JP2016033783A - Paper sheet processor and paper sheet processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper sheet processor and a paper sheet processing method capable of accurately detecting metal foreign matters even when the number of paper sheets to be thrown into a paper sheet throw-in part is large, or even when metal foreign matters contained in the paper sheets are small.SOLUTION: A paper sheet processor (for example, paper sheet processing machine) includes: a paper sheet throw-in part (for example, a depositing and dispensing part 20) for throwing in paper sheets such as paper money from the outside to inside of a casing; and a foreign matter detection part (for example, a metal foreign matter detection part 60) arranged in the paper sheet throw-in part. The metal foreign matter detection part includes: an exciting coil (for example, an exciting coil 64) through which currents are allowed to flow; and a detection coil (for example, a detection coil 62) arranged such that the coil surface is orthogonal to the coil surface of the exciting coil. When the metal foreign matters are contained in the paper sheets to be thrown into the paper sheet thrown-in part, currents are allowed to flow through the detection coil so that the metal foreign matters can be detected.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a paper sheet processing apparatus and a paper sheet processing method capable of detecting a metallic foreign matter contained in a paper sheet when paper sheets such as banknotes are inserted into the housing from the outside. .

  2. Description of the Related Art Conventionally, in a banknote depositing / dispensing machine used in an automatic teller machine such as an ATM (automated teller machine) installed in a financial institution or the like, a clip etc. A metal foreign object sensor that detects the metal foreign object when a metal foreign object is mixed is installed in the deposit / withdrawal port. As such a metal foreign object sensor, what is disclosed by patent document 1 etc. is known, for example.

  In a conventional foreign metal sensor as disclosed in Patent Document 1 or the like, a detection coil in which a wire such as a copper wire is wound in a rectangular shape is used, and an AC current is applied to the detection coil. To generate magnetic flux. When the metal foreign matter mixed in the bill approaches the detection coil, an eddy current is generated on the surface of the detection coil, a reaction magnetic flux is generated, and the electromotive force of the detection coil changes. By detecting this change, a metallic foreign object is detected.

European Patent Application Publication EP1362331A2

  However, in the conventional metal foreign object sensor as disclosed in Patent Document 1 and the like, the metal foreign object contained in the banknote cannot be detected unless the metal foreign object is sufficiently close to the detection coil. When the number of banknotes inserted into the banknote is large and the distance between the metal foreign matter mixed in the bundle of banknotes inserted into the deposit / withdrawal port and the detection coil becomes large, the metal foreign object cannot be detected. There was a fear. Further, in the conventional metal foreign matter sensor as disclosed in Patent Document 1 or the like, when the metal foreign matter contained in the banknote is small, the eddy current generated on the surface of the detection coil is also reduced, and the change in the electromotive force of the detection coil is reduced. Therefore, there is a possibility that metal foreign objects cannot be detected.

  The present invention has been made in consideration of such points, and even when the number of sheets fed into the sheet feeding unit is large or when the metal foreign matter contained in the sheet is small, the metal It is an object of the present invention to provide a paper sheet processing apparatus and a paper sheet processing method capable of reliably detecting foreign matter.

  The paper sheet processing apparatus of the present invention is disposed in a housing, a paper sheet loading unit for loading paper sheets from the outside of the housing to the inside, and the paper sheet loading unit, An excitation coil to be flowed, and a detection coil arranged so that its coil surface is orthogonal to the coil surface of the excitation coil. And a metal foreign object detector that detects the metal foreign object when a current flows through the detection coil when it is included.

  According to such a paper sheet processing apparatus, the metal foreign matter detection unit having the exciting coil and the detection coil arranged so that the coil surface thereof is orthogonal to the coil surface of the exciting coil is provided in the paper sheet feeding unit. The metallic foreign matter detection unit detects the metallic foreign matter when a current flows through the detection coil when the metallic material is included in the paper sheet that is placed in the paper feeding unit. Therefore, even when the number of sheets fed into the sheet feeding unit is large or when the metallic foreign matter contained in the paper is small, the metallic foreign matter can be reliably detected.

  In the paper sheet processing apparatus of the present invention, the paper sheet input unit is provided with a paper sheet input region in which one or a plurality of the paper sheets are input in a stacked state, and the metal foreign matter detection The exciting coil of the unit may be arranged so as to wrap around the sheet feeding region of the sheet feeding unit.

  In the paper sheet processing apparatus of the present invention, the paper sheet loading unit is provided with a feeding mechanism that feeds the paper sheets loaded into the paper sheet loading unit one by one into the housing. The detection coil of the metallic foreign matter detection unit may be provided on the paper sheet feeding unit on the side where the feeding mechanism is installed.

  In this case, the paper sheet feeding unit is provided with a placement unit on which one or a plurality of the paper sheets are placed in a standing state, and the detection coil of the metal foreign matter detection unit has a front At least one may be arranged in the height direction of the paper sheet placed in a standing position on the placement unit.

  Further, at least one of the detection coils of the metallic foreign object detection unit may be arranged in the width direction of the paper sheet placed in a standing state on the placement unit.

  Further, the detection coil of the metallic foreign matter detection unit is also provided on a side of the paper sheet feeding unit that faces the side edge of the paper sheet that is placed in a standing position on the placement unit. It may be.

  In the paper sheet processing apparatus of the present invention, the metallic foreign matter detection unit detects the metallic foreign matter contained in the paper sheet when the paper sheet is inserted into the paper sheet feeding unit. It may be.

  Alternatively, the metallic foreign matter detection unit detects the metallic foreign matter contained in the paper sheet after a predetermined time has elapsed since the paper sheet was placed in the paper sheet feeding unit. May be.

  Alternatively, a shutter that selectively restricts access to the inside of the paper sheet input unit is provided in the paper sheet input unit so as to be openable and closable, and the metal foreign matter detection unit is configured such that the shutter is closed. The metallic foreign matter contained in the paper sheet in the paper sheet feeding unit may be detected when the paper is in a state where the paper is in a state of being in a closed state.

  In this case, when the metallic foreign matter is detected by the metallic foreign matter detection unit, the shutter may be opened so that the inside of the paper sheet feeding unit can be accessed.

  The paper sheet processing apparatus of the present invention may further include a notification unit for notifying the metal foreign object when the metal foreign object detection unit detects the metal foreign object.

  The paper sheet processing method of the present invention includes a casing, a paper sheet input unit for inputting paper sheets from the outside to the inside of the case, and an excitation coil disposed in the paper sheet input unit. And a paper sheet processing method by a paper sheet processing apparatus comprising a metal foreign object detection unit having a detection coil arranged so that its coil surface is orthogonal to the coil surface of the excitation coil, Applying a current to the exciting coil of the metallic foreign matter detection unit; and when the metallic material is included in the paper sheet to be fed into the paper feeding unit, the detection coil of the metallic foreign matter detection unit And a step of detecting the metal foreign object by flowing an electric current.

  According to such a paper sheet processing method, when a current is passed through the exciting coil of the metal foreign matter detection unit and the metal foreign matter is contained in the paper sheet to be fed into the paper sheet feeding unit, the metal foreign matter detection unit Since the metal foreign matter is detected when a current flows through the detection coil, when there are a large number of paper sheets to be fed into the paper sheet feeding section or when there are metal foreign matters contained in the paper sheets. Even when it is small, it is possible to reliably detect metallic foreign matter.

  According to the paper sheet processing apparatus and the paper sheet processing method of the present invention, even when the number of paper sheets fed into the paper sheet feeding unit is large or when the metal foreign matter contained in the paper sheet is small, the metal Foreign matter can be detected reliably.

It is a schematic block diagram which shows the schematic structure of the banknote processing machine by the 1st Embodiment of this invention. It is a perspective view which shows typically the structure of the metal foreign material detection part provided in the deposit or withdrawal part of the banknote processing machine shown in FIG. It is a schematic block diagram which shows the outline of a structure when the metal foreign material detection part shown in FIG. 2 is seen from upper direction. It is a perspective view which shows roughly the position of the some detection coil of the metal foreign material detection part actually arrange | positioned at the deposit or withdrawal part of the banknote processing machine shown in FIG. FIG. 4B is a top view schematically showing positions of a plurality of detection coils of the metal foreign object detection unit when the deposit / withdrawal unit shown in FIG. 4A is viewed from above. It is a perspective view which shows typically the structure of the metal foreign material detection part of the prior art as a comparative example. It is a schematic block diagram which shows the outline of a structure when the metal foreign material detection part of the prior art shown in FIG. 5 is seen from the side. It is a perspective view which shows typically the other structure of the metal foreign material detection part of the prior art as a comparative example. It is a block diagram which shows the structure of the deposit or withdrawal part in the banknote processing machine shown in FIG. 1, Comprising: It is a figure which shows the operation | movement at the time of performing the deposit process of a banknote. It is a block diagram which shows the structure of the deposit or withdrawal part in the banknote processing machine shown in FIG. 1, Comprising: It is a figure which shows the operation | movement at the time of performing the deposit process of a banknote following the state shown in FIG. It is a block diagram which shows the structure of the deposit or withdrawal part in the banknote processing machine shown in FIG. 1, Comprising: It is a figure which shows the operation | movement at the time of performing the money_receiving | payment process of a banknote following the state shown in FIG. It is a block diagram which shows the structure of the deposit or withdrawal part in the banknote processing machine shown in FIG. 1, Comprising: It is a figure which shows the operation | movement at the time of performing the deposit process of a banknote following the state shown in FIG. It is a top view which shows the structure of a mounting part when the depositing / withdrawing part in the banknote processing machine shown in FIG. 1 is seen from upper direction. It is a functional block diagram of the banknote processing machine shown in FIG. It is a perspective view which shows typically the structure of the metal foreign material detection part by the 2nd Embodiment of this invention. It is a schematic block diagram which shows the outline of a structure when the metal foreign material detection part shown in FIG. 14 is seen from this side. It is a schematic block diagram which shows the schematic structure of the banknote processing machine by the 3rd Embodiment of this invention. It is a side view which shows the outline of a structure of the banknote bundle conveyance mechanism in the banknote processing machine shown in FIG.

[First Embodiment]
The first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 thru | or FIG. 13 is a figure which shows the structure of the banknote processing machine by this Embodiment. Among these, FIG. 1 is a schematic configuration diagram showing a schematic configuration of the banknote handling machine according to the present embodiment. 2, FIG. 3, FIG. 4A, and FIG. 4B are diagrams showing the configuration of the metal foreign object detection unit provided in the deposit / withdrawal unit of the banknote handling machine shown in FIG. 5 to 7 are diagrams showing various configurations of a conventional metal foreign object detection unit as a comparative example. Moreover, FIG. 8 thru | or FIG. 11 is a block diagram which shows the structure of the deposit or withdrawal part in the banknote processing machine shown in FIG. 1, Comprising: It is a figure which shows the operation | movement at the time of performing the deposit process of a banknote. FIG. 12 is a top view showing the configuration of the placement unit when the deposit / withdrawal unit in the banknote handling machine shown in FIG. 1 is viewed from above. FIG. 13 is a functional block diagram of the banknote handling machine shown in FIG.

  First, the whole structure of the banknote processing machine 10 which concerns on this Embodiment is demonstrated using FIG. As shown in FIG. 1, the banknote handling machine 10 according to the present embodiment includes an upper housing 12 and a lower housing 14. The upper housing 12 is provided with a deposit / withdrawal unit 20 for throwing banknotes into and out of the upper housing 12 and throwing banknotes from the inside of the upper housing 12 to the outside. Details of the configuration of the deposit / withdrawal unit 20 will be described later. Further, inside the upper housing 12, a transport unit 40 that transports banknotes one by one is connected to the deposit / withdrawal unit 20. The conveyance unit 40 is provided with an identification unit 42, and the banknotes conveyed by the conveyance unit 40 are identified by the identification unit 42 such as denomination, true / false, and harm. Further, the conveyance unit 40 is provided with a skew correction unit 44. When the banknotes fed from the deposit / withdrawal unit 20 to the conveyance unit 40 are conveyed in a skew state, the skew correction unit 44 performs the skew correction. The condition is to be corrected. In addition, a tape winding type temporary holding unit 46 is connected to the transport unit 40. The temporary storage unit 46 has a drum that can rotate in both forward and reverse directions, and a pair of tapes are wound around the drum. And the banknote sent to the temporary storage part 46 from the conveyance part 40 is wound up by the drum one by one in the state pinched | interposed between this pair of tapes, and is accommodated. Further, when the drum is reversed, the wound banknotes are fed out one by one and sent to the transport unit 40. Further, the conveyance unit 40 is provided with an alignment unit 48, and the banknote conveyed by the conveyance unit 40 becomes a predetermined position (for example, a central position) in the width direction of the conveyance path by the alignment unit 48. The alignment is performed as described above. Further, a counterfeit bill storage unit 49 is connected to the transport unit 40, and a banknote identified as a fake ticket by the identification unit 42 or a banknote identified as uncertain is verified by the transport unit 40. It is sent to the counterfeit ticket storage unit 49 and stored in the counterfeit ticket storage unit 49.

  Further, the lower housing 14 is a so-called safe, and only a person having a specific authority such as an administrator can open the door of the lower housing 14 to access the inside. In addition, inside the lower housing 14, a transport unit 41 that transports banknotes one by one is provided, and the transport unit 41 is connected to a transport unit 40 provided in the upper housing 12. As a result, banknotes can be delivered between the upper housing 12 and the lower housing 14. A plurality of banknote storage and feeding cassettes 50 are provided in parallel in the lower housing 14, and each banknote storage and feeding cassette 50 is connected to the transport unit 41. Each banknote storage and feeding cassette 50 stores banknotes sent from the transport unit 41, for example, by denomination. Each bill storage and feeding cassette 50 is provided with a bill feeding mechanism (not shown) that feeds the stored bills one by one to the transport unit 41. A plurality of banknote storage cassettes 52 are provided in parallel in the lower housing 14, and each banknote storage cassette 52 is connected to the transport unit 41. Each banknote storage cassette 52 stores banknotes sent from the transport unit 41. Further, each banknote storage cassette 52 is identified as a counterfeit by the overflow banknote and the identification unit 42 which cannot be stored in the banknote storage and feeding cassette 50 because the corresponding denomination banknote storage and feeding cassette 50 is full. Banknotes, banknotes for which no denomination is assigned to each banknote storage and feeding cassette 50, non-useable banknotes that cannot be used for withdrawal, and the operator (customer) forgets to remove them after being sent to the deposit / withdrawal unit 20 during the withdrawal process. Banknotes (banknotes forgotten to be removed) and the like are stored. In addition, it is possible to arbitrarily set which banknote storage cassette 52 stores the various types of banknotes described above.

  Next, operation | movement at the time of performing various processes, such as a money_receiving | payment process and a payment process in such a banknote processing machine 10, is demonstrated.

  When banknote depositing processing is performed in the banknote handling machine 10, an operator opens a shutter 28 (described later) of the depositing / dispensing unit 20 by inputting a depositing instruction through an operation display unit 80 (described later) such as a touch panel. Thereafter, when a bill is inserted into the deposit / withdrawal unit 20, after the shutter 28 of the deposit / withdrawal unit 20 is closed, the bills are fed one by one by a first bill feeding mechanism 24 (described later) provided in the deposit / withdrawal unit 20. It is fed out to the transport unit 40. The banknotes fed to the transport unit 40 are corrected in skew state by the skew correction unit 44, and then the identification unit 42 identifies the denomination, true / false, correctness, and the like. The banknotes identified by the identification unit 42 as being counterfeit and the banknotes identified as being uncertain are sent to the counterfeit storage 49 by the transport unit 40 and stored in the counterfeit storage 49. Is done. Moreover, the banknote identified as a normal banknote by the identification part 42 is sent to the temporary storage part 46 by the conveyance part 40, and is temporarily hold | maintained by this temporary storage part 46. Moreover, the reject banknote identified as not a normal banknote by the identification part 42 may be returned to the depositing / withdrawing part 20 by the conveyance part 40. Then, after all the bills inserted into the deposit / withdrawal unit 20 are drawn out into the upper housing 12 and sent to the temporary storage unit 46, the counterfeit bill storage unit 49, and the like, the operator displays the operation display unit 80 (described later). ), A banknote temporarily held in the temporary storage unit 46 is stored in each banknote storage and feeding cassette 50 by denomination by the transport units 40 and 41.

  When the banknote handling machine 10 performs banknote dispensing processing, banknotes stored in each banknote storage and feeding cassette 50 are conveyed one by one by a banknote feeding mechanism provided in the banknote storage and feeding cassette 50. After being delivered to 41 and transferred from the transport unit 41 to the transport unit 40, the discriminating unit 42 identifies the denomination, authenticity, correctness, etc. The banknotes identified as normal banknotes by the identifying unit 42 are aligned by the positioning unit 48 so as to be in a predetermined position (for example, the center position) in the width direction of the transport path, and then are entered and exited. It is sent to the gold part 20 and accumulated in the deposit / withdrawal part 20. On the other hand, the banknote identified as not being a normal banknote by the identification unit 42 is sent to the temporary storage unit 46 and temporarily stored in the temporary storage unit 46. When a predetermined amount of banknotes is sent from each banknote storage and feeding cassette 50 to the deposit / withdrawal unit 20, the operator opens the banknote from the deposit / withdrawal unit 20 by opening the shutter 28 of the deposit / withdrawal unit 20. 12 can be taken out to the outside. Moreover, the banknote temporarily hold | maintained by the temporary storage part 46 is drawn out from the said temporary storage part 46, and this fed-out banknote is sent to the banknote storage delivery cassette 50 or the banknote storage cassette 52 by the conveyance part 40 and the conveyance part 41. It is done. In addition, after a shutter 28 of the deposit / withdrawal unit 20 is opened, when a bill is not taken out from the deposit / withdrawal unit 20 even after a predetermined time has elapsed, the second bill feeding mechanism 26 ( The banknotes are fed out one by one to the transport unit 40 by a later-described process, and after the denomination of the banknotes is confirmed by passing through the identification unit 42, the banknotes are temporarily stored in the temporary storage unit 46, and then temporarily stored. The fed banknotes are fed out from the temporary storage unit 46, and the fed out banknotes are sent to the banknote storage and feeding cassette 50 or the banknote storage cassette 52 by the transport unit 40 and the transport unit 41. Further, after the shutter 28 of the deposit / withdrawal unit 20 is opened, when a bill is not taken out from the deposit / withdrawal unit 20 even after a predetermined time has elapsed, the second bill feeding mechanism 26 from the deposit / withdrawal unit 20. The banknotes are fed out one by one to the transport unit 40 (described later), and after passing through the alignment unit 48, the denomination of the banknotes is confirmed by passing through the identification unit 42. It may be sent to the banknote storage and feeding cassette 50 or the banknote storage cassette 52 by the transport unit 41.

  Next, details of the configuration of the deposit / withdrawal unit 20 provided in the banknote handling machine 10 will be described with reference to FIGS. 8 to 12. In addition, the banknote which exists in the deposit or withdrawal part 20 in FIG.

  As shown in FIGS. 8 to 12, the deposit / withdrawal unit 20 is provided with a placement unit 22 on which a plurality of banknotes are placed in a standing state. Here, FIG. 12 is a top view showing a configuration of the placing portion 22 when the deposit / withdrawal portion 20 is viewed from above. As shown in FIG. 12, the mounting portion 22 is formed between a pair of left and right side walls 21, and a plurality of rod-shaped mounting members (ribs) 23 a extending in parallel are provided on the bottom surface 23 of the mounting portion 22. Is provided. And in the mounting part 22, the stack | stuck of a banknote is mounted in the standing state on these mounting members 23a so that the some mounting member 23a may be straddled. In addition, a space 23b having a size sufficient for dropping foreign matter other than banknotes, such as coins and clips, is formed between the placement members 23a. Here, the cross-sectional shape of each mounting member 23a is a mountain shape, and only the top of the mountain-shaped cross section is in contact with the lower end edge of the banknote bundle. Since the cross-sectional shape of each mounting member 23a has such a mountain shape, the contact area between the lower edge of the bundle of banknotes and each mounting member 23a is reduced, and the banknote is pressed by a pressing member 34 described later. Each stacking member 23a does not hinder the movement of the bills when the bundle is pressed toward the first bill feeding mechanism 24 described later. As shown in FIGS. 8 to 11, a foreign matter receiving portion 25 that receives foreign matter dropped from the placement portion 22 through each space 23 b is provided below the placement portion 22.

  Further, as shown in FIG. 8 to FIG. 11, on one side portion of the placement portion 22, a bill placed on the placement portion 22 in a standing state is fed out into the upper housing 12. A first banknote feeding mechanism 24 is provided. The first bill feeding mechanism 24 kicks downward the kicker roller 24a for kicking downward the bill on the lower left side in FIG. 8 among the bills placed on the placement unit 22, and the kicker roller 24a. A fed roller 24b that feeds the bill into the upper housing 12 and sends it to the transport unit 40 is provided in contact with the feed roller 24b, and forms a gate portion (nip portion) with the feed roller 24b. And an opposing roller 24c. Here, even when a plurality of banknotes are kicked downward by the kicker roller 24a, the banknotes are separated one by one by the gate portion formed between the feed roller 24b and the opposing roller 24c. ing.

  In addition, a second bill feeding mechanism 26 for feeding out the bill placed on the placement portion 22 in a standing state to the inside of the upper housing 12 is also provided on the other side portion of the placement portion 22. ing. Here, the second banknote feeding mechanism 26 is used when a banknote sent from the transport unit 40 to the placement unit 22 is again fed into the upper housing 12 when a banknote dispensing process is performed. It has become. Similar to the first banknote feeding mechanism 24, the second banknote feeding mechanism 26 kicks downward the banknote closest to the second banknote feeding mechanism 26 among the banknotes placed on the placement unit 22. A kick roller 26a, a feed roller 26b that feeds the banknote kicked downward by the kicker roller 26a into the upper housing 12 and sends it to the transport unit 40, and a feed roller 26b. And a counter roller 26c that forms a gate portion (nip portion) between them. Here, even when a plurality of banknotes are kicked downward by the kicker roller 26a, the banknotes are separated one by one by the gate portion formed between the feed roller 26b and the opposing roller 26c. ing. Further, when the banknote is sent from the transport unit 40 to the placement unit 22 in the banknote dispensing process, the banknote sent from the transport unit 40 passes through the gate portion formed between the feed roller 26b and the opposing roller 26c. Thus, it is placed on the placement unit 22 in a standing position.

  Further, the deposit / withdrawal unit 20 is provided with a shutter 28 for opening and closing the placement unit 22. The shutter 28 is opened as shown in FIG. 8 so that the operator can open the placement unit 22 and put his / her hand into the placement unit 22, and as shown in FIGS. 9 to 11. The mounting unit 22 is closed, and the operator moves between a closed position where the operator cannot put his / her hand into the mounting unit 22.

  Further, a guide portion 30 that constitutes a side surface of the loading portion 22 on the first bill feeding mechanism 24 side is provided in the vicinity of the kicker roller 24 a of the first bill feeding mechanism 24. The guide portion 30 is movable along the bottom surface 23 of the placing portion 22 in a direction toward the first bill feeding mechanism 24 and a direction away from the first bill feeding mechanism 24.

  The depositing / dispensing unit 20 is provided with a pressing member 34 that presses a bundle of banknotes placed on the placement unit 22 toward the first banknote feeding mechanism 24. The pressing member 34 is movable along the bottom surface 23 of the placing portion 22 in a direction toward the first banknote feeding mechanism 24 and a direction away from the first banknote feeding mechanism 24. Then, when the pressing member 34 moves in the direction toward the first banknote feeding mechanism 24 in a state where the banknotes are mounted on the mounting unit 22, the bundle of banknotes mounted on the mounting unit 22. Is pushed toward the first banknote feeding mechanism 24 by the pressing member 34, and the banknote on the lower left side in FIG. It is extended inside the upper housing 12.

  The deposit / withdrawal unit 20 is provided with a first partition member 36 and a second partition member 38 for dividing the placement unit 22 into a plurality of regions. The first partition member 36 and the second partition member 38 are moved away from the first banknote feeding mechanism 24 and in the direction toward the first banknote feeding mechanism 24 along the bottom surface 23 of the placement portion 22. It is free to move in the direction. And between the guide part 30 and the holding | suppressing member 34, when the deposit process of a banknote is performed, the deposit area | region where a banknote is thrown in by an operator is formed, and a 1st partition Between the member 36 and the second partition member 38, the banknote passes through the gate portion formed between the feed roller 26 b and the opposing roller 26 c from the transport section 40 when the banknote dispensing process is performed. A withdrawal area to be sent is formed. Further, the pressing member 34 described above is positioned between the guide portion 30 and the first partition member 36.

  Moreover, as shown in FIG. 13, the banknote processing machine 10 of this Embodiment is provided with the main body control part 70 which controls each component of the said banknote processing machine 10. As shown in FIG. The main body control unit 70 is connected to the deposit / withdrawal unit 20, the transport unit 40, the identification unit 42, the skew correction unit 44, the temporary storage unit 46, the alignment unit 48, and the banknote storage and feeding cassette 50. Here, the banknote identification result by the identification unit 42 is sent to the main body control unit 70. Moreover, the main body control unit 70 sends these command signals to each of the deposit / withdrawal unit 20, the conveyance unit 40, the skew correction unit 44, the temporary storage unit 46, the alignment unit 48, and the banknote storage / feeding cassette 50, thereby configuring these components. The element is controlled. As shown in FIG. 13, an operation display unit 80, a storage unit 82, a printing unit 84, and a communication unit 86 are connected to the main body control unit 70, respectively. The operation display unit 80 includes a touch panel or the like provided on the front surface or the upper surface of the upper housing 12 of the banknote handling machine 10. The operation display unit 80 displays information related to banknote processing status and banknotes in the banknote handling machine 10. Various commands can be input through the operation display unit 80. Moreover, the memory | storage part 82 memorize | stores the information which concerns on the banknote processing state, banknote processing status, etc. in the banknote processing machine 10. FIG. The printing unit 84 includes a printer or the like that prints information relating to the banknote processing status and banknotes in the banknote processing machine 10 on a receipt or the like. The communication unit 86 transmits and receives signals to and from an external device such as a host device provided outside the banknote handling machine 10.

  As shown in FIG. 13, the deposit / withdrawal unit 20 is provided with a deposit / withdrawal unit control unit 72 that controls each component of the deposit / withdrawal unit 20. The deposit / withdrawal unit control unit 72 includes a first banknote feeding mechanism 24, a second banknote feeding mechanism 26, a shutter 28, a guide unit 30, a pressing member 34, a first partition member 36, a second partition member 38, and a metal. A foreign object detection unit 60 (described later) is connected to each other. Here, the metal foreign object detection information by the metal foreign object detection unit 60 is sent to the main body control unit 70 via the deposit / withdrawal unit control unit 72. The deposit / withdrawal unit control unit 72 includes a first banknote feeding mechanism 24, a second banknote feeding mechanism 26, a shutter 28, a guide unit 30, a pressing member 34, a first partition member 36, and a second partition member 38. These components are controlled by sending respective command signals.

  In the banknote handling machine 10 of the present embodiment, the deposit / withdrawal unit control unit 72 is not installed in the deposit / withdrawal unit 20, and the main body control unit 70 performs the function of the deposit / withdrawal unit control unit 72 described above. It may be. In this case, the metal foreign object detection information by the metal foreign object detection unit 60 is directly sent to the main body control unit 70.

  Next, the operation of the deposit / withdrawal unit 20 in the banknote handling machine 10 according to the present embodiment (specifically, the operation of the deposit / withdrawal unit 20 when performing deposit processing of banknotes) will be described with reference to FIGS. 8 to 11. To do.

  When the banknote handling machine 10 performs banknote deposit processing, when an operator inputs a deposit command through the operation display section 80, the shutter 28 of the deposit / withdrawal section 20 is opened as shown in FIG. Then, when the operator inserts a bundle of banknotes in the standing position on the placement unit 22, the banknote insertion outlet is closed by the shutter 28 as shown by an arrow in FIG. 9. After that, as shown by the arrow in FIG. 10, the pressing member 34 moves toward the first bill feeding mechanism 24 side along the bottom surface 23 of the placement portion 22, so that the bills put into the placement portion 22 are moved. The bundle is sandwiched between the pressing member 34 and the guide portion 30. And as shown in FIG. 11, the guide part 30 and the pressing member 34 move toward the 1st banknote feeding mechanism 24 side in the state which pinched | interposed the banknote bundle. Then, the kicker roller 24a rotates in the clockwise direction in FIG. 11 while the pressing member 34 presses the bundle of banknotes on the placement unit 22 toward the kicker roller 24a side of the first banknote feeding mechanism 24. Thus, the banknote on the lower left side in FIG. 11 among the banknotes placed on the placement unit 22 is kicked downward one by one by the kicker roller 24a, and the kicked banknote is fed into the upper housing by the feed roller 24b. One sheet is fed into the body 12 one by one.

  Moreover, in the deposit process of a banknote, when the banknote identified as the normal banknote by the identification part 42 is returned to the deposit / withdrawal part 20 as a reject banknote, the banknote conveyed by the depositing / withdrawing part 20 from the conveyance part 40 Is sent to the placing portion 22 through a gate portion formed between the feed roller 26b and the opposing roller 26c in the second bill feeding mechanism 26. At this time, the banknotes that have passed through the gate portion formed between the feed roller 26b and the opposing roller 26c are placed in the withdrawal area formed between the first partition member 36 and the second partition member 38. Sent and accumulated in this withdrawal area in a standing position. Thereafter, after all the banknotes between the guide portion 30 and the pressing member 34 are drawn out into the upper housing 12, the shutter 28 is opened, and the operator can use the first partition member 36 and the second partition member 22 in the placement portion 22. The reject banknotes accumulated between the partition members 38 can be taken out of the upper housing 12.

  In the present embodiment, in the deposit / withdrawal unit 20, when a metal foreign matter such as a clip is included in a bill inserted into the placement unit 22 from the outside of the upper housing 12 of the banknote handling machine 10, the metal foreign matter is removed. A metal foreign object detection unit 60 for detection is provided. More specifically, the metal foreign object detection unit 60 includes an electromagnetic induction sensor, and the metal foreign object detection unit 60 includes a detection coil 62 and an excitation coil 64. Details of the configuration of the metal foreign object detection unit 60 will be described with reference to FIGS. 2, 3, 4 </ b> A, and 4 </ b> B. 2 is a perspective view schematically showing the configuration of the metal foreign object detector 60 provided in the deposit / withdrawal part 20 of the banknote handling machine 10 shown in FIG. 1, and FIG. 3 is a metal foreign object shown in FIG. It is a schematic block diagram which shows the outline of a structure when the detection part 60 is seen from upper direction. 4A is a perspective view schematically showing the positions of the plurality of detection coils 62 of the metal foreign object detection unit 60 actually arranged in the depositing / withdrawing unit 20 of the banknote handling machine 10 shown in FIG. These are top views which show roughly the position of the some detection coil 62 of the metal foreign material detection part 60 when the depositing / withdrawing part 20 shown to FIG. 4A is seen from upper direction.

  As shown in FIG. 2 and the like, the metal foreign object detection unit 60 includes a detection coil 62 in which electric wires such as copper wires are wound in a rectangular shape, and an excitation in which electric wires such as copper wires are wound in multiple layers. And a coil 64. In such a metallic foreign matter detection unit 60, the detection coil 62 and the excitation coil 64 are arranged so that the coil surface of the detection coil 62 is orthogonal to the coil surface of the excitation coil 64. Specifically, in FIG. 2, the coil surface of the detection coil 62 is located on a plane composed of the X direction and the Z direction, while the coil surface of the excitation coil 64 is located on a plane composed of the X direction and the Y direction. It has become. In addition, the deposit / withdrawal unit 20 is provided with a bill insertion area 20a into which one or a plurality of banknotes are inserted in a stacked state, and the excitation coil 64 is arranged to wind around the bill insertion area 20a. Yes. Specifically, as shown in FIG. 2 and FIG. 4B, in the deposit / withdrawal unit 20, the bill insertion area 20 a is between the pair of left and right side walls 21 and before the above-described first bill feeding mechanism 24 is arranged. It is provided between the wall 27a and the rear wall 27b on which the second bill feeding mechanism 26 described above is disposed. Further, a current is supplied to the exciting coil 64 from a power source (not shown), and when a current is supplied to the exciting coil 64, a uniform magnetic field is generated in a direction orthogonal to the winding direction. As a result, the magnetic flux 66 is generated (see FIGS. 2 and 3).

  As shown in FIG. 2, at least one detection coil 62 is provided on the front wall 27 a where the first banknote feeding mechanism 24 in the deposit / withdrawal unit 20 is installed. Here, the coil surface of the detection coil 62 is arranged to be parallel to the surface of the front wall 27a facing the banknote. Further, as shown in FIG. 3, since the detection coil 62 is placed in a uniform magnetic field generated when a current flows through the excitation coil 64, an electromotive force is induced by the magnetic flux 66. More specifically, when there is no metallic foreign object in the vicinity of the detection coil 62, the electromotive force generated in the upper part of FIG. 2 and the electromotive force generated in the lower part of FIG. Same size but opposite direction. For this reason, in the detection coil 62, the electromotive force generated in the upper part of FIG. 2 and the electromotive force generated in the lower part of FIG. 2 cancel each other. Does not occur. On the other hand, when a foreign matter such as a clip is mixed in the bill placed on the placing portion 22 of the depositing / dispensing portion 20 by the operator and a metallic foreign matter is present in the vicinity of the detection coil 62 (such a metal A foreign object is indicated by a reference sign Q in FIG. 3), and an eddy current is generated in the metal foreign object by the magnetic flux 66. For this reason, the spatial magnetic field in the vicinity of the metal foreign object is affected by the magnetic field generated by the eddy current, and the uniform magnetic field is disturbed. In this case, the magnitude of the electromotive force generated in the upper part of FIG. 2 in the detection coil 62 is different from the magnitude of the electromotive force generated in the lower part of FIG. Since it starts to flow, a detection signal is generated. In this way, the metal foreign object detection unit 60 detects metal foreign objects when a current flows through the detection coil 62.

  When a metal foreign object is detected by the metal foreign object detection unit 60, the metal foreign object detection information is sent to the main body control unit 70 via the deposit / withdrawal unit control unit 72. When the metal foreign object detection information is sent from the metal foreign object detection unit 60, the main body control unit 70 causes the operation display unit 80 to display information indicating that the metal foreign object exists inside the deposit / withdrawal unit 20 or the communication unit 86. Send to an external device. As a result, the operator or the like is notified that there is a metal foreign object inside the deposit / withdrawal unit 20. In the present embodiment, the operation display unit 80 and the communication unit 86 constitute a notification unit for notifying a metal foreign object when the metal foreign object detection unit 60 detects the metal foreign object.

  According to the metal foreign object detection unit 60 having the above configuration, when no metal foreign object exists in the vicinity of the detection coil 62, the electromotive force generated in the upper part of FIG. The direction of the electromotive force generated in the portion is the same and the direction is reversed. On the other hand, when a metal foreign object exists in the vicinity of the detection coil 62, the balance between the two electromotive forces is lost and the detection coil 62 Metal foreign objects are detected by the flow of current. Here, even when the metal foreign object is relatively small or when the distance between the detection coil 62 and the metal foreign object is relatively large, the balance between the two electromotive forces is lost. In addition to foreign objects, relatively small metal foreign objects such as clips can be detected, and the number of banknotes inserted into the placement unit 22 of the deposit / withdrawal unit 20 is large. Even when the distance is relatively large, the detection coil 62 can detect the metal foreign matter. On the other hand, the metal foreign object detection unit of the prior art is difficult to detect a relatively small metal foreign object such as a clip, and can detect the metal foreign object even when the distance from the metal foreign object is relatively large. was difficult. This will be described using a conventional metal foreign matter detection unit as a comparative example as shown in FIGS.

  FIG. 5 is a perspective view schematically showing a configuration of a conventional metal foreign object detection unit 200 as a comparative example, and FIG. 6 is a side view of the conventional metal foreign object detection unit 200 shown in FIG. It is a schematic block diagram which shows the outline of a structure at the time. The metal foreign object detection unit 200 shown in FIGS. 5 and 6 has only one detection coil in which electric wires such as copper wires are wound in a rectangular shape in multiple layers, and an alternating current is passed through the detection coil. Thus, magnetic flux is generated. When a metallic foreign object approaches the detection coil, an eddy current is generated on the surface of the detection coil, a reaction magnetic flux is generated, and the electromotive force of the detection coil changes, and this change in the electromotive force is detected. By doing so, metal foreign objects are detected. However, in the metal foreign object detection unit 200 having such a configuration, the metal foreign object cannot be detected unless the metal foreign object is sufficiently close to the detection coil as compared with the metal foreign object detection unit 60 according to the present embodiment. There is a problem. That is, in the metal foreign object detection unit 200 of the prior art, the metal foreign object detection range is an area within the range of the dotted line in FIG. 6, and the height a of the detection range is relatively small. For this reason, the number of banknotes inserted into the deposit / withdrawal unit 20 of the banknote handling machine 10 is large, and the metal foreign matter mixed into the bundle of banknotes inserted into the deposit / withdrawal unit 20 and the detection coil of the metal foreign matter detection unit 200 When the distance between them becomes large, there is a possibility that the metal foreign object cannot be detected. In addition, in such a conventional metal foreign object detection unit 200, when a small metal foreign object such as a clip is located in the vicinity of the detection coil, the eddy current generated on the surface of the detection coil is also reduced, and the electromotive force of the detection coil is reduced. Since the change is also small, there is a possibility that metal foreign objects cannot be detected.

  FIG. 7 is a perspective view schematically showing a configuration of the metal foreign object detection unit 300 of another configuration of the related art as a comparative example. As shown in FIG. 7, the metal foreign object detection unit 300 includes an exciting coil 302 in which electric wires such as copper wires are wound in a rectangular shape and a plurality of electric wires such as copper wires in a rectangular shape. The excitation coil 302 and the detection coil 304 are arranged so that the coil surface of the excitation coil 302 is parallel to the coil surface of the detection coil 304. According to such a metallic foreign matter detection unit 300, when a current is passed through the exciting coil 302 by a power source (not shown) (see the arrow in FIG. 7), a magnetic flux is generated downward in FIG. Current also flows. As shown by reference symbol Q in FIG. 7, when a metal foreign object exists between the excitation coil 302 and the detection coil 304, the magnetic flux generated by the current flowing through the excitation coil 302 is disturbed. Thus, the magnitude of the current flowing through the detection coil 304 also changes. As a result, the detection coil 304 detects metal foreign matter. However, since the metal foreign object detection unit 300 configured as described above detects the metal foreign object based on a change in the magnitude of the current flowing through the detection coil 304, the metal foreign object detection unit 300 detects that the metal foreign object is relatively small. The magnitude of the flowing current hardly changes, and in this case, the change in the magnitude of the current flowing through the detection coil 304 may not be detected. Further, in the metal foreign object detection unit 300 of the prior art, the metal foreign object detection range is generally an area between the excitation coil 302 and the detection coil 304, so that the metal foreign object detection range is relatively small. .

  On the other hand, the metal foreign object detection unit 60 of the present embodiment has an excitation coil 64 through which a current flows and a detection coil 62 arranged so that its coil surface is orthogonal to the coil surface of the excitation coil 64. The metallic foreign matter is detected in the metallic foreign matter detection unit 60 when a current is passed through the detection coil 62 when the foreign matter is included in the bill inserted into the placement unit 22 of the deposit / withdrawal unit 20. It has become. According to the metal foreign object detection unit 60 having such a configuration, when a metal foreign object exists in the vicinity of the detection coil 62, the electromotive force generated in the upper part of FIG. The balance of the electromotive force generated in this portion is lost and a current flows through the detection coil 62 so that a metal foreign object is detected, so that the bill inserted into the placement portion 22 of the deposit / withdrawal portion 20 can be detected. Even when the number of sheets is large or when the metal foreign matter contained in the banknote is small, the metal foreign matter can be reliably detected.

  Moreover, the metal foreign object detection part 60 of this Embodiment detects immediately the metal foreign object contained in the said banknote, when a banknote is thrown into the mounting part 22 of the deposit or withdrawal part 20. FIG. Alternatively, the metallic foreign matter contained in the banknote may be detected after a predetermined time has elapsed since the banknote was inserted into the placement unit 22 of the deposit / withdrawal unit 20. That is, in the former case, when a current flows through the detection coil 62, detection information of the metal foreign object is immediately sent from the metal foreign object detection unit 60 to the main body control unit 70 via the deposit / withdrawal unit control unit 72. . In the former case, the instantaneous change in the current flowing through the detection coil 62 increases, and by detecting such an instantaneous change in the current flowing through the detection coil 62, the metal foreign object can be detected more reliably. Will be able to. On the other hand, in the latter case, even if a current once flows through the detection coil 62, if a current does not flow through the detection coil 62 after a predetermined time has elapsed, the metal foreign object is detected from the metal foreign object detection unit 60 to the main body control unit 70. Detection information is not sent. For example, when a ring is attached to the finger of an operator who is about to insert a bill into the placement unit 22 of the deposit / withdrawal unit 20, such a ring is used as a metal foreign object detection unit when the former operation is performed. However, when the latter operation is performed, a ring or the like attached to the operator's finger is erroneously detected as a metal foreign object by the metal foreign object detection unit 60. Can be suppressed.

  Further, the metal foreign object detection unit 60 is configured to send metal foreign object detection information by the detection coil 62 to the main body control unit 70 when the shutter 28 is in a closed state (see FIGS. 9 to 11). Also good. That is, when the shutter 28 is in the opened state (see FIG. 8), even if a current flows through the detection coil 62, the metal foreign object detection unit 60 does not send the metal foreign object detection information to the main body control unit 70. Become. Even when such an operation is performed, it is possible to prevent a ring attached to the operator's finger from being erroneously detected as a metal foreign object by the metal foreign object detection unit 60. When such operation is performed, the main body control unit 70 or the deposit / withdrawal unit control unit 72 uses the first bill feeding mechanism 24 when the metal foreign object detection information is sent from the metal foreign object detection unit 60. Instead of performing the bill feeding operation, the shutter 28 may be opened instead. As a result, the operator can access the inside of the deposit / withdrawal unit 20, and can take out a metal foreign object such as a clip from the bill placed on the placement unit 22.

  Next, the positions of the plurality of detection coils 62 of the metal foreign object detection unit 60 actually arranged in the deposit / withdrawal unit 20 of the banknote handling machine 10 shown in FIG. 1 will be described with reference to FIGS. 4A and 4B. As described above, FIG. 4A is a perspective view schematically showing the positions of the plurality of detection coils 62 of the metal foreign object detection unit 60 that is actually arranged in the deposit / withdrawal unit 20 of the banknote handling machine 10 shown in FIG. 4B is a top view schematically showing the positions of the plurality of detection coils 62 of the metal foreign object detection unit 60 when the deposit / withdrawal unit 20 shown in FIG. 4A is viewed from above. In FIG. 4B, the metal foreign object detection range by each detection coil 62 of the metal foreign object detector 60 is indicated by a two-dot chain line.

  As shown in FIG. 4A, at least one detection coil 62 of the metallic foreign matter detection unit 60 is at least one in the height direction of the banknote placed on the placement unit 22 in a standing state (that is, the vertical direction in FIG. 4A). A plurality (two in the example shown in FIG. 4A) are preferably arranged. In the case where a plurality of detection coils 62 are provided in the height direction of a bill placed on the placement unit 22 in a standing position, the bill is inserted into the placement unit 22 of the deposit / withdrawal unit 20 by the operator. The metallic foreign matter can be detected by at least one detection coil 62 among the plurality of detection coils 62 regardless of the position of the bill in the height direction of the bill. Become.

  As shown in FIGS. 4A and 4B, the detection coil 62 of the metal foreign object detection unit 60 is arranged in the width direction of the banknotes placed on the placement unit 22 in a standing position (that is, left and right in FIGS. 4A and 4B). At least one, preferably a plurality (three in the example shown in FIGS. 4A and 4B). When a plurality of detection coils 62 are provided in the width direction of the bill placed on the placement portion 22 in a standing position, the bill is inserted into the placement portion 22 of the deposit / withdrawal portion 20 by the operator. Sometimes, the metal foreign matter can be detected by at least one detection coil 62 out of the plurality of detection coils 62 regardless of the position in the width direction of the banknote.

  Further, as shown in FIG. 4B, the detection coil 62 of the metal foreign object detection unit 60 is a side facing the side edge of the banknote placed on the placement unit 22 in the standing state in the deposit / withdrawal unit 20 (that is, The left and right side walls 21) are also provided. In this case, when a bill is inserted into the placement unit 22 of the deposit / withdrawal unit 20 by the operator, even if the side edge of the bill is clipped, the side facing the side edge of the bill The clip can be detected by the detection coil 62 provided in the.

  4B, the detection coil 62 of the metal foreign object detection unit 60 is also provided on the rear wall 27b side where the second bill feeding mechanism 26 in the deposit / withdrawal unit 20 is installed. In this case, when the banknote is fed from the machine body of the banknote handling machine 10 to the deposit / withdrawal unit 20 by the transport unit 40, if the banknote contains a metal foreign object such as a clip, the rear wall 27b side A metal foreign object can be detected by the detection coil 62 provided in the.

  According to the banknote handling machine 10 of the present embodiment configured as described above, the metal foreign object detection unit 60 disposed in the deposit / withdrawal unit 20 includes an excitation coil 64 through which an electric current is passed, and its coil surface is excited. The detection coil 62 is disposed so as to be orthogonal to the coil surface of the coil 64, and when the banknote inserted into the deposit / withdrawal unit 20 contains a metal foreign object such as a clip, a current is supplied to the detection coil 62. The metallic foreign matter is detected by flowing. According to such a banknote handling machine 10, when there is no metal foreign object in the vicinity of the detection coil 62, the electromotive force generated in the upper part of FIG. 2 and the lower part of FIG. 2 in the detection coil 62. The direction of the electromotive force generated is the same and the direction is reversed. On the other hand, when there is a metal foreign object in the vicinity of the detection coil 62, the balance between the two electromotive forces is lost and current flows through the detection coil 62. The metallic foreign matter is detected by flowing, and the balance between the two electromotive forces is lost even when the metallic foreign matter is relatively small or the distance between the detection coil 62 and the metallic foreign matter is relatively large. It becomes like this. Therefore, in the metal foreign object detection unit 60 according to the present embodiment, the distance between the detection coil 62 and the metal foreign object as compared with the conventional metal foreign object detection units 200 and 300 as shown in FIGS. The metal foreign matter can be detected even when the metal foreign matter is small or the metal foreign matter is small. Therefore, the metal foreign matter can be detected even when the number of banknotes inserted into the deposit / withdrawal unit 20 is large or the metal foreign matter contained in the banknote is small. It can be detected reliably.

  In the banknote handling machine 10 according to the present embodiment, as described above, the banknote insertion area 20a (specifically, a pair of left and right side walls) in which one or a plurality of banknotes are input in a stacked state in the deposit / withdrawal unit 20. 21 and an area between the front wall 27a and the rear wall 27b), and the exciting coil 64 of the metallic foreign object detection unit 60 is arranged so as to wrap around the bill insertion area 20a of the deposit / withdrawal unit 20. Has been. Further, at least one detection coil 62 of the metallic foreign matter detection unit 60 is provided on the deposit / withdrawal unit 20 on the side where the first banknote feeding mechanism 24 is installed.

  In this case, at least one, preferably a plurality of detection coils 62 of the metal foreign object detection unit 60 may be arranged in the height direction of the banknotes placed on the placement unit 22 in a standing state. . Moreover, the detection coil 62 of the metal foreign material detection part 60 may be arrange | positioned at least 1 in the width direction of the banknote mounted in the mounting part 22 in the standing position, Preferably two or more may be arrange | positioned. Moreover, the detection coil 62 of the metal foreign object detection part 60 may be provided also in the depositing / withdrawing part 20 on the side facing the side edge of the banknote placed on the placement part 22 in a standing position.

  In the banknote handling machine 10 of the present embodiment, as described above, the metal foreign object detection unit 60 detects the metal foreign object contained in the banknote when the banknote is inserted into the deposit / withdrawal unit 20. May be. In other words, when a current flows through the detection coil 62, metal foreign matter detection information may be immediately sent from the metal foreign matter detection unit 60 to the main body control unit 70 via the deposit / withdrawal unit control unit 72. Alternatively, the metal foreign object detector 60 may detect a metal foreign object contained in the banknote after a predetermined time has elapsed since the banknote was inserted into the deposit / withdrawal unit 20. In other words, even if a current once flows through the detection coil 62, if no current flows through the detection coil 62 after a predetermined time has passed, the metal foreign object detection unit 60 sends the metal foreign object detection information to the main body control unit 70. You may not be able to. In the latter case, it is possible to prevent a ring or the like worn on the operator's finger from being erroneously detected as a metal foreign object by the metal foreign object detection unit 60.

  Further, as described above, the metal foreign object detection unit 60 may detect the metal foreign object contained in the banknote in the deposit / withdrawal unit 20 when the shutter 28 is in a closed state. . Even in this case, it is possible to prevent a ring or the like worn on the operator's finger from being erroneously detected as a metal foreign object by the metal foreign object detection unit 60. In this case, when a metal foreign object is detected by the metal foreign object detection unit 60, the shutter 28 may be opened so that the inside of the deposit / withdrawal unit 20 can be accessed.

  Further, in the banknote handling machine 10 of the present embodiment, as described above, when a metal foreign object is detected by the metal foreign object detection unit 60, this is displayed by the operation display unit 80 or by the communication unit 86. Or may be notified to an operator or the like.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. 14 and 15 are diagrams showing the configuration of the metal foreign object detection unit according to the present embodiment. 14 is a perspective view schematically showing the configuration of the metal foreign object detection unit according to the present embodiment, and FIG. 15 is a configuration of the metal foreign object detection unit shown in FIG. 14 when viewed from the front side. It is a schematic block diagram which shows an outline.

  Unlike the metal foreign object detector 60 according to the first embodiment as shown in FIGS. 2 and 3 and the like, the metal foreign object detector 100 according to the present embodiment includes a detection coil 102 and an excitation coil 104 integrally formed of resin. The metal foreign object detector 100 is formed in one substrate by the detection coil 102, the excitation coil 104, and the plate-like insulator 108.

  The detection coil 102 is made of a wire in which a copper wire or the like is wound in a rectangular shape. The coil surface of the detection coil 102 is located on a plane composed of the X direction and the Y direction in FIG. . Specifically, the detection coil 102 is configured by, for example, an electric wire wound in four layers in the Z direction. Further, the exciting coil 104 is formed by winding a wire such as a copper wire around the detection coil 102, and the coil surface of the exciting coil 104 is on a plane composed of the Y direction and the Z direction in FIG. positioned. As described above, in the metal foreign object detection unit 100 according to the second embodiment, the detection coil 102 and the excitation coil 104 are arranged so that the coil surface of the detection coil 102 is orthogonal to the coil surface of the excitation coil 104.

  The metal foreign object detection unit 100 having the configuration shown in FIGS. 14 and 15 is provided on the front wall 27a where the first banknote feeding mechanism 24 in the depositing / dispensing unit 20 of the banknote handling machine 10 as shown in FIG. 1 is installed. At least one is provided. Note that at least one, preferably a plurality of such metal foreign object detectors 100 may be arranged in the height direction of the banknote placed on the placement unit 22 in a standing position. Moreover, at least one, preferably a plurality of metal foreign matter detectors 100 having the above-described configuration may be arranged in the width direction of the banknote placed on the placement unit 22 in a standing state. Moreover, the metal foreign object detection part 100 of said structure may be provided also in the side facing the side edge of the banknote mounted in the mounting part 22 in the depositing / dispensing part 20 in the standing position.

  A current is supplied to the exciting coil 104 from a power source (not shown), and when a current is supplied to the exciting coil 104, a uniform magnetic field is generated in a direction perpendicular to the winding direction. Magnetic flux 106 is generated on both sides of 108.

  Since the detection coil 102 is placed in a uniform magnetic field generated when a current flows through the excitation coil 104, an electromotive force is induced by the magnetic flux 106. More specifically, when there is no metal foreign object in the vicinity of the detection coil 102, an electromotive force generated in the heel side portion of FIG. 14 and an electromotive force generated in the near side portion of FIG. Are the same size but in the opposite direction. For this reason, in the detection coil 102, the electromotive force generated in the heel side portion of FIG. 14 and the electromotive force generated in the near side portion of FIG. 14 cancel each other, and no current flows through the detection coil 102. Does not occur. On the other hand, when a metal foreign object such as a clip is mixed in a bundle of banknotes placed on the placement part 22 of the depositing / dispensing part 20 by an operator and a metal foreign object exists in the vicinity of the metal foreign object detection part 100, An eddy current is generated in the metal foreign matter by the magnetic flux 106. For this reason, the spatial magnetic field in the vicinity of the metal foreign object is affected by the magnetic field generated by the eddy current, and the uniform magnetic field is disturbed. In this case, the magnitude of the electromotive force generated in the back portion of FIG. 14 in the detection coil 102 is different from the magnitude of the electromotive force generated in the front side portion of FIG. Detection signal is generated. In this way, the metal foreign object detector 100 detects a metal foreign object when a current flows through the detection coil 102. Note that the metal foreign object detection range by the metal foreign object detection unit 100 is an area within a range surrounded by a two-dot chain line in FIG.

  The metal foreign object detection unit 100 having the above-described configuration is similar to the metal foreign object detection unit 60 according to the first embodiment, and the excitation coil 104 through which an electric current flows and the coil surface of the coil foreign object detection unit 100 are the coil surface of the excitation coil 104. And when the bill inserted into the deposit / withdrawal unit 20 contains a metal foreign object such as a clip, a current flows through the detection coil 102 to cause the metal foreign object to flow. Is to be detected. According to such a metallic foreign matter detection unit 100, when there is no metallic foreign matter in the vicinity of the detection coil 102, the magnitude of the electromotive force generated in the back side of FIG. The magnitude of the electromotive force generated in the portion on the side is the same and the direction is reversed. On the other hand, when a metal foreign object exists near the detection coil 102, the balance between the two electromotive forces is lost. A metal foreign object is detected when a current flows through the detection coil 102. Even when the metal foreign object is relatively small or when the distance between the detection coil 102 and the metal foreign object is relatively large, the above two The balance of electromotive force will be lost. Therefore, in the metal foreign object detection unit 100 according to the present embodiment, the distance between the detection coil 102 and the metal foreign object as compared with the conventional metal foreign object detection units 200 and 300 as shown in FIGS. The metal foreign matter can be detected even when the metal foreign matter is small or the metal foreign matter is small. Therefore, the metal foreign matter can be detected even when the number of banknotes inserted into the deposit / withdrawal unit 20 is large or the metal foreign matter contained in the banknote is small. It can be detected reliably. In the present embodiment, since the metal foreign object detection unit 100 is configured in one substrate by the detection coil 102, the excitation coil 104, and the plate-like insulator 108, the deposit / withdrawal unit 20 includes the bill insertion area 20a. Compared to the first embodiment in which the excitation coil 64 is wound around the installation, the metal foreign object detection unit 100 is easily installed in the deposit / withdrawal unit 20, and the work load at the time of manufacture or maintenance of the banknote handling machine 10 is simplified. Can be reduced.

[Third Embodiment]
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. 16 and 17 are diagrams showing a configuration of the banknote handling machine according to the present embodiment. 16 is a schematic configuration diagram illustrating a schematic configuration of the banknote handling machine, and FIG. 17 is a side view illustrating a schematic configuration of a banknote bundle transport mechanism in the banknote processing machine illustrated in FIG. 16.

  Compared with the banknote handling machine 10 according to the first embodiment shown in FIG. 1 and the like, the banknote handling machine 10a according to the present embodiment has a banknote bundle transport mechanism 110 for feeding a banknote bundle into the deposit / withdrawal unit 20. The only difference is the provided point, and the other configuration is substantially the same as that of the banknote handling machine 10 according to the first embodiment. In describing the configuration of the banknote handling machine 10a according to the present embodiment, the same components as those of the banknote handling machine 10 according to the first embodiment shown in FIG. Omitted.

  A wall 111 is provided in the vicinity of the banknote processing machine 10a according to the present embodiment, and the operator can handle the banknote processing machine 10a from the opposite side across the wall 111 (that is, from the area on the left side of the wall 111 in FIG. 16). In contrast, banknote depositing and withdrawal processing is performed. Specifically, the banknote bundle transport mechanism 110 is installed in the depositing / dispensing part 20 of the banknote handling machine 10a so as to penetrate the wall 111, and the operator is on the opposite side of the banknote handling machine 10a across the wall 111. Is configured to input a bundle of banknotes to be deposited into the banknote handling machine 10a into the banknote bundle transport mechanism 110, or to receive a bundle of banknotes dispensed from the banknote handling machine 10a from the banknote bundle transport mechanism 110. ing. Moreover, as shown in FIG. 16, the operation display part 112, such as a touch panel, is provided in the wall 111, The said operation display part 112 displays the information which concerns on the banknote processing machine 10a, the processing status of a banknote, etc. In addition, the operator can input various commands to the main body control unit 70 of the banknote processing machine 10a through the operation display unit 112. Thus, in this Embodiment, an operator comes to operate the banknote processing machine 10a by the operation display part 112 on both sides of the wall 111, and the said operator can touch a banknote processing machine 10a directly. Therefore, the security of the banknote handling machine 10a can be improved.

  As shown in FIG. 17, the banknote bundle transport mechanism 110 has a pair of upper and lower transport belts 114, 116. When these transport belts 114, 116 circulate in the direction indicated by the arrows in FIG. Thus, a bundle of banknotes input into the banknote bundle transport mechanism 110 is collectively transported to the deposit / withdrawal unit 20. On the other hand, when the conveyor belts 114 and 116 circulate in the direction opposite to the direction indicated by the arrows in FIG. 17 in the banknote bundle transport mechanism 110, the transport belt 40 feeds the banknote handling machine 10a to the deposit / withdrawal section 20. The bundle of bills is sent to the operator's hand by the bill bundle transport mechanism 110 in a lump.

  In the present embodiment, the banknote bundle transport mechanism 110 is provided with a metal foreign body detector 120 for detecting a metal foreign body contained in the banknote bundle transported by the banknote bundle transport mechanism 110. Specifically, as shown in FIG. 17, the metal foreign object detection unit 120 includes a detection coil 122 arranged in a pair of upper and lower sides corresponding to the respective transport belts 114 and 116, and a banknote formed by the respective transport belts 114 and 116. And an exciting coil 124 provided to wind the bundle conveyance region. Here, each detection coil 122 is made of a wire in which copper wires or the like are wound in a rectangular shape, and the coil surface of the detection coil 122 is located on a plane extending in the left-right direction in FIG. Yes. Further, the exciting coil 124 is configured such that an electric wire such as a copper wire is wound around the conveyance area of the banknote bundle by the conveying belts 114 and 116, and the coil surface of the exciting coil 124 is orthogonal to the paper surface of FIG. It is located on a plane extending in the direction. As described above, in the metal foreign object detection unit 120 according to the third embodiment, the detection coil 122 and the excitation coil 124 are arranged so that the coil surface of the detection coil 122 is orthogonal to the coil surface of the excitation coil 124.

  A current is supplied to the exciting coil 124 from a power source (not shown), and when a current is supplied to the exciting coil 124, a uniform magnetic field is generated in a direction orthogonal to the winding direction. Magnetic flux 126 is generated near the belts 114 and 116, respectively.

  Since the detection coil 122 is placed in a uniform magnetic field generated when a current is passed through the excitation coil 124, an electromotive force is induced by the magnetic flux 126. More specifically, when there is no metallic foreign object in the vicinity of the detection coil 122, the electromotive force generated in the detection coil 122 on the heel side of the paper surface of FIG. 17 and the front side of the paper surface of FIG. The direction of the electromotive force is the same and the direction is reversed. For this reason, in the detection coil 122, the electromotive force generated in the heel side portion of the paper surface of FIG. 17 and the electromotive force generated in the near side portion of the paper surface of FIG. No detection signal is generated. On the other hand, when a banknote bundle conveyed by the banknote bundle transport mechanism 110 is mixed with a metal foreign object such as a clip and the banknote bundle mixed with the metal foreign object approaches the metal foreign object detection unit 120, the metal foreign object An eddy current is generated by the magnetic flux 126. For this reason, the spatial magnetic field in the vicinity of the metal foreign object is affected by the magnetic field generated by the eddy current, and the uniform magnetic field is disturbed. In this case, in the detection coil 122, the magnitude of the electromotive force generated in the back portion of the paper surface of FIG. 17 is different from the magnitude of the electromotive force generated in the near side portion of the paper surface of FIG. Since a current flows through the coil 122, a detection signal is generated. In this way, the metal foreign object detector 120 detects a metal foreign object when a current flows through the detection coil 122.

  The metal foreign object detection unit 120 having the above-described configuration is similar to the metal foreign object detection unit 60 according to the first embodiment and the metal foreign object detection unit 100 according to the second embodiment. And a detection coil 122 arranged so that its coil surface is orthogonal to the coil surface of the exciting coil 124, and the banknote bundle transported by the banknote bundle transport mechanism 110 contains a metal foreign object such as a clip. When the current flows through the detection coil 122, the metal foreign object is detected. According to such a metallic foreign matter detection unit 120, when no metallic foreign matter is present in the vicinity of the detection coil 122, the electromotive force generated in the back side of the paper surface of FIG. 17 in the detection coil 122 and the paper surface of FIG. The direction of the electromotive force generated in the front side of the coil is the same and the direction is reversed. On the other hand, when a metallic foreign object exists in the vicinity of the detection coil 122, the balance between the two electromotive forces is lost. A metal foreign object is detected when a current flows through the detection coil 122. Even when the metal foreign object is relatively small or when the distance between the detection coil 122 and the metal foreign object is relatively large, the above two The balance of electromotive force will be lost. Therefore, in the metal foreign object detection unit 120 according to the present embodiment, the distance between the detection coil 122 and the metal foreign object as compared with the conventional metal foreign object detection units 200 and 300 as shown in FIGS. Since the metal foreign object can be detected even when the metal foreign object is small or the metal foreign object is small, even when the number of banknote bundles conveyed by the banknote bundle conveying mechanism 110 is large or when the metal foreign object contained in the banknote bundle is small. Metal foreign objects can be reliably detected. In the present embodiment, the metal foreign object detection unit 120 detects metal foreign objects such as clips included in the banknote bundle conveyed by the banknote bundle conveyance mechanism 110, and the metal foreign object detection unit 120 moves. Compared with the case of detecting a metal foreign object (that is, a stationary metal foreign object) included in the banknote placed on the placement unit 22, the metal foreign object is detected with higher accuracy and accuracy. A foreign object can be detected.

  In the present embodiment, the banknote bundle transport mechanism 110 is configured to transport the banknote bundle by the pair of transport belts 114 and 116, but instead of transporting the banknote bundle by the pair of transport belts 114 and 116, The banknote bundle may be transported by placing the banknote bundle on the tray and moving the tray. Even in such a case, by providing a metal foreign object detection unit having the same configuration as the metal foreign object detection unit 120, it is possible to detect a metal foreign object contained in a banknote bundle that is placed on the tray and moved. .

  In addition, the paper sheet processing apparatus by this invention is not limited to the structure of the banknote processing machines 10 and 10a by said each embodiment. As the paper sheet processing apparatus according to the present invention, an apparatus for processing paper sheets such as checks and gift certificates other than banknotes may be used. In this case, a metal having the same configuration as that of the metal foreign matter detection unit 60 and the metal foreign matter detection unit 100 is used as a paper sheet feeding unit for feeding paper sheets from the outside to the inside of the housing of the paper sheet processing apparatus. A foreign object detector may be installed. Moreover, the paper sheet input unit in which the metal foreign object detection unit according to the present invention is installed is not necessarily limited to the one provided with the first banknote feeding mechanism 24 such as the feed roller 24b. Moreover, the metallic foreign matter detection part by this invention is installed in places other than the paper sheet input part (specifically the depositing / withdrawing part 20 in the banknote processing machine 10 shown, for example in FIG. 1) in a paper sheet processing apparatus. Also good. Moreover, the metal foreign object detection part by this invention is installed in the conveyance path of the coin in the coin processing apparatus which performs various processes, such as a depositing / withdrawing process of a coin, and the coin which remains in the said conveyance path is detected by the metal foreign object detection part. You may do it.

10, 10a Banknote processing machine 12 Upper housing 14 Lower housing 20 Deposit / withdrawal section 20a Banknote insertion area 21 Side wall 22 Placement section 23 Bottom 23a Placement member 23b Space 24 First bill delivery mechanism 24a Kicker roller 24b Feed roller 24c Opposing roller 25 Foreign matter receiving portion 26 Second bill feeding mechanism 26a Kicker roller 26b Feed roller 26c Opposing roller 27a Front wall 27b Rear wall 28 Shutter 30 Guide portion 34 Holding member 36 First partition member 38 Second partition member 40 41 Conveying unit 42 Identification unit 44 Skew correction unit 46 Temporary holding unit 48 Positioning unit 49 Counterfeit bill storage unit 50 Banknote storage and feeding cassette 52 Banknote storage cassette 60 Metal foreign matter detection unit 62 Detection coil 64 Excitation coil 66 Magnetic flux 70 Main body control Unit 72 Deposit / withdrawal unit control unit 80 Operation display unit 82 Storage unit 84 Printing Unit 86 Communication unit 100 Metal foreign matter detection unit 102 Detection coil 104 Excitation coil 106 Magnetic flux 108 Insulator 110 Bill bundle transport mechanism 111 Wall 112 Operation display units 114 and 116 Transport belt 120 Metal foreign matter detection unit 122 Detection coil 124 Excitation coil 126 Magnetic flux 200 Prior Art Metal Foreign Object Detection Unit 300 Prior Art Metal Foreign Object Detection Unit 302 Excitation Coil 304 Detection Coil

Claims (12)

A housing,
A paper sheet input unit for inputting paper sheets from the outside to the inside of the housing;
An excitation coil that is disposed in the paper sheet input unit and through which an electric current flows, and a detection coil that is disposed so that the coil surface thereof is orthogonal to the coil surface of the excitation coil, the paper sheet input A metal foreign object detection unit that detects the metal foreign object when a current flows through the detection coil when the paper sheet to be fed into the unit contains a metal foreign object,
A paper sheet processing apparatus. The paper sheet input unit is provided with a paper sheet input area in which one or a plurality of the paper sheets are input in a stacked state.
The paper sheet processing apparatus according to claim 1, wherein the excitation coil of the metal foreign matter detection unit is disposed so as to wrap around the paper sheet input region of the paper sheet input unit. The paper sheet loading unit is provided with a feeding mechanism that feeds the paper sheets loaded into the paper sheet loading unit one by one into the housing,
The paper sheet processing apparatus according to claim 1, wherein the detection coil of the metal foreign object detection unit is provided on a side where the feeding mechanism is installed in the paper sheet feeding unit. The paper sheet input unit is provided with a placement unit on which one or more of the paper sheets are placed in a standing state,
The paper sheet processing according to claim 3, wherein at least one of the detection coils of the metal foreign object detection unit is disposed in a height direction of the paper sheets placed in a standing state on the placement unit. apparatus.   The paper sheet processing apparatus according to claim 4, wherein at least one of the detection coils of the metal foreign object detection unit is disposed in a width direction of the paper sheets placed in a standing state on the placement unit. .   The detection coil of the metallic foreign matter detection unit is also provided on a side of the paper sheet feeding unit that faces the side edge of the paper sheet placed in a standing state on the placement unit. The paper sheet processing apparatus according to claim 4 or 5.   The metal foreign matter detection unit is configured to detect the metal foreign matter included in the paper sheet when the paper sheet is input to the paper sheet input unit. The paper sheet processing apparatus according to claim 1.   The metal foreign object detection unit is configured to detect the metal foreign object contained in the paper sheet after a predetermined time has elapsed since the paper sheet was input into the paper sheet input unit. The paper sheet processing apparatus according to any one of claims 1 to 6. The paper sheet input unit is provided with a shutter that can selectively open and close the access to the inside of the paper sheet input unit.
2. The metal foreign object detection unit is configured to detect the metal foreign object contained in the paper sheet in the paper sheet input unit when the shutter is in a closed state. The paper sheet processing apparatus as described in any one of thru | or 6.   The paper sheet processing apparatus according to claim 9, wherein when the metal foreign object is detected by the metal foreign object detection unit, the shutter is opened to allow access to the inside of the sheet input unit.   The paper sheet processing apparatus according to any one of claims 1 to 10, further comprising a notification unit for notifying the metal foreign object when the metal foreign object detection unit is detected. A housing, a paper sheet feeding unit for feeding paper sheets from the outside to the inside of the housing, and the paper sheet feeding unit, the exciting coil, and the coil surface of the exciting coil A paper sheet processing method by a paper sheet processing apparatus including a metal foreign object detection unit having a detection coil arranged to be orthogonal to a coil surface,
Flowing an electric current through the exciting coil of the metallic foreign object detector;
A step of detecting the metal foreign object by causing a current to flow through the detection coil of the metal foreign object detection unit when the paper sheet input to the paper sheet input unit includes a metal foreign object;
A paper sheet processing method comprising:

Images