Operating state monitoring method for injection molding machines

Abstract

A monitoring method capable of properly collectively managing the operating states and operation records of a group of injection molding machines. Monitor data sets delivered from the individual injection molding machines are cyclically detected by means of a processor of a monitor unit, and a plurality of sets of up-to-date monitor data for the individual injection molding machines are renewably loaded into a plurality of data tables. When the preset time of a timer associated with any one of the injection molding machines is up, or when the current injection frequency reaches a predetermined frequency, it is concluded that the monitor data output timing is reached, and whether the monitor data should be printed or displayed on a screen is further determined. In a print process or display process, the oldest data group, which includes the oldest monitor data set and the next oldest monitor data set or a combination of two these data sets and calculated monitor data variations associated therewith, is first printed or displayed, and similar data groups are successively printed or displayed by priority of oldness. When the print or display of the up-to-date data group, including the up-to-date monitor data set, is finished, a monitor data reload process is executed in order to update a plurality of monitor data sets to prepare for the next monitor data delivery.

Dependencies are inferred from the claim text.