KR101632424B1 - Welding method of Short pipe connecting - Google Patents

Welding method of Short pipe connecting Download PDF

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Publication number
KR101632424B1
KR101632424B1 KR1020150171974A KR20150171974A KR101632424B1 KR 101632424 B1 KR101632424 B1 KR 101632424B1 KR 1020150171974 A KR1020150171974 A KR 1020150171974A KR 20150171974 A KR20150171974 A KR 20150171974A KR 101632424 B1 KR101632424 B1 KR 101632424B1
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KR
South Korea
Prior art keywords
turning roller
pipe
welding
turning
welded
Prior art date
Application number
KR1020150171974A
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Korean (ko)
Inventor
노황경
Original Assignee
주식회사 현대유압
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Priority to KR1020150171974A priority Critical patent/KR101632424B1/en
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Publication of KR101632424B1 publication Critical patent/KR101632424B1/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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/027—Making tubes with soldering or 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
    • 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
    • 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
    • B23K37/0535—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 longitudinal pipe seam alignment clamps
    • 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
    • B23K37/0538—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 for rotating tubes, e.g. rollers

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

Abstract

The present invention relates to a method of welding a single pipe or a double pipe connection welding in which a single pipe is formed by welding a single pipe to a single pipe to which welding reference is made, A first step in which one end of the prism pipe is supported and supported by the first turning roller and the other end of the prism pipe extends over half of the second turning roller; The first and the second turning rollers and the third turning roller are placed on the first and the second turning rollers so that the other end of the first and the second ends of the first and second magnetic tubes are in close contact with each other, A second step of raising the one end of the first objective tube to the remaining portion of the second turning roller and the other end of the first objective tube to the half of the third turning roller; A third step of rotating the first turning roller, the second turning roller, and the third turning roller while welding the welded portions between the parent pipe and the first magnetic pipe; A fourth step of widening the second turning roller to both sides of the welded single pipe after the completion of the welding in the third step and separating the same at the single welded portion; A fifth step of moving the second turning roller of the fourth step to the position of the other welding portion of the second-end single- A sixth step of raising the second magnetic member to the third turning roller and the second turning roller so that the other end of the first magnetic member and the one end of the second magnetic member are in close contact with each other; And a seventh step of welding a welded portion between the first and second magnetic tubes while rotating the first turning roller, the third turning roller and the second turning roller. ≪ / RTI >
According to the present invention, it is possible to eliminate the necessity of a crane in single-end connection welding work, to reduce the time and effort of the connection work of the single pipe, and to perform the connection work of the single pipe in accordance with the size of the whole pipe, There is an advantage that a method is provided.

Description

[0001] Welding method of Short pipe connecting [

The present invention relates to a method of welding a single pipe or a double pipe connection welding in which a single pipe is formed by welding a single pipe to a single pipe to which welding reference is made, A first step in which one end of the prism pipe is supported and supported by the first turning roller and the other end of the prism pipe extends over half of the second turning roller; The first and the second turning rollers and the third turning roller are placed on the first and the second turning rollers so that the other end of the first and the second ends of the first and second magnetic tubes are in close contact with each other, A second step of raising the one end of the first objective tube to the remaining portion of the second turning roller and the other end of the first objective tube to the half of the third turning roller; A third step of rotating the first turning roller, the second turning roller, and the third turning roller while welding the welded portions between the parent pipe and the first magnetic pipe; A fourth step of widening the second turning roller to both sides of the welded single pipe after the completion of the welding in the third step and separating the same at the single welded portion; A fifth step of moving the second turning roller of the fourth step to the position of the other welding portion of the second-end single- A sixth step of raising the second magnetic member to the third turning roller and the second turning roller so that the other end of the first magnetic member and the one end of the second magnetic member are in close contact with each other; And a seventh step of welding a welded portion between the first and second magnetic tubes while rotating the first turning roller, the third turning roller and the second turning roller. ≪ / RTI >

In general, the connection of large tubular bodies is performed by connecting and welding single pipes.

The single pipe has a length of the same size. The lower pipe is supported by a turning roller, and the two single pipe welds are brought into close contact with each other.

The bottom view welding is the basic welding, so the welding quality is excellent, so the welding quality of the whole joint is constant and excellent, so it can be said that it is essential in single joint welding.

Also, since single pipe welding is performed by welding a pipe having a relatively large size, it is very difficult to use an orbital welding machine.

Therefore, in the single-pipe welding, the position of the welding machine is located on the upper side of the single-pipe welding portion, and the single pipe is rotated to linearly transfer the welding portion to the welding machine.

The rotation of such a single pipe is carried out by a turning roller supporting the lower side of the single pipe.

Therefore, the arrangement of the turning rollers in the single-pipe welding becomes a very important process element for determining the welding quality, and generally, the turning roller is disposed at the joint (welded portion) connecting the two single pipes to rotate the single pipe.

In the prior art method, after the single pipe is welded, the welded single pipe is lifted up by a crane for relocation of the turning roller, and the turning roller located above the welded portion is separated and reassembled after welding on the new welded portion of the single pipe.

However, according to the conventional method, since the size of the single pipe is large from the beginning, the size of the crane must also be increased proportionally, and the weight and size of the single pipe increase as the connection of the single pipe progresses.

Therefore, the size of the single pipe manufacturing plant must be increased considering the size and weight of the crane, and the crane process is inserted in each process, which increases the process time and effort exponentially.

In the prior art, a large-pipe type automatic pipe welding system is introduced, and the invention of such a device is also irrespective of the problems of the prior art.

In the case of the above-mentioned prior art patent, a turning roller for supporting the entire single pipe for connecting the single pipe must be provided, and it is impossible to connect the single pipe more than the size of the device.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to eliminate the necessity of a crane in a single pipe connection welding operation to reduce the time and effort of a connecting operation process of a single pipe, The present invention relates to a method for welding a single or a double pipe joint.

According to an aspect of the present invention, there is provided a method of welding a single pipe or a double pipe joint welding a single end pipe by welding a single end pipe to a single pipe to which welding reference is made, A first step of raising an eyedropper, one end of the prime mover being supported and supported by the first turning roller, and the other end of the prong being laid over half of the second turning roller; The position where the turning roller half supports the end of the single pipe is referred to as the 'welded portion position'.) The first and the second turning rollers and the third turning roller are put on the first and second turning rollers, Wherein one end of the first objective tube is placed on the remaining portion of the second turning roller and the other end of the first objective tube is wrapped around half of the third turning roller, Wow; A third step of rotating the first turning roller, the second turning roller, and the third turning roller while welding the welded portions between the parent pipe and the first magnetic pipe; A fourth step of widening the second turning roller to both sides of the welded single pipe after the completion of the welding in the third step and separating the same at the single welded portion; A fifth step of moving the second turning roller of the fourth step to the position of the other welding portion of the second-end single- A sixth step of raising the second magnetic member to the third turning roller and the second turning roller so that the other end of the first magnetic member and the one end of the second magnetic member are in close contact with each other; And a seventh step of welding a welded portion between the first and second magnetic tubes while rotating the first turning roller, the third turning roller and the second turning roller. The method is a technical point.

delete

According to the present invention, it is possible to eliminate the necessity of a crane in the single pipe connection welding operation, to reduce the time and effort of the connecting operation of the single pipe, and to connect the single pipe or the double pipe connection There is an advantage that a welding work method is provided.

Fig. 1 is a side view of the second step of the present invention
2 is a plan view of the second stage of the present invention
3 is a plan view of the third step of the present invention
Fig. 4 is a plan view of the implementation of the fourth and fifth steps of the present invention
Figure 5 is a side-by-side view of the fourth and fifth steps of the present invention.
6 is a side view of the sixth step of the present invention
7 is a planar structural view of a sixth step of the present invention
Figure 8 is a side view of a prior art embodiment
9 is a frontal structural view of an apparatus used only for the present invention
Fig. 10 is a front view of the apparatus of Fig. 9,

Hereinafter, the present invention will be described with reference to the drawings. In the following description of the present invention, a detailed description of related arts or configurations will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured will be.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to be exemplary, self-explanatory, allowing for equivalent explanations of the present invention.

2 is a plan view of a second stage of the present invention, FIG. 3 is a plan view of a third stage of the present invention, FIG. 4 is a plan view of a fourth stage of the present invention 6 is a side view of the sixth step of the present invention, and Fig. 7 is a side view of the sixth embodiment of the present invention. Fig. 9 is a front structural view of an apparatus used only for the present invention, and Fig. 10 is a front structural view of the apparatus of Fig. 9 in which a mount is separated. Fig.

As shown in the drawings, the present invention relates to a welding method for welding a single or a double pipe, comprising a single pipe 10 divided into a single pipe 10-10 and a single pipe 10-20, -1, a turning roller 20 and a welding machine 30, which are divided into a second turning roller 20-2 and a third turning roller 20-3.

Since the single pipe connection welding operation of the present invention is performed, the single pipe 10 to be welded is divided into the parent pipe 10-10 and the magnetic pipe 10-20 as shown in FIG. 7, (10-21) and the second-person-end pipe (10-22) according to the welding sequence.

In the present invention, the parent pipe (10-10) refers to a welded pipe or a first pipe, and the self-pipe (10-20) refers to a pipe to be welded. As shown in FIG.

Further, the magnetic pipe 10-20 is welded to the mother pipe 10-10 to become a new mother pipe 10-11 as shown in Fig. 6, and the subsequent magnetic pipe 10-20 is welded.

The new corrugated pipe 10-11 is generally called a cistern, but the present invention will be described in terms of a new corrugated pipe.

The turning roller 20 supporting the single pipe 10 is also classified by the first turning roller 20-1, the second turning roller 20-2 and the third turning roller 20-3 do.

The present invention relates to a welding method of welding a single pipe or a double pipe joint by welding a magnetic pipe (10-20) to a parent pipe (10-10) to which a welding reference is made.

The first step of the present invention is a step of preparing the parent pipe (10-10) for welding, wherein one side of the parent pipe (10-10) is supported by the first turning roller (20-1) The other end of the mother canal 10-10 is raised over half of the second turning roller 20-2.

The second step of the present invention is a step of preparing the welding of the magnetic pipe 10-20 to the second turning roller 20-2 and the third turning roller 20-3, 21).

As shown in FIGS. 1 and 2, at this stage, the first-end single-ended pipe 10-21 is connected to the other end of the first single-ended pipe 10-10, The second turning roller 20-2 and the third turning roller 20-3 are brought into close contact with each other.

The first end-effector tube 10-21, which is raised to the second turning roller 20-2 and the third turning roller 20-3, has one end of the first-end tube 10-21, Is raised to the remaining portion of the turning roller 20-2 and the other end of the first magnetic pipe 10-21 is raised over half of the third turning roller 20-3.

At this time, the half of the second turning roller 20-2 is lifted up from the parent pipe 10-10 as shown in FIG. 1, and the remaining half of the second turning roller 20-2 is lifted up by the first parent pipe 10-21 , And the parent pipe (10-10) and the magnetic pipe (10-20) are tightly welded to each other.

That is, since the position of the second turning roller 20-2 is a position where welding is performed, the following process is repeated, so that the half of the turning roller 20 supports the end portion of the magnetic pipe 10-20 'Weld location'.

According to this, the position of the turning roller 20 supporting the end portions of all the magnetic-flux tubes 10-20 will become the 'welded portion position'.

3, the third turning roller 20-1, the second turning roller 20-2, and the third turning roller 20-3 are rotated while rotating the first rounding roller 20-1, the second turning roller 20-2, 10-10) and the first-end single-tube 10-21 with the welder 30. In this step,

In the third step, when the short pipe 10 is rotated while welding the welded portion of the single pipe 10 to the welder 30 at the upper end of the close contact area between the single pipe 10-10 and the first single pipe 10-21, Welding continues to be welded downwards, improving weld quality.

After the completion of the welding in the third step, the fourth step is a step of spreading the second turning roller 20-2 on both sides of the welded single tube and separating the same at the single welded portion as shown in FIGS.

The present invention differs from the conventional method in the fourth and subsequent steps in that unlike the method of lifting the welded single pipe into the crane 40 to separate the turning roller 20 as shown in FIG. 8, ) Can be inserted into both ends of the tube, saving time, equipment, and effort.

The fifth step of the present invention is a step of moving the second turning roller 20-2 separated in the fourth step to the position of the other end welded portion of the second-end single pipe 10-22 to be continuously connected.

The second magnetic pipe 10-22 is a portion of the single pipe 10 to be continuously welded to the first magnetic pipe 10-21 and is welded to the first melt pipe 10-21, Conceptually becomes a new model (10-11) (a cistern).

The sixth step of the present invention is to lift the second member pipe 10-22 to the third turning roller 20-3 and the second turning roller 20-2 as shown in FIG. The other end of the single-ended pipe 10-21 and the end of the second-end single pipe 10-22 are brought into close contact with each other.

The sixth step is actually a repetitive operation of the second step only in the order of the respective components.

The seventh step of the present invention is also a repetitive operation of the third step. As the first turning roller 20-1, the third turning roller 20-3, and the second turning roller 20-2 are rotated, And welding the welded portion between the parent pipe (10-11) and the second-end single pipe (10-22) with the welder (30).

The subsequent welding work of the third and fourth end tubes can also be performed continuously in this manner, and it is obvious that the present invention also has a technical point about the continuous welding work method of the subsequent green steel.

The present invention is capable of continuous welding of the single pipe 10 without lifting the pipe welded to the crane 40 as shown in Fig. 8 in continuous welding of the single pipe, thus saving work space, It is possible to reduce the work time and effort.

Particularly, there is an advantage in that the weight of the tubular body, which has been difficult to progress as the single tube 10 is continuously welded, is solved, and the welding length of the tubular body can be greatly expanded while improving the welding efficiency.

Implementation of the method of the present invention requires a device that is used only for the method of the present invention.

9, a mount 210 having the turning roller 20 installed thereon and an actuator 240 for horizontally moving the turning roller 20 is formed, and a mount 210 formed on both sides of the mount 210, And the fixing unit 220 is formed with a fastening means 230 to fasten the mount 210 and drives the turning roller 20 to perform the first, The mount 210 is disassembled from the means 230 to perform the fourth and fifth steps and the mount 210 is again fastened by the fastening means 230 of the guide 220 to perform the sixth and seventh steps A turning roller device used in a single or double welded joint welding method is presented.

Since the first, second and third steps correspond to a conventional single pipe connection operation and the characteristic method of the present invention is performed in steps 4 and 5, the turning roller must be provided with means for this purpose.

The turning roller 20 is generally provided with an actuator 240 for horizontal movement on the mount 210. In the present invention, the mount 210 is removably formed in accordance with a process order.

The actuator 240 is formed of a combination of a hydraulic cylinder and a piston, or a combination of a hydraulic motor 242 and a gear 241 as shown in FIG. 9 and belongs to a well-known technology, and thus a detailed description thereof will be omitted.

That is, the mount 210 is provided with an actuator 240 for horizontal movement, and the actuator 240 is provided with a turning roller 20.

The guide 220 is formed as a simple straight frame as a support inserted to fix the distance between the mounts 210. The mount 210 is installed on both sides of the guide 220 with the guide 220 interposed therebetween, (230), the single-pipe connecting turning roller (20) is installed.

When the first and second stepped monofilament 10-10 and magnetic pipe 10-20 are mounted on the turning roller 20, the actuator is driven in the third step to rotate the turning roller 20 And the turning roller 20 presses the short tube 10 to transmit the rotational force.

When the welding of the parent pipe 10-10 and the magnetic pipe 10-20 of the third stage is completed, the actuator 240 is driven to move the turning roller 20 in the direction opposite to the end pipe 10, 10 and then the fourth step is performed by separating the mounts 210 on both sides or one side with the fastening means of the guide 220 as shown in FIG. 10, and the separated mount 210 and the guide 220 And the like are moved to the position of the next welded part by a forklift or the like and the mount 210 and the guide 220 are assembled with the fastening means 230 to carry out the fifth step.

The fastening means 230 may be formed by a through hole communicating between the guide 220 and the mount 210 and fastened with a bolt. However, the design deformation capable of easily fastening and disengaging is possible even within a known range will be.

It will be apparent to those skilled in the art that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that the technical spirit of the present invention is to the extent possible.

10: Exclusive
10-10:
10-11: New Modalities (We have defined the terms of the cesspool)
10-20:
10-21: first party pipe 10-22: second party pipe
20: Turning roller
20-1: first turning roller 20-2: second turning roller
20-3: third turning roller
30: Welding machine 40: Crane
210: mount 220: guide
230: fastening means 240: actuator

Claims (2)

A method of welding a single or double pipe joint welding method for forming a single pipe by welding a single pipe to a single pipe to which welding reference is made,
Wherein the first turning roller and the second turning roller for rotating the parent pipe are lifted to raise the parent pipe, one end of the parent pipe is supported and supported by the first turning roller, and the other end of the parent pipe passes through the second turning (Hereinafter, the position at which the end portion of the end portion of the turning roller is supported by the turning roller half portion is referred to as a " weld portion position ").

The second turning roller and the third turning roller are brought into close contact with one end of the first magnetic member tube by bringing the first magnetic member into contact with the other end of the first and the second magnetic member, A second step of raising the other end of the first objective tube over half of the third turning roller;

A third step of rotating the first turning roller, the second turning roller, and the third turning roller while welding the welded portions between the parent pipe and the first magnetic pipe;

A fourth step of widening the second turning roller to both sides of the welded single pipe after the completion of the welding in the third step and separating the same at the single welded portion;

A fifth step of moving the second turning roller of the fourth step to the position of the other welding portion of the second-end single-

A sixth step of raising the second magnetic member to the third turning roller and the second turning roller so that the other end of the first magnetic member and the one end of the second magnetic member are in close contact with each other;

A seventh step of welding a close contact portion between the parent and the second-end single-walled tubes by a welding machine while rotating the first turning roller, the third turning roller, and the second turning roller;
Wherein the welded joint is welded to the welded joint.
delete
KR1020150171974A 2015-12-04 2015-12-04 Welding method of Short pipe connecting KR101632424B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200000669U (en) 2018-09-19 2020-03-27 삼성중공업 주식회사 Height adjustable pipe supporter for connecting pipe
KR102674518B1 (en) * 2023-05-19 2024-06-11 김형무 Short pipe connections in large structures

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030062305A (en) * 2003-07-10 2003-07-23 (주)제이엔씨인더스트리 Automatic welding system for tank
KR20040016629A (en) * 2002-08-19 2004-02-25 현대중공업 주식회사 Girth seam outside milling machine for welding joint grooving
KR20130005056U (en) * 2012-02-16 2013-08-26 이문희 Rolling apparatus for welding of cylinder type structure
JP2014176876A (en) * 2013-03-15 2014-09-25 Kawaju Facilitech Co Ltd Turning roller device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040016629A (en) * 2002-08-19 2004-02-25 현대중공업 주식회사 Girth seam outside milling machine for welding joint grooving
KR20030062305A (en) * 2003-07-10 2003-07-23 (주)제이엔씨인더스트리 Automatic welding system for tank
KR20130005056U (en) * 2012-02-16 2013-08-26 이문희 Rolling apparatus for welding of cylinder type structure
JP2014176876A (en) * 2013-03-15 2014-09-25 Kawaju Facilitech Co Ltd Turning roller device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200000669U (en) 2018-09-19 2020-03-27 삼성중공업 주식회사 Height adjustable pipe supporter for connecting pipe
KR102674518B1 (en) * 2023-05-19 2024-06-11 김형무 Short pipe connections in large structures

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