JPS5770092A - Pressurizing/releasing detector for resistance welding electrode - Google Patents

Pressurizing/releasing detector for resistance welding electrode

Info

Publication number
JPS5770092A
JPS5770092A JP14744080A JP14744080A JPS5770092A JP S5770092 A JPS5770092 A JP S5770092A JP 14744080 A JP14744080 A JP 14744080A JP 14744080 A JP14744080 A JP 14744080A JP S5770092 A JPS5770092 A JP S5770092A
Authority
JP
Japan
Prior art keywords
electrode
pressurizing
impedance
transformer
welding
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.)
Granted
Application number
JP14744080A
Other languages
Japanese (ja)
Other versions
JPS5938875B2 (en
Inventor
Masahiro Kato
Katsuo Yoshimura
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.)
Dengensha Toa Co Ltd
Original Assignee
Dengensha 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 Dengensha Manufacturing Co Ltd filed Critical Dengensha Manufacturing Co Ltd
Priority to JP14744080A priority Critical patent/JPS5938875B2/en
Publication of JPS5770092A publication Critical patent/JPS5770092A/en
Publication of JPS5938875B2 publication Critical patent/JPS5938875B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Resistance Welding (AREA)

Abstract

PURPOSE: To fetch the moving start signal for an electrode or the work irrespectively of the stroke of the electrode by detecting the open or close state of an electrode circuit at the pressurizing/releasing of the electrode during welding purely electrically on the primary side of a welding transformer.
CONSTITUTION: A welding transformer 4 and an electronic switch 2 for opening and closing of electric power are connected in series to an AC power ssource 1, and a high impedance circuit 6 is connected in parallel with the switch 2. A voltage detector 3 is inserted to the output terminal side of a welding controller provided on the primary side of the transformer 4 and the change in the impedance on the primary side is detected. If an electrode 7 existing in the secondary circuit of the transformer 4 causes short circuiting under pressure contact with the work 8 inbetween, an impedance Z2 decreases and the voltage share with Z1 changes. The terminal voltage of this impedance Z2 is monitored with the voltage detector 3, to detect its fluctuations, whereby the pressurizing/releasing state of the electrode 7 is detected.
COPYRIGHT: (C)1982,JPO&Japio
JP14744080A 1980-10-21 1980-10-21 Pressure/release detection device for resistance welding electrodes Expired JPS5938875B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14744080A JPS5938875B2 (en) 1980-10-21 1980-10-21 Pressure/release detection device for resistance welding electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14744080A JPS5938875B2 (en) 1980-10-21 1980-10-21 Pressure/release detection device for resistance welding electrodes

Publications (2)

Publication Number Publication Date
JPS5770092A true JPS5770092A (en) 1982-04-30
JPS5938875B2 JPS5938875B2 (en) 1984-09-19

Family

ID=15430379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14744080A Expired JPS5938875B2 (en) 1980-10-21 1980-10-21 Pressure/release detection device for resistance welding electrodes

Country Status (1)

Country Link
JP (1) JPS5938875B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03268879A (en) * 1990-03-19 1991-11-29 Honda Motor Co Ltd Abnormality detecting method for welding gun

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03268879A (en) * 1990-03-19 1991-11-29 Honda Motor Co Ltd Abnormality detecting method for welding gun

Also Published As

Publication number Publication date
JPS5938875B2 (en) 1984-09-19

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