| 摘要 |
PROBLEM TO BE SOLVED: To allow maintaining a tip face of an ejection pin at a desired position by securely holding a mold ejection plate in a mechanical end position without overloading an EJ servo motor, when an EJ mechanism is on stand-by in a pull-back ejection mechanism. SOLUTION: A means, which controls the mold ejection plate so that it is pressed to the mold and retained, is installed. Said control is achieved by; switching the EJ servo motor to a low torque control mode after the time point when the mold ejection plate almost reached the mechanical end position abutting the mold, while driving the EJ servo motor under a low-speed feedback control so that the mold ejection plate maintains the mechanical end position abutting the mold when the ejection mechanism is on stand-by. COPYRIGHT: (C)2007,JPO&INPIT
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