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    • 6. 发明公开
    • SCHLIESSEINHEIT
    • EP2632684A1
    • 2013-09-04
    • EP11784960.4
    • 2011-10-26
    • KraussMaffei Technologies GmbH
    • HÖRNLA, Robert
    • B29C45/67B29C45/17
    • B29C45/6728B29C45/1748
    • There is described a closing unit for an injection-moulding machine having a stationary platen (1) and a movable platen (2), having columns (3) between the platens (1, 2), and having locking elements (7a, 7b) which can be inserted into and extracted from the columns (3). One end of the columns projects into closing-force cylinders (8) and is in the form of a piston (9) therein. At least the closing-force side of the piston, and preferably both sides of the piston (9), can be acted on by a pressure medium. In order to improve the positional accuracy between the column and the locking elements, it is provided according to the invention that the pistons (9) are each provided with a spindle/nut combination (14, 15), wherein either the nut (14) is connected in a rotationally fixed manner to the piston (9) and the spindle (15) is set in rotation by a movement of the column (3), or the spindle (15) is connected in a rotationally fixed manner to the piston (9) and the nut (14) is set in rotation by a movement of the column (3), and wherein a blocking device (18, 19), by way of which the rotation of the rotating part of the respective spindle/nut combination can be blocked, is provided.
    • 描述了一种具有固定压板(1)和可动压板(2)的注塑机的闭合单元,在压板(1,2)之间具有柱(3)并具有锁定元件(7a,7b) 其可以插入和从柱(3)中提取。 柱的一端突出到闭合力缸(8)中,并且其中具有活塞(9)的形式。 至少活塞的关闭力侧,并且优选地,活塞(9)的两侧可以由压力介质作用。 为了提高柱和锁定元件之间的位置精度,根据本发明,提供活塞(9)各自设置有主轴/螺母组合(14,15),其中螺母(14) 以旋转固定的方式连接到活塞(9),并且主轴(15)通过柱(3)的移动而旋转,或者主轴(15)以旋转固定的方式连接到活塞( 9),并且螺母(14)通过柱(3)的移动而旋转,并且其中阻挡装置(18,19)通过其移动相应主轴/螺母组合的旋转部分的旋转 可以被阻止,被提供。