KR0131016Y1 - Cutting device for transfer - Google Patents
Cutting device for transfer Download PDFInfo
- Publication number
- KR0131016Y1 KR0131016Y1 KR2019950021013U KR19950021013U KR0131016Y1 KR 0131016 Y1 KR0131016 Y1 KR 0131016Y1 KR 2019950021013 U KR2019950021013 U KR 2019950021013U KR 19950021013 U KR19950021013 U KR 19950021013U KR 0131016 Y1 KR0131016 Y1 KR 0131016Y1
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- South Korea
- Prior art keywords
- gear
- guide rail
- hydraulic cylinder
- cutting
- cutting device
- Prior art date
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Classifications
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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
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/002—Machines, apparatus, or equipment for cutting plane workpieces, e.g. plates
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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
- B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
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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
- B23K37/0288—Carriages forming part of a cutting unit
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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
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
- B23K7/102—Auxiliary devices, e.g. for guiding or supporting the torch for controlling the spacial relationship between the workpieces and the gas torch
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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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Shearing Machines (AREA)
Abstract
본 고안은 공작물의 이동없이 절단작업이 가능한 이동용 절단장치에 관한 것으로, 절단장치의 몸체 전체를 지지함과 동시에 고무바퀴(20)에 의해 자유로이 이동되는 본체(10)의 내부에 동력발생용 유압펌프(14)가 설치되며, 유압펌프(14)에는 수직방향으로 높이조절용 유압실린더(30)와 각도조절용 유압실린더(30')가 각각 설치되고, 높이조절용 유압실린더(30)의 실린더로드에 구비된 힌지축(45)과 각도조절용 유압실린더(30')의 실린더로드에 구비된 제1랙기어(32)에는 힌지축(45)에 의해 회동함과 동시에 제1랙기어(32)에 치합된 제1피니언기어(42)를 통해 각도가 조절되는 가이드레일(40)이 설치되며, 가이드레일(40)에 구비된 제2랙기어(41)에는 제2피니언기어(53)를 통해 가이드레일(40)을 따라 전후이송되는 전동장치(50)가 치차결합되는 한편, 전동장치(50)에는 연료공급용 호스(52,52')를 통해 공급되어진 열원을 이용하여 경계면(B)을 절단시키도록 된 토오치(51,51')가 설치된 구조로 이루어져, 불규칙한 형상과 절단부위를 갖는 공작물일지라고 유압실린더와 가이드레일 및 전동장치에 의해 원하는 형상으로 자동절단되므로, 절단작업에 따른 인력 및 경비를 줄일 수 있게 한 것이다.The present invention relates to a mobile cutting device capable of cutting without moving a workpiece, and supports the entire body of the cutting device and at the same time the hydraulic pump for power generation inside the main body 10 that is freely moved by the rubber wheel 20 14 is installed, the hydraulic pump 14 is provided with a hydraulic cylinder 30 for height adjustment and a hydraulic cylinder 30 'for angle adjustment in the vertical direction, respectively, provided in the cylinder rod of the hydraulic cylinder for height adjustment (30) The first rack gear 32 provided in the cylinder rod of the hinge shaft 45 and the angle-adjustable hydraulic cylinder 30 'is rotated by the hinge shaft 45 and simultaneously engaged with the first rack gear 32. A guide rail 40 whose angle is adjusted through the first pinion gear 42 is installed, and the second rail gear 41 provided in the guide rail 40 is guide rail 40 through the second pinion gear 53. The gear 50 which is moved back and forth along the gears is geared and coupled to the gear 50. Torch 51, 51 'is provided to cut the boundary surface B using a heat source supplied through the supply hoses 52, 52', so that the workpiece has an irregular shape and a cut part. Since the hydraulic cylinder, the guide rail and the automatic cutting to the desired shape by the transmission device, it is possible to reduce the manpower and expense according to the cutting work.
Description
본 고안은 불규칙한 공작물을 절단하기 위한 절단장치에 관한 것으로, 특히 공작물을 이동하지 않은 상태에서 원하는 형상으로 절단시킬 수 있도록 된 이동용 절단장치에 관한 것이다.The present invention relates to a cutting device for cutting irregular workpieces, and more particularly to a mobile cutting device that can be cut to the desired shape without moving the workpiece.
일반적으로, 중량체를 이동하는 데에 주로 사용되는 벨트컨베이어는 풀리나드럼에 의해 구동되는데, 이러한 풀리나 드럼과 같이 불규칙한 형상을 갖는 공작물은 벤딩로울러 등을 이용하여 원통형상으로 일단 성형한다.In general, a belt conveyor mainly used to move a weight is driven by a pulley drum, and a workpiece having an irregular shape such as a pulley or a drum is once formed into a cylindrical shape using a bending roller or the like.
그리고, 벤딩로울러에 의해 성형되지 않은 단부를 직선 또는 일정한 각도로 절단하여 용접하기에 적합한 절단면을 형성하므로써, 용접하는 과정에서 양호한 접합상태를 유지하게 되는 것이다.In addition, by forming a cutting surface suitable for welding by cutting the end portion which is not formed by the bending roller at a straight line or at a constant angle, it is possible to maintain a good bonding state in the welding process.
즉, 도1에 개략적으로 도시한 바와 같이,철판을 다수개의 벤딩로울러(101,102,103)를 통해 압착하여 원통형상으로 성형한 후에, 단부를 이루는 경계면(도면상 이점쇄선)을 절단기구를 이용하여 절단한 다음, 절단면을 통해 원하는 형상으로 제조하게 되는 것이다.That is, as schematically shown in Figure 1, after pressing the steel plate through a plurality of bending rollers (101, 102, 103) to form a cylindrical shape, the boundary surface (dotted dashed line on the drawing) forming the end is cut using a cutting tool Next, it is to be produced in the desired shape through the cut surface.
그런데, 상기한 공작물의 단부를 이루는 경계면을 절단하는 경우에, 절단치구나 별도의 가시설물을 만들어 놓고 이를 이용하여 공작물을 이동시켜가면서 절단작업을 행하게 되므로, 절단면이 고르지 못하게 되면서 양질의 제품을 얻기가 어렵다는 문제점이 있었다.By the way, in the case of cutting the interface forming the end of the workpiece, the cutting jig or a separate temporary object is made and the cutting operation is performed while moving the workpiece by using the same, so that the cutting surface becomes uneven to obtain a good product. There was a problem that is difficult.
이에, 본 고안은 상기한 바와 같은 문제점을 해결하기 위하여 안출한 것으로서, 랙과 피니언기어 및 유압실린더와 유압펌프를 이용하여 공작물을 이동하지 않은 상태에서도 어떤 위치에서나 공작물의 단부를 자동으로 절단시킬 수 있도록 된 이동용 절단장치를 제공하는 데에 그 목적이 있다.Accordingly, the present invention has been devised to solve the problems described above, using the rack and pinion gear, the hydraulic cylinder and the hydraulic pump can automatically cut the end of the workpiece at any position without moving the workpiece. It is an object of the present invention to provide a mobile cutting device.
도1의 (가),(나)는 종래 기술에 따른 드럼의 성형동작을 도시한 개략적인 정면도와 사시도,Figure 1 (a), (b) is a schematic front view and a perspective view showing the forming operation of the drum according to the prior art,
도2는 본 고안에 따른 전체사시도,2 is a perspective view according to the present invention,
도3은 본 고안에 따는 유압펌프의 사시도,3 is a perspective view of a hydraulic pump according to the present invention,
도4는 본 고안에 따른 가이드레일의 동작상태를 도시한 사시도,Figure 4 is a perspective view showing the operating state of the guide rail according to the present invention,
도5는 본 고안에 따른 동력전달장치의 사시도.5 is a perspective view of a power transmission device according to the present invention.
도6은 본 고안에 따른 동작상태를 도시한 사시도이다.6 is a perspective view showing an operating state according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 본체 14 : 유압펌프10: main body 14: hydraulic pump
20 : 고무바퀴 30,30' : 유압실린더20: rubber wheel 30,30 ': hydraulic cylinder
32,41 : 제1,2랙기어 40 : 가이드레일32,41: 1st, 2nd rack gear 40: guide rail
42,53 : 제1,2피니언기어 43 : 손잡이42,53: 1st, 2nd pinion gear 43: Handle
50 : 전동장치 51,51' : 토오치50: electric drive 51, 51 ': torch
이하, 본 고안에 따른 실시예를 첨부된 예시도면을 참조로하여 상세하게 설며하면 다음과 같다.Hereinafter, described in detail with reference to the accompanying drawings, an embodiment according to the present invention as follows.
도2는 본 고안에 따른 전체사시도이고, 도3은 본 고안에 따른 유압펌프의 사시도이며, 도4는 본 고안에 따는 가이드레일의 동작상태를 도시한 사시도이고, 도5는 본 고안에 따른 동럭전달장치의 사시도이며, 도6은 본 고안에 따른동작상태를 도시한 사시도로서, 이들 도면에 도시된 바와 같이,Figure 2 is a full perspective view according to the present invention, Figure 3 is a perspective view of a hydraulic pump according to the present invention, Figure 4 is a perspective view showing the operating state of the guide rail according to the present invention, Figure 5 is a dynamic according to the present invention Figure 6 is a perspective view of the delivery device, Figure 6 is a perspective view showing an operating state according to the present invention, as shown in these figures,
금속판압착용 벤딩로울러(101,102,103)에 의해 일정형상으로 성형된 금속판(C)의 불규칙한 압착면을 용접하기에 적합한 규칙적인 경계면(B)으로 절단하기 위한 절단장치에 있어서,In the cutting device for cutting the irregular pressing surface of the metal plate (C) formed in a certain shape by the metal plate pressing bending rollers (101, 102, 103) to a regular interface (B) suitable for welding,
절단장치의 몸체 전체를 지지함과 동시에 고무바퀴(20)에 의해 자유로이 이동되는 본체(10)의 내부에 동력발생용 유압펌프(14)가 설치되며, 유압펌프(14)에는 수직방향으로 높이조절용 유압실린더(30)와 각도조절용 유압실린더(30')가 각각 설치되고, 높이 조절용 유압실린더(30)의 실리더로드에 구비된 힌지축(45)과 각도조절용 유압실린더(30')의 실린더로드에 구비된 제1랙기어(32)에는 힌지축(45)에 의해 회동함과 동시에 제1랙기어(32)에 치합된 제1피니언기어(42)를 통해 각도가 조절되는 가이드레일(40)이 설치되며, 가이드레일(40)에 구비된 제2랙기어(41)에는 제2피니언기어(53)를 통해 가이드레일(40)을 따라 전후이송되는 전동장치(50)가 치차결합되는 한편, 전동장치(50)에는 연료공급용 호스(52,52')를 통해 공급되어진 열원을 이용하여 경계면(B)을 절단시키도록 된 토오치(51,51')가 설치된 구조로 되어 있다.A hydraulic generating pump 14 for power generation is installed inside the main body 10 that is freely moved by the rubber wheel 20 while supporting the entire body of the cutting device, and the hydraulic pump 14 is used for height adjustment in the vertical direction. The hydraulic cylinder 30 and the angle adjustment hydraulic cylinder 30 'are respectively installed, and the cylinder rod of the hinge shaft 45 and the angle adjustment hydraulic cylinder 30' provided in the cylinder rod of the height adjustment hydraulic cylinder 30 are provided. The guide rail 40 is rotated by the hinge shaft 45 and the angle is adjusted by the first pinion gear 42 engaged with the first rack gear 32. Is installed, the transmission gear 50 which is moved back and forth along the guide rail 40 via the second pinion gear 53 is provided on the second rack gear 41 provided on the guide rail 40, while The transmission device 50 is cut by the interface B by using a heat source supplied through the fuel supply hoses 52 and 52 '. Torch 51 and 51 'is provided.
여기서, 본체(10)는 골격을 형성하게 되는 다수의 프레임(11)과 이 프레임(11)의 외측에 부착되어 미관을 형성하게 되는 철판(12)과 이 철판(12)의 상단에 설치된 운반용 손잡이(13)로 구성된다.Here, the main body 10 is a plurality of frames 11 to form a skeleton and the iron plate 12 is attached to the outside of the frame 11 to form an aesthetic appearance and a transport handle installed on the upper end of the iron plate 12 It consists of (13).
그리고, 유압펌프(14)는 본체(10)에 내장된 상태에서 두 개의 유압실린더를 작동시킬 수 있는 복동식 유압펌프로서, 본체(10)의 바닥면에 보울트와 같은 체결수단을 통해 고정되어 있다.In addition, the hydraulic pump 14 is a double acting hydraulic pump capable of operating two hydraulic cylinders in a state of being embedded in the main body 10, and is fixed to the bottom surface of the main body 10 through a fastening means such as a bolt. .
또한, 유압펌프(10)는 도3에 도시된 바와 같이, 상면에 내부압력을 점검하기 위한 압력계(17)와 유압펌프(10)를 작동 또는 제어하기 위한 작동레버(15)가 각각 설치되며, 측면에 전원을 공급하기 위한 전원플러그(16)와 작동유체를 공급하기위한 호스(18)와 작동유체의 양을 측정하기 위한 유량계(19) 등의 기기가 각각 설치되어 있다.In addition, the hydraulic pump 10, as shown in Figure 3, the pressure gauge 17 for checking the internal pressure and the operating lever 15 for operating or controlling the hydraulic pump 10 is installed on the upper surface, respectively, Devices such as a power plug 16 for supplying power to the side, a hose 18 for supplying a working fluid, and a flow meter 19 for measuring the amount of working fluid are provided.
그리고, 고무바퀴(20)는 본체(10)의 하중 전체를 지탱함과 동시 이동을 원할하게 수행하기 위한 내열성 또는 내유성이 우수한 고무재질로서, 구형상의 360o회전이 가능하며, 몸체에는 절단장치의 유동을 방지하기 위한 브레이크(21)가 구비되어 있다.The rubber wheel 20 is a rubber material having excellent heat resistance or oil resistance for smoothly carrying the entire load of the main body 10 and simultaneously moving the spherical body. The spherical 360 o rotation is possible, and the body has a cutting device. A brake 21 is provided to prevent flow.
한편, 유압실린더(30,30')는 유압펌프(14)에 의해 높이 조절이 가능하며, 이유압실린더(30,30')중 어느 하나를 구성하는 유압실린더(30')의 피스톤로드(31')에는 전후방향으로 제1랙기어(32)가 고정되어 있다.Meanwhile, the hydraulic cylinders 30 and 30 'can be height-adjusted by the hydraulic pump 14, and the piston rod 31 of the hydraulic cylinder 30' constituting any one of the weaning pressure cylinders 30 and 30 '. '), The first rack gear 32 is fixed in the front-rear direction.
그리고, 가이드레일(40)은 도4에 도시된 바와 같이, 그 중앙부분이 유압실린더(30)의 피스톤로드(31)에 힌지축(45)을 통하여 좌우회동가는하게 지지되고, 그 상단에 길이방향으로 제2랙기어(41)가 고정되며, 저면에는 손잡이(43)에 의해 회전하면서 제1랙기어(32)와 치차접속되어 전후각도를 조절하도록 된 제1피니언기어(42)가 설치되어 있다.And, as shown in Figure 4, the guide rail 40, the central portion is supported by the piston rod 31 of the hydraulic cylinder 30 so as to rotate left and right through the hinge shaft 45, the length at the top The second rack gear 41 is fixed in the direction, and the first pinion gear 42 which is connected to the first rack gear 32 and gears to adjust the front and rear angles while being rotated by the handle 43 on the bottom surface is installed. have.
물론, 가이드레일(40)의 양단에는 전동장치(50)의 추락을 방지하기 위한 스토퍼(44)가 장착된다.Of course, both ends of the guide rail 40 is equipped with a stopper 44 for preventing the fall of the transmission 50.
또한, 전동장치(50)는 도5에 도시된 바와 같이, 전후양쪽으로 두 개의 토오치(51,51')와 연료를 공급하기 위한 호스(52,52')가 구비되며, 저면에는 제2랙기어(41)와 치차접속도는 제2피니언기어(53)가 설치되고, 내부에는 제2피니언기어(53)의 구동원인 모우터와 연료분배수단이 각각 내장설치되어 있다.In addition, the transmission 50 is provided with two torches 51 and 51 'and hoses 52 and 52' for supplying fuel to both front and rear, as shown in FIG. In the gear connection diagram with the rack gear 41, a second pinion gear 53 is provided, and a motor and a fuel distribution means, which are the driving sources of the second pinion gear 53, are internally installed therein.
이하, 본 고안에 따른 작용을 첨부된 예시도면을 참조로하여 상세하게 설명하면 다음과 같다.Hereinafter, described in detail with reference to the accompanying drawings illustrating the operation according to the present invention.
먼저, 본 고안은 도6에서 개략적으로 도시한 바와 같이, 절단가공을 하고자하는 형상이 불규칙하고 절단가공부위가 일정각도로 기울어져 있어 절단작업이 매우 어려울 경우에도 손쉽게 훤하는 부위를 원하는 형태로 절단 할 수 있게 되는 것이다.First, the present invention, as schematically shown in Figure 6, the shape to be cut is irregular and the cutting part is inclined at a certain angle so that even if the cutting operation is very difficult to cut the part to be easily cut into the desired shape You can do it.
즉, 고무바퀴(20)를 이용하여 본체(10)를 적당한 절단위치에 고정시킨 후에, 유압펌프(14)로 두 개의 유압실린더(30,10')를 작동시켜 가이드레일(40)을 높이와 각도를 조절한 다음, 손잡이(43)로 피니언기어(42)를 작동시켜 가이드레일의 전후각도를 조절하고, 전동장치(50)를 작동시키면 된다.That is, after fixing the main body 10 to the appropriate cutting position using the rubber wheel 20, by operating the two hydraulic cylinders (30, 10 ') with the hydraulic pump 14 to raise the guide rail 40 and After adjusting the angle, the pinion gear 42 is operated by the handle 43 to adjust the front and rear angles of the guide rail, and the electric device 50 may be operated.
이렇게 하면, 피니언기어(53)에 의해 전동장치(50)의 몸체 전체가 가이드레일(40)을 따라 기설정된 높이와 각도 및 방향을 따라 이동하게 되므로, 토오치(51,51')에 의해 공작물을 원하는 형태로 절단되는 것이다.In this case, the entire body of the transmission 50 is moved by the pinion gear 53 along the guide rail 40 along the predetermined height, angle, and direction, so that the workpiece is formed by the torch 51, 51 '. It will be cut into the desired shape.
물론, 상기한 절단장치는 용접장치를 겸용할 수 있다.Of course, the cutting device described above can also serve as a welding device.
이상에서 설명한 바와 같이 본 고안에 따른 이동용 절단장치에 의하면, 불규칙한 형상과 절단부위를 갖는 공작물일지라고 유압실린더와 가이드레일 및 전동장치에 의해 원하는 형상으로 자동절단되므로, 절단작업에 따른 인력 및 경비를 줄일 수 있는 효과가 있다.As described above, according to the mobile cutting device according to the present invention, a work piece having an irregular shape and a cutting part is automatically cut into a desired shape by a hydraulic cylinder, a guide rail, and a transmission device. There is an effect that can be reduced.
또한, 어느 위치에서나 공작물의 이동없이 직선 및 경사절단이 가능하게 되면서 양질의 절단면을 얻을 수 있게 되므로, 겁합면의 크랙이 사전에 방지될 뿐만 아니라 미려한 외관을 얻을 수 있는 효과가 있는 것이다.In addition, since it is possible to obtain a high-quality cutting surface while being able to make straight and inclined cutting at any position without moving the workpiece, cracks on the rough surface are not only prevented in advance, but also have a beautiful appearance.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950021013U KR0131016Y1 (en) | 1995-08-16 | 1995-08-16 | Cutting device for transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950021013U KR0131016Y1 (en) | 1995-08-16 | 1995-08-16 | Cutting device for transfer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970008300U KR970008300U (en) | 1997-03-27 |
| KR0131016Y1 true KR0131016Y1 (en) | 1999-01-15 |
Family
ID=19420791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019950021013U KR0131016Y1 (en) | 1995-08-16 | 1995-08-16 | Cutting device for transfer |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0131016Y1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100861695B1 (en) * | 2007-01-12 | 2008-10-07 | 삼성중공업 주식회사 | Lug welding robot system and welding method |
| KR101382756B1 (en) * | 2012-05-10 | 2014-04-08 | 주식회사 포스코 | Treatment unit for welding material and apparatus having thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100731475B1 (en) * | 2005-12-30 | 2007-06-21 | 삼성에스디아이 주식회사 | Moving device of plasma display device |
-
1995
- 1995-08-16 KR KR2019950021013U patent/KR0131016Y1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100861695B1 (en) * | 2007-01-12 | 2008-10-07 | 삼성중공업 주식회사 | Lug welding robot system and welding method |
| KR101382756B1 (en) * | 2012-05-10 | 2014-04-08 | 주식회사 포스코 | Treatment unit for welding material and apparatus having thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970008300U (en) | 1997-03-27 |
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