Plastic injection molding electrohydraulic machine hybrid drive

Details Plastic injection molding electrohydraulic machine hybrid drive Plastic injection molding electrohydraulic machine hybrid drive

1996-10-30

1998-09-29

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

Molding pressure control means responsive to pressure at...

264 407, 425166, B29C 4577

Patent

active

058143530

ABSTRACT:
An electrohydraulic hybrid drive for a plastic injection molding machine having at least one hydraulic actuator, at least one feed system for feeding the hydraulic fluid for actuation of the hydraulic actuators, at least one electric motor for operating the feed system for the hydraulic actuators, at least one further electric motor for driving the extruder screw of a plasticator device, a joint frequency convertor which actuates both of the electrical motors and a switching device circuited between the frequency converter and at least one of the electrical motors.

REFERENCES:
patent: 3655311 (1972-04-01), Porter
patent: 4830597 (1989-05-01), Steier et al.
patent: 4988273 (1991-01-01), Faig et al.
patent: 5123831 (1992-06-01), Enqvist et al.
patent: 5362222 (1994-11-01), Faig et al.
Dubbel-Taschenbuch for Maschinenbau, 18. Edition, pp. V23FF.

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