Injection molding controller with process variable learning

Details Injection molding controller with process variable learning Injection molding controller with process variable learning

1990-06-15

1991-11-05

Heitbrink, Timothy

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

264 405, 264 407, 425149, B29C 4577

Patent

active

050627856

ABSTRACT:
A controller for an injection molding machine controls the injection ram by reference to profiles having segments with programmable setpoints. The injection molding machine is initially controlled during each segment in an open-loop manner. Closed-loop control is then adopted. The difference between the process signal, e.g. ram velocity, and the setpoint at the end of each segment is used to change the current setpoint to improve the open-loop accuracy over time. The learning rate of change of the open-loop setpoints decreases after the initial correction.

REFERENCES:
patent: 3797808 (1974-03-01), Ma
patent: 3859400 (1975-01-01), Ma
patent: 4060362 (1977-11-01), Wilson, III
patent: 4146601 (1979-03-01), Bishop
patent: 4695237 (1987-09-01), Inaba
patent: 4696632 (1987-09-01), Inaba
patent: 4774675 (1988-09-01), Kagawa
patent: 4816197 (1989-03-01), Nunn

Affiliated with

Also associated with

Rating

Injection molding controller with process variable learning does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Injection molding controller with process variable learning, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection molding controller with process variable learning will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-495776