KR101312913B1 - Arc welding apparatus - Google Patents

Abstract

PURPOSE: An arc welding device is provided to reuse a welding bar and to easily replace the welding bar, thereby improving the efficiency of the welding bar. CONSTITUTION: An arc welding device (10) includes welding bars, a cartridge, a case, and a cover. The welding bar includes a recessed portion in which a portion of a strip (S) being welded is seated. The cartridge is arranged on the surface of the welding bar and fixates the welding bars. The welding bars are arranged in a row so that the recessed portions of the adjoining welding bars are corresponded to each other. A portion in which a front strip (S1) and a rear strip (S2) are mutually welded is arranged on the recessed portion.

Description

Arc Welding Equipment {ARC WELDING APPARATUS}

The present invention relates to an arc welding apparatus for welding a strip in a continuous process, and more particularly to an arc welding apparatus with improved service life and productivity using a novel member.

In order to continuously perform a process such as rolling using a strip, fixing is required to weld the preceding strip and the trailing strip, and laser welding, electron beam welding, or the like can be generally used. On the other hand, such a method is limited in use due to the large device and expensive device cost.

Therefore, arc welding using a welding torch and a welding bar can be used. In this case, the welding bar is a portion where the welded portions of the preceding strip and the trailing strip are seated, and have been used in sizes corresponding to the preceding strip and the trailing strip. On the other hand, the welding bar has to be worn and replaced as the use time increases, and the weight thereof is considerable, so safety problems, etc. have occurred when replacing the welding bar, and since it is integrally formed, even if only a part is worn out. High cost has been consumed because they must be replaced all at once.

An object of the present invention devised to solve the above-mentioned problem is to provide an arc welding apparatus with increased service life and improved process efficiency.

In addition, another object of the present invention is to provide an arc welding apparatus that can reuse the welding bar, and also easy replacement of the welding bar.

In addition, another object of the present invention is to provide an arc welding device that is easy to store and manage the welding bar as a consumable.

According to a feature of the present invention for achieving the above object, the present invention is an arc welding apparatus for welding a strip in a continuous rolling process, a plurality of welding bars provided with a recess in which the welded portion of the strip ( welding-bar); A cartridge provided on an outer surface of the welding bar to fix the plurality of welding bars; A case accommodating the welding bar and the cartridge; And a cover covering one surface of the case, wherein the plurality of welding bars includes an arc welding device in which the recesses provided in the adjacent welding bars are aligned in one direction so as to correspond to each other.

The welding bars may be aligned in one direction such that neighboring welding bars contact each other, and the recess may be provided on an exposed outer surface of the welding bar.

The welding bar is a hexahedron including a pair of first surfaces formed of a surface in contact with adjacent welding bars and a surface parallel to the contact surface, and a plurality of second surfaces connected to the pair of first surfaces. At least one of the second surfaces may be provided with a recess.

The first surface of the welding bar is provided with grooves or protrusions, and the welding bars adjacent to each other may be coupled to each other by the grooves and the protrusions.

The welding bar may have a recess on a second surface of the welding bar, and the recess may be provided in a bar shape to be parallel to a direction in which the welding bar is aligned.

The concave portion may be provided with a length corresponding to the welded portion of the strip extending from each other the concave portion provided in the adjacent welding bar.

The cartridge is provided to cover at least a portion of the first and second surfaces of the welding bar, the cartridge has an upper surface opening for exposing at least one of the recessed portion provided on the second surface to the outside, It may include a front opening portion for exposing one side, and may further include a handle portion in a portion adjacent to the front opening portion.

The cartridge is provided with one or more stepped portions provided on the surface in contact with the second surface of the welding bar indented in the longitudinal direction of the welding bar, and the stepped portions contact the recessed portions of the welding bar to fix the recessed portions. can do.

The case may include an opening corresponding to an upper opening of the cartridge, an inlet corresponding to the front opening of the cartridge, and a cartridge surrounding the welding bar and the welding bar may be received into the case through the inlet. have.

The case may include one or more sliding bars protruding from an inner surface of the case to correspond to the stepped portion of the cartridge, and the stepped portion may slide into the case through the sliding bar.

The arc welding device may further include a plate provided between the cover and the welding rod.

The cover includes a through hole fastening to the bolt, wherein the bolt is formed of a head portion and a screw portion, the periphery of the through hole is provided in a shape corresponding to the threaded portion of the bolt, the length of the screw portion of the bolt of the cover It is provided longer than the thickness may protrude from the cover to compress the plate inward.

According to the present invention as described above, it is possible to provide an arc welding apparatus with increased service life and improved process efficiency.

Further, according to the present invention, it is possible to provide an arc welding apparatus capable of reusing a welding bar and easily replacing the welding bar.

In addition, the present invention can provide an arc welding device that is easy to store and manage the welding bar as a consumable.

1 is a view schematically showing an arc welding apparatus according to a preferred embodiment of the present invention.
Figure 2 is a perspective view of the strip seating portion of FIG.
3 is an exploded perspective view of the strip seating portion of FIG.
Figure 4a is a perspective view of the combined welding bar according to an embodiment of the present invention.
Figure 4b is an exploded perspective view of the welding bar of Figure 4a.
Figure 4c is a plan view showing a state in which a plurality of welding bar is coupled.
5 is a perspective view of a cartridge according to an embodiment of the present invention.
6 is a perspective view of a case according to an embodiment of the present invention.
FIG. 7 is a cross-sectional view taken along line II of FIG. 1. FIG.
8 is a view schematically showing the coupling of the cover and the case of FIG.

The details of other embodiments are included in the detailed description and drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be embodied in various forms. In the following description, it is assumed that a part is connected to another part, But also includes a case in which other elements are electrically connected to each other in the middle thereof. In the drawings, parts not relating to the present invention are omitted for clarity of description, and like parts are denoted by the same reference numerals throughout the specification.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a view schematically showing an arc welding apparatus according to a preferred embodiment of the present invention, Figure 2 is a perspective view of the strip seating portion of FIG.

Arc welding apparatus 10 for welding the strip (S) in the continuous rolling process according to a preferred embodiment of the present invention, the recessed portion 111 is provided with a welded portion (W) of the strip (S) A plurality of welding-bars 110; A cartridge 120 provided on an outer surface of the welding bar 110 to fix the plurality of welding bars 110; A case 130 accommodating the welding bar 110 and the cartridge 120; And a cover 140 covering one surface of the case 130, wherein the plurality of welding bars 110 are disposed in one direction such that the recesses 111 provided in the adjacent welding bars 110 correspond to each other. Aligned. In addition, the welding bar 110 may be aligned in one direction such that adjacent welding bars 110 contact each other, and the recess 111 may be provided on an exposed outer surface of the welding bar 110.

For example, the process of continuously rolling the strip S, such as stainless steel, requires a process of connecting the preceding strip S1 and the trailing strip S2, wherein the arc welding apparatus 10 includes the preceding strip S1. ) And the trailing strip (S2) are welded so that the continuous process can be maintained. At this time, the portions welded to each other in the preceding strip (S1) and the following strip (S2) is seated on the strip seating portion 100 provided on the support 12, by using an arc by the welding torch 11 Are welded. The strip seating portion 100 includes a welding bar 110 having a recess 111, and a portion W in which the preceding strip S1 and the trailing strip S2 are welded to each other is formed in the recess portion ( 111).

The welding torch 11 has a different polarity from that of the welding bar 110, and uses the welding torch 11 to melt the preceding strip S1 and the trailing strip S2, and the preceding strip S1. It is necessary to apply a weld bead on the back surface where the following strip S2 is melted and welded. In order to form the welding bead, the preceding strip (1) is provided such that the recess 111 having a predetermined shape is provided in a portion supporting the portion W in which the preceding strip S1 and the trailing strip S2 are welded to each other. S1) and the trailing strip S2 are seated on the strip seating part 100 and then welded.

3 is an exploded perspective view of the strip seating portion of FIG. 4A is an exploded perspective view of a welding bar according to an embodiment of the present invention, FIG. 4B is an exploded perspective view of the welding bar of FIG. 4A, and FIG. 4C is a plan view illustrating a plurality of welding bars combined.

3 and 4A to 4C, the strip seating part 100 includes a plurality of welding bars 110, a cartridge 120 surrounding at least a portion of an outer surface of the welding bar 110, and the cartridges. It may include a case 130 and a cover 140 for receiving a welding bar 110 having a 120.

The welding bar 110 includes a plurality of first pairs of first surfaces 114 and a pair of first surfaces 114 that are formed in parallel with the surfaces of the welding bars 110 which are adjacent to each other. A hexahedron including a plurality of second surfaces 115 that are perpendicularly connected to each other), and at least one of the second surfaces 114 may be provided with a recess 111. In addition, a groove 112 or a protrusion 113 is provided on the first surface 111 of the welding bar 110, and the groove 112 and the protrusion 113 are adjacent to each other in the welding bar 110. Can be combined to be fastened. The welding bar 110 includes a recess 111 on the second surface 115 of the welding bar 110, and the recess 111 is parallel to the direction in which the welding bar 110 is aligned. It may be provided in a rod shape.

The number of the welding bars 110 can be modified by the size of the strip, etc., but the first to fourth welding bars 110a, 110b, 110c, and 110d will be described in the following embodiments for convenience.

The welding bar 110 is provided with the first to fourth welding bars (110a, 110b, 110c, 110d) are sequentially aligned in one direction, at this time, the first to fourth welding bars (110a, 110b, 110c, 110d) ) May be provided such that each first surface 114 abuts each other. In this case, grooves 112 or protrusions 113 are alternately provided on the first surfaces 114 of the first to fourth welding bars 110a, 110b, 110c, and 110d, and the grooves 112 or protrusions are alternately provided. 113 may be provided with a size corresponding to each other and fastened. In the present exemplary embodiment, four grooves 112 and four protrusions 113 inserted into the grooves 112 are illustrated in the first surface 114, but the present invention is not limited thereto.

The first to fourth welding bars 110a, 110b, 110c, and 110d may include a recess 111 at the same position on the second surface 115. The recess 111 may have a length corresponding to the welded portion of the strip in which the recesses 111 provided in the neighboring welding bars 110 extend to each other. That is, the recess 111 provided in the second surface 115 of the first to fourth welding bars 110a, 110b, 110c and 110d may be the first to fourth welding bars 110a, 110b, 110c and 110d. ) May extend side by side in the direction in which they are aligned. Therefore, the groove 112 and the protrusion 113 facilitate assembly or detachment of the first to fourth welding bars 110a, 110b, 110c, and 110d separately, and the first to fourth welding bars 110a. , 110b, 110c, 110d can be prevented from being spaced apart, when welding the strip, it is possible to uniformly form the welding bead of the back of the portion to which the strip is welded, and also a constant shape, such as integral welding bar Makes it easy to maintain. In addition, the groove 112 and the protrusion 113 may facilitate alignment of the recess 111 provided in the first to fourth welding bars 110a, 110b, 110c, and 110d. In addition, the protrusion 113 is omitted in the fourth welding bar 110d provided at the outermost part, and the protrusion 113 is not provided at the outermost surface of the combined welding bars 110. ) Can be prevented from interfering with the cartridge 120 or the case 130.

5 is a perspective view of a cartridge according to an embodiment of the present invention.

Referring to FIG. 5 together with FIG. 3 described above, the cartridge 120 is provided to cover at least a portion of the first and second surfaces 114 and 115 of the welding bar 110 and the cartridge 120. The upper surface opening portion 121a exposing at least one of the recesses 111 provided on the second surface 114 to the outside, and the front opening portion 125 exposing any one side of the first surface 114. It may further include a handle portion 127 in a portion adjacent to the front opening (125). In addition, the cartridge 120 has one or more steps provided inwardly in the longitudinal direction of the welding bar 110 on the surfaces 122 and 123 contacting the second surface 115 of the welding bar 110. A part 126 may be provided, and the stepped part 126 may contact the recess 111 of the welding bar 110 to fix the recess 111.

The welding bar 110 assembled by the groove and the protrusion may be further fixed by the cartridge 120. An upper surface opening 121a may be provided on the upper surface 121 of the cartridge 120 to expose the recess 111 of the welding bar 110. In addition, both sides 122 and the lower surface 123 of the cartridge 120 except for the upper surface 121 are in contact with the second surface 115 of the welding bar 110, and both sides of the cartridge 120 122 and at least a portion of the lower surface 123 may be provided with a stepped portion (126). The end 126a of the stepped portion 126 is in line with the end 111a of the recess 111 of the welding bar 110 to support the welding bar 110, and thus the welding bar 110. Can be fixed in position.

The cartridge 120 is provided with a front opening portion 125 into which the welding bar 110 is inserted, and a rear surface 124 opposite to the front opening portion 125 is a first surface 114 of the welding portion 110. The welding unit 110 may be fixed in contact with the welding unit 110. In addition, a handle portion 127 may be provided at a portion of the lower surface 123 adjacent to the front opening 125 of the cartridge 120 adjacent to the stepped portion 126, and the handle portion 127 may be welded. Facilitate the movement of the cartridge 120 surrounding the bar 110.

6 is a perspective view of a case according to an embodiment of the present invention. 7 is a cross-sectional view taken along the line I-I of FIG. 1, and FIG. 8 is a view schematically showing the coupling of the cover and the case of FIG.

Referring to FIG. 6 together with FIG. 3 described above, the case 130 is provided with a portion 131a corresponding to an upper surface opening portion 121a of the cartridge 120 being opened, and a front opening portion of the cartridge 120. The inlet 135 is provided to correspond to the 125, and the cartridge 120 surrounding the welding bar 110 and the welding bar 110 may be stored in the case 130 through the inlet 135. have. In addition, the case 130 includes one or more sliding bars 136 protruding from the inner surface of the case 130 to correspond to the stepped portion 126 of the cartridge 120, and the stepped portion 126 is It may slide into the case 130 through the sliding bar 136.

The welding bar 110 wrapped in the cartridge 120 is introduced into the case 130 through the step 126 of the cartridge 120 and the sliding bar 136 of the case 130, and thus, the cartridge 120. ) And the case 130 may be provided so as not to be spaced apart from each other, and the welding bar 110 and the cartridge 120 can be drawn into and drawn out of the case 130 with only a single operator without a large force. . In this case, the welding bar 110 and the cartridge 120 may be easily pulled out and drawn out by the handle part 127 provided in the cartridge 120.

6 to 8, the inlet 136 of the case 130 in which the welding bar 110 and the cartridge 120 are accommodated may be fixed by the cover 140. A first fastening part 137 is provided around the inlet 136 of the case 130, and the cover 140 is provided with a second fastening part 142 which is fastened to the first fastening part 137. can do.

The cover 140 has a base portion 141 provided with a size corresponding to the inlet 136 of the case 130 and a second fastening portion 142 extending side by side from the base portion 141. The first fastening part 137 is provided to overlap the second fastening part 142. In addition, the first and second fastening parts 137 and 142 are provided with holes 138 and 143, respectively. For example, the holes 138 and 143 may be provided with a separate fastening member 20 such as a bolt-nut or a stud. , 21).

In addition, the arc welding device may further include a plate 150 provided between the cover 140 and the welding rod 110. The plate 150 is provided in a size corresponding to the base portion 141 of the cover 140, for example, may be made of a material having a predetermined strength, such as stainless steel. The cover 140 includes a through hole 144 that engages with the bolt 30 formed of the head part 31 and the screw part 32, and the circumference 144a of the through hole 144 is the bolt 30. Is provided in a shape corresponding to the threaded portion 32 of the, the length (t1) of the threaded portion 31 of the bolt 30 is provided longer than the thickness (t2) of the cover 140 is greater than the cover 140 The protrusion may compress the plate 150 inwardly.

Typically, a welding bar having a concave portion is used to weld the preceding strip and the trailing strip, and to form a bead of a predetermined shape on the back side of the portion to be welded, which has been provided as an integral bar. Therefore, in the case where the welding bar is worn, in the case of localized wear, it has to be replaced integrally. Therefore, the welding bar is expensive and not only increased the production cost, but also because the welding bar has a large weight is replaced by a number of workers, at this time excessive force is applied to the welding bar to change the appearance of the welding bar If the welding bar is difficult to reuse, and also frequently during the replacement problems such as scattering has occurred. In addition, the welding bar has to be replaced with a consumable material, but the size of the welding bar is difficult to store and load.

The present invention can increase the use efficiency of the welding bar by configuring a plurality of the welding bar, and also provided with recesses on all sides of the welding bar. In the arc welding apparatus, if the concave portion is worn differently according to the welding position and the current difference, and either side is over-weared or a protruding bar is formed on the surface, the welding bar of the corresponding part is replaced without replacing the welding bar as a whole. Also, it can be used by changing the position so that the other side of the welding bar is on top. In addition, the welding bar according to the present embodiment is provided with a small size and easy to replace, can be replaced by a single operator and the weight is also small to prevent the occurrence of a safety accident.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

S: strip 10: arc welding device
11: welding torch 12: support part
20: bolt 100: strip seat
110: welding bar 111: recess
120: cartridge 126: stepped portion
130: case 136: sliding bar
140: cover 150: plate

Claims (12)

Arc welding device for welding strip in continuous rolling process,
A plurality of welding bars (welding-bars) having recesses in which the welded portions of the strip are seated;
A cartridge provided on an outer surface of the welding bar to fix the plurality of welding bars;
A case accommodating the welding bar and the cartridge; And
And a cover covering one surface of the case.
The plurality of welding bar arc welding apparatus is arranged in one direction so that the recessed portion provided in the adjacent welding bar to each other. The method of claim 1,
The welding bar is aligned in one direction such that the welding bar adjacent to each other, the concave portion is arc welding apparatus, characterized in that provided on the exposed outer surface of the welding bar. The method of claim 1,
The welding bar is a hexahedron including a pair of first surfaces formed of a surface in contact with adjacent welding bars and a surface parallel to the contact surface, and a plurality of second surfaces connected to the pair of first surfaces. At least one of the second surface arc welding apparatus, characterized in that provided with a recess. The method of claim 3,
The first surface of the welding bar is provided with a groove or a projection, the arc welding device, characterized in that the neighboring welding bar is coupled to each other and the groove and the projection are coupled to each other. The method of claim 3,
The welding bar has a concave portion on the second surface of the welding bar, the concave portion arc welding device, characterized in that provided in the bar shape parallel to the direction in which the welding bar is aligned. The method of claim 5,
The concave portion arc welding apparatus, characterized in that the concave portion provided in the adjacent welding bar is provided with a length corresponding to the welded portion of the strip extending from each other. The method of claim 3,
The cartridge is provided to cover at least a portion of the first and second surfaces of the welding bar, the cartridge has an upper surface opening for exposing at least one of the recessed portion provided on the second surface to the outside, An arc welding apparatus comprising a front opening portion for exposing one side, and further comprising a handle portion in a portion adjacent to the front opening portion. The method of claim 3,
The cartridge is provided with one or more stepped portions provided on the surface in contact with the second surface of the welding bar indented in the longitudinal direction of the welding bar, and the stepped portions contact the recessed portions of the welding bar to fix the recessed portions. Arc welding device, characterized in that. The method of claim 7, wherein
The case is provided with a portion corresponding to the upper opening of the cartridge is opened, and provided with an inlet to correspond to the front opening of the cartridge, the welding bar and the cartridge surrounding the welding bar is to be received into the case through the inlet Arc welding device characterized in that. 9. The method of claim 8,
And the case includes one or more sliding bars protruding from the inner surface of the case so as to correspond to the stepped portion of the cartridge, and the stepped portion slides into the case through the sliding bar. The method of claim 1,
The arc welding device further comprises a plate provided between the cover and the electrode. 12. The method of claim 11,
The cover includes a through hole for fastening with the bolt, the bolt is formed of a head portion and a screw portion, the periphery of the through hole is provided in a shape corresponding to the threaded portion of the bolt, the length of the screw portion of the bolt of the cover Arc welding device characterized in that it is provided longer than the thickness and protrudes than the cover to press the plate inward.

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