Engel Maschinenbau Gesellschaft M.b.h.

Herbert Gruber

Johann Voggeneder

Helmut Naderhirn

Manfred Kapfer

An injection moulding machine with a vertically movable mould-clamping plate, an electrical drive motor for the movable mould-clamping plate. A control unit for the drive motor, a machine control unit and a safety device to prevent unintentional movement of the movable mould-clamping plate are also provided. The machine control unit activates the retaining device when a movement of the movable mould-clamping plate is indicated without a corresponding drive signal.

Machine for processing synthetic materials

An injection assembly for an injection moulding machine, comprising a screw ( ) mounted in a plasticising cylinder and an injection piston ( ) which moves the screw ( ) in the longitudinal direction and which is mounted in an injection cylinder, wherein there is provided a supply conduit for the injection cylinder having a control valve ( ) which can be shut off and there is provided an additional conduit ( ) which by-passes the control valve ( ) and in which are arranged a device ( ) for reducing the amount of the pressure fluid flowing to the injection cylinder ( ) and possibly a device ( ) for reducing the pressure.

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Pregarten, Austria

Herbert Gruber