KR101523907B1 - Jig for welding circle arc - Google Patents

Abstract

A circular arc welding jig capable of continuous arc welding at a constant incidence angle is introduced.
The arc welding jig may include a torch holder on which the welding torch is mounted, a guide rail for providing an arc-shaped travel path through which the torch holder is moved, and a body on which the guide rail is mounted, have.

Description

{JIG FOR WELDING CIRCLE ARC}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circular arc welding jig, and more particularly, to a circular arc welding jig capable of easily welding an arc with a certain incident angle.

In general, welding is performed mainly for the rigidity of the structure while forming a certain shape and shape of the hull, including a structure having an iron material. Further, considering the characteristic of the hull floating on the water, The importance of this can not be overlooked.

In this way, welding is a task that is carried out throughout various steel structures including the hull. LNG ships must design and dry tanks that can withstand extremely low temperatures, and most importantly, The highest level of welding technology for the whole industry is needed.

Particularly, when arc welding is performed on a ship, it is difficult to realize high quality welding and an experienced welding technique is required because the incidence angle and angle of the welding beam are changed according to the welding position of the arc welding operator.

When arc welding is divided into several times, there is a high possibility that cracks are generated due to the crater phenomenon at the last point of welding, and the continuity between weld beads is low, so that the structural strength may be weakened.

Patent Document: Domestic Patent Registration 10-0446357 (Registered on August 20, 2004)

Embodiments of the present invention are intended to provide an arc welding jig capable of continuous arc welding at a constant incidence angle.

According to an aspect of the present invention, there is provided a welding apparatus comprising: a torch holder to which a welding torch is mounted; A guide rail for providing a movement path of an arc shape in which the torch holder is moved; And a body that is positioned at the welding site where the arc welding is performed and on which the guide rail is mounted.

At this time, the cable holder may further include a cable holder bent to extend from the side of the body to receive the torch cable connected to the welding torch.

Further, the torch holder includes a holder piece for holding and fixing the welding torch; A moving piece slidably installed along a movement path of the guide rail; And an incident angle adjusting means for connecting the holder piece and the moving piece so that an incident angle of the welding torch is adjusted.

The incident angle adjusting means may include a first engaging portion extending below the moving piece and having a first engaging hole formed therein; A second engaging portion extending from one side of the holder and having a second engaging hole corresponding to the first engaging hole; And an adjustment member for coupling the first and second coupling holes to each other so that the incident angle of the welding torch is adjusted.

The holder piece may include a first holder piece and a second holder piece surrounding one outer surface and the other outer surface of the welding torch; A hinge pin for hinging one end of the first holder piece and the second holder piece; And a fastening member for fastening the first holder piece and the other end of the second holder piece to each other.

Further, the body may include an upper body on which the guide rails are mounted; A lower body having a welding hole formed at the center thereof; And a leg connecting the upper body and the lower body.

In addition, the legs may be inclinedly connected to the lower portion of the body in a radial manner, and a plurality of inclined grooves through which the lower ends of the legs are inserted may be formed on the upper surface of the lower body so as to be spaced apart from each other in the center direction of the lower body.

Embodiments of the present invention have the advantage that the welding torch can be easily adjusted at a constant incidence angle and the arc can be welded in a continuous rotational motion.

Further, the embodiments of the present invention have an advantage in that interference can be prevented by the cable during the arc welding, through the cable holder that holds the cable of the welding torch.

1 is a perspective view showing an arc welding jig according to a first embodiment of the present invention.
Fig. 2 is a cross-sectional view cut along the "AA"
3 is a perspective view illustrating a torch holder according to a first embodiment of the present invention.
4 is a perspective view showing an arc welding jig according to a second embodiment of the present invention.
Fig. 5 is a cross-sectional view cut along the "BB"
6 is a perspective view showing a state after the height adjustment of the arc welding jig according to the second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1st Example

The arc welding jig according to the first embodiment may be applied to an associated structure or facility that requires arc welding at a certain incident angle in addition to the SCA-W secondary barrier of the ship, and thus is not limited to the following description.

However, for ease of explanation, in the following embodiments including the first embodiment, description can be made based on the secondary barrier of the ship.

FIG. 1 is a perspective view showing an arc welding jig according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view cut along the line AA of FIG. 1, and FIG. 3 is a cross- FIG. 2 is a perspective view showing a torch holder according to an embodiment of the present invention. FIG.

1 to 3, the arc welding jig according to the embodiment of the present invention may include a torch holder 100, a guide rail 200, a body 300, and a cable holder 400 .

The torch holder 100 is a clamping structure in which a welding torch 10 for arc welding is mounted and is capable of moving in a circular arc along the guide rail 200 and adjusting the angle of incidence of the welding torch 10 Can be adjusted.

For example, the torch holder 100 includes a holder piece 110 to which the welding torch 10 is fixed, a moving piece 120 that is slidably coupled to the guide rail 200, a holder piece 110, And an incidence angle adjusting unit 130 for connecting the moving pieces 120. FIG.

The holder piece 110 is rotatably connected to the first holder piece 110a and the second holder piece 110b through a hinge pin 112 and is rotatably supported by the first holder piece 110a and the second holder piece 110b. 110b may be fastened to each other through the fastening member 138 while holding the welding torch 10 therebetween.

That is, when the welding torch 10 is inserted into the space between the first holder piece 110a and the second holder piece 110b, one outer surface and the other outer surface of the welding torch 10 are guided by the hinge pin 112, The first holder piece 110a and the second holder piece 110b are rotated so that the first holder piece 110a and the second holder piece 110b are rotated so that the fastening member 138 is engaged with the first fastening hole 113a and the second holder piece 110b of the first holder piece 110a, The welding torch 10 can be attached to the holder piece 110 by fastening and fixing the first fastening hole 113a.

The moving piece 120 may be configured to have a rail structure that is coupled to the movement path of the guide rail 200 so as to be movable in an arc shape. To this end, the moving piece 120 may be formed with a rail supporting portion 121 protruding from the rail groove portion of the guide rail 200. Since the rail support portion 121 of the movable piece 120 has a rail structure corresponding to the rail groove portion, when the movable piece 120 is rotated in the form of an arc, the rail support portion 121 moves along the movement path of the guide rail 200 And can be slidably moved.

The incident angle adjusting means 130 can adjust the vertical angle of the holder piece 110 with respect to the moving piece 120 while connecting the holder piece 110 and the moving piece 120 to each other. The incident angle adjusting means 130 includes a first engaging portion 131 extending to a lower portion of the moving piece 120, a second engaging portion 134 extending to one side of the holder piece 110, And an adjustment member 137 that couples the first and second coupling portions 131 and 134 so that the incident angle of the first coupling portion 131 and the second coupling portion 134 is adjusted.

At this time, the first engaging hole 132 and the second engaging hole 135 are formed in the first engaging part 131 and the second engaging part 134, The first engaging portion 131 and the second engaging portion 134 can be coupled to each other by being fixed to the nut member 136 through the hole 132 and the second engaging hole 135. [

Particularly, the incidence angle adjusting means 130 may be provided to the first engaging portion 131 and the second engaging portion 134 through the engaging member 138 in a state where the first engaging portion 131 and the second engaging portion 134 are arranged at desired vertical angles, The operator can set the welding torch 10 at a desired welding angle, for example, at an incident angle of the welding torch 10.

The body 300 is a structure for supporting the torch holder 100 and the guide rail 200 described above and has a proper weight for preventing the welding line from being separated from the welding line due to an external force.

The body 300 includes an upper body 310 on which the guide rail 200 is mounted through a mounting flange (not shown), a lower body 320 on which a welding hole 301 for welding is formed at the center, And a leg 330 connecting the upper body 310 and the lower body 320. Here, the cable holder 400 may be connected to the side of the body 300, for example, the side of the lower body 320.

The cable holder 400 can mount the torch cable 11 connected to the welding torch 10 from the upper side of the body 300. The cable holder 400 includes a connection part 410 which is bent at the side of the body 300 and whose tip ends are located on the upper side of the body 300, 11 may be mounted on the mounting portion 420.

 In the present embodiment, the mounting portion 420 is formed in the shape of a ring through which the torch cable 11 passes, but this is illustrated for convenience of explanation. The mounting portion 420 may include a variety And the like. For example, the torch cable may be constituted by a fitting groove structure in which the torch cable is detachably fitted in the lateral direction.

Second Example

The arc welding jig of the present invention explained in this embodiment is the same as the first embodiment except that the height of the welding torch is adjusted by adjusting the angle of the leg. Therefore, the same or corresponding components in Figs. 1 to 3 will be given the same or similar reference numerals, and a description thereof will be omitted here.

4 is a perspective view showing an arc welding jig according to a second embodiment of the present invention. FIG. 5 is a cross-sectional view cut along the line B-B in FIG. 5, and FIG. 6 is a perspective view illustrating a state after the height adjustment of the arc welding jig according to the second embodiment of the present invention.

4 to 5, the arc welding jig according to the second embodiment can adjust the height of the welding torch 10 by adjusting the inclination angle of the leg 330 ' The height can be adjusted.

In order to achieve this, the body 300 'includes an upper body 310, legs 330' that are inclined downwardly from the upper body 310, and a plurality And a lower body 320 'having an inclined groove 302 of the lower body 320'.

Here, since the leg 330 'is inclinedly connected to the lower portion of the body 300' in a radial fashion and is connected with a certain elastic force, when the leg 330 'is pressed toward the center of the body 300' 330 'may be arranged vertically, and when the pressure is released, the legs 330' may be arranged obliquely to the original shape.

The first inclined groove 302a, the second inclined groove 302b and the third inclined groove 302c may be formed in the lower body 320 'so as to be radially spaced from the center of the body 300' have. These inclined grooves 302 may have a larger inclination angle in the radial direction away from the center of the body 300 '. For example, the second inclined groove 302b has a larger inclination angle than the first inclined groove 302a, and the third inclined groove 302c has a larger inclination angle than the second inclined groove 302b.

Therefore, when the height of the welding torch 10 is increased in a state where the welding torch 10 is mounted on the torch holder 100, the leg 330 'of the body 300' For example, the first inclined groove 302a of the lower body 320 'positioned on the center side, the leg 330' is vertically arranged, and the height of the welding torch 10, In other words, the distance between the welding torch 10 and the welded portion can be increased.

6, when it is desired to reduce the height of the welding torch 10 while the welding torch 10 is mounted on the torch holder 100, the legs 330 of the body 300 ' For example, the third inclined groove 302c of the lower body 320 'located on the outer side of the body 300', the leg 330 'is inclined, The distance between the welding torch 10 and the welding site, which is the height of the welding torch 10, can be approximated.

As described above, it is possible to easily adjust the welding torch at a constant incidence angle so that the arc can be welded by a continuous rotational motion, and the cable holder for mounting the cable of the welding torch can prevent the interference by the cable And the like.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. For example, a person skilled in the art can change the material, size and the like of each constituent element depending on the application field or can combine or substitute the embodiments in a form not clearly disclosed in the embodiments of the present invention, Of the range. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and that such modified embodiments are included in the technical idea described in the claims of the present invention.

100: Torch holder 110: Holder piece
120: Moving piece 130: Incident angle adjusting means
200: guide rail 300: body
310: upper body 320: lower body
330: Leg

Claims (7)

A torch holder on which a welding torch is mounted;
A guide rail for providing a movement path of an arc shape in which the torch holder is moved; And
And a body on which the guide rail is mounted,
The body includes an upper body on which the guide rail is mounted, a lower body on which a welding hole is formed in the center, and a leg connecting the upper body and the lower body,
The leg being sloped in radial form at the bottom of the body,
And a plurality of inclined grooves into which the lower ends of the legs are inserted are formed on the upper surface of the lower body such that the inclined grooves are spaced apart from each other in the center direction of the lower body. The method according to claim 1,
Further comprising a cable holder flexibly extending at a side of the body to receive a torch cable connected to the welding torch. The method according to claim 1,
The torch holder
A holder piece for holding and fixing the welding torch;
A moving piece slidably installed along a movement path of the guide rail; And
And an incidence angle adjusting means for connecting the holder piece and the moving piece so that an incident angle of the welding torch is adjusted. The method of claim 3,
The incident angle adjusting means
A first engaging portion extending under the moving piece and having a first engaging hole formed therein;
A second engaging portion extending from one side of the holder and having a second engaging hole corresponding to the first engaging hole; And
And an adjustment member for coupling the first engagement hole and the second engagement hole to each other so that an incident angle of the welding torch is adjusted. 5. The method of claim 4,
The holder piece
A first holder piece and a second holder piece surrounding one outer surface and the other outer surface of the welding torch;
A hinge pin for hinging one end of the first holder piece and the second holder piece; And
And a fastening member for fastening the first holder piece and the other end of the second holder piece to each other. delete delete

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