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AssigneeDemag Ergotech GmbH
InventorsMATTHIAS KANTER, KERSTIN HENKE
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A clamping unit for an injection molding machine includes a drive mechanism for moving a moving platen of the injection molding machine in at least one direction. The clamping unit has a clamping cylinder for movably receiving a clamping piston which defines a piston chamber in the clamping cylinder, and a compensating cylinder for movably receiving a compensating piston which defines a compensating chamber in the compensating cylinder. The piston chamber of the clamping cylinder and the compensating chamber of the compensating cylinder are fluidly connectable by a direct, controllable connection so that fluid can shuttle back and forth between the clamping and compensating chambers during opening and closing of the clamping unit.
A clamping unit for an injection molding machine, comprising:
A method of operating a clamping unit of an injection molding machine having a moving platen, comprising the step of directly fluidly connecting a piston chamber of a clamping cylinder of the clamping unit with a compensating chamber of a compensating cylinder of the clamping unit to allow fluid displaced from one of the piston chamber and the compensating chamber to substantially flow to the other one of the piston chamber and the compensating chamber, when the moving platen is moved.
Dependencies are inferred from the claim text.