JP2005170649A - Paper stacking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper stacking device capable of securely and stably stacking paper. <P>SOLUTION: This paper stacking device 1 comprises an impeller 10 accepting and storing the paper P carried through a carrying route 3 between vanes during the rotation. A first sensor 21 detecting the passing of the paper and a second sensor 22 detecting that the edge of the paper reaches a stopper 13 are installed in the carrying route 3 before the impeller 10. After the passing of the paper is detected by the first sensor 21, if the passing of the paper is not detected by the second sensor 22 after a specified time is elapsed, the stacking is determined to be defective and the device is stopped. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a paper sheet stacking apparatus that decelerates paper sheets transported through a transport path with an impeller and stacks them in a stacking unit.

  2. Description of the Related Art Conventionally, as a paper sheet stacking apparatus, an apparatus that stacks a plurality of paper sheets taken out on a conveyance path for each type is known (for example, see Patent Document 1). This apparatus has a plurality of impellers arranged along the conveyance path, and decelerates paper sheets via these impellers and accumulates them in a predetermined stacking unit.

  At this time, the control unit that controls the operation of the apparatus monitors the conveyance timing of all the sheets conveyed on the conveyance path, and the rotation speed of the impeller according to the timing when the sheets arrive at each impeller. To adjust.

However, the above-described conventional stacking apparatus monitors the state of each paper sheet until it reaches the impeller, but does not know the state of the subsequent paper sheet, and the paper sheet collides with the blade. In some cases, a skew occurs or the blade is not properly received in the impeller, causing a jam. As described above, when skew or jam occurs in a paper sheet, there is a problem in that a stacking failure occurs in a subsequent stacking unit, which adversely affects a subsequent processing unit.
JP 2001-316013 A

  An object of the present invention is to provide a paper sheet stacking apparatus that can stack paper sheets reliably and stably.

  In order to achieve the above object, a paper sheet stacking apparatus according to the present invention includes an impeller that receives and rotates paper sheets conveyed through a conveyance path between a plurality of blades curved along the rotation direction. A first detection unit that detects paper sheets received by the impeller, a second detection unit that detects that paper sheets are normally received by the impeller, and paper received by the impeller A scraping member that scrapes leaves, a stacking unit that stacks paper sheets scraped by the scraping member, and a point in time after detecting the paper sheets via the first detection unit, A control unit that determines a stacking failure and stops the apparatus when it is not detected that the paper sheet has been normally received by the impeller via the second detection unit.

  In addition, the paper sheet stacking apparatus of the present invention receives and rotates a paper sheet conveyed through a conveyance path between a plurality of blades curved in the rotation direction, and the impeller. A scraping member that scrapes the accepted paper sheets, a stacking unit that stacks the paper sheets scraped by the scraping member, a state detection unit that detects the state of the paper sheets stacked in the stacking unit, A control unit that stops the apparatus when a paper sheet stacking failure is detected via the state detection unit.

  Furthermore, the paper sheet stacking apparatus of the present invention receives a paper sheet conveyed through a conveyance path between a plurality of blades curved along the rotation direction, and rotates the impeller. A first detection unit that detects accepted paper sheets, a second detection unit that detects that the paper sheets are normally received by the impeller, and a scraping that scrapes out the paper sheets received by the impeller A member, a stacking unit that stacks the paper sheets scraped by the scraping member, a state detection unit that detects a state of the paper sheets stacked in the stacking unit, and a sheet via the first detection unit When a certain period of time has elapsed since the detection of the leaves, if it is not detected that the paper sheets are normally received by the impeller via the second detection unit, a stacking failure is determined. Through the first control unit for stopping the apparatus and the state detection unit. When detecting the integrated defective sheets, and includes a second control unit for stopping the device.

  In the above invention, the state of the paper sheet after reaching the impeller is monitored to prevent the accumulation failure. For this reason, it has become possible to accumulate paper sheets reliably and stably.

  Since the paper sheet stacking apparatus of the present invention has the configuration and operation as described above, it is possible to stack paper sheets reliably and stably.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 schematically shows a structure of a main part of a paper sheet stacking apparatus 1 (hereinafter simply referred to as a stacking apparatus 1) according to an embodiment of the present invention. In FIG. 1, the detailed structure of the impeller 10 is not shown for easy understanding. Instead, FIG. 2 shows in detail the structure of the impeller 10 in a perspective view.

  As shown in FIG. 1, the stacking apparatus 1 receives and rotates a plurality of paper sheets P that are continuously conveyed in the direction of arrow T in the figure via a conveyance path 3 defined by the conveyance belt 2. Thus, there is an impeller 10 that decelerates the paper sheets P and stores them one by one. A first sensor 21 (on the conveyance path 3 upstream of the impeller 10 along the conveyance direction of the paper sheet P and immediately before the impeller 10 for detecting the paper sheet P received by the impeller 10 ( A first detection unit) is provided.

  The first sensor 21 has a light emitting unit and a light receiving unit in a positional relationship across the conveyance path 3, and receives light emitted from the light emitting unit by the light receiving unit. That is, the passage of the paper sheet P is detected when the light beam emitted from the light emitting unit is blocked by the paper sheet P conveyed through the conveyance path 3 and is not received by the light receiving unit. More specifically, when the sensor output changes from light to dark, it detects that the leading edge of the paper sheet P has reached, and when the sensor output changes from dark to light, the trailing edge of the paper sheet P in the transport direction. Detects that has passed.

  As shown in FIG. 2, the impeller 10 has a plurality of blades 12 extending from the rotation shaft 11 so as to be curved in a generally radial manner. Each blade 12 is curved along the rotational direction of the impeller 10, and the tip ends at the outer periphery of the impeller 10. The impeller 10 receives the leading end in the transport direction of the paper sheet P sent through the transport path 3 between the front ends of the blades 12 in the middle of rotation, and puts the paper sheet P between the blades 12. Accommodate.

  The impeller 10 also has a stopper 13 that locks the leading edge of the paper sheet P received between the blades 12 at a predetermined position. Furthermore, the impeller 10 has a curved scraping plate 14 (scraping member) that scrapes the paper sheet P, the tip of which is locked by the stopper 13, from between the blades 12.

  In the vicinity of the scraping plate 14, a second sensor 22 (second detection unit) that detects that the leading edge of each paper sheet P received between the blades 12 is locked by the stopper 13 is provided. The second sensor 22 also has the same structure and function as the first sensor 21. The second sensor 22 detects that the paper sheet P has been normally received by the impeller 10 by detecting that the leading edge of the paper sheet P has reached the stopper 13.

  Below the impeller 10, a stacking unit 15 that stacks the paper sheets P scraped by the scraping plate 14 is provided. The stacking unit 15 includes a placement plate 16 on which the paper sheet P is placed. A plurality of marks M (see FIGS. 5 to 8) described later are formed on the upper surface 16a on which the placement plate 16 places the paper sheet P. An obliquely upper portion of the placement plate 16 in the drawing is used to detect the accumulation state of the paper sheets accumulated on the placement plate 16 and to detect the mark M formed on the upper surface 16a of the placement plate 16. A camera 17 (state detection unit) is provided.

  Further, in the vicinity of the stacking unit 15, there is provided a sealing device 18 that seals a predetermined number of sheets P placed and stacked on the mounting plate 16 with a paper strip.

  FIG. 3 is a block diagram of a control system for controlling the operation of the integrated device 1 having the above structure. The control unit 30 of the stacking apparatus 1 includes a CPU 31 (control unit), a timer unit 32, an impeller control unit 33, a sensor control unit 34, an image monitoring control unit 35, and a sealing device control unit 36.

  The timer unit 32 has a plurality of timers 32a, 32b, 32c... According to the number of paper sheets P that can be accommodated by the impeller 10 at a time. Each of the timers 32a, 32b, 32c... Has a time from when the paper P is detected by the first sensor 21 to when it is detected by the second sensor 22 with respect to all the paper P sent to the impeller 10. Each clocks.

  The impeller control unit 33 controls the impeller accumulation device 37 that rotates the impeller 10. The sensor control unit 34 controls the first and second sensors 21 and 22. The image monitoring control unit 35 controls the image monitoring device 38 (state detection unit) connected to the camera 17. The sealing device control unit 36 controls the operation of the sealing device 18.

The integrated device 1 having the above structure operates as follows.
First, the paper sheet P conveyed through the conveyance path 3 is detected by the first sensor 21 and then accommodated in the impeller 10. The paper sheet P normally accommodated in the impeller 10 is detected by the second sensor.

  Then, the paper sheets P accommodated in the impeller 10 are scraped out by the scraping plate 14 waiting at a predetermined position, and are stacked on the mounting plate 16 of the stacking unit 15. When a predetermined number of paper sheets P are stacked on the mounting plate 16, a predetermined number of paper sheets P are sealed by the sealing device 18, and a bundle of paper sheets P is carried out of the apparatus 1. The

  By the way, the stacking apparatus 1 detects the stacking abnormality of the paper sheets P and stops the apparatus 1 by the following three methods.

  First, the time from detection of each paper sheet P sent to the impeller 10 via the conveyance path 3 by the first sensor 21 to detection of the paper sheet P by the second sensor 22 is determined for each paper sheet. The timers 32a, 32b, 32c,. Then, when the CPU 31 determines that this time is out of the preset time range, it determines an accumulation failure and stops the apparatus 1.

  In other words, when the second sensor 22 does not detect the paper sheet P after a certain time has elapsed since the first sensor 21 detected the paper sheet P, the paper sheet P is moved from the first sensor 21 to the first sensor 21. It is considered that some sort of conveyance abnormality has occurred in the paper sheet P while being conveyed to the two sensors 22. As the conveyance abnormality, for example, a case where the paper sheet P collides with the blade 12 to cause a skew or the paper sheet P is bent or the like may be considered. In this case, even if the paper sheet P is scraped out by the scraping plate 14, there is a high possibility that the paper sheet P will not be accumulated on the mounting plate 16 in a normal state. For this reason, in such a case, the apparatus 1 is stopped to prevent an accumulation failure, and an abnormal bundle due to the accumulation failure is prevented in advance.

  In the present embodiment, since the second sensor 22 is disposed in the vicinity of the portion where the scraping plate 14 and the stopper 13 intersect, it detects that the leading end of the paper sheet P in the transport direction has not reached the stopper 13. In such a state, the case scraped by the scraping plate 14 can be detected.

  Secondly, the camera 17 disposed above the stacking unit 15 photographs the paper sheets P stacked on the placing plate 16 to monitor the stacking state of the paper sheets P, and the CPU 31 monitors the paper sheets P. The apparatus 1 is stopped when an accumulation failure is detected.

  As shown in FIG. 4A, when the paper sheets P are normally accumulated on the placement plate 16, the length along the longitudinal direction of the paper sheets P is equal to the length of one paper sheet P. In addition to being substantially the same, two edges along the short direction of the paper sheet P are detected.

  On the other hand, as shown in FIG. 4B, when the uppermost paper sheet P in the stacking direction is shifted in the longitudinal direction with respect to the other stacked paper sheets P, an image taken by the camera 17 is displayed. Therefore, the length of the paper sheet P is longer than the length of one sheet, and three edge sides are detected. Further, as shown in FIG. 4C, when one of the accumulated paper sheets P protrudes and is accumulated, similarly, the length of the paper sheet P is longer than one sheet. In addition, three end edges are detected. Furthermore, as shown in FIG. 4D, when one of the stacked paper sheets P is folded, the length of the paper sheet P is substantially the same as that of one sheet, but the edge Will be detected.

  That is, when the length of the accumulated paper sheets P along the longitudinal direction exceeds the length of one sheet or more, or more than three edges along the short direction of the paper sheets P When it is detected, the CPU 31 determines that the paper sheet P is not properly stacked and stops the apparatus 1.

  Third, immediately after the paper sheet P on the placement plate 16 is sealed by the sealing device 18, the upper surface 16a of the placement plate 16 is photographed by the camera 17, and a plurality of marks M formed in advance on the upper surface 16a. When all the marks M cannot be detected, the CPU 31 determines that the accumulation is abnormal and stops the apparatus 1.

  In the present embodiment, as shown in FIG. 5, five star marks M are formed on the upper surface of the mounting plate 16. FIG. 6 shows a captured image in a state where the paper sheet P is not placed on the upper surface 16 a of the placement plate 16. According to this, it can be seen that star-shaped marks are detected at the four corners and the center of the mounting plate 16.

  On the other hand, for example, as shown in FIG. 7, when one folded sheet P is placed, in the photographed image shown in FIG. Mark M is partially hidden by the paper sheet P and detected, and not all marks M are detected. In such a case, after sealing, the CPU 31 determines that the paper sheet P remains undesirably on the placement plate 16 and stops the apparatus 1. Accordingly, it is possible to prevent a problem that the remaining paper sheet P is mixed and sealed with the next paper sheet P to be accumulated.

  As described above, according to the present invention, after the paper sheet P transported through the transport path 3 is sent to the impeller 10, the state of the paper sheet P is monitored to detect a stacking abnormality. Therefore, compared with the case where only the state of the paper sheets before the impeller 10 is monitored as in the prior art, the paper sheets P can be more reliably and stably accumulated.

  In particular, in the present invention, since it is detected that the leading edge of each paper sheet P has reached the stopper 13 and each paper sheet P is normally stored in the impeller 10, In addition to problems such as skew and folding, it can be detected that each paper sheet P is normally accommodated in the impeller 10, and the paper sheets can be more reliably and stably accumulated.

  In addition, the camera 17 disposed above the stacking unit 15 can monitor the stacking state of the sheets P stacked on the mounting plate 16 and undesirably remain on the mounting plate 16. It is possible to detect the presence of the class P, and the single camera 17 can detect the accumulation abnormality from different angles, and the sheets P can be more reliably and stably accumulated.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above. Furthermore, you may combine the component covering different embodiment suitably.

Schematic which shows the structure of the principal part of the paper sheet stacking apparatus which concerns on embodiment of this invention. The schematic perspective view which shows the impeller integrated in the stacking device of FIG. FIG. 2 is a block diagram of a control system that controls the operation of the integrated device of FIG. 1. The figure for demonstrating the method to detect the stacking failure of paper sheets. The perspective view which shows the mounting board in the state in which paper sheets are not mounted. The figure which shows the example of an image which image | photographed the mounting board of FIG. The perspective view which shows the mounting board in the state in which the folded paper sheets are mounted. The figure which shows the example of an image which image | photographed the mounting board of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Paper sheet stacking device, 2 ... Conveyance belt, 3 ... Conveyance path, 10 ... Impeller, 12 ... Blade, 13 ... Stopper, 14 ... Scraping plate, 15 ... Stacking part, 16 ... Mounting plate, 17 ... Camera , 18 ... sealing device, 21 ... first sensor, 22 ... second sensor, 31 ... CPU, 32 ... timer unit, P ... paper sheet.

Claims (7)

An impeller that receives and rotates paper sheets conveyed through a conveyance path between a plurality of blades curved along the rotation direction;
A first detector for detecting paper sheets accepted by the impeller;
A second detection unit for detecting that the paper sheet has been normally received by the impeller;
A scraping member that scrapes paper sheets received by the impeller;
A stacking unit for stacking the paper sheets scraped by the scraping member;
When a certain amount of time has passed since the paper sheet was detected via the first detection unit, the paper sheet was detected by the impeller through the second detection unit. If not, a control unit that determines the accumulation failure and stops the device,
A paper sheet stacking apparatus comprising: The impeller has a stopper for locking the front end of the received paper sheet at a predetermined position,
The second detection unit detects that the leading edge of a paper sheet received by the impeller has reached the stopper and detects that the paper sheet has been normally received. 2. The paper sheet stacking apparatus according to 1. An impeller that receives and rotates paper sheets conveyed through a conveyance path between a plurality of blades curved along the rotation direction;
A scraping member that scrapes paper sheets accepted by the impeller;
A stacking unit for stacking the paper sheets scraped by the scraping member;
A state detection unit for detecting the state of the paper sheets accumulated in the accumulation unit;
A control unit for stopping the apparatus when a paper sheet stacking failure is detected via the state detection unit;
A paper sheet stacking apparatus comprising: The stacking unit has a placement plate having a mark on the surface on which the paper sheet is placed,
4. The paper sheet stacking apparatus according to claim 3, wherein the state detecting unit detects that the paper sheet is not placed on the placement plate based on the detection of the mark. . An impeller that receives and rotates paper sheets conveyed through a conveyance path between a plurality of blades curved along the rotation direction;
A first detector for detecting paper sheets accepted by the impeller;
A second detection unit for detecting that the paper sheet has been normally received by the impeller;
A scraping member that scrapes paper sheets received by the impeller;
A stacking unit for stacking the paper sheets scraped by the scraping member;
A state detection unit for detecting the state of the paper sheets accumulated in the accumulation unit;
When a certain amount of time has passed since the paper sheet was detected via the first detection unit, the paper sheet was detected by the impeller through the second detection unit. If not, a first control unit that determines an integration failure and stops the device;
A second control unit that stops the apparatus when a paper sheet stacking failure is detected via the state detection unit;
A paper sheet stacking apparatus comprising: The impeller has a stopper for locking the front end of the received paper sheet at a predetermined position,
The second detection unit detects that the leading edge of a paper sheet received by the impeller has reached the stopper and detects that the paper sheet has been normally received. 5. The paper sheet stacking apparatus according to 5. The stacking unit has a placement plate having a mark on the surface on which the paper sheet is placed,
The paper sheet according to claim 5 or 6, wherein the state detection unit detects that the paper sheet is not placed on the placement plate based on the detection of the mark. Integrated device.

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