| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation control method of a spot welding device, which stops operation in a visually confirmable state of a welding electrode or a sub-pressure part and a member to be welded during emergency stop when abnormal state occurs.SOLUTION: In spot welding, welding is carried out by pinching and pressing the member 100 to be welded by a fixed side electrode 15 and a movable side electrode 25, applying sub-pressing force by the sub-pressure part 38, and energizing the fixed side electrode 15 and the movable side electrode 25. The spot welding device has a welding anomaly detecting means 45 which detects operation anomaly, separates the sub-pressure part 38 from the member 100 to be welded during emergency stop based on the anomaly detection of the welding anomaly detecting means 45, and separates the movable side electrode 25 from the member 100 to be welded. Visual confirmation of a welding part in the member 100 to be welded is made easy, visual confirmation of surroundings including the fixed side electrode 15, the movable side electrode 25, and the sub-pressure part 28 is made possible, countermeasures against failure are rapidly securely carried out. |
