Patent ID: 9108345
Filing Date: 2015-08-18
Classification: B29B,B29C

Abstract:
1. An extruding device comprising: an extruder cylinder, a screw disposed in the extruder cylinder for rotation, said screw having one end with a central bore constructed as a blind hole and a thrust bearing end face, a rotary drive facing the one end of the screw and having a rotary force-transmitting element with a center bore, a thrust bearing arranged between the rotary drive and the one end of the screw and bearing against the thrust bearing end face, and a shaft passing through a central through-opening of the thrust bearing and having a first end with an exterior tooth pattern constructed for engagement with an interior tooth pattern of the rotary force-transmitting element to form a first spline connection, and a second end with an exterior tooth pattern constructed for engagement with an interior tooth pattern of the central bore of the screw to form a second spline connection, wherein the shaft maintains alignment between the central bore of the one end of the screw and the center bore of the rotary force-transmitting element and transmits a torque of the rotary force-transmitting element to the screw, wherein the shaft is constructed to be pulled out of the rotary drive in an axial direction through the center bore of the rotary force-transmitting element by a linear motion without rotation on a side of the rotary drive facing away from the one end of the screw wherein an entirety of the rotary force-transmitting element of the rotary drive is constructed so as not to protrude during operation into the thrust bearing.