Hydraulic control circuit for an injection molding machine

Details Hydraulic control circuit for an injection molding machine Hydraulic control circuit for an injection molding machine

1994-07-28

1996-05-07

Heitbrink, Tim

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

264 407, 425146, B29C 4577

Patent

active

055139710

ABSTRACT:
An hydraulic control circuit for an injection molding machine feedback-controls the operations of an injection cylinder by connecting an hydraulic source and an oil tank to a hydraulic actuator through a plurality of servo valves. The plurality of servo valves, such as four-port servo valves, are connected in parallel and a servo valve control function unit is used which controls the servo valves preferentially to the feedback control to permit series or parallel control of the servo valves. Thus, even when the specifications of an injection molding machine require a larger size and higher speed, the size of the injection molding machine is prevented from increasing, the cost is decreased, the response speed and the stability are remarkably improved, and fine control is realized over a wide control range.

REFERENCES:
patent: 4712991 (1987-12-01), Hehl
patent: 4802267 (1989-02-01), Hosoya

Affiliated with

Also associated with

Rating

Hydraulic control circuit for an injection molding machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic control circuit for an injection molding machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control circuit for an injection molding machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1222840