KR102058543B1 - A welding purge jig having a vertical spray gas discharge part - Google Patents

Abstract

The present invention relates to a jig for welding purge having a vertical injection gas discharge part. More specifically, the present invention relates to the jig for welding purge having the vertical injection gas discharge part comprising: a body part inserted inside a welding material; a gas inlet part formed at one end of the body part, into which an inert gas is introduced; and a gas discharge part formed at the other end of the body part and formed such that the inert gas is injected perpendicular to an axis of the welded material. Therefore, the present invention has an effect of reducing a consumption of inert gas.

Description

A welding purge jig having a vertical spray gas discharge part

The present invention relates to a welding purge jig provided with a vertical injection gas discharge, and more particularly, to form a back bead on the back side of the welding surface during butt welding and inert to the inside of the welded material to prevent oxidation. In the gas injection, the vertical injection gas discharge part which can minimize the use of inert gas while improving the efficiency of oxidation prevention of the welding part by allowing the vertical injection directly to the welding part while being inserted into the material to be welded. It is related with the welding purge jig provided.

In general, the back bead (bead) is a bead formed on the back side of the butt weld when welding the weld surface of the welding site, such that the back bead is formed in the uncomfortable part, such as the inside of the pipe It increases the welding efficiency.

In addition, when welding a pipe, a purge operation is performed. This purge operation is performed to reduce the occurrence of welding defects by filling an inert gas so that oxygen does not remain inside the pipe to prevent oxidation of the back bead. It is a very important task to increase the efficiency of welding.

On the other hand, when performing welding that requires a purge operation, (a) blocking the ends of the pipes so as not to open, (b) mounting the blocked pipes to the chuck (c) blocked It is necessary to mount a hose for ejecting inert gas at one end of both ends, and (d) to allow the inert gas to be filled inside the pipe and then rotate the chuck to perform the welding operation.

However, such a method has a problem in that it is impossible to deliver an inert gas directly to the welding site, and when both ends of the pipe are to be welded, the pipe must be rotated in the opposite direction to be fixed to the chuck. Since the steps (a) to (d) need to be performed again, there is a problem in that the work efficiency is reduced and the productivity is reduced.

In the present invention, in order to solve the above problems, it is possible to minimize the use of inert gas while improving the efficiency of the oxidation prevention of the welded portion by being able to be directly vertically sprayed on the welded portion in the state of being inserted into the welded material, The present invention proposes a welding purge jig equipped with a vertical injection gas discharge part capable of reducing the welding work step and improving productivity by improving work efficiency.

Korean Utility Model Publication No. 20-2013-0002999 (published: 2013.05.22.) Korea Patent Publication No. 10-1499799 (Registration Date: 2015.03.02.)

Accordingly, the present invention has been made to solve the above problems,

The present invention is to provide a gas discharge portion so that the inert gas is directly injected to the welded portion of the welded portion in the body portion inserted into the welded material to discharge the inert gas more efficiently by vertical injection which can prevent oxidation of the back bead An object of the present invention is to provide a welding purge jig provided with a gas discharge part.

In addition, in the present invention, in forming the size, arrangement, and the like of the discharge holes included in the gas discharge part, the inert gas can be directly injected to the welding site, and the consumption of the inert gas can be reduced, so that the welding is more efficient. An object of the present invention is to provide a welding purge jig provided with a vertical injection gas discharge portion capable of performing.

Welding purge jig provided with a vertical injection gas discharge unit according to the present invention for achieving this object,

In one preferred embodiment of the present invention, the body portion is inserted into the interior of the welded material; A gas inlet formed at one end of the body and into which an inert gas is introduced; And a gas discharge part formed at the other end of the body part and configured to spray the inert gas perpendicularly to the axis of the welded material.

In addition, in one preferred embodiment of the present invention, the gas discharge portion is characterized in that formed in a position corresponding to the welding portion of the welded material.

In addition, in one preferred embodiment of the present invention, the gas discharge portion comprises at least one discharge hole formed along the outer periphery of the body portion.

In addition, in one preferred embodiment of the present invention, the diameter of the discharge hole is characterized in that formed in the size of 0.1 to 0.5mm.

In addition, in a preferred embodiment of the present invention, the separation distance along the outer circumferential direction of the body portion of the discharge hole is characterized in that 1 to 5mm.

In addition, in one preferred embodiment of the present invention, the discharge hole is characterized in that formed in 1 to 5 rows along the axial direction of the body portion.

In addition, in a preferred embodiment of the present invention, the separation distance along the axial direction of the body portion of the discharge hole is characterized in that 1 to 3mm.

In addition, in a preferred embodiment of the present invention, the body portion and the gas inlet portion is characterized in that the size of the outer diameter is different.

In addition, in one preferred embodiment of the present invention, the appearance of the gas inlet is characterized in that it has a shape including a screw thread.

In addition, in a preferred embodiment of the present invention, the gas outlet side front end portion of the body portion is characterized in that it comprises a round shape.

As described above, according to the welding purging jig provided with the vertical injection gas discharge part,

The present invention provides a gas discharge portion so that the inert gas is directly injected to the welded portion of the welded material to the body portion inserted into the welded material to more effectively discharge the inert gas to prevent oxidation of the back bead. have.

In addition, the present invention in forming the size, arrangement, etc. of the discharge holes included in the gas discharge portion, it is possible to inject the inert gas directly to the welding site, and there is an effect that can reduce the consumption of the inert gas. .

1 is a view schematically showing the overall appearance of the jig for welding purge provided with a vertical injection gas discharge unit according to an embodiment of the present invention.
FIG. 2 is a view schematically illustrating a state in which a welding purge jig having a vertical injection gas discharge part is inserted into a welded material according to an embodiment of the present invention.
3 is a schematic cross-sectional view of a state in which a welding purge jig provided with a vertical injection gas discharge part is inserted into a material to be welded according to an embodiment of the present invention.
4 is a view schematically showing a discharge hole of the gas discharge unit according to an embodiment of the present invention.
FIG. 5 is a view schematically illustrating a tip of a welding purge jig having a vertical injection gas discharge part according to an exemplary embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are to make the disclosure of the present invention complete, and those of ordinary skill in the art to which the present invention belongs. It is provided to fully inform the scope of the invention, and the invention is defined only by the scope of the claims.

Shapes, sizes, ratios, angles, numbers, and the like for describing the embodiments of the present invention are exemplary and the present invention is not limited. In addition, in describing the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In the case where 'comprises', 'haves', 'consists of' and the like mentioned in the present specification are used, other parts may be added unless 'only' is used. In the case where the component is expressed in the singular, the plural includes the plural unless specifically stated otherwise.

In interpreting a component, it is interpreted to include an error range even if there is no separate description.

In addition, in the case of the description of the positional relationship, for example, when the positional relationship between the two parts is described as 'on', 'upper', 'upper', 'next to' and the like, One or more other parts may be located between the two parts unless a 'direct' or 'direct' is used.

And, in the case of the description of the time relationship, for example, when the temporal after-term relationship is described as' after ',' following ',' after ',' before ', or the like,' right 'or' It may also include cases that are not continuous unless direct 'is used.

In addition, although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another. Therefore, the first component mentioned below may be a second component within the technical spirit of the present invention.

In addition, the 'X-axis direction', 'Y-axis direction' and 'Z-axis direction' should not be interpreted only as geometric relationships in which the relations are perpendicular to each other, and within the range in which the configuration of the present invention can function. It may mean having a wider directionality.

Also, it is to be understood that the term 'at least one' includes all possible combinations that can be presented from one or more related items. For example, the meaning of "at least one of the first item, the second item, and the third item" means not only the first item, the second item, or the third item, but also two of the first item, the second item, and the third item, respectively. It can mean a combination of all items that can be presented from more than one.

The features of the various embodiments of the present invention may be combined or combined with each other, partly or wholly, and various technically interlocking and driving are possible, and each of the embodiments may be independently implemented with respect to each other or may be implemented together in a related relationship. It may be.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing the overall appearance of the jig for welding purge provided with a vertical injection gas discharge unit according to an embodiment of the present invention, Figure 2 is a vertical injection gas discharge unit provided according to an embodiment of the present invention 3 is a view schematically illustrating a state in which a welding purge jig is inserted into a material to be welded, and FIG. 3 illustrates a state in which a welding purge jig having a vertical injection gas discharge part is inserted into a material to be welded according to an embodiment of the present invention. Figure 4 is a schematic cross-sectional view, Figure 4 is a view schematically showing the discharge hole of the gas discharge unit according to an embodiment of the present invention, Figure 5 is a welding provided with a vertical injection gas discharge unit according to an embodiment of the present invention It is a figure which shows schematically the front end of a purge jig | tool.

First, referring to FIG. 1, a welding purge jig provided with a vertical injection gas discharge part according to the present invention may basically include a body part 100, a gas inlet part 200, and a gas discharge part 300. have.

Body portion 100 is a configuration that is inserted into the interior of the welded material 10 through which the inside, such as a pipe, may have a cylindrical shape having a length in the longitudinal direction. However, the present invention is not limited thereto, and the shape of the body part 100 may vary depending on the shape of the welded material 10. At this time, as shown in Figure 2, the outer diameter of the body portion 100 is smaller than the inner diameter of the welded material 10 so that the body portion 100 can be inserted into the inside of the welded material (10). It can be formed as.

The gas inlet 200 may be formed at one end of the body part 100 and may have a length along a direction protruding from one end of the body part 100. In this case, the outer diameter of the body portion 100 and the gas inlet 200 may be different, for example, the gas inlet 200 may have a smaller diameter than the body 100. In addition, the exterior of the gas inlet 200 may be formed in a shape including a screw thread in the form of a male screw so as to be screwed with another device. As such, when the gas inlet part 200 has a smaller diameter than the body part 100, the gas inlet part 200 may be gripped and rotated with less force, and thus may be easily detachable.

The gas discharge part 300 is formed at the other end of the body part 100 and is configured such that an inert gas is injected perpendicular to the axis of the welded material 10, as shown in FIG. 3, the gas discharge part. The position of 300 is preferably formed at a position corresponding to the welded portion of the welded material 10 when the body portion 100 is inserted into the welded material 10. In this case, the gas discharge part 300 may include at least one discharge hole 350 formed along the outer circumference of the body part 100. That is, the discharge hole 350 may be formed such that the inert gas is directly injected to the welding portion of the welded material 10.

Referring to FIG. 4, the diameter d1 of the discharge hole 350 may be formed in a size of 0.1 to 0.5 mm. When the diameter d1 is smaller than 0.1 mm, the discharge of the inert gas may be insufficient, and larger than 0.5 mm. If formed, more inert gas may be released than necessary.

On the other hand, the separation distance (d2) along the outer circumferential direction of the body portion 100 of the discharge hole 350 may be 1 to 5mm, if formed closer than 1mm discharge pressure of the inert gas can be lowered directly to the welding site The injection may be inadequate, and when formed farther than 5 mm, the inert gas may be injected out of the welded portion, and thus the oxidation prevention efficiency may be insufficient because the inert gas may not be directly sprayed on the welded portion.

And, the discharge hole 350 may be formed in one to five rows along the axial direction of the body portion 100, if the discharge hole 350 is formed in five or more rows along the axial direction of the body portion 100 Since the inert gas is discharged out of the welding portion to waste the inert gas, it is preferable to form the discharge hole 350 within five rows, and more preferably, within three rows.

At this time, the separation distance (d3) along the axial direction of the body portion 100 of the discharge hole 350 may be 1 to 3mm, when formed closer than 1mm discharge pressure of the inert gas can be lowered directly to the welding site The injection may be inadequate, and when formed farther than 3 mm, the inert gas may be injected out of the welded portion, and thus may not be directly sprayed on the welded portion.

On the other hand, the gas discharge unit 300 side end portion of the body portion 100 of the welding purging jig provided with a vertical injection gas discharge unit according to the present invention may be formed to include a round shape, as shown in FIG. . When the front end portion is formed in a shape including a round shape as described above, the body portion 100 may be more smoothly inserted into the inside of the welded material 10, so that the surface of the welded material 10 is cut. Thus, the surface can be prevented from being bad.

Additionally, the material of the welding purge jig provided with the vertical injection gas discharge unit according to the present invention may use carbon steel for mechanical structure, and preferably S45C.

While the embodiments of the present invention have been described in more detail, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of protection of the present invention should be interpreted by the claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: welded material 100: body
200: gas inlet 300: gas outlet
350: discharge hole

Claims (10)

A body part 100 inserted into the welded material 10;
A gas inlet 200 having a length along a direction protruding from one end of the body part 100 and having a smaller diameter than the body part and having an inert gas in which a thread is formed on one side thereof is not coupled to the body part. ; And
And a gas discharge part 300 formed at the other end of the body part 100 and configured to inject the inert gas perpendicularly to the axis of the weldable material 10.
The gas discharge unit 300,
The jig for welding purge with a vertical injection gas discharge portion is formed along the outer periphery of the body portion 100 and comprises at least one discharge hole 350 having a diameter (d1) of 0.1 to 0.5mm.
The method of claim 1,
The gas discharge part 300 is a jig for welding purge provided with a vertical injection gas discharge, characterized in that formed in a position corresponding to the welding portion of the welded material (10).
delete delete The method of claim 1,
Jig for welding purge with a vertical injection gas discharge, characterized in that the separation distance (d2) along the outer circumferential direction of the body portion 100 of the discharge hole 350 is 1 to 5mm.
The method of claim 1,
The discharge hole 350 is a jig for welding purge with a vertical injection gas discharge, characterized in that formed in 1 to 5 rows along the axial direction of the body portion (100).
The method of claim 6,
Jig for welding purge with a vertical injection gas discharge, characterized in that the separation distance (d3) along the axial direction of the body portion 100 of the discharge hole 350 is 1 to 3mm.
delete delete The method of claim 1,
Jig for welding purge provided with a vertical injection gas discharge portion, characterized in that the front end portion of the body discharge portion 300 is formed to include a round shape.

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