KR20100060171A - Welding installation ring of stainless steel - Google Patents

Welding installation ring of stainless steel Download PDF

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Publication number
KR20100060171A
KR20100060171A KR1020080118662A KR20080118662A KR20100060171A KR 20100060171 A KR20100060171 A KR 20100060171A KR 1020080118662 A KR1020080118662 A KR 1020080118662A KR 20080118662 A KR20080118662 A KR 20080118662A KR 20100060171 A KR20100060171 A KR 20100060171A
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KR
South Korea
Prior art keywords
welding
attached
ring
shaft
plate
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KR1020080118662A
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Korean (ko)
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KR101075680B1 (en
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손주익
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손주익
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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
    • B23K9/00—Arc welding or cutting
    • 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
    • B23K37/0426—Fixtures for other work
    • B23K37/0452—Orientable fixtures
    • 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
    • B23K2101/30—Chains, hoops or rings
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B23K2103/05—Stainless steel

Abstract

PURPOSE: A welding machine of a stainless steel ring is provided to reduce work error by operating a rotary shaft and a light-shielding layer using a PLC circuit and to finish a welded part cleanly by not using separate metal. CONSTITUTION: A welding machine of a stainless steel ring comprises a shaft holder(2a), a rotary shaft, a connection plate(5), a ring fixing plate, a pressing cylinder, a welding torch(11), an argon welding machine, a sun visor(15), and a PLC circuit. A device unit is formed on the middle portion of the rotary shaft. The device unit fixes the member of the ring shape. The torch of the argon welding machine is formed in the location in which the member of the ring shape is installed. The member connection part of a ring shape is welded through the argon welding machine. The elevation type light-shielding layer is installed between the welding unit and an operator.

Description

스테인레스스틸 링의 용접장치{welding installation ring of stainless steel}Welding installation ring of stainless steel

본 발명은 일정길이의 스테인레스스틸 봉을 링 형상으로 성형하고 양단을 서로 맞대어 용접하는 링 용접장치에 관한 것인데 보다 구체적인 것은 단면 2~5mm 되고 직경 7~10cm 되는 규격의 링을 양단부가 밀착되게 회전대에 장치하고 밀착부 외면 일정위치에 용접토치를 접촉시키고 피용접부를 270~300도 범위로 회전시켜 용접이 이루어지게 용접장치를 구성하고 용접시에 발생하는 빛이 작업자의 눈에 닿지 않도록 용접부와 작업자 사이에 승강형 차광막을 장치하여서 용접신호가 압력되면 PLC회로에 의하여 회전대가 입력된 회전각도 왕복회전하고 차광막이 승강되어 안전한 용접이 이루어 지게 한 구성이다.The present invention relates to a ring welding device for forming a stainless steel rod of a certain length in the shape of a ring and to weld the opposite ends to each other, more specifically, a ring having a diameter of 2 to 5 mm and a diameter of 7 to 10 cm to the swivel to be in close contact with both ends. The welding device is contacted to a certain position on the outer surface of the close contact portion, and the welded part is rotated within the range of 270 ~ 300 degrees to configure the welding device for welding, and the light generated during welding does not touch the worker's eyes. When the welding signal is pressed by the elevating shading film, the rotating angle inputted by the swivel is also reciprocated by the PLC circuit, and the shading film is lifted to make the welding safe.

종래의 링 제조기는 일정길이의 스테인레스스틸 봉으로 링형상을 성형하고 그 양단을 서로 맞댄 사이에 다른 금속을 개입시켜서 전류를 통하게 하면서 눌러 붙이는 전기 저항 용접방식인 버트(butt)용접으로 제조하기 때문에 작업이 비능률 적으로 되고 용접부분에 덧살이 많이 발생하므로 용접후에 이를 제거해야 하는 불편이 있었다.Conventional ring makers work by forming a ring shape with a stainless steel rod of a certain length, butt welding, which is an electric resistance welding method that presses while passing current through a different metal between the ends of each other. Since this becomes inefficient and a lot of debris is generated in the welded part, it was inconvenient to remove it after welding.

본 발명은 위와 같은 종래의 불편을 해소시킬 수 있도록 용접장치를 개발한 것이다.The present invention has developed a welding device to solve the above conventional inconvenience.

본 발명은 PLC 회로와 센서에 의하여 270~300도로 왕복 회전하는 회전축 중간부에 링형상의 부재를 고정시키는 장치부를 마련하고 링형상의 부재가 장치되는 위치에 알곤용접기의 토치를 장치하여 링형상의 부재연결부를 용접할 수 있게 하고 용접부와 작업자 사이에 승강형 차광막을 장치하여서 안전하고 신속하게 용접작업 없이이 달성되게 한 것이다.The present invention provides a device portion for fixing the ring-shaped member in the middle of the rotary shaft reciprocating 270 to 300 degrees by the PLC circuit and the sensor, and installs the torch of the argon welding machine at the position where the ring-shaped member is installed The member connection part can be welded and a lifting type light shielding film is provided between the welding part and the operator, so that it can be achieved safely and quickly without welding work.

이와 같이 된 본 발명은 별도의 성형장치에서 원형으로 성형되어 양단부가 용접되지 않은 링형상의 부재(16)를 양단부(16a)가 회전축의 부착판에 장치된 링고정판(6)(6a)의 간격부에 설치된 알곤 용접토치(11)에 근접되도록 고정홈에 삽입하고 링압착구(9b)가 양단부(16a)정면을 압착하게 작동시켜 링형상부재를 고정시키고 알곤용접기를 작동시키면 본 발명에 채용된 PLC 회로에 의하여 용접기가 작동하는 것과 때를 맞추어 서브모터가 작동하여 회전축이 시계 방향으로 270~300도를 회전하여 피용접부인 링형상의 부재(16) 양단부(16a) 둘레를 용접하고 용접이 종료하면 좌우회전 모터(4) 회전이 원위치되는 근접스위치센서에 의하여 원위치가 이루어지고 또한 PLC회로에 의하여 용접이 진행되는 동안 차광판이 하강하며 용접이 종료되면 차광판(15)이 상승하게 되고 용접이 종료되면 링압착구(9b)가 복귀하여 원취치하게 되는데 이러한 일련의 작동은 PLC 회로와 근접스위치 센서에 의하여 착오 없이 이루어지게 된다.According to the present invention as described above, the ring-shaped member 16, which is molded in a separate molding apparatus and is not welded at both ends, has a gap between the ring fixing plates 6 and 6a in which both ends 16a are mounted on the attachment plate of the rotating shaft. Inserted into the fixing groove so as to be close to the argon welding torch 11 installed in the part and the ring pressing hole (9b) is pressed to operate the front end of both ends (16a) to fix the ring-shaped member and to operate the argon welder adopted in the present invention In accordance with the time when the welding machine is operated by the PLC circuit, the sub-motor is operated so that the rotation axis rotates 270 to 300 degrees clockwise to weld around the both ends 16a of the ring-shaped member 16 to be welded, and the welding ends. When the left and right rotation motor (4) is rotated to the original position by the proximity switch sensor, and the shielding plate is lowered while the welding is in progress by the PLC circuit, the shielding plate 15 is raised when the welding is finished. When the welding is completed and the ring there is squeezed sphere (9b) returns to original chwichi this series of operation will be written without by PLC circuit and the proximity switch sensors and error.

이어서 링압착구(9b)가 원위치하면 링고정판에서 용접된 링을 인출하여 육안 검사한 후 제품상자에 담고 용접할 링형상 부재를 링고정판에 다시 고정시켜서 전과 같은 작업을 함으로써 연속적인 용접작업을 하게 되는 것이다.Then, when the ring crimping hole 9b is in the original position, the welded ring is drawn out from the ring fixing plate and visually inspected. Then, the ring-shaped member to be placed in the product box is fixed to the ring fixing plate again to perform continuous welding work. Will be.

이와 같이 본 발명은 링형상의 부재양단 피용접부를 용접할 때 회전시키면서 알곤용접이 가능하게 되므로 신속한 용접이 이루어지고 용접된 부위에 별도의 금속을 사용하지 않으므로 덧살 발생이 없어서 용접자국이 깨끗한 용접이 달성되는 효과가 있고 링형상의 소재를 장착하고 용접기를 작동시키면 차광막이 내려오고 회전축이 회전하는 것이 모두 PLC 회로와 근접스위치에 의하여 순차적으로 일어나게 프로그래밍 되어 있으므로 착오 없는 작업이 이루어지게 되며 본 장치에 사용되는 PLC 회로는 시중에서 사용되고 있는 방법을 이용하여 제작하므로 구체적인 설명을 생략하였다.Thus, in the present invention, since the argon welding can be performed while rotating the welded parts on both ends of the ring-shaped member, rapid welding is performed, and since no additional metal is used in the welded portion, there is no extortion, so that the welding marks are clean. When the ring-shaped material is mounted and the welding machine is operated, all of the shading film and the rotating shaft are programmed to occur sequentially by the PLC circuit and the proximity switch. PLC circuit is manufactured using a method that is commercially available, so a detailed description thereof is omitted.

본 발명은 작업대(1) 상면에 장치판(2)을 부착하여 중간부에 일정간격을 두고 동심선상에서 양측으로 배치한 축잡이(2a)(2b)와 축잡이에 장치되어 내측단에 각각 부착판(3b)(3c)이 장치되어 부착판 사이가 연결판(5)으로 연결되고 구동부 쪽에 위치하는 회전축(3)의 외측단부에 회전기어(3d)가 장착되어 장치판(2) 외측에 장치된 좌우회전 서브모터(4)의 감속기(4a) 출력회전축(4b)에 부착한 구동기어(4c)가 치합되어 좌우회전 서브모터의 회전에 의하여 구동하는 회전축(3)(3a)과 The present invention is attached to the mounting plate (2a) on the upper surface of the worktable (1) and attached to the inner end of each of the grippers (2a) (2b) and the grippers arranged on both sides on a concentric line with a certain interval in the middle part. Plates 3b and 3c are mounted so that the attachment plate is connected by a connecting plate 5, and a rotary gear 3d is mounted on the outer end of the rotating shaft 3 located on the drive side, so that the device is located outside the device plate 2. A driving gear 4c attached to the output reduction shaft 4b of the reduced left and right rotating submotor 4 is engaged with the rotating shafts 3 and 3a driven by the rotation of the left and right rotating submotors.

회전축(3)(3a)의 내측 부착판(3b)(3c)사이에 체결구로 체결되며 "

Figure 112008081817221-PAT00001
" 형상으로 되어 중앙통공부(5a)에서 일측으로 개방부(5b)가 형성된 연결판(5)과 Fasteners are fastened between the inner mounting plates 3b and 3c of the rotary shafts 3 and 3a,
Figure 112008081817221-PAT00001
And the connecting plate 5 having the opening portion 5b formed at one side from the central through portion 5a.

개방부(5b) 양측 정면에 부착되고 원호상으로 형성된 링삽입홈(6b)이 구비된 링고정판(6)(6a)과 Ring fixing plates 6 and 6a attached to both sides of the opening part 5b and provided with an arc-shaped ring inserting groove 6b;

회전축(3)(3a)의 부착판(3b)(3c) 정면측에 부착된 고정판(8)(8a)에 부착되어 그 작동로드에 링압착구(9b)가 부착된 압착실린더(9)(9a)와 A compression cylinder 9 attached to a fixed plate 8, 8a attached to the front side of the attachment plate 3b, 3c of the rotating shaft 3, 3a, and having a ring crimp 9b attached to its working rod. 9a) and

연결판(5)의 배면측에서 중앙통공부(5a)를 통해 링고정판(6)(6a)의 간격부로 투입되어 링용접부에 위치하는 알곤용접 용접토치(11)와 Argon welding welding torch 11, which is fed from the rear side of the connecting plate 5 through the central through hole 5a to the gap between the ring fixing plates 6 and 6a and is located in the ring welding portion.

용접토오치에 알곤가스를 공급하여 알곤용접 작업을 하는 알곤용접기(10)와Argon welding machine (10) for argon welding work by supplying argon gas to the welding torch

작업대(1) 전면 양측에 수직으로 세워지는 지지대(12) 상단부에 축잡이(12a)가 형성되어 회전축봉(13)이 가설되고 회전축봉 일측 돌단에 회전기어(13a)가 부착되어 지지대(12)에 부착된 유체압실린더(14)의 작동축(14a)에 부착된 랙크기 어(14b)와의 치합되어 회전축봉(13)에 감겨지고 풀리는 작동으로 작업대 전면에서 수직으로 승강하는 차광판(15)과 A shaft holder 12a is formed at the upper end of the support 12 vertically standing on both sides of the worktable 1 so that the rotary shaft rod 13 is installed, and the rotary gear 13a is attached to one end of the rotary shaft rod, thereby supporting the support 12. Light-shielding plate 15 which is vertically lifted from the front of the workbench by being engaged with the rack gear 14b attached to the operation shaft 14a of the fluid pressure cylinder 14 attached to the rotary shaft rod 13 and being unwound.

용접기의 작동신호에 의하여 서브모터를 작동시켜 회전축을 구동시키고 근접스위치센서를 이용하여 회전축의 회전각도 270~300도로 제어하며 용접기 작동과 관련하여 차광막을 승강시키는 유체압실린더(14)를 작동시키고 링압착구(9b)를 동작시키는 유체압실린더(9)(9a)를 순차적으로 작동시키도록 프로그래밍된 PLC 회도로 이루어지는 구성이다.The sub-motor is operated by the operation signal of the welding machine to drive the rotating shaft, and the rotation angle of the rotating shaft is controlled by the proximity switch sensor to 270-300 degrees. The configuration consists of a PLC circuit programmed to sequentially operate the fluid pressure cylinders 9 and 9a for operating the crimp 9b.

도 1은 본 발명의 전체적인 사시도1 is an overall perspective view of the present invention

도 2는 도 1의 일부 사시도2 is a partial perspective view of FIG. 1

도 3(a)(b)는 연결판 부분 사시도Figure 3 (a) (b) is a perspective view of the connecting plate

도 4는 용접되는 예시도4 is an exemplary view to be welded

도 5는 도 1의 정면도5 is a front view of FIG. 1

도 6은 도 1의 평면도6 is a plan view of FIG.

도 7(a)(b)는 도 1의 일부 사시도(A) and (b) are partial perspective views of FIG.

도 8은 차광막이 하강한 사시도8 is a perspective view of the shielding film is lowered

도 9는 연결판이 300도 회전한 사시도9 is a perspective view of the connecting plate rotated 300 degrees

도 10는 도 9의 평면도10 is a top view of FIG. 9

도 11은 도 1의 좌측면도FIG. 11 is a left side view of FIG. 1

도 12는 도 1의 우측면도12 is a right side view of FIG.

도 13(a)(b)는 링형상 부재 부분 사시도이다.Fig. 13A and Fig. 13B are partial perspective views of the ring-shaped member.

* 도면의 주요부분에 대한 부호설명* Explanation of symbols on the main parts of the drawings

1 : 작업대 2 : 장치판1: worktable 2: device plate

2a,2b : 축잡이 3 : 회전축2a, 2b: shaft holder 3: rotation axis

3,3a : 회전축 3b : 회전기어3,3a: rotating shaft 3b: rotating gear

3b,3c : 부착판 4 : 모터3b, 3c: mounting plate 4: motor

4a : 감속기 4b : 출력회전축4a: Reducer 4b: Output Rotary Shaft

4c : 구동기어 5 : 연결판4c: drive gear 5: connecting plate

5a : 중앙통공부 5b : 개방부5a: Central through hole 5b: Opening part

6,6a : 링고정판 6b : 링삽입홈6,6a: ring fixing plate 6b: ring insertion groove

8,8a : 고정판 9,9a : 압착실린더8,8a: fixing plate 9,9a: crimping cylinder

9b : 링압착구 10 : 알곤용접기9b: ring press 10: argon welding machine

11 : 용접토치 12 : 지지대11 welding torch 12 support

13 : 회전축봉 13a : 회전기어13: rotating shaft rod 13a: rotating gear

14 : 유체압실린더 14a : 작동축14 fluid cylinder 14a operating shaft

14b : 랙크기어 15 : 차광판14b: rack gear 15: shading plate

16 : 링형상의부재 16a : 양단부16: ring-shaped member 16a: both ends

Claims (1)

작업대(1) 상면에 장치판(2)을 부착하여 중간부에 일정간격을 두고 동심선상에서 양측으로 배치한 축잡이(2a)(2b)와 Attaching the device plate 2 to the upper surface of the work table 1 and the shaft holder (2a) (2b) and arranged on both sides on the concentric line at a certain interval in the middle 축잡이에 장치되어 내측단에 각각 부착판(3b)(3c)이 장치되어 부착판 사이가 연결판(5)으로 연결되고 구동부 쪽에 위치하는 회전축(3)의 외측단부에 회전기어(3d)가 장착되어 장치판(2) 외측에 장치된 좌우회전 서브모터(4)의 감속기(4a) 출력회전축(4b)에 부착한 구동기어(4c)가 치합되어 좌우회전 서브모터의 회전에 의하여 구동하는 회전축(3)(3a)과 Attached to the shaft, the mounting plate (3b) (3c) is installed at the inner end respectively, the connecting plate is connected between the connecting plate (5) and the rotary gear (3d) at the outer end of the rotating shaft (3) located on the drive side Rotating shaft which is mounted and attached to the output gear shaft 4b of the reduction gear 4a of the left / right rotation sub-motor 4 installed outside the device plate 2, and is driven by rotation of the left / right rotation submotor. (3) (3a) and 회전축(3)(3a)의 내측 부착판(3b)(3c)사이에 체결구로 체결되며 "
Figure 112008081817221-PAT00002
" 형상으로 되어 중앙통공부(5a)에서 일측으로 개방부(5b)가 형성된 연결판(5)과 Fasteners are fastened between the inner mounting plates 3b and 3c of the rotary shafts 3 and 3a,
Figure 112008081817221-PAT00002
And the connecting plate 5 having the opening portion 5b formed at one side from the central through portion 5a. 개방부(5b) 양측 정면에 부착되고 원호상으로 형성된 링삽입홈(6b)이 구비된 링고정판(6)(6a)과 Ring fixing plates 6 and 6a attached to both sides of the opening part 5b and provided with an arc-shaped ring inserting groove 6b; 회전축(3)(3a)의 부착판(3b)(3c) 정면측에 부착된 고정판(8)(8a)에 부착되어 그 작동로드에 링압착구(9b)가 부착된 압착실린더(9)(9a)와 A compression cylinder 9 attached to a fixed plate 8, 8a attached to the front side of the attachment plate 3b, 3c of the rotating shaft 3, 3a, and having a ring crimp 9b attached to its working rod. 9a) and 연결판(5)의 배면측에서 중앙통공부(5a)를 통해 링고정판(6)(6a)의 간격부로 투입되어 링용접부에 위치하는 알곤용접 용접토치(11)와 Argon welding welding torch 11, which is fed from the rear side of the connecting plate 5 through the central through hole 5a to the gap between the ring fixing plates 6 and 6a and is located in the ring welding portion. 용접토오치에 알곤가스를 공급하여 알곤용접 작업을 하는 알곤용접기(10)와Argon welding machine (10) for argon welding work by supplying argon gas to the welding torch 작업대(1) 전면 양측에 수직으로 세워지는 지지대(12) 상단부에 축잡이(12a) 가 형성되어 회전축봉(13)이 가설되고 회전축봉 일측 돌단에 회전기어(13a)가 부착되어 지지대(12)에 부착된 유체압실린더(14)의 작동축(14a)에 부착된 랙크기어(14b)와의 치합되어 회전축봉(13)에 감겨지고 풀리는 작동으로 작업대 전면에서 수직으로 승강하는 차광판(15)과 A shaft holder 12a is formed at the upper end of the support 12 vertically standing on both sides of the worktable 1 so that the rotary shaft rod 13 is installed, and the rotary gear 13a is attached to one end of the rotary shaft rod to support the support 12. Light-shielding plate 15 which is vertically lifted from the front of the workbench by being engaged with the rack-size gear 14b attached to the working shaft 14a of the fluid pressure cylinder 14 attached to the rotating shaft rod 13 and being unwound. 용접기의 작동신호에 의하여 서브모터를 작동시켜 회전축을 구동시키고 근접센서를 이용하여 회전축의 회전각도 270~300도를 제어하며 용접기 작동과 관련하여 차광막을 승강시키는 유체압실린더(14)를 작동시키고 링압착구(9b)를 동작시키는 유체압실린더(9)(9a)를 순차적으로 작동시키도록 프로그래밍된 PLC 회도로 이루어진 스테인레스스틸 링의 용접장치The sub-motor is operated by the operation signal of the welding machine to drive the rotating shaft, and by using the proximity sensor, the rotation angle of the rotating shaft is controlled from 270 to 300 degrees. Welding device of stainless steel ring made of PLC circuit programmed to sequentially operate fluid pressure cylinders 9 and 9a for operating the crimp 9b.
KR1020080118662A 2008-11-27 2008-11-27 welding installation ring of stainless steel KR101075680B1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
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CN102350601A (en) * 2011-09-19 2012-02-15 上海依赛工业有限公司 Tooling clamp table for welding automobile back cover hinge element
CN103737152A (en) * 2014-01-22 2014-04-23 淮南巨万实业有限责任公司 Method for manufacturing anticorrosion hydraulic support upright by welding hole shrinkage
CN103921034A (en) * 2014-04-18 2014-07-16 诸暨市中汽机械零部件有限公司 Welding device for gearbox bracket
CN104874963A (en) * 2015-06-13 2015-09-02 聂超 Welding head and welding method
CN105149804A (en) * 2015-10-08 2015-12-16 江苏诚天机械有限公司 Pneumatic circumference welding equipment
CN105345328A (en) * 2015-11-28 2016-02-24 陈伟 Rotary welding device and method for steel ring
CN110125535A (en) * 2018-02-07 2019-08-16 上海中船电气有限公司 Laser girth welding machine
CN116586846A (en) * 2023-07-11 2023-08-15 西安奥若特材料技术有限公司 Metal pipeline machining device capable of automatically adjusting welding pressure

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102350601A (en) * 2011-09-19 2012-02-15 上海依赛工业有限公司 Tooling clamp table for welding automobile back cover hinge element
CN103737152A (en) * 2014-01-22 2014-04-23 淮南巨万实业有限责任公司 Method for manufacturing anticorrosion hydraulic support upright by welding hole shrinkage
CN103921034A (en) * 2014-04-18 2014-07-16 诸暨市中汽机械零部件有限公司 Welding device for gearbox bracket
CN104874963A (en) * 2015-06-13 2015-09-02 聂超 Welding head and welding method
CN105149804A (en) * 2015-10-08 2015-12-16 江苏诚天机械有限公司 Pneumatic circumference welding equipment
CN105345328A (en) * 2015-11-28 2016-02-24 陈伟 Rotary welding device and method for steel ring
CN110125535A (en) * 2018-02-07 2019-08-16 上海中船电气有限公司 Laser girth welding machine
CN116586846A (en) * 2023-07-11 2023-08-15 西安奥若特材料技术有限公司 Metal pipeline machining device capable of automatically adjusting welding pressure
CN116586846B (en) * 2023-07-11 2023-09-22 西安奥若特材料技术有限公司 Metal pipeline machining device capable of automatically adjusting welding pressure

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