| 摘要 |
PURPOSE:To make the gap between a work and solder liquid level and dipping depth constant by providing the limit switch to equip plural sensors on a work supporting member and by controlling the upper and lower driving motors via the limit switch. CONSTITUTION:The upper and lower driving motors 8 are rotated on using of a starting switch and the jig 1a of a work supporting member 1 and jig 7 are descended at high speed toward a solder liquid level 5. When the tip of the sensor L1 of the limit switch 2 touches on the solder liquid level 5, the number of revolutions of the driving motor 8 is reduced with the actuation of a control device 10. When the tip of the sensor L2 touches on the solder level, the revolution of the driving motor 8 is stopped by the control device 10, the part to be soldered of a work 6 is stopped slightly above the liquid level 5, a pre-heating is started and a timer is operated. When the set time of the timer is over the work 6 is again descended with reduced speed and on touching of the sensor L3 on the liquid level 5 a solder dipping stage is started and the timer is operated. On completion of the timer set time the work 6 is ascended by the control device 10.
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