TWI649176B - Sheet manufacturing device - Google Patents

Abstract

It is an object of the present invention to prevent leakage of unnecessary additives while preventing the sheet from being colored to an unexpected color. The present invention includes an additive storage box 110 (resin housing portion) that accommodates an additive containing a resin, and a resin supply unit that supplies the additive contained in the additive storage box 110 to a tube 54 that transports the defibrated material (transport) And a barrier 126 that blocks the supply of the additive to the tube 54 contained in the additive storage box 110.

Description

Sheet manufacturing device

The present invention relates to a sheet manufacturing apparatus.

Previously, a fibrous material was piled up, and a bonding force was applied to the stacked fibers to produce a sheet. In this case, in recent years, a technique of manufacturing a sheet using a method known as a dry method with little or no use of water to replace the previously widely used papermaking method using water has been used. In such a dry method, a gas stream is generated inside a tube by using a blower or the like, and an additive such as a resin is supplied in a state in which the fiber flows by the gas flow, and the fiber is bonded by an additive to produce a sheet. Technology (for example, refer to Patent Document 1). [Prior Art Document] [Patent Document] [Patent Document 1] Japanese Patent Laid-Open Publication No. 2015-092032

[Problems to be Solved by the Invention] However, in the above configuration, since the fibers are transported to the transport path by the airflow, a negative pressure is generated in the transport path. Therefore, there is a problem that the additive leaks from the supply port due to the negative pressure when the additive is not supplied. If the additive leaks, there is a problem that the sheet is colored to an unexpected color. In order to solve the above problems, it is an object of the present invention to prevent leakage of unnecessary additives. [Means for Solving the Problems] In order to achieve the above object, the sheet manufacturing apparatus of the present invention is a sheet in which a mixture of a defibrated material obtained by defibrating a raw material containing fibers and a resin is deposited, and a sheet is formed by pressurization and heating. And a resin supply unit that accommodates the resin; a resin supply unit that supplies the resin contained in the resin storage unit to a transport path that transports the defibrated material; and a shutter that blocks the resin The resin contained in the accommodating portion is supplied to the transport path. According to the present invention, since the supply of the resin contained in the resin accommodating portion to the transport path can be blocked by the shutter, a negative pressure is generated inside the transport path for transporting the defibrated material, and the resin is not leaked to the resin. The inside of the transport path. As a result, for example, the resin of the unused color is not accidentally supplied, and the sheet can be prevented from being colored to an unexpected color. Further, according to the invention of the present invention, the shutter is closed when the resin is not supplied from the resin accommodating portion. According to the present invention, since the shutter is closed when the resin is not supplied from the resin accommodating portion, unnecessary resin (resin which does not have to be supplied) is leaked into the inside of the transport path, for example, accidentally supplying the unused color can be prevented. Resin. Further, the present invention is the above invention, wherein the shutter is closed when the device is stopped. According to the present invention, since the shutter is closed when the apparatus is stopped, unnecessary resin (resin which is not supplied) is leaked to the inside of the conveyance path, for example, resin which is unexpectedly supplied with a color of no use can be prevented. According to still another aspect of the invention, the resin storage portion is configured by a plurality of resin storage portions that house a resin. According to the present invention, a plurality of resins of different colors or different types can be used because a plurality of resin housing portions respectively accommodate the resin. Further, when there is a resin that is not required to be supplied, the shutter of the resin accommodating portion in which the resin is accommodated is closed, and the resin is prevented from leaking into the inside of the transport path. For example, it is possible to prevent accidental supply of the unused color. Resin. Further, according to the invention, in the plurality of resin accommodating portions, at least the shutter corresponding to the resin accommodating portion for accommodating the colored resin is closed. According to the present invention, by closing the shutter corresponding to the resin accommodating portion for accommodating the colored resin, it is possible to prevent the unexpected color from being caused by the coloring resin of the sheet. Further, according to the invention of the present invention, there is provided a stirring mechanism for agitating the resin in the resin accommodating portion, and the driving source of the shutter is common to the stirring mechanism. According to the present invention, by making the driving source of the shutter common to the stirring mechanism, a new power source is not required, and the opening and closing operation of the shutter and the stirring operation of the stirring mechanism can be performed by one driving source.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a schematic front view showing a sheet manufacturing apparatus to which the present invention is applied. Fig. 2 is a schematic front view showing a state in which the front panel of Fig. 1 is removed. The sheet manufacturing apparatus 100 described in the present embodiment is suitable for producing a new paper by, for example, dissolving and fibrillating waste paper used as a raw material or the like, and then pressurizing, heating, and cutting the waste paper. Device. It is also possible to increase the bonding strength or whiteness of the paper product or to add functions such as color, fragrance, flame retardancy, etc., depending on the application, by mixing various additives in the fiberized raw material. Further, by controlling the density, thickness, and shape of the paper to form it, it is possible to manufacture paper of various thicknesses and sizes such as office paper or business card paper of A4 or A3 depending on the application. As shown in FIGS. 1 and 2, the sheet manufacturing apparatus 100 includes a frame 300 having a substantially rectangular parallelepiped shape. An opening and closing door 301 that opens and closes an opening provided on the upper portion of the front surface is provided on the upper center portion of the front surface of the casing 300. The opening and closing door 301 can be opened and closed using a handle. When the opening and closing door 301 is in the open state, the resin crucible accommodating portion 302 provided inside the casing 300 is exposed. In the resin crucible accommodating portion 302, a crucible 303 in which an additive containing a resin of a plurality of colors is stored is detachably housed. The opening and closing door 301 is made of a transparent material, and the user does not open the opening and closing door 301, and can visually check the state of the crucible 303 accommodated in the resin crucible accommodating portion 302. As shown in FIG. 1, on the front side of the frame 300, a touch panel 304 is disposed on the right side of the opening and closing door 301. The touch panel 304 also functions as a display unit for displaying various kinds of information related to the sheet manufacturing apparatus 100. As shown in FIG. 1 , an emergency stop button 305 is disposed above the touch panel 304 on the front side of the frame 300 . The emergency stop button 305 is a button for instructing the emergency stop of the process in the execution of the process of manufacturing the sheet by the sheet manufacturing apparatus 100. As shown in FIG. 1 , on the front side of the frame 300 , a push-type power switch 306 is disposed below the touch panel 304 . As shown in FIG. 1, a front cover 307 is provided below the opening and closing door 301 on the front surface of the casing 300. The front cover 307 can be opened and closed, for example, using a handle. When the front cover 307 is in the open state, the internal storage tank 308, the compressor 309, and the dust collecting tank 310 provided inside the casing 300 are exposed. The front cover 307 can be set to an open state only when the lock state of the lock mechanism (not shown) is released. As shown in FIG. 1, a paper feed stacker 311 is provided in a state of being protruded from the front side at a lower portion of the front surface of the casing 300. The paper feed stacker 311 is a device that accommodates waste paper as a raw material. When the sheet is produced based on the waste paper, the waste paper stored in the paper feed stacker 311 is supplied to the inside of the casing 300 by a specific mechanism. Above the paper feed stacker, waste paper for manually loading waste paper or a plurality of sheets is supplied to the paper feed tray 312 inside the frame piece by piece. As shown in FIG. 1, at the left end portion of the front surface of the casing 300, a space is formed by recessing the frame 300 toward the rear, and a paper discharge tray 313 is provided in the space. The paper discharge tray 313 is a device for sequentially discharging and storing sheets manufactured by the sheet manufacturing apparatus 100. The paper discharge tray 313 can selectively mount the paper discharge stacker. Fig. 3 is a schematic view showing the configuration and operation of a sheet manufacturing apparatus according to an embodiment. As shown in FIG. 3, the sheet manufacturing apparatus 100 includes a supply unit 10, a coarse crushing unit 12, a defibrating unit 20, a sorting unit 40, a first mesh forming unit 45, a rotating body 49, a mixing unit 50, and a stacking unit. 60. The second mesh forming portion 70, the conveying portion 79, the sheet forming portion 80, and the cutting portion 90. Further, the sheet manufacturing apparatus 100 includes humidifying units 202, 204, 206, 208, 210, and 212 for the purpose of humidifying the raw material and/or humidifying the space in which the raw material moves. The specific configuration of the humidifying units 202, 204, 206, 208, 210, and 212 is arbitrary, and examples thereof include a steam type, a vaporization type, a warm air vaporization type, and an ultrasonic type. In the present embodiment, the humidifying units 202, 204, 206, and 208 are configured by a gasification type or a warm air-vaporizing type humidifier. In other words, the humidifying units 202, 204, 206, and 208 have a filter (not shown) in which water is infiltrated, and the humidified air having increased humidity is supplied by passing air through the filter. Further, in the present embodiment, the humidifying unit 210 and the humidifying unit 212 are configured by an ultrasonic humidifier. In other words, the humidifying units 210 and 212 have a vibrating portion (not shown) that atomizes water, and supplies the mist generated by the vibrating portion. The supply unit 10 supplies the raw material to the coarse crushing portion 12. The raw material for producing the sheet of the sheet manufacturing apparatus 100 may be any one containing fibers, and examples thereof include paper, pulp, pulp sheets, cloths containing nonwoven fabrics, and woven fabrics. In the present embodiment, the sheet manufacturing apparatus 100 is configured by using waste paper as a raw material. In the present embodiment, the supply unit 10 includes a paper feed stacker 311 that stacks waste paper and accumulates, and the waste paper is fed from the paper feed stacker 311 by the operation of a paper feed motor (not shown). To the coarse portion 12. The coarse crushing portion 12 cuts (coarsely) the raw material supplied from the supply portion 10 by the coarse crushing blade 14 to form a coarse chip. The coarse crushing blade 14 cuts the raw material in a gas atmosphere such as the atmosphere (in the air). The coarse crushing portion 12 may have a configuration similar to that of a so-called shredder, and includes a driving portion that cuts one of the pair of rough cutting edges 14 and rotates the coarse cutting edge 14 with the raw material interposed therebetween. The shape or size of the coarse chips is arbitrary as long as it is suitable for the defibration treatment in the defibrating unit 20. For example, the coarse crushing portion 12 cuts the raw material into pieces of a size of one to several centimeters or less. The coarse crushing portion 12 has a chute (hopper) 16 that receives the coarse debris cut by the coarse crushing blade 14 and dropped. The chute 16 has a tapered shape in which the width gradually narrows in a direction in which the coarse debris flows (traveling direction). Therefore, the chute 16 can receive more coarse debris. The tube 16 is connected to the tube 2 that communicates with the defibrating unit 20, and the tube 2 forms a conveying path for conveying the raw material (coarse chips) cut by the coarse cutting blade 14 to the defibrating unit 20. The coarse chips are collected by the chute 16 and transferred (transferred) through the tube 2 to the defibrating unit 20. The humidifying air is supplied to the chute portion 16 or the chute 16 in the vicinity of the chute portion 12 by the humidifying portion 202. Thereby, it is possible to suppress the phenomenon that the coarse debris cut by the coarse crushing blade 14 is adsorbed to the inner surface of the chute 16 or the tube 2 due to static electricity. Further, since the coarse crushed material cut by the coarse crushing blade 14 is transferred to the defibrating unit 20 together with the humidified (high humidity) air, the effect of suppressing the attachment of the defibrated material to the inside of the defibrating unit 20 can be expected. Further, the humidifying unit 202 may be configured to supply humidified air to the coarse crushing blade 14 and to remove static electricity from the raw material supplied from the supply unit 10. Further, the ionizer can be used together with the humidifying unit 202 to remove static electricity. The defibrating unit 20 defibrates the raw material (coarse chips) cut by the coarse crushing portion 12, and generates a defibrated material. Here, "defibration" means that a raw material (defibrated material) obtained by bonding a plurality of fibers is unwound one by one. The defibrating unit 20 also has a function of separating the resin particles or ink adhering to the raw material, the toner, the anti-seepage agent, and the like from the fibers. The person who passes through the defibrating unit 20 is referred to as "defibrillation material". In addition to the unzipped fiber, the "defibrillation" also includes a resin that separates the fiber from the fiber when it is opened (a resin that bonds the plurality of fibers to each other), or a toner such as an ink or a toner. Or the case of additives such as anti-seepage agents and paper strength enhancers. The shape of the untwisted defibrated material is a string or a ribbon. The unraveled defibrated material may not exist in a state of being entangled with other untwisted fibers (independent state), or may be entangled with other unwrapped defibrated materials and become a block-like state (forming a so-called "clump" The state of existence exists. The defibrating unit 20 defibrates in a dry manner. Here, a method of performing defibration or the like in a gas atmosphere such as the atmosphere (in the air), not a liquid, is referred to as a dry type. In the present embodiment, the defibrating unit 20 is configured to use an impeller pulverizer. Specifically, the defibrating unit 20 includes a rotor (not shown) that rotates at a high speed, and a lining (not shown) located on the outer circumference of the roller. The coarse chips which are coarsely crushed by the coarse crushing portion 12 are interposed between the rotor of the defibrating portion 20 and the lining to be defibrated. The defibrating unit 20 generates an air flow by the rotation of the rotor. By the gas flow, the defibrating unit 20 can suck the raw material, that is, the coarse chips from the tube 2, and transport the defibrated material toward the discharge port 24. The defibrated material is sent from the discharge port 24 to the tube 3, and is transferred to the sorting unit 40 via the tube 3. In this way, the defibrated material generated by the defibrating unit 20 is transported from the defibrating unit 20 to the sorting unit 40 by the air flow generated by the defibrating unit 20. In the present embodiment, the sheet manufacturing apparatus 100 includes the defibrating unit blower 26, which is an airflow generating device, and conveys the defibrated material to the sorting unit 40 by the airflow generated by the defibrating unit blower 26. As shown in FIG. 2, the defibrating unit blower 26 is attached to the tube 3, and the air is sucked together with the defibrated material from the defibrating unit 20, and is sent to the sorting unit 40. The sorting unit 40 has an introduction port 42 through which the defibrated material defibrated by the defibrating unit 20 flows into the tube 3 together with the air current. The sorting unit 40 sorts the defibrated materials introduced into the introduction port 42 in accordance with the length of the fibers. Specifically, the sorting unit 40 is a fibrillated material defibrated by the defibrating unit 20, and the defibrated material having a predetermined size or smaller is used as the first sorting material, and is larger than the first sorting material. The defibrated material is sorted as the second sorting. The first sorting material contains fibers, particles, and the like, and the second sorting material includes, for example, larger fibers, undecomposed sheets (coarse fragments that are not sufficiently defibrated), defibrated fibers agglomerated, or entangled agglomerates, and the like. . In the present embodiment, the sorting unit 40 has a drum portion (screen portion) 41 and a casing portion (cover portion) 43 that houses the drum portion 41. The drum portion 41 is a cylindrical sieve that is rotationally driven by a motor. The drum portion 41 has a mesh (filter member, mesh screen) and functions as a sieve (screen). With this mesh, the drum portion 41 sorts the first sorting which is smaller in size than the opening (opening) of the mesh, and the second sorting which is larger than the opening of the mesh. As the net of the drum portion 41, for example, a metal mesh, an expanded metal plate in which a metal plate with a slit is stretched, and a punched metal plate in which a press machine is equal to a metal plate to form a hole is used. The defibrated material introduced into the introduction port 42 is sent into the inside of the drum portion 41 together with the air current, and the first sorting object is dropped from the mesh of the drum portion 41 to the lower side by the rotation of the drum portion 41. The second sorting which cannot pass through the mesh of the drum portion 41 flows through the airflow flowing from the introduction port 42 into the drum portion 41, is guided to the discharge port 44, and is sent to the tube 8. The tube 8 is connected to the inside of the drum portion 41 and the tube 2. The second sorting system flowing through the tube 8 flows along with the coarse chips shredded by the coarse crushing portion 12 to the tube 2, and is guided to the introduction port 22 of the defibrating portion 20. Thereby, the second sorting material returns to the defibrating unit 20, and is defibrated. Further, the first sorting material sorted by the drum portion 41 is dispersed into the air by the mesh of the drum portion 41, and faces the net of the first web forming portion 45 located below the drum portion 41. The belt 46 is lowered. The first mesh forming portion 45 (separating portion) includes a mesh belt 46 (separating belt), a tension roller 47, and a suction portion (suction mechanism) 48. The mesh belt 46 is an endless belt which is suspended by three tension rollers 47 and is conveyed in the direction indicated by the arrow in the figure by the action of the tension roller 47. The surface of the mesh belt 46 is constructed by arranging a mesh of a certain size opening. In the first sorting in which the sorting unit 40 is lowered, the fine particles passing through the size of the mesh are dropped below the mesh belt 46, and the fibers which are not sized by the mesh are accumulated on the mesh belt 46, and are along with the mesh belt 46 along the arrow. The direction is carried. The fine particles dropped from the mesh belt 46 include relatively small or low density (resin particles or toners or additives, etc.) in the defibration, and are not used in the sheet manufacturing apparatus 100 to produce the removed material of the sheet S. The mesh belt 46 is moved at a specific speed V1 in the normal operation of manufacturing the sheet S. Here, in the normal operation, the operation of the sheet manufacturing apparatus 100 to be described later and the execution of the stop control are excluded, and more specifically, the sheet manufacturing apparatus 100 manufactures the sheet S of a desired quality. period. Therefore, the defibrated material defibrated by the defibrating unit 20 is sorted by the sorting unit 40 into the first sorting and the second sorting, and the second sorting is returned to the defibrating unit 20. Further, the removed matter is removed from the first sorting material by the first mesh forming portion 45. The remainder after the removal of the removed material from the first sorting is a material suitable for the manufacture of the sheet S, which is deposited on the webbing 46 to form the first web W1. The suction portion 48 attracts air from below the mesh belt 46. The suction unit 48 is connected to the dust collecting unit 27 via the tube 23 . The dust collecting unit 27 is a filter type or a cyclone type dust collecting device, and separates the fine particles from the air flow. A collecting blower 28 (separation suction portion) is provided downstream of the dust collecting portion 27, and the collecting blower 28 sucks air from the dust collecting portion 27. Further, the air discharged from the collection blower 28 is discharged to the outside of the sheet manufacturing apparatus 100 by the tube 29. In this configuration, the air is sucked from the suction portion 48 by the dust collecting portion 27 by collecting the blower 28. In the suction portion 48, the fine particles passing through the mesh of the mesh belt 46 are attracted together with the air, and are transported to the dust collecting portion 27 through the tube 23. The dust collecting portion 27 separates and accumulates the fine particles passing through the mesh belt 46 from the air current. Therefore, the fibers of the removed material are removed from the first sorting material on the mesh belt 46 to form the first web W1. The suction by the trap blower 28 promotes the formation of the first web W1 on the mesh belt 46 and quickly removes the removed matter. The humidifying air is supplied to the space including the drum portion 41 by the humidifying unit 204. The first sorting material is humidified inside the sorting unit 40 by the humidified air. Thereby, the adhesion of the first sorting material to the mesh belt 46 due to the electrostatic force can be weakened, and the first sorting material can be easily peeled off from the web belt 46. Further, it is possible to suppress adhesion of the first sorting material to the inner wall of the rotating body 49 or the casing portion 43 due to the electrostatic force. Moreover, the removed portion can be efficiently sucked by the suction portion 48. Further, in the sheet manufacturing apparatus 100, the configuration of sorting and separating the first defibrated material and the second defibrated material is not limited to the sorting unit 40 including the drum portion 41. For example, a configuration in which the defibrated material subjected to defibration treatment by the defibrating unit 20 is classified by a classifier may be employed. As the classifier, for example, a cyclone classifier, an elbow jet classifier, and an Eddie classifier can be used. If such a classifier is used, the first and second sorts can be sorted and separated. Further, by the classifier described above, it is possible to realize a configuration in which a relatively small or low-density material (resin particles, toners, additives, and the like) containing a defibration is separated and removed. For example, a configuration in which the fine particles contained in the first sorting material are removed from the first sorting by a classifier may be employed. In this case, the second sorting means may be returned to the defibrating unit 20, for example, and the removed matter may be collected by the dust collecting unit 27, and the first sorted matter after the removed matter is removed and sent to the tube 54. In the transport path of the mesh belt 46, on the downstream side of the sorting unit 40, air containing mist is supplied by the humidifying unit 210. The mist, which is a fine particle of water generated by the humidifying unit 210, descends toward the first mesh W1, and supplies moisture to the first mesh W1. Thereby, the amount of moisture contained in the first web W1 can be adjusted, and adsorption of the 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 W1 deposited on the mesh belt 46. The first web W1 is peeled off from the web 46 at a position where the web 46 is folded back by the tension roller 47, and is separated by the rotating body 49. The first mesh W1 is a soft material in which the fibers are stacked in a net shape, and the rotating body 49 is used to disassemble the fibers of the first mesh W1, and is processed into a state in which the mixing portion 50 which will be described later is mixed with the resin. The configuration of the rotating body 49 is arbitrary, but in the present embodiment, a rotating blade shape having a plate-like blade and rotating may be employed. The rotating body 49 is disposed at a position where the first mesh W1 peeled off from the mesh belt 46 is in contact with the blade. By the rotation of the rotating body 49 (for example, the rotation in the direction indicated by the arrow R in the drawing), the blade is separated from the mesh belt 46 and the first mesh W1 conveyed is collided and divided, and the subdivided body P is produced. Further, the rotating body 49 is preferably disposed 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 front end of the blade of the rotating body 49 and the mesh belt 46 can be set to 0. 05 mm or more 0. 5 mm or less, at this time, the first mesh W1 can be efficiently separated by the rotating body 49 without causing damage to the mesh belt 46. The subdivided body P, which is separated by the rotating body 49, descends inside the tube 7, and is transferred (transferred) to the mixing unit 50 by the flow of air flowing inside the tube 7. Further, the humidifying air is supplied to the space including the rotating body 49 by the humidifying unit 206. Thereby, it is possible to suppress the phenomenon that the fibers are adsorbed to the inside of the tube 7 or the blades of the rotating body 49 due to static electricity. Moreover, since the air having a high humidity is supplied to the mixing unit 50 through the tube 7, the influence of static electricity can 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 flows a gas stream including the subdivided body P, and a mixing blower 56 (transfer blower). The subdivided body P removes the fibers of the removed material from the first sorting by the sorting unit 40 as described above. The mixing unit 50 is a mixture of the fibers constituting the subdivided body P and containing the resin. In the mixing unit 50, an air flow is generated by the mixing blower 56, and the tube 54 is conveyed while mixing the subdivided body P and the additive. Further, the subdivided body P is disassembled in the process of flowing inside the tube 7 and the tube 54, and becomes a finer fibrous shape. The additive supply unit 52 (resin supply unit) includes an additive storage box 110 that accommodates an additive containing a resin. The crucible 303 in which the additive is stored is connected to the additive storage box 110, and the tube 54 is supplied with the additive that is transported from the crucible 303 to the additive storage box 110. As the additive supply unit 52, for example, a screw conveyor 120 that conveys an additive containing fine powder or fine particles inside the additive storage box 110 is used. Further, the additive supply unit 52 includes a supply unit 113. The supply unit 113 includes a shutter 126 that can be opened and closed. When the supply unit 113 is closed, for example, the pipe or opening connecting the supply unit 113 and the pipe 54 is closed. In this configuration, the supply of the additive from the additive supply unit 52 to the tube 54 is cut off in a state where the supply unit 113 is closed. In the state in which the screw conveyor 120 of the additive supply unit 52 is not in operation, the additive is not supplied from the additive supply unit 52, but when the negative pressure is generated in the tube 54, the additive supply unit is provided. 52 stops and there is also the possibility that the additive will flow to the tube 54. The flow of such an additive does not occur in a state where the supply portion 113 is closed. Therefore, the flow of the additive can be surely blocked by closing the supply portion 113 with the shutter 126. In the additive supply unit 52, the supply unit 113 (the shutter 126) can be opened and closed by the motor or the actuator, for example, and the stirring blade 124 incorporated in the additive supply unit 52 can be used. drive. The additive supplied from the additive supply unit 52 includes a resin for bonding a plurality of fibers. It is a thermoplastic resin or a thermosetting resin such as AS resin, ABS resin, polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylic resin, polyester resin, polyethylene terephthalate, polyphenylene. Ether, polybutylene terephthalate, nylon, polyamine, polycarbonate, polyacetal, polyphenylene sulfide, polyetheretherketone, and the like. These resins may be used singly or in combination as appropriate. That is, the additive may comprise a single substance, may be a mixture, or may comprise a plurality of particles each composed of a single or plural substances. Further, the additive may be fibrous or powdery. The resin contained in the additive is melted by heating and a plurality of fibers are bonded to each other. Therefore, in a state where the resin and the fiber are mixed, the fibers are not bonded to each other without being heated to a temperature at which the resin is melted. Further, the additive supplied from the additive supply unit 52 may contain, in addition to the resin that bonds the fibers, a coloring agent for coloring the fibers or a method for suppressing fiber aggregation or resin aggregation depending on the type of the sheet to be produced. A coagulation inhibitor, a flame retardant for making fibers and the like less flammable. Further, the additive containing no coloring agent may be a pale color which is colorless or can be regarded as a colorless color, and may be white. The airflow generated by the mixing blower 56, the subdivided body P descending from the pipe 7, and the additive supplied from the additive supply unit 52 are sucked into the inside of the pipe 54, and passed through the inside of the air blower 56. The fibers constituting the subdivided body P are mixed with the additive by the air flow generated by the mixing blower 56 and/or the rotating portion of the blade or the like of the mixing blower 56, and the mixture (the first sorting and the additive) The mixture) is transferred to the stacking portion 60 through the tube 54. Further, the mechanism for mixing the first sorting material and the additive is not particularly limited, and may be stirred by a blade that rotates at a high speed, or may be a rotating person of a container such as a V-type mixer, or may be used. The mechanism is placed before or after the mixing blower 56. The stacking portion 60 is introduced into the mixture passing through the mixing portion 50 from the introduction port 62, and the entangled defibrated material (fiber) is disassembled, and one side is lowered while being dispersed in the air. In addition, when the resin of the additive supplied from the additive supply unit 52 is a fiber, the entangled resin is disassembled. Thereby, the deposition portion 60 can uniformly deposit the mixture in the second mesh formation portion 70. The stacking portion 60 has a drum portion 61 (drum) and a casing portion (cover portion) 63 that houses the drum portion 61. The drum portion 61 is a cylindrical sieve that is rotationally driven by a motor. The drum portion 61 has a mesh (filter member, mesh screen) and functions as a sieve (screen). With this mesh, the drum portion 61 passes the fibers or particles smaller than the mesh opening (opening), and descends from the rotating drum portion 61. The configuration of the drum portion 61 is the same as the configuration of the drum portion 41, for example. Further, the "screen" of the drum portion 61 may not have the function of sorting a specific object. That is, the "screen" used as the drum portion 61 means that the net is provided, and the drum portion 61 can also lower the total amount of the mixture introduced into the drum portion 61. The second mesh forming portion 70 is disposed below the drum portion 61. The second mesh forming portion 70 (mesh forming portion) deposits the passing material passing through the stacking portion 60 and forms a second mesh W2 (stack). The second mesh forming portion 70 has, for example, a mesh belt 72 (tape), a tension roller 74, and a suction mechanism 76. The mesh belt 72 is an endless belt which is suspended by a plurality of tension rollers 74 and is conveyed in the direction indicated by the arrow in the figure by the action of the tension roller 74. The mesh belt 72 is, for example, made of metal, resin, cloth, or non-woven fabric. The surface of the mesh belt 72 is constructed by arranging nets of a certain size opening. In the fibers or particles descending from the drum portion 61, the particles passing through the size of the mesh are dropped below the mesh belt 72, and the fibers which are not sized by the mesh are accumulated on the mesh belt 72, and are along with the mesh belt 72 in the direction of the arrow. Transfer. The mesh belt 72 is moved at a specific speed V2 during the normal operation of manufacturing the sheet S. The so-called normal operation is as described above. The mesh of the mesh belt 72 is relatively fine, and can be set to a size that does not pass the fibers or particles which are mostly lowered by the rotating drum portion 61. The suction mechanism 76 is disposed below the mesh belt 72 (opposite side of the stacking portion 60 side). The suction mechanism 76 is provided with a suction blower (not shown), and the suction mechanism 76 generates a downwardly directed airflow (airflow from the stacking portion 60 toward the mesh belt 72) by suction of the suction blower. The mixture dispersed in the air by the stacking portion 60 is attracted to the mesh belt 72 by the suction mechanism 76. Thereby, the formation of the second web W2 on the mesh belt 72 can be promoted, and the discharge speed from the stacking portion 60 can be increased. Further, by the suction mechanism 76, a downflow can be formed in the drop path of the mixture, and the defibration or the additive can be prevented from being entangled in the drop. The suction blower (stacking suction portion) may also discharge the air sucked from the suction mechanism 76 through the collecting filter (not shown) to the outside of the sheet manufacturing apparatus 100. Alternatively, the air sucked by the suction blower may be sent to the dust collecting portion 27, and the removed matter contained in the air sucked by the suction mechanism 76 may be collected. The humidifying air is supplied to the space including the drum portion 61 by the humidifying unit 208. By the humidified air, the inside of the stacking portion 60 can be humidified, and the adhesion of the fibers or particles to the casing portion 63 due to the electrostatic force can be suppressed, so that the fibers or particles can be quickly lowered to the mesh belt 72, which can be preferably formed. The second mesh W2 of the shape. As described above, the second mesh W2 including a large amount of air and in a softly bulged state is formed by passing through the stacking portion 60 and the second mesh forming portion 70 (the mesh forming step). The second web W2 deposited on the mesh belt 72 is conveyed toward the sheet forming portion 80. In the transport path of the mesh belt 72, air containing mist is supplied to the downstream side of the stacking portion 60 by the humidifying portion 212. Thereby, the mist generated by the humidifying unit 212 is supplied to the second mesh W2, and the moisture content of the second mesh W2 is adjusted. Thereby, adsorption of the fiber to the mesh belt 72 due to static electricity and the like can be suppressed. The sheet manufacturing apparatus 100 is provided with a conveying unit 79 that conveys the second web W2 on the mesh belt 72 to the sheet forming unit 80. The conveying unit 79 has, for example, a mesh belt 79a, a tension roller 79b, and a suction mechanism 79c. The suction mechanism 79c is provided with a blower (not shown), and an upward airflow is generated in the mesh belt 79a by the suction force of the blower. This airflow attracts the second mesh W2, and the second mesh W2 is separated from the mesh belt 72 and adsorbed to the mesh belt 79a. The mesh belt 79a is moved by the rotation of the tension roller 79b, and the second web W2 is conveyed to the sheet forming portion 80. The moving speed of the mesh belt 72 is, for example, the same as the moving speed of the mesh belt 79a. In this manner, the transport unit 79 peels off and transports the second mesh W2 formed on the mesh belt 72 from the mesh belt 72. The sheet forming unit 80 presses and heats the second web W2 deposited on the mesh belt 72 and conveyed by the conveying unit 79 to form the sheet S. In the sheet forming portion 80, the fibers of the defibrated material contained in the second web W2 and the additive are heated, whereby a plurality of fibers in the mixture are bonded to each other via an additive (resin). The sheet forming unit 80 includes a pressurizing unit 82 that pressurizes the second web W2, and a heating unit 84 that heats the second web W2 pressurized by the pressurizing unit 82. The pressurizing portion 82 is constituted by a pair of press rolls 85, and is pressurized by sandwiching the second web W2 with a specific nip pressure. The second web W2 is reduced in thickness by pressurization, and the density of the second web W2 is increased. One of the pair of pressure rollers 85 is a drive roller driven by a motor (not shown), and the other is a driven roller. The pressure roller 85 is rotated by a driving force of a motor (not shown), and the second mesh W2 which is high in density by pressurization is transported to the heating unit 84. The heating unit 84 can be configured, for example, by using a heat roller, a hot press forming machine, a heating plate, a warm air blower, an infrared heater, and a pilot damper. In the present embodiment, the heating unit 84 includes a pair of heating rolls 86. The heating roller 86 is heated to a preset temperature by a heater provided inside or outside. The heating roller 86 sandwiches the second web W2 pressed by the pressure roller 85 and applies heat to form a sheet S. Further, one of the pair of heating rollers 86 is a driving roller driven by a motor (not shown), and the other is a driven roller. The heating roller 86 is rotated by a driving force of a motor (not shown), and the heated sheet S is conveyed toward the cutting unit 90. The number of the pressure rollers 85 included in the pressurizing portion 82 and the number of the heat rollers 86 included in the heating portion 84 are not particularly limited. The cutting portion 90 (cut portion) cuts the sheet S formed by the sheet forming portion 80. In the present embodiment, the cutting unit 90 includes a first cutting unit 92 that cuts the sheet S in a direction intersecting the conveying direction of the sheet S, and a second cutting unit 94 that follows the conveying direction. The sheet S is cut in parallel. The second cutting unit 94 cuts the sheet S that has passed through the first cutting unit 92, for example. By the above, a single-sized sheet S of a specific size is formed. The cut single sheet S is discharged toward the discharge portion 96. The discharge unit 96 is provided with a paper discharge tray 313 or a stacker on which the sheet S of a specific size is placed. In the above configuration, the humidifying units 202, 204, 206, and 208 may be configured by one vaporizing humidifier. In this case, the humidified air generated by one humidifier may be branched and supplied to the coarse crushing portion 12, the casing portion 43, the pipe 7, and the casing portion 63. This configuration can be easily realized by providing a pipe (not shown) for supplying humidified air to the branch. Further, of course, the humidifying sections 202, 204, 206, and 208 may be configured by two or three vaporized humidifiers. In the present embodiment, humidified air is supplied to the humidifying units 202, 204, 206, and 208 from a vaporization type humidifier (not shown) as follows. Further, in the above configuration, the humidifying units 210 and 212 may be configured by one ultrasonic humidifier, or may be configured by two ultrasonic humidifiers. For example, a configuration in which the air containing mist generated by one humidifier is branched and supplied to the humidifying unit 210 and the humidifying unit 212 can be employed. In the present embodiment, the mist-containing humidifier (not shown) supplies the mist-containing air to the humidifying units 210 and 212. Further, the blower provided in the above-described sheet manufacturing apparatus 100 is not limited to the defibrating unit blower 26, the collecting blower 28, the mixing blower 56, the blower of the suction mechanism 76, and the blower of the suction mechanism 79c. For example, it is of course also possible to provide a blower for each of the above-mentioned blowers in the duct. Further, in the above configuration, the raw material is first coarsely crushed from the coarse crushing portion 12, and the sheet S is produced from the coarsely crushed raw material. However, for example, the fiber S may be used as a raw material to produce the sheet S. For example, a fiber equivalent to the defibrated material after the defibration treatment of the defibrating unit 20 can be put into the drum portion 41 as a raw material. Further, it is possible to use a fiber equivalent to the first fraction separated from the defibrated material as the raw material input pipe 54. In such a case, the sheet S can be produced by supplying the fiber obtained by processing waste paper or pulp or the like to the sheet manufacturing apparatus 100. Next, the additive supply unit 52 will be described in detail. Fig. 4 is a perspective view of an additive supply unit. Fig. 5 is a perspective view showing a drive mechanism of the additive supply unit. Fig. 6 is a cross-sectional view of the additive supply unit. The additive supply unit includes an additive storage box 110 as a resin storage unit that accommodates an additive containing a resin. The additive storage box 110 is formed in a box shape in which the inside is hollow, and a cylindrical transfer portion 111 extending laterally is provided below one surface of the additive storage box 110. An opening 112 is formed in the lower surface of the end portion of the conveying portion 111. A cylindrical supply portion 113 connected to the tube 54 is provided at an end portion of the conveying portion 111, and an opening 114 that communicates with the opening 54 of the tube 54 and the conveying portion 111 is formed below the supply portion 113. The additive storage box 110 is provided in plurality (six in the present embodiment), and the plurality of additive storage boxes 110 are arranged along the tube 54. A plurality of additive storage boxes 110 are respectively distinguished by the color of the additive. As the color of the additive, for example, in addition to achromatic or color such as white, it also contains a transparent color. Additives having different colors may be accommodated in each of the additive storage boxes 110, and additives of the same color may be accommodated in the plurality of additive storage boxes 110. To the upper portion of each of the additive storage boxes 110, a crucible 303 for storing an additive corresponding to the color of the contained additive is detachably attached. The crucible 303 can be individually replaced when the additive is exhausted, and the additive stored in the crucible 303 is appropriately supplied to the additive storage box 110 by gravity. The screw conveyor 120 is rotatably disposed below the additive storage box 110. One end of the screw conveyor 120 extends to the front end portion of the conveying portion 111, and the other end of the screw conveyor 120 passes through the opposite side surface on the side where the conveying portion 111 of the additive storage box 110 is formed, and is exposed to the outside. The spiral gear 121 is attached to the end portion of the screw conveyor 120 that is exposed to the outside from the additive storage box 110. A spiral thread 122 is formed on the outer circumferential surface of the screw conveyor 120, and the screw conveyor 120 is rotationally driven to pass the inside of the additive storage box 110 through the inside of the conveying unit 111 toward the supply unit. 113 transfer. Inside the additive storage box 110, the stirring shaft 123 penetrates the side surface of the additive storage box 110 and is rotatably supported. The stirring shaft 123 is disposed in parallel with the screw conveyor 120, and the stirring blade 124 is attached to the outer circumference of the stirring shaft 123. A stirring gear 125 is attached to the outer end portion of the additive storage box 110 of the stirring shaft 123. Further, the stirring blade 124 is rotationally driven via the stirring shaft 123 to agitate the additive contained in the inside of the additive storage box 110. On the outer circumference of the conveying unit 111, the cylindrical shutter 126 is rotatably disposed along the outer circumference of the conveying unit 111. The shutter 126 covers the outer peripheral surface of the conveying portion 111, and an opening 127 is formed in the front end portion. When the shutter 126 is rotated, the opening 127 of the shutter 126 is aligned (connected) with the opening 112 of the conveying portion 111, and an additive is supplied to the inside of the tube 54. This state is referred to as the open state of the shutter 126. Further, when the shutter 126 closes the opening 112 of the conveying portion 111 by a portion other than the opening 127, the supply of the additive to the tube 54 is stopped. This state is referred to as the closed state of the shutter 126. On the outer circumference of the shutter 126, a notch 128 is formed in the circumferential direction, and the notch 128 is formed across the substantially half circumference of the shutter 126. A shutter gear 129 is attached to the base end of the shutter 126. Next, the drive mechanism of the additive supply unit will be described in detail. As shown in FIGS. 5 and 6, the drive mechanism includes a drive motor 130 that is attached to the outside of the additive storage box 110. The drive motor 130 is fixed to the support plate 131 attached to the side surface on which the transfer portion 111 of the additive storage case 110 is formed by screws or the like. The support plate 131 has a second support plate 132 attached to the support plate 131 with a predetermined gap, and a third support plate 133 is attached to the second support plate 132 with a predetermined gap below the second support plate 132. The drive motor 130 is mounted with an output gear 134 on the opposite side of the support plate 131, and the drive gear 135 is engaged with the output gear 134. The drive gear 135 is rotatably supported by the second support plate 132. The drive gear 135 is mounted with a stirring drive gear 136 between the support plate 131 and the second support plate 132, and is mounted coaxially with the drive gear 135. And rotates integrally. In the second support plate 132 and the third support plate 133, the transmission shaft 137 is rotatably supported. A shutter transmission gear 138 is attached between the second support plate 132 and the third support plate 133 of the transmission shaft 137, and the transmission transmission gear 138 is engaged with the drive gear 135. Further, on the outer side of the third support plate 133 of the transmission shaft 137, a brake drive gear 139 is attached, and the brake drive gear 139 is engaged with the shutter gear 129 of the shutter 126. The torque limiter 140 is attached to the shutter drive gear 139, and is configured to release the driving force toward the shutter drive gear 139 when a specific torque is applied to the brake drive gear 139. A positioning protrusion 141 that is engaged with the notch 128 is attached to the torque limiter 140. In other words, by driving the drive motor 130 and driving the drive gear 135 via the output gear 134, the shutter transmission gear 138 and the brake drive gear 139 are rotationally driven. The shutter 126 is rotated via the shutter gear 129 by the rotation of the shutter drive gear 139. If the opening 127 of the shutter 126 (for example, the center position of the opening 127) is rotated to coincide with the opening 112 of the conveying portion 111 (for example, the center position of the opening 112), the positioning projection 141 abuts against one end of the notch 128. The rotation of the shutter 126 is blocked. As a result, the shutter drive gear 139 is not biased by the shutter gear 129, so that the shutter drive gear 139 stops rotating, and the brake restrictor 140 releases the shutter transmission gear 138. Driving force. When the drive motor 130 is driven to rotate in the reverse direction, the shutter gear 129 is also rotationally driven in the reverse direction via the output gear 134, the drive gear 135, the brake transmission gear 138, and the brake drive gear 139. Thereby, the shutter 126 is also rotated in the reverse direction, and the opening 112 of the conveying portion 111 is closed by a portion other than the opening 127 of the shutter 126. When the shutter 126 is rotated about halfway from the open state and the shutter 126 is closed to close the opening 112 of the conveying portion 111, the positioning projection 141 abuts against the other end portion of the cutout 128 to prevent the rotation of the shutter 126. As a result, the shutter drive gear 139 is not biased by the shutter gear 129, so that the shutter drive gear 139 stops rotating, and the brake restrictor 140 releases the shutter transmission gear 138. Driving force. A screw drive motor (not shown) is disposed on the outer side of the additive storage case (the right side in Fig. 6). The spiral gear 121 meshes with an output gear (not shown) of the screw drive motor. Further, by driving the screw drive motor, the spiral gear 121 is rotated via the output gear, and thereby the screw conveyor 120 is rotated. By the rotation of the screw conveyor 120, the additive in the additive storage box 110 is conveyed toward the front end of the conveying unit 111, and passes through the opening 112 of the conveying unit 111, the opening 127 of the shutter 126, and the opening 114 of the supply unit 113. An additive is supplied to the inside of the tube 54. A stirring transmission gear 143 that is engaged with the stirring drive gear 136 is rotatably disposed between the support plate 131 and the second support plate 132. The agitation transmission gear 143 is engaged with the agitation gear 125. When the drive motor 130 is driven and the drive gear 135 is driven via the output gear 134, the agitation gear 125 is rotated via the agitation drive gear 136 and the agitation transfer gear 143. The stirring shaft 123 is rotationally driven by the rotation of the stirring gear 125, and the stirring of the additive in the additive storage box 110 is performed by the stirring blade 124. In this manner, the driving of the stirring blade 124 and the opening and closing of the shutter 126 are performed by one driving motor 130 in common. Further, it is preferable that the one-way clutch is disposed only in the transmission system that transmits the driving force of the drive motor 130 to the agitation shaft 123, and the drive motor 130 is rotated in the direction in which the shutter 126 is turned on. The stirring shaft 123 is rotationally driven. In this embodiment, the touch panel 304 can be operated to specify the color of the additive to be used. Further, the additive of the specified color can be supplied to the tube 54 by driving the drive motor 130 of the additive storage box 110 containing the additive of the specified color and turning the shutter 126 to the open state. internal. In addition, the shutter 126 remains in the closed state when the device is stopped. The reason for this is that the additive is not supplied to the tube 54 unnecessarily. In this case, the finished sheet can also be set to an arbitrary color by combining and supplying the additives of the plurality of colors to the inside of the tube 54. By controlling the number of rotations of the screw drive motor, the supply amount of the additive can be adjusted, whereby the additive of any color can be supplied by the additive of the plurality of colors. Further, the additive storage box 110 that accommodates an additive having a color other than the designated color causes the drive motor 130 to be driven to close the shutter 126. Thereby, it is possible to prevent the addition of the specified color to the tube 54. At this time, the stopper 126 may be in a closed state, and at least the additive storage box 110 for accommodating the color additive may be used. The reason for this is that, for example, in the case of a white or transparent additive, even if the additive is accidentally supplied to the tube 54 in the open state of the shutter 126, the influence on the color of the finished sheet is small. Next, the operation of the additive supply unit of the present embodiment will be described. When the user operates the touch panel 304 and specifies the color of the additive to be used, the drive motor 130 of the additive storage box 110 that accommodates the additive of the specified color is driven. When the shutter 126 is actuated by the driving of the driving motor 130 to be in an open state, the positioning protrusion 141 abuts against one end of the notch 128 to prevent the rotation of the shutter 126, and the brake is released by the torque limiter 140. The driving force of the transmission gear 138 is used. In this state, the additive of the additive storage box 110 is supplied to the tube 54 via the transport unit 111 and the supply unit 113 by rotating the screw conveyor 120. While the additive is being conveyed by the screw conveyor 120, the stirring blade 124 is rotationally driven via the stirring shaft 123 by the driving of the driving motor 130, and the additive of the additive storage box 110 is stirred. The additive supplied to the tube 54 is conveyed inside the tube 54 together with the defibrated material conveyed by the tube 54, and in the mixing portion, the air flow generated by the blower 56 and/or the rotation of the blade or the like of the blower 56 The function of the part is mixed with the defibration. The additive storage box 110 that accommodates an additive having a color other than the designated color drives the drive motor 130 to hold the shutter 126 in the closed state. Thereby, it is possible to prevent the addition of the specified color to the tube 54. As described above, according to the embodiment to which the present invention is applied, the additive storage case 110 (resin housing portion) accommodates an additive containing a resin, and a resin supply portion (for example, a screw conveyor 120). The additive contained in the additive storage box 110 is supplied to the tube 54 (transport path) for transporting the defibrated material. Further, a shutter 126 is provided which blocks the supply of the additive to the tube 54 accommodated in the additive storage box 110. As a result, since the supply of the additive contained in the additive storage box 110 to the tube 54 is blocked by the shutter 126, a negative pressure is generated inside the tube 54 for transferring the defibrated material, and the addition is not caused. The object leaks into the interior of the tube 54. As a result, the additive of the unused color is not supplied, and the sheet can be prevented from being colored to an unexpected color. Further, according to the present embodiment, the shutter 126 is closed when the additive is not supplied from the additive storage box 110. Thereby, the shutter 126 is closed when the additive is not supplied from the additive storage box 110, and unnecessary additives are prevented from leaking into the inside of the tube 54, thereby preventing the supply of the additive of the unused color. Further, according to the present embodiment, the shutter 126 is closed when the apparatus is stopped. Thereby, by closing the shutter 126 when the apparatus is stopped, unnecessary additives are not leaked into the inside of the tube 54, and it is possible to prevent the supply of the color or the kind of additive which is not used. Further, according to the present embodiment, the additive storage box 110 is composed of a plurality of additive storage boxes 110 that accommodate the additives. Thereby, a plurality of additives of different colors or different types can be used because the plurality of additive storage boxes 110 respectively accommodate the additives. Further, by closing the shutter 126 of the additive storage box 110 containing the unnecessary additive, the unnecessary additive is prevented from leaking into the inside of the tube 54, thereby preventing the addition of the color or the type of supply. Things. Further, according to the present embodiment, at least one of the plurality of additive storage boxes 110 is closed with the shutter 126 corresponding to the additive storage box 110 in which the color additive is accommodated. Thereby, by closing the shutter 126 corresponding to the additive storage box 110 accommodating the color additive, it is possible to prevent the unexpected color from being caused by the coloring additive of the sheet. Further, according to the present embodiment, the stirring mechanism (for example, the stirring blade 124) for stirring the additive in the additive storage box 110 is provided, and the driving motor 130 (driving source) of the shutter 126 is common to the stirring mechanism. Thereby, by making the drive motor 130 of the shutter 126 common to the agitation mechanism, a new power source is not required. As a result, the opening and closing operation of the shutter 126 and the stirring operation of the stirring blade can be performed by one driving source. Next, another embodiment of the drive mechanism of the additive supply unit will be described. Fig. 7 is a perspective view showing another embodiment of a drive mechanism of the additive supply unit. Fig. 8 is a perspective view of the drive mechanism as seen from the back side (back side) of Fig. 7. In the present embodiment, the torque limiter 140 is not used, and the shutter gear 129 is configured to have a half-circumferential tooth. The shutter gear 129 is fixed to an annular color member 151 attached to the outer periphery of the shutter 126. Further, a leaf spring 150 is attached to the third support plate 133. On the side of the leaf spring 150 side of the color member 151, two positioning pins 152 are protruded (only one of them is shown). Each of the positioning pins 152 is disposed at a position opposed to the substantially diametrical direction of the color member 151. The leaf spring 150 is configured to bias the direction in which the shutter 126 is closed by the positioning pin 152 on one side when the shutter 126 is in the open state. Further, the leaf spring 150 is configured to apply a biasing force to the closing direction by the positioning pin 152 on the other side when the shutter 126 is in the closed state. When the shutter 126 is opened, the drive motor 130 is rotated, and the shutter drive gear 139 is rotated via the output gear 134, the drive gear 135, and the brake transmission gear 138. The shutter 126 is rotated via the shutter gear 129 by the rotation of the shutter drive gear 139. When the shutter 126 is rotated and rotated to the state shown in FIG. 7, the teeth of the shutter drive gear 139 are located at one end of the shutter gear 129, so that the brake drive gear and the brake gear 129 are engaged. Was released. Although the shutter drive gear 139 continues to rotate in this state, the shutter gear 129 does not continue to rotate, and the shutter 126 is in an open state. Thereby, the conveyance of the additive is performed by the screw conveyor 120 when the shutter 126 is in the open state. Further, in this state, the positioning pin 152 on the side of the shutter 126 is biased by the leaf spring 150 to be biased in the closing direction. On the other hand, if the drive motor 130 is rotated in the reverse direction, the shutter 126 is biased in the closing direction by the urging force of the leaf spring 150, so that the shutter 126 is rotated in the closing direction to open the shutter. The gear 129 is engaged with the brake drive gear 139. Thereby, the shutter 126 is rotated via the shutter gear 129 by the rotation of the shutter drive gear 139, and the shutter 126 is closed. When the teeth of the shutter drive gear 139 are located at the other end of the shutter gear 129, the engagement between the shutter drive gear 139 and the shutter gear 129 is released. Thereby, the rotational force is not transmitted to the shutter gear 129, and the shutter 126 is kept in the closed state. In this state, the shutter 126 is biased by the leaf spring 150 by the positioning pin 152 on the other side and is biased in the opening direction. As described above, in the present embodiment, the rotational force of the shutter drive gear 139 can be released without using the torque limiter 140. As a result, the opening and closing operation of the shutter 126 and the stirring operation of the stirring blade 124 can be performed by one driving motor 130. Further, in the present embodiment, the shutter 126 is biased by the leaf spring 150. However, the present invention is not limited thereto, and other springs or elastic bodies may be used. Although an embodiment of the present invention has been described above, the present invention is not limited thereto, and various modifications can be made as needed. In the above embodiment, the shutter 126 is rotated and opened and closed by the driving of the drive motor 130. However, the present invention is not limited thereto. For example, the opening and closing operation of the shutter 126 may be performed using a solenoid or the like.

2‧‧‧ tube

3‧‧‧ tube

7‧‧‧ tube

8‧‧‧ tube

10‧‧‧Supply Department

12‧‧‧Grade

14‧‧‧

16‧‧‧Chute

20‧‧‧Defibration Department

22‧‧‧Import

23‧‧‧ tube

24‧‧‧Export

26‧‧‧Defibration blower

27‧‧‧Dust collection department

28‧‧‧ Capture blower

29‧‧‧ tube

40‧‧‧Sorting Department

41‧‧‧Drum Department

42‧‧‧Import

43‧‧‧Shell Department

44‧‧‧Export

45‧‧‧1st mesh formation

46‧‧‧Net belt

47‧‧‧ Tension roller

48‧‧‧Attraction

49‧‧‧Rotating body

50‧‧‧Mixed Department

52‧‧‧Additive Supply Department

54‧‧‧ tube

56‧‧‧Mixed air blower

60‧‧‧Stacking Department

61‧‧‧Drum Department

62‧‧‧Import

63‧‧‧Shell Department

70‧‧‧2nd mesh formation

72‧‧‧Net belt

74‧‧‧ Tension roller

76‧‧‧sucking mechanism

79‧‧‧Transportation Department

79a‧‧‧ mesh belt

79b‧‧‧ tension roller

79c‧‧‧ suction mechanism

80‧‧‧Sheet Forming Department

82‧‧‧ Pressurization

84‧‧‧heating department

85‧‧‧pressure roller

86‧‧‧heating roller

90‧‧‧cutting department

92‧‧‧1st cut-off

94‧‧‧2nd cut-off

96‧‧‧Exporting Department

100‧‧‧Sheet manufacturing equipment

110‧‧‧Additive storage box

111‧‧‧Transportation Department

112‧‧‧ openings

113‧‧‧Supply Department

114‧‧‧ openings

120‧‧‧Spiral conveyor

121‧‧‧Spiral gears

122‧‧‧Thread

123‧‧‧Axis for mixing

124‧‧‧Agitating blades

125‧‧‧Agitating gears

126‧‧ ‧Block

127‧‧‧ openings

128‧‧‧ gap

129‧‧‧ gears for gates

130‧‧‧Drive motor

131‧‧‧Support board

132‧‧‧2nd support board

133‧‧‧3rd support board

134‧‧‧output gear

135‧‧‧ drive gear

136‧‧‧Agitating drive gear

137‧‧‧Transfer axis

138‧‧‧Transmission gears for gates

139‧‧‧Drive gears for gates

140‧‧‧Torque Limiter

141‧‧‧ Positioning protrusions

143‧‧‧Transfer gears

150‧‧‧ leaf spring

151‧‧‧Color components

152‧‧‧Locating pin

202‧‧‧ humidification department

204‧‧‧ humidification department

206‧‧‧ humidification department

208‧‧‧ humidification department

210‧‧‧Humidification Department

212‧‧‧ humidification department

300‧‧‧ frame

301‧‧‧Open and close the door

302‧‧‧Resin 匣 Storage Department

303‧‧‧匣

304‧‧‧Touch panel

305‧‧‧Emergency stop button

306‧‧‧Power switch

307‧‧‧ front cover

308‧‧‧In-machine storage tank

309‧‧‧Compressor

310‧‧‧dust collection tank

311‧‧‧paper stacker

312‧‧‧paper feed tray

313‧‧‧Drawing tray

P‧‧‧Subdivision

R‧‧‧ arrow

S‧‧‧Sheet

V1‧‧‧ speed

V2‧‧‧ speed

W1‧‧‧1st mesh

W2‧‧‧2nd mesh

Fig. 1 is a front view of a sheet manufacturing apparatus to which the present invention is applied. Fig. 2 is a schematic front view showing a state in which the front panel of Fig. 1 is removed. Fig. 3 is a schematic view showing the configuration and operation of a sheet manufacturing apparatus. Fig. 4 is a perspective view of an additive supply unit. Fig. 5 is a perspective view showing a driving portion of the additive supply portion. Fig. 6 is a cross-sectional view of the additive supply unit. Fig. 7 is a perspective view of a drive mechanism of the additive supply unit. Fig. 8 is a perspective view of a drive mechanism of the additive supply unit.

Claims (5)

A sheet manufacturing apparatus which is obtained by laminating a mixture of a defibrated material obtained by defibrating a raw material containing fibers and a resin, and forming a sheet by pressurization heating; and further comprising: a resin accommodating portion accommodating the resin; a resin supply unit that supplies the resin accommodated in the resin storage unit to a transport path that transports the defibrated material, and a shutter that blocks supply of the resin stored in the resin storage unit to the transport path; a stirring mechanism for a resin in the resin accommodating portion, wherein a driving source of the shutter is common to the stirring mechanism, and a drive gear for the shutter is rotationally driven by driving the drive source, and a torque is applied to the drive gear for the brake Limiter. The sheet manufacturing apparatus of claim 1, wherein the shutter is closed when the resin is not supplied from the resin containing portion. The sheet manufacturing apparatus of claim 1, wherein the shutter is closed when the apparatus is stopped. The sheet manufacturing apparatus according to any one of claims 1 to 3, wherein the resin accommodating portion is composed of a plurality of resin accommodating portions for accommodating the resin. The sheet manufacturing apparatus according to claim 4, wherein at least the plurality of resin accommodating portions close the shutter corresponding to the resin accommodating portion for accommodating the colored resin.