J. M. Voith Gmbh

Voith Turbo Gmbh Co. Kg

Gunther Nagel

Franz Arbogast

Peter Peiz

Gerhard Fahnle

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.

Plastic injection molding electrohydraulic machine hybrid drive with

A hydrostatic displacement machine has in a revolving cylinder block several displacement elements movable in a guideway and having a radial position during the rotation of the cylinder block determined by a nonrotating displacement ring. The displacement elements, viewed axially, are retained on the displacement ring by two retaining rings. The retaining rings feature relative to the displacement ring a radial seal. The axial seal of the retaining rings is effected in standstill, relative to the housing or housing lid, by way of spring elements, and during the pumping operation, by a contact force which is indirectly dependent on the operating pressure.

Muffled hydrostatic displacement machine with radial seal

A hydrostatic displacement engine having pistons which slide on the inside of a stroke ring. The eccentricity of the stroke ring, relative to the cylinder block, is variable. The interior of the housing is divided in two areas which are separated from each other preferably by a seal, namely in the area located radially outside the stroke ring and the area located radially within the stroke ring. The inner and outer areas serve as a leakage oil collection space and connects through a leakage oil line with a pressureless liquid container. Emptying in the area situated radially outside the stroke ring is a connection line which is supplied by a pressure supply. A pressure valve maintains the pressure in the outer area at a value of several bars.

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Steinheim, Germany

Gunther Nagel