JP2019081637A - Sheet feeder and used paper recycling apparatus - Google Patents

Abstract

To provide a sheet feeder capable of smoothly feeding a sheet regardless of a size and a kind of the sheet, and a used paper recycling apparatus.SOLUTION: A sheet feeder comprises: a stacking part capable of stacking a plurality of sheets of different sizes or kinds in piles; and a conveyance part which discharges the sheets stacked on the stacking part from the stacking part one by one to convey. The conveyance part includes: a belt arranged to face the sheet stacked on the stacking part; a drive part for driving the belt; and at least one suction part for sucking the sheet to the belt.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a sheet feeding apparatus and a used paper recycling apparatus.

  2. Description of the Related Art Conventionally, an image forming apparatus such as a copying machine, a printing machine or the like which is used by supplying paper is known. Some of these image forming apparatuses are provided with a sheet feeding device capable of feeding both a folded sheet and an unfolded sheet (see, for example, Patent Document 1).

  The paper feeding device described in Patent Document 1 includes a pressing roller that moves in contact with the paper or moves away from the paper depending on whether the paper is folded or not.

Unexamined-Japanese-Patent No. 2003-12169

  However, in the sheet feeding device described in Patent Document 1, since the transfer roller is movable depending on whether or not the paper is folded, the transfer roller may be caught on the paper when moving. There is a risk of jamming in the paper device.

  An object of the present invention is to provide a sheet feeding apparatus and a used paper recycling apparatus capable of smoothly feeding sheets regardless of the size and type of the sheet.

  The present invention has been made to solve at least a part of the above-mentioned problems, and can be realized as the following.

The sheet feeding apparatus according to the present invention is a stacker capable of stacking a plurality of sheets of different sizes or types.
And a conveyance unit that discharges and conveys the sheets accumulated in the accumulation unit one by one from the accumulation unit,
The transport unit is a belt disposed to face the sheets accumulated in the accumulation unit;
A drive unit for driving the belt;
The belt is characterized by having at least one suction unit for suctioning the sheet.

  Thus, it is possible to adjust (change) the suction state of the sheet on the belt in accordance with the size and type of the sheet. Then, if the sheet is conveyed in this adjusted suction state, the sheet can be smoothly supplied regardless of the size and type of the sheet.

In the sheet feeding apparatus according to the present invention, the driving unit includes a driving roller and a driven roller disposed apart from the driving roller.
The belt is an air-permeable endless belt which is wound around the drive roller and the driven roller.
Preferably, the suction unit is disposed inside the endless belt and has a suction port for suctioning the sheet with air, and the suction force generated at the suction port causes the sheet to be sucked to the outside of the endless belt. .

  Thus, when the driving unit is operated in a state where the sheet is adsorbed to the belt, the belt can be rotated to convey the sheet.

  In the sheet feeding apparatus according to the present invention, it is preferable that a plurality of the suction units are arranged along the sheet conveying direction.

  This allows the sheet to be attracted to the belt regardless of the size and type of the sheet.

  In the sheet feeding apparatus according to the present invention, when the sheet is adsorbed to the belt by the adsorption unit, the sheet is positioned at the uppermost portion of the sheet adsorbed by the belt and the sheets accumulated in the accumulation unit. Preferably, a detection unit for detecting the presence or absence of the sheet between the sheet and the sheet is provided.

  Thereby, based on the detection result of a detection part, the action | operation timing of each adsorption | suction part can be switched, for example.

In the sheet feeding apparatus of the present invention, a plurality of the suction units are arranged along the sheet conveying direction,
It is preferable to include a control unit that switches the operation timing of each suction unit based on the detection result of the detection unit.

  As a result, it is possible to operate each suction unit or to stop the operation according to the size and type of the sheet, thereby contributing to the suction of various sheets.

In the sheet feeding apparatus of the present invention, a plurality of the suction units are arranged along the sheet conveying direction,
When the control unit operates the suction units collectively and the detection unit detects the sheet, the control unit maintains the operation of the suction unit on the downstream side in the conveyance direction of the sheet. It is preferable to stop the operation of the suction unit on the upstream side in the transport direction.

  As a result, for example, even when a portion (sagging) not adsorbed to the belt occurs in the sheet adsorbed to the belt, the sheet can be smoothly supplied.

  In the sheet feeding apparatus according to the present invention, the conveyance unit stops the operation of the suction unit on the upstream side in the conveyance direction while maintaining the operation of the suction unit on the downstream side of the sheet in the conveyance direction. It is preferable to convey the sheet.

  As a result, for example, even when a portion (sagging) not adsorbed to the belt occurs in the sheet adsorbed to the belt, the sheet can be smoothly supplied.

  In the sheet feeding apparatus according to the present invention, it is preferable that the sheet feeding device further includes an adjusting unit that adjusts a separation distance between the sheet positioned at the top of the sheets stacked in the stacking unit and the belt.

  Thus, the sheet can be positioned at a position where the sheet located at the top can be attracted to the belt. Then, by operating the suction unit in this state, the sheet positioned at the top can be suctioned accurately.

  A waste paper recycling apparatus according to the present invention includes the sheet feeding apparatus according to the present invention, which is used for feeding used waste paper.

  Thus, it is possible to adjust (change) the suction state of the sheet on the belt in accordance with the size and type of the sheet. Then, if the sheet is conveyed in this adjusted suction state, the sheet can be smoothly supplied regardless of the size and type of the sheet. In addition, paper can be recycled from the supplied sheet (waste paper).

FIG. 1 is a schematic side view showing the configuration of the used paper recycling apparatus (first embodiment) of the present invention. FIG. 2 is a schematic side view sequentially showing the operating state (first pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 3 is a schematic side view sequentially showing the operating state (first pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 4 is a schematic side view sequentially showing the operating state (first pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 5 is a schematic side view sequentially illustrating the operating state (first pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 6 is a schematic side view sequentially illustrating the operating state (second pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 7 is a schematic side view sequentially illustrating the operating state (second pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 8 is a schematic side view sequentially illustrating the operating state (second pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 9 is a schematic side view sequentially illustrating the operating state (second pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 10 is a schematic side view sequentially showing the operating state (third pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 11 is a schematic side view sequentially illustrating the operating state (third pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 12 is a schematic side view sequentially illustrating the operating state (third pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 13 is a schematic side view sequentially illustrating the operating state (third pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 14 is a block diagram of the main parts of the used paper recycling apparatus shown in FIG. FIG. 15 is a schematic side view sequentially showing the operating state of the sheet feeding device provided in the used paper recycling apparatus (second embodiment) of the present invention. FIG. 16 is a schematic side view sequentially illustrating the operating state of the sheet feeding device provided in the used paper recycling apparatus (second embodiment) of the present invention. FIG. 17 is a view (plan view) viewed from the direction of arrow A in FIG.

  Hereinafter, a sheet feeding apparatus and a used paper recycling apparatus of the present invention will be described in detail based on preferred embodiments shown in the attached drawings.

First Embodiment
FIG. 1 is a schematic side view showing the configuration of the used paper recycling apparatus (first embodiment) of the present invention. 2 to 5 are schematic side views sequentially showing the operating state (first pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. 6 to 9 are schematic side views sequentially showing the operating state (second pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. 10 to 13 are schematic side views sequentially showing the operating state (third pattern) of the sheet feeding device provided in the used paper recycling apparatus shown in FIG. FIG. 14 is a block diagram of the main parts of the used paper recycling apparatus shown in FIG. In the following, for convenience of explanation, as shown in FIG. 1, three axes orthogonal to each other are taken as an x-axis, a y-axis and a z-axis. Further, the xy plane including the x axis and the y axis is horizontal, and the z axis is vertical. Also, the direction in which the arrows of each axis point is referred to as "positive", and the opposite direction is referred to as "negative". Moreover, the upper side in FIGS. 1 to 13 (the same applies to FIGS. 15 to 17) may be referred to as "upper" or "upper", and the lower side as "lower" or "lower".

  The sheet feeding apparatus 1 according to the present invention includes an accumulation unit 3 capable of accumulating a plurality of raw materials M1 (sheets) different in size or type and accumulating the raw materials M1 (sheets) accumulated in the accumulation unit 3 one by one And a transport unit 4 that discharges and transports from 3. The transport unit 4 includes a belt 41 disposed to face the raw material M1 (sheet) accumulated in the accumulation unit 3, a drive unit 42 for driving the belt 41, and at least allowing the belt 41 to adsorb the raw material M1 (sheet). It has one (two in the present embodiment) suction parts 43.

  Thereby, as described later, according to the size (for example, a postcard size, A4 size, A3 size, etc.) and type (for example, a postcard, PPC paper, etc.) of the raw material M1, The adsorption state of can be adjusted (changed). And if the raw material M1 is conveyed in this adjusted adsorption | suction state, the raw material M1 can be smoothly supplied irrespective of the magnitude | size and kind of the raw material M1.

  The used paper recycling apparatus (sheet manufacturing apparatus) 100 of the present invention is provided with a sheet feeding apparatus 1. The sheet feeding device 1 is used to feed a used waste material, which is used paper, downstream of the sheet feeding device 1.

  Thereby, the sheet S (paper) can be regenerated (manufactured) from used paper (raw material M1) while enjoying the advantages of the sheet feeding device 1 described above.

  As shown in FIG. 1, the used paper recycling apparatus 100 mixes the raw material supply unit 11, the crushing unit 12, the defibrating unit 13, the sorting unit 14, the first web forming unit 15, and the subdivision unit 16. A part 17, a loosening part 18, a second web forming part 19, a sheet forming part 20, a cutting part 21, a stock part 22 and a collecting part 27 are provided. In the present embodiment, the raw material supply unit 11 is configured by the sheet supply device 1. In addition, the used paper recycling apparatus 100 includes a humidifying unit 231, a humidifying unit 232, a humidifying unit 233, a humidifying unit 234, a humidifying unit 235, and a humidifying unit 236. In addition, the used paper recycling apparatus 100 includes a blower 261, a blower 262, and a blower 263.

  Further, as shown in FIG. 14, each unit (for example, the drive unit 42 and the suction unit 43 of the transport unit 4, the detection unit 5, and the elevation mechanism 62 of the adjustment unit 6) included in the used paper recycling apparatus 100 (sheet feeding apparatus 1). Are electrically connected to the control unit 28. The operation of these units is controlled by the control unit 28. The control unit 28 includes a central processing unit (CPU) 281 and a storage unit 282. The CPU 281 can perform, for example, various determinations, various instructions, and the like. The storage unit 282 stores, for example, various programs such as a program until manufacturing the sheet S. The control unit 28 may be built in the used paper recycling apparatus 100 or may be provided in an external device such as an external computer. Also, when communicating with the used paper recycling apparatus 100 via a cable or the like, the external device may be connected to the used paper recycling apparatus 100 via a network (for example, the Internet) when performing wireless communication. . The CPU 281 and the storage unit 282 may be integrated, for example, and configured as one unit, or the CPU 281 is incorporated in the used paper recycling apparatus 100, and the storage unit 282 is an external device such as an external computer. The storage unit 282 may be built in the used paper recycling apparatus 100, and the CPU 281 may be installed in an external device such as an external computer.

  In the waste paper recycling apparatus 100, the raw material supply process, the coarse crushing process, the fibrillation process, the sorting process, the first web forming process, the dividing process, the mixing process, the loosening process, and the second web formation A process, a sheet formation process, and a cutting process are performed in this order.

The configuration of each part will be described below.
The raw material supply unit 11 is a part that performs a raw material supply process of supplying the raw material M1 (sheet) to the crushing unit 12. The raw material M1 is a sheet-like material containing fibers (cellulose fibers). In addition, what is necessary is just what makes cellulose (cellulose in a narrow sense) as a main component and makes a fibrous form with a compound as a cellulose fiber, and also contains hemicellulose and lignin besides cellulose (cellulose in a narrow sense) Good. Moreover, the raw material M1 does not ask | require a form, such as a woven fabric and a nonwoven fabric. Also, the raw material M1 may be, for example, recycled paper (regenerated) manufactured by disaggregating waste paper, Yupo paper (registered trademark) of synthetic paper, or may not be recycled paper. Moreover, in the present embodiment, the raw material M1 is used waste paper.

  The crushing unit 12 is a part that performs a crushing process of crushing the raw material M1 supplied from the raw material supply unit 11 in the air (in the air) or the like. The crushing unit 12 has a pair of crushing blades 121 and a chute (hopper) 122.

  The pair of coarse crushing blades 121 can rotate the raw material M1 between them in a direction opposite to each other to coarsen, that is, cut the raw material M1 into coarse pieces M2. The shape and size of the coarse fragments M2 are preferably suitable for the defibrating treatment in the defibrating unit 13. For example, the length of one side is preferably a small piece of 100 mm or less, and a small piece of 10 mm to 70 mm Is more preferred.

  The chute 122 is disposed below the pair of crushing blades 121 and has, for example, a funnel shape. Thus, the chute 122 can receive the coarse fragments M2 that have been crushed and dropped by the crushing blade 121.

  Further, above the chute 122, the humidifying unit 231 is disposed adjacent to the pair of coarse crushing blades 121. The humidifying unit 231 humidifies the coarse fragments M2 in the chute 122. The humidifying unit 231 has a filter (not shown) containing water, and by passing air through the filter, a vaporization type (or hot air vaporization type) that supplies humidified air with increased humidity to the coarse debris M2 It consists of a humidifier. By supplying the humidified air to the coarse fragments M2, the coarse fragments M2 can be prevented from adhering to the chute 122 etc. by static electricity.

  The chute 122 is connected to the defibrating unit 13 via a pipe (flow path) 241. The coarse fragments M2 collected in the chute 122 pass through the pipe 241 and are transported to the defibrating unit 13.

  The defibration unit 13 is a portion that performs a defibration step of disaggregating the coarse fragments M2 in the air, that is, in a dry manner. By the defibrating process in the defibrating unit 13, the defibrated product M3 can be generated from the coarse fragments M2. Here, "disintegrate" refers to loosening the coarse fragments M2 formed by binding a plurality of fibers into one fiber. And this disentangled thing becomes disentangled material M3. The shape of the defibrated material M3 is linear or band-like. In addition, the defibrated materials M3 may be present in a state of being entangled and in a lump, that is, in a state of forming a so-called "dama".

  For example, in the present embodiment, the defibrating unit 13 is an impeller mill having a rotor rotating at high speed and a liner located on the outer periphery of the rotor. The coarse fragments M2 flowing into the defibrating unit 13 are defibrated by being sandwiched between the rotor and the liner.

  Further, the defibrating unit 13 can generate a flow (air flow) of air from the coarse crushing unit 12 to the sorting unit 14 by the rotation of the rotor. Thereby, the coarse fragments M2 can be sucked from the pipe 241 to the defibrating unit 13. In addition, after the defibration treatment, the defibrated material M3 can be sent out to the sorting unit 14 through the pipe 242.

  In the middle of the pipe 242, a blower 261 is installed. The blower 261 is an air flow generating device that generates an air flow toward the sorting unit 14. Thus, the delivery of the defibrated material M3 to the sorting unit 14 is promoted.

  The sorting unit 14 is a part that performs a sorting step of sorting the defibrated material M3 according to the length of the fiber. In the sorting unit 14, the defibrated material M3 is sorted into the first sorted material M4-1 and the second sorted material M4-2 larger than the first sorted material M4-1. The first sorted product M4-1 has a size suitable for the subsequent production of the sheet S. The average length is preferably 1 μm to 30 μm. On the other hand, the second sorted product M4-2 includes, for example, those having insufficient defibration and those in which the defibrated fibers are excessively aggregated.

  The sorting unit 14 has a drum unit 141 and a housing unit 142 for housing the drum unit 141.

The drum unit 141 is a screen formed in a cylindrical shape and is a sieve that rotates around its central axis. The defibrated material M3 flows into the drum portion 141. And, by rotation of the drum portion 141, the defibrated material M3 smaller than the mesh size of the mesh is selected as the first sorted material M4-1, and the defibrillated material M3 having a size larger than the mesh size is The second sorted product M4-2 is sorted.
The first sorted matter M4-1 falls from the drum unit 141.

  On the other hand, the second sorted matter M4-2 is sent out to a pipe (flow path) 243 connected to the drum portion 141. The pipe 243 is connected to the pipe 241 at the opposite side (downstream side) to the drum portion 141. The second sorted product M4-2 which has passed through the pipe 243 joins the coarse fragments M2 in the pipe 241 and flows into the defibrating unit 13 together with the coarse fragments M2. As a result, the second sorted product M4-2 is returned to the defibrating unit 13 and disintegrated with the coarse fragments M2.

  In addition, the first sorted matter M4-1 from the drum unit 141 drops while dispersing in air and travels to the first web forming unit (separation unit) 15 located below the drum unit 141. The 1st web formation part 15 is a portion which performs the 1st web formation process which forms the 1st web M5 from the 1st sorting thing M4-1. The first web forming unit 15 has a mesh belt (separation belt) 151, three stretching rollers 152, and a suction unit (suction mechanism) 153.

  The mesh belt 151 is an endless belt, on which the first sorted matter M4-1 is deposited. The mesh belt 151 is wound around three tension rollers 152. Then, by the rotational driving of the tension roller 152, the first sorted material M4-1 on the mesh belt 151 is conveyed to the downstream side.

  The first sorted matter M4-1 has a size equal to or larger than the opening of the mesh belt 151. Thereby, the passage of the mesh belt 151 is restricted, and therefore, the first sorted matter M4-1 can be deposited on the mesh belt 151. In addition, since the first sorted matter M4-1 is transported to the downstream side together with the mesh belt 151 while being deposited on the mesh belt 151, it is formed as a layered first web M5.

  Moreover, there is a possibility that dust, dirt, etc. may be mixed in the first sorted matter M4-1, for example. Dust and dirt may be generated, for example, by crushing or disintegration. And such dust and dirt will be collected by collection part 27 mentioned below.

  The suction unit 153 can suction air from below the mesh belt 151. Thus, dust and dirt that has passed through the mesh belt 151 can be suctioned together with air.

  In addition, the suction unit 153 is connected to the collection unit 27 via a pipe (flow passage) 244. The dust and dirt sucked by the suction unit 153 are collected by the collection unit 27.

  A pipe (flow path) 245 is further connected to the recovery unit 27. Further, a blower 262 is installed in the middle of the pipe 245. By the operation of the blower 262, a suction force can be generated in the suction unit 153. This promotes the formation of the first web M5 on the mesh belt 151. The first web M5 is one from which dust, dirt and the like have been removed. Further, dust and dirt pass through the pipe 244 by the operation of the blower 262 and reach the collection unit 27.

  The housing portion 142 is connected to the humidifying portion 232. The humidifying unit 232 is configured of a vaporization type humidifier similar to the humidifying unit 231. Thus, the humidified air is supplied into the housing portion 142. The humidified air can humidify the first sorted matter M4-1, and thus can prevent the first sorted matter M4-1 from adhering to the inner wall of the housing portion 142 by electrostatic force.

  A humidifying unit 235 is disposed downstream of the sorting unit 14. The humidifying unit 235 is configured of an ultrasonic humidifier that sprays water. Thus, water can be supplied to the first web M5, and the water content of the first web M5 can be adjusted. By this adjustment, the adsorption of the first web M5 to the mesh belt 151 by electrostatic force can be suppressed. Thereby, the first web M5 is easily peeled off from the mesh belt 151 at a position where the mesh belt 151 is folded back by the stretching roller 152.

  The dividing unit 16 is disposed downstream of the humidifying unit 235. The subdivision unit 16 is a portion that performs a dividing step of dividing the first web M5 separated from the mesh belt 151. The subdivided portion 16 has a propeller 161 rotatably supported and a housing portion 162 for housing the propeller 161. Then, the first web M5 can be divided by the rotating propeller 161. The divided first web M5 becomes a subdivided body M6. Further, the subdivided body M6 descends in the housing portion 162.

  The housing portion 162 is connected to the humidifying portion 233. The humidifying unit 233 is configured of a vaporization type humidifier similar to the humidifying unit 231. Thus, humidified air is supplied into the housing portion 162. The humidified air can also prevent the subdivision body M6 from adhering to the propeller 161 and the inner wall of the housing portion 162 by electrostatic force.

  The mixing unit 17 is disposed downstream of the subdivision unit 16. The mixing part 17 is a part which performs the mixing process of mixing the subdivision M6 and the resin P1. The mixing unit 17 includes a resin supply unit 171, a pipe (flow passage) 172, and a blower 173.

  The pipe 172 connects the housing portion 162 of the subdivided portion 16 and the housing portion 182 of the loosening portion 18 and is a flow path through which the mixture M7 of the subdivided body M6 and the resin P1 passes.

  A resin supply unit 171 is connected in the middle of the pipe 172. The resin supply unit 171 has a screw feeder 174. By driving the screw feeder 174 to rotate, the resin P1 can be supplied to the tube 172 as powder or particles. The resin P1 supplied to the pipe 172 is mixed with the subdivision M6 to form a mixture M7.

  In addition, although resin P1 makes fibers bind in a later step, for example, a thermoplastic resin, a curable resin, etc. can be used, but it is preferable to use a thermoplastic resin. Examples of the thermoplastic resin include AS resin, ABS resin, polyethylene, polypropylene, polyolefin such as ethylene-vinyl acetate copolymer (EVA), modified polyolefin, acrylic resin such as polymethyl methacrylate, polyvinyl chloride, polystyrene, polyethylene Polyesters such as terephthalate and polybutylene terephthalate, nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6-12, nylon 6-66, etc. polyamide (nylon), polyphenylene ether, polyacetal , Polyether, polyphenylene oxide, polyetheretherketone, polycarbonate, polyphenylene sulfide, thermoplastic polyimide, polyetherimide, aromatic polyimide Various thermoplastic elastomers such as liquid crystal polymers such as esters, styrenes, polyolefins, polyvinyl chlorides, polyurethanes, polyesters, polyamides, polybutadienes, trans polyisoprenes, fluoro rubbers, chlorinated polyethylenes, etc. These may be used alone or in combination of two or more selected from these. Preferably, polyester or a resin containing this is used as the thermoplastic resin.

  In addition to the resin P1, for example, a colorant for coloring fibers, an aggregation inhibitor for suppressing aggregation of fibers and aggregation of the resin P1, and the like may be supplied from the resin supply unit 171. May be contained, for example, a flame retardant for making the paper incombustible, a paper strength agent for enhancing the paper strength of the sheet S, and the like. Alternatively, the resin P1 may be supplied from the resin supply portion 171 in advance (compounded) in which they are contained in the resin P1.

  Further, a blower 173 is installed in the middle of the pipe 172 on the downstream side of the resin supply unit 171. The subdivided body M6 and the resin P1 are mixed by the action of the rotating portion such as the blade of the blower 173. In addition, the blower 173 can generate an air flow toward the loosening unit 18. By this air flow, the subdivided body M6 and the resin P1 can be stirred in the pipe 172. Thus, the mixture M7 can flow into the loosening portion 18 in a state in which the subdivisions M6 and the resin P1 are uniformly dispersed. In addition, the subdivision M6 in the mixture M7 is loosened in the process of passing through the pipe 172 and becomes finer and fibrous.

  The loosening portion 18 is a portion of the mixture M7 that performs the step of loosening the entangled fibers. The loosening unit 18 includes a drum unit 181 and a housing unit 182 for housing the drum unit 181.

  The drum unit 181 is a screen formed in a cylindrical shape, and is a sieve that rotates about its central axis. The mixture M7 flows into the drum portion 181. Then, by rotating the drum unit 181, fibers and the like smaller than the mesh openings of the mixture M7 can pass through the drum unit 181. At that time, the mixture M7 will be loosened.

  In addition, the mixture M 7 loosened by the drum unit 181 drops while dispersing in air and travels to the second web forming unit 19 located below the drum unit 181. The second web forming unit 19 is a portion that performs a second web forming step of forming a second web M8 from the mixture M7. The second web forming unit 19 includes a mesh belt (separation belt) 191, a tension roller 192, and a suction unit (suction mechanism) 193.

  The mesh belt 191 is an endless belt, on which the mixture M7 is deposited. The mesh belt 191 is wound around four tension rollers 192. Then, the mixture M7 on the mesh belt 191 is conveyed to the downstream side by the rotational drive of the tension roller 192.

  Also, most of the mixture M7 on the mesh belt 191 has a size larger than the opening of the mesh belt 191. As a result, the mixture M7 is restricted from passing through the mesh belt 191, and can therefore be deposited on the mesh belt 191. Further, the mixture M <b> 7 is conveyed downstream together with the mesh belt 191 while being deposited on the mesh belt 191, and is thus formed as a layered second web M <b> 8.

  The suction unit 193 can suction air from below the mesh belt 191. This allows the mixture M7 to be sucked onto the mesh belt 191, thereby promoting the deposition of the mixture M7 on the mesh belt 191.

  A pipe (flow passage) 246 is connected to the suction portion 193. Further, a blower 263 is installed in the middle of the pipe 246. By the operation of the blower 263, suction can be generated at the suction portion 193.

  Note that each of the pipe 241, the pipe 242, the pipe 243, the pipe 244, the pipe 245, the pipe 246, and the pipe 172 may be configured as a single pipe, or may be configured as a connecting pipe connecting a plurality of pipes. It may be

  The housing portion 182 is connected to the humidifying portion 234. The humidifying unit 234 is configured of a vaporization type humidifier similar to the humidifying unit 231. Thus, humidified air is supplied into the housing portion 182. By the humidified air, the inside of the housing portion 182 can be humidified, and therefore, the mixture M7 can be suppressed from adhering to the inner wall of the housing portion 182 by electrostatic force.

  A humidifying unit 236 is disposed downstream of the loosening unit 18. The humidifying unit 236 is configured by an ultrasonic humidifier similar to the humidifying unit 235. Thus, the second web M8 can be supplied with water, and the water content of the second web M8 can be adjusted. By this adjustment, the adsorption of the second web M8 to the mesh belt 191 by electrostatic force can be suppressed. As a result, the second web M 8 is easily peeled off from the mesh belt 191 at the position where the mesh belt 191 is folded back by the tension roller 192.

  In addition, it is preferable that the moisture content (total moisture content) added to the humidification part 231-the humidification part 236 is 0.5 mass part or more and 20 mass parts or less with respect to 100 mass parts of materials before humidification, for example.

  A sheet forming unit 20 is disposed downstream of the second web forming unit 19. The sheet forming unit 20 is a portion that performs a sheet forming process of forming the sheet S from the second web M8. The sheet forming unit 20 includes a pressure unit 201 and a heating unit 202.

  The pressing unit 201 has a pair of calendar rollers 203, and can press the second web M8 between the calendar rollers 203 without heating (without melting the resin P1). This increases the density of the second web M8. Then, the second web M8 is conveyed toward the heating unit 202. One of the pair of calendar rollers 203 is a main driving roller driven by the operation of a motor (not shown), and the other is a driven roller.

  The heating unit 202 has a pair of heating rollers 204, and can heat and press the second web M8 between the heating rollers 204. By this heating and pressing, in the second web M8, the resin P1 is melted, and the fibers are bonded to each other through the melted resin P1. Thus, the sheet S is formed. Then, the sheet S is conveyed toward the cutting unit 21. Note that one of the pair of heating rollers 204 is a main driving roller driven by the operation of a motor (not shown), and the other is a driven roller.

  The cutting unit 21 is disposed downstream of the sheet forming unit 20. The cutting unit 21 is a portion that performs a cutting process of cutting the sheet S. The cutting unit 21 includes a first cutter 211 and a second cutter 212.

  The first cutter 211 cuts the sheet S in a direction intersecting the sheet S conveyance direction.

  The second cutter 212 cuts the sheet S in the direction parallel to the conveyance direction of the sheet S on the downstream side of the first cutter 211.

  By cutting the first cutter 211 and the second cutter 212, a sheet S having a desired size can be obtained. Then, the sheet S is conveyed further downstream and accumulated in the stock unit 22.

  As described above, in the present embodiment, the raw material supply unit 11 is configured of the sheet supply device 1. By the way, the raw material M1 supplied from the sheet supply apparatus 1 is used waste paper. Therefore, the raw material M1 contains a plurality of materials different in size and type, and it is preferable to smoothly supply these regardless of the size and type. Therefore, the sheet feeding apparatus 1 is configured to smoothly supply the raw material M1 regardless of the size and the type of the raw material M1. Hereinafter, the sheet feeding device 1 will be described.

  As shown in FIGS. 2 to 13, the sheet feeding apparatus 1 includes a stacking unit 3 that stacks a plurality of raw materials M1 (sheets) and a transport unit 4 that unloads the raw materials M1 (sheets) from the stacking unit 3. The detection unit 5 detects the presence or absence of the raw material M1 (sheet) in the accumulation unit 3 at the timing of (3), and the adjustment unit 6 adjusts the height of the raw material M1 (sheet) in the accumulation unit 3. The configuration of each part will be described below.

  As shown in FIG. 2 (the same applies to FIGS. 3 to 13), the stacking unit 3 has a box shape having a bottom 31 and a side wall 32 erected from the bottom 31. A plurality of raw materials M1 (sheets) different in size or type can be stacked and stacked inside the box-like stacking unit 3.

  In addition, as a case where the raw material M1 from which a magnitude | size differs is mixed, the case where A3 size, A4 size, A5 size, B3 size, B4 size, B5 size, a postcard size etc. are mixed, for example is mentioned. . Moreover, as a case where the raw material M1 from which a kind differs is mixed, the case where a postcard, PPC paper, a report paper etc. are mixed, for example is mentioned.

  The conveying unit 4 is disposed above the stacking unit 3. The transport unit 4 discharges the raw materials M1 (sheets) accumulated in the accumulation unit 3 one by one from the accumulation unit 3 from the upper side, and conveys them toward the x-direction negative side. The transport unit 4 causes the belt 41 disposed to face the raw material M1 (sheet) accumulated in the accumulation unit 3, a drive unit 42 that drives the belt 41, and causes the belt 41 to adsorb the raw material M1 (sheet). It has two suction parts 43, an auxiliary roller 44 for assisting the conveyance of the raw material M1 by the belt 41, an auxiliary roller 45 and an auxiliary roller 46.

  The belt 41 is composed of an endless belt. The belt 41 is a mesh belt having a large number of openings (not shown) penetrating in the thickness direction. Thereby, the belt 41 has air permeability.

  The constituent material of the belt 41 is not particularly limited, and, for example, various thermoplastic elastomers such as urethane rubber and the like, and various metal materials such as stainless steel and the like can be used.

  The driving unit 42 includes a main driving roller 421 connected to a motor (not shown), and a driven roller 422 spaced from the main driving roller 421 on the positive side in the x direction. The belt 41 is wound around the drive roller 421 and the driven roller 422. Then, when the driving roller 421 rotates, the rotational force is transmitted to the driven roller 422 via the belt 41. Thereby, the raw material M1 adsorbed to the belt 41 can be conveyed (see FIG. 5, FIG. 9, and FIG. 13).

  In addition, the operation of the drive unit 42 is controlled by the control unit 28 (see FIG. 14), and for example, the transport speed of the raw material M1 can be variable (for example, stepless, multistage setting).

  The auxiliary roller 44, the auxiliary roller 45, and the auxiliary roller 46 are all idle rollers.

  The auxiliary roller 44 is disposed below the drive roller 421 via the belt 41. In addition, the auxiliary roller 44 is disposed outside the discharge port 33 of the accumulation unit 3. The auxiliary roller 44 can sandwich the raw material M1 with the belt 41 and can stably discharge the raw material M1 from the discharge port 33 of the accumulation unit 3.

  Further, an auxiliary roller 45 and an auxiliary roller 46 are disposed downstream of the auxiliary roller 44 in the conveyance direction of the raw material M1. The auxiliary roller 45 and the auxiliary roller 46 are disposed one above the other, and the raw material M1 having passed between them is diverted toward the coarse portion 12 located below.

  As described above, the drive unit 42 includes the drive roller 421 and the driven roller 422 disposed apart from the drive roller 421. Further, the belt 41 has air permeability and is constituted by an endless belt wound around a main driving roller 421 and a driven roller 422.

  A plurality of adsorbing portions 43 are disposed inside the belt 41 which is an endless belt along the conveyance direction (x direction) of the raw material M1 (sheet). Hereinafter, the adsorption portion 43 on the upstream side (x direction positive side) of the conveyance direction of the raw material M1 is referred to as "adsorption portion 43A", and the adsorption portion 43 on the downstream side (x direction negative side) of the conveyance direction of the raw material M1 is "adsorption portion 43B There is a thing to say.

The adsorbing portion 43A and the adsorbing portion 43B each have a hollow body 431 and a pump (not shown) connected to the hollow body 431. Further, the adsorbing portion 43A and the adsorbing portion 43B (each hollow body 431) are respectively opened downward, and have a suction port 432 for sucking the raw material M1 (sheet) together with air. The suction unit 43A and the suction unit 43B respectively suck the raw material M1 (sheet) to the outside of the belt 41 (endless belt) by the suction force F ₄₃ generated at the suction port 432 when the pump is operated. (See, for example, FIGS. 3, 7 and 11). Thus, when the drive unit 42 is operated in the suction state, the belt 41 can be rotated to convey the raw material M1.

  The number of suction ports 432 may be one, but is preferably plural. When a plurality of suction ports 432 are formed, it is preferable that two or more of these suction ports 432 be arranged in each of the x direction and the y direction.

  Moreover, although two adsorption | suction parts 43 are arrange | positioned along x direction in this embodiment, it is not limited about this about the arrangement direction and the number of arrangement | positionings. For example, one suction portion 43 may be disposed, three or more may be disposed along the x direction, or two or more may be disposed along the y direction, or x Two or more may be disposed in each of the direction and the y direction. Here, in the case of having a plurality of suction units 43 (in the case of having suction units 43A and 43B as in this embodiment), each of the suction units 43 is configured to operate independently (separately). Is preferable, but some may operate in conjunction with each other.

Further, the operation of each suction unit 43 is controlled by the control unit 28 (see FIG. 14), for example, the suction force F ₄₃ is variable (for example, stepless, multistage setting) according to the size and type of the raw material M1. You can also

  In addition, each adsorption unit 43 is not limited to a system by suction of air, for example, may be configured to generate static electricity in the belt 41 and cause the raw material M1 to adsorb to the belt 41 by the static electricity, or The material M1 may be adsorbed to the belt 41 by a material.

  When the raw material M 1 (sheet) is adsorbed to the belt 41 by the adsorption unit 43, the used paper recycling apparatus 100 (sheet feeding device 1) is accumulated in the accumulation unit 3 with the raw material M 1 (sheet) adsorbed to the belt 41. The presence or absence (presence) of the raw material M1 (sheet) between the raw material M1 (sheet) located at the top of the raw materials M1 (sheet) (closest to the belt 41), ie, the raw material adsorbed to the belt 41 The detection unit 5 is provided to detect a hanging portion of the M1 (hereinafter, referred to as a hanging portion HG).

  Further, as described above, a plurality of suction units 43 are arranged along the conveyance direction of the raw material M1 (sheet). In addition, the used paper recycling apparatus 100 (sheet feeding apparatus 1) includes a control unit 28. And operation of each adsorption part 43 is controlled by control part 28 (refer to Drawing 14). The control unit 28 can switch the operation timing of each suction unit 43 based on the detection result of the detection unit 5. Thereby, as described later, it is possible to appropriately select and switch the operation and the operation stop of each adsorbing portion 43 according to the various raw materials M1, that is, the raw materials M1 different in size and type. It contributes to the conveyance of the stable raw material M1 (for example, refer FIG. 5, FIG. 9, FIG. 13).

As shown in FIG. 2, the detection unit 5 is provided near the lower side of the belt 41. The detection unit 5 is a light transmission type sensor including a light emitting unit ₅₁ for projecting the laser beam LB ₅₁ and a light receiving unit 52 for receiving the laser beam LB ₅₁ from the light emitting unit 51. The light emitting unit 51 and the light receiving unit 52 are disposed to face each other in the x direction. Then, if the laser beam LB ₅₁ from the light emitting unit 51 is blocked by the hanging portion HG of the raw material M1 adsorbed to the belt 41 and the light receiving unit 52 is prevented from receiving light (FIG. 3, FIG. 7, FIG. 11), it is determined that the material M1 adsorbed to the belt 41 has a hanging portion HG. Further, in the case opposite to this, the control unit 28 can determine that the material M1 adsorbed to the belt 41 does not have the hanging portion HG. The determination of the presence or absence of the hanging portion HG is performed by the control unit 28.

  In addition, although the light transmission type sensor is used as the detection part 5 in this embodiment, it is not limited to this, You may use a light reflection type sensor. In addition to such an optical sensor, for example, a magnetic sensor, a capacitance sensor, or the like may be used.

  The waste paper recycling apparatus 100 (sheet feeding apparatus 1) adjusts the separation distance between the belt 41 and the raw material M1 (sheet) positioned at the top of the raw materials M1 (sheets) accumulated in the accumulation unit 3. The unit 6 is provided. The adjustment unit 6 is disposed in the stacking unit 3 and has a mounting table 61 on which the accumulated raw material M1 is mounted, an elevating mechanism 62 for moving the mounting table 61 up and down along the z direction, the mounting table 61, and elevating and lowering And a connecting portion 63 for connecting the mechanism 62. Thus, the raw material M1 can be moved up and down together with the mounting table 61, so that the raw material M1 located at the top can be adsorbed to the belt 41 at a height (the distance from the raw material M1 to the belt 41). (See, eg, FIGS. 2, 6, and 10). Then, by operating the adsorption unit 43 in this state, the raw material M1 located at the top can be accurately adsorbed (see, for example, FIG. 3, FIG. 7, and FIG. 11).

  In addition, it does not specifically limit as a structure of the raising / lowering mechanism 62, For example, it can be set as the structure provided with the reduction gear which has several gear which meshed mutually, and the motor connected with the reduction gear.

  Further, the operation of the elevation mechanism 62 is controlled by the control unit 28 (see FIG. 14), and, for example, the elevation speed and the elevation amount can be variable (for example, stepless and multistage setting).

  Moreover, although the adjustment part 6 is comprised so that the separation distance of the raw material M1 and the belt 41 may be adjusted by raising / lowering the raw material M1 in this embodiment, it is not limited to this. For example, the adjusting unit 6 may be configured to adjust the separation distance between the raw material M1 and the belt 41 by moving the belt 41 up and down.

  Next, the operating state of the sheet feeding device 1 will be described. In this operating state, there is a first pattern (see FIGS. 2 to 5) as that 1 and a second pattern (see FIGS. 6 to 9) as that 2. There is a third pattern (3) as that 3 10 to 13). Also, each pattern is an example.

  The raw material M1 to be transported in the first pattern, that is, the raw material M1 located at the top (hereinafter referred to as "raw material M1-1") is folded in two, and its bent portion BP is positive in the x direction Located on the side. The raw material M1-1 is, for example, A3 size PPC paper, and all the raw materials M1 located below the raw material M1-1 are, for example, A4 size PPC paper.

  The raw material M1 to be transported in the second pattern (hereinafter referred to as "raw material M1-2") is also folded in two in the same manner as the raw material M1-1, but the bent portion BP is on the negative side in the x direction positioned. The raw material M1-2 is also, for example, A3-sized PPC paper, and all the raw materials M1 located below the raw material M1-2 are, for example, A4-sized PPC paper.

  The raw material M1 to be transported in the third pattern (hereinafter referred to as "raw material M1-3") is, for example, a leaf. The raw material M1-3 stands by at the negative side in the x direction in the accumulation unit 3. Further, all of the raw materials M1 located below the raw materials M1-3 are, for example, A4-sized PPC paper. In the stacking unit 3, the raw materials M1-3 are on standby in the x direction on the negative side, but the invention is not limited thereto. For example, the raw materials M1-3 may stand on the positive side in the x direction.

First, the first pattern will be described with reference to FIGS.
As shown in FIG. 2, neither the suction unit 43 </ b> A nor the suction unit 43 </ b> B has been operated yet. In addition, the raw material M1-1 is located at a height at which the adjusting unit 6 can adsorb the belt 41.

Next, as shown in FIG. 3, the suction unit 43A and the suction unit 43B are operated at once to make the suction force F ₄₃ act on the raw material M1-1. As a result, almost the entire upper part of the raw material M1-1 is adsorbed to the belt 41, but the lower part is not adsorbed and becomes the hanging portion HG. At this time, the laser beam LB ₅₁ from the light emitting unit 51 is blocked at the hanging portion HG, and the light reception at the light receiving unit 52 is blocked. Thus, the detection unit 5 detects that the hanging portion HG is present in the raw material M1-1.

  Note that the raw material M1 located below the raw material M1-1 is in a state of being mounted on the mounting table 61 without being adsorbed by the belt 41.

Then, as shown in FIG. 4, the raw material M1-1, to maintain the operation of the suction unit 43B, while allowed to act the suction force F _43, and stops the operation of the suction unit 43A, the suction force F Release ₄₃ . As a result, the upstream portion of the upper portion of the raw material M1-1 is in a state of being adsorbed to the belt 41. Further, the raw material M1-1 may amount corresponding to the attraction force _{F 43} of the suction portion 43A is released, but dangling portion HG is increased, since the suction force _{F 43} is released, during transport of the raw materials M1-1 Deployment of the bent portion BP of the

  Further, the mounting table 61 is lowered along with the operation stop of the suction unit 43A. As a result, the raw material M1 placed on the mounting table 61 can be separated as much as possible from the raw material M1-1, thereby preventing the transfer of the raw material M1-1 from being hindered, ie, the raw material M1 Smooth transport of -1 is possible.

  Next, as shown in FIG. 5, the drive unit 42 is operated to rotate the belt 41. Thereby, the raw material M1-1 moves toward the x direction negative side. Further, along with this movement, the bent portion BP unfolds (spreads), and the hanging portion HG is gradually stretched. Then, the raw material M1-1 passes through the discharge port 33 of the stacking unit 3, the auxiliary roller 44, the auxiliary roller 45, and the auxiliary roller 46 in order, and is discharged from the stacking unit 3. This carried-out raw material M1-1 goes to the crushing unit 12 and is used for the production of the sheet S.

Next, the second pattern will be described with reference to FIGS.
As shown in FIG. 6, both of the suction unit 43A and the suction unit 43B have not operated yet. In addition, the raw material M1-2 is positioned at a height at which the adjustment unit 6 can adsorb the belt 41.

Next, as shown in FIG. 7, the suction unit 43A and the suction unit 43B are operated at once to make the suction force F ₄₃ act on the raw material M1-2. As a result, almost the entire upper part of the raw material M1-2 is adsorbed to the belt 41, but the lower part is not adsorbed and becomes the hanging portion HG. At this time, the laser beam LB ₅₁ from the light emitting unit 51 is blocked at the hanging portion HG, and the light reception at the light receiving unit 52 is blocked. Thereby, the detection unit 5 detects that the hanging portion HG is present in the raw material M1-2.

  Note that the raw material M1 located below the raw material M1-2 is in a state of being mounted on the mounting table 61 without being adsorbed by the belt 41.

Then, as shown in FIG. 8, the raw material M1-2, to maintain the operation of the suction unit 43B, while allowed to act the suction force F _43, and stops the operation of the suction unit 43A, the suction force F Release ₄₃ . As a result, the upstream portion of the upper portion of the raw material M1-2 is in a state of being adsorbed to the belt 41.

  Further, the mounting table 61 is lowered along with the operation stop of the suction unit 43A. As a result, the raw material M1 placed on the mounting table 61 can be separated as much as possible from the raw material M1-2, thereby preventing the transfer of the raw material M1-2 from being hindered, ie, the raw material M1 -2 can be transported smoothly.

  Next, as shown in FIG. 9, the drive unit 42 is operated to rotate the belt 41. As a result, the raw material M1-2 moves toward the x direction negative side with the bending portion BP at the top, and between the discharge port 33 of the accumulation portion 3, the auxiliary roller 44, the auxiliary roller 45 and the auxiliary roller 46 as it is In order, and is taken out of the accumulation unit 3. The carried-out raw material M1-2 goes to the crushing unit 12 and is used for the production of the sheet S.

  Next, the third pattern will be described with reference to FIGS. 10 to 13. Here, the raw material M1 located immediately below the raw material M1-3 is referred to as "raw material M1-4".

  As shown in FIG. 10, each of the suction unit 43A and the suction unit 43B has not operated yet. In addition, the raw material M1-3 is positioned at a height at which the adjusting unit 6 can adsorb the belt 41. Further, since the raw material M1-3 is a thin sheet, the raw material M1-4 is also in a state of being able to be attracted to the belt 41, similarly to the raw material M1-3.

Next, as shown in FIG. 11, the suction unit 43A and the suction unit 43B are operated collectively. Thus, the suction force _{F 43} by the suction portion 43B to act on raw materials M1-3, material M1-3 may be adsorbed to the belt 41.

On the other hand, the suction force F ₄₃ generated by the suction unit 43 A acts on the upstream portion of the raw material M 1-4, and the portion is adsorbed by the belt 41. At this time, the downstream portion of the raw material M1-4 is not adsorbed and becomes a hanging portion HG. This dangling portion HG, the laser beam LB ₅₁ from the light projecting portion 51 is shielded from light, received at the light receiving portion 52 is prevented. Accordingly, the detection unit 5 detects that the hanging portion HG is present.

  In addition, the raw material M1 located below the raw material M1-4 is in the state mounted on the mounting base 61 as it is, without adsorb | sucking to the belt 41. As shown in FIG.

Then, as shown in FIG. 12, to maintain the operation of the suction unit 43B, while allowed to act the suction force F _43, and stops the operation of the suction unit 43A, to release the suction force F _43. Thereby, the raw material M1-3 is maintained in the state of being adsorbed to the belt 41, but the raw material M1-4 is separated from the belt 41.

  Moreover, it is preferable to lower the mounting table 61 with the stop of the operation of the suction unit 43A. As a result, the raw material M1 placed on the mounting table 61 can be separated as much as possible from the raw material M1-3, thereby preventing the transfer of the raw material M1-3 from being hindered, ie, the raw material M1 -3 can be transported smoothly.

  Next, as shown in FIG. 13, the drive unit 42 is operated to rotate the belt 41. Thereby, the raw material M1-3 moves toward the negative side in the x direction, and passes through the discharge port 33 of the accumulation unit 3, the auxiliary roller 44, the auxiliary roller 45, and the auxiliary roller 46 in that order. It is carried out of the accumulation unit 3. This carried-out raw material M1-3 goes to the crushing unit 12 and is used for the production of the sheet S.

  As described above, a plurality of suction units 43 are arranged along the conveyance direction of the raw material M1 (sheet). Then, when the control unit 28 operates the suction unit 43A and the suction unit 43B (each suction unit 43) collectively and the detection unit 5 detects the hanging portion HG of the raw material M1 (sheet), the suction operation is performed. The operation of the suction unit 43A (the suction unit 43 on the upstream side in the conveyance direction) is stopped while maintaining the operation of the unit 43B (the suction unit 43 on the downstream side of the raw material M1 (sheet) in the conveyance direction).

  Then, the conveyance unit 4 operates the suction unit 43A (the suction unit 43 on the upstream side in the conveyance direction) while maintaining the operation of the suction unit 43B (the suction unit 43 on the downstream side of the material M1 (sheet) in the conveyance direction). In the stopped state, the raw material M1 (sheet) is conveyed.

  It should be noted that unlike the first to third patterns, the suction portion 43A and the suction portion 43B are operated at once, and when the drooping portion HG is not detected, the operation of both the suction portion 43A and the suction portion 43B is maintained. The raw material M1 is conveyed as it is. Also by this, the raw material M1 can be carried out of the accumulation unit 3, and the sheet S can be manufactured from the raw material M1.

  As described above, the sheet feeding apparatus 1 can smoothly use the raw material M1 regardless of the size (for example, postcard size, A4 size, A3 size, etc.) and type (for example, postcard, PPC paper, etc.) of the raw material M1. Can be supplied. Then, the supplied raw material M1 is used for the production of the sheet S.

Second Embodiment
FIG. 15 and FIG. 16 are each a schematic side view sequentially showing the operating state of the sheet feeding device provided in the used paper recycling apparatus (second embodiment) of the present invention. FIG. 17 is a view (plan view) viewed from the direction of arrow A in FIG.

Hereinafter, the second embodiment of the sheet feeding apparatus and the used paper recycling apparatus of the present invention will be described with reference to these drawings, but differences from the above-described embodiment will be mainly described, and the same matters will not be described. I omit it.
The present embodiment is the same as the first embodiment except that the configuration of the detection unit is different.

As shown in FIG. 17, in the present embodiment, in addition to the light emitting unit 51 and the light receiving unit 52, the detecting unit 5 further includes a light emitting unit 53 for emitting the laser beam LB _53, and a light emitting unit 53. a light transmission type sensor having a light receiving portion 54 for receiving the laser beam _{LB 53} of the light projecting unit 55 for projecting the laser beam _{LB 55,} the light receiving portion 56 for receiving the laser beam _{LB 55} from the light projecting unit 55 And a light transmitting sensor having The light emitting unit 53 and the light receiving unit 54 are disposed in the vicinity of the lower side of the suction unit 43A. In addition, the light emitting unit 53 and the light receiving unit 54 are disposed to face each other in the y direction. The light emitting unit 55 and the light receiving unit 56 are disposed in the vicinity of the lower side of the suction unit 43B. In addition, the light emitting unit 55 and the light receiving unit 56 are disposed to face each other in the y direction.

Then, the laser light LB ₅₁ from the light emitting unit 51 is blocked by the hanging portion HG of the raw material M1-2 adsorbed to the belt 41, and light reception by the light receiving unit 52 is blocked. When the laser beam LB ₅₃ is blocked and the light reception by the light receiving unit 54 is blocked, as shown in FIG. 15, the operation of both the suction unit 43A and the suction unit 43B is maintained. The laser beam LB 55 from the light emitting unit ₅₅ is received by the light receiving unit 56 (see FIG. 17).

  And if the drive part 42 is operated in this state, as shown in FIG. 16, the raw material M1-2 can be conveyed. Thereby, the raw material M1-2 can be carried out from the accumulation part 3, and the sheet S can be manufactured with the raw material M1-2.

  In such a present embodiment, the second pattern in the first embodiment is different, and it is possible to omit stopping the operation of the adsorption portion 43A, and the rapid conveyance of the raw material M1-2 is possible for that amount. It becomes.

  As mentioned above, although the sheet supply apparatus and the used paper recycling apparatus of the present invention have been described with reference to the illustrated embodiment, the present invention is not limited thereto, and the respective parts constituting the sheet supply apparatus and the used paper recycling apparatus are the same. It can be replaced with any configuration that can exert a function. Also, any component may be added.

  Further, the sheet feeding apparatus and the used paper recycling apparatus of the present invention may be a combination of any two or more configurations (features) of the respective embodiments.

DESCRIPTION OF SYMBOLS 100 ... Waste paper recycling apparatus (sheet manufacturing apparatus), 1 ... Sheet supply apparatus, 3 ... Stacking part, 31 ... Bottom part, 32 ... Side wall, 33 ... Discharge port, 4 ... Conveying part, 41 ... Belt, 42 ... Driving part, 421 ... Drive roller, 422 ... Followed roller, 43 ... Adsorption section, 43 A ... Adsorption section, 43 B ... Adsorption section, 431 ... Hollow body, 432 ... Suction port, 44 ... Auxiliary roller, 45 ... Auxiliary roller, 46 ... Auxiliary roller, 5 ... Detection unit 51 light projection unit 52 light receiving unit 53 light projection unit 54 light receiving unit 55 light projection unit 56 light receiving unit 56 light receiving unit 6 adjustment unit 61 mounting table 62 raising and lowering Mechanism 63 63 Coupling portion 11 Raw material supply portion 12 Crushing portion 121 Crushing blade 122 Shoot (hopper) 13 Disintegration portion 14 Sorting portion 141 Drum portion (sieving portion ), 142 ... housing part, 15 ... first web forming part, 15 ... Mesh belt, 152: Stretching roller, 153: Suction part (suction mechanism), 16: Subdivision part, 161: Propeller, 162: Housing part, 17: Mixing part, 171: Resin supply part, 172: Tube (flow path , 173: blower, 174: screw feeder, 18: loosening unit, 181: drum unit, 182: housing unit, 19: second web forming unit, 191: mesh belt (separation belt), 192: stretching roller, 193 ... Suction unit (suction mechanism), 20 ... sheet forming unit, 201 ... pressing unit, 202 ... heating unit, 203 ... calendar roller, 204 ... heating roller, 21 ... cutting unit, 211 ... first cutter, 212 ... second Cutter 22 22 stock unit 231 humidification unit 232 humidification unit 233 humidification unit 234 humidification unit 235 humidification unit 2 6 Humidification part, 241 ... pipe (channel), 242 ... pipe (channel), 243 ... pipe (channel), 244 ... pipe (channel), 245 ... pipe (channel), 246 ... pipe (flow) Path: 261: blower, 262: blower, 263: blower, 27: recovery unit, 28: control unit, 281: CPU (central processing unit), 282: storage unit, BP: bending portion, HG: drooping portion, F ₄₃ ... suction force, LB ₅₁ ... laser beam, LB ₅₃ ... laser beam, LB ₅₅ ... laser beam, M1 ... raw material, M1-1 ... raw material, M1-2 ... raw material, M1-3 ... raw material, M1-4 ... Raw materials, M2: coarse fragments, M3: defibrated material, M4-1: first sorted material, M4-2: second sorted material, M5: first web, M6: subdivided material, M7: mixture, M8: second Web, P1 ... resin, S ... sheet

Claims (9)

An accumulation unit capable of accumulating a plurality of sheets of different sizes or types;
And a conveyance unit that discharges and conveys the sheets accumulated in the accumulation unit one by one from the accumulation unit,
The transport unit is a belt disposed to face the sheets accumulated in the accumulation unit;
A drive unit for driving the belt;
A sheet feeding apparatus comprising: at least one suction unit for suctioning the sheet to the belt. The driving unit includes a driving roller and a driven roller disposed apart from the driving roller.
The belt is an air-permeable endless belt which is wound around the drive roller and the driven roller.
The suction unit is disposed inside the endless belt and has a suction port for suctioning the sheet with air, and suctions the sheet to the outside of the endless belt by a suction force generated by the suction port. The sheet feeding device described in.   The sheet feeding apparatus according to claim 1, wherein a plurality of the suction units are disposed in the sheet conveyance direction.   When the sheet is adsorbed to the belt by the adsorption unit, the sheet between the sheet adsorbed to the belt and the sheet positioned at the top of the sheets accumulated in the accumulation unit The sheet feeding apparatus according to any one of claims 1 to 3, further comprising a detection unit that detects the presence or absence of the sheet. A plurality of the suction units are disposed along the sheet conveyance direction,
The sheet feeding apparatus according to claim 4, further comprising: a control unit that switches operation timings of the suction units based on a detection result of the detection unit. A plurality of the suction units are disposed along the sheet conveyance direction,
When the control unit operates the suction units collectively and the detection unit detects the sheet, the control unit maintains the operation of the suction unit on the downstream side in the conveyance direction of the sheet. The sheet feeding apparatus according to claim 5, wherein the operation of the suction unit on the upstream side in the conveyance direction is stopped.   The conveyance unit conveys the sheet in a state in which the operation of the suction unit on the upstream side in the conveyance direction is stopped while maintaining the operation of the suction unit on the downstream side of the sheet in the conveyance direction. The sheet feeding device described in.   The sheet feeding apparatus according to any one of claims 1 to 7, further comprising: an adjustment unit configured to adjust a separation distance between the sheet positioned at the top of the sheets accumulated in the accumulation unit and the belt. .   An apparatus for reclaiming waste paper comprising the sheet feeding device according to any one of claims 1 to 8, which is used for feeding used waste paper.

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