KR810002024Y1 - A.c arc welding machine with semiconductor power savind circwite - Google Patents

A.c arc welding machine with semiconductor power savind circwite Download PDF

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Publication number
KR810002024Y1
KR810002024Y1 KR7905567U KR790005567U KR810002024Y1 KR 810002024 Y1 KR810002024 Y1 KR 810002024Y1 KR 7905567 U KR7905567 U KR 7905567U KR 790005567 U KR790005567 U KR 790005567U KR 810002024 Y1 KR810002024 Y1 KR 810002024Y1
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South Korea
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welding
transformer
transistor
contact
relay
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KR7905567U
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Korean (ko)
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이명식
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이명식
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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
    • B23K9/1006Power supply
    • B23K9/1043Power supply characterised by the electric circuit

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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

전기용접기의 무접점 개폐장치Solid state switchgear of electric welding machine

도면은 본 고안의 회로도임.The figure is a circuit diagram of the present invention.

본 고안은 전기용접기의 용접봉을 피용접물에 접촉시키거나 분리시킴에 따라 스위치 조작없이도 자동적으로 용접전원이 개폐되도록 하므로서 작업의 안정성을 높이고 능률적인 용접 작업을 할 수 있게 한 전기 용접기의 무접점 개폐장치에 관한 것이다.The present design allows the welding power source to be automatically opened and closed without switch operation by contacting or separating the welding rod of the electric welder to the welded object, thereby improving the stability of the work and making the welding work more efficient. It is about.

종래의 전기 용접기는 용접시마다 일일이 전원스위치를 개폐하여야 하므로 스위치의 빈번한 개폐 동작으로 고장율이 높고 또한 전원 트랜스의 2차 코일선축에 트라이악(TRIAC)을 삽설하여 용접봉이 피용접물에 접촉될 때만 고전류가 흐르도록된 것도 있었으나 통상적인 회로구성으로 트라이악을 사용하면 게이트회로가 복잡하여 제작비가 높게되고 고장율이 많게 되는 결점이 있었다.Conventional electric welding machines must open and close the power switch every time welding, so the failure rate is high due to the frequent opening and closing operation of the switch. Although there were some flows, the triac was used in a conventional circuit configuration, and the gate circuit was complicated, resulting in a high manufacturing cost and a high failure rate.

본 고안은 이러한 결점을 시정하기 위하여 용접기의 전원트랜스의 입력선과 1차 코일사이에 연결된 트라이악의 게이트가 용접통의 전류감지기에 의하여 동작되는 릴레이스위치에 의하여 작동되도록 한 것이다. 즉 보 고안에 의하여 용접봉이 피용접물에 접촉하지 않아 감지된 전류가 없을 때에는 릴레이가 동작하지 않고 그에 따라 트라이악의 게이트 단자도 도통되지 않게 되어 용접봉의 전원트랜스에 전원이 공급되지 않으나, 용접봉이 피용접물에 접촉되면 보조트랜스의 2차 코일로부터의 미전류가 용접봉으로 통전되면서 전류 감지기의 감지신호에 의하여 릴레이가 동작함으로서 용접봉으로 통전되는 미전류가 차단되도록 릴레이의 접점(b)이 작동하고 동시에 게이트 전류는 공급되게 함으로서 트라이악이 도통되면서 전원트랜스에 용접전원이 공급되어 용접이 되게되고 용접봉을 떼면 다시 플립플롭(Flip Flop)회로의 동작으로 원상태로 복귀되도록 하므로서 스위치 없이도 용접봉의 접촉 및 분리에 따라 용접전원이 자동적으로 개폐될 뿐 아니라 트라이악을 사용하면서도 회로구성이 간단하여 고장이 없이 보다 안전하고 신속하게 용접할 수 있게 되는 것이다. 이와 같은 본 고안을 도면에 의하여 상세히 설명하면 다음과 같다.In order to rectify this drawback, the triac gate connected between the input line of the power transformer of the welding machine and the primary coil is operated by a relay switch operated by the current sensor of the welding tube. In other words, when the electrode does not come into contact with the object to be welded and there is no current detected, the relay does not operate and the triac gate terminal does not conduct accordingly, so power is not supplied to the power transformer of the electrode. When the contact is in contact with the secondary current of the secondary coil, the current flows through the welding rod, and the relay operates by the detection signal of the current sensor, so that the contact current (b) of the relay operates to cut off the current flowing through the welding rod and at the same time the gate current As the triac is turned on, the welding power is supplied to the power transformer and the welding is performed. When the welding rod is released, it is returned to its original state by the flip-flop circuit operation. Power is automatically switched on and off To use, yet simple circuit configuration will be able to more safely and quickly welded without failures. This invention is described in detail by the drawings as follows.

용접기의 전원트랜스(T1)의 1차 코일(T1-1) 과 입력선(1) 사이에 트라이악 (Tra)를 삽입연결하여 트라이악의 게이트측 단자(G)에 보조트랜스(T2)의 2차코일 (V2) 도선을 릴레이(Ry) 접점(a)을 통하여 상시 개방 상태로 연결하고 용접봉 (X)이 연결된 트랜스(T1)의 2차 코일(T1-2) 측에 보조트랜스(T2)의 2차코일(V1)의 도선을 릴레이(Ry)의 접점(b)을 통하여 상시 접촉상태로 연결하여 용접봉(X)을 피용접물(Y)에 접촉시키면 보조트랜스(T2)의 2차코일(V1)로부터 미전류가 흐를 수 있게하며, 용접봉(X)이 연결된 도선간에 전류검출기(SN)를 삽설하여 그 도선을 브릿지정류기(BD2)에 연결하고 정류기(BD2)의 출력선을 저항(Rs,R4,R5,R6) 및 콘덴서(C3,C4,C5)를 거쳐 트랜지스터(Q1)의 베이스측에 연결하며 트랜지스터(Q1)의 콜렉터 단자에 연결하고 트랜스(T1)의 2차코일(T1-2)에 연결된 일축도선은 용접봉(X), 다이오드(D1), 저항(R13,R14), 제너다이오드(ZD1), 저항(R15,R16,R17,R18) 및 콘덴서(C2)를 거쳐 트랜지스터(Q4)의 베이스측에 연결하며 이 트랜지스터(Q4)의 콜렉터는 플립플롭(F.F)회로의 타측 트랜지스터(Q3)의 콜렉터단자에 연결하고 플립플롭(F.F)회로의 출력단자는 트랜지스터(Q4)를 거쳐 릴레이(Ry)에 연결하여서 된 것이다.The primary coil of the power transformer (T 1) of the welder (T 1 - 1) to the input line (1) by inserting connecting the triac (Tra) to the secondary transformer to tri malicious gate side terminal (G) between (T 2) a secondary coil (V 2) leads a relay (Ry) via a contact (a) connected to the normally open state and the electrode (X) secondary coil of the transformer (T 1) is connected to (T 1 - 2) secondary side When the lead wire of the secondary coil (V 1 ) of the transformer (T 2 ) is connected at regular contact state through the contact (b) of the relay (R) and the welding rod (X) is in contact with the welded object (Y), the auxiliary transformer (T) 2 ) allows the uncurrent to flow from the secondary coil (V 1 ) of 2), inserts a current detector (SN) between the leads connected to the welding rod (X), connects the leads to the bridge rectifier (BD 2 ), and connects the rectifier (BD). 2) an output line resistance (R s, R 4, R 5, R 6) of and a capacitor (C 3, C 4, via the C 5) connected to the base side of the transistor (Q 1) and the transistor (Q 1) connected to the collector terminal of the transformer (T 1 ) The secondary winding (T 1 of - uniaxially conductive wire connected to 2) is a welding electrode (X), a diode (D 1), resistors (R 13, R 14), a Zener diode (ZD 1), resistors (R 15, R 16 Is connected to the base side of transistor Q 4 via R 17 , R 18 and capacitor C 2 , and the collector of this transistor Q 4 is the collector of the other transistor Q 3 of the flip-flop (FF) circuit. The output terminal of the flip-flop (FF) circuit is connected to the relay Ry through the transistor Q 4 .

도면중 미설명부호 BD1은 릴레이 및 플립플롭 회로의 전원공급용 정류기이다.In the drawing, reference numeral BD 1 denotes a rectifier for power supply of a relay and a flip-flop circuit.

이와 같이된 본 고안은 용접봉(X)을 피용접물(Y)에 접촉시키면 그 순간 보조트랜스(T2)의 2차코일(V1)에서 릴레이(Ry)의 접점(b)을 통하여 용접봉에 피전류가 통전되어 전류검출기(SN)에 이 미전류에 의한 유기전압이 발생되고 이 신호 전압은 정류기(BD2)에서 정류되어 저항(R3)(R4)에서 분해된 다음 저항(R5)(R6)을 거쳐 트랜지스터(Q1)의 베이스측에 인가되어 트랜지스터(Q1)을 동작시키며 트랜지스터(Q1)의 콜렉터전위와 콘덴서(C2)의 전하는 다이오드(D2)를 거쳐 방전되므로 트랜지스터(Q4)가 OFF로 되면서 플립플롭(F.F)회로의 일측 트랜지스터(Q2)는 ON, 타측 트랜지스터 (Q3)는 OFF가 되어 전류는 저항(R9) 및 저항(R19)을 거쳐 트랜지스터(Q5)의 베이스에 공급된다. 따라서 트랜지스터(Q5)의 동작으로 릴레이(Ry)가 동작하여 접점(b)은 개방되고 접점(a)은 접속되어 보조트랜스(T2)의 2차코일(V2)의 전원을 트라이악(Tra)의 게이트에 공급되므로 트라이악(Tra)이 통전되어 전원트랜스(T1)의 1차 코일에 주전원이 공급되는 동시 2차코일에 고압의 용접 전류가 공급되어 용접되게 된다. 그리고 용접이 끝나 용접봉(X)을 피용접물(Y)에서 분리시키면 용접봉(X)가 피용접물(Y) 사이에 고전압이 발생되면서 이 전압은 다이오드(D1)를 거쳐 저항(R13,R14)에서 분배되고 이 전압은 용접시 전원 트랜스(T1)의 2차 코일(T1-2)의 유기전압보다 높게 전압을 설정한 제너다이오드(ZD1)를 항복 통전되게되어 저항(R15)의 양단에 전압이 발생되면서 저항(16)을 거쳐 콘덴서(C2)에 순간적으로 충전되고 이 충전 전압은 저항(R17, R18)으로 분배되어 트랜지스터(Q4)를 동작시키므로 플립플롭(F.F)회로의 타측 트랜지스터(Q3)는 ON이 되고 일측 트랜지스터(Q2)는 OFF가 되면서 트랜지스터(Q5) 및 릴레이(Ry) 동작이 정지되어 접점(a)(b)은 처음 상태로 복귀되고 전원트랜스(T1)의 트라이악 (Tra)의 동작도 정지되어 용접 전원이 차단되는 것이다.According to the present invention as described above, when the welding rod X is brought into contact with the welded object Y, the welding rod X is avoided to the welding rod through the contact b of the relay Ry at the secondary coil V 1 of the auxiliary transformer T 2 at that moment. The current is energized to generate an induced voltage due to the current in the current detector SN, and this signal voltage is rectified in the rectifier BD 2 , decomposed in the resistor R 3 , R 4 , and then the resistor R 5 . (R 6) a via is applied to the base side of the transistor (Q 1) sikimyeo operation the transistor (Q 1) so discharge through the diode (D 2) the charge on the collector potential of the transistor (Q 1) and the capacitor (C 2) As the transistor Q 4 is turned OFF, one transistor Q 2 of the flip-flop (FF) circuit is turned ON, the other transistor Q 3 is turned OFF, and the current passes through the resistor R 9 and the resistor R 19 . It is supplied to the base of the transistor Q 5 . Accordingly, the relay Ry is operated by the operation of the transistor Q 5 so that the contact b is opened and the contact a is connected to turn on the power supply of the secondary coil V 2 of the auxiliary transformer T 2 . Since the triac Tra is energized and supplied to the gate of Tra, high-pressure welding current is supplied and welded to the simultaneous secondary coil in which the main power is supplied to the primary coil of the power transformer T 1 . When welding ends and the welding rod (X) is separated from the welded object (Y), the welding rod (X) generates a high voltage between the welded object (Y) and the voltage passes through the diode (D 1 ) and the resistance (R 13 , R 14). ) distributed and the voltage secondary winding (T 1 of the power transformer (T 1) during welding in - is to be energized to a zener diode (ZD 1) a higher set voltage higher than the induced voltage of the second) yield resistance (R 15) The voltage is generated across the capacitor and is instantaneously charged through the resistor 16 to the capacitor C 2. The charging voltage is distributed to the resistors R 17 and R 18 to operate the transistor Q 4 , so that the flip-flop FF When the other transistor Q 3 of the circuit is turned ON and one transistor Q 2 is turned OFF, the operation of the transistor Q 5 and the relay Ry is stopped and the contacts (a) and (b) are returned to their initial states. The operation of the triac Tra of the power supply transformer T 1 is also stopped to cut off the welding power supply.

이와 같은 본 고안에 의하면 용접전원 트랜스의 1차코일측에 트라이악을 연결하여 용접봉의 접촉 개폐에 따라 용접봉을 통전시키는 미전류의 감지에 의하여 게이트전원을 제어하여 자동적으로 용접전원을 개폐할 수 있게 하였기 때문에 종래의 용접기에서 나타나는 스위치조작의 불편과 고장이 빈번하던 폐단이 개선됨은 물론이고 회로구성이 간단하여 고장율이 적어지게 되는 것이다.According to the present invention, by connecting the triac to the primary coil side of the welding power transformer, the gate power is controlled and automatically opened and closed by controlling the gate power according to the detection of the uncurrent that energizes the welding rod according to the contact opening and closing of the welding rod. As a result, the inconvenience of the switch operation and the closed end frequently occurring in the conventional welding machine are improved, as well as the circuit configuration is simple, so that the failure rate is reduced.

Claims (1)

도면에 표시한 바와 같이 용접 전원트랜스(T1)의 1차코일측에 트라이악(Tra)을 연결하고 보조트랜스(T2)의 2차코일(V2)의 일측 도선을 릴레이(Ry)의 접점(a)을 통하여 트라이악의 게이트측단자(G)에 연결하며 보조트랜스(T2)의 2차코일(V1)의 타측도선은 릴레이(Ry)의 접점(b)을 통하여 트랜스(T1)의 2차코일측용접봉(X)측에 연결하고 용접봉의 도선측에 전류감지기(SN)와 플립플롭(F.F) 회로를 연결하여서 된 전기용접기의 무접점개폐장치.As shown in the drawing, the triac Tra is connected to the primary coil side of the welding power supply transformer T 1 , and one side lead of the secondary coil V 2 of the auxiliary transformer T 2 is connected to the relay Ry. It is connected to the gate side terminal (G) of the triac through the contact (a), and the other lead of the secondary coil (V 1 ) of the auxiliary transformer (T 2 ) is connected to the transformer (T) through the contact (b) of the relay (Ry). A contactless switchgear of an electric welder connected to the secondary coil side welding rod (X) of 1 ) and the current sensor (SN) and flip-flop (FF) circuits connected to the lead wire side of the welding rod.
KR7905567U 1979-09-13 1979-09-13 A.c arc welding machine with semiconductor power savind circwite KR810002024Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR7905567U KR810002024Y1 (en) 1979-09-13 1979-09-13 A.c arc welding machine with semiconductor power savind circwite

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Application Number Priority Date Filing Date Title
KR7905567U KR810002024Y1 (en) 1979-09-13 1979-09-13 A.c arc welding machine with semiconductor power savind circwite

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