Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Koji Minagawa

Shigehiro Kasai

Koichi Honke

Masashi Konno

Yoshio Ikegami

Tatsuo Yagi

Tatsuya Uemura

Norifumi Fukano

Tomonori Nakashita

It is intended to provide a kneading extruder which makes it possible to prevent breakage due to resonance regardless of the rotating speed of kneading screws. The kneading extruder comprises a driving motor, kneading screws for kneading a material, each of the kneading screws having a screw shaft, a motive power transmitting path including a first speed regulator for varying a rotating speed produced by motive power output from the driving motor, the motive power transmitting path serving to transmit the motive power which produces a rotating speed varied by the first speed regulator to the screw shafts of the kneading screws, and a resonance suppressor for suppressing torsional resonance of the kneading screws caused by fluctuations in load exerted on the kneading screws, the resonance suppressor serving to reduce a resonance response factor which is the ratio of an output amplitude of the kneading screw amplified by resonance response to an input amplitude of the kneading screw caused by the fluctuations in load to suppress the torsional resonance.

Kneading extruder having a speed regulator and resonance suppressor

Drive transmission mechanism for biaxial extruder

Growing community of inventors

Takasago, Japan

Koji Minagawa