| 摘要 |
PURPOSE:To improve the accuracy of cutting length and to prevent damage of a working tool driving mechanism by applying the resistance force to an oscillating block in the opposite direction to the moving direction of a workpiece and bringing approximate uniform velocity or perfect uniform velocity to the oscillating block. CONSTITUTION:A piston 17 of a fluid cylinder 16 disposed parallel to a workpiece 12 is connected to an oscillating block 8, and an accumulator 18 for pressing the oscillating block 8 in the opposite direction to the travelling direction of the workpiece 12 is provided on the cylinder 16. A driving motor 1 is driven to reciprocate the oscillating block 8 in the directions of arrows (i), a main crankshaft 9 is driven to reciprocate a metal mold 11 in the directions of arrows (ii) and while the metal mold 11 is moved in the direction of an arrow (iii) at the approximate uniform velocity substantially equal to that of the workpiece 12, the workpiece 12 is subjected to running press molding. At this time the oscillating block 8 is always pressed in the opposite direction to the travelling direction of the workpiece 12 through a piston rod 17 by pressure from the accumulator 18 to conduct molding.
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