Injection molding unit for injection molding machines

Details Injection molding unit for injection molding machines Injection molding unit for injection molding machines

1993-06-23

1995-05-23

Heitbrink, Tim

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

264 407, 425150, B29C 4580

Patent

active

054175585

ABSTRACT:
An injection molding unit for injection molding machines includes a first subassembly having a plasticizing unit including a screw cylinder and a screw, a second subassembly having a metering drive to rotate the screw of the plasticizing unit, a third subassembly having two drives with substantially parallel axes for providing motion of the screw cylinder relative to an injection mold, and a fourth subassembly having two drives with substantially parallel axes for producing actual displacement of the screw in the screw cylinder of the plasticizing unit, with the plasticizing unit being located substantially centrally between the two parallel axes of the third and fourth subassembly drives, and with the two drives of said fourth sub-assembly include two liquid-cooled electric servomotors, respectively, electrically connected to one another to operate synchronously.

REFERENCES:
patent: 3887170 (1975-06-01), Heindl
patent: 3914630 (1975-10-01), Lloyd et al.
patent: 4693676 (1987-09-01), Inaba
patent: 4828473 (1989-05-01), Otake et al.
patent: 4934341 (1990-06-01), Otsuka et al.
patent: 5129808 (1992-07-01), Watanabe et al.

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