JP5578857B2 - Waste paper processing equipment - Google Patents

Description

  The present invention relates to a technique for producing paper from recycled pulp obtained by separating waste paper, and relates to a small waste paper processing apparatus that can be installed in an office or the like where waste paper is generated to recycle the paper.

2. Description of the Related Art Conventionally, in Japan, a technology and a social system for collecting used paper once used, for example, used newspapers and regenerating the used paper are established.
A papermaking method performed in a general papermaking factory 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 through a process such as cooking, washing, bleaching, and selection by a chemical method, which is one of the pulping methods for extracting fibers from wood.
In the waste paper pulp process, the waste paper that is the raw material is dissolved in water, and metal, film, adhesive resin, printing ink (dye type, pigment type), which is a foreign matter other than paper fiber, using mechanical power and chemicals, The copy toner is separated and removed, and then bleached, dehydrated and dried to obtain waste 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 wire part, the prepared (regenerated) pulp is placed on a paper making net (wire) and dehydrated to make paper, and in the press part, the moisture in the wet paper containing a large amount of moisture from the wire part is removed. In the dryer part, the paper is dried by a dryer heated by steam, in the calendar part, the paper is smoothed by the paper between the rollers, and in the coater part, the base paper is coated with paint.

  In the finishing process, in the super calendar part, the micro unevenness of the paper surface coated on the coater part is smoothed to give gloss, and in the cutter and winder part, it is cut into a predetermined product size or wound around a roller.

  By the way, when making recycled paper from waste paper, there are the following problems. The consumption place such as the office where waste paper is generated by the consumption of paper and the paper mill that recycles the paper from the waste paper are separated, and cost and energy are required to transport the waste paper. Moreover, there is a risk that confidential information and the like written on the paper will be leaked to the outside by taking out the used paper. For this reason, the paper is finely cut with a shredder, but the shredded dust that has been finely cut is difficult to regenerate because the fibers are too short.

  In Patent Document 1, as a OA waste paper recycling apparatus, a processing unit that immerses a printed recording medium in a deinking agent, and a physical process is applied to the printing surface of the recording medium in the processing unit to deink the printing. A printing processing unit and a cutter unit capable of cutting a recording medium with an arbitrary width are described.

  Further, in Patent Document 2, as a slitter device, an upper unit that holds an upper blade and a lower unit that holds a lower blade, which are arranged on both sides facing a paper conveyance path, are coupled by a connecting plate, What has an upper guide plate which guides the cut-off side downward is described.

JP-A-6-206358 JP 2000-34053 A

However, with the above configuration, recycled paper is finally obtained as various standard paper sheets in the used paper recycling process. To change the size for cutting the recycled paper, it is necessary to perform the following changing operation after temporarily stopping the operation of the reproduction processing.
1. Change the slitter slit width to match the size of the recycled paper.
2. Change the cutting timing of the cutter to match the size of the recycled paper.
3. The guide width of the paper receiving device is changed according to the size of the recycled paper to be changed.
However, if the operation is temporarily stopped in a small paper machine, a harmful effect occurs. For example, in the papermaking section, there is a problem that the recycled pulp is hardened in the head box. In the drying section, the residual heat of the heater becomes an unstable factor in performance when the operation is resumed.

  The present invention solves the above-described problems, and can change the cutting size of the paper sheet of the recycled paper without causing a temporary stop during the operation of the recycling process, and the paper receiving tray of the paper receiving apparatus is changed. It is an object of the present invention to provide a used paper processing apparatus that can perform such processing.

In order to solve the above-mentioned problems, the used paper processing apparatus of the present invention includes a paper making unit for making recycled paper by making a recycled pulp prepared by separating a waste paper or a cut piece of used paper as a recycled raw material, and a recycled paper made A cutting unit that cuts the paper into a predetermined sheet size, and a control unit that controls the paper making unit and the cutting unit are arranged in order from the upstream side to the downstream side along the transport direction of the recycled paper. The first transport system, the second transport system, and the third transport system that can be controlled to different transport speeds are disposed between the second transport system and the third transport system, and the recycled paper is disposed in the width direction orthogonal to the transport direction. A cutter device for cutting and a slitter device disposed in the third transport system, the slitter device cutting each of both sides in the width direction of the recycled paper, and relatively moving and separating in the width direction of the recycled paper The first slitter that can move Has a knit and a second slitter unit,
The control means stops the third transport system and the second transport system, and causes the recycled paper to be transported to the third by the cutter device while bending the subsequent recycled paper in a loop between the first transport system and the second transport system. It is characterized by cutting into a preceding part on the system and a subsequent part on the first transport system and the second transport system .

In the used paper processing apparatus of the present invention, a paper making unit for making a recycled paper by making a recycled pulp prepared by breaking up a used paper or a cut piece of used paper as a recycled material, and cutting the recycled paper into a predetermined sheet size And a control unit for controlling the paper making unit and the cutting unit. The cutting unit is sequentially arranged from the upstream side to the downstream side along the transport direction of the recycled paper, and can be controlled at different transport speeds. A first conveying system, a second conveying system, a third conveying system, a cutter device that is disposed between the second conveying system and the third conveying system and cuts recycled paper in a width direction perpendicular to the conveying direction; A first slitter unit having a slitter device disposed in the transport system, wherein the slitter device cuts both sides of the recycled paper in the width direction and is relatively close and movable in the width direction of the recycled paper. And the second It has Tsu coater unit, the control means, while continuously driving the first conveyor system at a predetermined conveying speed, by controlling the first conveying system and the second conveying system a third transport system to different conveying speeds, the cutter The apparatus cuts the recycled paper into a preceding part on the third transport system and a subsequent part on the first transport system and the second transport system, and discharges the preceding part of the recycled paper from the third transport system, The relative distance between the first slitter unit and the second slitter unit of the slitter device in a state where the subsequent recycled paper is bent in a loop shape between the first conveyance system and the second conveyance system, and the recycled paper is bent in a loop shape. It is characterized by changing and setting.

  In the used paper processing apparatus of the present invention, the control means is configured to stop the third conveyance system and the second conveyance system, and while bending the subsequent recycled paper in a loop between the first conveyance system and the second conveyance system, the cutter The apparatus is characterized by cutting the recycled paper into a preceding part on the third transport system and a subsequent part on the first transport system and the second transport system.

  In the used paper processing apparatus of the present invention, the control means compares with the transport speed of the first transport system until the bending of the recycled paper between the first transport system and the second transport system is resolved after the slitter device is changed. Thus, the transport speed of the second transport system is controlled to be high.

  In the used paper processing apparatus of the present invention, the first slitter unit and the second slitter unit of the slitter apparatus have a guide for discharging the cut excess paper pieces downward from the third transport system.

  In the used paper processing apparatus of the present invention, a paper receiving device that receives a paper sheet of recycled paper that has been cut into a standard shape is provided at the subsequent stage of the cut portion in the transport direction of the recycled paper, and the paper receiving device is provided for each standard size of the recycled paper sheet. And a plurality of paper receiving trays provided so as to be switchable.

  As described above, according to the present invention, it is possible to change the cutting size of a recycled paper sheet without stopping the operation during the recycling operation of the used paper processing apparatus. That is, the first conveyance system is driven at a constant speed to change the length of the recycled paper sheet to be cut by the cutter device and the change of the recycled paper sheet width corresponding to the slit width of the slitter device. This can be realized while controlling the transport system, the second transport system, and the third transport system at different transport speeds. Generation | occurrence | production of wrinkles etc. can be prevented by eliminating bending.

  The recycled paper is cut into a standard size paper width by the slitter device, and the recycled paper is cut into the standard size paper length by the cutter device, so the excess paper pieces cut from both sides of the paper sheet are the standard size paper length Therefore, the cut excess paper piece does not become continuous paper, and clogging of the excess paper piece can be prevented.

  In addition, the paper receiving device can receive the paper sheets of the recycled paper on the paper receiving trays orderly by a plurality of paper receiving trays provided so as to be switchable for each standard size of the recycled paper sheets.

Schematic diagram showing a used paper processing apparatus in an embodiment of the present invention Schematic showing the recycled pulp section of the used paper processing equipment Schematic diagram showing the action of the fiber concentration adjustment section in the recycled pulp section of the used paper processing equipment Schematic diagram showing the deinking section of the used paper processing equipment Schematic showing the drying roller of the used paper processing equipment Schematic showing the cut part of the used paper processing equipment The perspective view which shows the slitter apparatus of the used paper processing apparatus Front view showing the slitter unit of the used paper processing apparatus Block diagram of the control unit of the used paper processing device Flow sheet showing the control of the used paper processing equipment Flow sheet diagram showing operation start condition check in the same control Flow sheet diagram showing operation stop condition check in the same control Flow sheet diagram showing operation preparation operation in the same control Flow sheet diagram showing stop preparation operation in the same control Schematic diagram showing normal operation of the used paper processing equipment Schematic diagram showing the slitter operation of the used paper processing equipment Schematic diagram showing the slitter adjustment operation of the used paper processing equipment Schematic diagram showing the return adjustment operation of the used paper processing device Schematic diagram showing return adjustment operation and slitter operation of the used paper processing apparatus

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, the used paper processing apparatus integrally includes a recycled pulp unit 1, a deinking pulp unit 2, a paper making unit 3, a finishing unit 4, and a drainage processing unit 5, and prepares (recycles) recycled paper from the used paper 6. And a control unit 7 for controlling the operation of the recycled pulp unit 1, the deinking pulp unit 2, the papermaking unit 3, the finishing unit 4, and the wastewater treatment unit 5.
(Recycled pulp part)
The recycled pulp unit 1 is a unit that prepares (regenerates) recycled pulp by separating the cut paper pieces of the used paper 6, and includes a standard paper tank 11 that forms a raw material storage unit that stores the recycled paper 6 as a standard raw material, A shredder tank 12 that forms a raw material storage unit that temporarily stores a cut piece of paper that has been cut into a predetermined size suitable for recycling by cutting the recycled paper 6 of the recycled material, a fiber amount adjusting unit 13, and a pulper 14 The fiber concentration adjusting unit 15 is provided.

  As shown in FIG. 2, the shredder tank 12 has an upper opening 121 that opens upward, and a bottom surface 122 forms an inclined surface that is inclined toward the discharge port 123. The discharge port 123 is provided with a discharge device 124 for discharging the cut paper piece 61. There are various discharge devices 124, but here, a plurality of blades are arranged radially around the rotation axis. A quantity measuring sensor 125 is disposed above the shredder tank 12, and the quantity measuring sensor 125 measures the quantity of the cut paper piece as a recycled material stored in the shredder tank 12. The amount of the cut paper piece is estimated by measuring.

Although illustration is omitted, the standard paper tank 11 is also provided with a quantity measuring sensor for measuring the quantity of the standard waste paper 6 as a recycled raw material.
The fiber amount adjustment unit 13 is disposed below the discharge port 123 of the shredder tank 12, and includes a tray part 131 that receives the cut paper piece 61 discharged from the discharge port 123, and a weighing unit 132 that supports the tray part 131. The weighing unit 132 measures the weight of the cut paper piece 61 put into the tray part 131, and adjusts the amount of the cut paper piece 61 put into the pulper 14, that is, the fiber amount, by changing the set weight related to the weighing. Similarly, the fiber amount adjusting unit 13 measures the weight of the standard waste paper 6 that is input from the standard paper tank 11, and changes the set weight related to the measurement, that is, the amount of the cut paper piece 61 that is input to the pulper 14, that is, Adjust the fiber amount.

  As shown in FIG. 3, the tray part 131 tilts the tray 131 a from a horizontal posture to a tilted posture in which the tray 131 a tilts toward the pulper 14, and has driving means such as a motor for tilting the tray 131 a. Further, the tray 131a is provided so as to be openable and closable between a normal position where the side wall 131b adjacent to the pulper 14 stands and a tilting position where the side wall 131b tilts toward the pulper 14, and the side wall 131b tilts as the tray 131a tilts. Then, it returns to the standing posture with the backward movement of the tray 131a.

  The cutting paper piece 61 is gradually dropped onto the tray 131a by the discharge device 124, and when the measurement value measured by the weighing unit 132 reaches the set value, the discharge device 124 is stopped, and the tray 131a is tilted to cut the cutting paper piece. 61 is put into the pulper 14. Similarly, the standard waste paper 6 is put into the pulper 14.

  The pulper 14 disaggregates the cut paper piece 61 into fibers, that is, recycled pulp, in a solvent such as clean water or white water. The tank body 141 into which the cut paper piece 61 is put, and the stirring that swirls inside the tank body 141 The blade 142 and drive means (not shown) such as a motor that rotationally drives the stirring blade 142 are provided. The tank body 141 is provided with a heater 143 and a temperature sensor 144 for heating the solvent to a predetermined temperature, and a solvent supply system 101 for supplying the solvent from the waste water treatment unit 5 communicates therewith.

  The pulper 14 communicates with the fiber concentration adjusting unit 15. The fiber concentration adjusting unit 15 supplies the recycled pulp-containing liquid to the deinked pulp unit 2 and the solvent from the waste water treatment unit 5 as the concentration adjusting solution. A concentration adjusting liquid supply system 103 is in communication.

In the pulper 14 and the fiber concentration adjusting unit 15, a solvent corresponding to the amount of paper of the regenerated raw material, here water, is charged into the tank body 141, and the stirrer blade 142 is driven to dissociate the fibers of the cut paper pieces to regenerate pulp. Is prepared (regenerated), and a regenerated pulp-containing liquid containing regenerated pulp is sent to the deinking pulp section 2 through the fiber concentration adjusting section 15.
(Deinking pulp section)
The deinking pulp unit 2 includes a storage tank 21, a pre-deinking dilution tank 22, and a deinking unit 23, and a transfer system 201 including a pipe, a pump, and the like between the storage tank 21 and the pre-deinking dilution tank 22. And a transfer system 202a including a pipe, a pump and the like and having a valve 202b is provided between the pre-deinking dilution tank 22 and the deinking unit 23, and the pre-deinking dilution tank 22 and a head box of the paper making unit 3 described later. A transfer system 202c having a valve 202d is provided between the pipes 31 and 31.

  The storage tank 21 stores the regenerated pulp-containing liquid sent from the fiber concentration adjusting unit 15 and supplies the regenerated pulp-containing liquid to the pre-deinking dilution tank 22. The dilution tank 22 before deinking is used to dilute the recycled pulp-containing liquid to a fiber concentration suitable for deinking, here about 1% by weight, and supplies a solvent as dilution water from the waste water treatment unit 5 104 communicates.

  When the valves 202b and 202d are switched, the recycled pulp-containing liquid in the pre-deinking dilution tank 22 flows to the deinking unit 23 through the transfer system 202a and directly flows to the head box 31 through the transfer system 202c. And can be switched.

  The deinking unit 23 is called a flowator and separates foreign matters such as ink and toner from the fiber. In the present embodiment, the deinking unit 23 has the configuration shown in FIG. The deinking section 23 has a front tank 231 and a rear tank 232, and the front tank 231 and the rear tank 232 communicate with each other at the opening on the upper end side of the partition wall 233 that forms the overflow weir. Heaters 234 and 235 are arranged in the front tank 231 and the rear tank 232, respectively, a fine bubble jet port 236 and a stirring blade 237 are arranged in the front tank 231, and a temperature sensor 238 is arranged in the rear tank 232. ing.

In the front tank 231, in the presence of the surfactant, the regenerated pulp-containing liquid containing foreign particles such as ink and toner is stirred by the stirring blade 237, and fine bubbles are generated from the outlet 236 in the regenerated pulp-containing liquid. Blowing is performed, and hydrophobic foreign particles are adhered to the surface of the bubbles of the surfactant to be floated and separated, and the hydrophilic fibers are transferred from the opening on the upper end side of the partition wall 233 to the rear tank 232 for deinking. At this time, the recycled pulp-containing liquid is heated to a predetermined temperature by the heaters 234 and 235, and the temperature is controlled by the temperature sensor 238.
(Paper making)
When the regenerated pulp-containing liquid in the pre-deinking dilution tank 22 flows to the deinking unit 23 through the transfer system 202a, the paper making unit 3 makes the deinked pulp flowing from the deinking unit 23 and recycles the regenerated paper. When the regenerated pulp-containing liquid in the pre-deinking dilution tank 22 flows directly to the head box 31 through the transfer system 202c, the regenerated pulp is made and regenerated paper is prepared (regenerated). 1 and includes a head box 31, a wire part 32, a dehydrating part 33, a pressing part 34, and a dryer part 35.

  The wire portion 32 has a mesh belt 323 that is stretched between rollers 321 and 322 on both sides, and the mesh belt 323 forms an endless track. The mesh belt 323 is uniformly ejected with a deinked pulp-containing liquid including deinked pulp from the head box 31, and drained to form a fiber layer.

  The dewatering unit 33 is composed of a pair of upper and lower water absorbing belts 332 made of felt stretched between a plurality of rollers 331, and transfers the paper 333 made from the mesh belt 323 to the water absorbing belt 332, and between the upper and lower water absorbing belts 332. Water is sandwiched between and dehydrated. The water absorbing belt 332 dehydrates between a pair of upper and lower dewatering rollers 334 provided on the traveling track.

The press unit 34 sandwiches the paper 333 made between the water-absorbing belts 332 and squeezes and dehydrates it through a pair of upper and lower dewatering rollers 341.
The dryer unit 35 sandwiches the paper 333 formed between a pair of upper and lower cloth conveyor belts 352 spanned between a plurality of rollers 351, and presses the plurality of drying rollers 353 to dry the paper 333 formed. In addition to the cloth, the transport belt 352 may be made of a material such as rubber or resin.

As shown in FIG. 5, the dryer unit 35 includes a temperature sensor 354 that measures the surface temperature of the drying roller 353 by disposing a conveying belt 352 around a drying roller 353 provided with a heater therein.
(Finishing part)
The finishing section 4 has a calendar section 41 and a cutting section 42. The calendar section 41 passes the paper 333 made between a plurality of press rollers 411 to increase the flatness of the paper. The recycled paper 100 is completed by cutting into sizes.

  As shown in FIG. 6, the cut section 42 includes a first transport system 421, a second transport system 422, and a third transport system 423 that are sequentially arranged from the upstream side to the downstream side along the transport direction of the recycled paper. The first transport system 421, the second transport system 422, and the third transport system 423 include transport rollers 421a, 422a, and 423a, respectively, and each transport system can be controlled to a different transport speed.

Between the second transport system 422 and the third transport system 423, a cutter device 424 for cutting the recycled paper 100 in the width direction orthogonal to the transport direction is disposed.
A slitter device 500 is disposed in the third transport system 423. As shown in FIG. 7, the slitter device 500 includes a first slitter unit 501 and a second slitter unit 502 that cut both sides of the recycled paper 100 in the width direction, and the first slitter unit 501 and the second slitter. The unit 502 is provided so as to be relatively close and movable along a guide rod 503 arranged in the width direction of the recycled paper 100.

  The first slitter unit 501 and the second slitter unit 502 operate synchronously by the rotational drive of the main shaft 504, and move relatively close to each other while moving independently by the rotational drive of the respective feed screw shafts 505.

As shown in FIG. 8, the first slitter unit 501 and the second slitter unit 502 have a guide 506 for discharging the cut excess paper pieces downward from the third transport system 423.
As shown in FIG. 15, the uncut cut recycled paper 100 discharged from the dryer unit 35 is guided to the cutting unit 42, and the conveyance speeds of the first conveyance system 421, the second conveyance system 422, and the third conveyance system 423 are made constant. In this state, the first slitter unit 501 and the second slitter unit 502 of the slitter device 500 cut each side of the recycled paper 100 in the width direction. The cut excess paper piece is guided downward by the guide 506 and is removed from the conveying surface.

  As shown in FIG. 16, the transport direction of the recycled paper 100 that has passed the cutter device 424 is detected by detecting the transport distance of the recycled paper 100 by measuring the rotation speed of the transport roller 422 a by a sensor provided in the second transport system 422. When the length of the paper reaches a predetermined value, that is, the length of one side in the vertical direction of a certain standard size, the recycled paper 100 is cut in the width direction by the cutter device 424, and one side along the transport direction of the recycled paper 100 is cut. Adjust the length of one side of the standard size.

  The cutting by the cutter device 424 is performed in a state where the second conveyance system 422 and the third conveyance system 423 are temporarily stopped while the first conveyance system 421 is continuously operated. The preceding part on the transport system 423 and the subsequent part on the first transport system 421 and the second transport system 422 are cut and separated.

Thereafter, the subsequent speed between the first transport system 421 and the second transport system 422 is controlled by controlling the transport speed of the second transport system 422 and the third transport system 423 faster than the transport speed of the first transport system 421. The width direction of the recycled paper 100 by the slitter device 500 with respect to the recycled paper 100 in the preceding portion, which is freed from the bending of the recycled paper at the portion (the bending at the time of cutting by the cutter) and is cut to a predetermined length in the transport direction. Then, the recycled paper 100 is prepared to a standard size.
(Paper receiving device)
A paper receiving device 600 that receives a sheet of the recycled paper 100 that has been cut into a standard shape is provided at the subsequent stage of the cutting unit 42 in the transport direction of the recycled paper 100. The paper receiving device 600 has a plurality of paper receiving trays 601 for each standard size of the recycled paper 100, and each paper receiving tray 601 is provided so as to be switchable by its up / down driving.

The paper receiving device 600 selectively receives the recycled paper 100 adjusted to the standard size by the cutting unit 42 by the paper receiving tray 601 corresponding to the standard size.
(Wastewater treatment department)
The waste water treatment unit 5 includes tank bodies of a white water tank 51 and a waste water treatment unit 52. The white water tank 51 stores waste water containing recycled pulp flowing from the wire part 32 through the papermaking drainage system 105, and returns to each step again. Supply. The waste water treatment unit 52 treats the deinking waste liquid flowing from the deinking unit 23 through the deinking drainage system 106. The waste water treatment unit 52 passes through a filter to remove fibers, ink, and toner, and is neutralized by adding chemicals to the public. Treat to the quality of water that can be drained into sewage. The white water tank 51 communicates with a makeup water supply system 107 that supplies clean water as makeup water.
(Control part)
As shown in FIG. 9, the control unit 7 has the following functional units as functional circuits set in the CPU 71. That is, a regenerated pulp unit control function unit 711 that controls the operation of the regenerated pulp unit 1, a deinking pulp unit control function unit 712 that controls the operation of the deinking pulp unit 2, and a paper making unit that controls the operation of the paper making unit 3 The control function unit 713, the finishing unit control function unit 714 that controls the operation of the finishing unit 4, the waste water treatment unit control function unit 715 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 716 that executes sequentially, and an operation lock control function unit that inputs an operation start permission instruction or a disapproval instruction to the automatic operation control function part 716 in accordance with a cutting paper piece presence / absence signal input from the quantity measurement sensor 125 717, a target number setting function unit 718 for setting the target number of recycled paper to be prepared (regenerated), a counter function unit 719 for counting the number of prepared (regenerated) recycled paper, A drainage operation control function unit 720 that performs a predetermined drainage operation at the end of operation in the pulp unit 1, the deinking pulp unit 2, and the papermaking unit 3, a cleaning operation control function unit 721 that performs a predetermined cleaning operation, and a quantity measuring sensor 125 A predicted reproduction number calculation function unit 722 that calculates the expected number of reproductions that can be regenerated before the end of the regeneration operation within the maximum possible number of reproductions from the measured amount of raw material, and at least one of the scheduled operation start time and scheduled operation end time A time setting function unit 723 having at least one of a function for arbitrarily setting one of the scheduled times and a function for arbitrarily setting the operation time, an operation time integration function unit 724 for integrating the operation time of the regeneration operation, and a counter When the number of completed reproductions accumulated by the function unit 719 reaches the target number of reproductions set by the target number setting function unit 718, An operation stop selection function unit 725 for selectively setting whether to stop the regeneration operation when the operation time accumulated by the time integration function unit 724 reaches the operation time set by the time setting function unit 723, and the completion of the regeneration operation for the target number of reproductions The expected regeneration time calculation function unit 726 that calculates the expected regeneration time required until the end, the power mode selection function unit 727 that selectively sets whether to execute the power saving mode or the auto power off mode after the regeneration operation ends, and the regeneration operation is stopped In order to regenerate the amount of the raw material measured by the operation stop time measuring function unit 728 for measuring the operation stop time during the operation, the operation stop cause determination function unit 729 for determining the cause of the operation stop, and the quantity measuring sensor 125 Reproduction that calculates the required estimated regeneration time and issues a warning to the warning means described later when the operation time set in the time setting function section exceeds the estimated regeneration time An expected time calculation function unit 730 and a cutting size change function unit 731 are included, and the cutting size change function unit 731 transports the first transport system 421, the second transport system 422, and the third transport system 423 of the cut unit 42. The speed and the distance between the first slitter unit 501 and the second slitter unit 502 of the slitter device 500 are controlled, and the paper receiving tray 601 of the paper receiving device 600 is selectively switched.

  The control unit 7 also includes a timing input unit 73 for inputting at least one of operation start and operation stop timing as an instruction signal to the automatic operation control function unit 716, and a display unit 74 such as a liquid crystal panel that also functions as a warning unit. The operation interruption instructing means 75 for instructing the user to interrupt the regeneration operation is provided. The warning means may divide the image display area of the display unit 74, may be provided separately from the display unit 74, and may be alarm sound, voice, or the like.

  In this embodiment, the timing input unit 73 includes an internal clock disposed inside the control unit 7 and inputs an instruction signal to the automatic operation control function unit 716 when the internal clock reaches a scheduled time. However, the timing input unit 73 may be an input port for inputting an instruction signal issued when an external clock arranged outside the control unit 7 reaches a scheduled time or an instruction signal issued from an external device. .

The control unit 7 performs the above-described operation in the regenerated pulp unit 1, the deinking pulp unit 2, the paper making unit 3, the finishing unit 4, and the waste water treatment unit 5, respectively, as a regenerated pulp unit control function unit 711 and a deinking pulp unit control function unit. 712, a papermaking section control function section 713, a finishing section control function section 714, and a wastewater treatment section control function section 715.
(Operation control)
The user operates various switches such as a touch panel provided on the display unit 74 to control at least one of the scheduled operation start time and the scheduled operation end time, or the operation time for which the operation is continuously continued. The time setting function unit 723 of the unit 7 is set. When only the scheduled operation start time is set, the possible operation time from the start of the device to the end of the regeneration operation is indefinite time until the completion of the regeneration operation, and only the scheduled operation end time is set. In this case, the operable time until the end of the regeneration operation for stopping the operation of the device is a limited time from the current time to the scheduled operation end time, and when setting the scheduled operation start time and the scheduled operation end time, The operable time until the end of the regeneration operation for stopping the operation is a limited time from the scheduled operation start time to the scheduled operation end time.

  When setting the operation time to continue operation continuously, the operation possible time until the end of the regeneration operation to stop the operation of the device is the limited time until the operation time set from the current time expires, and the operation is scheduled to start When the time is set together, the operable time is a limited time until the set operation time expires from the scheduled operation start time.

  The expected regeneration number calculation function unit 722 of the control unit 7 calculates the maximum reproducible number from the amount of the regenerated raw material measured by the quantity measuring sensor 125, and can regenerate within the maximum possible number and before the end of the regeneration operation. The estimated reproduction number is calculated and the calculated reproduction number is displayed on the display unit 74.

  The expected reproduction time calculation function unit 730 is necessary to reproduce the expected reproduction time necessary for reproducing the amount of the raw material measured by the quantity measurement sensor 125, that is, the maximum possible number of sheets calculated by the expected reproduction number calculation function unit 722. When the operation time set by the time setting function unit exceeds the estimated reproduction time, a warning is issued to the display unit 74 that also serves as a warning means. For example, a warning is displayed as “the stored material will be used up in XX hours”. In addition, by measuring the weight when measuring the amount of raw material, as a warning "If you put XX sheets of XX size standard paper into the standard paper tank 11, you can operate in the set operation time Is displayed.

  The user operates various switches such as a touch panel provided on the display unit 74 to set the desired number of recycled papers within the expected number of reproductions in the target number setting function unit 718 as the reproduction target number. At this time, if the target reproduction number is equal to or less than the expected reproduction number, a warning is displayed on the display unit 74.

  The expected reproduction time calculation function unit 726 calculates the estimated reproduction time required until the end of the reproduction operation for reproducing the target number of recycled paper, and displays the estimated reproduction time on the display unit 74. When the reproduction target number is the total number of expected reproductions, it is possible to omit the setting of the reproduction target number, and the expected reproduction time calculation function unit 726 will complete the reproduction operation for reproducing the total number of expected reproductions. The estimated reproduction time required is calculated, and the estimated reproduction time is displayed on the display unit 74.

  Normally, the regeneration operation ends based on the operation time. However, the user operates the various switches such as a touch panel provided on the display unit 74, so that the operation stop selection function unit 725 uses the regeneration target number or the operation time as a reference. It is possible to select and set whether to stop the regeneration operation. When the reproduction target number is set as a reference, the reproduction completion number accumulated by the counter function unit 719 is set by the target number setting function unit 718 without being restricted by the limited time set by the time setting function unit 723. Regeneration operation is performed until When the operation time is set as a reference, the operation time accumulated by the operation time integration function unit 724 is a time even if the reproduction completion number accumulated by the counter function unit 719 does not reach the reproduction target number set by the target number setting function unit 718. When the limited time set by the setting function unit 723 is reached, the regeneration operation is stopped.

  Furthermore, the user selects and sets either the power saving mode or the auto power off mode in the power mode selection function unit 727 by operating various switches such as a touch panel provided on the display unit 74. In the power saving mode, the used paper processing apparatus is set in a standby state with the minimum necessary power after the regeneration operation is completed, and in the auto power off mode, the used paper processing apparatus is completely stopped after the regeneration operation is completed.

  Control from the start to the stop of the automatic operation by the control unit 7 is performed along the flow sheet shown in FIG. That is, from the stop state 900, the operation start condition check 910, the operation preparation operation 920, the recycled paper preparation 930, the operation stop condition check 940, and the stop preparation operation 950 are performed to stop the apparatus 960.

  In the operation start condition check 910, as shown in FIG. 11, a determination 911 as to whether or not there is an operation start signal is performed. The operation start signal is an instruction signal input from the timing input unit 73 to the automatic operation control function unit 716. In this embodiment, the operation start signal is input when the internal clock reaches the scheduled time set by the time setting function unit 723. Signal.

  In the operation preparation operation 920, as shown in FIG. 13, water injection 921 into the tank is performed. And at the time of initial operation, the remaining water such as pumps and pipes is washed and discharged with fresh water to suppress the deterioration of quality. Water is poured into the remaining portions at a predetermined timing as necessary. That is, the required amount of water is poured into the pulper 14 and the pre-deinking dilution tank 22.

Next, the heaters 143, 234, and 235 are energized to perform a heating operation 922.
Next, it is determined 923 whether or not the water temperature of the pulper 14 and the deinking unit 23 measured by the temperature sensors 144 and 238 and the surface temperature of the drying roller 353 measured by the temperature sensor 354 have reached the set temperature.

  In the recycled paper production 930, the recycled pulp section control function section 711, the deinking pulp section control function section 712, the papermaking section control function section 713, the finishing section control function section 714, and the wastewater treatment section control function section 715 are respectively used. 1, the deinking pulp section 2, the papermaking section 3, the finishing section 4, and the wastewater treatment section 5 are controlled to perform the above-described operation.

  During the recycled paper production 930, the expected reproduction number calculation function unit 722 of the control unit 7 includes a reproduction completion number accumulated by the counter function unit 719 and a remaining time calculated from the operation time accumulated by the operation time accumulation function unit 724. Then, the total number of predicted regeneration sheets that can be regenerated from the end of the regeneration operation to the end of the regeneration operation is recalculated, and the recalculated regeneration estimated number of sheets is displayed on the display unit 74.

  In addition, when the user changes the time setting by the time setting function unit 723, the predicted reproduction number calculation function unit 722 of the control unit adds the reproduction completion number accumulated by the counter function unit 719 and the operation time accumulation function unit 724. Based on the remaining time after the setting change calculated from the operation time, the total number of reproducible reproductions that can be regenerated before the end of the regenerative operation is recalculated, and the recalculated reproducible reproduction number is displayed on the display unit 74.

  Further, the control unit 7 measures the operation stop time while the regeneration operation is stopped by the operation stop time measurement function unit 728, and responds to the operation stop cause and the operation stop time determined by the operation stop cause determination function unit 729. To perform a preset maintenance operation.

  For example, when the user gives an instruction to interrupt the regeneration operation by the operation interruption instruction means 75, the operation stop cause determination function unit 729 of the control unit 7 determines that the operation interruption instruction is the cause of the operation stop, and the operation stop time is a predetermined time. If it is within, the cleaning operation of the paper making unit 3 set in advance as the maintenance operation is executed. The operation stop cause determination function unit 729 determines that the operation stop instruction is the cause of the operation stop, and when the operation stop time exceeds a predetermined time, it is set as a discard operation, a drain operation, and a maintenance operation in advance for discarding the recycled paper during the regeneration operation. Perform the cleaning operation.

  Further, when a power failure occurs, the operation stop cause determination function unit 729 of the control unit 7 determines that the power failure is the cause of the operation stop and performs the power failure recovery operation when the operation stop time is within a predetermined time. , The cleaning operation of the paper making unit 3 set in advance as a maintenance operation is executed, and when the operation stop cause determination function unit 729 determines that the power outage is the cause of the operation stop and the operation stop time exceeds a predetermined time, the power failure recovery operation is performed. After the execution, a discarding operation for discarding the recycled paper in the course of the recycling operation, a draining operation, and a cleaning operation set in advance as a maintenance operation are executed.

  The content of the maintenance operation for the operation stop time can be arbitrarily set by the user, and the user can arbitrarily change the setting of the reference value for the operation stop time. All operations are stopped during an emergency stop.

  In the case of a user's arbitrary interruption request or abnormal stop (power failure, emergency stop), it is possible to back up the situation before the stop and perform a process that can be recovered halfway. At the time of a power failure or emergency stop, it is also possible to issue a warning with a communication means such as a LAN, a device emergency stop lamp, or a buzzer sound. It is also possible to set and register in advance a specific part that allows the operation to be continued at the time of the interruption, for example, stirring of each tank, etc. at the time of an arbitrary interruption request of the user.

  When a power failure occurs during drying, power is supplied from the standby power source to the finishing unit 4, and the paper is discharged after the paper is dried by the residual heat of the dryer unit 35. If it is not completely dry, it can be configured to be discharged to a reject tray.

  The battery provided as a backup power source is charged by commercial power or solar power generation, but a fuel cell can be used as the backup power source so that paper can be manually ejected when the remaining battery level is insufficient. Is also possible.

  In the operation stop condition check 940, as shown in FIG. 12, it is determined 941 whether or not the end time has been reached. This end time is indicated by an instruction signal input from the timing input unit 73 to the automatic operation control function unit 716. In this embodiment, when the internal clock reaches the scheduled time, the operation scheduled from the start of operation is performed. This is an instruction signal that is input when the time has elapsed. If it is the end time, the operation proceeds to the stop preparation operation.

  If it is not the end time, a determination 942 is made as to whether or not the set amount of processing has been completed. The control unit 7 counts the number of times the paper making unit 3 is driven, or detects the completed recycled paper by a sensor (not shown) provided in the finishing unit 4, thereby determining the target number of prepared recycled papers. The counter function unit 719 counts, and the operation is stopped when the count value of the counter function unit 719 reaches the target number set by the user in the target number setting function unit 718. Therefore, excessive operation is suppressed and only the minimum operation required by the user is realized. When processing for the set amount is completed, the operation proceeds to the stop preparation operation.

  If the processing for the set amount has not been completed, the amount measuring sensor 125 checks 943 whether or not there is a cut paper piece inside the standard paper tank 11 and the shredder tank 12. If there is no cut paper piece, a warning 944 is displayed on the display unit 74, and the operation proceeds to the stop preparation operation. If there is a piece of cut paper, continue operation.

  In the stop preparation operation 950, as shown in FIG. 14, the operation of stopping the current supply to the heaters 143, 234, 235 is performed 951, and the surface temperature of the drying roller 353 measured by the temperature sensor 354 has become equal to or lower than the set temperature. A determination 952 of whether or not is performed, and a fiber and water treatment 953 is performed.

  In the fiber and water treatment 953, the operation is controlled by the drainage operation control function unit 720, the fibers remaining in the papermaking unit 3 are sent to the final position and reused, and other fibers are processed for disposal, and the drainage operation. As for water, it removes foreign matters, returns to neutral with chemicals and discharges it.

  Next, a drive stop 954 is performed, and in cleaning 955 for each part performed as a maintenance operation, a cleaning operation is controlled by the cleaning operation control function unit 721 to automatically wash away fibers adhering to the tank or the belt with water. In addition, a cleaning operation is performed with cleaning water containing a preservative. The user can arbitrarily set the cleaning operation with the cleaning water containing the preservative. Next, in the treatment 956 for generated dust, moisture is removed from both the fiber and the ink to solidify.

In this way, the control unit 7 controls the recycled pulp unit 1, the deinking pulp unit 2, and the paper making unit 3 by the drainage operation control function unit 720 and the washing operation control function unit 721. By performing this maintenance operation, each part of the apparatus can be kept clean at all times, and as a result, the quality of recycled paper can be maintained.
(Cutting size change)
The user operates various switches such as a touch panel provided on the display unit 74 to set the size and the required number of copies of the finished recycled paper 100 in advance. For example, 500 sheets of A4-sized recycled paper 100 are first prepared, and thereafter A3 is prepared as long as there are raw materials. Alternatively, when the cutting size of the recycled paper 100 is changed during the reproduction operation, the user gives an instruction to the control unit 7 by operating various switches such as a touch panel provided on the display unit 74. In addition to displaying the set number of sheets, the display unit 74 can also count and display the number of recycled sheets 100 to be discharged.

  As shown in FIG. 15, the cutting size changing function unit 731 of the control unit 7 guides the uncut state recycled paper 100 discharged from the dryer unit 35 to the cutting unit 42, and the first conveyance system 421 and the second conveyance system 422. In the state where the transport speed of the third transport system 423 is controlled at a constant speed, the both sides in the width direction of the recycled paper 100 are cut by the first slitter unit 501 and the second slitter unit 502 of the slitter device 500.

  As shown in FIG. 16, the transport direction of the recycled paper 100 that has passed the cutter device 424 is detected by detecting the transport distance of the recycled paper 100 by measuring the rotation speed of the transport roller 422 a by a sensor provided in the second transport system 422. When the length of the paper reaches a predetermined value, that is, the length of one side in the vertical direction of a certain standard size, the recycled paper 100 is cut in the width direction by the cutter device 424, and one side along the transport direction of the recycled paper 100 is cut. Adjust the length of one side of the standard size.

  The cutting by the cutter device 424 is performed while the second conveyance system 422 and the third conveyance system 423 are temporarily stopped while the operation at a constant speed of the first conveyance system 421 is continued, and the recycled paper 100 is removed by the cutter device 424. It cut | disconnects and divides | segments into the precedent site | part on the 3rd conveyance system 423, and the subsequent site | part on the 1st conveyance system 421 and the 2nd conveyance system 422.

  The recycled paper 100 is cut into a standard size paper width by the slitter device 500, and the recycled paper 100 is cut into a standard size paper length by the cutter device 424, so that the excess paper pieces cut from both sides of the paper sheet are the standard size. Therefore, the cut excess paper piece does not become continuous paper, and clogging of the excess paper piece can be prevented. Further, by installing the storage box below the cutter device 424, it is possible to stably perform the operation of receiving the excess paper pieces discharged downward from the guide 506 with the storage box.

  As shown in FIG. 17, the second transport system 422 is operated at a lower speed by continuing the operation of the first transport system 421 at a constant speed and the stop of the second transport system 422, or compared with the first transport system 421. By doing so, the slitter device is applied to the recycled paper 100 driven by the third conveying system 423 while the subsequent recycled paper 100 is bent in a loop between the first conveying system 421 and the second conveying system 422. The cutting of both sides in the width direction of the recycled paper 100 by 500 is resumed, and the recycled paper 100 is prepared to a standard size.

  Next, the preceding portion of the recycled paper 100 is discharged from above the third conveyance system 423 while maintaining the state where the subsequent recycled paper 100 is bent in a loop between the first conveyance system 421 and the second conveyance system 422. In this state, the relative distance between the first slitter unit 501 and the second slitter unit 502 of the slitter apparatus 500 is adjusted, and the cutting size is changed and set to the target standard size width.

  Alternatively, the second transport system 423 is operated at a higher speed than the first transport system 422, and the third transport system 423 is operated at a higher speed than the second transport system 422. While maintaining the state where the subsequent recycled paper 100 bends in a loop shape between the two transport systems 422, the slitting device 500 has a cutting size between the rear end of the preceding portion and the leading end of the subsequent portion. With the gap necessary for the change secured, the relative distance between the first slitter unit 501 and the second slitter unit 502 of the slitter device 500 is adjusted, and the cutting size is changed and set to the target standard size width. For this reason, the cutting size of the paper sheet of the recycled paper 100 can be changed during the regenerating operation without stopping the operation.

  Further, the paper receiving tray 601 of the paper receiving device 600 is selectively switched to set the paper receiving tray 601 according to the standard size after the size change in the cutting unit 42. For this reason, the paper receiving device 600 can receive the sheets of the recycled paper 100 on the paper receiving tray 601 in an orderly manner for each standard size.

  As shown in FIG. 18, after the cutting size change setting of the slitter device 500, the recycled paper 100 between the first conveyance system 421 and the second conveyance system 422 is operated while the first conveyance system 421 is operated at a constant speed. Until the bending is eliminated, the transport speeds of the second transport system 422 and the third transport system 423 are controlled to be higher than the transport speed of the first transport system 421. Thus, generation | occurrence | production of a wrinkle etc. can be prevented by eliminating bending after cutting size change.

  As shown in FIG. 19, while the first conveyance system 421 is operated at a constant speed until the bending of the recycled paper 100 is eliminated, the conveyance speeds of the second conveyance system 422 and the third conveyance system 423 are set to the values of the first conveyance system 421. Control is performed faster than the conveyance speed, and the first slitter unit 501 and the second slitter unit 502 of the slitter apparatus 500 after the change setting are used to cut both sides in the width direction of the recycled paper 100 according to the changed standard size. To do. Then return to normal operation. Changing the length of the standard size in the vertical direction is handled by changing the length of the recycled paper 100 passing through the cutter device 424 in the conveyance direction.

DESCRIPTION OF SYMBOLS 1 Recycled pulp part 2 Deinking pulp part 3 Paper making part 4 Finishing part 5 Waste water treatment part 6 Waste paper 7 Control part 11 Standard paper tank 12 Shredder tank 13 Fiber quantity adjustment part 14 Pulper 15 Fiber density adjustment part 21 Storage tank 22 Before deinking Dilution tank 23 Deinking part 31 Head box 32 Wire part 33 Dehydrating part 34 Press part 35 Dryer part 41 Calendar part 42 Cut part 51 White water tank 52 Waste water treatment part 61 Cutting paper piece 71 CPU
73 Timing input unit 74 Display unit 75 Operation interruption instruction means 100 Recycled paper 101 Solvent supply system 102 Transfer system 103 Concentration adjustment liquid supply system 104 Diluted water supply system 105 Papermaking drainage system 106 Deinking drainage system 107 Replenishment water supply system 121 Upper opening 122 Bottom 123 Discharge port 124 Discharge device 125 Quantity measuring sensor 131 Dish part 132 Weighing part 131a Dish 131b Side wall part 141 Tank body 142 Stirring blade 143 Heater 144 Temperature sensor 201, 202 Transfer system 231 Front tank 232 Rear tank 233 Partition wall 234 235 Heater 236 Jet outlet 237 Stirring blade 238 Temperature sensor 321, 322 Roller 323 Mesh belt 331 Roller 332 Water absorption belt 333 Paper 334 Dewatering roller 341 Roller 351 Roller 352 Conveying belt 353 Drying roller 354 Temperature sensor 411 Press roller 421 First transport system 422 Second transport system 423 Third transport system 421a, 422a, 423a Transport roller 424 Cutter device 500 Slitter device 501 First slitter unit 502 Second slitter unit 503 Guide rod 504 Main shaft 505 Feed screw Shaft 506 Guide 600 Paper receiving device 601 Paper receiving tray 711 Recycled pulp section control function section 712 Deinking pulp section control function section 713 Paper making section control function section 714 Finishing section control function section 715 Wastewater treatment section control function section 716 Automatic operation control function Unit 717 Operation lock control function unit 718 Target number setting function unit 719 Counter function unit 720 Drain operation control function unit 721 Cleaning operation control function unit 722 Reproduction expected number calculation function unit 723 Time setting function unit 724 Operation time integration function unit 725 Operation Stop selection function unit 726 reproduction expected time calculating function unit 727 power mode selection function unit 728 down time measurement function unit 729 operation stop cause determination function unit 730 reproduction expected time calculating function unit 731 cut resizing unit

Claims (6)

Paper making part for making recycled paper by making recycled pulp prepared by breaking apart used paper or waste paper cut pieces as recycled raw material, cutting part for cutting the made recycled paper into a predetermined sheet size, paper making part and Provided with control means for controlling the cut part,
The cutting unit is sequentially arranged from the upstream side to the downstream side along the conveyance direction of the recycled paper, and the first conveyance system, the second conveyance system, the third conveyance system, and the second conveyance that can be controlled to different conveyance speeds, respectively. A cutter device that is disposed between the system and the third transport system and cuts recycled paper in the width direction perpendicular to the transport direction;
A slitter device disposed in the third transport system;
Slitter apparatus, to cut each of both sides in the width direction of the recycled paper, and have a first slitter unit and the second slitter unit capable relatively moved closer and move away in the width direction of the recycled paper,
The control means stops the third transport system and the second transport system, and causes the recycled paper to be transported to the third by the cutter device while bending the subsequent recycled paper in a loop between the first transport system and the second transport system. A waste paper processing apparatus for cutting a preceding part on a system and a subsequent part on a first transport system and a second transport system . Paper making part for making recycled paper by making recycled pulp prepared by breaking apart used paper or waste paper cut pieces as recycled raw material, cutting part for cutting the made recycled paper into a predetermined sheet size, paper making part and Provided with control means for controlling the cut part,
The cutting unit is sequentially arranged from the upstream side to the downstream side along the conveyance direction of the recycled paper, and the first conveyance system, the second conveyance system, the third conveyance system, and the second conveyance that can be controlled to different conveyance speeds, respectively. A cutter device that is disposed between the system and the third transport system and cuts recycled paper in the width direction perpendicular to the transport direction;
A slitter device disposed in the third transport system;
The slitter device has a first slitter unit and a second slitter unit that cut each of both sides in the width direction of the recycled paper and that can relatively move and move away in the width direction of the recycled paper,
The control means controls the first transport system, the second transport system, and the third transport system to different transport speeds while continuously driving the first transport system at a constant transport speed, so that the recycled paper is fed by the cutter device. Cutting the preceding part on the third transport system and the subsequent part on the first transport system and the second transport system, discharging the preceding part of the recycled paper from the third transport system, The subsequent recycled paper is bent in a loop shape between the second transport systems, and the relative distance between the first slitter unit and the second slitter unit of the slitter device is changed and set in a state where the recycled paper is bent in a loop shape. Used paper processing equipment.   The control means stops the third transport system and the second transport system, and causes the recycled paper to be transported to the third by the cutter device while bending the subsequent recycled paper in a loop between the first transport system and the second transport system. 3. The used paper processing apparatus according to claim 2, wherein the used paper processing apparatus is cut into a preceding part on the system and a subsequent part on the first transport system and the second transport system.   The control means, after the change setting of the slitter device, until the bending of the recycled paper between the first transport system and the second transport system is eliminated, the transport speed of the second transport system compared to the transport speed of the first transport system. The used paper processing apparatus according to claim 2, wherein the paper is controlled quickly.   The first slitter unit and the second slitter unit of the slitter device each have a guide for discharging the cut excess paper pieces downward from the third transport system. Waste paper processing equipment.   A paper receiving device for receiving a paper sheet of recycled paper that has been cut into a fixed form is provided at the subsequent stage of the cut portion in the transport direction of the recycled paper, and the paper receiving device is provided with a plurality of switches that can be switched for each standard size of the paper sheets of the recycled paper. The used paper processing apparatus according to claim 1, further comprising a paper receiving tray.

Images