JP5591093B2 - Paper feeder - Google Patents

Description

  The present invention relates to a paper feeding device that supplies paper.

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

JP 2008-133559 A

However, in the technique described in the above prior art document, there is a difficulty in conveying the shredded paper piece, and an efficient conveying means is desired.
SUMMARY An advantage of some aspects of the invention is that it provides a paper feeding device that can efficiently convey shredded paper pieces.

  In order to solve the above-described problem, a paper feeding device according to the present invention includes a weighing unit that measures the amount of input paper material, and a paper feeding unit that conveys the paper material to the weighing unit by an air flow. A tray that covers the space between the tray that receives the paper material, a measuring unit that measures the weight of the paper material on the tray, an input unit that discharges the paper material on the tray, and the discharge port of the paper feeding unit and the tray And the cover has an exhaust port.

  With the above-described configuration, the paper material is conveyed using an air flow as a conveying means, whereby the chopped paper pieces can be efficiently conveyed. Further, the paper material discharged from the discharge port of the paper feed unit passes through the space area covered with the cover, and reaches the tray without being scattered around. In addition, the air flow discharged from the discharge port of the paper feed unit flows out of the exhaust port of the cover, stabilizing the air flow and constantly exerting a stable force on the tray. It can be suppressed that it becomes a factor.

In the paper feeding device of the present invention, the cover has a filter having air permeability at the exhaust port.
With the configuration described above, it is possible to prevent the paper material from jumping out of the measuring section from the exhaust port, so that the exhaust port can be set to an arbitrary size, and the air flow resistance of the exhaust port is suppressed to reduce the air. The influence of the flow on the measuring unit can be reduced, and the accuracy of measuring the amount of paper is increased.

In the paper feeding device of the present invention, the cover has a telescopic structure.
With the above-described configuration, when the maintenance of the measuring unit and other devices is performed, the work space can be expanded and workability can be improved and the work can be easily performed by reducing the cover.

  As described above, according to the present invention, the paper material is conveyed using the air flow as the conveying means, whereby the shredded paper piece can be efficiently conveyed, and the air outlet is provided by providing the cover having the exhaust port. Paper material transported in a stream can be reliably delivered to the weighing section, and accurate weighing can be performed while suppressing the influence of the air flow on the weighing.

Schematic diagram showing a paper feeder in an embodiment of the present invention The perspective view which shows the paper feeder in the embodiment The perspective view which shows the principal part of the paper feeder in the same embodiment The perspective view which showed the principal part of the paper feeder in the embodiment, and reduced the cover Schematic diagram showing a paper feeder in the same embodiment

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 5, the used paper recycling processing apparatus has a plurality of processing units constituting a used paper recycling processing system. The processing unit includes a paper feeding device 51, a pulper unit 59, a storage tank unit 60, a deinking unit. A section 61, a paper making section 63, a drying section 64, a finishing section 65, a white water tank section 100, and a wastewater treatment tank section 101.

  As shown in FIG. 1, the paper feeding device 51 and the pulper unit 59 include a pulper device 110 that separates used paper, a paper material storage device 120 that stores shredded paper pieces to be supplied to the pulper device 110, and a paper material storage device. The shredder device 130 supplies the shredded paper pieces to the device 120.

  The storage tank part 60 stores the pulp suspension obtained in the pulper part 59, and has a stirring device inside. The deinking unit 61 prepares deinked pulp by deinking the pulp suspension stored in the storage tank unit 60. The paper making unit 63 makes wet paper from the deinked pulp suspension, and includes a paper making wire part and a head box part.

  The drying unit 64 has a drying roller with a built-in heating device, and dries the dehydrated wet paper with the drying roller. The wastewater treatment tank unit 101 processes the deinking waste liquid flowing from the deinking unit 11, removes fibers, ink, and toner with a filter, neutralizes by adding chemicals, and drains it into the sewage pipe 103 of public sewage. Treat to possible water quality.

  As shown in FIG. 1, a pulper device 110 forming a pulper unit 59 disaggregates recycled paper material of recycled raw materials into fibers, that is, recycled pulp, in a solvent such as clean water and white water. A tank body 111 to be charged, a stirring blade (not shown) rotating inside the tank body 111, and a driving means (not shown) such as a motor for rotationally driving the stirring blade are provided. The tank body 111 communicates with a transfer system 112 for transferring the recycled pulp-containing liquid to the next process.

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

  The paper material storage device 120 stores a piece of used paper shredded paper as the paper material 7 to be supplied to the pulper device 110. The paper material storage device 120 measures the input amount of the paper material 7 to be input to the pulper device 110, and the paper And a paper feed unit 12 for supplying the material to the weighing unit 11.

  The weighing unit 11 includes a receiving tray 201 that receives the paper material, a measuring unit 202 that measures the weight of the paper material on the receiving tray 201, an input unit 203 that inputs the paper material 7 on the receiving plate into the pulper device 110, and a paper feeding unit. The cover 204 which covers the space between the 12 outlets and the tray 201 is supported, and the cover 204, the tray 201 and the loading unit 203 are supported by the measuring unit 202 installed in the apparatus structural material. The charging unit 203 forms a part of the bottom of the tray 201 and is provided so as to be swingable.

  In the present embodiment, the measurement unit 202 includes a load cell, and the load of the cover 204, the tray 201, the loading unit 203, and the paper material 7 is suspended on the load cell, so that the accuracy during measurement is increased. However, the measuring unit 202 can be provided under the tray 201 to measure only the load of the paper material 7. Further, a belt conveyor can be adopted as the input unit 203.

  The cover 204 has a telescopic structure including a fixed portion 205 supported by the measuring portion 202 and a movable portion 206 supported by the fixed portion 205 so as to be able to approach and separate from the pulper device 110. 207, and the exhaust port 207 has a filter 208 having air permeability.

  In the present embodiment, the exhaust port 207 is formed on one side surface of the fixed unit 205 constituting the upper portion of the cover 204 in the vicinity of the discharge port of the paper feeding unit 12, but may be formed on the movable unit 206 of the cover 204. It is also possible to provide the cover 204 on all sides.

  In addition, the size of the exhaust port 207 is set to about one fifth to one third of the size of one side surface of the cover 204 including the fixed portion 205 and the movable portion 206, and the size of the entire side surface of the cover 204. In this case, it is about 1/20 to 1/8.

  The filter 208 is made of a mesh sheet or the like, and may be an exhaust port 207 in which the entire periphery of the fixing portion 205 of the cover 204 is covered with the filter 208. The mesh sheet preferably has a roughness of 20 to 60 mesh.

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

  The airflow 21 flows into the discharge cyclone 20 together with the paper material 7 through the first duct 17, and a part of the air circulates through the third duct 24 without being discharged from the discharge port of the discharge cyclone 20. When air flows from the discharge cyclone 20 into the third duct 24, the air around the pulper device 110 is sucked.

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

  The paper amount detection unit 31 includes an upper sensor 311 that detects an upper limit set amount and a lower sensor 312 that detects a lower limit set amount. The upper sensor 311 and the lower sensor 312 include a photoelectric switch or the like.

  The operation of the above configuration will be described. In the paper feeding device 51 and the pulper unit 59, the shredded paper piece of the paper material 7 stored in the storage container 29 of the paper material storage device 120 is sent to the measuring unit 11 by the paper feeding unit 12, and a unit of batch processing operation in the pulper device 110. A paper amount corresponding to the amount is supplied to the pulper device 110. When the batch processing operation is finished in the pulper device 110, the recycled pulp is sent out through the transfer system 112 and sent to the deinking unit 61 through the storage tank unit 61. By repeating this operation, the used paper recycling process is continuously operated.

  In the paper supply unit 12, the paper material stored in the paper material storage unit 16 is transferred from the first duct 17 to the measuring unit 11 through the discharge cyclone 20. At this time, if the cover 204 is not provided, a part of the paper material 7 may be scattered, but the paper material 7 discharged from the discharge port of the discharge cyclone 20 passes through the space area covered with the cover 204. The paper material 7 reaches the tray 201 without being scattered around. Further, since the air flow discharged from the discharge port of the discharge cyclone 20 flows out from the discharge port 207 of the cover 204, the air flow becomes stable and constantly exerts a stable force on the tray 201. Can be a factor that hinders measurement.

  Further, since the filter 208 can prevent the paper material 7 from jumping out of the measuring unit 11 from the exhaust port 207, the exhaust port 207 can be set to an arbitrary size, and the ventilation resistance of the exhaust port 207 is suppressed. Thus, the influence of the air flow on the measuring unit 11 can be reduced, and the accuracy of measuring the amount of paper is increased. Further, since the cover 204 has a telescopic structure in which the movable portion 206 can be moved toward and away from the pulper device 110, the work space can be reduced by reducing the cover 204 when maintenance of the measuring unit 11 and the pulper device 110 is performed. The workability is improved and work can be easily performed.

  Further, when air flows into the third duct 24 from the discharge cyclone 20, the air around the pulper device 110 is sucked, so that static electricity generated by friction of the paper material 7 or the like in the paper material storage unit 16 or the transfer path is absorbed. The paper material 7 can be efficiently conveyed.

7 Paper Material 11 Metering Unit 12 Paper Feeding Unit 16 Paper Material Storage Unit 17 First Duct 18 Delivery Device 19 Dispersion Cyclone 20 Discharge Cyclone 21 Airflow 22 Blower 23 Second Duct 24 Third Duct 29 Storage Container 30 Stirrer 31 Paper Quantity detection unit 51 Paper feeding device 59 Pulper unit 60 Storage tank unit 61 Deinking unit 63 Paper making unit 65 Finishing unit 101 Waste water treatment tank unit 110 Pulper device 111 Tank body 112 Transfer system 120 Paper material storage device 130 Shredder device 201 Receptacle 202 Measurement Unit 203 input unit 204 cover 205 fixed unit 206 movable unit 207 exhaust port 208 filter 311 upper sensor 312 lower sensor

Claims (3)

  Equipped with a weighing unit that measures the input amount of paper material, and a paper feeding unit that conveys the paper material to the weighing unit by air flow. The weighing unit measures the weight of the tray that receives the paper material and the paper material on the tray. A sheet feeding unit, a sheet feeding unit for discharging a paper material on a tray, a cover for covering a space between a discharge port of the sheet feeding unit and the tray, and the cover having an exhaust port. apparatus.   The sheet feeding device according to claim 1, wherein the cover includes a filter having air permeability at an exhaust port.   The sheet feeding device according to claim 1, wherein the cover has a telescopic structure.

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