KR102473845B1 - System And Method For Manufacturing Adhesive Type Laminated Core - Google Patents

Abstract

The present invention discloses an adhesive-type laminated core manufacturing system and an adhesive-type laminated core manufacturing method for manufacturing a laminated core by bonding interfaces of lamina members for manufacturing a laminated core by an adhesive method. The laminated core manufacturing system according to the present invention includes: an adhesive applicator for applying an adhesive to a strip-shaped material that is transported at a predetermined pitch; an adhesive supply device connected to the adhesive applicator and supplying the adhesive to the adhesive applicator; And an adhesive heater provided in at least one of the adhesive applicator and the adhesive supply device. According to the present invention, since the adhesive can be spread more widely on the surface of the material due to increased fluidity, the interfacial adhesive force (bonding force) between the lamina members can be strengthened without increasing the amount of adhesive applied.

Description

Adhesive type laminated core manufacturing system and laminated core manufacturing method {System And Method For Manufacturing Adhesive Type Laminated Core}

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

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

The above-described laminated cores are used for cores of various devices such as rotating devices such as motors, transformers, or iron cores for ignition systems, and various methods of manufacturing such laminated cores are known.

As a representative method, when lamina members of a predetermined shape are continuously molded and laminated using a laminated core manufacturing system (device) such as a progressive die, and the laminated lamina members are combined in multiple sheets, the laminated structure The core, that is, the aforementioned laminated core may be manufactured.

As a method of combining and integrating the lamina 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 the bonding of laminar members by an adhesive method has been developed/used. For example, an adhesive is applied to the surface of a material supplied to a device (mold) for manufacturing a laminated core, for example, a metal strip such as an electrical steel sheet, and the metal strip is punched to form a laminated core by an adhesive method. The manufacturing invention is disclosed in patent documents such as Korean Patent Registration No. 10-1566491, Japanese Unexamined Patent Publication No. 5-304037, and Japanese Unexamined Patent Publication No. 2009-297758.

According to the above-described adhesive fixing method, the lamina members formed by the blanking punch pass through the inside of the die in a laminated state, and in the process, the lamina members are integrated by a plurality of sheets by bonding the interface (boundary surface) of the lamina members. can 1 is a view showing an example of a lamina member and a laminated core, and is an example in which a laminated core (C) is formed by stacking and bonding a plurality of lamina members (L) in the various ways described above. Of course, the shape of the laminar member is not limited to the example of FIG. 1 and varies.

In addition, according to the conventional adhesive fixing method described above, the core manufacturing cost can be reduced compared to the method of manufacturing a laminated core using laser welding, and the adhesive fixing method is known as a technology capable of responding to thinning of a steel plate.

In order to manufacture the laminated core by the above-described bonding method, the adhesive is applied to the metal strip in a local area, for example, in the form of a dot, for each forming part of the lamina member, and the interface at the interface (contact surface) of the lamina member. If the adhesion is not even and uniform, the laminated core may be cracked and divided at the interface of the lamina members, and the performance and quality of the core may deteriorate.

Japanese Unexamined Patent Publication No. 2009-297758, Laminated iron core manufacturing device, published on December 24, 2009 Registered Patent Publication No. 10-1599291, adhesive laminated core member manufacturing device and adhesive application unit, registered on February 25, 2016

An object of the present invention is to provide an adhesive laminated core manufacturing system and an adhesive laminated core manufacturing method capable of increasing the fluidity of an adhesive applied to a material for interfacial bonding of lamina members.

One form of the present invention is an adhesive laminated core manufacturing system for manufacturing a laminated core by bonding the interfaces of laminar members for manufacturing a laminated core by an adhesive method: applying an adhesive to a strip-shaped material transported at a predetermined pitch an adhesive applicator; an adhesive supply device connected to the adhesive applicator and supplying the adhesive to the adhesive applicator; And it provides an adhesive laminated core manufacturing system comprising an adhesive heater provided in at least one of the adhesive applicator and the adhesive supply device.

The adhesive applicator; It includes a nozzle block provided on any one of the lower mold and the upper mold of the progressive mold and having an adhesive receiving chamber, and an adhesive discharge unit provided on the nozzle block and discharging the adhesive from the adhesive receiving chamber. The adhesive heater may be provided in the nozzle block.

The adhesive supply device includes an adhesive cartridge accommodating the adhesive, and an adhesive supply pipe connecting the adhesive cartridge and the adhesive applicator; The adhesive heater may be provided in the adhesive cartridge.

The adhesive laminated core manufacturing system includes: an accelerator applicator for applying a curing accelerator to a portion of the surface of the material to which the adhesive is applied or to an opposite portion thereof; and an accelerator supply device connected to the accelerator applicator and supplying the curing accelerator to the accelerator applicator. And the adhesive laminated core manufacturing system; An accelerator heater provided in at least one of the accelerator applicator and the accelerator multiplier may be further included.

Another form of the present invention is to sequentially form and laminate lamina members of a predetermined shape while passing a strip-shaped material at a predetermined pitch, and bond the interfaces of the lamina members by an adhesive method to form laminated cores. A method for manufacturing an adhesively laminated core sequentially comprising: heating an adhesive for interfacial bonding of the lamina members; applying the heated adhesive to the surface of the material; And it provides an adhesive laminated core manufacturing method comprising the step of blanking the material to form a laminar member having the adhesive applied to the surface.

The laminated core manufacturing apparatus and adhesive laminated core manufacturing method according to the present invention have the following advantages.

First, according to the present invention, since the adhesive can spread more widely on the surface of the material due to increased fluidity, the interfacial adhesive force (bonding force) between the laminar members can be strengthened without increasing the amount of adhesive applied.

Second, according to the present invention, since the adhesive and the accelerator are applied to the surface of the material in a preheated state, interfacial bonding between lamina members can proceed more quickly and the bonding strength can be improved.

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 the embodiments of the present invention, of which:
1 is a perspective view showing an example of a laminar member and a laminated core;
Figure 2 is a view showing an embodiment of an adhesive-type laminated core manufacturing system according to the present invention;
Figure 3 is a view schematically illustrating the connection structure of the adhesive applicator and the adhesive supply device of Figure 2;
4 is a view showing an example of an adhesive discharge unit applicable to the adhesive applicator of FIG. 2;
Figure 5 is a view showing another embodiment of the adhesive laminated core manufacturing system according to the present invention; and
6 is a view showing another embodiment of an adhesive laminated core manufacturing system according to the present invention.

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 embodiments, the same names and the same reference numerals are used for the same components, and additional descriptions thereof are omitted below.

Terms used in this specification are used to describe the embodiments of the present invention, and when a component is referred to as "connected" or "connected" to another component, it is directly related to the other component. It may be connected or connected, but it should be understood that it includes a connection relationship in which another component exists in the middle, that is, a relationship indirectly connected.

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, with reference to FIGS. 2 to 4, an embodiment (first embodiment) of an adhesive laminated core manufacturing system according to the present invention will be described in detail.

An adhesive-type laminated core manufacturing system according to an embodiment of the present invention, in a laminated state in which lamina members, that is, thin metal pieces, are overlapped, to manufacture a core having a structure in which the interfaces of the lamina members are integrated by an adhesive method, that is, an adhesive-type laminated core. It is a core manufacturing device for

For example, the self-adhesive laminated core manufacturing system combines the interfaces of the lamina members formed by the blanking of the laminated core manufacturing material (S), more specifically, the strip-shaped (strip-shaped) material by an adhesive method. It can be implemented in the form of a core manufacturing device that manufactures a laminated core, and as a more specific example, an adhesive is applied to a metal strip such as a material (S), for example, an electrical steel sheet, and blanking of the material It can be implemented in the form of a device, that is, a progressive mold, of a structure for manufacturing a laminated core by integrating a plurality of laminar members formed by the interfacial (boundary surface) bonding method.

2 to 4, in the laminated core manufacturing system according to the first embodiment of the present invention, an adhesive is applied to the material (S) for interfacial bonding of the lamina members (L) forming the laminated core (C). It includes an adhesive applicator 100 for applying and an adhesive heater 200 for applying heat to the adhesive. Also, the adhesive applicator 100 is connected to an adhesive supply device 300 for supplying the adhesive to the adhesive applicator 100 .

The adhesive applicator 100, as described above, is a device for applying adhesive to the material (S) for interfacial bonding of lamina members, and applies the adhesive to the strip-shaped material (S), and applies the adhesive An adhesive may be interposed at the interface (boundary surface) of the lamina members by the group 100.

For example, the adhesive applicator 100 applies the adhesive to the material S that is transported by a predetermined distance, that is, a predetermined pitch, at each predetermined timing, and more specifically, the lamina An adhesive is applied to each portion where the member L is to be formed (region to be blanked). Adhesive may be simultaneously applied in a dot form by the adhesive applicator 100 to a plurality of points within the area to be blanked.

As in the example shown in FIG. 2, the laminated core manufacturing system according to the present embodiment applies an adhesive to a continuously transported metal strip, that is, a strip-shaped material S, and blanks the material to form a lamina member. (L) is continuously and sequentially formed, and an apparatus for manufacturing a laminated core by an adhesive fixing method, that is, a bonding method, may be implemented as a progressive mold type laminated core manufacturing apparatus.

In the above-described progressive mold-type laminated core manufacturing apparatus, the adhesive applicator 100 applies adhesive at predetermined timings to a predetermined position of the continuously transported material S, for example, the metal strip described above. do.

And the adhesive heater 200 is a device for preheating the adhesive before the adhesive is applied to the material (S), the adhesive heater 200 is the adhesive applicator 100 and the adhesive supply device It is provided on at least one of 300, and the adhesive may be applied to the material S in a state in which fluidity is increased by heat. More specifically, as in this embodiment, the adhesive may be heated (preheated) by the adhesive heater 200 in advance before being discharged from the adhesive applicator 100 to the outside of the adhesive applicator.

In other words, the adhesive heater 200 may be applied only to the adhesive applicator 100 or only to the adhesive supply device 300, and may be applied to both the adhesive applicator 100 and the adhesive supply device 300. may apply to all. It is natural that the appropriate preheating temperature of the adhesive can be adjusted according to the type of adhesive, and since various temperature control heater technologies are also known, additional description thereof will be omitted.

The adhesive applicator 100 in this embodiment includes a nozzle block 110 having an adhesive receiving chamber 101 and an adhesive discharge unit 120 provided in the nozzle block 110.

When the laminated core manufacturing system according to the present embodiment is implemented in the form of the above-described progressive mold, the adhesive applicator 100 may be provided in at least one of the upper mold 10 and the lower mold 20 of the progressive mold. have. The upper mold 10 is an upper body of the press device and is an elevating component for processing the material S, and the lower mold 20 is provided below the upper mold 10 as a lower body of the press device. .

The upper mold 10 is provided with a blanking punch 410 for punching the material S to form an edge of the lamina member L, and the lower mold 20 has a blanking punch facing the blanking punch 410. A die 420 is provided. Therefore, the blanking of the material S is performed in the area where the blanking punch 410 and the blanking die 420 are installed, that is, in the blanking area.

The upper mold 10 may include an elevating press body 11, also called an upper holder, and a stripper 12. The stripper 12 presses the metal strip S downward when the upper mold 10 descends, and separates the metal strip S from the blanking punch 410 when the upper mold 10 ascends. Although not shown, the upper body is provided with a component for fixing various punches, for example, a punch fixing plate.

The lower mold 20 may include a plurality of components, and may include, for example, a base body, also called a lower holder, and a die plate on which the blanking die 420 is installed.

The adhesive applicator 100 is provided at a position spaced apart from the blanking area by a predetermined distance, and is provided upstream of the blanking area based on the transport direction of the material (S). As in the present embodiment, when the adhesive applicator 100 and the lower die are installed together with the blanking die 420, the adhesive applicator is upstream of the blanking die 420 based on the transfer direction of the material S. (100) is placed.

In addition, a processing punch 13 for forming a predetermined slot, hole, protrusion, etc. in the lamina member (L) may be additionally mounted on the upper mold 10, and the lower mold 20 includes the aforementioned processing punch and It is apparent to a person skilled in the art (one skilled in the art) that facing processing dies 21 may be provided.

Since structures of the upper and lower molds 10 and 20 for manufacturing laminated cores are variously known in the art, additional description of the upper and lower molds will be omitted. Reference numeral 14 denotes a configuration for elastically supporting the stripper 12, that is, an elastic member such as a spring.

According to this embodiment, when the material (S) passes between the upper mold 10 and the lower mold 20 while moving by a predetermined distance at a predetermined timing, the adhesive applicator 100 is the adhesive heater 200 The preheated adhesive is applied to the material (S), and the area where the adhesive is applied in the material (S) is punched out by the above-described blanking punch 410 and the blanking die 420, and the above-described lamina member ( L) to form

And, under the blanking die 420, a stacking unit 500 for realizing alignment and stacking coupling of the lamina members L is disposed. In addition, a pressure backing unit 600 supporting the laminated core C discharged from the laminated unit 500 may be provided below the laminated unit 500 .

The lamination unit 500 forms a laminated core C while passing the lamina members L in a laminated state. In other words, the laminar members (L) passing through the lamination unit 500 from top to bottom in a laminated state are integrated one by one by bonding to form the lamination cores C continuously, and the lamination unit 500 ) The laminated cores (C) are sequentially discharged downward. Further, the back pressure unit 600 supports and descends the laminated core C discharged from the laminated unit 500 downward.

The stacking unit 500 may include a squeeze mechanism 510 (squeeze member) and a heater 520 installed below the blanking die 420 .

The squeeze mechanism 510 is also called a squeeze ring because it is manufactured in a ring shape that penetrates in the axial direction, and the squeeze mechanism 510 is the lamina member at the lower side of the blanking die 420. Aligned stacking and straight passage of (Ls) can be induced.

In other words. The squeeze ring 510 passes downward while aligning the laminar members (L) sequentially formed by the interaction of the blanking punch 410 and the blanking die 420 in a coaxially stacked state. It is a component and guides the movement of the lamina members (L).

The blanking punch 410 and the blanking die 420 are devices for blanking the material, that is, the metal strip (S) for the manufacture of the above-described lamina members (L), by punching the metal strip (S) to form a lamina The members (L) are sequentially formed, and the lamina member (L) formed by blanking is supplied to the inside of the lamination unit 500, more specifically, the squeeze ring 510 by the blanking punch 410 .

And whenever the metal strip (S) is blanked, the lamina members (L) inside the squeeze ring 510 are pushed down by the blanking punch 410 to move stepwise by the thickness of the metal strip (S), , The squeeze ring 510 induces coaxial alignment and stacking of the laminar members (L) inside the stacking unit 300.

On the other hand, the lamina member (L) passing through the area where the heater 520 is installed is heated by the heater 520, and as a result, the adhesive present at the interface of the lamina member (L) is cured by heat, Accordingly, a predetermined number of lamina members (L) are integrated in an adhesive manner. An example of the heater 520 may be a high-frequency induction heating device, but the type of the heater is not limited thereto.

In addition, a pinch mechanism 530 for preventing the laminated core C from falling may be further provided below the heater 520 . The heater 520 is provided in a region between the squeeze mechanism 510 and the pinch mechanism 530, and the pinch mechanism 530 surrounds the laminated core C in the lower section of the laminate unit 500. It is a configuration that passes through the clamped state. As the pinch mechanism 530, various structures are known, such as a tubular mechanism that elastically clamps the circumference of the laminated core C or a mechanism that presses the outer circumference of the laminated core by using the elastic force of a spring.

In addition, the lamination unit 500 is a rotation lamination such as index rotation lamination disclosed in Patent Registration No. 10-1990291 and Patent Registration No. 10-1990296 or skew index lamination disclosed in Patent Registration No. 10-1507104. For this purpose, it may be implemented as a structure capable of rotating the lamina members inside the stacking unit by a predetermined angle.

Since the lamination unit 500 and the pressure backing unit 600 themselves are variously known in the art, and rotational lamination technology is also known, additional descriptions of these components and operation mechanisms are omitted.

In other words, an adhesive is applied to the surface of a material (S), for example, a metal strip, which passes between the upper mold 10 and the lower mold 20 of the laminated core manufacturing apparatus by a predetermined pitch, and the metal strip Since the technology of manufacturing an adhesive laminated core by punching itself is a known technology to those skilled in the art, known technologies such as the blanking punch 410, the blanking die 420, and the lamination unit 500 are known. Additional descriptions of applicable components are omitted.

In this embodiment, the adhesive applicator 100 is provided on the lower mold 20 described above, and applies the adhesive to the surface of the material (S), more specifically, to the bottom surface of the material (S). Of course, since the adhesive applicator 100 is provided in the upper mold 10 described above, the adhesive may be applied to the upper surface of the material S when the upper mold descends.

The adhesive discharge unit 120 discharges the above-described preheated adhesive from the adhesive accommodation chamber 101 to the outside. The adhesive discharge unit 120 may have a nozzle-type structure, for example, a structure in which a channel becomes narrower toward the outlet 121, and the adhesive discharge unit 120 includes a nozzle valve 130 for opening and closing the adhesive discharge unit. may be provided.

The nozzle valve 130 blocks the outlet of the adhesive outlet 120, and when a portion (valve tip) protruding outward from the outlet of the adhesive outlet 120 is pressed by the material S, the adhesive outlet The exit 121 can be opened by retracting into the 120 .

The nozzle valve 130 is supported toward the outlet 121 by an elastic member 140 provided inside the nozzle block 110, for example, a coil spring, and the elastic member 140 provides the The nozzle valve 130 is pushed to close the outlet 121 of the adhesive discharge unit.

In this embodiment, the elastic member 140 elastically supports the nozzle valve 130 upward, and accordingly, the nozzle valve 130 has a structure capable of moving forward and backward in the vertical direction.

Therefore, when the upper mold 10A descends and presses the metal strip S downward, the metal strip S presses the nozzle valve 130 downward, and thus the outlet 121 of the adhesive discharge unit It is open, and the adhesive inside the adhesive receiving chamber 101 is applied to the lower surface of the metal strip S while being discharged to the outside by internal pressure.

In this embodiment, a plurality of adhesive discharge units 120 may be integrally formed on the body of the adhesive applicator, that is, the nozzle block 110, and the plurality of adhesive discharge units 120 on the nozzle block 110 That is, adhesive nozzles may be assembled. The structure of the adhesive applicator 100 can be changed in various ways, and since various types of adhesive applicators are disclosed in a number of domestic and foreign patent documents such as Registered Patent Publication Nos. 10-1599291 and 10-1547258, the present invention Various types of adhesive applicators can be applied.

The adhesive applicator 100 may omit the application of the adhesive at a predetermined time in synchronization with the blanking punch 410 for separation between the laminated cores C.

For example, when the adhesive applicator 100 descends so that the nozzle valve 130 of the adhesive applicator is not pressed by the material, the application of the adhesive may be omitted. Since a technique of omitting the application of adhesive at predetermined intervals by moving the adhesive applicator is also known, additional description will be omitted. Of course, the adhesive applicator 100 may be operated electronically so that adhesive application may be omitted at predetermined times. For reference, when the lamina members (L) are laminated in the lamination unit 500 in FIG. 2, the dotted line is an interface where adhesion is made, and the solid line is a boundary between laminated cores where adhesion is not performed.

In the present invention, the adhesive applicator 100 applies an adhesive in a preheated state with increased fluidity to the surface of the material S, thereby increasing the adhesive area at the interface of the lamina members L. As an existing invention, the adhesive heater (200; 200A) may be provided in the adhesive applicator 100 as in this embodiment.

More specifically, the adhesive heater 200A may be provided in the nozzle block 110 . In this embodiment, an adhesive heater (200A), for example, an adhesive heater in the form of an electric heater, is provided in the bottom portion (base block) of the adhesive accommodation chamber 101. That is, a plate-shaped electrothermal adhesive heater 200A may be provided on the lower side of the nozzle block 110. Of course, the adhesive heater 200A may be provided at another part of the nozzle block 110, for example, around the nozzle block 110, or built into the wall of the nozzle block (circumferential wall of the adhesive accommodation chamber). It may also be applied to other parts of the adhesive applicator, for example, to the adhesive dispensing part. That is, the application position of the adhesive heater in the adhesive applicator may be variously changed.

The adhesive supply device 300 may include an adhesive cartridge 310 that accommodates the adhesive, that is, an adhesive storage container, and an adhesive supply pipe 320 connecting the adhesive cartridge 310 and the adhesive applicator 100. can

An adhesive heater (200; 200B) may also be provided in the adhesive supply device 300. For example, an adhesive heater 200A may be provided in the adhesive cartridge 310 . When the adhesive heater 200B provided in the above-described adhesive supply device 300 is referred to as a first heater and the adhesive heater 200A provided in the adhesive applicator 100 is referred to as a second heater, in this embodiment, A structure in which the adhesive cartridge 310 is inserted into the first heater 200B is illustrated. That is, the first heater 200B may be made of a hollow tubular electric heater, and the adhesive cartridge 310 may be inserted into the first heater 200B.

Accordingly, the adhesive inside the adhesive cartridge 310 may be heated by the first heater 200B, and the adhesive applicator 100 in a state preheated to a predetermined temperature by the first heater 200B can be sent to For example, the adhesive inside the adhesive cartridge 310 may be pressure-transmitted by air pressure, but the pressure-transfer method is not limited thereto. ) may be provided.

The adhesive cartridge 310 may be provided in the lower mold 20, and is connected to the adhesive applicator 100 installed in the lower mold 20 by the adhesive supply pipe 320 to the outside of the lower mold 20. It can also be installed separately.

According to the adhesive laminated core manufacturing system having the above-described structure, before the adhesive is applied to the surface of the material, it is heated by the above-described adhesive heater 200, that is, the first heater 200B and/or the second heater 200A. Since it can be (preheated), the adhesive can spread more widely on the surface of the material by improving the fluidity of the adhesive.

Next, with reference to FIGS. 5 and 6, other embodiments (second embodiment and third embodiment) of the adhesive laminated core manufacturing system according to the present invention will be described.

Other embodiments of the adhesive laminated core manufacturing system according to the present invention may further include an accelerator applicator 700 and an accelerator supply device 800.

In other words, other embodiments of the adhesively laminated core manufacturing system according to the present invention include an adhesive applicator 100, an adhesive heater 200, an adhesive supply device 300, an accelerator applicator 700, and an accelerator supply device ( 800) may be included.

In the second and third embodiments of the adhesive laminated core manufacturing system according to the present invention, the adhesive applicator 100, the adhesive heater 200, and the adhesive supply device described in the above-described embodiment (first embodiment) (300) can be equally applied. For example, the second and third embodiments of the adhesive laminated core manufacturing system according to the present invention include the accelerator in the progressive mold type adhesive laminated core manufacturing system including the configurations described in the first embodiment described above. The applicator 700 and the accelerator supply device 800 may be implemented as an additional structure.

The accelerator applicator 700 is configured to apply a curing accelerator, more specifically, a material that lowers the curing temperature of the adhesive. Further, the accelerator supply device 800 supplies the curing accelerator to the accelerator applicator 700 and is connected to the accelerator applicator 700 .

More specifically, the accelerator applicator 700 applies the curing accelerator to a portion of the surface of the material S to which the adhesive is applied or to an opposite portion thereof. The type of curing accelerator applied to the surface of the material (S) is a known technique that can be appropriately determined according to the specifications of the adhesive.

The adhesive applicator 100 and the accelerator applicator 700 skip the application of the adhesive and the hardening accelerator at predetermined times in synchronization with the blanking punch 410 for separation between the laminated cores C. can do.

The accelerator applicator 700 may be provided in the upper mold 10 together with the above-described blanking punch 410 or may be provided in the lower mold 20 together with the blanking die 420 .

For example, as in the example shown in FIG. 5 (second embodiment), when the adhesive applicator 100 and the accelerator applicator 700 are provided on the lower mold 20, the accelerator applicator 700 A curing accelerator is applied to a portion of the surface of the material where the adhesive is applied. And, as in the example shown in FIG. 6 (third embodiment), when the adhesive applicator 100 is provided on the lower mold 20 and the accelerator applicator 700 is provided on the upper mold, the accelerator applicator 700 applies a curing accelerator to a portion of the surface of the material opposite to the portion to which the adhesive is applied.

6 shows an example in which the adhesive applicator 100 and the accelerator applicator 700 are provided at positions facing each other, but are not limited thereto, and the accelerator applicator is shifted a certain distance from the adhesive applicator; For example, it may be installed on an upper mold so as to be disposed in a region facing the accelerator applicator shown in FIG. 5 .

The adhesive laminated core manufacturing system may further include an accelerator heater 900 provided in at least one of the accelerator applicator 700 and the accelerator supply device 800. That is, the accelerator heater 900 may be applied to the accelerator applicator 700 and/or the accelerator supply device 800 .

The structures of the accelerator applicator 700, the accelerator supply device 800, and the accelerator heater 900 are the adhesive applicator 100, the adhesive supply device 300, and the adhesive heater ( 200) can be implemented with the same structure. That is, the accelerator supplying device may include the accelerator cartridge 810 and the accelerator supply pipe 820, and the pressure-feeding method of the accelerator may also be implemented in the same way as the pressure-feeding method of the adhesive. Although the accelerator heater is not shown in the accelerator applicator 700 in FIG. 6 , the accelerator heater may be applied to the accelerator applicator shown in FIG. 6 as in the example shown in FIG. 5 .

According to the second and third embodiments of the present invention, the curing reaction time for interlayer adhesion of laminar members can be shortened, and the fluidity of the preheated (preheated) adhesive and curing accelerator is increased, so that the adhesive and the curing agent are cured. The accelerator can be spread evenly over a larger area.

On the other hand, in the present invention, lamina members of a predetermined shape are sequentially formed and laminated while passing a strip-shaped material at a predetermined pitch, and laminated cores are sequentially manufactured by bonding the interfaces of the laminar members by an adhesive method. It can be provided in the form of an adhesive laminated core manufacturing method.

The adhesive-type laminated core manufacturing method according to the present invention includes the step of pre-heating the adhesive for interfacial bonding of the lamina members (L) before discharging it from the adhesive applicator (adhesive heating step), and applying the adhesive to the heated adhesive A step of discharging the material (S) and applying it to the surface of the material (S) (adhesive application step), and a step of blanking the material (S) to form a lamina member having the adhesive applied to the surface (blanking step). can

At the same time as, before or after the adhesive application step, a step of applying a hardening accelerator to the material (accelerator application step) may be additionally performed. As described above, the curing accelerator may be applied to the material in a preheated state.

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 of the present invention will be appreciated by 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.

10: upper type 20: lower type
100: adhesive applicator 110: nozzle block
120: adhesive discharge unit 200: adhesive heater
300: adhesive supply unit 310: adhesive cartridge
320: adhesive supply pipe 410: blanking punch
420: blanking die 500: stacking unit
600: back pressure unit 700: accelerator applicator
800: accelerator supply device 900: accelerator heater

Claims (7)

A laminated core manufacturing system for manufacturing a laminated core by bonding the interfaces of lamina members for manufacturing a laminated core by an adhesive method:
An adhesive applicator for applying adhesive to a strip-shaped material transported by a predetermined pitch;
an adhesive supply device connected to the adhesive applicator and supplying the adhesive to the adhesive applicator;
an adhesive heater provided in at least one of the adhesive applicator and the adhesive supply device;
an accelerator applicator for applying a curing accelerator to a portion of the surface of the material to which the adhesive is applied or to a portion opposite to the portion to which the adhesive is applied;
an accelerator supply device connected to the accelerator applicator and supplying the curing accelerator to the accelerator applicator; and
an accelerator heater provided in at least one of the accelerator applicator and the accelerator supply device;
The adhesive applicator; It includes a nozzle block provided on any one of the lower mold and the upper mold of the progressive mold and having an adhesive receiving chamber, and an adhesive discharge unit provided on the nozzle block and discharging the adhesive from the adhesive receiving chamber;
The adhesive heater, the adhesive laminated core manufacturing system, characterized in that provided in at least one of the nozzle block and the adhesive supply device. delete delete According to claim 1,
The adhesive supply device includes an adhesive cartridge accommodating the adhesive, and an adhesive supply pipe connecting the adhesive cartridge and the adhesive applicator;
The adhesive heater is an adhesive laminated core manufacturing system, characterized in that provided in the adhesive cartridge. delete delete delete

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