Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Article ejector or stripper control
Patent
1977-09-15
1980-06-17
Briggs, William R.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Article ejector or stripper control
425144, 425149, B29F 106
Patent
active
042081769
ABSTRACT:
A cycle control for plastic injection molding machines. All time-responsive machine controls are eliminated by initiating or terminating machine functions in response to actual, physical properties experienced by the machine or by the plastic or in the mold, rather than in response to elapsed-time intervals. Means are provided for changing the injection pressure to the holding pressure when the pressure in the mold cavity reaches a predetermined pressure, means are provided for ending the holding pressure and initiating the cold/cure portion of the cycle in response to actual, physical conditions of the plastic in the mold, such as pressure or temperature, and means are provided for opening the clamp to eject the molded part and thus end the cold/cure portion of the cycle in response to actual, physical properties of the plastic in the mold, such as pressure or temperature. The machine cycle is thereby completely independent of time, and cycle time may be minimized.
REFERENCES:
patent: 2632207 (1953-03-01), Mahla
patent: 3339227 (1967-09-01), Ehrenfreund
patent: 3718721 (1973-02-01), Gould et al.
patent: 3767339 (1973-10-01), Hunkar
patent: 3840312 (1974-10-01), Paulson et al.
patent: 3941534 (1976-03-01), Hunkar
Briggs William R.
Litton Industrial Products Inc.
Ribando Brian L.
LandOfFree
Time independent cycle control for plastic injection molding mac does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Time independent cycle control for plastic injection molding mac, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time independent cycle control for plastic injection molding mac will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-473395