JP5645503B2 - Used paper processing device paper feeder - Google Patents

Description

  The present invention relates to a small waste paper processing apparatus that manufactures paper from recycled pulp obtained by separating waste paper, and relates to a paper feeding device that can stack waste paper.

A conventional general papermaking method includes a pulp process, a papermaking process, and a finishing process. When used paper is used as a raw material, a used paper pulp process is added.
In the pulp process, pulp is produced from wood chips, and in the used paper pulp process, used paper as a raw material is disaggregated with a pulper to obtain used paper pulp. In the paper making process, the product paper is processed through the wire part, press part, dryer part, calendar part, and coater part of the paper machine. In the finishing process, the micro unevenness of the paper coated with the coater part is smoothed, cut into product dimensions, or wound on a roll.

  When making recycled paper from waste paper, the paper is supplied to the pulper in the form of a sheet or in the form of a shredder paper piece. The pulper batch-processes a certain amount of waste paper in a single disaggregation operation. In addition, the disaggregation operation is repeated in a timely manner so that the waste paper pulp does not become insufficient in the paper making process.

  Patent Document 1 describes a hopper device with a shredding mechanism. This is used in a used paper recycling apparatus for shredded documents including a pulper that breaks up used paper to make a recycled pulp suspension and a paper machine that makes recycled paper from the recycled pulp suspension. A first slot for feeding uncut documents, a document shredding mechanism for shredding the shredded unprocessed documents into document shreds, and discharging the shredded documents And a discharge port for the purpose.

  Patent Document 2 describes a paper feeding device. This includes a paper storage unit that stores at least the same size paper, a detection unit that detects whether or not the paper is stored in the paper storage unit, and a paper that contacts the paper stored in the paper storage unit The paper feed mechanism includes a paper feed mechanism that feeds paper by rotating the feed and a biasing unit that biases the paper stored in the paper storage unit to the paper feed roller.

JP 2008-133559 A JP-A-9-272638

By the way, in the case of making recycled paper from used paper, a paper feeding device that supplies the used paper to the pulper feeds the used paper one by one from the used used paper bundle.
For this reason, if there is no used paper in the paper feeding device before the used paper supplied from the paper feeding device to the pulper reaches the supply target, it is necessary to temporarily stop the paper feeding operation and supply the used paper to the paper feeding device. When this situation occurs, the timing of the disaggregation operation performed by the pulper may be shifted, and the waste paper pulp is insufficient in the paper making process, and continuous processing in the waste paper processing apparatus is hindered.

  SUMMARY OF THE INVENTION The present invention solves the above-described problems, and provides a paper feeding device of a used paper processing apparatus that can always replenish used paper to the paper feeding device when the paper feeding device is not performing a paper feeding operation. Objective.

In order to solve the above problems, a paper feeding device of a used paper processing apparatus according to the present invention includes a pulper device that disaggregates used paper, a paper material storage device that stores shredded pieces of used paper to be supplied to the pulper device, and a paper material storage device. In a used paper processing apparatus provided with a shredder device for supplying shredded paper pieces to a device, a paper feeding device for supplying waste paper to the shredder device, and a control device for controlling each device, the paper feeding device stacks used paper A loading table drive unit that raises and lowers the loading table over a lower limit standby position where waste paper can be stacked and an upper limit sheet feeding position where waste paper can be fed; A separation supply unit that separates and supplies the used paper on the loading table one by one, and the control device determines whether or not the used paper is loaded when a paper feeding device other than paper feeding is not performing the paper feeding operation. always placing table waiting is in the standby position without It characterized by having a that standby control function unit.

  In the paper feeding device of the used paper processing apparatus of the present invention, the paper material storage device has a paper amount detection unit that detects the amount of stored shredded paper pieces, and the control device detects the paper material that is detected by the paper amount detection unit. When the amount of paper in the storage device falls below the lower limit set amount, an alarm is issued and the mounting table drive unit is controlled to raise the mounting table to the paper feed position, and the separation supply unit is controlled to shredder device It has a paper feed control function unit for supplying used paper to the paper.

  In the paper feeding device of the used paper processing apparatus of the present invention, the control device receives a priority operation switch for instructing the lowering of the mounting table during operation of the paper feeding control function unit, and receives the input of the priority operation switch to drive the mounting table And a standby priority control function unit that controls the control unit to lower the mounting table at the paper feed position to the standby position.

  In the paper feeding device of the used paper processing apparatus of the present invention, the control device detects when the paper amount of the paper material storage device detected by the paper amount detection unit becomes smaller than the lower limit setting amount again during the operation of the standby priority control function unit. And a paper feed priority control function unit which issues a warning and controls the mounting table driving unit to raise the mounting table to a paper feeding position.

In the paper feed device of the used paper processing apparatus of the present invention, the paper feed control function unit and the paper feed priority control function unit raise the mounting table to a paper feed position after a set time has elapsed after the alarm is issued.
In the paper feeding device of the used paper processing apparatus of the present invention, the lower limit set amount of the paper amount in the paper material storage device is a paper amount corresponding to the unit amount of the batch processing operation in the pulper device.

The paper feeding device of the used paper processing apparatus of the present invention includes a pulper device that disaggregates used paper, a storage tank that stores recycled pulp prepared by the pulper device, a paper feeding device that supplies waste paper to the pulper device, In the used paper processing apparatus including a control device for controlling the apparatus, the paper feeding device includes a placing table on which the used paper is stacked, a lower limit standby position at which the used paper can be stacked, and a used paper feeding operation. the mounting table drive unit for lifting over the feed position of the upper side of the can has a single one by separating supply separating supply unit used paper in mounting table sheet feed position, the control device, when the sheet feeding It is characterized by having a standby control function unit that always puts the mounting table in the standby position regardless of whether or not the used paper is loaded when a paper feeding apparatus other than the paper feeding apparatus is not performing the paper feeding operation .

  In the paper feeding device of the used paper processing apparatus of the present invention, the paper feeding device has a supplied paper amount measuring unit that measures the amount of used paper supplied to the pulper device, and the control device regenerates pulp from the pulper device to the storage tank. A paper feed control function unit that issues a warning and controls the mounting table drive unit to raise the mounting table to a paper feeding position, and controls the separation supply unit to supply used paper to the pulper device. It is characterized by having.

  In the paper feeding device of the used paper processing apparatus of the present invention, the paper feeding control function unit raises the mounting table to a paper feeding position after a set time has elapsed after the alarm is issued.

  As described above, according to the present invention, it is possible to always supply used paper to the paper feeding device when the paper feeding device is not performing a paper feeding operation.

Sectional drawing which shows the paper feeder in embodiment of this invention The principal part enlarged view which shows the principal part of the paper feeder in the embodiment Schematic diagram showing the used paper processing apparatus in the same embodiment The block diagram which shows the control apparatus in the embodiment The schematic diagram which shows the used paper processing apparatus in other embodiment of this invention Sectional drawing which shows the paper feeder in the embodiment

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 4, the used paper processing apparatus according to the present invention is integrally provided with a recycled pulp unit 1, a deinking pulp unit 2, a paper making unit 3, a finishing unit 4, and a waste water processing unit 5, and recycled paper is used from used paper. It is prepared (regenerated) and has a control device 6 that controls the operation of the recycled pulp unit 1, the deinked pulp unit 2, the paper making unit 3, the finishing unit 4, and the wastewater treatment unit 5.

  The deinking pulp unit 2 separates foreign matter such as ink and toner from the fiber, and in the presence of a surfactant, stirring the recycled pulp-containing liquid containing foreign matter particles such as ink and toner, Fine bubbles are blown into the recycled pulp-containing liquid, and hydrophobic foreign particles are attached to the surface of the surfactant bubbles to float and separate to deink.

  The paper making section 3 is for making (regenerating) recycled paper by making deinked pulp, and uniformly ejecting the deinked pulp-containing liquid containing deinked pulp from the head box onto the mesh belt, draining the fiber Forming a layer.

The finishing unit 4 passes the paper made between a plurality of press rollers to increase the flatness of the paper and cut it into a predetermined sheet size.
The waste water treatment unit 5 treats the deinking waste liquid, removes fibers, ink, and toner through a filter, neutralizes by adding chemicals, and treats the water quality so that it can be drained to public sewage.

  As shown in FIGS. 1 to 4, the recycled pulp unit 1 includes a pulper device 110 that disaggregates used paper, a paper material storage device 120 that stores shredded pieces of waste paper to be supplied to the pulper device 110, and a paper material storage device. A shredder device 130 for supplying shredded paper pieces to 120 and a paper feeding device 140 for supplying waste sheets of paper to the shredder device 130 are provided.

  The pulper device 110 disaggregates recycled paper material of recycled raw materials into fibers, that is, recycled pulp, in a solvent such as clean water, white water, and the like. A rotating stirring blade (not shown) and driving means (not shown) such as a motor for rotating the stirring blade are provided. The tank body 111 communicates with a transfer system 112 for transferring the recycled pulp-containing liquid to the next process.

  In the pulper apparatus 110, an amount of a solvent corresponding to the amount of paper of the recycled material, here water, is charged into the tank body 111, and the agitating blade (not shown) is driven to dissociate the waste paper fibers to regenerate the recycled pulp. Prepared (regenerated), and recycled pulp-containing liquid containing recycled pulp is sent to the deinking pulp section 2 of the next step through the transfer system 112.

  The paper material storage device 120 stores waste paper shredded paper as the paper material 7 to be supplied to the pulper device 110. The paper material storage device 120 measures the input amount of the paper material 7 to be input to the pulper device 110, and the paper material. And a paper feeding unit 12 that supplies the metering unit 11 with the paper feeding unit 12.

  The paper supply unit 12 includes a paper material storage unit 16, a first duct 17 that transfers the paper material stored in the paper material storage unit 16 to the weighing unit 11, and the paper material 7 from the paper material storage unit 16 to the first. A feeding device 18 for feeding to the duct 17, a dispersion cyclone 19 for dispersing the paper material 7 sent from the paper material storage unit 16 to the first duct 17 by the feeding device 18, and a weighing unit for the paper material 7 in the first duct 17 11, a discharge cyclone 20 that discharges to the first duct 17, a blower 22 that generates an air flow 21 for flowing the paper material 7 that has been input from the paper material storage unit 16 into the first duct 17, and the discharge cyclone 20; It has the 2nd duct 23 connected between the air blowers 22, and the 3rd duct 24 connected between the discharge cyclone 20 and the air blowers 22.

  The paper material storage unit 16 includes a storage container 29 that stores the paper material 7 shredded by the shredder device 130, a stirring device 30 that stirs the paper material 7 stored in the storage container 29, and the shredded material stored. A paper amount detection unit 31 that detects the paper amount of a piece of paper is provided.

  The paper amount detection unit 31 includes an upper sensor 311 that detects an upper limit set amount and a lower sensor 312 that detects a lower limit set amount. The upper sensor 311 and the lower sensor 312 include photoelectric switches and the like, and are arranged on the inner surface of the storage container 29. It is provided opposite to each other. The lower limit set amount of the paper amount in the storage container 29 is a paper amount commensurate with the unit amount of the batch processing operation in the pulper device 110, and the upper limit set amount is a paper amount from which the paper material 7 does not overflow from the storage container 29.

The shredder device 130 includes a cutting unit 301 that shreds waste paper and a driving unit 302 that drives the cutting unit 301.
The paper feeding device 140 includes a mounting table 410 for stacking and stacking used paper sheets, a separation supply unit 420 for separating the used paper one by one from the mounting table 410, and the shredder device 130 along the paper feeding and conveying direction. A transporting device 430 for transporting, and a mounting table driving unit 440 for moving the mounting table 410 up and down between a lower limit side standby position where waste paper can be stacked and an upper limit side paper feeding position where used paper can be fed The stacking amount detection unit 450 detects the stacking amount of the used sheets of sheets stacked and mounted on the mounting table 410, and the stacking amount detection unit 450 is arranged at appropriate intervals along the movement path of the mounting table 410. It consists of a plurality of optical system sensors 451. The loading amount detection unit 450 can be configured to detect the amount of raising / lowering of the mounting table 410 with a potentiometer and estimate the amount of used paper stacked, or to store the difference between the replenishment amount and the consumption amount as data. is there.

  The separation supply unit 420 includes a paper feed roller 422 attached to a drive shaft 421 disposed above the back end of the mounting table 410, and a paper suction device 423 is provided facing the paper feed roller 422.

  The conveyance device 430 includes a pair of upper and lower conveyance rollers 431 and a supply paper amount measurement unit 432 that measures the amount of used paper supplied to the shredder device 130. The supply paper amount measurement unit 432 is an optical sensor or super A sonic sensor is used. The amount of paper feed can also be measured by counting the number of times the paper is fed by the paper feed roller 422.

  The control device 6 includes a CPU 61, an alarm unit 62, a display unit 63, and a priority operation switch 64, and has the following functional units as functional circuits set in the CPU 61. That is, the regenerated pulp unit control function unit 611 that controls the operation of the regenerated pulp unit 1, the deinking pulp unit control function unit 612 that controls the operation of the deinking pulp unit 2, and the paper making unit that controls the operation of the paper making unit 3. The control function unit 613, the finishing unit control function unit 614 that controls the operation of the finishing unit 4, the waste water treatment unit control function unit 615 that controls the operation of the waste water treatment unit 5, and the operation process from the start of operation to the stop of operation. An automatic operation control function unit 616 that sequentially executes is provided. The regenerated pulp unit control function unit 611 has a standby control function unit 617 that waits for the mounting table 410 at a standby position except during paper feeding as a sub-function unit, and a paper amount detection unit 31. When the paper amount of the paper material storage device 120 detected in step S1 is equal to or lower than the lower limit set amount, an alarm is issued to the alarm unit 62, and the mounting table driving unit 440 is controlled to raise the mounting table to the paper feeding position. With The feed control function unit 618 that controls the separation supply unit 420 to supply the used paper to the shredder device 130 and the priority operation switch 64 that instructs the lowering of the mounting table 410 during the operation of the feed control function unit 618 are input. The standby priority control function unit 619 that controls the mounting table driving unit 440 to lower the mounting table 410 at the paper feeding position to the standby position, and the paper amount detection unit 31 detects the standby priority control function unit 619 during operation. When the amount of paper in the paper storage device 120 to be reduced again falls below the lower limit set amount, an alarm is issued to the alarm unit 62, and the mounting table driving unit 440 is controlled to raise the mounting table 410 to the paper feeding position. A paper feed priority control function unit 620 is provided. The paper feed control function unit 618 and the paper feed priority control function unit 620 raise the mounting table 410 to the paper feed position after a set time has elapsed after the alarm is issued.

  The operation of the above configuration will be described. The control device 6 includes a regenerated pulp section control function section 611, a deinking pulp section control function section 612, a paper making section control function section 613, a finishing section control function section 614, and a wastewater treatment section control function section 615, respectively. The deinking pulp unit 2, the paper making unit 3, the finishing unit 4 and the waste water treatment unit 5 are controlled to prepare recycled paper from used paper.

  In the recycled pulp unit 1, shredded paper pieces of the paper material 7 stored in the storage container 29 of the paper material storage device 120 are sent to the measuring unit 11 by the paper supply unit 12, and the paper matches the unit amount of the batch processing operation in the pulper device 110. The quantity is supplied to the pulper device 110. When the batch processing operation is finished in the pulper device 110, the recycled pulp is sent to the deinking pulp section 2 through the transfer system 112. By repeating this operation, the used paper processing apparatus is continuously operated.

  During this time, the standby control function unit 617 of the control device 6 causes the loading table 410 of the paper feeding device 140 to stand by at the lower limit side standby position at which used paper can be stacked except during paper feeding. For this reason, while continuously operating the used paper processing device, the operator can always load and replenish used paper to the paper supply device 14 when the paper supply device is not performing the paper supply operation.

  When the paper sensor 7 stored in the storage container 29 decreases and the lower sensor 312 of the paper amount detection unit 31 detects that the paper amount is equal to or lower than the lower limit setting amount, the paper feed control function unit 618 of the control device 6 An alarm is issued to the alarm unit 62 to warn the user, and after the set time has elapsed after the alarm is issued, the mounting table drive unit 440 is controlled to raise the mounting table 410 to the paper feed position, and the separation supply unit 420 is controlled. Then, the waste paper is supplied to the shredder apparatus 130.

  In the separation supply unit 420, the paper feed roller 422 mounted on the drive shaft 421 feeds the used paper, the paper separator device 423 prevents the multiple used paper feed, and the used paper amount measuring unit 432 supplies the used paper to the shredder device 130. Measure the amount.

  If the sensor 451 of the load detection unit 450 detects that the used paper is out of the loading table 410 during the paper feeding operation, the paper feed control function unit 618 of the control device 6 issues an alarm to the alarm unit 62. The user is warned, and after the set time has elapsed after the alarm is issued, the mounting table driving unit 440 is controlled to lower the mounting table 410 to the standby position, and the user is urged to supply used paper.

  Further, the paper feed control function unit 618 of the control device 6 detects the current load amount of the placement table 410 by the sensor 451 of the load amount detection unit 450 when raising the placement table 410 to the paper feed position during paper feeding. When the loading amount of the mounting table 410 is insufficient with respect to the required amount of replenished paper required for the paper feeding operation, an alarm is issued to the alarm unit 62 to warn the user, and a set time after the alarm is issued After the elapse of time, the mounting table driving unit 440 is controlled to lower the mounting table 410 to the standby position, and the user is prompted to supply used paper.

  In the present embodiment, the sensor 451 of the load amount detection unit 450 detects that the used paper has run out, and the loading table 410 is lowered to the standby position to prompt the user to supply used paper. In this case, when the paper amount detection unit 31 detects the shortage of the paper amount, it is determined that the used paper on the mounting table 410 has run out, and the mounting table 410 is lowered to the standby position to prompt the user to replenish the used paper. It is also possible to set the paper feed control function unit 618 of the control device 6.

  When the replenishment of the used paper is completed and the sensor 451 of the load amount detection unit 450 detects the elimination of the used paper out of the loading table 410, the paper feed control function unit 618 of the control device 6 issues an alarm to the alarm unit 62. The user is warned, and after the set time has elapsed after the alarm is issued, the mounting table drive unit 440 is controlled to raise the mounting table 410 to the paper feeding position and resume paper feeding.

  Further, when the user presses the priority operation switch 64 for instructing the lowering of the mounting table 410 while the paper feed control function unit 618 is operating, the standby priority control function unit 619 of the control device 6 inputs the priority operation switch 64. In response, the mounting table driving unit 440 is controlled to lower the mounting table 410 at the paper feeding position to the standby position. The lowering point of the mounting table 410 by the standby priority control function unit 619 can be set to an arbitrary position on the way to the standby position as a user setting item. The lowering operation of the mounting table 410 by the standby priority control function unit 619 is such that the mounting table 410 continues to descend while the priority operation switch 64 is continuously pressed, and the mounting table 410 stops when the operation of the priority operation switch 64 is stopped. It is also possible to set so as to.

  When the user depresses the priority operation switch 64 again after the replenishment of the used paper, the standby priority control function unit 619 of the control device 6 receives the input of the priority operation switch 64 and controls the mounting table drive unit 440 to wait. The mounting table 410 at the position is raised to the paper feeding position.

  For this reason, even when the user is feeding paper, the user can preferentially stack used paper on the paper feeding device 14. The replenishment speed for supplying the paper material 7 from the paper supply device 140 to the paper material storage device 120 via the shredder device 130 is faster than the paper supply speed for supplying the paper material 7 from the paper material storage device 120 to the pulper device 110. Therefore, the paper feeding operation for supplying the paper material 7 to the pulper device 110 is not hindered.

  However, when the paper amount of the paper material storage device 120 detected by the paper amount detection unit 31 during the operation of the standby priority control function unit 619 again becomes equal to or less than the lower limit set amount, the paper feed priority control function unit 620 of the control device 6 is used. Issues an alarm to the alarm unit 62, controls the mounting table drive unit 440 to elevate the mounting table 410 to the paper feeding position after a set time has elapsed after the alarm is issued, and resumes the paper feeding operation.

5 to 6 show another embodiment of the present invention. Constituent elements that perform the same operations as those of the previous embodiment are denoted by the same reference numerals and description thereof is omitted.
In this Embodiment, the storage tank 8 which stores the regenerated pulp prepared with the pulper apparatus 110 is provided, and the transfer system 112 of the pulper apparatus 110 is connected to the storage tank 8 via the pump 113. Further, the sheet waste paper is directly supplied from the paper feeding device 140 to the pulper device 110.

  The paper feed control function unit 618 of the control device 6 drives the pump 113 to transfer the regenerated pulp from the pulper device 110 to the storage tank 8 through the transfer system 112, and then issues an alarm to the alarm unit 62 to warn the user. After a set time has elapsed after the alarm is issued, the mounting table driving unit 440 is controlled to raise the mounting table 410 to the paper feeding position and resume paper feeding. Other functions and effects are the same as in the previous embodiment.

DESCRIPTION OF SYMBOLS 1 Regenerated pulp part 2 Deinking pulp part 3 Paper making part 4 Finishing part 5 Waste water treatment part 6 Control apparatus 7 Paper material 8 Storage tank 11 Weighing part 12 Paper feed part 16 Paper material storage part 17 1st duct 18 Delivery apparatus 19 For dispersion | distribution Cyclone 20 Cyclone for discharge 21 Airflow 22 Blower 23 Second duct 24 Third duct 29 Storage container 30 Stirrer 31 Paper amount detection unit 61 CPU
62 Alarm unit 63 Display unit 64 Priority operation switch 110 Pulper device 111 Tank body 112 Transfer system 113 Pump 120 Paper material storage device 130 Shredder device 140 Paper feed device 301 Cut unit 302 Drive unit 311 Upper sensor 312 Lower sensor 410 Mounting table 420 Separation Supply Unit 421 Drive Shaft 422 Paper Feed Roller 423 Paper Sabaki Device 430 Transport Device 431 Transport Roller 432 Supply Paper Amount Measurement Unit 440 Loading Table Drive Unit 450 Stack Amount Detection Unit 451 Sensor 611 Recycled Pulp Unit Control Function Unit 612 Deinking Pulp Unit Control Function unit 613 Paper making unit control function unit 614 Finishing unit control function unit 615 Waste water treatment unit control function unit 616 Automatic operation control function unit 617 Standby control function unit 618 Paper feed control function unit 619 Standby priority control function unit 620 Paper feed priority control function Part

Claims (9)

A pulper device that disaggregates waste paper, a paper material storage device that stores shredded paper pieces to be supplied to the pulper device, a shredder device that supplies shredded paper pieces to the paper material storage device, and a sheet of waste paper to the shredder device In a used paper processing apparatus including a paper feeding device to be supplied and a control device for controlling each device,
The paper feeder moves up and down between a stacking table for stacking used paper, a lower standby position at which the used paper can be stacked, and an upper paper feed position at which the used paper can be fed. And a separation supply unit that separates and supplies the used paper on the mounting table at the paper feeding position one by one, and the control device does not perform a paper feeding operation other than during paper feeding. A paper feeding device for a used paper processing apparatus, characterized by having a standby control function unit that always keeps the mounting table in a standby position regardless of whether or not there is a load of used paper.   The paper material storage device includes a paper amount detection unit that detects a paper amount of the stored shredded paper pieces, and the control device detects that the paper amount of the paper material storage device detected by the paper amount detection unit is equal to or less than a lower limit set amount. A paper feed control function unit that issues a warning and controls the mounting table drive unit to raise the mounting table to the paper feeding position, and controls the separation supply unit to supply used paper to the shredder device. The paper feeding device of the used paper processing device according to claim 1.   The control device receives a priority operation switch for instructing the lowering of the mounting table during operation of the paper feed control function unit, and receives an input from the priority operation switch to control the mounting table driving unit, and to place the mounting table in the paper feeding position. The paper feeding device of the used paper processing apparatus according to claim 2, further comprising a standby priority control function unit that lowers the paper to a standby position.   The control device issues an alarm when the paper amount of the paper material storage device detected by the paper amount detection unit during the operation of the standby priority control function unit falls below the lower limit set amount, and sets the mounting table drive unit. The paper feeding device of the used paper processing apparatus according to claim 2, further comprising a paper feeding priority control function unit that controls and raises the mounting table to a paper feeding position.   5. The paper feed control unit according to claim 2 or 4, wherein the paper feed control function unit and the paper feed priority control function unit raise the mounting table to a paper feed position after a set time has elapsed after the alarm is issued. apparatus.   5. The paper feeding device of the used paper processing apparatus according to claim 2, wherein the lower limit set amount of the paper amount in the paper material storage device is a paper amount corresponding to a unit amount of batch processing operation in the pulper device. In a used paper processing apparatus comprising a pulper device for disaggregating used paper, a storage tank for storing recycled pulp prepared by the pulper device, a paper feeding device for supplying waste paper to the pulper device, and a controller for controlling each device ,
The paper feeder moves up and down between a stacking table for stacking used paper, a lower standby position at which the used paper can be stacked, and an upper paper feed position at which the used paper can be fed. And a separation supply unit that separates and supplies the used paper on the mounting table at the paper feeding position one by one, and the control device does not perform a paper feeding operation other than during paper feeding. A paper feeding device for a used paper processing apparatus, characterized by having a standby control function unit that always keeps the mounting table in a standby position regardless of whether or not there is a load of used paper.   The paper feeder has a supply paper amount measurement unit that measures the amount of used paper supplied to the pulper device, and the control device issues a warning after transferring the recycled pulp from the pulper device to the storage tank, 8. The sheet feeding control function unit according to claim 7, further comprising: a sheet feeding control function unit configured to control the table driving unit to raise the mounting table to a sheet feeding position and to control the separation supply unit to supply used paper to the pulper device. Paper feeding device for used paper processing equipment.   9. The paper feed device of the used paper processing apparatus according to claim 8, wherein the paper feed control function unit raises the mounting table to a paper feed position after a set time has elapsed after the alarm is issued.

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