JPS57118864A - Dc welding device - Google Patents

Dc welding device

Info

Publication number
JPS57118864A
JPS57118864A JP405881A JP405881A JPS57118864A JP S57118864 A JPS57118864 A JP S57118864A JP 405881 A JP405881 A JP 405881A JP 405881 A JP405881 A JP 405881A JP S57118864 A JPS57118864 A JP S57118864A
Authority
JP
Japan
Prior art keywords
circuit
welding
energizes
electrode
base metals
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP405881A
Other languages
Japanese (ja)
Inventor
Tetsuo Hayashi
Saburo Okumura
Kazuhisa Wakiya
Hideo Ishii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sansha Electric Manufacturing Co Ltd
Original Assignee
Sansha Electric Manufacturing Co Ltd
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.)
Filing date
Publication date
Application filed by Sansha Electric Manufacturing Co Ltd filed Critical Sansha Electric Manufacturing Co Ltd
Priority to JP405881A priority Critical patent/JPS57118864A/en
Publication of JPS57118864A publication Critical patent/JPS57118864A/en
Pending legal-status Critical Current

Links

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

Landscapes

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

Abstract

PURPOSE:To prevent wasteful electric power consumption and the production of noise while not in welding by the constitution wherein a control circuit is energized to conduct switching transistors alternately only during short circuiting between the base metals and an electrode. CONSTITUTION:When base metals 30 and an electrode 32 are short circuited, a short circuit voltage detecting circuit 34 energizes a control circuit 20 via a flip- flop (FF)36. Then, the circuit 20 conducts switching transistors (ST)10, 12 alternately, thereby supplying the DC voltage of DC power source consisting of an AC power source 2, a rectifier bridge circuit 4 and a smoothing capacitor 14 between welding output terminals 25, 28 and executing welding. If in this state the electrode 32 is moved apart from the base metals 30 and is released, a transformer 6 is put in a no-load state, and the voltage between the terminals 25, 28 rises so that a no load voltage detecting circuit 48 de-energizes the circuit 20 via the FF36. When the circuit 20 de-energizes, the STs 10, 12 are made non- conducting, and this terminates the welding.
JP405881A 1981-01-14 1981-01-14 Dc welding device Pending JPS57118864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP405881A JPS57118864A (en) 1981-01-14 1981-01-14 Dc welding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP405881A JPS57118864A (en) 1981-01-14 1981-01-14 Dc welding device

Publications (1)

Publication Number Publication Date
JPS57118864A true JPS57118864A (en) 1982-07-23

Family

ID=11574260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP405881A Pending JPS57118864A (en) 1981-01-14 1981-01-14 Dc welding device

Country Status (1)

Country Link
JP (1) JPS57118864A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06101338A (en) * 1992-09-18 1994-04-12 Kajima Corp Form for beam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06101338A (en) * 1992-09-18 1994-04-12 Kajima Corp Form for beam

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