| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an accumulator to assist during the starting in an opposite direction at the stroke end of a reciprocating moving object. SOLUTION: A piston 30 at the inside of a tube and an external moving body 40 at the outside thereof are magnetically intercoupled, and the external movement body 40 and a card holding body 3 are intercoupled. A communication hole 25a is formed in the middle in a longitudinal direction of the tube. When the card holding body 3 is reciprocated with the aid of a linear motor, air in a front in the direction of movement thereof is compressed and the compression is accumulated during a time in which the piston 30 is moved to an end part through the communication hole 25a. During switching of an advancing direction by the linear motor, the start of the external moving body 40, i.e., the card holding body 3, is assisted by an accumulated air pressure.</p> |
