| 摘要 |
PURPOSE:To recover a heat transfer liquid while preventing said liquid from being discharged to the outside of a soldering device and to reduce the coat of products by providing guide rails for engaging and conveying printed circuit boards to the inside of a conveyance path. CONSTITUTION:The printed circuit boards 1 travel on wheels of the guide rails 2 and the wheels rotate. The heat transfer liquid 6 which is made into liquid in the engaging grooves passes the spacing between the guide rails 22 and the wheels and drop into respective passages 10, 12. Liquid draining is thus executed. Then, the heat transfer liquid flows on the slopes of the respective passages 10, 12 and enters a storage tank 5 where the liquid is recovered. The cost of the products is thus reduced economically without replenishing the heat transfer liquid. |
