KR810001069Y1 - Electric-arc welding machine - Google Patents

Electric-arc welding machine Download PDF

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Publication number
KR810001069Y1
KR810001069Y1 KR7905826U KR790005826U KR810001069Y1 KR 810001069 Y1 KR810001069 Y1 KR 810001069Y1 KR 7905826 U KR7905826 U KR 7905826U KR 790005826 U KR790005826 U KR 790005826U KR 810001069 Y1 KR810001069 Y1 KR 810001069Y1
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South Korea
Prior art keywords
relay
transformer
secondary side
welding machine
contact
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KR7905826U
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Korean (ko)
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이명호
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이명호
박경규
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Publication of KR810001069Y1 publication Critical patent/KR810001069Y1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/10Other electric circuits therefor; Protective circuits; Remote controls

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)

Abstract

내용 없음.No content.

Description

전기 용접기의 무부하 단전회로No-load single circuit of electric welding machine

첨부 도면은 본 고안의 회로도.The accompanying drawings are circuit diagrams of the present invention.

본 고안은 전기 용접기의 무부하 단전회로에 관한 것으로, 전원측에 연결된 보조트랜스의 2차측과 주트랜스의 2차측 사이에 임피던스 대칭용 쵸크코일을 직렬로 접속하여 용접봉이 피용접 물체에 접촉되는 순간 주트랜스 2차측인 용접회로의 임피던스가 감소하고 전류가 증가하게 하여 쵸크코일 2차측에 전압이 검출되어 전원 연결용 릴레이를 구동시키게 하고 따라서 주트랜스의 접점 개폐용구동 릴레이를 동작시켜 주트랜스의 1차측에 전원을 가하게 하므로서 용접기에 전원을 공급하게 하고, 용접 중단에나 종료시에는 보조릴레이가 동작되어 전원 연결용 릴레이를 소거시키게 하여 주트랜스의 1차측 선로를 개방시키게 하므로서 무부하시에 불필요하게 낭비되는 전력손실을 방지할 수 있도록 한 것이다.The present invention relates to a no-load single-circuit circuit of an electric welder. The main transformer is connected to the object to be welded by connecting a choke coil for impedance symmetry in series between the secondary side of the auxiliary transformer connected to the power supply side and the secondary side of the main transformer. The impedance of the welding circuit on the secondary side is reduced and the current is increased so that the voltage is detected on the choke coil secondary side to drive the relay for power connection. Therefore, the contact opening / closing drive relay of the main transformer is operated to the primary side of the main transformer. Power is supplied to the welding machine by applying power, and the auxiliary relay is operated at the time of stopping or terminating the welding to erase the power connection relay, thereby opening the primary line of the main transformer, thereby eliminating unnecessary power loss during no load. It is to prevent.

종래의 전기 용접기는 용접을 하지 않는 무부하시에도 주트랜스에 전원이 인가되어 있는 상태가 지속되게 되므로서 주트랜스의 자체 전력 소모로 인한 전력 손실이 매우 커 비경제적인 결함이 있었을 뿐만 아니라, 용접회로에 항상 높은 전압이 인가되어 있는 상태이므로서 누전에 의한 감전 사고가 유발될 수 있는 위험성이 항상 뒤따르고 있었다.The conventional electric welding machine maintains a state in which power is supplied to the main transformer even when no welding is performed, and thus the power loss due to the main power consumption of the main transformer is very large, resulting in an uneconomical defect. Since high voltage is always applied, there is always a risk that an electric shock may occur due to a short circuit.

본 고안은 종래의 이와 같은 결함과 사고 발생의 위험을 배제하고져 안출한 것으로, 용접봉이 피용접물에 접촉되는 순간에 주트랜스의 1차측에 전원을 공급하게 하고, 무부하시에는 주트랜스의 1차측 선로가 개량되게 하여, 전기 용접기의 무부하 전력손실을 방지하고 무부하시의 외부 접촉에 의한 사고를 미연에 방지할 수 있도록 한 것으로, 이를 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.The present invention eliminates the risk of such defects and accidents in the prior art, and provides the power supply to the primary side of the main transformer at the moment when the welding rod comes into contact with the welded object, and at no load, the primary side line of the main transformer. By improving the, to prevent the no-load power loss of the electric welder and to prevent the accident due to the external contact at no load, which will be described in detail by the accompanying drawings as follows.

주트랜스(Tr1)의 2차측에 용접기(1)를 설치한 공지의 것에 있어서, 전원측에 연결된 보조트랜스(Tr2)의 2차측(Tr2-b)와 주트랜스(Tr1)의 2차측 사이에 임피던스 매칭용 쵸크코일(CH1) 및 (CH2)를 직렬로 접속함과 동시에 릴레이(Ry1) 구동용 트랜스(Tr3)를 접속하고, 쵸크코일(CH2)의 2차측에 정류회로(RF1) 및 저항(R1), 콘덴서(C1)를 개하여 SCR의 에노드단에 접속하고, SCR1의 게이트단에는 보조트랜스(Tr2)의 2차측(Tr1-a)을 정류다이오우드(D1) 및 저항(R2)과 제너다이오우드(ZD)를 통하여 접속시켜 항상 게이트가 열려 있는 상태로 유지시키고, SCR1의 케소오드단에 SCR2의 게이트단을 접속시켜, SCR1과 접속된 주트랜스(Tr1)의 접점(P1) 개폐용 구동 릴레이(MRy)의 동작용 릴레이(Ry)가 동작되게 구성하여서 된 것으로, 미설명 부호 P2,P3,P4는 릴레이(Ry)의 접점, P5는 릴레이(Ry1)의 접점, P.L은 램프이다.According to the weeks have installed the welding machine (1) on the secondary side of the transformer (Tr 1) known, the secondary side of the auxiliary transformer (Tr 2) connected to the power source side (Tr 2 -b) and main secondary side of the transformer (Tr 1) The impedance matching choke coils CH 1 and CH 2 are connected in series, and the relay Ry 1 driving transformer Tr 3 is connected to the rectifier circuit on the secondary side of the choke coil CH 2 . (RF 1 ), resistor (R 1 ) and capacitor (C 1 ) are connected to the anode end of SCR, and the secondary side (Tr 1 -a) of auxiliary transformer (Tr 2 ) is connected to the gate end of SCR 1 . It was connected via a rectifier diode (D 1) and resistor (R 2) and a Zener diode (ZD) and always maintained at a state in which the gate is open, by connecting a gate terminal of the SCR 2 to keso odd stage of the SCR 1, SCR 1 a main transformer (Tr 1) that the contact point (P 1) hayeoseo configured such action relay (Ry) of the opening and closing driving relay (MRy) for the presented operation, reference numeral connected to P 2, P 3, P 4 is the relay (Ry ), P 5 is the relay (Ry 1 ), PL is the lamp.

이와 같이 구성된 본 고안은 용접기(1)의 용접봉이 피용접물과 접촉하지 않은 무부하시에는 접점(P3)이 폐쇄된 상태가 되어 보조트랜스(Tr2)의 2차측(Tr2-b)을 통하여 임피던스 매칭용 쵸크코일(CH1), 주트랜스(Tr1)의 2차측 권선 및 쵸크코일(CH2)의 회로가 구성되는데 주트랜스(Tr1)의 2차측 권선의 임피던스가 상당히 증가된 상태로 되어 이의 전류가 상당히 감소된 상태가 되므로서 쵸크코일(CH2)의 2차측에는 전압이 검출되지 않게 되어 접점(P1) 개폐용 구동 릴레이(MRy)의 동작용 릴레이(Ry2)가 소거된 상태를 유지하게 되므로써 주트랜스(Tr1)의 2차측 용접회로에는 극히 미세한 전류만이 흐르게 된다.According to the present invention configured as described above, when the welding rod of the welding machine 1 is not in contact with the object to be welded, the contact point P 3 is in a closed state through the secondary side (Tr 2 -b) of the auxiliary transformer Tr 2 . by the impedance matching with the choke coil (CH 1), the main transformer (Tr 1) the secondary side winding and the secondary side coil of the transformer (Tr 1) week there is the circuit configuration of a choke coil (CH 2) impedance is significantly increased in the state for Since the current is considerably reduced, the voltage is not detected at the secondary side of the choke coil CH 2 , and the operating relay Ry 2 of the driving relay MRy for contact P 1 is erased. By maintaining the state, only a very small current flows in the secondary welding circuit of the main transformer Tr 1 .

이후 용접기(1)의 용접봉이 피용접 물체에 닿게 되면 주트랜스(Tr1) 2차측의 용접회로에는 임피던스가 감소하여 전류가 증가하게 되고, 이때 쵸크코일(CH2)의 2차측에서는 전압이 검출되어 정류회로(RF1), 저항(R1) 및 콘덴서(C1)을 통하여 SCR1을 통하게 되는데, SCR1은 보조트랜스(Tr2)의 2차측(Tr2-b) 다이오우드(D1), 저항(R2) 및 제너다이오우드(ZD)를 통하여 항상 게이트가 개방된 상태로 유지되어 있으므로서 쵸크코일(CH2)의 2차측에서 검출된 신호는 SCR1을 통하여 SCR2의 게이트에 트리거되어 SCR2의 에노드 케소드간이 도통되어 이에 연결된 릴레이(Ry2)가 여자되어 접점(P2) 및 (P4)를 폐쇄시켜 주어서 접점(P1) 구동용 릴레이(MRy)를 동작시켜 접점(P1)을 폐쇄시켜 주고, 따라서 주트랜스(Tr1)의 1차측에 전원이 가해져 용접기(1)가 용접을 하게 됨과 동시에 접점(P3)는 개방되어 보조트랜스(Tr2)의 2차측(Tr2-b)을 개방하게 되나, 릴레이(Ry2)는 지속적으로 동작하여 접점(P2)(P1) 및 (P4)를 계속 폐쇄된 상태로 유지시켜 주게된다.Then, when the welding rod of the welding machine 1 comes into contact with the object to be welded, the impedance of the main circuit Tr 1 secondary side decreases and the current increases, and at this time, the voltage is detected on the secondary side of the choke coil CH 2 . the rectifier circuit (RF 1), resistance (R 1) and there is passes through the SCR 1 through the capacitor (C 1), SCR 1 is the outlet side (Tr 2 -b) of the auxiliary transformer (Tr 2) diode (D 1) The signal detected at the secondary side of the choke coil CH 2 is triggered to the gate of the SCR 2 through the SCR 1 since the gate is always kept open through the resistor R 2 and the zener diode ZD. The anode cathode of SCR 2 is conducting, and the relay Ry 2 connected thereto is excited to close the contacts P 2 and P 4 to operate the contact P 1 driving relay MRy to operate the contact ( giving to close the P 1), therefore the main power is supplied to the primary side of the transformer (Tr 1) is applied to a welding machine (1) is welded At the same time as soon contacts (P 3) is open but the opening of the outlet side (Tr 2 -b) of the auxiliary transformer (Tr 2), a relay (Ry 2) is continuously operated contact (P 2) (P 1) and Keep (P 4 ) closed.

이후 다시 용접 작용을 중단하여 용접기(1)의 용접봉과 피용접 물체의 접촉이 중단되면 주트랜스(Tr1)의 2차측 전압이 릴레이(Ry1) 구동용 트랜스(Tr3)에 그대로 인가되고 따라서 릴레이(Ry1) 구동용 트랜스(Tr3)의 1차측 전압이 용접시보다 상승되게 됨과 동시에 2차측에도 전압이 유기되어 릴레이(Ry2)가 여자되어 릴레이(Ry2) 공급용 전원선의 접점(P5)을 개방시켜 주게 되어 릴레이(Ry2)가 소거되고 따라서 접점(P2) 및 (P4)가 개방되어 접점(P1) 구동용 릴레이(MRy)에 공급되던 전원을 차단하게 되므로서 접점(P1)이 개방되어 주트랜스(Tr1)의 1차측 전원을 차단하게 되고 '이에 따라 주트랜스(Tr1)의 2차측 용접회로에는 다시 보조트랜스(Tr2)에서 유기된 낮의 전압의 저전류만을 흐르게 하여 줌과 동시에 릴레이(Ry2)가 소거되어 접점(P4)도 개방되게 되므로서 릴레이(Ry1)도 소거되어 다시 릴레이(Ry2) 동작 전원 접점(P5)을 원래 상태로 폐쇄시켜 용접개시 동작전 상태로 복귀하게 된다.After the welding operation is stopped again and the contact between the welding rod and the object to be welded is stopped, the secondary voltage of the main transformer Tr 1 is applied to the relay Ry 1 driving transformer Tr 3 as it is. The primary voltage of the relay Ry 1 driving transformer Tr 3 is increased than at the time of welding, and at the same time, the voltage is induced on the secondary side, so that the relay Ry 2 is excited and the contact of the power line for supplying the relay Ry 2 ( P 5 ) is opened so that the relay Ry 2 is erased and thus the contacts P 2 and P 4 are opened to cut off the power supplied to the contact relay P 1 driving relay MRy. contact point (P 1) is the open state being insulated from the primary side power supply of the transformer (Tr 1) 'Thus the main transformer secondary side welding circuit, again a secondary transformer (Tr 2) of the lower organic in voltage (Tr 1) The relay (Ry 2 ) is cleared and the contact (P 4 ) is also opened by allowing only the low current of the current to flow. As a result, the relay Ry 1 is also erased to close the relay Ry 2 operating power contact P 5 to its original state to return to the state before welding start operation.

이와 같이 본 고안은 용접기의 용접봉의 피용접 물체에 닿는 순간의 임피던스 감소 현상에 의하여 접점 구동용 릴레이 동작용 릴레이를 구동시켜 주트랜스의 1차측에 전원을 인가하여 용접할 수 있게 하고, 용접기의 용접봉이 피용접 물체와 접촉이 중단되는 순간에 접점구동용 릴레이 동작용 릴레이를 소거시켜 주트랜스의 1차측 전원을 차단시켜 주는 간단한 회로 구성방법으로 전기 용접기 무부하시의 전력 손실을 방지하여 절전의 효과를 크게 기대할 수 있을 뿐만 아니라, 무부하시에는 보조트랜스와 2차측에서 유기되는 미세한 전류만을 용접기 회로에 흐르게 하므로서 종래와 같은 누전 등에 의한 감전 사고를 미연에 방지하여 안전하게 용접작용을 수행할 수 있는 효과를 지닌 유용한 고안인 것이다.As such, the present invention drives the relay for contact driving relay operation by the impedance reduction phenomenon at the moment of touching the welding object of the welding rod of the welding machine, so that the welding can be applied by applying power to the primary side of the main transformer. This is a simple circuit that cuts off the primary power supply of the main transformer by eliminating the relay for contact driving relay operation at the moment when contact with the object to be welded is prevented. Not only can it be greatly expected, but in case of no load, only a small current induced from the auxiliary transformer and the secondary side flows to the welding machine circuit, thereby preventing the electric shock caused by a short circuit in the prior art and having an effect of safely performing a welding operation. It is a useful design.

Claims (1)

도면에 표시한 바와 같이 주트랜스(Tr1)의 2차측에 용접기(1)를 연결한 공지의 것에 있어서 주트랜스(Tr1)의 2차측과 보조트랜스(Tr2)의 2차측(Tr2-b) 사이에 쵸크코일(CH1)(CH2)을 직렬로 접속하고, 쵸크코일(CH2)의 2차측에 SCR1및 SCR2로 구성된 릴레이(Ry2) 구동회로를 연결함과 동시에 주트랜스(Tr1) 2차측과 보조트랜스(Tr2)의 2차측(Tr2-b) 사이에 릴레이(Ry1) 구동용 트랜스(Tr3)를 병렬로 접속시켜서 된 전기 용접기의 무부하 단전회로.The secondary side of the main transformer (Tr 1) the main transformer secondary side and the auxiliary transformer (Tr 2) of the (Tr 1) according to a known connecting the welding machine (1) on the secondary side of the as shown in the figure (Tr 2 - b) Connect the choke coil (CH 1 ) (CH 2 ) in series between them, connect the relay (Ry 2 ) driving circuit consisting of SCR 1 and SCR 2 to the secondary side of the choke coil (CH 2 ) An unloaded single-circuit circuit of an electric welding machine in which a relay (Ry 1 ) driving transformer (Tr 3 ) is connected in parallel between a secondary side of a transformer (Tr 1 ) and a secondary side (Tr 2 -b) of an auxiliary transformer (Tr 2 ).
KR7905826U 1979-09-24 1979-09-24 Electric-arc welding machine KR810001069Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109047992A (en) * 2018-09-20 2018-12-21 西安拓锋机电科技有限公司 It efficiently cuts and carries economize on electricity control route

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109047992A (en) * 2018-09-20 2018-12-21 西安拓锋机电科技有限公司 It efficiently cuts and carries economize on electricity control route

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