Mold-clamping control method for injection molding machine

Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting

Reexamination Certificate

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Details

C264S040500, C264S328100, C425S137000, C425S150000, C425S154000

Reexamination Certificate

active

07041242

ABSTRACT:
The value of a monitor item is detected in a monitor region predetermined in relation to a mold closing operation during the course of a mold clamping step. Emergency processing is performed when the detected value exceeds a threshold value. There are preset an anomalous-state mold opening velocity higher than a normal-state mold opening velocity on the basis of which mold opening control is performed in a normal state, and an anomalous-state-velocity end position at which mold opening control based on the anomalous-state mold opening velocity is ended. Mold opening control based on the anomalous-state mold opening velocity is performed in a portion of the monitor region ranging from a point corresponding to time when the detection value has exceeded the threshold value, to a point corresponding to the anomalous-state-velocity end position.

REFERENCES:
patent: 4038003 (1977-07-01), Hansson
patent: 4710119 (1987-12-01), Otake
patent: 6057661 (2000-05-01), Iwashita
patent: 2002-172670 (2002-06-01), None

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