Belt meandering preventive device of used paper recycling apparatus, paper making device, and used paper recycling apparatus

Abstract

In a used paper recycling apparatus of furniture size that can be installed in a small shop or room, this is a belt meandering preventive device of a simple structure for executing the paper making process for manufacturing used paper pulp at low trouble rate and high reliability. A rolling roller rolls on a mesh belt of a paper making net conveyor unit for processing and conveying used paper pulp while applying a tension a, roller oscillating unit oscillates this rolling roller in a direction intersecting with the running direction of the mesh belt, and the rolling roller is maintained at the neutral position so as to be perpendicular to the running direction of the mesh belt when the running position of the mesh belt is in an appropriate running range, and the rolling roller is directed to a meandering correcting direction for moving the running position of the mesh belt into the appropriate running range when the running position of the mesh belt is out of the appropriate running range.

1 . A belt meandering preventive device of a used paper recycling apparatus, being a belt meandering preventive device for preventing meandering of running belts of a paper making unit for manufacturing recycled paper from used paper pulp manufactured in a pulp making unit of a preceding process, in a used paper recycling apparatus of furniture size to be installed at the site of origin of the used paper, comprising:
 a rolling roller rolling on the running belt of the belt conveyor unit for processing and conveying the used paper pulp sent from the pulp making unit, while applying a tension,   roller oscillating means for oscillating this rolling roller in a direction intersecting with the running direction of the running belt, and   control means for controlling this roller oscillating means according to the running state of the running belt,   wherein this control means controls the roller oscillating means so that the rolling roller may maintain the neutral position so as to be perpendicular to the running direction of the running belt when the running position of the running belt is in an appropriate running range, and so that the rolling roller may be directed to a meandering correcting direction for moving the running position of the running belt into the appropriate running range when the running position of the running belt is out of the appropriate running range.   
     
     
         2 . The belt meandering preventive device of the used paper recycling apparatus of  claim 1 ,
 wherein the rolling position of the rolling roller on the running belt is set at a location not interfering with the processing function of the processing and conveying location of the running belt.   
     
     
         3 . The belt meandering preventive device of the used paper recycling apparatus of  claim 1 ,
 wherein the rolling roller has its both ends of the rotation support shaft supported on a support bracket, and the support bracket is oscillatably pivoted on the fixed side support part by way of a support shaft provided at the central position in the longitudinal direction.   
     
     
         4 . The belt meandering preventive device of the used paper recycling apparatus of  claim 3 ,
 wherein the support bracket is pivoted on the fixed side support part so as to support the rolling roller in a horizontal state and to oscillate in a horizontal direction.   
     
     
         5 . The belt meandering preventive device of the used paper recycling apparatus of  claim 3 ,
 wherein the roller oscillating means includes cam means provided at one end of the support bracket for supporting the rolling roller rotatably, and a drive source for driving this cam means by cam action, and   by the cam action of the cam means by the drive source, the support bracket is oscillated.   
     
     
         6 . The belt meandering preventive device of the used paper recycling apparatus of  claim 5 ,
 wherein the cam means includes a drive cam formed as a disk-like eccentric cam rotated and operated by the drive source, and a driven cam formed at one end of the support bracket and made in a form of engaging groove to slidably contact and engage with the drive cam, and by the rotating motion of the drive cam, the support bracket oscillates by way of the driven cam to slidably contact and engage with the drive cam.   
     
     
         7 . The belt meandering preventive device of the used paper recycling apparatus of  claim 3 ,
 wherein the roller oscillating means is formed as an oscillating cylinder having a piston rod pivoted and coupled to one end of the support bracket for rotatably supporting the rolling roller, and   by the protruding and retreating motion of the piston rod of the oscillating cylinder, the support bracket is designed to oscillate.   
     
     
         8 . The belt meandering preventive device of the used paper recycling apparatus of  claim 1 , further comprising:
 belt detecting means for detecting whether or not the running belt is running in an appropriate running range,   wherein the control means is designed to control according to the detection result of the belt detecting means so as to hold the rolling roller at a neutral position perpendicular to the running direction of the running belt in the case the running position of the running belt staying within an appropriate running range, to control the roller oscillating means so that the rolling roller may be at a meandering correcting position for moving the running belt into the appropriate running range in the case the running position of the running belt staying out of the appropriate running range.   
     
     
         9 . The belt meandering preventive device of the used paper recycling apparatus of  claim 8 ,
 wherein the meandering correcting action of the roller oscillating means by the roller oscillating means is configured to move the rolling roller to move gradually from the neutral position to the maximum meandering correcting direction position when the running position of the running belt is out of the appropriate running range, and to move the rolling roller to the neutral position to stop when the running position of the running belt is corrected of meandering to return to the appropriate running range.   
     
     
         10 . The belt meandering preventive device of the used paper recycling apparatus of  claim 8 ,
 wherein the meandering correcting action of the roller oscillating means by the roller oscillating means is configured to move the rolling roller to move instantly from the neutral position to the maximum meandering correcting direction position and stop when the running position of the running belt is out of the appropriate running range, and to move the rolling roller to the neutral position to stop when the running position of the running belt is corrected of meandering to return to the appropriate running range.   
     
     
         11 . The belt meandering preventive device of the used paper recycling apparatus of  claim 1 ,
 wherein the running belt of the belt conveyor unit is a mesh belt of a paper making net conveyor unit for manufacturing wet paper from the slurry-like pulp suspension mixed of water and used paper pulp.   
     
     
         12 . The belt meandering preventive device of the used paper recycling apparatus of  claim 1 ,
 wherein the running belt of the belt conveyor unit is a smooth surface belt of a drying belt conveyor unit for manufacturing recycled paper by drying the wet paper manufactured in the paper making net conveyor unit in a preceding process.   
     
     
         13 . A paper making device of a used paper recycling apparatus, being a paper making device, applied in a used paper recycling apparatus of furniture size to be installed at the site of origin of used paper, for manufacturing recycled paper from used paper pulp manufactured in a pulp making unit of a preceding process, comprising:
 a paper making net conveyor unit for manufacturing wet paper from a slurry-like pulp suspension mixed of water and used paper pulp sent from the pulp making unit,   a drying belt conveyor unit for manufacturing recycled paper by drying the wet paper manufactured in this paper making net conveyor unit, and   a dewatering roll unit for squeezing and dewatering the wet paper at a linkage part of the paper making net conveyor unit and the drying belt conveyor unit,   wherein the paper making net conveyor unit and the drying belt conveyor unit individually have running belts for processing and conveying the used paper pulp manufactured in the pulp making unit, and also have belt meandering preventive means for preventing meandering of these running belts,   this belt meandering preventive means has a rolling roller rolling on the running belt of the belt conveyor unit for processing and conveying the used paper pulp sent from the pulp making unit, while applying a tension, roller oscillating means for oscillating this rolling roller in a direction intersecting with the running direction of the running belt, and control means for controlling this roller oscillating means according to the running state of the running belt, and   this control means controls the roller oscillating means so that the rolling roller may maintain the neutral position so as to be perpendicular to the running direction of the running belt when the running position of the running belt is in an appropriate running range, and so that the rolling roller may be directed to a meandering correcting direction for moving the running position of the running belt into the appropriate running range when the running position of the running belt is out of the appropriate running range.   
     
     
         14 . A used paper recycling apparatus comprising, in an apparatus case of furniture size, a pulp making unit for manufacturing used paper pulp by macerating and beating used paper, a paper making unit for manufacturing recycled paper by making from the used paper pulp manufactured in this pulp making unit, and a control unit for driving and controlling the pulp making unit and the paper making unit in cooperation,
 wherein the paper making unit includes a paper making net conveyor unit for manufacturing wet paper from a slurry-like pulp suspension mixed of water and used paper pulp sent from the pulp making unit, a drying belt conveyor unit for manufacturing recycled paper by drying the wet paper manufactured in this paper making net conveyor unit, and a dewatering roll unit for squeezing and dewatering the wet paper at a linkage part of the paper making net conveyor unit and the drying belt conveyor unit,   the paper making net conveyor unit and the drying belt conveyor unit individually have running belts for processing and conveying the used paper pulp manufactured in the pulp making unit, and also have belt meandering preventive means for preventing meandering of these running belts,   this belt meandering preventive means has a rolling roller rolling on the running belt of the belt conveyor unit for processing and conveying the used paper pulp sent from the pulp making unit, while applying a tension, roller oscillating means for oscillating this rolling roller in a direction intersecting with the running direction of the running belt, and control means for controlling this roller oscillating means according to the running state of the running belt, and   this control means controls the roller oscillating means so that the rolling roller may maintain the neutral position so as to be perpendicular to the running direction of the running belt when the running position of the running belt is in an appropriate running range, and so that the rolling roller may be directed to a meandering correcting direction for moving the running position of the running belt into the appropriate running range when the running position of the running belt is out of the appropriate running range.