Injection molding control method

Details Injection molding control method Injection molding control method

1973-12-03

1978-01-03

Kucia, Richard R.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Positioning of a mold part to form a cavity or controlling...

264 401, 264 403, B29G 300

Patent

active

040667251

ABSTRACT:
The control cycle for an injection molding machine comprises successive fill, compaction, hold, cure and mold open times. The ram position and mold pressure are monitored at predetermined times respectively after the molding cycle has begun. If the ram position is out of tolerance, the fill pressure is adjusted to compensate for the deviation. If the mold pressure is out of tolerance, the compaction pressure is adjusted to compensate for the deviation in mold pressure.

REFERENCES:
patent: 3632246 (1972-01-01), Ichikawa
patent: 3642404 (1972-02-01), Nagawa
patent: 3698845 (1972-10-01), Paulson
patent: 3726334 (1973-04-01), Salberg
patent: 3767339 (1973-10-01), Hunkar
patent: 3784657 (1974-01-01), Hutchinson
patent: 3840312 (1974-10-01), Paulson

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