JPS5654461A - Reciprocative driving device - Google Patents

Abstract

PURPOSE: To achieve the realization of constant speed forward movement and high- speed backward movement without producing any impact by providing a reciprocative movement change-over mechanism of the time required for backward movement shorter than that for forward movement, a driven body connected to this mechanism and a defining mechanism which defines the forward movement speed.

CONSTITUTION: The device is constituted by a driving source 1 which is constituted by a sprocket 5 moving in a fixed direction at all times, a chain 6 put on this and a motor etc., a reciprocative movement change-over mechanism 2 which is connected to said driving source, changes over the movement in a fixed direction to reciprocative movements, and has such a fast return function to smoothly perform respective inversion of said forward and backward movements and of the required time becoming shorter than the time required for forward movement, a driven body 3 which is connected to said reciprocative movement change-over mechanism 2, and a defining mechanism which is connected to said driven body and so defines its forward movement speed as not to become faster than a predetermined speed. Thereby, the constant-speed forward movement and high-speed backward movement may be realized, and the driven body may be reciprocatively controlled at a high speed and high efficiency.

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