JP6733209B2 - Sheet manufacturing equipment - Google Patents

Description

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

2. Description of the Related Art Conventionally, in a sheet manufacturing apparatus, a so-called wet method has been adopted in which a raw material containing fibers is poured into water, disintegrated mainly by mechanical action, and paper is re-formed. Such a wet type sheet manufacturing apparatus requires a large amount of water, and the apparatus becomes large. Furthermore, the maintenance of the water treatment facility is time-consuming and the energy required for the drying process is large.

Therefore, in order to reduce the size and save energy, a dry type sheet manufacturing apparatus that does not use water as much as possible has been proposed. For example, in Patent Document 1, a piece of paper is defibrated into fibers by a dry defibrating machine, fibers are deinked by a cyclone, and the deinked fibers are passed through a small hole screen on the surface of a forming drum to form a mesh belt. It is described that it is deposited on and molded into paper.

JP 2012-144819 A

However, in the sheet manufacturing apparatus described in Patent Document 1, some fibers may adhere to the small hole screen on the surface of the forming drum to cause clogging. The fibers do not pass through the clogged small holes, and the fibers pass through the clogged small holes, so that it may be difficult to uniformly disperse the defibrated material on the mesh belt. If the paper is molded in this state, the paper will have uneven density and thickness.

One of objects of some aspects of the present invention is to provide a sheet manufacturing apparatus capable of manufacturing a sheet having high uniformity of density and thickness. Another object of some aspects of the present invention is to provide a sheet manufacturing method capable of manufacturing a sheet having high uniformity in density and thickness.

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

One aspect of the sheet manufacturing apparatus according to the present invention is
A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion for dividing the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit that pressurizes and heats the defibrated material deposited by the deposition unit to form a sheet;
Have.

In such a sheet manufacturing apparatus, for example, it is possible to prevent a plurality of defibrated materials from being entangled with each other and being supplied to the deposition unit in a large lump state, and the mesh of the deposition unit is clogged. Can be suppressed. Therefore, with such a sheet manufacturing apparatus, it is possible to manufacture a sheet having high uniformity in density and thickness.
One aspect of the sheet manufacturing apparatus according to the present invention is
A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulating unit.

In the sheet manufacturing apparatus according to the present invention,
The web forming unit,
A deposition surface on which the web is deposited,
It may have a peeling part for peeling the web deposited on the deposition surface from the deposition surface.

With such a sheet manufacturing apparatus, the web can be reliably peeled from the deposition surface.

In the sheet manufacturing apparatus according to the present invention,
The dividing section may include a rotating body having a protrusion for dividing the web by contacting the web to form a subdivided body.

In such a sheet manufacturing apparatus, since the subdivided body is surely formed by the rotating body, it is possible to prevent the plurality of defibrated materials from being entangled with each other and being supplied to the deposition unit in a large lump state. ..

In the sheet manufacturing apparatus according to the present invention,
The web forming unit includes a belt having the deposition surface and at least two rollers around which the belt is stretched,
The peeling section has a fixing plate,
The fixing plate may face a roller positioned on the rotating body side among the rollers and contact the belt.

In such a sheet manufacturing apparatus, the peeling portion can be easily configured only by providing the fixing plate.

In the sheet manufacturing apparatus according to the present invention,
The peeling section may include an airflow generating section that generates an airflow in a direction in which the web separates from the belt near the rotating body.

In such a sheet manufacturing apparatus, the web can be reliably separated from the belt.

In the sheet manufacturing apparatus according to the present invention,
The web forming unit has a belt having the deposition surface,
A control unit that controls the rotation speed of the rotating body according to the moving speed of the belt may be included.

In such a sheet manufacturing apparatus, it is possible to reduce fluctuations in the volume of the subdivided bodies supplied to the deposition unit.

In the sheet manufacturing apparatus according to the present invention,
A detection unit for detecting the thickness of the web,
The control unit may control the moving speed of the belt based on the thickness of the web detected by the detection unit.

In such a sheet manufacturing apparatus, it is possible to reduce fluctuations in the amount of defibrated material supplied to the deposition unit per unit time.

In the sheet manufacturing apparatus according to the present invention,
A detection unit for detecting the thickness of the web,
Based on the thickness of the web detected by the detection unit, a control unit for controlling the rotation speed of the rotating body,
May have.

In such a sheet manufacturing apparatus, it is possible to reduce fluctuations in the volume of the subdivided bodies supplied to the deposition unit.

In the sheet manufacturing apparatus according to the present invention,
The peeling section may include an airflow generating section, and the web may be peeled from the deposition surface by an airflow generated by the airflow generating section.

With such a sheet manufacturing apparatus, the web can be peeled off without contacting the deposition surface. Thereby, the load on the deposition surface can be suppressed.

In the sheet manufacturing apparatus according to the present invention,
The airflow generation unit may apply an airflow at an acute angle to the deposition surface.

With such a sheet manufacturing apparatus, the web can be efficiently separated from the deposition surface.

In the sheet manufacturing apparatus according to the present invention,
The web separated from the deposition surface may be divided in a direction substantially parallel to the transport direction of the web by the airflow generated by the airflow generation unit.

In such a sheet manufacturing apparatus, it is possible to reduce the volume of the subdivided body and facilitate the supply (conveyance) to the deposition unit.

In the sheet manufacturing apparatus according to the present invention,
The airflow applied to the deposition surface may be conditioned.

In such a sheet manufacturing apparatus, electrification of the web is suppressed, and the web can be easily separated from the deposition surface.

In the sheet manufacturing apparatus according to the present invention,
The dividing section may include a suction section for dividing the web by suction to form a subdivided body.

In such a sheet manufacturing apparatus, since the subdivided body is formed by sucking the web separated from the deposition surface, the plurality of defibrated materials are entangled with each other and supplied to the deposition unit in a large lump state. Can be suppressed.

In the sheet manufacturing apparatus according to the present invention,
The web forming unit includes a belt having the deposition surface, a support unit that supports the belt, and a rotating roller that faces the support unit with the belt interposed therebetween.
The web deposited on the deposition surface is sandwiched by the support portion and the rotating roller,
The peeling portion, on the downstream side in the transport direction of the web with respect to the support portion, the airflow generated by the airflow generating portion is applied to the deposition surface to peel the web from the deposition surface,
The dividing unit may suck the web peeled by the peeling unit by the suction unit.

In such a sheet manufacturing apparatus, it is possible to stabilize the position where the web is peeled from the deposition surface (amount of peeling) by applying an air flow in a state where the web is sandwiched between the support portion and the rotating roller on the deposition surface. it can. Then, it is possible to reduce the fluctuation of the volume of the subdivided body formed by sucking the web separated from the deposition surface.

In the sheet manufacturing apparatus according to the present invention,
The air volume generated by the suction unit may be larger than the air volume generated by the air flow generation unit.

In such a sheet manufacturing apparatus, it is possible to suppress scattering of defibrated material due to the airflow of the airflow generation unit.

In the sheet manufacturing apparatus according to the present invention,
You may have the supply part which supplies an additive to the said granule.

In such a sheet manufacturing apparatus, the defibrated material and the additive can be mixed with good uniformity.

In the sheet manufacturing apparatus according to the present invention,
The web forming unit,
A mesh belt on which the web is deposited,
From a surface opposite to the surface of the mesh belt on which the web is deposited, a suction unit that sucks the defibrated material selected by the selection unit,
May have.

With such a sheet manufacturing apparatus, it is possible to remove foreign matters such as colorants contained in the sorted material (first sorted material) that has passed through the sorting unit.

One aspect of the sheet manufacturing method according to the present invention is
A step of defibrating a raw material containing fibers into a defibrated material,
A step of selecting the defibrated defibrated material,
Forming a web on which the defibrated material that has been sorted is deposited;
Dividing the web to form subdivisions;
Depositing the defibrated material constituting the subdivided body,
A step of heating the deposited defibrated material under pressure to form a sheet,
Have.

With such a sheet manufacturing method, it is possible to manufacture a sheet having high uniformity in density and thickness.
One aspect of the sheet manufacturing method according to the present invention is
A step of defibrating a raw material containing fibers into a defibrated material,
A step of selecting the defibrated defibrated material,
Forming a web on which the defibrated material that has been sorted is deposited;
Dividing the web to form subdivisions;
Depositing the defibrated material constituting the subdivided body,
Forming a sheet using the accumulated defibrated material.
Further, one aspect of the sheet manufacturing apparatus according to the present invention is
A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulation unit,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by being divided by contacting the web,
The web forming unit includes a belt having the deposition surface and at least two rollers around which the belt is stretched,
The peeling section has a fixing plate,
The fixing plate faces a roller of the rollers located on the rotating body side and is in contact with the belt.
Further, one aspect of the sheet manufacturing apparatus according to the present invention is
A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulation unit,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by being divided by contacting the web,
The peeling section includes an airflow generation section that generates an airflow in a direction in which the web separates from the belt near the rotating body.
Further, one aspect of the sheet manufacturing apparatus according to the present invention is
A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulation unit,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by being divided by contacting the web,
The web forming unit has a belt having the deposition surface,
It has a control part which controls the rotation speed of the rotating body according to the moving speed of the belt.
Further, one aspect of the sheet manufacturing apparatus according to the present invention is
A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulation unit,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by being divided by contacting the web,
A detection unit for detecting the thickness of the web,
A control unit that controls the rotation speed of the rotating body based on the thickness of the web detected by the detection unit.
Further, one aspect of the sheet manufacturing apparatus according to the present invention is
A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulation unit,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by being divided by contacting the web,
The peeling section has an airflow generating section,
The airflow generation unit separates the web from the deposition surface by an airflow generated at an acute angle with respect to the deposition surface.
Further, one aspect of the sheet manufacturing apparatus according to the present invention is
A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit that forms a sheet using the defibrated material accumulated by the accumulation unit,
A tube supplied with the subdivided body and connected to the deposition section;
A blower that conveys the subdivided body from the tube to the deposition unit,
Have
The dividing portion is a rotating body having a protrusion for dividing the web by contacting the web to form a subdivided body.

The figure which shows the sheet manufacturing apparatus which concerns on 1st Embodiment typically. The figure which shows the sheet manufacturing apparatus which concerns on 1st Embodiment typically. 6 is a flowchart for explaining processing of the control unit of the sheet manufacturing apparatus according to the first embodiment. 6 is a flowchart for explaining processing of the control unit of the sheet manufacturing apparatus according to the first embodiment. The figure which shows typically the sheet manufacturing apparatus which concerns on the modification of 1st Embodiment. The figure which shows typically the sheet manufacturing apparatus which concerns on 2nd Embodiment. The figure which shows typically the sheet manufacturing apparatus which concerns on 2nd Embodiment. The figure which shows typically the sheet manufacturing apparatus which concerns on the 1st modification of 2nd Embodiment. The figure which shows typically the sheet manufacturing apparatus which concerns on the 2nd modification of 2nd Embodiment. The figure which shows the sheet manufacturing apparatus which concerns on 3rd Embodiment typically. The figure which shows the sheet manufacturing apparatus which concerns on 3rd Embodiment typically. The figure which shows typically the spraying part of the airflow generation part which concerns on 3rd Embodiment. FIG. 9 is an example diagram schematically showing another form of the spraying section of the airflow generating section according to the third embodiment. FIG. 9 is an example diagram schematically showing another form of the spraying section of the airflow generating section according to the third embodiment. The figure which shows typically the suction opening part of the dividing part which concerns on 3rd Embodiment. FIG. 9 is an example diagram schematically showing another form of the suction port of the dividing unit according to the third embodiment. FIG. 9 is an example diagram schematically showing another form of the suction port of the dividing unit according to the third embodiment. The figure which shows the sheet manufacturing apparatus which concerns on 4th Embodiment typically. The figure which shows the rotary body which concerns on 4th Embodiment typically. The example figure which shows typically the other form of the rotary body which concerns on 4th Embodiment. The example figure which shows typically the other form of the rotary body which concerns on 4th Embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the embodiments described below do not unduly limit the content of the invention described in the claims. In addition, not all of the configurations described below are essential configuration requirements of the invention.

1. 1. First Embodiment 1.1. Sheet manufacturing apparatus 1.1.1. Configuration First, the sheet manufacturing apparatus according to the first embodiment will be described with reference to the drawings. FIG. 1 is a diagram schematically showing a sheet manufacturing apparatus 100 according to the first embodiment.

As shown in FIG. 1, the sheet manufacturing apparatus 100 includes a supply unit 10, a manufacturing unit 102, and a control unit 140. The manufacturing unit 102 manufactures a sheet. The manufacturing unit 102 includes a crushing unit 12, a defibrating unit 20, a sorting unit 40, a first web forming unit 45 (web forming unit), a mixing unit 50, a deposition unit 60, and a second web forming unit. 70, a sheet forming portion 80 (forming portion), and a cutting portion 90.

The supply unit 10 supplies the raw material to the crushing unit 12. The supply unit 10 is, for example, an automatic charging unit for continuously charging the raw material into the crushing unit 12. The raw material supplied by the supply unit 10 includes fibers such as waste paper and pulp sheet.

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

The defibrating unit 20 defibrates the raw material cut by the crushing unit 12. Here, "to disentangle" means to disentangle and unravel the raw material (object to be disentangled) 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 anti-bleeding agent attached to the raw material from the fibers.

What has passed through the defibrating unit 20 is referred to as a “defibrated material”. "Disentangled material" includes, in addition to disentangled disentangled fibers, resin (resin for binding a plurality of fibers) particles separated from the fibers when disentangled, ink, toner, etc. In some cases, the colorant, an anti-bleeding material, and an additive such as a paper strength enhancer are included. The shape of the disentangled defibrated material is a string shape or a ribbon shape. The disentangled defibrated material may exist in a state not entangled with other disentangled fibers (independent state), or entangled with other disentangled defibrated material to form a lump. It may exist in a state (a state where a so-called “damage” is formed).

The defibration unit 20 performs defibration by dry method in the atmosphere (in air). Specifically, an impeller mill is used as the defibrating unit 20. The defibrating unit 20 has a function of sucking the raw material and generating an air flow for discharging the defibrated material. As a result, the defibrating unit 20 can suck the raw material together with the airflow from the inlet 22 by the airflow generated by the defibrating unit 20, perform a defibration process, and convey the defibrated material to the discharge port 24. The defibrated material that has passed through the defibration unit 20 is transferred to the sorting unit 40 via the tube 3.

The selection unit 40 introduces the defibrated material defibrated by the defibration unit 20 from the introduction port 42 and selects the defibrated material according to the length of the fiber. As the sorting unit 40, for example, a sieve is used. The sorting unit 40 has a mesh (filter, screen), and has fibers or particles smaller than the mesh opening size (those that pass through the mesh, the first sorted product) and fibers larger than the mesh opening size. It can be separated from undisentangled pieces and lumps (those that do not pass through the net, the second sorted material). For example, the first sorted product is transferred to the mixing unit 50 via the pipe 7. The second sorted material is returned from the discharge port 44 to the defibrating unit 20 via the pipe 8. Specifically, the selection unit 40 is a cylindrical sieve that can be rotated by a motor. As the net of the selection unit 40, for example, a wire net, an expanded metal obtained by extending a notched metal plate, or a punching metal having holes formed in the metal plate by a pressing machine or the like is used.

The first web forming unit 45 conveys the first sorted material that has passed through the sorting unit 40 to the mixing unit 50. The first web forming unit 45 includes a mesh belt 46 as a belt having a deposition surface, 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 (mesh opening) of the sorting unit 40 onto the mesh belt 46. The first sorted material 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 those of 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 passes through the sorting section 40 and the first web forming section 45, and is formed into a soft and bulged state containing a large amount of air. The web V deposited on the mesh belt 46 is put into the tube 7 and conveyed to the mixing section 50.

The mixing unit 50 mixes the first sorted product that has passed through the sorting unit 40 (the first sorted product transported by the first web forming unit 45) with the additive containing resin. The mixing unit 50 includes an additive supply unit 52 (supply unit) that supplies an 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 section 50, an airflow is generated by the blower 56, and the first sorted product and the additive can be transported while being mixed in the pipe 54. The mechanism for mixing the first selection product and the additive is not particularly limited, and may be a stirring device using a high-speed rotating blade, or a device that uses container rotation such as a V-type mixer. It may be.

As the additive supply unit 52, a screw feeder as shown in FIG. 1 or a disc feeder not shown is used. The additive supplied from the additive supply unit 52 contains a resin for binding a plurality of fibers. When the resin is supplied, the plurality of fibers are not bound. The resin melts when passing through the sheet forming unit 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, Examples thereof include polyphenylene ether, polybutylene terephthalate, nylon, polyamide, polycarbonate, polyacetal, polyphenylene sulfide, and polyether ether ketone. These resins may be used alone or in an appropriate mixture. The additive supplied from the additive supply unit 52 may be in the form of fiber or powder.

In addition to the resin that binds the fibers, the additive supplied from the additive supply unit 52 may be a coloring agent for coloring the fibers or prevent aggregation of the fibers depending on the type of the sheet to be manufactured. An anti-aggregation agent inhibitor for controlling the heat treatment, and a flame retardant for making the fibers and the like less likely to burn may be contained. The mixture (mixture of the first selected 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 through the introduction port 62, loosens the entangled defibrated material (fibers), and disperses the defibrated material (fibers) in the air. Further, 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.

As the deposition unit 60, a rotating cylindrical sieve is used. The deposition unit 60 has a net, and allows fibers or particles (those that pass through the net) contained in the mixture that has passed through the mixing unit 50 to be smaller than the size of the mesh opening. The configuration of the deposition unit 60 is the same as the configuration of the selection unit 40, for example.

The “sieve” of the deposition unit 60 does not have to have a function of selecting a specific object. That is, the “sieve” used as the depositing section 60 means that it has a net, and the depositing section 60 may drop all the mixture introduced into the depositing section 60.

The second web forming unit 70 forms the web W by depositing the passing matter that has passed through the depositing unit 60. The second web forming unit 70 includes, for example, a mesh belt 72, a stretching roller 74, and a suction mechanism 76.

While moving, the mesh belt 72 deposits the passing matter that has passed through the opening (mesh opening) of the deposition unit 60. The mesh belt 72 is stretched by a stretching roller 74, and has a structure in which it is difficult for a passing object to pass therethrough and air is passed through. The mesh belt 72 moves as the tension roller 74 rotates. The web W is formed on the mesh belt 72 by continuously depositing the passing material that has passed through the deposition unit 60 while the mesh belt 72 continuously moves. 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 deposition unit 60 side). The suction mechanism 76 can generate a downward airflow (airflow from the deposition unit 60 toward the mesh belt 72). The suction mechanism 76 allows the mixture dispersed in the air by the deposition unit 60 to be sucked onto the mesh belt 72. As a result, the discharge speed from the deposition unit 60 can be increased. Further, the suction mechanism 76 can form a downflow in the dropping path of the mixture, and can prevent the defibrated material and the additives from being entangled with each other during the fall.

As described above, by passing through the deposition section 60 and the second web forming section 70 (web forming step), the web W that contains a large amount of air and is soft and inflated 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 section 78 that controls the humidity of the web W is provided. The humidity control section 78 can add water or water vapor to the web W to adjust the amount ratio of the web W and water.

The sheet forming unit 80 pressurizes and heats the web W accumulated on the mesh belt 72 to form the sheet S. In the sheet forming unit 80, by applying heat to 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 through the additive (resin). You can

As the sheet forming unit 80, for example, a heating roller (heater roller), a hot press molding machine, a hot plate, a warm air blower, an infrared heater, or a flash fixing device is used. In the illustrated example, the sheet forming unit 80 includes a first binding portion 82 and a second binding portion 84, and the binding portions 82 and 84 each include a pair of heating rollers 86. Since the binding portions 82 and 84 are configured as the heating roller 86, the web W is continuously transported as compared with the case where the binding portions 82 and 84 are configured as a plate-shaped pressing device (flat plate pressing device). The sheet S can be molded. The number of heating rollers 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 intersecting 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.

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

1.1.2. Rotating body (dividing unit) and detecting unit The sheet manufacturing apparatus 100 further includes a dividing unit 180. The dividing section 180 is for dividing the web V formed by the first web forming section 45 to form the subdivided body 11. The dividing unit 180 according to the present embodiment includes the rotating body 110. Here, FIG. 2 is an enlarged view of a region including the rotating body 110 of FIG. 1 schematically showing the sheet manufacturing apparatus 100. Further, FIG. 2 illustrates a functional block diagram of the control unit 140 of the sheet manufacturing apparatus 100.

The suction unit 48 of the first web forming unit 45 sucks the defibrated material selected by the selecting unit 40 from the surface opposite to the surface of the mesh belt 46 on which the web V is deposited, and the first web forming unit. 45 forms the web V in which the defibrated material sorted by the sorting unit 40 is accumulated. Then, as shown in FIG. 2, the rotating body 110 divides (cuts or cuts) the web V formed by the first web forming unit 45 to form the subdivided body 11.

The rotating body 110 has a base 112 and a protrusion 114 protruding from the base 112. The protrusion 114 has, for example, a plate shape. In the illustrated example, four protrusions 114 are provided, and the four protrusions 114 are provided at equal intervals. Although not shown, the number of protrusions 114 is not particularly limited, and may be two, for example. Moreover, the shape of the protrusion 114 is not particularly limited.

The rotating body 110 can rotate in the arrow R1 direction. Specifically, as the base 112 rotates in the direction of arrow R1, the protrusion 114 can rotate about the base 112 as an axis. The stretching roller 47 of the first web forming unit 45 can rotate in the arrow R2 direction. The rotating direction of the rotating body 110 and the rotating direction of the tension roller 47 are opposite to each other. The peripheral speed of the rotating body 110 (speed of the tip of the protrusion 114) is higher than the moving speed of the mesh belt 46 (conveying speed of the web V). For example, when the moving speed of the mesh belt 46 is 20 mm or more and 100 mm or less per second, the peripheral speed of the rotating body 110 is set to 5 times or more the moving speed of the mesh belt 46.

The rotating body 110 is provided near the first web forming unit 45. In the illustrated example, the rotating body 110 is provided in the vicinity of the tension roller 47a located on the downstream side in the path of the web V. More specifically, the rotating body 110 is provided on the side of the tension roller 47a (a position distant from the tension roller 47a on the downstream side in the horizontal direction (mixing section 50 side)). The rotating body 110 is provided at a position where the protrusion 114 can contact the web V, and does not contact the mesh belt 46 on which the web V is deposited. This can prevent the mesh belt 46 from being worn (damaged) by the protrusion 114. The shortest distance between the protrusion 114 and the mesh belt 46 is, for example, 0.05 mm or more and 0.5 mm or less, and preferably 0.1 mm.

The thickness (length in the rotation direction) of the protrusion 114 is, for example, 0.1 mm or more and 3 mm or less, and preferably 0.8 mm. The width of the protrusion 114 (the length in the rotation axis direction) is appropriately determined according to the width of the web V (the length in the direction orthogonal to the transport direction of the web V). Further, the length of the protrusion 114 (the length in the direction orthogonal to the rotation axis) is appropriately determined according to the positional relationship between the rotating body 110 and the web V (mesh belt 46 or stretching roller 47a). ..

The web V is divided into the subdivided bodies 11 by the protrusions 114 of the rotating body 110, and the web V is introduced into the mixing section 50 via the pipe 7 by its own weight or the airflow generated in the mixing section 50, for example. The additive supply unit 52 of the mixing unit 50 supplies the additive to the subdivided body 11. The size and shape of the subdivision body 11 is not particularly limited, for example, the volume of the subdivision body 11 is 5 mm ³ or more 25000 mm ³ or less.

The deposition unit 60 deposits the defibrated material forming the subdivided body 11. Specifically, the deposition unit 60 loosens the subdivided bodies 11, and deposits the loosened subdivided bodies 11 (defibrated material forming the subdivided bodies 11) on the mesh belt 72. Then, the sheet forming unit 80 pressurizes and heats the defibrated material deposited by the deposition unit 60 to form the sheet S.

The sheet manufacturing apparatus 100 further includes a detection unit 120. The detection unit 120 detects the thickness of the web V deposited on the mesh belt 46. The detection unit 120 is, for example, an optical sensor that receives the reflected light on the front surface and the reflected light on the back surface of the web V and detects the thickness of the web V based on the time difference between the reflected light on the front surface and the reflected light on the back surface. is there. The detection unit 120 faces the mesh belt 46, for example. The form of the detection unit 120 is not particularly limited as long as the thickness of the web V can be detected.

In the illustrated example, the sheet manufacturing apparatus 100 has a housing section 40a that houses the sorting section 40, and a pile seal 40b provided in the housing section 40a. The pile seal 40b is composed of, for example, a brush (brush) in which fine hair is densely planted on the surface of the base portion, and the brush is in contact with the mesh belt 46. The pile seal 40b can prevent the defibrated material selected by the selection unit 40 from leaking from the gap between the housing unit 40a and the mesh belt 46.

1.1.3. Control Unit As shown in FIG. 2, the control unit 140 of the sheet manufacturing apparatus 100 includes an operation unit 141, an output unit 142, a storage unit 143, a storage medium 144, and a processing unit 145.

The operation unit 141 performs a process of acquiring an operation signal according to an operation by the user and sending the signal to the processing unit 145. The operation unit 141 is, for example, a button, a key, a touch panel display, a microphone, or the like.

The output unit 142 displays the processing result of the processing unit 145 based on the signal input from the processing unit 145. The output unit 142 displays the processing result of the processing unit 145 in characters, for example. The output unit 142 is, for example, an LCD (Liquid Crystal Display), a CRT (Cathode Ray Tube), a touch panel display, or the like. The output unit 142 may output the processing result of the processing unit 145 by sound.

The storage unit 143 stores programs and data for the processing unit 145 to perform various control processes. The storage unit 143 is further used as a work area of the processing unit 145, and an operation signal input from the operation unit 141, programs and data read from the storage medium 144, and calculation performed by the processing unit 145 according to various programs. The results etc. are temporarily stored.

The storage medium 144 is a computer-readable storage medium for storing various application programs and data. The program may be distributed from the information storage medium of the host device (server) to the storage medium 144 (storage unit 143) via a network or the like. The storage medium 144 may also function as a storage unit that stores data that needs to be stored for a long time among the data generated by the processing of the processing unit 145. The storage medium 144 is realized by, for example, an optical disk (CD, DVD), a magneto-optical disk (MO), a magnetic disk, a hard disk, a magnetic tape, a memory (ROM, flash memory, etc.).

The processing unit 145 performs various processes according to the program stored in the storage unit 143 and the program stored in the storage medium 144. Specifically, the processing unit 145 performs the following processing. The function of the processing unit 145 can be realized by hardware such as various processors (CPU, DSP, etc.), ASIC (gate array, etc.), or a program. Note that at least a part of the processing unit 145 may be realized by hardware (dedicated circuit).

Here, FIG. 3 is a flowchart for explaining the processing of the control unit 140.

For example, when the user requests a process via the operation unit 141, the processing unit 145 receives the operation signal from the operation unit 141 and starts the process.

First, the processing unit 145 receives a signal from the detection unit 120 and acquires the thickness of the web V detected by the detection unit 120 (S1). The processing unit 145 may perform processing for displaying the acquired thickness of the web V on the output unit 142.

Next, the processing unit 145 controls the moving speed of the mesh belt 46 based on the thickness of the web V detected by the detection unit 120 (S2). Specifically, the processing unit 145 receives a signal from the detection unit 120, outputs a signal to a first driving unit (a driving unit for driving the stretching roller 47), which is not illustrated, and the stretching roller 47. Control the rotation speed of.

For example, when the thickness of the web V detected by the detection unit 120 is larger than a predetermined value, the processing unit 145 controls so that the moving speed of the mesh belt 46 is slowed down. As a result, it is possible to prevent the amount of defibrated material supplied to the mixing unit 50 per unit time from increasing. Further, for example, when the thickness of the web V detected by the detection unit 120 is smaller than a predetermined value, the processing unit 145 controls so that the moving speed of the mesh belt 46 is increased. This can prevent the amount of defibrated material supplied to the mixing unit 50 from decreasing per unit time. That is, the processing unit 145 controls the moving speed of the mesh belt 46 so that the fluctuation in the amount (mass) of the defibrated material supplied to the mixing unit 50 per unit time becomes small.

Next, the processing unit 145 controls the rotation speed (rotation speed) of the rotating body 110 according to the movement speed of the mesh belt 46 (based on the movement speed) (S3). Specifically, the processing unit 145 outputs a signal to the first driving unit and then outputs a signal to a second driving unit (a driving unit for driving the rotating body 110) (not shown), and the processing unit 145 outputs the signal. Control the number of rotations. For example, data regarding the moving speed of the mesh belt 46 and the number of rotations of the rotating body 110 is stored in the storage unit 143 in advance, and the processing unit 145 acquires information about the number of rotations of the rotating body 110 based on the data. Then, the signal may be output to the second drive unit.

For example, when the moving speed of the mesh belt 46 is controlled to be slow in step S2, the processing unit 145 controls to reduce the number of rotations of the rotating body 110. This can prevent the volume of the subdivided bodies 11 supplied to the mixing unit 50 from decreasing. Further, for example, when the moving speed of the mesh belt 46 is controlled to be increased in step S2, the processing unit 145 controls to increase the number of rotations of the rotating body 110. This can prevent the volume of the subdivided bodies 11 supplied to the mixing unit 50 from increasing. That is, the processing unit 145 controls the rotation speed of the rotating body 110 so that the fluctuation of the volume of the subdivided body 11 supplied to the mixing unit 50 becomes small.

The sheet manufacturing apparatus 100 has a detection unit (not shown) that detects the moving speed of the mesh belt 46, and the processing unit 145 is based on the moving speed of the mesh belt 46 detected by the detecting unit. The rotation speed of the rotating body 110 may be controlled.

The processing unit 145 ends the process, for example, after controlling the rotation speed of the rotating body 110 (after outputting a signal to the second driving unit).

Note that, as shown in FIG. 4, the processing unit 145 may control the rotation speed of the rotating body 110 based on the thickness of the web V detected by the detection unit 120 after step S1 (S4). .. Specifically, the processing unit 145 may receive a signal from the detection unit 120 and output a signal to a second driving unit (not shown) to control the rotation speed of the rotating body 110.

For example, when the thickness of the web V detected by the detection unit 120 is larger than a predetermined value, the processing unit 145 may control to increase the rotation speed of the rotating body 110. This can prevent the volume of the subdivided bodies 11 supplied to the mixing unit 50 from increasing. Further, for example, when the thickness of the web V detected by the detection unit 120 is smaller than a predetermined value, the processing unit 145 may control the rotation speed of the rotating body 110 to be small. This can prevent the volume of the subdivided bodies 11 supplied to the mixing unit 50 from decreasing.

The sheet manufacturing apparatus 100 has the following features, for example.

In the sheet manufacturing apparatus 100, the first web forming unit 45 that forms the web V on which the defibrated material that has been selected by the selecting unit 40 is deposited, and the web V that is formed by the first web forming unit 45 are divided into subdivided bodies. And a rotating body 110 having a protrusion 114 for forming 11. Therefore, in the sheet manufacturing apparatus 100, for example, the fluctuation of the amount of defibrated material supplied to the deposition unit 60 per unit time can be reduced. Further, for example, it is possible to reduce the fluctuation of the volume of the subdivided bodies 11 supplied to the deposition unit 60. Accordingly, in the sheet manufacturing apparatus 100, it is possible to suppress, for example, a plurality of defibrated materials from being entangled with each other and being supplied to the deposition unit 60 in a large lump state, and the meshes of the deposition unit 60 are not visible. It is possible to suppress the occurrence of clogging. Therefore, the sheet manufacturing apparatus 100 can manufacture the sheet S having high uniformity in density and thickness.

Furthermore, since the sheet manufacturing apparatus 100 includes the first web forming unit 45, it is possible to further reduce the variation in the amount of defibrated material supplied to the deposition unit 60 per unit time. For example, even if the amount of defibrated material supplied to the sorting unit 40 per unit time varies due to the defibrated material being attached to the inner wall of the tube 3 that connects the defibrating unit 20 and the sorting unit 40, By depositing the defibrated material on the mesh belt 46 of the first web forming unit 45, the defibrated material can be conveyed to the deposition unit 60 in a state in which the variation in the amount of the defibrated material is reduced.

In the sheet manufacturing apparatus 100, the control unit 140 controls the rotation speed of the rotating body 110 according to the moving speed of the mesh belt 46. Therefore, in the sheet manufacturing apparatus 100, it is possible to reduce the fluctuation in the volume of the subdivided bodies 11 supplied to the deposition unit 60.

In the sheet manufacturing apparatus 100, the control unit 140 controls the moving speed of the mesh belt 46 based on the thickness of the web V detected by the detection unit 120. Therefore, in the sheet manufacturing apparatus 100, it is possible to reduce fluctuations in the amount of defibrated material supplied to the deposition unit 60 per unit time.

In the sheet manufacturing apparatus 100, the control unit 140 may control the rotation speed of the rotating body 110 based on the thickness of the web V detected by the detection unit 120. Therefore, in the sheet manufacturing apparatus 100, it is possible to reduce the fluctuation in the volume of the subdivided bodies 11 supplied to the deposition unit 60.

The sheet manufacturing apparatus 100 has an additive supply unit 52 that supplies an additive to the subdivided body 11. Therefore, in the sheet manufacturing apparatus 100, the defibrated material and the additive can be mixed with good uniformity. For example, even if the additive is supplied to the web V in a state where the web V is not divided, the defibrated material and the additive may not be mixed with good uniformity. Further, in the sheet manufacturing apparatus 100, since it is possible to reduce the variation in the amount of defibrated material supplied to the mixing section 50 per unit time, for example, the time during which no defibrated material is present in the mixing section 50 is shortened. be able to. Therefore, for example, when the additive is continuously supplied from the additive supply unit 52, the amount of the additive that is not mixed with the defibrated material can be reduced, and the additive can be prevented from being wasted. Thereby, for example, cost reduction can be achieved.

The sheet manufacturing apparatus 100 has a suction unit 48 that sucks the defibrated material selected by the selection unit 40. Therefore, in the sheet manufacturing apparatus 100, it is possible to remove foreign matters such as colorants contained in the first sorted material that has passed through the sorting unit 40.

In the sheet manufacturing apparatus 100, the protrusion 114 has a plate shape. Therefore, even if the protrusion 114 and the mesh belt 46 contact each other, the possibility that the mesh belt 46 will be damaged can be reduced. For example, if the shape of the protrusion is a blade having a sharp tip, the mesh belt is more likely to be damaged when the protrusion and the mesh belt are in contact with each other.

In the sheet manufacturing method according to this embodiment, for example, the sheet manufacturing apparatus 100 is used. In the sheet manufacturing method using the sheet manufacturing apparatus 100, as described above, a step of defibrating a raw material containing fibers into a defibrated material, a step of selecting a defibrated defibrated material, and a selected defibrated fiber The step of forming the web V on which the objects are deposited, the step of dividing the web V to form the subdivided body 11, the step of depositing the defibrated material forming the subdivided body 11, and the addition of the deposited defibrated material And heating to form a sheet. Therefore, the sheet manufacturing method using the sheet manufacturing apparatus 100 can manufacture the sheet S having high density and thickness uniformity.

1.2. Modified Example of Sheet Manufacturing Apparatus Next, a sheet manufacturing apparatus according to a modified example of the first embodiment will be described with reference to the drawings. FIG. 5: is a figure which shows typically the sheet manufacturing apparatus 200 which concerns on the modification of 1st Embodiment. Hereinafter, differences between the sheet manufacturing apparatus 200 and the example of the sheet manufacturing apparatus 100 described above will be described, and description of the same points will be omitted.

As shown in FIG. 5, the sheet manufacturing apparatus 200 differs from the above-described sheet manufacturing apparatus 100 in that it has a classifying unit 30. In the sheet manufacturing apparatus 200, the defibrated material that has passed through the defibration unit 20 is transferred to the classification unit 30 via the tube 3.

The classifying unit 30 classifies the defibrated material that has passed through the defibrating unit 20. Specifically, the classifying unit 30 separates and removes the defibrated material having a relatively small size and a low density (resin particles, coloring agents, additives, etc.). As a result, the proportion of fibers that are relatively large or have a high density in the defibrated material can be increased.

An airflow classifier is used as the classifying unit 30. An airflow classifier generates a swirling airflow and separates it according to the difference in centrifugal force that is received due to the size and density of the object to be classified, and the classification point can be adjusted by adjusting the speed and centrifugal force of the airflow. it can. Specifically, a cyclone, an elbow jet, an eddy classifier, or the like is used as the classifying unit 30. In particular, the cyclone as shown in the drawing can be suitably used as the classifying unit 30 because of its simple structure.

The classification unit 30 includes, for example, an introduction port 31, a cylindrical portion 32 to which the introduction port 31 is connected, an inverted conical portion 33 located below the cylindrical portion 32 and continuous with the cylindrical portion 32, and an inverted conical portion 33. Has a lower discharge port 34 provided at the center of the lower part of the above, and an upper discharge port 35 provided at the center of the upper part of the cylindrical portion 32.

In the classifying unit 30, the air flow on which the defibrated material introduced from the introduction port 31 is placed changes into a circumferential motion in the cylindrical unit 32. As a result, the introduced defibrated material is subjected to centrifugal force, and the classifying unit 30 causes the defibrated material to have a higher density (first classified material) than the resin particles or the ink particles in the defibrated material. Among them, it can be separated into resin particles smaller than fibers and having a low density, colorants, additives and the like (second classified product). The first classified product is discharged from the lower discharge port 34 and introduced into the sorting unit 40 via the pipe 4. On the other hand, the second classified material is discharged from the upper discharge port 35 to the receiving portion 36 via the pipe 5.

The sheet manufacturing apparatus 200 has a classifying unit 30. Therefore, the defibrated material that has passed through the defibration unit 20 can be divided into a first classified material and a second classified material.

2. Second embodiment 2.1. Sheet Manufacturing Apparatus Next, a sheet manufacturing apparatus according to the second embodiment will be described with reference to the drawings. FIG. 6 is a diagram schematically showing the sheet manufacturing apparatus 300 according to the second embodiment, and is an enlarged view of a region including the rotating body 110. Hereinafter, in the sheet manufacturing apparatus 300, differences from the example of the sheet manufacturing apparatus 100 described above will be described, and description of the same points will be omitted.

As shown in FIG. 6, the sheet manufacturing apparatus 300 differs from the above-described sheet manufacturing apparatus 100 in that the sheet manufacturing apparatus 300 has a peeling section 310. The peeling section 310 is a member for peeling the web V accumulated on the mesh belt 46 from the mesh belt 46.

The peeling section 310 has a fixing plate 312. Here, FIG. 7 is an enlarged view of a region including the fixing plate 312 of FIG. In the illustrated example, the peeling section 310 is configured by the fixing plate 312. The fixed plate 312 is provided near the rotating body 110. In the example shown in FIG. 6, the first web forming unit 45 has three stretching rollers 47 on which the mesh belt 46 is stretched, and the fixing plate 312 is the most rotative body 110 side of the three stretching rollers. It faces the tension roller 47a located at the position of the mesh belt 46. The fixed plate 312 is in contact with the mesh belt 46 in a movable state. The fixed plate 312 is fixed without moving along with the movement of the mesh belt 46.

The fixed plate 312 has, for example, a plate shape. The fixed plate 312 is in contact with the mesh belt 46 on the main surface 313. The thickness of the fixing plate 312 is, for example, 0.05 mm or more and 1 mm or less, and preferably 0.2 mm. The fixing plate 312 can contact the web V at the end 314.

In FIG. 7, at the contact point between the fixed plate 312 and the mesh belt 46, the angle θ formed by the tangent line T of the curved line formed by the mesh belt 46 and the straight line formed by the main surface 313 of the fixed plate 312 is larger than 0°. The angle is 45° or less, preferably more than 0° and 20° or less.

The base 112 of the rotating body 110 is provided below the end 314 of the fixed plate 312 (downward in the vertical direction). Accordingly, in the sheet manufacturing apparatus 300, a part of the web V is separated from the mesh belt 46 by the end 314 of the fixing plate 312, and the separated web V can be divided by the protrusion 114 of the rotating body 110.

The sheet manufacturing apparatus 300 has a peeling unit 310 for peeling the web V from the mesh belt 46. Therefore, in the sheet manufacturing apparatus 300, the web V can be reliably separated from the mesh belt 46. Specifically, in the sheet manufacturing apparatus 300, the peeling section 310 has a fixing plate 312. Therefore, the peeling portion 310 can be easily configured only by providing the fixing plate 312.

2.2. Modification of sheet manufacturing apparatus 2.2.1. First Modified Example Next, a sheet manufacturing apparatus according to a first modified example of the second embodiment will be described with reference to the drawings. FIG. 8: is a figure which shows typically the sheet manufacturing apparatus 400 which concerns on the 1st modification of 2nd Embodiment. Hereinafter, in the sheet manufacturing apparatus 400, differences from the example of the sheet manufacturing apparatuses 100 and 300 described above will be described, and description of the same points will be omitted.

As shown in FIG. 8, the sheet manufacturing apparatus 400 differs from the above-described sheet manufacturing apparatus 300 in that a humidity control unit 478 that controls the humidity of the web V is provided. The humidity control section 478 can add water or water vapor to the web V to adjust the amount ratio of the web V and water. In the illustrated example, the detection unit 120 is provided at a position where the thickness of the web V can be detected before adding water or the like to the web V by the humidity control unit 478, but the detection unit 120 is It may be provided at a position where the thickness of the web V can be detected after water or the like is added to the web V by the humidity control section 478.

In the sheet manufacturing apparatus 400, for example, the cover portion 440 is provided so as to cover the web V conveyed to the outside of the housing portion 40a. For example, the cover section 440 is provided with two openings, the detection section 120 is provided in one of the openings, and the humidity control section 478 is provided in the other opening. The cover portion 440 and the tube 7 are connected by a pile seal 442. Thereby, it is possible to prevent the moisture from the humidity control unit 478 from leaking to the outside. The structure of the pile seal 442 is, for example, the same as the structure of the pile seal 40b.

The peeling unit 310 of the sheet manufacturing apparatus 400 further includes a fixing plate 412. The fixed plate 412 is provided above the rotating body 110 (upper side in the vertical direction). In the illustrated example, the fixed plate 412 is in contact with the pile seal 442. The size and shape of the fixed plate 412 are the same as those of the fixed plate 312, for example. The fixing plate 412 can separate the web V from the pile seal 442 when the web V moves along the pile seal 442, for example. The web V separated by the fixed plate 412 is divided by the protrusion 114 of the rotating body 110 when passing between the rotating body 110 and the stretching roller 47a.

The sheet manufacturing apparatus 400 has a humidity control unit 478. Therefore, the humidity of the web V can be adjusted. Further, the sheet manufacturing apparatus 400 has a fixing plate 412. Therefore, for example, when the web V moves along the pile seal 442, the web V can be separated from the pile seal 442.

In place of the structure in which the pipe 7 is connected to the cover portion 440, a roller arranged to face the mesh belt 46 and capable of contacting the web V, and a seal arranged on the pipe 7 side and contacting the outer peripheral surface of the roller. A portion (for example, a pile seal) may be provided to prevent the web V or the subdivided body 11 from being scattered to the outside of the tube 7. In this case, the fixing plate 412 may be arranged so that the web V stuck to the roller can be peeled off.

2.2.2. Second Modified Example Next, a sheet manufacturing apparatus according to a second modified example of the second embodiment will be described with reference to the drawings. FIG. 9 is a diagram schematically showing the sheet manufacturing apparatus 500 according to the second modified example of the second embodiment, and is an enlarged view of a region including the rotating body 110. Hereinafter, differences between the sheet manufacturing apparatus 500 and the sheet manufacturing apparatuses 100 and 300 described above will be described, and description of the same points will be omitted.

In the sheet manufacturing apparatus 300, as shown in FIG. 7, the peeling section 310 had a fixing plate 312. On the other hand, in the sheet manufacturing apparatus 500, as shown in FIG. 9, the peeling section 310 has an airflow generating section 512. In the illustrated example, the peeling section 310 is configured by the airflow generating section 512.

The airflow generation unit 512 generates an airflow A in a direction in which the web V separates from the mesh belt 46. The airflow generation unit 512 generates the airflow A in the vicinity of the rotating body 110. Here, “the airflow generating unit 512 generates the airflow A in the vicinity of the rotating body 110 ”means that the airflow A generated by the airflow generating unit 512 reaches the rotating body 110, and specifically, The distance between the airflow generating unit 512 and the base 112 of the rotating body 110 is 0.1 mm or more and 0.5 mm or less. In the illustrated example, the airflow generation unit 512 is provided inside the mesh belt 46 and faces the rotating body 110 via the mesh belt 46.

In the sheet manufacturing apparatus 500, a part of the web V can be separated from the mesh belt 46 by the air flow A generated by the air flow generation unit 512, and the separated web V can be divided by the protrusion 114 of the rotating body 110.

In the above description, the airflow generation unit 512 has described an example in which air is blown to generate the airflow A. However, the airflow generation unit 512 may suction air to generate the airflow A. In this case, the airflow generation unit 512 is provided outside the mesh belt 46. As the airflow generation unit 512, for example, a fan or a blower can be used.

The sheet manufacturing apparatus 500 has the airflow generation unit 512 as described above. Therefore, in the sheet manufacturing apparatus 500, the web V can be reliably separated from the mesh belt 46. Further, in the sheet manufacturing apparatus 500, the subdivided body 11 can be conveyed to the mixing section 50 by the airflow A, for example.

3. Third Embodiment 3.1. Sheet Manufacturing Apparatus Next, a sheet manufacturing apparatus according to the third embodiment will be described with reference to the drawings. 10 and 11 are diagrams schematically showing the sheet manufacturing apparatus 600 according to the third embodiment. Hereinafter, in the sheet manufacturing apparatus 600, points different from the example of the sheet manufacturing apparatus 100 described above will be described, and description of the same points will be omitted.

As shown in FIGS. 10 and 11, the sheet manufacturing apparatus 600 has the above-mentioned point in that it has an airflow generating unit 800 that constitutes the peeling unit 310 and a suction unit (the blower 56 in this embodiment) that constitutes the dividing unit 180. The sheet manufacturing apparatus 100 is different.

The air flow generation unit 800 generates an air flow and separates a part of the web V from the deposition surface of the mesh belt 46 by the air flow. Since the web V can be separated from the deposition surface without contacting the mesh belt 46, the load on the mesh belt 46 can be suppressed. Further, by blowing an air flow on the mesh belt 46, the defibrated material entangled with the mesh of the mesh belt 46 can be easily peeled (compared to the fixed plate 312). The airflow generation unit 800 includes a blower 810, a pipe 815 having one end connected to the blower 810, and a blowing unit 820 connected to the other end of the pipe 815. The blower 810 generates an air flow for separating the web V. The spraying section 820 has an opening 821. Then, the airflow generated by the blower 810 is discharged from the opening 821 of the spray unit 820 via the pipe 815.

FIG. 12: is a figure which shows typically the spraying part of the airflow generation part which concerns on this embodiment. As shown in FIG. 12, the opening 821 of the spraying section 820 has a rectangular slit shape. Further, in the spraying part 820, the opening area of the cross section in the direction intersecting the direction of the air flow (direction parallel to the opening 821) gradually decreases from the end connected to the pipe 815 toward the opening 821. Is formed. As a result, the velocity of the airflow discharged from the opening 821 can be increased. The length of the opening 821 in the longitudinal direction is substantially equal to the width of the mesh belt 46 (the length in the direction orthogonal to the transport direction of the web V).

The form of the spraying unit 820 is not limited to the above configuration. FIG. 13 and FIG. 14 are examples of diagrams schematically showing other configurations of the spraying section of the airflow generating section. As shown in FIG. 13, the spraying section 820a includes a plurality of nozzles 822 arranged in a line in the width direction of the mesh belt 46. The airflow generated by the blower 810 is discharged from the nozzle 822 of the spray unit 820a via the pipe 815.

Further, as shown in FIG. 14, the spraying section 820b is provided with a plurality of partition walls 825 that partition the internal space of the spraying section 820b and the opening 821 in the width direction of the mesh belt 46. At least a part of the partition wall 825 is formed of a filter, a mesh, or the like, and is configured to allow air to pass therethrough. A pipe 815a for introducing the airflow generated by the blower 810 is provided in any of the space portions partitioned by the partition wall 825. In the example shown in FIG. 14, the spray part 820b is divided into five space parts by four partition walls 825, and two space parts (two parts from both ends) of the space part are provided with pipes 815a. .. Then, the opening 821 is divided into an opening 821a corresponding to the space portion where the pipe 815a is provided and an opening 821b corresponding to the space portion where the pipe 815a is not provided. The airflow flowing from the pipe 815a is directly discharged from the opening 821a, and the airflow flowing from the pipe 815a and passing through the partition wall 825 is discharged from the opening 821b. Therefore, the speed of the airflow discharged from the opening 821b is slower (the strength is weaker) than that of the airflow discharged from the opening 821a. This causes a difference in the strength of the airflow in the width direction of the mesh belt 46 (the width direction of the web V), and the web V is easily divided in a direction substantially parallel to the transport direction of the web V.

Further, as shown in FIG. 11, the airflow generation unit 800 is set so that the airflow strikes the deposition surface at an acute angle. The angle θa formed by the direction of the airflow discharged from the opening 821 and the deposition surface of the mesh belt 46 that is hung on the tension roller 47a is 0° or more and less than 90°, and more preferably 0° or more and 60° or less. Is. As a result, the web V deposited on the mesh belt 46 can be efficiently separated from the deposition surface.

Further, in the present embodiment, the humidity of the air flow applied to the mesh belt 46 by the air flow generation unit 800 is adjusted. The airflow generation unit 800 includes a humidity control unit 880, and the humidity control unit 880 is connected via a pipe 881 to a pipe 815 that sends the airflow from the blower 810 to the blowing unit 820. The humidity control unit 880 can release moisture into the air and adjust the humidity of the air flow generated by the blower 810. The relative humidity of the airflow is adjusted to, for example, 50% or more and 70% or less. Then, the conditioned airflow is discharged from the opening 821 of the spraying section 820 and hits the deposition surface of the web V and the mesh belt 46. As a result, the charging of the web V and the mesh belt 46 is suppressed, and the web V can be easily separated from the mesh belt 46. The humidity control unit 880 may be a humidification unit that increases the humidity.

The blower 56 that constitutes the suction unit is configured to divide the web V by suction to form the subdivided body 11. That is, the blower 56 generates an air flow for sucking the peeled web V. The speed of the air flow generated by the blower 56 is set to be higher than the moving speed of the mesh belt 46 (conveying speed of the web V). For example, the velocity of the air flow generated by the blower 56 is set to be 10 times or more faster than the moving velocity of the mesh belt 46. As a result, the web V is torn in the width direction of the web V (direction intersecting the transport direction of the web V) due to the speed difference between the speed of the airflow generated by the blower 56 and the moving speed of the mesh belt 46, and the subdivided body is broken. 11, and the subdivided body 11 is conveyed to the blower 56 (deposition unit 60) side by the air flow.

Further, the dividing section 180 includes a suction port section 900 connected to the blower 56. The suction port portion 900 has a suction port 921 for sucking (sucking) the subdivided body 11 by the air flow generated by the blower 56. The suction port 921 is provided at a position corresponding to the downstream end of the web V in the transport direction. For example, the suction port 921 is arranged on the downstream side of the tension roller 47a and a rotating roller 49 described later so as to face the rollers 47a and 49. The suction port 900 is connected to the pipe 7, the pipe 7 is connected to the pipe 54, and the pipe 54 is connected to the blower 56. Then, the suction port portion 900 is arranged so as to become lower as it goes from the suction port 921 to the pipe 7, and the pipe 7 is arranged so as to become lower as it goes to the pipe 54. The subdivided body 11 is sucked from the suction port 900 by the air flow generated by the blower 56 and is conveyed to the deposition unit 60 side via the pipe 7 and the pipe 54.

FIG. 15 is a diagram schematically showing the suction port section of the dividing section according to the present embodiment. As shown in FIG. 15, the suction port 900 includes a suction port 921 that is open. The suction port 921 has a rectangular slit shape. The suction port 900 is formed so that the opening area of the cross section in the direction intersecting the air flow direction (the direction parallel to the suction port 921) gradually decreases from the suction port 921 to the pipe 7. Thereby, the velocity of the airflow can be increased toward the pipe 7. The suction port 921 has a size capable of sucking the subdivided body 11, and the length in the longitudinal direction thereof is substantially equal to the width of the mesh belt 46.

The form of the suction port 900 is not limited to the above configuration. FIG. 16 and FIG. 17 are examples of diagrams schematically showing other forms of the suction port of the dividing section. As shown in FIG. 16, the suction port portion 900 a is provided with a plurality of partition walls 925 that partition the suction port 921 in the width direction of the mesh belt 46. The partition wall 925 has, for example, a thin plate shape. In the example shown in FIG. 16, three partition walls 925 form four suction ports 921a. The web V separated from the deposition surface of the mesh belt 46 by the airflow generated by the airflow generation unit 800 is sucked and divided by the airflow generated by the blower 56 to become the subdivided body 11. When the subdivided body 11 (web V) is sucked into the suction port 921, the subdivided body 11 comes into contact with the front end portion (front edge portion) of the partition wall 925 and is divided in a direction substantially parallel to the conveyance direction (suction direction) of the web V, The subdivided body 11 having a smaller volume is conveyed to the deposition unit 60 side.

Further, as shown in FIG. 17, a plurality of tubes 7a are connected to the suction port portion 900b. In the example shown in FIG. 17, three tubes 7a are provided at equal intervals. The plurality of pipes 7 a merge and are connected to one pipe 54. The subdivided body 11 (web V) sucked from the suction port 921 is sucked into each tube 7a and divided into a direction substantially parallel to the transport direction (suction direction) of the web V.

Further, as shown in FIG. 11, the first web forming unit 45 faces the tension roller 47a as a support unit that supports the mesh belt 46 having the deposition surface and the tension roller 47a between the mesh belt 46. And a rotating roller 49. The rotating roller 49 is arranged so as to abut on a seal portion 991 provided on a wall portion 990 arranged above the suction port portion 900. As a result, the vicinity of the suction port 921 is almost sealed. Then, the web V deposited on the deposition surface of the mesh belt 46 is nipped by the tension roller 47 a and the rotating roller 49 via the mesh belt 46. In addition, the air flow generation unit 800 that forms the peeling unit 310 applies the air flow generated by the blower 810 to the deposition surface of the mesh belt 46 at the downstream side of the stretching roller 47a in the transport direction of the web V, and the web V. Is peeled from the deposition surface. Since the web V is sandwiched (nipped) by the tension roller 47a and the rotating roller 49, the web V at the downstream side of the sandwiched position in the transport direction of the web V can be peeled off. That is, the position where the web V is separated from the deposition surface of the mesh belt 46 is stable, and the amount (length) of the separated web V is substantially uniform. Then, the blower 56 that constitutes the dividing section 180 divides the separated web V by sucking the separated web V, and the subdivided body 11 is formed. As a result, it is possible to reduce fluctuations in the volume of the subdivided bodies 11 transported to the deposition unit 60 side.

Further, in the sheet manufacturing apparatus 600 of the present embodiment, the air volume of the blower 56 is set to be larger than the air volume of the airflow generation unit 800. A first flow velocity sensor 840 for measuring the flow velocity of the air flow by the air flow generation unit 800 and a second flow velocity sensor 940 for measuring the flow velocity of the air flow by the blower 56 are provided. In the present embodiment, the first flow velocity sensor 840 is arranged inside the spraying part 820, and the second flow velocity sensor 940 is arranged inside the suction port 900. As the first flow velocity sensor 840 and the second flow velocity sensor 940, for example, a hot wire type flow velocity sensor can be applied. It should be noted that the present invention is not limited to the heat wire type flow velocity sensor, and for example, a vane type (hiram type) velocity meter, various velocity meters using laser light, ultrasonic waves or microwaves can be applied.

The first and second flow velocity sensors 840 and 940 are connected to the control unit 140. Then, the control unit 140 calculates the air volume due to the air flow in the spraying section 820 and the air volume due to the air flow in the suction port section 900 based on the measurement data from the first and second flow velocity sensors 840 and 940, and the air volume of both air streams. And the blower 810 and the blower 56 are controlled so that the air volume by the blower 56 is larger than the air volume by the airflow generation unit 800. Specifically, the drive motor of the blower 810 and the drive motor of the blower 56 are controlled. As a result, it is possible to suppress scattering of the defibrated material due to the air flow discharged from the spraying section 820, and to suck the subdivided body 11 through the suction port section 900. Note that the basic configuration of the control unit 140 is the same as that of the first embodiment, so a description thereof will be omitted.

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

The first sorted material that has passed through the opening of the sorting unit 40 is accumulated on the mesh belt 46, and the web V is formed. The web V is conveyed by the mesh belt 46 while being sandwiched between the tension roller 47a and the rotating roller 49. Then, the air flow generated by the air flow generation unit 800 is applied to the deposition surface of the mesh belt 46 on the downstream side of the stretching roller 47 a in the web V transport direction. As a result, the web V located on the downstream side in the transport direction with respect to the position sandwiched between the stretching roller 47a and the rotating roller 49 is separated from the mesh belt 46. A suction force by the blower 56 acts on the peeled web V. As a result, the peeled web V is divided into the subdivided bodies 11, and is conveyed to the mixing unit 50 (deposition unit 60) side. Therefore, in the sheet manufacturing apparatus 600, it is possible to prevent a plurality of defibrated materials from being entangled with each other to be supplied to the deposition unit 60 in a large lump state, and the mesh of the deposition unit 60 is not clogged. It is possible to suppress the occurrence. Then, the sheet manufacturing apparatus 600 can manufacture the sheet S having high uniformity in density and thickness.

4. Fourth Embodiment 4.1. Sheet Manufacturing Apparatus Next, a sheet manufacturing apparatus according to the fourth embodiment will be described with reference to the drawings. FIG. 18 is a diagram schematically showing the sheet manufacturing apparatus 700 according to the fourth embodiment. Hereinafter, in the sheet manufacturing apparatus 700, differences from the example of the sheet manufacturing apparatus 600 described above will be described, and description of the same points will be omitted.

As shown in FIG. 18, the sheet manufacturing apparatus 700 includes an airflow generating unit 800 that constitutes the peeling unit 310, a suction unit (the blower 56 in this embodiment) that constitutes the dividing unit 180, and the rotating body 110. The present embodiment is different from the above-described sheet manufacturing apparatus 600 in that the dividing unit 180 includes the rotating body 110.

The rotating body 110 is provided with a protrusion 114 for dividing the rotating body 110 by contacting the web V to form the subdivided body 11. In the present embodiment, the rotating body 110 is provided inside the suction port portion 900 and in the vicinity of the stretching roller 47a. The rotating body 110 is provided at a position where the protrusion 114 can contact the web V separated from the mesh belt 46 by the airflow generating unit 800, but not at the position where the protrusion 114 can contact the mesh belt 46. The rotating body 110 is arranged apart from the mesh belt 46 such that the airflow discharged from the spraying section 820 can pass between the tip of the protrusion 114 and the deposition surface of the mesh belt 46.

FIG. 19 is a diagram schematically showing the rotating body according to the present embodiment. As shown in FIG. 19, the rotating body 110 has a base 112 and a plate-shaped protrusion 114 protruding from the base 112. In the illustrated example, four protrusions 114 are provided at equal intervals. The protrusion 114 can rotate around the base 112 as an axis. The base portion 112 extends in the width direction of the web V, and the length of the protrusion 114 in the extending direction of the base portion 112 is substantially equal to the width of the mesh belt 46. The number of protrusions 114 is not particularly limited, and may be two, for example.

The form of the rotating body 110 is not limited to the above configuration. 20 and 21 are examples of diagrams schematically showing other forms of the rotating body. As shown in FIG. 20, the rotating body 110 a has a base 112 and a protrusion 114 a protruding from the base 112. Here, the plurality of protrusions 114a are arranged in the direction in which the base 112 extends, and a constant space is provided between the adjacent protrusions 114a. When the rotating body 110a is used, a portion of the web V that contacts the protrusion 114a and a portion that does not contact the protrusion 114a appear in the width direction of the web V. Therefore, the web V should be divided in a direction substantially parallel to the transport direction. You can

Further, as shown in FIG. 21, the rotating body 110b has a base 112 and a protrusion 114b protruding from the base 112. Here, the plurality of protrusions 114b are arranged in the extending direction of the base 112, and the adjacent protrusions 114b are arranged at positions displaced by about 90° in the rotation direction. When this rotating body 110b is used, a portion of the web V that comes into contact with the protrusion 114b and a portion that does not come into contact with each other appear in the width direction of the web V. Therefore, the web V should be divided in a direction substantially parallel to the transport direction. You can

The shapes of the protrusions 114, 114a, 114b are not limited to plate shapes. For example, it may be a pin shape. Even in this case, the same effect as described above can be obtained. Further, in the sheet manufacturing apparatus 700 of the present embodiment, since the web V separated by the airflow is divided, the rotating body 110 is arranged at a position farther from the mesh belt 46 than in the sheet manufacturing apparatus 100 of the first embodiment. be able to. For this reason, it is possible to make the tip of the protrusion 114 (114a, 114b) of the rotating body 111 into a sharp blade so that the web V can be easily divided.

The rotation direction of the rotating body 110 can be appropriately set depending on the discharge direction of the airflow by the airflow generation unit 800 and the like. In the present embodiment, the airflow generated by the airflow generation unit 800 is discharged from below to above. Therefore, the rotating body 110 is rotated in the direction of arrow R3 (clockwise in FIG. 18) following the discharge direction of the air flow by the air flow generation unit 800. As a result, the rotation direction of the rotating body 110 does not oppose the discharge direction of the air flow by the air flow generation unit 800, so the drive load is reduced and the web V can be easily divided.

Further, in the sheet manufacturing apparatus 700 of the present embodiment, the peripheral speed of the rotating body 110 is set to be higher than the moving speed of the mesh belt 46 (conveying speed of the web V). For example, a speed detection sensor (not shown) such as a rotary encoder for detecting the rotation speed is arranged on each of the tension roller 47 and the rotating body 110. Then, the control unit 140 compares the peripheral speed of the rotating body 110 with the moving speed of the mesh belt 46 based on the detection data of the speed detecting sensor, and the peripheral speed of the rotating body 110 is calculated from the moving speed of the mesh belt 46. For example, the drive motor for rotating the rotating body 110 is controlled so that the speed becomes faster. For example, when the moving speed of the mesh belt 46 is 20 mm or more and 100 mm or less per second, the peripheral speed of the rotating body 110 is controlled to be twice or more the moving speed of the mesh belt. Thereby, the web V can be divided more finely. Note that the basic configuration of the control unit 140 is the same as that of the first embodiment, so a description thereof will be omitted.

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

Even when the air volume of the blower 56 is suppressed, the web V can be divided by the rotating body 110 to form the subdivided body 11. Therefore, energy consumption due to the blower 56 can be suppressed.

In the airflow generation unit 800 according to the third and fourth embodiments, the airflow is discharged toward the mesh belt 46 to separate the web V from the mesh belt 46, but the configuration is not limited to this. For example, in the airflow generation unit 800, the web V may be separated from the mesh belt 46 by sucking air. Even in this case, the same effect as described above can be obtained.

In addition, the sheet S manufactured by the sheet manufacturing apparatus according to the present invention mainly indicates a sheet-shaped sheet. However, the shape is not limited to the 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 an embodiment in which a thin sheet is formed from pulp or waste paper as a raw material, 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 than paper and have low strength. Common non-woven fabrics, fiber boards, tissue paper (tissue paper for cleaning), kitchen paper, cleaners, filters, liquid (waste ink and oil) absorbers, sound absorbing materials, Includes insulation, cushioning, mats, etc. The raw materials may be plant fibers such as cellulose, PET (polyethylene terephthalate), chemical fibers such as polyester, and animal fibers such as wool and silk.

The present invention may omit some of the configurations or combine the embodiments and modifications within the scope of the features and effects described in the present application. Note that the manufacturing unit 102 may omit a part of the configuration, add another configuration, or replace the configuration with a known configuration as long as the sheet can be produced.

The present invention includes configurations substantially the same as the configurations described in the embodiments (for example, configurations having the same function, method and result, or configurations having the same object and effect). Further, the invention includes configurations in which non-essential parts of the configurations described in the embodiments are replaced. Further, the invention includes a configuration that achieves the same effect as the configuration described in the embodiment or a configuration that can achieve the same object. Further, the invention includes configurations in which known techniques are added to the configurations described in the embodiments.

DESCRIPTION OF SYMBOLS 1... Hopper, 2,3,4,5,7,7a,8... Tube, 9... Hopper, 10...Supply part, 11...Subdivision body, 12...Coarse crushing part, 14...Coarse crushing blade, 20...Fibration Part, 22... Inlet port, 24... Outlet port, 30... Classifying part, 31... Inlet port, 32... Cylindrical part, 33... Reverse cone part, 34... Lower outlet port, 35... Upper outlet port, 36... Receiving part, 40... Sorting part, 40a... Housing part, 40b... Pile seal, 42... Inlet port, 44... Discharge port, 45... First web forming part, 46... Mesh belt, 47, 47a... Tension roller, 48... Suction part , 49... rotary roller, 50... mixing section, 52... additive supply section, 54... tube, 56... blower, 60... deposition section, 62... inlet, 70... second web forming section, 72... mesh belt, 74 ... tension roller, 76... suction mechanism, 78... humidity control section, 80... sheet forming section, 82... first binding section, 84... second binding section, 86... heating roller, 90... cutting section, 92... 1st cutting part, 94... 2nd cutting part, 96... Ejection part, 100, 200, 300, 400, 500, 600, 700, 800... Sheet manufacturing apparatus, 102... Manufacturing part, 110, 110a, 110b... Rotating body , 112... Base part, 114, 114a, 114b... Projection part, 120... Detection part, 140... Control part, 141... Operation part, 142... Output part, 143... Storage part, 144... Storage medium, 145... Processing part, 180 ... Dividing part, 310... Peeling part, 312... Fixing plate, 313... Main surface, 314... End, 412... Fixing plate, 440... Cover part, 442... Pile seal, 478... Humidity adjusting part, 512... Air flow generating part, Reference numeral 810... Blower, 815, 815a... Tube, 820, 820a, 820b... Spraying section, 821, 821a, 821b... Opening section, 822... Nozzle, 825... Partition wall, 840... First flow rate sensor, 880... Humidity adjusting section, 900, 900a, 900b... Suction port portion, 921..., 921a... Suction port, 925... Partition wall, 940... Second flow velocity sensor, A... Air flow, S... Sheet, V, W... Web.

Claims (15)

A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulation unit ,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by being divided by contacting the web,
The web forming unit includes a belt having the deposition surface and at least two rollers around which the belt is stretched,
The peeling section has a fixing plate,
The fixing plate is a sheet manufacturing apparatus, characterized by contact with the belt facing the roller located at the rotor side of the roller. A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulation unit,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by being divided by contacting the web,
The peeling portion, the rotating body features and be Resid over preparative production apparatus further comprising a flow generator unit for the web to generate a direction of air flow away from the belt in the vicinity of. A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material deposited by the depositing unit,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by dividing by contacting the web,
The web forming unit has a belt having the deposition surface,
According to the moving speed of the belt, sheet manufacturing apparatus that Symbol mounting to characterized in that it has a control unit for controlling the rotational speed of the rotating body. A detection unit for detecting the thickness of the web,
The sheet manufacturing apparatus according to claim 3 , wherein the control unit controls the moving speed of the belt based on the thickness of the web detected by the detection unit. A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulation unit,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by being divided by contacting the web,
A detection unit for detecting the thickness of the web,
On the basis of the thickness of said detected web by the detecting unit, wherein the to Resid over preparative manufacturing apparatus that has a control unit for controlling the rotational speed of the rotating body. A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit for forming a sheet using the defibrated material accumulated by the accumulation unit,
The web forming unit,
A deposition surface on which the web is deposited,
A stripping portion for stripping the web deposited on the deposition surface from the deposition surface,
The dividing section includes a rotating body having a protrusion for forming a subdivided body by being divided by contacting the web,
The peeling section has an airflow generating section,
The sheet manufacturing apparatus , wherein the air flow generation unit separates the web from the deposition surface by an air flow generated at an acute angle with respect to the deposition surface. The sheet manufacturing apparatus according to claim 6 , wherein the web separated from the deposition surface is divided in a direction substantially parallel to the conveyance direction of the web by the airflow generated by the airflow generation unit. Airflow against the deposition surface, a sheet manufacturing apparatus according to claim 6 or 7, characterized in that it is wetted tone. The dividing section, a sheet manufacturing apparatus according to any one of claims 6-8, characterized in that it comprises a suction unit for forming a subdivided body divided by sucking the web. The web forming unit, a belt having the deposition surface, a support unit for supporting the belt,
A rotating roller that faces the support portion between the belt,
The web deposited on the deposition surface is sandwiched by the support portion and the rotating roller,
The peeling portion, on the downstream side in the transport direction of the web with respect to the support portion, the airflow generated by the airflow generating portion is applied to the deposition surface to peel the web from the deposition surface,
The sheet manufacturing apparatus according to claim 9 , wherein the dividing unit sucks the web peeled by the peeling unit by the suction unit. The sheet manufacturing apparatus according to claim 9 , wherein the air volume generated by the suction section is larger than the air volume generated by the air flow generation section. Sheet manufacturing apparatus according to any one of claims 1 to 1 0, characterized in that it comprises a supply section for supplying the additive to the subdivision thereof. The web forming unit,
A mesh belt on which the web is deposited,
From a surface opposite to the surface of the mesh belt on which the web is deposited, a suction unit that sucks the defibrated material selected by the selection unit,
The sheet manufacturing apparatus according to any one of claims 1 to 12 , further comprising: A defibration unit for defibrating a raw material containing fibers into a defibrated material,
A selection unit for selecting the defibrated material defibrated by the defibration unit,
A web forming unit that forms a web in which the defibrated material sorted by the sorting unit is deposited,
A dividing portion that divides the web formed by the web forming portion to form a subdivided body,
A deposition unit that deposits the defibrated material that constitutes the subdivided body,
A forming unit that forms a sheet using the defibrated material accumulated by the accumulation unit,
A tube supplied with the subdivided body and connected to the deposition section;
A blower that conveys the subdivided body from the tube to the deposition unit,
Have
The sheet manufacturing apparatus, wherein the dividing section is a rotating body including a protrusion for dividing the web by contacting the web to form a subdivided body. The web forming unit has a belt having the deposition surface and a roller on which the belt is stretched,
The sheet manufacturing apparatus according to claim 14, wherein the rotating direction of the rotating body and the rotating direction of the roller are opposite to each other.

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