Electro-hydraulic ram control apparatus

Details Electro-hydraulic ram control apparatus Electro-hydraulic ram control apparatus

1978-02-27

1980-09-16

Lazarus, Richard B.

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 100, B29F 106

Patent

active

042227259

ABSTRACT:
A control system for the ram of a hydraulic injection molding press, the injection speed or velocity of which is to be precisely controlled according to a predetermined velocity command signal. A programmable relief valve is used to effect accurate control over the flow of hydraulic fluid under pressure to the ram cylinder and is responsive to signals representing diverse conditions of operation of the press.
In one application of the concept, velocity and subsequent holding pressure control of a ram are obtained.

REFERENCES:
patent: 3456298 (1969-07-01), Foster et al.
patent: 3726334 (1973-04-01), Sallberg
patent: 3860801 (1975-01-01), Hunkar
patent: 3870445 (1975-03-01), Hold et al.
patent: 3920367 (1975-11-01), Ma et al.
patent: 3932083 (1976-01-01), Boettner

Affiliated with

Also associated with

Rating

Electro-hydraulic ram control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electro-hydraulic ram control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-hydraulic ram control apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-538399