JP2020083609A - Paper sheet conveying device - Google Patents

Abstract

To improve manufacturing cost and maintenance property.SOLUTION: A paper sheet conveying device that drives a conveyance roller 4 and conveys a paper sheet when a bill M is arranged at a predetermined charge position includes: a money payment detection sensor 5a which detects the paper sheet arranged on the charge position on the upstream side; an attitude detection sensor 5b which detects the paper sheet arranged at the charge position on the downstream side; and a control part 10 which determines absence of a conveyance error when the detection result of the money payment detection sensor 5a is presence of the paper sheet with reference to the detection result of the money payment detection sensor 5a at the time when the detection result of the attitude detection sensor 5b is changed to absence of the paper sheet from presence of the paper sheet.SELECTED DRAWING: Figure 3

Description

The present invention relates to a sheet conveying device.

In a paper sheet conveying device for conveying paper sheets such as banknotes, it is common to monitor whether or not a conveyance error such as a paper jam occurs in the conveyance path. An example of this type of paper sheet conveying device is a paper sheet detection sensor including a light projecting portion and a light receiving portion, which are arranged at positions facing each other across a conveying path, and a light receiving portion for receiving light emitted from the light projecting portion. In some cases, the presence or absence of a transport error is detected based on the light receiving state of. That is, when the light receiving unit does not receive the light of the light projecting unit continuously for a preset time, it is determined that a sheet exists between the light receiving unit and the light receiving unit and the light receiving unit. It is possible to detect that a transport error has occurred in (1).

Japanese Unexamined Patent Publication No. 2018-142218

By the way, in the above-described paper sheet conveyance device, when a paper sheet is jammed between the paper sheet detection sensor arranged on the upstream side and the paper sheet detection sensor arranged on the downstream side, it cannot be detected. .. For this reason, it is necessary to dispose the sheet detection sensors at intervals shorter than the length of the sheet to be conveyed on the path for detecting the conveyance error, which is disadvantageous in terms of manufacturing cost. Such a problem occurs, for example, when the upstream side sheet detection sensor detects a sheet and the downstream side sheet detection sensor does not detect the sheet even after a predetermined time has elapsed, a conveyance error occurs. If it is estimated that it is, it will be possible to solve. That is, even if a conveyance error occurs between the paper sheet detection sensors, it can be detected, and the manufacturing cost can be reduced.

However, for example, in the paper sheet inlet, even if the paper sheet that has been once inserted is pulled out, the same detection result as that of the transport error is obtained. As a result, even if no transport error has occurred, work for eliminating the transport error must be performed, which is not always preferable in consideration of maintenance.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a paper sheet transporting device capable of improving manufacturing cost and maintenance.

In order to achieve the above object, the paper sheet conveying apparatus according to the present invention is a paper sheet conveying apparatus that drives a conveying mechanism to convey a paper sheet when the paper sheet is arranged at a predetermined input position, A first sheet detection sensor for detecting the sheet placed at the loading position on the upstream side; and a second sheet detection sensor for detecting the sheet placed on the loading position on the downstream side. , Referring to the detection result of the first paper sheet detection sensor at the time when the detection result of the second paper sheet detection sensor changes from the presence of paper sheet to the absence of paper sheet, It is characterized in that it is determined that there is no conveyance error when the detection result is a sheet.

Further, the present invention further includes a third paper sheet detection sensor arranged in a portion on the downstream side of the second paper sheet detection sensor in the above-described paper sheet conveyance device, and the second paper sheet detection device. When the third sheet detection sensor continuously detects the absence of the sheet from the time when the detection result of the sensor is the absence of the sheet to the time when the sheet is not present, the second detection is performed. It is characterized in that the detection result of the first sheet detection sensor at the time when the detection result of the sheet detection sensor changes from the presence of the sheet to the absence of the sheet.

Further, the present invention is characterized in that, in the above-described paper sheet conveying apparatus, a conveyance error is determined when the detection result of the referred first paper sheet detection sensor is no paper sheet.

According to the present invention, when the second sheet detection sensor provided on the downstream side of the loading position detects the presence of a sheet and the absence of a sheet, the first sheet detection sensor provided on the upstream side of the loading position. If there is a paper sheet, the paper sheet has not been conveyed to the downstream side of the second paper sheet detection sensor. In other words, it can be determined that the paper sheet has been pulled out from the loading position, and therefore the paper jam occurs. No transport error such as Therefore, even if the second sheet detection sensor detects the absence of a sheet from the presence of the sheet and then the sheet detection sensor provided on the downstream side of the second sheet detection sensor detects the absence of the sheet. There is no need to perform work for clearing paper jams, which is advantageous in terms of maintenance. Further, even if a gap larger than the length of the conveyed paper sheet is set between the second paper sheet detection sensor and the paper sheet detection sensor on the downstream side, the above-mentioned detection accuracy may be affected. It is also advantageous in terms of manufacturing cost.

FIG. 1 is a sectional side view conceptually showing a banknote processing unit of an automatic change dispenser to which a paper sheet transporting device according to an embodiment of the present invention is applied. FIG. 2 is a plan view conceptually showing a main part of the banknote processing section shown in FIG. 1. FIG. 3 is a block diagram showing a control system of the banknote processing unit shown in FIG. FIG. 4 shows detection states of the first paper sheet detection sensor and the second paper sheet detection sensor applied to the paper sheet processing unit shown in FIG. 1, and the paper sheet is conveyed downstream of the conveyance path. It is a timing chart at the time of playing. FIG. 5 shows the detection states of the first paper sheet detection sensor and the second paper sheet detection sensor applied to the paper sheet processing unit shown in FIG. 1, when the paper sheet is pulled out from the input port. 2 is a timing chart of.

Hereinafter, preferred embodiments of a sheet conveying apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show a paper sheet transporting device according to an embodiment of the present invention. The paper sheet transporting device illustrated here is one for transporting banknotes (paper sheets) M in a banknote processing unit of an automatic change machine, and is provided with a plurality of banknote storages 2A, 2B, 2C inside the device housing 1. At the same time, a transport path 3 that constitutes a transport space for bills M is provided inside the device housing 1. The banknote storages 2A, 2B, 2C store a plurality of types of banknotes M having different denominations by denomination. In the illustrated example, a first banknote storage 2A for storing 5,000 yen banknotes, a second banknote storage 2B for storing 1,000 yen banknotes, and a first banknote containing a mixture of 10,000 yen and 2,000 yen banknotes. The 3 banknote storage 2C is sequentially arranged in parallel from the front part to the rear part of the device housing 1. The conveyance path 3 conveys the banknotes M in a sideways posture in which the long side Ma is the tip and is substantially horizontal, and has a slot 1a provided on the front surface of the device housing 1 and a plurality of banknote storages. It is provided so as to connect between 2A, 2B, and 2C. In the present embodiment, the introduction passage portion 3a provided between the insertion slot 1a and the first banknote storage case 2A in the front row, and the upper side of the three banknote storage cases 2A, 2B, 2C from the introduction passageway 3a. The transport path 3 is configured to have a distribution path portion 3b provided so as to pass therethrough. Although not shown in the drawing, a plurality of pairs of conveying rollers (conveying mechanisms) 4 are arranged at a site over the entire length of the conveying path 3. The mutual distance between the conveyance rollers 4 along the conveyance direction is set to be smaller than the short side Mb of the smallest bill M. The smallest banknote M is a banknote M having the smallest size among a plurality of kinds of banknotes M to be conveyed. Therefore, when the transport roller 4 is driven, it is possible to transport the bill M in the transport path 3 regardless of the type of the bill M.

The introduction passage portion 3a is a portion that takes in and discriminates the banknotes M that have been inserted into the insertion opening 1a, and is inclined toward the rear of the device housing 1 so as to be gradually downward and then curved upward. It is inclined so that it is gradually upward toward the rear. The introduction passage portion 3a is provided with a deposit detection sensor (first sheet detection sensor) 5a, a posture detection sensor (second sheet detection sensor) 5b, and a discrimination sensor (third sheet detection sensor) 5c. There is.

The deposit detection sensor 5a has a main function of detecting whether or not the bill M is inserted into the transport path 3 through the insertion port 1a. In the present embodiment, only the deposit detection sensor 5a is provided at the most upstream portion of the introduction passage portion 3a. As shown in FIG. 2, the deposit detection sensor 5a in the width direction of the transport path 3 is located on the center plane that divides the introduction passage 3a into two halves.

The attitude detection sensor 5b has a main function of detecting whether or not the banknote M inserted into the insertion slot 1a has a predetermined conveyance attitude, and is located at a position downstream of the deposit detection sensor 5a. One is provided on each of the left and right sides. The mutual distance d1 between the attitude detection sensors 5b is smaller than the longest side Ma of the smallest bill M. The interval d2 between the deposit detection sensor 5a and the attitude detection sensor 5b along the transport direction is set to be smaller than the shortest side Mb of the bill M. That is, in this banknote processing unit, when the banknote M is inserted in the correct posture with respect to the slot 1a as shown by the chain double-dashed line in FIG. 2, in other words, the long side Ma at the tip is in the transport direction. When the banknote M is inserted into the transport path 3 through the insertion slot 1a in a posture substantially orthogonal to the banknote M, regardless of the type of the banknote M, the deposit detection sensor 5a and the two attitude detection sensors 5b simultaneously display "there is a banknote." Will be detected. On the other hand, as shown by the one-dot chain line in FIG. 2, when the bill M′ is inserted into the insertion slot 1a with the long side Ma of the tip inclined with respect to the conveying direction, the deposit detection sensor 5a operates. Although the "with paper money" is detected, at least one of the attitude detection sensors 5b is in the state of detecting "without paper money", and it is possible to detect that the paper money M has been inserted in an oblique attitude.

The discrimination sensor 5c is for detecting whether or not the inserted banknote M is authentic, and is uniquely arranged at a position downstream of the attitude detection sensor 5b in the introduction passage portion 3a. Although not shown in the drawing, the position of the discrimination sensor 5c in the width direction of the transport path 3 is on the center plane that bisects the introduction passage portion 3a into the left and right, like the deposit detection sensor 5a. The distance between the posture detection sensor 5b and the discrimination sensor 5c along the conveyance direction is set to be larger than the shortest side Mb of the bill M.

As the deposit detection sensor 5a, the attitude detection sensor 5b, and the discrimination sensor 5c, those generally used in the past may be applied. In the present embodiment, the one that optically distinguishes the bill M and the bill M is applied.

The distribution passage portion 3b extends substantially horizontally rearward from the downstream end of the introduction passage portion 3a. A branch passage portion 3c branched from the distribution passage portion 3b is connected between the distribution passage portion 3b and each of the bill storage boxes 2A, 2B, 2C. Although not shown in the drawing, a gate member 6 for switching the conveyance destination is provided at a branch portion between the distribution passage portion 3b and the branch passage portion 3c.

Reference numeral 3d in FIG. 1 denotes a dispensing passage portion that branches from the distribution passage portion 3b toward the front of the device housing 1. This withdrawal passage portion 3d is for carrying the banknotes stored in the banknote storage boxes 2A, 2B, 2C to the withdrawal box 7. The withdrawal passage portion 3d is also used when returning a bill, which is determined to be not proper by the discrimination sensor 5c, to the outside of the device housing 1, as described later. Further, reference numeral 8 in FIG. 1 is a bill detection sensor arranged in a plurality of locations of the distribution passage portion 3b and the dispensing passage portion 3d. These banknote detection sensors (third paper sheet detection sensors) 8 detect the presence or absence of banknotes M in the distribution passage portion 3b and the dispensing passage portion 3d. These bill detection sensors 8 are arranged at positions where the mutual intervals along the transport direction are sufficiently larger than the short side Mb of the smallest bill M.

FIG. 3 shows a control system of the bill processing unit described above. The control unit 10 shown in FIG. 3 controls the transport roller 4, the gate member 6, and the display unit 11 according to the detection results of the deposit detection sensor 5a, the attitude detection sensor 5b, the discrimination sensor 5c, and the bill detection sensor 8. .. The display unit 11 performs display according to the display data given from the control unit 10, and is provided on the front surface of the device housing 1, for example. The above-described control unit 10 may be realized by, for example, causing a processing device such as a CPU (Central Processing Unit) to execute a program, that is, by software, or by hardware such as an IC (Integrated Circuit). It is also possible to realize it by using software and hardware together.

In the banknote processing unit configured as described above, the banknote M is inserted into the upstream end (insertion position) of the transport path 3 via the insertion port 1a, and the deposit detection sensor 5a and the attitude detection sensor 5b are each “with banknote”. When the paper money M is detected, the conveyance roller 4 is driven to take the paper money M into the device housing 1, and the paper money M is discriminated through the discrimination sensor 5c. In addition, when the deposit detection sensor 5a detects "there is a bill" while at least one of the posture detection sensors 5b detects "there is no bill" after the bill M is inserted, the control unit 10 causes the bill M to have a correct posture. It is determined that the bill has not been inserted, and an error message is displayed on the display unit 11, for example, and the user is prompted to re-insert the bill M.

As a result of the discrimination by the discrimination sensor 5c, when it is determined that the bill is a regular bill M, the control unit 10 appropriately drives the transport roller 4 and the gate member 6 to bill the discriminated bill M with a bill storage 2A corresponding to the denomination. Store in 2B and 2C. On the other hand, as a result of the discrimination, when it is determined that the bill M is not authentic, the control unit 10 appropriately drives the conveying roller 4 and the gate member 6 to deposit the bill M in the deposit box 7 through the dispensing passage unit 3d. Transport. Further, the control unit 10 displays an error message indicating that the banknote M is not authentic through the display unit 11. During the bill processing described above, the control unit 10 performs processing for storing the detection results of the deposit detection sensor 5a and the attitude detection sensor 5b as log data in the memory 12.

Here, from the time when the detection result of the attitude detection sensor 5b is switched from “with paper money” to “without paper money” with the conveyance of the paper money M, the discrimination sensor 5c continues to operate until a predetermined time elapses. When "no banknotes" is detected, the control unit 10 refers to the log data stored in the memory 12, and detects when the detection result of the attitude detection sensor 5b is switched from "with banknotes" to "without banknotes". Based on the detection result of the deposit detection sensor 5a, it is determined whether or not a conveyance error such as a paper jam has occurred.

That is, when the bill M is taken into the device housing 1, as shown in FIG. 4, the posture is detected at the time point t1 when the detection result of the posture detection sensor 5b is switched from "with bill" to "without bill". The detection result of the deposit detection sensor 5a arranged upstream of the detection sensor 5b is “no banknote”. Therefore, when the detection result of the deposit detection sensor 5a is “no banknote” and the discrimination sensor 5c continues to detect “no banknote” until a predetermined time elapses, the attitude detection sensor It can be determined that the banknotes M are accumulated between the 5b and the discrimination sensor 5c. As a result, the control unit 10 displays an error message indicating that the banknotes M are retained between the attitude detection sensor 5b and the discrimination sensor 5c through the display unit 11, and stops the processing of the banknote processing unit. As a result, for example, a conveyance manager such as a store in which an automatic change dispenser is installed can quickly eliminate a conveyance error such as a paper jam, and the bill processing unit can be used again.

On the other hand, as shown in FIG. 5, at time t1 when the detection result of the attitude detection sensor 5b is switched from "with paper money" to "without paper money", detection of the deposit detection sensor 5a arranged upstream of the attitude detection sensor 5b. The result is "with paper money", for example, when the paper money M goes backward with respect to the transport direction, such as the paper money M being taken out from the insertion slot 1a by the user. Therefore, when the detection result of the deposit detection sensor 5a is “with paper money” and the discrimination sensor 5c continuously detects “without paper money” until a predetermined time elapses, the attitude detection sensor It is possible to determine that there is no conveyance error because the banknotes M do not stay between the 5b and the discrimination sensor 5c. That is, in the case of the above detection result, it is not necessary for the bill processing unit to eliminate the conveyance error. As a result, the control unit 10 continuously enables the bill processing unit and performs the above-described process when the next bill M is inserted.

Note that the above-described processing for determining a transport error may be performed not only for the discrimination sensor 5c but also for the banknote detection sensor 8 arranged in the distribution passage portion 3b. That is, from the time when the detection result of the attitude detection sensor 5b is switched from “with paper money” to “without paper money”, the paper money detection sensor 8 through which the paper money M should originally pass continues until a predetermined time elapses. When “no banknote” is detected, the log data stored in the memory 12 is referred to, and the deposit is made at the time when the detection result of the attitude detection sensor 5b is switched from “with banknote” to “without banknote” as before. Based on the detection result of the detection sensor 5a, it can be determined whether or not a conveyance error such as a paper jam has occurred. Further, if the detection result of the bill detection sensor 8 is stored as the log data, it is possible to identify the portion where the conveyance error occurs.

As described above, according to the banknote processing unit described above, a space larger than the minimum short side Mb of the banknote M is secured between the attitude detection sensor 5b and the discrimination sensor 5c, but the banknote detection sensor is provided between them. Whether or not there is a transport error can be accurately determined without disposing No. 8, and an error display is provided only when a transport error occurs so as to prompt the elimination thereof. This makes it possible to reduce the manufacturing cost of the bill processing unit and is advantageous in terms of maintenance.

In addition, in the above-mentioned embodiment, although the banknote conveying apparatus applied to the banknote processing unit of the automatic change machine is illustrated, the present invention can also be applied to those that transfer other paper sheets. .. In this case, as the paper sheet detection sensor, a first paper sheet detection sensor that detects the paper sheet arranged at the insertion position on the upstream side and a second paper sheet detection sensor that detects the paper sheet arranged at the insertion position on the downstream side. It is sufficient if the paper sheet detection sensor is provided. Further, although the transport mechanism is exemplified by the transport roller 4, the transport mechanism is not limited to the transport roller 4. Furthermore, the detection result of the first paper sheet detection sensor is referred to after a predetermined time has elapsed from the time when the second paper sheet detection sensor detected "no paper sheet". The detection result of the first sheet detection sensor may be referred to immediately when the sheet detection sensor detects “no sheet”. In this case, it is possible to determine whether or not there is a transport error when the third sheet detection sensor subsequently detects "no sheet" for a predetermined time.

DESCRIPTION OF SYMBOLS 1 Instrument housing 1a Input port 2A, 2B, 2C Banknote storage 3 Conveyance path 3a Introduction passage part 3b Distribution passage part 3c Branch passage part 3d Withdrawal passage part 4 Conveyance roller 5a Deposit detection sensor 5b Attitude detection sensor 5c Identification sensor 6 Gate Member 7 Outgoing Bank 8 Banknote Detection Sensor 10 Control Section 11 Display Section 12 Memory M Banknote

Claims (3)

A paper sheet transporting device that drives a transport mechanism to transport a paper sheet when the paper sheet is placed at a predetermined input position,
A first sheet detection sensor for detecting the sheet arranged at the loading position on the upstream side;
A second sheet detection sensor for detecting the sheet arranged at the input position on the downstream side;
And detecting the first paper sheet detection result by referring to the detection result of the first paper sheet detection sensor at the time when the detection result of the second paper sheet detection sensor changes from the presence of paper sheets to the absence of paper sheets. A paper sheet transporting device, which determines that there is no transport error when the detection result of the sensor is a paper sheet. Further comprising a third paper sheet detection sensor arranged at a site downstream of the second paper sheet detection sensor,
The third sheet detection sensor continuously detects the absence of a sheet from the time when the detection result of the second sheet detection sensor indicates that there is a sheet to the absence of the sheet until a predetermined time elapses. In this case, the detection result of the first paper sheet detection sensor at the time when the detection result of the second paper sheet detection sensor is changed from the presence of paper sheet to the absence of paper sheet is referred to. The paper sheet transporting device according to. The paper sheet conveying apparatus according to claim 2, wherein when the reference result of the first paper sheet detection sensor indicates that there is no paper sheet, it is determined as a conveyance error.

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