| 摘要 |
PROBLEM TO BE SOLVED: To extend lives of mechanisms when the retreating motion of a holding block is stopped compulsively by contact between the mechanisms in order to perform the forward acceleration of a member for injection promptly. SOLUTION: In a configuration in which a first electric servo motor and a second servo motor are accelerated in the advance direction and the retreat direction by a screw, respectively, the screw is stopped during a prescribed acceleration period, and the retreating motion of a holding member which is driven linearly by the second servo motor is stopped compulsively in prescribed timing by contact between the mechanisms, a shock absorbing mechanism for relaxing a shock generated when the mechanisms contact with each other is installed. COPYRIGHT: (C)2009,JPO&INPIT
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