Product quality determining methods for die cast machines

摘要

In a product quality determining method for dies cast machines, injection and casting conditions such as injection speeds, speed change- over positions, high speed interval, pressure raising time, casting pressure, and die clamping force by means of measuring means for each shot in actual casting process of the dies cast machine automatically measured. A measured value relating to the injection and casting condition of a shot as a reference value for determining a product quality when a good product button is operated by operators is set. A product quality determining range by determining upper limit value and a lower limit value of a predetermined allowable width with respect to the reference value is set. Whether or not the measured value of the injection and casting condition is within the product quality determining range by means of an arithmetic operation means is determined.