KR960021341A - Electric shock protector of AC arc welding machine - Google Patents

Electric shock protector of AC arc welding machine Download PDF

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Publication number
KR960021341A
KR960021341A KR1019940038266A KR19940038266A KR960021341A KR 960021341 A KR960021341 A KR 960021341A KR 1019940038266 A KR1019940038266 A KR 1019940038266A KR 19940038266 A KR19940038266 A KR 19940038266A KR 960021341 A KR960021341 A KR 960021341A
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KR
South Korea
Prior art keywords
control signal
load
transformer
phase
switching means
Prior art date
Application number
KR1019940038266A
Other languages
Korean (ko)
Other versions
KR0125894B1 (en
Inventor
하재성
Original Assignee
하재성
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 하재성 filed Critical 하재성
Priority to KR1019940038266A priority Critical patent/KR0125894B1/en
Publication of KR960021341A publication Critical patent/KR960021341A/en
Application granted granted Critical
Publication of KR0125894B1 publication Critical patent/KR0125894B1/en

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Classifications

    • 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
    • B23K9/1006—Power supply
    • B23K9/1043—Power supply characterised by the electric circuit
    • 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
    • B23K9/095—Monitoring or automatic control of welding parameters
    • B23K9/0956—Monitoring or automatic control of welding parameters using sensing means, e.g. optical

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)
  • Generation Of Surge Voltage And Current (AREA)

Abstract

본 발명은 교류전압이 트랜스의 1차권선에 인가되고 트랜스의 2차권선의 용접봉과 모재가 각각 연결되는 교류 아크 용접기에 있어서, 교류 아크 용접기의 전격방지장치는 트랜스의 1차권선에 인가되는 교류전력을 스위칭하는 교류전력 스위칭수단; 트랜스의 2차권선에 흐르는 전류변화를 검출하기 위한 검출기; 검류기에 의한 전류변화의 검출여부에 따라 부하상태 및 무부하상태를 제어하는 제어신호를 발생하고 부하상태에서 무부하상태로 전환시에 소정의 지동신간을 설정하기 위한 타이머 집적회로를 포함하는 제어신호 발생부; 위상제어 집적회로를 포함하여 무부하시에 상기 트랜스의 1차권선에 인가되는 교류전력을 교류위상에 동기하여 위상제어하는 위상제어신호를 발생하는 무부하 구동부; 제어신호 발생부의 제어신호에 응답하여 무부하시에는 위상제어신호를 선택하고 부하시에는 교류전압신호를 선택하여 출력하는 스위칭수단; 스위칭수단의 출력에 응답하여 상기 교류전력 스위칭수단을 트리거링하는 트리거회로를 구비하는 것을 특징으로 한다.The present invention is an AC arc welding machine in which the AC voltage is applied to the primary winding of the transformer and the electrode and the base material of the secondary winding of the transformer are respectively connected, the electric shock prevention device of the AC arc welding machine is applied to the primary winding of the transformer AC power switching means for switching the power; A detector for detecting a current change flowing in the secondary winding of the transformer; A control signal generator including a timer integrated circuit for generating a control signal for controlling a load state and a no load state according to whether a current change is detected by a galvanometer and for setting a predetermined operation signal when switching from a load state to a no load state. ; A no-load driver including a phase control integrated circuit to generate a phase control signal to phase-control the AC power applied to the primary winding of the transformer at no load, in synchronization with an AC phase; Switching means for selecting a phase control signal at no load and an AC voltage signal at a load in response to a control signal of the control signal generator; And a trigger circuit for triggering the AC power switching means in response to the output of the switching means.

따라서, 본 발명은 회로특성이 안정화되고 신뢰성이 향상된다.Therefore, the present invention stabilizes circuit characteristics and improves reliability.

Description

교류 아크 용접기의 전격방지장치Electric shock protector of AC arc welding machine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 의한 교류 아크 용접기의 전격방지장치의 회로구성을 나타낸 도면.1 is a view showing the circuit configuration of the electric shock prevention device of the AC arc welding machine according to the present invention.

Claims (1)

교류전압이 트랜스의 1차권선에 인가되고 트랜스의 2차권선에 용접봉과 모재가 각각 연결되는 교류 아크 용접기에 있어서, 교류 아크 용접기의 전격방지장치는 상기 트랜스의 1차권선에 인가되는 교류전력을 스위칭하는 교류전력 스위칭 수단; 상기 트랜스의 2차권선에 흐르는 전류변화를 검출하기 위한 검류기; 상기 검류기에 의한 전류변화의 검출여부에 따라 부하상태 및 무부하상태를 제어하는 제어신호를 발생하고 부하상태에서 무부하상태로 전환시에 소정의 지동시간을 설정하기 위한 타이머 집적회로를 포함하는 제어신호 발생부; 위상제어집적회로를 포함하여 무부하시에 상기 트랜스의 1차권선에 인가되는 교류전력을 교류 위상에 동기하여 위상제어하는 위상제어신호를 발생하는 무부하 구동부; 상기 제어신호 발생부의 제어신호에 응답하여 무부하시에는 상기 위상제어신호를 선택하고 부하시에는 교류전압신호를 선택하여 출력하는 스위칭수단; 상기 스위칭수낟의 출력에 응답하여 상기 교류전력 스위칭수단을 트리거링하는 트리거회로를 구비하는 것을 특징으로 하는 교류 아크 용접기의 전격방지장치.In an AC arc welding machine in which an AC voltage is applied to the primary winding of a transformer and a welding rod and a base material are respectively connected to the secondary winding of the transformer, the electric shock prevention device of the AC arc welding machine is configured to apply the AC power applied to the primary winding of the transformer. AC power switching means for switching; A galvanometer for detecting a current change flowing in the secondary winding of the transformer; Generation of a control signal for generating a control signal for controlling a load state and a no load state according to whether the current change is detected by the galvanometer, and a control signal generation including a timer integrated circuit for setting a predetermined dwell time when switching from a load state to a no load state part; A no-load driver including a phase control integrated circuit to generate a phase control signal to phase-control the AC power applied to the primary winding of the transformer at no load, in synchronization with an AC phase; Switching means for selecting the phase control signal at no load and selecting and outputting an AC voltage signal at no load in response to a control signal of the control signal generator; And a trigger circuit for triggering the AC power switching means in response to the output of the switching head. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940038266A 1994-12-28 1994-12-28 Electric shock prevention apparatus of alternating current welding machine KR0125894B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940038266A KR0125894B1 (en) 1994-12-28 1994-12-28 Electric shock prevention apparatus of alternating current welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940038266A KR0125894B1 (en) 1994-12-28 1994-12-28 Electric shock prevention apparatus of alternating current welding machine

Publications (2)

Publication Number Publication Date
KR960021341A true KR960021341A (en) 1996-07-18
KR0125894B1 KR0125894B1 (en) 1997-12-26

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ID=19404530

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940038266A KR0125894B1 (en) 1994-12-28 1994-12-28 Electric shock prevention apparatus of alternating current welding machine

Country Status (1)

Country Link
KR (1) KR0125894B1 (en)

Also Published As

Publication number Publication date
KR0125894B1 (en) 1997-12-26

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