JPS6296246A - Paper sheet conveying device - Google Patents

Abstract

PURPOSE:To convey paper sheets in a conveying direction in horizontality, by installing a device which performs the positional compensation of these paper sheets on the basis of the count value of a timer. CONSTITUTION:If a flag is set, a sensor 3 is turned on in advance, namely, the right side of a bill is conveyed in advance, so that there is necessary to drive a right side of the bill, setting right and left to the same position. Therefore, a motor M2 is reversely rotated, driving the belt 1 in the reverse direction against the conveying direction. And, when the flag is left reset intact, since it is in the case where a sensor 4 is turned on in advance, namely, the left side of the bill is conveyed in advance, the motor M2 is rotated clockwise, the right belt 1 is driven in the conveying direction, making the right side of the bill go forward. Simultaneously with a rotation start of the motor M2, a timer is started. Conveyance keeps on till the count value of the timer becomes equal to the prestored count value, and when it is equalized, the motor M2 is stopped while the time is stopped as well and cleared.

Description

Detailed Description of the Invention (AlTechnical Field) This invention relates to a paper sheet conveying device for conveying paper sheets such as banknotes with a belt, and more particularly to a paper sheet conveying device for correcting the inclination of paper sheets during conveyance. .

(b1 Outline of the Invention The paper sheet conveying device according to the present invention is provided with a pair of paper sheet conveyors 1 perpendicular to the conveying direction on the left and right sides of a general conveyance path, and also handles the conveyed sheets. A timer is provided to measure the time difference between the detection times of the left and right paper sheet sensors. Since this time difference is due to the inclination of the paper sheet, further means is provided for correcting the position of the paper sheet based on the count value of the timer. This makes it possible to transport paper sheets horizontally in the transport direction.

(C) Prior art and its drawbacks In an automatic transaction processing device etc. that can handle banknotes, the conveyance path of the banknote conveyance device that conveys banknotes is a belt,
It is formed by rollers, etc. The conveyance path using a belt is
Generally, it is composed of a pair of left and right heddles, and both the left and right are configured to sandwich and convey banknotes from above and below. The left and right belts are driven by the same drive shaft and are designed to transport banknotes at the same speed, but due to errors in the mechanical system, variations in each part, etc., there may be slight differences in the transport distance during transport. This could cause the banknotes to become tilted.

If the banknotes are tilted too much, the accuracy of the banknote recognition machine's ability to distinguish between authenticity and denomination will decrease, and it will also cause jams.

This has caused problems such as banknotes being torn, and has also caused a decrease in the reliability and operational efficiency of automatic transaction processing devices equipped with a banknote conveyance device.

(d) Purpose of the Invention In view of the above-mentioned drawbacks, it is an object of the present invention to provide a paper sheet conveying device that can correct the inclination that occurs during conveyance of paper sheets such as banknotes.

+e+ Structure and Effects of the Invention The present invention provides a sheet conveyance device having a conveyance path composed of a pair of left and right belts, in which a pair of left and right sheet sensors are installed perpendicularly to the conveyance direction on the conveyance path, and the A timer is provided that starts when one of the paper sheet sensors detects the conveyed paper sheet and stops when the other detects this paper sheet, and 1. the other sheet sensor side by the distance conveyed during the count time of the timer,
It is characterized by having a position correction means for correcting the position in the direction of advancing relative to one paper sheet sensor.

By configuring as described above, according to the present invention, the inclination of the paper sheet can be determined based on the difference in the timing at which the left and right pair of paper sheet sensors detect the paper sheet being conveyed. This tilt is corrected by a position correction means,
It is possible to make the edge of the paper sheet perpendicular to the conveyance direction.

If this device is used in a banknote conveyance device of an automatic transaction processing device, banknotes can be conveyed in a normal posture at all times, improving the accuracy of banknote discrimination. 2. Preventing banknote jams and banknote damage due to tilted banknotes. Embodiment FIG. 1 is a partial structural diagram of a banknote conveying device according to an embodiment of the present invention. FIG. 3 is a partial plan view of the drive mechanism.

The same figure (in Bl, the banknote conveyance path is lower right belt 1, lower right belt 1', lower left belt 2, upper left heald 2
′. The lower right belt 1 and the lower left belt 2 are each stretched around a drive pulley 11, 12. The left and right upper belts 1' and 2' are installed so as to come into contact with the upper surface of the left and right lower belts 1.2, and these left and right upper belts I-1' and 2' are attached to the left and right lower belts 1 and 2, respectively. Follow. The bill conveyance path is formed between the left and right upper and lower belts. Hereinafter, the "lower right belt 1" and the lower left belt 2-1 will be referred to as "I-right belt 1" and "lower heald 2," respectively.

In the figure, the drive pulleys 11.12 that directly drive the left and right bells I-1 and 2 are each supported by a drive shaft 10.9, and the drive shafts 9 and 10 are coaxially connected by a clutch 7 (CLI). . A motor 5 (Ml), which is a motor for transporting banknotes, is connected to the end of the drive shaft 9 opposite to the clutch 7 via a pulley and a belt. When conveying banknotes, the clutch 7 is connected, the motor 5 is rotated, and the bells l-1 and 2 are driven in the direction of the arrow. The motor 5 is set to rotate only in this direction.
Further, a clutch 8 (CL2) is connected to the end of the drive shaft 10 on the opposite side to the clutch 7, and a drive shaft 13 for position correction is connected to the opposite side of the clutch 8.

A pulley 14 supported by the drive shaft 13 is connected to the belt 1
5. It is connected via a pulley 16 to a motor 6 (M2) which is a motor for position correction. The clutch 8 is opened when the banknotes are transported. When correcting the inclination of banknotes during conveyance, the clutch 7 is opened, the clutch 8 is connected, and the motor 6 is rotated forward or reverse to drive the right side belt 1 in the direction of the arrow or in the direction of the opposite arrow in the figure. The driving speed of the right belt 1 by the motor 6 is the same as the driving speed by the motor 5, while the driving speed of the right belt 1 on the conveyance path is the same as that of the motor 5.
A banknote sensor 3 (Sl), which is a photosensor, is installed on the right side of the left heald 2, and a similar banknote sensor 4 is installed on the left side of the left heald 2.
(S2) is installed and turns on when a banknote passes this position. These banknote sensors 3 and 4 are installed on the same straight line perpendicular to the conveyance direction (arrow in the figure).

FIG. 2 is a block diagram of a control section of the banknote conveyance device. The microcomputer 20, which is a control device, includes a sensor 3. Sensor 4. A motor drive IJJ system W 21 and a clutch drive device 22 are connected. Motor drive device 2
The motor 5 and the motor 6 are connected to the motor 1, and the clutch 7.8 is connected to the clutch drive device 22. The memory of the microcomputer 20 is set with a flag for storing that the sensor 3 is turned on before the sensor 4, a timer for measuring the amount of inclination of the banknote, and an area for storing the count value of this timer. . Also, does the microcomputer 20 control the entire banknote processing? 1[
It is connected to the central control unit 1 and receives commands such as starting and ending bill conveyance from the central control unit.

FIG. 3 is a flowchart showing the operation of the control section of the banknote conveying device, and FIG. 4 is a diagram showing the procedure for correcting the inclination of the banknote being carried. Flowchart 1 in FIG. 3 will be explained with reference to FIG. Hereinafter, the banknote sensor, motor, and clutch will be described using symbols.

Upon receiving a bill conveyance command from the central control device, step nl (hereinafter step ni is simply referred to as ni).
to reset the flag, turn on the clutch CLI, and turn off the clutch CL2.
starts driving (n3). After the drive starts, the banknote is sent to the banknote sensor (hereinafter simply referred to as "sensor") SL, S2.
It waits at ni, n5 until sensor Sl or sensor S2 is turned on.

When sensor S1 is turned on first (Fig. 4 (Al), ni
Based on the judgment, proceed to 06 and start the timer,
A flag is set to remember that sensor S1 was turned on first (n7). n8 until next sensor S2 turns on
If sensor S2 is turned on (Fig. 4+8)),
The timer is stepped t-7 (n9) and the motor M1 is stopped (n13).

On the other hand, if sensor S2 turns on first, proceed to nlo based on the judgment of n5, start the timer, and then sensor S1.
Waits at nil until it turns on. If the sensor S1 is turned on, the timer is stopped (n12) and the motor M1 is stopped (n13). After the steering control knob and motor M1 are stopped, the count value t0 of the timer at this time is stored in the memory, and the timer is cleared (n14).

The following is the banknote position correction operation. Clutch C on n15
Turn off L1, turn on clutch CL2, and refer to the flag at n16. If the flag is set, sensor S
1 turned on first, that is, the right side of the banknote is being conveyed first, so the right side bell [-1 is driven in the opposite direction to the conveying direction to retreat the right side of the banknote and bring the left and right sides to the same position. There is a need to. Therefore, the motor M2 is reversed (n
17), the heald 1 is driven in the opposite direction to the transport direction (FIG. 4(C)). If the flag remains reset, the sensor S2 is turned on first, that is, the left side of the banknote is being conveyed first, so the motor M2 is rotated forward and the right side heald 1 is turned on. The right side of the banknote is moved forward by driving in the transport direction (n18). In addition, motor M2
drives the right heald 1 at the same speed as when the motor M1 is conveying banknotes both in the normal rotation and in the reverse rotation.

A timer is started simultaneously with the start of rotation of motor M2 (n19). The timer count value is the previously memorized count value. Conveyance continues until the value becomes equal to (n20), and when the value becomes equal, the motor M2 is stopped and the timer is stopped and cleared (n21). With this, the leading edge of the banknote can be corrected to be on the same plane as the left and right sides.

Turn on clutch CLI with n22 and turn on clutch C.
L2 is turned off, and the motor M2 (6
), clutch CLI, CL2 (7, 8), drive shaft 13,
Pulley 14, 16. The belt 15 and n15 to n22 correspond to the position correction means of the present invention.

If this banknote conveyance device is used in this manner, the tip of the banknote being conveyed will be at the sensor S1. Since one of the banknotes is moved forward or backward by the time difference between S2 and the inclination of the banknote is corrected, the banknote can be conveyed in the correct posture. If the banknote processing device is configured so that the banknote passes through the banknote validator after this correction, it is possible to reduce symbol reading errors caused by banknote inclination and improve recognition accuracy. Furthermore, it is possible to prevent jams and damage to banknotes that would otherwise occur when the banknotes become too tilted.

In addition, by using a timer to measure the inclination and correcting the inclination based on this timer, even if the inclination is measured at the positions of the banknote sensors Sl and S2, the correction is not performed at the positions of the banknote sensors Sl and S2. It is not necessary to do it in the position of
This can be carried out at any position, allowing flexibility in controlling the conveyance of banknotes.

[Brief explanation of drawings]

FIG. 1 is a partial structural diagram of a banknote conveying device according to an embodiment of the present invention. FIG. 2 is a block diagram of the control section of the banknote conveyance device, FIG. 3 is a flowchart showing the operation of the control section of the banknote conveyance device, and FIG. 4 (Al, (B), (C) 1 is a diagram showing a procedure for correcting the inclination of a banknote being conveyed. 1, 2. 1', 2'-belt, 3.4-banknote (paper sheet) sensor, 5.6-motor, 7.8- Kula 7chi, 11.12- Puri.

Claims (1)

[Claims] (1) In a paper sheet conveyance device having a conveyance path composed of a pair of left and right belts, a pair of left and right paper sheet sensors are installed on the conveyance path perpendicular to the conveyance direction, and one of the paper sheet sensors A timer is provided that starts when one side detects a conveyed paper sheet and stops when the other side detects this paper sheet, and a timer is provided on the other paper sheet sensor side of the conveyed paper sheet. , the distance traveled during the timer count time,
A paper sheet conveyance device comprising a position correction means for correcting the position in a direction of advancing relative to one paper sheet sensor.