JP6573036B2 - Sheet manufacturing apparatus and sheet manufacturing apparatus control method - Google Patents

Description

  The present invention relates to a sheet manufacturing apparatus and a control method for the sheet manufacturing apparatus.

  The sheet manufacturing apparatus includes a manufacturing unit that manufactures a sheet using a part of a raw material containing fibers, a suction unit that sucks a removed material that is not used in the sheet, and a trap that collects the removed material with a filter. The structure provided with the collection part is known (for example, refer patent document 1).

Japanese Patent Laid-Open No. 2006-055557

By the way, since it is necessary to dispose of the removed material after it accumulates to some extent, for example, it is conceivable that the removed material is accommodated in a box or the like having a predetermined volume so that it can be taken out from the box or the like when discarded.
However, since the removed material contains fine particles such as fibers, there is a risk that the removed material will scatter around when taken out from the sheet manufacturing apparatus.
Therefore, an object of the present invention is to suppress scattering of the removed matter to the outside when the removed matter is taken out.

In order to achieve the above object, a sheet manufacturing apparatus of the present invention contains a sheet forming unit that forms a sheet from a raw material containing fibers, and a removed material recovered from the raw material without being used for manufacturing the sheet. Recovery box, a suction part capable of sucking air in the recovery box from the outside of the recovery box, and suction for sucking air in the recovery box by the suction part when taking out the removed matter from the recovery box A control unit.
According to the present invention, even if the removed object scatters when the removed object is taken out, the scattered removed object is sucked by the suction portion, and scattering of the removed object to the outside can be suppressed.

In the present invention, the collection box is configured to be openable and closable, and the suction control unit causes the suction unit to perform suction when the collection box is at least in an open state.
According to the present invention, it is possible to suppress scattering of the removed object to the outside when the collection box is at least open.

Further, according to the present invention, the suction control unit starts suction by the suction unit, triggered by an input of an instruction to take out the removed matter.
According to the present invention, it is possible to start suction before the collection box is in the open state, and to prevent the removal object from scattering from the moment when the collection box is opened.

Further, according to the present invention, the suction control unit starts suction by the suction unit when an instruction to take out the removal object is input, and when the recovery box is opened, the suction unit sucks the suction unit. Increase power.
According to the present invention, the suction force can be increased in accordance with the gap that is widened when the collection box is opened, and scattering of the removed material from the gap to the outside can be appropriately suppressed.

Further, according to the present invention, the suction control unit stops the suction after the collection box is closed.
According to the present invention, it is possible to positively suppress the removal object from being scattered to the outside until the collection box is closed.

Further, the present invention includes a defibrating unit for defibrating the raw material in the air, the sheet forming unit is to form a web by depositing defibrated material that has been defibrated in the defibrating unit, The said sheet | seat is formed using a web, and the said collection | recovery box accommodates the removed material collect | recovered without being used for manufacture of the said sheet | seat among the defibrated material defibrated by the said defibrating part.
ADVANTAGE OF THE INVENTION According to this invention, when taking out a removal thing from a collection | recovery box in a dry-type sheet manufacturing apparatus, it becomes possible to suppress the scattering of the removal thing which is easy to fly outside.

In addition, the present invention includes a collection unit that collects the removed matter with a filter, and the collection box accommodates the removed matter collected with the filter, and the suction unit includes the filter. Arranged downstream.
According to the present invention, the removed matter can be efficiently collected by the filter without allowing the removed matter to pass through the suction portion.

Further, in the present invention, a collection bag for collecting the removed material is disposed in the collection box, and a space between the collection box and the collection bag is communicated with a suction space of the suction unit. It has a communication pipe that prevents the collection bag from floating.
According to the present invention, the floating of the collection bag can be suppressed without providing a complicated structure for suppressing the floating of the collection bag.

Further, the present invention is a method for controlling a sheet manufacturing apparatus including a recovery box that forms a sheet from a raw material containing fibers and stores a removed material recovered from the raw material without being used for manufacturing the sheet. When taking out the removed material from the collection box, the air in the collection box is sucked by the suction part that can suck the air in the collection box from the outside of the collection box.
According to the present invention, even if the removed object scatters when the removed object is taken out, the scattered removed object is sucked by the suction portion, and scattering of the removed object to the outside can be suppressed.

The schematic diagram which shows the structure of the sheet manufacturing apparatus which concerns on embodiment of this invention. The figure which shows the external appearance of a sheet manufacturing apparatus. The figure which shows a dust collection part with a periphery structure. The figure which shows the internal structure of a dust collection part. The figure which shows the internal structure of the dust collection part of the state which moved the collection | recovery box below. The flowchart which shows operation | movement of a collection bag exchange process. FIG. 7 is a continuation flowchart of FIG. 6.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, embodiment described below does not limit the content of this invention described in the claim. In addition, not all of the configurations described below are essential constituent requirements of the present invention.

FIG. 1 is a schematic diagram illustrating a configuration of a sheet manufacturing apparatus 100 according to the embodiment.
The sheet manufacturing apparatus 100 described in the present embodiment, for example, after used fiber such as confidential paper as a raw material is defibrated and fiberized by dry process, and then pressurized, heated and cut to obtain new paper. It is an apparatus suitable for manufacturing. By mixing various additives with the fiberized raw material, it is possible to improve the bond strength and whiteness of paper products and add functions such as color, fragrance, and flame resistance according to the application. Also good. In addition, by controlling the density, thickness, and shape of the paper, various thicknesses and sizes of paper such as A4 and A3 office paper and business card paper can be manufactured.
The sheet manufacturing apparatus 100 includes a supply unit 10, a crushing unit 12, a defibrating unit 20, a sorting unit 40, a first web forming unit 45, a rotating body 49, a mixing unit 50, a deposition unit 60, a second web forming unit 70, A conveyance unit 79, a sheet forming unit 80, and a cutting unit 90 are provided.

  Further, the sheet manufacturing apparatus 100 includes humidifying units 202, 204, 206, 208, 210, and 212 for the purpose of humidifying the raw material and / or humidifying a space in which the raw material moves. Specific configurations of the humidifying units 202, 204, 206, 208, 210, and 212 are arbitrary, and examples thereof include a steam type, a vaporization type, a hot air vaporization type, and an ultrasonic type.

  In the present embodiment, the humidifying units 202, 204, 206, and 208 are configured by a vaporization type or warm air vaporization type humidifier. That is, the humidifying units 202, 204, 206, and 208 have a filter (not shown) that partially immerses in water, and supplies humidified air with increased humidity by allowing air to pass through the filter. Further, the humidifying units 202, 204, 206, and 208 may include a heater (not shown) that effectively increases the humidity of the humidified air.

  Moreover, in this embodiment, the humidification part 210 and the humidification part 212 are comprised with an ultrasonic humidifier. In other words, the humidifying units 210 and 212 have a vibrating unit (not shown) that atomizes water and supplies mist generated by the vibrating unit.

  The supply unit 10 supplies raw materials to the crushing unit 12. The raw material from which the sheet manufacturing apparatus 100 manufactures a sheet may be anything as long as it contains fibers, and examples thereof include paper, pulp, pulp sheet, cloth including nonwoven fabric, and woven fabric. In the present embodiment, a configuration in which the sheet manufacturing apparatus 100 uses waste paper as a raw material is illustrated. The supply unit 10 may be configured to include, for example, a stacker that accumulates and accumulates used paper and an automatic input device that sends the used paper from the stacker to the crushing unit 12.

  The crushing unit 12 cuts (crushes) the raw material supplied by the supply unit 10 with a crushing blade 14 into a crushing piece. The rough crushing blade 14 cuts the raw material in the air (in the air) or the like. The crushing unit 12 includes, for example, a pair of crushing blades 14 that are cut with a raw material interposed therebetween, and a drive unit that rotates the crushing blades 14, and can have a configuration similar to a so-called shredder. The shape and size of the coarsely crushed pieces are arbitrary and may be suitable for the defibrating process in the defibrating unit 20. For example, the crushing unit 12 cuts the raw material into pieces of paper having a size of 1 to several cm square or less.

  The crushing unit 12 includes a chute (also referred to as a hopper) 9 that receives the crushing pieces that are cut by the crushing blade 14 and fall. The chute 9 has, for example, a taper shape in which the width gradually decreases in the direction in which the coarsely crushed pieces flow (the traveling direction). Therefore, the chute 9 can receive many coarse fragments. The chute 9 is connected to a tube 2 communicating with the defibrating unit 20, and the tube 2 forms a conveying path for conveying the raw material (crushed pieces) cut by the crushing blade 14 to the defibrating unit 20. . The coarsely crushed pieces are collected by the chute 9 and transferred (conveyed) through the tube 2 to the defibrating unit 20.

  Humidified air is supplied by the humidifying unit 202 to the chute 9 included in the crushing unit 12 or in the vicinity of the chute 9. Thereby, the phenomenon that the crushed material cut | judged with the rough crushing blade 14 adsorb | sucks to the chute | shoot 9 and the inner surface of the pipe | tube 2 by static electricity can be suppressed. In addition, since the crushed material cut by the pulverizing blade 14 is transferred to the defibrating unit 20 together with humidified (high humidity) air, the effect of suppressing adhesion of the defibrated material inside the defibrating unit 20 is also achieved. I can expect. Moreover, the humidification part 202 is good also as a structure which supplies humidified air to the rough crushing blade 14, and neutralizes the raw material which the supply part 10 supplies. Moreover, you may neutralize using an ionizer with the humidification part 202. FIG.

  The defibrating unit 20 defibrates the crushed material cut by the crushing unit 12. More specifically, the defibrating unit 20 defibrates the raw material (crushed pieces) cut by the crushing unit 12 to generate a defibrated material. Here, “defibration” means unraveling a raw material (a material to be defibrated) formed by binding a plurality of fibers into individual fibers. The defibrating unit 20 also has a function of separating substances such as resin particles, ink, toner, and a bleeding inhibitor adhering to the raw material from the fibers.

  What has passed through the defibrating unit 20 is referred to as “defibrated material”. In addition to the defibrated fibers that have been unraveled, the “defibrated material” includes resin particles (resins that bind multiple fibers together), ink, toner, etc. In some cases, additives such as colorants, anti-bleeding agents, paper strength enhancers and the like are included. The shape of the defibrated material that has been unraveled is a string shape or a ribbon shape. The unraveled defibrated material may exist in an unentangled state (independent state) with other undisentangled fibers, or entangled with other undisentangled defibrated material to form a lump. It may exist in a state (a state forming a so-called “dama”).

  The defibrating unit 20 performs defibration by a dry method. Here, performing a process such as defibration in the air (in the air), not in the liquid, is called dry. In the present embodiment, the defibrating unit 20 uses an impeller mill. Specifically, the defibrating unit 20 includes a rotor (not shown) that rotates at high speed, and a liner (not shown) that is positioned on the outer periphery of the rotor. The coarsely crushed pieces cut by the coarse pulverization unit 12 are sandwiched between the rotor of the defibrating unit 20 and the liner and defibrated. The defibrating unit 20 generates an air flow by the rotation of the rotor. With this airflow, the defibrating unit 20 can suck the crushed pieces, which are raw materials, from the tube 2 and convey the defibrated material to the discharge port 24. The defibrated material is sent out from the discharge port 24 to the tube 3 and transferred to the sorting unit 40 through the tube 3.

  Thus, the defibrated material generated in the defibrating unit 20 is conveyed from the defibrating unit 20 to the sorting unit 40 by the air flow generated by the defibrating unit 20. Further, in the present embodiment, the sheet manufacturing apparatus 100 includes a defibrating unit blower 26 that is an airflow generation device, and the defibrated material is conveyed to the sorting unit 40 by the airflow generated by the defibrating unit blower 26. The defibrating unit blower 26 is attached to the pipe 3, sucks air from the defibrating unit 20 together with the defibrated material, and blows it to the sorting unit 40.

  The sorting unit 40 has an inlet 42 through which the defibrated material defibrated from the tube 3 by the defibrating unit 20 flows together with the airflow. The sorting unit 40 sorts the defibrated material to be introduced into the introduction port 42 according to the length of the fiber. Specifically, the sorting unit 40 uses a defibrated material having a size equal to or smaller than a predetermined size among the defibrated material defibrated by the defibrating unit 20 as a first selected material, and a defibrated material larger than the first selected material. Is selected as the second selection. The first selection includes fibers or particles, and the second selection includes, for example, large fibers, undefibrated pieces (crushed pieces that have not been sufficiently defibrated), and defibrated fibers agglomerated or entangled. Including tama etc.

In the present embodiment, the sorting unit 40 includes a drum unit (sieving unit) 41 and a housing unit (covering unit) 43 that accommodates the drum unit 41.
The drum portion 41 is a cylindrical sieve that is rotationally driven by a motor. The drum portion 41 has a net (filter, screen) and functions as a sieve. Based on the mesh, the drum unit 41 sorts a first selection smaller than the mesh opening (opening) and a second selection larger than the mesh opening. As the net of the drum portion 41, for example, a metal net, an expanded metal obtained by extending a cut metal plate, or a punching metal in which a hole is formed in the metal plate by a press machine or the like is used.

The defibrated material introduced into the introduction port 42 is sent into the drum portion 41 together with the air current, and the first selected material falls downward from the mesh of the drum portion 41 by the rotation of the drum portion 41. The second selection that cannot pass through the mesh of the drum portion 41 is caused to flow by the airflow flowing into the drum portion 41 from the introduction port 42, led to the discharge port 44, and sent out to the pipe 8.
The tube 8 connects the inside of the drum portion 41 and the tube 2. The second selection flowed through the pipe 8 flows through the pipe 2 together with the coarsely crushed pieces cut by the coarse crushing section 12 and is guided to the introduction port 22 of the defibrating section 20. As a result, the second selected item is returned to the defibrating unit 20 and defibrated.

  In addition, the first selection material selected by the drum unit 41 is dispersed in the air through the mesh of the drum unit 41 and is applied to the mesh belt 46 of the first web forming unit 45 located below the drum unit 41. Descent towards.

  The first web forming part 45 (separation part) includes a mesh belt 46 (separation belt), a tension roller 47, and a suction part (suction mechanism) 48. The mesh belt 46 is an endless belt, is suspended on three tension rollers 47, and is conveyed in the direction indicated by the arrow in the drawing by the movement of the tension rollers 47. The surface of the mesh belt 46 is constituted by a net in which openings of a predetermined size are arranged. Among the first selections descending from the selection unit 40, fine particles having a size that passes through the meshes fall below the mesh belt 46, and fibers of a size that cannot pass through the meshes accumulate on the mesh belt 46, and mesh. It is conveyed along with the belt 46 in the direction of the arrow. The fine particles falling from the mesh belt 46 include defibrated materials that are relatively small or low in density (resin particles, colorants, additives, etc.), and the sheet manufacturing apparatus 100 does not use them for manufacturing the sheet S. It is a removed product.

During the normal operation of manufacturing the sheet S, the mesh belt 46 moves at a constant speed V1. Here, the normal operation is an operation excluding the start control and stop control of the sheet manufacturing apparatus 100 to be described later. More specifically, the sheet manufacturing apparatus 100 manufactures a sheet S having a desired quality. It points to while doing.
Accordingly, the defibrated material that has been defibrated by the defibrating unit 20 is sorted into the first sorted product and the second sorted product by the sorting unit 40, and the second sorted product is returned to the defibrating unit 20. Further, the removed material is removed from the first selected material by the first web forming unit 45. The remainder obtained by removing the removed material from the first selection is a material suitable for manufacturing the sheet S, and this material is deposited on the mesh belt 46 to form the first web W1.

  The suction unit 48 sucks air from below the mesh belt 46. The suction part 48 is connected to the dust collecting part 27 via the pipe 23. The dust collection unit 27 separates the fine particles from the airflow. A collection blower 28 is installed downstream of the dust collection unit 27, and the collection blower 28 functions as a dust collection suction unit that sucks air from the dust collection unit 27. Further, the air discharged from the collection blower 28 is discharged out of the sheet manufacturing apparatus 100 through the pipe 29.

  In this configuration, air is sucked from the suction portion 48 through the dust collection portion 27 by the collection blower 28. In the suction part 48, the fine particles passing through the mesh of the mesh belt 46 are sucked together with air and sent to the dust collecting part 27 through the pipe 23. The dust collection unit 27 separates and accumulates the fine particles that have passed through the mesh belt 46 from the airflow.

  Accordingly, the first web W1 is formed on the mesh belt 46 by depositing fibers obtained by removing the removed material from the first selected material. By the suction of the collection blower 28, the formation of the first web W1 on the mesh belt 46 is promoted, and the removed material is quickly removed.

  Humidified air is supplied to the space including the drum unit 41 by the humidifying unit 204. The humidified air can humidify the first selection item inside the selection unit 40 and weaken the adhesion of the first selection item to the mesh belt 46 due to the electrostatic force. Therefore, it is possible to easily peel the first selected item from the mesh belt 46 and to prevent the first selected item from adhering to the rotating body 49 or the inner wall of the housing part 43 due to electrostatic force. In addition, the removal object can be efficiently sucked by the suction portion 48.

  In the sheet manufacturing apparatus 100, the configuration for sorting and separating the first defibrated material and the second defibrated material is not limited to the sorting unit 40 including the drum unit 41. For example, you may employ | adopt the structure which classifies the defibrated material processed by the defibrating unit 20 with a classifier. As the classifier, for example, a cyclone classifier, an elbow jet classifier, or an eddy classifier can be used. If these classifiers are used, it is possible to sort and separate the first sort and the second sort. Furthermore, the above classifier can realize a configuration in which removed products including relatively small ones having a low density (resin particles, colorants, additives, etc.) among the defibrated materials are separated and removed. For example, it is good also as a structure which removes the microparticles | fine-particles contained in a 1st selection material from a 1st selection material by a classifier. In this case, for example, the second sorted product may be returned to the defibrating unit 20, the removed product is collected by the dust collecting unit 27, and the first sorted product excluding the removed product may be sent to the pipe 54. .

  In the transport path of the mesh belt 46, air containing mist is supplied by the humidifying unit 210 to the downstream side of the sorting unit 40. The mist that is fine particles of water generated by the humidifying unit 210 descends toward the first web W1 and supplies moisture to the first web W1. Thereby, the amount of moisture contained in the first web W1 is adjusted, and adsorption of fibers to the mesh belt 46 due to static electricity can be suppressed.

  The sheet manufacturing apparatus 100 includes a rotating body 49 that divides the first web W <b> 1 accumulated on the mesh belt 46. The first web W <b> 1 is peeled off from the mesh belt 46 at a position where the mesh belt 46 is turned back by the roller 47 and is divided by the rotating body 49.

  The first web W1 is a soft material in which fibers are accumulated to form a web shape, and the rotating body 49 loosens the fibers of the first web W1 and processes it into a state in which the resin can be easily mixed by the mixing unit 50 described later. .

Although the structure of the rotating body 49 is arbitrary, in this embodiment, it can be made into the rotating feather shape which has a plate-shaped blade | wing and rotates. The rotating body 49 is disposed at a position where the first web W1 peeled off from the mesh belt 46 and the blades are in contact with each other. Due to the rotation of the rotating body 49 (for example, the rotation in the direction indicated by the arrow R in the figure), the blade collides with the first web W1 which is peeled from the mesh belt 46 and conveyed, and the subdivided body P is generated.
The rotating body 49 is preferably installed at a position where the blades of the rotating body 49 do not collide with the mesh belt 46. For example, the distance between the tip of the blade of the rotating body 49 and the mesh belt 46 can be set to 0.05 mm or more and 0.5 mm or less. One web W1 can be divided efficiently.

The subdivided body P divided by the rotating body 49 descends inside the tube 7 and is transferred (conveyed) to the mixing unit 50 by the airflow flowing inside the tube 7.
Further, humidified air is supplied to the space including the rotating body 49 by the humidifying unit 206. Thereby, the phenomenon that fibers are adsorbed by static electricity to the inside of the tube 7 and the blades of the rotating body 49 can be suppressed. In addition, since high-humidity air is supplied to the mixing unit 50 through the pipe 7, the influence of static electricity can also be suppressed in the mixing unit 50.

The mixing unit 50 includes an additive supply unit 52 (resin supply unit) that supplies an additive containing resin, a tube 54 that communicates with the tube 7 and flows an air stream including the subdivided body P, and a mixing blower 56. The subdivided body P is a fiber obtained by removing the removed material from the first sorted product that has passed through the sorting unit 40 as described above. The mixing unit 50 mixes an additive containing a resin with the fibers constituting the subdivided body P.
In the mixing unit 50, an air flow is generated by the mixing blower 56, and is conveyed while mixing the subdivided body P and the additive in the pipe 54. Moreover, the subdivided body P is loosened in the process of flowing through the inside of the tube 7 and the tube 54, and becomes a finer fiber.

  The additive supply unit 52 (resin storage unit) is connected to a resin cartridge (not shown) that accumulates the additive, and supplies the additive inside the resin cartridge to the tube 54. The additive supply unit 52 temporarily stores an additive composed of fine powder or fine particles inside the resin cartridge. The additive supply unit 52 includes a discharge unit 52a (resin supply unit) that sends the additive once stored to the pipe 54.

  The discharge unit 52 a includes a feeder (not shown) that sends the additive stored in the additive supply unit 52 to the pipe 54, and a shutter (not shown) that opens and closes a pipeline that connects the feeder and the pipe 54. . When this shutter is closed, the pipe line or opening connecting the discharge part 52a and the pipe 54 is closed, and supply of the additive from the additive supply part 52 to the pipe 54 is cut off.

  In the state where the feeder of the discharge unit 52a is not operating, the additive is not supplied from the discharge unit 52a to the tube 54. However, when a negative pressure is generated in the tube 54, the feeder of the discharge unit 52a is stopped. Even so, the additive may flow to the tube 54. By closing the discharge part 52a, the flow of such an additive can be reliably interrupted.

  The additive supplied by the additive supply unit 52 includes a resin for binding a plurality of fibers. Thermoplastic resin or thermosetting resin, for example, AS resin, ABS resin, polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylic resin, polyester resin, polyethylene terephthalate, polyphenylene ether, polybutylene terephthalate, nylon, polyamide, polycarbonate Polyacetal, polyphenylene sulfide, polyether ether ketone, and the like. These resins may be used alone or in combination. That is, the additive may contain a single substance, may be a mixture, or may contain a plurality of types of particles each composed of a single substance or a plurality of substances. The additive may be in the form of a fiber or powder.

The resin contained in the additive is melted by heating and binds a plurality of fibers. Accordingly, in a state where the resin is mixed with the fibers and not heated to a temperature at which the resin melts, the fibers are not bound to each other.
In addition to the resin that binds the fiber, the additive supplied by the additive supply unit 52 includes a colorant for coloring the fiber, fiber aggregation, and resin aggregation depending on the type of sheet to be manufactured. It may also contain a coagulation inhibitor for suppressing odor, and a flame retardant for making the fibers difficult to burn. Moreover, the additive which does not contain a colorant may be colorless or light enough to be considered colorless, or may be white.

  Due to the air flow generated by the mixing blower 56, the subdivided body P descending the tube 7 and the additive supplied by the additive supply unit 52 are sucked into the tube 54 and pass through the mixing blower 56. The fibers constituting the subdivided body P and the additive are mixed by the air flow generated by the mixing blower 56 and / or the action of the rotating part such as the blades of the mixing blower 56, and this mixture (the first sort and the additive) ) Is transferred to the deposition section 60 through the tube 54.

  In addition, the mechanism which mixes a 1st selection material and an additive is not specifically limited, It may stir with the blade | wing which rotates at high speed, and uses rotation of a container like a V-type mixer. These mechanisms may be installed before or after the mixing blower 56.

  The depositing unit 60 deposits the defibrated material defibrated by the defibrating unit 20. More specifically, the depositing unit 60 introduces the mixture that has passed through the mixing unit 50 from the introduction port 62, loosens the entangled defibrated material (fibers), and lowers it while dispersing it in the air. Furthermore, when the additive resin supplied from the additive supply unit 52 is fibrous, the deposition unit 60 loosens the entangled resin. Thereby, the deposition unit 60 can deposit the mixture on the second web forming unit 70 with good uniformity.

  The depositing unit 60 includes a drum unit 61 and a housing unit (covering unit) 63 that accommodates the drum unit 61. The drum unit 61 is a cylindrical sieve that is rotationally driven by a motor. The drum portion 61 has a net (filter, screen) and functions as a sieve. Due to the mesh, the drum portion 61 allows fibers and particles having a smaller mesh opening (opening) to pass through and lowers the drum portion 61 from the drum portion 61. The configuration of the drum unit 61 is the same as the configuration of the drum unit 41, for example.

  In addition, the “sieving” of the drum unit 61 may not have a function of selecting a specific object. That is, the “sieving” used as the drum part 61 means a thing provided with a net, and the drum part 61 may drop all of the mixture introduced into the drum part 61.

  A second web forming unit 70 is disposed below the drum unit 61. The 2nd web formation part 70 accumulates the passage thing which passed the accumulation part 60, and forms the 2nd web W2. The 2nd web formation part 70 has the mesh belt 72, the roller 74, and the suction mechanism 76, for example.

  The mesh belt 72 is an endless belt, is suspended on a plurality of rollers 74, and is conveyed in the direction indicated by the arrow in the drawing by the movement of the rollers 74. The mesh belt 72 is made of, for example, metal, resin, cloth, or non-woven fabric. The surface of the mesh belt 72 is configured by a net having openings of a predetermined size. Among the fibers and particles descending from the drum unit 61, fine particles having a size that passes through the mesh drops to the lower side of the mesh belt 72, and fibers having a size that cannot pass through the mesh are deposited on the mesh belt 72. 72 is conveyed in the direction of the arrow. During the operation of manufacturing the sheet S, the mesh belt 72 moves at a constant speed V2.

The mesh of the mesh belt 72 is fine and can be sized so that most of the fibers and particles descending from the drum portion 61 are not allowed to pass through.
The suction mechanism 76 is provided below the mesh belt 72 (on the side opposite to the accumulation unit 60 side). The suction mechanism 76 includes a suction blower 77, and can generate an air flow (an air flow directed from the accumulation portion 60 toward the mesh belt 72) downward to the suction mechanism 76 by the suction force of the suction blower 77.

The mixture dispersed in the air by the deposition unit 60 is sucked onto the mesh belt 72 by the suction mechanism 76. Thereby, formation of the 2nd web W2 on the mesh belt 72 can be accelerated | stimulated, and the discharge speed from the deposition part 60 can be enlarged. Furthermore, the suction mechanism 76 can form a downflow in the dropping path of the mixture, and can prevent the defibrated material and additives from being entangled during the dropping.
The suction blower 77 (deposition suction unit) may discharge the air sucked from the suction mechanism 76 out of the sheet manufacturing apparatus 100 through a collection filter (not shown). Alternatively, the air sucked by the suction blower 77 may be sent to the dust collecting unit 27 and the removed matter contained in the air sucked by the suction mechanism 76 may be collected.

  Humidified air is supplied to the space including the drum unit 61 by the humidifying unit 208. The humidified air can humidify the inside of the accumulation portion 60, suppress the adhesion of fibers and particles to the housing portion 63 due to electrostatic force, and quickly drop the fibers and particles onto the mesh belt 72, so Two webs W2 can be formed.

  As described above, the second web W <b> 2 in a state of containing a large amount of air and softly bulging is formed by passing through the deposition unit 60 and the second web forming unit 70 (web forming step). The second web W2 deposited on the mesh belt 72 is conveyed to the sheet forming unit 80.

  In the conveyance path of the mesh belt 72, air containing mist is supplied by the humidifying unit 212 to the downstream side of the deposition unit 60. Thereby, the mist which the humidification part 212 produces | generates is supplied to the 2nd web W2, and the moisture content which the 2nd web W2 contains is adjusted. Thereby, adsorption | suction etc. of the fiber to the mesh belt 72 by static electricity can be suppressed.

  The sheet manufacturing apparatus 100 is provided with a conveyance unit 79 that conveys the second web W2 on the mesh belt 72 to the sheet forming unit 80. The conveyance unit 79 includes, for example, a mesh belt 79a, a roller 79b, and a suction mechanism 79c.

  The suction mechanism 79c generates an air flow to suck the second web W2, and causes the mesh belt 79a to attract the second web W2. The mesh belt 79a moves by the rotation of the roller 79b, and conveys the second web W2 to the sheet forming unit 80. The moving speed of the mesh belt 72 and the moving speed of the mesh belt 79a are the same, for example. Thus, the conveyance unit 79 peels and conveys the second web W2 formed on the mesh belt 72 from the mesh belt 72.

  The sheet forming unit 80 forms the sheet S from the deposit accumulated in the accumulation unit 60. More specifically, the sheet forming unit 80 forms the sheet S by pressurizing and heating the second web W2 (deposit) deposited on the mesh belt 72 and conveyed by the conveying unit 79. In the sheet forming unit 80, the fibers of the defibrated material included in the second web W2 and the additive are heated to bind the plurality of fibers in the mixture to each other via the additive (resin). .

The sheet forming unit 80 includes a pressurizing unit 82 that pressurizes the second web W2 and a heating unit 84 that heats the second web W2 pressurized by the pressurizing unit 82.
The pressurizing unit 82 includes a pair of calendar rollers 85 and presses the second web W2 with a predetermined nip pressure. The second web W2 is reduced in thickness by being pressurized, and the density of the second web W2 is increased. One of the pair of calendar rollers 85 is a driving roller driven by a motor (not shown), and the other is a driven roller. The calendar roller 85 is rotated by a driving force of a motor (not shown) and conveys the second web W <b> 2 having a high density by pressurization toward the heating unit 84.

  The heating unit 84 can be configured using, for example, a heating roller (heater roller), a hot press molding machine, a hot plate, a hot air blower, an infrared heater, and a flash fixing device. In the present embodiment, the heating unit 84 includes a pair of heating rollers 86. The heating roller 86 is heated to a preset temperature by a heater installed inside or outside. The heating roller 86 heats the second web W <b> 2 pressed by the calendar roller 85 to form the sheet S. One of the pair of heating rollers 86 is a driving roller driven by a motor (not shown), and the other is a driven roller. The heating roller 86 is rotated by a driving force of a motor (not shown) and conveys the heated sheet S toward the cutting unit 90.

  The number of calendar rollers 85 provided in the pressurizing unit 82 and the number of heating rollers 86 provided in the heating unit 84 are not particularly limited.

  The cutting unit 90 cuts the sheet S formed by the sheet forming unit 80. In the present embodiment, the cutting unit 90 includes a first cutting unit 92 that cuts the sheet S in a direction that intersects the conveyance direction of the sheet S, and a second cutting unit 94 that cuts the sheet S in a direction parallel to the conveyance direction. Have. The second cutting unit 94 cuts the sheet S that has passed through the first cutting unit 92, for example.

  Thus, a single-sheet sheet S having a predetermined size is formed. The cut sheet S is discharged to the discharge unit 96. The discharge unit 96 includes a discharge tray for discharging sheets S of a predetermined size or a stacker for storing the sheets S.

Here, FIG. 2 shows an appearance of the sheet manufacturing apparatus 100.
As shown in FIG. 2, the sheet manufacturing apparatus 100 includes a housing 220 that accommodates the above-described components of the sheet manufacturing apparatus 100. The housing 220 includes a front portion 221 that forms the front surface, a side surface portion 222 that forms the left and right side surfaces, a back surface portion 223 that forms the back surface, and an upper surface portion 224 that forms the upper surface.

The front part 221 is provided with a part of the supply part 10 exposed, a display part 160 for displaying various information, and an open / close door 230. The display unit 160 includes a display panel capable of displaying various types of information and a touch panel disposed on the display panel, and can detect a user operation using the touch panel. The open / close door 230 is a door that opens and closes the additive cartridge so as to be exposed.
The right side surface part 222 has an openable and closable dust collecting part covering part 231 that covers the dust collecting part 27. By opening the dust collecting part covering part 231, it becomes possible to access a collection box 261, which will be described later, included in the dust collecting part 27 from the outside. The dust collecting portion covering portion 231 can be held in a closed state by an electromagnetic lock 235 (FIG. 3).

FIG. 3 is a view showing the dust collection unit 27 together with the peripheral configuration. FIG. 4 is a diagram showing the internal structure of the dust collecting unit 27. The sheet manufacturing apparatus 100 includes a control unit 150 (FIG. 3) that controls each part of the sheet manufacturing apparatus 100 including the dust collection unit 27, the display unit 160, and the electromagnetic lock 235.
As shown in FIG. 3 and FIG. 4, the dust collecting unit 27 includes a collecting unit 241 that collects the removed material from the air containing the removed material that is not used for manufacturing the sheet S using the filter 240, and the collecting unit 241. And a collection box 261 that is connected to be movable up and down via an elevating mechanism 251.

The collection unit 241 is provided with a first housing 242 that accommodates the plurality of filters 240 and a second chamber that is provided in an upper portion of the first housing 242 and forms a chamber into which air from which the removed matter is removed by the filter 240 flows. A housing 243. The first housing 242 is connected to the pipe 23 connected below the mesh belt 46 of the first web forming portion 45. The second housing 243 is connected to a collection blower 28 that functions as a dust collection suction section.
The collection blower 28 operates under the control of the control unit 150 and sucks air in the second housing 243. That is, the collection blower 28 is located downstream of the filter 240 and sucks air containing the removed material below the mesh belt 46 through the pipe 23 into the first housing 242 communicating with the filter 240.

A partition plate 244 is provided between the first housing 242 and the second housing 243. A plurality (eight in this configuration) of filters 240 are provided on the lower surface of the partition plate 244 with a gap therebetween.
These filters 240 have a hollow cylindrical shape inside, and the internal space of each filter 240 communicates with the second housing 243. The removed matter contained in the air flowing into the first housing 242 is collected by each filter 240, and the air from which the removed matter has been removed flows into the second housing 243 through the internal space of each filter 240. . Note that the air that has passed through the collection blower 28 from the second housing 243 is discharged out of the sheet manufacturing apparatus 110.
In this configuration, the filter area can be efficiently secured by providing the plurality of cylindrical filters 240. The shape and number of the filters 240 may be changed as appropriate.

  Compressed air pipes 246 are connected to areas corresponding to the filters 240 on the upper surface of the second housing 243, respectively. Each of the compressed air pipes 246 is provided with an open / close mechanism that is supplied with compressed air supplied from the compressor 247 (FIG. 3) and is controlled to open and close by the control unit 150. The controller 150 opens the opening / closing mechanism, whereby compressed air is supplied into each filter 240. The removed matter collected on the filter 240 by the compressed air is separated from the surface of the filter 240 and guided to the collection box 261 below the filter 240 by the action of gravity.

FIG. 5 is a view showing the internal structure of the dust collecting portion 27 in a state where the collection box 261 is moved downward.
The collection box 261 has a box shape that is open at the top and recessed downward, and functions as a container that houses the removed material collected in the dust collection unit 27. In the collection box 261, a collection bag 262 for collecting the removed material is arranged.
More specifically, the collection bag 262 is attached to the collection box 261 with its opening facing upward, and collects the removed material falling toward the collection box 261. With this collection bag 262, the removed items can be taken out from the collection box 261 as a whole. An arbitrary bag such as a plastic bag can be applied to the collection bag 262.

As shown in FIGS. 3 to 5, the dust collection unit 27 includes a communication pipe 265 that communicates the collection box 261 and the second housing 243.
Specifically, one end of the communication pipe 265 communicates with a space KA (FIG. 4) between the collection box 261 and the collection bag 262 by being connected to the collection box 261. The other end of the communication pipe 265 communicates with the space KB (FIG. 4) in the second casing 243 by being connected to the second casing 243.
Since the collection blower 28 sucks the air in the second casing 243, the space in the second casing 243 becomes lower than that in the first casing 242 when the collection blower 28 is activated. With this communication pipe 265, the space KA between the collection box 261 and the collection bag 262 can be set to a lower pressure than the space KC in the first housing 242 (FIG. 4). Therefore, the collection bag 262 can be drawn toward the collection box 261 and the collection bag 262 can be prevented from floating.

The communication pipe 265 is formed of a flexible hose using a rubber material, a resin material, or the like, and does not prevent the collection box 261 from being raised and lowered by the lifting mechanism 251.
In addition, although the case where the other end of the communication pipe 265 is communicated with the second housing 243 has been described, the floating of the collection bag 262 can be suppressed by communicating with any part of the suction space of the collection blower 28. Also good. For example, even if the other end of the communication pipe 265 is connected to the space KC in the first housing 242 and the space KA is equal in pressure to the space KC, the collection bag 262 can be prevented from floating.

The lifting mechanism 251 will be described.
The lifting mechanism 251 of this configuration is an X link type lifting mechanism using an X link mechanism. Specifically, it has a first link 252 and a second link 253 that constitute an X link mechanism, and one end 252A of the first link 252 is rotatably connected to the first housing 242 and the second link 253 One end 253A is rotatably connected to the collection box 261.
The other end 252B of the first link 252 is connected to the collection box 261 so as to be movable in the horizontal direction by a slide mechanism 254 provided in the collection box 261. The other end 253B of the second link 253 is coupled to the first housing 242 so as to be movable in the horizontal direction by a slide mechanism 255 provided in the first housing 242.

Further, the first housing 242 is provided with a handle 257 that is an operation part operated by the user. By rotating the handle 257, the first link 252 and the second link 253 are activated, and the collection box 261 is moved between the upper position shown in FIG. 4 and the lower position shown in FIG. In the upper position shown in FIG. 4, the collection box 261 is in a state of closing the lower side of the first housing 242. Further, in the lower position shown in FIG. 5, a gap is formed between the collection box 261 and the first housing 242 so that the collection bag 262 can be taken out from the collection box 261.
The elevating mechanism 251 is not limited to the X link type mechanism, and any mechanism such as a parallel link type can be applied. In addition, the lifting mechanism 251 is not limited to the configuration in which the handle 257 is manually operated, and the lifting mechanism 251 may be operated using a power source such as a motor.

Further, as shown in FIG. 3, the dust collection unit 27 is separated from the remaining amount detection sensor 263 for detecting the remaining amount of the removed matter stored in the collection box 261, and the collection box 261 and the first housing 242. And a box state detection sensor 267 for detecting whether or not it is present.
As shown in FIGS. 4 and 5, the remaining amount detection sensor 263 has a distal end portion 263 </ b> A that is provided in the first housing 242 and faces the recovery box 261 when the recovery box 261 is in the upper position. The remaining amount detection sensor 263 detects the remaining amount of the removed matter in the collection bag 262 by detecting the upper surface of the removed matter in the collection bag 262 by the tip portion 263A. Various sensors can be applied to the remaining amount detection sensor 263.

  The box state detection sensor 267 is connected to the first housing 242 when the collection box 261 moves to the upper position and is connected to the first housing 242 (closed state), or the collection box 261 moves to the lower position. It is a sensor that detects whether or not it is in an open state. The detection results of the remaining amount detection sensor 263 and the box state detection sensor 267 are output to the control unit 150.

  When the removed matter accumulates in the collection bag 262 more than a certain amount, it is necessary to take out the collection bag 262 and replace it with a new collection bag (collection bag from which the removed matter has not been collected) 262 instead. Therefore, the control unit 150 monitors whether or not the removal object is accumulated at a predetermined position or more based on the detection result of the remaining amount detection sensor 263, and when it is determined that the removal object is accumulated at or above the predetermined position, the removal is performed. A collection bag exchange process is executed as a process for prompting removal of the object.

FIG. 6 is a flowchart showing the operation of the collection bag exchange process, and FIG. 7 is a flowchart following FIG.
First, the control unit 150 determines whether or not the sheet manufacturing apparatus 100 is in a stopped state (step S1A), and repeatedly executes the determination process in step S1A until the sheet manufacturing apparatus 100 is in a stopped state. When the stop state is reached (step S1A; YES), the control unit 150 displays a “removed object recovery button” on the display unit 160 as an operation button operable by the user (step S2A). The removed material collection button is an instruction input button that prompts the user to input an instruction to take out the removed material.

When the sheet manufacturing apparatus 100 is not in a stopped state, that is, during a normal operation for manufacturing the sheet S, the control unit 150 operates the collection blower 28 and is not used for manufacturing the sheet S by the dust collection unit 27. Collect the removal. Further, the control unit 150 turns on the electromagnetic lock 235 during the normal operation to hold the dust collection unit cover unit 231 (FIG. 1) in the closed state.
In addition, the control unit 150 supplies the compressed air to each filter 240 through the compressed air pipe 246 at an appropriate timing during normal operation or the like, thereby efficiently removing the collected matter collected in the filter 240 into the collection bag 262. Let them collect well.

  After displaying the removed material collection button on the display unit 160, the control unit 150 determines whether or not the removed material collection button has been operated based on the detection result of the touch panel (step S3A). When the removed material collection button is not operated (step 3A; NO), the control unit 150 repeatedly executes the determination process of step S3A until a predetermined waiting time elapses (step S4A; NO). When the predetermined waiting time has elapsed (step S4A; YES), the control unit 13 executes a process of step S20A described later.

When the removed material collection button is operated (step S3A; YES), the control unit 150 uses this instruction as a trigger to trigger the collection blower 28 with a lower suction force than the suction force during sheet manufacture. Is operated (step S5A). That is, when an instruction to take out the removed material is input from the user, the collection blower 28 is switched to “weak operation”.
This “weak operation” is an operation in which the suction force of the collection blower 28 is suppressed within a range in which the removed material does not leak out of the dust collection unit 27. Specifically, the collection blower 28 is operated at a predetermined rotational speed that is lower than the rotational speed at the time of sheet manufacture.

In addition, the control unit 150 switches off the electromagnetic lock 235 that locks the dust collecting unit cover 231 using an input of an instruction to take out the removed object as a trigger (step S6A). That is, the user or the like can open the dust collection unit cover 231, and even if the dust collection unit cover 231 is opened, the removed material is controlled to a state that does not leak out of the dust collection unit 27.
In addition, when the dust collection part cover part 231 is opened, the operation of the collection blower 28 may be stopped in the case of a configuration in which the removed matter does not leak out without operating the collection blower 28. . For example, when the collection box 261 is in the upper position and the gap between the collection box 261 and the first housing 242 is almost completely closed, the operation of the collection blower 28 shown in step S5A may be omitted. Good.

Next, the control unit 150 determines whether or not the collection box 261 is open based on the box state detection sensor 267 (step S7A).
When the collection box 261 is not in the open state (step S7A; NO), the control unit 150 repeatedly executes the determination process of step S7A until a predetermined waiting time elapses (step S8A; NO). That is, when the lifting mechanism is not operated by the user and the collection box 261 remains in the upper position, the determination process in step S7A is repeatedly executed. When the predetermined waiting time has elapsed (step S8A; YES), the control unit 13 executes the process of step S20A.

When the control unit 150 detects that the collection box 261 is in an open state (step S7A; YES), the detection blower is used as a trigger to make the collection blower 28 more attractive than the “weak operation” in step S5A. Driving with increased "strong driving" (step S9A). That is, when the lifting mechanism 251 is operated by the user and the collection box 261 starts to descend, the collection blower 28 is switched to “strong operation”. This “strong operation” is an operation at a higher rotational speed than at least “weak operation”, and even when the collection box 261 is in an open state, it is possible to secure a sufficient suction force that prevents the removed matter from leaking outside. Driving.
By this strong operation, it is possible to sufficiently suppress a situation in which the outside air is sucked through a gap formed between the collection box 261 and the first housing 242 and the removed matter inside the collection box 261 leaks out. .

While the collection blower 28 is in “strong operation”, the control unit 150 determines whether or not the collection box 261 is closed based on the box state detection sensor 267 (step S10A). Therefore, the collection blower 28 is “strongly operated” until it is detected that the collection box 261 is closed, that is, until the user operates the collection box 261 to the closed state.
Thereby, while the user takes out the collection bag 262 from the collection box 261 and replaces it with a new collection bag 262, it is possible to suppress the situation where the removed material leaks outside.
Note that the control unit 150 performs the determination process of step S10A until the predetermined waiting time set to a time sufficient for replacement of the collection bag 262 elapses during the period in which the collection box 261 is closed (step S11A; NO). Repeatedly. When the predetermined waiting time has elapsed (step S11A; YES), the control unit 13 executes the process of step S20A.

When detecting that the collection box 261 is closed (step S10A; YES), the controller 150 switches the collection blower 28 to “weak operation” using the detection as a trigger (step S12A). Further, the control unit 150 displays a “complete button” on the display unit 160 as an operation button that can be operated by the user (step S13A). This completion button is an instruction input button that prompts the user to input that removal of the removed object has been completed.
When the completion button is not operated (step S14A; NO), the control unit 150 repeatedly executes the determination process of step S14A until a predetermined waiting time elapses (step S15A; NO). When the predetermined waiting time has elapsed (step S14A; YES), the control unit 150 executes the process of step S20A.

  When the completion button is operated (step S14A; YES), the control unit 150 stops the operation of the collection blower 28 (step S16A) and switches on the electromagnetic lock 235 that locks the dust collection unit cover 231. (Step S17A). As a result, when the user operates the completion button after closing the dust collecting portion covering portion 231, the suction by the collection blower 28 is stopped, and the dust collecting portion covering portion 231 is held closed by the electromagnetic lock 235. The

Here, if a predetermined waiting time has elapsed in steps S4A, S8A, S11A, S15A, if the user forgets to operate the operation button, if the collection box 261 has been open for a long time, or Applicable to sensor failure. In this case, the control unit 150 performs a notification process for prompting the user to perform the next operation or displaying predetermined error information on the display unit 160 as a corresponding process (the process of step S20A). In addition, when the sheet manufacturing apparatus 100 has a function of notifying a voice, a voice notification process may be performed.
The above is the operation of the collection exchange process.

As described above, the sheet manufacturing apparatus 100 according to the present embodiment is recovered without being used for manufacturing the sheet S out of the used paper, and the sheet forming unit 80 that forms the sheet S from the used paper that is a raw material containing fibers. And a recovery box 261 for storing the removed material. In addition, the sheet manufacturing apparatus 100 includes a collection blower 28 that functions as a dust collection suction unit that can suck the air in the collection box 261 from the outside of the collection box 261. The control unit 150 functions as a suction control unit that sucks the air in the collection box 261 by the collection blower 28 when taking out the removed matter from the collection box 261.
According to this configuration and the control method, even if the removed object scatters when the removed object is taken out, the scattered removed object is sucked by the collection blower 28. Therefore, when taking out a removal thing, scattering of the removal thing to the exterior can be controlled.

  Further, the sheet manufacturing apparatus 100 includes a defibrating unit 20 that defibrates the raw material in the air, and the sheet forming unit 80 accumulates the defibrated material that has been defibrated by the defibrating unit 20 to deposit the web. The sheet S is formed using a web. And the collection box 261 is a structure which accommodates the removed material collect | recovered without being used for manufacture of the sheet | seat S among the defibrated material defibrated by the defibrating unit 20. Thereby, in the dry-type sheet manufacturing apparatus 100, when taking out a removal thing from the collection box 261, it becomes possible to suppress the removal thing which is easily scattered to the outside.

Further, the collection box 261 is configured to be freely opened and closed by the lifting mechanism 251, and the control unit 150 causes the collection blower 28 to suck when the collection box 261 is at least in an open state. Thereby, scattering of the removed matter to the outside when the collection box 261 is at least open can be suppressed.
Further, the control unit 150 starts the suction by the collection blower 28 triggered by the operation of the removed material collection button, that is, the input of the instruction to take out the removed material. As a result, the suction is started before the collection box 261 is opened, and scattering of the removed matter to the outside can be suppressed from the moment when the collection box 261 is opened.

  Further, the control unit 150 starts suction by the collection blower 28 when an instruction to take out the removed material is input, and increases the suction force by the collection blower 28 when the collection box 261 is opened. . As a result, the suction force can be increased in accordance with the gap that expands when the collection box 261 is opened, and scattering of the removed material from the gap to the outside can be appropriately suppressed.

In addition, since the controller 150 stops the suction by the collection blower 28 after the collection box 261 is closed, it is possible to positively suppress scattering of the removed matter to the outside until the collection box 261 is closed. .
In addition, the collection unit 241 that collects the removed material by the filter 240 has a collection box 261 that accommodates the removed material collected by the filter 240, and the collection blower 28 is disposed downstream of the filter 240. Is done. Thus, the removed matter can be efficiently collected by the filter 240 without allowing the removed matter to pass through the collection blower 28.

  Further, a collection bag 262 for collecting the removed material is disposed in the collection box 261, and the space KA between the collection box 261 and the collection bag 262 is communicated with a space KB that is a suction space for the collection blower 28. And a communication pipe 265 for preventing the collection bag 262 from floating. Thereby, it is possible to suppress the floating of the collection bag 262 without providing a complicated structure for suppressing the floating of the collection bag 262.

  The above embodiment is merely a specific mode for carrying out the present invention described in the claims, and does not limit the present invention. All the configurations described in the above embodiment are essential to the present invention. It is not limited that it is a configuration requirement. Moreover, this invention is not limited to the structure of the said embodiment, In the range which does not deviate from the summary, it can be implemented in a various aspect.

  For example, the sheet manufacturing apparatus 100 is not limited to the sheet S, and may be configured to manufacture a board-shaped or web-shaped product including a hard sheet or a stacked sheet. Further, the sheet S may be paper made of pulp or waste paper, or may be a non-woven fabric containing natural fibers or synthetic resin fibers. The properties of the sheet S are not particularly limited, and may be paper that can be used as recording paper for writing or printing (for example, so-called PPC paper), wallpaper, wrapping paper, colored paper, drawing paper, Kent paper. Etc. When the sheet S is a non-woven fabric, it may be a general non-woven fabric, a fiber board, tissue paper, kitchen paper, cleaner, filter, liquid absorbent material, sound absorber, cushioning material, mat, or the like.

Moreover, although this embodiment demonstrated the case where this invention was applied to the dry sheet manufacturing apparatus 100 which uses water as little as possible, it is not restricted to this. For example, the present invention may be applied to a sheet manufacturing apparatus that manufactures a sheet by a so-called wet method, in which a raw material containing fibers is poured into water and disassembled mainly into a mechanical action and re-made.
Moreover, in the said embodiment, although the structure which the sheet | seat S is cut by the cutting part 90 was illustrated, the structure by which the sheet | seat S processed by the sheet | seat formation part 80 is wound up by a winding roller may be sufficient.

  Further, at least a part of the functional blocks shown in FIG. 3 may be realized by hardware, or may be realized by cooperation of hardware and software. The program executed by the control unit 150 may be stored in a nonvolatile storage unit or other storage device (not shown). Moreover, it is good also as a structure which acquires and runs the program memorize | stored in the external apparatus via a communication part.

  2, 3, 7, 8, 23, 29, 54 ... pipe, 9 ... chute, 10 ... supply unit, 10A ... stacker, 10B ... tray, 10C ... supply unit body, 12 ... crushing unit, 14 ... crushing blade , 15 ... drive part, 16 ... ionizer, 20 ... defibrating part, 22 ... introduction port, 24 ... discharge port, 26 ... defibrating part blower, 27 ... dust collecting part, 28 ... collection blower (suction part), 40 ... Selection part, 41 ... Drum part, 42 ... Introduction port, 43 ... Housing part, 45 ... First web forming part, 46 ... Mesh belt, 47 ... Stretching roller, 48 ... Suction part, 49 ... Rotating body, 50 ... Mixing section, 52 ... additive supply section, 52a ... discharge section, 56 ... mixing blower, 60 ... deposition section, 61 ... drum section, 62 ... inlet, 63 ... housing section, 70 ... second web forming section, 72 ... Mesh belt, 74 ... tension roller, 76 ... suction Structure: 77 ... Suction blower, 79 ... Conveying section, 79a ... Mesh belt, 79b ... Stretching roller, 79c ... Suction mechanism, 80 ... Sheet forming section, 82 ... Pressurizing section, 84 ... Heating section, 85 ... Calendar roller, 86 ... heating roller, 90 ... cutting part, 92 ... first cutting part, 94 ... second cutting part, 96 ... discharge part, 100 ... sheet manufacturing apparatus, 150 ... control part (suction control part), 160 ... display part, 202, 204, 206, 208, 210, 212 ... humidifying part, 220 ... casing, 231 ... dust collecting part covering part, 235 ... electromagnetic lock, 240 ... filter, 241 ... collecting part, 242 ... first casing, 243 ... second housing, 244 ... partition plate, 246 ... compressed air piping, 247 ... compressor, 251 ... lifting mechanism, 261 ... collection box, 262 ... collection bag, 263 ... remaining amount detection Nsa, 265 ... communication pipe, 267 ... box state detection sensor, KA, KB, KC ... space, P ... subdivision body, S ... sheet, W1 ... first web, W2 ... second web.

Claims (9)

A sheet forming section for forming a sheet from a raw material containing fibers;
A collection box for storing removed materials collected without being used for manufacturing the sheet among the raw materials,
A dust collection suction section capable of sucking air in the collection box from outside the collection box;
A suction control section for sucking by the dust collection suction section when removing the removed matter from the collection box;
A sheet manufacturing apparatus comprising: The collection box is configured to be openable and closable,
The sheet manufacturing apparatus according to claim 1, wherein the suction control unit causes the dust collection suction unit to perform suction when the collection box is at least in an open state.   3. The sheet manufacturing apparatus according to claim 2, wherein the suction control unit starts suction by the suction unit, triggered by an input of an instruction to take out the removed material. The suction control unit starts suction by the dust collection suction unit when an instruction to take out the removed material is input, and when the collection box is opened , the suction of the dust collection suction unit The sheet manufacturing apparatus according to claim 3, wherein the force is increased.   The sheet manufacturing apparatus according to claim 2, wherein the suction control unit stops the suction after the collection box is in a closed state. A defibrating unit for defibrating the raw material in air,
The sheet forming unit deposits the defibrated material that has been defibrated in the defibrating unit to form a web, and forms the sheet using the web.
The said collection | recovery box accommodates the removal thing collect | recovered without being used for manufacture of the said sheet | seat among the defibrated material defibrated by the said defibrating part. The sheet manufacturing apparatus described. Having a collection part for collecting the removed matter by a filter;
The collection box contains the removed matter collected by the filter,
The sheet manufacturing apparatus according to any one of claims 1 to 6, wherein the dust collection suction section is disposed downstream of the filter. A collection bag for collecting the removed material is disposed in the collection box,
8. The communication pipe according to claim 1, further comprising: a communication pipe configured to connect a space between the collection box and the collection bag to a suction space of the dust collection suction unit to suppress floating of the collection bag. The sheet manufacturing apparatus according to item. A method for controlling a sheet manufacturing apparatus comprising a recovery box for forming a sheet from a raw material containing fibers and containing a removed material recovered without being used for manufacturing the sheet among the raw materials,
Control of the sheet manufacturing apparatus for sucking air outside the sheet manufacturing apparatus by a dust collecting suction section capable of sucking air in the recovery box from outside the recovery box when taking out the removed matter from the recovery box Method.

Images