KR101792146B1 - Welding Nozzle - Google Patents

Abstract

The welding nozzle according to the present invention includes a welding nozzle portion and an impurity barrier film wound around the welding nozzle portion, and the impurity barrier film is selectively removed so that impurities are not adhered to the welding nozzle portion.

Description

[0001] Welding Nozzle [

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a welding nozzle, and more particularly, to a welding nozzle in which an impurity barrier film is formed to prevent impurities generated during welding.

Generally, a welding apparatus generates heat to melt and weld a welded portion of an object.

At this time, impurities are generated on the welding part and fixed to the welding nozzle part, where the impurities are fixed to the inside and the outside of the welding nozzle part, so that welding can not be performed.

Therefore, in consideration of the fact that the life of the welding nozzle portion is shortened due to the impurities generated during welding, the conventional technique is used by ceramic coating the circumference of the welding nozzle portion. As a result, the phenomenon that the impurities are fixed to the nozzle is reduced, but the brittleness is weak and the unit cost is high, which causes a problem that the manufacturing cost increases.

Therefore, a method for solving such problems is required.

The present invention has been conceived to solve the problems of the prior art described above, and it is an object of the present invention to provide a method of removing an impurity shielding film wound in a tape shape inside and outside of a welding nozzle part, There is a purpose in seeking and proposing,

Therefore, the cost loss of replacing the welding nozzle part can be greatly reduced, and the productivity can be increased accordingly.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a welding nozzle including a welding nozzle portion and an impurity barrier film wound around the welding nozzle portion, wherein the impurity barrier film is selectively removed to prevent impurities from being adhered to the welding nozzle portion .

Further, the impurity barrier film may be wound on a part of the outer periphery of the welding nozzle part or a part of the inner periphery of the welding nozzle part.

The impurity barrier layer may be divided into a plurality of regions in the longitudinal direction or the width direction.

In addition, the impurity barrier layer may be formed with a perforated line along a plurality of divided regions to remove the adhered impurities.

The welding nozzle of the present invention for solving the above-mentioned problems has the following effects.

First, an impurity barrier film is formed around the inside and outside of the welding nozzle portion, thereby blocking impurities generated during welding.

Second, since the impurity barrier layer is wound around the circumference of the welding nozzle, when the impurities are fixed, a part of the impurity barrier layer is removed to remove the impurities.

Third, the impurity barrier layer is advantageous in that it is easy to remove only the part that is fixed due to the perforation line.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

FIG. 1 is a view illustrating a welding nozzle portion in which an impurity barrier layer is formed in a welding nozzle according to an embodiment of the present invention;
2 is a view showing a state where an impurity barrier layer is formed on an outer circumference of a welding nozzle portion in a welding nozzle according to an embodiment of the present invention;
3 is a view illustrating a state where an impurity barrier layer is formed on an inner circumference of a welding nozzle portion in a welding nozzle according to an embodiment of the present invention;
4 is a view showing a state in which a perforated line is formed in the impurity blocking layer in the welding nozzle according to the embodiment of the present invention, and a part of the impurity blocking layer is removed
5 is a view showing a state in which a plurality of perforated lines are formed parallel to each other in the impurity barrier layer in the welding nozzle according to an embodiment of the present invention, and a part of the impurity barrier layer is removed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

The welding nozzle according to the present invention can be practiced as follows.

FIG. 1 is a view showing a welding nozzle unit 100 provided with an impurity barrier layer 200 in a welding nozzle according to an embodiment of the present invention.

Referring to FIG. 1, a welding nozzle according to an embodiment of the present invention includes a welding nozzle unit 100 and an impurity blocking film 200.

Generally, an arc welder is a method in which electric power is applied between a workpiece and an electrode to cause an arc discharge to melt and weld the generated heat. A welding method using a consumable welding nozzle unit 100 serving as an electrode during arc welding generates an arc when welding is performed and is scattered to the outside in the form of small grains of molten metal to be positioned inside the welding nozzle unit 100 And is then cooled to provide impurities in the form of solid byproducts.

Therefore, in order to remove the impurities without replacing the welding nozzle unit 100, the impurity shielding film 200 is formed on the welding nozzle unit 100 in such a manner that the impurity shielding film 200 is wound on the impurity shielding film 200, A part of the selectively wound impurity blocking film 200 can be removed.

Next, the impurity blocking film 200 will be described in detail with reference to FIGS. 2 and 3. FIG.

2 and 3 are views showing a state where the impurity barrier layer 200 is provided on the outer periphery and the inner periphery of the welding nozzle unit 100 in the welding nozzle according to the embodiment of the present invention.

As shown in the figure, the impurity barrier layer 200 is provided along the circumference of the welding nozzle unit 100 where heat is generated.

The impurity barrier layer 200 has a shape that is wound around a part or the whole of the outer periphery of the weld nozzle unit 100 and can be wound in one direction by applying an adhesive on one surface.

Therefore, the shape in which the impurity barrier film 200 is wound on the periphery of the welding nozzle portion 100 can be similar to a method of removing a portion wound in the form of a plastic tape, which is generally easily accessible. .

2, the impurity barrier film 200 is formed in accordance with the shape of the welding nozzle part 100, adjacent to the end where heat is generated in the welding nozzle part 100.

The reason why the impurity barrier film is wound around the outer periphery of the welding nozzle part 100 is that impurities are scattered between the end of the welding nozzle part 100 where heat is generated during welding and the molten metal.

Therefore, the impurity barrier film 200 may be formed reflecting the position where the impurities are fixed in the welding nozzle unit 100 so that the impurities generated during the welding are not fixed to the welding nozzle unit 100.

In addition, an impurity blocking layer may be formed also around the inner circumference of the impurity blocking layer 200 for the above reasons.

Inside the welding nozzle unit 100, various inert gases such as carbon dioxide (CO 2) gas and argon (Ar) are sprayed in order to prevent oxidation of the molten portion at the welding position.

However, if the welding nozzle portion 100 is clogged and the inert gas can not flow smoothly, the entire surface of the portion to be melted in the welding rod can not be protected at the time of welding, so that a portion is exposed and the molten impurities are oxidized.

Accordingly, the impurity barrier layer 200 may be formed on the inner circumference of the weld nozzle part 100 in response to the case where the layer can not be discharged.

In this embodiment, the impurity shielding film 200 is wound around the outer periphery and a part of the inner periphery of the welding nozzle part 100, but the size of the impurity shielding film 200 can be sufficiently changed by those skilled in the art in order to prevent impurities from sticking.

In addition, although the shape of the welding nozzle unit 100 is formed radially around a hole through which heat is discharged, the shape and size of the welding nozzle unit 100 can be easily changed by those skilled in the art.

The impurity shielding film 200, which is wound on the inner and outer peripheries of the welding nozzle unit 100 as described above, may be formed by selectively removing impurities (e.g., impurities) generated in the welding nozzle unit 100, The impurities can be removed by removing a part of the blocking film 200.

Next, a mode in which the impurity blocking film is removed will be described with reference to FIGS. 4 and 5. FIG.

4 and 5 are views showing a state in which a perforated line L is formed in the impurity blocking layer 200 in a welding nozzle according to an embodiment of the present invention, and a part of the impurity blocking layer 200 is removed.

As shown in the figure, the impurity shielding film 200 is formed on the periphery of the welding nozzle part 100, and is formed in the longitudinal direction or the width direction of the welding nozzle part 100, is divided into at least one zone, A perforated line L can be formed to facilitate the operation.

The perforated line L is formed to remove the divided area. If the impurity is fixed to the impurity shielding film 200 and the welding can not be performed, a part of the impurity shielding film 200 may be removed along the perforated line L.

The shape of the perforated line L is formed such that at least one of the perforated line L is formed along the longitudinal direction of the impurity barrier layer 200 and the impurity barrier layer 200 can be removed in the direction in which the perforated line L is wound. The perforated line L may be formed along the perforated line L to be partially removed.

The shape of the perforated line L formed in the impurity shielding film 200 as described above is not limited to the shapes shown in FIGS. 4 and 5, and the shape and the shape of the impurity shielding film 200 It is of course not limited.

The impurity shielding film 200 is formed on the inner circumference of the welding nozzle part 100 and is divided into at least one region to form a perforated line L. The impurities are fixed to the inner circumference of the welding nozzle part 100 Impurities can be removed from the weld nozzle unit 100 in a manner to remove the impurity barrier film 200 formed on the inner periphery.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100: welding nozzle unit 200: impurity blocking film
L: perforated line

Claims (4)

Welding nozzle portion; And
An impurity barrier film wound around the inside and outside of the welding nozzle portion and divided into a plurality of zones in a longitudinal direction or a width direction; / RTI >
Wherein the impurity blocking film is formed such that a part of the impurity blocking film adhered to the impurity blocking film is removed when the impurity is fixed.
delete delete The method according to claim 1,
The impurity blocking film may be formed,
A perforated line is formed along a plurality of divided sections to remove the adhered impurities.
Welding nozzle.

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