| 摘要 |
PURPOSE:To stably obtain desired welding strength by dividing pressing force added to the title coated fine wire and a terminal plate at the time of peeling off coating and resistance welding to add the optimum pressing force to these respectively. CONSTITUTION:When the terminal 43 and the coated fine wire 40 are mounted on a lower electrode 31 and an operating button is pushed, compressed air is supplied to a main air cylinder 2 and in accordance with projection of a piston rod 3, a pressure barrel 10 and a ram fall. The rod 3 is stopped by a stopped 5 and the fall of the whole is stopped and at the same time, a microswitch 23 is pushed by a pin 22 and a pulse AC power source is operated and a heater electrode 30 is heated to the prescribed temperature and the coating 42 of the coated fine wire 40 is peeled off under the pressing force set by a knob 12. When it is detected that the heater electrode 30 is cooled up to the prescribed temperature by a thermocouple 32, the compressed air is supplied to an auxiliary air cylinder 18 and a compression spring 16 is compressed via the knob 12 and a nut 14 to execute pressing by the pressing force suitable for welding. When a nut 21 abuts on a stopper 20, a peeled-off wire rod 41 and the terminal 43 are welded together. |
