| 摘要 |
<p>PURPOSE:To remove pulsation of a head and to enhance property accuracy of an extruded product by controlling to drive an extruder motor by a control wave formed by applying a correcting control wave obtained by deciding a maximum amplitude of a reverse waveshape to a reference wave. CONSTITUTION:The method for controlling a pulsation suppression of an extruding step comprises the steps of inputting a measured wave of a width of a tire constituting member 2 from an width measuring instrument 27 to central value control means 31, inputting it to a filter 32, controlling to feed back by the means 31, so controlling a conveyor motor 25 that a deviation of a target value of the width of the member 2 from an actually measured width becomes zero, and removing a variable wave of maximum width to converge the width to the vicinity of the target value. However, a pulsation of the width due to a pressure change of the head upon rotation of a screw cannot be removed only by the central value control but retained. On the other hand, the method further comprises the steps of removing the variable wave of the maximum width from a width measured wave input to the filter 32 to extract only a pulsated wave of a small wave element, and inputting the extracted pulsated wave to pulsating amount detecting means 33.</p> |
