| 摘要 |
The invention relates to an ejector device for moulding machines such as injection moulding machines, diecasting machines or the like. The ejector device comprises an ejector tool (40) which is fixed to an ejector plate (30). The ejector plate (30) is displaced by a drive from a spindle nut (60) and a threaded spindle (54) in the direction of a mould mounting plate (10) for ejection of a moulded part from a mould. In order to provide as high a force as possible at the beginning of the ejection process, an additional mechanical drive with another spindle nut (50) and a corresponding threaded section (52) is provided. The thread pitch of the threaded section (52) is lower than that of the threaded section (54). The second spindle nut (50) can be rotated counter to the mould mounting plate but is secured against axial displacement. If the second threaded nut is rotated, it displaces the threaded spindle and thereby the ejector plate in the direction of the mould mounting plate with a relatively large amount of force |
