JP2015003387A - Cutting device and cutting method in waste paper recycling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waste paper recycling apparatus where the handling of a short-sized end material produced by cutting band-like paper obtained by making paper from a waste paper pulp liquid is easy and paper clogging when cutting the band-like paper can be avoided and to provide a cutting device in the waste paper recycling apparatus.SOLUTION: A cutting device comprises: a conveying part 42 for conveying a band-like paper 65; a cutter 51 for cutting the band-like paper 65; a front end detecting means 59 for detecting that the band-like paper 65 is conveyed to the installation position of the cutter 51 or to an upstream side by a predetermined length from the installation position; and a control unit 47. The control unit 47 includes a front end cutting controlling means 97 which detects that the front end of the band-like paper 65 is conveyed to the installation position of the cutter 51 or the upstream side of the installation position by the front end detecting means 59 and controls so as to repeatedly cut the band-like paper to a smaller size than that of recycled paper 7 within a predetermined range from the front end of the band-like paper 65 when the band-like paper is cut by the cutter 51.

Description

  The present invention relates to a cutting apparatus for used paper recycling processing apparatus and a cutting method for used paper recycling processing apparatus.

2. Description of the Related Art Conventionally, there is known a used paper recycling apparatus that obtains recycled paper by cutting a belt-like paper obtained by papermaking a used paper pulp solution obtained by breaking up used paper into a recycled paper of a predetermined size. On the other hand, similarly to the belt-like paper obtained by papermaking, the following Patent Document 1 discloses an apparatus including a cutter that cuts roll paper as a strip-like paper in which long papers are continuous. The following Patent Document 1 is provided with a roll set that can be conveyed while gripping the roll paper and can be separated from each other so as not to contact the roll paper, and the control unit of the roll set opens the roll set. Thus, there is disclosed a printer that performs control so as to correct the skew of the roll paper.

JP 2006-188352 A

However, the printer disclosed in Patent Document 1 is not configured as a cutting unit of a used paper recycling apparatus. On the other hand, the belt-like paper obtained by papermaking of waste paper pulp liquid, unlike roll paper used in a printer, needs to be cut because both side edges in the width direction are not aligned. The end material produced by cutting the side edge is bulky and difficult to handle.

This invention solves the above-mentioned subject, and aims at provision of the cutting device of the used paper reproduction | regeneration processing apparatus which makes easy handling of the end material produced by cutting the strip | belt paper obtained by papermaking of a used paper pulp liquid. .

  In order to achieve the above-mentioned object, the cutting device of the used paper recycling apparatus according to the present invention cuts the strip-like paper obtained by making the used paper pulp liquid obtained by breaking up the used paper into the recycled paper of a predetermined size. A cutting unit for conveying a belt in the longitudinal direction, a cutter extending in a width direction of the belt, and cutting the belt in a direction crossing the transport direction, and at least a belt A slitter for cutting a side edge portion of a cut paper piece generated by cutting the paper by the cutter along a conveying direction, and an end material storage box for storing the end material generated by the cutting are provided, and the slitter Was provided downstream of the cutter in the transport direction.

Further, in the above-described configuration, a guide is provided for guiding the end material generated by cutting with a slitter to the lower side than the transport surface of the belt-like paper.

And in each said structure, the cutting blade for making the end material produced by cutting the side edge part of a strip | belt-shaped paper with a slitter further finely, and the cutting blade control means which controls a cutting blade were provided.

Furthermore, the cutting method of the used paper recycling apparatus according to the present invention is a cutting method for cutting a strip-like paper obtained by making a used paper pulp solution obtained by breaking up used paper into recycled paper of a predetermined size. The belt is transported along the longitudinal direction, and the belt is cut in a direction intersecting the transport direction by a cutter extending in the width direction of the belt, and then the belt and / or the belt is cut by the cutter. The side edge portion of the cut paper piece generated by cutting by the cutting is cut along the transport direction by a slitter to cut the recycled paper, and the end material generated by the cutting is stored in the end material storage box.

According to the cutting device of the used paper recycling apparatus of the present invention, since the slitter is provided downstream of the cutter in the transport direction of the strip, the cutter cuts the length of the end material generated by cutting the strip. It is possible to suppress the length to be equal to or less than the length in the conveying direction, to facilitate handling, and to suppress bulkiness.

In addition, when a guide for guiding the end material generated by cutting with the slitter to the lower side from the transport surface of the belt is provided, the end material can be easily guided downward without being scattered inside the apparatus.

And when it is equipped with a cutting blade for further finely cutting the end material generated by cutting the side edge of the belt-like paper with a slitter and a cutting blade control means for controlling the cutting blade, it is cut finely with the slitter. The end material can be further finely cut with a cutting blade, and the bulk of the end material can be further reduced.

Furthermore, the cutting method of the used paper recycling apparatus according to the present invention is a cutting method for cutting a strip-like paper obtained by making a used paper pulp solution obtained by breaking up used paper into recycled paper of a predetermined size. The belt is transported along the longitudinal direction, and the belt is cut in a direction intersecting the transport direction by a cutter extending in the width direction of the belt, and then the belt and / or the belt is cut by the cutter. The side edge of the cut paper piece generated by cutting by the sheet is cut into the recycled paper by cutting along the transport direction by the slitter, and the end material generated by the cutting is stored in the end material storage box, so the strip-shaped paper The length of the end material produced by cutting can be shortened, and the bulkiness can be suppressed.

1 is a schematic configuration diagram of a used paper recycling processing apparatus including a cutting apparatus according to an embodiment of the present invention. It is the schematic which shows the internal structure of the used paper pulp liquid manufacturing part of the said used paper reproduction | regeneration processing apparatus. It is a perspective view of the deinking part of the said used paper reproduction | regeneration processing apparatus. It is the top view and sectional drawing of the said deinking part. It is the structure schematic of the paper making part of the said used paper reproduction | regeneration processing apparatus. It is the structure schematic of the finishing part of the said used paper reproduction | regeneration processing apparatus. It is a block diagram of the control part of the finishing part. It is the schematic which shows the embodiment of the said cutting part.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of a configuration of a used paper recycling processing apparatus including a cutting apparatus according to the present invention. In FIG. 1, a used paper recycling apparatus 100 integrally includes a used paper pulp liquid production unit 1, a deinking pulp unit 2, a paper making unit 3, and a finishing unit 4.

The used paper pulp liquid manufacturing unit 1 separates the used paper 6 to produce used paper pulp liquid, and the deinking pulp unit 2 deinks the used paper pulp manufactured in the used paper pulp liquid manufacturing unit 1. The paper making unit 3 papers the deinked pulp solution obtained in the deinking pulp unit 2 and dehydrates and dries the wet paper obtained by the paper making. The finishing unit 4 The recycled paper 7 is obtained by finishing the band-like paper 65 obtained by drying the paper by cutting or the like.

(Waste Paper Pulp Production Department)
FIG. 2 is a schematic diagram showing the internal structure of the waste paper pulp liquid production unit 1. The used paper pulp liquid production unit 1 is provided with a used paper feeding unit 11 for feeding used paper 6 and a pulper 18. The pulper 18 disintegrates the waste paper 6 and the cut paper pieces (not shown) of the waste paper 6 into pulp fibers, that is, waste paper pulp, in water and a disintegration accelerator liquid.

Here, the used paper pulp liquid is a liquid containing used paper pulp, water and the like obtained by separating the used paper 6 and the cut pieces of the used paper in the pulper 18. The waste paper pulp liquid to be stored is dissolved or mixed with waste paper in the middle of disaggregation, printing components such as ink components and toner components taken out in water by disaggregation, and disaggregation accelerators.

The pulper 18 is provided with a stirring tank 181 into which used paper 6 and the like are charged, a water supply unit 182 for supplying water to the stirring tank 181, and a disaggregation accelerator supply unit 183. As the disaggregation accelerator for promoting disaggregation of the waste paper 6 supplied from the disaggregation accelerator supply unit 183, sodium hydroxide, sodium carbonate, etc. can be used, and sulfamic acid, hydrochloric acid, sulfuric acid, phosphoric acid, aluminum sulfate can be used. Acids such as sodium chlorite, sodium hypochlorite, sodium chlorite, hydrogen peroxide and other oxidizing agents, surfactants, bleaching agents, PH stabilizers, chelating agents, dispersing agents, and the like can also be used supplementarily.

A stirring blade 184 is provided at the bottom of the stirring tank 181 for stirring and separating the waste paper 6 and the like together with the water supplied from the water supply unit 182, and has a driving means 188 such as a motor for rotating the stirring blade 184. doing. Moreover, the used paper pulp liquid extraction part 187 for taking out the obtained used paper pulp liquid is provided.

(Deinking pulp section)
As shown in FIG. 1, the deinking pulp unit 2 includes a pre-deinking dilution unit 21 and a deinking unit 22. The pre-deinking diluting section 21 is a fiber concentration suitable for deinking the waste paper pulp liquid sent from the pulper 18, here about 0.1 wt% to 5.0 wt%, more preferably 0.3 wt% to The liquid is diluted to about 2.0% by weight, and is provided with a diluting liquid supply unit (not shown) for supplying diluting water, a surfactant as a deinking agent, and the like.

When the fiber concentration is 0.1 wt% to 5.0 wt%, the printing component such as the ink component and the toner component and the deinking agent are efficiently brought into contact with each other in the subsequent deinking portion 22 to facilitate the printing component and the like. Can be removed.

3 is a perspective view of the deinking unit 22, FIG. 4A is a plan view of the front deinking unit 22, and FIG. 4B is a cross-sectional view taken along line AA in FIG. 4A. Show. The deinking section 22 is for producing a deinked pulp by separating and removing printing components such as an ink component and a toner component dissolved or mixed in the used paper pulp liquid. A blade 222 and a foam receiving tank 223 are provided.

The used paper pulp liquid distribution tank 221 distributes used paper pulp liquid containing printing components such as an ink component and a toner component which are adjusted to a predetermined concentration by supplying the diluted solution in the pre-deinking dilution unit 21. The waste paper pulp liquid distribution tank 221 is partitioned into a plurality of deinking chambers 225 by a plurality of partition walls 224, and as shown in the plan view of FIG. All the deinking chambers 225 communicate with each other by opening alternately. At the bottom of each deinking chamber 225, a bubble supply unit 226 is provided for supplying fine bubbles into the used paper pulp liquid flowing through the used paper pulp liquid circulation tank 221.

Further, in the waste paper pulp liquid circulation tank 221, a stirring blade (shown) is used to stir the used paper pulp liquid stagnated at a predetermined position where the flow rate of the used paper pulp liquid is reduced and the waste paper pulp liquid is easy to stagnate and to flow downstream. (Omitted). There are various types of stirring blades, and examples include a stirring blade having a structure in which a plurality of blades are arranged radially around the rotation axis. Further, an inflow portion 229a for allowing the used paper pulp liquid to flow into the used paper pulp liquid circulation tank 221; and a used paper pulp liquid (deinked pulp liquid) containing deinked pulp generated after the deinking treatment are removed And an outflow portion 229b for allowing the liquid to flow out.

Moreover, although the temperature sensor 227 for detecting the temperature of the used paper pulp liquid in each deinking chamber 225 and the heater 228 are provided on the front and back surfaces of the partition wall 224, the temperature management of the used paper pulp liquid is not performed. However, the temperature sensor 227 and the heater 228 may be omitted.

The blade 222 is for sweeping air bubbles floating above the used paper pulp liquid circulation tank 221 to overflow the peripheral wall of the used paper pulp liquid circulation tank 221 to the foam receiving tank 223 side. It is provided above and is configured to reciprocate while being guided by the guide rail 222b by driving the motor 222a.

As shown in FIG. 4 (a), the foam receiving tank 223 is provided in a rectangular shape in plan view so as to surround the outer periphery of the used paper pulp liquid circulation tank 221, and is generated in the used paper pulp liquid circulation tank 221 at the time of deinking. The air bubbles swept out by the blade 222 are received and temporarily stored. As shown in FIGS. 3 and 4 (b), the defoaming tank 223 has a defoaming liquid ejection part 223 a for ejecting defoaming liquid such as water for washing away the bubbles attached to the inner wall surface of the defoaming tank 223. Provided. A plurality of defoaming liquid ejection portions 223a are provided over the entire circumference of the upper and middle steps of the inner wall surface of the foam receiving tank 223.

Furthermore, the foam receiving tank 223 includes a wind supply unit (not shown) that blows off the moisture of the bubbles by blowing warm air or hot air on the stored bubbles, and the like. A deinking drainage extraction unit that takes out the deinking drainage accumulated in the bubble receiving tank 223 at the bottom and flows it out to a deinking drainage processing device (not shown) that performs solid-liquid separation processing of the deinking drainage. 75.

(Paper making)
FIG. 5 is a schematic configuration diagram of the paper making unit 3. The paper making unit 3 papers the deinked pulp liquid that has been deinked by the deinking pulp unit 2, dehydrates, and dries, and includes a head box 31, a wire unit 32, a dehydrating unit 33, and a dryer unit 34. .

  The head box 31 has an opening at the top, and a waste paper pulp liquid supply port 31a is formed at the bottom. Guide members 31b having a predetermined length are cantilevered along both width edges of the paper making wire 323 for making the deinked pulp liquid at both ends in the width direction of the deinked pulp liquid supply port 31a. The guide member 31b prevents the waste paper pulp liquid supplied from the head box 31 onto the papermaking wire 323 from flowing outward from the side edge of the papermaking wire 323, and makes the papermaking width of the wet paper 64 a predetermined length. Set and maintain.

The wire portion 32 is stretched around a plurality of rotating rollers 321 and is provided with a papermaking wire 323 that forms an endless track. A water portion 325 is provided. The water receiving unit 325 is connected to a white water tank (not shown), and the white water tank is connected to the pulper 18 and the pre-deinking diluting unit 21 by piping and a pump so that the white water in the white water tank can be circulated and used. It is configured.

The dewatering unit 33 has a pair of upper and lower endless water-absorbing belts 332a and 332b made of felt, which are stretched between a plurality of rotating rollers 331, respectively, and the upper water-absorbing belt 332a and the lower water-absorbing belt 332b are partly It is in contact. In a portion where the upper water absorbing belt 332a and the lower water absorbing belt 332b are partially in contact with each other, a plurality of a pair of dewatering rollers 334 are provided which sandwich and dehydrate both the water absorbing belts 332a and 332b.

The dryer unit 34 includes a plurality of rotating rollers 351 and a drying roller 343 disposed in a hood (not shown), and includes a pair of upper and lower conveying belts 342 spanned between the plurality of rotating rollers 351 and the drying roller 343. . The material of the conveyor belt 342 is not particularly limited. For example, cloth, heat-resistant resin, metal, or the like is used, and the upper and lower conveyor belts 342 run in a state where a part of the conveyor belts 342 is in contact. The drying roller 343 is arranged. The drying roller 343 includes a heater 345 inside, a winding belt 342 is wound around the outer peripheral surface, and a temperature sensor (not shown) that measures the temperature of the surface of the drying roller 343.

It is obtained by drying the wet paper 64 carried by the lower transport belt 342 by the dryer unit 34 on the downstream side in the transport direction of the wet paper 64 and further downstream from the separation position of the upper and lower transport belts 342. A presser roller 36 that presses the belt-like paper 65 that is continuous in a belt-like shape is provided, and a scraper 37 that peels the belt-like paper 65 from the transport belt 342 is provided in the vicinity of the downstream side of the presser roller 36.

(Finishing part)
As shown in FIG. 6, the finishing unit 4 includes a cutting unit 41 for cutting the strip-shaped paper 65 obtained in the dryer unit 34 into recycled paper 7 having a predetermined size, and a paper receiving unit 84. The cutting unit 41 includes a cutting device C including a cutting unit 43, a transport unit 42, and a control unit 47 (see FIG. 7).

The cutting means 43 extends in the width direction of the strip paper 65, and cuts the strip paper 65 in a direction intersecting the transport direction, and a pair of left and right provided on the downstream side of the cutter 51 in the transport direction of the strip paper 65. The slitter 52 is provided. The cutter 51 includes a cutter upper blade 51a and a cutter lower blade 51b that are respectively disposed above and below the conveyance surface of the belt 65. The cutter upper blade 51a is configured to be movable up and down by a cutter lifting and lowering means 53. When the cutter upper blade 51a is lifted and lowered by the cutter lifting and lowering means 53, the cutting edge of the cutter upper blade 51a is brought into sliding contact with the cutting edge of the cutter lower blade 51b. 65 is cut.

The slitter 52 cuts the right and left side edges of the strip-shaped paper 65 and the cut-sheet piece 66 generated by cutting the strip-shaped paper 65 by the cutter 51 along the transport direction. The slitter 52 is a disc-shaped slitter upper blade 52a. And a slitter lower blade 52b. The left and right slitters 52 are respectively suspended by a slitter guide rod 71 extending in the width direction of the strip paper 65, and both the left and right slitters 52 in the width direction of the strip paper 65 by a slitter feed device 88 including a screw feed mechanism or the like. The slitter 52 moves so as to approach and separate in synchronization.

Below the slitter 52, a guide 68 is provided that guides the edge material 49 generated by cutting the left and right side edges of the strip-shaped paper 65 and the cut-sheet piece 66 by the slitter 52 below the transport surface of the strip-shaped paper 65. . Moreover, although illustration is abbreviate | omitted, you may provide the cutting blade for making the end material 49 guided below by the guide 68 further fine, and the cutting blade control means which performs control which operate | moves a cutting blade. An end material storage box (not shown) for storing the end material 49 guided downward by the guide 68 is provided below the guide 68 and the cutting blade.

The transport unit 42 transports the belt 65 along the longitudinal direction, and includes a first transport unit 44 and a second transport unit 45. The first transport unit 44 is provided upstream of the cutter 51 of the cutting means 43 in the transport direction of the strip paper 65, and a receiving roller 58 is provided to receive the strip paper 65 peeled from the transport belt 342 by the scraper 37 in the dryer unit 34. The first transport roller 61 is disposed downstream of the receiving roller 58. In addition, a first drive unit 54 that rotationally drives the first transport roller 61 and the receiving roller 58 via a belt (not shown) is provided.

Above the first conveying roller 61, a first pressing roller 76 is provided which is disposed opposite to the first conveying roller 61 and sandwiches the belt-shaped paper 65 between the first conveying roller 61. Is configured so that it can be moved up and down by a pressing roller lifting means 87 using a cam, and the first pressing roller 76 is lifted so that the belt-like paper 65 sandwiched between the first conveying roller 61 can be released. It has become.

Between the receiving roller 58 and the 1st conveyance roller 61, the front-end part detection means 59 which detects that the front-end part of the strip | belt-shaped paper 65 has been conveyed the predetermined length upstream of the cutter 51 installation position is provided. . One front end detection means 59 is provided at a substantially central portion in the width direction of the belt-like sheet 65 in plan view, and is a transmission type in which the light emitting element 56 and the light receiving element 57 are arranged so as to sandwich the transport surface of the belt. An optical sensor is used.

The second transport unit 45 is provided on the downstream side of the first transport unit 44 and the cutter 51. The second transport unit 45 includes three transport rollers of a second transport roller 62, a third transport roller 63, and a fourth transport roller 64 in order from the upstream side, and above these three transport rollers. The second presser roller 77, the third presser roller 78, and the fourth presser roller 79 are disposed so as to be movable up and down by presser roller elevating means (not shown). Furthermore, the second transport unit 45 includes a second drive unit 55 that rotationally drives the three transport rollers 62, 63, and 64 via a belt (not shown).

The slitter 52 is provided between the second conveyance roller 62 and the third conveyance roller 63. Further, when the obtained recycled paper 7 is discharged to the downstream side of the fourth transport roller 64, the left and right side edges of the recycled paper 7 are lifted higher than the central portion in the width direction and are seated. A member 69 is provided.

Further, the second transport unit 45 is provided with a paper thickness detecting means 60 for detecting the thickness of the recycled paper 7 obtained by cutting. The configuration of the paper thickness detection hand 60 is not particularly limited as long as it can detect the thickness of the paper. For example, as shown in FIG. 6, a paper thickness detection roller configured to be able to rise by the thickness of the paper. The sensor 60b for measuring the rising amount of the axis 60a and a light-emitting element and a light-receiving element arranged so as to sandwich the transport surface of the recycled paper are detected, and the amount of light transmitted is detected. A transmission type sensor capable of calculating the paper thickness is exemplified.

As shown in FIG. 7, the control unit 47 includes a front and rear end cutting control unit 91, a skew feeding correction unit 92, a sorting control unit 93, a first conveyance unit high-speed conveyance unit 94, a second conveyance unit high-speed conveyance unit 95, and a dimension change control. Means 96, front end cutting control means 97, and paper thickness control means 98 are provided. The control unit 47 is configured as a part of a control unit (not shown) that controls the operation of the entire used paper recycling processing apparatus 100, and performs control in conjunction with other configuration units as appropriate. The configuration may be such that only the device C is controlled exclusively.

The front / rear edge cutting control unit 91 stops the first driving unit 54 and the second driving unit 55 and rotates the first conveying roller 61 when the cutting position of the belt 65 is conveyed to the position where the cutter 51 is disposed. The cutter lifting / lowering means is stopped in a state where the conveyance of the belt 65 is temporarily stopped and the belt 65 is sandwiched between the first conveyance roller 61 and the first pressing roller 76, the second conveyance roller 62 and the second pressing roller 77. 53 is operated to lower the cutter upper blade 51a so as to cut the strip 65 along the width direction.

The skew feeding correction means 92 operates the pressing roller lifting / lowering means 87 to raise the first pressing roller 76, thereby releasing the state in which the belt 65 is held and correcting the skew of the belt 65 in the first transport unit 44. To do.

The sorting control means 93 controls to cut the predetermined number of recycled papers 7 to a slightly larger size so that the finally obtained recycled papers 7 can be sorted by a predetermined number of preset sheets.

Immediately after cutting by the cutter 51 and immediately restarting the conveyance of the first conveyance unit 44, the first conveyance unit high-speed conveyance unit 94 sets the conveyance speed of the first conveyance unit 44 to the conveyance speed of the conveyance belt 342 of the dryer unit 34. Control is performed so that the belt-like sheet 65 slackened as a result of stopping the conveyance of the first conveyance unit 44 for cutting is quickly conveyed.

The second transport unit high-speed transport unit 95 cuts the left and right side edges of the cut paper piece 66 cut front and back by the cutter 51 using the slitter 52 and discharges the obtained recycled paper 7 to the paper receiving unit 84. The transport speed of the recycled paper 7 in the second transport unit 45 is controlled to be higher than the transport speed of the first transport unit 44.

The dimension change control means 96 is used when the user inputs from the recycled paper size input means 81 an input for changing the size of the recycled paper 7 to be produced while the used paper recycling processing apparatus 100 is in operation. The size of the recycled paper 7 can be reduced by changing the cutting location of the cutting means 43 while receiving the continuous supply of the strip 65 from the transport belt 342 of the dryer unit 34 to the cutting device C without stopping the entire operation. To change. The dimension change control means 96 includes a conveyance direction length cutting change means 96a and a width direction length cutting change means 96b. The conveyance direction length cutting change means 96a operates the cutter lifting / lowering means 53 to lower the cutter 51. The timing of cutting along the width conveyance direction of the belt 65, that is, the direction crossing the conveyance direction is changed, and the length of the obtained recycled paper 7 in the conveyance direction is changed.

The width-direction length cutting changing unit 96b is a slitter feeding device at the same timing as when the first conveying unit 44 and the second conveying unit 45 are stopped when the front and rear end cutting control unit 91 performs cutting using the cutter 51. The length of the recycled paper 7 in the width direction is changed by driving 88 and changing the slitter 52 position to a predetermined position corresponding to the size of the recycled paper 7 that was changed during operation.

When the front end cutting control means 97 detects that the front end of the belt 65 has been conveyed upstream of the cutter 51 installation position or a predetermined length thereof by the front end detection means 59, the cutting by the cutter 51 is performed. In addition, the belt-like paper 65 within a predetermined range set in advance from the front end of the belt-like paper 65 is controlled to be repeatedly cut more finely than the size of the recycled paper 7.

The paper thickness control means 98 adjusts the conveying speed of the paper making wire 323 of the paper making section 3 based on the value detected by the paper thickness detection means 60, and the paper of the recycled paper 7 is set from a predetermined range of paper thickness. When the thickness is thin, the feeding speed of the papermaking wire 323 is decreased to control the supply amount of the used paper pulp liquid per unit time to the papermaking wire 323. Conversely, when the thickness is thick, the papermaking wire 323 is conveyed. Control is performed to increase the speed and decrease the supply amount of waste paper pulp liquid per unit time to the papermaking wire 323.

Further, the cutting apparatus C includes an input unit 80 including an operation panel, and the input unit 80 includes a recycled paper size input unit 81 and a sorting sheet number input unit 82. The recycled paper size input means 81 is for inputting the size of the recycled paper 7 finally obtained as desired by the user. The size of the recycled paper 7 that can be input from the recycled paper size input means 81 is not limited to the standard sizes such as A4 and B5, but may be configured so that the user can freely enter vertical and horizontal numerical values.

Further, the recycled paper size input means 81 is set in advance so as to input a frequently used paper size such as A4 size when the user does not input the desired size of the recycled paper 7. It is also possible to keep it. Further, the recycled paper size input means 81 is configured not only to input before starting the operation of the used paper recycling processing apparatus 100 but also to be input during the operation, and the recycled paper 7 obtained during the operation of the used paper recycling processing apparatus 100 can be input. The size can be changed.

The number-of-sorting input means 82 is for inputting the number of sheets that the user wants to classify in advance or during operation so that the obtained recycled paper 7 can be sorted every predetermined number.

As shown in FIG. 6, the paper receiving unit 84 is provided on the downstream side of the second transport unit 45, and a paper storage box 70 that stores and stores the recycled paper 7 discharged by the fourth transport roller 64 in a stacked state. And a lifting / lowering base 85 on which the paper storage box 70 is placed and lifts / lowers the paper storage box 70 by lifting / lowering means (not shown). The material of the paper storage box 70 can be synthetic resin, paper or the like, and is not particularly limited, but is preferably made of paper such as corrugated cardboard which is easy to carry because of its light weight.

Although only one paper storage box 70 may be placed on the lifting platform 85, two or more paper storage boxes 70 may be placed in piles as shown in FIG.

(Operation of the first embodiment)
The operation of the used paper recycling apparatus 100 according to this embodiment will be described below.
First, as shown in FIG. 2, a predetermined amount of used paper 6 whose weight has been measured in advance is input from the used paper input unit 11 and reaches the agitation tank 181. Further, water and a disaggregation accelerator in proportions according to the weight of the used waste paper 6 are respectively introduced into the agitation tank 181 from the water supply unit 182 and the disaggregation accelerator supply unit 183, respectively.

And the drive means 188 is operated, the stirring blade 184 is rotated, and the used paper 6 is stirred with water and a disaggregation promoter in the stirring tank 181 to produce used paper pulp liquid. The manufactured waste paper pulp liquid is taken out from the waste paper pulp liquid take-out section 187 and sent to the deinking pulp section 2 as shown in FIG.

In the deinking pulp unit 2, first, the waste paper pulp solution is supplied with dilution water and a surfactant as a deinking agent from the diluting solution supply unit so that the fiber concentration is suitable for deinking in the pre-deinking diluting unit 21. Dilute waste paper pulp liquor. Next, the used paper pulp liquid adjusted to a predetermined fiber concentration is sent to the deinking unit 22.

In the deinking unit 22, the used paper pulp liquid that has flowed into the used paper pulp liquid circulation tank 221 shown in FIGS. 3 and 4 from the inflow portion 229 a is sequentially supplied from the left or right opening of the partition wall 224 to the adjacent deinking chamber 225. Circulate. In each deinking chamber 225, fine bubbles are blown from the bubble supply unit 226 into the waste paper pulp liquid in the presence of the deinking agent, and toner particles are formed on the surface of the bubbles generated in large quantities without disappearing due to the presence of the deinking agent. Hydrophobic foreign matters such as the like are attached and floated on the top of each deinking chamber 225. Further, if necessary, a stirring blade is operated so as to promote smooth circulation of the used paper pulp liquid in the used paper pulp distribution tank 221.

The hydrophilic fibers sequentially flow through the deinking chamber 225 together with water. In this way, deinking is performed to remove the ink component and the printing component of the toner component from the waste paper pulp liquid. At that time, if necessary, the temperature sensor 227 may detect the temperature of the used paper pulp liquid, and the heater 228 may control the temperature so that the used paper pulp liquid is maintained at a predetermined temperature. The temperature management is not necessarily performed.

After introducing the waste paper pulp liquid into the deinking section 22, when a predetermined time elapses and the deinking process proceeds and air bubbles float above the deinking chambers 225, the motor 222a is driven to move the guide rail 222b to the guide rail 222b. The blade 222 is reciprocated in the vertical direction in FIG. 4A while being guided, and air bubbles floating above the used paper pulp liquid circulation tank 221 are swept out into the foam receiving tank 223. The bubbles swept out to the foam receiving tank 223 are washed away by the defoaming liquid ejected from the defoaming liquid ejecting section 223a and accumulated in the lower part of the foam receiving tank 223.

The deinking liquid containing the water accumulated in the bubble receiving tank 223, the defoaming liquid ejected from the defoaming liquid jetting part 223a, the deinking agent, the printing component such as the ink component and the toner component, etc. The liquid is taken out from the liquid take-out section 75, sent to the deinking / draining apparatus, drained, and then discharged to the outside.

On the other hand, the waste paper pulp fluid that has circulated through all the deinking chambers 225 in the waste paper pulp fluid distribution tank 221 is deinked to become deinked pulp from which printing components and the like have been removed. The black pulp liquid flows out from the outflow part 229b and is sent to the papermaking part 3.

In the paper making unit 3, the deinked pulp liquid containing deinked pulp after deinking is uniformly supplied to the guide member 31b on the paper making wire 323 running from the head box 31, and the water is drained by relatively draining water. The wet paper 64 is formed as a fiber layer containing a large amount. The water flowing down below the papermaking wire 323 is received by the water receiving unit 325 and sent from the water receiving unit 325 to the white water tank.

When the wet paper 64 on the papermaking wire 323 reaches the end of the forward path, the wet paper 64 is transferred to the water absorption belt 332a on the upper side of the dewatering unit 33. Thereafter, the water is sandwiched between the lower water-absorbing belt 332b and dehydrated by absorbing moisture contained in the wet paper 64 to the water-absorbing belts 332a and 332b, and further dewatered by being depressurized by the dewatering rollers 334a and 334b.

The wet paper 64 dehydrated by the dehydrating unit 33 is sent to the dryer unit 34 and is sandwiched between a pair of upper and lower conveying belts 342 that travel. Then, the wet paper 64 is dried by being conveyed while being brought into contact with the plurality of drying rollers 343 heated by the heater 345 and maintained at a predetermined temperature via the conveyance belt 342, and the dried wet paper 64 is the paper. Becomes a strip-shaped paper 65 which is continuous in a strip shape.

On the downstream side of the dryer unit 34, the belt-like paper 65 is peeled off from the transport belt 342 by the scraper 37 while being pressed by the pressing roller 36, and sent to the finishing unit 4.

As shown in FIG. 6, in the finishing unit 4, the belt-like paper 65 is first received by the receiving roller 58 and is conveyed to the first conveying roller 61 on the downstream side while being guided. When the front end detection unit 59 detects that the front end of the belt 65 has been transported between the receiving roller 58 and the first transport roller 61, the cutting unit 43 causes the belt 65 to be reproduced in a predetermined manner. Cut to the size of paper 7.

At that time, the front and rear edge trimming control unit 91 drives both the first drive unit 54 and the second drive unit 55 to convey the belt-like paper 65 to a predetermined recycled paper size input to the recycled paper size input unit 81. When the cut portion of the corresponding belt-like paper 65 is conveyed to the installation position of the cutter 51, the first drive unit 54 and the second drive unit 55 are stopped, and the conveyance by the first conveyance unit 44 and the second conveyance unit 45 is temporarily performed. stop. Then, the cutter upper / lower blade 53 is used by the cutter lifting / lowering means 53 in a state where the first and second transport rollers 61 and 76 and the second transport roller 62 and the second presser roller 77 sandwich the belt 65 before and after the cutting portion. 51a is lowered and slidably contacted with the cutter lower blade 51b to cut the belt-like paper 65 along the width direction. This operation is repeated every time the cut portion of the belt 65 is conveyed to the cutter 51 installation position.

By cutting with the cutter 51, the belt-like paper 65 becomes a cut paper piece 66 cut along the width direction. Then, after the cutting by the cutter 51, the front and rear end cutting control means 91 drives the first drive unit 54 and the second drive unit 55 to resume the conveyance of the first conveyance unit 44 and the second conveyance unit 45.

The slitter 52 is moved in advance by a slitter feeding device 88 to a predetermined position corresponding to the cutting position formed along the transport direction, and the slitting section 52 cuts the cutting position formed on the left and right side edges of the cutting paper piece 66. Thus, the recycled paper 7 having a predetermined size is transported by the third transport roller 63 and the fourth transport roller 64, and the left and right edges of the recycled paper 7 are lifted by the seating member 69. The paper is discharged to the paper receiving unit 84. As a result, the recycled paper 7 can be sent out to the paper receiving portion 84 with the waist in a relaxed state, and the recycled paper 7 can be stacked and placed in the paper storage box 70 in a state where the recycled paper 7 is ready.

Since the slitter 52 is provided downstream of the cutter 51 in the transport direction of the strip paper 65 as described above, the size of the end material 49 generated by cutting the strip paper 65 is determined by the transport direction of the cutter 51 by cutting. It can be suppressed to a length or less. Therefore, unlike the case where the arrangement of the cutter and the slitter is reversed, the end material generated by the cutting is not very elongated, bulky, and difficult to handle.

Even when the conveyance by the first conveyance unit 44 and the second conveyance unit 45 is stopped for cutting by the cutter 51, the conveyance belt 342 of the dryer unit 34 is not stopped and the belt 65 is continuously formed on the finishing unit 4. To continue to supply. As a result, as shown in FIG. 8, the belt-like paper 65 has the belt-like paper 65 sandwiched between the conveyance belt 342 and the pressing roller 36 and the first conveyance roller 61 and the first pressing roller 76. Loosening between the parts and causing wrinkles.

Accordingly, the first transport unit high-speed transport unit 94 sets the transport speed of the first transport unit 44 to the transport of the transport belt 342 of the dryer unit 34 immediately after resuming transport of the first transport unit 44 after cutting by the cutter 51. Control is performed so that the belt 65 is transported at a speed higher than the speed, and the slack belt 65 is transported quickly. When the control by the first transport unit high-speed transport unit 94 is performed, the slack of the belt-shaped paper 65 can be easily eliminated.

The second transport unit high-speed transport unit 95 increases the transport speed of the second transport unit 45 at the same timing as the first transport unit high-speed transport unit 94 starts the high-speed travel of the first transport unit 44. At that time, it is assumed that the belt-like paper 65, the cut paper piece 66, and the recycled paper 7 are transported at a speed higher than the high-speed transport speed of the first transport unit. As a result, even when the first transport unit high-speed transport unit 94 transports the first transport unit 44 at a speed higher than that of the transport belt 342, the smooth transport of the belt-shaped paper 65 is not hindered. Smooth conveyance is possible without causing a paper jam or the like. In this state of high speed conveyance, the left and right side edges of the cut paper piece 66 are cut between the second transfer roller 62 and the third transfer roller 63 by the slitter 52 and discharged to the paper receiving portion 84.

The skew correction unit 92 operates the presser roller lifting and lowering unit 87 to operate the first presser roller 76 when the belt 65 is transported to the installation position of the cutting unit 43 in a state where it is inclined to the left or right from the transport direction in plan view. Is raised from the state in which the belt-like paper 65 is sandwiched, and is returned to the original transport direction sandwiched by the transport belt 342 and the pressing roller 36 of the dryer section 34.

It is desirable that the skew correction by the skew correction unit 92 is instantaneously performed immediately after the cutting by the cutter 51 and before the conveyance of the first conveyance unit 44 is resumed. By doing so, there is a problem when other processing is performed without the belt 65 being sandwiched by the first transport roller 61 and the first presser roller 76, that is, the belt 65 in the first transport unit 44. The skew of the belt 65 can be corrected without hindering smooth conveyance, cutting failure of the cutter 51, shift of the cutting portion, or the like. Further, when the first transfer unit 44 is accelerated by the first transfer unit high-speed transfer means 94, the acceleration is not reduced.

The skew correction may be performed every time the conveyance of the first conveyance unit 44 is stopped for cutting by the cutter 51, or after the stop for cutting by the cutter 51 is performed a predetermined number of times. It may be performed intermittently. Furthermore, although not shown in the drawings, a detecting means for detecting the skew of the strip paper 65 such as a light sensor installed outside the left and right side edges of the strip paper 65 is provided, and the skew detection means serves as the strip paper. The skew correction may be performed when the skew is detected.

The front edge cutting control means 97 is within a predetermined range set in advance from the front edge of the belt 65 before the cutter 51 cuts the size of the recycled paper 7 inputted in advance by the recycled paper size input means 81. The cutter lifting / lowering means 53 is actuated to raise and lower the cutter 51 so as to repeatedly cut the recycled paper 7 to be smaller than the size of the recycled paper 7 to control the cutting of the belt 65.

Thereby, the paper making by the normal paper making unit 3 is difficult to stabilize, and it is possible to prevent the belt-like paper 65 within a predetermined range from the front end portion having relatively poor paper quality from being discharged as the recycled paper 7 to the paper receiving unit 84. The quality of the paper manufactured as the recycled paper 7 can be kept high. Further, by cutting a predetermined range of paper from the front end of the belt-like paper 65 into a small size, the cut off end material 49 can be easily returned to the pulper 18 as a used paper material and used again by the pulper 18. Disaggregation can be processed in a short time.

The sorting control means 93 is input to the sorting number input means 82 so that the obtained recycled paper 7 can be easily sorted by a predetermined number when cutting to a predetermined size input in advance by the recycled paper size input means 81. Control is performed so that the predetermined number of recycled sheets 7 input in advance are cut to a size slightly larger than the size of the other recycled sheets 7. As a result, the obtained recycled paper 7 can be easily divided into a predetermined number of sheets, and when the recycled paper 7 is distributed to each department in the company, it can be easily divided into the predetermined number of sheets. It is possible to reduce the burden.

The dimension change control means 96 is used to change the size of the recycled paper 7 input by the recycled paper size input means 81 when the user inputs to change the size of the recycled paper 7 during the operation of the used paper recycling processing apparatus 100. Control is performed to change the size of the recycled paper 7 obtained while the belt 65 is continuously supplied from the transport belt 342 of the dryer section 34 to the cutting device C without stopping the operation.

That is, for example, let us consider a case where the recycled paper size input means 81 has an input for changing the size of the recycled paper 7 from A4 size to A3 size. The distance between the slitters 52 is set to the length (297 mm) on the long side of the A4 size, and the length of the belt 65 in the conveying direction, that is, after cutting by the cutter 51 until cutting by the next cutter 51 is performed. It is assumed that the length in which the belt-like paper 65 is conveyed is the length (210 mm) on the short side of the A4 size.

In this case, the dimension change control means 96 performs control to change the timing of lowering the cutter 51 by the cutter lifting / lowering means 53 so as to cut the length in the conveyance direction from 210 mm to 420 mm which is doubled. Thereby, the obtained recycled paper 7 can be changed from A4 size to A3 size.

Further, suppose that the recycled paper size input means 81 has an input for changing the size of the recycled paper 7 from the A4 size to the B4 size. Similarly to the above, it is assumed that the distance between the slitters 52 is set to the length on the long side of the A4 size, and the transport direction length of the belt 65 is the length on the short side of the A4 size. The dimension change control unit 96 controls the second transport unit so that the transport speed of the second transport unit is higher than the transport speed of the first transport unit 44 immediately after the cutting along the width direction of the belt-shaped paper 65 by the cutter 51, and the second The left and right side edges of the cutting paper piece 66 conveyed from the conveying roller 62 to the third conveying roller 63 are quickly cut by the slitter 52.

Thereafter, the slitter feeding device 88 is operated to move both slitters 52 from the center in the width direction of the belt 65 so as to approach along the slitter guide rod 71, and the distance between the slitters 52 is set to a long size of A4 size. The length is changed from the length on the side (297 mm) to the length on the short side of B4 size (257 mm). Then, control is performed to change the timing of lowering the cutter 51 so that the length in the transport direction is cut from the length on the short side of A4 size (210 mm) to the length on the long side of B4 size (364 mm). Thereby, the obtained recycled paper 7 can be changed from A4 size to B4 size. Other size changes can be controlled as well.

Thereby, the size of the recycled paper 7 obtained without stopping the operation of the used paper recycling processor 100 can be changed. Therefore, in the middle of any of the steps of disaggregation, deinking, and papermaking, the recycled paper size processing unit 100 is stopped because the input of the recycled paper size input unit 81 changes the size of the obtained recycled paper 7. The resulting malfunction can be avoided. If the used paper recycling apparatus 100 is stopped during operation, there is not only a risk that good quality recycled paper cannot be obtained due to various reasons such as drying of used paper pulp or deinked pulp even if the operation is restarted. Problems such as clogging of pipes and pumps may occur. Further, the recycled paper 7 that is the final product may not be manufactured, and it is considered that waste paper pulp liquid, deinked pulp liquid, wet paper, etc. in the middle of each process must be discarded. However, such a problem can be avoided by the dimension change control means 96.

In the case where a cutting blade is further cut by the slitter 52 and further provided with a cutting blade, the end material 49 further finely cut by the cutting blade is guided downward by the guide 68 and stored in the end material storage box. The end material 49 in the end material storage box is returned to the used paper pulp liquid manufacturing unit 1 as shown in FIG.

As described above, since the guide 68 that guides the end material 49 generated by cutting by the slitter 52 to the lower side from the conveying surface of the belt 65 is provided, the end material 49 can be easily moved downward without being scattered inside the cutting device C. It is possible to guide to the end material storage box.

Further, when the cutting blade and the cutting blade control means are provided, the end material 49 generated by the cutting of the slitter 52 can be further finely cut, so that the bulk of the end material 49 in the end material storage box is increased. Furthermore, the disaggregation process can be facilitated when the end material 49 in the end material storage box is returned to the pulper 18 as a used paper material, and the disaggregation can be completed in a short time. Can do.

The recycled paper 7 discharged to the paper receiver 84 is stored in the paper storage box 70. As shown in FIG. 6, when two or more paper storage boxes 70 are placed, it is possible to perform sorting in which a predetermined number of recycled papers 7 are stored in each paper storage box 70. That is, when a predetermined number of recycled papers 7 are stored in a certain paper storage box 70, the lifting platform 85 is moved up and down by the lifting means so that the subsequent recycled paper 7 can be stored in another paper storage box 70. As a result, it is possible to perform sorting in which a predetermined number of recycled papers 7 are stored in each paper storage box 70.

When the paper storage boxes 70 having different sizes are stacked and placed, the paper storage box 70 can be changed according to the size of the recycled paper 7. At that time, a detecting means for detecting the size of the recycled paper 7 is provided in the vicinity of the fourth transport roller 64 and the like, and a paper storage box 70 having a size suitable for the size detected by the detecting means is provided at the discharge location of the recycled paper 7. The elevator 84 is moved up and down by the lifting means so as to be positioned.

In each of the above embodiments, the left and right slitters 52 are configured to move so as to approach and separate in synchronization with each other. However, the present invention is not limited thereto, and each slitter 52 is configured to move individually to a predetermined position. Also good. In addition, the slitter 52 is provided not only on the cut paper piece 66 generated by cutting the belt 65 by the cutter 51 but also on the band 65 before being cut into the cut paper piece 66 by being provided close to the cutter 51. In some cases, the slitter 52 may cut the sheet. However, by providing the slitter on the downstream side that is separated from the cutter by a considerable distance, the strip paper may not be cut and only the cut paper piece may be cut.

In addition, although one set of the optical sensors constituting the front end detection means 59 is disposed at the substantially central portion in the width direction of the belt 65, two sets may be provided at both ends in the width direction. Further, the front end detection means 59 is provided between the receiving roller 58 of the first transport unit 44 and the first transport roller 61 of the cutting device C, but the front end of the strip 65 is a predetermined length upstream of the cutter installation position. As long as it can be detected that the paper has been conveyed to the side, it may be provided at a location other than the cutting device C, such as a wire portion or a dryer portion of the paper making portion.

In addition, the front end cutting control means 97 is provided to cut the front end of the belt-like paper 65 more finely than the size of the recycled paper 7. Similarly to this, a predetermined range from the rear edge of the belt-like paper 65 is provided. It is also possible to control the inside so that it is cut to be smaller than the size of the recycled paper without being discharged as recycled paper 7. That is, within the predetermined range from the rear end of the belt-like paper, the amount of waste paper pulp liquid supplied from the head box to the paper making wire gradually becomes insufficient, so that the paper making by the paper making portion is stable and is not relatively good in paper quality. . Therefore, as in the case of the front end cutting control means, it is also possible to perform control to cut a predetermined range from the rear end of the belt-like paper to a small size.

Further, it is also possible to control to cut to a smaller size than the size of the recycled paper when a paper quality detection sensor detects a place where the paper making state is not stable other than the front end portion or the rear end portion of the belt-like paper. . In this case, the paper quality detection sensor is provided immediately before the cutter installation position such as the installation position of the front end detection means 59 shown in FIG. Then, it is detected that it is not suitable to finish as a recycled paper, such as a portion lacking in the left and right side edges of the belt-like paper, a place where the paper thickness is thin, or a place where the formation is not stable.

C Cutting device 42 Conveying section 49 End material 51 Cutter 52 Slitter 65 Strip paper 68 Guide

Claims (4)

A cutting device of a used paper recycling apparatus for cutting a belt-like paper obtained by papermaking a waste paper pulp solution obtained by breaking up a used paper into a recycled paper of a predetermined size,
A transport unit for transporting the belt-shaped paper along the longitudinal direction;
A cutter that extends in the width direction of the belt and cuts the belt in a direction crossing the transport direction;
A slitter that cuts at least a side edge portion of a cut paper piece generated by cutting the belt-like paper by the cutter along the transport direction;
An end material storage box for storing the end material generated by cutting is provided,
The cutting apparatus of the used paper recycling apparatus, wherein the slitter is provided on the downstream side in the transport direction from the cutter. 2. The cutting apparatus of the used paper recycling apparatus according to claim 1, further comprising a guide for guiding the end material generated by cutting with a slitter to a lower side than a conveying surface of the belt-like paper. A cutting blade for further finely cutting the edge material produced by cutting the side edge of the belt-like paper with a slitter;
The cutting apparatus of the used paper recycling apparatus according to claim 2 or 3, further comprising a cutting blade control means for controlling the cutting blade. A cutting method of a used paper recycling apparatus for cutting a belt-like paper obtained by papermaking a waste paper pulp solution obtained by breaking up used paper, into a recycled paper of a predetermined size,
Transport the strip along the longitudinal direction,
After cutting the strip in the direction crossing the transport direction by a cutter extending in the width direction of the strip,
Cutting the side edge of the cut paper piece produced by cutting the band paper and / or the band paper with the cutter along the conveying direction with a slitter, cut into recycled paper,
A cutting method for a used paper recycling apparatus, wherein a cutting material generated by cutting is stored in a cutting material storage box.

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