Nissei Plastic Industrial Co., Ltd.

Masaki Miyazaki

Toshimi Kato

Takashi Hakoda

Haruo Okada

Hiroo Kudo

In monitoring anomalies in a measurement process comprising a main measurement process Sa which performs a measurement by forward rotating a screwhaving a back-flow prevention valveinstalled on the tip and a post-measurement process which performs a post-measurement process Sb for closing said back-flow prevention valveafter this main measurement process Sa ends, after said post-measurement process Sb ends, an injection process Si wherein said screwis put in a freely-rotatable state and moved forward is performed, the amount of rotation Rd of said screwsince the start of this injection process Si is detected, and if the detected amount of rotation Rd exceeds at least a preset amount Rs, an anomaly processing (S) is performed.

Anomaly monitoring method of an injection molding machine

A measurement method including a main measurement process Sa in which measurement is performed by rotating a screw in the forward direction with a back-flow prevention valve installed on its tip and a post-measurement process Sb which is performed by rotating the screw in a reverse direction after the main measurement process Sa is finished, the post-measurement process Sb being performed after completing the main measurement process Sa, in which the screw is moved forward in a free rotational state, the rotational state of the screw during the forward movement being monitored, and if the rotation of screw comes to a halt, the screw is rotated in a reverse direction by a specified amount of rotation.

Growing community of inventors

Nagano-ken, Japan

Masaki Miyazaki