PLASTIC STRAND GRANULATOR HAVING AN ADJUSTING MECHANISM FOR ADJUSTING THE CUTTING GAP
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United States of America Patent
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Issued Date -
Apr 18, 2024
app pub date -
Oct 9, 2020
filing date -
Oct 15, 2019
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Abstract
In a plastic strand granulator the width of a cutting gap between a cutting rotor and a knife strip is gauged by an adjustment mechanism by setting the position of the knife strip. For this purpose the adjustment mechanism has an actuator with a differential thread having a reducing transmission ratio. The adjustment mechanism can advantageously be gauged automatically to a predetermined cutting gap width by a control circuit, wherein the adjustment mechanism is gauged in dependence on vibration parameters which are captured on the knife strip or on the cutting rotor. For this purpose, ultrasonic vibrations are introduced into the component in question and detected at some distance therefrom and evaluated.
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