| 摘要 |
PROBLEM TO BE SOLVED: To make works advance in a processing tank in the surface treatment for in-process wiring boards without the help of a hoist so that the number of hoists can be reduced in the process line; the control can be simplified; the waiting time of the hoists can be reduced; and the productivity can be improved. SOLUTION: Along the upper edges on the both sides of the processing tank 1 in the longitudinal direction, screw shafts 11 are arranged so as to rotatably extend on each shaft line G in the longitudinal direction while being restricted to move in the direction of each shaft line. While suspending parts 31 are disposed so as to bridge both screw shafts 11, the suspending parts 31 are made possible to gear with the screw shafts when the suspending parts 31 are disposed. While the suspending parts 31 are disposed between both screw shafts 11, when being geared with the screw shafts, the suspending parts 31 are advanced by simultaneously rotating both screw shafts 11. Hence, since the suspended in-process boards can be advanced as the boards are immersed in a solution in the processing tank, the number of the hoists can be reduced. COPYRIGHT: (C)2004,JPO
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