Screw extruder for processing rubber or plastics material

Details Screw extruder for processing rubber or plastics material Screw extruder for processing rubber or plastics material

B - Operations, Transporting

29

B

18/731

B29B 7/48 (2006.01) B29C 47/42 (2006.01) B29C 47/64 (2006.01)

Patent

CA 1092315

INVENTION OF Horst Spielhoff TITLE OF THE INVENTION "Screw extruder for processing rubber or plastics material" ABSTRACT OF THE DISCLOSURE A screw extruder for processing rubber of plastics material, comprising a cylinder jacket with a feed hopper, a central geared shaft and geared planet shafts disposed between the central shaft and the cylinder jacket and drivably engaged with the central shaft and the cylinder jacket, wherein parts of at least some of the planet shafts are bare of gearing. Advantageously each alternate planet shaft is only partly geared, the gearing extending for only approximately half the length of the shaft, at one end or the other end or in two quarter length portions at the opposite ends. Alternatively each third planet shaft is only partly geared. Preferably each geared part of a planet shaft which is only partly geared overlaps with a geared part of the planet shaft which follows it in the direction of rotation. - 1 -

302206

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