JPS5842911B2 - Banknote discrimination device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a banknote discrimination device that determines the authenticity of fed banknotes and classifies them into genuine banknotes and defective banknotes.

There is a known device that stacks a large number of banknotes and feeds them into a device one after another to continuously determine the authenticity of the banknotes.

Magnetic heads and photoelectric elements are generally used to determine authenticity, but even if the banknote is genuine, it may be misjudged if it is misaligned due to the way it is fed or if the magnetic field is insufficiently sensitive. There is a risk that the banknotes will be judged as defective banknotes.

Therefore, it is necessary to send the rejected banknotes to the discriminator again for rechecking, which is cumbersome and inefficient.

This invention was made based on the above-mentioned circumstances, and when a banknote is determined to be defective, the banknote is not immediately rejected but is returned to the banknote inlet side of the recognition device and automatically rechecked. It is an object of the present invention to provide an improved banknote discriminating device.

Hereinafter, the present invention will be specifically explained with reference to illustrated embodiments.

In the figure, reference numeral 1 is a rotating feed drum with grooves 2, 2 formed on the left and right sides, and a plurality of belt conveyors 3, 4, 5 are arranged around the feed drum 1. A banknote transport path is formed between the paper money 3, 4, 5 and the feed drum 1.

The first belt conveyor 3 includes four belt pulleys 3 a , 3 b , 3 c and 3 d, around which two endless bells 3 e and 3 e are wound. The surface of the corresponding endless bell 3e is in contact with the circumferential surface of the feed drum 10.

Further, the second belt conveyor 4 is the belt conveyor 3 mentioned above.
It is located slightly further away from the conveyor end of the belt, and there are two belt booms! J 4 a, 4 b with two endless bells) 4c
, 4c are wound so that the surface of the endless bell (4c) corresponding to the feed drum 1 is in contact with the circumferential surface of the feed drum 10.

Furthermore, the third belt conveyor 5 is also arranged slightly away from the conveyance end of the belt conveyor 4,
Two endless bells) 5c and 5c are wound around the two belt boots') 5a and 5b, and the surface of the endless bell) 5c corresponding to the feed drum 1 is in contact with the surface of the feed drum 10. be.

There is a banknote feeding port 6 at the conveyance start end of the first belt conveyor 3, and a plate extending along the circumferential surface of the feed drum 10 is provided between the banknote feed port 6 and the conveyance terminal end of the third belt conveyor 5. A plate-shaped switching gate guide 7 is disposed between the feeding port 6 and a bill feeding device 8, which will be described below, and a plate-shaped switching gate guide 9.

The banknote feeding device 8 rotates in the same direction (arrow direction) with a predetermined minute gap.

A pair of feed rolls 10 and 11 are provided.

The above-mentioned feed roll 10 is pivotally supported by a bell crank arm 12, and the other end of the bell crank arm 12 is pivotally connected to an operating rod 14 provided on a solenoid 13.

The bell crank arm 12 is pivoted to a machine frame (not shown) somewhere in the center thereof, and is oscillated by the force of a solenoid 13.

On the carry-in side of the feed roll 11, there is a banknote stacking stand 15, on which an auxiliary roll 16 is disposed.

A push-up type movable base 17 is arranged between the stacking base 15 and the feed roll 11, and this movable base 1
The tip of the roller 7 is pushed up above the feed port of the feed roll 11 by a cam 18 located below.

The cam 18 is pivotally connected to the operating rod 14 via a lever 19, and is also pivotally supported to the machine frame by a pin 20.

The operating rod 14 is pulled by a tension coil spring 21 until it hits a stopper (as shown).

A sensor 22 for detecting passage of banknotes is provided in the middle of the first belt conveyor 3, and a sensor 23 for banknote discrimination is arranged after this.

The sensor 22 is designed to send a signal to a control device 24, and the sensor 23 is designed to send a signal to a discrimination circuit.

In addition, when the sensor 23 is based on a magnetic head, in order to avoid wear and tear as much as possible, the magnetic head descends toward the circumferential surface of the drum 1 only when the counter 22 detects the passage of a banknote, and other than that, the magnetic head descends toward the peripheral surface of the drum 1. It is preferable to provide an elevating mechanism so that it is raised.

A switching gate 26 is disposed between the terminal end of the first belt conveyor 3 and the starting end of the second belt conveyor 4, and the switching gate 26 can introduce the tip into the grooves 2, 2 of the feeding drum 1.
It is pivoted to the machine frame at 7 and is connected to a solenoid 29 via a link rod 28.

This link rod 2B is connected to the solenoid 2 by a tension spring 30.
9 is being towed on the opposite side.

The switching gate 26 has an arcuate guide surface 26a along the pulley 3d, and serves to guide regular banknotes to a delivery roller 31 disposed corresponding to the pulley 3d.

A sensor 32 is disposed at the outlet of the feed roller 31, and a tray 33 for receiving banknotes is disposed.

Similarly, between the terminal end of the second belt conveyor 4 and the starting end of the third belt conveyor 5, the leading end is the feed drum 1.
The switching gate 34 is connected to the pin 3 so that the switching gate 34 enters and exits the grooves 2, 2.
It is pivotally supported on the machine frame at 5 and connected to a solenoid 37 via a link rod 36.

This link rod 36 is pulled in the opposite direction from the solenoid 37 by a tension spring blade.

The switching gate 34 has an arcuate guide surface 34a along the pulley 4b, and serves to guide defective banknotes to a delivery roller 39 disposed corresponding to the boolean IJ4b.

A sensor 40 is provided at the exit of the feed roller 39, and a tray 41 for receiving banknotes is provided.

Next, the effect will be explained.

Now, when the feed roll 11 rotates counterclockwise and feeds out the banknotes on the stacking table 15 starting from the lowest one and feeds them into the banknote feed port 6 (at this time, the roll 10 is rotating in the opposite direction and Even if the banknotes stacked on top of the banknotes try to enter between the rolls 10 and 11, this is prevented,
This prevents multiple sheets from being fed at once.

) When the bill entering the feed port 6 passes between the belt conveyor 3 and the feed drum 1, the sensor 22 first detects the passage of the bill, and then the sensor 23 issues a discrimination signal.

This signal is sent to the discrimination circuit 25, where the authenticity is determined by a known discrimination method.

That is, the authenticity is determined by comparing with a preset authenticity reference signal.

If the signals match, that is, if it is determined that the banknote is genuine, the control circuit 24 will issue an energizing signal to the solenoid 29.The banknote that has passed through the belt conveyor 3 will be guided through the switching gate 26 and rolled 31, tray 3
It will be carried out on 3rd.

At this time, the sensor 32 operates and a signal indicating the end of the determination is input to the control circuit 24.

On the other hand, in the banknote stacking table section, after one banknote is sent in, a sensor (not shown) detects this and energizes the solenoid 13, so the roll 10 rises and at the same time, the movable table 17 is moved by the action of the cam 18. The roll 11 is pushed up and the banknotes are prevented from being fed by the roll 11 until the next activation command is issued.

Then, when the solenoid 13 is deenergized again in response to a signal indicating the end of the determination, the roll 10 is lowered by the action of the spring 21, and the movable base 17 is lowered.

In this way, the next banknote feed is performed again.

If the banknote is determined to be defective by comparison with the reference signal, the control circuit 24 outputs an energizing signal to the solenoid 29, and the switching gate 26 enters the state shown by the imaginary line in FIG. Therefore, after leaving the belt conveyor 3, the banknotes are further sent to the belt conveyor 4, further to the belt conveyor 5, and then returned to the banknote feeding port again to be transferred to the conveyance path (between the feed drum 1 and the belt conveyors 3, 4, and 5). during).

Then, the sensor 22 further checks in, and the sensor 23 performs re-judgment.

If the sensor 22 receives check-in L, for example, twice per bill, then the belt conveyors 3 and 4
After passing through, the signal from the control circuit 24 is used to
Since the solenoid 37 is energized and the switching gate 34 is in the state shown by the imaginary line in FIG. 1, the bill is sent out to the roll 39 by the switching gate 34 and received by the tray 41 as a defective bill.

At this time, a signal is input to the sensor 40, and a signal indicating the end of the determination is sent to the control circuit 24.

In this way, banknotes that are determined to be defective are inspected twice.

In addition, in this embodiment, when a banknote is determined to be defective, the banknote is returned to the banknote feed port 6 and re-discrimination is performed, but this may be repeated more times.
In this case, for example, the check-in of the sensor 22 is
After feeding the banknotes once, it may be set so that the number of times is three or more times.

When each sensor 32.40 outputs a determination end signal, an energization signal or a deenergization signal to the solenoid 29.37 is output.

In the above description of the embodiments, the switching gates 26 and 34 have been described as lever-type ones, but these gates are not limited to the above-mentioned ones. It is also possible to use a car or the like to change the path of the banknotes (see Japanese Patent Publication No. 52-4200).
.

As described in detail above, in this invention, when the defective banknote is detected by the sensor, the switching gate of the defective banknote outlet is operated several times (once
Since the banknotes are moved to pass through the defective banknote ejection port and returned to the discrimination sensor side for re-discrimination, erroneous discrimination due to misalignment of the banknotes, uncertainty in the discrimination signal, etc. This is often resolved during the re-discrimination operation.

Therefore, the probability of discrimination is significantly increased, the need to re-discriminate defective banknotes by manual operation is reduced, the troublesome work is saved, and efficiency is improved.

In addition, on the condition that the switching gate operates and the banknotes are fed into the tray, the banknote feeding device feeds the banknotes one by one into the conveyance path. This has the advantage that it can be processed continuously.

In addition, when the set number of times of discrimination is three or more times, if it is confirmed that the banknote is genuine before reaching the set number of times, the banknote route switching gate will be switched to avoid unnecessary re-discrimination operation. Of course, it will be done.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing one embodiment of the present invention;
The figure is a longitudinal sectional front view of the feed drum. 1... Feed drum, 3, 4, 5... Belt conveyor, 6... Banknote feeding port, 8...
...Feeding device, 22, 23...Sensor, 24...Control circuit, 25...Discrimination circuit, 26...Switching gate, 33... ...Tray, 34...Switching gate, 41...
tray.

Claims (1)

[Claims] 1. A banknote feeding device that feeds out banknotes that have been loaded onto a banknote stacking table one by one and stops each time it is fed out, a conveyance path through which the banknotes fed from this banknote feeder are circulated, and this conveyance path. a sensor that determines the authenticity of each banknote each time it passes; a first switching gate that immediately sends banknotes determined to be genuine by the sensor from the transport path to the first tray; a second switching gate that sends banknotes that have circulated through the conveyance path a plurality of times without being determined as genuine bills from the conveyance path to a second tray; A bill discriminating device comprising: a control circuit that operates the bill feeding device on condition that the bill feeding device is fed.