| 摘要 |
PURPOSE:To perform two actions by a single power transmitting medium, by fitting a cam ring to be helically advanceably mounted to the peripheral surface of a screw shaft, which is rotated in both normal and reverse directions, and providing a fed-object press-sending arm, so that it is able to reciprocate straight advancing only in a phase of specific direction, in the peripheral surface of said cam ring. CONSTITUTION:If an arm 1 falls being laid down in a horizontal position by turning a cam ring 9 clockwise with a screw shaft 3, the cam ring 9, which turns to a position where a notched part 9a on its peripheral surface is opposed to a stopper roller 13, is released from restricting force of the stopper roller 13 which has inhibited a movement of the cam ring 9 till that time, and the cam ring 9, which passes through the upper part of the stopper roller 13 beginning to move rightward by rotating the screw shaft 3, discharges a fed object D outside a machine while feeding the object to be pressed by a side surface of the arm 1. In this way, a reciprocating turn and straight advance reciprocation, which are different in their acting direction, can be performed by a single power transmitting medium by utilizing the screw shaft for driving the arm.
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