| 摘要 |
The invention relates to a hydraulic or pneumatic power unit and to its application in a press. A power unit (1) includes at least one elastomer space (4) for a compressive-force producing/transmitting elastomer (5), said space (4) being formed so as to provide said space (4) with at least one constriction point between pressurizing side and compressing side, and that said elastomer space (4) is filled with elastomer (5) by casting elastomer in situ. Elastomer space (4) is preferably in direct communication with a pressurizing space (2) for a hydraulic fluid (7), said pressurizing space (2) being connected to a pressurizing unit (20). In order to operate the power unit in a die press, particularly for producing wide-bodied compressed articles, said press including at least two body sections (10a) and at least two mould surfaces (8a) to be pressed against each other, the pressing of a compressed article being effected in a mould cavity (9) therebetween, said power unit (1) is adapted to carry at least one mould surface (8a) relative to its body section (10a) towards the other mould surface (8b) through the intermediary of a support layer (13a), said support layer (13a) being located within the region between mould surface (8a) and elastomer space (4) and/or press plate (3). |
