KR20160029404A - Adhesive Applying Method For Adhesive Type Laminating Core Member Manufacturing Apparatus - Google Patents

Abstract

The present invention relates to an image forming apparatus comprising: an upper mold which is raised and lowered by a press; a pressing member which is provided on the upper mold and ascends and descends by the upper mold; and an adhesive which is periodically pressed by the pressing member while passing under the pressing member A punch which is provided on the upper mold and moves up and down together with the upper mold for blanking the material, and a punch which faces the punch, And a laminate unit for integrating the laminar members sequentially stacked by the blanking of the blank, wherein the laminating unit includes a plurality of laminating units, The adhesive of the adhesive laminated core member manufacturing apparatus for producing the laminated core member by interlaminar bonding the lamina members It discloses a method. The method of applying an adhesive is characterized in that, in one cycle during which the upper face of the workpiece is brought close to the adhesive applicator and the upper face of the workpiece is lowered from the top dead center to the bottom dead center and then returned to the top dead center, And discharging the adhesive through the adhesive applicator in cooperation with the movement, and stopping the discharge of the adhesive in the remaining section.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a laminated core member manufacturing apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of controlling a core member manufacturing apparatus used for manufacturing a core such as a motor or a generator, and more particularly, The present invention relates to a method of applying an adhesive to a laminated core member manufacturing apparatus for producing a laminated core member for a core.

Generally, a laminated core manufactured by laminating lamina members and integrating them is used as a rotor and a stator of a generator, a motor, etc., and a method of manufacturing the laminated core, that is, As a laminated core manufacturing method of stacking and integrally fixing, a tap fixing method using an interlock tap and a welding fixing method and a rivet fixing method using welding, for example, are known.

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 member, Iron loss). Particularly, in the tap-fixing method, the embossing is difficult due to the thinning of the material, that is, the steel sheet, which shows the limitation as a manufacturing technique of the laminated core. The above-mentioned patent publications and the following patent documents disclose various types and shapes of laminated core members.

In another method of manufacturing a laminated core, an adhesive fixing method is proposed in which laminar members are integrated with an adhesive. Korean Patent Laid-Open Publication No. 10-1996-003021 discloses the above-mentioned adhesive fixing method. In the adhesive fixing method disclosed in Korean Patent Laid-Open Publication No. 10-1996-003021, a lamination member laminated in the vertical direction And the lamina members are integrated by applying an adhesive.

In another method of the adhesion fixing method, there is an interlayer bonding method in which an adhesive is applied to the surface of a lamina member to adhere the layers of the lamina members. The laminated core production apparatus of the interlaminar bonding type is characterized in that the surface of the material, that is, the metal strip is brought into contact with the outlet of the nozzle for continuously discharging the adhesive toward the core production material to form a dot shape or a line ) ≪ / RTI >

However, in the above-described conventional adhesive fixing method, the adhesive spreads around or overflows around the nozzle outlet, causing problems such as contamination of the periphery of the nozzle outlet and clogging of the outlet, stiction of the adhesive occurs around the nozzle outlet, Frequent maintenance is required and the consumption of adhesive increases.

In addition, the above-mentioned problems become obstacles to control the discharge pressure of the adhesive, that is, the pressure of the nozzle, and as a result, uniform control of the application amount of the adhesive, the application area and the application position, do.

In addition, when the adhesive is stuck around the nozzle outlet, it is difficult to precisely perform the application of the adhesive due to the proximity of the metal strip and the nozzle outlet, and when the solidified adhesive is transferred to the metal strip, The interlayer adhesion is interrupted, and as a result, the interlayer of the laminated core member is separated, leading to product failure, which may lead to problems such as deterioration in productivity and increase in management cost due to an increase in the defective rate.

Further, in the conventional laminated core manufacturing method, since the adhesive is continuously discharged from the nozzles irrespective of lifting and lowering of the upper mold for the blanking process, it is difficult to apply a certain amount of the adhesive to the surface of the steel sheet (material) It is necessary to precisely control the adhesive supply pressure, i.e., the pressure inside the nozzle, in order to accurately control the nozzle operation time (adhesive application timing).

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 Korean Patent Laid-Open Publication No. 10-1996-0003021,

The present invention has been proposed in order to solve the above-described problems of the prior art, and it is an object of the present invention to provide a method of applying an adhesive of a bonding laminated core member manufacturing apparatus capable of realizing periodic application of adhesive, And the like.

In order to solve the above-mentioned object, the present invention is characterized in that the present invention is characterized by comprising: an upper mold lifted and lowered by a press; a pressing member lifted and lowered by the upper mold provided on the upper mold; A punch for punching the material, a punch disposed on the punch for blanking the material and lifting and lowering the punch with the punch, A die provided on the lower mold so as to be spaced apart from the adhesive applicator by a predetermined distance in a direction of conveying the material in the adhesive applicator and a laminate unit (Laminate Unit) for integrating the lamina members sequentially stacked by blanking of the blank ), And the laminated core member is manufactured by interlaminar bonding the lamina members A method of applying an adhesive to a core member manufacturing apparatus is provided.

The method of applying an adhesive is characterized in that, in one cycle during which the upper face of the workpiece is brought close to the adhesive applicator and the upper face of the workpiece is lowered from the top dead center to the bottom dead center and then returned to the top dead center, And discharging the adhesive through the adhesive applicator in cooperation with the movement, and stopping the discharge of the adhesive in the remaining section.

Wherein the upper interlocking discharge step comprises: When the upper mold is lowered to the bottom dead center so that the material is pushed by the pressing member so as to come close to the adhesive applicator, until the upper mold reaches the bottom dead center at a position spaced a certain distance from the bottom dead center, And a downwardly coupled discharge step of discharging the adhesive toward the bottom surface.

Wherein the upper interlocking discharge step comprises: A rising step of continuously discharging the adhesive toward the bottom surface of the workpiece in succession to the downwardly coupled discharge step until the upper die reaches a position spaced from the bottom dead center by a predetermined distance when the upper die rises from the bottom dead center to the top dead center, And may further include an interlocking discharge step.

Wherein the upper interlocking discharge step comprises: The adhesive is discharged toward the bottom surface of the workpiece only for a period equal to or less than 1/2 of one cycle of the upper mold including the time point at which the upper mold passes the bottom dead center.

More specifically, the topographic interlocking discharging step includes: The adhesive is discharged through the adhesive applicator only while the upper die is below a certain distance from the bottom dead center of the upper die.

Wherein the upper interlocking discharge step comprises: The adhesive is discharged toward the bottom surface of the workpiece only for 1/3 period of one cycle of the upper mold including the time when the upper mold passes the bottom dead center.

A step of lifting and lowering the upper mold by rotating the rotary shaft of the press so that one cycle of the upper mold is performed when the rotary shaft of the press makes one rotation; The adhesive is discharged through the adhesive applicator only during a period in which the rotational angle of the rotary shaft is 120 ° to 240 ° based on when the upper die is at the top dead center and the adhesive is applied to the work during lifting of the upper die And an adhesive applying step.

The adhesive application method of the adhesive laminated core member manufacturing apparatus according to the present invention has the following effects.

According to the present invention, it is possible to reduce the consumption amount of the adhesive and to prevent the surface of the lower mold, particularly the adhesive applicator, from being contaminated by the adhesive, and to prevent the interlayer adhesion failure of the laminated core member from being caused by the adhesive application failure.

According to the present invention, it is possible to prevent the phenomenon that the outlet of the adhesive applicator is clogged by the adhesive and that the adhesive is stuck around the outlet, and it is possible to precisely apply the adhesive in a fixed amount.

Further, according to the present invention, the blanking process and the adhesive application process can be performed simultaneously in synchronization with the blanking process, and the adhesive application timing can be stably and accurately managed.

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 an example of an adhesive laminated core member manufacturing apparatus embodying a method of applying an adhesive according to an embodiment of the present invention; FIG.
Fig. 2 is a longitudinal sectional view schematically showing a mold structure of the adhesive laminated core member manufacturing apparatus shown in Fig. 1 cut in a material conveying direction; Fig.
3 is a longitudinal sectional view along the line "AA" in Fig. 2;
4 is a schematic cross-sectional view of a laminate unit according to one embodiment of the present invention;
FIG. 5 is a cross-sectional view showing a process of integrating lamina members in the interior (laminate hole) of the laminate unit shown in FIG. 4;
6 is a plan view showing various examples of the core member;
FIG. 7 is a perspective view showing an example of a high-frequency heater and a guide of the laminate unit shown in FIG. 4; FIG.
8 is a plan view showing a state where the high frequency heater and the guide shown in FIG. 7 are assembled;
FIG. 9 is a sectional view of FIG. 8; FIG.
FIG. 10 is a perspective view of another example of the high-frequency heater and the guide of the laminate unit shown in FIG. 4;
FIG. 11 is a plan view schematically showing one embodiment of a pinch applicable to the laminate unit shown in FIG. 4; FIG.
12 is a cross-sectional view schematically showing an embodiment of an adhesive applicator for an adhesive application method according to the present invention;
13A and 13B are cross-sectional views showing the operation of the adhesive applicator shown in FIG. 12;
14 is a sectional view showing one embodiment of a nozzle lifting mechanism for lifting and lowering the adhesive applicator;
15 schematically shows another embodiment of an adhesive feeder applicable to the present invention;
16 is a plan view showing an example of an adhesive application process and a blanking process for manufacturing a laminated adhesive layered core member;
17 is a longitudinal sectional view taken along the line "BB" in Fig. 1;
18 is a cross-sectional view showing the lifting and lowering of the upper mold according to the rotation angle of the press rotary shaft;
19 is a view showing an adhesive application section according to the rotation angle of the press rotary shaft; And
FIG. 20 is a view showing a process of discharging the adhesive to the outlet of the adhesive applicator 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.

The present invention relates to a method of manufacturing a laminated core member for a motor core by blanking a continuous strip-shaped material to form lamina members of a predetermined shape, and integrating the lamina members by an interlayer bonding method And more particularly to a method of applying an adhesive to the material.

1 and 2, an apparatus for manufacturing a laminated adhesive layered core member according to an embodiment of the present invention includes: a press mold for blanking a continuously conveyed strip-shaped material to form laminar members of a predetermined shape; An adhesive applicator 100 for applying an adhesive to the workpiece S and a pressing member 200 for pressing the workpiece S to approach the adhesive applicator.

The mold includes an upper mold 10 raised and lowered by the press 1 and a lower mold 20 facing the upper mold 10. The upper mold 10 is provided with a blanking punch 310 and the above- The lower die 20 is provided with a blanking die 320 and the adhesive applicator 100 described above. The press 1 is driven by the motor 2, but it is not limited thereto, and may be driven by another method such as a hydraulic cylinder. The press 1 is provided with a lifting rod 1c for lifting and lowering the upper mold 10 and the lower mold 20 is provided on the press support 3.

In this embodiment, the pressing member 200 is provided on the upper mold 10 and is raised and lowered by the upper mold 10, and pushes the material S down when the upper mold 10 descends. The pressing member 200 is lowered together with the upper mold 10 so that the bottom surface of the workpiece S is brought close to the outlet of the adhesive applicator 100 and pressed by the pressing member 200, An adhesive is applied from the adhesive applicator 100 to the bottom surface of the work S near the outlet of the applicator 100. The die 320 supports the bottom surface of the workpiece S during the blanking process, facing the punch 310, and at a position spaced apart from the adhesive applicator 100 by a predetermined distance in the workpiece conveying direction Respectively.

The lower die 20 is provided with a laminating unit (laminating unit) 400 for integrating laminating members stacked by blanking of a blank. The laminating unit 400 cures the adhesive existing between the layers of the lamina members to integrate the lamina members.

In the present embodiment, the adhesive applicator 100 intermittently discharges the adhesive at every predetermined timing (interlocking with the movement of the upper die 10). More specifically, during one cycle in which the upper mold 10 is lowered from the top dead center to the bottom dead center and then returned to the top dead center, the adhesive applicator 100 The adhesive is discharged through the outlet, and in the remaining section, the release of the adhesive agent is stopped. In other words, when the upper die 10 is lifted and lowered while being linearly reciprocating, the discharge of the adhesive proceeds only during a predetermined interval.

Specific examples of such an adhesive discharge method will be described in more detail later in this specification, and specific examples of each component of the adhesive laminated core member manufacturing apparatus will be described below.

2 to 6, the lynate unit 400 is sequentially formed by blanking a continuously fed material S, for example, a steel strip for manufacturing a motor core (hereinafter, referred to as 'metal strip') The laminar members L are integrated, and more specifically, the adhesive existing between the layers of the laminated lamina members L is cured to integrate a predetermined number of lamina members L into one lump.

More specifically, the lynate unit 400 includes a laminate hole (Laminate Hole) 100a, that is, an adhesive curing device 410 for curing the interlaminar adhesive of the lamina members L continuously passing through the laminate hole . The laminating hole 400a is a space in which the laminating members L are integrally moved while being shifted by a pitch corresponding to the thickness of the single layer laminating member in a state of being stacked in the vertical direction. 400 in the vertical direction.

The adhesive curing device 410 is a device for curing an adhesive present between the layers of the lamina members L by heat. 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 well-known, an additional description thereof is omitted, and the present invention is not limited to the case where the adhesive applied between the layers of the lamina members is most efficiently cured and the periphery, for example, High frequency induction heating is initiated as a way to minimize thermal effects on components.

The lye unit 400 includes a squeezer 420 disposed on the upper side of the adhesive curing unit 410, more specifically, between the adhesive curing unit 410 and the die 320, . The squeeze 420 applies pressure (side pressure and tightening force) to the side surfaces of the lamina members L stacked on the laminate hole 400a by blanking of the metal strip S to align the lamina members L do.

More specifically, the squeeze 420 applies a clamping force (side pressure) to the side of the laminar members L moving downward from the upper side of the adhesive curing device 410 so that the laminar members L And passes through the squeeze 420 in a forced state so that the laminar members L are properly aligned / stacked by the squeeze 420 and moved into the adhesive curing unit 410.

As a result, the squeeze 420 is formed in the laminar members L so that the laminar members L, which are sequentially formed by the blanking of the material S, The laminar members L are sequentially entered into the squeeze 420 / aligned / laminated. The laminar members L enter the adhesive curing unit 410, that is, the high frequency heater through the squeeze 420. The squeeze 420 may be made of a special steel mold such as SKD-11.

A guide 430 for guiding the movement of the laminar members L is provided in the adhesive curing unit 410. The guide 430 is more specifically made of a nonconductive material so as not to be influenced by high frequency induction heating It is preferable to have an engineering ceramics material.

The laminating unit 400 further includes a pincher 440 provided below the adhesive hardener 410, that is, a pincher for holding a side surface of the laminated core member C.

The pinch 440 applies a side pressure (tightening force) to the laminated core member C formed by integrating the product discharged downward from the adhesive hardener 410, that is, the lamina member L, Thereby preventing a sudden drop of the laminated core member C, that is, a momentary drop.

The punch 310 and the die 320 are connected to the metal strip S that continuously passes between the punch 310 and the die 320 in a stepwise manner, (S) are blanked to sequentially form lamina members (L) of a predetermined shape.

In this embodiment, the lamina member L refers to a thin sheet of a single layer produced by blanking the material S, that is, the metal strip. The laminated core member C may be a member constituting a stator or a rotor of a motor and constituting at least a part of the core, for example, a core blade in which a coil is wound, A plan view showing various examples of the adhesive laminated core member and may be manufactured in various shapes according to the core manufacturing and design conditions

The die 320 is opposite to the punch 310 and has a die hole having the same shape as that of the punch 310. The lamina member L simultaneously forms the inner hole or die hole of the die 320, . 2 shows that the blanking region (a portion penetrated by blanking) of the metal strip S is larger than the lamina member L, but the shape / size of the blanking region and the lamina member are substantially the same Which is self-explanatory in the art, forms a lamina member which is the same as the shape of the die 320, that is, the shape and size of the die hole.

The punch 310 is provided on the upper frame 10a more specifically than the upper die 10 and the die 320 is provided on the die frame 20b more specifically than the lower die 20. [ The die 320 is disposed downstream of the adhesive applicator 200, that is, at a position spaced apart from the adhesive applicator 100 by a predetermined distance, in order to perform a blanking process subsequent to the adhesive application process do.

The punch 310 is provided on the upper frame 10a together with the pressing member 200 pressing the metal strip toward the lower mold and the adhesive applicator 100. The punch 310 is integrally formed with the upper mold 10, It moves up and down. Therefore, when the blanking process of the metal strip S is performed by the punch 310 and the die 320, the adhesive application by the adhesive applicator 100 and the pressing member 200 is performed upstream The process proceeds simultaneously.

As described above, the punch 310 and the die 320 sequentially form the lamina members by blanking the material, and the laminate unit 400 is sequentially laminated to the laminate hole 400a by blanking, A laminate hole 400a is formed at the lower side of the die 320 to pass through the lamina members L which are sequentially stacked and integrated with each other, Respectively.

More specifically, the squeeze 420 is provided on the lower side of the die 320 to align the laminar members L that pass downward toward the adhesive curing device 410, And the adhesive hardener 410 is provided on the lower side to integrate the lamina members L through adhesive curing.

The squeeze 420 supports the sides of the lamina members L for sequential stacking of the lamina members and prevents lamination misalignment or misalignment of the lamina members L, , That is, a squeeze ring that entirely surrounds the periphery of the lamina member, that is, the same shape as the die hole. Therefore, when the outer periphery of the laminar member L is circular, the inner hole of the squeeze ring becomes circular, and when the lamina member is a T shape, the squeeze ring also has a T- Shape.

The squeeze 420 may be a ring type or a barrel type which surrounds the outer periphery of the lamina members L. The squeeze 420 may be a pin or a pin which divides and supports the outer periphery of the lamina members L at a plurality of positions, It may be a block structure. The laminar members L are pushed by the punch 310 in a state of being pressed into the squeeze 420 so that the inside of the squeeze 420 is shifted by one pitch And the squeeze holes formed in the squeeze 420 are part of the laminate holes.

In the present embodiment, the above-described guide 430 is provided inside the adhesive curing device 410. The guide 430 induces alignment and direct passage of the object placed in the adhesive hardener 410, that is, the high frequency heater, and the guide 430 may be formed as described above Engineering Ceramics materials, ie non-conductive guides are applied.

A barrier material 450 for thermal disconnection between the squeeze 420 and the adhesive curing device 410 may be provided on the adhesive curing device 410. The barrier material 450 may block the gap between the squeeze 420 and the high frequency heater 110 so that the barrier material 450 may be removed from the inside of the adhesive curing device 410 Thereby minimizing or preventing the other surrounding articles, particularly the squeeze 420, from being generated by high frequency induction. An example of the barrier material 450 is a shield material made of beryllium copper.

4, it is preferable that a cooling passage 460 for cooling the lower die, particularly the die holder 20c, for example, a cooling water passage is provided around the adhesive hardening device 410, The squeeze 420 may be provided with a cooling path 460. The adhesive curing device 410 is disposed inside a cooling block having the cooling passages 460, and the outer periphery of the adhesive curing device 410 is surrounded by the cooling block.

Meanwhile, the pinch 440 assists the aligning and taking out of the product C moving downward in the adhesive hardener 410 by applying a side pressure to a product (laminated and cured core member) passing through the inside thereof, (C) is prevented from falling suddenly.

The pinch 440 includes a pinch block 441 and an elastic member or pinch spring 442 for elastically supporting the pinch block 441. The pinch block 441 includes a pinch block 441, To prevent the core member (C) from dropping rapidly to the bottom of the liner hole (400a) after passing through the adhesive curing device (410).

The blocking member 450 may be disposed between the adhesive curing unit 410 and the pinch 440. The cooling pipe 460 may be provided around the outer periphery of the pinch 440. [

The die 320, the squeeze 420, the guide 430, and the pinch 440 are disposed coaxially with the lower die 20 to form a part of the lynate hole 400a described above, At the bottom of the hole 400a, a take-out support 470 for supporting the bottom surface of a product (laminated core member C) discharged through lamination and curing is provided so as to be able to move up and down.

The takeout cylinder 470 descends in a state where the core member C is seated and when the takeout receiver 470 reaches the bottom of the laminate hole (stacking barrel), the take- C) to the take-out passage to help take out the product.

In FIG. 5, although a gap is formed between the lower core member C and the upper core member, they are actually stacked in contact with each other and continuously pass through the liner hole 400a. The side surfaces of the laminar members L and the side surfaces of the laminated core member C are in close contact with the squeeze 420 and the pinch 440 more specifically than the inner surface of the lynate hole 400a.

7 to 9, the adhesive hardener 410, that is, the high-frequency heater includes a coil 411 that forms a passage for a high-frequency current, and the coil 411 includes a hardening hole And is wound around the circumferential surface 410a. More specifically, the coil 411 has a tubular coil or coil conduit spirally buried in a coil block 312, and terminals for applying a high-frequency current are connected to both ends of the coil conduit 411a And 411b so as to protrude outside the coil block 412.

The coil block 112 is formed with the above-described curing hole 410a in the vertical direction, and a cooling fluid such as cooling water is supplied / discharged in the direction of the arrow in FIG. 7 to the coil 411, that is, the coil conduit. The guide 430 is disposed in the curing hole 410a.

The guide 430 may be a ring-type or a barrel-type block structure or a split-type structure. The guide 430 shown in Fig. 7 is an empty hollow cylindrical block, which is applicable when the outer shape of the lamina member is circular, for example, in the shape shown in Fig. 6 (a) the inner hole or guide hole of the guide 430 may have a "T" shape when the lamina member is a "T" shape as shown in Fig.

The gap between the inner circumferential surface of the curing hole 110a and the outer circumferential surface of the guide 430 is adjusted in consideration of the thermal expansion of the heated object and the guide 430, May be made smaller in size than the curing holes 110a.

Of course, as shown in FIG. 10, the guide may include a plurality of guide pins 431 which are divided and arranged along the inner circumferential direction of the inner profile of the curing hole 410a It is possible.

11, a plurality of pinch blocks 441 are spaced apart from each other along the perimeter of the laminated core member C in the lynate hole 400a. For example, (400a) are provided in units of a certain angle. The pinch 440 may be of a moving type and a fixed type in which the pinch 440 is fixed in place, but is preferably of the moving type in consideration of thermal expansion. In FIG. 11, when the pinch spring 442 is omitted and the pinch block 441 is fixed in place so as not to move, it is an example of a fixed type pinch.

The pinch block 441 is spaced apart from a plurality of positions along the circumference of the core member C and supported by the pinch spring 442 or elastic member, . Therefore, the pinch 440 in this embodiment is of the moving type, and can be a fixed type pinch when the pinch block is fixed to the laneate hole 400a without positional fluctuation. Of course, the squeeze 420 may also be of the moving type, such as the pinch type, which is not the ring type, for example, the fixed type described above.

Hereinafter, one embodiment of the adhesive applicator will be described with reference to FIG. 12 and FIGS. 13A and 13B, and it is needless to say that examples of the adhesive applicator applicable to the present invention are not limited to the structure described below.

12 and 13A and 13B, the adhesive applicator 100 of the present embodiment is configured to apply the adhesive to the metal strip at a predetermined timing (i.e., at regular intervals) A base body 110 to be filled and an adhesive discharge unit 112 for discharging the adhesive.

More specifically, the base body 110 receives an adhesive at a predetermined pressure so that the adhesive is discharged from the adhesive discharge unit 112. In this embodiment, the adhesive is applied to the inside of the base body 110 The internal space of the base body 110 itself becomes an adhesive passage irrespective of the width of the internal space 111 formed in the base body 110. [

In the case where the adhesive applicator 110 is a nozzle type, the base body 110 is also referred to as a nozzle body, hereinafter referred to as a nozzle block, The same reference numerals as those in FIG.

The adhesive discharge unit 112 is an outlet of the adhesive applicator 100 and protrudes from the upper surface 114 of the nozzle block 110 to be separated from the upper surface 114 of the nozzle block 110 ), But the shape of the peaks is not limited thereto. More specifically, the adhesive discharging portion 112 forms an adhesive discharging peaks rising in the form of peaks at the upper side 114 of the nozzle block.

The adhesive discharge unit 112 has a structure in which the side surface, that is, the circumferential surface is inclined so that the adhesive flows down on the slope 112a, and the width is narrowed toward the upper end of the adhesive discharge unit 112 And may have a shape such as a cone or a polygonal horn having an opening at the top for discharging the adhesive. Accordingly, the adhesive that overflows to the top of the adhesive discharge unit 112, that is, the top of the adhesive discharge unit 112, can flow down on the slope 112a of the adhesive discharge unit 112.

In this embodiment, the top of the adhesive discharge unit 112 is an adhesive outlet, and a through hole (not shown) passing through the upper end of the adhesive discharge unit 112 and communicating with the inside of the base body 110 120 are formed in the interior of the adhesive discharge portion 112.

The upper side 114 of the base body is formed so as to be inclined upward from one side to the other side so that the adhesive flowing down from the adhesive discharge unit 112 is not stagnant on the upper side of the base body 110, A drain 115 is formed on an upper surface of the base body 110 to drain the adhesive accumulated on one side (left side in FIG. 12) of the upper side surface 114 do.

The drain 115 is formed in a portion of the upper surface 114 of the nozzle block having a relatively low height. In this embodiment, the drain 115 penetrates the upper surface 114 of the nozzle block and is formed vertically. Therefore, the residue, to which the metal strip S is not applied, flows down the slope 112a of the adhesive discharge portion and the upper side 114 of the nozzle block, and is discharged through the drain 115. [

The upper side wall 113 is protruded from the upper side 114 of the nozzle block and the upper side wall 113 is flush with the upper end of the adhesive discharge portion 112, The upper side wall 114 may be surrounded by the upper side wall 113. However, for example, the adhesive discharge portion 112 may be formed on the upper side wall 113 ). ≪ / RTI >

The base body 110 and the adhesive discharging portion 112 are integrally formed as the same material. In the present exemplary embodiment, the base body 110 and the adhesive discharging portion 112 are formed by the adhesive stuck But is not limited to, a Teflon material so that it can be prevented or minimized.

For example, the base body 110 and the adhesive discharging portion 112 may be formed of a plastic material made of a resin having no polarity or low surface tension so that the stiction of the adhesive can be prevented or minimized, more specifically, It may be made of a material which does not adhere to the adhesive such as Teflon or PP (Polypropylene) and PE (Polyethylene). Of course, the base body 110 and the adhesive discharging portion 112 may be made of a metal material, for example, stainless steel.

In the present embodiment, when the adhesive discharge unit 112 and the metal strip S come close to each other, the adhesive discharged from the adhesive discharge unit 112 is deposited on the surface of the metal strip S, The adhesive application is performed.

More specifically, the adhesive is applied by approaching the metal strip S and the adhesive discharging portion 112, and the metal strip S is pressed by the pressing member 200 to be lowered Thereby approaching the upper end of the adhesive discharging portion 112.

The adhesive discharged from the adhesive discharging portion 112, particularly, the adhesive which convexly protrudes upward from the adhesive outlet, may be adhered to the metal strip S (S) and the adhesive discharging portion 112 ), The adhesive application can be performed.

In this embodiment, the base body 110 is provided in a lower frame 20, particularly a die frame 20b, and a lifter (not shown) for supporting the metal strip S in an upward direction Lifter) is provided. 14, the lifter according to the present embodiment includes a lift pin 22a for supporting the metal strip and a lift spring 22b for supporting the lift pin 11 upward, The strip S is elastically supported in the upward direction to separate the metal strip S from the adhesive outlet 112 or the nozzle outlet 112.

Therefore, when the pressing force of the pressing member 200 is removed, the metal strip S rises by the lifter pin 22a and the lifter spring 22b, and the metal strip S and the adhesive discharging portion 112 ). The lower frame 20, particularly the die frame 20b, is a portion to which the base body 110 is fixed. A nozzle mounting hole is formed in the die frame 20b, and the base body 110 Are accommodated and fixed.

13A and 13B, the base body 110 is supplied with the adhesive through the adhesive supply pipe 140 of the adhesive supply unit. More specifically, the adhesive contained in the adhesive tank T is supplied to the base body 110 by an adhesive discharge pressure, for example, a pneumatic device for applying air pressure, a hydraulic device or other pump, do.

That is, the adhesive feeder includes an adhesive tank T and a pneumatic device for transporting the adhesive from the adhesive tank T to the base body 110, or a hydraulic pressurizing device such as a hydraulic pump, a piston or a piston, The adhesive is supplied to the base body 110 through the adhesive supply pipe 140 at a predetermined pressure.

More specifically, it may include a plurality of adhesive discharging portions 112 arranged in parallel with each other on the base body, and the adhesive discharging portions 112 may be formed by applying an adhesive application position D (see FIG. 16, T And a dot-shaped adhesive is applied to a plurality of points of the shape lamina member). In the present embodiment, the adhesive is distributed at a predetermined pressure in the inner space 111 of the base body 110, and simultaneously supplied to the plurality of adhesive discharging units 112. That is, the adhesive is uniformly supplied to the plurality of adhesive discharging portions 112 provided in parallel to the base body 110, and the adhesive is simultaneously applied to a plurality of points, that is, various positions.

For example, the adhesive feeder is controlled so that the adhesive is filled in the base body 110 at a predetermined pressure for a predetermined period of time at predetermined timings, and the adhesive in the base body 110 is discharged When the metal strip S is pushed by the pressing member 200 and approaches the adhesive discharging portion 112, the metal strip S is pressed toward the outside of the metal strip S, A dot-shaped adhesive is applied to the surface of the substrate. However, in the present invention, the discharge of the adhesive proceeds more than the lifting of the upper mold, more specifically, at intervals of a certain period in conjunction with the lifting and lowering of the metal strip by the pressing member.

The upper end of the upper side wall 113 corresponds to the upper side height of the die frame 20b and the upper end of the upper side wall 113 is connected to the upper end of the metal strip S, the metal strip S may be positioned close to the adhesive discharge unit 112 by a predetermined distance. In this case, the bottom dead center of the metal strip S and the bottom dead center of the adhesive There is a gap between the discharge portions 112, and the application amount of the adhesive and the application area can be uniformly managed.

The pressing member 200 is provided on the upper mold 10 and moves up and down together with the upper mold 10 as described above. More specifically, the pressing member 200 is provided on the upper frame 10a provided at an interval above the die frame 20b, and moves up and down together with the upper die 10.

The upper frame 10a is an upper holder for supporting the pressing member 200 and the lower die 20b is a lower holder for supporting the base body 110 .

The above-described adhesive discharging portion 112 may be arranged in parallel at a plurality of points according to the shape of the core member C and the adhesive application position. Therefore, as described above, when a plurality of adhesive discharging portions 112 are provided in parallel in the base body 110 and the core member C is in the "T" shape, A plurality of adhesive discharging portions 112 are provided in parallel to each other at a mutually spaced position to simultaneously perform adhesive application.

14, the base body 110 includes a nozzle lifting mechanism 150 (hereinafter referred to as a lifting mechanism) provided in the lower holder 20c, for example, a cam mechanism or a hydraulic / It is lowered at every predetermined timing by the elevating device 150 such as a pneumatic cylinder to prevent the adhesive to be applied to the metal strip S. [

More specifically, in the case where the laminated core member C has a ten-layer structure composed of ten lamina members, the adhesive application step is omitted once every 10 pitches of the metal strip S, To prevent adhesion between the core members (C).

For this purpose, the elevating mechanism 150 descends the base body 110 once each time the metal strip S moves by a predetermined pitch, for example, 10 pitches, so that the adhesive discharging portion 112 and the metal strip (S), thereby preventing the application of the adhesive. In the laminated core member C shown in Fig. 2, the dotted line indicates the portion where the interlaminar adhesion is made, and the solid line indicates the portion between the laminated core members where there is no interlaminar adhesion.

The elevating mechanism 150 includes an elevating body 151 that supports the base body 110 and can be elevated inside the lower frame 10, And a supporter (152) for raising the lifting body to a top dead center of the lifting body.

In the present embodiment, the lifting body 151 is fixed to the lower side of the base body 110 and moves integrally with the base body 110. The elevating mechanism 150 further includes a descender 153 such as a spring for descending the elevating body 151 and restoring the bottom dead center of the elevating body. However, the structure and operation of the elevating mechanism are not limited to the above-described examples.

In this embodiment, the lower die 20 includes a base frame 20a constituting a base portion and dies 20b and 20c provided on the upper side of the base frame 20a.

The die includes a die frame 20b on which the die 320 and the base body 110 of the adhesive applicator are installed and a lower frame 20b on the lower side of the die frame 20b, And a nozzle mounting hole is formed in the die frame 20b. However, the structure of the lower die 20b and 20c is not limited thereto.

During the period in which the adhesive applicator 100 is lowered by the elevating mechanism and then returned to the original position, the adhesive applying step is omitted, the adhesive is not discharged to the outlet of the adhesive applicator 100, Only the blanking process proceeds on the downstream side of the apparatus 100. [

The pressing member 200 functions as a stripper in the blanking process and also functions as a compression plate or a pressure plate for pressing the metal strip S toward the adhesive applicator 100 in an adhesive application process An elastic member (for example, a coil spring) 210 and an elevation guide 220 for guiding the elevation of the urging member 200 are provided between the urging member 200 and the upper frame 10a.

Hereinafter, the operation of the adhesive applicator 100 according to the present embodiment will be schematically described with reference to Figs. 12 to 14. Fig.

The metal strip S is moved by a predetermined distance every predetermined stroke or press stroke and passes between the pressing member 200 and the die frame 20b so that the metal strip S S reaches the adhesive application position, the upper mold 10 is lowered as shown in FIG. 13B so that the pressing member 200 presses the metal strip S downward.

Thus, the metal strip S is close to the adhesive discharging portion 112, and the adhesive discharged upward through the outlet of the adhesive discharging portion 112 is adhered to the surface (bottom surface) of the metal strip S . When the upper mold 10 is lifted, the metal strip S moves away from the adhesive discharging portion 112 by the lifter 22a and the lifter spring 22b, thereby completing the adhesive application process once .

The adhesive overflowing from the adhesive discharging portion 112 or spreading around the outlet flows along the slope of the adhesive discharging portion 112 and the upper surface 114 of the base body to thereby discharge the drain 115 ≪ / RTI >

Meanwhile, the adhesive applicator 100 may be operated by a syringe type adhesive supplier as shown in FIG. The syringe-type adhesive supply device comprises an adhesive tank (T) and a piston (P). More specifically, the adhesive tank T is provided with a piston P, and the piston P pushes the adhesive in the adhesive tank T and supplies the adhesive to the base body 110. That is, when the piston P enters the inside of the adhesive tank T, the adhesive in the adhesive tank T is pressed by the piston P, and is pressed and fed to the base body 110.

The manufacturing process of the laminated core member by the laminated core member manufacturing apparatus having the above-described configurations is as follows.

(Not shown) such as a conveying roller or the like so that the metal strip S passes while passing through the pressing member, that is, the stripper 200 and the die frame 20b by a predetermined unit length (one pitch) When the metal strip S is supplied, the pressing member 200 mounted on the upper mold 10 and the punch 310 descend integrally with the upper mold 10, Press the top surface.

At this time, the metal strip S is pressed by the pressing member 200 to approach the outlet of the adhesive applicator 100, thereby applying an adhesive to the bottom surface of the metal strip S.

At the downstream side of the adhesive application region, blanking of the work is progressed by the punch 310 descending simultaneously with the pressing member 200. At the same time as the laminating hole 400a, that is, inside the lamination barrel The integration process of the lamina members sequentially stacked by the blanking proceeds.

The laminating barrel 400a is a passage formed by the squeeze 420 and the adhesive hardener 410 and further by the pinch 440. The laminating of the lamina members L and the curing of the adhesive proceed Thereby forming a passage.

The squeeze 420 and the pinch 440 align the laminating members L and the laminated core members C passing through the lamination barrel and the adhesive curing device 410 is rotated by high frequency induction And the adhesive existing between the layers of the lamina members L is cured by the generated heat.

When the application of the adhesive and the blanking are completed, the upper mold 10 is lifted and the metal strip S is lifted by the lifter pin 22a and the lift spring 22b from the outlet of the adhesive applicator 100 Away. Then, when the metal strip S moves again by one pitch, the above-described process is repeated, and the production of the adhesive laminated core member C proceeds.

17 to 20, the upper mold 10 is raised and lowered by the press 1 as described above, and the pressing member 200 is mounted on the upper mold 10, do.

When the press (1) is driven, the upper die (10) is lowered from the top dead center to the bottom dead center, and then returned to the top dead center. When the upper mold 10 descends from the top dead center to the bottom dead center, the material S is pushed by the pressing member 200 so that the bottom of the material or metal strip S is close to the adhesive applicator 100 do.

In the present invention, during a cycle in which the upper die 10 descends from the top dead center to the bottom dead center and then returns to the top dead center, only a certain predetermined section, that is, In response to the movement (elevation) of the upper mold 10, the upper interlocking joint discharge, that is, the upper interlocking discharge process, in which the adhesive applicator 100 discharges the adhesive is performed. In other words, the adhesive is discharged through the adhesive applicator 100 only during a predetermined period of one period of the upper mold 10, and the adhesive discharge is stopped in the remaining section.

The upper mold interlocking discharge step is a step in which when the upper mold is lowered to the bottom dead point so that the workpiece S is pushed by the pressing member 200 and approaches the adhesive applicator 100, And discharging the adhesive toward the bottom surface of the work (S) until the bottom dead center is reached at a position spaced a certain distance from the bottom dead center.

The upper phase interlocking discharge step may include a step of discharging the upper mold 10 until the upper mold 10 reaches a position spaced from the bottom dead center by a predetermined distance when the upper mold 10 ascends from the bottom dead center to the top dead center, And discharging the adhesive toward the bottom surface of the work (S) successively.

In the present embodiment, the upper phase interlocking discharge step may be performed only during a cycle equal to or less than 1/2 of one cycle of the upper mold, more specifically, for 1/3 cycle including the time when the upper mold 10 passes the bottom dead center, The adhesive is discharged from the applicator.

More specifically, the adhesive applicator 100 discharges the adhesive toward the bottom surface of the workpiece S only while the upper die 10 is within a predetermined distance from the bottom dead center of the upper die.

17 and 18, the upper die 10 is moved up and down once by the motor 2 (see Fig. 1) when the rotary shaft 1a of the press makes one revolution. The rotary motion of the press rotary shaft 1a is converted into a linear reciprocating motion of the upper mold 10. For this purpose, a device for converting the rotary motion into a linear reciprocating motion such as a cam mechanism or a crank is provided in the press 1, In the embodiment, a cam 1b is provided on the press rotary shaft 1a and a lift rod 1c is provided on the lower side of the cam 1b to contact the surface of the cam 1b. The rotary motion of the press rotary shaft 1a is converted into the linear reciprocating motion of the upper die 10 by the rod 1c. The mechanical mechanism itself, which converts the rotational motion into a linear reciprocating motion, is a well-known technique, so that further explanation thereof is omitted.

Referring to FIGS. 18 and 19, the phase-interlocking discharging step includes a step of rotating the pressing shaft 1 a so that one cycle (one-time raising and lowering) of the upper die 10 is performed when the pressing rotary shaft 1 a makes one rotation, A step of lifting and lowering the upper mold by rotating the upper mold during the lifting and lowering step of the upper mold, and discharging the adhesive through the adhesive applicator (100) ) Of an adhesive agent.

In the adhesive applying step, the adhesive applicator 100 forms a reference (when the upper mold 10 is at the top dead center) at a reference position (this position is 0 deg.) And the rotational angle of the press rotating shaft 1a is 90 degrees The adhesive is discharged only in the interval of 120 ° to 240 ° rather than the interval of 270 °.

18 (a) shows a state in which the upper die 10 is at the top dead center, that is, the rotational axis 1a of the press is at the reference position (0), and FIG. 18 (b) 18 (c) shows a state in which the upper die 10 is at the bottom dead center, that is, when the press rotary shaft 1a is rotated 180 degrees from the reference position 18 (d) shows a state in which the discharge of the adhesive is finished in a state in which the press rotary shaft 1a is rotated 240 占 from the reference position.

Therefore, in the embodiment of the present invention, as shown in FIG. 19, a specific example of the application of the adhesive for discharging the adhesive in a section where the rotation angle of the press rotary shaft 1a is 120 ° to 240 ° is disclosed. FIG. And the adhesive dispenser 100 discharges the adhesive in the adhesive dispensing section.

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.

1: Press 10: HYPER
20: Lower mold 100: Adhesive applicator
200: pressing member 310: punch
320: die 400: laminate unit
410: adhesive curing machine 420: squeeze
430: guide 440: pinch

Claims (7)

An upper mold provided on the upper mold and lifted and lowered by the upper mold, and an adhesive applying agent for applying an adhesive to the lower surface of the material periodically pressed by the pressing member while passing under the pressing member A punch which is provided on the upper mold and moves up and down together with the upper mold for blanking the material, and a punch for moving the material in the adhesive applicator And a laminate unit for integrating the lamina members sequentially stacked by the blanking of the blank, wherein the laminar members are arranged at a predetermined distance from each other, A method of applying an adhesive to a laminated core member manufacturing apparatus for producing a laminated core member by interlayer bonding :
The upper mold is lowered from the top dead center to the bottom dead center so that the bottom surface of the material is close to the adhesive applicator and then returned to the top dead center in a period of a predetermined period, And discharging the adhesive through the applicator and stopping the discharge of the adhesive in the remaining section. The method according to claim 1,
Wherein the upper interlocking discharge step comprises:
When the upper mold is lowered to the bottom dead center so that the material is pushed by the pressing member so as to come close to the adhesive applicator, until the upper mold reaches the bottom dead center at a position spaced a certain distance from the bottom dead center, And a lowered interlocking discharge step of discharging the adhesive toward the lower surface of the laminated core member manufacturing apparatus. 3. The method of claim 2,
Wherein the upper interlocking discharge step comprises:
Wherein the upper mold is moved upward from the bottom dead center to the top dead center, and then the upper mold is continuously lifted up to the bottom of the blank until the upper mold reaches a position spaced from the bottom dead center by a predetermined distance, Further comprising an interlocking discharge step for applying the adhesive to the adhesive layer. The method according to claim 1,
Wherein the upper interlocking discharge step comprises:
And the adhesive is discharged toward the bottom surface of the workpiece only for a period equal to or less than 1/2 of one cycle of the upper mold including the time when the upper mold passes the bottom dead center. . 5. The method of claim 4,
Wherein the upper interlocking discharge step comprises:
Wherein the adhesive is discharged through the adhesive applicator only while the upper die is below a predetermined distance from the bottom dead center of the upper die. The method according to claim 4 or 5,
Wherein the upper interlocking discharge step comprises:
Wherein the adhesive is discharged toward the bottom surface of the workpiece only for 1/3 of one cycle of the upper mold, including the time when the upper mold passes the bottom dead center. The method according to claim 6,
Wherein the upper interlocking discharge step comprises:
A step of lifting and lowering the upper mold by rotating the rotary shaft of the press so that one cycle of the upper mold is performed when the rotary shaft of the press makes one rotation; And
The adhesive is discharged through the adhesive applicator only in a section where the rotational angle of the rotary shaft is 120 ° to 240 ° based on when the upper die is at the top dead center, And applying the adhesive to the adhesive layer.

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