Abstract: 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.

Abstract: A hydraulic system includes at least two consumers, e.g., a closing unit and an injection unit of an injection molding machine. At least two displacement pumps are provided to produce a fluid flow under pressure to the consumers, whereby at least one control valve is provided for each of the consumers. At least one further valve is provided to control a fluid communication between the output sides of the displacement pumps, wherein at least one of the consumers is supplied with pressure from the outlet of the displacement pumps separately or together in groups.

Abstract: A machine for making formed articles of plastic or rubber, such as an injection molding machine, extruder or blow molding machine, includes a machine control, and a plurality of electric components which are operatively connected through wireless communication to the machine control. The machine control as well as the electric components have each devices for transmitting and receiving electromagnetic waves.

Abstract: A hydraulic system includes at least two consumers, e.g., a closing unit and an injection unit of an injection molding machine. At least two displacement pumps are provided to produce a fluid flow under pressure to the consumers, whereby at least one control valve is provided for each of the consumers. At least one further valve is provided to control a fluid communication between the output sides of the displacement pumps, wherein at least one of the consumers is supplied with pressure from the outlet of the displacement pumps separately or together in groups.