| 摘要 |
PURPOSE:To enable the application of a production system coping with the change of circuit board dimensions by providing a means for adjusting the span of rails supporting the board, and changing a space between a base holder and a slide holder automatically and at a plurality of positions simultaneously. CONSTITUTION:A spline shaft 26 is so provided as to be freely rotatable along and in parallel with rails 19 and 20. Also, a plurality of base holders 27 and 28 to be fixed to said spline shaft 26 and a plurality of slide holders 29 and 30 as slidable on said shaft 26 are inserted at equal intervals. Furthermore, a rotatable screw shaft 31 is provided in parallel with said shaft 26 and fitted with blocks 41 and 42 as axially movable with the rotation thereof. Also, the blocks 41 and 42, and a plurality of the slide holders 29 and 30 are so connected to each other that said holders 29 and 30 can rotate with the turn of the spline shaft 26.
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