| 摘要 |
PROBLEM TO BE SOLVED: To provide a resistance welder capable of obtaining less electrode pressure than pressurizing force by the weight of the electrode pressure supply mechanism and thermo-compression bonding or spot welding the object to be welded by decreasing or increasing the electrode pressure during welding. SOLUTION: This welder for thermo-compression bonding or spot welding is equipped with an upper slider which is driven to the object to be welded, a lower slider which is sliddably held with the upper slider, an electrode, a stopper, a pressing means which presses the lower slider to the object, and a pressing force control means which abuts on the stopper before the electrode abuts on the object following the move of the lower slider and presses the lower slider to the direction opposite to the object.
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