KR101729289B1 - Apparatus for manufacturing laminated core by adhesive type - Google Patents

Abstract

The present invention relates to an adhesive laminated core manufacturing apparatus for laminating a core sheet by an adhesive lamination method by applying an adhesive to a strip moving in a single progressive mold apparatus. The apparatus comprises an upper mold and a lower mold, A punching punch and a blanking punch are sequentially transported from an upper portion of a lower mold to form a core sheet and laminating the core sheet; and a plurality of punching punches mounted on the upper and lower molds, respectively, A first adhesive applying device and a second adhesive applying device for applying an adhesive to the upper and lower surfaces of the strip during the application of the adhesive, wherein the adhesive is a two-component adhesive composed of a hardener and a base, and the first and second adhesive application devices By making it possible to apply a hardener and a base, It can be an adhesive coating, and there is an effect that can contribute to improve productivity laminated core.

Description

[0001] APPARATUS FOR MANUFACTURING LAMINATED CORE BY ADHESIVE TYPE [0002]

The present invention relates to an apparatus for producing a laminated core. More particularly, the present invention relates to an adhesive laminated core manufacturing apparatus for laminating a core sheet by an adhesive lamination method by applying an adhesive to a strip moving in one progressive mold apparatus.

In the conventional motor core lamination method, a core strip is continuously formed by punching a slot portion, a tooth, and the like sequentially to a strip supplied to a progressive mold apparatus, and finally, The motor core is manufactured by stacking and fixing a predetermined number of sheets. A method of fixing a core sheet is known as an embossing lamination method in which embossing is formed on each core sheet and the core sheets are pressed and bonded to each other at the time of lamination, as disclosed in JP-A-10-2005-0026882.

In this embossing laminated motor core, since the shape of male and female protrusions formed on the base material is fastened in a forced fit manner, the steel core acts like a speed restricting jaw installed on the road, resulting in loss of iron loss and magnetic flux density. In addition, there is a problem that the drop rate is lowered and vibration noise occurs due to the resonance phenomenon.

In order to solve such a problem, in the adhesive lamination system, in Patent Publication No. 10-0119014, a die supported by a lower mold and a strip positioned at the upper portion of the die and moving upward and downward and supplied to the upper surface of the die A punch holder for supporting the punch at the outer periphery of the punch under the support of the upper mold, an adhesive supply means for supplying an adhesive to the upper side or the side of the strip, And a laminated ring supported by a clamp of the side pressure for a predetermined height.

In addition, in Japanese Patent Application Laid-Open No. 10-1164803, when a press mold is operated, a certain amount of bond is put into a strip attached to a lamination separating jig attached to a mold, and when the desired number of punches is reached, And then the laminate separator jigged up when it is started again is reintroduced, and the product is repeatedly produced by the desired number of times.

However, in the above-mentioned conventional adhesive lamination system, in applying the adhesive, the adhesive is simply sprayed on the upper side or the side surface of the strip in the adhesive supply means, or the adhesive is dropped in the lake connected to the lamination separation jig, It takes a lot of time, and the application is not accurately performed at the application point where the adhesive is to be applied, and the adhesive may scatter around and adversely affect the mold.

Accordingly, the present inventor intends to propose a more improved adhesive laminated core manufacturing apparatus to solve the above problems.

It is an object of the present invention to provide a bonding method and a bonding method which can reduce the loss of iron loss and magnetic flux density significantly by applying the adhesive lamination method and improve the efficiency of the motor because of excellent shape tolerance and tightening strength such as squareness and planarity, And to provide a laminated core production apparatus.

The apparatus for producing a laminated core according to the present invention comprises:

A mold apparatus for forming a core sheet and laminating the core sheet by punching a strip which is composed of an upper mold and a lower mold and is sequentially conveyed from an upper portion of a lower mold by a piercing punch and a blanking punch mounted on an upper mold,

A first adhesive applying device and a second adhesive applying device mounted on the upper mold and the lower mold to apply an adhesive to upper and lower surfaces of the strip while the punches strike the strip,

The first and second adhesive applying units may include an adhesive discharging unit for discharging an adhesive to at least one or more application points of a top surface or a bottom surface of the strip on which the core sheet is formed; An adhesive supply unit for supplying the stored adhesive to the adhesive discharge unit by applying a predetermined pressure; And a cam driving part for moving the adhesive discharging part up and down.

In the present invention, the adhesive is a two-component adhesive in which the first liquid and the second liquid are mixed and cured, and the first liquid and the second liquid can be respectively applied to the first and second adhesive application devices.

In the present invention, the first adhesive applying device may be mounted between the piercing punch and the blanking punch, or may be partially inserted into the internal space of the blanking punch, and between the piercing punch and the first adhesive applying device, To remove foreign substances on the application point.

In the present invention, the first adhesive applying device may be mounted on one side of the upper mold to which the strip is supplied.

In the present invention, the adhesive discharging portion includes a discharging portion main body and a discharging portion cover, a through hole corresponding to the applying point is formed in the discharging portion main body, a discharging pin is inserted into the through hole, A nozzle protruding from one side of the through hole, a nozzle support coupled with the nozzle, and a nozzle spring elastically supported by the nozzle support and the step formed in the through hole.

In the present invention, the ejection pin may be formed with a diffusion preventing hole in the circumferential direction at a distance from the discharge tube through which the adhesive is discharged.

In the present invention, the cam driving portion is constituted by a cam member that moves in the horizontal direction to move the adhesive discharging portion up and down in the vertical direction, and a driving device that drives the cam member, and the first surface of the cam member, A convex portion and a concave portion formed by successively arranging an inclined plane and a plane in correspondence with the second surface of the first substrate.

In the present invention, the driving device counts the number of punching steps of the punch, and moves the cam member forward and backward so that the adhesive application is not performed at a predetermined number of times.

According to the present invention, by using the adhesive lamination method, it is possible to efficiently utilize the working space while greatly reducing the manufacturing time and equipment cost required for producing the laminated core, and to quickly and stably apply the adhesive at the desired application point, Thereby contributing to an improvement in productivity.

1 is a sectional view of a laminated core production apparatus according to the present invention.
2 is a view showing a state in which an adhesive is applied to a core sheet according to the present invention.
3 is a perspective view showing a schematic structure of an adhesive applying apparatus according to the present invention.
4 is a cross-sectional view taken along line x-x 'in FIG.
5 is a perspective view showing the main structure of a laminated core manufacturing apparatus according to the first embodiment of the present invention.
6 is a partial cross-sectional view of a mold apparatus cut along x-x 'in Fig.
7 is a perspective view showing a main structure of a laminated core manufacturing apparatus according to a second embodiment of the present invention.
8 is a partial sectional view of the upper mold cut along the line x-x 'in FIG.
9 is a perspective view showing a main structure of a laminated core manufacturing apparatus according to a third embodiment of the present invention.
10 is a cross-sectional view taken along line x-x 'in FIG.
Hereinafter, an apparatus for manufacturing a laminated core according to an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a laminated core manufacturing apparatus according to the present invention, and FIG. 2 is a view showing a state in which an adhesive is applied to a core sheet according to an embodiment of the present invention.

Referring to FIG. 1, the apparatus for manufacturing a laminated core according to an embodiment of the present invention may be used in a press working method in which a continuous operation is performed on strips 1 sequentially moved.

The mold apparatus 10 is preferably a progressive mold apparatus and comprises an upper mold 11 and a lower mold 12. [ The upper mold 11 is disposed on the upper side of the lower mold 12, and moves in the direction of elevation v toward the lower mold. The movement of the upper mold 11 is performed as the upper mold 11 is mounted on the press and the press is driven. At the upper portion of the lower mold 12, the strips are sequentially shifted by one pitch along the proceeding direction f.

The upper mold 11 includes piercing punches 21, 22, 23 and 24 and blanking punches 25 for punching the strip 1, a punch plate 20 for mounting the punches, And a punch holder 30 for supporting the punch holder 30 from above. Although FIG. 1 shows four piercing punches 21, 22, 23, and 24, the number and shape of the piercing punches may vary depending on the shape and size of the core to be manufactured Of course.

The upper mold 11 is provided with a punch backing plate 35 for supporting the punch between the punch holder 30 and the punch plate 20 and a punch backing plate 35 for guiding the punch to move to the correct position, 1 may be provided in the stripper plate 40.

The lower mold 12 includes a die holder 50 mounted on the press and holding the entire center of the lower mold 12, a die plate 60 seated on the upper side of the die holder 50, And a die backing plate 55 positioned between the die plate 60 and the die plate 60 to support the pressure applied to the die plate 60.

A cylindrical blanking die 70 having a hollow formed therein at a position corresponding to the blanking punch 25 is mounted in the lower mold 12. [ The blanking die 70 includes a lamination portion 71 which is punched by the blanking punch 25 and separated from the strip 1 by adhering and laminating the core sheet and a laminated core 2 laminated to a predetermined thickness, And a squeeze ring 72.

The adhesive applicator 100 may be mounted on the upper mold 11 and the lower mold 12 of the mold apparatus 10 according to the present invention and the adhesive applicator 100 may be mounted on the upper mold 11 A first adhesive applying unit 100a, a second adhesive applying unit 100d, and a second adhesive applying unit 100d, which are mounted on the lower mold 12, respectively.

The first adhesive applying apparatuses 100a, 100b, and 100c can be mounted at various positions in the upper mold 11. 1, the first adhesive application devices 100a, 100b and 100c may be located on the left side of the piercing punch 21 or between the piercing punch 24 and the blanking punch 25, 25). It is also possible that the first adhesive applicator teeth 100a, 100b and 100c are located between the piercing punches 21, 22, 23 and 24 in other cases. On the other hand, the second adhesive applying apparatus 100d can be mounted on the left side of the blanking die 70 at any position in the lower mold 12 based on FIG.

When the first adhesive applying device 100b or 100c is positioned between the piercing punches 21, 22, 23 and 24 and the blanking punch 25 or inserted into the blanking punch 25, the piercing punch 24 And the first adhesive applying apparatuses 100b and 100c can be mounted. The air injection device 200 injects air into the punching punches 21, 22, 23, and 24 by applying the air to the application point before the first adhesive applying device 100 applies the adhesive to the upper surface of the strip 1, For removing foreign matter such as oil which may be deposited on the application point when the strip (1) is punched out by the adhesive layer (1).

The manufacturing process of the laminated core using the mold apparatus 10 according to the present invention is composed of a piercing process, a bonding process, a blanking process, and a laminating process.

In the piercing step, a basic shape such as a slot or a shaft hole is formed on the strip 1 excluding the core outer shape. At this time, the strip 1 is pierced by the piercing punches 21, 22, 23, and 24, which are mounted on the upper mold 11 and move up and down while being sequentially shifted pitch by pitch in the mold apparatus 10 The piercing process is performed.

In the bonding step, an adhesive is applied to the strip (1). The two-component type adhesive may be applied in which the adhesive is separated into a first liquid (4) and a second liquid (5) component, and the adhesive is mixed and used. Preferably, the adhesive is an epoxy adhesive, in which the first liquid 4 is the subject and the second liquid 5 can be the curing agent, while the first liquid 4 becomes the curing agent and the second liquid 5, Of course, this can be a topic.

2, the first liquid 4 is applied on the upper surface of the strip 1 by the first adhesive applying devices 100a, 100b and 100c, the second liquid 5 is applied on the upper surface of the strip 1, And can be applied to the lower surface of the strip 1 by the application device 100d. The application spot to which the first liquid 4 and the second liquid 5 are applied is positioned at the same point on the upper surface and the lower surface of the strip 1 on which the core sheet 3 is formed, And may be formed in plural.

The bonding process may be performed at a stage before the piercing process or at a stage before the blanking process after the piercing process, depending on the position of the adhesive applying device 100 described above. Further, in the case of applying the first liquid (4), it may be performed simultaneously with the blanking process.

In the blanking process, a blanking process is performed in which the core sheet is pulled out of the core to separate the core sheet from the strip 1. This blanking process is performed by moving the blanking punch 25 mounted on the upper mold 11 of the mold apparatus 10 in the vertical direction and punching the strip 1.

The core sheet 3 produced according to the blanking process finally forms a laminated core 2 through a lamination process. Specifically, the core sheet 3 separated from the strip 1 is inserted into the lamination die 71 provided on the blanking die 70, and is wound on the core sheet group 6 stacked in the lamination die 71 . At this time, the second liquid 5 on the underside of the core sheet 3 and the first liquid 4 on the upper surface of the core sheet group 6 are mixed and cured to be bonded. The laminated core 2, which is laminated with the thickness set in this manner, is sequentially pushed into the squeeze ring 72 and discharged to the outside.

FIG. 3 is a perspective view showing a schematic structure of an adhesive applying apparatus according to the present invention, and FIG. 4 is a sectional view taken along line x-x 'in FIG.

3, an adhesive applying apparatus 100 according to the present invention includes an adhesive supply unit 101, an adhesive dispenser 101 for dispensing an adhesive supplied from the adhesive dispenser 101 to the upper and lower surfaces of the strip 1, And a cam driving part 103 for moving the adhesive dispensing part 120 up and down to control the execution and stopping of the adhesive application.

The adhesive supply part 101 is composed of a pressurizing device 110 for pressurizing the adhesive stored in each storage tank (not shown), that is, the first liquid 4 or the second liquid 5 by a known method such as compressed air , The pressurized adhesive is sent to the adhesive discharging portion 102 through the adhesive supply tube 111 at a supply speed set by the pressure. In this case, the pressurizing device 110 can be set to supply a predetermined amount of the adhesive to the adhesive discharging portion 102 when the punch is lowered and the strip 1 is hit through adjustment of the pressing time and intensity.

The adhesive dispensing portion 102 includes a discharge portion main body 120 for discharging the adhesive introduced through the adhesive supply tube 111 to the outside and a cam structure And a discharge part support pin 140 which is coupled to the discharge part lid 130 and facilitates the ascending and descending of the adhesive discharge part 102.

The cam driving unit 103 includes a cam member 160 that moves back and forth in the horizontal direction h to vertically move the adhesive discharging unit 102 in the vertical direction and a cam member 160 that provides power to the cam member 160, And a driving device 170 for controlling the forward and backward movement. The driving device 170 may be a known actuator such as a fluid cylinder or a solenoid device.

On the other hand, the control box 180 electrically connected to the driving device 170 receives the counting information regarding the number of punching operations and controls the advancing / retreating movement of the cam member 160 to thereby produce a laminated core having a predetermined thickness have. At this time, the control box 180 may also control the pressurizing device 110 to interrupt the supply of the adhesive for a predetermined time.

For example, when a stacked core in which 50 core sheets are stacked is to be manufactured, the cam member (not shown) of the second adhesive applying unit 100d during the 1st, 51st and 101st punching punches under the control of the control box 180 160 can be moved forward and backward to lower the adhesive discharging portion 102 so that the second liquid 5 is not coated on the lower surface of the strip 1. [ At the same time, the cam member 160 of the first adhesive applying apparatuses 100a, 100b, 100c is advanced and retreated immediately before the 50th and 100th punches of the punch to lift the adhesive dispensing unit 102, It is possible to prevent the liquid 1 (4) from being applied. As a result, no adhesion is made between the 50th, 51st, 100th, and 101th core sheets 3, and a laminated core 2 having a desired thickness can be obtained.

Hereinafter, the detailed structure of the adhesive discharging portion 102 and the cam driving method according to the motion of the cam member 160 will be described in detail.

Referring to FIG. 4, the discharging portion main body 120 has a substantially cylindrical shape, and a flange portion 121 is formed at a lower portion of the discharging portion main body 120 along the circumference of the outer circumferential surface.

A through hole 122 extending from the upper part to the lower part is formed in the discharge part main body 120 and a discharge pin 150 is inserted into the through hole 122. The position of the through hole 122 may correspond to a point at which the first liquid 4 or the second liquid 5 is to be applied on the upper and lower surfaces of the strip 1 where the core sheet is formed, Of course. The reduced diameter portion 123 is provided at the end of the through hole 122 and the first step portion 124 and the second step portion 125 are formed at the upper and lower portions of the reduced diameter portion 123, respectively.

The guide groove 127 is formed in the lower part of the discharge part main body 120 so that one end of the adhesive supply tube 111 can be inserted into the discharge pipe 153 inside the discharge part main body 120 Provide a pathway. The guide groove 127 may be formed not only in the lower portion of the discharge unit main body 120 but also in the upper portion of the discharge unit lid 130. The lower portion of the discharge unit main body 120 Or may be formed together.

The ejection pin 150 has a nozzle 151 having a cylindrical shape and a third stepped portion 152 formed to have an enlarged outer diameter and a nozzle 151 coupled to a lower portion of the nozzle 151 and supported by the second stepped portion 125 A nozzle spring 155 having a ring shape and a nozzle spring 156 fitted to the outer periphery of the nozzle 151 and supported at both ends between the first step part 124 and the third step part 152 to perform an elastic action .

The ejection pin 150 protrudes from the upper surface of the ejection unit main body 120 by the adjustment of the nozzle spring 156 and the nozzle support 155. At this time, an instantaneous external pressure is applied to the protruded ejection pin 150 The ejection pin 150 is pushed into the nipping space 126 provided at the lower part according to the elastic action of the ground nozzle spring 156 and then returns to its original state.

That is, when the strip 1 is punched in accordance with the press driving, the discharge pin 150 and the strip 1 come into contact with each other in a state in which the nozzle spring 156 is retracted, thereby prolonging the contact time, And further prevents damage to the strip 1 and the discharge pin 150 due to the impact.

A hollow discharge pipe 153 is provided in the discharge pin 150. An adhesive supply tube 111 is inserted into the discharge pipe 153 and the adhesive supplied in accordance with the operation of the pressure device 110 is discharged to the outside through the discharge pipe 153.

Sparge prevention holes 154 are formed in the upper part of the discharge pin 150 in the circumferential direction at a distance from the discharge pipe 153. The diffusion preventive hole 154 prevents the adhesive discharged from the discharge pipe 153 from spreading beyond a certain range of the application point on the upper surface of the strip 1 and allows the adhesive to be evenly applied in the above- .

The discharge portion lid 130 is engaged with the lower portion of the discharge portion main body 120 to form the body of the adhesive discharge portion 102.

A first cam surface 131 is formed on a lower surface of the discharge section lid 130. The first cam surface 131 has a convex portion 131a and a concave portion 131b which are formed by continuously arranging the inclined plane and the plane. The first cam surface 131 forms a cam structure together with the second cam surface 161 formed on the upper surface of the cam member 160, which will be described later.

The discharge part support pin 140 is coupled to the discharge part lid 130 and the first end part 141 is formed at the lower part. A support spring 142 is inserted into the outer periphery of the discharge portion support pin 140 and both ends of the support spring 142 are supported by the first end portion 141 and the second end portion provided in the mold apparatus 10, While supporting the entirety of the portion 102, it helps the adhesive discharge portion 102 to rise or fall smoothly through the elastic action.

The cam member 160 has a plate-like shape and a second cam surface 161 formed on the upper surface thereof. The inclined plane and the plane are continuously arranged so that the second cam surface 161 corresponds to the first cam surface 131 to form the convex portion 161a and the concave portion 161b. At this time, it is preferable that the inclined surface has an inclination angle of less than a certain angle for smooth movement of the cam member 160.

The second cam surface 161 forms a cam structure with the first cam surface 131 as described above. That is, as the cam member 160 advances or retracts in the horizontal direction, the adhesive discharge portion 102 is vertically raised or lowered.

4, in the first cam state in which the convex portion 131a of the first cam face 131 and the convex portion 161a of the second cam face 161 are opposed to each other, the support spring 142 The adhesive discharge portion 102 is moved upward while being compressed. In this state, the cam member 161 moves back and forth in the horizontal direction h again so that the convex portion 131a and the concave portion 131b of the first cam face 131 are engaged with the concave portion 161b of the second cam face 161 And the convex portion 161a, the adhesive discharge portion 102 is lowered by the elastic force of the compressed support spring 142. In this case,

Accordingly, in the first cam state, the strip 1 and the ejection pin 150 can be brought into contact with each other so that the adhesive application can be performed, while in the second cam state, the distance between the strip 1 and the ejection pin 150 becomes So that the adhesive is not applied.

A guide hole 162 through which the discharge part support pin 140 passes is formed at the center of the cam member 160. The guide hole 162 guides the horizontal movement of the cam member 160 and restricts the movement distance of the cam member 160. The guide hole 162 can be shaped like a long hole. At this time, it is preferable that the length of the long hole is determined such that the cam rising or cam falling state is maintained when the cam member 160 is maximally advanced or retracted, and the moving distance is minimized.

The configuration of the adhesive application apparatus 100 may be applied to the first adhesive application apparatuses 100a, 100b, and 100c and the second adhesive application apparatus 100d in the same manner. However, the liquid supplied from each of the first and second adhesive applying units 100a, 100b, 100c and 100d is different from the first liquid 4 or the second liquid 5 constituting the two-part adhesive There is a difference in points. 3 and 4 show a state in which the embodiment of the present invention is applied to the second adhesive applying unit 100d. In the case of the first adhesive applying units 100a, 100b and 100c, You will understand.

FIG. 5 is a perspective view showing a main structure of a laminated core manufacturing apparatus according to a first embodiment of the present invention, and FIG. 6 is a partial cross-sectional view of a mold apparatus cut along a line x-x 'in FIG.

1 and 5, in the apparatus for producing a laminated core according to the first embodiment of the present invention, the first adhesive applying apparatus 100b includes an upper mold 11 between a piercing punch 24 and a blanking punch 25, And the second adhesive applying device 100d is mounted in the lower mold 12 between the blanking die 70 and the strip guide plate 80. [

Accordingly, in the first embodiment of the present invention, after the piercing process is completed, the first liquid 4 and the second liquid 5 are separated by the first and second adhesive applying units 100b and 100d, respectively, ) Is performed, and then a blanking process and a lamination process are performed.

An air injection device 200 is mounted between the first adhesive applying device 100b and the piercing punch 24 to perform surface treatment for removing foreign matter on the application point of the upper surface of the strip 1 prior to the bonding process The process can be carried out.

Referring to FIG. 6, the adhesive dispensing apparatuses 100b and 100d are mounted on the upper mold 11 and the lower mold 12, respectively.

A first adhesive applying device 100b for applying the first liquid 4 to the upper surface of the strip 1 is mounted on the upper mold 11. [

A bonding hole 21b is formed in the punch plate 20 and the punch backing plate 35. A discharge unit body to which the discharging unit main body 120b and the discharging unit cover 130b are coupled is inserted into the bonding hole 21b and a part of the discharging unit main body 120b protrudes below the punching plate 20. [ The flange portion 121b of the discharge portion main body 120b is seated and supported on the seating portion 22b provided at the end of the bonding hole 21b.

A cam member insertion space 31b is formed between the punch backing plate 35 and the punch holder 30 to allow the cam member 160 to be inserted and retracted.

The punch holder 30 is formed with a support hole 33b having a second end portion 32b and the discharge portion support pin 140b is inserted into the support hole 33b. At this time, both ends of the support spring 142b fitted to the outer periphery of the discharge part support pin 140b are supported by the first end 141b and the second end 32b, and have an elastic action.

Hereinafter, an operation process of the first adhesive applying apparatus 100b will be described.

5, the first adhesive applying unit 100b is lowered together with the upper mold 11. When the upper mold 11 is positioned at the lowest point, the first adhesive applying unit 100b is lowered together with the upper mold 11, The ejection pin 150b of the ejection port 100b comes into contact with the upper surface of the strip 1. [ At this time, the first liquid 4 supplied through the pressurizing device 110 is discharged from the discharge pipe 153b and applied to the upper surface of the strip 1. [

Thereafter, when the cam member 160b moves back and forth to the second cam state, the support spring 142b in the compressed state pulls up the entire adhesive discharge portion 102b by using the accumulated elastic force. Thus, at the lowest point of the upper mold 11, the discharge pin 150b of the first adhesive applying apparatus 100b and the strip 1 are spaced apart from each other by a predetermined distance, so that the first liquid 4 is not applied.

The lower die 12 is provided with a second adhesive applying device 100d for applying the second liquid 5 on the lower surface of the strip 1. [

A lower bonding hole 61 is formed in the die plate 60 and the die backing plate 65. The ejection unit main body 120d and the ejection unit main body 120d are coupled to the bonding hole 61 so that the ejection unit main body 120d and the ejection port main body 120d face each other.

A cam member insertion space 51 is formed between the die backing plate 65 and the die holder 50 to allow the cam member 160d to be inserted and retracted.

The die holder 50 is formed with a support hole 53 having a second end portion 52 and the discharge portion support pin 140d is inserted into the support hole 53. [ At this time, both ends of the support spring 142d fitted to the outer periphery of the discharge part support pin 140d are supported by the first end 141d and the second end 52 to have an elastic action.

Hereinafter, an operation process of the second adhesive applying apparatus 100d will be described.

In the first cam state shown in Fig. 5, the discharge pin 150d of the second adhesive applying device 100d is in contact with the lower surface of the strip 1. [ Thus, the second liquid 5 supplied through the pressurizing device 100 is applied to the lower surface of the strip 1.

Thereafter, when the cam member 160d moves back and forth to the second cam state, the support spring 142d in a compressed state pulls down the entire adhesive discharge portion 102d by using the accumulated elastic force. Thereby, the ejection pin 150d of the second adhesive applying unit 100d and the strip 1 are spaced apart from each other by a predetermined distance, and the second liquid 5 is not applied.

FIG. 7 is a perspective view showing a main structure of a laminated core manufacturing apparatus according to a second embodiment of the present invention, and FIG. 8 is a partial sectional view of an upper mold cut along the line x-x 'in FIG.

1 and 7, in the apparatus for producing a laminated core according to the second embodiment of the present invention, the first adhesive applying apparatus 100c is partially inserted into the blanking punch 25 and mounted in the upper mold 11 , The second adhesive applying device 100d is mounted in the lower mold 12 between the blanking die 70 and the strip guide plate 80. [

Accordingly, in the bonding process according to the second embodiment of the present invention, the application of the first liquid 4 is performed simultaneously with the blanking process by the first adhesive applying device 100c, and the application of the second liquid 5 Is performed by the second adhesive applying device 100d in the stage before the blanking process.

An air jet device 200 is mounted between the first adhesive applying device 100c and the piercing punch 24 so that the foreign matter that is stuck on the application point of the upper surface of the strip 1 prior to the application of the first liquid 4 A surface treatment process can be performed.

In the second embodiment of the present invention, the second adhesive applying device 100d is mounted on the lower mold 12, and the operation and process of the second adhesive applying device 100d are the same as those in the first embodiment, The first adhesive applying apparatus 100c will be described with reference to FIGS.

Referring to FIG. 8, a first adhesive applying apparatus 100c is mounted on the upper mold 11. As shown in FIG.

The blanking punch 25 is fixed to the punch plate 20 and is supported by the punch backing plate 35 when the strip 10 is punched. A hollow portion 26 is formed in the blanking punch 25 and a discharge portion main body 120c is inserted into the hollow portion 26. [ A seat portion 27 on which the flange portion 121c of the discharge portion main body 120c is seated is provided on the upper portion of the hollow portion 26. [

A bonding hole 36c is formed in the punch backing plate 35 so that the discharge section lid 130c can be positioned in connection with the discharge section main body 120c and the punch backing plate 35 is provided between the punch backing plate 35 and the punch holder 30 The cam member insertion space 31c is formed so that the cam member 160c is inserted and the forward and backward movement is enabled.

The punch holder 30 is formed with a support hole 33c having a second end portion 32c and the discharge portion support pin 140c is inserted into the support hole 33c. At this time, both ends of the support spring 142c fitted to the outside of the discharge portion support pin 140c are supported by the first end portion 141c and the second end portion 32c, and have an elastic action.

Hereinafter, an operation process of the first adhesive applying apparatus 100c will be described.

The first adhesive applying device 100c is lowered together with the upper mold 11 according to the press driving in the first cam state shown in Fig. 8, and when the blanking punch 25 touches the strip, Is brought into contact with the upper surface of the strip (1). At this time, the first liquid 4 supplied through the pressurizing device 110 is discharged from the discharge pipe 153c and applied to the upper surface of the strip 1. [

Thereafter, when the cam member 160c moves back and forth to the second cam state, the support spring 142c in a compressed state pulls up the entire adhesive discharge portion 102c by using the accumulated elastic force. As a result, the discharge pin 150c and the strip 1 are spaced apart from each other by a predetermined distance while the blanking punch 25 strikes the strip 1, so that the first liquid 4 is not applied.

FIG. 9 is a perspective view showing a main structure of a laminated core manufacturing apparatus according to a third embodiment of the present invention, and FIG. 10 is a sectional view taken along line x-x 'in FIG.

Referring to FIGS. 1 and 9, in the apparatus for manufacturing a laminated core according to the third embodiment of the present invention, the first adhesive applying apparatus 100a includes an upper mold 100a accommodated in a separate housing 300, And the second adhesive applying device 100d is mounted in the lower mold 12 between the blanking die 70 and the strip guide plate 80. The second adhesive applying device 100d is mounted on the lower mold 12 between the blanking die 70 and the strip guide plate 80,

Accordingly, in the bonding process according to the third embodiment of the present invention, the application of the first liquid 4 is carried out by the first adhesive applying device 100c at a stage before the piercing step, The application is carried out by the second adhesive applying device 100d at a stage before the blanking process.

As described above, in the third embodiment of the present invention, since the application of the first liquid 4 is performed before the piercing process, the surface treatment process by the separate air injection device 200 can be omitted. However, in order to maintain the applied state of the applied first liquid 4 thereafter in the piercing and blanking process, it is necessary to provide an escape groove at the bottom surface of the stripper plate 40 at each pitch corresponding to the application point.

In the third embodiment of the present invention, the second adhesive applying device 100d is mounted on the lower mold 12, and the operation and the operation are the same as in the first embodiment. 10, the first adhesive applying apparatus 100a will be described.

Referring to FIG. 10, a first adhesive applying apparatus 100a is shown housed in a housing 300. FIG.

The housing 300 includes a discharge port pocket 310 and a bracket 320. The discharging portion pocket 310 is formed with a bonding hole 311 to insert the discharging portion main body 120a and a seating portion 312 is formed on the upper portion of the discharging portion pocket 310 along the inner circumferential surface, The flange portion 121a of the discharge portion main body 120a is seated.

The bracket 320 is coupled to the upper portion of the discharge portion pocket 310. A cam member insertion space 321 for driving the cam is accommodated in the lower portion of the bracket 320 by receiving the discharge portion receiving portion 130a and the cam member 140a do. A support hole 323 through which the discharge portion support pin 140a is inserted is formed in the upper portion of the bracket 320. At this time, both ends of the support spring 142a fitted to the outer periphery of the discharge part support pin 140a are supported by the first end 141a and the upper part of the support hole 323, A coupling portion 322 for coupling with the upper mold 11 and the driving device 170 is formed on the side surface of the bracket 320.

The housing 300 accommodating the first adhesive applying apparatus 100a is attached to one side of the upper mold 11 into which the strip 1 is introduced so that the first adhesive road apparatus 100a is mounted on one side of the upper mold 11, In the same manner as the first adhesive applying unit 100b.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that the foregoing description is merely illustrative of the present invention and that the scope of the present invention is defined by the claims set forth below and that all changes and modifications that come within the scope of the present invention are included in the scope of the present invention.

1: Strip 2: Laminated core
3: core sheet 4: hardener
5: Main body 10: Molding device
11: upper mold 12: lower mold
20: punch plates 21, 22, 23, 24: piercing punches
25: blanking punch 26: hollow part
30: punch holder 35: punch backing plate
40: Stripper
41b, 41c, 61, 311: bonding holes
42b, 27, 312:
43b, 43c, 63, 321: a cam member insertion space
44b, 44c, 64, 323: support holes
45b, 45c, 65: second end
50: die holder 55: die backing plate
60: Die plate 70: Blanking die
71 laminated portion 72: squeeze ring
80: strip guide plate 100: adhesive application device
100a, 100b, 100c: a first adhesive application device
100d: second adhesive application device
101: Adhesive supply part 102: Adhesive discharge part
103: a cam driving part 110: a pressing device
111: adhesive supply tube 120: discharge unit main body
121: flange portion 122: through hole
123: an axial neck portion 124: a first step portion
125: second step 126: jungle space
127: Guide groove 130: Discharge section cover
131: first cam face 140: discharge part support pin
141: first end 142: support spring
150: Discharge pin 151: Nozzle
152: Third step 153: Discharge tube
154: spread prevention groove 155: nozzle base
156: nozzle spring 160: cam member
161: second cam face 162: guide hole
170: Driving device 180: Control box
200: air jet device 300: housing
310: Discharge part pocket 320: Bracket

Claims (9)

A mold apparatus for forming a core sheet and laminating the core sheet by punching a strip which is composed of an upper mold and a lower mold and is sequentially conveyed from an upper portion of a lower mold by a piercing punch and a blanking punch mounted on an upper mold,
A first adhesive applying device and a second adhesive applying device mounted on the upper mold and the lower mold to apply an adhesive to upper and lower surfaces of the strip while the punches strike the strip,
Wherein the first and second adhesive application devices comprise:
An adhesive discharge unit for discharging an adhesive to at least one or more application points on a top surface or a bottom surface of the strip on which the core sheet is formed;
An adhesive supply unit for supplying the stored adhesive to the adhesive discharge unit by applying a predetermined pressure; And
And a cam driving part for moving the adhesive discharge part up and down,
Wherein the adhesive dispensing portion includes a discharge portion main body and a discharge portion lid,
A through hole corresponding to the application point is provided in the discharge part main body, a discharge pin is inserted into the through hole,
Wherein the discharge pin includes a nozzle protruding from one side of the through hole,
Wherein the cam driving unit is composed of a cam member that moves in the horizontal direction to move the adhesive discharging unit up and down in the vertical direction and a driving device that drives the cam member,
Wherein the first surface of the cam member includes a convex portion and a concave portion formed by successively arranging an inclined surface and a plane in correspondence with a second surface of the discharge portion lid,
Further comprising a discharge portion support pin coupled to the discharge portion cover, wherein the discharge portion support pin passes through a guide hole having an elongated shape formed in a central portion of the cam member. The method according to claim 1,
Wherein the adhesive is a two-component adhesive in which the first liquid and the second liquid are mixed and cured, and the first liquid and the second liquid are respectively applied to the first and second adhesive applying apparatuses. 3. The method of claim 2,
Wherein the first adhesive applying device is mounted between the piercing punch and the blanking punch or is partially inserted into the inner space of the blanking punch. 3. The method of claim 2,
Wherein the first adhesive applying device is mounted on one side of the upper mold to which the strip is supplied. The method of claim 3,
Further comprising an air spraying device for spraying air between the piercing punch and the first adhesive applying device to remove foreign matter on the application point. delete The method according to claim 1,
Wherein the discharge pin has a spread preventing hole formed in a circumferential direction at a distance from the discharge tube through which the adhesive is discharged. delete The method according to claim 1,
Wherein the driving device counts the number of punching steps of the punch and advances and retreats the cam member so that adhesive application is not performed a predetermined number of times.

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