Material-processing screw machine

Details Material-processing screw machine Material-processing screw machine

B - Operations, Transporting

29

C

259/42.8

B29C 47/60 (2006.01) B29C 47/08 (2006.01) B29C 47/40 (2006.01) B30B 11/24 (2006.01)

Patent

CA 1249808

MATERIAL-PROCESSING SCREW MACHINE ABSTRACT OF THE DISCLOSURE The material-processing machine comprises at least a screw (11) driven in rotation inside a sleeve (1) and constituted by a central driving shaft (2) on which are mounted a plurality of screw elements (3) forming a stack of adjoining elements clamped between an abutment and clamping means placed respectively at the two ends of the shaft (2). The clamping means (4, 5) are arranged in such manner as to exert on the stack of screw elements (3) a pre- stressing force capable of opposing the separation of the screw elements (3) from each other in opera- tion of the machine. The invention is especially applicable to the construction of screw extruders.

475984

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