Mixedness regulating device of twin screw extruder

Application Number: 00107079
Application Date: 2000.04.28
Publication Number: 1271645
Publication Date: 2000.11.01
Priority Information: 1999/4/28 JP 121059/99
International: B29C47/40
Applicant(s) Name: The Japan Steel Works, Ltd.
Inventor(s) Name: Watada Satoru;Naito Katsuyuki
Patent Agency Code: 72001
Patent Agent: yang yong
Abstract A cylinder is formed with an upper guide bore and a lower guide bore at a position corresponding to a gate part. Gate rods are rotatably inserted through the guide bores, respectively. Each of the gate rods is formed with opening degree changing recesses in a form of an opencut adjacent to each other in an axial direction in order to constitute opening degree variable channels in combination with opening degree variable channel forming parts of two screws. Each of the recesses consists of a first semicircular face and a second semicircular face in such a shape that an upstream side end of the first semicircular face is diagonally cut. By rotating the gate rods in a positive direction and a reverse direction, the opening degree can be changed between a fully opened state and a fully closed position.