KR101413099B1 - Welded pipe testing device and testing method - Google Patents

Welded pipe testing device and testing method Download PDF

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Publication number
KR101413099B1
KR101413099B1 KR1020130040357A KR20130040357A KR101413099B1 KR 101413099 B1 KR101413099 B1 KR 101413099B1 KR 1020130040357 A KR1020130040357 A KR 1020130040357A KR 20130040357 A KR20130040357 A KR 20130040357A KR 101413099 B1 KR101413099 B1 KR 101413099B1
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KR
South Korea
Prior art keywords
steel pipe
welded steel
unit
welded
fixing part
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KR1020130040357A
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Korean (ko)
Inventor
전효식
한상빈
이태오
신점수
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주식회사 포스코
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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
    • B23K37/04—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0296—Welds
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
    • G01N2203/0647—Image analysis

Abstract

The present invention relates to a welded steel pipe testing device and a testing method to determine a welded state by observing whether a welded part is broken during a compression process after compressing a welded steel pipe. The welded steel pipe testing device comprises a transfer unit which transfers the welded steel pipe by being inclined at the upper surface; a return unit which stops the welded steel pipe at a position where the welded steel pipe and returns the compressed welded steel pipe by being installed on the transfer unit; a first fixing unit which moves to be in contact with one surface of the stopped welded steel pipe and fixes the welded steel pipe; a second fixing unit which is installed to face the first fixing unit and rotates the welded steel pipe by being in contact with the other surface of the welded steel pipe; a detection unit which detects whether the rotating welded unit of the welded steel pipe is located on the front surface; and a compression unit which is located on the upper part of the transfer unit and compresses the welded steel pipe. The transfer unit further includes a stop unit which has a stop groove on the upper part to stop the welded steel pipe and has a rounded lower part; a movement unit which rotates the stop unit by moving while being in contact with the stop unit; and a driving unit which moves the movement unit back and forth.

Description

용접강관 시험장치 및 시험방법{WELDED PIPE TESTING DEVICE AND TESTING METHOD}[0001] WELDED PIPE TESTING DEVICE AND TESTING METHOD [0002]

본 발명은 용접강관을 압축한 후 압축과정 동안 용접부의 파단 여부를 관찰하여 용접 상태를 판단하는 용접강관 시험장치 및 시험방법에 관한 것이다.The present invention relates to a test apparatus and a test method for a welded steel pipe for determining a weld state by observing whether a welded portion is broken during a compression process after compressing the welded steel pipe.

일반적으로 하이드로포밍(Hydroforming)공법은 액압(Hydraulic pressure)이나 공압(Pneumatic pressure)을 이용하여 피가공물을 확대 성형시키는 기계 판금의 특수한 가공법 중 하나이다. 이러한 하이드로포밍공법은 부품을 제조하는 과정에서 부품을 경량화시킬 수 있는 동시에 부품 안정성을 향상시킬 수 있어 최근 다양한 산업분야에서 이용되고 있다.Generally, the hydroforming method is one of the special processing methods of the mechanical sheet metal which enlarges the workpiece by using the hydraulic pressure or the pneumatic pressure. Such a hydroforming method has recently been used in various industrial fields because it can lighten the parts in manufacturing the parts and improve the stability of the parts.

하이드로포밍공법이 적용되는 자동화 공정은 강관(pipe)을 일정한 형상으로 구부리는 벤딩공정(bending process)과, 벤딩된 강관을 금형장치에 세팅하고 액압 또는 공압으로 확대 성형시키는 하이드로포밍 공정(Hydroforming process) 및 확대 성형된 강관을 트리밍(Trimming) 절단하고 세척하여 완제품화하는 마무리 공정 등을 포함한다.The automation process to which the hydroforming method is applied includes a bending process for bending a pipe to a certain shape, a hydroforming process for setting a bended steel pipe to a mold device, And a finishing process in which the enlarged-molded steel pipe is trimming-cut, washed, and finished.

하이드로포밍공법에 사용되는 강관은 두께가 일정한 판상의 스틸 강판을 원통의 튜브형상으로 구부려 용접하여 제작되는데, 이러한 용접부의 상태가 최종 성형 제품의 품질에 영향을 끼친다.The steel pipe used in the hydroforming method is manufactured by welding a plate-shaped steel plate having a constant thickness by bending it into a cylindrical tube shape, and the state of the welded portion affects the quality of the final molded product.

왜냐하면, 용접부의 용접상태가 불량하면 강관을 유압등으로 확대 성형하는 공정 중 용접부가 파손되기 때문이다.This is because, if the welded state of the welded portion is poor, the welded portion is damaged in the process of expanding the steel pipe by hydraulic pressure or the like.

따라서, 하이드로포밍 제품을 만들기 전에 용접부의 결함여부를 판단하는 판단 작업이 우선적으로 이루어져야 한다.Therefore, prior to making the hydroforming product, a judgment operation for judging whether or not the welded portion is defective should be given priority.

도1은 종래의 용접강관의 용접부 결함여부를 판단하는 장치에 관한 개략도이며, 도2는 이의 작동 상태도이다.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of an apparatus for determining whether or not a welded portion of a conventional welded steel pipe is defective, and FIG. 2 is an operational state view thereof.

종래에는 가공된 용접강관(P)을 일정한 길이로 절단하여 시편을 제작하고, 제작된 시편을 프레스의 하부 다이(die)(5)에 올리고, 지그(4)를 이용하여 용접부가 전면에 위치하도록 시편을 정렬시킨 후, 실린더(3)를 전진시켜 상부 다이(die)(7)로 시편을 압축하면서 용접부의 파단여부를 관찰하여 용접부의 결함여부를 판단하였다.In the prior art, the processed welded steel pipe P is cut to a predetermined length to produce a specimen, the prepared specimen is placed on the lower die 5 of the press, and the welded portion is positioned on the front side using the jig 4 After aligning the specimens, the cylinder 3 was advanced to compress the specimen with the upper die 7 to determine whether the welds were broken or not.

그러나, 종래의 시험방법은 모든 과정을 작업자가 수작업으로 하여야 하므로, 시험과정 중 용접부가 정확히 전면에 위치하도록 시편의 자세를 고정하기 어려웠고, 압축과정 중 시편이 튕겨 안전사고가 발생하는 문제점이 있었다.However, in the conventional test method, all the processes must be manually performed by the operator. Therefore, it is difficult to fix the posture of the specimen so that the welded portion is located exactly on the front surface during the test process, and the specimen is repelled during the compression process.

또한, 상기와 같은 문제점으로 인해 용접강관의 용접부 결함여부 시험과정을 생략한 채로 하이드로포밍 공정을 수행하여 최종 제품의 수율이 감소하는 문제점이 있었다.In addition, the hydroforming process is omitted, owing to the above-described problems, and the yield of the final product is reduced.

본 발명은 하이드로포밍 공법에 사용되는 용접강관의 용접부 결함여부 판단과정을 자동화하여 상기 과정을 신속히 수행할 뿐 아니라, 용접부를 정확히 전면에 위치시켜 정확한 데이터를 얻을 수 있는 용접강관 시험장치 및 방법을 제공한다.The present invention provides an apparatus and method for testing welded steel pipe that can automate the process of determining weld defect in welded steel pipe used in the hydroforming process to quickly perform the process, do.

본 발명은 상면이 경사지게 형성되어 용접강관을 이송하는 이송부; 상기 이송부에 설치되어 상기 용접강관이 압축되는 위치에서 상기 용접강관을 정지시키고 압축된 상기 용접강관을 반송하는 반송부; 정지된 상기 용접강관의 일측면과 접촉되도록 이동하며, 상기 용접강관을 고정하는 제1고정부; 상기 제1고정부에 대향하도록 설치되며, 상기 용접강관의 타측면에 접촉하여 상기 용접강관을 회전시키는 제2고정부; 회전하는 상기 용접강관의 용접부가 전면에 위치하는지 여부를 감지하는 감지부; 및 상기 이송부의 상부에 위치하며 상기 용접강관을 압축하는 압축부를 포함하되,
상기 반송부는, 상부에 상기 용접강관을 정지시키는 정지홈이 형성되고, 하부가 라운드지도록 형성되는 정지부; 상기 정지부와 접촉하여 이동함에 따라 상기 정지부를 회동시키는 진퇴부;상기 진퇴부를 진퇴이동시키는 구동부로 구성된 것을 더 포함하는 용접강관 시험장치를 개시한다.According to the present invention, there is provided a welding machine comprising: a conveying part formed with an upper surface inclined to convey a welded steel pipe; A conveying unit installed at the conveying unit to stop the welded steel pipe at a position where the welded steel pipe is compressed and to convey the compressed welded steel pipe; A first fixing part moving to come into contact with one side of the stopped welded steel pipe and fixing the welded steel pipe; A second fixing part provided so as to face the first fixing part and contacting the other side of the welded steel pipe to rotate the welded steel pipe; A sensing unit for sensing whether a welding portion of the rotating welded steel pipe is positioned on the front surface; And a compression unit positioned above the transfer unit and compressing the welded steel pipe,
Wherein the carry section includes: a stopper section having a stop groove formed therein for stopping the welded steel pipe; And a driving part for moving the advancing / retreating part forward and backward. The apparatus for testing a welded steel pipe according to claim 1, further comprising:

삭제delete

또한, 상기 제2고정부에 설치되어 상기 용접강관의 타측면을 부착시키는 자석판 및 상기 제2고정부를 회전시키는 회전모터를 더 포함할 수 있다.The apparatus may further include a magnet plate installed on the second fixing part to attach the other side of the welded steel pipe, and a rotation motor for rotating the second fixing part.

또한, 상기 제1고정부에 설치되어, 회전하는 상기 용접강관과의 마찰을 감소시키는 마찰감소부재를 더 포함할 수 있다.In addition, it may further comprise a friction reducing member provided on the first fixing portion and reducing friction with the welded steel pipe rotating.

또한, 상기 제1고정부 및 제2고정부 각각에 설치되어, 상기 용접강관과 접촉시 충격을 완화시키는 완충부재를 더 포함할 수 있다.In addition, it may further comprise a buffer member provided on each of the first fixing portion and the second fixing portion, for alleviating an impact upon contact with the welded steel pipe.

또한, 상기 용접강관의 압축시 용접부분의 파단여부를 촬영하는 카메라부를 더 포함할 수 있다.The apparatus may further include a camera unit for photographing whether the welding portion is broken when the welded steel pipe is compressed.

한편, 본 발명은 용접강관을 공급하는 단계와, 상기 반송부에 상기 용접강관을 위치시키는 단계와, 공급된 상기 용접강관을 고정시키기 위해 상기 제1고정부를 상기 용접강관의 일 측면을 향해 이동시키는 단계와, 상기 용접강관의 용접부를 전면에 위치시키기 위해 상기 제2고정부를 상기 용접강관의 타측면에 접촉시켜 회전시키는 단계와, 상기 용접강관을 압축부에 의해 지면의 수직방향으로 압축하는 단계와, 압축된 상기 용접강관을 이송하는 단계를 포함하는 용접강관 시험방법을 개시한다.According to another aspect of the present invention, there is provided a method for manufacturing a welded steel pipe, comprising the steps of supplying a welded steel pipe, positioning the welded steel pipe in the carry part, and moving the first fixed part to one side of the welded steel pipe Rotating the welded steel pipe by contacting the second fixed portion with the other side of the welded steel pipe so as to position the welded portion of the welded steel pipe on the whole surface; And a step of conveying the compressed welded steel pipe.

이와 같이 본 발명은 신속히 용접강관의 용접부 결함여부를 판단하여 최종 제품의 생산시간을 감축시킬 뿐 아니라, 용접부 결함여부의 정확한 데이터를 확보하여 최종 제품의 생산성 증가시키는 효과가 있다.As described above, according to the present invention, it is possible to quickly determine whether or not a welded portion of a welded steel pipe is defective, thereby reducing the production time of the final product, and securing accurate data as to whether or not the welded portion is defective.

도1은 종래의 용접강관 시험장치에 관한 개략도이다.
도2는 종래의 용접강관 시험장치의 작동 상태도이다.
도3은 본 발명에 따른 용접강관 시험장치의 개략도이다.
도4는 본 발명에 따른 용접강관 시험장치의 부분 확대도이다.
도5a에서 도5f는 본 발명에 따른 용접강관 시험방법을 설명하기 위한 예시도이다.1 is a schematic view of a conventional apparatus for testing a welded steel pipe.
2 is an operational state view of a conventional apparatus for testing a welded steel pipe.
3 is a schematic view of an apparatus for testing a welded steel pipe according to the present invention.
4 is a partial enlarged view of the apparatus for testing a welded steel pipe according to the present invention.
5A to 5F are views for explaining a method of testing a welded steel pipe according to the present invention.

이하, 본 발명과 관련된 용접강관 시험장치의 실시예를 첨부한 도면을 참고하여 보다 상세하게 설명한다.Hereinafter, embodiments of a welded steel pipe testing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

본원에서 장치 또는 요소 방향(예를 들어 "전", "후", "위", "아래", "상", "하", "좌", "우", "횡" 등과 같은 용어들에 관하여 사용된 표현 및 술어는 단지 본 발명의 설명을 단순화하기 위해 사용되고, 관련된 장치 또는 요소가 단순히 특정 방향을 가져야함을 나타내거나 의미하지 않는다It is to be understood that the term "device" or "element" is used herein to refer to a device or elemental direction (eg, "front", "after", "above", "below", "upper", "lower", "left", "right" Used expressions and predicates are used merely to simplify the description of the present invention and do not indicate or imply that the associated device or element should have a particular orientation

도3은 본 발명에 따른 용접강관(P) 시험장치의 개략도이다.3 is a schematic view of a test apparatus for a welded steel pipe (P) according to the present invention.

도3을 참조하면 본 발명에 따른 용접강관(P) 시험장치는 이송부(300), 반송부(500). 제1고정부(110), 제2고정부(150), 감지부(650) 및 압축부(610)를 포함한다.Referring to FIG. 3, the apparatus for testing a welded steel pipe (P) according to the present invention includes a transfer unit 300 and a transfer unit 500. And includes a first fixing part 110, a second fixing part 150, a sensing part 650, and a compression part 610.

이송부(300)는 공급부(670)에서 공급된 용접강관(P)을 이송한다.The transfer unit 300 transfers the welded steel pipe P supplied from the supply unit 670.

이송부(300)는 하부 본체(710)에 설치되며, 상면이 경사지게 형성된다. 용접강관(P)은 이송부(300)의 일단부에 설치된 공급부(670)에서 하나씩 공급되고 이송부(300)의 상면을 따라 회전하며 이송된다.The transfer unit 300 is installed in the lower main body 710, and the upper surface of the transfer unit 300 is inclined. The welded steel pipe P is supplied one by one from the supply part 670 provided at one end of the transfer part 300 and is rotated and transferred along the upper surface of the transfer part 300. [

이송부(300)에는 가이드 홈(310)이 형성되어 용접강관(P)이 이송 중 이탈되지 않도록 한다.A guide groove 310 is formed in the transfer part 300 so that the welded steel pipe P is not released during the transfer.

가이드 홈(310)을 따라 이송된 용접강관(P)은 반송부(500)상에 위치된다.The welded steel pipe P conveyed along the guide groove 310 is placed on the carry section 500.

반송부(500)는 이송부(300)에 설치되어 용접강관(P)이 압축되는 위치에서 용접강관(P)을 정지시키고, 이후 후술할 압축부(610)에 의해 압축된 용접강관(P)을 반송한다.The carry section 500 is provided in the transfer section 300 to stop the welded steel pipe P at a position where the welded steel pipe P is compressed and then to move the welded steel pipe P compressed by the compressed section 610 Return.

반송부(500)는 정지부(510), 진퇴부(530) 및 구동부(550)를 포함한다.The carry section 500 includes a stop section 510, a retracting section 530, and a driving section 550.

정지부(510)는 이송부(300) 내부에 위치하며, 정지부(510) 상부가 이송부(300) 상면에 노출되어 이송되는 용접강관(P)을 위치시킨다.The stopper 510 is positioned inside the feeder 300 and the upper portion of the stopper 510 is exposed on the upper surface of the feeder 300 to position the welded steel pipe P to be conveyed.

이때, 정지부(510) 상면에는 정지홈(513)이 형성되어 이송되는 용접강관(P)을 정지시킨다.At this time, a stop groove 513 is formed on the upper surface of the stopper 510 to stop the welded steel pipe P being conveyed.

정지부(510)의 하부는 중심부가 돌출되도록 라운드지게 형성되며, 이송부(300) 내부에 힌지부(515)를 중심으로 회동운동 가능하도록 설치된다.The lower portion of the stopper 510 is formed to be rounded so that the central portion thereof protrudes and is installed to be rotatable around the hinge portion 515 inside the transferring portion 300.

진퇴부(530)는 정지부(510)를 회동시킨다.The advancing / retracting portion 530 rotates the stopper 510.

구체적으로, 진퇴부(530)는 진퇴운동하도록 이송부(300) 내부에 설치되며, 진퇴부(530)가 전진하면 진퇴부(530) 상면이 정지부(510) 하부와 접촉하여 정지부(510)를 밀게되어 정지부(510)를 회동시키고, 진퇴부(530)가 후퇴하면 정지부(510)와의 접촉이 해제되어 정지부(510)를 원위치로 복귀시킨다.Specifically, the advance / retreat part 530 is installed inside the conveyance part 300 to move back and forth, and when the advance / retreat part 530 advances, the upper surface of the advance / retreat part 530 comes into contact with the lower part of the stop part 510, The stopper 510 is pivoted so that when the advancing / retracting portion 530 retreats, the contact with the stopper 510 is released and the stopper 510 is returned to the original position.

정지부(510)가 회동하면 정지부(510) 상면에 놓인 압축된 용접강관(P)이 이송부(300)에 설치된 이송롤러(330)로 반송되고, 용접강관(P)은 이송롤러(330)를 따라 이송된다.When the stopper 510 is rotated, the compressed welded steel pipe P placed on the upper surface of the stopper 510 is conveyed to the conveying roller 330 provided on the conveying unit 300. The welded steel pipe P is conveyed to the conveying roller 330, Lt; / RTI >

구동부(550)는 진퇴부(530) 일단부에 설치되어 진퇴부(530)를 진퇴이동시킨다.The driving unit 550 is installed at one end of the advancing / retreating unit 530 to move the advancing / retreating unit 530 forward / backward.

이때, 구동부(550)는 구동 실린더일 수 있다.At this time, the driving unit 550 may be a driving cylinder.

제1고정부(110)는 정지된 용접강관(P)의 일측면과 접촉되도록 이동한다.The first fixing part 110 moves to come into contact with one side of the stopped welded steel pipe P. [

도4를 참조하면, 제1고정부(110)는 정지부(510)의 일측면에 위치하도록 설치되고, 용접강관(P)이 정지부(510)에 위치하면 이송방향(도면의 z방향)에 직교방향(도면의 x방향)으로 진입하여 용접강관(P)의 일측면에 접촉된다.4, when the welded steel pipe P is positioned at the stopper 510, the first fixing part 110 is installed at one side of the stopper 510, (X direction in the figure) and contact one side of the welded steel pipe P.

이때, 제1고정부(110)의 이동은 제1고정부(110)의 일단에 연결된 실린더(115)에 의할 수 있다.At this time, the movement of the first fixing part 110 can be performed by the cylinder 115 connected to one end of the first fixing part 110.

제2고정부(150)는 제1고정부(110)에 대향하도록 설치되어 용접강관(P)의 타측면과 접촉한다.The second fixing part 150 is provided so as to face the first fixing part 110 and contacts the other side of the welded steel pipe P.

구체적으로, 제1고정부(110)가 진입하면서 정지한 용접강관(P)의 일측면을 가압하여 용접강관(P)을 x방향으로 이동시키고, 이로써 제2고정부(150)와 용접강관(P)의 간극이 좁혀지게 되어 용접강관(P)의 타측면이 제2고정부(150)와 밀착하게 되는 것이다.The welded steel pipe P is moved in the x direction by pressing one side of the welded steel pipe P stopped while the first fixing part 110 enters, P is narrowed so that the other side of the welded steel pipe P is in close contact with the second fixing part 150. [

제2고정부(150)는 접촉된 용접강관(P)을 회전시켜 용접강관(P)의 용접부(A)가 전면에 위치되도록 한다.The second fixing part 150 rotates the welded welded pipe P so that the welded part A of the welded steel pipe P is positioned on the front side.

이때, 제2고정부(150)에는 일단부에 자석판(153)이 설치되어 용접강관(P)의 타측면을 부착시킬 수 있다.At this time, a magnet plate 153 is provided at one end of the second fixing part 150 to attach the other side of the welded steel pipe P.

또한, 제2고정부(150)의 타단부에는 회전모터(155)가 설치되어 제2고정부(150)를 회전시킨다.A rotation motor 155 is provided at the other end of the second fixing part 150 to rotate the second fixing part 150.

한편, 제1고정부(110)에는 마찰감소부재(113)가 설치될 수 있다.On the other hand, the first fixing part 110 may be provided with a friction reducing member 113.

마찰감소부재(113)는 용접강관(P)이 제2고정부(150)에 부착되어 회전할 때, 용접강관(P)의 일면과 제1고정부(110)와의 마찰을 감소시켜 용접강관(P)이 원활하게 회전할 수 있도록 한다.The friction reducing member 113 reduces the friction between the first fixing part 110 and one side of the welded steel pipe P when the welded steel pipe P is attached to the second fixing part 150 and rotates, P) can rotate smoothly.

이때, 마찰감소부재(113)는 볼베어링일 수 있다.At this time, the friction reducing member 113 may be ball bearing.

또한, 제1고정부(110) 및 제2고정부(150)에는 완충부재(117, 157)가 설치될 수 있다.The first fixing part 110 and the second fixing part 150 may be provided with buffering members 117 and 157, respectively.

완충부재(117, 157)는 도면의 x축 방향으로 제1고정부(110)의 좌측면과 제2고정부(150)의 우측면 각각에 설치되어 용접강관(P)이 제1고정부(110) 및 제2고정부(150)와의 접촉시 충격을 완화시킨다.The buffer members 117 and 157 are provided on the left side surface of the first fixing portion 110 and the right side surface of the second fixing portion 150 respectively in the x axis direction of the drawing and the welded steel pipe P is fixed to the first fixing portion 110 ) And the second fixing part 150. [0052] As shown in FIG.

감지부(650)는 용접강관(P)의 용접부(A)가 전면(도면의 z방향)에 위치하는지 여부를 감지한다.The sensing unit 650 senses whether or not the welded portion A of the welded steel pipe P is located on the front surface (z direction in the figure).

감지부(650)는 제2고정부(150)에 연결된 지지대에 의해 정지부(510)에 정지한 용접강관(P)의 전면에 설치된다.The sensing unit 650 is installed on the front surface of the welded steel pipe P stopped at the stopper 510 by a support member connected to the second fixing unit 150.

용접강관(P)이 압축되는 방향(도면의 y방향)과 직교하도록 용접부(A)가 위치하여야 압축에 따른 용접부(A) 파단여부를 검출하여 보다 정확한 데이터를 확보할 수 있기 때문이다.This is because the welding portion A is positioned so as to be orthogonal to the direction in which the welded steel pipe P is compressed (y direction in the drawing), so that it is possible to detect more accurate data by detecting whether or not the welding portion A is broken due to compression.

이때, 감지부(650)는 리미트 스위치(Limit switch)일 수 있다.At this time, the sensing unit 650 may be a limit switch.

구체적으로, 용접강관(P)이 제2고정부(150)에 부착되어 회전할 때 용접강관(P) 상에 돌출된 용접부(A)가 리미트 스위치의 접촉단자를 밀어내고, 이에 의해 발생한 전기적인 신호가 제어부(미도시)에 전송되고, 신호를 수신한 제어부(미도시)는 제2고정부(150)의 구동모터(155)를 제어하여 회전을 멈춤으로써 용접부(A)가 전면으로 위치하게 한다.Specifically, when the welded steel pipe P is attached to the second fixed portion 150 and rotated, the welded portion A protruding on the welded steel pipe P pushes the contact terminal of the limit switch, The control section (not shown) receiving the signal controls the driving motor 155 of the second fixing section 150 to stop the rotation so that the welding section A is positioned at the front side do.

리미트 스위치의 구성은 널리 알려진 기술이므로 자세한 도시는 생략한다.Since the configuration of the limit switch is a well-known technology, detailed illustration is omitted.

압축부(610)는 정지홈(513)에 위치하는 용접강관(P)을 압축한다.The compression section 610 compresses the welded steel pipe P located in the stop groove 513. [

압축부(610)는 이동판(611) 및 압축판(615)을 포함하며, 정지한 용접강관(P)의 상측에 위치하도록 설치된다.The compression section 610 includes a moving plate 611 and a compression plate 615 and is installed so as to be positioned above the stationary welded steel pipe P.

구체적으로, 상부 본체(730)와 하부 본체(710)를 연결하는 복수의 지지바(750)에 이동판(611)이 슬라이딩 가능하도록 설치되고 이동판(611) 하측에 압축판(615)이 설치되어, 이동판(611)이 아래로 이동하면서 압축판(615)이 용접강관(P)을 압축하는 것이다.Specifically, a moving plate 611 is slidably installed on a plurality of support bars 750 connecting the upper body 730 and the lower body 710, and a compression plate 615 is installed below the moving plate 611 And the compression plate 615 compresses the welded steel pipe P while the moving plate 611 moves downward.

이때, 압축판(615)에는 용접강관(P)이 중앙에 위치하도록 홈이 형성될 수 있다.At this time, the compression plate 615 may be formed with a groove such that the welded steel pipe P is positioned at the center.

이동판(611)과 상부 본체(730) 사이에는 실린더(115)가 설치되어 이동판(611)을 상/하 이동시킬 수 있다.A cylinder 115 is provided between the moving plate 611 and the upper body 730 to move the moving plate 611 up and down.

또한, 압축부(610)에는 카메라부(900)가 설치될 수 있다.In addition, a camera unit 900 may be installed in the compression unit 610.

카메라부(900)는 용접강관(P)을 촬영할 수 있는 위치에 설치되어 용접강관(P)의 압축시 용접부(A)분의 파단여부를 촬영한다.The camera unit 900 is provided at a position where the welded steel pipe P can be photographed to photograph whether or not the welded portion A is broken when the welded steel pipe P is compressed.

이로써, 작업자가 압축과정 동안 노출되지 않아 압축과정 중 용접강관(P)이 튕겨 발생하는 안전사고의 위험을 감소시킨다.This reduces the risk of a safety accident in which the worker is not exposed during the compression process and the welded steel pipe P is rebounded during the compression process.

압축된 용접강관(P)은 반송부(500)에 의해 반송되어 이송롤러(330)를 따라 이동하고, 이송부(300)의 타단부에 설치된 회수부(690)에 모아져 회수된다.The compressed welded steel pipe P is conveyed by the conveying unit 500 and moved along the conveying roller 330 and collected in a collecting unit 690 provided at the other end of the conveying unit 300 to be recovered.

본 발명에 따른 용접강관(P) 시험방법은 용접강관(P)을 공급하는 단계, 반송부(500)에 상기 용접강관(P)을 위치시키는 단계, 공급된 상기 용접강관(P)을 고정시키기 위해 제1고정부(110)를 상기 용접강관(P)의 일 측면을 향해 이동시키는 단계, 상기 용접강관(P)의 용접부(A)를 전면에 위치시키기 위해 제2고정부(150)를 상기 용접강관(P)의 타측면에 접촉시켜 회전시키는 단계, 상기 용접강관(P)을 압축부(610)에 의해 지면의 수직방향으로 압축하는 단계, 압축된 상기 용접강관(P)을 이송하는 단계를 포함한다.The method of testing a welded steel pipe P according to the present invention includes the steps of supplying a welded steel pipe P, positioning the welded steel pipe P in the carry unit 500, fixing the supplied welded steel pipe P Moving the first fixing part 110 toward one side of the welded steel pipe P and fixing the second secured part 150 to the welded steel pipe P in order to position the welded part A of the welded steel pipe P on the front side A step of rotating the welded steel pipe P in a direction perpendicular to the paper surface by a compressing unit 610, a step of conveying the compressed welded steel pipe P .

이로써, 용접강관(P)의 압축 시험 단계가 자동적으로 이루어지게 되어 용접부(A) 결함여부 판단을 신속히 할 수 있고, 용접부(A) 결함여부의 정확한 데이터를 확보할 수 있다.Thereby, the compression test step of the welded steel pipe P is automatically performed, so that it is possible to promptly determine whether or not the welded portion A is defective, and it is possible to secure accurate data as to whether or not the welded portion A is defective.

이상에서는 본 발명에 따른 용접강관 시험장치 및 시험방법을 첨부한 도면들을 참조하여 설명하였으나, 본 발명은 본 명세서에 개시된 실시예와 도면에 의해 한정되는 것은 아니며, 본 발명의 기술사상의 범위 내에서 당업자에 의해 다양한 변형이 이루어질 수 있다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Various modifications may be made by those skilled in the art.

110: 제1고정부 113: 마찰감소부재 115: 실린더
117: 완충부재 150: 제2고정부 153: 자석판
155: 회전모터 157: 완충부재 300: 이송부
310: 가이드 홈 330: 이송롤러 500: 반송부
510: 정지부 513: 정지홈 515: 힌지부
530: 진퇴부 550: 구동부 610: 압축부
611: 이동판 615: 압축판 650: 감지부
670: 공급부 690: 회수부 710: 하부 본체
730: 상부 본체 750: 지지바 900: 카메라부
A: 용접부 P: 용접강관110: first fixing part 113: friction reducing member 115: cylinder
117: buffer member 150: second fixing member 153: magnetic plate
155: rotation motor 157: buffer member 300:
310: Guide groove 330: Feed roller 500:
510: stop portion 513: stop groove 515: hinge portion
530: retracting portion 550: driving portion 610:
611: moving plate 615: compression plate 650: sensing unit
670: supplying part 690: recovering part 710:
730: upper body 750: supporting bar 900:
A: weld P: welded steel pipe

Claims (7)

상면이 경사지게 형성되어 용접강관을 이송하는 이송부;
상기 이송부에 설치되어 상기 용접강관이 압축되는 위치에서 상기 용접강관을 정지시키고 압축된 상기 용접강관을 반송하는 반송부;
정지된 상기 용접강관의 일측면과 접촉되도록 이동하며, 상기 용접강관을 고정하는 제1고정부;
상기 제1고정부에 대향하도록 설치되며, 상기 용접강관의 타측면에 접촉하여 상기 용접강관을 회전시키는 제2고정부;
회전하는 상기 용접강관의 용접부가 전면에 위치하는지 여부를 감지하는 감지부; 및
상기 이송부의 상부에 위치하며 상기 용접강관을 압축하는 압축부를 포함하되,
상기 반송부는,
상부에 상기 용접강관을 정지시키는 정지홈이 형성되고, 하부가 라운드지도록 형성되는 정지부;
상기 정지부와 접촉하여 이동함에 따라 상기 정지부를 회동시키는 진퇴부;
상기 진퇴부를 진퇴이동시키는 구동부로 구성된 것을 더 포함하는 용접강관 시험장치.A conveying part formed on an upper surface so as to be inclined to convey the welded steel pipe;
A conveying unit installed at the conveying unit to stop the welded steel pipe at a position where the welded steel pipe is compressed and to convey the compressed welded steel pipe;
A first fixing part moving to come into contact with one side of the stopped welded steel pipe and fixing the welded steel pipe;
A second fixing part provided so as to face the first fixing part and contacting the other side of the welded steel pipe to rotate the welded steel pipe;
A sensing unit for sensing whether a welding portion of the rotating welded steel pipe is positioned on the front surface; And
And a compression unit located above the transfer unit and compressing the welded steel pipe,
Wherein,
A stopper having a stop groove for stopping the welded steel pipe at an upper portion thereof and a lower portion formed to be rounded;
An advancing / retreating portion that rotates the stopper as it moves in contact with the stopper;
And a driving unit for moving the advancing and retreating unit forward and backward. 삭제delete 제1항에 있어서,
상기 제2고정부에 설치되어 상기 용접강관의 타측면을 부착시키는 자석판; 및
상기 제2고정부를 회전시키는 회전모터를 더 포함하는 용접강관 시험장치.The method according to claim 1,
A magnet plate installed on the second fixing part and attaching the other side of the welded steel pipe; And
And a rotating motor for rotating the second fixing part. 제1항에 있어서,
상기 제1고정부에 설치되어, 회전하는 상기 용접강관과의 마찰을 감소시키는 마찰감소부재를 더 포함하는 용접강관 시험장치.The method according to claim 1,
Further comprising a friction reducing member provided on the first fixing portion and reducing friction with the rotating welded steel pipe. 제1항에 있어서,
상기 제1고정부 및 제2고정부 각각에 설치되어, 상기 용접강관과 접촉시 충격을 완화시키는 완충부재를 더 포함하는 것을 특징으로 하는 용접강관 시험장치.The method according to claim 1,
Further comprising a cushioning member provided on each of the first fixing portion and the second fixing portion to reduce an impact upon contact with the welded steel pipe. 제1항에 있어서,
상기 용접강관의 압축시 용접부분의 파단여부를 촬영하는 카메라부를 더 포함하는 용접강관 시험장치.The method according to claim 1,
And a camera section for photographing whether or not the welded portion is broken when the welded steel pipe is compressed. 제1항에 기재된 용접강관 시험장치를 이용하는 용접강관 시험방법으로,
용접강관을 공급하는 단계;
상기 반송부에 상기 용접강관을 위치시키는 단계;
공급된 상기 용접강관을 고정시키기 위해 상기 제1고정부를 상기 용접강관의 일 측면을 향해 이동시키는 단계;
상기 용접강관의 용접부를 전면에 위치시키기 위해 상기 제2고정부를 상기 용접강관의 타측면에 접촉시켜 회전시키는 단계;
상기 용접강관을 압축부에 의해 지면의 수직방향으로 압축하는 단계;
압축된 상기 용접강관을 이송하는 단계를 포함하는 용접강관 시험방법.A welded steel pipe test method using the welded steel pipe test apparatus according to claim 1,
Supplying a welded steel pipe;
Positioning the welded steel pipe in the carry section;
Moving the first fixing part toward one side of the welded steel pipe to fix the supplied welded steel pipe;
Rotating the second fixing part in contact with the other side surface of the welded steel pipe so as to position the welded part of the welded steel pipe on the whole surface;
Compressing the welded steel pipe in a direction perpendicular to the paper surface by a compression unit;
And conveying the compressed welded steel pipe.
KR1020130040357A 2013-04-12 2013-04-12 Welded pipe testing device and testing method KR101413099B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101640182B1 (en) * 2015-06-15 2016-07-18 주식회사 피스웰 Torque Tester Device
CN105865917A (en) * 2016-04-20 2016-08-17 太仓宝达齿条有限公司 Plastic rack compression resistance detection device
CN113340906A (en) * 2021-06-01 2021-09-03 安徽首源新材料有限公司 Steel pipe surface crack detection device and detection method thereof

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Publication number Priority date Publication date Assignee Title
US4635471A (en) 1986-01-16 1987-01-13 Energy Development Corporation Hardness testing device for pipes
KR0116243Y1 (en) * 1994-12-14 1998-06-15 김만제 Flattening test device of welding pipe

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Publication number Priority date Publication date Assignee Title
US4635471A (en) 1986-01-16 1987-01-13 Energy Development Corporation Hardness testing device for pipes
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101640182B1 (en) * 2015-06-15 2016-07-18 주식회사 피스웰 Torque Tester Device
CN105865917A (en) * 2016-04-20 2016-08-17 太仓宝达齿条有限公司 Plastic rack compression resistance detection device
CN105865917B (en) * 2016-04-20 2018-07-10 太仓宝达齿条有限公司 A kind of plastics rack resistance to compression detection device
CN113340906A (en) * 2021-06-01 2021-09-03 安徽首源新材料有限公司 Steel pipe surface crack detection device and detection method thereof

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