WO2018043216A1

WO2018043216A1 - Conveying device and sheet manufacturing device

Info

Publication number: WO2018043216A1
Application number: PCT/JP2017/029985
Authority: WO
Inventors: 奈緒子尾曲; 山田　健太郎; 昌一永松; 中村　昌英
Original assignee: セイコーエプソン株式会社
Priority date: 2016-08-31
Filing date: 2017-08-22
Publication date: 2018-03-08
Also published as: JPWO2018043216A1; JP7028173B2

Abstract

Provided is a conveying device that suppresses airflow turbulence and can smoothly convey an object to be conveyed. The conveying device conveys, using an airflow, an object to be conveyed that includes at least one out of a sheet, a fiber, and a powder. The conveying device comprises: a conveyance tube for conveying the object to be conveyed; an airflow generating unit for generating an airflow inside the conveyance tube; and a guidance part for guiding the object to be conveyed to an introduction opening provided in the conveyance tube. The guidance part includes a first guidance part having a shape that tapers toward the conveyance tube, and a second guidance part for connecting the first guidance part and the conveyance tube. The first guidance part has a conveyance-tube-side end portion of a first side surface, which is on the downstream side in the flow direction of the airflow, such end portion being located upstream, in the flow direction of the airflow, of a second side surface which is on the downstream side in the airflow flow direction of the second guidance part. The second side surface of the second guidance part has a portion that faces toward the upstream side in the flow direction of the airflow and extends toward the first side surface of the first guidance part from the conveyance tube side.

Description

Conveying device, sheet manufacturing device

The present invention relates to a conveying apparatus and a sheet manufacturing apparatus.

2. Description of the Related Art Conventionally, there has been disclosed an apparatus that finely pulverizes an ear generated by slitting a web with a slitting device, narrows it with an auxiliary slitting device, and sends it from a suction port to a pulverizer through an air feeding tube (for example, patent document). 1).

JP-A-10-86097

However, in the suction port of the air pipe where the narrow ear is introduced as in the above device, the air flow is likely to be disturbed, and the narrow ear may stay near the suction port of the wind pipe. .

The present invention has been made to solve at least a part of the problems described above, and can be realized as the following forms or application examples.

Application Example 1 A conveyance device according to this application example is a conveyance device that conveys a conveyance object including at least one of a sheet piece, a fiber, and powder by an air current, and conveys the conveyance object. A transport pipe, an air flow generating section for generating an air flow in the transport pipe, and a guide section for guiding the transported object to an inlet provided in the transport pipe, A taper-shaped first guide part toward the transport pipe (the introduction port), and a second guide part for connecting the first guide part and the transport pipe (the introduction port). The first guide portion is configured such that an end portion (end surface) on the transport pipe side of the first side surface (side wall) on the downstream side in the flow direction of the airflow (conveyance direction of the conveyed product) is the second guide portion. Located on the upstream side in the air flow direction than the second side surface (side wall) on the downstream side in the air flow direction, The second side surface of the second guide portion has a portion extending from the transport pipe side toward the upstream side in the airflow direction and extending toward the first side surface of the first guide portion. To do.

Application Example 2 A conveyance device according to this application example is a conveyance device that conveys a conveyance object including at least one of a sheet piece, a fiber, and powder by an air current, and conveys the conveyance object. A transport pipe, an air flow generating section for generating an air flow in the transport pipe, and a guide section for guiding the transported object to an inlet provided in the transport pipe, A taper-shaped first guide part toward the transport pipe (the introduction port), and a second guide part for connecting the first guide part and the transport pipe (the introduction port). Then, the first side surface (side wall) on the downstream side in the flow direction of the air flow (the conveyance direction of the conveyed product) of the first guide portion, the second side surface on the downstream side in the flow direction of the air flow of the second guide portion ( Side wall) is connected, and the first side surface is connected to the transport pipe side from the connection portion with the second side surface. Having out portion, characterized in that.

Application Example 3 A conveyance device according to this application example is a conveyance device that conveys a conveyance object including at least one of a sheet piece, a fiber, and powder by an air current, and conveys the conveyance object. A transport pipe, an air flow generating section for generating an air flow in the transport pipe, and a guide section for guiding the transported object to an inlet provided in the transport pipe, A taper-shaped first guide part toward the transport pipe (the introduction port), and a second guide part for connecting the first guide part and the transport pipe (the introduction port). The second guide portion has a second side surface (side wall) on the downstream side in the flow direction of the airflow (conveyance direction of the conveyed product), and one end portion on the downstream side in the flow direction of the airflow in the first guide portion. It is connected to the end of the first side surface (side wall) on the transport pipe side, and the other end of the second side surface is Is connected to the tube (inlet), said second side has a portion which is located above the said end portion of said first guide portion, characterized in that.

With the above configuration, it is possible to suppress the disturbance of the airflow in the vicinity of the inlet of the transport pipe and stably introduce the transported material from the guide portion to the transport pipe.

Application Example 4 In the transfer device according to the application example, the airflow has a speed difference in a direction perpendicular to the flow direction of the airflow in the transfer pipe, and the introduction port has a low speed of the airflow. It is provided in the side.
With this configuration, the airflow in the transport pipe can be stabilized.

Application Example 5 In the transfer device according to the application example described above, the transfer pipe includes a first transfer pipe having a curved portion, and a straight second connected to the first transfer pipe on the downstream side in the flow direction of the airflow. The introduction port of the conveyance pipe is formed over a part of the first conveyance pipe and a part of the second conveyance pipe.
With this configuration, turbulence in the airflow in the vicinity of the inlet can be suppressed.

Application Example 6 In the transfer apparatus according to the application example, the second transfer pipe is disposed below the first side surface of the first guide portion in the vertical direction.
With this configuration, turbulence in the airflow in the vicinity of the inlet can be suppressed.

[Application Example 7] A conveying apparatus according to this application example includes a conveying pipe for conveying a conveying object including at least one of a sheet piece, a fiber, and powder, and the conveying object is introduced into the conveying pipe. An introduction port is provided, and includes a guide unit that guides the conveyed product toward the introduction port, and an airflow generation unit that generates an airflow in the transfer tube, and is introduced into the transfer tube by the airflow. A transport device for transporting the transported object, wherein the guide unit has a downstream portion corresponding to a downstream side of the airflow, and an upstream inner surface of the guide portion toward the upstream side of the airflow. The distance in the vertical direction between the reference horizontal plane set below the wall part and the tip of the wall part upstream of the airflow is the first distance. The downstream side of the air flow from the tip of the wall Is characterized in that there is a long second distance have a portion than the first distance.

Conventionally, there is a tendency that the airflow tends to be turbulent on the downstream side of the airflow at the inlet of the transport pipe, but according to the above configuration, the wall portion is provided above the downstream portion of the airflow at the inlet. Thereby, the turbulence of the airflow at the introduction port is suppressed, and the conveyed product introduced from the introduction port to the conveyance tube can be smoothly conveyed.

[Application Example 8] A conveyance device according to this application example includes a conveyance pipe for conveying a conveyance object including at least one of a sheet piece, a fiber, and powder, and the conveyance object is introduced into the conveyance pipe. An introduction port is provided, and includes a guide unit that guides the conveyed product toward the introduction port, and an airflow generation unit that generates an airflow in the transfer tube, and is introduced into the transfer tube by the airflow. A transport device for transporting the transported object, wherein the guide unit has a downstream portion corresponding to a downstream side of the airflow, and an upstream inner surface of the guide portion toward the upstream side of the airflow. A first imaginary line along a surface of the wall portion facing the introduction port, and a guide portion connected to the downstream side of the airflow of the introduction port. The second imaginary line along the inner wall surface intersects.

[Application Example 9] A conveying device according to this application example includes a conveying pipe for conveying a conveying object including at least one of a sheet piece, a fiber, and powder, and the conveying object is introduced into the conveying pipe. An introduction port is provided, and includes a guide unit that guides the conveyed product toward the introduction port, and an airflow generation unit that generates an airflow in the transfer tube, and is introduced into the transfer tube by the airflow. A conveying device for conveying the conveyed product, wherein an inner wall surface of the guide portion connected to the downstream side of the airflow at the inlet is above a downstream portion corresponding to the downstream side of the airflow at the inlet. It has the space formed by these.

Conventionally, the air flow tends to be turbulent on the downstream side of the air flow at the inlet of the transport pipe. However, according to the above configuration, a space by the guide unit is provided above the downstream portion of the air flow at the inlet. Thereby, the turbulence of the airflow at the introduction port is suppressed, and the conveyed product introduced from the introduction port to the conveyance tube can be smoothly conveyed.

Application Example 10 In the transfer device according to the application example, the transfer pipe is provided on the upstream side of the air flow, and has a first transfer pipe having a curved portion and a downstream side of the air flow of the first transfer pipe. The inlet is formed in the part corresponding to the position containing the said 1st conveyance pipe and the said 2nd conveyance pipe.

According to this configuration, the airflow in the transport pipe flows from the first transport pipe having the curved portion to the straight second transport pipe. Thereby, the airflow in a conveyance pipe flows smoothly, and the stay of the conveyed product introduced into the conveyance pipe from the inlet can be suppressed.

Application Example 11 In the transfer device according to the application example described above, the second transfer pipe is disposed below a front end portion of the wall portion on the upstream side of the airflow or below the space. And

According to this configuration, the straight second transport pipe is disposed below the front end portion of the wall portion on the upstream side of the airflow. Thereby, the turbulence of the airflow at the introduction port is suppressed, and the conveyed product introduced from the introduction port to the conveyance tube can be smoothly conveyed.

[Application Example 12] A sheet manufacturing apparatus according to this application example includes the conveyance device described above.

According to this configuration, the transported object introduced into the transport pipe from the introduction port is transported smoothly. For this reason, a highly productive sheet manufacturing apparatus can be provided.

Schematic which shows the structure of the sheet manufacturing apparatus concerning 1st Embodiment. The perspective view which shows the structure of the conveying apparatus concerning 1st Embodiment. The perspective view which shows the structure of the conveying apparatus concerning 1st Embodiment. Sectional drawing which shows the structure of the conveying apparatus concerning 1st Embodiment. The partial top view which shows the structure of the conveying apparatus concerning 1st Embodiment. Sectional drawing which shows the structure of the conveying apparatus concerning 2nd Embodiment. Sectional drawing which shows the structure of the conveying apparatus concerning 3rd Embodiment.

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

(First embodiment)
First, the configuration of the sheet manufacturing apparatus will be described. FIG. 1 is a schematic diagram illustrating a configuration of a sheet manufacturing apparatus.

As shown in FIG. 1, the sheet manufacturing apparatus 100 includes a supply unit 10, a manufacturing unit 102, and a control unit 104. The manufacturing unit 102 manufactures the sheet S. The manufacturing unit 102 includes a crushing unit 12, a defibrating unit 20, a sorting unit 40, a first web forming unit 45, a rotating body 49, a mixing unit 50, a depositing unit 60, and a second web forming unit. 70, a sheet forming unit 80, and a cutting unit 90.

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

The crushing unit 12 cuts the raw material supplied by the supply unit 10 in the air (in the air) or the like into pieces. The shape and size of the strip is, for example, a strip of several cm square. The crushing unit 12 includes, for example, a crushing blade 14 and a shooter (hopper) 16. The crushing unit 12 can cut the input raw material with the crushing blade 14. As the crushing part 12, a shredder is used, for example. The raw material cut by the crushing blade 14 is received by the shooter 16 and then transferred (conveyed) to the defibrating unit 20 via the conveyance pipe 140 (conveyance device 110).

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

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

The defibrating unit 20 performs defibration by a dry method. Here, performing a process such as defibration in the air (in the air), not in the liquid, is called dry. As the defibrating unit 20, an impeller mill is used in the present embodiment. The defibrating unit 20 has a function of generating an air flow that sucks the raw material and discharges the defibrated material. As a result, the defibrating unit 20 can suck the raw material together with the airflow from the introduction port 22 with the airflow generated by itself, defibrate, and transport the defibrated material to the discharge port 24. The defibrated material that has passed through the defibrating unit 20 is transferred to the sorting unit 40 via the tube 3. In addition, the airflow for conveying a defibrated material from the defibrating unit 20 to the sorting unit 40 may use an airflow generated by the defibrating unit 20, or an airflow generation device such as a blower is provided, May be used.

The sorting unit 40 introduces the defibrated material defibrated by the defibrating unit 20 from the introduction port 42 and sorts the defibrated material according to the length of the fiber. The sorting unit 40 includes a drum unit 41 and a housing unit 43 that accommodates the drum unit 41. As the drum part 41, for example, a sieve is used. The drum portion 41 has a net (filter, screen), fibers or particles smaller than the mesh size of the mesh (one passing through the mesh, the first selection), and fibers larger than the mesh size of the mesh. Undefibrated pieces and lumps (those that do not pass through the net, second sort) can be separated. For example, the first selection is transferred to the mixing unit 50 via the pipe 7. The second selected product is returned to the crushing unit 12 from the discharge port 44 through the pipe 8. Specifically, the drum part 41 is a cylindrical sieve that is rotationally driven by a motor. As the net of the drum portion 41, for example, a metal net, an expanded metal obtained by extending a cut metal plate, or a punching metal in which a hole is formed in the metal plate by a press machine or the like is used.

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

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

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

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

The rotating body 49 is provided in the vicinity of the first web forming portion 45. In the illustrated example, the rotating body 49 is provided in the vicinity of the stretching roller 47a located on the downstream side in the path of the web V (next to the stretching roller 47a). The rotating body 49 is provided at a position where the protrusion 49b can come into contact with the web V and not in contact with the mesh belt 46 on which the web V is deposited. Thereby, it is possible to suppress the mesh belt 46 from being worn (damaged) by the protrusion 49b. The shortest distance between the protrusion 49b and the mesh belt 46 is, for example, not less than 0.05 mm and not more than 0.5 mm. This is the distance at which the web V can be cut without the mesh belt 46 being damaged.

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

In the mixing unit 50, an air flow is generated by the blower 56, and the first selection product and the additive can be mixed and conveyed in the tube 54. In addition, the mechanism which mixes a 1st selection material and an additive is not specifically limited, It may stir with the blade | wing which rotates at high speed, and uses rotation of a container like a V-type mixer. There may be.

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

The resin supplied from the additive supply unit 52 is a thermoplastic resin or a thermosetting resin. For example, AS resin, ABS resin, polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylic resin, polyester resin, polyethylene terephthalate, Polyphenylene ether, polybutylene terephthalate, nylon, polyamide, polycarbonate, polyacetal, polyphenylene sulfide, polyether ether ketone, and the like. These resins may be used alone or in combination. The additive supplied from the additive supply unit 52 may be fibrous or powdery.

In addition to the resin that binds the fibers, the additive supplied from the additive supply unit 52 includes a colorant for coloring the fibers, a fiber agglomeration, and a resin, depending on the type of sheet to be manufactured. An agglomeration inhibitor for suppressing agglomeration of the resin and a flame retardant for making the fiber difficult to burn may be included. The mixture (mixture of the first selection product and the additive) that has passed through the mixing unit 50 is transferred to the deposition unit 60 via the pipe 54.

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

The accumulation unit 60 includes a drum unit 61 and a housing unit 63 that accommodates the drum unit 61. As the drum part 61, a rotating cylindrical sieve is used. The drum unit 61 has a net, and drops fibers or particles (those that pass through the net) included in the mixture that has passed through the mixing unit 50 that are smaller than the mesh opening size. The configuration of the drum unit 61 is the same as the configuration of the drum unit 41, for example.

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

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

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

The suction mechanism 76 is provided below the mesh belt 72 (on the side opposite to the accumulation unit 60 side). The suction mechanism 76 can generate an air flow directed downward (air flow directed from the accumulation unit 60 toward the mesh belt 72). By the suction mechanism 76, the mixture dispersed in the air by the deposition unit 60 can be sucked onto the mesh belt 72. Thereby, the discharge speed from the deposition part 60 can be increased. Furthermore, the suction mechanism 76 can form a downflow in the dropping path of the mixture, and can prevent the defibrated material and additives from being entangled during the dropping.

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

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

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

The sheet forming unit 80 includes a pressurizing unit 82 that pressurizes the web W, and a heating unit 84 that heats the web W pressed by the pressurizing unit 82. The pressurizing unit 82 includes a calendar roller pair 85 and applies pressure to the web W. The web W is pressed to reduce its thickness, and the density of the web W is increased. As the heating unit 84, for example, a heating roller (heater roller), a hot press molding machine, a hot plate, a hot air blower, an infrared heater, or a flash fixing device is used. In the illustrated example, the heating unit 84 includes a heating roller pair 86. By configuring the heating unit 84 as the heating roller pair 86, the sheet S is formed while the web W is continuously conveyed as compared to the case where the heating unit 84 is configured as a plate-like pressing device (flat plate pressing device). be able to. Here, the calendar roller pair 85 (pressing unit 82) can apply a pressure higher than the pressure applied to the web W by the heating roller pair 86 (heating unit 84) to the web W. The number of calendar roller pairs 85 and heating roller pairs 86 is not particularly limited.

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

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

In the sheet manufacturing apparatus 100, the defibrated material that has passed through the defibrating unit 20 may be transferred to a classifying unit (not shown) via the pipe 3. Then, the classified product classified in the classification unit may be conveyed to the sorting unit 40. The classifying unit classifies the defibrated material that has passed through the defibrating unit 20. Specifically, the classifying unit separates and removes relatively small ones or low density ones (resin particles, colorants, additives, etc.) among the defibrated material. Thereby, the ratio for which the fiber which is a comparatively large or high density thing among defibrated materials can be raised. As the classification unit, for example, a cyclone, an elbow jet, an eddy classifier, or the like is used.

Next, the configuration of the transport device will be described. 2 and 3 are perspective views showing the configuration of the transfer device, FIG. 4 is a cross-sectional view showing the configuration of the transfer device, and FIG. 5 is a partial plan view showing the configuration of the transfer device.

As shown in FIGS. 2 to 4, the transfer device 110 includes a guide unit 111, a transfer tube 140, and an airflow generation unit 150. In the present embodiment, the conveyance object that has passed through the shooter 16 is introduced into the conveyance device 110. Note that the shooter 16 constitutes a part of the guide unit 111 that guides the transported object toward the introduction port 141 of the transport pipe 140. Therefore, the guide unit 111 in the present embodiment will be described as a configuration including the first guide unit 16 as the shooter 16 and the second guide unit 130 that connects the shooter 16 and the transport pipe 140 (introduction port 141). .

The airflow generation unit 150 generates an airflow α in the transport pipe 140. The transport device 110 transports the transported material introduced into the transport pipe 140 by the airflow α. In the present embodiment, the airflow generation unit 150 is provided on the downstream side in the flow direction of the airflow α from the inlet 141 of the transport pipe 140 (see FIG. 4). For example, a blower that sucks air is used as the airflow generation unit 150. The airflow generation unit 150 may be controlled by the control unit 104 (see FIG. 1). Although not shown, the airflow generation unit 150 may be provided in the tube 3 (see FIG. 1), or the defibrating unit 20 may function as the airflow generation unit 150. Further, due to the action of the airflow generation unit 150, an airflow is generated in the guide unit 111 from the roughing blade 14 side toward the introduction port 141 side. Here, in the following description, the upstream side and the downstream side in the flow direction of the air flow α may be referred to as the upstream side and the downstream side of the air flow α, or may simply be referred to as the upstream side and the downstream side. Since the conveyed product is conveyed in the conveying tube 140 by the air flow α, the flow direction of the air flow α can be said to be the conveying direction of the conveyed product.

The first guide unit 16 (shooter 16) guides the conveyed product that has passed through the crushing unit 12 (crushing blade 14) to the second guide unit 130. The conveyed product includes at least one of a sheet piece, a fiber, and a powder. The “sheet piece” is, for example, a fine piece cut by the roughing blade 14. “Fiber” is a defibrated material, for example, a defibrated material that has been defibrated by the defibrating unit 20 and returned to the crushing unit 12 through the tube 8. “Powder” is a powdered fiber or resin used as the raw material of the sheet S.

The first guide portion 16 is provided, for example, below the crushing blade 14 (below in the direction in which gravity acts). As shown in FIGS. 2 to 5, the first guide portion 16 has a tapered shape with a width that decreases from the crushing blade 14 side toward the second guide portion 130 side (introduction port 141 side of the transport pipe 140). Have. In addition, as shown in FIG. 5, the planar shape of the 1st guide part 16 may be a substantially rectangular shape. For example, as shown in FIG. 4, the first guide portion 16 is connected to a support portion 15 that supports the crushing blade 14.

The second guide unit 130 guides the transported material that has passed through the first guide unit 16 toward the inlet 141 provided in the transport pipe 140. The second guide part 130 is provided below the first guide part 16. As shown in FIG. 4, the second guide part 130 of the present embodiment has an inversely tapered shape that increases in width from the first guide part 16 side toward the transport pipe 140 (introduction port 141) side. . The planar shape of the second guide part 130 may be a substantially rectangular shape. By the second guide part 130, the connection between the transport pipe 140 and the first guide part 16 can be easily performed.

The second guide part 130 may be formed integrally with the first guide part 16, may be formed integrally with the transport pipe 140, or the first guide part 16 and the transport pipe 140. And may be formed integrally.

The 2nd guide part 130 has the 1st slope 132 and the 2nd slope 134, as shown in FIG. The first slope 132 and the second slope 134 are inner surfaces of the second guide part 130. The first slope 132 is provided on the upstream side of the airflow α in the transport pipe 140 with respect to the inlet 141. The second slope 134 is provided on the downstream side of the airflow α with respect to the first slope 132. The first slope 132 and the second slope 134 are inclined with respect to the direction of the airflow α.

The conveyance pipe 140 conveys the conveyed product that has passed through the second guide unit 130 to the defibrating unit 20 (see FIG. 1). The material of the conveyance tube 140 is not particularly limited, and is, for example, resin or metal. The conveyance pipe 140 has an introduction port 141 into which a conveyed product is introduced. The introduction port 141 communicates the inside of the second guide part 130 and the inside of the transport pipe 140. In the example shown in FIG. 5, the planar shape of the inlet 141 is a rectangle, but the shape is not particularly limited. The length in the short side direction of the inlet 141 (for example, the diameter when the inlet is a circle) is preferably longer than the maximum length of the conveyed product. Thereby, it can suppress that a conveyed product is blocked in the inlet 141. FIG. Furthermore, it is preferable that the inner width (for example, inner diameter) of the conveyance pipe 140 is longer than the maximum length of the conveyed product. Thereby, it can suppress that a conveyed product gets blocked in the conveyance pipe 140. FIG.

The transport pipe 140 includes a first transport pipe 142 having a curved portion and a second transport pipe 143 having a straight shape. The first transport pipe 142 is provided on the upstream side of the airflow α. The second transport pipe 143 is connected to the downstream side of the air flow α of the first transport pipe 142. The center line C of the transport pipe 140 is arcuate in the first transport pipe 142 and straight in the second transport pipe 143.

The first transport pipe 142 is disposed so that the air flow α descends from the upstream side toward the downstream side, and the second transport pipe 143 is disposed in a substantially horizontal direction. An introduction port 141 is formed at a portion corresponding to a position including the first transfer pipe 142 and the second transfer pipe 143. Specifically, the introduction port 141 is formed across a portion corresponding to the inside (the side with the large curvature) of the curved portion of the first transfer tube 142 and a straight portion of the second transfer tube 143. . The cross-sectional areas (areas perpendicular to the center line C) of the first transport pipe 142 and the second transport pipe 143 corresponding to the position where the introduction port 141 is provided are constant along the center line C. Further, the flow direction A of the air flow α in the first transfer pipe 142 of the transfer pipe 140 is different from the flow direction B of the air flow α in the second transfer pipe 143, and the inlets 141 flow in the flow of the air flow α. They are formed in different directions.

The curvature radius of the first transport pipe 142 is, for example, not less than 5 times and not more than 15 times the inner width of the first transport pipe 142. Here, the “inner width” is the maximum length in the direction perpendicular to the air flow α in the first transport pipe 142. Specifically, the “inner width” is an inner diameter (diameter) when the cross-sectional shape of the first transport pipe 142 is circular, and is long when the cross-sectional shape of the first transport pipe 142 is elliptical. In the case of the length of the shaft and the cross-sectional shape of the first transport pipe 142 is a polygon, it is the length of the longest line segment connecting the two vertices.

Since the first transport pipe 142 is curved as described above, centrifugal force is generated in the airflow α. The air flow α tends to move to the outside of the curved portion of the first transport pipe 142 (the side with the smaller curvature) due to the centrifugal force, so the pressure inside the first transport pipe 142 becomes higher on the outside. On the other hand, since the curvature outside the inside is small in the curved portion, the distance through which the airflow α passes becomes longer as it is outside. Since the flow rate per unit time passing through an arbitrary cross section perpendicular to the flow direction A in the first transport pipe 142 is uniform, the airflow flowing outside the curved portion passes through a long passage distance in the same unit time, so The flow velocity is faster than the inner part. Therefore, the airflow α has a speed (wind speed) difference in a direction orthogonal to the flow direction A in the first transport pipe 142. That is, in the airflow α passing through the first transport pipe 142, the speed inside the first transport pipe 142 (the side with the higher curvature) is smaller than the speed outside the first transport pipe 142 (the side with the lower curvature) ( slow). At this time, the pressure in the transport pipe 140 is lower on the inner side than on the outer side. A portion of the inlet 141 corresponding to the first transport pipe 142 is provided on the side where the velocity of the air flow α is small (inside the first transport pipe 142). The difference between the speed inside the first transport pipe 142 and the speed outside the first transport pipe 142 is, for example, 1 m / sec. 10 m / sec. Or less, preferably 5 m / sec. Degree.

The transport pipe 140 has a first transport pipe connecting portion 144 connected to the upstream side of the air flow α of the first transport pipe 142. Moreover, it has the 2nd conveyance pipe connection part 146 connected to the downstream of the airflow (alpha) of the 2nd conveyance pipe 143. As shown in FIG. The first transport pipe connecting portion 144 and the second transport pipe connecting portion 146 are pipes, and an air flow α is generated in the pipe by the air flow generating section 150. Here, the cross-sectional area defined by the first transport pipe 142 and the second transport pipe 143 is smaller than the cross-sectional area defined by the first transport pipe connecting portion 144. Similarly, the cross-sectional area defined by the first transport pipe 142 and the second transport pipe 143 is smaller than the cross-sectional area defined by the second transport pipe connecting portion 146. Moreover, the cross section of the part connected to the 1st conveyance pipe 142 of the 1st conveyance pipe connection part 144 becomes small gradually toward the direction of the airflow (alpha). The 1st conveyance pipe connecting part 144 has opening 145 into which air current alpha (atmosphere) is introduced. In the second transport pipe connecting portion 146, the cross-sectional area of the portion connected to the second transport pipe 143 is gradually increased toward the airflow α. And the 2nd conveyance pipe connection part 146 is connected to the defibrating part 20 via the airflow generation part 150. FIG.

Further, the first slope 132 and the second slope 134 of the second guide part 130 are connected to the first guide part 16. In the example of FIG. 4, the first slope 132 is formed obliquely upward on the downstream side from the first transport pipe 142, and the second slope 134 is formed obliquely upward on the upstream side from the second transport pipe connection portion 146.

Above the downstream portion of the introduction port 141 corresponding to the downstream side of the airflow α, a plate-like wall portion 500 formed from the inner surface 16a on the downstream side of the airflow α of the guide portion 111 toward the upstream side of the airflow α. Have. The wall portion 500 may be a part of the first guide portion 16. That is, a part of the shooter 16 can function as the wall portion 500. In this embodiment, since it is connected to the second guide part 130 at a position above the tip part 501 below the first guide part 16, a part of the lower part of the first guide part 16 faces the inlet 141 side. It has a shape that protrudes toward it. A part of the first guide portion 16 that protrudes downward from a position connected to the second guide portion 130 is the wall portion 500.

The wall portion 500 has a plate shape, and the first surface 500 a facing the introduction port 141 of the wall portion 500 (or the first surface 500 a facing the second inclined surface 134 of the wall portion 500 or the straight line of the wall portion 500. In particular, the first surface 500a) closer to the second slope 134 is a flat surface. When the distance in the vertical direction between the reference horizontal plane SL set below the wall portion 500 and the tip portion 501 upstream of the air flow α of the wall portion 500 is the first distance d1, the wall portion 500 A portion having a second distance d2 (a distance between the reference horizontal surface SL and the first surface 500a) longer than the first distance d1 is provided on the downstream side of the air flow α from the tip portion 501. Specifically, the horizontal plane SL serving as a reference in the present embodiment is a plane based on the lowest point on the inner surface of the second transport pipe 143 arranged in the horizontal direction. Here, having the portion having the second distance d2 longer than the first distance d1 on the downstream side of the air flow α from the front end portion 501 of the wall portion 500 means, for example, the first surface of the wall portion 500. 500a has a curved shape, and even if there is a portion having a distance shorter than the first distance d1 on the downstream side of the air flow α with respect to the tip portion 501, the first portion 501 is on the downstream side of the air flow α. This means that there should be a portion that is longer than one distance d1.

In the present embodiment, as shown in FIG. 4, the distance between the reference horizontal plane SL and the first surface 500 a is the first distance as it goes to the downstream side of the airflow α from the front end 501 of the wall 500. It is gradually longer than d1. Note that the angle θ formed by the first surface 500a of the wall portion 500 and the second inclined surface 134 of the second guide portion 130 can be defined to be greater than 0 ° and less than 180 °.

In addition, the first imaginary line m1 along the first surface 500a facing the introduction port 141 of the wall 500 and the second guide unit 130 (one of the guide units 111) connected to the downstream side of the air flow α of the introduction port 141. And the second imaginary line m2 along the second slope 134 (inner wall surface). In the present embodiment, the first surface 500a and the second slope 134 are in contact with each other.

In the present embodiment, the space P is formed by the first surface 500a and the second inclined surface 134. In addition, the space P in this embodiment refers to the area | region which can be divided by the 1st surface 500a and the 2nd slope 134. FIG. Specifically, the space P is a space defined by the first surface 500a and the second inclined surface 134 and opened to the inlet 141 side.

Also, a second transport pipe 143 is disposed below the front end portion 501 of the wall portion 500 on the upstream side of the airflow α. That is, a straight pipe of the second transport pipe 143 is disposed below the front end 501 of the wall 500 in the vertical direction.

In the present embodiment, the first guide portion 16 has a front end portion 501 (end portion or end surface) on the transport pipe 140 side of the inner surface 16a (first side surface or side wall) on the downstream side in the flow direction of the airflow α (transport direction of the transported object). ) Is located upstream of the second inclined surface 134 (second side surface or side wall) of the second guide portion 130 in the flow direction of the air flow α and upstream of the second guide portion 130 in the flow direction of the air flow α. 134 has a portion that extends from the conveying pipe 140 side toward the upstream side in the flow direction of the air flow α and toward the inner surface 16 a of the first guide portion 16. The part of the second slope 134 of the second guide part 130 extends upward from the tip part 501 of the first guide part 16.

Further, in the present embodiment, the flow direction of the air flow α of the second guide portion 130 on the inner surface 16a (first side surface or side wall) on the downstream side in the flow direction of the air flow α of the first guide portion 16 (transport direction of the conveyed product). The second inclined surface 134 (second side surface or side wall) on the downstream side is connected, and the inner surface 16a has a wall portion 500 (portion) that protrudes from the connection portion with the second inclined surface 134 toward the transport pipe.
Even when the airflow flowing along the inner surface 16 a of the guide portion 111 is disturbed in the vicinity of the tip portion 501 of the wall portion 500, the disturbed airflow (vortex etc.) is generated between the wall portion 500 and the second inclined surface 134. The flow of the conveyed product that is guided into the space P and flows into the conveyance pipe 140 from the guide portion 111 via the introduction port 141 is not hindered.

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

Above the downstream portion of the air flow α of the introduction port 141, a wall portion 500 is provided with the first guide portion 16 (shooter 16) as a part. The wall portion 500 is in contact with the second slope 134. Thereby, when the partial airflow α is disturbed on the downstream side of the inlet 141, the airflow α flows upward along the second inclined surface 134, but the airflow α flowing upward collides with the wall portion 500. The turbulence is thought to be quickly suppressed without increasing. In addition, the partially disturbed airflow α is captured in the space P, and is considered to suppress the turbulent airflow. For this reason, the disturbance of the airflow in the inlet 141 is suppressed, and the conveyed product introduced into the conveyance pipe 140 from the inlet 141 can be smoothly conveyed.
Further, in the sheet manufacturing apparatus 100 provided with the conveying device 110, the conveyed product introduced into the conveying tube 140 from the introduction port 141 is smoothly conveyed, so that the uniformity of the quality of the sheet S can be improved. .

(Second Embodiment)
Next, a second embodiment will be described. Since the basic configuration of the sheet manufacturing apparatus is the same as that of the first embodiment, a description thereof will be omitted, and a different configuration of the first embodiment, that is, the configuration of the conveying apparatus will be described. FIG. 6 is a cross-sectional view showing the configuration of the transport device.

As shown in FIG. 6, the transfer device 110 a includes a guide unit 111, a transfer tube 140, and an airflow generation unit 150. In addition, since the structure of the conveyance pipe 140 and the airflow generation part 150 is the same as that of the structure of 1st Embodiment, description is abbreviate | omitted.

The guide unit 111 includes a first guide unit 16 as the shooter 16 and a second guide unit 130. The first slope 132 and the second slope 134 of the second guide part 130 are connected to the inner surface 16 a of the first guide part 16. In the example of FIG. 6, the first slope 132 is formed obliquely upward on the downstream side from the first transport pipe 142, and the second slope 134 is formed obliquely upward on the upstream side from the second transport pipe 143.

And the plate-shaped wall part formed toward the upstream of the airflow (alpha) from the downstream inner surface 16a of the airflow (alpha) of the guide part 111 above the downstream part corresponding to the downstream of the airflow (alpha) of the inlet 141. 600 is provided. One end portion of the wall portion 600 is connected to the inner surface 16a of the first guide portion 16, and the other end portion (tip portion 601) of the wall portion 600 is projected toward the inlet 141 side.

The wall portion 600 has a plate shape, and the first surface 600a facing the introduction port 141 of the wall portion 600 is a flat surface. When the distance in the vertical direction between the reference horizontal plane SL set below the wall portion 600 and the tip portion 601 on the upstream side of the air flow α of the wall portion 600 is the first distance d1, the wall portion 600 A portion having a second distance d2 (a distance between the reference horizontal plane SL and the first surface 600a) longer than the first distance d1 is provided on the downstream side of the air flow α from the front end portion 601. Specifically, the horizontal plane SL serving as a reference in the present embodiment is a plane based on the lowest point on the inner surface of the second transport pipe 143 arranged in the horizontal direction. Here, having the portion having the second distance d2 longer than the first distance d1 on the downstream side of the air flow α from the front end portion 601 of the wall portion 600 means, for example, the first surface of the wall portion 600. 600a has a curved shape, and even if there is a portion having a distance shorter than the first distance d1 on the downstream side of the air flow α with respect to the tip portion 601, the first portion is closer to the downstream side of the air flow α than the tip portion 601. This means that there should be a portion that is longer than one distance d1.

In the present embodiment, as shown in FIG. 6, the distance between the reference horizontal plane SL and the first surface 600 a is the first distance as it goes to the downstream side of the air flow α from the front end 601 of the wall 600. It is gradually longer than d1.

Further, the first imaginary line m1 along the first surface 600a facing the introduction port 141 of the wall 600 and the second guide unit 130 (one of the guide units 111) connected to the downstream side of the air flow α of the introduction port 141. And the second imaginary line m2 along the second slope 134 (inner wall surface). In the present embodiment, the second imaginary line m2 and the wall portion 600 are in contact with each other.

In the present embodiment, the space P is formed by the first surface 600a and the inner surface 16a. In addition, the space P in this embodiment refers to the area | region which can be divided by the 1st surface 600a and the inner surface 16a. Specifically, the space P is a space defined by the first surface 600a and the inner surface 16a and opened to the inlet 141 side.

In addition, a second transport pipe 143 is disposed below the front end portion 601 of the wall portion 600 on the upstream side of the air flow α. That is, a straight pipe of the second transfer pipe 143 is disposed below the front end 601 of the wall 600 in the vertical direction.

In the above description, the wall portion 600 is provided on the inner surface of the first guide portion 16. However, the wall portion 600 and the inner surface 16 a closer to the crushing blade 14 than the wall portion 600 are connected to the first guide portion (shooter). ) 16 and the second portion 134b of the inner surface 16a closer to the transport pipe 140 than the connection portion 139 with the wall portion 139 and one end thereof are connected to the transport tube 140 and the other end is connected to the second portion 134b. The second slope 134 may be the 134a.
That is, the first guide portion 16 has a leading end portion 601 (end portion or end surface) on the transport pipe 140 side of the inner surface 16a (first side surface or side wall) on the downstream side in the flow direction of the air flow α (transport direction of the transported object). The second inclined surface 134 of the second guide part 130 is located on the upstream side in the flow direction of the air flow α with respect to the second inclined surface 134 (second side surface or side wall) on the downstream side in the flow direction of the air flow α of the second guide part 130. It has the 1st part 134a extended toward the wall part 600 while going to the flow direction upstream of the airflow (alpha) from the conveyance pipe 140 side. The first portion 134 a of the second inclined surface 134 of the second guide portion 130 extends upward from the distal end portion 601 of the first guide portion 16.
Even when the airflow flowing along the inner surface 16a of the guide portion 111 and the wall portion 600 is disturbed in the vicinity of the front end portion 601 of the wall portion 600, the disturbed airflow (vortex etc.) There is no hindrance to the flow of the transported material that is guided into the space P between the inclined surface 134 and flows into the transport pipe 140 from the guide portion 111 through the introduction port 141.

A wall portion 600 is provided above the downstream portion of the air flow α at the inlet 141. The wall portion 600 is provided at a position that intersects the second imaginary line m <b> 2 along the second slope 134 of the second guide portion 130. Thereby, when the partial airflow α is disturbed on the downstream side of the inlet 141, the airflow α flows upward along the second inclined surface 134, but the airflow α that flows upward collides with the wall portion 600. The turbulence is thought to be quickly suppressed without increasing. In addition, it is considered that the partially disturbed airflow α is captured in the space P and can suppress the turbulent airflow. For this reason, the disturbance of the airflow in the inlet 141 is suppressed, and the conveyed product introduced into the conveyance pipe 140 from the inlet 141 can be smoothly conveyed.

(Third embodiment)
Next, a third embodiment will be described. Since the basic configuration of the sheet manufacturing apparatus is the same as that of the first embodiment, a description thereof will be omitted, and a different configuration of the first embodiment, that is, the configuration of the conveying apparatus will be described. FIG. 7 is a cross-sectional view showing the configuration of the transport device.

As shown in FIG. 7, the transfer device 110 b includes a guide unit 111, a transfer tube 140, and an airflow generation unit 150. In addition, since the structure of the 1st guide part 16, the conveyance pipe | tube 140, and the airflow generation part 150 is the same as that of the structure of 1st Embodiment, description is abbreviate | omitted.

In the transport device 110b of the present embodiment, a second guide unit 130 (guide unit 111) connected to the downstream side of the air flow α of the introduction port 141 above the downstream portion corresponding to the downstream side of the air flow α of the introduction port 141. A space P formed by the second slope 134 as an inner wall surface.

The first slope 132 is formed obliquely upward and downstream from the first transport pipe 142 and is connected to the inner surface 16a of the first guide portion 16. As shown in FIG. 7, the second inclined surface 134 has a bent portion (or curved portion) H and is connected to the second transport pipe 143 and the first guide portion 16. The second slope 134 has a first portion 134a and a second portion 134b, one end of the first portion 134a is connected to the second transport pipe 143, and the other end of the first portion 134a is the second portion 134b. The other end 134 c of the second portion 134 b is connected to the first guide portion 16. And the bending part H is formed in the connection part of the 1st part 134a and the 2nd part 134b. A space P is formed at a position corresponding to the bent portion H. The space P has a portion that extends upward from the lower end of the first guide portion 16 (the connection portion between the first guide portion 16 and the second slope 134). In this embodiment, the space P in the present embodiment refers to a region that can be partitioned by the first portion 134a and the second portion 134b. Specifically, the space P is a space defined by the first portion 134a and the second portion 134b and opened to the inlet 141 side.

Further, when the distance in the vertical direction between the reference horizontal plane SL set below the second portion 134b and the other end 134c of the second portion 134b is the first distance d1, the other end 134c of the second portion 134b. Further, a portion having a second distance d2 (a distance between the reference horizontal plane SL and the second portion 134b) longer than the first distance d1 is provided on the downstream side of the air flow α. Specifically, the horizontal plane SL serving as a reference in the present embodiment is a plane based on the lowest point on the inner surface of the second transport pipe 143 arranged in the horizontal direction. Here, the downstream side of the air flow α with respect to the other end 134c has a portion having a second distance d2 longer than the first distance d1, for example, the second portion 134b has a curved shape, Even if there is a portion having a distance shorter than the first distance d1 on the downstream side of the airflow α from the end 134c, a portion longer than the first distance d1 is downstream of the airflow α than the other end 134c. That is all you need.

In the present embodiment, as shown in FIG. 7, the distance between the reference horizontal plane SL and the second portion 134b is the first portion as the second portion 134b is further downstream than the other end 134c toward the airflow α. It is gradually longer than the distance d1.

Further, a second transport pipe 143 is disposed below the space P. More specifically, the second transport pipe 143 is disposed below the other end 134c of the second portion 134b constituting the space P. That is, a straight pipe of the second transfer pipe 143 is disposed below the other end 134c in the vertical direction.

In the present embodiment, the first guide portion 16 has an end portion or an end surface (second guide) of the inner surface 16a (first side surface or side wall) on the downstream side in the flow direction of the airflow α (conveyance direction of the conveyed product). (The connection portion with the end portion 134c of the portion 130) is located upstream of the second inclined surface 134 (second side surface or side wall) in the flow direction of the air flow α of the second guide portion 130 in the flow direction of the air flow α. The second inclined surface 134 of the second guide portion 130 has a portion 134a that extends from the conveying tube 140 side toward the upstream side in the flow direction of the air flow α and toward the inner surface 16a of the first guide portion 16. The portion 134 a of the second inclined surface 134 of the second guide portion 130 extends upward from the lower end portion of the downstream side wall of the first guide portion 16. In addition, the second portion 134 b that is continuous with the first portion 134 a of the second slope 134 of the second guide portion 130 and is connected to the lower end portion of the downstream side wall of the first guide portion 16 is downstream of the first guide portion 16. It extends downstream from the lower end of the side wall.

Further, in the present embodiment, the second guide portion 130 is configured such that one end portion 134c of the second inclined surface 134 (second side surface or side wall) on the downstream side in the flow direction of the airflow α (conveyance direction of the conveyed product) is the first guide portion. 16 is connected to the end of the inner surface 16a (first side or side wall) on the downstream side in the flow direction of the air flow α on the side of the conveying pipe 140, and the other end of the second inclined surface is connected to the conveying pipe 140 (its inlet 141). The second inclined surface 134 has a portion located above the end portion of the first guide portion 16.
Even when the airflow flowing along the inner surface 16a of the guide portion 111 is disturbed in the vicinity of the end portion of the inner surface 16a on the transport pipe 140 side, the disturbed airflow (vortex or the like) is formed by the second inclined surface 134. The flow of the transported material that is guided into the space P formed above the end portion of the first guide portion 16 and flows into the transport pipe 140 from the guide portion 111 through the introduction port 141 is not hindered.

A space P is provided above the downstream portion of the air flow α of the inlet 141 by the second slope 134 of the second guide portion 130. As a result, when the partial air flow α is disturbed on the downstream side of the inlet 141, it flows upward along the second inclined surface 134, but the air flow α flowing upward is captured in the space P and suppresses the turbulent air flow. It is done. For this reason, the disturbance of the airflow in the inlet 141 is suppressed, and the conveyed product introduced into the conveyance pipe 140 from the inlet 141 can be smoothly conveyed.

The sheet S manufactured by the sheet manufacturing apparatus according to the present invention mainly refers to a sheet shape. However, it is not limited to a sheet shape, and may be a board shape or a web shape. The sheet in this specification is divided into paper and non-woven fabric. The paper includes a mode in which pulp or used paper is used as a raw material and is formed into a thin sheet, and includes recording paper for writing and printing, wallpaper, wrapping paper, colored paper, drawing paper, Kent paper, and the like. Non-woven fabrics are thicker or lower in strength than paper. General non-woven fabrics, fiber boards, tissue paper (cleaning tissue paper), kitchen paper, cleaners, filters, liquid (waste ink and oil) absorbents, sound absorbing materials, Insulating materials, cushioning materials, mats, etc. The raw material may be plant fibers such as cellulose, chemical fibers such as PET (polyethylene terephthalate) and polyester, and animal fibers such as wool and silk.

In the present invention, a part of the configuration may be omitted within a range having the characteristics and effects described in the present application, or each embodiment or modification may be combined. Note that the manufacturing unit 102 may omit a part of the configuration, add another configuration, or replace it with a known configuration as long as the sheet can be manufactured.

The present invention includes substantially the same configuration (for example, a configuration having the same function, method and result, or a configuration having the same purpose and effect) as the configuration described in the embodiment. In addition, the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced. In addition, the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object. Further, the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

3 ... Tube, 7 ... Tube, 8 ... Tube, 9 ... Hopper, 10 ... Feeder, 12 ... Crushing unit, 14 ... Crushing blade, 15 ... Supporting unit, 16 ... First guide (shooter), 16a ... Inner surface, 20 ... defibrating part, 22 ... inlet, 24 ... outlet, 40 ... sorting part, 41 ... drum part, 42 ... inlet, 43 ... housing part, 44 ... outlet, 45 ... first web forming part 46 ... Mesh belt, 47 ... Stretching roller, 47a ... Stretching roller, 48 ... Suction unit, 49 ... Rotating body, 49a ... Base, 49b ... Projection, 50 ... Mixing unit, 52 ... Additive supply unit, 54 ... pipe, 56 ... blower, 60 ... depositing part, 61 ... drum part, 62 ... introduction port, 63 ... housing part, 70 ... second web forming part, 72 ... mesh belt, 74 ... tension roller, 76 ... suction mechanism 78 ... Humidity control unit, 80 ... Sheet forming unit, 82 ... Pressurizing unit, DESCRIPTION OF SYMBOLS 4 ... Heating part, 85 ... Calender roller pair, 86 ... Heating roller pair, 90 ... Cutting part, 92 ... 1st cutting part, 94 ... 2nd cutting part, 96 ... Discharge part, 100 ... Sheet manufacturing apparatus, 102 ... Manufacturing , 104 ... control unit, 110 ... transfer device, 110 a ... transfer device, 110 b ... transfer device, 111 ... guide portion, 130 ... second guide portion, 132 ... first slope, 134 ... second slope, 134a ... first Part 134b 2nd part 134c Other end 139 Connection part 140 Transport pipe 141 Introducing port 142 1st transport pipe 143 2nd transport pipe 144 1st transport pipe connection 145 ... Opening, 146 ... Second conveying pipe connecting portion, 150 ... Airflow generating portion, 500 ... Wall portion, 500a ... First surface, 501 ... Tip portion, 600 ... Wall portion, 600a ... First surface, 601 ... Tip Part, SL ... horizontal plane as a reference d1 ... the first distance, d2 ... the second distance, m1 ... the first virtual line, m2 ... the second imaginary line, P ... space.

Claims

A conveying device that conveys a conveyed product including at least one of a sheet piece, a fiber, and powder by an air current,
A transport pipe for transporting the transported object;
An air flow generation unit for generating an air flow in the transport pipe;
A guide unit for guiding the transported object to an inlet provided in the transport pipe,
The guide part has a first guide part tapered toward the transport pipe, and a second guide part for connecting the first guide part and the transport pipe,
In the first guide part, an end of the first side surface on the downstream side in the flow direction of the airflow is closer to the transport pipe side than the second side surface of the second guide part on the downstream side in the flow direction of the airflow. Located upstream in the flow direction,
The second side surface of the second guide part has a portion extending from the transport pipe side toward the upstream side in the air flow direction and toward the first side surface of the first guide part. Conveying device.
A conveying device that conveys a conveyed product including at least one of a sheet piece, a fiber, and powder by an air current,
A transport pipe for transporting the transported object;
An air flow generation unit for generating an air flow in the transport pipe;
A guide unit for guiding the transported object to an inlet provided in the transport pipe,
The guide part has a first guide part tapered toward the transport pipe, and a second guide part for connecting the first guide part and the transport pipe,
A second side surface of the second guide portion on the downstream side in the airflow direction is connected to a first side surface on the downstream side in the airflow direction of the first guide portion;
The transport apparatus according to claim 1, wherein the first side surface has a portion protruding toward the transport pipe from a connection portion with the second side surface.
A conveying device that conveys a conveyed product including at least one of a sheet piece, a fiber, and powder by an air current,
A transport pipe for transporting the transported object;
An air flow generation unit for generating an air flow in the transport pipe;
A guide unit for guiding the transported object to an inlet provided in the transport pipe,
The guide part has a first guide part tapered toward the transport pipe, and a second guide part for connecting the first guide part and the transport pipe,
The second guide part is
One end portion of the second side surface on the downstream side in the flow direction of the airflow is connected to the end portion on the transport pipe side of the first side surface on the downstream side in the flow direction of the airflow of the first guide portion,
The other end of the second side surface is connected to the transport pipe,
The transport apparatus according to claim 1, wherein the second side surface has a portion located above the end portion of the first guide portion.
In the conveyance apparatus as described in any one of Claims 1-3,
The air flow has a speed difference in a direction perpendicular to the flow direction of the air flow in the transport pipe,
The conveyance device according to claim 1, wherein the introduction port is provided on a side where the velocity of the airflow is low.
In the conveyance apparatus as described in any one of Claims 1-4,
The transport pipe includes a first transport pipe having a curved portion, and a straight second transport pipe connected to the first transport pipe on the downstream side in the air flow direction,
The conveyance device, wherein the introduction port of the conveyance pipe is formed across a part of the first conveyance pipe and a part of the second conveyance pipe.
In the conveyance apparatus of Claim 5,
The transport apparatus, wherein the second transport pipe is disposed below the first side surface of the first guide portion in the vertical direction.
A transport pipe for transporting a transport object including at least one of a sheet piece, fiber, and powder;
The transport pipe is provided with an introduction port through which the conveyed product is introduced, and a guide unit that guides the conveyed product toward the introduction port;
An air flow generating section for generating an air flow in the transport pipe, and transporting the transported object introduced into the transport pipe by the air flow,
Above the downstream portion of the inlet corresponding to the downstream side of the airflow, there is a plate-like wall portion formed from the inner surface of the guide portion on the downstream side of the airflow toward the upstream side of the airflow. ,
When the distance in the vertical direction between the reference horizontal plane set below the wall portion and the tip portion on the upstream side of the airflow of the wall portion is the first distance,
The transport apparatus according to claim 1, wherein a portion having a second distance longer than the first distance is provided on the downstream side of the airflow with respect to the tip portion of the wall portion.
A transport pipe for transporting a transport object including at least one of a sheet piece, fiber, and powder;
The transport pipe is provided with an introduction port through which the conveyed product is introduced, and a guide unit that guides the conveyed product toward the introduction port;
An air flow generating section for generating an air flow in the transport pipe, and transporting the transported object introduced into the transport pipe by the air flow,
Above the downstream portion of the inlet corresponding to the downstream side of the airflow, there is a plate-like wall portion formed from the inner surface of the guide portion on the downstream side of the airflow toward the upstream side of the airflow. ,
The first imaginary line along the surface of the wall portion facing the introduction port intersects with the second imaginary line along the inner wall surface of the guide portion connected to the downstream side of the airflow of the introduction port. A conveying device characterized by that.
A transport pipe for transporting a transport object including at least one of a sheet piece, fiber, and powder;
The transport pipe is provided with an introduction port through which the conveyed product is introduced, and a guide unit that guides the conveyed product toward the introduction port;
An air flow generating section for generating an air flow in the transport pipe, and transporting the transported object introduced into the transport pipe by the air flow,
Above the downstream portion of the introduction port corresponding to the downstream side of the airflow, there is a space formed by an inner wall surface of the guide portion connected to the downstream side of the airflow of the introduction port. Conveying device.
In the conveyance apparatus as described in any one of Claims 7-9,
The transport pipe is
A first transport pipe provided on the upstream side of the airflow and having a curved portion;
A straight second transport pipe connected to the downstream side of the airflow of the first transport pipe,
The transfer apparatus, wherein the introduction port is formed at a portion corresponding to a position including the first transfer pipe and the second transfer pipe.
In the conveyance apparatus of Claim 10,
The transport device, wherein the second transport pipe is disposed below a tip portion of the wall portion on the upstream side of the airflow or below the space.
A sheet manufacturing apparatus comprising the conveyance device according to any one of claims 1 to 11.