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
Patent
1981-09-03
1984-01-17
Pavelko, Thomas P.
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
425548, 425549, 425550, 425558, B29F 108
Patent
active
044262019
ABSTRACT:
Screw feeder and ram injector units for injection molding presses are disclosed. The feeder and injector units incorporate several novel features including power extension and retraction of the feeder unit by the drive ram of the injector unit. The screw feeder unit is supported directly on the ram unit without the necessity of separate supports on the press frame. A ram drive piston and injector plunger are laterally supported by means supporting the drive assembly on the injector assembly. Temperature control of molding compound is afforded by fluid circulation in a block carried on the inlet area of the screw feeder and a jacketed outlet nozzle on the ram injector.
REFERENCES:
patent: 2309943 (1943-02-01), Ernst
patent: 2322200 (1943-06-01), Tucker
patent: 2890491 (1959-06-01), Hendry
patent: 3192299 (1965-06-01), Hendry
patent: 3247304 (1966-04-01), Ninneman
patent: 4067673 (1978-01-01), Hendry
patent: 4082486 (1978-04-01), Cerano
patent: 4260359 (1981-04-01), Dannels
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