| 摘要 |
A machine for processing plastics materials having a screw mounted in a housing (6) and made up of a plurality of screw members (13 to 16) in the form of collars on a drive shaft (11), whereby screw members to suit a particular material treatment are secured against rotation on the drive shaft (11) and can be exchanged when required for other screw members, the machine including a thrust arrangement to press the screw members (11) axially into close engagement with one another, the thrust arrangement comprising a divided thrust ring (25) axially supported on the drive shaft (11 )at least at one of the end zones thereof, thrust or draw bolts (3) which act on the adjacent end surface of the adjacent outermost one of the screw members (13) or on a frontal surface of a guide ring bearing against the outermost one of the screw members (13), and a sleeve (27) closely surrounding the periphery of the divided thrust ring. <IMAGE>
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