JP5001901B2 - Document shredder weighing mechanism - Google Patents

Description

  The present invention relates to an office-installed type used paper recycling apparatus for shredded paper, including a pulper that breaks used paper such as office documents into a recycled pulp suspension and a paper machine that produces recycled paper from the recycled pulp suspension. This relates to a document shredding waste measuring mechanism for used paper recycling apparatus used in the present invention.

  In view of the fact that document shredder has not been sufficiently recycled in the past, if the document shredder is recycled to relatively low quality recycled paper such as toilet paper, the waste paper recycling process can be omitted and an apparatus By reducing the size and simplification of documents, it is possible to recycle document shredded waste in units of organizations such as companies, government offices, associations, housing estates, or local governments, saving resources and energy, and collecting used paper In order to reduce the time and labor required for the paper, a step of separating the waste paper shredded by a document shredding machine with a pulper equipped with a stirring means into a regenerated pulp, and a chest in which the regenerated pulp is always gently stirred And storing the regenerated pulp stored in an injection device having a pressure source and an injection hole, injecting the regenerated pulp from the injection device, and enabling rotation via a pair of rollers Document shredding comprising the steps of: spraying the fiber sheet of a papermaking apparatus having an endless fiber sheet attached thereto to form the recycled pulp into a sheet, and drying the sheet-shaped recycled pulp with a drying roller to make paper A method for recycling waste paper has been proposed (see Patent Document 1).

  In addition, the present inventors have proposed a waste paper recycling apparatus for shredded documents as shown in Patent Document 2 in order to solve various problems in putting the above proposal into practical use. Also, a hopper device with a shredding mechanism used in a waste paper recycling apparatus for shredded waste paper, including a pulper that disaggregates waste paper to make a recycled pulp suspension and a paper machine that makes recycled paper from the recycled pulp suspension. A first input port for inputting a shredded unprocessed document, a document shredding processing mechanism for shredding the shredded unprocessed document into document shredding waste, A hopper device with a shredding mechanism including a discharge port for discharging document shredding waste has already been proposed (Japanese Patent Application No. 2006-319793).

  In supplying the document shredder from the hopper device as described above to the pulper device, it is important to keep the concentration in the pulper device constant. This is because recycled paper with a uniform thickness cannot be produced unless the density is constant.

The concentration in the pulper device is determined by the amount of document shredder supplied and the amount of water, but it is difficult to accurately measure the amount of document shredder.
JP 10-317290 A JP 2006-169710 A

  The present invention has been made in view of the above prior art, and is a document shredding waste measuring mechanism used in an extremely small and compact waste paper recycling apparatus for document shredding waste with a limited installation location. It is an object of the present invention to provide a document shredding waste weighing mechanism capable of accurately weighing and supplying waste.

  The document shredding waste metering mechanism according to the present invention is a waste paper recycling apparatus for document shredding waste including a pulper that breaks waste paper into a recycled pulp suspension and a paper machine that makes recycled paper from the recycled pulp suspension. A document shredding waste measuring mechanism used, comprising a housing part having a placement surface for housing the document shredder and a discharge port for discharging the document shredder housed in the housing part A receiving means; a weighing means for weighing a predetermined amount of the document shredded waste contained in the holding means; and the holding means is pivotally attached to the end of the weighing means in the vicinity of the lower end of the receiving means. A shaft attaching means for swaging, and a motor-driven eccentric cam means for rotating the accommodating means about the vicinity of the lower end portion of the accommodating means, and when the weighing means detects a predetermined weight, the eccentricity The cam means pushes up the storage means and the storage The accommodation means is rotated about the vicinity of the lower surface end of the step to make the placement surface an inclined surface, and the document shredder slides down the inclined surface to be accommodated in the accommodation portion. The document shredder having a predetermined weight is discharged from the discharge port.

  As the storage means, a dish member having a U-shaped cross section is preferable, and in order to appropriately receive the document shredder supplied from the hopper and prevent the shredder of the document, the upper peripheral edge of the dish member It is further preferable to provide an inclined receiving blade plate member at the portion.

  As the weighing means, a load meter such as an electronic balance is preferably used. Either an electromagnetic type or a load cell (strain gauge) type can be applied to the electronic balance, but a load cell type weighing means is particularly preferable.

  In addition, a hinge member is preferably used as the shaft attaching means. What is necessary is just to set it as the structure which pivotally mounts the lower surface edge part vicinity of the said accommodating means to the said balance means edge part via a hinge member.

  As the eccentric cam means, a rotating shaft is provided so as to cross the lower side of the accommodating means pivotally mounted, and a disc is attached to the rotating shaft so as to be shifted from the center of rotation to form an eccentric cam. It is preferable that the rotation shaft of the cam is rotationally driven by a motor.

  In this way, when the weighing means detects a predetermined weight set in advance, the eccentric cam means pushes up the accommodating means, and the accommodating means is rotated around the end of the accommodating means. The surface is an inclined surface, and the document shredded scraps slide down the inclined surface, whereby the document shredded waste of a predetermined weight accommodated in the accommodating portion is discharged from the discharge port. Then, when the eccentric cam means rotates and returns to the original position, the accommodating means is returned to the original position, and the document shredder is again measured.

  The predetermined weight to be set in advance may be set according to the desired concentration of the pulper device. For example, a predetermined weight can be set between 20 g and 40 g.

  Further, when the eccentric cam means pushes up the storage means, it contacts the back surface of the placement surface, and when detecting the weight of the document shredder, it is not contacted with the back surface of the placement surface. It is preferable to provide a limit switch for detecting that the means is in a non-contact state on the back surface of the mounting surface.

  This is because, since the eccentric cam means cannot accurately weigh the document shredder in a state where the eccentric cam means is in contact with the back surface of the placement surface, such a limit switch is provided so that the eccentric cam means The document shredder may be weighed only while it is in contact with the limit switch. That is, when the eccentric cam means that has been in contact with the limit switch leaves the limit switch and makes a full rotation while pushing up the accommodating means and comes back in contact with the limit switch again, a so-called zero reset is performed and weight measurement is performed. What is necessary is just to comprise so.

  Furthermore, it is preferable to further provide a stopper member for preventing the center of gravity of the storage means from moving toward the discharge port side with respect to the rotation fulcrum when the storage means is rotated.

  Providing such a stopper member causes the center of gravity of the housing means to be closer to the discharge port than the rotation fulcrum due to external vibration or the like, and the housing means does not return to the original position again. There is an advantage that there is no risk of trouble.

  ADVANTAGE OF THE INVENTION According to this invention, it is a document shredding waste measuring mechanism used for the waste paper recycling apparatus for a very small and compact document shredding waste with a restriction | limiting installation place, Comprising: Accurate measurement and supply of document shredding waste are possible It is possible to provide a document shredding waste weighing mechanism that can be provided.

  Therefore, by using the waste paper recycling apparatus for document shredding waste incorporating the document shredding waste measuring mechanism of the present invention, the recycling of the document shredding waste can be performed for each organizational unit such as a company, government office, union, housing complex, or local public entity. This makes it possible to recycle document shredded waste that has been incinerated or landfilled, and has the great effect of saving resources and energy, reducing the time required for collecting used paper, and reducing labor.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. However, the illustrated examples are shown by way of example, and it goes without saying that various modifications can be made without departing from the technical idea of the present invention. .

  1 is a front perspective view showing a state in which the document shredding waste metering mechanism of the present invention is incorporated in a part of a used paper recycling apparatus for document shredding waste, FIG. 2 is a front view of FIG. 1, and FIG. FIG. 4 is a rear perspective view of the document shredder weighing mechanism of the present invention, FIG. 5 is a schematic right side view of the document shredder weighing mechanism, and FIG. FIG. 7 shows a state in which the eccentric cam means at the position shown in FIG. 6 rotates and comes into contact with the accommodating means so that the mounting surface becomes an inclined surface. FIG. 8 is a schematic view showing a state in which the eccentric cam means at the position of FIG. 7 is further rotated, and FIG. 9 is a schematic view showing a state in which the eccentric cam means at the position of FIG. 8 is further rotated. .

  1 to 9, reference numeral 10 denotes a document shredder measuring mechanism according to the present invention. The document shredding waste metering mechanism 10 of the present invention is a waste paper recycling apparatus for document shredding waste, including a pulper that breaks waste paper into a recycled pulp suspension and a paper machine that makes recycled paper from the recycled pulp suspension. 1 is a document shredding waste metering mechanism used in the above, and includes an accommodating portion 14 having a placement surface 12 for accommodating document shredded waste and a waste for discharging document shredded waste accommodated in the accommodating portion 14. An accommodating means 18 having an outlet 16; a weighing means 20 for weighing a predetermined amount of document shredded waste accommodated in the accommodating means 18; and the weighing means end 22 in the vicinity of the lower surface end A of the accommodating means 18. A shaft mounting means 24 for pivotally mounting the receiving means 18 on the shaft, and a motor-driven eccentric cam means for rotating the receiving means 18 around the lower surface end vicinity A of the receiving means 18 as a fulcrum. 26, and the weighing means 20 When the predetermined weight is detected, the eccentric cam means 26 pushes up the accommodating means 18, and the accommodating means 18 is rotated around the lower surface end vicinity A of the accommodating means 18, whereby the mounting surface 12 is inclined. When the document shredded waste slides down the inclined surface 12a, the document shredded waste of a predetermined weight stored in the storage portion 14 is discharged from the discharge port 16.

  1 to 3, reference numeral 28 denotes a hopper device into which document shredded waste is thrown, and reference numeral 30 denotes document shredded waste that has been weighed to a predetermined weight by the document shredder waste weighing mechanism of the present invention. Is a pulper device. As long as this hopper device 28 has a function of supplying the document shredder waste to the document shredder waste weighing mechanism 10, its configuration is not particularly limited. A hopper device with a shredding mechanism for shredding unchopped paper or the like may be used, or a hopper device that throws document shredded material shredded in advance with a shredder or the like may be used. For example, a hopper device described in Japanese Patent Application No. 2006-319793 can be used.

  In addition, as for the pulper device 30, as long as it has a function of mixing and stirring the document shredded waste weighed with a predetermined amount by the document shredder weighing mechanism 10 according to the present invention with water or the like to make a recycled pulp suspension, There is no particular limitation on its configuration. For example, a pulper device described in Japanese Patent Application No. 2006-319793 can be used.

  In the illustrated example, a plate member 18 a having a U-shaped cross section is used as the accommodating means 18. Further, in order to appropriately receive the document shredded waste supplied from the hopper device 28 and prevent the shredded shredder from being scattered, an inclined receiving blade plate member 32a, More preferably, 32b is provided.

  As the weighing means 20, a load cell type electronic balance (manufactured by A & D Co., Ltd.) 20a was used.

  Further, as shown in FIG. 4, a hinge member 24a is used as the shaft attaching means 24, and the end portion of the lower surface 34 of the accommodating means 18 is connected to the end of the weighing means 20 via the hinge member 24a. It is pivotally attached to the part.

  As the eccentric cam means 26, a rotating shaft 36 is provided so as to cross the lower side of the dish member 18a pivotally mounted by a hinge member 24a, and a disk 38 is attached to the rotating shaft 36 by the rotating shaft 36. The eccentric cam 26a is attached by being shifted from the center of rotation. The rotating shaft 36 of the eccentric cam 26a is configured to be rotationally driven by a motor (not shown).

  Thus, when the load cell type electronic balance 20a detects a predetermined weight set in advance, the eccentric cam 26a pushes up the dish member 18a, and the dish member 18a is rotated around the end of the dish member 18a. The surface 12 is an inclined surface 12 a, and the document shredded waste slides down the inclined surface 12 a, so that the predetermined amount of document shredded waste stored in the storage portion 14 is discharged from the discharge port 16. When the eccentric cam 26a rotates and returns to the original position again, the plate member 18a is returned to the original position again, and the document shredder is again measured.

  The predetermined weight to be set in advance can be set according to the desired concentration of the pulper device. For example, the predetermined weight may be set between 20 g and 40 g.

  Further, when the eccentric cam 26a pushes up the plate member 18a, it contacts the back surface of the placing surface 12, and when detecting the weight of the document shredded waste, it is not contacted with the back surface of the placing surface 12, and the eccentric cam 26a is placed. A limit switch 40 for detecting a non-contact state on the back surface of the mounting surface 12 is provided. The limit switch 40 includes a leaf spring member 42, and detects the contact / non-contact state when the eccentric cam 26a is in contact with or non-contact with the leaf spring member 42. As the limit switch 40, a known switch of a type that detects contact may be used. Reference numeral 46 denotes a frame member, to which the load cell type electronic balance 20a, the eccentric cam 26a, and the limit switch 40 are attached.

  When the eccentric cam 26a that has been in contact with the leaf spring member 42 is moved away from the limit switch 40 and makes a full turn while pushing up the plate member 18a, and comes back into contact with the limit switch 40, the weight of the plate member 18a is included. It is configured to perform weight correction after performing zero correction and so-called zero reset.

  Further, when the dish member 18a is rotated, a stopper member 44 is provided so that the center of gravity G of the dish member 18a does not go to the discharge port 16 side with respect to the rotation fulcrum (that is, the rotation shaft 36). (See FIG. 8).

  When such a stopper member 44 is provided, the center of gravity G of the dish member 18a is rotated from the rotation fulcrum (rotating shaft 36) by the vibration of the dish member 18a from the outside (for example, vibration caused by an impact when a person hits). There is also an advantage that there is no possibility of trouble that the plate member 18a is not returned to the original position again due to being moved to the discharge port 16 side.

  Next, the operation of the document shredder weighing mechanism according to the present invention will be described with reference to FIGS.

  In an initial state where the eccentric cam 26a is not in contact with the plate member 18a and is in contact with the limit switch 40, the state shown in FIG. Then, when so-called zero reset is performed in this state, the document shredded waste falls from the hopper device 28 to the storage unit 14, and the weight of the document shredded waste is measured. In the illustrated example, the weight of the document shredder is set to 25 g.

  Then, when the load cell type electronic balance 20a detects 25g set in advance, the eccentric cam 26a located at the position of FIG. 6 rotates to contact the plate member 18a and the mounting surface 12 becomes the inclined surface 12a. And the eccentric cam 26a rotates gradually like FIG. 7, FIG. At this time, the document shredded waste slides down the inclined surface 12 a, whereby the document shredded waste of a predetermined weight accommodated in the accommodating portion 14 is discharged from the discharge port 16 and supplied to the pulper device 30.

  The dish member 18a tilted to the position of FIG. 8 in this manner should gradually return to the original position again (FIG. 6) when the eccentric cam 26a further rotates, and the dish member 18a gradually becomes slanted (FIG. 9). Thus, the plate member 18a is returned to the original position again. Then, the eccentric cam 26a comes into non-contact with the plate member 18a and comes into contact with the limit switch 40. Zero reset is performed again, and the document shredder falls from the hopper device 28 into the accommodating portion 14, and the weight of the document shredder waste. Is measured. In this way, accurate weighing of the document shredder is repeated. The series of operations and controls are automatically performed by a computer (not shown).

  As described above, the document shredding waste measuring mechanism 10 according to the present invention is equipped with a stirring means at the inner bottom of the tank and the tank as shown in FIG. 1, and the used paper shredded by the document shredding machine is disaggregated. Then, it is incorporated into a waste paper recycling apparatus for document shredded waste (see Patent Document 2) consisting of a pulper as a recycled pulp suspension and a paper machine for making recycled paper from the recycled pulp suspension. In the reproduction process in which an unnecessary document is shredded in an office and regenerated as recycled paper in the office, document shredded waste can be accurately measured and supplied.

It is a front perspective view which shows a mode that the document shredding waste measurement mechanism of this invention was integrated in a part of used paper recycling apparatus for document shredding waste. It is a front view of FIG. It is the sectional view on the AA line of FIG. It is a rear perspective view of the document shredder metering mechanism of the present invention. It is a schematic right view of a document shredding waste measurement mechanism. It is the schematic which shows the initial state which the eccentric cam means is non-contacting to an accommodating means, and is contacting the limit switch. It is the schematic which shows the state which the eccentric cam means in the position of FIG. 6 rotated, contacted the accommodating means, and the mounting surface became an inclined surface. It is the schematic which shows the state which the eccentric cam means in the position of FIG. 7 rotated further. It is the schematic which shows the state which the eccentric cam means in the position of FIG. 8 rotated further.

Explanation of symbols

  10: Document shredder metering mechanism, 12: Placement surface, 12a: Inclined surface, 14: Storage section, 16: Discharge port, 18: Storage means, 18a: Plate member, 20: Weighing means, 20a: Load cell type electronic Balance, 22: End of balance means, 24: Axis attachment means, 24a: Hinge member, 26: Motor drive eccentric cam means, 26a: Eccentric cam, 28: Hopper device, 30: Pulper device, 32a, 32b: Blade shape Member: 34: lower surface, 36: rotating shaft, 38: disk, 40: limit switch, 42: leaf spring member, 44: stopper member, 46: frame member, A: near bottom end, G: center of gravity.

Claims (3)

A document shredding waste measuring mechanism used in a waste paper recycling apparatus for shredded waste paper, including a pulper that breaks waste paper into a recycled pulp suspension and a paper machine that makes recycled paper from the recycled pulp suspension. ,
An accommodating means having an accommodating portion having a placement surface for accommodating document shredded waste and a discharge port for discharging the document shredded waste accommodated in the accommodating portion;
A weighing means for weighing a predetermined weight of the document shredded waste housed in the housing means;
A shaft attachment means for pivotally attaching the accommodation means to the end of the scale means near the lower end of the accommodation means;
Motor-driven eccentric cam means for rotating the housing means about the vicinity of the lower surface end of the housing means;
Including
When the weighing means detects a predetermined weight, the motor-driven eccentric cam means pushes up the accommodating means, and the accommodating means is rotated around the vicinity of the lower end of the accommodating means, whereby the mounting surface is inclined. The document shredder weighing mechanism characterized in that the document shredder waste having a predetermined weight accommodated in the accommodating portion is discharged from the discharge port when the document shredder slides down the inclined surface. .   When the eccentric cam means pushes up the storage means, it contacts the back surface of the placement surface, and when the weight of the document shredder is detected, it is not contacted with the back surface of the placement surface, and the eccentric cam means 2. The document shredding waste measuring mechanism according to claim 1, further comprising a limit switch for detecting a non-contact state on the back surface of the placement surface.   2. A stopper member is further provided to prevent the center of gravity of the storage means from moving toward the discharge port side of the rotation fulcrum when the storage means is rotated. 2. Document shredding waste weighing mechanism.

Images