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    • 7. 发明授权
    • SCHLIESSEINHEIT MIT DOPPELKURBELANTRIEB
    • 关闭与双曲柄驱动
    • EP1755858B1
    • 2008-02-27
    • EP05733262.9
    • 2005-04-21
    • KraussMaffei Technologies GmbH
    • WOHLRAB, Walter
    • B29C45/66
    • B29C45/66B29C45/83B29C2045/1792B29C2045/667
    • The invention relates to a locking unit for an injection moulding machine, comprising a fixed tensioning plate (1), a support plate (3) and a moving tensioning plate (2), arranged such as to be displaced between the fixed tensioning plate (1) and the support plate (3), whereby the moving tensioning plate (2) is supported against the support plate (3) by interposing an opening and locking mechanism (4), for back and forth movement and at least one tensioning means (6) is provided between the support plate (3) and the fixed tensioning plate (1), to permit the build up of a locking force between the fixed (1) and the moving (2) plates. According to the invention, the opening and locking mechanism is embodied as a crank drive (4), with at least one crank disc (9), driven in rotation by means of a drive (32) and connected to the support plate (3) by means of at least one crank arm (11') of a first type and to the moving plate (2), by means of at least one crank arm (11') of a second type, whereby at least said second type or the first type of crank arm (11', 11') has an eccentric connection to the crank disc (9) with a rotary drive.