surface of the core guide 310 in a vertical direction. Although it is formed long, the shape of the core guide can be changed according to the shape of the laminated core.

And in this embodiment, the core guide 310 is a component capable of independent vertical movement and rotational movement with respect to the support unit 200, and at least one groove for coupling the axis to the center hole of the lamina member When this is formed, the core holding portion may be implemented in a protrusion shape formed long along the vertical direction on the outer circumferential surface of the core guide.

For example, when the core table 210 descends after both the core table 210 and the core guide 310 are raised to the upper limit, the core guide 310 remains at the upper limit height and the core It is possible to induce integral behavior (integral rotation) of the lamina members on the upper side of the table. In addition, since the core table 210 and the core guide 310 are rotatably supported by separate bearings, that is, the first bearing 230 and the second bearing 330, mutually independent rotation is possible. However, in this embodiment, when the lamina members (L) are rotated by the laminator 100, the core table 210 and the core guide 310 simultaneously rotate at the same angle and perform their respective functions.

The present embodiment is an apparatus for manufacturing an adhesive laminated core, that is, an apparatus for manufacturing a core of a laminated structure by bonding the boundary surfaces of laminar members with an adhesive material, and the laminator 100 is a heater for curing the adhesive material (adhesive) by heat. (110; Heater). That is, the laminator 100 includes a heater 110 for curing the adhesive present in the adhesive interface of the lamina members (L).

In addition, it is preferable that the upper end of the core guide 310 can rise from the maximum height of the upper end of the heater 110 to a section below the upper end of the laminator, and in this embodiment, the core guide 310 is the heater ( 110) rises to the upper end (the inlet of the heater) to guide the movement of the lamina members (L).

As described above, the laminator 100 of the present embodiment forms the laminated core C while passing the lamina members L, and integrates the lamina members L by a predetermined number to form the laminated core. do. The laminar member (L) may be formed by blanking in a progressive mold apparatus.

The laminator 100 has an internal space for aligning and lamination and integration of the lamina members L, that is, the above-described laminating hole 100a, and lamina sequentially and continuously supplied to the laminating hole 100a. The members L are stacked in an aligned state.

And the laminator 100, after integrating a predetermined number of laminar members (L) passing downward, that is, a plurality of preset sheets, is a laminated structure that is continuously formed by integrating the lamina members (L), that is, a laminated core ( C) are discharged sequentially. Therefore, the upper end of the laminator 100 becomes the inlet of the lamina member and the lower end of the laminator becomes the outlet of the laminated core C.

Referring to FIGS. 2 and 3 , the laminator 100 is provided below the blanking unit 400 and can be applied to a progressive mold device. The blanking unit 400 is a device for blanking a material for the manufacture of the lamina members (L), for example, a metal strip (S) such as an electrical steel sheet is punched out to sequentially form the lamina members (L). Forming, the lamina member (L) formed at the same time as the punching (blanking) of the material is pushed into the inside of the laminator 100, that is, the lamination hole 100a. Therefore, whenever the metal strip (S) is blanked, the lamina members inside the laminator 100 are pushed and moved downward by one pitch as much as the thickness of the metal strip (S).

The laminator 100 for this embodiment includes a heater 110 for curing the adhesive by heat, a squeeze mechanism 120 for inducing alignment/lamination of the lamina members, and the laminated core (C ) Includes a pinch mechanism (130; Pincher) for preventing the fall.

The squeeze mechanism 120 has a structure through which the lamina members L manufactured by the blanking unit 400 pass through in a forcibly fitted state (press-fitting state) in the vertical direction. More specifically, the squeeze mechanism 120 stacks and lowers the lamina members L so that the lamina members L are stacked in a coaxially aligned state in the upper section of the laminator 100. guide the movement The squeeze mechanism 120 may include at least one hollow squeeze member that penetrates in the vertical direction, that is, a squeeze ring.

And, the pinch mechanism 130 is configured to pass the laminated core (C) in the lower section of the laminator 100, and is provided below the squeeze mechanism 120, and the laminated core (C) A tubular mechanism that is elastically expandable to press the circumference and has a restoring force, or a mechanism that presses the outer circumference of the laminated core by using the elastic force of a spring may be used.

An external guide 140 for guiding the lamina members (L) may be provided between the squeeze mechanism 120 and the pinch mechanism 130. In this embodiment, the heater 110 is provided in a region between the squeeze mechanism and the pinch mechanism 130, and the external guide 140 has a cylindrical shape penetrating in the vertical direction and is provided inside the heater 110. It can be.

And the lamina member passing through the inside of the heater 110 is heated by the heater. For example, a high-frequency induction heating device may be applied as the heater 110, but the type of the heater is not limited thereto. The outer guide 130 and the core guide may be made of a non-conductive material so as not to be affected by high-frequency induction heating.

The pinch mechanism 130 forms a movement passage for the laminated core C in the lower region of the heater 110, and more specifically, a predetermined number of lamina members L than the lamina members L ) is a mechanism for holding the laminated core with a predetermined force by pressing the circumference of the laminated core (C) formed by interlayer bonding, that is, a mechanism for applying lateral pressure. Therefore, the pinch mechanism 130 can prevent the laminated core discharged from the laminator 100 from falling down before being supported by the core table 210 .

Further, the blanking unit 400 includes a blanking punch 410 provided with an upper mold 10 capable of moving up and down, and a blanking die 420 provided below the upper mold 10 . The blanking die 420 is provided directly above the laminator 100 . For example, the blanking die 420 may be coaxially stacked on the upper side of the squeeze mechanism 120 .

Examples of the laminator are disclosed in a number of patent documents including Patent Documents 1 to 5 described in the prior art documents of this specification, and components such as the heater, squeeze mechanism, and pinch mechanism are also disclosed in Patent Document 5 (registered patent publication). 10-1876292), so additional descriptions of these configurations are omitted.

As described above, the laminated core manufacturing apparatus according to the present embodiment, in order to form the above-described laminated core (C) by integrating the lamina members (L) by a predetermined number, between the layers of the lamina members (L) cures the adhesive present in More specifically, the adhesive present between the layers of the lamina members (L) is cured by the above-described laminator 100, particularly the heater 110, and integrates the lamina members.

An adhesive for interlayer adhesion may be applied by an adhesive applicator to the material S passing between the upper mold 10 and the lower mold 20 of the laminated core manufacturing apparatus, or the material already coated with the adhesive, that is, the adhesive coating layer ( The material S having S1 and S2 may be supplied between the upper mold 10 and the lower mold 20. A technology of manufacturing an adhesive laminated core by applying an adhesive to the surface of a material, that is, a metal strip and punching the metal strip, and a technology of manufacturing an adhesive laminated core by receiving and punching a metal strip already coated with an adhesive are those skilled in the art. Since it is a well-known technique, additional description thereof is omitted.

A cooling system for cooling the laminator 100 and its surroundings may be applied to the lower mold 20, and a heat insulating member for blocking heat conduction between components forming the laminator 100, for example, A thermal barrier material such as beryllium copper may be applied.

In addition, the upper mold 10 may further include at least one punch 11 for forming a predetermined slot or hole (for example, the center hole of the lamina member described above) in the lamina member L, , The upper side of the lower mold 20 may be provided with a die hole 21 facing the punch 11 described above. In the progressive mold device for manufacturing laminated cores, examples of molding devices provided to the upper and lower molds for processing the shape of laminar members are variously known, so additional description is omitted.

In FIG. 3, the laminar members (L) stacked up and down inside the laminator 100 are separated based on a solid line, and the boundary surface indicated by the dotted line illustrates a portion (adhesive interface) where interlayer adhesion is made.

The laminator 100 may rotate the lamina members by a predetermined angle for the aforementioned index rotation lamination. For example, the squeeze mechanism 120 and the pinch mechanism 130 may rotate simultaneously at the same angular velocity.

The squeeze mechanism 120 is fixed inside the hollow rotary die 150 capable of rotating in place, and rotates integrally with the rotary die 150 . In this embodiment, the blanking die 420 is also provided on the rotating die and rotates together with the squeeze mechanism 120 . And, the pinch mechanism 130 also rotates simultaneously at the same angle as the squeeze mechanism in place.

The squeeze mechanism 120 and the pinch mechanism 130 are rotated by a rotary actuator, and may rotate by, for example, a gear transmission mechanism. For gear transmission, the rotary die 150 is connected to the first gear 510 rotated by the motor M to receive rotational force, and the pinch mechanism 130 is also connected to the second gear 520. It can be connected and rotated. A ring gear 151 meshing with the first gear may be installed on the rotating die 150 .

Of course, the rotation mechanism of the squeeze mechanism 120 and the pinch mechanism 130 is not limited to the gear transmission method, and may be variously changed, such as a belt transmission method, for example. The rotating die 150 and the pinch 130 are rotatably installed on the lower die by bearings.

In this embodiment, the external guide 140 follows the squeeze mechanism 120 and the pinch mechanism 130 to rotate together, and the heater 110 does not rotate. And, the rotational force of the squeeze mechanism 120 and the pinch mechanism 130 is transmitted to the core guide 310 through the lamina members L, and the lamina member into which the core guide 310 is inserted. Since they are caught on the core guide 310 in the rotational direction to ensure rotational integrity, the interfacial slip phenomenon of the lamina members can be prevented.

Of course, the heater 110, the squeeze mechanism 120, and the pinch mechanism 130 may all be installed inside the rotating die and rotate simultaneously with the core guide 310 described above.

Meanwhile, in order to connect the core table 210 and the pinch mechanism 130, at least one connection pin 610 is provided in any one of the core table 210 and the pinch mechanism 130, and the other A pin hole 620 into which the connecting pin 610 is inserted may be formed in one.

In this embodiment, the connection pin 610 is provided in the core table 210, the pin hole 620 is formed in the pinch mechanism 130, and the connection pin 610 is formed in the pin hole 620. By being inserted, the core table 210 and the pinch mechanism 130 are coupled. Therefore, the core table 210 and the pinch mechanism 130 are rotated by the connecting pin 610 and the pin hole 620. Integrity can be strengthened.

Hereinafter, a process of manufacturing a laminated core by the above-described laminated core manufacturing apparatus with reference to FIGS. 6 to 8 will be described.

As shown in FIG. 6, the supporting unit 200, more specifically, the core table 210 is raised by the first cylinder body 222 and discharged through the lower end of the laminator 100. Laminated core Support the underside of (C). In addition, the core guide 310 of the guide unit 300 enters the inside of the laminator 100 through the lower end of the laminator 100 and enters the hole of the lamina members L having a predetermined height or less, for example, the center It is inserted into the hole (H). At this time, the core hooking part 311 of the core guide is fitted into and engaged with grooves or protrusions formed in the center holes of the lamina members.

In this embodiment, the core guide 310 rises to the inlet of the heater 110 (top of the heater) or the bottom of the squeeze mechanism 120 to guide the integral behavior of the lamina members (L). Also, the core table 210 and the core guide 310 may rise together, or one may rise first, followed by the other.

After the core table 210 and the core guide 310 are raised to a predetermined height (upper limit), as shown in FIG. 7, the core table 210 is moved downward by the lamina members L. This 1 pitch, for example, descends step by step by the height corresponding to the thickness of 1 lamina member, rotates with the laminated core C on the core table 210, and the core guide 310 maintains the height. Guides integral rotation of the laminar members (L) while rotating as one.

And when the upper end of the laminated core C on the core table 210 comes out from the lower end (exit) of the laminator 100, as shown in FIG. 8, the core table 210 descends and the core The guide 310 also descends. At this time, the upper end of the core guide 310 descends to a height equal to or less than the upper side of the core table 210, so that the laminated core C on the core table 210 is not interfered with when being taken out.

Although not shown, the operation of the rotary actuator, the support unit 200, and the guide unit 300 is controlled by a control unit, and the rotary actuator, the support unit 200, and the guide unit 300 control the It can be connected to the unit wired/wireless.

As described above, the embodiments according to the present invention have been reviewed, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope is apparent to those skilled in the art. It is self-evident to

Therefore, the foregoing embodiments should be regarded as illustrative rather than restrictive, and thus the present invention is not limited to the foregoing description and may be modified within the scope of the appended claims and their equivalents.

The present invention relates to a core manufacturing apparatus, which can be used in the field of manufacturing various types of cores such as cores for rotors and stators. can

Claims

Lamination holes are formed in the vertical direction so that lamina members injected from the top side pass through in a laminated state, and the lamina members passing through the lamination holes from top to bottom are integrated by an adhesive method, one by one, so that the laminated cores are sequentially formed. Forming laminator (Laminator);

a support unit provided at a lower side of the laminator to be able to move forward and backward in a vertical direction so as to sequentially support the laminated cores discharged from the laminator; and

It is provided in the support unit, and includes a guide unit capable of entering the laminator up to a predetermined height through the lower end of the laminator to induce integral behavior of the lamina members:

The supporting unit includes a core table movably provided at a lower side of the laminator to sequentially support the laminated cores;

The guide unit, so as to fit into the laminar members of a predetermined height or less, is provided to be able to move up and down on the lower side of the laminator and includes a core guide capable of entering the inside of the laminator; The core guide, adhesively laminated core manufacturing apparatus capable of moving in the vertical direction through the core table.
According to claim 1,

In order to elevate the core table, adhesive laminated core manufacturing apparatus, characterized in that the first elevator is connected to the core table to support the core table.
According to claim 2,

The core table; Adhesively laminated core manufacturing apparatus, characterized in that provided rotatably at the top of the first elevator.
According to any one of claims 1 to 3,

In order to elevate the core guide, the core guide is connected to the second elevator to support the core guide adhesive laminated core manufacturing apparatus, characterized in that.
According to claim 4,

The core guide; It is rotatably provided on the upper part of the second elevator so that when the lamina members into which the core guide is inserted rotate at a predetermined angle by the laminator, the lamina members into which the core guide is inserted rotate at the same angle, and the laminated core Adhesively laminated core manufacturing apparatus, characterized in that to prevent the occurrence of slip (Slip) at the adhesive interface of the lamina members forming them.
According to any one of claims 1 to 3,

To take out the laminated core, the upper end of the core guide can be located below the upper end surface of the support unit, and can be raised to a predetermined height inside the laminator to induce integral behavior of the laminar members Adhesive type, characterized in that Laminated core manufacturing equipment.
According to any one of claims 1 to 3,

The laminator includes a heater for curing the adhesive present in the bonding interface of the lamina members;

The upper end of the core guide is capable of rising to a height equal to or higher than the height of the upper end of the heater; Self-adhesive laminated core manufacturing apparatus, characterized in that the core engaging portion is formed on the outer circumferential surface of the core guide so as to be caught in the center hole (Center Hole) of the lamina members forming the shaft hole of the laminated core in the rotational direction of the lamina members.
According to claim 7,

The core holding portion; Adhesively laminated core manufacturing apparatus, characterized in that engaged with the grooves or projections formed on the inner circumferential surface of the lamina members for coupling of the shaft holes and shafts of the laminated cores.
According to any one of claims 1 to 3,

The core guide; Self-adhesive laminated core manufacturing apparatus, characterized in that independent vertical movement is possible for the support unit.