Mechanism for driving the worm screws of a double worm screw...

Details Mechanism for driving the worm screws of a double worm screw... Mechanism for driving the worm screws of a double worm screw...

B - Operations, Transporting

29

C

74/91

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

Patent

CA 1311141

ABSTRACT The two worm screws of a double worm screw extruder have drive shafts of different lengths. To drive one of the worm screws, a pinion (1) is keyed to the longer drive shaft (2), the pinion (1) being driven by a motor pinion (3). In order to drive the second worm screw there is provided, firstly, an additional shaft 6 which carries on one end a pinion (5) and on the other end a pinion (7), and, secondly, a pinion (10) mounted on the longer drive shaft (2). The pinion (5) is driven by the motor pinion (3), and the two pinions (7, 10) mesh with a pinion (8) which is keyed to the shorter drive shaft (11). A drive is created which can be kept small in view of the relatively small number of pinions, and moreover is easy to dismantle.

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