Sheet manufacturing apparatus and power switching apparatus

Abstract

The invention provides a sheet manufacturing device and a power switching device, which can restrain cost increase and is easy to miniaturize. A sheet manufacturing apparatus (1) includes: a processing roller (72); a first processing unit (231) that cleans the processing roller (72); a second processing unit (220) that isolates the first processing unit (231) from the processing roller (72); a drive unit (542) that drives the first processing unit (231) and the second processing unit (220); and a gear (G3) interposed between the drive unit (542) and the first processing unit (231) and the second processing unit (220), the gear (G3) having: an input gear (301) to which driving force can be input from the drive unit (542); an input shaft (303) that rotates in conjunction with the input gear (301); and a first gear (311) and a second gear (312) which, using the input shaft (303) as a rotation axis, output driving force in a first rotational direction from the input shaft (303) to the first processing unit (231) via the first gear (311), and output driving force in a second rotational direction from the input shaft (303) to the second processing unit (220) via the second gear (312).

Description

Technical Field

[0001] The present invention relates to a sheet manufacturing device and a power switching 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 rotating a felt roller for cleaning in a fiber structure manufacturing apparatus while contacting the calender roller.

[0003] However, in the device described in Patent Document 1, there is a problem that if a mechanism is provided to isolate the felt roller from the calender roller, it is difficult to suppress the cost increase due to the addition of a motor or the like to drive the mechanism. In addition, there is also a problem that the addition of a motor is likely to become an obstacle to the miniaturization of the device.

[0004] Specifically, if the felt roller is constantly in contact with the calender roller, the surface of the felt roller is easily worn and deformed. Therefore, it is desirable to provide a mechanism to isolate the felt roller from the calender roller. However, if the above mechanism is provided, in addition to the drive motor for rotating the felt roller, a motor for driving the above mechanism is also required. This arrangement will lead to an increase in cost and a larger device. That is, a sheet manufacturing device is required that has a mechanism to isolate the cleaning roller, suppresses cost increases, and is easily miniaturized.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2022-156155 Summary of the invention

[0006] The sheet manufacturing device is characterized in that it has: a processing roller that processes a sheet containing fibers; a first processing section that cleans by abutting against the processing roller; a second processing section that isolates the first processing section from the processing roller; a driving section that drives the first processing section and the second processing section; a power switching section that is interposed between the driving section and the first processing section, and between the driving section and the second processing section, the power switching section having: an input gear that can be input with a driving force in a first rotation direction and a driving force in a second rotation direction from the driving section; an input shaft that rotates in the first rotation direction and the second rotation direction in conjunction with the input gear; a first gear and a second gear that use the input shaft as a rotation axis, the driving force in the first rotation direction is output from the input shaft to the first processing section via the first gear, and the driving force in the second rotation direction is output from the input shaft to the second processing section via the second gear.

[0007] The power switching device is characterized in that it has: an input gear, which can be input with a driving force toward a first rotation direction and a driving force toward a second rotation direction; an input shaft, which rotates in the first rotation direction and the second rotation direction in conjunction with the input gear; a first gear and a second gear, the first gear and the second gear use the input shaft as a rotation axis, the first gear and the second gear have a one-way clutch, the one-way clutch of the first gear only transmits the driving force from the input shaft toward the first rotation direction, and the one-way clutch of the second gear only transmits the driving force from the input shaft toward the second rotation direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram showing the structure of a sheet manufacturing apparatus according to an embodiment.

[0009] Figure 2 It is a perspective view showing the arrangement of the shaping section and the cleaning section.

[0010] Figure 3 It is a perspective view showing the structure of the cleaning part of the first cleaning device.

[0011] Figure 4 It is a side view showing the structure of the cleaning part of the first cleaning device.

[0012] Figure 5 It is a perspective view showing the structure of the cleaning part of the second cleaning device.

[0013] Figure 6 It is a side view showing the structure of the cleaning part of the second cleaning device.

[0014] Figure 7 It is an enlarged side view showing the structure and arrangement of the fourth processing unit, etc.

[0015] Figure 8 It is a side view showing the structure of a gear train and the like of the second cleaning device.

[0016] Fig. 9 It is a perspective view showing the structure of the power switching unit.

[0017] Fig.10 It is a schematic side view showing a transmission path of driving force to the first processing unit and the like.

[0018] Fig.11 It is a schematic side view showing a transmission path of driving force to the second processing unit and the like.

[0019] Fig.12 It is a three-dimensional diagram showing the working principle of the striking action in the second cleaning device.

[0020] Fig.13 It is a schematic side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0021] Fig.14 It is a schematic side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0022] Fig.15 It is a schematic side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0023] Fig.16 It is a schematic side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0024] Fig.17 It is a schematic side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0025] Fig.18 It is a schematic side view showing the cleaning function performed by the cleaning portion of the second cleaning device.

[0026] Fig.19 It is a side view showing the posture of the cleaning part in the second cleaning device when it is isolated.

[0027] Fig. 20 It is a side view showing the posture of the cleaning part in 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, 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 1The 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 for processing. Therefore, the 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 while the web P3 is dirty with the paper dust and the like, the surface of the manufactured web P3 may be dirty or rough, or the web strength 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 first processing unit 131, a third processing unit 133, a scraper unit 141, a second processing 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 fourth processing unit 144 described later. Figure 3 In the figure, a driving unit 541 as an electric motor included in the control unit 5 is also shown.

[0086] The first processing section 131 cleans the processing roller 71. The third processing section 133 cleans the first processing section 131. The scraper section 141 cleans the third processing section 133.

[0087] The first treatment section 131 is a substantially cylindrical roller-shaped member, and the height direction of the cylinder is arranged along the X-axis. Both ends of the first treatment section 131 along the X-axis are supported on the support member 135, and the first treatment section 131 rotates around the rotation axis along the X-axis. The rotation of the first treatment section 131 is driven by the driving section 541.

[0088] The third treatment section 133 is a substantially cylindrical roller-shaped member, the height direction of the cylinder is along the X-axis, and is arranged in parallel with the first treatment section 131 in the direction along the Y-axis. Both ends of the third treatment section 133 along the X-axis are supported on the support member 135, and the third treatment section 133 rotates around the rotation axis along the X-axis. The rotation of the third treatment section 133 is also driven by the driving section 541.

[0089] The scraper portion 141 extends along the side surface of the third processing portion 133. The scraper portion 141 is supported by the support member 135. The scraper portion 141 is cleaned by the fourth processing portion 144 (not shown).

[0090] The second processing section 120 isolates the first processing section 131 from the processing roller 71. The second processing section 120 includes a shaft section 121, and cam members 123a and 123b. The shaft section 121 is a rod-shaped member arranged along the X axis. The cam member 123a is mounted near the end of the shaft section 121 in the +X direction, and the cam member 123b is mounted near the end of the shaft section 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 group 110 includes a plurality of gears (not shown). The plurality of gears rotate when driven by the driving unit 541, thereby rotating the shaft 121, the first treatment unit 131, and the third treatment unit 133. The gear group 110 and the driving unit 541 are provided at the end of the frame 115 in the -X direction.

[0093] The support member 135 includes a main body (not shown) along the XZ plane when viewed from above, and support parts 135a and 135b protruding from both ends of the main body along the X-axis in the +Y direction. The support parts 135a and 135b are opposed to each other in the direction along the X-axis. The second processing unit 120, the first processing unit 131, the third processing unit 133, and the scraper unit 141 are arranged between the support parts 135a and 135b. That is, the support parts 135a and 135b support the second processing unit 120, the first processing unit 131, the third processing unit 133, and the scraper unit 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 substantially 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 drive unit 541 is arranged on the inside, that is, in the +X direction. The drive unit 541 includes an output shaft. The output shaft extends through the frame portion 115 in the -X direction and is directly connected to one of the plurality of 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 apparatus 1.

[0096] The driving unit 541 controls the forward and reverse rotation directions through the control unit 5. Thus, the cleaning of the processing roller 71 by the first processing unit 131 and the contact and separation of the first processing unit 131 with respect to the processing roller 71 are switched. The contact and separation of the first processing unit 131 will be described later.

[0097] like Figure 4 As shown in FIG. 1 , in the cleaning section 41 , the first processing section 131 is located slightly above the processing roller 71 in the −Y direction and is arranged so as to abut against the processing roller 71 . Figure 4 FIG. 1 shows a state where the first processing unit 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.

[0098] As described above, the first processing unit 131 cleans the processing roller 71. The first processing unit 131 has a cleaning layer 131a at the outer periphery of the side surface. The cleaning layer 131a cleans the side surface of the processing roller 71 by contacting the side surface of the processing roller 71.

[0099] The cleaning layer 131 a cleans paper dust and the like adhering to the process roller 71 . Therefore, the cleaning capability of the first processing unit 131 for the process roller 71 can be improved.

[0100] The cleaning layer 131a 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 easily adapted to the shape of the side surface of the processing roller 71. Thus, the cleaning capability of the processing roller 71 implemented by the first processing unit 131 can be further enhanced.

[0101] The third treatment section 133 and the first treatment section 131 form a roller pair 130 to clean the first treatment section 131. In detail, the third treatment section 133 has a brush-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 treatment section 131 is arranged in a mutually overlapping manner with the surface layer 133a. Thus, the surface layer 133a cleans the first treatment section 131 in a manner of abutting against the cleaning layer 131a of the first treatment section 131.

[0102] The surface layer 133a cleans the paper dust and the like transferred from the process roller 71 to the first process section 131, thereby maintaining the cleanliness of the first process section 131. Therefore, the cleaning ability of the first process section 131 for the process roller 71 can be easily maintained continuously.

[0103] The processing roller 71, the first processing section 131, and the third processing section 133 rotate clockwise. In particular, the first processing section 131 rotates in the same direction, that is, clockwise, as the processing roller 71 and contacts each other, thereby cleaning the processing roller 71. Therefore, the processing roller 71 and the first processing section 131 slide their surfaces in opposite directions in the area where they contact each other. Therefore, paper dust and the like attached to the surface of the processing roller 71 are easily removed by being scraped off by the cleaning layer 131a of the first processing section 131. Thus, the cleaning ability of the first processing section 131 for the processing roller 71 can be further improved.

[0104] The scraper part 141 is arranged below the third processing part 133. The scraper part 141 is a substantially rectangular plate-shaped member, and its main surface is along the XZ plane. The scraper part 141 cleans the surface layer 133a of the third processing part 133 by contacting the surface layer 133a of the third processing part 133. In the direction along the X-axis, the length of the scraper part 141 is substantially equal to the length of the surface layer 133a of the third processing part 133.

[0105] The scraper part 141 is supported on the support part 135 via the fixing part 143, and is arranged so that the upper end is buried in the plurality of bristles of the surface layer 133a. The distance that the scraper part 141 is buried relative to the surface layer 133a is, for example, about 1 mm. The fourth processing part 144 is arranged in the approximate -Y direction of the scraper part 141.

[0106] The scraper 141 cleans the third processing section 133 from paper dust and the like transferred from the first processing section 131 to maintain cleanliness. Therefore, the first processing section 131 can easily maintain the cleaning performance of the processing roller 71 and the third processing section 133.

[0107] 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.

[0108] The support member 135 is urged in the counterclockwise direction about the rotation axis 137 by the spring member 151 . Therefore, the first treatment section 131 comes into contact with the treatment roller 71 by the urging force of the spring member 151 .

[0109] The second treatment section 120 is arranged in the -Y direction and faces the upper end of the support member 135 in the direction along the Y axis. The cam member 123a and the cam member 123b (not shown) are controlled by the control unit 5 to rotate, thereby switching the contact and separation of the first treatment section 131 with respect to the treatment roller 71.

[0110] Thus, the first processing section 131 can be appropriately isolated from the processing roller 71. Compared with the case where the first processing section 131 is always in contact with the processing roller 71, the occurrence of wear and deformation of the cleaning layer 131a can be suppressed in the first processing section 131. In addition, the processing of the web W described above is performed while the first processing section 131 is in contact with the processing roller 71.

[0111] The cam members 123a and 123b are asymmetrically shaped with respect to the shaft 121 serving as the rotation center and have protrusions (not shown). When the first processing unit 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.

[0112] When the first treatment section 131 is separated from the treatment 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 substantially +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 treatment section 131 is separated from the treatment roller 71.

[0113] The paper dust recovery unit 153 is disposed below the third processing unit 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 third processing unit 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.

[0114] like Figure 5 As shown, the cleaning unit 42 includes a first processing unit 231, a third processing unit 233, a scraper unit 241, a second processing 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 fourth processing unit 244 described later. Figure 5 In the figure, a driving unit 542 as an electric motor included in the control unit 5 is also shown.

[0115] The first processing section 231 cleans the processing roller 72. The third processing section 233 cleans the first processing section 231. The scraper section 241 cleans the third processing section 233.

[0116] The first treatment section 231 is a substantially cylindrical roller-shaped member, and the height direction of the cylinder is arranged along the X-axis. Both ends of the first treatment section 231 along the X-axis are supported on the support member 235, and the first treatment section 231 rotates around the rotation axis along the X-axis. The rotation of the first treatment section 231 is driven by the driving section 542.

[0117] The third processing section 233 is a substantially cylindrical roller-shaped member, the height direction of the cylinder is along the X-axis, and is arranged in parallel with the first processing section 231 in the direction along the Z-axis. Both ends of the third processing section 233 along the X-axis are supported on the support member 235, and the third processing section 233 rotates around the rotation axis along the X-axis. The rotation of the third processing section 233 is also driven by the driving section 542.

[0118] The scraper portion 241 extends along the side surface of the third processing portion 233. The scraper portion 241 is supported by the support member 235. The scraper portion 241 is cleaned by the fourth processing portion 244 (not shown).

[0119] The second processing section 220 isolates the first processing section 231 from the processing roller 72. The second processing section 220 includes a shaft section 221, and cam members 223a and 223b. The shaft section 221 is a rod-shaped member arranged along the X axis. The cam member 223a is mounted near the end of the shaft section 221 in the +X direction, and the cam member 223b is mounted near the end of the shaft section 221 in the -X direction.

[0120] 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.

[0121] The gear group 210 includes a plurality of gears (not shown). The plurality of gears rotate when driven by the driving unit 542, thereby rotating the shaft 221, the first treatment unit 231, and the third treatment unit 233. The gear group 210 and the driving unit 542 are provided at the end of the frame 215 in the -X direction.

[0122] The support member 235 includes a main body (not shown) along the XZ plane when viewed from above, and support parts 235a and 235b protruding upward from both ends of the main body along the direction of the X axis. The support parts 235a and 235b are opposed to each other in the direction along the X axis. The second processing unit 220, the first processing unit 231, the third processing unit 233, and the scraper unit 241 are arranged between the support parts 235a and 235b. That is, the support parts 235a and 235b support the second processing unit 220, the first processing unit 231, the third processing unit 233, and the scraper unit 241.

[0123] 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.

[0124] The frame portion 215 is a member that is substantially frame-shaped when viewed from above, and a support member 235 is disposed inside the frame portion 215. With respect to the end portion in the -X direction of the frame portion 215, the gear group 210 is disposed on the outside, that is, in the -X direction, and the drive unit 542 is disposed on the inside, that is, in the +X direction. The drive unit 542 includes an output shaft. The output shaft extends through the frame portion 215 in the -X direction and is directly connected to one of the plurality of 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 apparatus 1.

[0125] The driving unit 542 controls the forward and reverse rotation directions through the control unit 5. Thus, the cleaning of the processing roller 72 by the first processing unit 231 and the contact and isolation of the first processing unit 231 with respect to the processing roller 72 are switched. The details of the switching between cleaning and contact and isolation will be described later.

[0126] like Figure 6 As shown in FIG. 2 , in the cleaning section 42 , the first processing section 231 is located slightly below the processing roller 72 in the −Y direction and is arranged so as to abut against the processing roller 72 . Figure 6 FIG. 2 shows a state where the first processing unit 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] As described above, the first processing unit 231 cleans the processing roller 72. Specifically, the first processing unit 231 has a cleaning layer 231a at the outer periphery of the side surface. The cleaning layer 231a cleans the side surface of the processing roller 72 by contacting the side surface of the processing roller 72.

[0128] The cleaning layer 231 a cleans paper dust and the like adhering to the process roller 72 . Therefore, the cleaning capability of the first processing unit 231 for the process roller 72 can be improved.

[0129] The cleaning layer 231a is made of felt material. Therefore, paper dust and the like are easily entangled on 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 implemented by the first processing unit 231 can be further enhanced.

[0130] The third processing part 233 and the first processing part 231 form a roller pair 230 to clean the first processing part 231. In detail, the third processing part 233 has a brush-like surface layer 233a at the outer periphery of the side. In the surface layer 233a, a plurality of bristles are arranged roughly radially from the rotation center. The cleaning layer 231a of the first processing part 231 and the surface layer 233a are arranged in a mutually overlapping manner. Thus, the surface layer 233a cleans the first processing part 231 in a manner of abutting against the cleaning layer 231a of the first processing part 231.

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

[0132] The processing roller 72, the first processing section 231, and the third processing section 233 rotate counterclockwise. In particular, the first processing section 231 rotates in the same counterclockwise direction as the processing roller 72 and abuts against each other, thereby cleaning the processing roller 72. Therefore, the processing roller 72 and the first processing section 231 slide their surfaces in opposite directions in the area where they abut against each other. Therefore, paper dust and the like attached to the surface of the processing roller 72 become easy to be removed by being scraped away by the cleaning layer 231a of the first processing section 231. As a result, the cleaning ability of the first processing section 231 for the processing roller 72 will be further improved.

[0133] The scraper portion 241 is arranged below the third processing portion 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 third processing portion 233 by abutting against the surface layer 233a of the third processing portion 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 third processing portion 233. The fourth processing portion 244 is arranged in the substantially +Y direction of the scraper portion 241.

[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 scraper 241 cleans the paper dust and the like transferred from the first processing section 231 to maintain cleanliness in the third processing section 233. Therefore, the cleaning performance of the first processing section 231 and the third processing section 233 for the processing roller 72 can be easily maintained.

[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 axis 237 by the spring member 251 . Therefore, the first treatment section 231 comes into contact with the treatment roller 72 by the urging force of the spring member 251 .

[0138] The second processing unit 220 is arranged in the +Y direction and faces the lower end of the support member 235 in the direction along the Y axis. The cam member 223a and the cam member 223b (not shown) are controlled by the control unit 5 to rotate, thereby switching the contact and separation of the first processing unit 231 with respect to the processing roller 72.

[0139] Thus, the first processing section 231 can be appropriately isolated from the processing roller 72. Compared with the case where the first processing section 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 processing section 231. In addition, the processing of the web W described above is performed while the first processing section 231 is in contact with the processing roller 72.

[0140] The cam members 223a and 223b are asymmetrically shaped with respect to the shaft 221 serving as the rotation center and have protrusions (not shown). When the first processing unit 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 processing section 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, so that the first processing section 231 is separated from the processing roller 72.

[0142] The paper dust recovery section 253 is disposed below the third processing section 233 and the scraper section 241. The paper dust recovery section 253 is a box-shaped member with an open top, and mainly recovers and stores paper dust and the like dropped from the third processing section 233 and the scraper section 241. The paper dust and the like stored in the paper dust recovery section 253 can be removed by removing the paper dust recovery section 253 from the sheet manufacturing apparatus 1.

[0143] Reference Figure 7 , the structure of the fourth processing unit 244 provided in the cleaning unit 42 is described. In addition, although the cleaning unit 41 and the cleaning unit 42 are configured differently, the basic structure is the same. Therefore, the cleaning unit 42 is used as a representative example for description, and the description related to the fourth processing unit 144 of the cleaning unit 41 is omitted.

[0144] like Figure 7 As shown, the fourth processing part 244 of the cleaning part 42 has a shaft part 244a, an arm part 244b, a striking part 244c, and a spring part 244d. In addition, although the illustration is omitted, the fourth processing part 244 also has a rolling part and a rod part. The rolling part is one of the multiple gears of the gear set 210 mentioned above. Here, Figure 7 The fourth processing unit 244 is shown in a state where a striking operation described later is not being performed.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] The striking portion 244c is located at the upper end of the arm portion 244b and faces the -Y direction, and is configured to abut against the impact receiving portion 242. As the striking action of the fourth processing 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 fourth processing portion 244.

[0149] Thus, the impact of the blow 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 or the like attached to the scraper portion 241 from the scraper portion 241.

[0150] 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.

[0151] 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.

[0152] Reference Figures 8 to 12 , the structure and function of the gear set 210 and the like of the cleaning unit 42 will be described. Here, the structure and function of the gear set 110 and the like of the cleaning unit 41 are the same as those of the gear set 210. Therefore, the structure and function of the gear set 110 and the like of the cleaning unit 41 will be omitted. Figure 8 as well as Figures 10 to 12 In the description, unless otherwise specified, the description is given for the state of being viewed from the side in the -X direction.

[0153] like Figure 8 As shown, the gear set 210 includes gears G1, G2, G3, G4, G5, G6, G7, and gears G14, G15, G16, and G17 as the above-mentioned multiple gears. Gears G1 to G7, and gears G14 to G17 are arranged to mesh with each other in the above-mentioned order. Gear G1 is directly connected to the output shaft of the driving unit 542. Each gear of the gear set 210 rotates along the rotation axis of the X-axis.

[0154] The driving unit 542 rotates in a clockwise direction as a positive rotation and in a counterclockwise direction as a reverse rotation under the control of the above-mentioned control unit 5. The rotational driving force of the driving unit 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 above-mentioned rotational driving force is transmitted from the gear G2 to the gear G3, and further transmitted from the gear G3 to the gear G4, the gear G5, the gear G6, and the gear G7 in sequence. In addition, the above-mentioned rotational driving force is also transmitted from the gear G3 to the gears G14, the gear G15, the gears G16, and 17 in sequence.

[0155] Although not shown in the figure, the end portion of the first processing unit 231 in the -X direction is fixed to the gear G16, and the end portion of the third processing unit 233 in the -X direction is fixed to the gear G17.

[0156] The gear G3 is an example of a power switching unit and a power switching device of the present invention. The gear G3 is interposed between the driving unit 542 and the first processing unit 231. In addition, the gear G3 is also interposed between the driving unit 542 and the second processing unit 220 (not shown).

[0157] The rod 244e of the fourth treatment section 244 is arranged corresponding to the gear G5 as the winding section. 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] like Fig. 9 As shown, the gear G3 includes an input gear 301, a first gear 311, a second gear 312, and an input shaft 303. The input gear 301, the first gear 311, and the second gear 312 rotate with the input shaft 303 as a rotation axis. The rotation axis is along the X axis. The input gear 301, the first gear 311, and the second gear 312 are arranged in the order of the first gear 311, the input gear 301, and the second gear 312 toward the +X direction.

[0159] The base circle diameter of the input gear 301 is larger than the base circle diameters of the first gear 311 and the second gear 312. In addition, the base circle diameter of the first gear 311 and the base circle diameter of the second gear 312 may be equal to or different from each other. The base circle diameter of the input gear 301 is larger than the base circle diameters of the first gear 311 and the second gear 312.

[0160] The input gear 301 can receive driving force in the first rotation direction and driving force in the second rotation direction from the drive unit 542 via the gears G1 and G2. The first rotation direction is clockwise and the second rotation direction is counterclockwise when viewed from the side in the -X direction.

[0161] The input shaft 303 is directly connected to the input gear 301. Therefore, when the input gear 301 is driven by the driving unit 542 to rotate in the first rotation direction and the second rotation direction, the input shaft 303 rotates in the first rotation direction and the second rotation direction in conjunction with the input gear 301.

[0162] The first gear 311 and the second gear 312 include a one-way clutch. Therefore, the first gear 311 and the second gear 312 are selectively driven or stopped according to the rotation direction of the input shaft 303 .

[0163] Specifically, the one-way clutch of the first gear 311 is driven only by the rotation of the input shaft 303 in the first rotation direction, so that the first gear 311 rotates in the first rotation direction. In addition, the one-way clutch of the second gear 312 is driven only by the rotation of the input shaft 303 in the second rotation direction, so that the second gear 312 rotates in the second rotation direction. Thus, according to the rotation direction of the driving unit 542, the driving force of the driving unit 542 is selectively distributed by the gear G3.

[0164] The one-way clutch of the first gear 311 and the second gear 312 can adopt a known technique such as a cam type or a sprag type. In the present embodiment, a planetary gear type one-way clutch is used as the one-way clutch.

[0165] like Fig.10 As shown in FIG. 1 , when the driving unit 542 rotates forward, the gear G1 also rotates clockwise. The driving force of the rotation of the gear G1 causes the gear G2 to rotate counterclockwise via the gear G2a. Fig.10 as well as Fig.11 In the figure, for the convenience of explanation, the configuration of each gear of the gear set 210 along the direction of the X-axis is different from the actual situation.

[0166] The driving force of the rotation of the gear G2 is transmitted from the gear G2b to the input gear 301 of the gear G3, so that the input gear 301 rotates in the clockwise direction as the first rotation direction. As a result, the input shaft 303 (not shown) also rotates in the first rotation direction. The driving force of the rotation of the input shaft 303 in the first rotation direction rotates only the first gear 311 in the first rotation direction.

[0167] Thus, the one-way clutch of the first gear 311 transmits only the driving force of the input shaft 303 rotating in the first rotation direction to the first treatment section 231 and the third treatment section 233. In addition, since the input shaft 303 rotates in the first rotation direction, the second gear 312 (not shown) is in a free state and is not driven.

[0168] The gear G14 is arranged corresponding to the first gear 311. The rotational driving force of the first gear 311 is transmitted to the gear G14, so that the gear G14 rotates counterclockwise. The rotational driving force of the gear G14 is transmitted to the gear G15a of the gear G15, so that the gear G15 rotates clockwise. The rotational driving force of the gear G15 is transmitted from the gear G15b to the gears G16 and G17.

[0169] As described above, the driving force in the first rotation direction inputted from the driving unit 542 to the input shaft 303 is outputted from the input shaft 303 to the first treatment unit 231 and the third treatment unit 233 via the first gear 311. Thus, the first treatment unit 231 and the third treatment unit 233 rotate counterclockwise.

[0170] like Fig.11 As shown in FIG. 1 , when the driving unit 542 rotates in the reverse direction, the gear G1 also rotates counterclockwise. The driving force of the rotation of the gear G1 causes the gear G2 to rotate clockwise via the gear G2a.

[0171] The driving force of the rotation of the gear G2 is transmitted from the gear G2b to the input gear 301 of the gear G3, so that the input gear 301 rotates in the counterclockwise direction as the second rotation direction. As a result, the input shaft 303 (not shown) also rotates in the second rotation direction. The driving force of the rotation of the input shaft 303 in the second rotation direction rotates only the second gear 312.

[0172] Thus, the one-way clutch of the second gear 312 transmits only the driving force of the input shaft 303 rotating in the second rotation direction to the second treatment section 220 and the fourth treatment section 244. In addition, since the input shaft 303 rotates in the second rotation direction, the first gear 311 (not shown) is in a free state and is not driven.

[0173] The gear G4 is arranged corresponding to the second gear 312. The driving force of the rotation of the second gear 312 is transmitted to the gear G4, so that the gear G4 rotates clockwise. The driving force of the rotation of the gear G4 is transmitted to the gear G5, so that the gear G5 rotates counterclockwise. The driving force of the rotation of the gear G5 causes the fourth processing unit 244 to operate via the rod 244e. The striking action achieved by the operation of the fourth processing unit 244 will be described later.

[0174] The driving force of the rotation of the gear G5 is transmitted to the gear G6, so that the gear G6 rotates clockwise, and the driving force of the rotation of the gear G6 is transmitted to the gear G7, so that the gear G7 rotates counterclockwise.

[0175] In the above manner, the driving force of the rotation in the second rotation direction input from the driving unit 542 to the input shaft 303 is output from the input shaft 303 to the second treatment unit 220 and the fourth treatment unit 244 via the second gear 312. The driving force of the rotation transmitted to the gear G7 rotates the shaft 221 and the cam members 223a and 223b of the second treatment unit 220 counterclockwise. The operation of the second treatment unit 220 will be described later.

[0176] like Fig.12 As shown, 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.

[0177] When viewed from above, the convex portion G5a is located at a position where it intersects and contacts the top end of the rod portion 244e when the gear G5 rotates. When the gear G5 rotates counterclockwise, the top end of the rod portion 244e contacts and straddles the convex portion G5a. As a result, the rod portion 244e is urged clockwise, so that a rotational force in the clockwise direction acts on the shaft portion 244a. In other words, the gear G5 applies a compressive force to the spring portion 244d via the rod portion 244e.

[0178] 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 .

[0179] Although not shown in the figure, when the gear G5 further rotates counterclockwise, the convex portion G5a will be separated from the top end 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. 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 resilience 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 exert an impact on the scraper portion 241. The above is the principle of the striking action achieved by the fourth processing portion 244.

[0180] Reference Figures 13 to 18 , 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 13 to 18In the description, unless otherwise specified, the description is given for the state of being viewed from the side in the -X direction.

[0181] like Fig.13 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 .

[0182] The cleaning layer 231a of the first processing section 231 abuts against the side surface of the processing roller 72. While the first processing section 231 abuts against the processing roller 72, the processing roller 72, the first processing section 231, and the third processing section 233 rotate counterclockwise. At this time, the cleaning layer 231a of the first processing section 231 is pressed against the side surface of the processing roller 72 due to the force of the spring member 251.

[0183] Next, if Fig.14 As shown in FIG. 1 , the paper dust D attached to the side surface of the processing roller 72 reaches the area where the processing roller 72 contacts the cleaning layer 231a due to the rotation of the processing roller 72. Then, the first processing unit 231 contacts the processing roller 72 while rotating, thereby cleaning the side surface of the processing roller 72. That is, the paper dust D attached to the side surface of the processing roller 72 is transferred to the first processing unit 231 in a manner of being entangled with the cleaning layer 231a.

[0184] Next, if Fig.15 As shown, the paper dust D transferred to the cleaning layer 231a is transferred to the third processing part 233 by being entangled with the bristle material of the surface layer 233a of the third processing part 233. Thus, the cleaning layer 231a of the first processing part 231 can be cleaned, so that the cleaning ability of the first processing part 231 can be maintained.

[0185] Next, if Fig.16 As shown, the paper dust D transferred to the surface layer 233a of the third processing section 233 is scraped away by the scraper section 241 by the rotation of the third processing section 233. Thus, the surface layer 233a of the third processing section 233 can be cleaned, so that the cleaning ability of the third processing section 233 for the first processing section 231 can be maintained.

[0186] Here, when the amount of paper dust D attached to the scraper portion 241 increases, the cleaning ability of the third processing portion 233 achieved by the scraper portion 241 is reduced, and the cleaning ability of the first processing portion 231 is also reduced due to the third processing portion 233, which may cause the cleanliness of the processing roller 72 to decrease. In response to this, the impact of the above-mentioned striking action is used to remove the paper dust D attached to the scraper portion 241, so that the cleaning ability of the scraper portion 241 is restored, and further the cleaning ability of the third processing portion 233 is also restored.

[0187] That is, Fig.17 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.18 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).

[0188] 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.

[0189] Although in Fig.17 as well as Fig.18 In the embodiment, the striking action of the fourth processing unit 244 is performed when the processing roller 72 is in contact with the first processing unit 231, but the present invention is not limited thereto. Preferably, the control unit 5 applies the impact from the fourth processing unit 244 to the scraper unit 241 while the first processing unit 231 is isolated from the processing roller 72.

[0190] Reference Fig.19 as well as Fig. 20 , the functions of the second processing units 120 and 220 are described. Fig.19 as well as Fig. 20 In the description, unless otherwise specified, the description is given for the state of being viewed from the side in the -X direction.

[0191] In order to separate the first processing unit 231 from the processing roller 72, the second processing unit 220 is operated. Figure 6 From the state, such as Fig.19 As shown in FIG. 1 , the posture of the support member 235 is changed by the second treatment 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.

[0192] 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 processing unit 231 is separated from the processing roller 72.

[0193] Thus, while the web W is being processed, no impact is applied from the fourth processing unit 244 to the scraper unit 241. Therefore, the impact applied by the fourth processing unit 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 decreasing.

[0194] In the cleaning section 41 , for the same reason, it is preferable that an impact is applied from the fourth processing section 144 to the scraper section 141 while the first processing section 131 is spaced apart from the processing roller 71 .

[0195] In order to separate the first processing unit 131 from the processing roller 71, the second processing unit 120 is operated. Figure 4 From the state, such as Fig. 20 As shown in FIG. 1 , the posture of the support member 135 is changed by the second treatment 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.

[0196] 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 processing unit 131 is separated from the processing roller 71.

[0197] According to this embodiment, the following effects can be obtained.

[0198] The second processing section 220 is provided to isolate the first processing section 231 from the processing roller 72, and the cost increase can be suppressed, and the miniaturization is easy. In detail, by rotating the driving section 542 forward and reversely, the driving force of the driving section 542 is distributed to the first processing section 231 and the second processing section 220 by using the gear G3 as a power switching section. Therefore, the cleaning of the processing roller 72 and the isolation operation of the first processing section 231 relative to the processing roller 72 can be driven by a single driving section 542.

[0199] In addition, in the same manner as described above, the second processing section 120 is provided to isolate the first processing section 131 from the processing roller 71, and the cost increase can be suppressed, and miniaturization is easy. In detail, by rotating the driving section 541 forward and reversely, the driving force of the driving section 541 is distributed to the first processing section 131 and the second processing section 120 by using the gear G3 as a power switching section. Therefore, the cleaning of the processing roller 71 and the isolation operation of the first processing section 131 relative to the processing roller 71 can be driven by a single driving section 541.

[0200] According to the above aspect, it is possible to provide the sheet manufacturing apparatus 1 which includes the second processing units 120 and 220 and can be easily miniaturized while suppressing cost increase.

[0201] The driving force is selectively transmitted to the first gear 311 and the second gear 312 according to the rotation direction of the driving force input to the input gear 301. That is, by rotating the output shaft of the driving force source forward and reversely, one of the first gear 311 and the second gear 312 can be driven. Therefore, there is no need to add a driving force source, so that the cost increase can be suppressed and the miniaturization of the device using the power switching device can be easily achieved. Therefore, it is possible to provide a power switching device that helps miniaturization while suppressing the cost increase.

[0202] Explanation of symbols

[0203] 1…sheet manufacturing device; 5…control unit; 71, 72…processing rollers; 120, 220…second processing unit; 131, 231…first processing unit; 133, 233…third processing unit; 141, 241…scraper unit; 144, 244…fourth processing unit; 301…input gear; 303…input shaft; 311…first gear; 312…second gear; 541, 542…driving unit; G3…gear serving as a power switching unit or a power switching device; W…sheet.

Claims

1. A sheet manufacturing device, characterized in that: have: a processing roller that processes the web containing the fibers; a first processing section that performs cleaning by abutting against the processing roller; a second processing section isolating the first processing section from the processing roller; a driving unit configured to drive the first processing unit and the second processing unit; a power switching unit, which is interposed between the driving unit and the first processing unit, and between the driving unit and the second processing unit, The power switching unit has: an input gear to which a driving force in a first rotation direction and a driving force in a second rotation direction can be input from the driving unit; an input shaft, which rotates in the first rotation direction and the second rotation direction in conjunction with the input gear; A first gear and a second gear, wherein the first gear and the second gear use the input shaft as a rotation axis, The driving force in the first rotation direction is output from the input shaft to the first processing unit via the first gear. The driving force in the second rotation direction is output from the input shaft to the second processing unit via the second gear.

2. The sheet manufacturing device according to claim 1, wherein: A control unit is provided to control the rotation direction of the driving unit.

3. The sheet manufacturing device according to claim 1, wherein: The first gear and the second gear are provided with a one-way clutch. The one-way clutch of the first gear transmits only the driving force from the input shaft in the first rotation direction to the first processing unit. The one-way clutch of the second gear transmits only the driving force in the second rotation direction from the input shaft to the second processing unit.

4. The sheet manufacturing device according to claim 1, wherein: A third processing unit is provided, and the third processing unit cleans the first processing unit. The driving force in the first rotation direction is output from the input shaft via the first gear and also to the third processing unit.

5. The sheet manufacturing device according to claim 4, characterized in that: have: a scraper portion for cleaning the third processing portion; a fourth processing unit, which cleans the scraper unit, The driving force in the second rotation direction is output from the input shaft via the second gear and also to the fourth processing unit.

6. The sheet manufacturing device according to claim 1, wherein: The first processing section contacts the processing roller while rotating in the same direction as the processing roller to clean the processing roller.

7. A power switching device, characterized in that: have: an input gear to which a driving force in a first rotation direction and a driving force in a second rotation direction can be input; an input shaft, which rotates in the first rotation direction and the second rotation direction in conjunction with the input gear; A first gear and a second gear, wherein the first gear and the second gear use the input shaft as a rotation axis, The first gear and the second gear are provided with a one-way clutch. The one-way clutch of the first gear transmits only the driving force from the input shaft in the first rotation direction. The one-way clutch of the second gear transmits only the driving force from the input shaft in the second rotation direction.

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