Sheet manufacturing apparatus and cleaning apparatus

Abstract

The invention provides a sheet manufacturing apparatus and a cleaning apparatus which can continuously maintain the cleaning capability of a cleaning roller. A sheet manufacturing device (1) is characterized by comprising: a processing roller (72) for processing a fiber-containing web (W); a cleaning part (42) including a cleaning roller part (230), a scraper part (241), and a hammer part (244); and a control unit (5), in which the cleaning roller unit (230) cleans the processing roller (72), the blade unit (241) cleans the cleaning roller unit (230), and the control unit (5) operates the hammer unit (244) so as to impart an impact to the blade unit (241).

Description

Technical Field

[0001] The present invention relates to a sheet manufacturing device and a cleaning device. Background Art

[0002] Conventionally, there is a known apparatus for manufacturing a sheet or the like by compression molding a sheet containing fibers derived from paper. For example, Patent Document 1 discloses a cleaning mechanism for removing paper dust attached to a calender roller for molding. The mechanism is a mechanism for cleaning the calender roller by bringing a cleaning felt roller into contact with the calender roller in a fiber structure manufacturing apparatus.

[0003] However, in the device described in Patent Document 1, there is a problem that it is difficult to maintain the cleaning ability of the calender roller. Specifically, the felt roller is brought into contact with the calender roller, and further, the removal component is brought into contact with the felt roller. The paper dust attached to the calender roller is transferred from the calender roller to the felt roller, and then from the felt roller to the removal component. Therefore, if the paper dust transferred to the removal component accumulates, the cleaning ability of the removal component is reduced, and further, the cleaning ability of the felt roller is reduced. That is, a sheet manufacturing device is required that can continuously maintain the cleaning ability of the cleaning roller.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2022-156155 Summary of the invention

[0005] The thin sheet manufacturing device is characterized in that it has: a processing roller, which processes a fiber-containing material sheet; a cleaning section, which includes a cleaning roller section, a scraper section, and a hammer section; a control section, wherein the cleaning roller section cleans the processing roller, the scraper section cleans the cleaning roller section, and the control section causes the hammer section to operate to apply impact to the scraper section.

[0006] The cleaning device is characterized in that it has: a cleaning section, which includes a cleaning roller section, a scraper section, and a hammer section, and cleans the forming component with attached paper powder; a control section, wherein the cleaning roller section cleans the forming component, the scraper section cleans the cleaning roller section, and the control section causes the hammer section to operate to apply impact to the scraper section. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram showing the structure of a sheet manufacturing apparatus according to an embodiment.

[0008] Figure 2 It is a perspective view showing the arrangement of the shaping section and the cleaning section.

[0009] Figure 3 It is a perspective view showing the structure of the cleaning part of the first cleaning device.

[0010] Figure 4 It is a side view showing the arrangement of the cleaning part of the first cleaning device.

[0011] Figure 5 It is a perspective view showing the structure of the cleaning part of the second cleaning device.

[0012] Figure 6 It is a side view showing the arrangement of the cleaning part of the second cleaning device.

[0013] Figure 7 This is an enlarged side view showing the structure and arrangement of the hammer body, etc.

[0014] Figure 8 It is a perspective view showing the structure and arrangement of the hammer body and the like.

[0015] Fig. 9 It is a perspective view showing the appearance of the rod portion and the striking portion of the hammer body.

[0016] Fig.10 It is a side view showing the arrangement of the gear group and the hammer part of the second cleaning device.

[0017] Fig.11 It is a perspective view showing the arrangement of the rolling portion, the rod portion, etc. in the second cleaning device.

[0018] Fig.12 It is a perspective view showing the operating principle of the striking action in the second cleaning device.

[0019] Fig.13 It is a perspective view showing the operating principle of the striking action in the second cleaning device.

[0020] Fig.14 It is a side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0021] Fig.15 It is a side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0022] Fig.16 It is a side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0023] Fig.17 It is a side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0024] Fig.18 It is a side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0025] Fig.19It is a side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0026] Fig. 20 It is a side view showing the posture of the cleaning part in the second cleaning device when it is isolated.

[0027] Fig.21 A side view showing the posture of the cleaning part of the first cleaning device when it is isolated DETAILED DESCRIPTION

[0028] In the following embodiments, a sheet manufacturing device 1 for regenerating paper sheets such as waste paper in a dry manner is exemplified and described with reference to the accompanying drawings. The sheet manufacturing device of the present invention is not limited to a dry method, but may also be a wet method. In addition, in this specification, a dry method refers to a process that is not performed in a liquid but is performed in air such as the atmosphere.

[0029] In the following drawings, the XYZ axes are marked as mutually orthogonal coordinate axes, and the direction indicated by each arrow mark is set as the + direction, and the direction opposite to the + direction is set as the - direction. The Z axis is an imaginary axis along the vertical direction, and the +Z direction is set as the upper direction, and the -Z direction is set as the lower direction. The -Z direction is the direction in which gravity acts. In addition, in the sheet manufacturing device 1, the target side of the conveying direction of the raw material, the sheet, and the sheet is sometimes referred to as the downstream, and the side of the retracing conveying direction is referred to as the upstream. For the convenience of illustration, the size of each component is different from the actual situation.

[0030] like Figure 1 As shown in FIG. 1 , 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 shown). Figure 1 In the figure, the directions in which the waste paper C, the thin sheet P3, the thin strips S, and the useless end materials etc. move are shown by white hollow arrow marks.

[0031] The sheet manufacturing apparatus 1 manufactures a sheet P3 from waste paper C. In the sheet manufacturing apparatus 1 , the first unit group 101 , the third unit group 103 , and the second unit group 102 are arranged from the −Y direction toward the +Y direction when viewed from the side from the −X direction.

[0032] The waste paper C is transported from the first unit group 101 to the second unit group 102 via the pipe 21 that crosses the third unit group 103. The waste paper C is defibrated in the second unit group 102 to become fibers, and then formed into a mixture containing a binder and the like. The mixture is transported to the third unit group 103 via the pipe 24. The mixture is formed into a web W in the third unit group 103, and then formed into a strip-shaped sheet P1. The strip-shaped sheet P1 is cut in the first unit group 101 to become a sheet P3.

[0033] The first unit group 101 has a buffer tank 13, a quantitative supply unit 15, a confluence unit 17, and a pipe 21. In the first unit group 101, these structures are arranged in the above order from the upstream to the downstream. In addition, the first unit group 101 also has a first cutting unit 81, a second cutting unit 82, a tray 91, and a shredding unit 95. The first cutting unit 81 and the second cutting unit 82 cut the strip-shaped sheet P1 into a sheet P3 of a predetermined shape. In addition, the first unit group 101 has a water supply unit 67. The water supply unit 67 is a water storage tank. The water supply unit 67 supplies water for humidification to the first humidification unit 65 and the second humidification unit 66 described later, respectively, using a water supply pipe not shown in the figure.

[0034] Waste paper C is fed into the buffer tank 13 from the material inlet 11. The waste paper C contains fibers such as cellulose and is, for example, shredded waste paper. Humidified air is supplied to the buffer tank 13 from the second humidifying unit 66 included in the third unit group 103.

[0035] The defibrated waste paper C is temporarily stored in the buffer tank 13 and then conveyed to the fixed quantity supply unit 15 according to the operation of the sheet manufacturing apparatus 1. The sheet manufacturing apparatus 1 may include a pulverizer for shredding the waste paper C and the like on the upstream side of the buffer tank 13.

[0036] The fixed quantity supply unit 15 includes a meter 15a and a supply mechanism (not shown). The meter 15a measures the mass of the waste paper C. The supply mechanism supplies the waste paper C measured in the meter 15a to the downstream confluence unit 17. That is, the fixed quantity supply unit 15 measures the waste paper C at each predetermined mass in the meter 15a, and supplies the waste paper C to the downstream confluence unit 17 by the supply mechanism.

[0037] Any digital or analog measuring mechanism can be used in the measuring device 15a. Specifically, physical sensors such as load cells, spring balances, and balances can be cited as the measuring device 15a. In this embodiment, a load cell is used as the measuring device 15a. The predetermined mass of the waste paper C measured by the measuring device 15a is, for example, several grams to several tens of grams.

[0038] As the supply mechanism, a known technique such as a vibration feeder can be applied. The supply mechanism may be a structure included in the weighing device 15a.

[0039] The measurement and supply of waste paper C in the quantitative supply unit 15 is a batch process. That is, the supply of waste paper C from the quantitative supply unit 15 to the confluence unit 17 is intermittently performed. The quantitative supply unit 15 may include a plurality of weighing devices 15a, and the plurality of weighing devices 15a may be operated at different times to improve the efficiency of measurement.

[0040] In the confluence section 17, the shredded pieces of the sliver pieces S supplied from the shredder section 95 are merged with and mixed with the waste paper C supplied from the fixed quantity supply section 15. The sliver pieces S and the shredder section 95 will be described later. The waste paper C mixed with the shredded pieces flows from the confluence section 17 into the pipe 21.

[0041] The pipe 21 conveys the waste paper C from the first unit group 101 to the second unit group 102 by an airflow generated by a blower (not shown).

[0042] The second unit group 102 has a defibration unit 31 as a dry defibrator, a separation unit 32, a pipe 23, a mixing unit 33, and a pipe 24. In the second unit group 102, these structures are arranged in the above order from upstream to downstream. In addition, the second unit group 102 also has a pipe 25 connected to the separation unit 32, a recovery unit 35, a compressor 38, and a power supply unit 39.

[0043] The waste paper C conveyed by the pipe 21 flows into the defibrating unit 31. The defibrating unit 31 defibrates the waste paper C supplied from the fixed-rate supply unit 15 in a dry manner to form fibers. In the defibrating unit 31, a known defibrating mechanism can be applied.

[0044] As the defibration section 31, for example, the following structure can be cited. The defibration section 31 includes a stator and an impeller. The stator has a substantially cylindrical inner surface. The impeller is disposed inside the stator and rotates along the inner surface of the stator. Fragments of waste paper C are clamped between the inner surface of the stator and the impeller, and are defibrated by the shear stress generated therebetween. As a result, in the waste paper C, entangled fibers contained in the paper pieces are disassembled. The waste paper C is formed into fibers and transported to the separation section 32.

[0045] The separation unit 32 separates the defibrated fibers. Specifically, the separation unit 32 removes the components contained in the fibers that are useless in the manufacture of the sheet P3. Specifically, the separation unit 32 separates the longer fibers from the shorter fibers. Since the shorter fibers may cause the strength of the sheet P3 to decrease, they are separated in the separation unit 32. In addition, the separation unit 32 also separates and removes the color materials and additives contained in the waste paper C. In the separation unit 32, known techniques such as the disc mesh method can be applied.

[0046] The interior of the separation unit 32 is supplied with humidified air from the second humidifying unit 66 of the third unit group 103 .

[0047] Short fibers and the like are removed from the defibrated fibers and are conveyed to the mixing unit 33 via the pipe 23. The short fibers and unnecessary components such as color materials are discharged to the recovery unit 35 via the pipe 25.

[0048] The mixing unit 33 mixes the binder material and the like with the fibers in the air to form a mixture. Although not shown in the figure, the mixing unit 33 includes a flow channel for conveying the fibers, a fan, a hopper, a supply pipe, and a valve.

[0049] The hopper is connected to the fiber flow channel via a supply pipe. A valve is provided in the supply pipe between the hopper and the flow channel. The hopper supplies adhesive materials such as starch into the flow channel. The valve adjusts the mass of the adhesive material supplied from the hopper to the flow channel. Thus, the mixing ratio of the fiber and the adhesive material is adjusted.

[0050] The mixing unit 33 may include a similar structure for supplying a coloring material, an additive, etc., in addition to the above-mentioned structure for supplying the binder.

[0051] The fan of the mixing section 33 generates an airflow to transport the fibers downstream and mix the binder and the like into the air to form a mixture. The mixture flows from the mixing section 33 into the pipe 24 .

[0052] The recovery unit 35 includes a filter (not shown). The filter removes unnecessary components such as short fibers conveyed from the pipe 25 by the airflow.

[0053] The compressor 38 generates compressed air. The filter may be clogged by fine particles of unnecessary components. The compressed air generated by the compressor 38 is blown onto the filter to blow away the attached particles and clean the filter.

[0054] The power supply unit 39 includes a control unit 5 and a power supply device (not shown) for supplying power to the sheet manufacturing apparatus 1. The power supply unit 39 distributes the power supplied from the outside to each component of the sheet manufacturing apparatus 1. The control unit 5 is electrically connected to each component of the sheet manufacturing apparatus 1, and controls the operations of these components in an integrated manner.

[0055] The third unit group 103 deposits and compresses the fiber-containing mixture to form a strip-shaped sheet P1 as recycled paper. The third unit group 103 includes a depositing unit 50, a first conveying unit 61, a second conveying unit 62, a first humidifying unit 65, a second humidifying unit 66, a draining unit 68, a forming unit 70, and cleaning units 41 and 42.

[0056] In the third unit group 103 , the stacking unit 50 , the first conveying unit 61 , the second conveying unit 62 , the first humidifying unit 65 , the shaping unit 70 , and the cleaning units 41 , 42 are arranged in the order described above from upstream to downstream.

[0057] The accumulation unit 50 accumulates the mixture containing the separated fibers in the air to generate a web W. The accumulation unit 50 includes a roller member 53, a blade member 55 provided in the roller member 53, a housing 51 for housing the roller member 53, and a suction unit 59. The mixture is introduced into the roller member 53 from the pipe 24.

[0058] The first conveyor 61 is disposed below the stacking unit 50. The first conveyor 61 includes a mesh belt 61a and five extension rollers (not shown) for extending the mesh belt 61a. The suction unit 59 faces the roller member 53 via the mesh belt 61a in the direction along the Z axis.

[0059] The blade member 55 is located inside the drum member 53 and is driven to rotate by a motor (not shown). The drum member 53 is a semi-cylindrical sieve. A net having the function of a sieve is provided on the side of the drum member 53 facing downward. The drum member 53 allows particles such as fibers and mixtures that are smaller than the size of the opening of the sieve net to pass from the inside to the outside.

[0060] The mixture is stirred by the blade member 55 rotating in the drum member 53 and released to the outside of the drum member 53. The inside of the drum member 53 is supplied with humidified air from the second humidifying unit 66.

[0061] The suction unit 59 is disposed below the roller member 53. The suction unit 59 sucks the air in the housing 51 through the multiple holes of the mesh belt 61a. The multiple holes of the mesh belt 61a allow air to pass through, but it is difficult for fibers and adhesive materials contained in the mixture to pass through. As a result, the mixture released to the outside of the roller member 53 is sucked downward together with the air. The suction unit 59 is a well-known suction device such as a blower.

[0062] The mixture is dispersed in the air in the housing 51 , and is deposited on the upper surface of the mesh belt 61 a to form a web W by gravity and suction by the suction unit 59 .

[0063] The mesh belt 61a is an endless belt and is stretched by five stretching rollers. The mesh belt 61a is stretched by the self-rotation of the stretching rollers. Figure 1 The first conveying unit 61 conveys the formed web W to the downstream through the rotation of the web belt 61a.

[0064] The second conveying unit 62 conveys the web W instead of the first conveying unit 61 at the downstream of the first conveying unit 61. The second conveying unit 62 peels the web W from the surface above the mesh belt 61a and conveys the web W toward the forming unit 70. The second conveying unit 62 is located above the conveying path of the web W and is arranged slightly upstream of the starting point of the return side of the mesh belt 61a. The +Y direction of the second conveying unit 62 and the -Y direction of the mesh belt 61a partially overlap in the vertical direction.

[0065] The second conveying unit 62 includes a conveyor belt (not shown), a plurality of rollers, and a suction mechanism. The conveyor belt is provided with a plurality of holes for allowing air to pass through. The conveyor belt is stretched over a plurality of rollers and rotated by the rotation of the rollers.

[0066] The second conveying unit 62 uses the negative pressure generated by the suction mechanism to suck the upper surface of the web W onto the lower surface of the conveyor belt. By rotating the conveyor belt in this state, the web W is sucked onto the conveyor belt and conveyed downstream.

[0067] The first humidifying section 65 humidifies the fiber-containing web W accumulated in the accumulation section 50 of the third unit group 103. Specifically, the first humidifying section 65 is, for example, a mist-type humidifier, which supplies mist M from below to the web W conveyed by the second conveying section 62 for humidification. The first humidifying section 65 is arranged below the second conveying section 62 and is opposite to the web W conveyed by the second conveying section 62 in the direction along the Z axis. In the first humidifying section 65, for example, a known humidifying device such as an ultrasonic type can be applied.

[0068] By using the mist M to humidify the web W, the function of starch as a bonding material can be promoted, thereby improving the strength of the sheet P3. In addition, since the humidification is performed from below relative to the web W, water droplets from the mist are prevented from falling onto the web W. Furthermore, since the humidification is performed from the opposite side of the contact surface between the conveyor belt and the web W, the adhesion of the web W to the conveyor belt is reduced. The second conveyor 62 conveys the web W to the forming section 70.

[0069] The forming section 70 includes processing rollers 71 and 72. The processing rollers 71 and 72UI process the fiber-containing web W to form a strip-shaped sheet P1. The processing rollers 71 and 72 form a pair and each of them has an electric heater built therein to increase the temperature of the roller surface.

[0070] The processing rollers 71 and 72 are each a substantially cylindrical member. The rotation axis of the processing roller 71 and the rotation axis of the processing roller 72 are arranged along the X axis. With respect to the conveying path of the web W, the processing roller 71 is arranged substantially above, and the processing roller 72 is arranged substantially below. Between the side surfaces of the processing roller 71 and the side surfaces of the processing roller 72, a gap corresponding to the thickness of the sheet P3 to be manufactured is provided.

[0071] The processing rollers 71 and 72 are driven to rotate by a stepping motor (not shown). The web W is fed downstream while being sandwiched between the processing rollers 71 and 72 and heated and pressurized. That is, the web W continuously passes through the forming section 70 and is press-formed while 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.

[0072] The web W passes through the shaping unit 70 , whereby the air contained therein is reduced from an air-rich and soft state, and the fibers are bonded together by the bonding material, thereby being shaped into a strip-shaped sheet P1 . The strip-shaped sheet P1 is conveyed to the first unit group 101 by conveying rollers (not shown).

[0073] The cleaning section 41 corresponds to the process roller 71, and the cleaning section 42 corresponds to the process roller 72. The cleaning section 41 and the control section 5 constitute a cleaning device 401 described later. The cleaning section 42 and the control section 5 constitute a cleaning device 402 described later.

[0074] As described above, the processing rollers 71 and 72 sandwich the web W to apply pressure. Therefore, paper dust and fibers from the waste paper C contained in the web W are easily attached to the side surfaces of the processing rollers 71 and 72. If the forming is continued with the paper dust attached, the surface of the manufactured sheet P3 may be dirty or rough, or the strength of the sheet may be reduced. The cleaning unit 41 cleans the processing roller 71, and the cleaning unit 42 cleans the processing roller 72.

[0075] The second humidifying unit 66 is disposed below the first humidifying unit 65. A known vaporization humidifying device can be applied to the second humidifying unit 66. Examples of the vaporization humidifying device include a device that allows air to pass through a wet nonwoven fabric or the like to vaporize moisture to generate humidified air.

[0076] The second humidifying unit 66 humidifies a predetermined area of ​​the sheet manufacturing apparatus 1. The predetermined area refers to one or more of the buffer tank 13, the separation unit 32, and the inside of the drum member 53 of the stacking unit 50. Specifically, humidified air is supplied to the above-mentioned area from the second humidifying unit 66 via a plurality of tubes not shown. The humidified air suppresses the charging of waste paper C and fibers in the above-mentioned structures, thereby suppressing the adhesion to the components caused by these static electricity.

[0077] The drain unit 68 is a drain tank. The drain unit 68 collects and stores water that has been used and aged in the first humidifying unit 65 and the second humidifying unit 66. The drain unit 68 can be removed from the sheet manufacturing apparatus 1 as needed to discard the accumulated water.

[0078] The strip-shaped sheet P1 conveyed to the first unit group 101 arrives at the first cutting unit 81. The first cutting unit 81 cuts the strip-shaped sheet P1 in a direction intersecting the conveying direction, for example, in a direction along the X axis. The strip-shaped sheet P1 is cut into single sheets P2 in the first cutting unit 81. The single sheets P2 are conveyed from the first cutting unit 81 to the second cutting unit 82.

[0079] The second cutting unit 82 cuts the single sheet P2 in the conveying direction, for example, in the direction along the Y axis. Specifically, the second cutting unit 82 cuts the single sheet P2 near the sides along the direction of the X axis. Thus, the single sheet P2 becomes a sheet P3 of a predetermined shape such as A4 size or A3 size.

[0080] When the single sheet P2 is cut into sheets P3 in the second cutting section 82, thin strips S are produced as end materials. The thin strips S are transported in the approximate -Y direction and reach the shredder section 95 as a pulverizer. The shredder section 95 shreds the thin strips S and supplies the shredded pieces to the confluence section 17. Between the shredder section 95 and the confluence section 17, a mechanism for measuring the shredded pieces of the thin strips S and supplying them to the confluence section 17 may be provided.

[0081] The sheet P3 is conveyed substantially upward and collected on the tray 91. In the above manner, the sheet P3 is manufactured in the sheet manufacturing apparatus 1. The sheet P3 can be used as a substitute for copy paper or the like, for example.

[0082] like Figure 2 As shown, the cleaning section 41 is located slightly above the process roller 71 in the -Y direction and arranged along the process roller 71. The cleaning section 42 is located below the process roller 72 in the -Y direction and arranged along the process roller 72.

[0083] The cleaning device 401 includes the above-mentioned control unit 5 and the cleaning unit 41. The cleaning device 402 includes the control unit 5 and the cleaning unit 42. In addition, the cleaning devices 401 and 402 may each include an independent control unit.

[0084] In the direction along the X-axis, the length of the cleaning portion 41 is substantially equal to the length of the side surface of the process roller 71. Similarly, the length of the cleaning portion 42 is substantially equal to the length of the process roller 72.

[0085] like Figure 3 As shown in FIG. 1 , the cleaning unit 41 includes a cleaning roller unit 130, a scraper unit 141, an operating unit 120, a gear set 110, a paper powder recovery unit 153, a support member 135, and a frame unit 115. The cleaning unit 41 also includes a hammer unit 144 described later. Figure 3 , a cleaning roller driving motor 541 included in the control unit 5 is also illustrated.

[0086] The cleaning roller unit 130 includes a first cleaning roller 131 and a second cleaning roller 133. The cleaning roller unit 130 cleans the process roller 71. The hammer unit 144 cleans the scraper unit 141.

[0087] The first cleaning roller 131 is a substantially cylindrical member, and the height direction of the cylinder is arranged along the X-axis. Both ends of the first cleaning roller 131 along the X-axis are supported on the support member 135, and the first cleaning roller 131 rotates around the rotation axis along the X-axis. The first cleaning roller 131 is driven to rotate by one of the gears in the gear group 110.

[0088] The second cleaning roller 133 is a substantially cylindrical member, the height direction of the cylinder is along the X-axis, and is arranged in parallel with the first cleaning roller 131 in the direction along the Y-axis. Both ends of the second cleaning roller 133 along the X-axis are supported on the support member 135, and the second cleaning roller 133 rotates around the rotation axis along the X-axis. The second cleaning roller 133 is also driven to rotate by one of the gears in the gear group 110.

[0089] The scraper portion 141 extends along the side surface of the second cleaning roller 133. The scraper portion 141 is supported by the support member 135.

[0090] The operating unit 120 includes a shaft 121 and cam components 123a and 123b. The shaft 121 is a rod-shaped component arranged along the X axis. The cam component 123a is installed near the end of the shaft 121 in the +X direction, and the cam component 123b is installed near the end of the shaft 121 in the -X direction.

[0091] The shaft 121 is supported on the frame 115 and rotates around the rotation axis along the X axis. The end of the shaft 121 in the -X direction is directly connected to one of the gears in the gear group 110. When the gear group 110 is driven, the shaft 121 is driven to rotate. The cam members 123a and 123b rotate in conjunction with the rotation of the shaft 121 around the shaft 121 as the rotation center.

[0092] The gear set 110 includes a plurality of gears (not shown). The plurality of gears are rotated by the driving of the cleaning roller drive motor 541, thereby rotating the shaft 121, the first cleaning roller 131, and the second cleaning roller 133. The gear set 110 and the cleaning roller drive motor 541 are disposed at the end of the frame 115 in the -X direction.

[0093] The support member 135 includes a main body portion (not shown) along the XZ plane when viewed from above, and support portions 135a and 135b protruding from both ends of the main body portion along the X-axis in the +Y direction. The support portions 135a and 135b are opposed to each other in the direction along the X-axis. The operating unit 120, the first cleaning roller 131, the second cleaning roller 133, and the scraper portion 141 are arranged between the support portions 135a and 135b. That is, the support portions 135a and 135b support the operating unit 120, the first cleaning roller 131, the second cleaning roller 133, and the scraper portion 141.

[0094] The support member 135 can change its posture relative to the frame portion 115 while being supported by the frame portion 115. The change in posture of the support member 135 will be described later.

[0095] The frame portion 115 is a member that is roughly frame-shaped when viewed from above, and a support member 135 is arranged inside the frame portion 115. With respect to the end portion of the frame portion 115 in the -X direction, the gear group 110 is arranged on the outside, that is, in the -X direction, and the cleaning roller drive motor 541 is arranged on the inside, that is, in the +X direction. The cleaning roller drive motor 541 includes a shaft (not shown) as an output shaft. The shaft extends through the frame portion 115 in the -X direction and is directly connected to one of the multiple gears of the gear group 110. The frame portion 115 is supported on the frame of the third unit group 103 of the sheet manufacturing device 1.

[0096] like Figure 4 As shown in FIG. 1 , in the cleaning section 41 , the first cleaning roller 131 is located slightly above the process roller 71 in the −Y direction and is arranged so as to abut against the process roller 71 . Figure 4 FIG. 2 shows a state in which the first cleaning roller 131 contacts the processing roller 71 and cleans the side surface of the processing roller 71. Figure 4 In the description, unless otherwise specified, the description is given for the state of being viewed from the side in the -X direction.

[0097] The first cleaning roller 131 cleans the process roller 71. Specifically, the first cleaning roller 131 has a cleaning layer 131a at the outer periphery of the side surface. The cleaning layer 131a cleans the side surface of the process roller 71 by contacting the side surface of the process roller 71.

[0098] The cleaning layer 131 a cleans paper dust and the like adhering to the process roller 71 . Therefore, the cleaning capability of the cleaning roller portion 130 for the process roller 71 can be improved.

[0099] The cleaning layer 131a of the first cleaning roller 131 is made of felt material. Therefore, paper dust and the like are easily entangled in the cleaning layer 131a. In addition, the cleaning layer 131a is easy to follow the shape of the side surface of the processing roller 71. Thus, the cleaning ability of the processing roller 71 achieved by the first cleaning roller 131 can be further improved.

[0100] The second cleaning roller 133 cleans the first cleaning roller 131. Specifically, the second cleaning roller 133 has a bristle-like surface layer 133a at the outer periphery of the side surface. In the surface layer 133a, a plurality of bristles are arranged approximately radially from the rotation center. The cleaning layer 131a of the first cleaning roller 131 and the surface layer 133a are arranged in a mutually overlapping manner. Thus, the surface layer 133a cleans the first cleaning roller 133 in a manner of abutting against the cleaning layer 131a of the first cleaning roller 131.

[0101] The surface layer 133a cleans the paper dust and the like transferred from the process roller 71 to the first cleaning roller 131, thereby maintaining the cleanliness of the first cleaning roller 131. Therefore, the cleaning ability of the cleaning roller unit 130 for the process roller 71 can be easily maintained.

[0102] The process roller 71 , the first cleaning roller 131 , and the second cleaning roller 133 rotate clockwise.

[0103] The scraper portion 141 is disposed below the second cleaning roller 133. The scraper portion 141 is a substantially rectangular plate-shaped member, and its main surface is along the XZ plane. The scraper portion 141 cleans the surface layer 133a of the second cleaning roller 133 in the cleaning roller portion 130 by contacting the surface layer 133a of the second cleaning roller 133. In the direction along the X-axis, the length of the scraper portion 141 is substantially equal to the length of the surface layer 133a of the second cleaning roller 133.

[0104] The scraper 141 is supported by the support member 135 via the fixing member 143, and is arranged so that the upper end is buried in the plurality of bristles of the surface layer 133a. The distance by which the scraper 141 is buried in the surface layer 133a is, for example, about 1 mm.

[0105] The second cleaning roller 133 is cleaned by the scraper 141 from the paper dust and the like transferred from the first cleaning roller 131 to maintain cleanliness. Therefore, it becomes easy to continuously maintain the cleaning ability of the cleaning roller 130 for the process roller 71.

[0106] The support member 135 is rotatably supported by the frame portion 115 with the rotation axis 137 as the rotation center. A spring member 151 is arranged along the Z axis in the -Y direction of the support member 135. The upper end of the spring member 151 is fixed to the support member 135, and the lower end is fixed to the frame portion 115.

[0107] The support member 135 is urged in the counterclockwise direction about the rotation shaft 137 by the spring member 151 . Therefore, the first cleaning roller 131 comes into contact with the process roller 71 by the urging force of the spring member 151 .

[0108] The operating unit 120 is arranged in the -Y direction with respect to the upper end of the support member 135 and is opposed in the direction along the Y axis. The cam member 123a and the cam member 123b (not shown) rotate to switch the contact and separation of the first cleaning roller 131 with respect to the process roller 71. That is, the control unit 5 controls the operating unit 120 to switch the contact and separation of the first cleaning roller 131 with respect to the process roller 71.

[0109] Thus, the first cleaning roller 131 can be appropriately separated from the process roller 71. Compared with the case where the first cleaning roller 131 is always in contact with the process roller 71, the occurrence of wear and deformation of the cleaning layer 131a can be suppressed in the first cleaning roller 131. In addition, the processing of the web W described above is performed while the first cleaning roller 131 is in contact with the process roller 71.

[0110] The cam members 123a and 123b are respectively asymmetrically shaped with respect to the shaft portion 121 serving as the rotation center and have protrusions not shown in the figure. When the first cleaning roller 131 is brought into contact with the processing roller 71, the protrusions are moved in a direction substantially opposite to the upper end of the support member 135, thereby isolating the cam members 123a and 123b from the upper end of the support member 135.

[0111] When the first cleaning roller 131 is separated from the process roller 71, the shaft 121 rotates so that the protrusion contacts the upper end of the support member 135. Therefore, the protrusion applies force to the upper end in the +Y direction, and the support member 135 rotates clockwise by a certain distance. As a result, the posture of the support member 135 changes so that the first cleaning roller 131 is separated from the process roller 71.

[0112] The control unit 5 includes a sensor unit 511. The sensor unit 511 detects the amount of paper dust and the like attached to the surface layer 133a of the second cleaning roller 133. When the amount of the paper dust reaches a predetermined value, that is, when a certain amount of the paper dust is transferred to the second cleaning roller 133, the control unit 5 separates the first cleaning roller 131 from the processing roller 71. Furthermore, the control unit 5 causes the hammer unit 144 to clean the scraper unit 141.

[0113] As the sensor unit 511, for example, a well-known RGB image sensor can be cited. In addition, the predetermined amount of the paper dust that reaches and adheres to the second cleaning roller 233 refers to, for example, the surface area.

[0114] The paper dust recovery unit 153 is disposed below the second cleaning roller 133 and the scraper unit 141. The paper dust recovery unit 153 is a box-shaped member with an upper portion open, and mainly recovers and stores paper dust and the like dropped from the second cleaning roller 133 and the scraper unit 141. The paper dust and the like stored in the paper dust recovery unit 153 can be removed by removing the paper dust recovery unit 153 from the sheet manufacturing apparatus 1.

[0115] like Figure 5 As shown in FIG. 1 , the cleaning unit 42 includes a cleaning roller unit 230, a scraper unit 241, an operating unit 220, a gear set 210, a paper powder recovery unit 253, a support member 235, and a frame unit 215. The cleaning unit 42 also includes a hammer unit 244 described later. Figure 5 , a cleaning roller driving motor 542 included in the control unit 5 is also illustrated.

[0116] The cleaning roller unit 230 includes a first cleaning roller 231 and a second cleaning roller 233. The cleaning roller unit 230 cleans the process roller 72. The hammer unit 244 cleans the scraper unit 241.

[0117] The first cleaning roller 231 is a substantially cylindrical member, and the height direction of the cylinder is arranged along the X-axis. Both ends of the first cleaning roller 231 along the X-axis are supported on the support member 235, and the first cleaning roller 231 rotates around the rotation axis along the X-axis. The first cleaning roller 231 is driven to rotate by one of the gears in the gear group 210.

[0118] The second cleaning roller 233 is a substantially cylindrical member, the height direction of the cylinder is along the X-axis, and is arranged in parallel with the first cleaning roller 231 in the direction along the Z-axis. Both ends of the second cleaning roller 233 along the X-axis are supported on the support member 235, and the second cleaning roller 233 rotates around the rotation axis along the X-axis. The second cleaning roller 233 is also driven to rotate by one of the gears in the gear group 210.

[0119] The scraper portion 241 extends along the side surface of the second cleaning roller 233. The scraper portion 241 is supported by the support member 235.

[0120] The action part 220 includes a shaft 221, and cam members 223a and 223b. The shaft 221 is a rod-shaped member arranged along the X axis. The cam member 223a is installed near the end of the shaft 221 in the +X direction, and the cam member 223b is installed near the end of the shaft 221 in the -X direction.

[0121] The shaft 221 is supported on the frame 215 and rotates around the rotation axis along the X axis. The end of the shaft 221 in the -X direction is directly connected to one of the gears in the gear group 210. When the gear group 210 is driven, the shaft 221 is driven to rotate. The cam members 223a and 223b rotate around the shaft 221 as the rotation center in conjunction with the rotation of the shaft 221.

[0122] The gear set 210 includes a plurality of gears not shown. The plurality of gears are rotated by the driving of the cleaning roller drive motor 542, thereby rotating the shaft 221, the first cleaning roller 231, and the second cleaning roller 233. The gear set 210 and the cleaning roller drive motor 542 are disposed at the end of the frame 215 in the -X direction.

[0123] The support member 235 includes a main body portion (not shown) along the XZ plane when viewed from above, and support portions 235a and 235b protruding upward from both ends of the main body portion along the X-axis. The support portions 235a and 235b are opposed to each other in the direction along the X-axis. The operating portion 220, the first cleaning roller 231, the second cleaning roller 233, and the scraper portion 241 are arranged between the support portions 235a and 235b. That is, the support portions 235a and 235b support the operating portion 220, the first cleaning roller 231, the second cleaning roller 233, and the scraper portion 241.

[0124] The support member 235 can change its posture relative to the frame portion 215 while being supported by the frame portion 215. The change in posture of the support member 235 will be described later.

[0125] The frame portion 215 is a member that is roughly frame-shaped when viewed from above, and a support member 235 is arranged inside the frame portion 215. With respect to the end portion of the frame portion 215 in the -X direction, the gear group 210 is arranged on the outside, that is, in the -X direction, and the cleaning roller drive motor 542 is arranged on the inside, that is, in the +X direction. The cleaning roller drive motor 542 includes a shaft (not shown) as an output shaft. The shaft extends through the frame portion 215 in the -X direction and is directly connected to one of the multiple gears of the gear group 210. The frame portion 215 is supported on the frame of the third unit group 103 of the sheet manufacturing device 1.

[0126] like Figure 6 As shown in FIG. 2 , in the cleaning section 42 , the first cleaning roller 231 is located slightly below the process roller 72 in the −Y direction and is arranged so as to abut against the process roller 72 . Figure 6 FIG. 2 shows a state in which the first cleaning roller 231 contacts the processing roller 72 and cleans the side surface of the processing roller 72. Figure 6 In the description, unless otherwise specified, the description is given for the state of being viewed from the side in the -X direction.

[0127] The first cleaning roller 231 cleans the process roller 72. Specifically, the first cleaning roller 231 has a cleaning layer 231a at the outer periphery of the side surface. The cleaning layer 231a cleans the side surface of the process roller 72 by contacting the side surface of the process roller 72.

[0128] The cleaning layer 231 a cleans paper dust and the like adhering to the process roller 72 . Therefore, the cleaning ability of the cleaning roller portion 230 for the process roller 72 can be improved.

[0129] The cleaning layer 231a of the first cleaning roller 231 is made of felt material. Therefore, paper dust and the like are easily entangled in the cleaning layer 231a. In addition, the cleaning layer 231a is easily adapted to the shape of the side surface of the processing roller 72. Thus, the cleaning capability of the processing roller 72 achieved by the first cleaning roller 231 can be further enhanced.

[0130] The second cleaning roller 233 cleans the first cleaning roller 231. Specifically, the second cleaning roller 233 has a bristle-like surface layer 233a at the outer periphery of the side surface. In the surface layer 233a, a plurality of bristles are arranged approximately radially from the rotation center. The cleaning layer 231a of the first cleaning roller 231 and the surface layer 233a are arranged in a mutually overlapping manner. Thus, the surface layer 233a cleans the first cleaning roller 231 in a manner of abutting against the cleaning layer 231a of the first cleaning roller 231.

[0131] The surface layer 233a cleans the paper dust and the like transferred from the process roller 72 to the first cleaning roller 231, thereby maintaining the cleanliness of the first cleaning roller 231. Therefore, the cleaning ability of the cleaning roller unit 230 for the process roller 72 can be easily maintained.

[0132] The process roller 72 , the first cleaning roller 231 , and the second cleaning roller 233 rotate counterclockwise.

[0133] The scraper portion 241 is disposed below the second cleaning roller 233. The scraper portion 241 is a substantially rectangular plate-shaped member, and its main surface is along the XZ plane. The scraper portion 241 cleans the surface layer 233a of the second cleaning roller 233 in the cleaning roller portion 230 by contacting the surface layer 233a of the second cleaning roller 233. In the direction along the X-axis, the length of the scraper portion 241 is substantially equal to the length of the surface layer 233a of the second cleaning roller 233.

[0134] The scraper part 241 is supported by the support member 235 via the fixing member 243, and is arranged so that the upper end is buried in the plurality of bristles of the surface layer 233a. The distance by which the scraper part 241 is buried in the surface layer 233a is, for example, about 1 mm.

[0135] The second cleaning roller 233 cleans the paper dust and the like transferred from the first cleaning roller 231 by the scraper portion 241 to maintain cleanliness. Therefore, it becomes easy to continuously maintain the cleaning ability of the cleaning roller portion 230 for the process roller 72.

[0136] The support member 235 is rotatably supported by the frame portion 215 with the rotation axis 237 as the rotation center. A spring member 251 is arranged along the Y axis below the support member 235. The end of the spring member 251 in the -Y direction is fixed to the support member 235, and the end in the +Y direction is fixed to the frame portion 215.

[0137] The support member 235 is urged in the counterclockwise direction about the rotation shaft 237 by the spring member 251 . Therefore, the first cleaning roller 231 comes into contact with the process roller 72 by the urging force of the spring member 251 .

[0138] The operating unit 220 is arranged in the +Y direction relative to the lower end of the support member 235 and is opposed in the direction along the Y axis. The cam member 223a and the cam member 223b (not shown) rotate to switch the contact and separation of the second cleaning roller 233 with respect to the process roller 72. That is, the control unit 5 controls the operating unit 220 to switch the contact and separation of the first cleaning roller 231 with respect to the process roller 72.

[0139] Thus, the first cleaning roller 231 can be appropriately isolated from the processing roller 72. Compared with the case where the first cleaning roller 231 is always in contact with the processing roller 72, the occurrence of wear and deformation of the cleaning layer 231a can be suppressed in the first cleaning roller 231. In addition, the processing of the web W described above is performed while the first cleaning roller 231 is in contact with the processing roller 72.

[0140] The cam members 223a and 223b are respectively asymmetrically shaped with respect to the shaft portion 221 serving as the rotation center and have protrusions not shown in the figure. When the first cleaning roller 231 is brought into contact with the processing roller 72, the protrusions are positioned in a direction substantially opposite to the upper end of the support member 235, thereby isolating the cam members 223a and 223b from the lower end of the support member 235.

[0141] When the first cleaning roller 231 is separated from the processing roller 72, the shaft 221 rotates so that the protrusion contacts the upper end of the support member 235. Therefore, the protrusion applies force to the upper end in the -Y direction, so that the support member 235 rotates clockwise by a certain distance. As a result, the posture of the support member 235 changes, and the first cleaning roller 231 is separated from the processing roller 72.

[0142] The control unit 5 has a sensor unit 521. The sensor unit 521 detects the amount of paper dust and the like attached to the surface layer 233a of the second cleaning roller 233. When the amount of the paper dust reaches a predetermined value, that is, when a certain amount of the paper dust is transferred to the second cleaning roller 233, the control unit 5 separates the first cleaning roller 231 from the processing roller 72. Furthermore, the control unit 5 causes the hammer unit 244 to clean the scraper unit 241. Cleaning of the scraper unit 241 will be described later.

[0143] As the sensor unit 521, for example, a well-known RGB image sensor can be cited. In addition, the predetermined amount of the amount of paper dust that reaches and adheres to the second cleaning roller 233 refers to, for example, the surface area.

[0144] The paper dust recovery unit 253 is disposed below the second cleaning roller 233 and the scraper unit 241. The paper dust recovery unit 253 is a box-shaped member with an upper portion open, and mainly recovers and stores paper dust and the like dropped from the second cleaning roller 233 and the scraper unit 241. The paper dust and the like stored in the paper dust recovery unit 253 can be removed by removing the paper dust recovery unit 253 from the sheet manufacturing apparatus 1.

[0145] Reference Figures 7 to 13 , the structure and operation of the hammer 244 in the cleaning section 42 will be described. In addition, although the cleaning section 41 and the cleaning section 42 are configured differently, the basic structure and operation are the same. Therefore, the cleaning section 42 is described as a representative example, and the description related to the hammer 144 of the cleaning section 41 is omitted.

[0146] like Figure 7 As shown, the hammer body 244 of the cleaning part 42 has a shaft 244a, an arm 244b, a striking part 244c, and a spring part 244d. In addition, although not shown, the hammer body 244 also has a rolling part and a rod. The rolling part is one of the multiple gears of the gear set 210 mentioned above. Here, Figure 7 The hammer body 244 is shown in a state where a striking operation described later is not being performed.

[0147] The shaft portion 244a extends along the X-axis, and is supported by the frame portion 215 so as to be rotatable around a rotation axis along the X-axis. An arm portion 244b and a spring portion 244d are fixed to the shaft portion 244a.

[0148] The arm portion 244b faces the fixing member 243 in the direction along the Y axis. A striking portion 244c is disposed at the upper end portion of the arm portion 244b.

[0149] The scraper part 241 is fixed in a manner protruding upward at the upper end of the fixing member 243. An impact receiving part 242 is additionally provided in the +Y direction of the scraper part 241. In other words, the scraper part 241 is clamped by the fixing member 243 and the impact receiving part 242. The impact receiving part 242 is fixed relative to the fixing member 243 at a position abutting against the striking part 244c.

[0150] The striking portion 244c is located at the upper end of the arm portion 244b and faces the -Y direction, and is arranged so as to abut against the impact receiving portion 242. As a striking action of the hammer body portion 244, the striking portion 244c strikes and abuts against the impact receiving portion 242 after being temporarily isolated from the impact receiving portion 242 at the initial stage of the striking action achieved by the hammer body portion 244. Thus, the impact of the striking of the striking portion 244c is transmitted to the scraper portion 241 via the impact receiving portion 242. The above-mentioned impact has the effect of knocking off the paper pieces and the like attached to the scraper portion 241 from the scraper portion 241.

[0151] Since the impact is indirectly applied to the scraper 241 through the impact receiving portion 242, it is difficult for the scraper 241 to be damaged. In addition, it is difficult for paper dust attached to the scraper 241 to adhere to the striking portion 244c, so that contamination of the striking portion 244c can be suppressed.

[0152] The spring portion 244d is arranged on the shaft portion 244a in such a manner as to generate a biasing force in the rotation direction relative to the rotation axis of the shaft portion 244a. Specifically, the spring portion 244d is, for example, a torsion spring, one end of which is fixed to the shaft portion 244a, and the other end of which is fixed to the frame portion 215. Thus, when viewed from the side from the -X direction, the shaft portion 244a is biased counterclockwise, so that the striking portion 244c is pressed against the impact receiving portion 242.

[0153] like Figure 8 As shown in FIG. 1 , the impact receiving portion 242 is a substantially plate-shaped member and extends in the direction along the X-axis. In the direction along the X-axis, the lengths of the scraper portion 241, the impact receiving portion 242, and the upper end of the arm portion 244b are substantially equal. Figure 8 , a state in which the striking portion 244 c and the impact receiving portion 242 are separated from each other is illustrated.

[0154] like Fig. 9As shown, the rod portion 244e is fixed at the end of the shaft portion 244a in the -X direction. The striking portion 244c is a protrusion in four locations protruding in the -Y direction. The four striking portions 244c are arranged along the X axis. Each striking portion 244c protrudes in an arc shape in the -Y direction when viewed from the side from the -X direction. During the striking action of the hammer body portion 244, the above-mentioned arc-shaped protruding area strikes the impact receiving portion 242, thereby applying an impact to the scraper portion 241. In addition, the shape, configuration, and number of the striking portions 244c are not limited to the above contents.

[0155] like Fig.10 As shown, the gear set 210 includes gears G1, G2, G3, G4, G5, G6, G7, and gears G14, G15, G16, and G17. Gears G1 to G7, and gears G14 to G17 are arranged to mesh with each other in the above order. Gear G1 is directly connected to the output shaft of the cleaning roller drive motor 542. Each gear of the gear set 210 rotates along the rotation axis of the X axis.

[0156] The rotational driving force of the cleaning roller driving motor 542 is transmitted from the gear G1 to the gear G2. The gear G2 includes a gear (not shown) that meshes with the gear G3 in the +X direction of the gear meshing with the gear G1. Therefore, the rotational driving force is transmitted from the gear G2 to the gear G3, and further from the gear G3 to the gear G4, the gear G5, the gear G6, and the gear G7 in sequence. In addition, the rotational driving force is also transmitted from the gear G3 to the gears G14, the gear G15, the gears G16, and 17 in sequence.

[0157] The rod 244e of the hammer 244 is arranged to correspond to the gear G5 as the winding portion. The rod 244e is urged in the clockwise direction about the shaft 244a as the rotation axis by coming into contact with and riding on a convex portion of the gear G5 described later.

[0158] The end portion of the first cleaning roller 231 in the -X direction is fixed to the gear G16. The end portion of the second cleaning roller 233 in the -X direction is fixed to the gear G17.

[0159] When the cleaning roller drive motor 542 is driven counterclockwise when viewed from the side in the -X direction, the rotational drive force is sequentially transmitted, causing the gears G5 and G7 to rotate counterclockwise, thereby implementing the striking action of the hammer body 244 and the posture change of the support member 235 achieved by the action unit 220.

[0160] like Fig.11As shown in FIG. 1 , the rolled portion of the hammer body 244, i.e., the gear G5, has a convex portion G5a. The convex portion G5a is arranged in the -X direction of the gear G5. When viewed from the side from the -X direction, the convex portion G5a has a shape that protrudes from the rotation axis of the gear G5 in the radial direction of the gear G5. Figures 11 to 13 In the description, unless otherwise specified, the description is given for the state of being viewed from the side in the -X direction.

[0161] When viewed from above, the convex portion G5a is located at a position where it intersects and contacts the tip of the rod portion 244e when the gear G5 rotates. Fig.11 At this time, the striking portion 244c is brought into contact with the impact receiving portion 242 by the counterclockwise biasing force of the spring portion 244d.

[0162] Next, if Fig.12 As shown, when the gear G5 rotates counterclockwise, the tip of the rod 244e comes into contact with the convex portion G5a. In this state, the striking portion 244c also comes into contact with the impact receiving portion 242.

[0163] Next, if Fig.13 As shown, when the gear G5 further rotates counterclockwise, the top end of the rod 244e will ride on the convex portion G5a. As a result, the rod 244e is urged clockwise, so that the rotational force in the clockwise direction acts on the shaft 244a. In other words, the gear G5 applies a compressive force to the spring portion 244d via the rod 244e.

[0164] Although the spring portion 244 d exerts a counterclockwise biasing force on the shaft portion 244 a , the compressive force is stronger than the biasing force, so that the shaft portion 244 a and the arm portion 244 b rotate clockwise to separate the striking portion 244 c from the impact receiving portion 242 .

[0165] Next, when the gear G5 further rotates counterclockwise, the convex portion G5a is separated from the top of the rod portion 244e. As a result, the rotational force acting on the rod portion 244e and the shaft portion 244a through the convex portion G5a is eliminated, and the above-mentioned compression force generated by the gear G5 is released. Moreover, at the moment when the convex portion G5a is separated from the rod portion 244e, the shaft portion 244a will quickly rotate counterclockwise due to the rebound force of the spring portion 244d relative to the above-mentioned compression force. As a result, the striking portion 244c will strike the impact-bearing portion 242 and thus impact the scraper portion 241. The above is the principle of the striking action achieved by the hammer body portion 244.

[0166] Reference Figures 14 to 19, the cleaning function of the cleaning unit 42 is described. Although the cleaning units 41 and 42 are configured differently, they have the same cleaning function. Therefore, the cleaning unit 42 is used as a representative example for description, and the description related to the cleaning function of the cleaning unit 41 is omitted. Figures 14 to 19 In the description, unless otherwise specified, the description is given for the state of being viewed from the side in the -X direction.

[0167] like Fig.14 As shown in FIG. 1 , paper dust D from the web W described above may adhere to the side surface of the process roller 72 due to the operation of the sheet manufacturing apparatus 1 .

[0168] The cleaning layer 231a of the first cleaning roller 231 abuts against the side surface of the processing roller 72. While the first cleaning roller 231 abuts against the processing roller 72, the processing roller 72, the first cleaning roller 231, and the second cleaning roller 233 rotate counterclockwise. At this time, the cleaning layer 231a of the first cleaning roller 231 is pressed against the side surface of the processing roller 72 due to the force of the spring member 251.

[0169] Next, if Fig.15 As shown in FIG. 1 , the paper dust D attached to the side surface of the process roller 72 reaches the area where the process roller 72 contacts the cleaning layer 231a due to the rotation of the process roller 72. Then, the first cleaning roller 231 contacts the process roller 72 while rotating, thereby cleaning the side surface of the process roller 72. That is, the paper dust D attached to the side surface of the process roller 72 is transferred to the first cleaning roller 231 in a manner of being entangled with the cleaning layer 231a.

[0170] Next, if Fig.16 As shown, the paper dust D transferred to the cleaning layer 231a is transferred to the second cleaning roller 233 by being entangled with the bristle material of the surface layer 233a of the second cleaning roller 233. Thus, the cleaning layer 231a of the first cleaning roller 231 can be cleaned, and the cleaning ability of the first cleaning roller 231 can be maintained.

[0171] Next, if Fig.17 As shown, the paper dust D transferred to the surface layer 233a of the second cleaning roller 233 is scraped away by the scraper 241 due to the rotation of the second cleaning roller 233. Thus, the surface layer 233a of the second cleaning roller 233 can be cleaned, so that the cleaning ability of the second cleaning roller 233 for the first cleaning roller 231 can be maintained.

[0172] Although not shown in the figure, as described above, the sensor unit 521 detects the amount of paper dust D attached to the second cleaning roller 233. When the amount of the paper dust D reaches a predetermined value, the control unit 5 operates the hammer unit 244 to apply an impact to the scraper unit 241 through the above-mentioned striking action. Since the striking action of the hammer unit 244 is automatically performed under the control of the control unit 5, the convenience of the user of the sheet manufacturing apparatus 1 can be improved.

[0173] The state in which a predetermined amount of paper dust D is attached to the second cleaning roller 233 refers to, for example, a state in which the scraper portion 241 is saturated with the paper dust D attached. In this state, the cleaning ability of the second cleaning roller 233 by the scraper portion 241 is reduced, and thus the cleaning ability of the first cleaning roller 231 by the second cleaning roller 233 is also reduced. Therefore, the paper dust D attached to the scraper portion 241 is removed by impact, so that the cleaning ability of the scraper portion 241 is restored, and further, the cleaning ability of the second cleaning roller 233 is also restored.

[0174] Alternatively, the predetermined amount of paper dust D may be set to a low value so that the striking operation is performed before the scraper 241 is saturated with the paper dust D. Thus, the cleaning ability of the first cleaning roller 231 can be maintained high.

[0175] That is, Fig.18 As shown in FIG. 1 , the gear G5 is rotated, so that the shaft 244a and the arm 244b are rotated clockwise by a certain distance. As a result, the striking part 244c is separated from the impact receiving part 242. Furthermore, the gear G5 is further rotated, so that Fig.19 As shown in the figure, the shaft 244a and the arm 244b are instantly rotated counterclockwise by the rebound force of the spring portion 244d. Therefore, the striking portion 244c strikes the impact receiving portion 242, thereby applying an impact to the scraper portion 241. As a result, the paper dust D attached to the scraper portion 241 falls and is recovered in the paper dust recovery portion 253 (not shown).

[0176] In the above manner, the cleaning ability of the cleaning unit 42 for the processing roller 72 is continuously maintained. In addition, as described above, the function of the cleaning unit 41 is the same as that of the cleaning unit 42. Therefore, the cleaning ability of the cleaning unit 41 corresponding to the processing roller 71 is also continuously maintained in the same manner as that of the cleaning unit 42.

[0177] Although in Fig.18 as well as Fig.19In the embodiment, the hammer 244 performs the striking action while the processing roller 72 is in contact with the first cleaning roller 231, but the present invention is not limited thereto. Preferably, the control unit 5 applies the impact from the hammer 244 to the scraper 241 while the first cleaning roller 231 is spaced from the processing roller 72.

[0178] In order to separate the first cleaning roller 231 from the processing roller 72, the operation unit 220 is operated. Figure 6 From the state, such as Fig. 20 As shown in FIG. 1 , the posture of the support member 235 is changed by the operation unit 220. Specifically, the shaft 221 is rotated so that the protrusion of the cam member 223a abuts against the lower end of the support member 235 from the +Y direction. Although not shown in the figure, the cam member 223b abuts against the lower end of the support member 235 corresponding to the cam member 223b from the +Y direction in conjunction with the cam member 223a.

[0179] At this time, the lower ends of the support members 235 are urged in the substantially -Y direction by the contact of the cam members 223a and 223b. This urging force is larger than the urging force of the spring member 251. Therefore, the support member 235 rotates clockwise by a certain distance with the rotation axis 237 as the rotation center. In addition, the first cleaning roller 231 is separated from the processing roller 72.

[0180] Thus, while the web W is being processed, no impact is applied from the hammer 244 to the scraper 241. Therefore, the impact applied by the hammer 244 and vibrations such as the reaction force of the impact are not transmitted to the processing roller 72, etc. Therefore, in the strip-shaped sheet P1 formed from the web W, the quality such as thickness can be prevented from being reduced.

[0181] In the cleaning section 41 , for the same reason, it is preferable that an impact is applied from the weight section 144 to the scraper section 141 while the first cleaning roller 131 is spaced apart from the process roller 71 .

[0182] In order to separate the first cleaning roller 131 from the processing roller 71, the operation unit 120 is operated. Figure 4 From the state, such as Fig.21 As shown in FIG. 1 , the posture of the support member 135 is changed by the operation unit 120. Specifically, the shaft 121 is rotated so that the protrusion of the cam member 123a abuts against the upper end of the support member 135 from the -Y direction. Although not shown in the figure, the cam member 123b abuts against the upper end of the support member 135 corresponding to the cam member 123b from the -Y direction in conjunction with the cam member 123a.

[0183] At this time, the upper ends of the support members 135 are urged in the approximately +Y direction by the contact of the cam members 123a and 123b. This urging force is larger than the urging force of the spring member 151. Therefore, the support member 135 rotates clockwise by a certain distance with the rotation axis 137 as the rotation center. In addition, the first cleaning roller 131 is separated from the processing roller 71.

[0184] According to this embodiment, the following effects can be obtained.

[0185] The cleaning ability of the cleaning rollers 130 and 230 can be continuously maintained. Specifically, the paper dust D and the like attached to the processing roller 71 are cleaned and transferred to the cleaning roller 130. The paper dust D and the like transferred to the cleaning roller 130 are transferred to the scraper 141 in a manner that the scraper 141 scrapes them away. The paper dust D and the like transferred to the scraper 141 are knocked off from the scraper 141 by the impact from the hammer 144.

[0186] In the same manner, the paper dust D and the like attached to the processing roller 72 are cleaned and transferred to the cleaning roller portion 230. The paper dust D and the like transferred to the cleaning roller portion 230 are transferred to the scraper portion 241 in a manner that the scraper portion 241 scrapes them away. The paper dust D and the like transferred to the scraper portion 241 are knocked off from the scraper portion 241 by the impact from the hammer portion 244.

[0187] Therefore, paper dust D and the like are less likely to accumulate on the cleaning rollers 130, 230 and the scraper parts 141, 241, and the cleanliness of the cleaning rollers 130, 230 can be maintained. As a result, the cleaning performance of the cleaning rollers 130, 230 corresponding to the process rollers 71, 72 is continuously maintained. Therefore, the sheet manufacturing apparatus 1 and the cleaning devices 401, 402 that can continuously maintain the cleaning performance of the cleaning rollers 130, 230 can be provided.

[0188] Explanation of symbols

[0189] 1…sheet manufacturing device; 5…control unit; 401, 402…cleaning device; 41, 42…cleaning unit; 71, 72…processing roller; 120, 220…acting unit; 130, 230…cleaning roller unit; 131, 231…first cleaning roller; 131a, 231a…cleaning layer; 133, 233…second cleaning roller; 133a, 233a…surface layer; 141, 241…scraper unit; 144, 244…hammer unit; 242…impact bearing unit; 244c…striking unit; 244d…spring unit; 244e…rod unit; 511, 521…sensor unit; D…paper powder; G5…gear as a winding unit; W…sheet.

Claims

1. A sheet manufacturing device, characterized in that: have: a processing roller that processes the web containing the fibers; A cleaning part, comprising a cleaning roller part, a scraper part, and a hammer part; Control Department, The cleaning roller section cleans the processing roller. The scraper portion cleans the cleaning roller portion. The control unit operates the hammer unit to apply impact to the scraper unit.

2. The sheet manufacturing device according to claim 1, wherein: The cleaning roller unit includes a first cleaning roller, the first cleaning roller abutting against the processing roller, The first cleaning roller has a cleaning layer for cleaning the process roller.

3. The sheet manufacturing device according to claim 2, characterized in that: The cleaning roller unit includes a second cleaning roller, the second cleaning roller abutting against the first cleaning roller, The second cleaning roller has a brush-like surface layer that cleans the first cleaning roller.

4. The sheet manufacturing device according to claim 3, characterized in that: The scraper portion contacts the surface layer of the second cleaning roller.

5. The sheet manufacturing device according to claim 1, wherein: The hammer body has a rolling portion, a rod portion, a spring portion, and a striking portion. The rolling portion applies a compressive force to the spring portion via the rod portion, When the compressive force generated by the rolling portion is released, the striking portion applies the impact to the scraper portion by the resilience of the spring portion with respect to the compressive force.

6. The sheet manufacturing device according to claim 5, characterized in that The cleaning part has an impact receiving part, and the impact receiving part is additionally provided on the scraper part. The striking portion of the hammer body strikes the impact receiving portion. The impact is transmitted to the scraper portion via the impact receiving portion.

7. The sheet manufacturing device according to claim 2, wherein: The cleaning unit has an action unit. The control unit controls the operation unit to switch between contact and separation of the first cleaning roller with respect to the process roller.

8. The sheet manufacturing device according to claim 7, characterized in that: The web is processed while the first cleaning roller is in contact with the processing roller. The control unit applies the impact from the hammer unit to the scraper unit while the first cleaning roller is spaced apart from the process roller.

9. The sheet manufacturing device according to claim 8, characterized in that: The control unit includes a sensor unit configured to detect an amount of paper dust attached to the second cleaning roller. When the amount of the paper dust reaches a predetermined value, the control unit separates the first cleaning roller from the process roller and applies the impact from the hammer unit to the scraper unit.

10. A cleaning device, characterized in that: have: A cleaning unit, which includes a cleaning roller unit, a scraper unit, and a hammer unit, and cleans the forming parts to which paper dust is attached; Control Department, The cleaning roller portion cleans the formed component. The scraper portion cleans the cleaning roller portion. The control unit operates the hammer unit to apply impact to the scraper unit.

Images