JP6759558B2 - Sheet manufacturing equipment, paper supply equipment, paper shredding equipment - Google Patents

Description

The present invention relates to a sheet manufacturing apparatus, a paper feeding apparatus and a paper shredding apparatus.

Conventionally, a paper recycling device is known in which used paper is thrown from an automatic feeder toward a coarse crusher, the used paper is divided into pieces of paper, the divided pieces of paper are defibrated, and the paper is formed from the defibrated defibrated material. (See, for example, Patent Document 1).
In addition, a paper fastening device such as a staple, which is provided with a cutting device, a feeder slot for passing paper toward the cutting device, and an edge provided at an oblique direction with respect to the feeder slot, is provided. A paper shredding machine that separates from a sheet or several sheets of paper and shreds the paper is known (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2012-144819 Special Table 2013-528481

However, the apparatus according to Patent Document 1 has a problem that, for example, when used paper having a binder such as a metal clip or a stapler needle is put into a crusher, the crushing blade of the crusher is damaged. there were.
Further, in the paper shredding machine according to Patent Document 2, since there is only one edge in the direction in which the paper is passed through the feeder slot, for example, the size and shape of the binder attached to the paper, etc. Further, there is a problem that the binder cannot be removed depending on the position where the binder is attached to the paper.

The present invention has been made to solve at least a part of the above-mentioned problems, and can be realized as the following forms or application examples.

[Application Example 1] The sheet manufacturing apparatus according to this application example is roughened by a loading portion for loading a raw material containing fibers, a coarsely crushed portion for coarsely crushing the raw material supplied from the loading portion, and the coarsely crushed portion. For removing a molding part that forms a sheet using the crushed coarsely crushed pieces of the raw material, a transporting part that conveys the raw material from the loading part to the coarsely crushed part, and a binder that bundles the raw material. A plurality of removing portions are provided so as to overlap in the transporting direction of the raw material along the transporting path of the raw material from the loading portion to the coarsely crushed portion. ..

According to this configuration, by providing a plurality of removing portions so as to overlap each other in the transport direction of the raw material, the chances of removing the binder attached to the raw material are increased, and the binder removal rate from the raw material can be improved. As a result, damage to the coarsely crushed portion due to the binder can be reduced. The binder is, for example, a clip that is thicker than paper and is made of a resin material (for example, a resin-based clip or a cellulose-based clip), a metal clip, or the like, which is attached to collect used raw paper. Stapler needles, etc. It can also be applied to raw materials such as used paper spelled by a so-called needleless stapler. In this case, it is preferable to form a blade in the removing portion.

[Application Example 2] The paper supply device according to this application example includes a loading section for loading paper, a transport section for transporting the paper loaded on the loading section from the lowest paper, and a binder attached to the paper. It is characterized in that it has a removing portion for removing the paper, and a plurality of the removing portions are provided by the conveying portion along the paper conveying path so as to overlap with each other in the paper conveying direction.

According to this configuration, by providing a plurality of removing portions so as to overlap each other in the paper transport direction, the chances of removing the binder attached to the paper are increased, and the binder can be removed from the paper more than before. Then, the paper from which the binder has been removed is used as another unit or device (for example, a paper processing device such as a shredder that processes paper, a recycling device such as a sheet manufacturing device using paper as a raw material, or a printer that uses paper as a consumable item. It becomes possible to supply to a paper consuming device such as.

[Application Example 3] The paper shredding device according to the present application example includes a loading section for loading paper, a cutting section for cutting the paper supplied from the loading section, and paper from the loading section toward the cutting section. It has a transporting portion for transporting the paper and a removing portion for removing the binder attached to the paper, and the removing portion is a paper along a paper transport path from the loading portion to the cutting portion. It is characterized in that a plurality of sheets are provided so as to overlap each other in the transport direction.

According to this configuration, by providing a plurality of removing portions so as to overlap each other in the paper transport direction, the chances of removing the binder attached to the paper are increased, and the binder can be removed from the paper more than before. In addition, damage to the cut portion can be suppressed.

[Application Example 4] The removing portions of the sheet manufacturing apparatus, the paper feeding apparatus, and the paper shredding apparatus according to the above application example are provided in a plurality of directions intersecting the conveying direction, and are characterized in that they are arranged alternately. To do.

According to this configuration, the removing portions are arranged without gaps with respect to the raw material. Thereby, even if the binder is in the central portion of the raw material, it can be removed.

[Application Example 5] The removing portion of the sheet manufacturing apparatus, the paper feeding apparatus, and the paper shredding apparatus according to the above application example has a plurality of protrusions, and is formed so that at least one of the protrusions abuts on the binder. It is characterized by being done.

According to this configuration, the protrusion enters between the binder and the raw material, and the binder can be easily removed. It is preferable that two or more protrusions are formed so as to come into contact with the binder, and in this case, a plurality of protrusions enter between the binder and the raw material, and the binder can be easily removed.

[Application Example 6] The removing portion of the sheet manufacturing apparatus, the paper feeding apparatus, and the paper shredding apparatus according to the above application example has a plurality of protrusions, and the protrusions are half the inner width of the binder. It is characterized in that it is provided at the following pitch.

According to this configuration, the protrusions can easily enter between the binder and the raw material, and the binder can be easily removed.

[Application Example 7] In the sheet manufacturing apparatus, the paper supply apparatus, and the paper shredding apparatus according to the above application example, the first removing portion and the second removing portion arranged so as to overlap in the transport direction have a plurality of protrusions, respectively. The first removing portion and the second removing portion are arranged so as to be staggered.

According to this configuration, the chances of removing the binder are further increased, and the binder removal rate can be increased.

[Application Example 8] The removing portion of the sheet manufacturing apparatus, the paper feeding apparatus, and the paper shredding apparatus according to the above application example is provided so as to be inclined with respect to the conveying direction.

According to this configuration, the binder can be removed regardless of how the binder is fastened to the raw material (direction of the binder).

[Application Example 9] In the sheet manufacturing apparatus (or paper shredding apparatus) according to the above application example, a receiving portion that receives the coarsely crushed piece (or the paper piece cut by the cut portion) coarsely crushed by the coarsely crushed portion. It is characterized by having an accommodating portion for accommodating the binder removed by the removing portion.

According to this configuration, the coarse crushed piece and the binder can be separated.

[Application Example 10] The removing portion of the sheet manufacturing device, the paper feeding device, and the paper shredding device according to the above application example is detachably fixed.

According to this configuration, the removing portion can be replaced. For example, maintenance such as replacement when the removed portion is damaged becomes possible. In addition, it is possible to prepare various removal portions having different shapes, materials, etc., and replace them as appropriate.
The sheet manufacturing apparatus according to this application example includes a loading portion for loading a raw material containing fibers, a coarsely crushed portion for coarsely crushing the raw material supplied from the loading portion, and the raw material coarsely crushed by the coarsely crushed portion. A molding part for molding a sheet using the coarsely crushed pieces of the above, a transporting part for transporting the raw material from the loading part to the coarsely crushed part, a removing part for removing the binder that bundles the raw materials, and the above. A compartment having a mounting surface on which the raw material is placed on the loading portion, a gap portion provided in the compartment and through which the raw material can pass, and a gap portion that overlaps with the gap portion in a plan view of the compartment and described above. The roller pair is provided with a roller pair arranged so as to overlap the gap portion in a side view of the compartment, and the roller pairs are parallel to each other in the rotation axis direction and opposite to each other in the rotation direction. The removing portion is provided on one side and the other side intersecting the direction of the rotation axis with reference to the position of the roller pair in the plan view of the partition portion, and has passed through the roller pair. The raw material is supplied to the coarsely crushed portion.
The paper supply device according to the present application example is provided in a loading section for loading paper, a section having a loading surface on which the paper is placed, and the section provided so that the paper can pass through. A pair of rollers arranged so as to overlap the gap portion in a plan view of the partition portion and overlap the gap portion in a side view of the partition portion, and a plane of the partition portion in the partition portion. The roller pair is provided with a removing portion provided on one side and the other side intersecting the rotation axis direction and for removing the binder attached to the paper with reference to the position of the roller pair visually . Is characterized in that the directions of rotation of each other are parallel to each other and the directions of rotation of each other are opposite to each other.
The paper cutting device according to the present application example is provided in a loading section for loading paper, a section having a loading surface on which the paper is placed, and the section provided so that the paper can pass through. A pair of rollers arranged so as to overlap the gap portion in a plan view of the partition portion and overlap the gap portion in a side view of the partition portion, and a plane of the partition portion in the partition portion. With reference to the position of the roller pair visually , between the removing portion provided on one side and the other side intersecting the rotation axis direction for removing the binder attached to the paper and the roller pair. A paper shredding device comprising a cutting portion for cutting the passed paper, and the roller pairs are parallel to each other in the rotation axis direction and opposite to each other in the rotation direction.
Further, the paper cutting device according to the above application example is characterized in that a plurality of the removing portions are provided in a direction intersecting the conveying direction in which the paper is conveyed on the above-mentioned placing surface, and are arranged alternately. ..

The schematic diagram which shows the structure of the paper shredding apparatus which concerns on 1st Embodiment. The schematic diagram which shows the structure of the paper shredding apparatus which concerns on 1st Embodiment. The schematic diagram which shows the structure of the protrusion | region which concerns on 1st Embodiment. Partial sectional view which shows the structure of the removal part which concerns on 1st Embodiment. The schematic diagram which shows the structure of the paper shredding apparatus which concerns on 2nd Embodiment. The schematic which shows the structure of the sheet manufacturing apparatus which concerns on 3rd Embodiment. The schematic diagram which shows the structure of the paper supply apparatus which concerns on 4th Embodiment. The schematic diagram which shows the structure of the paper shredding device (input part) which concerns on modification 1. FIG. The schematic diagram which shows the structure of the paper shredding device (input part) which concerns on modification 2. The schematic diagram which shows the structure of the paper shredding device (input part) which concerns on modification 3. Partial sectional view which shows the structure of the removal part which concerns on modification 4.

Hereinafter, the first to fourth embodiments of the present invention will be described with reference to the drawings. In each of the following figures, in order to make each member or the like recognizable in size, the scale of each member or the like is shown differently from the actual scale.

(First Embodiment)
First, the configuration of the paper cutting device will be described. The paper cutting device includes a loading section for loading paper, a cutting section for cutting the paper supplied from the loading section, a transport section for transporting the paper from the loading section to the cutting section, and a binder attached to the paper. It has a removing portion for removing, and a plurality of removing portions are provided so as to overlap in the paper transporting direction along the paper transport path from the loading section to the cutting section. Hereinafter, a specific configuration will be described.

FIG. 1 is a schematic view (side sectional view) showing the configuration of the paper shredding device, FIG. 2 is a schematic view (plan view) showing the configuration of the paper shredding device, and FIG. 3 is a protrusion. It is the schematic which shows the structure. Further, FIG. 4 is a partial cross-sectional view showing the configuration of the removed portion.

As shown in FIG. 1, the paper shredding device 10 includes a loading unit 11, a supply unit 12, a cutting unit 20, and the like. The paper shredding device 10 has a housing 19. Further, in the housing 19, a compartment 190 for partitioning the housing 19 into an upper side and a lower side is provided. A presser foot 350 that can be opened and closed is arranged on the upper side of the housing 19, and an opening 19a is provided on the lower side of the housing 19.

The loading unit 11 loads paper Pu (which may be used paper Pu or the like as a raw material containing fibers; hereinafter referred to as used paper Pu) or the like. In the present embodiment, the space provided between the partition portion 190 and the pressing portion 350 in the housing 19 corresponds to the loading portion 11. The loading unit 11 is provided with a space capable of loading several to several hundred sheets of used paper Pu. Then, the loaded lowermost used paper Pu is placed following the mounting surface 190a of the compartment 190.

The pressing portion 350 presses the used paper Pu loaded on the loading portion 11 in the direction of gravity. The pressing portion 350 of the present embodiment has a plurality of pressing rollers 351 that come into contact with the loaded uppermost used paper Pu, and a holding portion 352 that is connected to the pressing roller 351 and holds the pressing roller 351 and the holding portion 352 by gravity. It includes a spring portion 353 as an urging portion for urging in the direction, a lid portion 354 to which the spring portion 353 is connected, and the like. The pressing portion 350 is configured to be openable and closable with respect to the housing 19. Then, when the presser portion 350 is in the open state, the used paper Pu can be loaded on the loading portion 11, and when the presser portion 350 is in the closed state, the lid portion 354 is fixed at the upper part of the housing 19. Then, when the pressing portion 350 is closed while the used paper Pu is loaded on the loading portion 11, the pressing roller 351 presses the used paper Pu by the urging force of the spring portion 353.

The supply unit 12 supplies the used paper Pu as a raw material to the cutting unit 20. A roller pair 18 (18a, 18b) is provided as a transporting section for transporting the used paper Pu from the loading section 11 to the cutting section 20. The roller pair 18 according to the present embodiment is a central portion of the compartment 190, and is arranged along the width direction of the used paper Pu to be loaded. Here, the width direction of the used paper Pu to be loaded is, for example, the width (short side) direction of the used paper Pu of A4 size (see FIG. 2). The upper end of the roller pair 18 is arranged so as to come into contact with the lowermost waste paper Pu loaded. Then, the used paper Pu loaded on the loading unit 11 is rotationally driven by the roller pair 18 with the used paper Pu pressed by the pressing unit 350 in the direction of gravity, so that the used paper Pu at the bottom loaded is moved to the roller pair 18. The used paper Pu is folded so as to pass through the roller pair 18 and is conveyed to the cutting portion 20. The number of used paper Pus passing through the roller pairs 18 is not limited to one, and a plurality of used paper Pus may be conveyed at one time.

The cutting section 20 is provided with a coarse crushing blade (cutting blade) 21, and cuts (coarsely crushes) the used paper Pu supplied by the supply section 12 into, for example, several centimeter square paper pieces. As a result, the supplied used paper Pu can be easily cut into pieces of paper. The piece of paper is housed in an accommodating portion (not shown) provided inside or outside the housing from the opening 19a. Alternatively, the piece of paper is temporarily housed in a receiving portion 201a such as a hopper and supplied to another unit or device from a discharge port (pipe 201) (see the third embodiment described later).

The supply unit 12 includes a removal unit 300 for removing the binder that bundles the used paper Pu. The removing portion 300 is arranged on the mounting surface 190a. Here, the binder is, for example, a clip made of a resin material (for example, a resin-based clip or a cellulose-based clip) that is thicker than the paper attached to hold the used paper as a raw material and is made of metal. Clips, metal stapler needles, etc. If the used paper Pu is supplied from the loading portion 11 to the cutting portion 20 in a state of being bound with such a binder, the coarse crushing blade 21 of the cutting portion 20 may be damaged by the binder. Therefore, before supplying the used paper Pu to the cutting section 20, the binder attached to the used paper Pu is removed by the removing section 300.

A plurality of removing portions 300 are provided so as to overlap in the transport direction of the waste paper Pu along the transport path of the waste paper Pu from the loading portion 11 to the cutting portion 20. Specifically, as shown in FIG. 2, the removing portion 300 has a substantially plate shape in a plan view, and a plurality of removing portions 300 are arranged on the mounting surface 190a. In this embodiment, eight removing portions 300 (300a to 300h) are arranged. Further, in the eight removing portions 300 (300a to 300h), the removing portions 300a and the removing portions 300b are arranged in pairs. Further, the removing section 300c and the removing section 300d, the removing section 300e and the removing section 300f, and the removing section 300g and the removing section 300h are arranged in pairs. Further, in detail, the removing portion 300a is arranged on the upstream side in the first transport direction W1 so as to overlap the first transport direction W1 of the waste paper Pu along the first transport path R1 of the waste paper Pu toward the roller pair 18. The removal unit 300b is arranged on the downstream side of the removal unit 300a in the first transport direction W1. Further, the removal unit 300c and the removal unit 300d are arranged at positions facing the removal unit 300a and the removal unit 300b with respect to the first transport direction W1. Further, upstream in the second transport direction W2 so as to overlap the second transport direction W2 which is opposite to the first transport direction W1 of the waste paper Pu along the second transport path R2 of the waste paper Pu toward the roller pair 18. The removing portion 300e is arranged on the side, and the removing portion 300f is arranged on the downstream side of the removing portion 300e in the second transport direction W2. Further, the removing unit 300g and the removing unit 300h are arranged at positions facing the removing unit 300e and the removing unit 300f with respect to the second transport direction W2.

As shown in FIG. 2, these removing portions 300 (300a to 300h) are provided so as to be inclined with respect to the first and second transport directions W1 and W2. Specifically, the end portion of each removal portion 300 (300a to 300h) corresponding to the central portion of the division portion 190 in the direction intersecting the first and second transport directions W1 and W2 is a roller pair 18 rather than the other end portion. It is tilted to approach.

Further, as shown in FIG. 3, the removing portion 300 has a plurality of protrusions 301, and is formed so that at least one or more protrusions 301 come into contact with the binder. Specifically, each protrusion 301 is formed toward the upstream side of the first and second transport directions W1 and W2. As a result, the protrusion 301 can easily come into contact with the binder attached to the used paper Pu, and the removal rate of the binder can be increased. In this case, the protrusion 301 is preferably provided at a pitch P1 of half or less of the inner width of the binder. As a result, two or more protrusions 301 can be brought into contact with the binder, and the removal rate of the binder can be increased. Further, as shown in FIG. 3, for example, the removal unit 300a as the first removal unit and the removal unit 300b as the second removal unit arranged so as to overlap the first transport direction W1 have a plurality of protrusions 301, respectively. The protrusions 301 of the removal portion 300a and the protrusions 301 of the removal portion 300b are arranged so as to be staggered with respect to the first transport direction W1. As a result, the chances that the binder comes into contact with the protrusions 301 of the removal portions 300a and 300b are increased, and the removal rate of the binder can be further increased.

Further, as shown in FIG. 4, an accommodating portion 400 for accommodating the binder removed by the removing portion 300 is provided. The accommodating portion 400 is a recess formed in the direction of gravity from the mounting surface 190a of the compartment 190. The accommodating portion 400 is provided for each removing portion 300 (300a to 300h) corresponding to the upstream side of the first and second transport directions W1 and W2. As a result, the binder removed by the removing portion 300 falls in the direction of gravity and is accommodated in the accommodating portion 400. Therefore, the binder is not conveyed to the cutting portion 20, and the coarse crushing blade 21 and the like of the cutting portion 20 can be protected.

As described above, according to the present embodiment, the following effects can be obtained.

A plurality of removing portions 300 (300a to 300h) provided with the protrusions 301 are provided, and these removing portions 300 (300a to 300h) are arranged so as to overlap the first and second transport directions W1 and W2 of the used paper Pu. To. This increases the chances of removing the binder attached to the used paper Pu. Therefore, the binder removal rate from the used paper Pu can be improved.

(Second Embodiment)
Next, the second embodiment will be described. Since the basic configuration of the paper shredding device according to the present embodiment is almost the same as the configuration of the paper shredding device 10 according to the first embodiment, the description thereof is omitted and the configuration is different from that of the first embodiment. The configuration, that is, the arrangement configuration of the removal unit will be described.

FIG. 5 is a schematic view showing the configuration of the paper shredding device according to the present embodiment, and more specifically, is a plan view showing the arrangement (arrangement) of the removing portions. The paper shredding device 10a of the present embodiment includes a loading unit, a supply unit, a cutting unit, and the like, as in the first embodiment. Since these configurations are the same as the configurations of the first embodiment, the description thereof will be omitted.

As shown in FIG. 5, a plurality of removing portions 300 of the paper shredding portion 10a are arranged on the mounting surface 190a. In this embodiment, eight removing portions 300 (300a to 300h) are arranged. Further, in the eight removing portions 300 (300a to 300h), the removing portions 300a and the removing portions 300b are arranged in pairs. Further, the removing section 300c and the removing section 300d, the removing section 300e and the removing section 300f, and the removing section 300g and the removing section 300h are arranged in pairs. The removing portions 300a and 300b and the removing portions 300e and 300f are arranged with respect to one region (the upper half region in FIG. 5) of the mounting surface 190a divided into the transport directions W1 and W2, and the removing portions 300c and 300d. The removing portions 300g and 300h are arranged with respect to the other region (the lower half region in FIG. 5) in which the mounting surface 190a is divided into the transport directions W1 and W2. Further, the removing portions 300a and 300b and the removing portions 300c and 300d are arranged with respect to one region (the region on the right side from the roller 18a in FIG. 5) in which the mounting surface 190a is divided into two in the direction orthogonal to the transport directions W1 and W2. The removing portions 300e and 300f and the removing portions 300g and 300h are arranged with respect to the other region (the region on the left side from the roller 18b in FIG. 5) in which the mounting surface 190a is divided into two in the direction orthogonal to the transport directions W1 and W2. Has been done. Further, in detail, the removing portion 300a is arranged on the upstream side in the first transport direction W1 so as to overlap the first transport direction W1 of the waste paper Pu along the first transport path R1 of the waste paper Pu toward the roller pair 18. The removal unit 300b is arranged on the downstream side of the removal unit 300a in the first transport direction W1. Similarly, the removing portion 300c and the removing portion 300d are arranged so as to overlap with the first transport direction W1 of the used paper Pu. Further, upstream in the second transport direction W2 so as to overlap the second transport direction W2 which is opposite to the first transport direction W1 of the waste paper Pu along the second transport path R2 of the waste paper Pu toward the roller pair 18. The removing portion 300e is arranged on the side, and the removing portion 300f is arranged on the downstream side of the removing portion 300e in the second transport direction W2. Similarly, the removing portion 300g and the removing portion 300h are arranged so as to overlap the second transport direction W2 of the used paper Pu.

The removing portions 300 (300a to 300h) are provided so as to be inclined with respect to the first and second transport directions W1 and W2. Specifically, the end portion of each removal portion 300 (300a to 300h) corresponding to the central portion of the division portion 190 in the direction intersecting the first and second transport directions W1 and W2 is a roller pair 18 rather than the other end portion. It is tilted to approach.

Further, a plurality of removing portions 300 (300a to 300h) are provided in directions intersecting the first and second transport directions W1 and W2, and are arranged alternately. Specifically, the removing portions 300a, the removing portions 300c, the removing portions 300b, and the removing portions 300d are alternately arranged in this order from the upstream side to the downstream side of the first transport direction W1. Then, the ends of the removal portions 300 (300a to 300d) corresponding to the central portion of the division portion 190 in the direction intersecting the first transport direction W1 are arranged so as to overlap the first transport direction W1 of the used paper Pu. ..

Similarly, the removing portions 300g, the removing portions 300e, the removing portions 300h, and the removing portions 300f are alternately arranged in this order from the upstream side to the downstream side of the second transport direction W2. Then, the ends of the removal portions 300 (300e to 300h) corresponding to the central portion of the division portion 190 in the direction intersecting the second transport direction W2 are arranged so as to overlap the second transport direction W2 of the used paper Pu. ..

Since the configuration of the protrusion 301 formed in the removal portion 300 is the same as the configuration according to the first embodiment, the description thereof will be omitted. Further, as in the first embodiment, the accommodating unit 400 for accommodating the binder removed by the removing unit 300 is provided.

As described above, according to the present embodiment, the following effects can be obtained.

A plurality of removing portions 300 (300a to 300h) are provided in a direction intersecting the first and second transport directions W1 and W2, and are arranged alternately. As a result, even if the binder is attached to the central portion of the used paper Pu, it can be removed.

(Third Embodiment)
Next, the configuration of the sheet manufacturing apparatus will be described. The sheet manufacturing apparatus is based on a technique for forming a raw material (decomposed material) Pu such as a pure pulp sheet or used paper into a new sheet Pr. The sheet manufacturing apparatus according to the present embodiment includes a loading section for loading raw materials containing fibers, a coarsely crushed section (cutting section) for coarsely crushing the raw material supplied from the loading section, and a raw material coarsely crushed by the coarsely crushed section. A removing section including a molding section for molding a sheet using the coarsely crushed pieces of the above, a transport section for transporting the raw material from the loading section to the coarse crushed section, and a removing section for removing the binder that bundles the raw materials. Is provided so as to overlap in the transport direction of the raw material along the transport path of the raw material from the loading portion to the coarsely crushed portion. Hereinafter, the configuration of the sheet manufacturing apparatus will be specifically described.

FIG. 6 is a schematic view showing the configuration of the sheet manufacturing apparatus according to the present embodiment. As shown in FIG. 6, in the sheet manufacturing apparatus 1 of the present embodiment, the charging section 10, the defibrating section 30, the sorting section 40, the sorting section 50, the additive charging section 60, and the depositing section 70, which form the molding section, It is provided with a heating and pressurizing unit 120 and the like. It also includes a control unit (not shown) that controls these members.

The charging unit 10 of the present embodiment is the one to which the paper shredding device 10 according to the first embodiment is applied. Therefore, since the configuration of the charging unit 10 is the same as the configuration of the paper shredding device 10, a detailed description of the configuration of the charging unit 10 will be omitted.
The charging unit 10 includes a supply unit 12, a coarse crushing unit 20 (cutting unit 20), etc. (see FIG. 1), supplies used paper or the like as a raw material, and coarsely crushes the supplied used paper into several centimeter square pieces of paper. It is to (cut). Then, the coarsely crushed pieces are received by the receiving portion 201a and supplied to the defibrating portion 30 via the pipe 201 connected to the receiving portion 201a.

The defibration section 30 defibrates a material containing fibers in the air (hereinafter, referred to as air) such as in the air (atmosphere). The defibration section 30 is provided with a rotating rotary blade (not shown), and defibrate the coarsely crushed pieces supplied from the coarse crushing section 20 into fibers. In the present application, a product defibrated by the defibrating portion 30 is referred to as a defibrated product, and a product that has passed through the defibrating portion 30 is referred to as a defibrated product. The defibrating section 30 of the present embodiment is used to defibrate in the air in a dry manner. Due to the defibration treatment of the defibration section 30, the printed ink, toner, bleeding preventive material, and other coating materials on paper become grains of several tens of μm or less (hereinafter referred to as “ink grains”) and fibers. Separate from. Therefore, the defibrated product emitted from the defibrating portion 30 is the fibers and ink particles obtained by defibrating the paper piece. Then, the mechanism is such that an air flow is generated by the rotation of the rotary blade, and the fibers defibrated through the pipe 202 are carried on the air flow to the classification unit 40 in the air. If necessary, the defibration section 30 may be separately provided with an airflow generator for generating an airflow for transporting the defibrated fibers to the classification section 40 via the pipe 202.

The classification unit 40 classifies the introduced material by the air flow. In the present embodiment, the defibrated product as an introduction material is classified into ink particles and fibers. The classification unit 40 can classify the conveyed defibrated product into ink particles and fibers by applying a cyclone, for example. An airflow type classifier of another type may be used instead of the cyclone. In this case, as the airflow type classifier other than the cyclone, for example, an elbow jet, an eddy classifier, or the like is used. The airflow type classifier generates a swirling airflow and separates and classifies it according to the difference in centrifugal force received depending on the size and density of the defibrated material. The classification point can be adjusted by adjusting the airflow velocity and centrifugal force. .. As a result, the ink particles are relatively small and have a low density, and the fibers are larger and denser than the ink particles.

The classification unit 40 of the present embodiment is a tangential input type cyclone, and has an introduction port 40a into which an introduction material is introduced from the defibration unit 30, a cylinder portion 41 having the introduction port 40a in the tangential direction, and a lower portion of the cylinder portion 41. It is composed of a conical portion 42 following the conical portion 42, a lower outlet 40b provided in the lower part of the conical portion 42, and an upper exhaust port 40c provided in the upper center of the tubular portion 41 for discharging fine powder. The diameter of the conical portion 42 decreases toward the lower side in the vertical direction.

In the classification process, the airflow on which the defibrated product introduced from the introduction port 40a of the classification unit 40 is placed changes to a circumferential motion at the tubular portion 41 and the conical portion 42, and centrifugal force is applied to classify. Then, the fibers larger and denser than the ink particles move to the lower outlet 40b, and the relatively small and low density ink particles are led out to the upper exhaust port 40c as fine powder together with air. Then, the ink particles are discharged from the upper exhaust port 40c of the classification unit 40. Then, the discharged ink particles are collected by the collection unit 80 via the pipe 206 connected to the upper exhaust port 40c of the classification unit 40. On the other hand, a classified product containing fibers classified through the pipe 203 is conveyed in the air from the lower outlet 40b of the classifying section 40 toward the sorting section 50. It may be conveyed from the classification unit 40 to the sorting unit 50 by the air flow at the time of classification, or may be conveyed from the upper classification unit 40 to the lower sorting unit 50 by gravity. In addition, a suction part or the like for efficiently sucking the short fiber mixture from the upper exhaust port 40c may be arranged in the upper exhaust port 40c or the pipe 206 of the classification part 40. The classification is not exactly divided by a certain size or density. Moreover, it cannot be accurately divided into fibers and ink particles. The relatively short fibers among the fibers are discharged from the upper exhaust port 40c together with the ink particles. The relatively large ink particles are discharged from the lower outlet 40b together with the fibers.

The sorting unit 50 sorts a classified product (defibrated product) containing fibers classified by the classifying unit 40 by passing it through a sieving unit 51 having a plurality of openings. Further, specifically, the classified product containing the fibers classified by the classifying unit 40 is sorted into a passing product that passes through the opening and a residue that does not pass through the opening. The sorting unit 50 of the present embodiment includes a mechanism for dispersing the classified material in the air by a rotary motion. Then, the passing material that has passed through the opening due to the sorting by the sorting unit 50 is transported from the passing material transporting unit 52 to the depositing portion 70 side via the pipe 204. On the other hand, the residue that did not pass through the opening due to the sorting by the sorting section 50 is returned to the defibrating section 30 as a fiber to be defibrated again via the pipe 205. As a result, the residue is reused (reused) without being discarded.

The passing material that has passed through the opening due to the sorting by the sorting unit 50 is conveyed in the air to the deposition unit 70 via the pipe 204. It may be transported from the sorting unit 50 to the deposition unit 70 by a blower (not shown) that generates an air flow, or may be transported by gravity from the sorting unit 50 above to the deposition unit 70 below. An additive input section for adding an additive such as a binder resin (for example, a thermoplastic resin or a thermosetting resin) to a passing material to be conveyed between the sorting section 50 and the deposit section 70 in the pipe 204. 60 is provided. As the additive, in addition to the binder resin, for example, a flame retardant, a whiteness improver, a sheet force enhancer or a sizing agent, an absorption adjuster, a fragrance, a deodorant, or the like can be added. These additives are stored in the additive storage unit 61, and are charged from the charging port 62 by a charging mechanism (not shown).

The depositing portion 70 makes it possible to deposit a material containing fibers, and deposits at least a part of the defibrated product defibrated by the defibrating portion 30 in the air. Specifically, the depositing portion 70 is formed by depositing a material containing fibers and a binder resin input from the pipe 204 to form a web W, and has a mechanism for uniformly dispersing the fibers in the air. I have. Further, the depositing portion 70 has a moving portion for depositing the defibrated product as a deposit (web W) while moving. The moving portion of the present embodiment is composed of a tension roller 72 and an endless mesh belt 73 on which a mesh stretched by the tension roller 72 is formed. Then, at least one of the tension rollers 72 rotates on its axis, so that the mesh belt 73 rotates (moves) in one direction. The web W according to the present embodiment refers to a configuration form of an object including fibers and a binder resin. Therefore, even if the form such as dimensions changes during heating, pressurization, cutting, transportation, etc. of the web, it is shown as a web.

First, as a mechanism for uniformly dispersing the fibers in the air, a forming drum 71 into which the fibers and the binder resin are charged is arranged in the deposition portion 70. Then, by rotationally driving the forming drum 71, the binder resin (additive) can be uniformly mixed in the passing material (fiber). The forming drum 71 is provided with a screen having a plurality of small holes. Then, the forming drum 71 is rotationally driven to uniformly mix the binding resin (additive) in the passing material (fiber), and the fiber or the mixture of the fiber and the binding resin that has passed through the small holes is uniformly mixed in the air. Can be dispersed in.

A mesh belt 73 is arranged below the forming drum 71. Further, below the forming drum 71 vertically, a suction device 75 as a suction portion for generating an air flow toward the vertically downward direction is provided via a mesh belt 73. The suction device 75 can suck the fibers dispersed in the air onto the mesh belt 73.

Then, the fibers and the like that have passed through the small hole screen of the forming drum 71 are deposited on the mesh belt 73 by the suction force of the suction device 75. At this time, by moving the mesh belt 73 in one direction, it is possible to form a web W containing fibers and a binder resin and deposited in a long shape. By continuously performing the dispersion from the forming drum 71 and the movement of the mesh belt 73, a strip-shaped continuous web W is formed. The mesh belt 73 may be made of metal, resin, or non-woven fabric, and may be any type as long as fibers can be deposited and airflow can pass through. If the hole diameter of the mesh of the mesh belt 73 is too large, fibers will enter between the meshes, resulting in unevenness when the web W (sheet) is formed. On the other hand, if the hole diameter of the mesh is too small, the suction device 75 It is difficult to form a stable air flow. Therefore, it is preferable to adjust the hole diameter of the mesh as appropriate. The suction device 75 can be configured by forming a closed box having a window of a desired size under the mesh belt 73, sucking air from other than the window, and making the inside of the box negative pressure from the outside air.

The web W formed on the mesh belt 73 is conveyed in the conveying direction (white arrows in the drawing) by the rotational movement of the mesh belt 73. An intermediate transport portion 90 as a peeling portion is arranged on the upper side of the mesh belt 73. The web W is peeled off from the mesh belt 73 by the intermediate transport portion 90 and transported to the pressurizing portion 110 side. That is, it has a peeling portion (intermediate transporting portion 90) for peeling the deposit (web W) from the moving portion (mesh belt 73), and the peeled deposit (web W) can be transported to the pressurizing portion 110. The intermediate transport unit 90 is configured to be able to transport the web W while sucking the web W vertically upward (in the direction in which the web W is separated from the mesh belt 73). The intermediate transport portion 90 is arranged vertically above the mesh belt 73 (in the direction perpendicular to the surface of the web W), and a part of the intermediate transport portion 90 is displaced downstream from the mesh belt 73 in the transport direction of the web W. Is arranged. The transport section of the intermediate transport section 90 is a section from the tension roller 72a on the downstream side of the mesh belt 73 to the pressurizing section 110.

The intermediate transport unit 90 includes a transport belt 91, a plurality of tension rollers 92, and a suction chamber 93. The transport belt 91 is an endless mesh belt in which a mesh stretched by a tension roller 92 is formed. Then, at least one of the plurality of tension rollers 92 rotates on its axis, so that the transport belt 91 rotates (moves) in one direction.

The suction chamber 93 is arranged inside the transport belt 91, has a hollow box shape having an upper surface and four side surfaces in contact with the upper surface, and has a bottom surface (a surface facing the transport belt 91 located below). Is open. Further, the suction chamber 93 is provided with a suction portion for generating an air flow (suction force) in the suction chamber 93. Then, by driving the suction unit, the internal space of the suction chamber 93 is sucked, and air flows from the bottom surface of the suction chamber 93. As a result, an air flow toward the upper side of the suction chamber 93 is generated, and the web W can be sucked from above the web W so that the web W can be attracted to the transport belt 91. Then, the transport belt 91 moves (circulates) by rotating the tension roller 92, and can transport the web W toward the pressurizing unit 110. Further, since the suction chamber 93 is arranged at a position on the downstream side where a part of the suction chamber 93 overlaps with the mesh belt 73 and does not overlap with the suction device 75 when viewed from above, the web W on the mesh belt 73 is a suction chamber. It can be peeled off from the mesh belt 73 at a position facing the 93 and attracted to the transport belt 91. The tension roller 92 rotates so that the transport belt 91 moves at the same speed as the mesh belt 73. If there is a difference in speed between the mesh belt 73 and the transport belt 91, it is possible to prevent the web W from being pulled and breaking or buckling by setting the same speed.

The pressurizing section 110 is arranged on the downstream side of the intermediate transport section 90 in the transport direction of the web W. The pressurizing unit 110 is composed of a pair of pressurizing rollers 111 and 112, and pressurizes the conveyed web W. For example, the pressurizing portion 110 pressurizes the web W so as to have a thickness of about 1/5 to 1/30 of the thickness of the web W formed by the depositing portion 70. Thereby, the strength of the web W can be improved.

The heating and pressurizing unit 120 is arranged on the downstream side of the pressurizing unit 110 in the transport direction of the web W. The heating and pressurizing unit 120 heats and pressurizes the web W as a deposit deposited in the depositing unit 70. The heating and pressurizing unit 120 binds the fibers contained in the web W to each other via a binding resin. The heating and pressurizing unit 120 of the present embodiment is composed of a pair of heating rollers 121 and 122. A heating member such as a heater is provided at the center of the rotation shaft of the heating rollers 121 and 122, and the web W is heated by passing the web W between the pair of heating rollers 121 and 122. It can be pressurized. Then, when the web W is heated and pressed by the pair of heating rollers 121 and 122, the binding resin is melted and easily entangled with the fibers, the fiber spacing is shortened, and the contact points between the fibers are increased.

On the downstream side of the heating and pressurizing section 120 in the transport direction, as a cutting section 130 for cutting the web W, the first cutting section 130a for cutting the web W along the transport direction of the web W intersects with the transport direction of the web W. A second cutting portion 130b for cutting the web W is arranged in the direction in which the web W is cut. The first cutting portion 130a is, for example, a slitter, and cuts according to a predetermined cutting position in the transport direction of the web W. The second cutting portion 130b is, for example, a rotary cutter, and cuts a continuous web W into a single-wafer shape according to a cutting position set to a predetermined length. As a result, a sheet Pr (web W) of a desired size is formed. The cut sheet Pr is loaded on the stacker 160 or the like. In addition, the web W may be configured to be wound by a winding roller in a continuous state without cutting. From the above, the sheet Pr can be manufactured in the sheet manufacturing apparatus 1.

The sheet according to the above embodiment mainly refers to a sheet made from a material containing fibers such as used paper and pure pulp. However, the present invention is not limited to such a shape, and may be a board shape or a web shape (or a shape having irregularities). Further, the raw material may be a plant fiber such as cellulose, a chemical fiber such as PET (polyethylene terephthalate) or polyester, or an animal fiber such as wool or silk. In the present application, the sheet is divided into paper and non-woven fabric. The paper includes a form in the form of a thin sheet and the like, and includes recording paper for writing and printing, wallpaper, wrapping paper, colored paper, Kent paper and the like. Nonwoven fabrics are thicker or less strong than paper, and include non-woven fabrics, fiber boards, tissue papers, kitchen papers, cleaners, filters, liquid absorbers, sound absorbers, cushioning materials, mats, and the like.

Further, in the present embodiment, the used paper mainly refers to printed paper, but if the raw material is molded as paper, it is regarded as used paper regardless of whether or not it is used.

As described above, according to the present embodiment, the following effects can be obtained.

The charging section 10 is provided with a plurality of removing sections 300 (300a to 300h) provided with protrusions 301, and these removing sections 300 (300a to 300h) are used in the first and second transport directions W1 and W2 of the used paper Pu. Arranged so that they overlap. This increases the chances of removing the binder attached to the used paper Pu. Therefore, the binder removal rate from the used paper Pu can be improved. Then, damage to the coarse crushing blade 21 of the crushing portion 20 due to the binder can be reduced.

(Fourth Embodiment)
Next, the configuration of the paper supply device will be described. The paper supply device has a loading unit for loading paper, a transport unit for transporting the paper loaded on the loading unit from the lowest paper, and a removing unit for removing the binder attached to the paper. , The removing unit is a device provided by the transport unit along the paper transport path so as to overlap in the paper transport direction.

FIG. 7 is a schematic view (side sectional view) showing the configuration of the paper supply device. As shown in FIG. 7, the paper supply device 500 includes a loading section 11, a roller pair 18 as a transport section, a removing section 300, and the like. The paper supply device 500 of the present embodiment has a configuration in which the cutting portion 20 (and the receiving portion 201a, the pipe 201) is omitted from the paper shredding device 10 according to the first embodiment. Therefore, since the configurations of the loading unit 11, the roller pair 18, the removing unit 300, and the like are the same as those of the paper shredding device 10, the description thereof will be omitted.

In the paper supply device 500, the paper (waste paper) Pu loaded on the loading unit 11 is conveyed (supplied) from the opening 19a through the roller pair 18 via the removing unit 300.

As described above, according to the present embodiment, the following effects can be obtained.

A plurality of removing portions 300 (300a to 300h) provided with the protrusions 301 are provided, and these removing portions 300 (300a to 300h) are arranged so as to overlap the first and second transport directions W1 and W2 of the used paper Pu. To. This increases the chances of removing the binder attached to the used paper Pu. Therefore, the binder removal rate from the used paper Pu can be improved, and the used paper Pu from which the binder has been removed can be supplied (conveyed) to another unit or apparatus.

The present invention is not limited to the above-described embodiment, and various changes and improvements can be added to the above-described embodiment. A modified example will be described below. Modification examples may be combined.

(Modification 1) In the above embodiment, the removing portions 300 (300a to 300h) are arranged so as to be inclined with respect to the first and second transport directions W1 and W2, but the configuration is not limited to this. FIG. 8 is a schematic view showing the configuration of the paper shredding device (feeding unit) according to the first modification. As shown in FIG. 8, a plurality of removing portions 300 (300i to 300l) are arranged in the paper shredding device 10b. These removing portions 300 (300i to 300l) are arranged so as to be substantially orthogonal to the first and second transport directions W1 and W2. Specifically, the removal unit 300i and the removal unit 300j are arranged so as to be substantially orthogonal to the first transport direction W1. The removing unit 300i and the removing unit 300j are arranged so as to overlap each other in the first transport direction W1. Further, the removing portion 300k and the removing portion 300l are arranged so as to be substantially orthogonal to the second transport direction W2. The removing portion 300k and the removing portion 300l are arranged so as to overlap each other in the second transport direction W2. Even in this way, the chances of removing the binder attached to the used paper Pu are increased, and the binder removal rate from the used paper Pu can be improved.

(Modification 2) In the paper shredding devices (loading section) 10 and 10a of the above embodiment, the loading section 11, the supply section 12, the cutting section (coarse crushing section) 20, and the like are configured as one unit. It is not limited to this configuration. FIG. 9 is a schematic view showing the configuration of the paper shredding device (feeding unit) according to the modified example 2. As shown in FIG. 9, in the paper shredding device (loading section) 10c, a loading section 11, a supply section 12, a cutting section (coarse crushing section) 20, and the like are separately arranged. Specifically, it includes a tray portion 11 as a loading portion 11 capable of loading a plurality of used paper Pus. The tray portion 11 is provided with a moving portion 11a capable of loading used paper Pu and ascending and descending. Further, a plurality of removing portions 300 (two removing portions 300m and 300n in this modification) are arranged at the upper end portion of the used paper Pu loaded on the tray portion 11. Further, the removing portions 300m and 300n are arranged so as to overlap with the transport direction W3 of the used paper Pu. Further, a pickup roller 18c constituting the transporting portion is arranged above the tray portion 11, and the used paper Pu is conveyed in the conveying direction W3 by the rotation of the pickup roller 18c. At this time, the binder attached to the used paper Pu is removed by the removing portions 300m and 300n. Further, a roller pair 18 is arranged on the downstream side of the pickup roller 18c in the transport direction W3. Then, the used paper Pu is conveyed to the cutting portion (coarse crushing portion) 20 by the roller pair 18 and cut into pieces of paper. For example, in the case of the sheet manufacturing apparatus 1, the cut coarse crushed pieces are received by the receiving portion 201a and supplied to the defibrating portion 30 via the pipe 201. Even in this way, the same effect as the above effect can be obtained.

(Modification 3) In the removal portions 300 (300a to 300h) in the above embodiment, the inner ends of the removal portions 300 (300a to 300h) are higher than the outer ends in the first and second transport directions W1 and W2. It is arranged to be inclined (close to the roller pair 18) on the downstream side of the, but is not limited to this configuration. Here, the inner end of each removal portion 300 (300a to 300h) is the end on the side located closer to the center in the width direction (direction intersecting the transport direction) of the used paper Pu, and is the outer end. The portion is an end portion on the side of the used paper Pu located closer to the end portion on the width direction side. FIG. 10 is a schematic view showing the configuration of the paper shredding device (feeding unit) according to the modified example 3. As shown in FIG. 10, the removing portions 300 (300a to 300h) of the paper shredding device 10d are first and second transported by the inner end of each removing portion 300 (300a to 300h) than the outer end. It may be arranged so as to be inclined (away from the roller pair 18) on the upstream side of the directions W1 and W2. That is, each removing portion 300 (300a to 300h) of the paper shredding device 10a according to the first embodiment may be tilted in a direction opposite to the tilting direction. Even in this way, the same effect as described above can be obtained.

(Modification 4) The removing portion 300 (300a to 300h) in the above embodiment is arranged on the mounting surface 190a so that the top of the removing portion 300 (protruding portion 301) is higher than the mounting surface 190a. However, it is not limited to this configuration. FIG. 11 is a partial cross-sectional view showing the configuration of the removal portion according to the modified example 4. As shown in FIG. 11, the removing portion 300 and the mounting surface 190a may be arranged so as to be flush with each other. In this case, for example, a recess may be formed in a part of the partition 190, and the removal portion 300 may be arranged in the recess. In this way, since there is no step between the removing portion 300 and the mounting surface 190a, the used paper Pu can be smoothly conveyed.
Further, as shown in FIG. 11, the magnet 302 may be arranged at the bottom of the recess of the accommodating portion 400. In this way, the binder containing the magnetic material removed by the removing unit 300 can be captured, and the binder can be prevented from scattering.

(Modification 5) The removal unit 300 of the above embodiment is provided with protrusions 301 in all the removal units 300a to 300h, but any of the two removal units 300 overlapping in the first and second transport directions W1 and W2. The protrusion 301 may be provided on only one of them. For example, the removal portions 300a, 300c, 300e, 300g located on the upstream side may be provided with the protrusions 301, and the removal portions 300b, 300d, 300f, 300h located on the downstream side may be edges without the protrusions 301.

(Modification 6) Although the removal portion 300 of the above embodiment is integrally formed with the division portion 190, the removal portion 300 may be detachably fixed (replaceable) to the division portion 190. For example, the removing portion 300 may be fixed to the compartment 190 by a fastener such as a screw, or the removing portion 300 may be fixed to the compartment 190 by a snap-fit structure. In this way, the compartment 190 can be easily manufactured. Further, since the removing portion can be replaced, maintenance such as replacement when the removing portion is damaged becomes possible. Further, it is possible to prepare various removal portions having different shapes and materials and replace them as appropriate for use.

1 ... Sheet manufacturing device, 10, 10a, 10b, 10c, 10d ... Paper shredding device (loading section), 11 ... Loading section, 12 ... Supply section, 18 ... Roller pair as transport section, 20 ... Cutting section (coarse) Crushing part), 21 ... coarse crushing blade, 30 ... defibrating part, 40 ... classification part, 50 ... sorting part, 60 ... additive charging part, 70 ... depositing part, 90 ... intermediate transport part, 110 ... pressurizing part, 120 ... heating and pressurizing part, 130 ... cutting part, 160 ... stacker, 190 ... section part, 190a ... mounting surface, 201a ... receiving part, 300, 300a, 300b, 300c, 300d, 300e, 300f, 300g, 300h, 300i, 300j, 300k, 300l, 300m, 300n ... Removal part, 301 ... Protrusion part, 350 ... Pressing part, 400 ... Accommodating part, 500 ... Paper supply device.

Claims (10)

A loading section for loading raw materials containing fibers,
A coarsely crushed part for coarsely crushing the raw material supplied from the loading part,
A molding part for molding a sheet using the coarsely crushed pieces of the raw material roughly crushed by the crushed part, and a molding part.
A transport unit that transports the raw material from the loading unit to the coarsely crushed unit, and
A removing part for removing the binder that bundles the raw materials,
A compartment having a mounting surface on which the raw material is placed, and a compartment
A gap portion provided in the compartment and through which the raw material can pass,
A pair of rollers arranged so as to overlap the gap in a plan view of the compartment and overlap the gap in a side view of the compartment.
With
The roller pairs are parallel to each other in the axial direction of rotation, and the directions of rotation are opposite to each other.
The removing portion is provided on one side and the other side intersecting the rotation axis direction in the compartment portion with reference to the position of the roller pair in the plan view of the compartment portion .
A sheet manufacturing apparatus, characterized in that the raw material that has passed through the roller pair is supplied to the coarsely crushed portion. A loading section for loading paper and
A section having a mounting surface on which the paper is placed on the loading section,
A gap portion provided in the compartment and through which the paper can pass,
A pair of rollers arranged so as to overlap the gap in a plan view of the compartment and overlap the gap in a side view of the compartment.
In the compartment, the binder provided on one side and the other side intersecting the rotation axis direction with reference to the position of the roller pair in the plan view of the compartment is used for removing the binder attached to the paper. With the removal part
With
The paper supply device is characterized in that the roller pairs are parallel to each other in the rotation axis directions and the rotation directions are opposite to each other. A loading section for loading paper and
A section having a mounting surface on which the paper is placed on the loading section,
A gap portion provided in the compartment and through which the paper can pass,
A pair of rollers arranged so as to overlap the gap in a plan view of the compartment and overlap the gap in a side view of the compartment.
In the compartment, the binder provided on one side and the other side intersecting the rotation axis direction with reference to the position of the roller pair in the plan view of the compartment is used for removing the binder attached to the paper. With the removal part
A cutting portion that cuts the paper that has passed between the roller pairs,
With
The roller pair is a paper shredding device characterized in that the rotation axis directions are parallel to each other and the rotation directions are opposite to each other. In the paper shredding device according to claim 3.
A paper shredding device characterized in that a plurality of the removing portions are provided in a direction intersecting a conveying direction in which the paper is conveyed on the above-mentioned placing surface and are arranged alternately. In the paper shredding device according to claim 3 or 4.
A paper shredding device characterized in that the removing portion has a plurality of protrusions, and at least one of the protrusions is formed so as to come into contact with the binder. In the paper shredding device according to claim 3 or 4.
A paper shredding device characterized in that the removing portion has a plurality of protrusions, and the protrusions are provided at a pitch of half or less of the inner width of the binder. In the paper shredding device according to any one of claims 3 to 6.
The first removing portion and the second removing portion arranged so as to overlap in the transport direction each have a plurality of protrusions.
A paper shredding device characterized in that the protrusions of the first removing portion and the protrusions of the second removing portion are arranged so as to be staggered. In the paper shredding device according to any one of claims 3 to 7.
A paper shredding device characterized in that the removing portion is provided so as to be inclined with respect to the transport direction. In the paper shredding device according to any one of claims 3 to 8.
A receiving portion that receives a piece of paper cut by the cutting portion, and a receiving portion.
A paper shredding device comprising a storage portion for accommodating the binder removed by the removal unit. In the paper shredding device according to any one of claims 3 to 9.
The removing portion is a paper shredding device characterized in that it is detachably fixed.

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