METHOD FOR MONITORING INJECTION CHARACTERISTIC

摘要

PURPOSE:To make possible the monitoring of a short-period operation and to improve workability and quality by changing the stoke of an injection cylinder or the unit interval of time axis according to a change in the process speed in one injection cycle and monitoring the injection characteristic. CONSTITUTION:A monitor device 24 monitors the valve opening degree V' corresponding to a speed change position S and the speed change rate of an injection speed V as well as the present stroke sp of a piston 2 and changes the unit interval of the sampling interval by the built-in clock function which is heretofore constant. The device 24 makes preliminary judgement from the information of a position setter 18 and an opening degree setter 19 and can increase the information on the injection characteristic by changing the sampling interval when the stroke sp of the piston 2 attains the stroke s1. The expansion of only the part of the short-period operation and the efficient monitoring are made possible even with the operation which is executed in the short period.