Method and apparatus for mold injection

Details Method and apparatus for mold injection Method and apparatus for mold injection

B - Operations, Transporting

29

C

18/696

B29C 45/54 (2006.01) B29C 45/07 (2006.01)

Patent

CA 1176419

ABSTRACT The method and apparatus for the injection of an injection material into a mold includes an upright extruder mechanism having an upright feed screw driven from its lower end. Material introduced at the top of the extruder is fed by the screw outwardly of the extru- der through an outlet projected laterally outwardly from the extruder at a position adjacent the lower end of the screw. The extruder outlet constitutes a piston receivable within a cylindrical material chamber of an injection nozzle unit. Material fed in one direction in incremental amounts from the extruder and into the material chamber when the extruder is moved in one direction relative to the injection nozzle unit, and is then forced from the material chamber by the extruder outlet and into the nozzle unit for injection into a mold when the extruder is moved in an opposite direction relative to the nozzle unit.

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