KR101636307B1 - Steel pipe welding machine - Google Patents

Steel pipe welding machine Download PDF

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Publication number
KR101636307B1
KR101636307B1 KR1020150060566A KR20150060566A KR101636307B1 KR 101636307 B1 KR101636307 B1 KR 101636307B1 KR 1020150060566 A KR1020150060566 A KR 1020150060566A KR 20150060566 A KR20150060566 A KR 20150060566A KR 101636307 B1 KR101636307 B1 KR 101636307B1
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South Korea
Prior art keywords
connection
welding
bracket
hole
switching
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KR1020150060566A
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Korean (ko)
Inventor
김병권
Original Assignee
주식회사 스틸플라워
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Priority to KR1020150060566A priority Critical patent/KR101636307B1/en
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Publication of KR101636307B1 publication Critical patent/KR101636307B1/en

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    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding In General (AREA)

Abstract

A large-diameter steel pipe welding apparatus,
A boom for adjusting the working height of the welding head and for transporting the welding head in the longitudinal direction of the steel pipe; An adjustment unit installed at the tip of the boom for adjusting the left-right position, the front-rear position, and the vertical position of the welding head; A connecting unit connecting the adjusting unit and the welding head and switching the direction of the welding head; And a welding head for welding with a welding torch
It is possible to weld the opposed portions of the rounded large-diameter steel pipes in the longitudinal direction, as well as to weld the pair of large-diameter steel pipes in the circumferential direction against each other in the longitudinal direction.

Figure R1020150060566

Description

[0001] STEEL PIPE WELDING MACHINE [0002]

The present invention relates to a large-diameter steel pipe welding apparatus, more particularly, to a method of welding a large-diameter steel pipe in a circumferential direction by welding a large- .

Generally, a large-diameter steel pipe is manufactured in such a manner that both ends of a steel plate are rolled round, and a portion where the butted portion is welded in the longitudinal direction is finely welded.

Further, in order to extend the length of the large-diameter steel pipe, a pair of large-diameter steel pipes of a predetermined length are welded in the circumferential direction against each other.

Patent Document 1 below discloses a steel pipe inner surface welding apparatus for longitudinally welding a butted portion of a rounded large-diameter steel pipe. In addition to the following Patent Documents 2 and 3, a pair of large diameters A steel pipe butt welding apparatus for circumferentially welding a steel pipe is disclosed.

Korean Registered Patent No. 10-1446323 (issued on September 24, 2014) Korean Patent Publication No. 10-2013-0048580 (published on May 10, 2013) Korean Patent Registration No. 10-0739101 (issued on July 12, 2007)

However, in the conventional large-diameter steel pipe welding apparatuses including Patent Documents 1 to 3, a pair of large-diameter steel pipes welded in the longitudinal direction of the rounded large-diameter steel pipe are welded in the circumferential direction And it was not equipped with the longitudinal direction welding function and the circumferential direction welding function at the same time.

Therefore, in the related art, welding apparatuses having different lengthwise welding and circumferential welding of large diameter steel pipes had to be used.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a method of welding a large-diameter steel pipe having rounded corners and a pair of large-diameter steel pipes, And a welding apparatus for welding a large diameter steel pipe.

Another object of the present invention is to provide a large-diameter steel pipe welding apparatus which is easy to manufacture and which can easily switch between longitudinal welding and circumferential welding.

In order to accomplish the above object, a large diameter steel pipe welding apparatus according to the present invention includes: a boom for adjusting a working height of a welding head and transferring the welding head in a longitudinal direction of a steel pipe; An adjustment unit installed at the tip of the boom for adjusting the left-right position, the front-rear position, and the vertical position of the welding head; A connecting unit connecting the adjusting unit and the welding head and switching the direction of the welding head; And a welding head having a welding torch and performing welding.

The apparatus for welding a large diameter steel pipe according to the present invention includes: a first connecting bracket to which the connecting unit is fixed to the adjusting unit; A second connecting bracket connected to the welding head; And a connection bracket connecting the first connection bracket and the second connection bracket.

The large-diameter steel pipe welding apparatus according to the present invention is characterized in that the first connection bracket of the connection unit is fixed to the adjustment unit; A connection plate provided at one side of the upper side and the lower side of the fixing plate; A connection hole provided at the front center of the connection plate; A fixing plate including a switching slot provided concentrically with the connection hole at a front outer side of the connection plate, wherein the second connection bracket of the connection unit is fixed to the welding head; A connection plate provided at one side of the upper side and the lower side of the fixing plate; A connecting hole provided at the center of the connecting plate; and a switching hole provided at both sides of the connecting plate, wherein the connecting bracket of the connecting unit is a bar-shaped body; A connection plate provided at an upper end and a lower end of one side of the main body; A first connection hole provided at the center of the connection plate; A first switching hole provided outside the connection plate; A second connection hole provided at the other side end of the main body; And a second switching hole provided inside the second connection hole of the main body.

A large-diameter steel pipe welding apparatus according to the present invention is characterized in that the first connection bracket and the connection bracket of the connection unit are fastened to the connection hole of the first connection bracket and the first connection hole of the connection bracket; And the first switching bolt fastened to the first switching hole of the first connection bracket and the first switching hole of the first connection bracket and the second connection bracket and the connection bracket of the connection unit are connected to the connection hole of the second connection bracket and the connection bracket, A second fastening bolt fastened to the second connection hole of the second fastening bolt; And the second switching bolt fastened to the switching hole of the second connecting bracket and the second switching hole of the connecting bracket.

The large-diameter steel pipe welding apparatus according to the present invention is characterized in that a welding torch of the welding head is rotatably installed in the front-rear direction, and a welding tip having a small diameter and a long length is mounted on the welding torch.

According to the large-diameter steel pipe welding apparatus according to the present invention, the butted portions of the rounded steel pipe can be welded in the longitudinal direction as well as the pair of steel pipes can be welded in the circumferential direction.

According to the large-diameter steel pipe welding apparatus according to the present invention, it is possible to construct a connecting unit connecting the boom and the welding head with a small number of parts, thereby reducing the cost.

According to the large-diameter steel pipe welding apparatus according to the present invention, the welding direction can be easily switched in the longitudinal direction or the circumferential direction by a simple operation of changing the fastening position of the first connecting bracket and the second connecting bracket of the connecting unit.

1 is a front view of a large-diameter steel pipe welding apparatus according to a preferred embodiment of the present invention,
2 is a plan view of a large-diameter steel pipe welding apparatus according to the present preferred embodiment,
3 is an exploded perspective view of a connection unit of a large diameter steel pipe welding apparatus according to the presently preferred embodiment,
4 is a perspective view of a connection unit of a large-diameter steel pipe welding apparatus according to the preferred embodiment,
5 is a perspective view of the connection unit of the large-diameter steel pipe welding apparatus according to the preferred embodiment of the present invention,
Fig. 6 is a plan view of a large-diameter steel pipe welding apparatus according to the presently preferred embodiment in a circumferential direction switching state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a large-diameter steel pipe welding apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

In the following, the terms "upward", "downward", "forward" and "rearward" and other directional terms are defined with reference to the states shown in the drawings.

FIG. 1 is a front view of a large diameter steel pipe welding apparatus according to a preferred embodiment of the present invention, and FIG. 2 is a plan view of a large diameter steel pipe welding apparatus according to the preferred embodiment of the present invention.

A large diameter steel pipe welding apparatus 100 according to the present invention includes a boom 110, an adjustment unit 120, a connection unit 130, and a welding head 140.

The boom 110 serves to adjust the working height of the welding head 140 and to transport the welding head 140 in the longitudinal direction of the steel pipe.

The adjustment unit 120 is provided at the tip of the boom 110 to control the left-right position, the front-rear position, and the vertical position of the welding head 140.

The adjusting unit 120 includes an X-axis adjusting unit 121 connected to a lower end of the boom 110 to adjust a horizontal position of the welding head 140; A Z-axis adjusting unit 122 connected to the tip of the X-axis adjusting unit 121 to adjust the forward and backward positions of the welding head 140); And a Y axis adjusting unit 123 connected to the tip of the Z axis adjusting unit 122 to adjust the vertical position of the welding head 140.

The connection unit 130 serves to connect the adjustment unit 120 and the welding head 140.

The connection unit 130 includes a first connection bracket 131 fixed to the adjustment unit 120; A second connection bracket 132 connected to the welding head 140; And a connection bracket 133 connecting the first connection bracket 131 and the second connection bracket 132.

 FIG. 3 is an exploded perspective view of a connection unit of a large-diameter steel pipe welding apparatus according to the presently preferred embodiment, and FIG. 4 is a perspective view of a connection unit of a large-diameter steel pipe welding apparatus according to the presently preferred embodiment.

The first connection bracket 131 of the connection unit 130 includes a fixing plate 131a fixed to the adjustment unit 120; A connection plate 131b provided at the upper and lower portions of one side of the fixing plate 131a; A connection hole 131c provided at the front center of the connection plate 131b; And a switching slot 131d provided concentrically with the connection hole 131c at a front outer side of the connection plate 131b.

The second connection bracket 132 of the connection unit 130 includes a fixing plate 132a fixed to the welding head 140; A connection plate 132b provided at the upper and lower portions of one side of the fixing plate 132a; And a connection hole 132c provided at the center of the connection plate 132b: a switching hole 132d provided on both sides of the connection plate 132b.

The connection bracket 133 of the connection unit 130 includes a bar-shaped main body 133a; A connection plate 133b provided at the upper and lower ends of one side of the main body 133a; A first connection hole 133c provided at the center of the connection plate 133b; A first switching hole 133d provided outside the connection plate 133b; A second connection hole 133e provided at the other end of the main body 133a; And a second switching hole 133f provided inside the second connection hole 133d of the main body 133a.

The first connection bracket 131 and the connection bracket 133 of the connection unit 130 are fastened to the connection hole 131c of the first connection bracket 131 and the first connection hole 133c of the connection bracket 133, A first fastening bolt 134; And the first switching bolt 135 fastened to the switching slot 133d of the first connection bracket 131 and the first switching hole 133d of the connection bracket 133. [

The second connecting bracket 132 and the connecting bracket 133 of the connecting unit 130 are fastened to the connecting hole 132c of the second connecting bracket 132 and the second connecting hole 133e of the connecting bracket 133, A second fastening bolt 136; And the second switching bolt 136 fastened to the switching hole 132d of the second connecting bracket 132 and the second switching hole 133f of the connecting bracket 133. [

The welding head 140 includes a connection frame 141; A pair of welding torches 142 provided to the connection frame 141, a flux supplier 143, and a vision sensor 144.

The large diameter steel pipe welding apparatus 100 according to the preferred embodiment of the present invention is characterized in that the welding torch 142 of the welding head 140 is rotatably installed in the front and rear direction and the welding tip 142a having a small diameter and a long length is mounted do.

Accordingly, it is possible to adjust the welding angle in the forward and backward directions, so that a large diameter steel pipe having a narrow groove width and a small groove angle can be welded.

The large diameter steel pipe welding apparatus 100 according to the preferred embodiment of the present invention can change the welding direction by changing the fastening position of the first connecting bracket 131 and the second connecting bracket 132 of the connecting unit 130, Direction or the circumferential direction.

1, 2, and 4 show a state in which a pair of welding torches 142 of the welding head 140 are arranged in parallel in the longitudinal direction so as to longitudinally weld the butted portions of the rounded large- to be.

In order to switch the longitudinal direction welding state to a circumferential welding state in which a pair of large diameter steel pipes facing each other in the longitudinal direction are welded in the circumferential direction, the first turning bolt 135 is unfastened and the connecting bracket 133 is turned counterclockwise The first turning bolt 135 is fastened in front of the switching slot 131d and the second turning bolt 137 is unfastened and the second connecting bracket 132 and the welding head 140 are rotated clockwise And then the second switching bolt 137 is fastened to the left switching hole 132d of the second connection bracket 132. [

FIG. 5 is a perspective view of the connection unit of the large-diameter steel pipe welding apparatus according to the present preferred embodiment in the circumferential direction switching state. FIG. 6 is a plan view of the circumferential-direction welding state of the large diameter steel pipe welding apparatus according to the preferred embodiment.

5 and 6, the circumferential welding control state is a state in which the welding head 140 is rotated clockwise by 90 degrees in the longitudinal welding control state, so that the welding torch 142 is arranged in the circumferential direction It is possible to weld a pair of large-diameter steel pipes facing each other in the circumferential direction.

When the circumferential welding control state is to be switched again to the longitudinal welding state, the second switching bolt 137 is released and the second connecting bracket 132 and the welding head 140 are rotated counterclockwise, The bolts 137 are fastened to the right switching hole 132d of the second connection bracket 132 and the first switching bolt 135 is loosened to rotate the connection bracket 133 clockwise and then the first switching bolt 135 May be fastened to the rear of the switching slot 131d.

As shown in FIGS. 2 and 4, the longitudinal welding adjustment state is a state in which the welding head 140 is rotated 90 degrees counterclockwise in the circumferential welding adjustment state.

As described above, the large-diameter steel pipe welding apparatus 100 according to the preferred embodiment of the present invention can easily switch the welding direction in the longitudinal direction or the circumferential direction through the connection unit 130.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

100: Large diameter pipe welding machine
110: Boom
120: Adjusting unit
130: connection unit
131: first connection bracket
132: second connection bracket
133: Connection bracket
140: welding head

Claims (5)

A boom 110 for adjusting the working height of the welding head 140 and transferring the welding head 140 in the longitudinal direction of the steel pipe;
An adjustment unit 120 installed at a front end of the boom 110 to adjust a left-right position, a front-rear position, and a vertical position of the welding head 140;
A connection unit 130 connecting the adjustment unit 120 and the welding head 140 and switching the direction of the welding head 140;
And a welding head (140) provided with a welding torch (142) for performing welding, the apparatus comprising:
The connection unit 130
A first connection bracket 131 fixed to the adjustment unit 120;
A second connection bracket 132 connected to the welding head 140;
And a connection bracket 133 connecting the first connection bracket 131 and the second connection bracket 132,
The first connection brackets 131,
A fixing plate 131a fixed to the adjustment unit 120;
A connection plate 131b provided at the upper and lower portions of one side of the fixing plate 131a;
A connection hole 131c provided at the front center of the connection plate 131b;
And a switching slot (131d) provided concentrically with the connection hole (131c) at a front outer side of the connection plate (131b)
The second connection bracket 132
A fixing plate 132a fixed to the welding head 140;
A connection plate 132b provided at the upper and lower portions of one side of the fixing plate 132a;
A connection hole 132c provided at the center of the connection plate 132b:
And a switching hole 132d provided on both sides of the connection plate 132b,
The connection brackets 133 are formed in a rectangular shape,
A bar body 133a;
A connection plate 133b provided at the upper and lower ends of one side of the main body 133a;
A first connection hole 133c provided at the center of the connection plate 133b;
A first switching hole 133d provided outside the connection plate 133b;
A second connection hole 133e provided at the other end of the main body 133a;
And a second switching hole 133f provided inside the second connection hole 133d of the main body 133a,
The first connecting brackets 131 and the connecting brackets 133,
A first fastening bolt 134 fastened to the connection hole 131c of the first connection bracket 131 and the first connection hole 133c of the connection bracket 133; And the first switching bolt 135 fastened to the switching slot 133d of the connecting bracket 133 and the switching slot 131d of the first connecting bracket 131,
The second connection brackets 132 and the connection brackets 133,
A second fastening bolt 136 fastened to the connection hole 132c of the second connection bracket 132 and the second connection hole 133e of the connection bracket 133; And the second switching bolt 136 fastened to the switching hole 132d of the second connecting bracket 132 and the second switching hole 133f of the connecting bracket 133,
The welding head 140 is rotated 90 degrees when viewed from the plane by changing the fastening positions of the first connecting bracket 131 and the second connecting bracket 132 so that the large diameter steel pipe can be welded in the longitudinal direction or in the circumferential direction Wherein the large-diameter steel pipe welding apparatus comprises: delete delete delete The method according to claim 1,
Wherein a welding torch (142) of the welding head (140) is rotatably installed in the front and rear direction and a welding tip (142a) having a small diameter and a long length is mounted on the welding torch (142).
KR1020150060566A 2015-04-29 2015-04-29 Steel pipe welding machine KR101636307B1 (en)

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KR1020150060566A KR101636307B1 (en) 2015-04-29 2015-04-29 Steel pipe welding machine

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55114464A (en) * 1979-02-26 1980-09-03 Hitachi Ltd Automatic welding device
KR100568628B1 (en) * 1998-12-24 2006-09-18 삼성중공업 주식회사 Welding Torch Displacement Control System
KR100739101B1 (en) 2006-12-20 2007-07-12 웰텍 주식회사 Butt welding device of pipes
KR101101740B1 (en) * 2011-06-01 2012-01-05 주식회사 디피코 Switching apparatus of welding robot for car
KR200460819Y1 (en) * 2010-11-08 2012-06-13 (주)로멕스테크놀로지 Auto welding robot of multi path type
KR20130048580A (en) 2011-11-02 2013-05-10 재단법인 포항산업과학연구원 Device and method for welding pipe
KR101446323B1 (en) 2014-01-21 2014-10-07 구만중공업 주식회사 Weld-head of the small caliber steel pipe inner welding devices

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55114464A (en) * 1979-02-26 1980-09-03 Hitachi Ltd Automatic welding device
KR100568628B1 (en) * 1998-12-24 2006-09-18 삼성중공업 주식회사 Welding Torch Displacement Control System
KR100739101B1 (en) 2006-12-20 2007-07-12 웰텍 주식회사 Butt welding device of pipes
KR200460819Y1 (en) * 2010-11-08 2012-06-13 (주)로멕스테크놀로지 Auto welding robot of multi path type
KR101101740B1 (en) * 2011-06-01 2012-01-05 주식회사 디피코 Switching apparatus of welding robot for car
KR20130048580A (en) 2011-11-02 2013-05-10 재단법인 포항산업과학연구원 Device and method for welding pipe
KR101446323B1 (en) 2014-01-21 2014-10-07 구만중공업 주식회사 Weld-head of the small caliber steel pipe inner welding devices

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