DISCHARGE AMOUNT MEASURING APPARATUS AND DISCHARGE AMOUNT CONTROLLER FOR EXTRUSION MOLDING MACHINE

摘要

PROBLEM TO BE SOLVED: To accurately and quickly measure a discharge amount from an extrusion molding machine. SOLUTION: A measuring unit 33 measures a weight of a hopper for supplying material to the extrusion molding machine and outputs it to a measuring control unit 35. A rotational speed measuring unit 37 outputs a rotational speed of a main screw of the machine to the unit 35. The unit 35 calculates an upper limiter of a weight variation of the hopper from a reference rotational speed of the screw, a reference weight variation, and a real rotational speed of the screw, and calculates a discharge amount by using the limiter of the weight variation at the time of that measuring when the weight variation at the time of measuring exceeds the upper limiter.