JP5487035B2 - Paper sheet thickness detection device and bill handling device - Google Patents

Description

  The present invention relates to a paper sheet thickness detection device and a bill handling device. For example, the present invention relates to a paper sheet thickness detection device for detecting a tape, paper, a sticker or the like affixed to banknotes, securities, stamps and checks.

  In an apparatus for handling banknotes such as a banknote handling apparatus or a vending machine provided in an automatic teller machine, it is important to discriminate banknotes altered with tape, paper, etc., and a banknote discriminating apparatus for that purpose is provided. ing.

  There exists a thing of patent document 1 as a banknote discrimination | determination apparatus which discriminate | determines the banknote etc. which were transformed with such a tape, paper, etc. The paper sheet thickness detection device described in this publication includes a reference roller that is rotationally driven, a detection roller that is driven and rotated by connecting an outer ring and a rotating shaft between the outer ring and a rotation shaft by pressing the outer ring against the reference roller. A displacement detection sensor for detecting the displacement of the outer ring of the detection roller is provided, and a sheet or the like is conveyed between the reference roller and the detection roller to detect and exclude the tape or the like from the displacement amount of the outer ring.

  Further, the paper sheet detection device of Patent Document 2 describes a pressing roller that contacts the detection roller and presses the detection roller in the direction of the reference roller.

Japanese Utility Model Publication No. 6-49442 Japanese Patent Laid-Open No. 7-144792

  In the apparatus described in Patent Document 1, when a paper sheet passes between the reference roller and the detection roller, the space between the outer ring and the rotation shaft of the detection roller is configured by a soft elastic member, so that the detection roller and the paper sheet There is a problem that the detection roller is inclined or meanders in the conveying direction due to a kind of frictional resistance. Thereby, since the distance between the detection roller and the displacement detection sensor changes, there is a problem that the thickness of the paper sheet or the tape cannot be accurately detected.

  In the device described in Patent Document 2, the pressing roller that presses the detection roller suppresses vibration in the vertical direction of the detection roller by its own weight or pressing force. In addition, when paper sheets pass between the reference roller and the detection roller, there is no assumption or disclosure of a problem that the detection roller is inclined or meanders in the conveyance direction. Accordingly, no consideration is given to the point of preventing tilting in the transport direction or the point of preventing meandering. Further, it is not considered that a large number of detection rollers can be arranged in the rotation axis direction.

  The present invention has been made to solve the above-mentioned problems, and prevents the inclination and meandering of the detection roller in the conveying direction, and the thickness of the paper sheet that can accurately detect the thickness of the paper sheet or tape. An object of the present invention is to provide a height detection device.

  In order to solve the above problems, for example, the configuration described in the claims is adopted.

  The present application includes a plurality of means for solving the above-described problems. For example, in the first configuration, a meandering prevention roller that rotates in contact with an outer ring of the plurality of detection rollers is provided. To do. Thereby, there is an effect of preventing the inclination or meandering of the conveying direction of the detection roller. Further, there is an effect that the detection roller can be prevented from jumping by the frictional resistance with the meandering prevention roller when the paper sheet is caught between the reference roller and the detection roller. The meandering prevention roller is disposed, for example, at substantially the same height as the rotation center of the plurality of detection rollers or above the plurality of displacement detection sensors that detect the displacement of each detection roller. For example, the meandering prevention roller preferably has a structure having higher rigidity than the plurality of detection rollers.

  In the second configuration, the meandering prevention roller is provided with convex roller portions at regular intervals, and the convex roller portion is inserted into the gap between the adjacent detection rollers, It rotates while contacting the side surface of the convex roller part and the side surface of the outer ring of the detection roller. Thereby, there is an effect of preventing the inclination or meandering of the conveying direction of the detection roller. Further, there is an effect that the detection roller can be prevented from jumping by the frictional resistance with the meandering prevention roller when the paper sheet is caught between the reference roller and the detection roller.

  In the third configuration, the meandering prevention rollers are arranged on both sides of the outer ring of the detection roller. Since there are two contact points between the meandering prevention roller and the outer ring of the detection roller, the effect of preventing the inclination and meandering of the detection roller in the conveying direction is improved. In addition, the effect of suppressing the jumping of the detection roller when the paper sheet is caught between the reference roller and the detection roller by the resistance force with the meandering prevention roller is improved.

  In the fourth configuration, the rotational speed of the outer periphery of the meandering prevention roller is different from the rotational speed of the outer periphery of the detection roller. Thereby, the cleaning effect which peels off the paper dust stuck on the detection roller is improved.

  Furthermore, by applying the paper sheet thickness detection device of the present invention to a bill handling device, it is possible to provide a bill handling device that can distinguish bills transformed with tape, paper, etc. with high accuracy.

  According to the present invention, the thickness of a paper sheet can be detected with high accuracy over the entire surface of the paper sheet. It can be applied to an automatic cash handling apparatus, etc., and can detect bills transformed with double feed, tape, paper, etc. with two or more bills overlapping with high accuracy.

1 shows an embodiment of a paper sheet thickness detection apparatus according to the present invention. The structure which looked at the thickness detection apparatus of the paper sheet of FIG. 1 from the top is shown. The structure which looked at the thickness detection apparatus of the paper sheet of FIG. 1 from the side is shown. 1 shows a configuration in the case where there is no meandering prevention roller in the configuration of FIG. Another embodiment of the sheet thickness detection apparatus of the present invention is shown. Another embodiment of the sheet thickness detection apparatus of the present invention is shown. Another embodiment of the sheet thickness detection apparatus of the present invention is shown. The structure which looked at the thickness detection apparatus of the paper sheet of FIG. 7 from the side is shown. It is a side view which shows the banknote handling apparatus which concerns on the 5th Embodiment of this invention.

  Hereinafter, embodiments will be described with reference to the drawings.

  One embodiment of the sheet thickness detecting apparatus of the present invention will be described with reference to FIGS. FIG. 1 is a bird's-eye view showing a substantially entire configuration of a paper sheet thickness detection apparatus. FIG. 2 shows the configuration of FIG. 1 viewed from above. FIG. 3 shows the configuration of FIG. 1 viewed from the side. FIG. 4 shows a configuration when the meander prevention roller 5 is not provided in the configuration of FIG.

  The sheet thickness detecting device 1 shown in FIG. 1 includes reference rollers 11, 12, and 13 provided on the rotary shaft 10 by transmitting a rotational force to a gear 29 in FIG. 2 by a rotation drive mechanism (not shown). The rotating roller 2, the detecting roller 6, 7, 8 provided on the rotating shaft 14 is pressed against the reference rollers 11, 12, 13 and the driven roller 3, and the roller 27 provided on the rotating shaft 26 are detected. Eddy current displacement that detects the movement of the meandering prevention roller 5 that rotates in contact with or pressed against the rollers 6, 7, 8 and the detection rollers 6, 7, 8 that move upward according to the thickness of the paper 4 It comprises displacement detection sensors 18, 19, 20, 21, 22, 23 such as sensors.

  In addition, as shown in FIG. 2, two displacement detection sensors are provided for one detection roller and are arranged at substantially both ends. For example, two displacement detection sensors 18 and 19 are disposed at substantially both ends of one detection roller 6. Further, the rotation shafts 10, 14, and 26 of the roller 2, the roller 3, and the meandering prevention roller 5 are attached to the casing 25 through a bearing 28 so as to be prevented from moving in the axial direction. Further, the displacement detection sensors 18, 19, 20, 21, 22, and 23 are provided on a circuit board (not shown), and the circuit board is attached to the housing 25. The pressing force between the reference roller and the detection roller is set by the distance between the rotation shaft 10 and the rotation shaft 14. Similarly, the pressing force between the detection roller and the meandering prevention roller is set by the distance between the rotation shaft 14 and the rotation shaft 26. The meandering prevention roller 5 can also apply a pressing force to the detection roller by pressing the rotating shaft 26 with a spring or the like.

  As shown in FIG. 3, the meandering prevention roller 5 is disposed so as to contact the outer ring 16 on a line passing through the rotation center of the detection roller 6 and parallel to the conveyance direction 30 of the paper sheet 4. The roller 27 of the meandering prevention roller 5 can be a metal roller, a rubber roller, or the like.

  The detection rollers 6, 7, and 8 are filled with an outer ring 16 made of a cylindrical member such as metal and a soft elastic member 15 such as rubber between the outer ring 16 and the rotating shaft 14. In addition, as shown in FIG. 2, the elastic member 15 may be divided and provided at both ends of the outer ring 16 as elastic members 15a and 15b. The elastic member 15 and the outer ring 16 can be bonded or non-bonded. Thus, when the paper sheet 4 is caught between the reference rollers 11, 12, 13 and the detection rollers 6, 7, 8, the elastic member 15 is deformed by the thickness of the paper sheet and the outer ring 16 is directed upward. Move to. This displacement is detected by the displacement detection sensors 18, 19, 20, 21, 22, and 23, and a detection signal corresponding to the thickness of the paper sheet is output.

  As described above, since the detection rollers 6, 7, and 8 detect the thickness of the paper sheet by deformation due to elasticity, there is a problem that meandering is likely to occur. Therefore, the meander prevention roller 5 can prevent meandering. This leads to improved accuracy in detecting the thickness of paper sheets. The meandering prevention roller 5 employs a structure having higher rigidity than the detection rollers 6, 7, and 8 as a whole. For example, it is desirable that the rotating shaft and the outer ring be integrated with each other using metal or synthetic resin.

  Further, the meandering prevention roller 5 can be driven and rotated by another driving device. Further, by making the rotation speed of the outer periphery of the meandering prevention roller 5 different from the rotation speed of the outer periphery of the detection rollers 6, 7, 8, cleaning is performed to remove foreign matters such as paper dust attached to the detection rollers 6, 7, 8. The effect can be improved.

  When the paper thickness detecting device of this embodiment is used in the automatic cash handling apparatus, the detection signal is sent to a determination processing unit (not shown) of the automatic cash handling apparatus. The judgment processing unit is a double feed in which two or more banknotes are overlapped from the detection signal and the posture signal of skew (inclination in the transport direction) and shift (position in the rotation axis direction) when the banknote passes the detection roller, or tape It is determined whether the ticket is a fake ticket, and a determination signal is output. The posture signal is used to correct the detection signal in a state where there is no skew of the banknote and to obtain the position where the banknote has passed the detection roller.

  In the above description, the three sets of reference rollers and detection rollers have been described. However, a large number of reference rollers and detection rollers are arranged in a direction perpendicular to the paper sheet transport direction so that the entire surface of the paper sheets can be detected. Yes.

  FIG. 4 shows a configuration when the meander prevention roller 5 is not provided in the configuration of FIG. 1 as a comparative example. As shown in FIG. 4, when the paper sheet 4 is passed between the reference roller 12 and the detection roller 7, the detection roller 7 is inclined or meandered in the conveyance direction due to the frictional resistance between the paper sheet 4 and the detection roller 7. There is a problem to do. When the detection roller is tilted or meandering in this way, the distance between the detection roller 7 and the displacement detection sensors 20 and 21 changes, so that there is a problem that the thickness of the paper sheet cannot be accurately detected.

  Therefore, in this embodiment, the inclination or meandering of the detection roller is prevented by contacting or pressing the roller 27 of the meandering prevention roller 5 against the detection roller. This has the effect of accurately detecting the thickness of the paper sheet. Further, the detection roller can be prevented from jumping by the frictional resistance with the roller 27 of the meandering prevention roller 5 when the paper sheet is caught between the reference roller and the detection roller. Further, when a rubber roller is used as the roller 27 of the meandering prevention roller 5, the frictional resistance with the detection roller increases, so that a greater suppression effect can be obtained.

  FIG. 5 shows another embodiment of the sheet thickness detecting apparatus of the present invention. FIG. 5 shows the configuration of FIG. 1 in which a meandering prevention roller 35 is provided opposite to the meandering prevention roller 5 in which the roller 37 provided on the rotary shaft 36 contacts or is pressed against the detection rollers 6, 7, 8 and rotates. It is. The description of the same reference numerals as those in FIG. 1 is omitted. Further, in FIG. 5, only one of the meandering prevention roller 5 and the meandering prevention roller 35 may be used.

  In this way, the meandering prevention roller 5 and the meandering prevention roller 35 are opposed to each other and contacted or pressed against the detection roller to prevent the detection roller from tilting or meandering. This has the effect of accurately detecting the thickness of the paper sheet. Further, the effect of suppressing the splash of the detection roller when the paper sheet is caught between the reference roller and the detection roller by the frictional resistance between the meander prevention roller 5 and the meander prevention roller 35 is improved. Further, when a rubber roller is used as the roller 27 of the meandering prevention roller 5, the frictional resistance with the detection roller increases, so that a greater suppression effect can be obtained.

  FIG. 6 shows another embodiment of the sheet thickness detecting apparatus of the present invention. FIG. 6 shows a position where the meandering prevention roller 5 and the meandering prevention roller 35 having the structure shown in FIG. 5 are moved in contact with or pressed against the detection rollers 6, 7, 8 and rotated by an angle 38 in the direction of the displacement detection sensor. The description of the same reference numerals as those in FIG. 1 is omitted. In addition, in FIG. 6, only one of the meandering prevention roller 5 and the meandering prevention roller 35 may be used. The angle 38 can be applied in the range of 0 degrees (symbol 39) to approximately 10 degrees. The position where the meandering prevention roller 5 and the meandering prevention roller 35 are in contact with the detection rollers 6, 7, 8 can be applied within a range of approximately 2 mm upward from the horizontal position (reference numeral 39).

  In this way, the meandering prevention roller 5 and the meandering prevention roller 35 are brought into contact with or pressed against the roller 3 to prevent the movable roller from tilting or meandering. This has the effect of accurately detecting the thickness of the paper sheet. Further, since the meandering prevention roller 5 and the meandering prevention roller 35 are disposed within the range in which the detection roller moves in the vertical direction, the detection roller and the meandering prevention roller when the paper sheet is caught between the reference roller and the detection roller. As a result, the effect of suppressing the jumping of the detection roller is improved. Further, when a rubber roller is used as the roller 27 of the meandering prevention roller 5, the frictional resistance with the detection roller increases, so that a greater suppression effect can be obtained.

  7 and 8 show another embodiment of the paper sheet thickness detecting device of the present invention. FIG. 7 shows that the convex roller 42 is provided at regular intervals on the roller 27 of the meandering prevention roller 5 in the configuration of FIG. It is inserted into the gap. The side surface of the convex roller 42 is configured to contact the side surface of the outer ring 16. FIG. 8 shows the configuration of FIG. 7 viewed from the side. The description of the same reference numerals as those in FIG. 1 is omitted.

  Further, the configuration of the meandering prevention roller shown in FIG. 7 may be used for both or one of the meandering prevention rollers shown in FIGS. Moreover, it can also be set as the structure which does not contact the roller 27 of the meandering prevention roller 5, and a detection roller. Further, the meandering prevention roller can be driven to rotate from the outside.

  As described above, the convex roller 42 is provided on the roller 27 of the meandering prevention roller 5 and the convex roller 42 is inserted into the gap between the adjacent detection rollers, whereby the outer ring 16 and the side surface of the convex roller 42 come into contact with each other. As a result, tilting or meandering of the movable roller can be prevented. This has the effect of accurately detecting the thickness of the paper sheet. Further, the detection roller can be prevented from jumping by the frictional resistance of the roller 27 of the meandering prevention roller 5 and the convex roller 42 when the paper sheet is caught between the reference roller and the detection roller. Further, when a rubber roller is used as the roller 27 of the meandering prevention roller 5, the frictional force with the detection roller increases, so that a greater suppression effect can be obtained. Further, when the configuration of the meandering prevention roller of FIG. 7 is applied to FIGS. 5 and 6, the effects of FIGS. 5 and 6 can be obtained in addition to the effects of FIG.

  In the description so far, an eddy current type displacement sensor is used as the displacement detector, but a capacitance type displacement sensor, an optical displacement sensor, a contact type displacement sensor, or the like can be used. Moreover, the paper sheet thickness detection device of the present invention can be applied to an automatic cash handling device and a bill thickness detection device of a vending machine.

  An example of the automatic cash handling apparatus according to the fifth embodiment of the present invention will be described with reference to FIG. The present embodiment is an automatic cash handling apparatus equipped with the banknote handling apparatus 90 of FIG. The banknote handling apparatus 90 shown in FIG. 9 includes a banknote supply / reception mechanism 91, a banknote determination apparatus 97, a temporary stacker 93 that temporarily stores banknotes when the banknotes are stored and dispensed, and banknotes that cannot be mechanically processed. A banknote collection box 94 for storing, denomination storage boxes 95a, 95b, and 95c for storing and dispensing banknotes 96b by denomination, and a banknote transport path 92a for transporting banknotes by connecting these components. 92b.

  The banknote supply / reception mechanism 91 is a device that separates / releases banknotes for storing banknotes 96a supplied at the time of depositing cash and pays out an amount designated by the user at the time of cash withdrawal.

  The banknote determination device 97 determines whether the denomination or authenticity of the banknote consists of an image sensor that detects the pattern of the banknote, a magnetic sensor that detects the magnetic pattern of the banknote, and a fluorescence sensor that detects a fluorescent image of the banknote. A judgment device and a paper thickness detecting device for detecting a bill that has been transformed with double feed and tape, paper, etc., in which two or more bills overlap each other, and the authenticity of the bill, denomination , Judge whether there is alteration or not, double feed, and whether it is acceptable. The paper sheet thickness detection device uses the paper sheet thickness detection device shown in the first embodiment (Example 1), but the second to fourth embodiments (Example 2). Any one of Example 4) may be used.

  Next, operation | movement of the banknote handling apparatus 90 shown in FIG. 9 is demonstrated. When depositing cash, banknotes 96a supplied to the banknote supply / reception mechanism 91 are separated one by one and sent out to the conveyance path 92a. The bill 96a sent out to the transport path 92a is discriminated by the bill judgment device 97 as to whether the bill is a genuine note or a fake bill, or is denominated, and whether the bill is one or two or more ( The presence or absence of double feeding, whether it is a folded ticket) is determined. If the bill is a genuine note that can be accepted and is a single note or a folded note, it is stored in the temporary stacker 93 and the transaction amount is displayed. On the other hand, when there is a problem with the supplied banknotes, all the supplied banknotes are returned to the banknote supply and reception mechanism 91. When the transaction is established, the bill 96a accumulated in the temporary stacker 93 passes through the bill judgment device 97 again, and it is checked whether one or more bills or denominations are present, and each denomination storage box 95 is checked. It is stored in.

  When paying out the cash, the bills 96b in the denomination storage box 95 are separated one by one and sent out to the transport path 92b. The banknote sent out to the transport path 92b is discriminated by the banknote determination device 97 to determine whether one or more banknotes are present. When there is one bill, it is paid out to the bill supply / reception mechanism 91. In the case of two or more sheets and folded tickets, they are stored in a temporary stacker and then stored in the bill collection box 94. Note that the bill determination device 97 is configured to be able to determine whether a bill is conveyed from either direction of reciprocation.

  According to the automatic cash handling apparatus according to the present embodiment, by providing the banknote determination apparatus using the paper sheet thickness detection apparatus according to the embodiment of the present invention, a stack of two or more banknotes is overlapped. There is an effect that it is possible to detect bills transformed by feeding, tape, paper, etc. with high accuracy.

  In the above embodiment, the paper sheet thickness detection device used in the automatic cash handling apparatus has been described. However, the present invention can also be applied to a paper sheet thickness detection device of a vending machine.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Further, each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files that realize each function can be stored in a memory, a recording device such as a hard disk or an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD.

DESCRIPTION OF SYMBOLS 1 Paper sheet thickness detection apparatus 2, 3 Roller 4 Paper sheet 5 Meander prevention roller 6, 7, 8 Detection roller 10, 14 Rotating shaft 11, 12, 13 Reference roller 15 Elastic member 16 Outer ring 18, 19, 20 , 21, 22, 23 Displacement detection sensor

Claims (7)

A plurality of reference rollers mounted on a rotating shaft and arranged in a direction perpendicular to the conveying direction of the paper sheet, and arranged corresponding to the positions of the plurality of reference rollers, the outer ring of which contacts the reference roller A plurality of detection rollers that rotate and a plurality of displacement detection sensors that are arranged to face each of the plurality of detection rollers and detect the displacement of each detection roller, and the plurality of reference rollers and the plurality of the plurality of detection rollers In the paper sheet thickness detecting device for detecting the thickness of the paper sheet by sandwiching and conveying the paper sheet to the contact portion between the outer ring of the detection roller,
Providing a meandering prevention roller that rotates in contact with the outer ring of the plurality of detection rollers;
Protruding roller portions are provided at regular intervals on the meandering prevention roller, the protruding roller portions are inserted into the gaps between the adjacent detection rollers, and the side surfaces of the protruding roller portions The sheet thickness detecting device is configured to rotate while contacting a side surface of the outer ring of the detection roller . In the thickness detection apparatus of the paper sheet of Claim 1,
A sheet thickness detecting device, wherein the meandering prevention rollers are arranged on both sides of an outer ring of the detection roller . In the thickness detection apparatus for paper sheets according to claim 1 or 2 ,
An apparatus for detecting the thickness of a paper sheet, characterized in that the rotational speed of the outer periphery of the meandering prevention roller is different from the rotational speed of the outer periphery of the detection roller . In the thickness detection apparatus of the paper sheet of Claim 1 ,
The paper sheet thickness detection device, wherein the plurality of detection rollers include an elastic body between an outer ring and a rotation shaft . In the thickness detection apparatus of the paper sheet of Claim 1,
The meandering prevention roller is, for example, substantially the same height as the rotation center of the plurality of detection rollers, or disposed above the plurality of displacement detection sensors that detect the displacement of each detection roller. Thickness detection device. In the thickness detection apparatus for paper sheets according to any one of claims 1 to 5 ,
The paper sheet thickness detecting device, wherein the meandering prevention roller has higher rigidity than the plurality of detection rollers . A bill handling device comprising the paper sheet thickness detection device according to any one of claims 1 to 6 .

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