METHOD OF MONITORING POSITION OF RESIN IN CAVITY OF METALLIC MOLD.

摘要

A method of monitoring the position of resin in the cavity of the metallic mold so that automatic display and monitoring of the relation between a state of resin filled in the cavity and the position of a screw may be enabled, in which sectioning boundaries where flow resistance of resin varies as resin is poured into the cavity are specified. Then, values of the volume of zones sectioned by said boundaries are individually obtained and set in the control device of the injection molding machine. The control device, when a cushion amount Lc is inputted thereto, displays an injection-completion position (200, 201). An amount of screw stroke Sj is obtained from a volume set for each position where flow resistance varies and the screw diameter. A cushion amount Lc and a screw stroke amount Sj are added up to obtain a screw position which is displayed as a changeover position for injection speed (203).