Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Yoshimitsu Tanaka

Hiroshi Ueda

Shin Hotani

Shoji Yasuda

Yutaka Narukawa

Kimio Inoue

Katsunori Takahashi

Yoshinori Kuroda

Masahiko Kashiwa

Tsugushi Fukui

Kazuyoshi Imuta

Hirofumi Kimura

Ryota Minato

A kneading screw is disclosed which comprises a screw body, the screw body comprising a feed section and a kneading section, the feed section comprising screw segments for feeding a to-be-kneaded material to a downstream side and the kneading section comprising kneading segments for kneading the material. The screw body is provided within the kneading section with a multi-stage portion which gradually changes axially in rotating outside diameter. It is preferable that the multi-stage portion be constituted by kneading segments of plural kneading discs different in rotating outside diameter. With such a construction, it is possible to avoid stress concentration on an axial part of the kneading screw and thereby prevent breaking of a spline shaft and abnormal wear of kneading flights.

Kneading screw and extruder

A continuous mixer in which a pair of left and right rotors,are rotatably inserted into a chamber,having a feed port,and a discharge port,for materials at both axial ends, respectively, a gate device,for adjusting the polymer flow resistance of the materials is provided halfway in the axial direction of the chamber,, and a first and a second mixing portions,are formed at portions, respectively, of the rotors,positioned upstream and downstream of the gate device,, wherein a forced feed means,for forcibly post-adding the materials is connected to a portion downstream of the gate device,in the chamber,and upstream of the discharge port

Continuous mixer

A continuous mixer in which the rotors used to mix the material are composed of a rotor shaft, and a plurality of rotor segments fitted onto said rotor shaft. The plurality of rotor segments can be removed from the shaft and replaced by rotor segments of differing specifications to produce a rotor of a different shape and specifications in accordance with any change in the kind of mixing conditions required.

Continuous mixer and rotor segment removal tool for the same

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Takasago, Japan

Yoshimitsu Tanaka