Hydraulic ram operated extruders

Details Hydraulic ram operated extruders Hydraulic ram operated extruders

1995-05-02

1996-01-23

Nguyen, Khanh P.

Plastic article or earthenware shaping or treating: apparatus

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

Cutter control

425145, 425308, 425311, 264 407, 264142, B29C 4792

Patent

active

054861047

ABSTRACT:
The disclosure relates to a hydraulic ram operated extruder (10, 11, 13, 14) having an extrusion die (12) from which an extrudate is delivered and a motor driven cutter (48, 49) at the die to sever the extrudate repeatedly to produce individual pieces of extrudate. A hydraulic fluid circuit includes a pump (16) and control valves (19, 22, 23) delivers hydraulic fluid to the ram of the extruder at a substantially constant volume flow-rate and a control device responsive to the speed of advance of the ram in the extruder controls the motor device of the cutter to produce blanks of substantially equal volume.

REFERENCES:
patent: 4719808 (1988-01-01), Baumann et al.
patent: 4850839 (1989-07-01), Cowley et al.
patent: 5169649 (1992-12-01), Sikora et al.

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