Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Means responsive to abnormal condition completely stop...
Patent
1998-04-24
2000-05-16
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Means responsive to abnormal condition completely stop...
425151, B29C 4580
Patent
active
06062843&
ABSTRACT:
A motor control apparatus for an injection molding machine has a control function section for stopping a drive motor; i.e., a servomotor in order to stop a movable member, upon reception of an open signal indicating that a safety door is opened. The motor control apparatus further includes an additional control function section for performing position control for the servomotor, upon reception of the open signal, so as to stop the movable member at a predetermined position. Therefore, when the safety door is opened and thus the open signal is supplied to the additional control function section, the additional control function section performs position control for the servomotor such that the movable member stops at the predetermined position.
REFERENCES:
patent: 3628901 (1971-12-01), Paulson
patent: 4710119 (1987-12-01), Otake
Heitbrink Tim
Nissei Plastic Industrial Co. Ltd.
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