JP2018162540A - Sheet production apparatus and method for controlling sheet production apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet production apparatus for producing sheets, capable of rapidly dealing with an inappropriate processing of the raw material and stuff of the sheets.SOLUTION: A sheet production apparatus 100 comprises a supply part 10 for supplying a fiber-containing material MA, a fibrillation part 20 for fibrillating the raw material MA, a heating part 84 for heating a mixture of a defibrated product fibrillated by the fibrillation part 20 and a binder, and a determination part for determining malfunction of the heating part 84. When no malfunction in the heating part 84 is determined by the determination part, the supply part 10 starts supplying of the raw material MA to start the production of the sheet S.SELECTED DRAWING: Figure 1

Description

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

  2. Description of the Related Art Conventionally, a sheet manufacturing apparatus that includes a heating unit that heats a material is known (for example, see Patent Document 1). The sheet manufacturing apparatus described in Patent Document 1 forms a sheet by heating a material containing fibers and a resin.

Japanese Patent Laid-Open No. 2006-130009

As described in Patent Document 1, the sheet manufacturing apparatus has a plurality of steps. For this reason, when the quality of the sheet output from the sheet manufacturing apparatus is insufficient, the manufacture of the sheet is stopped and improvement is attempted. However, there is a possibility that the raw materials and materials existing in each process are wasted. Accordingly, it has been desired to quickly cope with the case where the processing of the sheet manufacturing apparatus is inappropriate.
SUMMARY OF THE INVENTION An object of the present invention is to enable a sheet manufacturing apparatus for manufacturing a sheet to quickly cope with a case where the processing of the raw material or material of the sheet becomes inappropriate.

In order to solve the above problems, the present invention provides a supply unit for supplying a raw material containing fibers, a defibrating unit for defibrating the raw material, a defibrated material defibrated by the defibrating unit, and a binding material. In the sheet manufacturing apparatus having a heating unit that heats the mixture and a determination unit that determines abnormality of the heating unit, when the determination unit determines that there is no abnormality in the heating unit, the supply unit Start supplying raw materials and starting production of sheets.
According to the present invention, since the raw material is supplied when it is determined that there is no abnormality in the heating unit, it is possible to prevent the sheet heated under inappropriate conditions from being output. Therefore, when an abnormality occurs in the heating unit, this abnormality can be detected quickly, and the production of the sheet under inappropriate conditions can be suppressed. For this reason, waste of raw materials and materials can be avoided.

Further, in the above-described configuration, the conveyance unit that conveys at least one of the raw material supplied by the supply unit, the defibrated material defibrated by the defibrating unit, and the mixture, and the conveyance by the conveyance unit are controlled. And a controller configured to start conveyance by the conveyance unit after the determination unit determines that there is no abnormality in the heating unit.
According to this configuration, since it is determined that there is no abnormality in the heating unit and conveyance is started to manufacture the sheet, it is possible to prevent waste of raw materials and materials when the abnormality of the heating unit occurs.

Further, in the above configuration, a temperature detection unit that detects a temperature of the heating unit is provided, and the determination unit is configured to detect the temperature of the heating unit based on the temperature detected by the temperature detection unit after starting the heating of the heating unit. A configuration may be used in which a temperature gradient of temperature rise is obtained and abnormality of the heating unit is determined based on the temperature gradient.
According to this configuration, it is possible to appropriately determine the abnormality of the heating unit based on the temperature gradient during the heating of the heating unit.

Further, in the above configuration, the control unit transports the transport unit by a temperature gradient of the temperature rise of the heating unit obtained based on the temperature detected by the temperature detection unit after starting the heating of the heating unit. The structure which controls the timing which starts this may be sufficient.
According to this structure, since conveyance can be started according to the temperature rise of a heating part, waiting time can be shortened compared with the case where conveyance is started after the temperature rising of a heating part is completed.

Further, in the above configuration, the determination unit, based on the temperature detected when the temperature detection unit performs detection a plurality of times within a preset time after starting the heating of the heating unit, The structure which calculates | requires the temperature gradient of the temperature rising of a heating part may be sufficient.
According to this configuration, it is possible to suppress the influence of noise or the like when obtaining the temperature gradient, and to detect the abnormality of the heating unit with higher accuracy.

Further, in the above configuration, the heating unit includes a heating element that generates heat when energized, and includes a resistance detection unit that detects an electrical resistance of the heating element, and the determination unit includes an electric current detected by the resistance detection unit. The structure which determines the abnormality of the said heating part based on resistance may be sufficient.
According to this configuration, it is possible to quickly detect abnormality of the heating element.

Moreover, the said structure WHEREIN: The structure provided with the crushing part which crushes the raw material which the said supply part supplies, and the structure which disentangles the said raw material coarsely crushed by the said crushing part may be sufficient.
According to this configuration, in the configuration in which the crushed raw material is defibrated and heated, since it is determined that there is no abnormality in the heating unit and the sheet is manufactured by starting conveyance, when an abnormality occurs in the heating unit The waste of the raw material can be prevented.

Moreover, the said structure WHEREIN: The structure which supplies the said raw material crushed beforehand to the said fibrillation part may be sufficient as the said supply part.
According to this configuration, in the configuration in which the crushed raw material is defibrated and heated, since it is determined that there is no abnormality in the heating unit and the sheet is manufactured by starting conveyance, when an abnormality occurs in the heating unit The waste of the raw material can be prevented.

Moreover, in order to solve the said subject, this invention combines the supply part which supplies the raw material containing a fiber, the defibrating part which disentangles the said raw material, the defibrated material defibrated by the said defibrating part, A control method for a sheet manufacturing apparatus having a heating unit for heating a mixture with a material and a determination unit for determining abnormality of the heating unit, wherein the determination unit determines that the heating unit is normal In this case, the supply of the raw material by the supply unit is started to start manufacturing the sheet.
According to the present invention, since the raw material is supplied when it is determined that there is no abnormality in the heating unit, it is possible to prevent the sheet heated under inappropriate conditions from being output. Therefore, when an abnormality occurs in the heating unit, this abnormality can be detected quickly, and the production of the sheet under inappropriate conditions can be suppressed. For this reason, waste of raw materials and materials can be avoided.

The schematic diagram which shows the structure of the sheet manufacturing apparatus which concerns on embodiment. The schematic diagram which shows the structure of the heating part in a 1st position. The schematic diagram which shows the structure of the heating part in a 2nd position. The schematic diagram which shows an example of a displacement mechanism. The schematic diagram which shows an example of a displacement mechanism. The schematic diagram which shows the structure of an additive supply part. The block diagram which shows the structure of the control system of a sheet manufacturing apparatus. The block diagram which shows the functional structure of a control part and a memory | storage part. The flowchart which shows operation | movement of a sheet manufacturing apparatus. The figure which shows the example of a display screen. The flowchart which shows operation | movement of a sheet manufacturing apparatus. The timing chart which shows the operation example of a sheet manufacturing apparatus. The flowchart which shows operation | movement of a sheet manufacturing apparatus. The flowchart which shows operation | movement of a sheet manufacturing apparatus. The figure which shows the operation example of a sheet manufacturing apparatus. The figure which shows the operation example of a sheet manufacturing apparatus. The timing chart which shows the operation example of a sheet manufacturing apparatus.

  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.

1. Overall Configuration FIG. 1 is a schematic diagram showing a configuration of a sheet manufacturing apparatus 100 according to an embodiment to which the present invention is applied.
The sheet manufacturing apparatus 100 described in the present embodiment is a new paper by, for example, dry-filamentizing and fiberizing a raw material MA, which is used used paper such as confidential paper, and then pressurizing, heating, and cutting. It is a suitable apparatus for manufacturing. By mixing various additives with fiber material MA, the bonding strength and whiteness of paper products can be improved and functions such as color, fragrance and flame retardancy can be added according to the application. Or you may. In addition, by controlling the density, thickness, and shape of the paper, it is possible to manufacture paper of various thicknesses and sizes according to the application, such as office paper and business card paper of standard sizes such as A4 and A3. be able to.

  The sheet manufacturing apparatus 100 includes a manufacturing unit 102 and a control device 110. 102 manufactures a sheet. The manufacturing unit 102 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 depositing unit 60, a second web forming unit 70, and a conveyance. A part 79, a sheet forming part 80, and a cutting part 90.

  In the following description, the raw material refers to the raw material MA. The material of the sheet S refers to a material obtained by processing the raw material MA by each part of the manufacturing unit 102 and used before the sheet S, that is, a material used for manufacturing the sheet S. Specifically, the crushing unit 12, the defibrating unit 20, the sorting unit 40, the first web forming unit 45, the rotating body 49, the mixing unit 50, the deposition unit 60, the second web forming unit 70, and the pressurizing unit. The thing after the process processed by 82 is called a material. The material includes a crushed material, a defibrated material, a first web W1, a mixture, a second web W2, and the like, which will be described later. A material in which these materials are heated by the heating unit 84 of the sheet forming unit 80 is referred to as a sheet S.

  The sheet manufacturing apparatus 100 also includes humidification units 202, 204, 206, 208, 210, and 212 that humidify the raw material MA and the material. The humidifiers 202, 204, 206, 208, 210, 212 humidify the material and / or the space in which the material moves. Specific configurations of the humidifying units 202, 204, 206, 208, 210, and 212 are arbitrary, and 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 wets 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 (raw material supply unit) supplies the raw material MA to the crushing unit 12. The raw material MA with 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 MA is illustrated. Waste paper is paper that has been used at least once for printing or writing, and is often attached with toner or ink.

  The supply unit 10 includes, for example, a plurality of stackers 11 (accommodating units) that accommodate the raw material MA. In each stacker 11, waste paper that is the raw material MA is accumulated and accumulated. The supply unit 10 can supply waste paper to the crushing unit 12 from any of the plurality of stackers 11. The supply unit 10 includes an automatic feeding device that selects any one of the plurality of stackers 11 and sends used paper from the selected stacker 11 to the crushing unit 12. The stacker 11 selected by the supply unit 10 is specified by the control of the control device 110.

  The crushing unit 12 cuts (crushes) the raw material MA supplied from the supply unit 10 with a crushing blade 14 into a crushing piece. The rough crushing blade 14 cuts the raw material MA 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 the raw material MA interposed therebetween, and a drive unit that rotates the crushing blades 14, and can be configured similarly 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 MA into pieces of paper having a size of 1 to several cm square or less.

  The crushing unit 12 includes a chute (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 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 crushed blade 14 adsorb | sucks to the chute | shoot 9 or 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 MA 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 crushed pieces cut by the crushing unit 12 to generate a defibrated material. Here, “defibrating” means unraveling a material to be defibrated, in which a plurality of fibers are bound, 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 material to be defibrated 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 from the tube 2 and transport 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 41 (sieving unit) 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 part 41, for example, a metal net, an expanded metal obtained by stretching 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 can be 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 unit 45 (separation unit) includes a mesh belt 46 (separation belt), a roller 47, and a suction unit (suction mechanism) 48. The mesh belt 46 is an endless belt, is suspended by three rollers 47, and is conveyed in the direction indicated by the arrow in the drawing by the movement of the 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 together with the belt 46 in the direction of arrow V1. 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 driving operation for manufacturing the sheet S, the mesh belt 46 moves at the speed V1. The conveyance speed V1 of the mesh belt 46 and the start and stop of conveyance by the mesh belt 46 are controlled by the control device 110.

Here, during operation means that the sheet manufacturing apparatus 100 is manufacturing the sheet S. For example, a start sequence that is executed when the sheet manufacturing apparatus 100 is started, a stop sequence that is executed when the sheet manufacturing apparatus 100 is stopped, and an operation that is not performed while the sheet manufacturing apparatus 100 starts from a stopped state.
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 unit 48 is connected to the dust collection unit 27 (dust collection device) via the tube 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 is humidified in the sorting unit 40 by the humidified air. Thereby, the adhesion of the first selection to the mesh belt 46 due to the electrostatic force can be weakened, and the first selection can be easily separated from the mesh belt 46. Furthermore, it is possible to suppress the first selected item from adhering to the rotating body 49 and the inner wall of the housing part 43 due to the 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 the resin in a state where the resin can be easily mixed in the mixing unit 50.

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 W <b> 1 that is peeled from the mesh belt 46 and is transported, 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. In this case, the rotating body 49 causes the mesh belt 46 to be damaged without being damaged. 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 that supplies an additive containing a resin, a tube 54 that communicates with the tube 7 and through which an airflow including the subdivided body P flows, 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. The additive acts, for example, as a binder that binds the fibers.
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.

  As shown in FIG. 6, an additive cartridge 501 (cartridge) that accumulates additives is detachably attached to the additive supply unit 52. The additive supply unit 52 supplies the additive in the additive cartridge 501 to the pipe 54. A configuration may be provided in which the additive cartridge 501 mounted on the additive supply unit 52 is replenished with the additive. The configuration of the additive supply unit 52 will be described later with reference to FIG.

  The additive contained in the additive cartridge 501 and supplied by the additive supply unit 52 includes a resin for binding a plurality of fibers. The resin contained in the additive is a thermoplastic resin or a thermosetting resin. For example, AS resin, ABS resin, polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylic resin, polyester resin, polyethylene terephthalate, polyphenylene ether, poly Butylene 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 action of the air flow generated by the mixing blower 56 and / or the rotating part such as the blades of the mixing blower 56, and this mixture (the first sort and the addition) is mixed. Mixture) 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 deposition unit 60 and the second web forming unit 70 correspond to a web forming unit. The drum portion 61 corresponds to a sieve portion, and the second web forming portion 70 (particularly, the mesh belt 72) corresponds to a deposition portion.

  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 V2 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 driving operation for manufacturing the sheet S, the mesh belt 72 moves at a constant speed V2. The driving operation is as described above.

  The moving speed V2 of the mesh belt 72 can be regarded as the speed at which the second web W2 is conveyed, and the speed V2 can be referred to as the conveying speed of the second web W2 in the mesh belt 72.

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.

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

The suction mechanism 79c includes an intermediate blower 318 (FIG. 7), and generates an upward airflow on the mesh belt 79a by the suction force of the intermediate blower 318. This air flow sucks the second web W2, and the second web W2 is separated from the mesh belt 72 and is adsorbed by the mesh belt 79a. The mesh belt 79a moves by the rotation of the roller 79b, and conveys the second web W2 to the sheet forming unit 80.
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 pressure unit 82 includes a pair of calendar rollers 85 (pressure rollers), 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 pressurizing unit driving motor 335 (FIG. 7), and the other is a driven roller. The calendar roller 85 is rotated by the driving force of the pressurizing unit driving motor 335 and conveys the second web W <b> 2 having a high density due to 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 heater. 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. One of the pair of heating rollers 86 may be a driving roller driven by a heating unit driving motor 337 (FIG. 7), and the other may be a driven roller. Moreover, the structure by which each heating roller 86 is driven by the heating part drive motor 337 may be sufficient. In this case, a pair of heating unit driving motors 337 may be provided corresponding to each of the one heating roller 86. The heating roller 86 heats the sheet S pressed by the calendar roller 85 to form the sheet S. The heating roller 86 is rotated by the driving force of the heating unit driving motor 337 and conveys the 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.

  Further, in the process of manufacturing the sheet S by the sheet manufacturing apparatus 100, the boundary between the second web W2 and the sheet S is arbitrary. In the present embodiment, in the sheet forming unit 80 that processes the second web W <b> 2 and forms it on the sheet S, the second web W <b> 2 is pressed by the pressing unit 82, and the second web pressed by the pressing unit 82 is used. Further, the sheet heated by the heating unit 84 is called a sheet S. That is, a sheet in which fibers are bound by an additive is called a sheet S. The sheet S is conveyed to the cutting unit 90.

  The cutting unit 90 cuts the sheet S formed by the sheet forming unit 80. In the present embodiment, the cutting unit 90 cuts the sheet S in a direction parallel to the conveyance direction F, and a first cutting unit 92 that cuts the sheet S in a direction that intersects the conveyance direction (F in the drawing) of the sheet S. A second cutting portion 94. 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 tray or a stacker on which a sheet S of a predetermined size is placed.

  In the above configuration, the humidifying units 202, 204, 206, and 208 may be configured by a single vaporizing humidifier. In this case, the humidified air generated by one humidifier may be branched and supplied to the crushing unit 12, the housing unit 43, the pipe 7, and the housing unit 63. This configuration can be easily realized by branching and installing a duct (not shown) for supplying humidified air. Of course, the humidifying sections 202, 204, 206, and 208 can be configured by two or three vaporizing humidifiers.

  Moreover, in the said structure, the humidification parts 210 and 212 may be comprised with one ultrasonic humidifier, and may be comprised with two ultrasonic humidifiers. For example, the air containing the mist which one humidifier produces | generates can be set as the structure branched and supplied to the humidification part 210 and the humidification part 212. FIG.

  Further, the blower included in the sheet manufacturing apparatus 100 described above is not limited to the defibrating unit blower 26, the collection blower 28, the mixing blower 56, the suction blower 77, and the intermediate blower 318. For example, it is of course possible to provide a blower for assisting each blower described above in the duct.

  Moreover, in the said structure, although the coarse crushing part 12 shall crush raw material MA first and shall manufacture the sheet | seat S from the coarsely crushed rough | crude piece, for example, the sheet | seat S is manufactured using a fiber as a raw material. A configuration is also possible. For example, the structure which can be thrown into the drum part 41 by using the fiber equivalent to the defibrated material which the defibrating part 20 defibrated may be sufficient. Moreover, what is necessary is just to set it as the structure which can be thrown into the pipe | tube 54 by using the fiber equivalent to the 1st selection thing isolate | separated from the defibrated material as a raw material. In this case, the sheet S can be manufactured by supplying fibers processed from waste paper or pulp to the sheet manufacturing apparatus 100.

  Further, the sheet manufacturing apparatus 100 is not limited to a configuration in which the supply unit 10 supplies the raw material MA to the crushing unit 12 and the crushed material crushed by the crushing unit 12 is supplied to the defibrating unit 20. For example, the structure which the supply part 10 supplies with respect to the defibrating part 20 by using the coarsely crushed material previously crushed by the coarse crushing part 12 or the shredder may be sufficient. In this case, for example, the user can set the crushed material in the supply unit 10, and the set crushed material may be stored in the supply unit 10.

2. Configuration of Heating Unit The sheet manufacturing apparatus 100 forms the sheet S by heating and pressurizing the second web W2 (the deposit formed by the depositing unit 60) in the above-described sheet forming unit 80. In the example of FIG. 1, the heating unit 84 is simply depicted as a pair of heating rollers 86. Hereinafter, the heating unit 84 of the sheet manufacturing apparatus 100 of the present embodiment will be described in detail.

  FIG.2 and FIG.3 is a figure which shows typically an example of the heating part 84 of this embodiment. The heating unit 84 includes a rotatable first rotating body 181, a rotatable second rotating body 182, and a heating body 183. Each of the first rotating body 181 and the second rotating body 182 has a roller shape having an outer peripheral surface that moves with rotation, and the second web W2 is sandwiched between the first rotating body 181 and the second rotating body 182. The sheet S is configured to be heated and pressed.

  The heating body 183 is disposed so that the outer peripheral surface of the second rotating body 182 can be heated. The heating body 183 that heats the first rotating body 181 is a heating roller having a heater 339a (a heating element). The heater 339a is configured by a so-called resistance heating element, and generates heat when energized under the control of the control device 110. Further, instead of heating the second rotating body 182 by the heating body 183, the heater 339a is constituted by a non-contact heater (for example, an infrared heater or a carbon heater), and the second rotating body 182 is heated by the heater 339a. May be.

  Moreover, the 1st rotary body 181 incorporates the heater 339b (heat generating body). The heater 339b is configured by a so-called resistance heating element, and generates heat when energized under the control of the control device 110.

  Various specific configurations of the heaters 339a and 339b can be cited, for example, ceramic heaters, halogen lamps, and sheathed heaters. The halogen heater is a roller-type heater incorporating a halogen lamp, and is known to have high thermal efficiency and excellent safety. The ceramic heater has a structure in which a heating element is built in alumina or silicon nitride ceramics as a base and is integrated by simultaneous sintering. The heating element is shielded from outside air by ceramics, and is protected and insulated. A sheathed heater is configured as a heating element in which a nichrome wire, which is a resistance heating element, is covered with a metal sheath (sheath), and is known for having a simple configuration. Any of these can be used as the heaters 339a and 339b, and the types, sizes, heat generation capacities, etc. of the heaters 339a and 339b may not be the same, and the temperatures of the first rotating body 181 and the second rotating body 182 are appropriately set. It is appropriately selected for raising and maintaining the temperature.

  The heating unit 84 includes temperature sensors 308 a and 308 b (FIG. 7) as temperature detection units that detect the temperature (for example, the temperature of the outer peripheral surface) of the first rotating body 181 and the second rotating body 182. The heating unit 84 includes a resistance detection unit 309a (FIG. 7) that detects the electrical resistance of the heater 339a and a resistance detection unit 309b (FIG. 7) that detects the electrical resistance of the heater 339b.

  The second rotating body 182 includes a cored bar 184 at the center of rotation and a soft body 185 disposed so as to surround the periphery thereof. The cored bar 184 is made of a metal such as aluminum, iron or stainless steel, and the soft body 185 is made of a rubber such as silicon rubber or urethane rubber. The first rotating body 181 and the heating body 183 are formed of a metal hollow cored bar 187, and a release layer 188 with a fluorine coating is provided on the surface thereof.

  The heating unit 84 of the present embodiment includes a first position (see FIG. 2) for the first rotating body 181 and the second rotating body 182 to sandwich and pressurize the web W, and the first rotating body 181 and the second rotating body 181. The rotating body 182 is configured to be displaceable to a second position (see FIG. 3) that is separated from each other. The first position can be said to be a nip position where the first rotating body 181 and the second rotating body 182 can sandwich the second web W2. On the other hand, the second position can be said to be a position where the first rotating body 181 and the second rotating body 182 are separated and the nip is released.

  The sheet manufacturing apparatus 100 of this embodiment includes a displacement mechanism for displacing the position of the heating unit 84. The displacement mechanism may displace either one of the first rotator 181 and the second rotator 182 or may displace both the first rotator 181 and the second rotator 182. As shown in FIGS. 2 and 3, the first rotating body 181 and the second rotating body 182 are provided in the vicinity of the first rotating body 181 and the second rotating body 182 so as to support the second web W <b> 2. You may make it the rotary body 181 and the 2nd rotary body 182 not contact the 2nd web W2. The support portion 186 is provided at each of the upstream position in the transport direction and the downstream position in the transport direction of the second web W2 with respect to the sandwiching portion (nip portion) between the first rotating body 181 and the second rotating body 182.

4 and 5 are diagrams schematically showing an example of the displacement mechanism of the present embodiment.
The displacement mechanism 190 includes a first bearing portion 193 that rotatably supports the rotating shaft 191 of the first rotating body 181, a second bearing portion 194 that rotatably supports the rotating shaft 192 of the second rotating body 182, It has 1 rod 195a and 2nd rod 195b. The first bearing portion 193 and the second bearing portion 194 are connected to each other so as to be rotatable (relatively movable) around the rotation shaft 196. One end side of the first rod 195a is provided in the second bearing portion 194 so as to be rotatable around the rotation shaft 197a, and one end side of the second rod 195b is provided in the first bearing portion 193 so as to be rotatable around the rotation shaft 197b. Yes. The first rod 195a is provided with a biasing member 198 (spring). One end side of the biasing member 198 is connected to the rotating shaft 197a, and the other end side of the biasing member 198 is connected to the other end side 199 of the second rod 195b. The displacement mechanism 190 has a drive unit that rotationally drives the second rod 195b around the rotation shaft 197b.

FIG. 4 shows a state when the heating unit 84 is at the second position, and FIG. 5 shows a state when the heating unit 84 is at the first position. In the state shown in FIG. 4 (second position), when the second rod 195b is rotated clockwise, as shown in FIG. 5, the first rotating body 181 and the second rotating body 182 are in the first position where they are in contact with each other. Displace. At this time, the first bearing portion 193 (first rotating body 181) is biased toward the second bearing portion 194 (second rotating body 182) by the biasing member 198, and the second bearing portion 194 is the first bearing portion. It is energized to the 193 side. In addition, in the 1st position, the 1st rotary body 181 and the 2nd rotary body 182 should just pinch | interpose the 2nd web W2 and can heat-press, and do not need to mutually contact.
Further, when the second rod 195b is rotated counterclockwise in the state shown in FIG. 5 (first position), the first rotating body 181 and the second rotating body 182 are displaced to the second position where they are separated from each other.

  The displacement mechanism 190 shown in FIGS. 4 and 5 is driven by a roller moving unit 341 (FIG. 7) provided in the sheet manufacturing apparatus 100, and can be displaced to the first position in FIG. 4 and the second position in FIG. . The roller moving unit 341 includes, for example, a motor, an actuator, etc., operates according to the control of the control device 110, and functions as the driving unit described above. That is, in the present embodiment, the roller moving unit 341 rotates the second rod 195b around the rotation shaft 197b, and switches the heating unit 84 between the first position and the second position.

  The heating unit 84 of the present embodiment is configured such that the first rotating body 181 and the second rotating body 182 can be rotationally driven at the second position. The sheet manufacturing apparatus 100 according to the present embodiment includes a driving unit that rotationally drives the first rotating body 181 and the second position without transmitting the driving force of the driving unit to the second rotating body 182 at the first position. A transmission mechanism that transmits the driving force of the driving unit to the second rotating body 182. The drive unit is, for example, a heating unit drive motor 337 (FIG. 7). In addition, the transmission mechanism can use a link or a gear that transmits the driving force of the heating unit driving motor 337 to the first rotating body 181 or the second rotating body 182.

3. Configuration of Additive Supply Unit FIG. 6 is a schematic diagram illustrating the configuration of the additive supply unit 52.
The additive supply unit 52 includes an additive cartridge 501 as an additive storage unit that stores an additive containing a resin. The additive cartridge 501 is formed in a box shape having a hollow inside, and is mounted on the upper part of the discharge part 52 a of the additive supply part 52. With the additive cartridge 501 mounted, the discharge part 52a communicates with the internal space of the additive cartridge 501, and the additive inside the additive cartridge 501 flows down to the discharge part 52a.

  The discharge part 52a is connected to the pipe 54 via the supply pipe 52c, and the additive flows from the discharge part 52a to the pipe 54. A supply adjustment unit 52b is disposed between the discharge unit 52a and the supply pipe 52c. The supply adjustment unit 52b is a mechanism that adjusts the amount of the additive flowing into the supply pipe 52c from the discharge unit 52a. For example, the supply adjustment unit 52b has a shutter (not shown) that stops the inflow of the additive from the discharge unit 52a to the supply pipe 52c, and a screw feeder that sends the additive from the discharge unit 52a to the supply pipe 52c with the shutter open ( (Not shown) or the like. The supply adjustment unit 52b may include a mechanism for adjusting the opening of the shutter.

  A plurality of additive cartridges 501 can be attached to the additive supply unit 52, and a discharge unit 52a, a supply adjustment unit 52b, and a supply pipe 52c are provided corresponding to each additive cartridge 501. In the present embodiment, seven additive cartridges 501 can be attached to the additive supply unit 52. The kind of additive contained in each additive cartridge 501 is arbitrary. For example, by attaching an additive cartridge 501 that contains additives of different colors, yellow additive, magenta additive, and cyan additive can be supplied to the tube 54 from the additive supply unit 52, respectively. Further, an additive cartridge 501 containing a white additive, a colorless (plain) additive, or the like may be attached, or an additive cartridge 501 containing an additive of another color may be attached.

  The additive supply unit 52 can supply the additive from one or more additive cartridges 501 among the plurality of additive cartridges 501 mounted on the additive supply unit 52. For example, the control device 110 controls the additive supply unit 52 to supply the additive from the additive cartridge 501 containing the yellow additive and the additive cartridge 501 containing the cyan additive. A green sheet S can be manufactured.

4). Configuration of Control System FIG. 7 is a block diagram showing the configuration of the control system of the sheet manufacturing apparatus 100.
The control device 110 included in the sheet manufacturing apparatus 100 includes a main processor 111 that controls each unit of the sheet manufacturing apparatus 100. The control device 110 includes a ROM (Read Only Memory) 112 and a RAM (Random Access Memory) 113 connected to the main processor 111. The main processor 111 is an arithmetic processing unit such as a CPU (Central Processing Unit), and controls each part of the sheet manufacturing apparatus 100 by executing a basic control program stored in the ROM 112. The main processor 111 may be configured as a system chip including peripheral circuits such as the ROM 112 and the RAM 113 and other IP cores.

  The ROM 112 stores a program executed by the main processor 111 in a nonvolatile manner. The RAM 113 forms a work area used by the main processor 111 and temporarily stores programs executed by the main processor 111 and data to be processed.

  The nonvolatile storage unit 120 stores a program executed by the main processor 111 and data processed by the main processor 111.

  The display panel 116 is a display panel such as a liquid crystal display, and is installed, for example, in front of a housing (main body) (not shown) of the sheet manufacturing apparatus 100. The display panel 116 displays the operation state of the sheet manufacturing apparatus 100, various setting values, warning display, and the like according to the control of the main processor 111.

  The touch sensor 117 detects a touch (contact) operation or a press operation. The touch sensor 117 is composed of, for example, a pressure sensing type or capacitance type sensor having a transparent electrode, and is arranged on the display surface of the display panel 116. When the touch sensor 117 detects an operation, the touch sensor 117 outputs operation data including the operation position and the number of operation positions to the main processor 111. The main processor 111 detects an operation on the display panel 116 based on the output of the touch sensor 117 and acquires an operation position. The main processor 111 implements a GUI (Graphical User Interface) operation based on the operation position detected by the touch sensor 117 and the display data 122 being displayed on the display panel 116.

  The control device 110 is connected to a sensor installed in each part of the sheet manufacturing apparatus 100 via a sensor I / F (Interface) 114. The sensor I / F 114 is an interface that acquires a detection value output from the sensor and inputs the detection value to the main processor 111. The sensor I / F 114 may include an A / D (Analog / Digital) converter that converts an analog signal output from the sensor into digital data. The sensor I / F 114 may supply a drive current to each sensor. Further, the sensor I / F 114 may include a circuit that acquires the output value of each sensor according to the sampling frequency specified by the main processor 111 and outputs the acquired value to the main processor 111.

  The sensor I / F 114 includes a used paper remaining amount sensor 301, an additive remaining amount sensor 302, a paper discharge sensor 303, a water amount sensor 304, an air amount sensor 306, an air speed sensor 307, temperature sensors 308a and 308b, and a resistance detection unit 309a. 309b is connected.

  The used paper remaining amount sensor 301 is a sensor that detects the remaining amount of the raw material MA accumulated in each stacker 11 of the supply unit 10. The control device 110 can detect the presence or remaining amount of used paper stored in each stacker 11 based on the detection value of the used paper remaining amount sensor 301.

  The additive remaining amount sensor 302 is a sensor that detects the remaining amount of additive that can be supplied from the additive supply unit 52, and can detect the remaining amount of additive contained in each of the plurality of additive cartridges 501. It may be a configuration. The control device 110 can determine the remaining amount of the additive in each additive cartridge 501 based on the detection value of the additive remaining amount sensor 302, or determines whether the remaining amount of the additive is equal to or greater than a threshold value. can do.

  The paper discharge sensor 303 detects the amount of sheets S accumulated in the tray or stacker included in the discharge unit 96. For example, when the control device 110 determines that the amount of sheets S accumulated in the discharge unit 96 is equal to or greater than a set value based on the detection value of the discharge sensor 303, the control device 110 can perform notification.

  The water amount sensor 304 is a sensor that detects the amount of water in a water supply tank (not shown) built in the sheet manufacturing apparatus 100. The control device 110 performs notification when the amount of water detected by the water amount sensor 304 falls below a set value. The water amount sensor 304 may be configured to detect the remaining amount of a tank (not shown) of the vaporizing humidifier 343 and / or the mist humidifier 347.

  The air volume sensor 306 detects the air volume of the air flowing inside the sheet manufacturing apparatus 100. The wind speed sensor 307 detects the wind speed of the air flowing inside the sheet manufacturing apparatus 100. The control device 110 can determine the state of airflow (material conveying airflow) inside the sheet manufacturing apparatus 100 based on the detection values of the air volume sensor 306 and the wind speed sensor 307. Based on the determination result, the control device 110 can control the rotational speed of the defibrating unit blower 26, the mixing blower 56, and the like, and appropriately maintain the airflow state inside the sheet manufacturing apparatus 100.

  The temperature sensors 308a and 308b are sensors that detect the temperature of the heating roller 86, as shown in FIGS. The control device 110 detects the temperature of the heating roller 86, that is, the heating temperature at which the second web W2 is heated by the heating roller 86, based on the detection values of the temperature sensors 308a and 308b.

The resistance detector 309a is a detector that detects the electrical resistance of the heater 339a, and the resistance detector 309b is a detector that detects the electrical resistance of the heater 339b. The control device 110 can acquire the resistance value detected by the resistance detection units 309a and 309b.
The resistance detection unit 309a may be installed in a power supply circuit (not shown) that supplies power to the heater 339a. Alternatively, a part of the power supply circuit may be connected to the control device 110, and the control device 110 may calculate the resistance value of the heater 339a based on a potential difference at a predetermined location in the power supply circuit. In this case, a part of the power supply circuit functions as the resistance detection unit 309a. The same applies to the resistance detection unit 309b.

  The control device 110 is connected to each drive unit included in the sheet manufacturing apparatus 100 via the drive unit I / F 115. The drive unit I / F 115 is connected to a motor, a pump, a heater, and the like included in the sheet manufacturing apparatus 100. These are collectively referred to as a drive unit, and in particular, a component that causes physical displacement such as a motor may be referred to as a drive unit, and other heaters may be referred to as operation units. In the following description, the drive unit includes a drive unit and an operation unit that are connected to the drive unit I / F 115 and perform functions under the control of the control device 110.

  The drive unit I / F 115 may be connected to each of the drive units described above via a drive IC (Integrated Circuit). The drive IC is, for example, a circuit that supplies a drive current to the drive unit under the control of the main processor 111, and includes a power semiconductor element or the like. For example, the drive IC can be an inverter circuit or a drive circuit that drives a stepping motor, and the specific configuration and specifications may be appropriately selected according to the drive unit to be connected.

The crushing part drive motor 311 is connected to the drive part I / F 115 and rotates a cutting blade (not shown) for cutting the raw material MA in accordance with the control of the control device 110.
The defibrating unit driving motor 313 is connected to the driving unit I / F 115 and rotates a rotor (not shown) included in the defibrating unit 20 according to control of the control device 110.

  The paper feed motor 315 is a motor that drives a roller (not shown) included in the supply unit 10 and conveys the raw material MA toward the crushing unit 12 under the control of the control device 110.

  The additive supply motor 317 is connected to the drive unit I / F 115 and drives a screw feeder (not shown) that feeds the additive in the supply adjustment unit 52b in accordance with the control of the control device 110. The additive supply motor 317 may open and close the shutter of the supply adjustment unit 52b.

  A defibrating unit blower 26 is connected to the driving unit I / F 115. Similarly, a mixing blower 56, a suction blower 77, an intermediate blower 318, and a collection blower 28 are connected to the drive unit I / F 115 to the drive unit I / F 115. With this configuration, the controller 110 can control the start and stop of the defibrating unit blower 26, the mixing blower 56, the suction blower 77, the intermediate blower 318, and the collection blower 28. The intermediate blower 318 is a blower that performs suction from the suction mechanism 79 c of the transport unit 79. The control device 110 may be configured to be able to control the start / stop of suction by each of these blowers, and to be able to control the rotation speed of each blower.

  The driving unit I / F 115 includes a drum driving motor 325, a belt driving motor 327, a dividing unit driving motor 329, a drum driving motor 331, a belt driving motor 333, a pressurizing unit driving motor 335, and a heating unit driving motor 337. Is connected.

The drum drive motor 325 is a motor that rotates the drum unit 41. The belt drive motor 327 is a motor that operates the mesh belt 46 of the first web forming unit 45. The dividing portion drive motor 329 is a motor that rotates the rotating body 49. The drum drive motor 331 is a motor that rotates the drum unit 61. The belt drive motor 333 is a motor that drives the mesh belt 72. The pressurizing unit driving motor 335 is a motor that drives the calendar roller 85 of the pressurizing unit 82. The heating unit driving motor 337 is a motor that drives the heating roller 86 of the heating unit 84.
The control device 110 controls ON / OFF of each of these motors. Further, the control device 110 may be configured to be able to control the rotation speed of each motor.

  The heaters 339a and 339b are heaters for heating the heating roller 86 as shown in FIGS. The heaters 339a and 339b are respectively connected to the drive unit I / F 115, and the control device 110 individually controls ON / OFF of the heaters 339a and 339b. Further, the heaters 339a and 339b may be configured to switch outputs, and the control device 110 may be configured to control the outputs of the heaters 339a and 339b.

  The roller moving unit 341 operates the displacement mechanism 190 (FIGS. 4 and 5) included in the heating unit 84 to displace the first position in FIG. 4 and the second position in FIG. 5. The roller moving unit 341 is connected to the control device 110 via the drive unit I / F 115, and the control device 110 controls the roller moving unit 341 to switch between the first position and the second position of the heating unit 84.

  The vaporizing humidifier 343 is a device that includes a tank (not shown) that stores water and a filter (not shown) that is infiltrated into the water in the tank, and blows and humidifies the filter. The vaporizing humidifier 343 has a fan (not shown) connected to the drive unit I / F 115 and turns on / off the air to the filter according to the control of the control device 110. In the present embodiment, humidified air is supplied from the vaporizing humidifier 343 to the humidifying units 202, 204, 206, and 208. Accordingly, the humidifying units 202, 204, 206, and 208 supply humidified air supplied from the vaporizing humidifier 343 to the crushing unit 12, the sorting unit 40, the pipe 54, and the deposition unit 60. Note that the vaporizing humidifier 343 may include a plurality of vaporizing humidifiers. In this case, the installation location of each vaporizing humidifier may be any of the crushing unit 12, the sorting unit 40, the pipe 54, and the deposition unit 60.

  Further, the vaporizing humidifier 343 includes a humidifying heater 345 for heating the air blown to the filter by the fan. The humidifying heater 345 is connected to the driving unit I / F 115 separately from a fan (not shown) provided in the vaporizing humidifier 343. The control device 110 controls ON / OFF of the fan included in the vaporizing humidifier 343 and controls ON / OFF of the humidifying heater 345 independently of the control of the vaporizing humidifier 343. The vaporizing humidifier 343 corresponds to the humidifier of the present invention, and the humidifying heater 345 corresponds to a heat source.

  The mist type humidifier 347 includes a tank (not shown) that stores water, and a vibration unit (not shown) that applies vibration to the water in the tank to generate mist-like water droplets (mist). The mist type humidifier 347 is connected to the drive unit I / F 115 and turns the vibration unit ON / OFF according to the control of the control unit 150. In the present embodiment, air containing mist is supplied from the mist type humidifier 347 to the humidifying units 210 and 212. Accordingly, the humidifying units 210 and 212 supply air including the mist supplied from the mist type humidifier 347 to each of the first web W1 and the second web W2.

  The water supply pump 349 is a pump that sucks water from the outside of the sheet manufacturing apparatus 100 and takes the water into a tank (not shown) provided inside the sheet manufacturing apparatus 100. For example, when starting the sheet manufacturing apparatus 100, an operator who operates the sheet manufacturing apparatus 100 puts water in a water supply tank and sets it. The sheet manufacturing apparatus 100 operates the water supply pump 349 to take water from the water supply tank into the tank inside the sheet manufacturing apparatus 100. Further, the water supply pump 349 may supply water from the tank of the sheet manufacturing apparatus 100 to the vaporizing humidifier 343 and the mist humidifier 347.

  The cutting unit drive motor 351 is a motor that drives the first cutting unit 92 and the second cutting unit 94 of the cutting unit 90. The cutting unit drive motor 351 is connected to the drive unit I / F 115.

  An IC reading unit 119 is connected to the control device 110. The IC reading unit 119 reads and writes data with respect to the IC 521 provided in each of the additive cartridges 501 (FIG. 6) attached to the additive supply unit 52.

  An IC 521 is attached to each of the additive cartridges 501. The IC 521 is an IC chip having a storage area for storing data, and stores data relating to the additive contained in the additive cartridge 501. The IC 521 may be a contact type IC chip or a non-contact type IC chip (for example, RFID (Radio Frequency IDentifier)).

  The data stored in the IC 521 includes data relating to the additive contained in the additive cartridge 501. For example, the color and property of the additive contained in the additive cartridge 501, a suitable heating temperature, and the like may be included, and codes corresponding to these data may be included. Specifically, the IC 521 stores the type of additive contained in the additive cartridge 501, for example, type data indicating the color of the additive. For example, the IC 521 stores temperature data indicating the heating temperature suitable for the additive contained in the additive cartridge 501. Further, the IC 521 stores, for example, remaining amount data indicating the remaining amount of the additive in the additive cartridge 501. The IC 521 may store identification information unique to each IC 521.

  The IC reading unit 119 is a device that reads data stored in the IC 521 and writes data to the IC 521 (including erasing), and is, for example, a contact-type or non-contact IC reader / writer. For example, a plurality of IC reading units 119 may be installed corresponding to the number of additive cartridges 501 that can be mounted in the additive supply unit 52. The IC reading unit 119 reads data from each of the plurality of ICs 521 mounted on each additive cartridge 501 under the control of the control device 110, and outputs the read data to the control device 110.

  FIG. 8 is a functional block diagram of the sheet manufacturing apparatus 100 and shows functional configurations of the storage unit 140 and the control unit 150. The storage unit 140 is a logical storage unit configured by the nonvolatile storage unit 120 (FIG. 7).

  The control unit 150 and various functional units included in the control unit 150 are formed by the cooperation of software and hardware when the main processor 111 executes a program. Examples of the hardware configuring these functional units include the main processor 111 and the nonvolatile storage unit 120.

  The storage unit 140 stores setting data 121, display data 122, and determination reference data 126.

  The setting data 121 includes data for setting the operation of the sheet manufacturing apparatus 100. For example, the setting data 121 includes data such as characteristics of various sensors included in the sheet manufacturing apparatus 100 and threshold values used in processing in which the main processor 111 detects an abnormality based on detection values of the various sensors.

  The display data 122 is screen data that the main processor 111 displays on the display panel 116. The display data 122 may be fixed image data, or data for setting a screen display for displaying data generated or acquired by the main processor 111.

  The determination reference data 126 includes data used as a determination reference in the process in which the main processor 111 determines abnormality of the heaters 339a and 339b. The determination reference data 126 includes, for example, a reference value related to the temperature when abnormality of the heaters 339a and 339b is determined based on the temperatures detected by the temperature sensors 308a and 308b. Further, the determination reference data 126 includes, for example, a reference value related to a resistance value when abnormality of the heaters 339a and 339b is determined based on the resistance value detected by the resistance detection units 309a and 309b.

  The storage unit 140 may store data read from the IC 521 by the IC reading unit 119. In this case, the storage unit 140 stores data read from the IC 521 mounted on each additive cartridge 501 set in the additive supply unit 52. For example, the control unit 150 determines the heating temperature of the heating unit 84 based on the temperature data read from the IC 521. Thereby, in the heating part 84, the 2nd web W2 can be heated at the appropriate temperature corresponding to an additive, the additive contained in the 2nd web W2 can fully be melted, and the high quality sheet | seat S can be obtained. Can be manufactured. Although the specific value of the heating temperature corresponding to the additive varies depending on the nature of the additive, since the additive hardly melts at a temperature close to room temperature, it is higher than the so-called room temperature. For example, it is not uncommon for the temperature to exceed 100 degrees Celsius.

  The control unit 150 has functions of an operating system (OS) 151, a display control unit 152, an operation detection unit 153, a detection control unit 154, a data acquisition unit 155, a drive control unit 156, and a heating control unit 157.

  The function of the operating system 151 is a function of a control program stored in the storage unit 140, and each unit of the other control unit 150 is a function of an application program executed on the operating system 151.

The display control unit 152 displays an image on the display panel 116 based on the display data 122.
When the operation on the touch sensor 117 is detected, the operation detection unit 153 determines the content of the GUI operation corresponding to the detected operation position.

  The detection control unit 154 acquires detection values of various sensors connected to the sensor I / F 114. In addition, the detection control unit 154 determines the detection value of the sensor connected to the sensor I / F 114 by comparing it with a preset threshold value (setting value). When the determination result corresponds to a condition for performing notification, the detection control unit 154 outputs the notification content to the display control unit 152 and causes the display control unit 152 to perform notification using an image or text.

  The data acquisition unit 155 reads data from the IC 521 by the IC reading unit 119.

  The drive control unit 156 controls start (start) and stop of each drive unit connected via the drive unit I / F 115. Further, the drive control unit 156 may be configured to control the rotational speed of the defibrating unit blower 26, the mixing blower 56, and the like.

  The heating control unit 157 controls the temperature at which the second web W <b> 2 is heated by the heating roller 86 of the heating unit 84. The heating control unit 157 sets the heating temperature by the heating unit 84. Here, the temperature set by the heating control unit 157 can be referred to as a target temperature that is a control target. The heating control unit 157 acquires the detection values of the temperature sensors 308a and 308b, and controls the heaters 339a and 339b so that the heating temperature of the heating unit 84 becomes the set target temperature.

  The accuracy of the temperature control performed by the heating control unit 157 may be as long as the quality of the sheet S can be satisfied. Specifically, the heating control unit 157 switches the heaters 339a and 339b on / off and / or controls the output of the heaters 339a and 339b, and controls the temperature of the heating roller 86 to include a predetermined target temperature. Maintain within temperature range. The size of the predetermined temperature range and the difference from the target temperature are set as appropriate. For example, the setting method and conditions for the predetermined temperature range with respect to the target temperature may be included in the setting data 121 and stored in the storage unit 140, and the heating control unit 157 may perform control according to this setting. Further, the heating control unit 157 may control ON / OFF of the humidifying heater 345.

  The heating control unit 157 determines whether the heaters 339a and 339b are abnormal. This abnormality determination process will be described later.

5. Next, the operation of the sheet manufacturing apparatus 100 will be described.

  FIG. 9 is a flowchart showing the operation of the sheet manufacturing apparatus 100. 11, 13, and 14 are flowcharts showing the operation of the sheet manufacturing apparatus 100, and particularly show the processing of FIG. 9 in detail.

  When the sheet manufacturing apparatus 100 is powered on (step ST11), the display control unit 152 displays the operation screen 160 on the display panel 116 (step ST12). The operation screen 160 is a screen for a user (operator) who operates the sheet manufacturing apparatus 100 to perform an operation.

FIG. 10 is a diagram illustrating an example of a screen displayed by the display panel 116, and shows an operation screen 160.
The operation screen 160 is displayed on the display panel 116 after the sheet manufacturing apparatus 100 is turned on, and the sheet manufacturing apparatus 100 starts manufacturing the sheet S while the sheet manufacturing apparatus 100 manufactures the sheet S. It may be displayed continuously during

  On the operation screen 160, an operation instruction unit 161, a cartridge information display unit 162, a sheet setting unit 163, and a notification unit 164 are arranged. The operation instruction unit 161, the cartridge information display unit 162, and the sheet setting unit 163 constitute a GUI for the user to operate. By displaying the operation screen 160 on the display panel 116, the touch sensor 117 constitutes a reception unit together with the operation detection unit 153 (FIG. 8).

  The operation instruction unit 161 includes a start instruction button 161a, a stop instruction button 161b, an interruption instruction button 161c, and a standby instruction button 161d that function as buttons (operation units) for instructing the operation of the sheet manufacturing apparatus 100.

  The sheet setting unit 163 includes a color setting unit 163a, a thickness setting unit 163b, and a raw material setting unit 163c that function as buttons (operation units) for instructing the conditions of the sheet S manufactured by the sheet manufacturing apparatus 100.

  Each operation unit arranged in the operation instruction unit 161 and the sheet setting unit 163 may be installed in the casing of the sheet manufacturing apparatus 100 as a physical button. In the present embodiment, as an example, an example will be described in which each operation unit is provided as a GUI (icon) using the display panel 116 and the touch sensor 117.

  The color setting unit 163a is an operation unit for designating the color of the sheet S. In the example of FIG. 10, when the user operates the color setting unit 163a, the color of the sheet S can be selected from a plurality of preset colors by a pull-down menu. The control unit 150 acquires the color selected by the operation of the color setting unit 163a by the operation detection unit 153. The drive control unit 156 uses the type of additive to be used and a plurality of types of additives among the additives in the additive cartridge 501 mounted on the additive supply unit 52 corresponding to the selected color. The proportion of each additive is determined. The drive control unit 156 determines the amount of additive to be supplied from each additive cartridge 501 based on the type of additive to be used and the ratio of each additive when a plurality of types of additives are used. The additive supply motor 317 is controlled based on the determined amount.

  The thickness setting unit 163b is an operation unit for designating the thickness of the sheet S. In the example of FIG. 10, when the user operates the thickness setting unit 163b, the thickness of the sheet S can be selected from a plurality of preset thicknesses using a pull-down menu. The control unit 150 obtains the thickness selected by the operation of the thickness setting unit 163b by the operation detection unit 153. The drive control unit 156 corresponds to the selected thickness, the thickness of the second web W2 deposited on the mesh belt 72 in the deposition unit 60, and / or the load applied to the second web W2 by the pressure unit 82. Etc. are determined. The drive control unit 156 controls the rotation speed of the drum drive motor 331, the rotation speed of the belt drive motor 333, the operation condition of the pressure unit drive motor 335, and the like according to the determined conditions.

  The raw material setting unit 163c is an operation unit for designating the raw material MA used for manufacturing the sheet S. For example, when the user operates the raw material setting unit 163c, the type of the raw material MA of the sheet S can be selected from a plurality of preset types by a pull-down menu. The raw material MA that can be selected by the raw material setting unit 163c is the raw material MA that the supply unit 10 stores in the stacker 11. That is, the selection in the raw material setting unit 163c corresponds to the selection of the stacker 11 that sends out the raw material MA in the supply unit 10. The control unit 150 uses the operation detection unit 153 to acquire the type of the raw material MA selected by the operation of the raw material setting unit 163c. The drive control unit 156 selects the stacker 11 that stores the selected type of raw material MA, and controls the paper feed motor 315 so that the raw material MA is supplied from the selected stacker 11.

  In addition to the above-described buttons, the sheet setting unit 163 may include a button for specifying the number of sheets S to be manufactured and a button for specifying the size (size) of the sheet S. A button for designating a condition related to S may be arranged.

  The start instruction button 161a is a button for instructing the start of manufacturing the sheet S. For example, the start instruction button 161 a is operated after a condition related to the sheet S is designated by an operation of the sheet setting unit 163, and instructs the start of manufacture of the sheet S based on the designated condition. In the sheet setting unit 163, a default specified value is provided in advance, and when the start instruction button 161a is operated in a state where the sheet setting unit 163 is not operated, the sheet manufacturing apparatus 100 sets the default specified value. Based on this, the production of the sheet S may be started.

  The stop instruction button 161b is a button for instructing to stop the operation of the sheet manufacturing apparatus 100. The casing of the sheet manufacturing apparatus 100 may be provided with a power switch (not shown) for turning on / off the power of the sheet manufacturing apparatus 100 separately from the display panel 116. In this case, the stop instruction button 161b functions as a button for instructing to stop the sheet manufacturing apparatus 100. However, the stop instruction button 161b may be configured to instruct power-off of the sheet manufacturing apparatus 100 using the stop instruction button 161b. When the sheet manufacturing apparatus 100 stops manufacturing the sheet S by operating the stop instruction button 161b, the condition relating to the sheet S set by the sheet setting unit 163 is cleared, and the default designated value (initial value) is restored.

  The interruption instruction button 161c temporarily stops the production of the sheet S while the sheet production apparatus 100 is producing the sheet S. When the interruption instruction button 161c is operated and the sheet manufacturing apparatus 100 stops manufacturing the sheet S, the condition relating to the sheet S set by the sheet setting unit 163 is held. In this state, when the start instruction button 161a is operated, the control unit 150 starts (restarts) production of the sheet S according to the same conditions as before the interruption instruction button 161c is operated by the sheet manufacturing apparatus 100.

  The standby instruction button 161d is a button for instructing the shift to the standby state in which the sheet manufacturing apparatus 100 does not manufacture the sheet S.

  A series of operations for manufacturing the sheet S by the sheet manufacturing apparatus 100 is referred to as a “job”. The job refers to an operation of manufacturing the sheet S having a condition designated by an operation of the sheet setting unit 163 or a default value. Specifically, from the start of the operation in response to the operation of the start instruction button 161a until the completion of the production of the number of sheets S designated by the operation of the sheet setting unit 163, or the operation of the stop instruction button 161b The operation up to stopping by is called a job. When the number of sheets S to be manufactured is designated, the end of the job is clearly specified. When the stop instruction button 161b is operated without specifying the number of sheets S, or when the stop instruction button 161b is operated before the manufacture of the specified number of sheets S is completed, there is no setting in advance. The job ends. When the interruption instruction button 161c is operated, the sheet manufacturing apparatus 100 interrupts the job but does not end it. For this reason, when the start instruction button 161a is operated after the manufacture of the sheet S is stopped in accordance with the operation of the interruption instruction button 161c, the sheet manufacturing apparatus 100 resumes the manufacture of the sheet S, specifically, the interruption. The sheet S is manufactured under the same conditions as before the operation of the instruction button 161c. That is, the interruption instruction button 161c temporarily stops the job, but the job continues if the start instruction button 161a is operated thereafter.

  The cartridge information display unit 162 is a display unit that displays information regarding the additive cartridge 501 mounted (set) in the additive supply unit 52. The cartridge information display unit 162 displays an image simulating the additive cartridge 501 corresponding to the number of additive cartridges 501 that can be attached to the additive supply unit 52. In the cartridge information display unit 162, information indicating the color of the additive and the remaining amount of the additive contained in the additive cartridge 501 is displayed as text or an image corresponding to each image of the additive cartridge 501. . When the number of additive cartridges 501 attached to the additive supply unit 52 is smaller than the number that can be attached, an image corresponding to the additive cartridge 501 that is not attached is displayed as a blank.

  The notification unit 164 is a display area where the content notified to the user is displayed as text or an image. The notification unit 164 notifies the user about the operating state of the sheet manufacturing apparatus 100, and for example, a message or the like for notifying that an abnormality has occurred in the temperature or operation of the heating unit 84 is displayed on the notification unit 164.

  Returning to FIG. 9, the operation detection unit 153 detects an operation on the operation screen 160 by the user, performs a process of receiving an input by this operation, and acquires the operation content (step ST13).

  The control unit 150 sets the operating condition of the sheet manufacturing apparatus 100 based on the operation content acquired by the operation detection unit 153 in step ST14 by the functions of the drive control unit 156 and the heating control unit 157 (step ST14). The operation content acquired in step ST13 is, for example, content input by operating the operation screen 160. The operation condition set in step ST14 is not limited to the condition directly specified by the operation content acquired in step ST13, but may include a condition determined corresponding to the operation content acquired in step ST13. Specifically, the operating conditions include the type of raw material MA, the type and amount of additive used, the heating temperature in the heating unit 84, the conveyance speed of the mesh belt 72, and the like. The type of raw material MA is determined according to the operation of the raw material setting unit 163c. Further, the type and amount of the additive to be used are determined by the control unit 150 so as to correspond to the contents specified by the color setting unit 163a and / or the thickness setting unit 163b. The conveyance speed of the mesh belt 72 is determined by the control unit 150 so as to correspond to the content specified by the thickness setting unit 163b. The heating temperature of the heating unit 84 is determined by the control unit 150 so as to correspond to the type and / or amount of the additive. The control unit 150 may refer to the data read from the IC 521 when determining the operation condition. The control unit 150 sets the determined operation condition as a set value for manufacturing the sheet S.

  Control unit 150 starts an activation sequence (step ST15). In the activation sequence, the control unit 150 executes processing for initializing various sensors connected to the sensor I / F 114 and starting detection. The operation in step ST15 includes initialization of the operation of each driving unit connected to the driving unit I / F 115 and control for shifting each driving unit to a state where the manufacture of the sheet S can be started. However, the conveyance of the raw material MA, the material, and the sheet S is not started.

  The control unit 150 drives the roller moving unit 341 to shift the heating unit 84 to a state where the pair of heating rollers 86 do not nip, and starts the idling of the heating roller 86 (step ST16). Specifically, the control unit 150 moves the heating unit 84 to the second position illustrated in FIG. In the second position, the first rotating body 181 and the second rotating body 182 are separated from each other. As described above, in the heating unit 84 of the present embodiment, the first rotating body 181 and the second rotating body 182 can be driven to rotate at the second position. The control unit 150 drives the heating unit driving motor 337 to rotate the first rotating body 181 and the second rotating body 182 while being separated from each other, that is, in a state where the nip is released. The rotation of the first rotator 181 and the second rotator 182 is referred to as idle driving. When the heating unit 84 is already in the second position in step ST16, the control unit 150 holds the second position.

Control unit 150 switches heaters 339a and 339b to ON, and starts heating of heating unit 84 (step ST17). Here, the heating unit 84 is in the second position in step ST16, and idling driving is started. In the second position, the contact between the first rotating body 181 and the second rotating body 182 and the second web W2 is released. For this reason, the second web W2 is not heated for a long time during the temperature rise. For example, the excessively heated second web W2 adheres to the surfaces of the first rotating body 181 and the second rotating body 182. Etc. can be prevented. Further, since each of the first rotator 181 and the second rotator 182 is heated to raise the temperature at the second position and is driven idle, the temperature of the first rotator 181 and the second rotator 182 is made uniform. Can be expected. That is, temperature unevenness in the circumferential direction of the first rotating body 181 and the second rotating body 182 can be suppressed. In particular, the second rotating body 182 is heated from the outside by a heater 339a included in the heating body 183. In this configuration, by performing idling driving, the temperature of the second rotating body 182 can be raised while suppressing temperature unevenness.
In step ST <b> 17, the control unit 150 turns on the humidifying heater 345 and starts increasing the temperature.

  Control unit 150 functions as a determination unit, and performs an abnormality determination to determine whether or not an abnormality has occurred in heating unit 84 after the start of temperature increase (step ST18).

  The abnormality determination process executed by the sheet manufacturing apparatus 100 includes three processes. These processes will be sequentially described as a first process, a second process, and a third process.

[1] First Process FIG. 11 is a flowchart showing the operation of the sheet manufacturing apparatus 100, and shows the first process executed in step ST18.
Control unit 150 counts the elapsed time from the start of heating of heating unit 84, and detects the temperature at the time when a preset time has elapsed by using temperature sensors 308a and 308b (step ST31). The set time of step ST31 is included in the criterion data 126 and stored in advance, for example.

  Based on the temperature detected in step ST31, control unit 150 calculates a temperature gradient indicating a temperature change during the set time (step ST32). Control unit 150 determines whether or not the calculated temperature gradient is within the range set in determination criterion data 126 (step ST33). When the temperature gradient is within the set range (step ST33; Yes), control unit 150 determines that heating unit 84 is normal (step ST34). If the temperature gradient is not within the set range (step ST33; No), control unit 150 determines that heating unit 84 is not normal (there is an abnormality) (step ST35).

FIG. 12 is a chart showing an example of the temperature gradient of the heating unit 84.
In FIG. 12, the horizontal axis indicates the passage of time, and the vertical axis indicates the temperature of the heating unit 84. Specifically, the temperature of the heating unit 84 is a temperature detected by the temperature sensors 308a and 308b. A solid line G <b> 1 in the figure indicates a temperature change of the heating unit 84. In addition, G2 and G3 indicated by phantom lines in the figure respectively indicate an upper limit and a lower limit of the temperature gradient when the heating unit 84 is normal.

  The control unit 150 acquires the detected temperature T1 of the temperature sensors 308a and 308b at the time (time t1) when the set time has elapsed from the temperature increase start (time t0) of the heating unit 84. The control unit 150 calculates the temperature gradient by dividing the difference between the temperature T1 detected by the temperature sensors 308a and 308b at the start of temperature increase and the temperature T1 by the elapsed time TE1. The temperature gradient indicates a temperature rise per unit time, and corresponds to the gradient θ of the temperature change G1 of the heating unit 84 in FIG.

  The value of the time t1 may be set as appropriate, but for example, the temperature T1 at the time t1 is preferably lower than the target temperature set as the heating temperature of the heating unit 84. For example, as described above, the heating temperature of the additive often exceeds 100 degrees Celsius. Correspondingly, the temperature T1 is preferably 80 degrees Celsius or less, and more preferably 50 degrees Celsius or less. . That is, the time t1 is a time at which the detected temperature of the temperature sensors 308a and 308b is higher than room temperature (ambient temperature of the sheet manufacturing apparatus 100) and lower than the set value of the heating temperature of the heating unit 84. Is set.

  As the temperature T0, a preset value may be used, or the control unit 150 may obtain the temperature T0 from the temperature detected by the temperature sensors 308a and 308b before starting the temperature increase or at the start time.

  Control unit 150 compares temperature change G1 with each of temperature changes G2 and G3. The temperature change G2 corresponds to the upper limit gradient when there is no abnormality in the heating unit 84, and the temperature change G3 corresponds to the lower limit temperature gradient. Therefore, when the temperature change G1 is within the range RA1 between the temperature change G2 and the temperature change G3, it can be determined that the heating unit 84 is normal.

  FIG. 12 shows an example in which one temperature gradient is calculated from the detection values of the temperature sensors 308a and 308b. In this case, the control unit 150 performs a statistical operation such as calculating an average value on the detection values of the temperature sensors 308a and 308b to obtain one temperature gradient.

  The control unit 150 can acquire the detected temperatures of the temperature sensor 308a and the temperature sensor 308b. The controller 150 may obtain a temperature gradient for each of the detected temperature of the temperature sensor 308a and the detected temperature of the temperature sensor 308b. In this case, the temperature gradient of the first rotating body 181 and the temperature gradient of the second rotating body 182 are calculated. In this case, the determination reference data 126 may individually include abnormality determination data corresponding to the heater 339a and abnormality determination data corresponding to the heater 339b. The control unit 150 calculates the temperature gradient of the first rotating body 181, and based on whether or not this temperature gradient is within the temperature gradient range when there is no abnormality in the temperature increase of the first rotating body 181. The presence / absence of abnormality of the one-rotating body 181 is determined. Similarly, the control unit 150 calculates the temperature gradient of the second rotating body 182 and determines whether the temperature gradient is within the range of the temperature gradient when the second rotating body 182 is normal. The presence / absence of abnormality of the two-rotor 182 is determined.

As described above, in the first process, the controller 150 can appropriately and easily determine the abnormality of the heating unit 84 based on the temperature gradient from the start of temperature increase until the set time elapses.
As a specific example of the abnormality of the heating unit 84, when the temperature gradient is lower than the range RA1 (when the gradient θ is small), the disconnection of the heaters 339a and 339b, the contact failure of the temperature sensors 308a and 308b, or the contact portion Of foreign matter. Further, when the temperature gradient is higher than the range RA1 (when the temperature gradient θ is large), a failure of the temperature sensors 308a and 308b may be mentioned. In any case, since the function of adjusting the heating temperature of the heating unit 84 is hindered, it is determined as abnormal.

  In the first process, whether or not the temperature change G1 is within the range RA1 is not limited to the method of comparing the temperature gradient θ, and may be performed by comparing the temperatures, for example. For example, the upper limit value of the temperature at time t1 is obtained from the temperature change G2, and the lower limit value of the temperature is obtained from the temperature change G3. The control unit 150 compares the detected temperature at time t1 with each of the upper limit value corresponding to the temperature change G2 and the lower limit value corresponding to the temperature change G3, thereby determining whether or not the temperature gradient is within the range RA1. Can be determined promptly.

[2] Second Process FIG. 13 is a flowchart showing the operation of the sheet manufacturing apparatus 100, and shows the second process executed in step ST18.
The controller 150 acquires the detected temperatures of the temperature sensors 308a and 308b at predetermined time intervals after starting the temperature increase of the heating unit 84 (step ST41). The control unit 150 monitors the elapsed time from the start of temperature rise (step ST42), and repeatedly executes the temperature detection in step ST41 at a constant time period while the preset time has not elapsed (step ST42; No). .

  When the set time has elapsed from the start of temperature increase (step ST42; Yes), control unit 150 calculates a temperature gradient based on the temperature detected in step ST41 (step ST43). As described above, the temperature gradient calculated in step ST43 may be one temperature gradient that takes into account the detected temperatures of both the temperature sensors 308a and 308b. Alternatively, a temperature gradient based on the temperature detected by the temperature sensor 308a and a temperature gradient based on the temperature detected by the temperature sensor 308b may be included.

  The control unit 150 determines whether or not the temperature gradient calculated in step ST43 is within the range set in the determination reference data 126 (step ST44). When the temperature gradient is within the set range (step ST44; Yes), control unit 150 determines that heating unit 84 is normal (step ST45). If the temperature gradient is not within the set range (step ST44; No), control unit 150 determines that heating unit 84 is not normal (there is an abnormality) (step ST46).

  The cycle for detecting the temperature in step ST41 is set to a time shorter than the period from the start of temperature increase until the set time elapses (corresponding to the period TE1 between times t0 and t1 in FIG. 12). Specifically, it is desirable to perform temperature detection a plurality of times during a period until the set time elapses, and it is preferable that the cycle be capable of performing temperature detection 10 times or more.

  In the second process, since the temperature gradient is calculated from the result of performing the temperature detection a plurality of times, there is an advantage that an accurate temperature gradient can be calculated even if it is affected by noise during temperature detection. Examples of the noise source include switching noise when the heaters 339a and 339b are switched ON when the heaters 339a and 339b are constituted by halogen lamps or the like. Further, when the first rotating body 181 and the second rotating body 182 are charged by friction, there is a possibility of generating discharge noise. Further, electromagnetic noise in the case where the roller moving unit 341 includes a solenoid or a stepping motor can be cited as a noise source. Even under the influence of these noises, it is possible to accurately detect the temperature and accurately determine whether there is an abnormality.

[3] Third Process FIG. 14 is a flowchart showing the operation of the sheet manufacturing apparatus 100, and shows the third process executed in step ST18.

  In the third process, the control unit 150 acquires the detection values of the resistance detection units 309a and 309b after starting the temperature increase of the heating unit 84 (step ST51). Control unit 150 determines whether or not the acquired detection value is within a preset range (step ST52). When the detected value is a value that deviates from the setting range (step ST52; No), the control unit 150 determines that there is an abnormality (step ST53). When the detected value is a value that deviates from the setting range (step ST52; No), the control unit 150 determines whether or not a preset time has elapsed since the start of temperature increase (step ST54). While the set time has not elapsed (step ST54; No), the process returns to step ST51 to continue the process of acquiring the detection value. In this case, the operations of steps ST51 to ST52 may be executed at a preset cycle.

When the set time has elapsed from the start of temperature increase (step ST54; Yes), the control unit 150 determines that the heating unit 84 is normal (step ST55).
That is, the control unit 150 determines that the heating unit 84 is normal when the electrical resistances of the heaters 339a and 339b are within the set range until the set time elapses from the start of temperature increase.

  Since the detection values of the resistance detectors 309a and 309b are the electrical resistance values of the heaters 339a and 339b, it is determined in the third process whether or not the heaters 339a and 339b are normal. When the detected value, that is, the electric resistance value is larger than the set range, disconnection or poor contact of the heaters 339a and 339b is suspected. When the detected value, that is, the electric resistance value is smaller than the set range, a defective insulation or short circuit of the circuit including the heaters 339a and 339b is suspected. These abnormalities can be easily detected by performing the third process.

  Temporarily, when the malfunction of the heating unit 84 occurs in the sheet manufacturing apparatus 100 and it takes time to find the malfunction, for example, fibers and additives that have been defibrated from the raw material MA are contained in the sheet manufacturing apparatus 100. The mixed mixture stays. In such a state, it is necessary not only to eliminate the problem of the heating unit 84, but also to clean the path through which the raw material MA and the material are conveyed, remove the material unsuitable for manufacturing the sheet S, and discard it. This work requires a lot of labor, and the sheet manufacturing apparatus 100 is stopped during the work, resulting in downtime. Further, the material to be removed does not contribute to the manufacture of the sheet S, and is lost. In order to minimize such material, labor, and time loss, it is effective to quickly detect a failure of the heating unit 84. In particular, if a defect can be detected before the production of the sheet S is started, the time and labor required to remove unnecessary materials can be greatly reduced, and less material is discarded. Furthermore, if a failure can be detected before the temperature of the heating unit 84 reaches a high temperature close to the heating temperature, an event that impedes cleaning, such as material adhering to the surfaces of the first rotating body 181 and the second rotating body 182 and melting. Before this occurs, the sheet manufacturing apparatus 100 can be stopped. Therefore, before starting the manufacture of the sheet S, it is effective to increase the manufacturing efficiency of the sheet S that the presence or absence of abnormality of the heating unit 84 can be determined in the process of raising the temperature of the heating unit 84.

  In step ST52, the detection value of the resistance detection unit 309a and the detection value of the resistance detection unit 309b may be determined by comparing each with a set range. In this case, the determination reference data 126 may separately include an abnormality determination value or range for the resistance detection unit 309a and an abnormality determination value or range for the resistance detection unit 309b.

  In step ST18 (FIG. 9), the control unit 150 executes any one of the first to third processes or a combination of a plurality of processes. The control unit 150 may be configured to be able to select a process to be executed from the first to third processes. In this case, the control unit 150 selects a process to be executed in accordance with an operation on the operation screen 160 or a preset setting, and executes the selected process in step ST15. In addition, the control unit 150 may be configured to be able to execute only one or two of the first to third processes.

Control unit 150 determines whether the result of the process in step ST18 is abnormal or normal (step ST19). When it determines with the heating part 84 being normal (it is not abnormal) (step ST19; Yes), the process which estimates the temperature rising completion time of the heating part 84 is performed (step ST20). The temperature increase completion time is a timing at which the temperature of the heating unit 84 reaches the heating temperature set in step ST14.
As described in the first to third processes, the abnormality determination process in step ST18 is performed within a set time from the start of the temperature increase of the heating unit 84. Based on the temperature rise (temperature gradient) of the heating unit 84 during this set time, the control unit 150 can estimate the temperature rise completion time.

  Subsequently, the control unit 150 determines the timing at which each unit of the sheet manufacturing apparatus 100 starts conveyance so as to correspond to the temperature increase completion time estimated in step ST20 (step ST21). Control unit 150 starts driving forward in accordance with the timing determined in step ST21 (step ST22).

Here, the forward drive will be described with reference to FIGS. 15 and 16.
15 and 16 are diagrams illustrating an operation example of the sheet manufacturing apparatus 100. FIG. In FIG. 15, A is a timing chart showing the temperature change of the heating unit 84, and B is a schematic diagram showing the manufacturing process of the sheet S corresponding to the timing chart of A. In FIG. 16, A is a timing chart showing a temperature change of the heating unit 84, and B is a schematic diagram showing a manufacturing process of the sheet S corresponding to the timing chart of A.

  FIG. 16 shows the operation of the sheet manufacturing apparatus 100 when the forward drive described with reference to FIG. 9 is performed, and FIG. 15 shows the operation of the sheet manufacturing apparatus 100 when the forward drive is not performed for comparison with FIG. .

In FIG. 15A, the vertical axis indicates the passage of time, and time t0 indicates the timing at which the heating of the heating unit 84 is started.
Under the control of the control unit 150, the temperature rise of the calendar roller 85 is started at time t0, and the temperature of the heating unit 84 rises with time as indicated by the temperature change G. When the temperature of the heating unit 84 reaches the temperature T11 that is the target temperature at time t11, the control unit 150 starts conveyance in the sheet manufacturing apparatus 100 as shown in B of FIG.

  The process in which the sheet manufacturing apparatus 100 manufactures the sheet S can be represented by the arrangement order of the drive units included in the sheet manufacturing apparatus 100, as shown in FIG. The arrangement order of the drive units is the order in the conveyance path in which the raw material MA, the material, and the sheet S are conveyed in the sheet manufacturing apparatus 100. Specifically, the supply unit 10, the crushing unit 12, the defibrating unit 20, the drum unit 41 as the classification unit, the sorting unit 40, the first web forming unit 45, the rotating body 49, the mixing unit 50, and the second web forming. The unit 70, the pressurizing unit 82, the heating unit 84, the cutting unit 90, and the discharge unit 96 are arranged in this order.

  In the example of FIG. 15, the control unit 150 detects that the temperature of the heating unit 84 has reached the target temperature at time t11, and starts conveying the raw material MA at time t11. Then, according to the manufacturing process of the sheet S, the raw material MA, the material derived from the raw material MA, and the sheet S are conveyed. For example, after the supply of the raw material MA is started at time t11, the timing at which the second web W2 constituted by the leading raw material MA reaches the heating unit 84 is set as time t12. In this case, the period TE12 of time t0-t12 is required until the raw material MA passes through the path M1 and reaches the heating unit 84. Furthermore, the timing at which the sheet S composed of the raw material MA started to be supplied at time t11 is discharged to the discharge unit 96 is time t13. A period TE13 of time t0-t13 is required until the raw material MA passes through the path M2 and reaches the discharge unit 96.

The sheet manufacturing apparatus 100 performs forward driving in steps ST21 to ST22.
As shown in FIG. 16, the control unit 150 calculates a temperature gradient θ related to the temperature rise of the heating unit 84 at time t <b> 22 after a predetermined time has elapsed since the heating of the heating unit 84 was started. The temperature gradient θ is executed at a timing when the temperature of the heating unit 84 detected by the control unit 150 is lower than the target temperature T11. For example, it can be time t21 after the elapse of the set time referred to in the operation of step ST31 (FIG. 11). The temperature gradient θ can be obtained by dividing the temperature difference between the temperature T1 at time t21 and the temperature T0 at the start of temperature increase by the elapsed time from the temperature increase start (time t0) to time t21.

  In step ST20 (FIG. 9), the controller 150 estimates the time when the temperature of the heating unit 84 reaches the target temperature T11 based on the temperature gradient θ. Assume that the estimated time is time t11 *. For example, the estimated time t11 * can be obtained by a calculation in which the temperature gradient θ, the initial temperature T0, the target temperature T1, and the like are applied to data relating to an arithmetic expression or a temperature rise curve stored in advance in the storage unit 140. In addition, the storage unit 140 stores a table that associates the estimated time t11 * with the temperature gradient θ, the initial temperature T0, the target temperature T1, and the like, and the control unit 150 obtains the estimated time t11 * with reference to this table. It may be.

  In step ST21 (FIG. 9), the control unit 150 determines a time t22 that is a timing for starting the supply of the raw material MA (conveyance start timing) based on the estimated time t11 *.

  When the timing at which the raw material MA supplied from the supply unit 10 reaches the heating unit 84 is time t23, the time t23 is later than the timing at which the temperature of the heating unit 84 reaches the target temperature T11. In this case, since the second web W2 processed and molded from the raw material MA supplied at time t22 reaches the heating unit 84 after the heating unit 84 reaches an appropriate heating temperature, the second web W2 is appropriately selected. Heat treatment can be performed at various temperatures.

  In order to perform such setting, the control unit 150 compares the estimated time t11 * with the time required for the raw material MA to travel the path M1 from the supply unit 10 to the heating unit 84, and sets the time t22. decide. Specifically, the time that is back from the estimated time t11 * by the time required for the raw material MA to move on the route M1 is the limit value of the time t22. The time t22 may be any time as long as it is later than the limit value, but the closer to the temperature rise start time t0, the greater the effect of saving waiting time. For example, time t22 may be the same timing as time t21.

  When the supply of the raw material MA is started from time t22, an overlap period indicated by a symbol TE22 in the figure occurs. The overlap period TE22 is a period in which the two operations of raising the temperature of the heating unit 84 and conveying the raw material MA are performed in an overlapping manner (in parallel). By providing the overlap period TE22, the time t23 when the second web W2 reaches the heating unit 84 is earlier than the time t12 described in FIG. Accordingly, the time t24 when the sheet S is discharged to the discharge unit 96 is earlier than the time t13 described with reference to FIG. FIG. 16 shows times t12 and t13 in FIG. 15 for reference.

  Thus, by performing the forward drive, the period TE21 until the raw material MA moves through the path M1 and reaches the heating unit 84, and the time period until the raw material MA moves through the path M2 and is discharged from the discharge unit 96. The period TE22 can be effectively shortened. For this reason, it is possible to shorten the waiting time until the sheet S is discharged after the manufacture of the sheet S is started.

  Returning to FIG. 9, after starting the forward drive, the control unit 150 determines whether or not the temperature of the heating unit 84, that is, the temperature detected by the temperature sensors 308a and 308b has reached the target temperature (step ST23). The control unit 150 stands by while the temperature of the heating unit 84 has not reached the target temperature (step ST23; No). During this standby, the control unit 150 can of course control other drive units. When the target temperature is reached (step ST23; Yes), the control unit 150 starts manufacturing the sheet S, that is, starts a job (step ST24).

  Of the drive units of the sheet manufacturing apparatus 100, the units in the order 1 to 10 shown in FIG. 16 start to operate when the forward drive is started in step ST22. For example, the supply unit 10, the crushing unit 12, the defibrating unit 20, the drum unit 41, the sorting unit 40, the first web forming unit 45, the rotating body 49, the second web forming unit 70, and the pressurizing unit 82 are steps. Operation starts in ST22. Further, at step ST22 (time t22 in FIG. 16), the control unit 150 drives at least the respective units in the order 1 to 7, which are the first half of the manufacturing process of the sheet S, and the mixing unit 50 has a timing after step ST22. The operation may be started. That is, supply of the additive by the additive supply unit 52 may be started at an arbitrary timing before the subdivided body P reaches the additive supply unit 52. In this case, the control unit 150 may start the operation of the second web forming unit 70 together with the timing when the supply of the additive by the additive supply unit 52 is started. Alternatively, the control unit 150 may start the operation of the second web forming unit 70 before starting the supply of the additive by the additive supply unit 52.

  In step ST24, the control unit 150 at least displaces the heating unit 84 from the second position to the first position, and starts the heating operation by the heating unit 84. In addition, if there is a drive unit that has not started operation in step ST24 other than the heating unit 84, these drive units also start operation in step ST24.

  After starting the manufacture of the sheet S, the control unit 150 determines whether the job is completed (step ST25). For example, when the number of sheets S to be manufactured is specified in step ST13 and the manufacturing of the specified number of sheets S is completed, the job is completed. The job is also completed when the stop instruction button 161b is operated.

  When the job is not completed (step ST25; No), the control unit 150 stands by in step ST25. When the job is completed (step ST25; Yes), the control unit 150 executes a stop sequence and shifts the sheet manufacturing apparatus 100 to the stop state (step ST26). In the stop sequence, each drive unit including the heaters 339a and 339b and the humidifying heater 345 is stopped.

  Note that the stop sequence executed in step ST26 can be executed as an interrupt process when the stop instruction button 161b is operated. Further, when the operation of the standby instruction button 161d is performed, the control unit 150 may execute the operation of step ST19 as an interrupt process.

  By the way, when the heating unit 84 is displaced from the second position to the first position, the temperature may be lowered when the first rotating body 181 and the second rotating body 182 contact the second web W2. Are known. The cause of the temperature decrease is, for example, that the second web W2 is deprived of heat by the first rotating body 181 and the second rotating body 182 coming into contact with the second web W2.

  Therefore, the heating control unit 157 may raise the temperature of the heating unit 84 to a temperature higher than the target temperature set in step ST14. More specifically, when the heating control unit 157 starts to raise the temperature of the heating unit 84 in step ST16, the heating control unit 157 sets the target temperature of the heating unit 84 to be higher than the target temperature T11 set in step ST14. Temperature (here, temperature T11 ′). The control unit 150 determines in step ST23 that the temperature of the heating roller 86 has reached the target temperature T11 ′, and sets the target temperature in step ST14 when the heating unit 84 is displaced to the first position. The target temperature T11 is changed. The temperature T11 ′ can be obtained by adding a preset temperature difference ΔT to the temperature T11 after the temperature T11 is determined. The temperature difference ΔT is determined in consideration of the temperature drop due to the nip, and may be stored in advance included in the setting data 121, for example.

  Thereby, the second web W2 can be heated at an appropriate temperature in the heating unit 84 immediately after the heating unit 84 is displaced to the first position. For this reason, the quantity of the sheet | seat S of a heating defect can be reduced.

In addition, the control unit 150 may perform control to suppress overshoot of the temperature of the heating unit 84 in the process of raising the temperature of the heating unit 84 by the heaters 339a and 339b.
FIG. 17 is a timing chart showing an operation example of the sheet manufacturing apparatus 100 and shows control for suppressing overshoot when the heating unit 84 is heated. The vertical axis in FIG. 17 indicates the temperature of the heating unit 84, specifically, the detected temperatures of the temperature sensors 308a and 308b. The horizontal axis shows the passage of time.

  In FIG. 17, the temperature change G11 corresponds to a temperature change when overshoot is not suppressed. As shown in the temperature change G11, when the temperature T0 at the start of temperature rise is lower than the target temperature T11, when the capabilities of the heaters 339a and 339b are high, the heat capacity of the first rotating body 181 and the heating body 183 is large, etc. May cause overshoot. The timing at which the overshoot converges and the temperature of the heating unit 84 stabilizes is, for example, time tos shown in FIG.

The control unit 150 suppresses overshoot as shown by the temperature change G12 by performing control for repeatedly executing ON / OFF of the heaters 339a and 339b, control for switching the outputs of the heaters 339a and 339b, and the like. it can.
In this case, it is preferable that the temperature increase completion time t11 * estimated in step ST20 is a timing at which the temperature of the heating unit 84 is stabilized at or near the target temperature T11 by overshoot control. Therefore, the control unit 150 may perform a process that includes overshoot control in the process of obtaining the temperature increase completion time t11 * based on the temperature gradient θ of the temperature change G12.

  As described above, the sheet manufacturing apparatus 100 according to the embodiment has been defibrated by the supply unit 10 that supplies the raw material MA including fibers, the defibrating unit 20 that defibrates the raw material MA, and the defibrating unit 20. A heating unit 84 that heats a mixture of the defibrated material and the additive as the binder. The sheet manufacturing apparatus 100 includes a control unit 150 that determines whether the heating unit 84 is abnormal. When the control unit 150 determines that the heating unit 84 is normal, the sheet manufacturing apparatus 100 starts supplying the raw material MA by the supply unit 10. Started manufacturing S.

  According to the sheet manufacturing apparatus 100 of the present invention and the sheet manufacturing apparatus 100 to which the control method of the sheet manufacturing apparatus is applied, the raw material MA is supplied when it is determined that there is no abnormality in the heating unit 84. It is possible to prevent the sheet S heated in step S from being output. Therefore, when an abnormality occurs in the heating unit 84, this abnormality can be quickly detected, and the production of the sheet S under inappropriate conditions can be suppressed. For this reason, waste of the raw material MA and the material can be avoided.

  Moreover, the sheet manufacturing apparatus 100 includes a drive unit as a transport unit that transports at least one of the raw material MA supplied by the supply unit 10, the defibrated material defibrated by the defibrating unit 20, and the mixture. The control unit 150 controls the conveyance of the raw material MA, the material, and the sheet S by the driving unit. After determining that the heating unit 84 has no abnormality, the control unit 150 starts conveyance. Thereby, since it is determined that there is no abnormality in the heating unit 84 and the conveyance is started to manufacture the sheet S, when the abnormality in the heating unit 84 occurs, it is possible to prevent waste of the raw material MA and the material.

  In addition, the sheet manufacturing apparatus 100 includes temperature sensors 308 a and 308 b that detect the temperature of the heating unit 84. The control unit 150 obtains the temperature gradient of the heating unit 84 based on the temperature detected by the temperature sensors 308a and 308b after starting the heating of the heating unit 84, and determines the abnormality of the heating unit 84 based on the temperature gradient. To do. Thereby, abnormality of the heating part 84 can be determined appropriately based on the temperature gradient during the heating of the heating part 84.

  In addition, the controller 150 determines the temperature of the heating unit 84 to be increased based on the temperature detected by the temperature sensors 308a and 308b after starting the heating of the heating unit 84 in the first process and the second process. The timing for starting the conveyance by the conveyance unit is controlled from the gradient. Thereby, since conveyance can be started according to the temperature rise of the heating part 84, waiting time can be shortened compared with the case where conveyance is started after the temperature rising of the heating part 84 is completed.

  In addition, after the heating of the heating unit 84 is started in the second process, the control unit 150 sets the temperature detected when the temperature sensors 308a and 308b perform detection a plurality of times within a preset time. Based on this, the temperature gradient of the temperature rise of the heating unit 84 is obtained. Thereby, it is possible to suppress the influence of noise when obtaining the temperature gradient, and to detect the abnormality of the heating unit 84 with higher accuracy.

  The heating unit 84 includes heaters 339a and 339b that generate heat when energized, and includes resistance detection units 309a and 309b that detect electric resistances of the heaters 339a and 339b. The control unit 150 determines abnormality of the heating unit 84 based on the electrical resistance detected by the resistance detection units 309a and 309b in the third process. Thereby, abnormality of a heat generating body can be detected rapidly.

  The sheet manufacturing apparatus 100 includes a crushing unit 12 that crushes the raw material MA supplied by the supply unit 10, and the defibrating unit 20 defibrates the raw material MA that has been crushed by the crushing unit 12. According to this configuration, in the configuration in which the coarsely crushed raw material MA is defibrated and heated, since it is determined that there is no abnormality in the heating unit 84 and conveyance is started to manufacture the sheet S, the heating unit 84 It is possible to prevent waste of the raw material MA when an abnormality occurs.

  Further, the supply unit 10 may be configured to supply the raw material MA that has been coarsely crushed in advance to the defibrating unit 20. According to this configuration, in the configuration in which the coarsely crushed raw material MA is defibrated and heated, since it is determined that there is no abnormality in the heating unit 84 and conveyance is started to manufacture the sheet S, the heating unit 84 It is possible to prevent waste of the raw material MA when an abnormality occurs.

  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, in the said embodiment, although the structure provided with the stacker 11 as an accommodating part which accommodates raw material MA for every kind was illustrated, this invention is not limited to this, For example, the raw material defibrated by the defibrating part 20 is The structure supplied from the outside may be sufficient. In this configuration, a plurality of cartridges (not shown) containing the defibrated raw material may be provided, and the defibrated material as the raw material may be supplied to the drum unit 41 by switching from these cartridges. Moreover, it is good also as a structure which supplies the subdivision P to the pipe | tube 54 from the outside as a raw material.

  Moreover, the sheet manufacturing apparatus 100 of the said embodiment was demonstrated as the dry-type sheet manufacturing apparatus 100 which obtains material by defibrating the raw material MA in the air, and manufactures the sheet | seat S using this material and resin. . The application target of the present invention is not limited to this, and the present invention can also be applied to a so-called wet sheet manufacturing apparatus in which a raw material containing fibers is dissolved or suspended in a solvent such as water and the raw material is processed into a sheet. Further, the present invention can also be applied to an electrostatic sheet manufacturing apparatus in which a material containing fibers defibrated in the air is adsorbed on the surface of the drum by static electricity or the like, and the raw material adsorbed on the drum is processed into a sheet. In these sheet manufacturing apparatuses, the configuration of the above-described embodiment can be applied before being processed into a sheet or in a process of conveying a sheet-like material. In these sheet manufacturing apparatuses, the present invention can be applied to a control unit that controls the temperature of the heating unit as long as it includes a heating unit that heats the raw material.

  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, waste paper, or the like as a raw material MA, or may be a nonwoven 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.

DESCRIPTION OF SYMBOLS 9 ... Chute, 10 ... Supply part, 10a ... Sorting part, 11 ... Stacker, 12 ... Crushing part, 20 ... Defibration part, 26 ... Defibration part blower, 27 ... Dust collection part, 28 ... Collection blower, 40 ... Sorting section, 41 ... Drum section, 45 ... First web forming section, 46 ... Mesh belt, 48 ... Suction section, 49 ... Rotating body, 50 ... Mixing section, 52 ... Additive supply section, 52a ... Discharge section, 52b ... Supply adjusting section, 52c ... Supply pipe, 54 ... Pipe, 56 ... Mixing blower, 60 ... Deposition section, 61 ... Drum section, 62 ... Inlet port, 70 ... Second web forming section, 72 ... Mesh belt, 76 ... Suction Mechanism: 77 ... Suction blower, 79 ... Conveying unit, 79a ... Mesh belt, 80 ... Sheet forming unit, 82 ... Pressing unit, 84 ... Heating unit, 85 ... Calendar roller, 86 ... Heating roller, 90 ... Cutting unit, 92 ... First cutting part 94: Second cutting section, 96: Discharge section, 100: Sheet manufacturing apparatus, 102: Manufacturing section, 110: Control apparatus, 111: Main processor, 114: Sensor I / F, 115: Drive section I / F, 116 ... Display panel, 117 ... touch sensor, 119 ... IC reading unit, 120 ... nonvolatile storage unit, 121 ... setting data, 122 ... display data, 126 ... determination reference data, 140 ... storage unit, 150 ... control unit (determination unit) , 151 ... operating system, 153 ... operation detection unit, 154 ... detection control unit, 155 ... data acquisition unit, 156 ... drive control unit, 157 ... heating control unit, 160 ... operation screen, 161 ... operation instruction unit, 161a ... start Instruction button, 161b ... Stop instruction button, 161c ... Interruption instruction button, 161d ... Standby instruction button, 162 ... Cartridge information display , 162c ... cartridge selection unit, 163 ... sheet setting unit, 163a ... color setting unit, 163b ... thickness setting unit, 163c ... raw material setting unit, 164 ... notification unit, 181 ... first rotating body, 182 ... second rotating body , 183 ... heating element, 190 ... displacement mechanism, 202, 204, 206, 208, 210, 212 ... humidification part, 301 ... used paper residual quantity sensor, 302 ... additive residual quantity sensor, 303 ... paper discharge sensor, 304 ... amount of water Sensors, 306... Air volume sensor, 307. Paper feed motor, 317 ... Additive supply motor, 318 ... Intermediate blower, 325 ... Drum drive motor, 327 ... Belt drive motor -329 ... Dividing part drive motor, 331 ... Drum drive motor, 333 ... Belt drive motor, 335 ... Pressurization part drive motor, 337 ... Heating part drive motor, 339a, 339b ... Heater (heating element), 341 ... Roller movement Part, 343 ... vaporization type humidifier, 345 ... mist type humidifier, 345 ... humidification heater, 349 ... feed pump, 351 ... cutting section drive motor, 501 ... additive cartridge, 521 ... IC, MA ... raw material, P ... subdivision Body, S ... sheet, W1 ... first web, W2 ... second web.

Claims (9)

A supply unit for supplying raw materials including fibers;
A defibrating unit for defibrating the raw material;
A heating unit for heating a mixture of the defibrated material defibrated by the defibrating unit and the binder;
In a sheet manufacturing apparatus having a determination unit that determines abnormality of the heating unit,
The sheet manufacturing apparatus which starts supply of the said raw material by the said supply part, and starts manufacture of a sheet | seat, when the said determination part determines with the said heating part having no abnormality. A transport unit that transports at least one of the raw material supplied by the supply unit, the defibrated material defibrated by the defibrating unit, and the mixture;
A control unit for controlling conveyance by the conveyance unit,
The sheet manufacturing apparatus according to claim 1, wherein the control unit starts conveyance by the conveyance unit after the determination unit determines that there is no abnormality in the heating unit. A temperature detection unit for detecting the temperature of the heating unit;
The determination unit obtains a temperature gradient of temperature increase of the heating unit based on the temperature detected by the temperature detection unit after starting heating of the heating unit, and determines abnormality of the heating unit based on the temperature gradient The sheet manufacturing apparatus according to claim 2.   The control unit controls the timing of starting the conveyance by the conveyance unit from the temperature gradient of the temperature rise of the heating unit obtained based on the temperature detected by the temperature detection unit after the heating of the heating unit is started. The sheet manufacturing apparatus according to claim 3.   The determination unit starts heating the heating unit based on a temperature detected when the temperature detection unit performs detection a plurality of times within a preset time. The sheet manufacturing apparatus of Claim 3 or 4 which calculates | requires a temperature gradient. The heating unit has a heating element that generates heat when energized,
A resistance detector for detecting the electrical resistance of the heating element;
The sheet manufacturing apparatus according to claim 2, wherein the determination unit determines an abnormality of the heating unit based on an electrical resistance detected by the resistance detection unit. A crushing unit for crushing the raw material supplied by the supply unit,
The sheet manufacturing apparatus according to any one of claims 1 to 6, wherein the defibrating unit defibrates the raw material crushed by the crushing unit.   The sheet manufacturing apparatus according to claim 1, wherein the supply unit supplies the raw material crushed in advance to the defibrating unit. A supply unit for supplying a raw material containing fibers, a defibrating unit for defibrating the raw material, a heating unit for heating a mixture of the defibrated material defibrated by the defibrating unit, and the binder, and the heating A determination unit for determining an abnormality of a part, and a control method for a sheet manufacturing apparatus,
A control method for a sheet manufacturing apparatus, wherein when the determination unit determines that there is no abnormality in the heating unit, the supply unit starts supplying the raw material and starts manufacturing a sheet.

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