JPS5770092A - Pressurizing/releasing detector for resistance welding electrode - Google Patents
Pressurizing/releasing detector for resistance welding electrodeInfo
- 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
Links
- 238000003466 welding Methods 0.000 title abstract 5
- 230000007423 decrease Effects 0.000 abstract 1
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
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)
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 |
-
1980
- 1980-10-21 JP JP14744080A patent/JPS5938875B2/en not_active Expired
Cited By (1)
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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