KR20160120139A - Welding torch and Welding apparatus having the same - Google Patents

Welding torch and Welding apparatus having the same Download PDF

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Publication number
KR20160120139A
KR20160120139A KR1020150049266A KR20150049266A KR20160120139A KR 20160120139 A KR20160120139 A KR 20160120139A KR 1020150049266 A KR1020150049266 A KR 1020150049266A KR 20150049266 A KR20150049266 A KR 20150049266A KR 20160120139 A KR20160120139 A KR 20160120139A
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KR
South Korea
Prior art keywords
discharge groove
gas discharge
gas
welding
torch head
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Application number
KR1020150049266A
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Korean (ko)
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KR101778769B1 (en
Inventor
임동용
김용재
심덕남
Original Assignee
두산중공업 주식회사
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Priority to KR1020150049266A priority Critical patent/KR101778769B1/en
Publication of KR20160120139A publication Critical patent/KR20160120139A/en
Application granted granted Critical
Publication of KR101778769B1 publication Critical patent/KR101778769B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/38—Torches, e.g. for brazing or heating
    • F23D14/40—Torches, e.g. for brazing or heating for welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/29—Supporting devices adapted for making use of shielding means

Abstract

INDUSTRIAL APPLICABILITY The nozzle-integrated type torch head and the welding apparatus including the same according to the present invention can minimize the volume of the torch head by minimizing the volume of the torch head, thereby making it possible to miniaturize the volume of the welding apparatus as a whole, And has the same performance as a torch head equipped with a conventional nozzle, so that it does not have to rely on manual welding, thereby saving the workforce of the workforce.

Description

TECHNICAL FIELD [0001] The present invention relates to a nozzle-integrated torch head and a welding apparatus including the torch head.

The present invention relates to a nozzle-integrated torch head, and more particularly, to a nozzle-integrated torch head capable of minimizing the volume of the torch head to be small, And a welding apparatus including the same.

Generally, the orbital welder refers to an orbital welder that performs welding operations while moving along the outer diameter of a tube or pipe such as a boiler, a heat pipe or a cooling tube of a power plant or the like to connect two pipes together, A welder that cuts into two pieces.

These orbital automatic welding devices are used in places where high quality of the most important welding part is required until recently and this demand is also applied in the industry where the appearance of the welding part is also important, .

Here, the torch head of a general welding apparatus is configured in such a manner that a gas stove, a gas nozzle, and a tungsten electrode are coupled, and a welding gas supplied from a gas nozzle is flowed around the combined tungsten electrode rod, Arc plasma (arc plasma), melting the base material with the heat of the arc, and has been widely used as an important bonding technique in a manufacturing field using a metal material. However, a torch head bundle between two pipes and pipes is orbital welding There is a problem in that the work can not be performed in a narrow space due to the size of the torch head bundle.

Conventionally, there has been an attempt to reduce the size of the gas nozzle of the torch head by reducing the size of the gas nozzle. However, it is inconvenient to manufacture and exchange the gas nozzle of the torch head and can not be operated in a narrow section, there was.

Korean Patent Publication No. 2014-0132754

An object of the present invention is to provide a nozzle-integrated torch head capable of performing welding work even in a narrow space by minimizing the volume of the torch head by minimizing the volume thereof.

According to an aspect of the present invention, there is provided a nozzle-integrated type torch head including an electrode for generating an arc and a body portion having a predetermined thickness, wherein one side of the body portion has a thickness A gas discharge groove for guiding the inside of the gas discharge groove to the opening, a gas discharge groove extending from the other side of the body to one side of the gas discharge groove to supply a welding gas to the gas discharge groove And an electrode rod extending from the inside of the gas discharge groove and protruding outside the gas discharge groove.

Here, the gas discharge groove may include distribution means for uniformly distributing and guiding the welding gas supplied from the gas flow path to the opening.

In addition, the gas discharge groove may include a rear surface provided on the innermost side of the opening portion and a side surface surrounding the rear surface from the rear surface.

The distribution means may include a distribution pad connected to one end of the gas flow path and provided on the back surface of the gas discharge groove, and the distribution pad may be formed in a shape such that the welding gas supplied from the gas flow path, At least one or more spray holes may be provided in the outer periphery.

In addition, the distribution means may be formed of a mesh-shaped plate which is spaced from the back surface of the gas discharge groove and is surrounded by the side surface.

The body may include a circulation channel through which cooling water is circulated.

According to another aspect of the present invention, there is provided a welding apparatus for welding a pipe, comprising: an insertion unit fixed to an outer diameter of a pipe; a carriage provided in the insertion unit and rotatably disposed along a circumferential direction of the pipe; And a torch head mounted on the carriage and welding a welded portion of the pipe, wherein the torch head has a back surface and a side surface in which one side surface of the torso portion is recessed to a certain depth inward in the thickness direction A gas discharge channel extending from the other side of the body portion to one side of the gas discharge groove to supply a welding gas to the gas discharge groove, And a nozzle integrally formed with an electrode rod extending to the outside of the gas discharge groove The apparatus can be provided.

Here, the insertion portion and the carriage may be opened at one side to insert a pipe.

The apparatus may further include rotation means for rotating the carriage along the outer diameter of the pipe.

And the gas discharge groove includes distribution means for uniformly distributing and guiding the welding gas supplied from the gas flow path to the opening.

In addition, the gas discharge groove may include a rear surface provided on the innermost side of the opening portion and a side surface surrounding the rear surface from the rear surface.

In addition, the distribution means may include a distribution pad connected to one end of the gas flow path and provided on the back surface of the gas discharge groove, and the distribution pad may be formed such that the welding gas supplied from the gas flow path extends in the lateral direction And at least one jet hole is provided in the outer periphery so as to be jetted.

In addition, the distribution means may be formed of a mesh-shaped plate which is spaced from the back surface of the gas discharge groove and is surrounded by the side surface.

The body may include a circulation channel through which cooling water is circulated.

In the present invention, since the volume of the torch head is minimized and miniaturized, the welding operation can be performed even in a narrow space, and accordingly, the welding apparatus can also be miniaturized, It has the advantage of saving labor force.

1 is a perspective view illustrating a nozzle-integrated torch head according to an embodiment of the present invention.
2 is a cross-sectional view of the nozzle-integrated torch head shown in Fig.
3 is a perspective view illustrating a nozzle-integrated torch head according to another embodiment of the present invention.
4 is a cross-sectional view of the nozzle-integrated torch head shown in Fig.
5 is a perspective view schematically showing a welding apparatus including a nozzle-integrated torch head according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

FIG. 1 is a perspective view showing a nozzle-integrated type torch head according to an embodiment of the present invention, and FIG. 2 is a sectional view of the nozzle-integrated type torch head shown in FIG.

As shown in FIGS. 1 and 2, the nozzle-integrated torch head 100 according to an embodiment of the present invention includes an electrode rod 150 for generating an arc, a body 110 having a predetermined thickness, A gas discharge groove 120 for guiding gas to the outside, a gas flow passage 130 for supplying a welding gas to the gas discharge groove 120, and an electrode rod 150.

Referring to FIGS. 1 and 2, the body 110 is mounted in a welding apparatus, which will be described later, and is not limited to a polygonal shape as shown in FIG. 1, And can be variously modified and applied as long as the mounting surface is formed.

The gas discharge groove 120 according to an embodiment of the present invention is formed in such a manner that one surface of the body portion 110 which is mounted close to the welding object and faces the welding object is recessed inward, An opening is formed.

The gas discharge groove 120 is recessed at a predetermined depth in the thickness direction of the body 110 so that a rear surface 120a is formed at the innermost portion of the opening and a side surface 120a surrounding the opening 120a, (120b) is formed.

1, the gas discharge groove 120 is not limited to an elliptical shape. The gas discharge groove 120 may be formed in various shapes as needed if the rear surface 120a, the side surface 120b, and the opening are formed as described above Can be considered.

Next, the gas passage 130 is formed to extend from one side of the body 110 to the gas discharge groove 120 to supply a welding gas to the gas discharge groove 120, as described above.

The gas passage 130 extends from one side of the body 110 through a side surface 120b of the gas discharge groove 120 so that one end of the gas passage 130 is connected to the gas discharge groove 120, The gas flow channel 130 of the nozzle integrated type torch head 100 according to the embodiment of the present invention may be provided inside the body 110 and the gas discharge groove 120, And the other end is bent in the direction of the back surface so as to be provided as an L-shaped flow path.

1, the distribution means 140 may be provided to uniformly distribute the welding gas supplied from the gas passage 130 to the outside of the gas discharge groove 120 along the gas discharge groove 120, .

More specifically, it is preferable that the distribution means 140 according to an embodiment of the present invention is formed as a flat distribution pad having a predetermined thickness, one end of the gas passage 130 is connected to one side, And it is preferably mounted on the back surface 120a of the discharge groove 120.

At least one or more spray holes 141 through which the welding gas is sprayed are formed on the side surface of the distribution pad formed to a predetermined thickness so that the welding gas supplied from the gas flow path 130 is discharged from the side surface of the gas discharge groove 120 120b.

Herein, a circular distribution pad is one example, but the present invention is not limited thereto, and it can be considered that the distribution pad can be applied in various forms provided that the spray hole has a certain thickness.

The distribution means 130 is preferably provided with a conventional electrode rod 150 protruding outside the gas discharge groove 120 for performing an arc discharge through electricity to perform welding.

It is also contemplated that a cable (not shown) for applying electricity to the electrode rod 150 is installed in the gas channel 130 and connected together with the gas channel 130.

The electrode rod 150 is a typical technique, and a detailed description thereof will be omitted here.

Finally, it is preferable that the nozzle integrated torch head 100 according to an embodiment of the present invention also includes a circulation channel (not shown) through which the cooling water is circulated to prevent overheat generated by the welding operation, (Not shown) may be provided with an inlet and an outlet, respectively.

Meanwhile, the nozzle-integrated type torch head according to an embodiment of the present invention can be applied to another embodiment. Hereinafter, a nozzle-integrated torch head according to another embodiment of the present invention will be described in detail.

FIG. 3 is a perspective view showing a nozzle-integrated type torch head according to another embodiment of the present invention, and FIG. 4 is a sectional view of the nozzle-integrated type torch head shown in FIG.

3 and 4, the nozzle-integrated torch head 200 according to another embodiment of the present invention includes an electrode rod 250 for generating an arc, a body 210 having a predetermined thickness, A gas discharge groove 220 for guiding the welding gas to the outside, a gas flow channel 230 for supplying a welding gas to the gas discharge groove 220, and an electrode rod 250.

Referring to FIGS. 3 and 4, the body 210 is mounted in a welding apparatus, which will be described later, and is not limited to a polygonal shape as shown in FIG. 3, And can be variously modified and applied as long as the mounting surface is formed.

The gas discharge groove 220 according to another embodiment of the present invention is formed in such a shape that the surface of the body portion 210 facing the welding object mounted close to the welding object is recessed inward, An opening is formed.

The gas discharge groove 220 is recessed at a predetermined depth in the thickness direction of the body 210 so that a rear surface 210a is formed at the innermost portion of the opening and a side surface 210a extending from the rear surface 210a to the opening is formed. (Not shown).

3, the gas discharge groove 220 is not limited to an elliptical shape. As long as the rear surface 210a, the side surface 210b, and the opening are formed as described above, Can be considered.

The gas flow channel 230 is formed to extend from one side of the body 210 to the gas discharge groove 220 to supply a welding gas to the gas discharge groove 220 as described above.

4, the gas passage 230 may extend from one side of the body 210 to the side 210b of the gas discharge groove 220. However, An L-shaped flow path may be formed between the body 210 and the rear surface 210a of the gas discharge groove 220 to have a predetermined length and one end bent toward the rear surface 210a.

3, the distribution means 240 may be provided to uniformly distribute the welding gas supplied from the gas passage 230 to the outside of the gas discharge groove 220 along the gas discharge groove 220, .

3 and 4, the distribution unit 240 according to another embodiment of the present invention is separated from the rear surface 210a of the gas discharge groove 220, And a mesh-shaped plate, which is disposed between the opening of the gas discharge groove 220 and the side surface 210b of the gas discharge groove 220.

Meanwhile, the mesh-shaped plate may be applied to the above-described embodiment of the present invention.

A conventional electrode rod 250 for performing an arc discharge through electricity to perform welding is provided protruding from the back surface 210a of the gas discharge groove 220 to the outside of the gas discharge groove 220, (250) is provided through a part of the mesh-shaped plate.

Meanwhile, as described above, when the gas flow channel 230 is provided in the L shape, the electrode rod 230 may extend from the inside of the gas flow channel.

In addition, a cable (not shown) for applying electricity to the electrode rod 250 may be connected to the gas channel 230 described above.

The electrode rod 250 is a typical technology, and a detailed description thereof will be omitted here.

Lastly, it is preferable that the nozzle integrated torch head 200 according to another embodiment of the present invention also includes a circulation channel (not shown) in which cooling water is circulated to prevent overheat generated by welding operation, The inlet (s) and outlet (s) may be provided in the flow path (not shown).

5 is a perspective view schematically showing a welding apparatus including a nozzle-integrated torch head according to an embodiment of the present invention.

1 and 5, a welding apparatus including a nozzle-integrated torch head according to an embodiment of the present invention includes an insertion portion 300 fixed to an outer diameter of a pipe P, A carriage 310 rotatably disposed along a circumferential direction and a torch head 100 welding a welded portion of the pipe P. The torch head 100 includes a body portion 310 having a predetermined thickness, A gas discharge groove 120 for guiding the welding gas to the outside, a gas flow passage 130 for supplying a welding gas to the gas discharge groove 120, and an electrode rod 150 for generating an arc .

Before describing the present invention, the torch head 100 of the present invention can be applied to a general welding apparatus as well as an orbital automatic welding apparatus for performing welding by rotating in the circumferential direction of a cylindrical welding object such as a pipe P Can be considered.

5, the insertion portion 300 is formed in a U-shape so as to be inserted into the outer diameter between the two pipes P and the pipe P, and the carriage 310 to be described later is mounted A mounting surface is provided.

In this case, it is preferable that a fixing member is provided on the opposite side of the mounting surface so that the insertion portion 300 can be inserted and fixed to the outer diameter of the pipe P, and the fixing member (not shown) .

The carriage 310 is mounted on a mounting surface of the insertion portion 300 and rotatably mounted on a mounting surface of the insertion portion 300 along a circumferential direction of the pipe P. [

The carriage 310 is formed in a shape corresponding to the insertion portion 300 and mounted on the insertion portion 300. The carriage 310 is inserted into at least one of the carriage 310 and the insertion portion 300, And guide rails (not shown) may be provided on the other of the first and second guide rails.

This is because the carriage 310 can be rotated on the mounting surface of the insertion portion 300.

In addition, the carriage 310 must be provided with a rotating means 320 for rotating the rotating means 320. The rotating means 320 may be a conventional motor (not shown) and a bevel gear (not shown) And the rotating method using the bevel gear can be performed through a conventional coupling structure, so that a detailed description thereof will be omitted here.

In addition, a welding apparatus including a nozzle-integrated torch head 100 according to an embodiment of the present invention includes a torch head 100 on one side of the carriage 310 rotatably provided in the inserting unit 300 Respectively.

The torch head 100 is mounted on the carriage 310 which is rotatably mounted and is orbital-welded between two pipes P as a welding object and a pipe P. The torch head 100 has a specific configuration of the torch head 100 Is the same as the nozzle-integrated type torch head 100 of FIGS. 1 and 2 described above, and thus the repetitive description thereof will be omitted.

According to the present invention constructed as described above, the nozzle-integrated torch head and the welding apparatus including the same can be miniaturized by minimizing the volume of the torch head, thereby making it possible to miniaturize the volume of the welding apparatus as a whole and thereby perform welding work in a narrow space And it has the same performance as the conventional nozzle mounted torch head, so it does not have to depend on the manual welding, and thus the workforce of the workforce can be saved.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110, 210; Body portion
120, 220; Gas discharge groove
120a, 220a; The back side of the gas discharge groove
120b, 220b; Side of gas vent groove
130, 230; Gas flow
140, 240; Distribution means
141; Spray gun
150, 250; Electrodes

Claims (14)

1. A nozzle-integrated torch head including a body portion having a predetermined thickness,
Wherein a gas discharge groove is formed in one side of the body so as to be recessed at a predetermined depth inward in the thickness direction to guide welding gas therein to the opening;
A gas flow path extending from the other side of the body portion to one side of the gas discharge groove to supply a welding gas to the gas discharge groove; And
And an electrode rod extending from the inside of the gas discharge groove and protruding outside the gas discharge groove,
The method according to claim 1,
The gas discharge groove
And a distribution means for distributing the welding gas supplied from the gas flow path uniformly and guided to the opening portion.
3. The method of claim 2,
The gas discharge groove
A nozzle-integrated torch head including a rear surface provided on the innermost side of the opening portion and a side surface surrounding the rear surface from the rear surface,
The method of claim 3,
Wherein the distribution means comprises:
And a distribution pad connected to one end of the gas flow path and provided on a back surface of the gas discharge groove,
The distribution pad
Characterized in that at least one spray hole is provided on the outer periphery so that the welding gas supplied from the gas flow path is sprayed in the lateral direction of the gas discharge groove
The method of claim 3,
Wherein the distribution means comprises:
Wherein the nozzle-integrated type torch head is formed by a mesh-shaped plate which is spaced apart from a back surface of the gas discharge groove and is surrounded by the side surface.
The method according to claim 1,
The body portion
A nozzle-integrated type torch head including a circulating flow path in which cooling water is circulated
A welding apparatus for welding a pipe,
An insertion portion fixed to an outer diameter of the pipe;
A carriage provided in the insertion portion and rotatably disposed along a circumferential direction of the pipe;
And a torch head mounted on the carriage and welding a welded portion of the pipe
The torch head
A body portion having a predetermined thickness;
A gas discharge groove for guiding the welding gas in the one side direction by forming a rear surface and a side surface of the body part in such a manner that one side of the body part is recessed at a certain depth inward in the thickness direction;
A gas flow path extending from the other side of the body portion to one side of the gas discharge groove to supply a welding gas to the gas discharge groove; And
An electrode rod extending from the inside of the gas discharge groove and protruding outside the gas discharge groove;
And a nozzle-integrated torch head
8. The method of claim 7,
Wherein the insertion portion and the carriage,
And a welding device including a nozzle-integrated torch head,
8. The method of claim 7,
Further comprising a rotating means for rotating the carriage along an outer diameter of the pipe.
8. The method of claim 7,
The gas discharge groove
And a distribution means for distributing the welding gas supplied from the gas flow path to be uniformly distributed and guided to the opening portion.
11. The method of claim 10,
The gas discharge groove
And a nozzle-integrated torch head including a rear surface provided on the innermost side of the opening portion and a side surface surrounding the rear surface from the rear surface,
11. The method of claim 10,
Wherein the distribution means comprises:
And a distribution pad connected to one end of the gas flow path and provided on a back surface of the gas discharge groove,
The distribution pad
Wherein the gas supply channel includes at least one jet hole in the outer periphery so that the welding gas supplied from the gas channel is jetted in the lateral direction of the gas discharge groove.
11. The method of claim 10,
Wherein the distribution means comprises:
Wherein the gas discharge groove is formed with a mesh-shaped plate spaced from a rear surface of the gas discharge groove and surrounded by the side surface of the gas discharge groove.
8. The method of claim 7,
The body portion
A welding apparatus including a nozzle-integrated torch head including a circulating flow path through which cooling water is circulated
KR1020150049266A 2015-04-07 2015-04-07 Welding torch and Welding apparatus having the same KR101778769B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150049266A KR101778769B1 (en) 2015-04-07 2015-04-07 Welding torch and Welding apparatus having the same

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KR20160120139A true KR20160120139A (en) 2016-10-17
KR101778769B1 KR101778769B1 (en) 2017-09-14

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140132754A (en) 2012-04-18 2014-11-18 아키히사 무라타 Constricting nozzle and tig welding torch using same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011050368A1 (en) 2011-05-15 2012-11-15 Webasto Ag evaporator assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140132754A (en) 2012-04-18 2014-11-18 아키히사 무라타 Constricting nozzle and tig welding torch using same

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