Patent ID: 6805479
Filing Date: 2004-10-19
Classification: B29C

Abstract:
An extrusion system comprisinga screw type extruder having at least one screw with a longitudinal axis, said screw being rotatable about said axis to extrude material in a feed direction, a gearing drive-connected to said screw via a coupling which can be coupled to and decoupled from said screw, a motor for driving said gearing, a gearing carriage on which said gearing is mounted, said gearing carriage being movable so that the gearing with the coupling can moved away from the screw so that the screw can be withdrawn from the extruder counter to the feed direction of the screw, and a screw changing device which receives said screw from said extruder and carries another screw for replacing said screw received from said extruder.