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    • 1. 发明公开
    • SCHLIESSEINHEIT FÜR EINE SPRITZGIESSMASCHINE
    • SCHLIESSEINHEITFÜREINE SPRITZGIESSMASCHINE
    • EP0833737A1
    • 1998-04-08
    • EP96921960.0
    • 1996-06-10
    • PAUL WURTH S.A.
    • MAILLIET, PierreLANFERMANN, Bernd
    • B29C45
    • B29C45/6728B29C2045/6735
    • A closing unit for an injection moulding machine has a movable closing die (20) and a fixed matching die (14), as well as several hydraulic cylinders (26) mounted on the fixed matching die (14) to generate the closing force. The closing die (20) has a drawbar (22) for each hydraulic cylinder (26). The piston (28) of each hydraulic cylinder (26) is mechanically linked to a rotary locking bushing (34). The drawbars (22) extend through hydraulic cylinders (26) and locking bushings (34). A servo-drive (70) allows the locking bushings (34) to swivel up to a first and second angular position. First locking means (38) located along a section of the drawbars (22) co-operate with second locking means (36) in the locking bushings (34) so that in the first angular position the drawbars (22) may be axially pushed through the hydraulic cylinders (26) and the locking bushings (34), and in the second angular position the closing force may be transmitted from the hydraulic cylinders (26) to the closing die (20).
    • 一种用于注塑机的闭合单元具有可移动闭模模具(20)和固定匹配模具(14)以及安装在固定匹配模具(14)上以产生闭合力的多个液压缸(26)。 闭模(20)具有用于每个液压缸(26)的牵引杆(22)。 每个液压缸(26)的活塞(28)机械连接到旋转锁定衬套(34​​)。 牵引杆(22)延伸穿过液压缸(26)和锁定衬套(34​​)。 伺服驱动器(70)允许锁定衬套(34​​)旋转到第一和第二角度位置。 沿着拉杆22的一部分定位的第一锁定装置38与锁定衬套34中的第二锁定装置36配合,从而在第一角位置中,拉杆22可以被轴向地推动穿过 液压缸(26)和锁定衬套(34​​)之间,并且在第二角度位置中,闭合力可以从液压缸(26)传递到闭合模具(20)。