Screw feeder for injection molding machine

Details Screw feeder for injection molding machine Screw feeder for injection molding machine

1976-04-16

1977-08-30

Reeves, Robert B.

Dispensing

With discharge assistant

Plural

222413, 425448, 425557, B29B 506

Patent

active

040449254

ABSTRACT:
A power-retractable feeder for an injection molding machine in which an actuator is adapted to forcibly seal a button-type outlet nozzle of the feeder against a side inlet port of a charging cylinder without developing an unbalanced lateral load on the cylinder. As disclosed, the reaction force developed on the actuator is transmitted to the side of the cylinder opposite the inlet. The actuator is selectively operable to retract the feeder nozzle from the cylinder for inspection, removal, maintenance, or the like. The disclosed feeder is of the screw type driven by a rotary motor through a coupler which isolates an axial reaction force on the screw from the motor. Also disclosed is a remote actuator and associated linkage for operating a shut-off valve in the feeder nozzle at either the extended or retracted position of the nozzle.

REFERENCES:
patent: 2359840 (1944-10-01), Goesslling
patent: 2493805 (1950-01-01), Dinzi
patent: 3191234 (1965-06-01), Hendry
patent: 3723037 (1973-03-01), Formo

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