Injection molding control

Details Injection molding control Injection molding control

1974-11-29

1976-01-13

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

425149, B29F 102, B29F 1022, B29F 106

Patent

active

039320839

ABSTRACT:
The control system for an injection molding machine providing 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: 3693946 (1972-08-01), Merritt
patent: 3712772 (1973-01-01), Hunkar
patent: 3721512 (1973-03-01), Ma et al.
patent: 3752363 (1973-08-01), Fegley et al.
patent: 3767339 (1973-10-01), Hunkar
patent: 3840312 (1974-10-01), Paulson et al.

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