| 摘要 |
Hydraulic pressing device comprises a hydraulic pump, a moving part (4), a fixed part (9), and a non-return valve (6) acting as an over pressure valve. The moving part runs from a starting position into a pressing position, the non-return valve moves automatically into an open position depending on a prescribed pressing pressure and the moving part moves back under the action of a restoring spring (5). Preferred Features: The non-return valve has a locking arrangement (10) in which a protrusion (12) interacts. The protrusion stays in its locking position under the spring tension. |
