JPS5677075A - Defective welding detecting apparatus - Google Patents
Defective welding detecting apparatusInfo
- Publication number
- JPS5677075A JPS5677075A JP15237279A JP15237279A JPS5677075A JP S5677075 A JPS5677075 A JP S5677075A JP 15237279 A JP15237279 A JP 15237279A JP 15237279 A JP15237279 A JP 15237279A JP S5677075 A JPS5677075 A JP S5677075A
- Authority
- JP
- Japan
- Prior art keywords
- primary
- welding
- comparator
- level
- signal
- 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
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Arc Welding Control (AREA)
Abstract
PURPOSE: To detect defective welding surely with a simple circuit composition, by detecting the envelope belt of welding the primary electric current wave-form and by controlling the standard voltage of comparator in accordance with its level.
CONSTITUTION: The welding primary electric current flowing through the primary side of welding transformer 14 is detected by transformer 22, and sent to the primary amplifier 26 through rectifier 24. This signal is sent to the primary comparator 30 and low-pass filter 32 after level adjustment and separation are made on the signal at the secondary amplifier 28. The signal from which high frequency component has been removed by low-pass filter 32, is impressed to the primary comparator 30 after it is reduced to a required level at voltage level transducer 34. Both signals are compared with comparator 30, and only when the output is low level, driving circuit 40 is added and relay 42 is operated, and informing mechanism 44 informs occurrences of defective welding.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15237279A JPS5832037B2 (en) | 1979-11-27 | 1979-11-27 | Welding defect detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15237279A JPS5832037B2 (en) | 1979-11-27 | 1979-11-27 | Welding defect detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5677075A true JPS5677075A (en) | 1981-06-25 |
JPS5832037B2 JPS5832037B2 (en) | 1983-07-09 |
Family
ID=15539081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15237279A Expired JPS5832037B2 (en) | 1979-11-27 | 1979-11-27 | Welding defect detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5832037B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01159976U (en) * | 1988-04-28 | 1989-11-07 |
-
1979
- 1979-11-27 JP JP15237279A patent/JPS5832037B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01159976U (en) * | 1988-04-28 | 1989-11-07 |
Also Published As
Publication number | Publication date |
---|---|
JPS5832037B2 (en) | 1983-07-09 |
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