JP2014054654A - Welding torch auxiliary tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding torch auxiliary tool which allows a usually used welding torch to be easily attached, and which can cope with various welding situations with lower costs.SOLUTION: A welding torch auxiliary tool includes: an operation bar having a torch holding part configured to detachably attach a welding torch to a front end part of the torch holding part, and a lever pivotally attached to a hand part; a link that is disposed at the torch holding part and turns on/off a torch switch of the welding torch; and a wire that connects the link and the lever so that the link is operated by the lever.

Description

  The present invention relates to an auxiliary tool for a welding torch for use in manual welding in welding work such as shipbuilding, steel structures, and bridges.

  An example of a conventional welding operation is shown in FIG. For example, in the case of welding in an upward posture as shown in FIG. 4A, the operator raises the arm and welds, so the arm is tired and cannot be welded continuously for a long time. In a welding operation in a narrow area as shown in FIG. 4B, an operator must enter the narrow area and reach out to the welding area to perform welding. descend. In addition, when there is an overhanging member or the like as shown in FIG. 4C, it is necessary to get on it if it is not reachable, or to work after setting the scaffolding, which may cause safety problems and increase the setup. The problem comes out.

  In view of the welding situation as described above, various ideas and proposals have been made for convenience in using a welding torch. For example, Patent Document 1 discloses a welding torch in which the length of a torch body having a gas supply nozzle at the tip is made extendable. Further, Patent Document 2 discloses a welding torch that is mounted on an industrial robot, but whose torch body is bendable. In addition, general commercially available welding torches are provided with different torch body lengths and bending angles.

JP 2010-214455 A JP 2003-251466 A

However, in order to cope with various welding situations as shown in FIG. 4, when the length and bending angle of the torch body are fixed like a commercially available welding torch, the welding torch must be replaced each time. Troublesome and costly.
The welding torch of Patent Document 1 has the same problem because the length of the torch body is limited.
In the technique of Patent Document 2, not only the industrial robot itself, which is an automatic machine, is expensive, but also manual welding rather than automatic welding is easier and more convenient for welding operations such as shipbuilding, steel structures, and bridges. There are many cases.

  The present invention has been made in view of the above situation, and provides an auxiliary tool for a welding torch that can be easily mounted with a welding torch that is normally used, and that can cope with various welding situations at low cost. It is an object.

  An auxiliary tool for a welding torch according to the present invention is provided on the torch holding part, an operation rod having a torch holding part for detachably attaching a welding torch to a tip part and a lever pivotally attached to a hand part, A link for turning on / off a torch switch of a welding torch, and a wire for connecting the link and the lever so that the link is operated by the lever.

  Further, in the welding torch auxiliary tool according to the present invention, the mounting position of the lever mounted on the hand portion can be adjusted, and the operation rod is bent so that it can be bent at an intermediate portion. These rods are pivotally attached to each other and can be fixed at an arbitrary bending angle.

  Since the welding torch auxiliary tool according to the present invention is configured as described above, the existing welding torch can be easily mounted, and can cope with various welding situations at low cost.

The block diagram of the auxiliary tool for welding torches concerning Embodiment 1 of this invention. The block diagram of the auxiliary tool for welding torches concerning Embodiment 2 of this invention. The figure which shows the fixing method of the refractive part of the operating rod of the auxiliary tool for welding torches shown in FIG. Explanatory drawing which shows the conventional welding condition.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a welding torch auxiliary tool according to the present invention will be described with reference to the drawings. What is common in each embodiment of the present invention is indicated by the same reference numeral unless otherwise specified.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram (schematic side view) of a welding torch auxiliary tool 10 according to Embodiment 1 of the present invention, and also shows a state where an operator is welding in an upward posture.
The welding torch auxiliary tool 10 is configured such that, for example, an existing welding torch 20 is attached to the tip of the operation rod 11 and welding can be performed by hand operation.
The operation rod 11 is configured using a lightweight material such as an aluminum pipe. A resin pipe may be used. A torch holding part 12 for mounting the welding torch 20 is provided at the tip of the operation rod 11.
The torch holding part 12 is formed in a rectangular tube shape, and the torch holder part 21 of the welding torch 20 is accommodated and held in this rectangular tube part. In addition, the torch holding part 12 is provided with a lid or a band (not shown), so that the welding torch 20 is detachable.
Further, a substantially L-shaped link 13 is pivotally attached to the side surface of the torch holding portion 12 by a pin 14. The link 13 turns the torch switch 22 of the welding torch 20 on and off by turning the tip portion 13a.

  On the other hand, a lever 15 is pivotally attached to a hand portion of the operation rod 11 by a pin 16. The lever 15 and the other end 13 b of the link 13 are connected by a wire 17. The lever 15 rotates the link 13 connected by the wire 17 by hand operation. Further, the length of the welding torch auxiliary tool 10 can be adjusted by loosening the bolt 23 so that the attachment position of the lever 15 with the operating rod 11 can be freely adjusted. In order to adjust the mounting position of the lever 15, the length of the wire 17 can be adjusted, and is adjusted by either the other end portion 13 b of the link 13 or the lever 15 portion. Thereby, the worker can take a posture that facilitates the welding work. A spring (not shown) for returning the link 13 or the lever 15 to the original position is attached to the link 13 or the lever 15.

  Next, the usage method and operation | movement of the auxiliary tool 10 for welding torches comprised as mentioned above are demonstrated.

A welding torch 20 suitable for the welding location is attached to the torch holding portion 12 at the tip of the operation rod 11. Further, the lever 15 is set at an appropriate position, and the length of the wire 17 is adjusted.
Thus, the preparation before starting welding is completed.

  Next, when the front end of the welding torch 20 is pointed at the welding location and the lever 15 at the proximal portion of the operating rod 11 is gripped, the lever 15 rotates about the pin 16 toward the operating rod 11 in the clockwise direction in FIG. Since the link 13 connected to the wire 17 rotates about the pin 14 counterclockwise in FIG. 1, the torch switch 22 is turned on by the tip 13 a of the link 13. As a result, the welding torch 20 is energized, the welding wire and the shield gas are automatically fed from the tip of the welding torch 20, and an arc is generated between the welding wire and the workpiece to be welded. can do. When stopping the welding, if the gripping force on the lever 15 is released, the lever 15 and the link 13 are returned to their original positions by a spring (not shown), so the torch switch 22 is turned off and the energization to the welding torch 20 is cut off. The welding is stopped.

  As described above, according to the first embodiment, the welding work can be performed in an easy posture. For example, as shown in FIG. 1, in the case of welding in an upward posture, it is possible to perform welding with the arm lowered even at a place where the arm had to be raised to reduce the burden on the operator. In addition, the continuity of the welding operation can be maintained. Further, since the welding torch auxiliary tool 10 has a simple structure, it can be manufactured at low cost, and can be replaced with the existing welding torch 20 as appropriate according to the welding location, so that various welding can be performed at low cost. Can be adapted to the situation.

Embodiment 2. FIG.
FIG. 2 is a configuration diagram (schematic side view) of the welding torch auxiliary tool 10 according to the second embodiment of the present invention, and FIG. 3 is a diagram showing the bending of the operation rod 11 of the welding torch auxiliary tool 10 shown in FIG. It is a figure which shows the fixing method of a part.

  The welding torch auxiliary tool 10 according to the second embodiment has basically the same configuration as that of the first embodiment except that the operation rod 11 is configured to be bent at the middle portion of the two rods. Here, the differences will be mainly described, and the same reference numerals are given to the portions common to the first embodiment, and the description will be omitted.

As shown in FIGS. 2 and 3, the operation rod 11 is bent at the intermediate portion. That is, the upper operation rod 11a and the lower operation rod 11b are pivotally attached by, for example, a bolt 11c, and the lower operation rod is fixed to the upper operation rod 11a by tightening and fixing the bolt 11c with a wing nut 11d. 11b is held at an arbitrary bending angle θ. In this example, the movable range is −45 ° ≦ θ ≦ 45 °.
In addition, a wire guide 18 that refracts and guides the wire 17 that connects the link 13 and the lever 15 is provided in the refracting portion of the operation rod 11.

  Although not shown in FIG. 1, a spring (torsion spring) 19 that urges the link 13 in a direction in which the distal end portion 13 a of the link 13 separates from the torch switch 22 of the welding torch 20 is provided in the torch holding portion 12. Yes.

  According to the second embodiment, since the operation rod 11 is bent at the intermediate portion, it is possible to weld even a place where it is difficult to weld with the straight operation rod 11, which improves the convenience and efficiency of welding work. To contribute.

  As described above, by using the welding torch assisting tool 10 according to the present invention, it was possible to exert an effect in reducing heavy reinforcement work and improving continuity of welding work.

DESCRIPTION OF SYMBOLS 10 Welding torch auxiliary tool 11 Operation rod 11a Upper operation rod 11b Lower operation rod 11c Bolt 11d Wing nut 12 Torch holding part 13 Link 13a Tip part 13b Other end part 14 Pin 15 Lever 16 Pin 17 Wire 18 Wire guide 19 Spring 20 Welding Torch 21 Torch holder 22 Torch switch 23 Bolt

Claims (3)

An operating rod having a torch holding part for detachably attaching a welding torch to the tip part and a lever pivotally attached to the hand part;
A link provided in the torch holding part, for turning on and off a torch switch of the welding torch;
A wire connecting the link and the lever so that the link is operated by the lever;
A welding torch auxiliary tool characterized by comprising:   The auxiliary tool for welding torch according to claim 1, wherein an attachment position of the lever attached to the hand portion can be adjusted. The welding according to claim 1 or 2, wherein the operation rod is configured such that two rods are pivotally attached to each other so as to be bent at an intermediate portion and can be fixed at an arbitrary bending angle. Auxiliary tool for torch.

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