JPS5940147Y2 - welding torch - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a welding torch having multiple electrodes.

In recent years, welding using multiple electrodes has been attracting attention from various quarters.

However, multi-electrode welding is often applied to automation, and the welding torches used are specialized for the purpose of the work.

Such specialized welding torches are fixed depending on the welding operation to which they are applied, such as multiple electrodes in series or multiple electrodes in parallel, and therefore different welding torches are required for different welding operations.

In particular, with manual welding torches, the part where you hold the torch by hand and the electrode fixing part are integrated, so in order to fully utilize the multi-electrode feature, you have to work in a difficult posture or the Additionally, several welding torches with different electrode positions are required, which is cumbersome.

In view of the above points, this invention aims to provide a welding torch in which multiple electrodes can be easily set in series or parallel, and welding can be performed easily.

This invention is characterized in that the entire part that fixes the electrode at the tip rotates around the torch body.

Figure 1 is a partially sectional side view of an embodiment of a small and lightweight manual welding torch incorporating a rotation mechanism according to this invention, Figure 2 is a front view of Figure 1 seen from the shield cap side, and Figure 3 is It is an explanatory view when welding a structure using a welding torch.

In the figure, 1 is a torch body, 2 is an electrode fixing part rotatably fitted to the torch body 1, and an electrode nozzle 3,
3 is fixed.

In addition, since the electrode nozzles 3, 3 are twisted by the rotation of the electrode fixing part 2, they are connected to a flexible cable.

4 is a chip attached to the electrode nozzle 3, 5 is a shield cap attached to the outer periphery of the electrode fixing part 2, 6 is a spring inserted between the electrode fixing part 2 and the torch body 1, and 7 is a rotating fixing part. For example, the torch main body 1 and the electrode fixing part 2 are locked in a predetermined position by engagement of claws, and many other means can be considered as the engagement means, such as providing an uneven tooth profile on the contact surface.

When changing the position of the tip 4, when the electrode fixing part 2 is pushed against the torch body 1, the engagement between the torch body 1 and the electrode fixing part 2 at the rotation fixing part 7 is disengaged, and the electrode fixing part 2 is held in that state. If they are made coaxial and at a predetermined position, the rotary fixing part 7 engages with the force of the spring 6, and the tip 4 is fixed at a predetermined position with respect to the torch body 1.

Note that the number of chips 4 is not limited to two as illustrated.

If a wide weld bead with shallow penetration is required, the electrodes must be parallel to the welding direction.

For example, assuming that the structure 8 in FIG. 3 requires a wide weld bead with shallow penetration, a conventional welding torch suitable for welding the weld line 9 would be used to weld the weld line 10. , the worker 11 has to weld in a difficult posture with the body twisted.

However, if the welding torch of this invention is used, by rotating the electrode fixing part 2 by, for example, 90 degrees as described above, the series of the tips 4 can be changed to parallel, making it possible to weld in the same position, making it possible to weld in a wide range. A weld bead with shallow penetration can be easily obtained.

According to this invention, it is easy to change the position of the tip in a multi-electrode welding torch, and when a wide bead is required or high-speed welding is required, by rotating the electrode identification part, it is possible to weld a single piece. You can deal with it with a torch.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view showing an embodiment of a welding torch according to this invention, Fig. 2 is a front view of Fig. 1 seen from the shield cap side, and Fig. 3 is a welding torch used to construct a structure. It is an explanatory view at the time of welding. 1... Torch, 2... Electrode fixing part, 3
... Electrode nozzle, 4... Chip, 5.
...Shield cap, 7 ... Rotation fixed part, 8 ... Structure, 9 ... Welding line, 1
0...Welding line, 11...Worker.

Claims (1)

[Scope of utility model registration request] In a welding torch having multiple electrodes, an electrode fixing part to which an electrode nozzle is attached is rotatably attached to the torch main body, and the electrode fixing part and the torch main body can be locked by a rotating fixing part provided between them, and the torch A welding torch characterized by a spring inserted between the main body and the electrode fixing part.