Coarse fragment supply device and fiber structure manufacturing device

Abstract

The invention provides a coarse fragment supply device and a fiber structure manufacturing device. The coarse fragment supply device is characterized by being provided with: a storage tank for storing coarse fragments containing fibers; a partition part that partitions the interior of the storage tank into a first space and a second space located below the first space by closing up the interior of the storage tank; an adjustment unit that adjusts the amount of coarse debris transferred from the first space to the second space; the stirring part is used for stirring the coarse fragments in the second space; and a discharge port that discharges the coarse debris from the second space.

Description

Technical Field

[0001] The present invention relates to a coarse chip supply device and a fiber structure manufacturing device. Background Art

[0002] A fiber structure manufacturing device is known, which includes a coarse crushing section for coarsely crushing waste paper, a storage section for storing the coarse crushed pieces obtained in the coarse crushing section, a defibration section for defibration of the coarse crushed pieces discharged from the storage section, an accumulation section for piling up the defibrated materials obtained in the defibration section on a plane, a heating and pressurizing section for heating and pressurizing the accumulated material sheets, a cutting section for cutting the thin sheets obtained by the heating and pressurizing section into a predetermined shape, and a thin sheet recovery section for recovering the obtained thin sheets.

[0003] As the storage unit, for example, there can be mentioned the storage unit described in Patent Document 1. The storage unit described in Patent Document 1 includes a storage tank for storing the coarse fragments and a humidifier for humidifying the coarse fragments in the storage tank.

[0004] However, in the structure described in Patent Document 1, there is a problem that the coarse fragments are not stirred sufficiently or uniformly.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2012-7246 Summary of the invention

[0006] The coarse fragment supply device of the present invention comprises:

[0007] A storage tank for storing coarse fragments including fibers, and having a first space and a second space located below the first space;

[0008] an introduction port, which is in communication with the first space and introduces the coarse fragments into the first space;

[0009] a partition portion that partitions the storage tank into the first space and the second space and has a communication port that allows the first space to communicate with the second space;

[0010] a regulating portion for regulating a transfer amount of the coarse fragments transferred from the first space to the second space via the communication port;

[0011] a stirring portion for stirring the coarse fragments in the second space;

[0012] A discharge port discharges the coarse fragments stirred by the stirring part from the second space.

[0013] The fiber structure manufacturing device of the present invention comprises:

[0014] The coarse fragment supply device of the present invention;

[0015] a defibration section for defibration of the coarse fragments supplied from the coarse fragment supplying device to produce defibrated products;

[0016] an accumulation section for stacking the defibrated material to form an accumulation;

[0017] A shaping unit is configured to shape the deposit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram showing an outline of a fiber structure production apparatus including a coarse chip supplying apparatus according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 A longitudinal section through a coarse fragment supply device is shown.

[0020] Figure 3 for Figure 2 AA line section view in.

[0021] Figure 4 for Figure 2 BB line section view in.

[0022] Figure 5 for Figure 2 An enlarged cross-sectional view of the stirring components and shaft in FIG.

[0023] Figure 6 for Figure 2 A three-dimensional view of the stirring component in FIG. DETAILED DESCRIPTION

[0024] Hereinafter, the coarse chip supplying device and the fiber structure manufacturing device of the present invention will be described in detail based on the preferred embodiments shown in the drawings.

[0025] Implementation

[0026] Figure 1 It is a structural diagram showing an outline of a fiber structure production apparatus including a coarse chip supplying apparatus according to an embodiment of the present invention. Figure 2 for Figure 1 A longitudinal section through a coarse fragment supply device is shown.

[0027] Figure 3 for Figure 2 AA line section view in. Figure 4 for Figure 2 BB line section view in. Figure 5 for Figure 2 An enlarged cross-sectional view of the stirring components and shaft in FIG. Figure 6 for Figure 2 A three-dimensional view of the stirring component in FIG.

[0028] In addition, in the following text, sometimes Figure 1 , Figure 2 , Figure 5 as well as Figure 6 The upper side of a is referred to as "upper" or "above", and the lower side is referred to as "lower" or "below". Figure 2 The left side of is referred to as "left" or "left side", and the right side is referred to as "right" or "right side". Figure 1 This is a schematic structural diagram, and the positional relationship, orientation, size, etc. of each part of the fiber structure manufacturing device 100 are not limited to the illustrated form. Figure 1 In the diagram, the direction in which the coarse fragments M2, the defibrated material M3, the first screened material M4-1, the second screened material M4-2, the first material sheet M5, the fine material M6, the mixture M7, the second material sheet M8, and the sheet S are conveyed, that is, the direction indicated by the arrow mark is also referred to as the conveying direction. Figure 1 The top side of the arrow mark in the figure is also called the "downstream side" in the conveying direction. Figure 1 The base end side indicated by the arrow in FIG. 1 is also referred to as the “upstream side” in the conveying direction.

[0029] Figure 1 The fiber structure manufacturing apparatus 100 shown is a fiber structure manufacturing apparatus 100 that produces a sheet S as an example of a fiber structure from a raw material M1 such as waste paper such as used copy paper. The fiber structure manufactured by the fiber structure manufacturing apparatus 100 is not limited to the sheet S, but may also be a block-shaped object.

[0030] like Figure 1 As shown, the fiber structure manufacturing device 100 includes a raw material supply section 11, a coarse crushing section 12, a coarse crushing supply device 3 as an example of the coarse crushing supply device of the present invention, a defibration device 13, a screening section 14, a first material sheet forming section 15, a subdivision section 16, a mixing section 17, a dispersion section 18, a second material sheet forming section 19, a forming section 20, a cutting section 21, a material preparation section 22, and a recovery section 27.

[0031] The fiber structure manufacturing apparatus 100 also includes a humidifying section 231 , a humidifying section 232 , a humidifying section 233 , a humidifying section 234 , a humidifying section 235 , and a humidifying section 236 . The fiber structure manufacturing apparatus 100 also includes a blower 261 , a blower 262 , and a blower 263 .

[0032] In addition, in the fiber structure manufacturing device 100, the raw material supply process, the coarse crushing process, the coarse fragment supply process, the defibration process, the screening process, the first material sheet forming process, the splitting process, the mixing process, the disassembly process, the second material sheet forming process, the thin sheet forming process, and the cutting process are performed in this order.

[0033] The structure of each part is described below.

[0034] The raw material supply section 11 is a part for implementing the raw material supply process of supplying the raw material M1 to the coarse crushing section 12. The raw material M1 is a sheet-like material composed of a fiber-containing material containing cellulose fibers. In addition, the cellulose fibers only need to be a fibrous material with cellulose as a compound as the main component, and in addition to cellulose, hemicellulose and lignin may also be contained. In addition, the raw material M1 may be a woven fabric, a non-woven fabric, etc., and its form is any form. In addition, the raw material M1 may be, for example, recycled paper produced by defibrillating waste paper, or YUPO paper (registered trademark) of synthetic paper, or it may not be recycled paper.

[0035] The coarse crushing unit 12 is a part that performs a coarse crushing process of coarsely crushing the raw material M1 supplied from the raw material supply unit 11 in a gas such as the atmosphere. The coarse crushing unit 12 includes a pair of coarse crushing blades 121 and a chute 122 .

[0036] A pair of coarse crushing blades 121 can coarsely crush the raw material M1 between them by rotating in opposite directions, that is, the raw material M1 can be cut into coarse fragments M2. The shape and size of the coarse fragments M2 are preferably suitable for the defibration process in the defibration device 13. As the shape of the coarse fragments M2, for example, small pieces with a square planar shape and rectangular, especially long strip-shaped small pieces can be listed. In addition, the size of the coarse fragments M2 is preferably, for example, a small piece with an average length of one side of less than 100 mm, and more preferably a small piece of more than 3 mm and less than 70 mm. The shape of the small piece may also be a shape other than a square and a rectangle. In addition, the thickness is preferably greater than 0.07 mm and less than 0.10 mm.

[0037] The chute 122 is disposed below the pair of coarse crushing blades 121 and has, for example, a conical shape or a funnel shape. Thus, the chute 122 can receive the coarse pieces M2 that are coarsely crushed by the coarse crushing blades 121 and fall down.

[0038] In addition, a humidifying unit 231 is disposed above the chute 122 so as to be adjacent to the pair of coarse crushing blades 121. The humidifying unit 231 is a component for humidifying the coarse fragments M2 in the chute 122. The humidifying unit 231 is composed of a vaporizing humidifier having a filter (not shown) containing moisture, and supplies humidified air with increased humidity to the coarse fragments M2 by passing air through the filter. By supplying humidified air to the coarse fragments M2, it is possible to suppress the coarse fragments M2 from being attached to the chute 122 or the like due to static electricity.

[0039] The chute 122 is connected to the coarse-chip supply device 3. The coarse chips M2 collected in the chute 122 are conveyed to the coarse-chip supply device 3 and temporarily stored, and are supplied from the coarse-chip supply device 3 to the defibration device 13. The coarse-chip supply device 3 is a device for implementing the coarse-chip supply process, and the device moistens the coarse chips M2 and supplies the coarse chips M2 to the defibration device 13. The coarse-chip supply device 3 will be described in detail later.

[0040] like Figure 1 As shown, the defibration device 13 is a part for implementing the defibration process of defibration of the coarse fragments M2 in gas, that is, in a dry manner. Through the defibration process in the defibration device 13, the defibrated material M3 can be generated from the coarse fragments M2. Here, "defibration" means to disassemble the coarse fragments M2 formed by bonding a plurality of fibers into individual fibers. And, the disassembled material becomes the defibrated material M3. The defibrated material M3 is in the shape of a line or a belt. In addition, the defibrated material M3 may also exist in a state of being entangled with each other and forming a block, that is, in a state of forming a so-called "clump".

[0041] Furthermore, the defibration device 13 can generate a flow of air, i.e., an airflow, from the coarse fragment supply device 3 toward the screening unit 14 by rotating an impeller (not shown). Thus, the coarse fragments M2 can be introduced from the pipe 241 to the upstream side of the defibration device 13, and after the defibration process, the defibrated material M3 can be sent to the screening unit 14 through the pipe 242.

[0042] A pipe 242 is connected to the downstream side of the defibration device 13. A blower 261, such as a turbo fan, is provided in the middle of the pipe 242. The blower 261 is an airflow generating device that generates an airflow toward the screening section 14. This promotes the introduction of the coarse fragments M2 into the defibration device 13 and the delivery of the defibrated material M3 to the screening section 14. Based on this structure, the defibration device 13 smoothly passes through and defibrates the coarse fragments M2 as raw materials, but the operation of the blower 261 provided at the downstream side of the defibration device 13 promotes the passage of the coarse fragments M2 into the defibration device 13 and the defibration. In addition, the blower 261 may also be provided at the upstream side of the defibration device 13.

[0043] The screening unit 14 is a part for implementing a screening process of screening the defibrated material M3 according to the size of the fiber length. In the screening unit 14, the defibrated material M3 is screened into a first screened material M4-1 and a second screened material M4-2 having a larger fiber length than the first screened material M4-1. The first screened material M4-1 has a size suitable for the subsequent production of the sheet S. On the other hand, the second screened material M4-2 includes, for example, insufficiently defibrated material or material in which defibrated fibers are excessively agglomerated.

[0044] The screening unit 14 includes a drum unit 141 and a housing unit 142 that houses the drum unit 141 .

[0045] The drum part 141 is a screen composed of a cylindrical mesh body and rotates around its central axis. The defibrated material M3 flows into the drum part 141. And, by the rotation of the drum part 141, the defibrated material M3 smaller than the mesh opening of the net is screened out as the first screened material M4-1, and the defibrated material M3 larger than the mesh opening of the net is screened out as the second screened material M4-2.

[0046] The first screened material M4 - 1 falls from the drum portion 141 .

[0047] On the other hand, the second screened material M4-2 is sent to the tube 243 connected to the drum part 141. The end of the tube 243 on the opposite side to the drum part 141, that is, on the downstream side, is connected to the middle of the tube 241. The second screened material M4-2 passing through the tube 243 merges with the coarse fragments M2 in the tube 241 and flows into the defibration device 13 together with the coarse fragments M2. Thus, the second screened material M4-2 is returned to the defibration device 13 and defibrated together with the coarse fragments M2.

[0048] Furthermore, the first screened material M4-1 dropped from the drum unit 141 drops while being dispersed in the gas, and falls toward the first web forming unit 15 located below the drum unit 141. The first web forming unit 15 is a portion for performing a first web forming process of forming the first web M5 from the first screened material M4-1. The first web forming unit 15 includes a mesh belt 151, three suspension rollers 152, and a suction unit 153.

[0049] The mesh belt 151 is an endless belt on which the first screened material M4-1 is accumulated. The mesh belt 151 is wound around three suspension rollers 152. The suspension rollers 152 are driven to rotate, so that the first screened material M4-1 on the mesh belt 151 is conveyed to the downstream side.

[0050] The first screened object M4-1 has a size larger than the mesh opening of the mesh belt 151. Thus, the first screened object M4-1 is restricted from passing through the mesh belt 151, and can be accumulated on the mesh belt 151. In addition, since the first screened object M4-1 is transported to the downstream side together with the mesh belt 151 while being accumulated on the mesh belt 151, it is formed into a layered first web M5.

[0051] In addition, the first screened material M4-1 may contain fly ash or dust, for example. Fly ash or dust may be generated by, for example, coarse crushing or defibration. Such fly ash or dust is recovered in the recovery unit 27 described later.

[0052] The suction part 153 is a suction mechanism that sucks air from below the mesh belt 151. Thereby, fly ash and dust that have passed through the mesh belt 151 can be sucked together with the air.

[0053] Moreover, the suction part 153 is connected to the recovery part 27 via the pipe 244. The fly ash and dust sucked by the suction part 153 are recovered in the recovery part 27.

[0054] The recovery part 27 is also connected to a pipe 245. In addition, a blower 262 is provided in the middle of the pipe 245. The operation of the blower 262 can generate a suction force in the suction part 153. Thus, the formation of the first material piece M5 on the mesh belt 151 is promoted. The first material piece M5 becomes a substance such as fly ash or dust that has been removed. In addition, the fly ash or dust passes through the pipe 244 through the operation of the blower 262 and reaches the recovery part 27.

[0055] The housing 142 is connected to the humidifying unit 232. The humidifying unit 232 is composed of a vaporizing humidifier. Thus, humidified air is supplied to the housing 142. The humidified air can humidify the first object M4-1, thereby preventing the first object M4-1 from being attached to the inner wall of the housing 142 due to static electricity.

[0056] A humidifier 235 is disposed at the downstream side of the screening unit 14. The humidifier 235 is composed of an ultrasonic humidifier that atomizes water. Thus, water can be supplied to the first material sheet M5, and thus the moisture content of the first material sheet M5 is adjusted. By this adjustment, the adsorption of the first material sheet M5 to the mesh belt 151 caused by static electricity can be suppressed. Thus, the first material sheet M5 can be easily peeled off from the mesh belt 151 at the position where the mesh belt 151 is folded back by the installation roller 152.

[0057] The subdividing section 16 is arranged at the downstream side of the humidifying section 235. The subdividing section 16 is a part for implementing the dividing process of dividing the first material sheet M5 peeled off from the mesh belt 151. The subdividing section 16 has a rotating blade 161 supported in a rotatable manner and a housing 162 for housing the rotating blade 161. Moreover, the first material sheet M5 can be divided by the rotating rotating blade 161. The divided first material sheet M5 becomes a subdivided body M6. In addition, the subdivided body M6 descends in the housing 162.

[0058] The housing 162 is connected to the humidifying unit 233. The humidifying unit 233 is composed of a vaporizing humidifier. Thus, humidified air is supplied to the housing 162. The humidified air can suppress the fine particles M6 from being attached to the rotating blades 161 or the inner wall of the housing 162 due to static electricity.

[0059] A mixing section 17 is disposed downstream of the subdividing section 16 . The mixing section 17 is a section for performing a mixing process of mixing the subdivided body M6 and the additive. The mixing section 17 includes an additive supply section 171 , a pipe 172 , and a blower 173 .

[0060] The pipe 172 is a flow passage that connects the shell portion 162 of the subdividing portion 16 and the shell portion 182 of the dispersing portion 18 to allow the mixture M7 of the subdivided body M6 and the additive to pass therethrough.

[0061] An additive supply unit 171 is connected to the middle of the tube 172. The additive supply unit 171 includes a housing 170 containing an additive and a screw feeder 174 disposed in the housing 170. The screw feeder 174 rotates, so that the additive in the housing 170 is pushed out from the housing 170 and supplied to the tube 172. The additive supplied to the tube 172 is mixed with the fine particles M6 to form a mixture M7.

[0062] Here, as the additive supplied from the additive supply unit 171, for example, there can be listed a binder for bonding fibers together, a colorant for coloring fibers, an aggregation inhibitor for inhibiting aggregation of fibers, a flame retardant for making fibers less flammable, and a paper strength enhancer for enhancing the paper strength of the sheet S, and one or more of these can be used in combination. Hereinafter, as an example, a case where the additive is a binder P1 will be described. By making the additive contain a binder for bonding fibers together, the strength of the sheet S can be improved.

[0063] Binder P1 can include, for example, starch, dextrin, glycogen, amylose, hyaluronic acid, kudzu, konjac, pig tooth pollen, etherified starch, esterified starch, natural glue, fiber induction paste, seaweed, animal protein and other natural ingredients, as well as polyvinyl alcohol, polyacrylic acid, polyacrylamide, etc., and one selected from them can be used, or two or more can be combined for use, but preferably a natural ingredient, more preferably starch. In addition, for example, various polyolefins, acrylic resins, polyvinyl chloride, polyester, polyamide and other thermoplastic resins, various thermoplastic elastomers, etc. can also be used.

[0064] In addition, a blower 173 is provided in the middle of the tube 172, on the downstream side compared with the additive supply section 171. The mixing of the fine particles M6 and the binder P1 is promoted by the action of the rotating parts such as the vanes of the blower 173. In addition, the blower 173 can generate an airflow toward the dispersion section 18. The fine particles M6 and the binder P1 can be stirred in the tube 172 by the airflow. Thus, the mixture M7 is transported to the dispersion section 18 in a state where the fine particles M6 and the binder P1 are uniformly dispersed. In addition, the fine particles M6 in the mixture M7 are disassembled in the process of passing through the tube 172, and become finer fibers.

[0065] The blower 173 is electrically connected to the control device 28, and the operation of the blower 173 is controlled. By adjusting the air flow rate of the blower 173, the amount of air sent into the drum 181 can be adjusted.

[0066] Although not shown in the figure, the end of the tube 172 on the roller 181 side is branched into two branches, and the branched ends are respectively connected to introduction ports (not shown) formed on the end surface of the roller 181 .

[0067] Figure 1 The dispersing unit 18 shown is a part for performing a dispersing process of dispersing mutually entangled fibers in the mixture M7 and releasing them. The dispersing unit 18 includes a drum 181 for introducing and releasing the defibrated mixture M7 and a housing 182 for housing the drum 181 .

[0068] The drum 181 is a screen composed of a cylindrical mesh body and rotates around its central axis. The drum 181 rotates so that fibers smaller than the mesh openings of the mesh in the mixture M7 can pass through the drum 181. At this time, the mixture M7 is disassembled and released together with the air. That is, the drum 181 functions as a discharge unit for releasing the material containing the fibers.

[0069] The drum 181 is connected to a driving source (not shown) and rotated by a rotational force output from the driving source. The driving source is electrically connected to the control device 28 to control the operation of the control device 28.

[0070] In addition, the housing 182 is connected to the humidifying unit 234. The humidifying unit 234 is composed of a vaporizing humidifier. Thus, humidified air is supplied to the housing 182. The humidified air can humidify the inside of the housing 182, so that the mixture M7 can be prevented from adhering to the inner wall of the housing 182 due to static electricity.

[0071] In addition, the mixture M7 discharged from the drum 181 falls while being dispersed in the gas, and falls to the second web forming unit 19 located below the drum 181. The second web forming unit 19 is a part for implementing a second web forming process for depositing the mixture M7 to form a second web M8 as a deposit. The second web forming unit 19 includes a mesh belt 191, a setting roller 192, and a suction unit 193.

[0072] The mesh belt 191 is a mesh member, and in the illustrated structure, it is composed of an endless belt. In addition, the mixture M7 dispersed and released by the dispersion unit 18 is accumulated on the mesh belt 191. The mesh belt 191 is wound on four installation rollers 192. And, by the rotation drive of the installation rollers 192, the mixture M7 on the mesh belt 191 is transported to the downstream side.

[0073] In addition, although the illustrated structure is a structure using the mesh belt 191 as an example of a mesh member, the present invention is not limited to this, and for example, a flat plate-shaped structure may also be used.

[0074] Furthermore, most of the mixture M7 on the mesh belt 191 is larger than the mesh opening of the mesh belt 191. Thus, the mixture M7 is restricted from passing through the mesh belt 191, and can be deposited on the mesh belt 191. Furthermore, since the mixture M7 is deposited on the mesh belt 191 and is transported to the downstream side together with the mesh belt 191, it is formed into a layered second web M8.

[0075] The suction unit 193 is a suction mechanism that sucks air from below the mesh belt 191. As a result, the mixture M7 can be sucked onto the mesh belt 191, thereby promoting the accumulation of the mixture M7 onto the mesh belt 191.

[0076] The suction part 193 is connected to a tube 246. A blower 263 is provided in the middle of the tube 246. The blower 263 operates to generate a suction force in the suction part 193.

[0077] A humidifying section 236 is disposed at the downstream side of the dispersing section 18. The humidifying section 236 is composed of an ultrasonic humidifier similar to the humidifying section 235. Thus, moisture can be supplied to the second web M8, and thus the moisture content of the second web M8 is adjusted. By this adjustment, the adsorption of the second web M8 to the mesh belt 191 caused by static electricity can be suppressed. Thus, the second web M8 can be easily peeled off from the mesh belt 191 at the position where the mesh belt 191 is folded back by the installation roller 192.

[0078] The total amount of water added to the humidifying sections 231 to 236 is preferably, for example, 0.5 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the material before humidification.

[0079] A forming section 20 is disposed downstream of the second web forming section 19 . The forming section 20 is a section that performs a sheet forming process of forming a sheet S from the second web M8 . The forming section 20 includes a pressurizing section 201 and a heating section 202 .

[0080] The pressurizing section 201 has a pair of calendering rollers 203, and can pressurize the second material M8 between the calendering rollers 203 without heating. As a result, the density of the second material M8 is increased. In addition, as the degree of heating in the case of heating, for example, it is preferred that the degree of heating is such that the adhesive P1 does not melt. Moreover, the second material M8 is conveyed toward the heating section 202. In addition, one of the pair of calendering rollers 203 is an active roller driven by the operation of a motor not shown in the figure, and the other is a driven roller.

[0081] The heating section 202 has a pair of heating rollers 204, and can pressurize the second web M8 while heating it between the heating rollers 204. The heating and pressurizing causes the binder P1 to melt inside the second web M8, thereby bonding the fibers to each other via the melted binder P1. Thus, a sheet S is formed. The sheet S is then conveyed toward the cutting section 21. In addition, one of the pair of heating rollers 204 is a driving roller driven by the operation of a motor not shown, and the other is a driven roller.

[0082] A cutting section 21 is disposed on the downstream side of the forming section 20 . The cutting section 21 is a section that performs a cutting process of cutting the sheet S. The cutting section 21 includes a first shear 211 and a second shear 212 .

[0083] The first cutter 211 is a member that cuts the sheet S in a direction intersecting the conveying direction of the sheet S, particularly in a direction perpendicular thereto.

[0084] The second cutter 212 is a member that cuts the sheet S in a direction parallel to the conveying direction of the sheet S at the downstream side of the first cutter 211. This cutting is a process of removing unnecessary portions of both side ends of the sheet S in the width direction to make the width of the sheet S uniform.

[0085] The cutting by the first shear 211 and the second shear 212 can obtain a sheet S of a desired shape and size. The sheet S is further conveyed to the downstream side and accumulated in the stock preparation unit 22 .

[0086] Each of the components of the fiber structure manufacturing apparatus 100 is electrically connected to the control device 28. The operation of each of the components is controlled by the control device 28.

[0087] like Figure 1 As shown, the control device 28 includes a control unit 281 , a storage unit 282 , and a communication unit 283 .

[0088] The control unit 281 has at least one processor and executes various programs stored in the storage unit 282. As the processor, for example, a CPU (Central Processing Unit) can be used. In addition, the control unit 281 has various functions such as a function of controlling the drive of the blower 261 in the fiber structure manufacturing device 100, a function of controlling the drive of various parts of the device related to sheet manufacturing, and a drive control of the motor M described later.

[0089] The storage unit 282 stores, for example, programs related to sheet production, etc. As for the atomization of the raw material by the defibrator 13, a program related to the operation sequence including conditions such as the operation timing and rotation speed of the blower 261 and the motor M is stored.

[0090] The communication unit 283 is constituted by, for example, an I / O interface, and communicates with each unit of the fiber structure manufacturing apparatus 100. The communication unit 283 has a function of communicating with, for example, a computer or a server (not shown) via a network.

[0091] The control device 28 may be built into the fiber structure manufacturing apparatus 100 or may be provided in an external device such as an external computer. In addition, the control unit 281 and the storage unit 282 may be integrated to form a single unit, or the control unit 281 may be built into the fiber structure manufacturing apparatus 100 and the storage unit 282 may be provided in an external device such as an external computer, or the storage unit 282 may be built into the fiber structure manufacturing apparatus 100 and the control unit 281 may be provided in an external device such as an external computer.

[0092] Next, the structure of the coarse fragment supply device 3 will be described.

[0093] like Figure 2 As shown, the coarse fragment supplying device 3 includes a storage section 4 for storing the coarse fragments M2 , a stirring section 5 for stirring the coarse fragments M2 in the storage section 4 , a humidifying section 6 for humidifying the coarse fragments M2 in the storage section 4 , and a conditioning section 7 .

[0094] The storage section 4 includes a storage tank 41 , a partition 42 , and a flow path forming member 43 .

[0095] The storage tank 41 is a tank for temporarily storing the coarse fragments M2 in the internal space S0, and has an inlet 411, a discharge port 412, and an exhaust port 413. The inlet 411 is formed on the top surface of the upper portion of the storage tank 41, the discharge port 412 is formed at the bottom of the storage tank 41, and the exhaust port 413 is formed on the side surface of the upper portion of the storage tank 41.

[0096] The storage tank 41 is in the shape of a bottomed cylinder, but is not limited to this structure, and may be in any shape such as a cube.

[0097] The inlet 411 is an opening provided so as to communicate with the internal space S0 of the storage tank 41 and is connected to the Figure 1 The chute 122 shown in FIG. The coarse fragments M2 collected by passing through the chute 122 are introduced into the internal space S0 through the introduction port 411 .

[0098] The internal space S0 includes a first space S1, a second space S2, and a humidified air exhaust space S3. The first space S1 is located above the second space S2. The coarse pieces M2 introduced through the introduction port 411 are first supplied to the first space S1, and temporarily stored in the first space S1, and further transferred to the second space S2. The first space S1 and the second space S2 are separated by a partition 42 described later.

[0099] The discharge port 412 is provided at the bottom of the storage tank 41, that is, on the side of the lower part of the storage tank 41. The coarse pieces M2 in the second space S2 are stirred by the operation of the stirring unit 5 described later and discharged from the discharge port 412. The discharge port 412 is connected to the pipe 241, and the coarse pieces M2 discharged from the discharge port 412 are discharged to the storage tank 41 through the pipe 241. Figure 1 The defibration device 13 shown is fed and defibrated.

[0100] The discharge port 412 is provided at the bottom of the storage tank 41. Thus, the coarse fragments M2 can be efficiently discharged from the discharge port 412 while being stirred.

[0101] In addition, the discharge port 412 may be provided on the bottom surface of the storage tank 41 or may be located at another position.

[0102] The partition 42 is composed of a member having a conical or funnel-shaped hole whose inner diameter decreases as it goes downward. That is, the partition 42 has a communication port 421 at the bottom. A shaft 51 described later is inserted into the communication port 421 in a non-contact manner. The edge of the communication port 421 and the shaft 51 are separated by a predetermined distance. Therefore, the coarse fragments M2 can be transferred from the first space S1 to the second space S2 via the communication port 421 by the rotation of the first stirring member 52 described later.

[0103] In addition, if Figure 2 As shown, the partition 42 has an inclined surface 422 located on the first space S1 side. The inclined surface 422 is inclined in a manner such that the communication port 421 is at the lowest part. Specifically, the inclined surface 422 is in a shape along the shape of the upper surface of the partition 42, for example, a cone or funnel shape that surrounds the entire periphery of the communication port 421. By having such an inclined surface 422, the coarse fragments M2 in the first space S1 can be smoothly guided to the communication port 421, so that the coarse fragments M2 are transferred to the second space S2.

[0104] The shape of the inclined surface 422 is not limited to the above-mentioned shape, and may be, for example, a pyramidal structure surrounding the entire periphery of the communication port 421 or a structure in which a pair of inclined planes are arranged on the left and right of the shaft 51 .

[0105] Although the average inclination angle of the inclined surface 422 is not particularly limited, it is preferably 15° to 80°, more preferably 25° to 70°, relative to the central axis J1 of rotation of the shaft 51. Within this range, the coarse fragments M2 can be guided to the communication port 421 more smoothly.

[0106] The partition 42 has an inclined surface 422 which is located on the first space S1 side and is inclined so as to have the communication port 421 at the lowest part. Thus, the coarse fragments M2 in the first space S1 can be smoothly guided to the communication port 421.

[0107] The humidified air exhaust space S3 is a space that communicates the second space S2 and the exhaust port 413. The humidified air exhaust space S3 includes a space formed by the flow path forming member 43. The flow path forming member 43 is a member that connects the through holes 414 and 415 formed on the storage tank 41. The through hole 414 is formed on the second space S2 side of the side wall of the storage tank 41, that is, below the partition 42, and the through hole 415 is formed above the first space S1 of the side wall of the storage tank 41. That is, the through hole 414 and the through hole 415 are formed in the side wall of the storage tank 41 in this order from the bottom.

[0108] The flow channel forming member 43 is a member that airtightly covers the through holes 414, 415 and the portion between the through holes 414, 415 in the outer peripheral portion of the storage tank 41. The humidified air WA discharged to the second space S2 through the humidifying section 6 described later is provided to humidify the coarse fragments M2 stirred in the stirring section 5, but a part of the humidified air WA intrudes into the first space S1 through the connecting port 421, thereby humidifying the coarse fragments M2 in the first space S1 to some extent. In addition, the remaining part of the humidified air WA discharged to the second space S2 passes through the humidified air exhaust space S3 from the second space S2, further crosses the upper part of the first space S1 from left to right, and is discharged to the outside of the storage tank 41 from the exhaust port 413.

[0109] It is preferable that the remaining part of the humidified air WA flows so as to avoid the area directly below the introduction port 411 when the remaining part of the humidified air WA crosses the first space S1 . To achieve this state, an auxiliary flow path or a detour flow path (not shown) may be provided at the upper portion of the storage tank 41 .

[0110] The remaining humidified air WA may be discharged to the outside of the storage tank 41 without crossing the first space S1. In this case, the exhaust port 413 may be provided at the upper end of the flow path forming member 43, that is, at the top surface of the storage tank 41.

[0111] In this embodiment, the humidified air exhaust space S3 is also connected to the first space S1 at the upper side. Therefore, the remaining humidified air WA transferred from the second space S2 to the first space S1 through the communication port 421 is transferred from the first space S1 to the humidified air exhaust space S3 and discharged from the exhaust port 413.

[0112] like Figure 2 , Figure 3 as well as Figure 4 As shown, the stirring portion 5 includes a shaft 51 , a first stirring member 52 , and a second stirring member 53 (stirring member).

[0113] The shaft 51 starts from the bottom of the storage tank 41 and Figure 2 The shaft 51 is a rod-shaped shaft extending in the vertical direction. The shaft 51 rotates around the central axis J1 along the vertical direction. The lower end of the shaft 51 is connected to the motor M. The motor M rotates the shaft 51. In this embodiment, the motor M rotates in one direction, that is, Figure 2 The shaft 51 rotates in the direction of the arrow mark. Figure 3 as well as Figure 4 However, the structure is not limited to this structure, and the shaft 51 may be a structure that can rotate in either the forward or reverse direction.

[0114] A reducer may also be provided between the motor M and the shaft 51. Figure 1 The control unit 281 of the control device 28 shown is electrically connected, and the energization condition is controlled by the control unit 281. As a result, the shaft 51 rotates at a predetermined timing and a predetermined rotation speed.

[0115] like Figure 2 As shown, the shaft 51 passes through the communication port 421 of the partition 42. The upper end of the shaft 51 is located in the first space S1. A first stirring member 52 is provided at the outer periphery of the shaft 51 in the first space S1, and a second stirring member 53 is provided at the outer periphery of the shaft 51 in the second space S2.

[0116] like Figure 3As shown, the first stirring member 52 stirs the coarse fragments M2 in the first space S1 by rotating together with the shaft 51. The first stirring member 52 is in the shape of a plate, particularly an elongated strip, with the circumferential direction of the shaft 51 being the thickness direction. A plurality of first stirring members 52 are arranged at equal intervals (at equal angle intervals), and four are arranged in the present embodiment. However, it is not limited to this structure, and the first stirring member 52 may also be in the shape of a rod. In addition, the number of arrangements is not limited to four, and may also be one to three, or more than five. In addition, each first stirring member 52 may also be arranged at unequal intervals.

[0117] In the first space S1 , the coarse fragments M2 are stirred by the first stirring member 52 , thereby disintegrating the coarse fragments M2 and untangling the fragments. The coarse fragments M2 thus dispersed can be smoothly transferred to the second space S2 through the communication port 421 .

[0118] like Figure 4 As shown, the second stirring member 53 rotates together with the shaft 51, thereby stirring the coarse fragments M2 in the second space S2. The second stirring member 53 is arranged at a position close to the bottom side of the storage tank 41. The second stirring member 53 is in a plate-like shape, particularly in a strip-like shape, with the circumferential direction of the shaft 51 being the thickness direction. A plurality of second stirring members 53 are arranged at equal intervals (at equal angle intervals), and four are arranged in the present embodiment. However, it is not limited to this structure, and the second stirring member 53 may also be in a rod-like shape. In addition, the number of arrangements is not limited to four, and may also be one to three, or more than five. In addition, each second stirring member 53 may also be arranged at non-equal intervals.

[0119] In the second space S2, the second stirring member 53 is rotated around the central axis J1 to stir the coarse fragments M2, so that the coarse fragments M2 can be disassembled and the coils can be unwound one by one. Figure 4 as well as Figure 6 As shown, the second stirring member 53 can push the coarse fragments M2 forward in the rotation direction of the shaft 51. Thus, the coarse fragments M2 can be smoothly discharged from the discharge port 412.

[0120] In addition, in the present embodiment, the first stirring member 52 and the second stirring member 53 can be integrally rotated to perform stirring by the rotation of the shaft 51. Thus, the discharge of the coarse fragments M2 from the second space S2 by the second stirring member 53 and the transfer (replenishment) of the coarse fragments M2 from the second space S2 by the first stirring member 52 can be integrally performed by one power mechanism.

[0121] However, the present invention is not limited to this structure, and the first stirring member 52 and the second stirring member 53 may be configured to rotate independently.

[0122] The coarse-chip supply device 3 includes a partition 42 that partitions the internal space S0 into a first space S1 and a second space S2 located below the first space S1. A second stirring member 53 as a stirring member is provided in the second space S2 to stir the coarse chips M2 transferred from the first space S1 to the second space S2. Thus, the coarse chips M2 in the second space S2 can be smoothly discharged from the coarse-chip supply device 3 in a state where the coils of the coarse chips M2 are disassembled.

[0123] The second stirring member 53 as a stirring member is provided at the bottom of the storage tank 41 and rotates in one direction around the central axis J1 along the vertical direction. Thus, the coarse fragments M2 in the internal space S0, especially in the second space S2, can be stably discharged from the coarse fragment supply device 3.

[0124] The stirring section 5 has a plurality of (four in this embodiment) second stirring members 53 which are arranged at the outer periphery of the shaft 51 in the second space S2 and rotate together with the shaft 51. Thus, the coarse fragments M2 in the second space S2 can be stirred well.

[0125] The humidifying unit 6 includes a humidified air supply source 61, a humidified air outlet 62, a humidified air supply passage 63, an air supply fan 64, and a valve 65. The humidifying unit 6 is a component for humidifying the coarse pieces M2 in the internal space S0, especially the coarse pieces M2 in the second space S2. Thus, it is possible to prevent the coarse pieces M2 from being entangled with each other or from being attached to various places in the storage tank 41 due to static electricity. Therefore, while the coarse pieces M2 can be discharged smoothly and stably from the discharge port 412, subsequent processing, such as defibration processing and subsequent processes such as quantitative supply, can be appropriately and well performed.

[0126] In this way, the coarse-chip supply device 3 includes the humidifying unit 6, which humidifies the coarse chips M2 in the storage tank 41, especially the coarse chips M2 in the second space S2. As a result, the coarse chips M2 in the internal space S0, especially the coarse chips M2 in the second space S2, can be efficiently humidified. As a result, the coarse chips M2 can be effectively prevented from being entangled with each other or adhering to the inside of the device due to static electricity.

[0127] Figure 2The humidified air supply source 61 shown is a component for generating humidified air WA. The humidified air supply source 61 generates humidified air WA, for example, by a vaporization method or an ultrasonic method. When the power supply (main power supply, the same below) of the fiber structure manufacturing device 100 is set to the disconnected (OFF) state, the humidified air supply source 61 stops generating the humidified air WA, and when the power supply of the fiber structure manufacturing device 100 is set to the connected (ON) state, the humidified air supply source 61 starts generating the humidified air WA.

[0128] An air supply fan 64 and a valve 65 are provided in the middle of the humidified air supply passage 63. The air supply fan 64 supplies the humidified air WA toward the humidified air outlet 62, and the valve 65 adjusts the flow rate of the humidified air WA. The humidified air WA generated in the humidified air supply source 61 is transferred to each humidified air outlet 62 through the humidified air supply passage 63 by the operation of the air supply fan 64, and is discharged.

[0129] The air supply fan 64 is constituted by, for example, a blower, and the valve 65 is constituted by, for example, a solenoid valve whose opening degree is variable.

[0130] The humidified air supply source 61, the air supply fan 64 and the valve 65 are respectively connected to Figure 1 The control unit 281 of the control device 28 shown is electrically connected, and the energization condition is controlled by the control unit 281. Thus, the humidified air WA is discharged from the humidified air discharge port 62 at a predetermined timing, predetermined humidity, and predetermined flow rate, and is supplied to the coarse chips M2.

[0131] In addition, the humidifying unit 6 may be configured not to include either or both of the air supply fan 64 and the valve 65 .

[0132] The humidified air discharge port 62 is provided on the second stirring member 53, and discharges the humidified air WA toward the coarse pieces M2 being stirred by the second stirring member 53. More specifically, the humidified air discharge port 62 is provided on each of the four second stirring members 53. Thus, the humidified air WA can be uniformly supplied to the coarse pieces M2 being stirred by each of the second stirring members 53 without omission. Therefore, the coarse pieces M2 in the second space S2 can be uniformly, efficiently, and quickly humidified.

[0133] In particular, when the power of the fiber structure manufacturing apparatus 100 in the stopped state is turned on, it is necessary to quickly humidify the coarse pieces M2 in the dry state. In the coarse pieces supplying device 3, since the coarse pieces M2 can be directly humidified by the above-mentioned structure, the coarse pieces M2 can be humidified efficiently and quickly, and the humidified coarse pieces M2 can be quickly discharged. As a result, the production of the sheet S can be started quickly after the power of the fiber structure manufacturing apparatus 100 is turned on, and the quality of the produced sheet S is also improved.

[0134] like Figure 4 as well as Figure 6 As shown, each second stirring member 53 uses the surface in front of the rotation direction to push the coarse fragments M2 to stir. The humidified air discharge port 62 is provided at the rear side of each second stirring member 53 in the rotation direction, and discharges the humidified air WA toward the coarse fragments M2 pushed by the second stirring member 53 adjacent to the rear in the rotation direction. Thus, while preventing the humidified air discharge port 62 from being blocked by the coarse fragments M2, the humidified air WA can be supplied to the coarse fragments M2 being stirred and disassembled, thereby humidifying. Therefore, the coarse fragments M2 can be humidified more uniformly and without discrimination.

[0135] In this way, the humidified air outlet 62 is arranged at the rear side of the second stirring member 53 as the stirring member in the rotation direction. As a result, the coarse fragments M2 can be humidified more uniformly and indiscriminately. In addition, the location of the humidified air outlet 62 is not limited to the structure shown in the figure, for example, it can also be arranged at the front side of the second stirring member 53 in the rotation direction, and can also be arranged at the upper surface side of the second stirring member 53.

[0136] In addition, if Figure 6 As shown, a mesh member 621 is provided as a filter to prevent the intrusion of the coarse fragments M2 on the humidified air outlet 62. Thus, although the humidified air WA may be discharged from the humidified air outlet 62, the coarse fragments M2 can be prevented or suppressed from entering the inside of the second stirring member 53 through the humidified air outlet 62.

[0137] like Figure 2 as well as Figure 5 As shown, the humidified air WA generated in the humidified air supply source 61 is transferred to the humidified air discharge port 62 through the humidified air supply passage 63 , and is discharged toward the coarse fragments M2 being agitated by the second agitating member 53 .

[0138] The humidified air supply source 61 and the storage tank 41 are connected by the transfer pipe 44. The inner cavity 441 of the transfer pipe 44 constitutes a part of the humidified air supply passage 63. One end of the transfer pipe 44 is connected to the humidified air supply source 61, and the other end is connected to the through hole 416 provided at the bottom of the storage tank 41.

[0139] In addition, if Figure 5 As shown, the shaft 51 has an inner cavity 511. The inner cavity 511 is connected to the through hole 416. In addition, each second stirring member 53 has an inner cavity 531 connected to the inner cavity 511 of the shaft 51. The inner cavity 531 is connected to the humidified air discharge port 62. As a result, the humidified air WA passes through the inner cavity 441 of the transfer pipe 44, the inner cavity 511 of the shaft 51, and the inner cavity 531 of each second stirring member 53 in sequence, and is discharged from the humidified air discharge port 62. That is, the humidified air supply channel 63 is composed of the inner cavity 441 of the transfer pipe 44, the inner cavity 511 of the shaft 51, and the inner cavity 531 of the second stirring member 53.

[0140] As described above, the stirring section 5 includes the shaft 51 and the second stirring members 53 as a plurality of stirring members arranged at equal intervals on the outer periphery of the shaft 51, and the humidified air supply passage 63 is provided inside the shaft 51 and inside the second stirring member 53. In other words, the structural elements of the humidifying section 6 partially overlap with the structural elements of the stirring section 5. Thus, the device structure can be made relatively simple.

[0141] In addition, in the present invention, it is obvious that the humidified air supply passage 63 may be provided independently of the shaft 51 .

[0142] In addition, if Figure 5 As shown in FIG. 5 , a backflow prevention wall 512 is provided in the inner cavity 511 of the shaft 51. The backflow prevention wall 512 has a function of preventing the coarse fragments M2 from clogging the through hole 416 even if the coarse fragments M2 enter the shaft 51. The backflow prevention wall 512 is in the shape of a cylinder provided at the outer side of the through hole 416. The backflow prevention wall 512 is in the shape of a truncated cone whose outer diameter and inner diameter decrease as it goes upward. Thus, the coarse fragments M2 can be more reliably prevented from clogging the through hole 416.

[0143] As described above, the coarse fragment supplying device 3 includes: a storage tank 41 that stores the coarse fragments M2 containing fibers and has a first space S1 and a second space S2 located below the first space S1; an introduction port 411 that communicates with the first space S1 and introduces the coarse fragments M2 into the first space S1; a partition 42 that partitions the storage tank 41 into the first space S1 and the second space S2 and has a communication port 421 that communicates the first space S1 with the second space S2; a regulating portion 7 that regulates the amount of coarse fragments M2 transferred from the first space S1 to the second space S2 via the communication port 421; a stirring portion 5 that stirs the coarse fragments M2 in the second space S2; and a discharge port 412 that discharges the coarse fragments M2 stirred by the stirring portion 5 from the second space S2. Thus, the coarse fragments M2 can be stirred, discharged, humidified, and other processes can be performed well and quickly.

[0144] In addition, the fiber structure manufacturing device 100 includes: a coarse fragment supply device 3; a defibration device 13 as a defibration unit, which defibrates the coarse fragments M2 supplied from the coarse fragment supply device 3 to generate a defibrated material M3; a second web forming unit 19, which is a stacking unit that stacks the defibrated material M3 to generate a second web M8 as a stacked material; and a forming unit 20, which forms the second web M8. Thus, the fiber structure (sheet S) can be manufactured well and quickly using the processed coarse fragments M2 in the coarse fragment supply device 3. Therefore, the quality of the fiber structure (sheet S) can be improved, thereby improving the yield rate.

[0145] The adjustment part 7 includes a shaft 51 that is inserted through the communication port 421 and rotates, and a plurality of first stirring members 52 that are arranged at the outer periphery of the shaft 51 in the first space S1 and rotate together with the shaft 51. Thus, the amount of coarse fragments M2 transferred from the first space S1 to the second space S2 can be adjusted by a simple structure in which the shaft 51 rotates.

[0146] In addition, in the present embodiment, the humidified air outlet 62 of the humidifying unit 6 is provided on the second stirring member 53, but the present invention is not limited thereto, and the humidified air outlet 62 may also be provided at a location other than the second stirring member 53, such as the side surface of the shaft 51, the first stirring member 52, the side wall of the storage tank 41, etc. In addition, the humidifying unit 6 may not be provided on the coarse fragment supplying device 3 itself.

[0147] like Figure 2 as well as Figure 3As shown, the regulating part 7 is composed of a shaft 51 and a first stirring member 52. That is, the shaft 51 of the stirring part 5 and the first stirring member 52 also belong to the regulating part 7. As described above, the coarse fragments M2 can be disassembled by rotating the first stirring member 52 to unwind the coils one by one. Therefore, the scattered coarse fragments M2 can be smoothly transferred to the second space S2 via the connecting port 421. In addition, the transfer amount per unit time of the coarse fragments M2 transferred to the second space S2 via the connecting port 421 can be adjusted according to the rotation speed of the first stirring member 52.

[0148] If the rotation speed of the first stirring member 52 is increased, the amount of the coarse fragments M2 transferred will increase, and if the rotation speed of the first stirring member 52 is decreased, the amount of the coarse fragments M2 transferred will decrease. In addition, the rotation speed of the first stirring member 52 may be configured to be variable during the rotation process, or may be configured to always rotate at a preset rotation speed.

[0149] In particular, by using the partition 42 to divide the internal space S0 into the first space S1 and the second space S2, the coarse fragments M2 can be distributed to the first space S1 and the second space S2 and stored. Thus, it is possible to set a structure in which the coarse fragments M2 just before being discharged, that is, the coarse fragments M2 in the second space S2, are stirred and discharged. Therefore, compared with a structure in which the entire amount of the coarse fragments M2 in the internal space S0 is stirred, stirring can be performed uniformly, well, and quickly. As a result, the coarse fragments M2 that have been properly stirred and moistened can be quickly discharged and supplied to the subsequent process.

[0150] Furthermore, when the power of the fiber structure manufacturing apparatus 100 in the stopped state is turned on and the coarse pieces M2 in the dry state are humidified, the coarse pieces M2 in the second space S2 can be humidified preferentially. That is, a relatively small amount of coarse pieces M2 can be humidified and discharged from the storage tank 41. As a result, the coarse pieces M2 can be humidified more quickly and well. In this way, by using the partition 42 to divide the internal space S0 into the first space S1 and the second space S2, the stirring, discharging, humidification and other processes can be uniformly, well and quickly performed.

[0151] In addition, in the present embodiment, a structure is adopted in which the first stirring member 52 and the second stirring member 53 are rotated synchronously by the rotation of the shaft 51. Thus, the coarse fragments M2 in the second space S2 can be discharged from the discharge port 412 and the coarse fragments M2 can be transferred from the first space S1 to the second space S2 as a whole. Therefore, the amount of the coarse fragments M2 in the second space S2 can be maintained at a desired amount. As a result, the coarse fragments M2 can be humidified and discharged stably.

[0152] In addition, although in the present embodiment, the internal space S0 of the storage tank 41 includes the first space S1 and the second space S2 partitioned by the partition 42, the present invention is not limited thereto, and the storage tank 41 may also have a structure having one internal space S0. That is, the coarse fragment supplying device 3 may also have a structure without the partition 42 or a structure without the adjusting portion 7.

[0153] The above is a description of the illustrated embodiment of the coarse fragment supply device and the fiber structure manufacturing device of the present invention, but the present invention is not limited to the above content, and each part constituting the coarse fragment supply device and the fiber structure manufacturing device can be replaced with an arbitrary structure that can perform the same function. In addition, an arbitrary structure can also be added to the coarse fragment supply device and the fiber structure manufacturing device.

[0154] In addition, in the fiber structure manufacturing apparatus, the raw material supply unit 11 and the crushing unit 12 may be omitted.

[0155] Explanation of symbols

[0156] 3…rough-chip supply device; 4…storage unit; 5…stirring unit; 6…humidification unit; 7…regulating unit; 11…raw material supply unit; 12…rough-crushing unit; 13…fibrillation device; 14…screening unit; 15…first web-sheet forming unit; 16…subdividing unit; 17…mixing unit; 18…dispersing unit; 19…second web-sheet forming unit; 20…forming unit; 21…cutting unit; 22…material preparation unit; 27…recovery unit; 28…control device; 41…storage tank; 42…partitioning unit; 43…flow channel forming member; 44…transfer pipe; 51…shaft; 52…first stirring member; 53…second stirring member; 61…humidified air supply source ; 62…humidified air outlet; 63…humidified air supply passage; 64…air supply fan; 65…valve; 100…fiber structure manufacturing device; 121…coarse crushing blade; 122…chute; 141…roller; 142…housing; 151…mesh belt; 152…installation roller; 153…suction section; 161…rotating blade; 162…housing; 170…housing; 171…additive supply section; 172…pipe; 173…blower; 174…screw feeder; 181…roller; 182…housing; 191…mesh belt; 192…installation roller; 193…suction section; 201…pressing section; 2 02…heating unit; 203…calendering roller; 204…heating roller; 211…first shear; 212…second shear; 231…humidifying unit; 232…humidifying unit; 233…humidifying unit; 234…humidifying unit; 235…humidifying unit; 236…humidifying unit; 241…tube; 242…tube; 243…tube; 244…tube; 245…tube; 246…tube; 261…blower; 262…blower; 263…blower; 281…control unit; 282…storage unit; 283…communication unit; 411…inlet; 412…exhaust outlet; 413…exhaust outlet; 414…through hole; 415… through hole; 416…through hole; 421…connecting port; 422…inclined surface; 441…inner cavity; 511…inner cavity; 512…backflow prevention wall; 531…inner cavity; 621…grid component; J1…central axis; M…motor; M1…raw material; M2…coarse fragments; M3…defibrated material; M4-1…first screened material; M4-2…second screened material; M5…first sheet; M6…finely divided material; M7…mixture; M8…second sheet; P1…adhesive; S…sheet; S0…inner space; S1…first space; S2…second space; S3…humidified air exhaust space; WA…humidified air.

Claims

1. A coarse fragment supply device, characterized in that: have: A retention tank for retaining the coarse fragments including the fibers; a partition portion that is necked in the storage tank to partition the storage tank into a first space and a second space located below the first space; an adjusting section for adjusting a transfer amount of the coarse fragments transferred from the first space to the second space; a stirring portion for stirring the coarse fragments in the second space; A discharge port discharges the coarse fragments from the second space.

2. The coarse fragment supply device according to claim 1, wherein: The adjusting portion includes a shaft that rotates and a first stirring member that is arranged at an outer peripheral portion of the shaft in the first space and rotates together with the shaft.

3. The coarse fragment supply device according to claim 2, wherein: The stirring portion includes a second stirring member that is disposed at an outer peripheral portion of the shaft in the second space and rotates together with the shaft.

4. The coarse fragment supply device according to any one of claims 1 to 3, wherein: The partition part communicates the first space with the second space by using a hole whose cross-sectional area on the first space side is larger than that on the second space side.

5. The coarse fragment supply device according to any one of claims 1 to 3, wherein: A humidifying unit is provided for humidifying the coarse fragments in the storage tank.

6. The coarse fragment supply device according to any one of claims 1 to 3, wherein: The discharge port is provided at the bottom of the retention tank.

7. A fiber structure manufacturing device, characterized in that: have: The coarse fragment supply device according to any one of claims 1 to 3; a defibration section for defibration of the coarse fragments supplied from the coarse fragment supplying device to produce defibrated products; an accumulation section for stacking the defibrated material to form an accumulation; A shaping unit is configured to shape the deposit.

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