KR20110034748A - Auto welding carriage with means for efficiently controlling a length and an angle of a welding torch - Google Patents

Abstract

PURPOSE: An auto welding carriage for controlling the length and angle of a welding torch is provided to enable the length or angle of a welding torch on an automatic welding carriage to be performed rapidly and easily by the length and angle control units of the welding torch. CONSTITUTION: An auto welding carriage for controlling the length and angle of a welding torch comprises a length control unit and an angle control unit. The length control unit comprises a casing, a screw axis, and a screw block. The casing comprises an inner space. The angle control unit comprises a moving-object housing(150), a torch clamp(160), a joint(120), a rotating cylindrical body(130), an angle control screw axis(140), and a rotating frame(125). The moving-object housing comprises a lower moving object. The torch clamp has a shape of a bent bar. The joint forms a screw holding hole(122a), and a cylindrical holding unit(122). The cylindrical holding unit comprises a cylindrical holding hole(122b).

Description

Auto welding carriage with means for efficiently controlling a length and an angle of a welding torch}

The present invention relates to an automatic welding carriage that is easy to adjust the length and angle of the welding torch, and more particularly, the replacement of worn or broken parts is simpler than in the prior art, and the length or angle of the welding torch during welding according to the site situation. The present invention relates to an improved automatic welding carriage that can be adjusted quickly and precisely.

Vessels and other offshore structures are generally welded together to form a unit structure by welding a ship's thick plate, various metal sheets or shaped steel materials, and then assembling and welding them. Particularly, in the construction of ships, vertical bulkheads are welded to the main plate, which is a metal bottom plate, or combined, or welded each type of section steel material to the vertical bulkhead to form a unit structure. A welding torch along an edge line where these structural materials meet each other Several devices have been proposed in the related art for the automatic welding while moving the vertical or horizontal.

The automatic welding carriage is a kind of welding device for automatically performing edge welding, butt welding and corner welding while moving along the welding line by using a moving rail or driving wheel. The automatic welding carriage is equipped with a torch clamp to fix the welding torch to the fillet welding, etc. along the edge line of the wall. However, in the case of a welding site, a welding line is necessarily curved, or a portion where the curvature is different from the curve. In this case, the operator had to stop the automatic welding carriage, readjust the length or angle of the welding torch, and drive the automatic welding carriage again to complete the welding.

In order to solve such a problem, several devices for adjusting the length or angle of the conventional welding torch have been proposed, and Korean Patent Registration No. 0444422 "Automatic welding torch angle and height adjusting device" and Korean Utility Model Registration 0364236 is an example of an omnidirectional welding angle control device of a mini carryger for a welder. These devices are difficult to manufacture due to their complicated structure, and there is a problem that it is difficult for the operator to respond quickly and immediately to the site situation that changes frequently along the welding line, and can be applied to automatic welding carriages of various shapes or structures. This has the disadvantage of falling.

Thus Applicant's Patent No. 827194 "Auto Welding Carriage" discloses an improved welding torch length and angle adjuster. 8 is an external perspective view of an automatic welding carriage provided with a welding torch length and angle adjusting device disclosed in the applicant's patent.

In the patent, a rotation angle adjuster consisting of a worm gear and a worm wheel engaged with the inside of the housing provided on the trolley, and a screw shaft and a screw block screwed to the inside of another housing are provided, and a torch clamp is provided on one side. A torch length adjuster is used to adjust the length or angle of the welding torch. The patent has the advantage of being very economical and efficient in that it is possible to quickly and simply adjust the rotation angle of the welding torch only by the operation of the worm gear and the worm wheel. However, in the structure of the automatic welding carriage, it is difficult to mount the adjusting device of such a shape, and the adjustment of the welding torch has a very small fine adjustment.

The present invention is to solve the above-mentioned conventional problems, an object of the present invention is to quickly and easily adjust the length or angle of the welding torch mounted on the automatic welding carriage as well as the automatic welding of the fine angle adjustment of the welding torch easy To provide a carriage.

In addition, the present invention is to improve the welding torch length and the angle adjusting device is simplified in its structure so that it can be easily replaced in the wear or breakage of the components due to frequent use, easy to mount on various types of automatic welding carriage.

In order to solve the tactical technical problem, in the present invention, by rotating the drive wheel 215 rotatably mounted in front and rear of the cart by the drive motor 220 provided on the upper portion of the trolley 210 automatically moves along the welding line. In the automatic welding carriage 200 to perform the welding while being coupled to the upper portion of the bogie, the casing 110 having a space therein, the length adjustment screw shaft 111 rotatably mounted to the casing, A torch length adjusting unit comprising a screw block 112 screwed onto the length adjusting screw shaft in the casing; And a fluid housing 150 having a lower fluid therein, which is coupled to an upper portion of the casing, and has a rod shape bent to form a predetermined angle at a front end and a rear end, and a torch clamp 160 for fixing a welding torch at the front end. ) Is coupled to the bent joint portion 120, the cylindrical receptor 122 having a cylindrical receptor 122 having a screw receiving hole 122a penetrating up and down and a cylindrical receiving hole 122b on the side at the rear end thereof. It is rotatably mounted to the screw guide hole 131 is formed to penetrate the outer peripheral surface up and down, the inner circumferential surface of the screw guide hole is a rotating cylindrical body 130 is formed, the screw guide of the rotating cylindrical body An angle adjusting screw shaft 140 and the bent one end is coupled to the lower fluid in the fluid housing by screwing through the ball To support the vertical rotation of the hip rotation support frame 125, the torch angle adjusting unit consisting of binding to an upper portion of the casing; Disclosed is an automatic welding carriage that is easy to adjust the length and angle of the welding torch, characterized in that configured to include.

In this case, any one selected from the careful bearing 151 or the ball joint 152 may be used as the lower fluid.

In addition, a bearing receiving portion 121 is formed at a portion where the extension line of the front end portion and the rear end portion of the curved joint portion 120 receives the bearing 123 therein and is rotatably coupled to the rotation support frame 125. It is preferable.

According to the automatic welding carriage equipped with the welding torch length and angle adjusting device of the present invention, it is possible to adjust the length and angle of the welding torch quickly and efficiently at any time according to the site situation. In particular, it is possible to quickly and stably adjust the fine vertical angle of the welding torch, and it is easy to install even in the carriage of the welding carriage having various shapes.

In addition, the configuration is simple, easy to assemble or disassemble, it is easy to replace the worn or damaged parts by frequent use, there is an advantage that the manufacturing cost is low.

Hereinafter, with reference to the accompanying drawings will be described in more detail the configuration and operation of the present invention.

1 is a perspective view of the overall appearance of the automatic welding carriage according to the present invention. Automatic welding carriage 200 of the present invention is to perform the welding automatically while moving along the welding line of the corner or corner of the wall structure to be welded, basically the balance of the frame 210, the balance 210 Drive motor 220 is mounted on the top of the), the drive wheel 215 is rotatably mounted in front and rear of the cart 210 and receives power from the drive motor 220 and the drive circuit (not shown) and The controller 240 has various operation buttons 241 and operation switches 242 on the outside. In the drawings, reference numeral 250 denotes a magnet detachment handle for attaching and detaching a magnet mounted on the bottom surface of the truck.

The automatic welding carriage 200 shown is equipped with a guide frame 231 as a type for performing welding while moving along the welding line such as the corner formed by the wall and the bottom surface of the object to be welded, The guide roller 232 is rotatably supported at one end of the guide frame 231. The long hole formed in the guide frame 231 is fixed to the adjustment tab 233 to adjust the protruding length of the guide frame 231.

The automatic welding carriage 200 having the above-described configuration maintains the welding distance while the pair of guide rollers 232 are in contact with the wall and rolls along the welding line while moving forward or backward by the rotation of the driving wheel 215. Weld work is performed.

When the automatic welding carriage 200 performs a welding operation while moving along the welding line, the welding line is changed from a straight section to a curved section, or a change in the working environment occurs such as a change in curvature of the welding line. At this time, in the present invention, the operator can adjust the length or angle of the welding torch to match the specifications or shape of the quickly changed welding line.

Torch length and angle control device 100 of the present invention is largely composed of torch length adjustment unit and torch angle adjustment unit.

Figure 2 is an external perspective view of the welding torch length and angle adjusting device of the present invention, Figure 3 is an external perspective view of the welding torch length and angle adjusting device of Figure 2 seen from below, Figure 4 is a first embodiment in the present invention Figure 5 is an exploded perspective view of the torch angle control unit according to Figure 5 is a partially exploded view of the welding torch length and angle control device according to the first embodiment of the present invention.

As shown in Figure 4 and 5, the torch angle adjustment unit is a large bent joint portion 120, fluid housing 150, rotation support frame 125, angle adjustment screw shaft 140 and the cylindrical cylinder 130 It is configured to include).

The curved joint part 120 has a curved rod shape as it rotates up and down to adjust the vertical tilt angle of the mounted welding torch. The torch clamp 160 is fixedly coupled to the front end portion 120a of the curved joint portion 120 by the fastening screw 162, and torch fixing means 161 for fixing the welding torch fitted to the torch clamp 160 is provided. Have

A cylindrical container 122 having a rectangular parallelepiped shape is formed at the rear end portion 120b of the bent joint part 120. The cylindrical container 122 penetrates up and down to form a screw receiving hole 122a, and a cylindrical housing is provided at a side surface thereof. The ball 122b is formed through or concave.

In the central portion of the bent joint portion 120 where the front end portion 120a and the rear end portion 120b meet each other, a bearing accommodation portion 121 having a bearing accommodation portion 121a for accommodating the bearing 123 is formed. And a bolt through hole 121b is formed through the bearing accommodation hole 121a.

The cylindrical container 122 has a cylindrical cylindrical cylinder 130 is inserted from the side, the outer circumferential surface of the rotating cylindrical body 130 is formed with a screw guide hole 131 to penetrate up and down the outer circumferential surface, the screw An internal thread is formed on the inner surface of the guide hole 131.

As shown, the bearing 151 is inserted into the fluid housing 150 as a lower fluid. A fastening hole 150b for fastening the screw 150c is formed in the fluid housing, and a through hole 150a is formed in the upper surface central portion thereof so that one end of the angle adjusting screw shaft 140 to be described later can pass therethrough. The diameter of the through hole 150a is smaller than the outer diameter of the protruding jaw 141 of the angle adjusting screw shaft 140 to be described later so that the protruding jaw 141 does not escape from the fluid housing 150. The watch bearing 151 has a property and a function that can be displaced with a certain amount of play when the twisting force acts on the fluid housing 150 or the rotating shaft, or when a force that is displaced with respect to the rotating center is applied. In the present invention, a self-aligning ball bearing is used.

The angle adjusting screw shaft 140, which is formed with a screw thread in the body, is inserted into and coupled to the careful bearing 151 and the rotary cylinder 130. That is, the lower end of the angle adjusting screw shaft 140 is inserted into the center of rotation of the aligning bearing 151, the upper end is screwed through the screw guide hole 131 of the rotary cylinder 130. As shown in the figure, a protruding jaw 141 is formed on the outer circumferential surface of the lower end of the angle adjusting screw shaft 140 to prevent the angle adjusting screw shaft 140 from being separated from the through hole 150a of the fluid housing 150. An angle adjusting knob 142 is coupled to the upper end of the angle adjusting screw shaft 140 to help the rotation angle.

The bearing receiver 121 in which the bearing 123 is mounted is rotatably coupled to the rotation support frame 125. That is, the bent joint portion 120 is coupled to the rotation support frame 125 by a fastening bolt 124a and a nut 124b, wherein the fastening bolt 124a serves as a rotating shaft. The lower end of the rotation support frame 125 is formed with a fastening hole (125b) for fastening the bolt or screw (125c). In the drawings, reference numeral 125a denotes a through hole through which the fastening bolt 124a is coupled.

Torch angle adjustment unit having the above-described configuration is coupled to the upper portion of the torch length adjustment unit as shown in FIG.

Torch length adjustment unit is largely parallel to both sides of the casing 110 having a space therein, a length adjusting screw shaft 111 rotatably coupled to the central portion of the casing 110, the length adjusting screw shaft 111 It consists of a guide block 113a, 113b and a screw block 112 for linear reciprocating motion by screwing to the length adjusting screw shaft 111. The screw block 112 is guided by the guide rods 113a and 113b by the rotation of the screw of the length adjusting screw shaft 111 to perform a linear movement, the bottom surface is coupled to the balance plate 211 by screws or bolts, etc. Fastening hole 112a is formed. One end of the length adjusting screw shaft 111 is coupled to the length adjusting knob (111a) for convenience of operation.

  Torch length and angle adjusting device having such a configuration is mounted on the trolley 210 of the automatic welding carriage 200 as shown in FIG. That is, the fluid housing 150 and the rotation support frame 125 of the torch angle adjusting unit are coupled to the upper surface of the casing 110 by fastening screws 150c and 125c, and the screw block 112 of the torch length adjusting unit is connected. ) Is coupled to the top plate 211 of the trolley 210 with screws or bolts.

When the welding is performed along the welding line, such as the edge of the welding structure, such as plate or square material, using the automatic welding carriage 200 of the present invention, when the up-and-down angle of the welding torch occurs, the operator has an automatic welding carriage ( By only slightly turning the angle adjustment knob 142 without having to stop the operation of the 200, it is possible to precisely adjust the vertical angle of the welding torch fixed to the torch clamp 160. That is, when the operator needs to change the upper and lower angles of the welding torch, when the angle adjusting knob 142 is turned, the angle adjusting screw shaft 140 rotates and the rotating cylindrical body screwed thereto is rotated in the clock of FIG. It will rotate counterclockwise. At this time, the bent joint portion 120 to which the torch clamp 160 is coupled is a seesaw movement up and down using the fastening bolt 124a of the bearing accommodation hole 121 as the rotation axis. Therefore, the end of the welding torch fixed to the torch clamp 160 is rotated up and down, so that the welding angle is quickly adjusted.

When the angle adjusting screw shaft 140 and the rotating cylindrical body 130 rotates, a torsional force acts on the center of rotation of the circumferential bearing 151, and the circumferential bearing 151 mounted inside the fluid housing 150. This allows the displacement to have some play. That is, the careful bearing 151 has a lower end portion of the screw shaft 140 when the rotating cylinder 130 is rotated by the rotation of the screw shaft 140 to adjust the vertical angle of rotation of the bent joint portion 120 to a certain extent. It acts as a means of the lower fluid to allow positional shifts. Therefore, in the present embodiment, the screw shaft 140 may be slightly inclined by the rotation of the rotor 130 due to the presence of the lower bearing body 151, which is perpendicular to the bottom surface. If the lower end of the screw shaft 140 is fixed to the fluid housing 150 without the careful bearing 151, the rotating body 130 may not rotate due to the rotation of the screw shaft 140. Up and down rotation of 120 becomes impossible.

According to the torch angle adjusting unit of the present invention, the inclination angle of the torch can be quickly and precisely adjusted by the rotation of the angle adjusting screw shaft 140 and the rotation of the rotating cylinder 130 and the rotation of the bent joint part 120. Will be.

As the lower fluid, not only the bearing but also a ball joint may be formed at the lower end of the screw shaft 140 as in the following embodiment.

Figure 6 is an exploded perspective view of the torch angle control unit according to a second embodiment of the present invention, Figure 7 is a partially exploded view of the welding torch length and angle control device according to a second embodiment of the present invention.

In the present embodiment, the ball joint 152 is coupled to the lower end of the screw shaft 140 as a lower fluid. That is, in this embodiment, the ball joint 152 is used instead of the caution bearing 151 in the above-described first embodiment. Thus, the role of the ball joint 152 is the same as the careful bearing 151. However, in this embodiment, since the diameter of the through hole 150a of the fluid housing may be smaller than the diameter of the sphere of the ball joint 152, it is not necessary to form the protruding jaw 141 on the screw shaft 140. Except that the ball joint 152 is coupled to the lower end of the screw shaft 140 instead of the bearing 151, the remaining configuration of the torch length and the angle adjusting device 100 is the same as the first embodiment described above, so Description is omitted.

If the distance between the welding torch and the welding line is adjusted before or after the start of the welding, the length adjusting knob 111a is rotated so that the casing 110 is moved by the spiral movement of the screw block 112 and the length adjusting screw shaft 111. It moves forward and backward on the bogie, and eventually the length of the welding torch fixed to the torch clamp 160 is adjusted.

In addition, all components of the torch length and angle adjusting device of the present invention have a simple structure and are very easy to disassemble and assemble. Therefore, if any part is worn or damaged, only the corresponding parts can be simply replaced. It can be used semi-permanently.

According to the automatic welding carriage 200 of the present invention, it is possible to adjust the length or angle of the welding torch by a simple operation without affecting the welding operation or quality of the welding torch even during welding.

1 is a perspective view of the overall appearance of the automatic welding carriage according to the present invention.

Figure 2 is an external perspective view of the welding torch length and angle control device of the present invention.

3 is an external perspective view of the welding torch length and angle adjusting device of FIG.

Figure 4 is an exploded perspective view of the torch angle adjustment unit according to the first embodiment of the present invention.

Figure 5 is a partially exploded view of the welding torch length and angle control device according to a first embodiment of the present invention.

Figure 6 is an exploded perspective view of the torch angle adjustment unit according to a second embodiment of the present invention.

Figure 7 is a partially exploded view of the welding torch length and angle control device according to a second embodiment of the present invention.

8 is an external perspective view of an automatic welding carriage having a conventional welding torch length and angle adjusting device.

<Explanation of symbols for the main parts of the drawings>

100: torch length and angle adjusting device 110: casing

111: length adjusting screw shaft 112: screw block

113a and 113b: guide rod 120: curved joint portion

121: bearing port 122: cylindrical container

122a: screw receiving hole 122b: cylindrical receiving hole

123: bearing 125: rotary support frame

124a: fastening bolt (rotating shaft) 130: rotating cylinder

131: screw guide hole (131) 140: angle adjustment screw shaft

141: protruding jaw 150: fluid housing

151: careful bearing 152: ball joint

160: torch clamp

Claims (3)

An automatic welding carriage 200 for performing welding while rotating the driving wheel 215 rotatably mounted in front and rear of the trolley by the driving motor 220 provided at the upper portion of the trolley 210 and automatically moving along the welding line. ), As coupled to the upper portion of the bogie, the casing 110 having a space therein, the length adjusting screw shaft 111 rotatably mounted to the casing, the screw screwed on the length adjusting screw shaft inside the casing Torch length adjusting unit consisting of a block (112); And It is coupled to the upper portion of the casing, the fluid housing 150 including a lower fluid therein, the front end and the rear end has a bent rod shape to form a constant angle, the torch clamp 160 for fixing the welding torch at the front end Is coupled, the rear end portion is bent joint portion 120 is formed with a cylindrical container 122 having a screw receiving hole 122a penetrating up and down and a cylindrical receiving hole 122b on the side, rotates in the cylindrical container 122 It is possible to have a screw guide hole 131 is formed to penetrate the outer peripheral surface up and down, the inner circumferential surface of the screw guide hole is a rotating cylindrical body 130 is formed with a female thread, the screw guide hole of the rotating cylindrical body An angle adjusting screw shaft 140 and the bent joint that one end is coupled to the lower fluid in the fluid housing by screwing through A torch angle adjustment unit comprising a rotation support frame 125 coupled to an upper portion of the casing to support a vertical up and down rotation; Automatic welding carriage easy to adjust the length and angle of the welding torch, characterized in that comprising a. The method of claim 1, The lower fluid is an automatic welding carriage easy to adjust the length and angle of the welding torch, characterized in that any one selected from the bearing 151 or the ball joint 152. The method according to claim 1 or 2, A bearing accommodating part 121 is formed at a portion where an extension line of the front end part and the rear end part of the bent joint part 120 meets and accommodates the bearing 123 therein and is rotatably coupled to the rotation supporting frame 125. Automatic welding carriage for easy adjustment of length and angle of welding torch.

Images