KR20190061205A - Welding Jig for Thickness adjuster - Google Patents

Abstract

The present invention relates to a welding jig apparatus for adjusting a shim, and more specifically, relates to a welding jig apparatus for adjusting the shim, comprising: the shim (51) which includes a thickness control unit (52) which is able to adjust the thickness; a bushing (53) fastened with the shim to keep a certain height; and fastening bolts (54) which respectively fasten the shim or the bushing with an upper end unit of a main frame or a lower end unit of a clamping unit (34) of a clamping unit (30). According to the present invention, a location block (50) comprises: a shim (51) including a thickness control unit (52) which is able to adjust a thickness; a bushing (53) fastened with the shim to keep a certain height; and fastening bolts (54) which respectively fasten the shim or the bushing with an upper end unit of a main frame or a the lower end unit (34) of a clamping unit (30). The present invention is able to easily adjust a height with a simple structure using the location block composed of the shim and the bushing, to suppress a pin (55) and location block (50), which expands by a forced convection method with the pin (55), and to evenly mass-produce high-quality objects for welding.

Description

[0001] Welding Jig for Thickness adjuster [0002]

The present invention relates to a welding jig for core adjustment, and more particularly to a welding jig for a core-adjusting welding jig, which comprises: a core (51) including a thickness adjusting portion (52) adjustable in thickness; A bushing 53 coupled to the shim and maintaining a constant height; And a fastening bolt (54) for fastening the shim to the upper end of the main frame to the lower end of the clamping part (34) of the clamping unit (30).

Typically, welding is used as a method for connecting a plurality of members such as automotive panels. Automotive panels use spot welding, laser welding and CO2 welding.

The welding is mainly used for joining thin materials, and it is widely used in automobile manufacturing processes because it has less strain and shrinkage of the base material, enables fine welding, has a very high welding speed, and has favorable conditions for automation.

When welding an automobile panel, a large number of molded sub-members are often welded three-dimensionally. Therefore, a dedicated welding jig is often used in order to position the member during welding and to cope with deformation when it is dissolved by welding and deformation after welding.

The driving process of the welding jig will be described. First, the members of the object to be welded are loaded. Then, the clamping unit of the welding jig is clamped so that the members can not move. The clamping unit is operated using a pneumatic pressure or manually. After the clamping, the welding proceeds, and after welding, after unclamping the dedicated jig, the object to be welded is transferred to the next process.

Conventionally, a location block having the same height as the object to be welded is used, or a location block considering the forming height is used. However, nowadays, there is a case where a step is generated according to the thickness, It occurs frequently. Therefore, when welding a member having different thicknesses or a contact state or a curved shape, the deformation degree of the object to be welded after welding varies depending on the welding area, the welding speed and the position of the member.

As described above, there is a need for a technique that is simple in structure with respect to welding deformation and is easy to change the height of a location block while reducing manufacturing cost.

Further, a technique for preventing thermal expansion of the location block due to heat conduction due to welding heat is needed.

1. KR 10-1189060, 'Jig device for laser welding', Registration date: October 10, 2. KR 20-0461575, 'Jig device for side outer laser welding of vehicles', registered on July 16, 2012. 3. KR 10-1700655, 'Automatic welding machine for welding mask frame using welding robot', Registration date: 2017.01.23. 4. KR 10-0837685, 'Clamping device for automobile arm welding jig', Registered Date: 2008.06.05.

The present invention has been made to solve the above problems and it is an object of the present invention to provide a welding apparatus and a welding method for welding different kinds of materials or welding different members having different thicknesses according to the welding area, It is an object of the present invention to disclose a welding jig for carding regulation that is simple in structure and low in manufacturing cost and capable of easily adjusting the height of a location block to correspond to the welding deformation degree.

It is still another object of the present invention to disclose a welding jig for carding adjustment for preventing thermal expansion of a location block due to welding heat.

In order to accomplish the above object, the present invention provides a welding apparatus for welding a welding object, comprising a base 20 disposed at one side of the welding apparatus, At least one clamping unit (30) fastened to the base and fixing a sub-member located at an upper end of the main frame, and a clamping unit And a location block 50 fastened to the lower end of the clamping unit 34 of the clamping unit 30 to fix the sub-member, so as to prevent the welding object from being deformed due to the high heat generated during the welding process, In the apparatus, the location block (50) comprises: a shim (51) including a thickness adjusting section (52) adjustable in thickness; A bushing 53 coupled to the shim and maintaining a constant height; And a fastening bolt (54) for fastening the shim to the upper end of the main frame to the lower end of the clamping part (34) of the clamping unit (30), respectively .

The present invention further includes one or more fins (55) on the outer circumferences of the shims (51) to bushings (53) of the location block (50) to suppress the temperature rise of the location block A welding jig device is disclosed.

The present invention is characterized in that it is attached to one side of the main frame 21 to supply cold air to the shim 51 to the bushing 53 of the location block 50, A valve; And an air nozzle for supplying the air supplied from the air control valve to the location block (50).

The present invention has the following effects as the above-mentioned solution.

First, height adjustment of the location block can be easily changed with a simple structure.

Second, it is easy to adjust the height of the location block, so it can be easily applied to welding of different materials or welding deformation of members having different thicknesses.

Thirdly, it has the advantage that the location block 50 can be uniformly mass-produced by suppressing the location block 50 in which the fin 55 and the pin 55 are expanded and the heat conduction path is expanded in the forced convection manner.

1 is an embodiment of an object 10 to be welded.
Fig. 2 is a perspective view of a right side (A) and a left side perspective view (B) of a preferred embodiment of the present invention.
Figure 3 is a front view (A) and side view (B)
4 is a perspective view (A), a structural view (B), a front view (C) and a perspective view (D) of a location block.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, the size, color, and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings. In the drawings, the thickness is enlarged to clearly show various parts and regions. In the drawings, for the sake of convenience, the thicknesses of some portions and regions are exaggerated.

When welding a member having a different thickness, the degree of deformation of the object to be welded after welding varies depending on the welding area, the welding speed and the position of the member.

DISCLOSURE OF THE INVENTION It is an object of the present invention to solve the above problems and provide a welding jig for heart-controlling which can easily adjust the height of a location block while being simple in structure and low in manufacturing cost, SUMMARY OF THE INVENTION

1 shows an embodiment of the object 10 to be welded.

When the automobile panel is welded, a plurality of molded sub-members are aligned with the upper end of the location block 50 fastened to the upper end of the main frame 21. [ In order to align the positions of the sub-members and ensure lateral centering, it is preferable to include at least one fixture (11) to pin.

Then, before welding, the clamping unit 30 is pressed to securely fix the position of the sub-member.

Thereafter, the welding process is carried out, and the spot welding and the CO2 welding are performed concurrently, and the welding is performed in the predetermined order to the inside and outside. The degree of deformation of the welding object 10 after the welding process and the welding process varies. In order to prevent this, it is preferable that the location block contacting the welding object 10 has various thicknesses.

The welding deformation varies depending on the welding time and the welding process, and reverse deformation may occur depending on the welding conditions. Therefore, it is desirable to have a structure capable of easily changing the height of the location block.

Fig. 2 is a perspective view (A) and a left perspective view (B) of a welding jig according to a preferred embodiment of the present invention, and Fig. 3 is a front view (A) and a side view (B) of the welding jig.

In the process of welding a plurality of sub-members and welding them using a welding apparatus, a base 20 is disposed on one side of the welding apparatus. The base 20 is fixed to the base, A clamping unit 30 for clamping the subframe at the upper end of the main frame and a clamping unit 30 for clamping the upper end of the mainframe to the clamping unit 30, And a location block (50) which is fastened to a lower end of the lower portion (34) and fixes the sub-member, wherein the location block (50) (50) comprises: a padding (51) including a thickness adjusting portion (52) adjustable in thickness; A bushing 53 coupled to the shim and maintaining a constant height; And a fastening bolt (54) for fastening the shim to the upper end of the main frame to the lower end of the clamping unit (34) of the clamping unit (30).

As shown in FIGS. 2 to 3, the base 20 is desired to be fixed to the ground, and in some cases, it may be fixed to a frame in which a horizontal state is maintained.

The base 20 is preferably located at one side of the welding apparatus.

The main frame 21 is fastened to the upper end of the base 21 and has a support function for supporting a sub-member that maintains a predetermined height.

The upper end of the main frame 21 is preferably fastened to one or more location blocks 50, and the location block 50 supports the sub-members.

 The clamping unit 30 is fastened to the upper end of the base 20 and has a function of firmly fixing the sub-member located at the upper end of the main frame.

In FIGS. 2 to 3, the clamping unit 30 is shown with the members 30a and 30b in an open state and a closed state, respectively. When a plurality of sub-members are inserted, the clamping unit fixes the member, and after the welding, the clamping unit is opened to take out the object to be welded.

The clamping unit (30) includes a clamping support (35) fastened to the base (20) and supporting the clamping unit (30); A cylinder 31 driven in accordance with a control signal; A rod 32 coupled to the cylinder to reciprocate vertically; A link (33) connected to the rod (32) and moving the clamping part (34); And a clamping part 34 having one or more location blocks at the lower end thereof, and a clamping part 34 joined to the link 33 in a whitish manner to press the sub member.

It is preferable that the clamping support 35 is joined to the one side of the link 33 through the cylinder 31 by a white paper.

When the welding object 10 is completed by welding the sub-member, the welding object 10 must be taken out. For this purpose, it is preferable to provide a vertical lift 40 on one side of the main frame to easily carry out the welding object.

The vertical lift 40 allows the welding object 10 to be vertically raised when the clamping unit 30 is opened after the welding so that it can be easily taken out from the welding jig.

Fig. 4 is a perspective view (A), a structure diagram (B), a front view of a shim and a deformed perspective view (D) of a location block of the location block.

The location block 50 is preferably fastened to the upper end of the main frame 21 or to the lower end of the clamping portion 34 and has a support function to firmly support or support the sub-member and the object to be welded.

The location block 50 includes: a padding 51 including a thickness adjusting portion 52 adjustable in thickness; A bushing 53 coupled to the shim and maintaining a constant height; And a fastening bolt (54) for fastening the shim to the upper end of the main frame to the lower end of the clamping unit (34) of the clamping unit (30).

The shim (51) includes a thickness adjusting part (52) adjustable in thickness. The thickness adjusting portion is a structure for changing the thickness to another having different thickness adjusting portions different from each other in thickness.

The location block may be formed by combining the bushing 53 and the shim 51 to grasp the workpiece. Preferably, the location block corresponds to the welding deformation by fastening the shim 51 and the bushing 53 having various heights.

That is, when reverse deformation is required before welding, the location block may be formed only by the bushing 53 with the shim 51 removed. In the case where the welding deformation greatly occurs, the location with the thick shim 51 The block 50 may be formed.

The fastening bolt 54 may be fastened only to the bushing 53 as occasion demands.

The positions of the bushing 53 and the shim 51 may be changed and the bushing 53 and the shim 51 may be extended by a one-touch fastening method comprising a stopping jaw and a concave groove, .

It is another object of the present invention to disclose a location block cardiac arresting apparatus for preventing heat transfer of a location block due to welding heat and thermal expansion.

In order to achieve the above object, as shown in FIG. 4D, the location block 50 further includes one or more fins 55 on the outer circumferential surface of the padding 51 to the bushing 53, Thereby suppressing the rise.

The structure of the fin (55) suppresses the thermal expansion due to the heat conduction of the location block (50) to mass-produce welding objects of the same quality.

The shape of the fin (55) is advantageous for forced convection because the spiral structure is more linear than the shape. The linear structure is that the pin itself functions as a partition, but the helical structure is a rotating structure, which can supply air to the entire pin when forced convection.

The structure of the pin 55 may be a structure that dissipates heat in a natural convection manner, or a forced convection method may be used in a more aggressive manner.

In order to use the forced convection mode, air supplied through an external blower may be used.

Therefore, in the present invention, in order to forcibly supply cold air to the padding 51 to the bushing 53 of the location block 50, it is attached to one side of the main frame 21, An air control valve; And an air nozzle for supplying the air supplied from the air control valve to the location block (50).

As described above, if the thermal expansion of the location block 50 is suppressed by the pin 55 to the pin 55 and the forced convection mode, it is possible to homogeneously mass-produce a good quality welding object.

10: object to be welded, 11: fixture, 15: welded part,
20: base, 21: main frame,
30a: Clamping unit fixed state, 30b: Clamping unit opened state,
31: cylinder, 32: rod, 33: link,
34: clamping part, 35: clamping support, 40: vertical lift,
50: Location block, 51: Syim, 52: Thickness adjusting section,
53: bushing, 54: fastening bolt, 55: pin,

Claims (3)

A base 20 disposed at one side of the welding apparatus in a process of welding a plurality of sub-members by welding and welding by a welding apparatus, and a base 20, which is fastened to the base, A main frame 21, at least one clamping unit 30 fastened to the base and fixing a sub member located at an upper end of the main frame, and a clamping unit 34 And a position block 50 fixed to the lower end of the subassembly to fix the subassembly, thereby suppressing the welding object from being deformed due to the high heat generated in the welding process,
The location block (50)
A shim (51) including a thickness adjusting part (52) adjustable in thickness;
A bushing 53 coupled to the shim and maintaining a constant height;
And a fastening bolt (54) for fastening the shim to the upper end of the main frame to the lower end of the clamping part (34) of the clamping unit (30).
The method of claim 1, wherein
Wherein one or more fins (55) are further provided on the outer circumferences of the shims (51) to bushings (53) of the location block (50) to suppress the temperature rise of the location block by a heat radiation effect.
The method of claim 1, wherein
In order to supply cold air to the shim 51 to the bushing 53 of the location block 50,
An air control valve attached to one side of the main frame to control air blown from the outside;
And an air nozzle for supplying the air supplied from the air control valve to the location block (50).

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