Displacement and/or actuating force drive device for an injectio

Details Displacement and/or actuating force drive device for an injectio Displacement and/or actuating force drive device for an injectio

1992-04-10

1994-08-16

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

Mold motion or position control

4254501, 4254519, 425589, B29C 4580

Patent

active

053381742

ABSTRACT:
A displacement and/or actuating force drive device for an injection molding machine, for example, for actuation of the push-type screw of a plasticizing extruder or the closing unit of an injection mold, comprises generally a hydraulic stroke drive, in tandem in rows or in series with a mechanical stroke spindle system driven by a brushless three-phase servomotor type electromotor. The motor is associated with a positioning regulation device dependent upon the closing and opening position of the injection mold. The hydraulic stroke drive can be actuated from a pressure regulation circuit by a servo valve. The circuit depends upon the closing force between the two mold halves of the injection mold.

REFERENCES:
patent: 3156014 (1964-11-01), Wenger
patent: 3856454 (1974-12-01), Aoki
patent: 4988273 (1991-01-01), Faig et al.

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