Sheet production apparatus and sheet production method of sheet production apparatus

Abstract

A sheet production apparatus includes a tank configured to store paper pieces, a motor, a blade provided in the tank and rotated by a force of the motor, a tube configured to take in the paper pieces transported outward by the rotation of the blade, a transport path configured to transport the paper pieces from the tube, a production mechanism configured to defibrate the transported paper pieces and produce a sheet, a measuring instrument configured to measure an amount of paper pieces from the tube, and a processor configured to correct a next operation of the tube based on the amount of paper pieces and correct an operation of the motor based on a moving average value of the amount of paper pieces.

What is claimed is: 
     
         1 . A sheet production apparatus comprising:
 a tank configured to store paper pieces;   a motor;   a blade provided in the tank and rotated by a force of the motor;   a tube configured to take in the paper pieces transported outward by the rotation of the blade;   a transport path configured to transport the paper pieces from the tube;   a production mechanism configured to defibrate the transported paper pieces and produce a sheet;   a measuring instrument configured to measure an amount of the paper pieces from the tube; and   a processor configured to correct a next operation of the tube based on the amount of the paper pieces and correct an operation of the motor based on a moving average value of the amount of the paper pieces so as to reduce a difference between the amount of the paper pieces measured by the measuring instrument and a target value.   
     
     
         2 . The sheet production apparatus according to  claim 1 , wherein
 the tube includes a first tube and a second tube, and   the processor   corrects a next operation of the first tube based on an amount of the paper pieces from the first tube,   corrects a next operation of the second tube based on an amount of the paper pieces from the second tube, and   corrects the operation of the motor based on a moving average value of the amount of the paper pieces from the first tube and the amount of the paper pieces from the second tube.   
     
     
         3 . The sheet production apparatus according to  claim 1 , wherein
 the processor resets correction-related information in accordance with an error during correction.   
     
     
         4 . The sheet production apparatus according to  claim 1 , wherein
 the processor resets correction-related information in accordance with an occurrence of a service engineer error.   
     
     
         5 . The sheet production apparatus according to  claim 1 , wherein
 the processor resets correction-related information in accordance with an error during correction when a situation in which the difference between the amount of the paper pieces and the target value exceeds a predetermined range occurs consecutively for a predetermined number of times.   
     
     
         6 . The sheet production apparatus according to  claim 1 , wherein
 the processor uses proportional integral control or proportional control during correction.   
     
     
         7 . A sheet production method of a sheet production apparatus including
 a tank configured to store paper pieces,   a motor,   a blade provided in the tank and rotated by a force of the motor,   a tube configured to take in the paper pieces transported outward by the rotation of the blade,   a transport path configured to transport the paper pieces from the tube,   a production mechanism configured to defibrate the transported paper pieces and produce a sheet, and   a measuring instrument configured to measure an amount of the paper pieces from the tube, the method comprising:   correcting a next operation of the tube based on the amount of the paper pieces and correcting an operation of the motor based on a moving average value of the amount of the paper pieces so as to reduce a difference between the amount of the paper pieces measured by the measuring instrument and a target value.