KR910001591B1 - A electric-shock checking device for ac arc welding m/c - Google Patents

A electric-shock checking device for ac arc welding m/c Download PDF

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KR910001591B1
KR910001591B1 KR1019880012004A KR880012004A KR910001591B1 KR 910001591 B1 KR910001591 B1 KR 910001591B1 KR 1019880012004 A KR1019880012004 A KR 1019880012004A KR 880012004 A KR880012004 A KR 880012004A KR 910001591 B1 KR910001591 B1 KR 910001591B1
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circuit
welding machine
arc
arc welding
electric shock
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KR900004451A (en
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김일기
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김일기
김석권
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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
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls

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  • Generation Of Surge Voltage And Current (AREA)
  • Arc Welding Control (AREA)

Abstract

An electric shock checking device for AC-arc welding machine comprising main-circuit (1), sub-circuit (2), and bridge circuit for decreasing the power consumption and preventing the damage of reverse current, is disclosed. The on-off switch is operated by SCR device which exchanges the two wave produced by bridge with four diode (D1,D2,D3,D4). Also, the operation of a make and break is controlled by using the 2πfL(XL) of sub-circuit coil (L). This device has the excellent protection against electric shock.

Description

교류아아크(AcArc) 용접기의 전격 방지장치Electric shock prevention device of AC Arc welding machine

제1도는 본 발명의 블럭다이어그램을 표시한 회로도.1 is a circuit diagram showing a block diagram of the present invention.

제2도는 본 발명의 전격 방지장치의 안전전압을 표시한 회로도.2 is a circuit diagram showing the safety voltage of the electric shock prevention device of the present invention.

제3도는 본 발명을 실시하기 위한 예시도로서, a도는 본 발명을 다이오드(D1, D2, D3, D4)에 의해 브리지(bridge)시켜 양파형을 S.C.R로서 온, 오프(ON, OFF)시켜 동작을 제어하는 회로도. b도는 본 발명의 S.C.R 2개의 소자를 사용하여 양파형을 교대로 온, 오프(ON, OFF)시켜 동작을 제어하는 회로도. c도는 본발명의 트라이액(TRIAC)소자를 사용하여 양파형을 온, 오프(ON, OFF)시켜 동작을 제어하는 회로도.3 is an exemplary diagram for carrying out the present invention, and a is bridged by the diodes D 1 , D 2 , D 3 , D 4 to turn the onion type on and off as SCR. OFF to control the operation. b is a circuit diagram of controlling the operation by alternately turning on and off the onion type using two SCR elements of the present invention. c is a circuit diagram of controlling the operation by turning the onion type ON and OFF using the TRIAC element of the present invention.

제4도는 본 발명을 실시하기 위한 보조회로(L) (C)특성을 응용한 예시도로서, a는 본 발명을 보조회로 코일(L)의 2πfL(XL)를 응용한 예시도이며, b도는 본 발명을 보조회로콘덴서(C)의

Figure kpo00001
(XL)를 응용한 예시도이다.4 is an exemplary diagram in which the characteristics of the auxiliary circuit (L) and (C) are applied to implement the present invention, and a is an exemplary diagram in which 2πfL (XL) of the auxiliary circuit coil (L) is applied to the present invention. The invention of the auxiliary circuit capacitor (C)
Figure kpo00001
It is an example figure which applied (XL).

본 발명은 교류아아크(AcArc) 용접기용 전격방지장치에 관한 것으로, 특히 교류아아크 용접기의 전격충격에 의한 안전사고를 미연에 방지하고 무부하시에는 전력소모를 줄이고 또한 용접기의 2차측에 안전전압을 유지하고 아아크시에는 용접기의 2차측 용접전압을 유지될 수 있도록 주회로와 보조회로 및 자동제어회로를 이용하여 용접기의 무부하전압을 보조회로인 리액턴스(XL) (XC)를 용접기와 직열 접속하여 전력소모를 줄이고 출력전압을 자동적으로 안전한 전합으로 유지하게 한 것이다.The present invention relates to an electric shock prevention device for AC arc welding machine, in particular, to prevent the safety accident caused by the electric shock of the AC arc welding machine in advance and to reduce the power consumption during no load and to maintain a safety voltage on the secondary side of the welding machine. In case of arcing, the main circuit, auxiliary circuit and automatic control circuit are used to connect the no-load voltage of the welding machine to the auxiliary circuit reactance (XL) (XC) in series with the welding machine to maintain the welding voltage on the secondary side of the welding machine. The output voltage is automatically reduced to a safe total.

종래의 교류아아크용접기의 제어장치로서 각종부하 검출방법이나 또는 기계적인 전자 접촉방법이나 위상제어식 무접점 방식등 다양한 여러종류가 있으나 국내에서 개발된 제어장치는 부하 검출방법이 복잡하게 회로가 구성되어 있으므로 아아크 용접시 접점의 고장과 용접기의 아크에 의한 오동작 등에 의하여 장기 사용으로는 불가능하고 2차측 출력에는 전력이 출력되지 않으므로 용접시에는 사용에 불편하고 배선도에 따라서 설치하여야 하는등 불합리한 결점이 많고 안전관리에 도움을 주지않고 소용량 용접기에서는 부하전압을 과아아크전압이 통상의 용접기의 역률이 낮기 때문에 전력소모가 많은 결점을 가지고 있었다.As a control device of the conventional AC arc welding machine, there are various types such as various load detection methods, mechanical electromagnetic contact methods, or phase-controlled contactless methods, but the control devices developed in Korea have a complicated circuit of load detection methods. It is impossible for long-term use due to breakdown of contact during arc welding and malfunction due to arc of welding machine. Since power is not output to secondary side output, it is inconvenient to use during welding and must be installed according to wiring diagram. In the small-capacity welding machine, power consumption is high because the overvoltage and arc voltage have low power factor of the general welding machine.

본 발명은 이러한 결점을 해소하기 위하여 연구 개발된 것으로서, 특히 교류 아아크용접기의 전격충격에 의한 안전사고를 미연에 방지하고 무부하시에는 전력소모를 줄이고 교류아아크 용접기의 2차측에 안전전압 (25V 이하)을 유지시키고 교류아아크 용접시에는 용접기 2차측에 용전전압(40-80V)을 유지케하고 주회로와 보조회로 및 자동제어회로를 연결하여 사용하므로 아아크 용접시 전력소모를 줄이고 출력전압을 위상 제어방식이 아닌 리액턴스 제어방식으로 하여 자동적으로 전압조정이 이루어지므로 인명피해를 줄이게 한 것이다.The present invention has been researched and developed in order to solve the above-mentioned drawbacks. In particular, it prevents safety accidents caused by the electric shock of the AC arc welding machine, reduces power consumption during no load, and provides a safety voltage (less than 25V) at the secondary side of the AC arc welding machine. In the case of AC arc welding, it maintains the discharging voltage (40-80V) on the secondary side of the welding machine and connects the main circuit, auxiliary circuit, and automatic control circuit to reduce power consumption and output voltage during arc welding. In other words, the voltage is automatically adjusted by the reactance control method, thereby reducing the casualties.

본 발명의 구성을 도면에 의하여 상세히 설명하면 다음과 같다.Referring to the configuration of the present invention in detail as follows.

본 발명은 주회로(1)와 보조회로(2) 및 자동제어회로(3)로 구성된 용접기의 전격방지장치를 구성함에 있어서, 교류아아크 용접시 용접봉을 모제에 접촉하면 보조회로에 신호전압이 발생하여 이 전압을 증폭 변조하여 주회로(1)는 온(ON) 신호로하여 S.C.R등 반도체소자를 통하여 통전되므로 입력전원 전압을 보조회로와 관계없이 용접기의 1차측에 공급하여 교류아아크 용접이 정상적으로 이루어지게 하고 용접이 끝나면 용접기의 2차측에 아아크가 끊어지므로 보조회로(2)의 전류가 감소되어 자동제어회로가 출력신호를 발생하지 않게되어 주회로(1)가 오프(OFF)되므로 주회로(1)는 차단되어 용접기의 1차측에 공급되는 전원은 보조회로(2) (XL 또는 XC) 양단에 유기되는 전압 E3만큼 적은 전압이 용접기에 공급되어 용접기의 2차측에 안전전압을 유지케 구성한 것이다.In the present invention, in the electric shock prevention device of the welding machine composed of the main circuit (1), the auxiliary circuit (2) and the automatic control circuit (3), the signal voltage is generated in the auxiliary circuit when the welding rod contacts the mother material during the AC arc welding. This circuit is amplified and modulated so that the main circuit 1 is an ON signal and is energized through semiconductor devices such as SCR. Therefore, AC arc welding is normally performed by supplying the input power supply voltage to the primary side of the welding machine irrespective of the auxiliary circuit. After the welding, the arc is cut off on the secondary side of the welding machine, so the current of the auxiliary circuit 2 is reduced so that the automatic control circuit does not generate an output signal and the main circuit 1 is turned off. ) is cut off the power supplied to the primary side of the welding machine has a secondary circuit (2), (XL or XC) with low voltage by the voltage E 3 induced in both ends is supplied to the welding machine configured Kane maintain a safe voltage to the secondary side of the welding machine A.

이와 같이 구성된 본 발명의 작용효과를 상세히 설명하면 다음과 같다. 본 발명은 교류아아크(AcArc)용접기용 전격방지장치에 관한 것으로 특히 교류아아크 용접기의 전격충격에 의한 안전사고를 미연에 방지하고 무부하시에는 전력소모를 줄이고 또한 용접기의 2차측에 안전전압을 유지하고 아아크시에는 용접기의 2차측 용접전압을 유지될 수 있도록 주회로와 보조회로 및 자동제어회로를 이용하여 무부하전압을 보조회로인 리액턴스(XL) (XC)를 용접기와 직열접속하여 전력소모를 줄이고 출력전압을 자동적으로 안전한 전압으로 유지하게한 것으로 제1도는 본 발명의 블럭다이어그램을 표시한 회로도로서 주회로(1)와 보조회로(리액턴스회로 XL, XC) (2) 및 자동제어회로(3)으로 이루어진 교류아아크 용접기의 전격방지 장치이며, 제2도는 본발명의 전격방지장치의 안전전압(E3)을 표시한 것이다. 제3도는 본 발명을 실시하기 위한 예시도로서. a도는 다이오드에 의해 브리지시켜 양파형을 S.C.R로서 온, 오프동작을 제어하는 회로도이고, b도는 S.C.R 2개의 소자를 사용하여 양파형을 교대로 온, 오프동작을 제어하는 회로도이며, c도는 트라이액(TRIAC)소자를 사용하여 양파형을 온, 오프시켜 동작을 제어하는 회로도이다. 제4도는 본 발명을 실시하기 위한 보조회로(L) (C)를 실시하기 위한 예시도로서, a도는 보조회로(L) 2πfL(XL)를 실시한 예시도이며, b도는 보조회로(C)에

Figure kpo00002
(XC)를 실시하기 위한 예시도이다.Referring to the effects of the present invention configured as described above in detail. The present invention relates to an electric shock prevention device for AC arc welding machine, in particular, to prevent the safety accident caused by the electric shock of the AC arc welding machine in advance and to reduce the power consumption during no load and to maintain the safety voltage on the secondary side of the welding machine. At the time of arcing, the main circuit, auxiliary circuit, and automatic control circuit are used to maintain the secondary welding voltage of the welding machine, and the reactance (XL) (XC), which is the auxiliary circuit, is directly connected to the welding machine to reduce power consumption. FIG. 1 is a circuit diagram showing the block diagram of the present invention. The main circuit 1 and the auxiliary circuits (reactance circuits XL and XC) 2 and the automatic control circuit 3 are automatically maintained at a safe voltage. It is made of the electric shock prevention device of the AC arc welder, and FIG. 2 shows the safety voltage E 3 of the electric shock prevention device of the present invention. 3 is an exemplary diagram for practicing the present invention. a is a circuit diagram for controlling the on / off operation of onion type as SCR by bridging by diode, and b is a circuit diagram for controlling the on / off operation of onion type alternately using two SCR elements, and c is a triac (TRIAC) This circuit diagram controls the operation of the onion type by using the device. 4 is an exemplary diagram for implementing the auxiliary circuit (L) (C) for implementing the present invention, a is an exemplary diagram for implementing the auxiliary circuit (L) 2πfL (XL), and b is a diagram for the auxiliary circuit (C)
Figure kpo00002
It is an illustration for implementing (XC).

상기와 같이 본 발명은 교류아아크 용접기 2차측에 발진회로와 직열과 결선된 상태에서 용접기 2차측 전압이 무부하가되면 회로는 자동 차단시켜주고 부하상태가 되면 용접기 1차측에 연결된 주회로(1)와 보조회로(2) 및 자동제어회로(3)로 연결되어 있으므로 1차측에 연결되어 있는 전자개폐기가 온, 오프동작을 보조회로(리액턴스 XL, XC) (2)를 자동제어회로(3)에서 동작시켜주고 아아크시에는 용접기의 2차측에 용접전압을 유지될 수 있도록 주회로(1)와 보조회로(2) 및 자동제어회로(3)를 이용하여 용접기의 무부하전압을 보조회로(2)인 리액턴스(XL 또는 XC)를 용접기와 직열 접속되어 있으므로 전력소모를 줄이고 출력전압을 자동적으로 조절되므로 안전하게 전압을 유지할 수 있고 종래와 같이 교류 아아크 용접기의 제어장치로서 각종부하 검출방법이나 기계적인 전자접촉방법이나 위상제어식 무접점방식 등이 있었으나 아아크 용접시 접점의 고장과 용접기의 아크에 의한 오동작 등에 의한 사고를 미연에 방지되고 장기 사용으로 불가능한 결점을 해소할 수 있고 교류아아크 용접시의 전격충격에 의한 안전사고를 미연에 방지하고 무부하시에는 전력소모를 줄이고 교류 아아크용접기의 2차측에 안전전압을 유지하고 교류아아크 용접시에는 2차측에 용접전압 (40-80V)이 유지되게 하므로 주회로(1)와 보조회로(2) 및 자동제어회로(3)를 연결하므로 아아크 용접시 전력소모를 줄이고 출력전압을 자동적으로 전압조정이 이루어지므로 인명피해를 줄이게한 것이다.As described above, the present invention is the main circuit (1) connected to the primary side of the welder when the secondary voltage of the welder in the state connected to the oscillation circuit and the direct heat on the secondary side of the AC arc welder is no load and the circuit is automatically cut off Since the auxiliary circuit (2) and the automatic control circuit (3) are connected, the electronic switch connected to the primary side operates the auxiliary circuit (reactance XL, XC) (2) in the automatic control circuit (3). Reactance of the no-load voltage of the welding machine using the main circuit (1), auxiliary circuit (2), and automatic control circuit (3) to maintain the welding voltage on the secondary side of the welding machine during arcing (XL or XC) is directly connected to the welding machine, so the power consumption is reduced and the output voltage is automatically adjusted so that the voltage can be safely maintained. As a conventional control device for AC arc welding machines, various load detection methods or There are mechanical electromagnetic contact methods and phase-controlled contactless methods, but accidents caused by contact failures and arc malfunctions of arcs during arc welding can be prevented in advance, and defects that are impossible for long-term use can be eliminated. It prevents safety accidents due to electric shock, reduces power consumption during no load, maintains safety voltage on the secondary side of AC arc welding machine, and maintains welding voltage (40-80V) on the secondary side when AC arc welding. Since the furnace (1) and the auxiliary circuit (2) and the automatic control circuit (3) are connected, it reduces power consumption during arc welding and automatically adjusts the output voltage, thereby reducing casualties.

Claims (6)

본문에 상술하고 도면에 표시된 바와 같이 동일한 주파수로 사용시 역전류에 의한 기기의 소손을 방지하고 소모전력을 줄이게한 브리지회로를 구성하고 교류아아크 발생시 주회로(1)와 보조회로(2) 및 자동제어회로(3)로 구성하여서된 교류아아크 용접기의 전격 방지장치.As described in the text and as shown in the figure, a bridge circuit which prevents burnout of the device due to reverse current and reduces power consumption when used at the same frequency, and main circuit (1) and auxiliary circuit (2) and automatic control when AC arc occurs Electric shock prevention device of the AC arc welder composed of a circuit (3). 제1항에 있어서, 다이오드(D1, D2, D3, D4) 4개에 의해 브리지된 양파형을 S.C.R 소자로 온, 오프하여 개폐동작을 제어케 하여서된 교류아아크 용접기의 전격 방지장치.The apparatus of claim 1, wherein the onion type bridged by four diodes D 1 , D 2 , D 3 , and D 4 is turned on and off by the SCR element to control the opening and closing operation. . 제1항에 있어서, S.C.R 두개로 양파형을 교차되게 온, 오프 동작을 개폐케 하여서된 교류아아크 용접기의 전격방지장치.The apparatus of claim 1, wherein the AC arc welder is opened and closed by crossing two onions with S.C.R. 제1항에 있어서, 트라이액(TRIAC) 소자를 이용하여 양파형을 개폐동작을 제어케 하여서된 교류아아크 용접기의 전격 방지장치.The apparatus for preventing electric shock of an arc arc welding machine according to claim 1, wherein the onion type is controlled to open and close by using a triac element. 제1항에 있어서, 보조회로(2) 코일(L)의 2πfL(XL)를 이용하여 개폐동작을 제어케 하여서된 교류아아크 용접기의 전격 방지장치.The apparatus for preventing an electric arc welding machine according to claim 1, wherein the opening and closing operation is controlled using 2πfL (XL) of the auxiliary circuit (2) coil (L). 제1항에 있어서, 보조회로(2)의 콘덴서 1(C)의
Figure kpo00003
(XC)를 이용하여서 개폐동작을 제어케 하여서된 교류아아크용접기의 전격 방지장치.2. A capacitor according to claim 1, wherein the capacitor 1 (C) of the auxiliary circuit 2
Figure kpo00003
Electric shock prevention device of AC arc welding machine which controls opening / closing operation using (XC).
KR1019880012004A 1988-09-16 1988-09-16 A electric-shock checking device for ac arc welding m/c KR910001591B1 (en)

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