JP2002103042A - Welding torch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding torch to which an electrode is easily attached and fixed in the state that the tip of the electrode is pointed to a desired direction when attaching the electrode. SOLUTION: In the state that the tip of the electrode 13 which is held to a collet chuck 15 is pointed to the desired direction and the rotation of the collet chuck 15 is controlled by rotating the part 21 of the shaft member, the collet chuck 15 is screwed on the tip of the shaft member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a welding torch,
In particular, the present invention relates to an electrode rod that can be easily set in a state where the electrode rod is oriented in a desired direction.

[0002]

2. Description of the Related Art Conventionally, a component called a collet chuck has been used to hold an electrode rod. FIG. 6 shows the configuration. FIG. 6 is a cross-sectional view showing the configuration of the collet chuck, which is composed of an adapter 101 and a chuck 103. The chuck 103 includes an inner shaft member 105 arranged on the inside and an outer sleeve 107 arranged on the outside. The inner shaft member 105 and the outer sleeve 107 are formed with through holes 111 through which the electrode rods 109 pass.

In the above configuration, the male screw portion 105a of the inner shaft member 105 is screwed into the female screw portion 101a of the adapter 101 with the electrode rod 109 inserted into the through hole 111. Then, when the inner shaft member 105 is screwed to some extent, the upper end surface 107a of the sleeve 107 comes into contact with the lower end surface 101b of the adapter 101. Thereby, movement and rotation of the sleeve 107 in the axial direction are restricted. In this state, by further screwing the inner shaft member 105, only the inner shaft member 105 moves and rotates in the axial direction. Thereby,
Through-hole 111 on inner shaft member 105 side and outer sleeve 10
A gap is generated between the through hole 111 on the seventh side. The electrode rod 109 is fixed by this displacement.

[0004]

According to the above-mentioned conventional configuration, there are the following problems. That is, in the case of the mounting structure of the electrode rod 109 using the conventional collet chuck, the direction in which the tip of the electrode rod 109 is fixed is arbitrary (random). It is good when the direction of the tip of the electrode rod 109 does not matter in particular, but when it does matter, there is a problem that the adjustment is extremely difficult.

The present invention has been made based on such a point, and an object of the present invention is to easily mount and fix an electrode rod in a state where the tip of the electrode rod is oriented in a desired direction. It is to provide a welding torch that can be made.

[0006]

In order to achieve the above object, a welding torch according to a first aspect of the present invention comprises a welding torch main body, and a shaft member rotatably provided on the welding torch main body and having a screw portion at a tip. And a collet chuck having a threaded portion that holds the electrode rod and is screwed into the threaded portion of the shaft member, and directs the tip of the electrode rod held by the collet chuck in a desired direction, By rotating the shaft member in a state where the rotation of the collet chuck is regulated, the collet chuck is screwed and joined to the tip thereof.

That is, the tip of the electrode rod held by the collet chuck is oriented in a desired direction, and the collet chuck is screwed to the tip by rotating the shaft member while the rotation of the collet chuck is regulated. Combination
Bonding is performed, whereby the direction of the tip of the electrode rod is set to a desired direction.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the case of this embodiment, as shown in FIGS. 1 and 2, a case where a plurality of hollow members 3 are erected on the substrate 1 and the lower end of the hollow member 3 is welded to the substrate 1 is exemplified. To show. In this case, the welding torch 5 is placed in the narrow space between the plurality of hollow members 3.
In such a state, the desired welding operation is performed.

The welding torch 5 has a torch body 7 at first. A torch body 9 is attached to the torch body 7. A rotating operation mold 11 is fixed to the torch body 9. At the tip of the torch body 9, a male screw portion 9a is provided.

On the other hand, there is a collet chuck 15 for holding the electrode rod 13. The collet chuck 15 includes an adapter 17 and a chuck 19. The chuck 19 includes an inner shaft member 21 and an outer sleeve 23. The inner shaft member 21 and the outer sleeve 23 are formed with through holes 25 through which the electrode rods 13 pass.

Then, the inner shaft member 21 of the chuck 19 is inserted into the adapter 17 with the electrode rod 13 passed through the through hole 25.
Into the female screw part 17a on the side. Thereby,
While the outer sleeve 23 is in contact with the adapter 17 to restrict further movement, the inner shaft member 21 is further screwed into the adapter 17 side. Thereby, the inner shaft member 21 side and the outer sleeve 23
A deviation occurs from the side, and the electrode rod 13 is thereby fixed.

The adapter 17 of the collet chuck 15 has another female thread 1 on the side opposite to the female thread 17a.
7b is provided. On the other hand, a male screw portion 9a is formed at the tip of the torch body 9 already described. Then, this male screw portion 9a is connected to the female screw portion 1 of the adapter 17 described above.
The collet chuck 15 holding the electrode rod 13 is attached to the tip of the torch body 9 by screwing the collet chuck 7 into the torch body 9.

At this time, the collet chuck 15 is held with the tip of the electrode rod 13 directed in a predetermined direction, and the mold 11 fixed to the torch body 9 is rotated in this state. As a result, the torch body 9 rotates, and the collet chuck 15 is left as it is.
It will be lifted to the side and fixed.

The operation will be described based on the above configuration. As shown in FIG. 5, first, the electrode rod 13 is attached and fixed to the collet chuck 15. That is, the electrode rod 13 is inserted into the through hole 25, and in this state, the inner shaft member 21 on the chuck 19 side is screwed into the female screw portion 17a on the adapter 17 side. Then, the outer sleeve 23 on the chuck 19 side
Then, the inner shaft member 21 is further screwed in a state in which the inner shaft member 21 comes into contact with the adapter 17 so that the movement thereof is restricted. As a result, only the inner shaft member 21 on the chuck 19 side moves, so that a gap occurs between the inner shaft member 21 side and the outer sleeve 23 side in the through hole 25. The occurrence of this displacement fixes the electrode rod 13.

Next, the collet chuck 15 holding the electrode rod 13 is attached to the tip of the torch body 9. At this time, the collet chuck 15 is held with the tip of the electrode rod 13 directed in a predetermined direction, and the mold 11 fixed to the torch body 9 is rotated in this state. That is,
The torch body 9 is rotated while the rotation of the collet chuck 15 is restricted. As a result, the torch body 9 rotates, and the collet chuck 15 is pulled up and fixed to the torch body 9 while keeping the same.

According to the present embodiment, the following effects can be obtained. That is, the electrode rod 13 can be easily attached in a state where the tip is oriented in a desired direction. This is because the collet chuck 15 is screwed into the tip of the torch body 9. At this time, the tip of the electrode rod 13 held by the collet chuck 15 is directed in a desired direction. This is because if the rotation of the collet chuck 15 is restricted, the collet chuck 15 can be pulled up and attached to the torch body 9 as it is.

The present invention is not limited to the above embodiment. The configuration of the welding torch is not limited to the illustrated one, but can be applied to various types. Further, the collet chuck is not particularly limited.

[0018]

As described in detail above, according to the welding torch according to the present invention, the tip of the electrode rod held by the collet chuck is directed in a desired direction, and the rotation of the collet chuck is restricted. By rotating the member side, the collet chuck is screwed to the end thereof, so that the direction of the end of the electrode rod can be set in a desired direction.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, and is a plan view showing a configuration of a welding device arranged between a plurality of pipes for performing welding.

FIG. 2 is a diagram showing an embodiment of the present invention.
It is a II sectional view.

FIG. 3 is a view showing one embodiment of the present invention, and is a front view of a welding device.

FIG. 4 is a diagram showing an embodiment of the present invention, and FIG.
FIG.

FIG. 5 is a diagram illustrating an embodiment of the present invention, and is a diagram for describing an operation.

FIG. 6 is a cross-sectional view showing a configuration of a collet chuck used for explaining a conventional example.

[Explanation of symbols]

 9 Torch Body 9a Male Thread of Torch Body 13 Electrode Rod 15 Collet Chuck 17 Adapter 19 Chuck 21 Inner Shaft Member 23 Outer Sleeve 25 Through Hole

Claims (1)

[Claims] 1. A welding torch main body, a shaft member rotatably provided on the welding torch main body and having a screw portion at a distal end, and a screw portion holding an electrode rod and screwing with a screw portion of the shaft member. A collet chuck provided with the collet chuck, the tip of the electrode rod held by the collet chuck is directed in a desired direction, and the tip of the shaft member is rotated by rotating the shaft member while the rotation of the collet chuck is regulated. A welding torch characterized in that the collet chuck is screwed and joined to the torch.