Electro-hydraulic press drive, has cylinder with pressure chamber, where chamber is subjected with high pressure for compensation of weight force of mass of press unit and is decompressed for applying pressure force

摘要

The drive has a movement device (8) for the movement of a press unit (6), and a hydraulic compensation device for the partial compensation of weight force of the mass of the press unit. The compensation device has a cylinder that includes a pressure chamber, which is active in compensation direction. The chamber is subjected with high pressure for compensation of the force and is decompressed for applying pressure force.