Automatic knife adjustment Pelletizer with automatic knife adjustment

摘要

A plastic resin pelletizer system and method for controlling the position of a pellet cutting blade on a die plate surface includes a vibration sensing pickup means in the form of a piezoelectric accelerometer mounted on a pelletizer die plate. The characteristic frequency or signal output is identified as indicating the contact state between the blade and the back face, and the magnitude of the characteristic signal is used to indicate the degree of contact pressure in position control of the knife relative to the die plate.