JP2018001485A - Sheet manufacturing device and control method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress sticking of deposits to a heating part in a sheet manufacturing device.SOLUTION: Provided is a sheet manufacturing device for manufacturing a sheet by using a raw material containing fibers, which includes: a deposition part for depositing a material containing fibers and a resin; a heating part which includes a first rotor and a second rotor for heating a deposit deposited by the deposition part; a displacement mechanism which displaces the heating part to a first position at which the first rotor and the second rotor hold and heat the deposit and to a second position at which the first rotor and the second rotor are isolated from each other; and a driving part for rotating at least the rotor on a contacting side of the deposit at the second position.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a sheet manufacturing apparatus and a manufacturing method of a sheet manufacturing apparatus.

  2. Description of the Related Art Conventionally, a manufacturing apparatus has been disclosed in which a mat-like composition in which a thermosetting resin and a radical initiator are added to a granular or fibrous raw material is hot-pressed with a hot-pressure roller to form a fiberboard (for example, a patent) Reference 1).

JP 2001-113509 A

  However, in the above manufacturing apparatus, when the conveyance processing of the mat-shaped composition is stopped, the mat-shaped composition comes into contact with the hot-pressing roller, is affected by the heating by the hot-pressing roller, and is included in the mat-shaped composition. There existed a subject that resin melt | dissolved and a mat-like composition will adhere to a hot-pressing roller.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A sheet manufacturing apparatus according to this application example is a sheet manufacturing apparatus that manufactures a sheet using a raw material including fibers, the deposition unit for depositing a material including fibers and a resin, A heating unit for heating the deposit deposited by the deposition unit, the heating unit including a first rotating body and a second rotating body, and the first rotating body and the second rotating body are deposited. A displacement mechanism for displacing the heating unit between a first position for sandwiching and heating an object and a second position where the first rotating body and the second rotating body are separated from each other; And a drive unit that rotates at least the rotating body in contact with the deposit at the two positions.

  According to this configuration, the first rotating body and the second rotating body are separated from each other by displacing the heating unit from the first position to the second position, so that the deposit is released from the sandwiched state. Further, the deposit is in contact with the rotating rotating body at the second position. Thereby, sticking of the deposit to the rotating body can be prevented.

  Application Example 2 The sheet manufacturing apparatus according to the application example is characterized in that the heating unit is located at the second position when the transport of the deposit is stopped.

  According to this structure, when conveyance of a deposit stops, since a heating part is located in a 2nd position, it can prevent sticking to the rotary body of a deposit reliably.

  Application Example 3 In the sheet manufacturing apparatus according to the application example described above, the rotation of the rotating body is stopped after the temperature of the rotating body in contact with the deposit becomes equal to or lower than a predetermined temperature.

  According to this configuration, it is possible to reliably prevent the deposits from sticking to the rotating body and reduce the power consumption of the rotating body.

  Application Example 4 In the sheet manufacturing apparatus according to the application example described above, the rotational speed at the second position of the rotating body in contact with the deposit is higher than the rotational speed at the first position.

  According to this configuration, it is possible to accelerate the cooling of the rotating body and reliably prevent the deposits from sticking to the rotating body.

  Application Example 5 The sheet manufacturing apparatus according to the application example includes a pressurizing unit that pressurizes the deposit upstream of the heating unit in the conveyance direction of the deposit, and the heating unit is the second unit. When in position, the pressurizing unit pressurizes the deposit.

  According to this configuration, the deposit is pressed by the pressurizing unit at the second position, so that the deposit can be prevented from moving downstream in the transport direction. Thereby, waste of a deposit can be omitted.

  Application Example 6 In the sheet manufacturing apparatus according to the application example, the first transport unit that is located upstream of the heating unit in the transport direction of the deposit and can transport the deposit, and the heating unit. A second transport unit located downstream in the transport direction of the deposit and capable of transporting the deposit, and when the heating unit is in the second position, the first transport unit and the second transport unit The deposit is reciprocated by a transport unit.

  According to this configuration, when the heating unit is in the second position, the deposit is reciprocated (reciprocated transport). Thereby, the heat quantity which a deposit receives with the radiant heat from a heating part can be disperse | distributed, and sticking to the rotary body of a deposit can be suppressed.

  Application Example 7 The sheet manufacturing apparatus according to the application example includes a blower that blows air to a rotating body on a side in contact with the deposit.

  According to this configuration, since the rotating body receives wind from the blower, cooling of the rotating body can be accelerated.

  Application Example 8 A method for controlling a sheet manufacturing apparatus according to this application example includes a deposition unit for depositing a material containing fibers and a resin, and a heating unit for heating the deposit deposited by the deposition unit. A heating unit including a first rotating body and a second rotating body, a first position for the first rotating body and the second rotating body to sandwich and heat the deposit, and A displacement mechanism for displacing the heating unit at a second position where the first rotator and the second rotator are separated from each other; and a drive unit that rotates the first rotator or the second rotator. The method of controlling a sheet manufacturing apparatus comprising: wherein, when the heating unit is displaced to the second position, at least a rotating body in contact with the deposit is rotated.

  According to this configuration, when the heating unit is displaced from the first position to the second position, the first rotating body and the second rotating body are separated from each other, and the deposit is in contact with the rotating rotating body. It becomes. Thereby, sticking of the deposit to the rotating body can be prevented.

Schematic which shows the structure of the sheet manufacturing apparatus concerning 1st Embodiment. Schematic which shows the structure of the heating part concerning 1st Embodiment. Schematic which shows the structure of the heating part concerning 1st Embodiment. Schematic which shows the structure of the displacement mechanism concerning 1st Embodiment. Schematic which shows the structure of the displacement mechanism concerning 1st Embodiment. Schematic which shows the structure of the transmission mechanism concerning 1st Embodiment. Schematic which shows the structure of the transmission mechanism concerning 1st Embodiment. The block diagram which shows the structure of the control part of the sheet manufacturing apparatus concerning 1st Embodiment. The flowchart which shows the control method of the sheet manufacturing apparatus concerning 1st Embodiment. The flowchart which shows the control method of the sheet manufacturing apparatus concerning 1st Embodiment. Schematic which shows the structure of the sheet manufacturing apparatus concerning 2nd Embodiment. The flowchart which shows the control method of the sheet manufacturing apparatus concerning 2nd Embodiment. The schematic diagram which shows the operation | movement method of the sheet manufacturing apparatus concerning 2nd Embodiment. The schematic diagram which shows the operation | movement method of the sheet manufacturing apparatus concerning 2nd Embodiment. Schematic which shows the structure of the sheet manufacturing apparatus concerning 3rd Embodiment. Schematic which shows the structure of the sheet manufacturing apparatus concerning the modification 1. FIG. Schematic which shows the structure of the sheet manufacturing apparatus concerning the modification 2. FIG.

  Hereinafter, first to third embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each member or the like is shown differently from the actual scale so as to make each member or the like recognizable.

(First embodiment)
First, the configuration of the sheet manufacturing apparatus will be described. FIG. 1 is a schematic diagram illustrating a configuration of a sheet manufacturing apparatus according to the present embodiment. As shown in FIG. 1, the sheet manufacturing apparatus 100 includes a supply unit 10, a manufacturing unit 102, and a control unit 104. The manufacturing unit 102 manufactures a sheet. The manufacturing unit 102 includes 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, and a second web forming unit. 70, a sheet forming unit 80, and a cutting unit 90.

  The supply unit 10 supplies raw materials to the crushing unit 12. The supply unit 10 is, for example, an automatic input unit for continuously supplying raw materials to the crushing unit 12. The raw material supplied by the supply part 10 contains fibers, such as a used paper and a pulp sheet, for example.

  The crushing unit 12 cuts the raw material supplied by the supply unit 10 into air into pieces. The shape and size of the strip is, for example, a strip of several cm square. In the illustrated example, the crushing unit 12 has a crushing blade 14, and the charged raw material can be cut by the crushing blade 14. As the crushing part 12, a shredder is used, for example. The raw material cut by the crushing unit 12 is received by the hopper 1 and then transferred (conveyed) to the defibrating unit 20 through the pipe 2.

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

  What has passed through the defibrating unit 20 is referred to as “defibrated material”. In addition to the defibrated fibers that have been unraveled, the “defibrated material” includes resin particles (resins that bind multiple fibers together), ink, toner, etc. In some cases, additives such as colorants, anti-bleeding materials, and paper strength enhancing agents 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. Specifically, an impeller mill is used as the defibrating unit 20. The defibrating unit 20 has a function of generating an air flow that sucks the raw material and discharges the defibrated material. As a result, the defibrating unit 20 can suck the raw material together with the airflow from the introduction port 22 with the airflow generated by itself, defibrate, and transport the defibrated material to the discharge port 24. The defibrated material that has passed through the defibrating unit 20 is transferred to the sorting unit 40 via the tube 3. In addition, the airflow for conveying a defibrated material from the defibrating unit 20 to the sorting unit 40 may use an airflow generated by the defibrating unit 20, or an airflow generation device such as a blower is provided, May be used.

  The sorting unit 40 introduces the defibrated material defibrated by the defibrating unit 20 from the introduction port 42 and sorts the defibrated material according to the length of the fiber. The sorting unit 40 includes a drum unit 41 and a housing unit 43 that accommodates the drum unit 41. As the drum part 41, for example, a sieve is used. The drum portion 41 has a net (filter, screen), fibers or particles smaller than the mesh size of the mesh (one passing through the mesh, the first selection), and fibers larger than the mesh size of the mesh. Undefibrated pieces and lumps (those that do not pass through the net, second sort) can be separated. For example, the first selection is transferred to the mixing unit 50 via the pipe 7. The second selected item is returned to the defibrating unit 20 from the discharge port 44 through the pipe 8. Specifically, the drum part 41 is a cylindrical sieve that is rotationally driven by a motor. As the net of the drum portion 41, for example, a metal net, an expanded metal obtained by extending a cut metal plate, or a punching metal in which a hole is formed in the metal plate by a press machine or the like is used.

  The first web forming unit 45 conveys the first sorted product that has passed through the sorting unit 40 to the mixing unit 50. The first web forming unit 45 includes a mesh belt 46, a stretching roller 47, and a suction unit (suction mechanism) 48.

  The suction unit 48 can suck the first sorted matter dispersed in the air through the opening (opening of the mesh) of the sorting unit 40 onto the mesh belt 46. The first selection is deposited on the moving mesh belt 46 to form the web V. The basic configurations of the mesh belt 46, the stretching roller 47, and the suction unit 48 are the same as the mesh belt 72, the stretching roller 74, and the suction mechanism 76 of the second web forming unit 70 described later.

  The web V is formed in a soft and swelled state containing a lot of air by passing through the sorting unit 40 and the first web forming unit 45. The web V deposited on the mesh belt 46 is put into the tube 7 and conveyed to the mixing unit 50.

  The rotating body 49 can cut the web V before the web V is conveyed to the mixing unit 50. In the illustrated example, the rotator 49 has a base 49a and a protrusion 49b protruding from the base 49a. The protrusion 49b has, for example, a plate shape. In the illustrated example, four protrusions 49b are provided, and four protrusions 49b are provided at equal intervals. When the base 49a rotates in the direction R, the protrusion 49b can rotate around the base 49a. By cutting the web V by the rotating body 49, for example, the fluctuation in the amount of defibrated material per unit time supplied to the deposition unit 60 can be reduced.

  The rotating body 49 is provided in the vicinity of the first web forming portion 45. In the illustrated example, the rotating body 49 is provided in the vicinity of the stretching roller 47a located on the downstream side in the path of the web V (next to the stretching roller 47a). The rotating body 49 is provided at a position where the protrusion 49b can come into contact with the web V and not in contact with the mesh belt 46 on which the web V is deposited. Thereby, it is possible to suppress the mesh belt 46 from being worn (damaged) by the protrusion 49b. The shortest distance between the protrusion 49b and the mesh belt 46 is, for example, not less than 0.05 mm and not more than 0.5 mm.

  The mixing unit 50 mixes the first sorted product that has passed through the sorting unit 40 (the first sorted product conveyed by the first web forming unit 45) and the additive containing resin. The mixing unit 50 includes an additive supply unit 52 that supplies the additive, a pipe 54 that conveys the first selected product and the additive, and a blower 56. In the illustrated example, the additive is supplied from the additive supply unit 52 to the pipe 54 via the hopper 9. The tube 54 is continuous with the tube 7.

  In the mixing unit 50, an air flow is generated by the blower 56, and the first selection product and the additive can be mixed and conveyed in the pipe 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. There may be.

  As the additive supply unit 52, a screw feeder as shown in FIG. 1 or a disk feeder (not shown) is used. The additive supplied from the additive supply unit 52 includes a resin for binding a plurality of fibers. At the time when the resin is supplied, the plurality of fibers are not bound. The resin melts when passing through the sheet forming portion 80 and binds a plurality of fibers.

  The resin supplied from the additive supply unit 52 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, polybutylene terephthalate, nylon, polyamide, polycarbonate, polyacetal, polyphenylene sulfide, polyether ether ketone, and the like. These resins may be used alone or in combination. The additive supplied from the additive supply unit 52 may be fibrous or powdery.

  In addition to the resin that binds the fibers, the additive supplied from the additive supply unit 52 prevents coloring of the fibers and the aggregation of the fibers depending on the type of sheet to be produced. An anti-agglomeration material inhibitor for the purpose of the treatment may contain a flame retardant for making the fibers difficult to burn. The mixture (mixture of the first selection product and the additive) that has passed through the mixing unit 50 is transferred to the deposition unit 60 via the pipe 54.

  The depositing unit 60 deposits a material (mixture) containing fibers and resin. Specifically, the mixture that has passed through the mixing unit 50 is introduced from the introduction port 62, and the entangled defibrated material (fibers) is loosened and dropped while being dispersed 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 deposition unit 60 includes a drum unit 61 and a housing unit 63 that accommodates the drum unit 61. As the drum part 61, a rotating cylindrical sieve is used. The drum unit 61 has a net, and drops fibers or particles (those that pass through the net) included in the mixture that has passed through the mixing unit 50 that are smaller than the mesh opening size. 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.

  The second web forming unit 70 deposits the passing material that has passed through the deposition unit 60 to form the web W. The second web forming unit 70 includes, for example, a mesh belt 72, a tension roller 74, and a suction mechanism 76.

  While moving, the mesh belt 72 accumulates the passing material that has passed through the opening of the accumulation unit 60 (the opening of the mesh). The mesh belt 72 is stretched by a stretching roller 74, and is configured to allow air to pass therethrough. The mesh belt 72 moves as the stretching roller 74 rotates. While the mesh belt 72 continuously moves, the passing material that has passed through the depositing section 60 continuously accumulates, whereby the web W as the deposit is formed on the mesh belt 72. The mesh belt 72 is made of, for example, metal, resin, cloth, or non-woven fabric.

  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 can generate an air flow directed downward (air flow directed from the accumulation unit 60 toward the mesh belt 72). By the suction mechanism 76, the mixture dispersed in the air by the deposition unit 60 can be sucked onto the mesh belt 72. Thereby, the discharge speed from the deposition part 60 can be increased. 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.

  As described above, the web W in a state of being soft and swelled with a large amount of air is formed by passing through the deposition part 60 and the second web forming part 70. The web W deposited on the mesh belt 72 is conveyed to the sheet forming unit 80.

  In the illustrated example, a humidity control unit 78 that adjusts the humidity of the web W is provided. The humidity control unit 78 can adjust the amount ratio of the web W and water by adding water or water vapor to the web W.

  The sheet forming unit 80 forms the sheet S by pressurizing and heating the web W deposited on the mesh belt 72. In the sheet forming unit 80, by heating the mixture of the defibrated material and the additive mixed in the web W, the plurality of fibers in the mixture are bound to each other via the additive (resin). Can do.

  The sheet forming unit 80 includes a pressurizing unit 82 that pressurizes the web W, and a heating unit 84 that heats the web W pressed by the pressurizing unit 82. The pressurizing unit 82 includes a pair of calendar rollers 85 and applies pressure to the web W. When the web W is pressed, its thickness is reduced (thinned), and the density of the web W is increased. The heating unit 84 includes a pair of heating rollers 86. By forming the heating unit 84 as the heating roller 86, the sheet S is formed while the web W is continuously conveyed as compared with the case where the heating unit 84 is configured as a plate-like pressing device (flat plate pressing device). Can do. Here, the calendar roller 85 (pressure unit 82) can apply a pressure higher than the pressure applied to the web W by the heating roller 86 (heating unit 84). The number of calendar rollers 85 and heating rollers 86 is not particularly limited. The detailed configuration of the heating unit 84 will be described later.

  The cutting unit 90 cuts the sheet S formed by the sheet forming unit 80. In the illustrated example, the cutting unit 90 includes a first cutting unit 92 that cuts the sheet S in a direction that intersects the conveyance direction of the sheet S, and a second cutting unit 94 that cuts the sheet S in a direction parallel to the conveyance direction. ,have. The second cutting unit 94 cuts the sheet S that has passed through the first cutting unit 92, for example. A pair of conveyance rollers 97 and 98 having a driving roller capable of conveying the sheet S is disposed on the upstream side in the conveyance direction of the first cutting unit 92.

  Thus, a single-sheet sheet S having a predetermined size is formed. The cut sheet S is discharged to the discharge unit 96.

  Next, the configuration of the heating unit will be described. The sheet manufacturing apparatus 100 according to the present embodiment forms the sheet S by heating and pressurizing the web W (the deposit formed by the deposition unit 60) in the above-described sheet forming unit 80 (heating unit 84). 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.

  2 and 3 are schematic views showing the configuration of the heating unit of the present embodiment. As shown in FIG. 2, the heating unit 84 (a pair of heating rollers 86) 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 web W is sandwiched and heated between the first rotating body 181 and the second rotating body 182. The sheet S is configured to be pressurized. Moreover, the heating body 183 is arrange | positioned so that the outer peripheral surface of the 2nd rotary body 182 can be heated. Each of the first rotating body 181 and the heating body 183 has a heat source H (for example, a halogen heater) inside. Instead of heating the second rotating body 182 with the heating body 183, the second rotating body 182 may be heated with a non-contact heater (for example, an infrared heater or a carbon heater).

  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.

  In addition, 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 the web W and apply heat and pressure, and the first rotating body 181. And the second rotating body 182 are configured to be displaceable to a second position (see FIG. 3) where they are separated from each other. In the present embodiment, as shown in FIG. 3, the web W (sheet S) is slackened in the direction of gravity at the second position where the first rotating body 181 and the second rotating body 182 are separated from each other. It will be in the state which contact | connected the top part of the rotary body 181. FIG. That is, the first rotating body 181 is a rotating body on the side in contact with the web W (sheet S) at the second position where the first rotating body 181 and the second rotating body 182 are separated from each other.

  The sheet manufacturing apparatus 100 of this embodiment includes a displacement mechanism 190 for displacing the position of the heating unit 84 between the first position and the second position. The displacement mechanism 190 may displace either the first rotating body 181 or the second rotating body 182, or may displace both the first rotating body 181 and the second rotating body 182. In the displacement mechanism 190 of this embodiment, the 2nd rotary body 182 is comprised with respect to the 1st rotary body 181 so that a displacement is possible.

  4 and 5 are schematic views showing the configuration of the displacement mechanism of the present embodiment. As shown in FIGS. 4 and 5, the displacement mechanism 190 can rotate the first bearing portion 193 that rotatably supports the rotating shaft 191 of the first rotating body 181 and the rotating shaft 192 of the second rotating body 182. It has the 2nd bearing part 194 to support, the 1st rod 195a, and the 2nd rod 195b. The first bearing portion 193 and the second bearing portion 194 are connected to each other so as to be rotatable 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 (not shown) that drives the second rod 195b to rotate 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. When the second rod 195b is rotated clockwise in the state shown in FIG. 4 (second position), as shown in FIG. 5, the first rotating body 181 and the second rotating body 182 are brought into 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. 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 a second position where they are separated from each other.

  In the second position where the first rotator 181 and the second rotator 182 are separated from each other, at least the first rotator 181 on the side in contact with the web W is configured to be rotatable. In the present embodiment, when the heating unit 84 is in the second position, the first rotating body 181 and the second rotating body 182 are each configured to be rotationally driven. The sheet manufacturing apparatus 100 of the present embodiment includes a driving unit 201 that rotationally drives the first rotating body 181, and the second position without transmitting the driving force by the driving unit 201 to the second rotating body 182 at the first position. And a transmission mechanism 200 that transmits the driving force of the driving unit 201 to the second rotating body 182.

  6 and 7 are schematic views showing the configuration of the transmission mechanism of the present embodiment. As shown in FIGS. 6 and 7, the transmission mechanism 200 includes a drive gear 202, a main gear 203, a first gear 204, a second gear 205, a third gear 206, and a fourth gear 207. . A drive gear 202 is connected to a rotation shaft of the drive unit 201 (a drive unit that rotates the first rotating body 181). A main gear 203 is engaged with the drive gear 202, and a rotation shaft 191 of the first rotating body 181 is connected to the main gear 203. The first gear 204 is engaged with the main gear 203, and the second gear 205 is engaged with the first gear 204. A third gear 206 is connected to the rotation shaft of the second gear 205 via a one-way clutch (not shown). A fourth gear 207 is engaged with the third gear 206, and a rotation shaft 192 of the second rotating body 182 is connected to the fourth gear 207.

  When the second rotating body 182 is not in contact with the first rotating body 181 (in the second position), the second rotating body 182 is rotationally driven by the driving force transmitted by the transmission mechanism 200. Here, the transmission mechanism 200 is configured such that the peripheral speed of the first rotating body 181 and the peripheral speed of the second rotating body 182 are different, and in the second position, the second rotating body 182 is the first rotating body. It rotates at a peripheral speed slower than the peripheral speed of 181. Here, the peripheral speed of the second rotator 182 is made about 10% slower than the peripheral speed of the first rotator 181.

  When the second rotating body 182 comes into contact with the first rotating body 181 (when the first rotating body 181 and the second rotating body 182 are displaced to the first position where the web W is sandwiched), the driving force transmitted by the transmission mechanism 200 is used. Since the peripheral speed of the rotating second rotator 182 is slower than the peripheral speed of the first rotator 181, the third gear 206, which is a one-way gear, idles, and the second rotator 182 is the outer peripheral surface of the first rotator 181 ( It is driven to rotate by friction with the surface of the web W being sandwiched. That is, in the first position, the driving force by the drive unit 201 is not transmitted to the second rotating body 182, and the second rotating body 182 follows the first rotating body 181. Note that the peripheral speed of the second rotating body 182 is slower than the peripheral speed of the first rotating body 181 in consideration of an increase in the peripheral speed of the second rotating body 182 composed of the soft body 185 due to thermal expansion. The transmission mechanism 200 is configured as described above.

  In this way, by configuring the transmission mechanism 200 so as not to transmit the driving force of the drive unit 201 to the second rotating body 182 at the first position, the second rotating body 182 becomes the first rotating body 181 at the first position. Since it can be driven, the web W can be stably conveyed by the first rotating body 181 and the second rotating body 182. Note that if the driving force of the drive unit 201 is transmitted to the second rotating body 182 even at the first position, the difference between the peripheral speeds of the first rotating body 181 and the second rotating body 182 (of the second rotating body 182). The web W cannot be stably conveyed due to a speed difference caused by thermal expansion and a speed difference caused by component tolerance. If only one of the first rotating body 181 and the second rotating body 182 is rotated and displaced to the first position, the first rotating body 181 and the second rotating body 182 are connected to the web. When sandwiching W, an impact is applied to the web W and the quality of the sheet is lowered.

  Next, the configuration of the control unit of the sheet manufacturing apparatus will be described. In addition, in this embodiment, the structure of the control part concerning a heating part and its peripheral part is mainly demonstrated. FIG. 8 is a block diagram illustrating a configuration of a control unit of the sheet manufacturing apparatus according to the present embodiment. As shown in FIG. 8, the control unit 104 includes a command unit 130 and a driver 140. The command unit 130 includes a CPU 132, a ROM 133 as a storage unit, a RAM 134, and an input / output interface 131. The CPU 132 processes various signals input via the input / output interface 131 based on data in the ROM 133 and RAM 134, and inputs and outputs A control signal is output to the driver 140 via the interface 131. For example, the CPU 132 performs various controls based on a drive program stored in the ROM 133.

  The driver 140 includes motor drive units 141, 142, 143, 144, 145, 146 corresponding to each motor, heater drive units 147, 148 corresponding to each heater, and the like. Then, based on the control signal from the command unit 130, the motor drive unit 141 drives and controls the motor applied to the stretching roller 74. The motor driving unit 142 controls driving of the motor applied to the pressing unit 82. The motor driving unit 143 controls driving of the motor applied to the displacement mechanism 190. The motor driving unit 144 controls driving of the driving unit (motor) 201 applied to the transmission mechanism 200. The motor drive unit 145 drives and controls a motor applied to the transport roller pair 97. The motor driving unit 146 drives and controls a motor applied to the transport roller pair 98. The heater driving unit 147 drives and controls the heat source H applied to the first rotating body 181, and the heater driving unit 148 drives and controls the heat source H applied to the heating body 183.

  In addition, a temperature detection unit that detects the temperature of the first rotating body 181 and a temperature detection unit that detects the temperature of the second rotating body 182 are each connected to the command unit 130.

  Next, a control method for the sheet manufacturing apparatus will be described. In the present embodiment, a control method for the heating unit and its peripheral part will be mainly described. 9 and 10 are flowcharts showing a control method of the sheet manufacturing apparatus according to the present embodiment. Specifically, FIG. 9 is a flowchart showing a control method when the conveyance of the web W is stopped in the sheet manufacturing apparatus (conveyance stop process), and FIG. 10 is a case where the conveyance of the web W is started in the sheet manufacturing apparatus. It is a flowchart which shows the control method of (conveyance start process).

First, the conveyance stop process will be described.
As shown in FIG. 9, in step S11, it is determined whether or not the conveyance of the web W is to be stopped. When it is determined in step S11 that the conveyance of the web W is to be stopped, for example, when the user performs an operation for stopping the manufacture of the sheet (YES), the process proceeds to step S12. On the other hand, if the conveyance of the web W is not stopped (NO), the process returns to step S11.

  When the process proceeds to step S12, the operation of the heat source H is stopped. Specifically, a control signal is transmitted to stop the operation of the heat source H of the first rotating body 181 and the heat source H of the heating body 183 that heats the second rotating body 182.

  Next, in step S13, the conveyance of the web W (deposit) is stopped. Specifically, a control signal is transmitted, the tension roller 74, the pressurizing unit 82 (calendar roller 85), the heating unit 84 (first rotating body 181 and second rotating body 182), and transport roller pairs 97, 98. Etc. is stopped. Thereby, conveyance of the web W stops.

  Next, in step S14, the heating unit 84 is displaced from the first position to the second position. That is, when the conveyance of the web W is stopped, the heating unit 84 is located at the second position. Specifically, a control signal is transmitted to the motor applied to the displacement mechanism 190 to displace the heating unit 84 to the second position. As a result, the first rotating body 181 and the second rotating body 182 are separated from the state (first position) in which the web W is sandwiched between the first rotating body 181 and the second rotating body 182 of the heating unit 84 (the first position). 2 position). At this time, the pressurizing unit 82 (calendar roller 85) and the transport roller pair 97, 98 are in a stopped state. That is, the pressurization unit 82 (calendar roller 85) pressurizes (nips) the web W, and the conveyance roller pairs 97 and 98 are held in a state where the sheet S is pressed (nipped).

  Next, in step S15, the first rotating body 181 and the second rotating body 182 are driven to rotate. Specifically, a control signal is transmitted to the drive unit 201 to drive the transmission mechanism 200. As a result, the first rotating body 181 and the second rotating body 182 rotate at the second position where the first rotating body 181 and the second rotating body 182 are separated from each other. More specifically, in the second position, the first rotating body 181 rotates in contact with the web W (see FIG. 3). At this time, the pressurizing unit 82 (calendar roller 85) pressurizes (nips) the web W. For this reason, the movement of the web W to the downstream side in the conveyance direction can be prevented, and the waste of the web W can be eliminated. When the heating unit 84 is positioned at the second position, the pressure (load) applied to the web W by the pressing unit 82 (calendar roller 85) is applied when the heating unit 84 is positioned at the first position. You may set so that it may become lower than the pressure (load) with respect to the web W of the press part 82 (calendar roller 85). In this way, generation | occurrence | production of the impression of the web W can be reduced.

  In step S15, the rotation speed of the first rotating body 181 may be further increased. That is, drive control may be performed so that the rotation speed of the first rotator 181 at the second position is faster than the rotation speed of the first rotator 181 at the first position. If it does in this way, the cooling of the 1st rotary body 181 can be advanced, and sticking of the web W to the 1st rotary body 181 can be prevented reliably.

  Next, in step S16, the temperature of the outer peripheral surface of the first rotating body 181 is acquired. In the present embodiment, the temperatures of the outer peripheral surfaces of the first rotating body 181 and the second rotating body 182 are acquired. Specifically, detection data is acquired from each temperature detection unit of the first rotating body 181 and the second rotating body 182.

  Next, in step S17, it is determined whether or not the temperatures of the outer peripheral surfaces of the first rotating body 181 and the second rotating body 182 are equal to or lower than a predetermined temperature. Specifically, it is determined whether the temperature of the outer peripheral surface of the first rotating body 181 is equal to or lower than a predetermined temperature and whether the temperature of the outer peripheral surface of the second rotating body 182 is equal to or lower than a predetermined temperature. The predetermined temperature on the outer peripheral surface of the first rotating body 181 and the predetermined temperature on the outer peripheral surface of the second rotating body 182 may be the same temperature or different temperatures. And when it judges that the temperature of the outer peripheral surface of the 1st rotary body 181 and the 2nd rotary body 182 is below predetermined temperature (YES), it transfers to step S18 and the 1st rotary body 181 and the 2nd rotary body 182 are moved. If it is determined that the temperature of the outer peripheral surface is not lower than the predetermined temperature (NO), the process returns to step S16.

  Next, when the process proceeds to step S18, the rotational driving of the first rotating body 181 and the second rotating body 182 is stopped. Specifically, a control signal is transmitted to the drive unit 201 to stop driving the transmission mechanism 200. Thereby, the rotation of the first rotating body 181 and the second rotating body 182 stops at the second position where the first rotating body 181 and the second rotating body 182 are separated from each other. As described above, the rotation of the first rotating body 181 and the second rotating body 182 is stopped after the temperature of the outer peripheral surfaces of the first rotating body 181 and the second rotating body 182 is equal to or lower than a predetermined temperature, so that the web W While sticking to the 1st rotary body 181 can be prevented reliably, the power consumption of the drive part 201 can be reduced. Thus, the conveyance stop process is completed.

  In the transport stop process, the process of step S13 may be performed before the process of step S12, or these processes may be performed simultaneously.

Next, the conveyance start process will be described.
As shown in FIG. 10, in step S21, it is determined whether or not the conveyance of the web W is to be started. At this time, the first rotating body 181 and the second rotating body 182 of the heating unit 84 are in a second position separated from each other. When it is determined in step S21 that the conveyance of the web W is started, for example, when the user performs an operation for starting the manufacture of the sheet (YES), the process proceeds to step S22. On the other hand, when the conveyance of the web W is not started (NO), the process returns to step S21.

  When the process proceeds to step S22, rotation driving of the first rotating body 181 and the second rotating body 182 is started. Specifically, a control signal is transmitted to the drive unit 201 to drive the transmission mechanism 200. Thereby, in the 2nd position, the 1st rotary body 181 and the 2nd rotary body 182 rotate.

  Next, in step S23, the heat source H is operated. Specifically, a control signal is transmitted to operate the heat source H of the first rotating body 181 and the heat source H of the heating body 183 that heats the second rotating body 182. By heating while rotating the first rotator 181 and the second rotator 182 at the second position, the surface temperatures of the first rotator 181 and the second rotator 182 can be made uniform in the circumferential direction. . If the second rotating body 182 is heated in a stopped state, only the contact portion with the heating body 183 is heated, so that the surface temperature of the second rotating body 182 is made uniform in the circumferential direction. I can't. Further, if the first rotating body 181 is heated in a stopped state, the heat from the heat source H is transmitted non-uniformly due to the influence of convection and the like, so that the surface temperature of the first rotating body 181 is made uniform in the circumferential direction. I can't.

  Next, in step S24, the temperatures of the outer peripheral surfaces of the first rotating body 181 and the second rotating body 182 are acquired. Specifically, detection data is acquired from each temperature detection unit of the first rotating body 181 and the second rotating body 182.

  Next, in step S25, it is determined whether or not the temperatures of the outer peripheral surfaces of the first rotating body 181 and the second rotating body 182 have reached a predetermined temperature. Specifically, it is determined whether the temperature of the outer peripheral surface of the first rotating body 181 reaches a predetermined temperature and whether the temperature of the outer peripheral surface of the second rotating body 182 reaches a predetermined temperature. The predetermined temperature on the outer peripheral surface of the first rotating body 181 and the predetermined temperature on the outer peripheral surface of the second rotating body 182 may be the same temperature or different temperatures. When it is determined that the temperatures of the outer peripheral surfaces of the first rotating body 181 and the second rotating body 182 have reached a predetermined temperature (YES), the process proceeds to step S26, and the first rotating body 181 and the second rotating body 182 are moved. If it is determined that the temperature of the outer peripheral surface of the battery does not reach the predetermined temperature (NO), the process returns to step S24.

  Next, in step S26, the heating unit 84 is displaced from the second position to the first position. Specifically, a control signal is transmitted to the motor applied to the displacement mechanism 190 to displace the heating unit 84 to the first position. As a result, the web W is sandwiched between the first rotating body 181 and the second rotating body 182 from the state (second position) where the first rotating body 181 and the second rotating body 182 of the heating unit 84 are separated (second position). 1 position). At this time, the first rotating body 181 and the second rotating body 182 may be displaced to the first position while rotating, or the rotation of the first rotating body 181 and the second rotating body 182 is stopped. The first rotating body 181 and the second rotating body 182 may be restarted after being displaced to the first position in the state and being displaced to the first position.

  Next, in step S27, the conveyance of the web W (deposit) is started. Specifically, a control signal is transmitted, the tension roller 74, the pressurizing unit 82 (calendar roller 85), the heating unit 84 (first rotating body 181 and second rotating body 182), and transport roller pairs 97, 98. Etc. are started. Thereby, conveyance of the web W (sheet | seat S) is started (refer FIG. 2). Thus, the conveyance start process ends.

  In the transfer start process, the process of step S23 may be performed before the process of step S22, or these processes may be performed simultaneously.

  As described above, according to the sheet manufacturing apparatus 100 and the control method of the sheet manufacturing apparatus 100 according to the present embodiment, the following effects can be obtained.

  When the conveyance of the web W is stopped, the first rotating body 181 and the second rotating body 182 are separated from each other by displacing the heating unit 84 from the first position to the second position. The first rotating body 181 in contact with the web W was rotated. Thereby, sticking of the web W to the 1st rotary body 181 can be prevented.

(Second Embodiment)
Next, a second embodiment will be described. Since the basic configuration of the sheet manufacturing apparatus according to the present embodiment is the same as that of the first embodiment, the description thereof will be omitted, and the different portions will be mainly described.

  FIG. 11 is a schematic diagram illustrating the configuration of the sheet manufacturing apparatus according to the present embodiment. In detail, it is the schematic which shows the structure of a heating part and its peripheral part. As shown in FIG. 11, the sheet manufacturing apparatus 100 a is located upstream of the heating unit 84 (heating roller 86) in the web W conveyance direction and is a pressurizing unit 82 as a first conveyance unit that can convey the web W. (A pair of calender rollers 85) and a second that is located downstream of the heating unit 84 (heating roller 86) in the conveyance direction of the web W (sheet S) as the deposit and can convey the web W (sheet S). A conveyance roller pair 97 as a conveyance unit. The heating unit 84 includes a first rotating body 181, a second rotating body 182, and a heating body 183. Further, a transport roller pair 98 is disposed on the downstream side in the transport direction of the transport roller pair 97. In addition, since the structure of the pressurization part 82, the heating part 84, and the conveyance roller pair 97 and 98 is the same as that of the structure of 1st Embodiment, description is abbreviate | omitted.

  Further, in the sheet manufacturing apparatus 100a, a first tension roller 301 is disposed between the pressure unit 82 and the heating unit 84 in the conveyance path of the web W, and a second tension is provided between the heating unit 84 and the conveyance roller pair 97. A tension roller 302 is disposed, and a third tension roller 303 is disposed between the transport roller pair 97 and the transport roller pair 98. The first to third tension rollers 301, 302, and 303 are configured to be able to urge the web W (sheet S) in the direction of gravity, and apply tension to the web W (sheet S). That is, in the manufacture of the sheet S, a certain amount of web W is provided between the pressing unit 82 and the heating unit 84, between the heating unit 84 and the conveyance roller pair 97, and between the conveyance roller pair 97 and the conveyance roller pair 98. The web W (sheet S) is conveyed while forming a slack (buffer) of the (sheet S).

  In addition, a position detection unit (for example, a micro switch or a light detection sensor) that detects the position of each of the first to third tension rollers 301, 302, and 303 is provided. In the present embodiment, the upper limit positions of the first to third tension rollers 301, 302, and 303 are detected. That is, the minimum slack state of the web W (sheet S) is detected. The upper limit positions of the first to third tension rollers 301, 302, and 303 can be arbitrarily set. However, the web W (sheet S) is slightly moved to prevent the web W (sheet S) from being damaged. You may set an upper limit position so that it may detect in the state which has slack. Note that the position detection unit is connected to the control unit 104. And the control part 104 reciprocates the web W (sheet | seat S) with the pressurization part 82 and the conveyance roller pair 97, when the heating part 84 exists in a 2nd position.

  Next, a control method for the sheet manufacturing apparatus will be described. FIG. 12 is a flowchart showing a control method of the sheet manufacturing apparatus according to the present embodiment. 13 and 14 are schematic views showing the operation method of the sheet manufacturing apparatus.

  As shown in FIG. 12, first, a conveyance stop process (steps S11 to S18) is executed. Note that the contents of the conveyance stop process (steps S11 to S18) are the same as the contents of the first embodiment, and a description thereof is omitted (see FIG. 9). And as shown in FIG. 13, the heating part 84 transfers to a 2nd position by a conveyance stop process (step S11-step S18), and the 1st rotary body 181 and the 2nd rotary body 182 space apart. Further, the pair of calendar rollers 85 of the pressurizing unit 82 is in a state where the web W is sandwiched and is not rotated. Further, the conveyance roller pair 97, 98 is in a state where the sheet S is nipped and not rotated. At this time, between the pressure unit 82 and the heating unit 84, between the heating unit 84 and the conveyance roller pair 97, and between the conveyance roller pair 97 and the conveyance roller pair 98, the web W (sheet S) A slack (buffer) is formed.

  Next, in step S31, the conveyance roller pair 97 is rotationally driven. Specifically, a control signal is transmitted to rotate the transport roller pair 97 so that the sheet S is transported to the transport roller pair 98 side. Thereby, as shown in FIG. 14, the slack (buffer) of the web W (sheet S) formed between the pressurizing unit 82 and the heating unit 84 and between the heating unit 84 and the conveying roller pair 97 is reduced. In addition, slack (buffer) between the transport roller pair 97 and the transport roller pair 98 increases. Along with this, the first tension roller 301 disposed between the pressure unit 82 and the heating unit 84 moves upward. In addition, the second tension roller 302 disposed between the heating unit 84 and the transport roller pair 97 also moves upward. On the other hand, the third tension roller 303 disposed between the transport roller pair 97 and the transport roller pair 98 moves downward.

Next, in step S32, it is determined whether or not the first tension roller 301 or the second tension roller 302 has reached the upper limit position. Specifically, the determination is made based on detection data of a position detection unit corresponding to the first tension roller 301 or a position detection unit corresponding to the second tension roller 302. When it is determined that the upper limit position has been reached (YES), the process proceeds to step S33, and when it is determined that the upper limit position has not been reached (NO), the process returns to step S32.
In step S32, when one of the first tension roller 301 and the second tension roller 302 reaches the upper limit position, it may be determined that the upper limit position has been reached. In step S32, When both the first tension roller 301 and the second tension roller 302 reach the upper limit position, it may be determined that the upper limit position has been reached.

  Next, when the process proceeds to step S33, a control signal is transmitted to stop the rotation driving of the transport roller pair 97. Thereby, the conveyance of the sheet S by the conveyance roller pair 97 is stopped.

  Next, in step S34, the pair of calendar rollers 85 of the pressure unit 82 are driven to rotate. Specifically, a control signal is transmitted to rotate the calendar roller 85 so that the web W is conveyed upstream in the conveyance direction of the heating unit 84. Accordingly, as shown in FIG. 13, slack (buffer) between the transport roller pair 97 and the transport roller pair 98 is reduced, and between the pressurizing unit 82 and the heating unit 84 and between the heating unit 84 and the transport roller pair. The slack (buffer) of the web W (sheet S) between 97 and 97 increases. Along with this, the third tension roller 303 disposed between the transport roller pair 97 and the transport roller pair 98 moves upward. On the other hand, the first tension roller 301 disposed between the pressure unit 82 and the heating unit 84 moves downward, and the second tension roller 302 disposed between the heating unit 84 and the transport roller pair 97 is also below. Move to.

  Next, in step S35, it is determined whether or not the third tension roller 303 has reached the upper limit position. Specifically, the determination is made based on the detection data of the position detection unit corresponding to the third tension roller 303. When it is determined that the upper limit position has been reached (YES), the process proceeds to step S36, and when it is determined that the upper limit position has not been reached (NO), the process returns to step S35.

  Next, when the process proceeds to step S <b> 36, a control signal is transmitted to stop the rotation driving of the calendar roller 85 of the pressurizing unit 82. Thereby, conveyance of the web W by the calendar roller 85 stops. That is, one reciprocation of the web W (sheet S) is completed.

  Next, in step S37, it is determined whether or not to continue the reciprocating motion of the web W (sheet S). If it is determined to continue (YES), the process proceeds to step S31. If it is determined not to continue (NO), the process ends. Whether to continue the reciprocation of the web W (sheet S) may be determined by specifying the number of reciprocations of the web W (sheet S), or may be determined by time (timer setting). May be. Furthermore, the determination may be made based on the temperature of the outer peripheral surface of the first rotating body 181.

  In this embodiment, the reciprocating motion of the web W (sheet S) is performed after performing the processing from step S11 to step S18 in the transport stop processing. However, the present invention is not limited to this. For example, in the transport stop processing You may transfer to step S31 after performing the process from step S11 to step S15.

  As described above, according to the sheet manufacturing apparatus 100a and the control method of the sheet manufacturing apparatus 100a according to the present embodiment, the following effects can be obtained.

  The heating unit 84 is set to the second position, and the web W (sheet S) is reciprocated in the transport direction. As a result, the amount of heat received by the resin contained in the web W (sheet S) by radiant heat from the heating unit 84, particularly from the first rotating body 181 can be dispersed, and the first rotating body 181 of the web W (sheet S) can be dispersed. Sticking of can be suppressed.

(Third embodiment)
Next, a third embodiment will be described. Since the basic configuration of the sheet manufacturing apparatus according to the present embodiment is the same as that of the first embodiment, the description thereof will be omitted, and the different portions will be mainly described.

  FIG. 15 is a schematic diagram illustrating the configuration of the sheet manufacturing apparatus according to the present embodiment. In detail, it is the schematic which shows the structure of the periphery of a heating part. As shown in FIG. 15, the sheet manufacturing apparatus 100 b includes a blower 401 that blows air to the first rotating body 181 that is in contact with the web W (sheet S) when the heating unit 84 is in the second position. In addition, since the structure of the heating part 84 is the same as that of 1st Embodiment, description is abbreviate | omitted.

The blower 401 includes an air nozzle 401a, and can discharge air supplied from an air supply unit (not shown) from the air nozzle 401a. The form of the air nozzle 401a is not particularly limited, and may be, for example, a wide flat shape or a shape that discharges air radially.
And the air nozzle 401a is arrange | positioned toward the top part (part which contact | connects the web W (sheet | seat S)) of the 1st rotary body 181. FIG. In this embodiment, it arrange | positions to the upstream and downstream of the conveyance direction of the web W (sheet | seat S) of the 1st rotary body 181, and discharges air from the air nozzle 401a arrange | positioned at each.
When the drive unit of the blower 401 is connected to the control unit 104 and the heating unit 84 is located at the second position, the blower 401 is driven by receiving a drive signal from the control unit 104, and the air is discharged from the air nozzle 401a. Discharged.
Moreover, the pressure of the air discharged from the air nozzle 401a can be set as appropriate, and when the air is discharged toward the top of the first rotating body 181, the first rotating body 181 and the web W (sheet S) are separated from each other. It is desirable that the air pressure be of the order.

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

  When the heating unit 84 is in the second position, the first rotating body 181 receives wind from the blower 401, so that the cooling of the first rotating body 181 can be accelerated. Further, the web W (sheet S) can also be cooled.

  The present invention is not limited to the above-described embodiment, and various modifications and improvements can be added to the above-described embodiment. A modification will be described below. Modifications may be combined.

  (Modification 1) In the third embodiment, the blower 401 having the air nozzle 401a that discharges air to the first rotating body 181 is provided. However, the present invention is not limited to this configuration. For example, the structure provided with the fan which ventilates with respect to the 1st rotary body 181 may be sufficient. FIG. 16 is a schematic diagram illustrating a configuration of a sheet manufacturing apparatus according to the present modification. In detail, it is the schematic which shows the structure of the periphery of a heating part. As illustrated in FIG. 16, the sheet manufacturing apparatus 100 c includes a fan 402 that blows air to the first rotating body 181 that contacts the web W (sheet S) when the heating unit 84 is in the second position.

  The fan 402 includes an impeller 403, and is configured to generate airflow by rotating the impeller 403 and to blow air from the exhaust port 404. The fan 402 is disposed below the first rotating body 181 so that the exhaust port 404 faces the first rotating body 181. When the driving unit of the fan 402 is connected to the control unit 104 and the heating unit 84 is located at the second position, the fan 402 is driven by receiving a driving signal from the control unit 104 and blows air from the exhaust port 404. Is done. The air blown from the exhaust port 404 flows along the outer peripheral surface of the first rotating body 181 from the lower part of the first rotating body 181 toward the top of the first rotating body 181. In this way, when the heating unit 84 is in the second position, the entire first rotating body 181 receives wind from the fan 402, so that the cooling of the first rotating body 181 can be accelerated. Further, the web W (sheet S) can also be cooled.

  (Modification 2) In the first embodiment, the case where the first rotating body 181 and the second rotating body 182 have a roller shape has been described. However, at least one of the first rotating body 181 and the second rotating body 182 is used. It may be a belt shape. FIG. 17 is a schematic diagram illustrating a configuration of a sheet manufacturing apparatus according to the present modification. As shown in FIG. 17, the first rotating body 181a of the sheet manufacturing apparatus 100d has a belt stretched around a roller 189 and driven to rotate by the roller, and the second rotating body 182a has a heat source H therein. It has a heating roller. In the example shown in FIG. 17, the belt of the first rotating body 181a is heated by a heating body 183a that is a non-contact heater. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 3) In the first embodiment, a temperature detection unit that detects the surface temperatures of the first rotator 181 and the second rotator 182 is provided, and in the conveyance stop processing of the web W (sheet S), the first When the surface temperature of the rotator 181 and the second rotator 182 is equal to or lower than a predetermined temperature, the rotational drive of the first rotator 181 and the second rotator 182 is stopped, but the present invention is not limited to this configuration. For example, a timer is installed in the sheet manufacturing apparatus, the time from when the heating unit 84 is displaced to the second position is measured, and the first rotating body 181 and the second rotating body 182 are rotated based on the measured time data. The driving may be stopped. In this case, the timer may set in advance a time during which the surface temperatures of the first rotating body 181 and the second rotating body 182 are equal to or lower than a predetermined temperature. Even if it does in this way, the same effect as the above can be acquired.

  DESCRIPTION OF SYMBOLS 1 ... Hopper, 2 ... Pipe, 3 ... Pipe, 7 ... Pipe, 8 ... Pipe, 9 ... Hopper, 10 ... Feeding part, 12 ... Crushing part, 14 ... Crushing blade, 20 ... Defibration part, 22 ... Introduction 24, discharge port, 40 ... sorting unit, 41 ... drum unit, 42 ... introduction port, 43 ... housing unit, 44 ... discharge port, 45 ... first web forming unit, 46 ... mesh belt, 47 ... stretching roller , 47a ... tension roller, 48 ... suction part, 49 ... rotating body, 49a ... base part, 49b ... projection, 50 ... mixing part, 52 ... additive supply part, 54 ... pipe, 56 ... blower, 60 ... deposition part , 61 ... drum part, 62 ... introduction port, 63 ... housing part, 70 ... second web forming part, 72 ... mesh belt, 74 ... tension roller, 76 ... suction mechanism, 78 ... humidity control part, 80 ... sheet formation Part, 82 ... pressurizing part, 84 ... heating part, 85 ... calendar roller, 6 ... heating roller, 90 ... cutting section, 92 ... first cutting section, 94 ... second cutting section, 96 ... discharge section, 97 ... transport roller pair, 98 ... transport roller pair, 100, 100a, 100b, 100c, 100d DESCRIPTION OF SYMBOLS ... Sheet manufacturing apparatus, 102 ... Manufacturing part, 104 ... Control part, 130 ... Command part, 131 ... Input / output interface, 132 ... CPU, 133 ... ROM, 134 ... RAM, 140 ... Driver, 141 ... Motor drive part, 142, 143, 144, 145, 146 ... motor drive unit, 147, 148 ... heater drive unit, 181, 181a ... first rotating body, 182, 182a ... second rotating body, 183, 183a ... heating body, 184 ... cored bar, 185 ... Soft body, 187 ... Core, 188 ... Releasing layer, 189 ... Roller, 190 ... Displacement mechanism, 191 ... Rotating shaft, 192 ... Rotating shaft, 93 ... first bearing portion, 194 ... second bearing portion, 195a ... first rod, 195b ... second rod, 196 ... rotating shaft, 197a ... rotating shaft, 197b ... rotating shaft, 198 ... biasing member, 199 ... first The other end of the two-rod 195b, 200 ... transmission mechanism, 201 ... drive unit, 202 ... drive gear, 203 ... main gear, 204 ... first gear, 205 ... second gear, 206 ... third gear, 207 ... fourth Gear 301, first tension roller, 302 second tension roller, 303 third tension roller, 401 fan, 401a air nozzle, 402 fan, 403 impeller, 404 exhaust port.

Claims (8)

A sheet manufacturing apparatus for manufacturing a sheet using a raw material containing fibers,
A depositing portion for depositing a material containing fibers and resin;
A heating unit for heating the deposit deposited by the deposition unit, the heating unit including a first rotating body and a second rotating body;
A first position for the first rotating body and the second rotating body to sandwich and heat the deposit, and a second position where the first rotating body and the second rotating body are separated from each other. A displacement mechanism for displacing the heating unit;
A sheet manufacturing apparatus, comprising: a driving unit configured to rotate at least the rotating body in contact with the deposit in the second position. In the sheet manufacturing apparatus according to claim 1,
The sheet manufacturing apparatus, wherein the heating unit is located at the second position when conveyance of the deposit is stopped. In the sheet manufacturing apparatus according to claim 1 or 2,
The sheet manufacturing apparatus according to claim 1, wherein the rotation of the rotating body is stopped after the temperature of the rotating body in contact with the deposit becomes equal to or lower than a predetermined temperature. In the sheet manufacturing apparatus according to any one of claims 1 to 3,
The sheet manufacturing apparatus according to claim 1, wherein a rotational speed at the second position of the rotating body in contact with the deposit is higher than a rotational speed at the first position. In the sheet manufacturing apparatus according to any one of claims 1 to 4,
A pressurizing unit that pressurizes the deposit upstream of the heating unit in the transport direction of the deposit,
When the heating unit is in the second position, the pressurizing unit pressurizes the deposit. In the sheet manufacturing apparatus according to any one of claims 1 to 4,
A first transport unit that is located upstream of the heating unit in the transport direction of the deposit and can transport the deposit;
A second transport unit located downstream of the heating unit in the transport direction of the deposit and capable of transporting the deposit,
When the heating unit is in the second position, the deposit is reciprocated by the first transport unit and the second transport unit. In the sheet manufacturing apparatus according to any one of claims 1 to 6,
A sheet manufacturing apparatus comprising: a blower that blows air to a rotating body in contact with the deposit. A deposition unit for depositing a material including fiber and resin, and a heating unit for heating the deposit deposited by the deposition unit, the heating unit including a first rotating body and a second rotating body And a first position for the first rotating body and the second rotating body to sandwich and heat the deposit, and a second position where the first rotating body and the second rotating body are separated from each other In addition, a control method of a sheet manufacturing apparatus comprising: a displacement mechanism for displacing the heating unit; and a driving unit that rotates the first rotating body or the second rotating body,
A control method for a sheet manufacturing apparatus, comprising: rotating at least a rotating body in contact with the deposit when the heating unit is displaced to the second position.

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