JP2017039568A - Sheet-like raw material sorting apparatus, sheet-like raw material sorting method, waste paper processing apparatus and sheet manufacturing apparatus - Google Patents

Abstract

The present invention provides a sheet-shaped raw material separation device capable of easily separating a sheet-shaped raw material in an abnormal state. A sheet-shaped raw material sorting apparatus includes a stacking unit for stacking sheet-shaped raw materials, a transport unit for attaching and transporting the uppermost sheet-shaped raw material from the stacking unit, and at least a sheet-shaped raw material by the transport unit. A detection unit that detects the presence or absence of a sheet-like raw material in a state in which a part is moved to a predetermined height, and when the detection unit detects that there is a sheet-like raw material, To accommodate. [Selection] Figure 1

Description

  The present invention relates to a sheet-shaped raw material sorting apparatus, a sheet-shaped raw material sorting method, a used paper processing apparatus, and a sheet manufacturing apparatus.

  2. Description of the Related Art Conventionally, a paper making apparatus including a pulp suspension manufacturing unit, a deinking pulp unit, a paper making unit, a finishing unit, and a waste liquid processing unit is known. The pulp suspension manufacturing unit manufactures recycled pulp by breaking apart used paper cut paper pieces, and includes a used paper input unit, a shredder, a metal piece removing unit, and the like. The shredder cuts the used paper fed from the used paper feeding unit into paper pieces, and the metal piece removing unit is provided near the lower portion of the shredder and removes metals such as staples of the stapler (for example, see Patent Document 1). .

JP 2011-32607 A

  However, in the above papermaking apparatus, waste paper with metals such as staples of the stapler is put into the shredder, so that the metals and the cutting blade of the shredder come into contact with each other, and the life of the shredder is shortened due to damage to the cutting blade. There was a problem.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  [Application Example 1] A sheet-shaped raw material sorting apparatus according to this application example includes a stacking unit for stacking sheet-shaped raw materials, a transport unit for attaching and transporting the uppermost sheet-shaped raw material from the stacking unit, and the transport unit When detecting that there is a sheet-like raw material by the detection unit detecting the presence or absence of the sheet-like raw material in a state where at least a part of the sheet-like raw material is moved to a predetermined height by the sheet-like raw material The raw material is accommodated in the first accommodating portion.

  According to this configuration, when the uppermost sheet-like raw material loaded on the loading unit is a plurality of sheet-like raw materials bound with staples or the like, the second and subsequent sheet-like raw materials hang down and are detected. As a result, the single sheet material (normal sheet material) and the sheet material (abnormal sheet material) in which a plurality of sheets are bound by a stapler needle or the like are surely obtained. Can be separated.

  Application Example 2 The detection unit of the sheet-like material sorting device according to the application example is disposed above the stacking unit and above the uppermost sheet-like material stacked on the stacking unit. It is characterized by being.

  According to this configuration, when the sheet-like raw material is adhered from the stacking unit and moved upward by the transport unit, detection by the detection unit can be performed, so that efficient detection is possible, and the separation process is performed in a short time. Can be done.

  Application Example 3 In the sheet-shaped raw material sorting apparatus according to the application example, when the detection unit detects that there is no sheet-shaped raw material, the sheet-shaped raw material is stored in the second storage unit.

  According to this configuration, since the reusable (normal) sheet-shaped raw material is stored in the second storage unit, it can be easily transported and loaded into another device.

  Application Example 4 In the sheet-like raw material sorting apparatus according to the application example, when the detection unit detects that there is no sheet-like raw material, the sheet-like raw material is conveyed to the supply unit.

  According to this configuration, a reusable sheet-shaped raw material can be directly sent to a supply unit (for example, a paper feed port of a shredder).

  Application Example 5 In the sheet-like raw material sorting apparatus according to the application example, image acquisition is performed for acquiring an image of the sheet-like raw material in a state where at least a part of the sheet-like raw material is moved to a predetermined height by the transport unit. And a determination unit that determines the state of the sheet-shaped raw material based on the image of the sheet-shaped raw material acquired by the image acquisition unit, and the determination unit is in an abnormal state of the sheet-shaped raw material When the determination is made, the sheet-shaped raw material is accommodated in the first accommodating portion.

  According to this configuration, for example, the image acquisition unit can detect a sheet-shaped raw material having a size different from a predetermined size, a torn sheet-shaped raw material, or a sheet-shaped raw material with a staple of a stapler. Sheet raw materials can be separated.

  [Application Example 6] A used paper processing apparatus according to this application example includes the above-described sheet-shaped raw material sorting apparatus, and a crushing unit that crushes the sheet-shaped raw material supplied from the sheet-shaped raw material sorting apparatus into a roughly crushed piece. It is characterized by having.

  According to this configuration, for example, a sheet-like raw material with a stapler needle is not supplied to the crushing portion, and occurrence of problems such as damage to the crushing portion can be suppressed.

  [Application Example 7] A sheet manufacturing apparatus according to this application example includes the above-described sheet-shaped raw material sorting apparatus, a crushing unit that crushes the sheet-shaped raw material supplied from the sheet-shaped raw material sorting apparatus into a roughly crushed piece, It has a defibrating part for defibrating coarsely crushed pieces into a defibrated material, and a sheet forming part for forming a sheet using at least a part of the defibrated material.

  According to this configuration, since the sheet-like raw material and the different-size sheet-like raw materials are sorted in advance, the conveyance failure such as double feeding and paper jam is reduced, and the supply amount of the sheet-like raw material is stabilized. As a result, a sheet with high uniformity in basis weight can be produced.

  [Application Example 8] The sheet-shaped raw material sorting method according to this application example is such that the uppermost sheet-shaped raw material stacked is attached and conveyed, and at least a part of the attached sheet-shaped raw material is moved to a predetermined height. In this state, when the presence or absence of the sheet-like raw material is detected and the presence of the sheet-like raw material is detected, the sheet-like raw material is accommodated in the first accommodating portion.

  According to this configuration, when the uppermost sheet-like raw material loaded on the loading unit is a plurality of sheet-like raw materials bound with staples or the like, the second and subsequent sheet-like raw materials hang down and are detected. As a result, the single sheet material (normal sheet material) and the sheet material (abnormal sheet material) in which a plurality of sheets are stapled by a stapler or the like can be surely obtained. Can be separated.

The schematic perspective view which shows the structure of the sheet-like raw material separation apparatus concerning 1st Embodiment. The schematic side view which shows the structure of the sheet-like raw material separation apparatus concerning 1st Embodiment. The schematic side view which shows the structure of the sheet-like raw material separation apparatus concerning 1st Embodiment. The schematic side view which shows the structure of the sheet-like raw material separation apparatus concerning 1st Embodiment. The schematic side view which shows the structure of the sheet-like raw material separation apparatus concerning 1st Embodiment. The schematic side view which shows the structure of the sheet-like raw material separation apparatus concerning 1st Embodiment. The flowchart which shows the sheet-like raw material separation method concerning 1st Embodiment. The schematic diagram which shows operation | movement of the sheet-like raw material separation apparatus concerning 1st Embodiment. The schematic diagram which shows operation | movement of the sheet-like raw material separation apparatus concerning 1st Embodiment. The schematic diagram which shows operation | movement of the sheet-like raw material separation apparatus concerning 1st Embodiment. The schematic perspective view which shows the structure of the sheet-like raw material separation apparatus concerning 2nd Embodiment. The flowchart which shows the sheet-like raw material separation method concerning 2nd Embodiment. The schematic side view which shows the structure of the used paper processing apparatus concerning 3rd Embodiment. The schematic diagram which shows the structure of the sheet manufacturing apparatus concerning 4th Embodiment.

  Hereinafter, first to fourth embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each member or the like is shown differently from the actual scale so as to make each member or the like recognizable.

(First embodiment)
First, the configuration of the sheet-like material sorting device. The sheet-shaped raw material separation device includes a stacking unit for stacking the sheet-shaped raw material, a transport unit for attaching and transporting the uppermost sheet-shaped raw material from the stacking unit, and at least a part of the sheet-shaped raw material by the transport unit. In this state, when the presence of the sheet-like raw material is detected by the detection unit that detects the presence or absence of the sheet-like raw material, the sheet-like raw material is accommodated in the first accommodation unit. This will be specifically described below.

  FIG. 1 is a schematic perspective view showing the configuration of a sheet-shaped raw material sorting apparatus, and FIGS. 2 to 6 are schematic side views showing the configuration of the sheet-shaped raw material sorting apparatus.

  As shown in FIG. 1, the sheet-like raw material sorting apparatus 10 according to the present embodiment includes a stacking unit 300, a transport unit 400, a detection unit 600, a first storage unit 700, a second storage unit 800, and the like. The control part (not shown) which controls each part of these is provided.

  The stacking unit 300 stacks a plurality of sheet-shaped raw materials Pu. The sheet-like raw material Pu includes fibers such as waste paper and pulp sheet. In the present embodiment, the sheet-shaped raw material Pu will be described assuming, for example, standard (A4 size) paper (used paper) that is currently mainstream in offices.

  As shown in FIGS. 1 and 2, the stacking unit 300 includes a tray 301 that accumulates and stores a plurality of sheet-shaped raw materials Pu, and a moving mechanism that moves (lifts) the tray 301 in the vertical direction (Z-axis direction). 302. The moving mechanism 302 of this embodiment includes a ball screw shaft 310, a ball nut 311 to which the tray 301 is connected, a guide portion 318 that guides the ball nut 311 in the moving direction, and the like. A motor 312 is connected to the ball screw shaft 310. As the motor 312, various motors such as a stepping motor, a servo motor, and a linear motor can be adopted. The power from the motor 312 is transmitted to the ball screw shaft 310. Thereby, the ball screw shaft 310 rotates, and the tray 301 connected to the ball nut 311 can move in the direction of the ball screw shaft 310 (Z-axis direction). Further, the movement amount (position) of the tray 301 is configured to be detectable by a rotary encoder 313 that detects the rotation direction and the rotation amount of the motor 312 or the ball screw shaft 310.

  Further, the stacking unit 300 is provided with a level sensor (not shown) that detects the position of the uppermost sheet-like material Pu stacked on the tray 301. Then, the control unit controls the position of the tray 301 based on the output signal of the level sensor so that the uppermost sheet-like raw material is always at the specified position. That is, when the uppermost sheet-shaped raw material Pu is conveyed from the tray 301, the control unit drives the motor 312 to raise the tray 301 and loads it on the tray 301 based on the output signal of the level sensor ( When the sheet-like raw material Pu (which has newly become the highest level) reaches a specified position, the driving of the motor 312 is stopped. Thereby, the position of the uppermost sheet-like raw material Pu can always be kept at the specified position. The specified position may be within a range in which the uppermost sheet-shaped raw material Pu can be adsorbed by the adsorbing unit 430 described later, and the position control (raising) of the tray 301 is in units of one sheet. Alternatively, a predetermined number of sheets may be used.

  The transport unit 400 transports the sheet-like raw material Pu stacked on the stacking unit 300 to the first storage unit 700 or the second storage unit 800. The transport unit 400 of the present embodiment is a 4-axis driven horizontal articulated robot. The transport unit 400 includes a base unit 410 installed on the installation surface, a first arm unit 411 coupled to the base unit 410, a second arm unit 412 coupled to the first arm unit 411, and a second arm unit. And a third arm portion 413 connected to 412.

  The base portion 410 and the first arm portion 411 are coupled to each other via a first joint portion 415 so that the first arm portion 411 can be rotated by driving a motor or the like with the vertical direction (Z-axis direction) as the first axis. . Further, the second arm portion 412 is connected to the first arm portion 411 via the second joint portion 416 so as to be rotatable by driving a motor or the like with the Z-axis direction as the second axis. The second arm portion 412 is connected to a third arm portion 413 whose third axis is the Z-axis direction. In addition, a suction portion 430 is connected to one end portion of the third arm portion 413. The third arm portion 413 includes a ball screw as a moving mechanism, a guide, and a motor, and is coupled so as to be movable in the Z-axis direction. Further, the third arm portion 413 is connected to a motor or the like so as to be rotatable about the third axis. As a result, the suction portion 430 connected to the third arm portion 413 can move in the Z-axis direction and can rotate about the third axis. An actuator such as a motor is electrically connected to the control unit and is driven based on a control signal from the control unit.

  The adsorbing unit 430 adsorbs the sheet-like raw material Pu stacked on the stacking unit 300. As shown in FIGS. 1 and 3, the adsorbing part 430 is arranged on a surface facing the connection plate 431 connected to the third arm part 413 and the sheet-like raw material Pu loaded on the stacking part 300 of the connection plate 431. The suction pad 432 is provided. The suction pad 432 has an opening and is made of a material having an elastic force such as rubber. One end side of the polyurethane tube 433 or the like is piped to the suction pad 432. A suction mechanism (not shown) such as a pump for sucking air is connected to the other end of the polyurethane tube 433, and air is sucked from the opening of the suction pad 432 by driving the suction mechanism.

  A plurality of suction pads 432 according to the present embodiment are arranged. Specifically, four suction pads 432 are provided and arranged at locations corresponding to the four corners of the sheet-like raw material Pu. Thereby, in the process which adsorb | sucks and conveys the sheet-like raw material Pu, the drooping of the four corners of the sheet-like raw material Pu can be suppressed.

  Here, an operation of adsorbing the sheet-like raw material Pu by the transport unit 400 will be described with reference to FIGS. 3 to 5. First, as shown in FIG. 3, the first to third arm portions 411 to 413 are appropriately driven to move the adsorbing portion 430 above the sheet-like raw material Pu stacked on the stacking portion 300. Next, as shown in FIG. 4, the third arm portion 413 is driven to lower the adsorption portion 430 to the uppermost position of the sheet-like raw material Pu. Then, the suction mechanism is driven to adsorb the upper surface of the sheet-like raw material Pu to the suction pad 432 by negative pressure. Next, as shown in FIG. 5, the third arm portion 413 is driven to raise the suction portion 430 to a predetermined height. Thereafter, the first arm unit 411 and the second arm unit 412 are driven to move the suction unit 430 to a position corresponding to the first storage unit 700 or the second storage unit 800, and then the suction operation by the suction mechanism is stopped. Let Thereby, the sheet-like raw material Pu is separated from the suction pad 432 and is stored in the first storage unit 700 or the second storage unit 800. By repeating the above operation, the sheet-like raw material Pu stacked on the stacking unit 300 is stored in either the first storage unit 700 or the second storage unit 800.

  The detection unit 600 detects the state of the sheet material Pu. Specifically, for example, it is detected whether a plurality of sheets of raw material Pu are bound by a stapler needle or the like. By detecting the state of the sheet-like raw material Pu and discriminating between the sheet-like raw material Pu in an abnormal state and the sheet-like raw material Pu in a normal state, it is possible to reduce the occurrence of a conveyance failure or the like.

  As shown in FIG. 3, the detection unit 600 is disposed above the stacking unit 300 and above the uppermost sheet-shaped material Pu stacked on the stacking unit 300. The detection unit 600 is, for example, an area sensor, and a light emitting unit 600a that emits light and a light receiving unit 600b that receives light emitted from the light emitting unit 600a are disposed to face each other. In the present embodiment, as shown in FIG. 1, the light emitting unit 600a and the light receiving unit 600b are arranged to face each other so as to sandwich the sheet-like raw material Pu stacked on the stacking unit 300 in the X-axis direction. As shown in FIG. 3, the light emitting unit 600 a and the light receiving unit 600 b are arranged to face each other above the uppermost sheet-like material Pu stacked on the stacking unit 300 in a side view. The light emitting unit 600a is configured by, for example, an LED (Light Emitting Diode) light emitting element, a laser light emitting element, or the like, and the light receiving unit 600b is configured by a phototransistor, a photo IC, or the like. In FIG. 1, the detection unit 600 (the light emitting unit 600a and the light receiving unit 600b) is arranged in the Y axis direction, but may be arranged in the X axis direction, or both the Y axis direction and the X axis direction (two directions). ). In order to increase the abnormality detection accuracy, it is desirable to arrange in two directions. The detection unit 600 is connected to the control unit and is driven and controlled based on a predetermined program.

  Here, a specific detection method of the detection unit 600 will be described with reference to FIGS. 3 to 6. In the detection unit 600 of the present embodiment, the presence or absence of the sheet-like material Pu is detected in a state where at least a part of the sheet-like material Pu is moved to a predetermined height by the transport unit 400. Specifically, first, as shown in FIG. 3, the first to third arm portions 411 to 413 are appropriately driven so that the adsorption portion 430 is placed above the sheet-like raw material Pu stacked on the stacking portion 300. Move. Next, as shown in FIG. 4, the third arm portion 413 is driven to lower the adsorption portion 430 to the uppermost position of the sheet-like raw material Pu. Then, the suction mechanism is driven to adsorb the upper surface of the sheet-like raw material Pu to the suction pad 432 by negative pressure. Next, as shown in FIG. 5, the third arm portion 413 is driven to raise the suction portion 430 to a predetermined height. Specifically, the adsorption unit 430 (adsorbed sheet-shaped raw material Pu) is moved to a height that does not block light between the light emitting unit 600a and the light receiving unit 600b. At this time, light is emitted from the light emitting unit 600a, and the light receiving unit 600b outputs a signal corresponding to the amount of received light. In the example shown in FIG. 5, since the light is not blocked by the sheet-like raw material Pu moved to a predetermined height between the light emitting unit 600a and the light receiving unit 600b, a predetermined amount of received light can be obtained. In this case, the control unit determines that there is no other sheet-like material Pu below the adsorbed sheet-like material Pu, that is, there is no abnormality (normal) in the sheet-like material Pu to be conveyed. The sheet-shaped raw material Pu that is determined not to be abnormal is conveyed and stored in the second storage unit 800.

  On the other hand, as shown in FIG. 6, when the sheet-shaped raw material Pu positioned at the top of the stacking unit 300 is a sheet-shaped raw material Pu in which a plurality of sheets are bound by, for example, a staple M, a transport unit 400. When the uppermost sheet-shaped raw material Pu is moved to a predetermined height by the other sheet-shaped raw material Pu (from the uppermost), the uppermost sheet-shaped raw material Pu (the first sheet-shaped raw material Pu from the top) is moved. The second and subsequent sheets of raw material Pu) hang down. In this case, the sheet material Pu that hangs down is positioned between the light emitting unit 600a and the light receiving unit 600b and blocks light, so that the amount of light received by the light receiving unit 600b is reduced and a predetermined amount of light received cannot be obtained. In this case, the control unit determines that there is another sheet-like material Pu below the adsorbed sheet-like material Pu, that is, the sheet-like material Pu to be conveyed is abnormal (not normal). The sheet-shaped raw material Pu that has been determined to be abnormal is conveyed to and stored in the first storage unit 700. As described above, the sheet-like raw material Pu stacked on the stacking unit 300 is separated into a normal (recyclable) sheet-like raw material Pu and an abnormal (non-recyclable) sheet-like raw material Pu. Note that “unreproducible” here means that it is impossible to immediately regenerate, and even a sheet-like material determined to be abnormal can be regenerated by removing the staples of the stapler, etc. Can be a raw material.

  The first storage unit 700 stores the sheet-shaped raw material Pu that is determined to be abnormal by the detection unit 600 (including the control unit) when the detection unit 600 detects that the sheet-shaped material Pu is present. It is. In addition, the second storage unit 800 stores the sheet-shaped raw material Pu that is determined to be normal by the detection unit 600 (including the control unit) when the detection unit 600 detects that there is no sheet-shaped raw material Pu. To do. The 1st accommodating part 700 and the 2nd accommodating part 800 are box-shaped containers, for example. In the present embodiment, as shown in FIG. 1, the first storage unit 700 is parallel to the stacking unit 300 in the X-axis positive direction, and the second storage unit 800 is parallel to the stacking unit 300 in the X-axis negative direction. Are arranged. That is, the 1st accommodating part 700 and the 2nd accommodating part 800 are juxtaposed in the state which pinched | stacked the stacking part 300 in planar view. Thereby, the movement of the conveyance part 400 can be suppressed to the minimum, and the sheet-like raw material Pu can be separated efficiently.

  Next, the sheet-like raw material separation method will be described. The sheet-shaped raw material separation method of the present embodiment is a sheet in which the uppermost stacked sheet-shaped raw material is adhered and conveyed, and at least a part of the adhered sheet-shaped raw material is moved to a predetermined height. When the presence or absence of the sheet material is detected and the presence of the sheet material is detected, the sheet material is accommodated in the first accommodating portion. This will be specifically described below. In the present embodiment, a sheet material separation method according to the sheet material separation apparatus 10 will be described.

  FIG. 7 is a flowchart showing a sheet-shaped raw material separation method, and FIGS. 8 to 10 are schematic views showing the operation of the sheet-shaped raw material separation apparatus.

  First, in step S11, the sheet-like raw material Pu is adsorbed. Specifically, as shown in FIG. 8, the transport unit 400 is moved above the stacking unit 300, the third arm unit 413 is lowered, and the uppermost sheet-like material Pu stacked on the stacking unit 300 is moved. It is made to adsorb | suck to the adsorption | suction part 430 (refer FIG. 4).

  Next, in step S12, the adsorbed sheet-shaped raw material Pu is raised. Specifically, the adsorption unit 430 is moved to a predetermined height above the detection area of the detection unit 600 (between the light emitting unit 600a and the light receiving unit 600b) (see FIG. 5).

  Next, in step S13, the presence or absence of the sheet-like material Pu is detected in a state where the adsorption unit 430 (the adsorbed sheet-like material Pu) is moved to a predetermined height. Specifically, the detection unit 600 is driven to detect whether or not the sheet-shaped raw material Pu exists in the detection area of the detection unit 600. An output signal of the detection unit 600 corresponding to the amount of light received by the light receiving unit 600b is input to the control unit.

  Next, in step S14, it is determined whether or not there is a sheet-like material Pu below the adsorbed sheet-like material Pu. Specifically, the control unit determines that there is no sheet-like material Pu in the detection area if the amount of light received by the light receiving unit 600b is equal to or greater than a predetermined amount (NO), and detects if the amount of received light is less than the predetermined amount. It is determined that there is sheet-like material Pu in the area (YES). That is, when the adsorbed sheet-shaped raw material Pu is a material in which a plurality of sheet-shaped raw materials are spelled, the sheet-shaped raw material Pu hangs down and the sheet-shaped raw material Pu exists in the detection area. On the other hand, when the adsorbed sheet-shaped raw material Pu is one sheet-shaped raw material of a predetermined size, the sheet-shaped raw material Pu does not hang down to at least the detection area. The adsorbed sheet-shaped raw material Pu is, for example, a sheet of a size larger than a predetermined size is folded in half, and even if it looks like a sheet of a predetermined size, a part of it is in the sag detection area Will exist.

  When it is determined that there is a sheet-like raw material Pu (step S14: YES) (see FIG. 6), the process proceeds to step S15. In step S <b> 15, as shown in FIG. 9, the transport unit 400 is driven and moved toward the first storage unit 700, and the adsorbed sheet-shaped raw material Pu is stored in the first storage unit 700. Thereby, for example, a plurality of sheet-shaped raw materials Pu that are spelled with staples or the like of the stapler are accommodated in the first accommodating portion 700.

  On the other hand, when it is determined that there is no sheet material Pu (step S14: NO) (see FIG. 5), the process proceeds to step S16. In step S <b> 16, as illustrated in FIG. 10, the conveyance unit 400 is driven and moved to the second storage unit 800 side, and the adsorbed sheet-shaped raw material Pu is stored in the second storage unit 800. Thereby, a single (unbound) sheet-shaped raw material Pu of a predetermined size is accommodated in the second accommodating portion 800.

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

  It is possible to detect a sheet-like raw material Pu bound with a metal material such as a staple M or a clip of a stapler, or a sheet-like raw material Pu bound in a form other than a metal material such as a stapleless stapler or glue. Furthermore, it is possible to detect a sticky note or the like attached to the back surface of the suction surface of the adsorbed sheet-like raw material Pu. Thereby, the normal sheet-shaped raw material Pu and the abnormal sheet-shaped raw material Pu can be reliably separated.

(Second Embodiment)
Next, a second embodiment will be described. The sheet-shaped raw material sorting apparatus according to the present embodiment includes a stacking unit for stacking sheet-shaped raw materials, a transport unit for attaching and transporting the uppermost sheet-shaped raw material from the stacking unit, and at least a part of the sheet-shaped raw materials by the transport unit. When the sheet is moved to a predetermined height, the detection unit that detects the presence or absence of the sheet-like raw material, and when the detection unit detects that the sheet-like raw material is present, the sheet-like raw material is stored in the first storage unit. Device. Furthermore, in the state where at least a part of the sheet-shaped raw material is moved to a predetermined height by the conveying unit, an image acquisition unit that acquires an image of the sheet-shaped raw material, and an image of the sheet-shaped raw material acquired by the image acquisition unit And a determination unit that determines the state of the sheet-shaped raw material, and when the determination unit determines that the sheet-shaped raw material is in an abnormal state, the apparatus stores the sheet-shaped raw material in the first storage unit. is there. This will be specifically described below.

  FIG. 11 is a schematic perspective view showing the configuration of the sheet-shaped raw material sorting apparatus. As shown in FIG. 11, the sheet-like raw material sorting apparatus 10 a according to this embodiment includes a stacking unit 300, a transport unit 400, a detection unit 600, a first storage unit 700, and a second storage unit 800. A control unit (not shown) as a unit is provided. Further, the sheet-shaped raw material sorting apparatus 10a is provided with an image acquisition unit 900 that acquires the sheet-shaped raw material Pu. The configurations of the stacking unit 300, the transport unit 400, the detection unit 600, the first storage unit 700, the second storage unit 800, and the like are the same as the configurations according to the first embodiment, and thus the description thereof is omitted.

  The image acquisition unit 900 is an apparatus that acquires an image of the sheet-shaped raw material Pu, and acquires an image of the sheet-shaped raw material Pu that has been adsorbed by the transport unit 400 and moved from the stacking unit 300 to a predetermined height. The image acquisition unit 900 is, for example, a digital camera provided with an image sensor (for example, a CCD (Charge Coupled Device) or the like).

  The image acquisition unit 900 of this embodiment is disposed above the sheet-like raw material Pu stacked on the stacking unit 300 and further above the transport unit 400. The image acquisition unit 900 is configured to be able to acquire a planar view image (image of the adsorbed surface) of the sheet-like raw material Pu that has been adsorbed by the conveyance unit 400 from the stacking unit 300 and moved to a predetermined height. . Thereby, it becomes easy to focus only on the sheet-shaped raw material Pu to be determined, and an image of the sheet-shaped raw material Pu can be easily acquired. And the sheet-like raw material Pu of the size different from predetermined size, the torn sheet-like raw material Pu, etc. can be detected easily.

  The detection unit 600 is connected to the control unit and is driven and controlled based on a predetermined program. Then, the control unit determines the state of the sheet-shaped raw material Pu based on the image of the sheet-shaped raw material Pu acquired by the image acquisition unit 900. Examples of the method for determining the state of the sheet-shaped raw material Pu include whether or not the sheet-shaped raw material Pu has a predetermined size and whether or not the sheet-shaped raw material Pu is torn. Then, when the control unit determines that the sheet-shaped raw material Pu is in an abnormal state, the transport unit 400 is driven and the sheet-shaped raw material Pu is stored in the first storage unit 700.

  Next, the sheet-like raw material separation method will be described. The sheet-shaped raw material separation method of the present embodiment is a sheet in which the uppermost stacked sheet-shaped raw material is adhered and conveyed, and at least a part of the adhered sheet-shaped raw material is moved to a predetermined height. When the presence or absence of the sheet material is detected and the presence of the sheet material is detected, the sheet material is accommodated in the first accommodating portion. Further, an image of the sheet-like raw material is acquired in a state where at least a part of the sheet-like raw material is moved to a predetermined height, and the state of the sheet-like raw material is determined based on the acquired image of the sheet-like raw material. When it is determined that the sheet-shaped raw material is in an abnormal state, the sheet-shaped raw material is accommodated in the first accommodating portion. This will be specifically described below. In the present embodiment, a sheet material separation method for the sheet material separation apparatus 10a will be described.

  FIG. 12 is a flowchart showing a sheet-shaped raw material separation method. First, in step S21, the sheet-like raw material Pu is adsorbed. Specifically, the transport unit 400 is moved above the stacking unit 300, the third arm unit 413 is lowered, and the uppermost sheet-like material Pu stacked on the stacking unit 300 is adsorbed by the adsorbing unit 430 ( (See FIG. 4 and FIG. 8).

  Next, in step S22, the adsorbed sheet-shaped raw material Pu is raised. Specifically, the adsorption unit 430 is moved to a predetermined height above the detection area of the detection unit 600 (between the light emitting unit 600a and the light receiving unit 600b) (see FIG. 5).

  Next, in step S23, the presence / absence of the sheet-like material Pu is detected in a state where the adsorption unit 430 (the adsorbed sheet-like material Pu) is moved to a predetermined height. Specifically, the detection unit 600 is driven to detect whether or not the sheet-shaped raw material Pu exists in the detection area of the detection unit 600. An output signal of the detection unit 600 corresponding to the amount of light received by the light receiving unit 600b is input to the control unit.

  Next, in step S24, it is determined whether or not there is a sheet-like material Pu below the adsorbed sheet-like material Pu. Specifically, the control unit determines that there is no sheet-like material Pu in the detection area if the amount of light received by the light receiving unit 600b is equal to or greater than a predetermined amount (NO), and detects if the amount of received light is less than the predetermined amount. It is determined that there is sheet-like material Pu in the area (YES).

  When it is determined that there is a sheet-like raw material Pu (step S24: YES) (see FIG. 6), the process proceeds to step S25. In step S <b> 25, as shown in FIG. 9, the transport unit 400 is driven and moved toward the first storage unit 700, and the adsorbed sheet-shaped raw material Pu is stored in the first storage unit 700. Thereby, for example, a plurality of sheet-shaped raw materials Pu that are spelled with staples or the like of the stapler are accommodated in the first accommodating portion 700.

  On the other hand, when it is determined that there is no sheet-like material Pu (step S24: NO) (see FIG. 5), the process proceeds to step S26. In step S26, an image of the sheet-like raw material Pu that has been moved to the predetermined height in step S23 is acquired. Specifically, the image acquisition unit 900 is driven to acquire an image of the sheet-like raw material Pu. The acquired image data is transmitted to the control unit.

  Next, in step S27, the state of the sheet material Pu is determined. In the present embodiment, it is determined whether or not the sheet material Pu is in an abnormal state. For example, based on the image data of the sheet-like raw material Pu acquired by the image acquisition unit 900, the size of the sheet-like raw material Pu (whether it is a predetermined size), the presence or absence of tearing of the sheet-like raw material Pu, and the like are determined. . If the sheet-shaped raw material Pu has a size different from a predetermined size, or if the sheet-shaped raw material Pu is torn, or if the sheet-shaped raw material Pu has a stapler needle, the sheet-shaped raw material Pu is abnormal. It determines with it being in a state (YES).

  And when it determines with the sheet-like raw material Pu being in an abnormal state (step S27: YES), it transfers to step S25. In step S <b> 25, as shown in FIG. 9, the transport unit 400 is driven and moved toward the first storage unit 700, and the adsorbed sheet-shaped raw material Pu is stored in the first storage unit 700. Thereby, for example, the sheet-like raw material Pu having a size different from the predetermined size is accommodated in the first accommodating portion 700.

  On the other hand, when it is determined that the sheet-like raw material Pu is not abnormal (step S27: NO), the process proceeds to step S28. In step S <b> 28, the transport unit 400 is driven to move toward the second storage unit 800, and the adsorbed sheet-shaped raw material Pu is stored in the second storage unit 800. Thereby, a single (not spelled) sheet-shaped raw material Pu of a predetermined size is stored in the second storage unit 800.

  As mentioned above, according to the said embodiment, in addition to the effect of 1st Embodiment, the following effects can be acquired.

  In addition to separating the sheet-like raw material Pu and the like in which a plurality of sheets are bound by the detection unit 600 and the image acquisition unit 900, the sheet-like raw material Pu having a size different from the predetermined size or the torn sheet-like raw material Pu, Sheet material with stapler needles can be easily separated. Here, the sheet-like raw material Pu with the stapler needle includes one having the needle attached to one sheet-like raw material Pu.

(Third embodiment)
Next, the configuration of the used paper processing apparatus. The used paper processing apparatus is an apparatus having a sheet-shaped raw material sorting device and a crushing unit that crushes the sheet-shaped raw material supplied from the sheet-shaped raw material sorting device into a roughly crushed piece. This will be specifically described below.

  FIG. 13 is a schematic diagram showing the configuration of the used paper processing apparatus. As shown in FIG. 13, the used paper processing apparatus 200 includes a sheet-shaped raw material sorting apparatus 10 b and a crushing unit 12.

  The sheet-shaped raw material separating apparatus 10b includes a stacking unit 300 for stacking the sheet-shaped raw material Pu, a transport unit 400 for attaching and transporting the uppermost sheet-shaped raw material Pu from the stacking unit 300, and a sheet-shaped raw material Pu by the transport unit 400. A detection unit 600 that detects the presence or absence of the sheet-like raw material Pu in a state where at least a part of the raw material Pu is moved to a predetermined height, and a first storage unit 700 are provided. The detection unit 600 has the sheet-like raw material Pu. When this is detected, the sheet-shaped raw material Pu is stored in the first storage unit 700. Furthermore, the sheet-like raw material separation apparatus 10b includes a supply unit 801, and when the detecting unit 600 detects that there is no sheet-like raw material Pu, the sheet-like raw material Pu is conveyed to the supply unit 801. Note that the configuration of the stacking unit 300, the transport unit 400, the detection unit 600, the first storage unit 700, the control unit, and the like is the same as that in the first embodiment, and a description thereof is omitted.

  The supply unit 801 supplies the sheet-shaped raw material Pu to the crushing unit 12. The supply unit 801 includes a supply port 802. Thus, when the detection unit 600 detects that there is no sheet-like material Pu, the sheet-like material Pu is conveyed to the supply port 802 of the supply unit 801 and further conveyed from the supply port 802 toward the crushing unit 12. The The supply unit 801 may include at least one conveyance roller pair, and the sheet-shaped raw material P may be conveyed to the supply port 802 by the conveyance roller pair. In this case, since the separated normal sheet-like raw material is given to the supply unit 801, the sheet-like raw material can be sent to the supply port 802 without being double-fed. Since it is supplied, the load at the time of coarse crushing can be suppressed.

  The crushing part 12 cuts the sheet-shaped raw material Pu separated and supplied by the sheet-shaped raw material separation device 10 into air to make a fine piece. The shape and size of the strip is, for example, a strip of several cm square. The crushing unit 12 of the present embodiment has a crushing blade 14, and can cut the supplied sheet-like raw material with the crushing blade 14. As the crushing part 12, a shredder can be used, for example. A container 15 is disposed below the crushing unit 12, and the raw material (strips) cut by the crushing unit 12 is accommodated in the container 15.

  As mentioned above, according to the said embodiment, the following effects can be acquired.

  Only the normal sheet-shaped raw material Pu is put into the supply unit 801 by the sheet-shaped raw material separating apparatus 10b and cut into strips by the crushing unit 12. That is, for example, the sheet-shaped raw material Pu that is determined to be in an abnormal state including a stapler needle or the like is not supplied to the crushing unit 12. Therefore, damage to the crushing blade 14 of the crushing part 12 is suppressed, and the sheet-like raw material Pu can be cut efficiently.

(Fourth embodiment)
Next, the configuration of a sheet manufacturing apparatus. The sheet manufacturing apparatus includes a sheet-shaped raw material separation device, a roughing unit that crushes the sheet-shaped raw material supplied from the sheet-shaped raw material separation device into coarsely-crushed pieces, and a defibrating unit that defibrates the coarsely-crushed pieces into defibrated material. is a device which includes a sheet forming unit, the molding a sheet using at least part of the defibrated material.

  FIG. 14 is a schematic diagram illustrating the configuration of the sheet manufacturing apparatus 100 according to the present embodiment. As shown in FIG. 14, the sheet manufacturing apparatus 100 includes a sheet-shaped raw material sorting apparatus 10 b, a manufacturing unit 102, and a control unit 104. The manufacturing unit 102 manufactures a sheet. The manufacturing unit 102 includes a crushing unit 12, a defibrating unit 20, a sorting unit 40, a first web forming unit 45, a rotating body 49, a mixing unit 50, a depositing unit 60, and a second web forming unit. 70, a sheet forming portion 80, and a cutting portion 90.

  The sheet-shaped raw material separation device 10 b is a device that separates the sheet-shaped raw material Pu and supplies the sheet-shaped raw material Pu having no abnormality to the crushing unit 12 via the supply unit 801. In addition, since the structure of the sheet-shaped raw material separation apparatus 10b is the same as that of the structure of 3rd Embodiment, description is abbreviate | omitted (refer FIG. 13).

  The crushing unit 12 cuts the sheet-shaped raw material Pu supplied from the sheet-shaped raw material separation device 10b into air pieces into pieces. In addition, since the structure of the crushing part 12 is the same as that of 3rd Embodiment, description is abbreviate | omitted (refer FIG. 13). Then, the raw material (strips) cut by the crushing unit 12 is received by the hopper 1 and then transferred (conveyed) to the defibrating unit 20 via the pipe 2.

  The defibrating unit 20 defibrates the raw material (strips) cut by the crushing unit 12. Here, “defibration” means unraveling a raw material (a material to be defibrated) formed by binding a plurality of fibers into individual fibers. The defibrating unit 20 also has a function of separating substances such as resin particles, ink, toner, and a bleeding inhibitor adhering to the raw material from the fibers.

  What has passed through the defibrating unit 20 is referred to as “defibrated material”. In addition to the defibrated fibers that have been unraveled, the “defibrated material” includes resin particles (resins that bind multiple fibers together), ink, toner, etc. In some cases, additives such as colorants, anti-bleeding materials, and paper strength enhancing agents are included. The shape of the defibrated material that has been unraveled is a string shape or a ribbon shape. The unraveled defibrated material may exist in an unentangled state (independent state) with other undisentangled fibers, or entangled with other undisentangled defibrated material to form a lump. It may exist in a state (a state forming a so-called “dama”).

  The defibrating unit 20 defibrates in a dry manner in the atmosphere (in the air). Specifically, an impeller mill is used as the defibrating unit 20. The defibrating unit 20 has a function of generating an air flow that sucks the raw material and discharges the defibrated material. As a result, the defibrating unit 20 can suck the raw material together with the airflow from the introduction port 22 with the airflow generated by itself, defibrate, and transport the defibrated material to the discharge port 24. The defibrated material that has passed through the defibrating unit 20 is transferred to the sorting unit 40 via the tube 3. In addition, the airflow for conveying a defibrated material from the defibrating unit 20 to the sorting unit 40 may use an airflow generated by the defibrating unit 20, or an airflow generation device such as a blower is provided, May be used.

  The sorting unit 40 introduces the defibrated material defibrated by the defibrating unit 20 from the introduction port 42 and sorts the defibrated material according to the length of the fiber. As the selection unit 40, for example, a sieve is used. The sorting unit 40 has a net (filter, screen), fibers or particles smaller than the mesh size of the mesh (things that pass through the mesh, the first selection product), fibers larger than the mesh size of the mesh, Undefibrated pieces and lumps (those that do not pass through the net, second sort) can be separated. For example, the first selection is transferred to the mixing unit 50 via the pipe 7. The second selected item is returned to the defibrating unit 20 from the discharge port 44 through the pipe 8. Specifically, the sorting unit 40 is a cylindrical sieve that is rotationally driven by a motor. As the net of the sorting unit 40, for example, a metal net, an expanded metal obtained by extending a cut metal plate, or a punching metal in which a hole is formed in the metal plate by a press machine or the like is used.

  The first web forming unit 45 conveys the first sorted product that has passed through the sorting unit 40 to the mixing unit 50. The first web forming unit 45 includes a mesh belt 46, a stretching roller 47, and a suction unit (suction mechanism) 48.

  The suction unit 48 can suck the first sorted matter dispersed in the air through the opening (opening of the mesh) of the sorting unit 40 onto the mesh belt 46. The first selection is deposited on the moving mesh belt 46 to form the web V. The basic configurations of the mesh belt 46, the stretching roller 47, and the suction unit 48 are the same as the mesh belt 72, the stretching roller 74, and the suction mechanism 76 of the second web forming unit 70 described later.

  The web V is formed in a soft and swelled state containing a lot of air by passing through the sorting unit 40 and the first web forming unit 45. The web V deposited on the mesh belt 46 is put into the tube 7 and conveyed to the mixing unit 50.

  The rotating body 49 can cut the web V before the web V is conveyed to the mixing unit 50. In the illustrated example, the rotator 49 has a base 49a and a protrusion 49b protruding from the base 49a. The protrusion 49b has, for example, a plate shape. In the illustrated example, four protrusions 49b are provided, and four protrusions 49b are provided at equal intervals. When the base 49a rotates in the direction R, the protrusion 49b can rotate around the base 49a. By cutting the web V by the rotating body 49, for example, the fluctuation in the amount of defibrated material per unit time supplied to the deposition unit 60 can be reduced.

  The rotating body 49 is provided in the vicinity of the first web forming portion 45. In the illustrated example, the rotating body 49 is provided in the vicinity of the stretching roller 47a located on the downstream side in the path of the web V (next to the stretching roller 47a). The rotating body 49 is provided at a position where the protrusion 49b can come into contact with the web V and not in contact with the mesh belt 46 on which the web V is deposited. Thereby, it is possible to suppress the mesh belt 46 from being worn (damaged) by the protrusion 49b. The shortest distance between the protrusion 49b and the mesh belt 46 is, for example, not less than 0.05 mm and not more than 0.5 mm.

  The mixing unit 50 mixes the first sorted product that has passed through the sorting unit 40 (the first sorted product conveyed by the first web forming unit 45) and the additive containing resin. The mixing unit 50 includes an additive supply unit 52 that supplies the additive, a pipe 54 that conveys the first selected product and the additive, and a blower 56. In the illustrated example, the additive is supplied from the additive supply unit 52 to the pipe 54 via the hopper 9. The tube 54 is continuous with the tube 7.

  In the mixing unit 50, an air flow is generated by the blower 56, and the first selection product and the additive can be mixed and conveyed in the pipe 54. In addition, the mechanism which mixes a 1st selection material and an additive is not specifically limited, It may stir with the blade | wing which rotates at high speed, and uses rotation of a container like a V-type mixer. There may be.

  As the additive supply unit 52, a screw feeder as shown in FIG. 1 or a disk feeder (not shown) is used. The additive supplied from the additive supply unit 52 includes a resin for binding a plurality of fibers. At the time when the resin is supplied, the plurality of fibers are not bound. The resin melts when passing through the sheet forming portion 80 to bind a plurality of fibers.

  The resin supplied from the additive supply unit 52 is a thermoplastic resin or a thermosetting resin. For example, AS resin, ABS resin, polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylic resin, polyester resin, polyethylene terephthalate, Polyphenylene ether, polybutylene terephthalate, nylon, polyamide, polycarbonate, polyacetal, polyphenylene sulfide, polyether ether ketone, and the like. These resins may be used alone or in combination. The additive supplied from the additive supply unit 52 may be fibrous or powdery.

  In addition to the resin that binds the fibers, the additive supplied from the additive supply unit 52 prevents coloring of the fibers and the aggregation of the fibers depending on the type of sheet to be produced. An anti-aggregation agent for making the fibers and a flame retardant for making the fibers difficult to burn may be included. The mixture (mixture of the first selection product and the additive) that has passed through the mixing unit 50 is transferred to the deposition unit 60 via the pipe 54.

  The depositing unit 60 introduces the mixture that has passed through the mixing unit 50 from the introduction port 62, loosens the entangled defibrated material (fibers), and lowers it while dispersing it in the air. Furthermore, when the additive resin supplied from the additive supply unit 52 is fibrous, the deposition unit 60 loosens the entangled resin. Thereby, the deposition unit 60 can deposit the mixture on the second web forming unit 70 with good uniformity.

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

  It should be noted that the “sieving” of the depositing unit 60 may not have a function of selecting a specific object. That is, the “sieving” used as the depositing unit 60 means that the net is provided, and the depositing unit 60 may drop all of the mixture introduced into the depositing unit 60.

  The second web forming unit 70 deposits the passing material that has passed through the deposition unit 60 to form the web W. The second web forming unit 70 includes, for example, a mesh belt 72, a tension roller 74, and a suction mechanism 76.

  While moving, the mesh belt 72 accumulates the passing material that has passed through the opening of the accumulation unit 60 (the opening of the mesh). The mesh belt 72 is stretched by a stretching roller 74, and is configured to allow air to pass therethrough. The mesh belt 72 moves as the stretching roller 74 rotates. While the mesh belt 72 continuously moves, the passing material that has passed through the accumulation portion 60 is continuously piled up, whereby the web W is formed on the mesh belt 72. The mesh belt 72 is made of, for example, metal, resin, cloth, or non-woven fabric.

  The suction mechanism 76 is provided below the mesh belt 72 (on the side opposite to the accumulation unit 60 side). The suction mechanism 76 can generate an air flow directed downward (air flow directed from the accumulation unit 60 toward the mesh belt 72). By the suction mechanism 76, the mixture dispersed in the air by the deposition unit 60 can be sucked onto the mesh belt 72. Thereby, the discharge speed from the deposition part 60 can be increased. Furthermore, the suction mechanism 76 can form a downflow in the dropping path of the mixture, and can prevent the defibrated material and additives from being entangled during the dropping.

  As described above, the web W in a state where it contains a lot of air and is softly swollen is formed by passing through the deposition unit 60 and the second web forming unit 70 (web forming step). The web W deposited on the mesh belt 72 is conveyed to the sheet forming unit 80.

  In the illustrated example, a humidity control unit 78 that adjusts the humidity of the web W is provided. The humidity control unit 78 can adjust the amount ratio of the web W and water by adding water or water vapor to the web W.

  The sheet forming unit 80 forms the sheet S by pressurizing and heating the web W deposited on the mesh belt 72. In the sheet forming unit 80, by applying heat to the mixture of the defibrated material and the additive mixed in the web W, the plurality of fibers in the mixture are bound to each other via the additive (resin). Can do.

  The sheet forming unit 80 includes a pressurizing unit 82 that pressurizes the web W, and a heating unit 84 that heats the web W pressed by the pressurizing unit 82. The pressurizing unit 82 includes a pair of calendar rollers 85 and applies pressure to the web W. The web W is pressed to reduce its thickness, and the density of the web W is increased. As the heating unit 84, for example, a heating roller (heater roller), a hot press molding machine, a hot plate, a hot air blower, an infrared heater, or a flash fixing device is used. In the illustrated example, the heating unit 84 includes a pair of heating rollers 86. By forming the heating unit 84 as the heating roller 86, the sheet S is formed while the web W is continuously conveyed as compared with the case where the heating unit 84 is configured as a plate-like pressing device (flat plate pressing device). Can do. Here, the calendar roller 85 (pressure unit 82) can apply a pressure higher than the pressure applied to the web W by the heating roller 86 (heating unit 84). The number of calendar rollers 85 and heating rollers 86 is not particularly limited.

  The cutting unit 90 cuts the sheet S formed by the sheet forming unit 80. In the illustrated example, the cutting unit 90 includes a first cutting unit 92 that cuts the sheet S in a direction that intersects the conveyance direction of the sheet S, and a second cutting unit 94 that cuts the sheet S in a direction parallel to the conveyance direction. ,have. The second cutting unit 94 cuts the sheet S that has passed through the first cutting unit 92, for example.

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

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

  The sheet-shaped raw material Pu having no abnormality is supplied to the crushing unit 12 from the sheet-shaped raw material sorting device 10b. That is, the sheet-shaped raw material sorting apparatus 10b functions as a sheet feeding unit of the sheet manufacturing apparatus 100. In this case, the sheet-shaped raw material Pu having an abnormality such as double feeding of the sheet-shaped raw material Pu is separated at a stage before being fed to the crushing unit 12. For this reason, only normal sheet-shaped raw material Pu is supplied to the crushing unit 12. Accordingly, it is possible to manufacture the sheet S with reduced conveyance failure and the like, with a stable supply amount of the sheet-like raw material Pu, and thus high basis weight uniformity.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and improvements can be added to the above-described embodiment. A modification will be described below. Modifications may be combined.

  (Modification 1) In the first and second embodiments, the second housing portion 800 is disposed, but the present invention is not limited to this configuration. For example, it is good also as a supply part for replacing with the 2nd accommodating part 800 and supplying a sheet-like raw material to various apparatuses. And when the detection part 600 detects that there is no sheet-like raw material Pu, the said sheet-like raw material Pu is conveyed to a supply part. If it does in this way, it will become possible to send reusable sheet-like raw material Pu directly to a supply part, and can improve conveyance efficiency.

  (Modification 2) In 3rd Embodiment, although the supply part 801 was provided with the supply port 802 and was the structure directly conveyed from the supply port 802 to the crushing part 12, it is not limited to this. For example, the supply unit may be a stacking unit (feed tray) for feeding the sheet-shaped raw material Pu toward the crushing unit 12. In this way, the sheet-shaped raw material Pu once separated by the sheet-shaped raw material separation device 10b is supplied to the roughing unit 12 from the state of being stacked on the stacking unit (feed tray), so that the sheet to the roughing unit 12 is supplied. It is possible to easily manage the supply amount of the raw material Pu.

  (Modification 3) Although the transport unit 400 of the above embodiment is a horizontal multi-joint robot driven by four axes, it is not limited to this configuration. For example, a three-axis drive conveyance unit may be used. In this case, it may be configured to be able to be driven in the vertical direction, the horizontal direction, and the rotation direction. Furthermore, the conveyance part which can drive-control 5 axes or more may be sufficient. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 4) In the detection unit 600 of the above embodiment, the light emitting unit 600a and the light receiving unit 600b are arranged to face each other so as to correspond to the two sides of the sheet-like raw material Pu stacked on the stacking unit 300. It is not limited to the configuration. Furthermore, it is good also as a structure which has similarly arrange | positioned the light emission part 600a and the light-receiving part 600b in the position corresponding to the other two sides of the sheet-like raw material Pu. In this way, the detection accuracy of the presence or absence of the sheet-like raw material Pu can be further improved.

  (Modification 5) The stacking unit 300 of the above embodiment may be provided with an air blow for blowing air toward the stacked sheet-like raw material Pu. In this way, for example, when adsorbing and lifting the sheet-shaped raw material Pu loaded in the transport unit 400, the uppermost sheet-shaped raw material Pu is reliably removed from the loaded sheet-shaped raw material Pu by air blow air. Can be separated.

  (Modification 6) In the above embodiment, the adsorbing unit 430 adsorbs the sheet-like material Pu by sucking air, but the present invention is not limited to this. For example, an adhesive part that adheres the sheet-like raw material Pu by an adhesive force, an adhesive part that adheres the sheet-like raw material Pu by an adhesive force, or the like may be used. Even if it does in this way, the effect similar to the said effect can be acquired.

  DESCRIPTION OF SYMBOLS 10,10a, 10b ... Sheet-like raw material separation apparatus, 12 ... Roughing part, 20 ... Defibration part, 80 ... Sheet forming part, 100 ... Sheet manufacturing apparatus, 200 ... Used paper processing apparatus, 300 ... Loading part, 400 ... Conveyance , 600 ... detection unit, 600a ... light emitting unit, 600b ... light receiving unit, 700 ... first storage unit, 800 ... second storage unit, 801 ... supply unit, 802 ... supply port, 900 ... image acquisition unit.

Claims (8)

A stacking portion for stacking a sheet material,
A transport unit for transporting the uppermost sheet-like raw material from the stacking unit;
In a state where at least a part of the sheet-shaped raw material is moved to a predetermined height by the transport unit, a detection unit that detects the presence or absence of the sheet-shaped raw material,
When the detection unit detects that a sheet material is present, the sheet material is stored in the first storage unit. The sheet material sorting apparatus according to claim 1,
The sheet-shaped raw material sorting apparatus, wherein the detection unit is disposed above the stacking unit and above the uppermost sheet-shaped raw material stacked on the stacking unit. The sheet material sorting apparatus according to claim 1 or claim 2,
When the detection unit detects that there is no sheet-like raw material, the sheet-like raw material sorting device stores the sheet-like raw material in the second storage unit. In the sheet-like raw material separation apparatus according to claim 1 or 2,
When the detection unit detects that there is no sheet-like material, the sheet-like material sorting device conveys the sheet-like material to a supply unit. In the sheet-like raw material separation device according to any one of claims 1 to 4,
An image acquisition unit that acquires an image of the sheet-shaped raw material in a state where at least a part of the sheet-shaped raw material is moved to a predetermined height by the transport unit;
A determination unit that determines the state of the sheet-shaped raw material based on the image of the sheet-shaped raw material acquired by the image acquisition unit,
When the determination unit determines that the sheet material is in an abnormal state, the sheet material is stored in the first storage unit. And the sheet-shaped raw material sorting apparatus according to claim 4,
A used paper processing apparatus, comprising: a crushing unit that crushes a sheet-shaped raw material supplied from the sheet-shaped raw material sorting device into a coarsely crushed piece. And the sheet-shaped raw material sorting apparatus according to claim 4,
A crushing unit that crushes the sheet-shaped raw material supplied from the sheet-shaped raw material separation device into a coarsely-crushed piece,
And defibrating unit for defibrating the crude debris in the defibrated material,
And a sheet forming unit that forms a sheet using at least a part of the defibrated material. Adhering and transporting the uppermost sheet material loaded,
In the state where at least a part of the attached sheet-like raw material is moved to a predetermined height, the presence or absence of the sheet-like raw material is detected,
When it is detected that there is a sheet-shaped raw material, the sheet-shaped raw material is stored in the first storage portion.

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