JPH06211418A - Sorting device for paper sheet - Google Patents

Abstract

PURPOSE:To optimize the sorting of paper sheets by obtaining conveying speed and separating speed according to the information on paper-to-paper intervals on a conveying route. CONSTITUTION:A sorting device for the paper sheets consists of a separating mechanism consisting of a feed roller 15 drawing out the paper one by one, a conveying route 13 for conveying the paper sheets, a discriminating part for detecting the paper sheet condition, a paper-sheet position sensor, a paper sheet interval sensor, a gate for determining the paper-sheet conveying direction, a recovery box for accumulating the sorted paper sheets, a conveying motor 10, which varies its conveying speed in accordance with the information obtained from the position sensor and from the interval sensor, and a feed roller motor 11, which varies the paper separating speed in correspondence to the conveying speed. Accordingly, even if the paper-to-paper intervals are short, paper sheets each can be sorted individually. In addition, the treating capacity of the sorting device can be enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet handling apparatus such as an automatic teller machine used for financial relations, and particularly to a paper sheet which is effective when a paper sheet interval on a conveyance path is different in a transaction. The present invention relates to a leaf sorting device.

[0002]

2. Description of the Related Art A conventional device is disclosed in Japanese Patent Laid-Open No. 55-14658.
As described in 5, the paper sheets are sorted one by one by feeding the paper sheets one by one into the transport path and discriminating the sheets one by one. However, when the paper sheet interval on the transport path is extremely short, no consideration has been given to dividing each paper sheet one by one.

[0003]

In the above-mentioned prior art, therefore, the sheet conveying speed is constant and the separating speed is constant. (1) When the sheet interval on the conveying path is short, the sheet is separated. Since the gate switching operation cannot follow, it is not possible to separate each sheet individually.

(2) In order to guarantee the gate operation time by sufficiently widening the sheet interval, it is necessary to set the sheet transport speed and the sheet separation speed to low speeds beforehand, and a large number of sheets are sorted. In this case, there was a problem that the processing time was extremely long.

The objects of the present invention are: (1) When the sheet interval is short, by providing a control means for the conveying speed and the separation speed, even if the sheet interval is short, each sheet is individually classified. To do.

(2) To increase the separating speed and the conveying speed to improve the throughput of the sorting apparatus.

[0007]

In order to achieve the above object, a paper sheet interval detecting means is provided so that the paper sheet interval on the conveying path can be detected. Further, a conveyance path speed control means is provided to make the conveyance speed optimal according to the sheet interval. Further, a separation speed control means is provided so that the separation speed is optimal according to the sheet interval.

[0008]

The paper sheet separating means takes out the paper sheets one by one.
The transport path transports the taken out paper sheets one by one. The discrimination unit detects the state of paper sheets on the conveyance path. The position detection means detects the paper sheet position on the conveyance path. The gate mechanism divides the paper sheet conveyance direction based on the detection information of the determination unit and the paper sheet position information. The stacking mechanism stacks the paper sheets on the divided transport paths. The interval detecting means detects the paper interval on the transport path. The transport path speed control means controls the speed of the transport path based on the sheet interval information. The separation speed control means controls the separation speed according to the sheet interval.

[0009]

Embodiments of the present invention will be described below with reference to FIGS.

FIG. 1 is a hardware block diagram of a paper sheet dispensing apparatus. The position sensor 1 and the interval sensor 2 that detect the position of the paper sheet on the transport path outputs light information to the control unit 5 when the paper sheet is passing over the sensor, and dark information when passing the sensor. The encoder 3 is connected to the drive unit of the transport path and outputs a pulse signal to the control unit 5 according to the amount of movement of the transport path. The discrimination mechanism 4 outputs the sheet state on the conveyance path to the control unit 5. The control unit 5 uses the position sensor 1
The position of the paper sheet is calculated by adding up the number of encoder pulses from the time when the light / dark signal changes. Further, the interval between the paper sheets is calculated by integrating the encoder pulses during the writing of the light / dark signal of the interval sensor 2. Further, the state of the paper sheet is detected by the discrimination information from the discrimination mechanism 4. Then, the deceleration amount of the carry motor 10 and the deceleration timing are calculated according to the calculated paper sheet spacing and paper sheet position information, and the carry motor 1 is sent to the driver 9.
The speed signal 6 of 0 is output. Similarly, the deceleration amount and deceleration timing of the feed roller drive motor 11 are calculated according to the paper sheet interval and the paper sheet position, and the speed signal 7 of the feed roller drive motor 11 is output to the driver 9. The control unit 5 also determines the stacking destination of the paper sheet based on the discrimination information. Then, by calculating the gate switching timing based on the sheet position information and the sheet interval, the driver 9
A gate ON / OFF signal is output to. The driver 9 is an amplifier circuit for a signal from the control unit 5. Control unit 5
By amplifying the speed signals 6 and 7 from, the voltage / current that can be driven by each actuator of the conveyance motor 10, the feed roller motor 11, and the gate solenoid 12 is converted.

FIG. 2 shows the structure of the paper sheet separating mechanism. The separating mechanism includes a feed motor 10 for driving the feed path 13, a feed roller 15 that rotates in conjunction with a feed roller drive motor 11, and a feed roller 1.
5, a pick-up roller 17 that intermittently feeds the paper sheet 18 between the feed roller 15 and the gate roller 16 in synchronization with the gate roller 16 and the feed roller 15 that are provided for separating the paper sheets from each other. The upper end of the paper sheet is detected by a sensor that is not provided, and the pressing plate 27 is controlled so that the upper end position of the paper sheet is constant, and the conveyance path 13 for conveying the separated paper sheets. . Next, the operation of the separating mechanism will be described. Stacked paper sheets 18
The upper end position of the sheet is kept constant by the push plate 27.
Next, the feed roller drive motor 11 takes out the sheets one by one by the pickup roller 17, the sheets are pushed between the feed roller 15 and the gate roller, and the sheets are separated one by one according to the rotation speed of the feed roller 11. Is
It is sent to the transport path 13.

FIG. 3 shows a mechanical diagram of the paper sheet dispensing machine. This withdrawal mechanism is a cassette 19-2 for separating paper sheets.
1. A transport path 13 for transporting paper sheets separated from a cassette, a discriminating section 4 for detecting the state of the transported paper sheets, a gate for separating destinations of the paper sheets, withdrawal It is composed of a dispensing port 23 for accumulating paper sheets and a reject box 22 for accumulating reject paper sheets. When the withdrawal user makes a withdrawal of 55,000 yen, it separates five 1,000-yen tickets from the cassette 19 in which the 1,000-yen ticket is set, and the discriminating unit 4 through the transport path 13. After passing through, the gate 26 collects the money into the dispensing port 23. After the 1,000 yen withdrawal operation, 5 from the cassette 20 with the 10,000 yen ticket set
The coin is dispensed, and the series of dispensing operation is completed. When the discriminating unit 4 detects an unfit note during the sheet conveyance, the reject box 2 is switched by switching the gate 26 only for the sheet concerned.
Collect to 2.

FIG. 4 shows a flow chart of the sorting mechanism. First,
The transport motor 10 for driving the transport path 13 is started. The operation will be described below according to each control. In the conveyance motor control, the conveyance motor 10 is decelerated when the sheet interval is less than the specified value, and when the interval is less than the specified value,
When the sheet reaches the front of the gate, the transport motor 1
0 is controlled to be driven at a low speed. Similarly, in the F-roller motor control, the feed roller motor 11 is operated when the paper sheet interval reaches the specified value and when the paper sheet reaches the front side of the gate.
To stop. The discrimination control is to detect the sheet state at that time when the sheet arrives at the discriminating unit 4 and output information whether the detected result is a genuine note, an unfit note, or an unknown note.
The gate control determines the switching direction of the gate 26 based on the information of the paper sheet obtained from the discrimination control, and when the paper sheet reaches the front side of the gate 26, the gate control is turned on / off.
Output an OFF signal. By the following, when the sorting operation of all the paper sheets is completed, the conveyance motor 10 is stopped, the feed roller 11 is stopped, the gate 26 is stopped, and a series of operations is ended.

FIG. 5 shows movements of the sheet conveying position and the conveying speed. Paper sheets are conveyed one by one from the top to the bottom in FIG. The following is an introduction.

(1) Interval detection sensor The distance between gates is 190 mm.

(2) The size of the conveyed paper sheet is 76 mm.

(3) Transport path speed Vhmax (standard time) 140
0 mm / s, (during deceleration) 28 mm / s.

(4) Gate switching time Tg 36 ms.

(5) Separation speed (standard time) 8 sheets / s, (deceleration) 0 sheets / s.

(6) Feed roller rotation speed (standard time)
800pps, 0pps (during deceleration).

First, the maximum sheet interval lmax, which requires deceleration control of the carry motor 10, is calculated.

[0022]

## EQU00001 ## lmax = Vhmax.times.Tg = 1400 mm / s.times.36 ms = 50.4 mm Therefore, when the carry motor 10 is rotating at the standard speed, the gate switching operation is performed for the paper sheets with a sheet interval of 50.4 mm or more. Is possible. Next, when the paper interval is 1 mm,
The operation speed of the carry motor 10 that can perform the gate switching operation is calculated.

[0023]

[Formula 2] Vhmin = 1 min / Tg = 1 mm / 36 ms ≈ 28 mm / s Therefore, when the sheet interval is shorter than 50.4 mm, the speed of the conveyance motor 10 is set at the time when the sheet comes in front of the gate. The gate switching operation is reliably performed by reducing the speed to 28 mm / s. Next, the speed of the feed roller motor 11 is calculated. The feed roller 11 has a standard time of 800
It rotates at pps and separates 8 sheets per sheet. When the conveyance motor 10 is decelerated to 28 mm / s, the feeding speed of the separated paper sheet of the feed roller motor 11 exceeds the conveyance path speed, and the paper sheet stays in the separating portion. Therefore, the feed roller motor 11 is stopped while the carry motor 10 is decelerating. The operation of FIG. 5 will be described below. Iw is calculated from the time when the trailing edge of the N-th sheet passes the gap detection sensor 2 to the time when the leading edge of the N + 1-th sheet reaches the gap detection sensor 2. lw is 50
If it is less than mm, the conveyance motor 10 is decelerated before the N + 1th sheet reaches the front side of the gate. Before the gate 1
The gate is switched when the N + 2nd sheet passes at 0 mm (lk). When the gate switching operation is completed, the conveying speed and the separation speed are returned to the standard speed, thereby ending the sorting operation for the Nth sheet and the N + 1th sheet.

FIG. 6 shows a gate switching timing and a conveyance speed setting table corresponding to the sheet interval lw. Figure 5 above
If the sheet interval lw, which is a sensor table for determining the transport speed and gate switching timing when the sheet interval lw is shorter than the standard value in the explanation, is 1 mm to 9 mm, the gate switching timing is set to lw. Correspondingly, when the sheet interval lw is 10 mm or more with a sheet width of 1 mm to 9 mm, the gate switching timing is 10 mm before the gate. The conveyance speed is controlled to 28 mm / s when the sheet interval is less than the standard value. This table makes it possible to accurately sort each sheet.

[0025]

EFFECTS OF THE INVENTION According to the present invention, (1) In the case where the distance between the paper sheets on the conveying path is short, by providing the control means for the conveying path speed and the separation speed, Also, each paper sheet can be individually divided.

(2) Since the sheets can be sorted one by one according to the above (1), the sheets can be effectively used.

(3) The processing speed of the sorting device can be improved by increasing the separation speed and the conveyance speed.

[Brief description of drawings]

FIG. 1 is a hardware block diagram of a paper sheet sorting apparatus.

FIG. 2 is a paper sheet separation mechanism diagram.

FIG. 3 is a mechanism diagram of a banknote dispensing machine using a paper sheet sorting mechanism.

FIG. 4 is a flow chart of a sorting mechanism.

FIG. 5 is a diagram showing movements of a sheet conveyance position and a conveyance speed.

FIG. 6 is a diagram showing a gate switching timing and a conveyance speed setting table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Position sensor, 2 ... Interval sensor, 4 ... Identification part, 9 ... Driver, 10 ... Pulse motor, 12 ... Gate solenoid, 13 ... Conveyance path, 15 ... Feed roller, 17 ... Pickup roller, 26 ... Gate, 27 ... Push plate.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location G07D 9/00 416 C 8111-3E

Claims (1)

[Claims] 1. A paper sheet separating means for taking out the paper sheets one by one, a conveying path for conveying the taken out paper sheets one by one, and a paper sheet state on the conveying path. And a gate mechanism for separating the paper sheet conveyance direction based on the detection information of the discrimination section and the paper sheet position information In a paper sheet sorting apparatus including a stacking mechanism for stacking paper sheets on the conveyed transport path, a paper sheet interval detection means, a transport path speed control means and a separation speed control means are provided, A paper sheet sorting apparatus, which sorts paper sheets on a transport path by performing optimum transport speed and separation speed control according to an interval.