KR20190009989A - Connerting apparatus of different kinds of sheet and method of the same - Google Patents

Abstract

The present invention relates to a bonding method of heterogeneous plates, and specifically, to a bonding apparatus and a bonding method of the heterogeneous plates, which can bond the heterogeneous plates by filling a welding rod in a through hole formed in each of the heterogeneous plates. To achieve this, according to an embodiment of the present invention, the bonding apparatus of the heterogeneous plates, which bonds two sheets of the heterogeneous plates that each has a through hole, includes: an upper punch having a supply hole which is penetrated into an inner central portion thereof, the welding rod which is inserted into the supply hole, and a cavity which is formed in the circumference of the supply hole on a front cross-section; a lower die having a cavity which is formed in a front cross-section thereof corresponding to the front cross-section of the upper punch, and disposed oppositely to the upper punch; a heating cartridge formed in each front end portion of the upper punch and the lower die to heat the welding rod so that the welding rod supplied to each of the cavities is melted to be filled in each of the cavities; and a cutting coil formed along an inner circumferential surface of a front end portion of the supply hole of the upper punch, and heating the welding rod at a high temperature to cut the welding rod.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining apparatus and a joining method of a joining plate,

The present invention relates to a method of joining a dissimilar plate material, and more particularly, to a joining apparatus and joining method of a dissimilar plate material capable of joining a dissimilar plate material by filling a through hole formed in each of the dissimilar plate materials with a welding rod.

[0002] In recent years, as a vehicle body has been made lighter and lighter, it has become increasingly sophisticated to use a composite material plate such as a steel plate such as ultra high tensile steel, a non-ferrous metal plate such as aluminum or magnesium or the like as well as a carbon fiber reinforced plastic (CFRP: Carbon Fiber Reinforced Plastics) There have been frequent applications.

Since these composite materials have excellent strength, elastic modulus, light weight, and stability, they are widely regarded as one of the main materials in the aviation and automobile fields requiring high performance. If the economic conditions are solved, The production volume of the material is expected to increase dramatically.

In particular, composite materials in the automotive industry are mainly made by impregnating plastic materials such as epoxy or plastic with fiber materials. For example, CFRP is a state-of-the-art composite material that can be manufactured by making carbon fiber in a winding or fabric shape, then impregnating it in resin streams and curing, and is attracting attention as a lightweight material with high strength and high elasticity.

When these composite materials are bonded to materials of different materials, they are chemically or mechanically bonded using adhesives or hardware.

However, the use of a curing agent at room temperature for bonding different sheet materials increases the probability of a problem in the process due to a long curing time, and a method for maintaining adhesion until the initial curing of the adhesive is needed. In addition, when mechanically joining dissimilar materials, there is a high possibility of corrosion between the hardware and the composite material, and cracking occurs during the joining, resulting in local brittleness.

The matters described in the background section are intended to enhance the understanding of the background of the invention and may include matters not previously known to those skilled in the art.

An embodiment of the present invention provides a bonding apparatus and a bonding method of a dissimilar plate which can bond a dissimilar plate using an upper punch and a lower die.

The embodiments of the present invention provide a joining apparatus and joining method of a dissimilar plate material capable of joining a dissimilar plate material by filling a through hole in each of the dissimilar plate materials with a welding rod.

According to an embodiment of the present invention, there is provided a bonding apparatus for joining two dissimilar plate materials having through holes, wherein a welding rod is inserted into a supply hole penetrating the center of the inner plate, and a cavity is formed around the supply hole on the end face Upper punch; A lower die disposed opposite to the upper punch, wherein a cavity is formed in a front end surface corresponding to a front end surface of the upper punch; A heating cartridge configured to heat the electrode so that the electrodes supplied to the respective cavities are melted and filled in the upper punch and the lower die; And a cutting coil formed along the inner peripheral surface of the distal end of the supply hole of the upper punch and cutting the electrode by high temperature heating.

In addition, a plurality of the heating cartridges may be inserted into the leading end portions of the upper punch and the lower die, respectively.

In addition, the cutting coils may be formed in a case provided in the inner circumferential surface of the feed hole distal end portion of the upper punch.

Further, the case may be formed in a ring shape.

In addition, the upper punch and the lower die may be formed with contact surfaces in which the circumferential surfaces of the cavities are in contact with the dissimilar plate.

In addition, the two sheets of dissimilar plates may be made of a composite material and a steel material.

In addition, the electrode may be made of a plastic material.

According to another embodiment of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: forming a through hole on two dissimilar plates of different materials; Placing the two sheets of dissimilar plates in a stacked state so that the through holes correspond to between the upper punch and the lower die; Lowering the upper punch to pressurize the two sheets of dissimilar plates; Inserting a welding rod inside the supply hole of the upper punch into the through holes on the two sheets of dissimilar plates with the two sheets of dissimilar plate pressed; Heating the welding rod inserted in the through hole by power control of the inner heating cartridge of each of the upper punch and the lower die to dissolve and fill the electrode in the cavity of each of the upper punch and the lower die; And a step of power-controlling the cut-off coil in the upper punch to cut one side of the electrode by high-temperature heating and cutting.

The embodiment of the present invention can bond the dissimilar plates using the upper punch and the lower die, thereby shortening the manufacturing time and improving the productivity of the product.

In addition, since the dissimilar plates can be bonded by welding electrodes to the through holes of each of the dissimilar plates, corrosion of the materials can be prevented and local brittleness due to cracks can be prevented.

In addition, effects obtainable or predicted by the embodiments of the present invention will be directly or implicitly disclosed in the detailed description of the embodiments of the present invention. That is, various effects to be predicted according to the embodiment of the present invention will be disclosed in the detailed description to be described later.

1 is a perspective view illustrating a bonding apparatus for a dissimilar plate according to an embodiment of the present invention.
2 is a cross-sectional view illustrating a dissimilar plate according to an embodiment of the present invention.
3 is a perspective view illustrating an upper punch of a bonding apparatus for a dissimilar plate according to an embodiment of the present invention.
4 is a perspective view illustrating a lower die of a bonding apparatus for a dissimilar plate according to an embodiment of the present invention.
5 is a view illustrating a heating cartridge of an upper punch according to an embodiment of the present invention.
6 is a perspective view and a cross-sectional view illustrating a case of an upper punch according to an embodiment of the present invention.
7 is a process diagram illustrating a method of bonding a dissimilar plate according to an embodiment of the present invention.
FIG. 8 is a cross-sectional view illustrating a dissimilar plate bonded through a method of bonding a dissimilar plate according to an embodiment of the present invention.

Hereinafter, the operation principle of the joining apparatus and joining method of a dissimilar plate according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings and description. It should be understood, however, that the drawings and the following detailed description are exemplary and explanatory of various embodiments for effectively illustrating the features of the present invention. Therefore, embodiments of the present invention should not be limited to the following drawings and descriptions.

Further, in the following description of the embodiments of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the gist of the present invention unnecessarily obscure. The terms used below are defined in consideration of the functions of the embodiments of the present invention, which may vary depending on the user, the intention or custom of the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

In order to efficiently explain the essential technical features of the present invention, the following embodiments will appropriately modify, integrate, or separate terms to be understood by those skilled in the art to which the present invention belongs , And the present invention is by no means thereby limited.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating a bonding apparatus for a dissimilar plate according to an embodiment of the present invention, FIG. 2 is a cross-sectional view illustrating a dissimilar plate according to an embodiment of the present invention, FIG. 4 is a perspective view illustrating a lower die of a bonding apparatus for bonding a dissimilar plate according to an embodiment of the present invention, and FIG. 5 is a perspective view showing an upper punch according to an embodiment of the present invention. FIG. 6 is a perspective view and a cross-sectional view illustrating a case of the upper punch according to an embodiment of the present invention. FIG.

Referring to FIG. 1, an apparatus for bonding a dissimilar plate according to an embodiment of the present invention includes an upper punch 100 and a lower die 200.

The upper punch 100 and the lower die 200 join the first plate 10 and the second plate 20 of different materials.

At this time, as shown in FIG. 2, the first plate 10 is formed with a first through hole 15 for joining with the second plate 20.

The first plate 10 is made of a composite material. This composite material is a high-tech composite material that is attracting attention as a high-strength, high-elasticity lightweight structure made of fiber (carbon fiber) as reinforcement, and has excellent characteristics as a lightweight structural material.

Composite materials are excellent in strength and elasticity, excellent in repetitive fatigue, and excellent in dimensional stability because of low coefficient of thermal expansion, and excellent in electrical conductivity, corrosion resistance and vibration damping performance.

In the composite material, a plurality of material layers impregnated with a resin such as an epoxy resin or the like is laminated on the carbon fiber material, and the resin may be made of a hardened structure.

For example, the composite material may be made of at least one of carbon fiber reinforced plastic (CFRP) and fiber reinforced plastic (FRP).

As shown in FIG. 2, the second plate 20 has a second through-hole 25 corresponding to the first through-hole 15 of the first plate 10.

The second plate 20 may be made of steel.

The upper punch 100 includes a supply hole 120, a welding rod 130, an upper cavity 140, an upper contact surface 145, an upper heating cartridge 150, and a case 160 as shown in FIG. 3 .

A supply hole 120 is formed in the upper punch 100. That is, the supply hole 120 is formed to penetrate the inner center of the upper punch 100.

A welding rod 130 is inserted into the supply hole 120 for joining the first plate 10 and the second plate 20. The electrode 130 may be made of a plastic material.

The upper cavity 140 is formed in the front end surface of the upper punch 100. That is, the upper cavity 140 may be formed along the periphery of the supply hole 120.

The upper contact surface 145 is in contact with the upper surface of the first plate 10. That is, the upper contact surface 145 is formed on the circumferential surface of the upper cavity 140 and contacts the upper surface of the first plate 10.

The upper heating cartridge 150 is configured at the tip of the upper punch 100. 5, a plurality of the upper heating cartridges 150 are inserted into the tip of the upper punch 100 to form a welding rod 130 inserted into the first through hole 15 and the second through hole 25, .

The case 160 is installed on the inner peripheral surface of the tip end of the supply hole 120 of the upper punch 100 as shown in FIG. 6 (a). Such a case 160 constitutes a plurality of cutting coils 170 as shown in Fig. 6 (b).

The cutting coils 170 are formed along the inner circumferential surface of the tip end of the supply hole 120 of the upper punch 100, and a plurality of cutting coils 170 may be formed inside the case 160. The cutting coil 170 cuts off the welding rod 130 by high-temperature heating.

The cutting coil 170 may be made of a hot wire coil.

The lower die 200 includes a lower cavity 240, a lower contact surface 245, and a lower heating cartridge 250, as shown in FIG.

The lower cavity 240 is formed in the front end surface of the lower die 200. That is, the lower cavity 240 may be formed at the center front end surface of the lower die 200.

The lower cavity 240 may be formed in a groove shape for fixing the electrode rod 130.

The lower contact surface 245 contacts the lower surface of the second plate 20. That is, the lower contact surface 245 is formed on the circumferential surface of the lower cavity 240 and contacts the lower surface of the second plate 20.

The lower heating cartridge 250 is configured at the tip of the lower die 200. 5, a plurality of lower heating cartridges 250 are inserted into the front end portion of the lower die 200 to form the first through holes 15 and the second through holes 25, ) Together with the upper heating cartridge 150.

Hereinafter, a method of joining a dissimilar plate according to an embodiment of the present invention will be described with reference to FIGS. 7 and 8. FIG.

FIG. 7 is a process diagram illustrating a method of bonding a dissimilar plate according to an embodiment of the present invention, and FIG. 8 is a cross-sectional view illustrating a dissimilar plate bonded through a method of bonding a dissimilar plate according to an embodiment of the present invention.

7, the first plate 10 and the second plate 20 are inserted between the upper punch 100 and the lower die 200 in step S710.

Specifically, the first plate member 10 and the second plate member 20 are provided. At this time, the first plate 10 may be made of a composite material, and the second plate 20 may be made of a steel material.

A first through hole 15 is formed in the first plate member 10 and a second through hole 25 is formed in the second plate member 20 in correspondence with the first through hole 15.

The first plate 10 and the second plate 20 are overlapped so that the first through hole 15 and the second through hole 25 correspond to each other. At this time, the adhesive 50 is applied between the first plate 10 and the second plate 20 as shown in Fig.

The first through holes 15 and the second through holes 25 correspond to the upper punch 100 and the lower die 200 in a state where the first plate 10 and the second plate 20 are overlapped with each other. And is placed on the die 200. At this time, the first plate 10 and the second plate 20 can be seated on the lower contact surface 245 of the lower die 200.

In step S720, the upper punch 100 is lowered to insert the welding rod 130 into the first through hole 15 and the second through hole 25.

In other words, the upper punch 100 is lowered so that the upper contact surface 145 of the upper punch 100 contacts the upper surface of the first plate 10. [

The welding electrode 130 inside the upper punch 100 is inserted into the first through hole 15 of the first plate 10 and the second through hole 15 of the first plate 10 in a state in which the first plate 10 and the second plate 20 are pressed, (25) of the base plate (20). At this time, the electrode 130 may be made of a plastic material.

In step S730, the welding rod 130 is heated through the upper heating cartridge 150 of the upper punch 100 and the lower heating cartridge 250 of the lower die 200.

Specifically, the upper heating cartridge 150 of the upper punch 100 and the lower heating cartridge 250 of the lower die 200 are power-controlled to be inserted into the first through holes 15 and the second through holes 25 Thereby heating the welded electrode 130.

The heating of the upper heating cartridge 150 and the lower heating cartridge 250 melts and fills the electrode rod 130 into the upper cavity 140 of the upper punch 100 and the lower cavity 240 of the lower die 200.

In step S740, the welding rod 130 is cut using the cutting coil 170 of the upper punch 100. [

That is, the cutting coil 170 inside the upper punch 100 is subjected to power supply control to heat one side of the welding rod 130 by high temperature heating. At this time, the cutting coil 170 can cut one side of the welding rod 130 corresponding to the periphery of the supply hole 120 in the upper punch 100 by high-temperature heating.

The first punch 100 and the second punch 100 are then moved upward relative to the lower die 200 to return to the original position and the first plate 10 and the second plate 20, Lt; / RTI >

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

10: First plate
15: First through hole
20: Second plate
25: second through hole
50: Adhesive
100: upper punch
120: Supply hole
130: Electrodes
140: upper cavity
150: Upper heating cartridge
200: Lower die
240: Lower cavity
250: Lower heating cartridge

Claims (13)

A joining apparatus for joining two different sheet materials having through holes,
An upper punch in which a welding rod is inserted into a supply hole penetrating the center of the inner portion and a cavity is formed around the supply hole on the end surface;
A lower die disposed opposite to the upper punch, wherein a cavity is formed in a front end surface corresponding to a front end surface of the upper punch;
A heating cartridge configured to heat the electrode so that the electrodes supplied to the respective cavities are melted and filled in the upper punch and the lower die; And
A cutting coil formed along an inner peripheral surface of a distal end of a supply hole of the upper punch and cutting the electrode by heating at a high temperature;
And a joining device for joining the dissimilar plates. The method according to claim 1,
The heating cartridge
Wherein a plurality of the punches are inserted into the distal end portions of the upper punch and the lower die, respectively. The method according to claim 1,
The cutting coil
Wherein a heat coil is formed inside a case provided on an inner circumferential surface of a feed hole distal end portion of the upper punch. The method of claim 3,
The case
Wherein the first and second plates are formed in a ring shape. The method according to claim 1,
The upper punch and the lower die
And a contact surface in which the peripheral surface of each cavity is in contact with the dissimilar plate is formed. The method according to claim 1,
The two sheets of dissimilar plates
Wherein the joining apparatus comprises a composite material and a steel material. The method according to claim 1,
The electrode
Wherein the joining apparatus is made of a plastic material. Forming a through hole on two dissimilar plates of different materials;
Placing the two sheets of dissimilar plates in a stacked state so that the through holes correspond to between the upper punch and the lower die;
Lowering the upper punch to pressurize the two sheets of dissimilar plates;
Inserting a welding rod inside the supply hole of the upper punch into the through holes on the two sheets of dissimilar plates with the two sheets of dissimilar plate pressed;
Heating the welding rod inserted in the through hole by power control of the inner heating cartridge of each of the upper punch and the lower die to dissolve and fill the electrode in the cavity of each of the upper punch and the lower die; And
Controlling power of a cut coil in the upper punch to cut one end of the electrode by high temperature heating;
And the second plate member. 9. The method of claim 8,
The step of placing and placing on the lower die
Further comprising the step of applying an adhesive agent between the two sheets of dissimilar plate material and overlapping them. 9. The method of claim 8,
The cutting step
And cutting one side of the electrode corresponding to the periphery of the feed hole in the upper punch by high-temperature heating. 9. The method of claim 8,
After the cutting step
Further comprising: moving the upper punch up to the lower die and returning the upper punch to its original position. 9. The method of claim 8,
The two sheets of dissimilar plates
A method of joining a dissimilar plate material comprising a composite material and a steel material. 9. The method of claim 8,
The electrode
Wherein the first and second plates are made of a plastic material.

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