JPH0342153B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a nozzle cleaner for removing spatter and the like adhering to the periphery of the nozzle of a welding torch.

(Prior Art and its Problems) In arc welding, particularly in consumable gas-shielded arc welding, spatter is deposited around the nozzle at the tip of the welding torch during welding. If a large amount of this spatter adheres to the area around the nozzle,
The flow of the shielding gas will be disturbed and welding defects such as blowholes will occur. Therefore, it becomes necessary to remove spatter and the like attached around the nozzle as described above.

Currently, the above spatter can be removed by using a nozzle cleaner with an elastic body attached around the solid cleaner body, removing the nozzle from the welding torch, holding the nozzle, and inserting the This is done by bringing the peripheral part into sliding contact with the outer peripheral part of the elastic body of the nozzle cleaner. The reason why it is necessary to remove the nozzle from the welding torch in this way is because with conventional metal nozzles, spatter is firmly attached to the nozzle, and a large pressing force is required to remove the spatter. be.

By the way, in recent years, as described in Japanese Patent Application No. 59-153842, ceramic nozzles have come into use. Since the spatter does not adhere to the surface, spatter can be removed with a relatively small pressing force. Therefore, there has been a desire to remove spatter while the nozzle remains attached to the welding torch, rather than removing the nozzle from the welding torch as in the past. However, with conventional nozzle cleaners, when the cleaner is inserted inside the nozzle attached to the welding torch, the tip of the cleaner interferes with the welding tip and welding wire located inside the nozzle. It was difficult to remove spatter and the like while it was attached to a welding torch.

This invention was made in order to solve the above-mentioned conventional drawbacks, and its main purpose is to remove spatter etc. while the nozzle remains attached to the welding torch without removing it from the welding torch. It is an object of the present invention to provide a nozzle cleaner that can prevent nozzle damage due to operational errors.

(Means and effects for solving the problem) Therefore, the nozzle cleaner of the present invention includes a cleaner body having a cylindrical part opened at the tip side, and an elastic body attached to the outer peripheral part of this body. The opening of the cylindrical body has an inner diameter into which the tip of the welding tip can fit, and the elastic body is composed of a plurality of band-shaped elastic pieces extending in the axial direction of the cylindrical part. The central part of the elastic band is curved outward, and this curved part serves as a sliding contact part that slides into contact with the inner circumference of the nozzle.Furthermore, one end of the elastic strip is fixed to the cleaner body, and the other end is fixed to the cleaner body. , is characterized in that it is fixed to a ring member that is loosely fitted to the outer periphery of the cleaner body.

As a result of the above, when the nozzle cleaner is inserted inside the nozzle with the nozzle attached to the welding torch, the welding wire and welding tip located inside the nozzle will fit into the cylindrical part of the cleaner body. The welding wire and chips do not interfere with the cleaner body as in the past.
Therefore, it is possible to remove spatter from the nozzle while the nozzle remains attached to the welding torch. In addition, if the pressing force acting on the welding nozzle from the cleaner body is too large, the band-shaped elastic piece will be greatly deformed by the sliding of the ring member, preventing the excessive pressing force from directly acting on the nozzle. For example, when removing spatter from a ceramic nozzle, it is possible to prevent the nozzle from being damaged due to excessive pressing force.

Further, in a preferred embodiment of the nozzle cleaner of the present invention, the cylindrical portion has a notch extending in the axial direction at its tip.

As a result, at the same time that spatters and the like are removed from the inner circumference of the nozzle, it is also possible to remove spatters and the like from the outer circumference of the welding tip through this notch.

(Example) Next, specific examples of the nozzle cleaner of the present invention will be described in detail with reference to the drawings.

First, in FIGS. 1 and 2, 1 is a cleaner main body, and this main body 1 has a cylindrical cylindrical portion 2 at its tip. The cylindrical portion 2 has an opening at its tip, and V-shaped notches 3 extending in the axial direction of the cylindrical portion 2 are formed around this opening. This notch 3...3
are arranged at equal intervals in the radial direction of the cylindrical portion 2, and have relatively sharp edges formed at their edges. Further, the rear part of the cleaner main body 1 is made into a gripping part 4, and a gripping rod 5 that extends through the main body 1 in the radial direction is fitted into the gripping part 4. The cleaner body 1 can be rotated by gripping it. Note that 6 is a clip, which is used by the operator when storing the nozzle cleaner in, for example, a breast pocket.

On the other hand, an elastic body 7 is attached to the outer periphery of the cylindrical portion 2, and the elastic body 7 in the case shown in the figure consists of four band-shaped elastic pieces 8...8. Each of the band-shaped elastic pieces 8 has a central portion curved so as to bulge outward in the radial direction of the cylindrical portion 2, and a distal end portion 8a of the cylindrical portion 2. It is fixed to the outer periphery by welding or the like. A ring member 9 is slidably disposed on the outer periphery of the cylindrical portion 2, and the rear end 8b of the band-shaped elastic piece 8 is fixed to the outer periphery of the ring member 9. That is, when a force is applied to the band-shaped elastic piece 8 in a direction to extend the elastic piece 8, the ring member 9 slides on the cylindrical part 2, thereby facilitating the extension of the band-like elastic piece 8. There is a reason. A pair of guide grooves 11, 11 are formed in the ring member 9, which are open at the distal end thereof, and a pair of protrusions provided on the outer circumference of the cylindrical portion 2 are provided in the notch grooves 11, 11. 12, 12 are fitted. The functions of the guide grooves 11, 11 and the protrusions 12, 12 will be described later.

Next, we will explain the procedure for removing spatter from welding nozzles using the above-mentioned nozzle cleaner. In Figures 1 and 3, A indicates the welding nozzle and B indicates the welding tip. There is. First, an operator grasps the grip part 4 and inserts the tip of the nozzle cleaner into the nozzle A. In this case, the elastic piece 8 comes into contact with the inner periphery of the nozzle A, and the tip of the tip B fits into the cylindrical part 2 of the cleaner body 1.
Next, from this state, the nozzle cleaner is pushed into the nozzle A while being rotated. As a result, spatter on the inner periphery of the nozzle A is removed by the sliding contact of the band-shaped elastic piece 8, and at the same time, the outer periphery of the tip B is removed by the notches 3...3 provided at the tip of the cylindrical portion 2. This will also remove the spatter in the area. When the spatter on the inner periphery of the nozzle A is removed as described above, the band-shaped elastic pieces 8...8
It comes into direct contact with the inner peripheral surface of the nozzle A, and the pushing force of the nozzle cleaner acts as a large pushing force against the nozzle A. On the other hand, since the rear end portion 8b of the band-shaped elastic piece 8 is configured to be able to move relatively freely via the ring member 9, the ring member 9
Along with the sliding, the band-shaped elastic pieces 8...8 also expand, making it possible to prevent the above-mentioned excessive force from acting on the nozzle A. In addition, the band-shaped elastic piece 8
Since the rear end portion 8b is fixed to the ring member 9, when the nozzle cleaner is rotated to remove spatter as described above, the band-shaped elastic piece 8 tends to twist due to the resistance force. This twisting is prevented by the guide grooves 11, 11 and the protrusions 12, 12.

According to the nozzle cleaner described above, nozzle A
When removing spatters, the welding tip B and wire located inside will fit into the cylindrical part 2 of the nozzle cleaner. It is possible to remove the following.

In addition, as described above, the notch 3 is provided at the opening of the cylindrical portion 2.
...3 is provided, it is possible to simultaneously remove spatters, etc. on the inner circumference of nozzle A, and also to remove spatters, etc. on the outer circumference of welding tip B, using these notches 3...3. Become.

Further, as described above, the elastic body 7 is connected to the band-shaped elastic piece 8...
8, the cleaner body 1
When the pressing force acting on the welding nozzle A is too large, the band-shaped elastic pieces 8...8 deform and prevent the excessive pressing force from directly acting on the nozzle A. It is possible to prevent damage to the nozzle A etc. due to

Further, when a structure is adopted in which one end of the band-shaped elastic pieces 8...8 is fixed to the ring member 9 as described above, the band-shaped elastic pieces 8...8 are attached to the ring member 9.
It becomes possible to make a large displacement by the sliding movement of the nozzle A, and it becomes possible to more effectively prevent the nozzle A from being damaged due to the excessive pressing force as described above.

Although one embodiment of the nozzle cleaner of the present invention has been described above, the nozzle cleaner of the present invention is not limited to the above embodiment, and can be implemented with various modifications within the scope of the purpose of the present invention. It is possible.

(Effects of the Invention) The nozzle cleaner of the present invention is configured as described above. Therefore, when removing spatter on the inner circumference of the nozzle, the nozzle cleaner of the present invention Since the welding tip and wire fit into the cylindrical part of the cleaner body, there is no interference between the tip of the cleaner body and the welding tip as in the conventional case, and therefore, the nozzle can be attached to the welding torch. It becomes possible to remove spatter etc. while the device is still attached to the device.

In addition, if the pressing force acting on the welding nozzle from the cleaner body is too large, the band-shaped elastic piece will be greatly deformed by the sliding of the ring member, preventing the excessive pressing force from directly acting on the nozzle. For example, when removing spatter from a ceramic nozzle, it is possible to prevent the nozzle from being damaged due to excessive pressing force.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the nozzle cleaner of the present invention, FIG. 2 is a vertical cross-sectional view taken along the line of the previous figure, and FIG. 3 is a vertical cross-sectional view showing the nozzle cleaner in use. 1...Cleaner body, 2...Cylindrical part, 3...
Notch, 7... Elastic body, 8... Band-shaped elastic piece, 9...
...Ring member, A...nozzle, B...chip.

Claims (1)

[Scope of Claims] 1. A cleaner main body having a cylindrical part opened on the distal end side, and an elastic body attached to the outer circumference of the main body, the opening of the cylindrical body being connected to the distal end of the welding tip. The elastic body is composed of a plurality of band-shaped elastic pieces extending in the axial direction of the cylindrical part, and the center part of the band-shaped elastic pieces is curved outward so that the elastic body can be fitted into the cylindrical part. The curved portion is a sliding contact portion that slides on the inner periphery of the nozzle, and one end of the band-shaped elastic piece is fixed to the cleaner body, and the other end is a ring member that is loosely fitted to the outer periphery of the cleaner body. A nozzle cleaner characterized by being fixed to. 2. The nozzle cleaner according to claim 1, wherein the cylindrical portion has a notch extending in the axial direction at its distal end.