Sheet manufacturing apparatus

Abstract

A sheet manufacturing apparatus includes a manufacturing mechanism that manufactures a sheet, a transport mechanism that transports the manufactured sheet, a cutter that cuts the transported sheet, a door, and a spilled paper winder, in which the transport mechanism causes the sheet to spill from between the manufacturing mechanism and the cutter into an evacuation space in response to a detection of a transport failure of the manufactured sheet, and the door is switchable between an open state in which a user can access the evacuation space and the spilled paper winder and a closed state in which the user cannot access the evacuation space and the spilled paper winder.

Description

[0001] The present application is based on, and claims priority from JP Application Serial Number 2025-009683, filed January 23, 2025, the disclosure of which is hereby incorporated by reference herein in its entirety.BACKGROUND1. Technical Field

[0002] The present disclosure relates to a sheet manufacturing apparatus.2. Related Art

[0003] WO 2018 / 043030 discloses a sheet manufacturing apparatus including a defibration section that defibrates a raw material containing fibers in the atmosphere, an accumulation section that discharges the defibrated material, a web forming section that operates a mesh belt that accumulates the defibrated material to form a web, a sheet forming section that forms a sheet from the web, a cutting section that cuts the sheet into a preset size, and a control section that executes a stop control with a cut operation of the cutting section as a trigger when an instruction to stop the apparatus is issued.

[0004] In the sheet manufacturing apparatus of W02018 / 043030, since mechanisms of each section responsible for each step, such as defibration, accumulation, sheet formation, and sheet cutting are interlocked with each other, for example, when a transport failure of sheets occurs, a defective sheet remains in the apparatus. However, when a large number of defective sheets are spilled out of a transport path in a disorderly manner, it is difficult to remove the sheets.SUMMARY

[0005] According to an aspect of the present disclosure, there is provided a sheet manufacturing apparatus including a manufacturing mechanism that manufactures a sheet, a transport mechanism that transports the manufactured sheet, a cutter that cuts the transported sheet, a door, and a spilled paper winder, in which the transport mechanism causes the sheet to spill from between the manufacturing mechanism and the cutter into an evacuation space in response to a detection of a transport failure of the manufactured sheet, and the door is switchable between an open state in which a user is able to access the evacuation space and the spilled paper winder and a closed state in which the user is not able to access the evacuation space and the spilled paper winder.BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG. 1 is a perspective view showing an appearance of a sheet manufacturing apparatus according to an embodiment.

[0007] FIG. 2 is a schematic view illustrating a configuration of the sheet manufacturing apparatus according to the embodiment.

[0008] FIG. 3 is a schematic view illustrating a configuration of a transport unit.

[0009] FIG. 4 is a schematic view illustrating a configuration of an upstream transport unit.

[0010] FIG. 5 is a perspective view showing a configuration of a spilled paper winder.

[0011] FIG. 6 is a perspective view showing an appearance of a storage section.

[0012] FIG. 7 is a perspective view showing an appearance of a holding section.

[0013] FIG. 8 is a front view showing a display example of a display section.

[0014] FIG. 9 is a flowchart showing a control method of the sheet manufacturing apparatus.

[0015] FIG. 10 is a schematic view showing an opening operation and a function of the upstream transport unit.

[0016] FIG. 11 is an operation explanatory view related to the spilled paper winder displayed on the display section.

[0017] FIG. 12 is an operation explanatory view related to the spilled paper winder displayed on the display section.

[0018] FIG. 13 is an operation explanatory view related to the spilled paper winder displayed on the display section.

[0019] FIG. 14 is an operation explanatory view related to the spilled paper winder displayed on the display section.

[0020] FIG. 15 is an operation explanatory view related to the spilled paper winder displayed on the display section.

[0021] FIG. 16 is an operation explanatory view related to the spilled paper winder displayed on the display section.DESCRIPTION OF EMBODIMENTS

[0022] The following embodiment exemplifies a sheet manufacturing apparatus 1 that regenerates a sheet from a material containing fibers, such as wastepaper, in a dry manner as a sheet manufacturing apparatus of the present disclosure. Hereinafter, the sheet manufacturing apparatus 1 will be described with reference to the drawings. The sheet manufacturing apparatus of the present disclosure is not limited to a dry type, and may be a wet type. In the present specification, the dry type means that it is carried out in the atmosphere, such as the atmosphere, not in the liquid.

[0023] In the present specification, when it is described as "same", "identical", or "simultaneous", it is assumed that a case where it is the same in a range in which a function is not impaired is included. Therefore, for example, "the dimensions of both are the same" allows a measurement error and a manufacturing variation of a member. For example, the difference in dimension between both may be within ±5% of one dimension, and particularly preferably within ±3%.

[0024] In each drawing, X, Y, and Z represent three spatial axes that are orthogonal to each other. In the present specification, the directions along these axes are referred to as an X-axis direction, a Y-axis direction, and a Z-axis direction. When specifying the direction, the positive direction is "+", the negative direction is "-", and by using the positive and negative signs together in the direction notation, the direction in which the arrow points in each figure will be described as the + direction, and the direction opposite to the arrow will be described as the - direction.

[0025] The Z-axis direction indicates a gravity direction, a +Z direction indicates a vertically upward direction, and a -Z direction indicates a vertically downward direction. A plane including the X-axis and the Y- axis is described as an X-Y plane, a plane including the X- axis and the Z-axis is described as an X-Z plane, and a plane including the Y-axis and the Z-axis is described as a Y-Z plane. The X-Y plane is a horizontal plane. The three X, Y, and Z spatial axes that do not limit the positive direction and the negative direction will be described as the X-axis, the Y-axis, and the Z-axis.

[0026] The X-axis direction is a horizontal direction along an installation surface, which is a horizontal plane, on which the sheet manufacturing apparatus 1 is installed. The Y-axis direction is the horizontal direction along the installation surface on which the sheet manufacturing apparatus 1 is installed. The Z-axis direction is a normal direction with respect to the installation surface on which the sheet manufacturing apparatus 1 is installed, and is a height direction of the sheet manufacturing apparatus 1.

[0027] In the following description, the +Z direction may be referred to as an "upward direction", and the -Z direction may be referred to as a "downward direction". In the following description, in the sheet manufacturing apparatus 1, the front in a transport direction of a raw material, a web W, sheets P1, P2, and P3, or the like may be referred to as "downstream", and the side going upstream in the transport direction may be referred to as "upstream". For convenience of illustration, the size of each member is different from the actual size.

[0028] As shown in FIG. 1, the sheet manufacturing apparatus 1 according to the present embodiment has a substantially rectangular parallelepiped appearance. A front surface of the sheet manufacturing apparatus 1 faces the -X direction and is parallel to the Y-Z plane.

[0029] The sheet manufacturing apparatus 1 is surrounded by a plurality of exterior panels 11. A part of the exterior panel 11 is a door 84 that is openable and closeable. The door 84 is changeable between an open state in which a user is able to access the inside of the sheet manufacturing apparatus 1 and a closed state in which the user is not able to access the inside of the sheet manufacturing apparatus 1. In addition, the door 84 includes a key 14 that is operated by control of a processor 5P described below (see FIG. 11). The key 14 locks the door 84 such that the door 84 is not opened.

[0030] A display section 12 is disposed on the front surface of the sheet manufacturing apparatus 1. The display section 12 is installed on the front surface of the sheet manufacturing apparatus 1. The display section 12 is a touch panel type liquid crystal display, and displays an operation status of the sheet manufacturing apparatus 1 or an error occurrence content under the control of the processor 5P described below to provide a notification to the user.

[0031] A hatch 133 for feeding shredded pieces of wastepaper that is a raw material for sheet manufacturing is provided on the exterior panel 11 of the sheet manufacturing apparatus 1. The hatch 133 is provided above an end portion of the sheet manufacturing apparatus 1 on the -Y side, and has a structure that is opened and closed while rotating using a hinge. In addition, a tray 191 is disposed at substantially the center of the sheet manufacturing apparatus 1. The tray 191 is loaded with the manufactured and discharged sheet P3. The exterior panel 11 is not disposed on the -X side of the tray 191, and the user can access the tray 191 from the front surface.

[0032] As illustrated in FIG. 2, the sheet manufacturing apparatus 1 according to the present embodiment includes a first unit group 101, a second unit group 102, and a third unit group 103. The first unit group 101, the second unit group 102, and the third unit group 103 are supported by a frame (not illustrated). In FIG. 2, directions, in which a paper piece C, a sheet P3, slit pieces S, an unnecessary scrap material, or the like moves, are indicated by white arrows. In the following description, a set of the paper pieces C composed of a plurality of paper pieces C is also simply referred to as the paper piece C.

[0033] The sheet manufacturing apparatus 1 manufactures the sheet P3 from the paper piece C such as wastepaper. In a front view from the -X direction, in the sheet manufacturing apparatus 1, the first unit group 101, the third unit group 103, and the second unit group 102 are disposed in order from the -Y direction to the +Y direction.

[0034] The paper piece C is transported from the first unit group 101 to the second unit group 102 via a pipe 21 crossing an inside of the third unit group 103. Then, the paper piece C is formed of fibers by defibrating or the like in the second unit group 102, and is a mixture containing a binder or the like. The mixture is transported to the third unit group 103 via a pipe 24. The mixture is formed into the continuous sheet P1 after being formed into the web W by the third unit group 103. The continuous sheet P1 is cut by the first unit group 101 to form the sheet P3.

[0035] The first unit group 101 includes the hatch 133, a raw material supply device 13, a measurement section 15, a merging section 17, and the pipe 21. In the first unit group 101, the configurations thereof are disposed in the above order from the upstream to the downstream. In addition, the first unit group 101 includes a cutter 913, a downstream transport unit 82 of a transport unit 80, and the tray 191.

[0036] The first unit group 101 includes a first cutting section 832 and a second cutting section 834. The first cutting section 832 cuts the continuous sheet P1 into the cut sheet P2. The second cutting section 834 cuts the cut sheet P2 into a sheet P3 having a predetermined shape. The first cutting section 832 and the second cutting section 834 are cutters.

[0037] In addition, the first unit group 101 includes a water supply section 67. The water supply section 67 is a water storage tank. The water supply section 67 supplies water for humidification to each of a first humidification section 65 and a second humidification section 66 (to be described later) through a water supply pipe (not illustrated).

[0038] The raw material supply device 13 stores the paper piece C, which is the raw material of the sheet P3, and supplies the paper piece C to the downstream. The raw material supply device 13 includes a raw material inlet 131, a storage section 132, and a discharge section 140.

[0039] The paper piece C is fed from the raw material inlet 131 into the storage section 132. The paper piece C contains fibers such as cellulose, and is, for example, shredded wastepaper. Inside the storage section 132, humidified air is supplied from a second humidification section 66 included in the third unit group 103.

[0040] The paper piece C is temporarily stored in the storage section 132 and then transported to the measurement section 15 via the discharge section 140. The sheet manufacturing apparatus 1 may include a shredder that shreds the paper piece C or the like on the upstream of the storage section 132.

[0041] The measurement section 15 includes a sensor section 15a and a supply mechanism (not illustrated). The sensor section 15a measures the mass of the paper piece C. The supply mechanism supplies the paper piece C weighed by the sensor section 15a to the downstream merging section 17. That is, the measurement section 15 weighs the paper piece C by the sensor section 15a for each predetermined mass, and quantitatively supplies the paper piece C to the downstream merging section 17 by the supply mechanism.

[0042] In the present embodiment, a load cell is applied as the sensor section 15a. The predetermined mass of the paper piece C weighed by the sensor section 15a is, for example, several g to several tens of g.

[0043] A known technique such as a feeder that can be opened and closed, or the like can be applied to the supply mechanism. The supply mechanism may be configured to be included in the sensor section 15a.

[0044] The weighing and supply of the paper piece C by the measurement section 15 are performed in batch processing. That is, the supply of the paper piece C from the measurement section 15 to the merging section 17 is intermittently performed. The measurement section 15 may have a plurality of combinations of the sensor section 15a and the supply mechanism, and may improve the efficiency of weighing and supply by actuating the plurality of sensor sections 15a in time differences. The sheet manufacturing apparatus 1 includes the two sensor sections 15a and the supply mechanisms respectively attached to the sensor sections 15a. As a result, the paper piece C is alternately transported to the merging section 17 from two sets of the sensor sections 15a and the supply mechanisms at regular intervals.

[0045] In the merging section 17, the shredded pieces of the slit pieces S, which are supplied from the cutter 913, are merged and mixed with the paper piece C supplied from the measurement section 15. The slit pieces S and the cutter 913 will be described later. The paper piece C in which the above shredded pieces are mixed flows from the merging section 17 into the pipe 21.

[0046] The pipe 21 transports the paper piece C from the first unit group 101 to the second unit group 102 by a suction airflow generated by a downstream defibration section 31.

[0047] The second unit group 102 includes the defibration section 31, a separation section 32, the pipe 23, a mixing section 33, and a pipe 24, which are a dry-type defibration machine. In the second unit group 102, the configurations thereof are disposed in the above order from the upstream to the downstream. In addition, the second unit group 102 also includes a pipe 25 coupled to the separation section 32, a collection section 35, a compressor 38, and a power supply section 39.

[0048] The paper piece C transported through the pipe 21 flows into the defibration section 31. The defibration section 31 defibrates the paper piece C supplied from the measurement section 15 in a dry manner to form fibers. A known defibration mechanism can be applied to the defibration section 31.

[0049] Examples of the configuration of the defibration section 31 include the following. The defibration section 31 includes a stator and a rotor. The stator has a substantially cylindrical inner surface. The rotor is installed inside the stator and rotates along the inner surface of the stator. The paper piece C is interposed between the inner surface of the stator and the rotor, and is defibrated by a shear force generated between the stator and the rotor. As a result, in the paper piece C, the entangled fibers included in the paper piece are unraveled. The paper piece C are transported to the separation section 32 as fibers.

[0050] The separation section 32 separates the defibrated fibers. Specifically, the separation section 32 removes the unnecessary components for manufacturing the sheet P3, which is included in the fiber. Specifically, the separation section 32 separates the relatively long fibers and the relatively short fibers. The relatively short fibers are separated by the separation section 32 because the relatively short fibers may cause a decrease in strength of the sheet P3. In addition, the separation section 32 also separates and eliminates coloring materials, additives, or the like included in the paper piece C. A known technique such as a disc mesh method can be applied to the separation section 32.

[0051] The air humidified by the second humidification section 66 of the third unit group 103 is supplied into an inside of the separation section 32.

[0052] The defibrated fibers are transported to the mixing section 33 via the pipe 23 after relatively short fibers or the like are eliminated. The unnecessary components such as relatively short fibers and coloring materials are discharged to the collection section 35 via the pipe 25.

[0053] The mixing section 33 mixes the defibrated material with a binder or the like in the atmosphere to form a mixture. Although not illustrated, the mixing section 33 includes a flow path through which the defibrated material is transported, a fan, a hopper, a supply pipe, and a valve.

[0054] The hopper communicates with a flow path of the defibrated material via the supply pipe. The valve is provided in the supply pipe between the hopper and the flow path. The hopper supplies a binder such as starch into the flow path. The valve adjusts the mass of the binder supplied from the hopper to the flow path. As a result, a mixing ratio of the fiber and the binder is adjusted.

[0055] The mixing section 33 may have a similar configuration for supplying coloring materials, additives, or the like in addition to the configuration for supplying the binder.

[0056] The fan of the mixing section 33 mixes the defibrated material with the binder or the like in the atmosphere while the defibrated material containing the fibers is transported to the downstream by an airflow generated, to form a mixture. The mixture flows from the mixing section 33 into the pipe 24.

[0057] The collection section 35 includes a filter (not illustrated). The filter filters out unnecessary components such as relatively short fibers transported by the airflow from the pipe 25.

[0058] The compressor 38 generates compressed air. In the above filter, clogging may occur due to fine particles or the like in the unnecessary components. The compressed air generated by the compressor 38 can be blown onto the filter to blow off adhered particles and clean the filter.

[0059] The power supply section 39 includes a control section 5 and a power supply device (not illustrated) that supplies power to the sheet manufacturing apparatus 1. The power supply section 39 distributes the power supplied from the outside to each configuration of the sheet manufacturing apparatus 1.

[0060] The control section 5 includes a processor 5P composed of a central processing unit (CPU) or the like and a storage section (not illustrated) including a random access memory (RAM), a read only memory (ROM), or the like. Various programs for controlling the sheet manufacturing apparatus 1 are stored in the storage section. The processor 5P operates in accordance with the program to control the operation of the sheet manufacturing apparatus 1. The control section 5 may include dedicated hardware (application-specific integrated circuit: ASIC) that executes at least a part of various processes.

[0061] The processor 5P includes a CPU and a memory such as the RAM and the ROM. The memory stores program codes or instructions configured to cause the CPU to execute processing. A memory, that is, a computer-readable medium, includes anything accessible by a general-purpose or dedicated computer.

[0062] The control section 5 is electrically coupled to each configuration such as a sheet forming unit 70 and a transport unit 80, a sheet sensor 850 (see FIG. 3), and a movable unit 811 (see FIG. 3) described below, and integrally controls the actuation of these configurations. In particular, when the transport failure of the cut sheet P2 or the like occurs in the transport path, the control section 5 issues an instruction to each configuration to take a countermeasure against the transport failure. Details of the above countermeasure will be described later.

[0063] The third unit group 103 accumulates and compresses the mixture, which is a material containing fibers, to form the continuous sheet Pl. The third unit group 103 includes an accumulation section 50, a first transport section 61, a second transport section 62, a first humidification section 65, a second humidification section 66, a drainage section 68, a sheet forming unit 70, and an upstream transport unit 81 of the transport unit 80.

[0064] In the third unit group 103, the accumulation section 50, the first transport section 61, the second transport section 62, the first humidification section 65, the sheet forming unit 70, and the upstream transport unit 81 are disposed in the above order from the upstream to the downstream. The second humidification section 66 is disposed below the first humidification section 65.

[0065] The accumulation section 50 accumulates the mixture including the separated fibers in the atmosphere to generate the web W. The accumulation section 50 includes a drum member 53, a blade member 55 installed in the drum member 53, a housing 51 that accommodates the drum member 53, and a suction section 59. The mixture is taken into the drum member 53 from the pipe 24.

[0066] The first transport section 61 is disposed below the accumulation section 50. The first transport section 61 includes a mesh belt 61a and five tension rollers that tension the mesh belt 61a. The suction section 59 faces the drum member 53 with the mesh belt 61a interposed therebetween in a direction along the Z-axis.

[0067] The blade member 55 is located inside the drum member 53 and is rotationally driven by a motor (not illustrated). The drum member 53 is a half-cylindrical sieve. A mesh having a sieve function is provided on a side surface of the drum member 53 facing the downward. The drum member 53 allows particles such as fibers and the mixture, which are smaller than the size of a mesh opening of the sieve mesh to pass from the inside to the outside.

[0068] The mixture is released to the outside of the drum member 53 by being stirred by the rotating blade member 55 in the drum member 53. The air humidified by the second humidification section 66 is supplied into the drum member 53.

[0069] The suction section 59 is disposed below the drum member 53. The suction section 59 sucks the air in the housing 51 through a plurality of holes of the mesh belt 61a. The plurality of holes of the mesh belt 61a allow the air to pass therethrough, and it is difficult for fibers, binders, or the like included in the mixture to pass therethrough. As a result, the mixture released to the outside of the drum member 53 is sucked downward together with the air. The suction section 59 is a known suction device such as a blower.

[0070] The mixture is dispersed in the atmosphere inside the housing 51, and is accumulated on an upper surface of the mesh belt 61a by gravity and suction by the suction section 59, to form the web W.

[0071] The mesh belt 61a is an endless belt and is stretched by five tension rollers. The mesh belt 61a is rotated counterclockwise in FIG. 2 by rotation of the tension roller. As a result, the mixture is continuously accumulated on the mesh belt 61a, and the web W is formed. The web W includes a relatively large amount of the air and is soft and swollen. The first transport section 61 transports the formed web W to the downstream by rotating the mesh belt 61a.

[0072] The second transport section 62 transports the web W instead of the first transport section 61 to the downstream of the first transport section 61. The second transport section 62 peels off the web W from the upper surface of the mesh belt 61a and transports the web W toward the sheet forming unit 70. The second transport section 62 is disposed above the transport path of the web W and slightly on the upstream of a starting point of the mesh belt 61a on a return side. The +Y direction of the second transport section 62 partially overlaps the -Y direction of the mesh belt 61a in the vertical direction.

[0073] The second transport section 62 includes a transport belt, a plurality of rollers, and a suction mechanism (not illustrated). The transport belt is provided with a plurality of holes through which the air passes. The transport belt is stretched by the plurality of rollers and is rotated by rotation of the rollers.

[0074] The second transport section 62 adsorbs an upper surface of the web W to a lower surface of the transport belt by a negative pressure generated by the suction mechanism. In this state, the web W is adsorbed to the transport belt and transported to the downstream by rotation of the transport belt.

[0075] The first humidification section 65 humidifies the web W containing the fibers accumulated in the accumulation section 50 of the third unit group 103. Specifically, the first humidification section 65 is, for example, a mist humidifier, and supplies mist M, which is transported by the second transport section 62, from a lower part to the web W to humidify the web W. The first humidification section 65 is disposed below the second transport section 62 and faces the web W transported by the second transport section 62 in a direction along the Z-axis.

[0076] By humidifying the web W with the mist M, a function as a binder of starch is promoted, and strength of the sheet P3 is improved. In addition, since the web W is humidified from the lower part, the falling of the mist- derived droplets onto the web W is prevented. Moreover, since the web W is humidified from an opposite side of a contact surface between the transport belt and the web W, sticking of the web W to the transport belt is reduced. The second transport section 62 transports the web W to the sheet forming unit 70.

[0077] The sheet forming unit 70 accumulates a mixture that is a material containing fibers to form a web W, and then compresses the web W to form the continuous sheet Pl. The sheet forming unit 70 includes processing rollers 71 and 72. A pair of the processing rollers 71 and 72 are formed, each of which is installed with an electric heater to have a function of raising a temperature of a surface of the rollers.

[0078] The processing rollers 71 and 72 are members having a substantially cylindrical shape. A rotation shaft of the processing roller 71 and a rotation shaft of the processing roller 72 are disposed along the X axis. The processing roller 71 is disposed substantially above the transport path of the web W, and the processing roller 72 is disposed substantially below the transport path of the web W.

[0079] The processing rollers 71 and 72 are rotationally driven by a stepping motor (not illustrated). The web W is sent out to the downstream by being heated and pressurized as the web W is interposed between the processing roller 71 and the processing roller 72. That is, the web W continuously passes through the sheet forming unit 70 and is press-formed by being heated. By using the processing rollers 71 and 72 as a pair of forming members, the web W can be efficiently heated and pressurized.

[0080] The web W passes through the sheet forming unit 70, so that the web W is formed into the continuous sheet P1 by reducing the air included in the web W and binding the fibers to each other using the binder from a relatively soft state including a large amount of air. The continuous sheet P1 is transported to the first unit group 101 by the upstream transport unit 81.

[0081] The second humidification section 66 is disposed below the first humidification section 65. A known evaporation type humidification device can be applied to the second humidification section 66. Examples of the evaporation type humidification device include a device that evaporates moisture by blowing the air onto a wet nonwoven fabric or the like to generate humidified air.

[0082] The second humidification section 66 humidifies a predetermined region of the sheet manufacturing apparatus 1. The predetermined region is one or more of the storage section 132, the separation section 32, and the inside of the drum member 53 of the accumulation section 50. Specifically, the air humidified by the second humidification section 66 is supplied to the region via a plurality of pipes (not illustrated). In each of the above configurations, the humidified air suppresses charging of the paper piece C, the fibers, or the like, and prevents the same from adhering to the members due to static electricity.

[0083] The drainage section 68 is a drainage tank. The drainage section 68 is used in the first humidification section 65, the second humidification section 66, and the like, and collects and stores the old moisture. The drainage section 68 can be removed from the sheet manufacturing apparatus 1 as necessary and can discard the accumulated water.

[0084] The continuous sheet P1 transported to the first unit group 101 reaches the first cutting section 832 via a transport roller pair 821, which will be described later, of the downstream transport unit 82. The first cutting section 832 cuts the continuous sheet P1 in a direction intersecting the transport direction, for example, in a direction along the X-axis. The continuous sheet P1 is cut into the cut sheet P2 by the first cutting section 832. The cut sheet P2 is transported from the first cutting section 832 to the second cutting section 834.

[0085] The second cutting section 834 cuts the cut sheet P2 in the transport direction, for example, in a direction along the Y-axis. Specifically, the second cutting section 834 cuts the vicinity of both sides of the cut sheet P2 in a direction along the X-axis. The size of the sheet P3 to be manufactured can be adjusted by the first cutting section 832 and the second cutting section 834. As a result, the cut sheet P2 is formed of the sheet P3 having a predetermined shape such as A4 size or A3 size.

[0086] When the cut sheet P2 is cut into the sheet P3 by the second cutting section 834, the slit pieces S, which are scrap materials, are generated. The slit pieces S are transported in the substantially -Y direction to reach the cutter 913, which is a shredder. The cutter 913 shreds the slit piece S and supplies the shredded pieces to the merging section 17. A mechanism for weighing the shredded pieces of the slit pieces S and supplying the shredded pieces to the merging section 17 may be installed between the cutter 913 and the merging section 17. In addition, a storage section 840 is disposed above the first cutting section 832. The storage section 840 detachably holds a spilled paper winder 841 described below.

[0087] The sheet P3 is transported substantially upward and is accumulated on the tray 191. As described above, the sheet P3 is manufactured by the sheet manufacturing apparatus 1. The sheet P3 can be applied as an alternative to, for example, copy paper or the like.

[0088] In the present embodiment, the manufacturing mechanism that manufactures the continuous sheet P1 includes the raw material supply device 13, the measurement section 15, the merging section 17, the defibration section 31, the separation section 32, the mixing section 33, the accumulation section 50, the first transport section 61, the second transport section 62, the sheet forming unit 70, and the like. When a fiber suitable for accumulation in the accumulation section 50 is supplied as a raw material and the scrap material described below is not used, the separation section 32 is not required from the merging section 17. That is, the manufacturing mechanism is not limited to the configuration exemplified in the present embodiment, and can be a manufacturing mechanism as long as the sheet can be produced regardless of the configuration.

[0089] As shown in FIG. 3, the transport unit 80 is a unit having a path through which the sheet P1, the sheet P2, and the sheet P3 are transported. The transport unit 80 includes the upstream transport unit 81, the downstream transport unit 82, and a sheet sensor 850. The transport unit 80 corresponds to a transport mechanism. In addition, the transport unit 80 includes transport roller pairs 813, 815, 821, and 823 as a plurality of transport rollers that are arranged along respective transport path to transport the continuous sheet P1, the cut sheet P2, and the sheet P3. The transport roller pairs 813, 815, 821, and 823 are rotationally driven by a drive motor (not illustrated).

[0090] In the transport unit 80, the transport roller pair 813, the transport roller pair 815, the transport roller pair 821, the first cutting section 832, the transport roller pair 823, the sheet sensor 850, and the second cutting section 834 are disposed in this order from the sheet forming unit 70 to the downstream.

[0091] The upstream transport unit 81 includes a movable unit 811 and a first transport roller group 810 including a part of the plurality of transport rollers. The first transport roller group 810 includes the transport roller pairs 813 and 815. The transport roller pair 813 is composed of an upper side roller 813a and a lower side roller 813b. The transport roller pair 815 is composed of an upper side roller 815a and a lower side roller 815b

[0092] Since the continuous sheet P1 is interposed and transported between the upper side roller 813a and the lower side roller 813b and between the upper side roller 815a and the lower side roller 815b, the transportability is improved. The transport roller pair 815 is an example of a first transport roller.

[0093] The movable unit 811 includes an opening mechanism described below. Details of the movable unit 811 and the opening mechanism will be described below.

[0094] The downstream transport unit 82 includes a second transport roller group 820 including a plurality of transport rollers installed on the downstream in the transport direction with respect to the first transport roller group 810 among the plurality of transport rollers. The second transport roller group 820 includes the transport roller pairs 821 and 823.

[0095] The sheet sensor 850 is an example of an abnormality detection sensor, and detects an abnormality in the transport of the cut sheet P2 in the transport unit 80. Specifically, the sheet sensor 850 is disposed at an upper side of the transport path of the cut sheet P2 between the transport roller pair 823 and the second cutting section 834, and vertically faces the cut sheet P2 transported along the transport path.

[0096] The sheet sensor 850 is, for example, an optical sensor, measures reflected light emitted by itself, and transmits a detection result to the processor 5P. The processor 5P determines the presence or absence of the cut sheet P2 from the reflectance of the reflected light with respect to the emitted light. A reflection member that reflects the light emitted by the sheet sensor 850 may be installed in the transport path of the cut sheet P2 that the sheet sensor 850 faces.

[0097] When the cut sheet P2 is not transported to between the transport roller pair 823 and the second cutting section 834 during the actuation of the sheet manufacturing apparatus 1, it is estimated that the transport failure of the sheet P1 or the sheet P2 has occurred upstream. That is, the occurrence of the transport failure is a transport abnormality of the cut sheet P2 or the continuous sheet P1, and a countermeasure is required. In the sheet manufacturing apparatus 1, the opening mechanism described below performs an opening operation as a countermeasure against the transport failure.

[0098] The disposition of the sheet sensor 850 is not limited above. The sheet sensor 850 may be installed at one or more locations of the transport path of the continuous sheet P1 and the transport path of the sheet P3 in addition to the transport path of the cut sheet P2.

[0099] The plurality of transport rollers are also disposed downstream of the second cutting section 834 and transport the sheet P3 to the tray 191. The slit pieces S are transported to the cutter 913 by a slit-piece transport roller group 911.

[0100] As shown in FIG. 4, the upstream transport unit 81 includes the movable unit 811, a rotation shaft 812, an operation shaft 814, a hook member 816, and a pin member 863 as the opening mechanism. The opening mechanism performs the opening operation when the sheet sensor 850 detects the transport abnormality of the cut sheet P2. Here, in the following description of FIG. 4, a state as viewed from the -X direction will be described unless otherwise specified.

[0101] The opening mechanism includes the movable unit 811, the rotation shaft 812, the operation shaft 814, the hook member 816, the pin member 863, a biasing member (not illustrated), a solenoid member 817, and the like. Here, in FIG. 4, the transport path along the transport direction of the continuous sheet P1 is indicated by a one-dot chain line, and a posture in which the movable unit 811 is displaced to an open state is indicated by a broken line. A posture of the upstream transport unit 81 and the movable unit 811 during the actuation of the sheet manufacturing apparatus 1 in which the sheet P3 is manufactured is referred to as a normal state.

[0102] The movable unit 811 is a substantially trapezoidal three-dimensional member when viewed from the -X direction. The upper side rollers 813a and 815a are disposed on a side corresponding to a lower bottom of the movable unit 811 in the -Z direction. In the lower bottom, the upper side roller 813a is positioned at an end portion in the +Y direction, and the upper side roller 815a is positioned at an end portion in the -Y direction. The upper side roller 815a is installed in the movable unit 811. The upper side roller 813a overlaps the movable unit 811, but is independent of the movable unit 811.

[0103] The rotation shaft 812 is installed near an end portion in the +Y direction at an upper bottom of the movable unit 811 in the +Z direction. The rotation shaft 812 rotatably supports the movable unit 811, using itself as a pivot point. Although not shown, the rotation shaft 812 is supported by a frame that supports the third unit group 103 via a support member or the like.

[0104] The biasing member is attached in a vicinity of the rotation shaft 812. The biasing member is, for example, a torsion spring and always biases the movable unit 811 to rotate clockwise.

[0105] The operation shaft 814, the hook member 816, the pin member 863, and the solenoid member 817 perform an operation that is a start of the opening operation of the movable unit 811. The operation shaft 814 and the hook member 816 are installed in the movable unit 811 in the substantially -Y direction of the rotation shaft 812. The pin member 863 is not installed in the movable unit 811 and is supported by the frame via a support member or the like at a position corresponding to a distal end of the hook member 816 in the -Z direction.

[0106] The operation shaft 814 rotatably supports the hook member 816. Specifically, the operation shaft 814 supports a substantially central section of the hook member 816 in the +Z direction. The solenoid member 817 is disposed at an end portion of the hook member 816 in the +Z direction. The solenoid member 817 displaces the end portion of the hook member 816 in the +Z direction in the Y-axis direction. The solenoid member 817 is operated under the control of the processor 5P.

[0107] The hook member 816 has a shape in which a distal end in the -Z direction is bent in a hook shape. In the normal state, the end portion of the hook member 816 in the +Z direction is displaced in the -Y direction by the solenoid member 817, and the distal end of the hook member 816 is hooked on the pin member 863. As a result, in the movable unit 811, the normal state is maintained against the biasing force of the biasing member.

[0108] In the displacement from the normal state to the open state, as the opening operation, the movable unit 811 rotates about the rotation shaft 812. Specifically, first, the solenoid member 817 is displaced in the +Y direction, the hook member 816 rotates clockwise, and the distal end of the hook member 816 is detached from the pin member 863. Next, the movable unit 811 rotates clockwise about the rotation shaft 812 by the biasing force of the biasing member. The rotation is stopped within a certain range by a stopper member (not illustrated), and the movable unit 811 is in a posture indicated by a broken line in FIG. 4. As a result, the upstream transport unit 81 is in the open state by the opening operation including the rotation of the movable unit 811.

[0109] The upstream transport unit 81 can be manually returned from the open state to the normal state. Specifically, an end portion of the movable unit 811 in the open state in the -Y direction is pushed down. As a result, the distal end of the hook member 816 is hooked on and locked by the pin member 863, and the normal state is achieved.

[0110] In the open state, the movable unit 811 is lifted in the substantially +Z direction in the -Y direction. Therefore, a space connecting to the transport path is generated in the +Z direction and the -Y direction of the region in which the upper side roller 815a is disposed in the normal state. The space is an evacuation space EZ. In FIG. 4, the evacuation space EZ is indicated by hatching. When the counter measure against transport failure described below is taken, the continuous sheet P1 is spilled into the evacuation space EZ. A width of the evacuation space EZ in the X-axis direction includes a width of the sheet Pl. In other words, when viewed from the +Z direction, the evacuation space EZ overlaps the transport path of the sheet Pl.

[0111] As shown in FIGS. 3 to 5, the sheet manufacturing apparatus 1 includes a spilled paper winder 841. The spilled paper winder 841 is a jig for removing the continuous sheet P1 accommodated in the evacuation space EZ when the counter measure against transport failure is taken through manual operation performed by the user. The spilled paper winder 841 is held in the storage section 840 installed above the first cutting section 832. Hereinafter, the spilled paper winder 841 will be described using the coordinate axes when the spilled paper winder 841 is held in the storage section 840.

[0112] The spilled paper winder 841 includes a handle 8412, a stopper 8414, a grip 8413, and a winding section 8411.

[0113] The grip 8413 is a cylindrical member along the X- axis direction. The winding section 8411 includes two rods of a first shaft section 8411A and a second shaft section 8411B that extend along the X-axis direction. The first shaft section 8411A penetrates the inside of the grip 8413 and is rotatable with respect to the grip 8413. The handle 8412 is fixed to an end portion of the first shaft section 8411A on the -X side that protrudes from an end portion of the grip 8413 on the -X side. The handle 8412 rotates about the X axis with respect to the grip 8413, and the first shaft section 8411A also rotates with the rotation.

[0114] A groove 8415 having a recessed shape is formed at the grip 8413 along the circumferential direction. The groove 8415 functions as a slip stopper when the user holds the spilled paper winder 841 and also functions as positioning when the spilled paper winder 841 is held in the storage section 840.

[0115] The stopper 8414 is fixed to a substantially central section of the first shaft section 8411A in the X- axis direction. The stopper 8414 is interposed between the handle 8412 and the grip 8413 to prevent the grip 8413 from falling off from the first shaft section 8411A. The -X side end portion of the second shaft section 8411B is fixed to the stopper 8414. As a result, the +X side of the stopper 8414 has two of the first shaft section 8411A and the second shaft section 8411B, and the -X axis side has one stopper 8414, so that the appearance is bifurcated.

[0116] The first shaft section 8411A and the second shaft section 8411B are substantially parallel to each other. The first shaft section 8411A and the second shaft section 8411B extend from the stopper 8414 in the +X direction. A length from the end portion of the first shaft section 8411A and the second shaft section 8411B in the +X direction to the stopper 8414 is longer than a width of the sheet P1 in the X-axis direction.

[0117] When the user grips the grip 8413 with one hand and rotates the handle 8412 with the other hand, the winding section 8411 rotates about the first shaft section 8411A together with the stopper 8414. That is, the second shaft section 8411B revolves around the first shaft section 8411A.

[0118] The user winds the sheet P1 that has spilled into the evacuation space EZ with the winding section 8411. Specifically, the user inserts a part of the sheet P1 that has spilled into the evacuation space EZ between the first shaft section 8411A and the second shaft section 8411B. Then, by operating the handle 8412 to rotate the winding section 8411, the sheet P1 can be wound by the winding section 8411. The upstream of the sheet P1 is wound from a section that is cut by the first cutting section 832 when the sheet P1 is transported well. The downstream of the sheet P1 is wound from a section where the sheet P1 is completed. Therefore, the user can remove the sheet P1 that has spilled by pulling out the spilled paper winder 841 after winding the entire sheet P1 that has spilled.

[0119] The shape of the winding section 8411 is not particularly limited as long as the sheet P1 that has spilled can be wound. The winding section 8411 is not limited to one having the first shaft section 8411A and the second shaft section 8411B that are substantially parallel to each other. For example, the winding section 8411 may be composed of two rod members composed of a plurality of curves or may have a bent section. In addition, a cross- sectional shape of the rod member is not limited to a circle, and may be a polygon such as a triangle or a pentagon, or may be a plate shape or a screw shape. Further, the two rod members are not limited to being parallel to each other. In addition, the winding section 8411 may be composed of three or more rod members.

[0120] As shown in FIGS. 6 and 7, the storage section 840 detachably holds the spilled paper winder 841. The storage section 840 is composed of a first holding section 8401A and a second holding section 8401B. The first holding section 8401A also serves as a cover member that covers a drive mechanism of the first cutting section 832.

[0121] The drive mechanism of the first cutting section 832 is bulky compared to the front and rear of the transport path, and space is required on the +Z side. Therefore, the cover member protrudes on the +Z side only in the portion of the drive mechanism of the first cutting section 832, and the front and rear of the transport path are lower than that, so that the evacuation space EZ is widened. Then, by having the first holding section 8401A also serve as the cover member, the evacuation space EZ can be widened as compared to a case where the cover member is a separate member.

[0122] The first holding section 8401A is located above the -X side of the first cutting section 832. A protrusion section 842 that detachably holds the spilled paper winder 841 is provided on an upper section of the first holding section 8401A.

[0123] The protrusion section 842 corresponds to a cross- sectional shape of the grip 8413 of the spilled paper winder 841. The protrusion section 842 is positioned in the X-axis direction while holding the spilled paper winder 841 by engaging with the groove 8415 formed in the grip 8413. FIG. 6 shows a state in which the first holding section 8401A holds the grip 8413 and the storage section 840 stores the spilled paper winder 841. In a state in which the spilled paper winder 841 is held in the storage section 840, the handle 8412 is located on the -X side of the evacuation space EZ, that is, on the outside of the evacuation space. By being located on the outside of the evacuation space EZ, the handle 8412 is prevent from being hidden by the sheet P1 accommodated in the evacuation space EZ.

[0124] The second holding section 8401B is disposed on an upper section of the first cutting section 832 on the +X side and holds an end portion of the winding section 8411 on the +X side. The second holding section 8401B has a recessed portion 8416 on an upper section thereof, and a width of the recessed portion 8416 corresponds to a width of the winding section 8411 in the Y-axis direction.

[0125] The display section 12 performs display under the control of the processor 5P. The display section 12 can execute a plurality of different displays and can receive a command from the user. FIG. 8 is an example of an image displayed on the display section 12. In an error display region 701, the occurred malfunction is displayed as an error content.

[0126] In a guide region 702, for example, a removal procedure of the sheet P1 that is a spilled paper and is accommodated in the evacuation space EZ is displayed to the user. In an operation region 703, a "next" button and a "return" button for displaying the removal procedure of the sheet P1 displayed in the guide region 702 in a frame-by- frame manner are displayed, and a command from the user is received. In addition, a "complete" button operated by the user is also provided when the removal procedure of the sheet P1 is completed.

[0127] As described above, the display section 12 is a touch panel type liquid crystal display, can perform various types of display under the control of the processor 5P, and can receive an input operation by the user. As shown in FIG. 8, the display screen of the display section 12 includes the error display region 701 in which a content is displayed when a malfunction such as a transport failure occurs, and the guide region 702 in which a procedure for taking a countermeasure against the malfunction is guided. For example, when the transport failure occurs, the error display region 701 displays the fact, and the guide region 702 displays a procedure for removing the sheet P1 that has spilled into the evacuation space EZ. In addition, the display screen includes the operation region 703 that receives an operation of the user, and the operation region 703 includes a "next" button, a "return" button, and a "complete" button. The "next" button is operated to advance the procedure for taking a countermeasure by one step, and the "return" button is operated to return the procedure for addressing by one step. In addition, the "complete" button is a button that is operated when the countermeasure is completed.

[0128] As shown in FIG. 9, the opening operation that is the countermeasure against the transport failure includes steps S10 to 520. In the following description of the opening operation of the upstream transport unit 81 and the display content on the display section 12, FIGS. 1 to 5 will also be referred to.

[0129] In step 510, the sheet sensor 850 performs a detection operation of the cut sheet P2. Step S10 is always performed in a normal actuation state in which the sheet manufacturing apparatus 1 manufactures the sheet P3. The detection result of the sheet sensor 850 is transmitted to the processor 5P. Then, the process proceeds to step S11.

[0130] In step S11, the processor 5P determines whether or not there is the transport abnormality of the sheet with respect to the detection result of the sheet sensor 850. Specifically, the processor 5P compares the reflectivity when the cut sheet P2 is not present or the reflectivity when the cut sheet P2 is present, which is stored in the storage section (not illustrated), with the detection result to estimate the presence or absence of the cut sheet P2 in the transport path. The processor 5P determines that the transport failure has occurred when the cut sheet P2 is not present at the time when the cut sheet P2 is originally present, and determines that the transport failure has not occurred when the cut sheet P2 is present. In addition, the processor 5P determines that the transport failure has occurred when the cut sheet P2 is present at the time when the cut sheet P2 is originally not present, and determines that the transport failure has not occurred when the cut sheet P2 is not present. When the processor 5P determines that the transport failure has occurred (step S11: YES), the process proceeds to step S12, and when the processor 5P determines that the transport failure has not occurred (step S11: NO), the process returns to step S10.

[0131] In step S12, the processor 5P issues an instruction to start the actuation stop operation to each configuration of the sheet manufacturing apparatus 1. At this time, each of the above configurations stops the actuation not all at once but sequentially. Specifically, the supply of the mixture, which is a material, is stopped in the accumulation section 50 upstream of the sheet forming unit 70. On the other hand, the formation of the continuous sheet P1 is continued in the sheet forming unit 70 by the mixture and the web W remaining in the sheet forming unit 70 from the accumulation section 50.

[0132] In addition, in the transport unit 80, the operation of transporting the continuous sheet P1 and the cut sheet P2 of the second transport roller group 820 is stopped under the control of the processor 5P, and the operation of transporting the sheet P3 is continued. Since there is no abnormality in the sheet P3, the sheet P3 is discharged to the tray 191 as a normal finished product. As a result, since the material or the web W that remains is consumed between the accumulation section 50 and the sheet forming unit 70, the residual material, which is a work-in- progress, is reduced, and the labor required for the reactuating the operation can be saved. Then, the process proceeds to step S13.

[0133] In step 513, the processor 5P issues an instruction to perform the opening operation of the upstream transport unit 81. Specifically, in response to the instruction of the control section 5, the solenoid member 817 of the opening mechanism rotates the operation shaft S14

[0134] In step S14, the processor 5P issues an instruction to stop the operation of the downstream transport unit 82. As a result, the second transport roller group 820, the first cutting section 832, the second cutting section 834, and the like stop the actuation. Step S14 may be performed at the same time as step S13.

[0135] During this time, the continuous sheet P1 is continuously molded in the sheet forming unit 70. In the open state, the continuous sheet P1 molded by the sheet forming unit 70 deviates from the transport path and moves to the evacuation space EZ.

[0136] Specifically, as illustrated in FIG. 10, since the sheet forming unit 70 continues to form the continuous sheet P1, the continuous sheet P1 is transported downstream from the sheet forming unit 70. In the first transport roller group 810, the transport roller pair 813 continues to transport the continuous sheet P1 downstream. On the other hand, the second transport roller group 820 including the transport roller pair 821 stops the transport in step S14.

[0137] Therefore, as the spilled paper, the continuous sheet P1 is raised to the evacuation space EZ above the lower side roller 815b without advancing beyond the transport roller pair 821. That is, when the transport failure is detected in the sheet P1, the sheet P1 is spilled from between the manufacturing mechanism and the first cutting section 832 to the evacuation space EZ. By moving the continuous sheet P1 to the evacuation space EZ, the material or the web W remaining in the sheet forming unit 70 or the like is consumed. In addition, since the transport of the continuous sheet P1 or the cut sheet P2 to the occurrence location of the transport failure is stopped, it is possible to prevent the deterioration of the situation of the transport failure. Then, the process proceeds to step S15.

[0138] Returning to FIG. 9, in step 515, the processor 5P issues an instruction to stop the forming operation of the sheet forming unit 70. In this case, the processor 5P stops the forming of the continuous sheet P1 in the sheet forming unit 70 after the operation of the second transport roller group 820 is stopped in step S14 and a predetermined time has elapsed. The predetermined time is a time when the work- in-progress and a material to be charged are formed into the continuous sheet P1 and consumed upstream of the upstream transport unit 81 including the sheet forming unit 70. The predetermined time is appropriately set according to the scale and the configuration of the sheet manufacturing apparatus 1. As described above, the actuation of the sheet manufacturing apparatus 1 is stopped. Then, the process proceeds to step S16.

[0139] In step S16, the processor 5P controls the key 14 that locks the door 84 to unlock the door 84. Then, the process proceeds to step S17.

[0140] In step S17, the processor 5P, via the display section 12, provides a notification for collecting the sheet P1 that has spilled into the evacuation space EZ using the spilled paper winder 841. This can be interpreted as the processor 5P by causing the user to collect the sheet P1 that has spilled into the evacuation space EZ, or the processor 5P collecting the sheet P1 that has spilled into the evacuation space EZ by using the user. The notification is displayed in the guide region 702 of the display section 12 by dividing the removal procedure of the sheet P1 into a plurality of images. In the present embodiment, a procedure of six images from FIG. 11 to FIG. 16 is sequentially displayed as the removal procedure. First, the processor 5P displays an image of FIG. 11 in the guide region 702 of the display section 12.

[0141] FIG. 11 is an image for instructing the user to open the door 84 provided in the sheet manufacturing apparatus 1. When the user opens the door 84 in response to the image of FIG. 11 and then presses the "next" button, the processor 5P recognizes a fact that the "next" button has been pressed, and switches the image of the guide region 702 of the display section 12 to the image of FIG. 12.

[0142] FIG. 12 is an image for allowing the user to recognize the appearance of the spilled paper winder 841 and for showing a storage position to the user. When the user removes the spilled paper winder 841 from the storage section 840 and then presses the "next" button, the processor 5P recognizes a fact that the "next" button has been pressed, and switches the image of the guide region 702 of the display section 12 to the image of FIG. 13.

[0143] FIG. 13 is an image showing a method of pinching the sheet P1 that has spilled into the evacuation space EZ by the winding section 8411. When the user operates the spilled paper winder 841 in response to the image of FIG. 13, the pinching of the sheet P1 by the winding section 8411 is completed. When the user presses the "next" button, the processor 5P recognizes a fact that the "next" button has been pressed, and switches the image of the guide region 702 of the display section 12 to the image of FIG. 14.

[0144] FIG. 14 is an image showing a method of winding the sheet P1 by the spilled paper winder 841. When the user operates the spilled paper winder 841 in response to the image of FIG. 14, the sheet P1 is wound. Then, the winding is completed and when the "next" button is pressed, the processor 5P switches the image of the guide region 702 of the display section 12 to the image of FIG. 15.

[0145] FIG. 15 shows an image of removing the sheet P1 from the sheet manufacturing apparatus 1 after winding the sheet P1 by the spilled paper winder 841. When the user operates the spilled paper winder 841 in response to the image of FIG. 15, the sheet P1 is removed from the sheet manufacturing apparatus 1. When the user presses the "next" button after the removal is completed, the processor 5P switches the image of the guide region 702 of the display section 12 to the image of FIG. 16.

[0146] FIG. 16 is an image for instructing the user to close the door 84 after removing the sheet P1 from the sheet manufacturing apparatus 1. Then, the process proceeds to step S18.

[0147] In step S18, the processor 5P determines whether or not the user closes the door 84 in response to the image of FIG. 16 and operates the "complete" button. When the "complete" button is operated by the user (step S18: YES), the processor 5P proceeds to step S19, and when the "complete" button is not operated by the user (step S18: NO), step S18 is repeated.

[0148] In step S19, the processor 5P controls the key 14 to lock the door 84. Then, the process proceeds to step S20.

[0149] In step S20, the processor 5P performs a home position return operation of the sheet manufacturing apparatus 1. When the home position return operation of the sheet manufacturing apparatus 1 is completed, the sheet manufacturing apparatus 1 is brought into a state in which the sheet can be manufactured, and the manufacturing of the sheet is resumed. When an abnormality is found during the home position return operation, the home position return operation is immediately stopped to prompt the user to respond. When the user operates the "complete" button without removing the sheet P1, the home position return operation is immediately stopped to prompt the user to respond.

[0150] In the above-described embodiment, the aspect in which the notification is provided to the user via the display section has been described, but the present embodiment is not limited to this aspect. For example, when the sheet manufacturing apparatus includes a speaker, the notification may be provided via a voice. In addition, when the sheet manufacturing apparatus includes a communication interface that can be connected to a communication line such as the Internet, the notification may be provided via electronic mail or the like.

[0151] According to the present embodiment, the following effects can be obtained.

[0152] According to this configuration, when the transport failure of the sheet P1 is detected in the transport mechanism, the transport mechanism causes the sheet P1 in the middle of the transport to spill into the evacuation space EZ, so that the user can easily remove the sheet P1 that cannot be transported. In addition, when the door 84 for accessing the evacuation space EZ is opened, the spilled paper winder 841 for removing the sheet P1 that has spilled can also be accessed, so that the work efficiency when the sheet P1 is removed is improved. In other words, the worker does not need to search for the spilled paper winder 841 after opening the door 84.

[0153] According to this configuration, since the spilled paper winder 841 includes the handle 8412 and the winding section 8411 that rotates with respect to the handle 8412 to wind the sheet P1, the user can easily wind and remove the sheet P1 by using the spilled paper winder 841.

[0154] According to this configuration, since the spilled paper winder 841 includes at least a bifurcated winding section 8411, the user can more easily remove the sheet P1 by pinching the sheet P1 that has spilled with the spilled paper winder 841.

[0155] According to this configuration, since the sheet manufacturing apparatus 1 includes the storage section 840 that detachably holds a part of the spilled paper winder 841, it is easy for the user to easily access the spilled paper winder 841.

[0156] According to this configuration, since the sheet manufacturing apparatus 1 includes the storage section 840 that detachably holds a part of the spilled paper winder 841 and that engages with the groove 8415 of the spilled paper winder 841, it is easy for the user to hold the spilled paper winder 841 at a predetermined position after using the spilled paper winder 841.

[0157] According to this configuration, when the transport failure of the sheet P1 is detected in the transport mechanism, the sheet manufacturing apparatus 1 can provide, via the display section 12, a notification for collecting the sheet P1 to the user using the spilled paper winder 841.

[0158] According to this configuration, since the door 84 can be opened after the transport mechanism is stopped, the door 84 is not opened during the operation of the transport mechanism. As a result, it is possible to improve the safety of the sheet manufacturing apparatus 1.

Claims

1. A sheet manufacturing apparatus comprising:a manufacturing mechanism that manufactures a sheet;a transport mechanism that transports the manufactured sheet;a cutter that cuts the transported sheet;a door; anda spilled paper winder, wherein the transport mechanism causes the sheet to spill from between the manufacturing mechanism and the cutter into an evacuation space in response to a detection of a transport failure of the manufactured sheet, andthe door is switchable between an open state in which a user is able to access the evacuation space and the spilled paper winder and a closed state in which the user is notable to access the evacuation space and the spilled paper winder.

2. The sheet manufacturing apparatus according to claim 1, wherein the spilled paper winder includes a grip and a winding section that rotates with respect to the grip to wind the sheet.

3. The sheet manufacturing apparatus according to claim 2, wherein the winding section includes at least a bifurcated winding section.

4. The sheet manufacturing apparatus according to claim 2, further comprising:a storage section that detachably holds a part of the spilled paper winder, wherein in a state in which the spilled paper winder is held by the storage section, at least a part of the grip is located on outside of the evacuation space, and a part of the spilled paper winder is exposed to the evacuation space.

5. The sheet manufacturing apparatus according to claim 1, further comprising:a holding section that holds the spilled paper winder by engaging with a groove of the spilled paper winder.

6. The sheet manufacturing apparatus according to claim 1, further comprising:a processor that causes the sheet to spill from between the manufacturing mechanism and the cutter into theevacuation space in response to a detection of a transport failure of the manufactured sheet, stops the transport by the transport mechanism, and causes the user to collect the sheet using the spilled paper winder.

7. The sheet manufacturing apparatus according to claim 1, further comprising:a key that locks the door such that the door is not opened, wherein the key unlocks the door after the sheet is spilled into the evacuation space, and the transport mechanism is stopped.

Images