Patent ID: 6106426
Filing Date: 2000-08-22
Classification: B29C,F16H,Y10T

Abstract:
A transmission for a two-shaft extruder, comprising a speed-reduction gear and a distribution gear, said distribution gear having one take-off shaft driven directly by said speed-reduction gear and having another take-off shaft driven by said one take-off shaft; two distributor shafts on opposite circumferential sides of said another take-off shaft; said speed-reduction gear being a planetary gear having a sun wheel; a main motor for driving said sun wheel, said planetary gear having a ring; a superimposition motor for driving said ring; said planetary gear having a planetary bearing coupled to said one take-off shaft; said main motor operating at a constant speed and being designed to handle most of the total power demand; said superimposition motor being regulable or discontinuously variable in speed and being designed to handle a fraction of the total power demand.