JPH11116081A - Paper sheet delivery mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely separate and feed paper sheets one by one without generating jam. SOLUTION: In a paper sheet feeding mechanism for separating a number of paper sheets preliminarily set or discriminated and contained to be fed one by one in a circulation type note discrimination device for discriminating paper sheets such as notes, the paper sheet is once returned to an original position to repeat previous action in the case where the paper sheet is caught like a wedge in a delivery gap between a friction roller 11 and a stop roller 13 for separating each paper sheet from the others.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recirculation type bill validator for distinguishing bills such as bills and the like by separating a large number of bills set or identified and stored one by one. In particular, the present invention relates to a paper sheet feeding mechanism capable of eliminating paper jams and reliably separating and feeding paper sheets one by one.

[0002]

2. Description of the Related Art Generally, in a recirculation type bill validator for recognizing bills, a plurality of bills set or identified and stored in advance are separated and sent one by one. The payout mechanism is installed in various places. FIG. 6 is a schematic configuration diagram of a general paper sheet feeding mechanism. As shown in FIG. 6, the paper sheet feeding mechanism has a table 3 on which a paper sheet (banknote) 1 to be separated and sent out is placed, and above the table 3, A pusher 5 that moves up and down to press the bills 1 placed on the table 3 downward is provided. Then, below the table 3, a first sub-driver 7, a second sub-driver 9, and
And the friction rollers 11 are sequentially arranged as shown in the figure, and a stop roller 13 is arranged above the friction rollers 11 so as to face the friction rollers 11. The friction roller 11 is provided with a first sensor 15 for detecting its home position.
A pull roller 17 and a second
Sensors 19 are provided. The configuration of each of the above-described parts will be described in more detail. The first and second sub-drivers 7 and 9 are cylindrical rotating members which are made of an elastic member such as rubber and receive power from a motor or the like. It assists in feeding (pushing) the paper sheet 1 into a gap between the stop roller 13 and the friction roller 11 (hereinafter referred to as a feeding gap), and partially includes projections (irregularities) 7a and 9a. have. The protrusions 7a and 9a protrude from an opening (not shown) of the base 3 and come into contact with the lowest bill on the base 3. Sub-drivers 7 and 9 and friction roller 11
Is synchronized with the timing belt etc.
To rotate.

The friction roller 11 is a cylindrical rotary motion member which receives power from a stepping motor or the like, and has a projection (unevenness) portion 11a made of rubber or the like in a part thereof. Is rotated in the direction of the arrow C so that the lowest bill (the bill to be paid out) is fed out one by one by the projections 11a. Stop roller 13
Is a cylindrical rotary motion member that does not receive power, has fine protrusions (irregularities) on the outer peripheral surface, and rotates in the direction opposite to the traveling direction A of the paper sheet 1 (the arrow direction D). I can only do it. The friction roller 11
A slight gap (feeding gap) is provided between the paper sheet 1 and the stop roller 13, and the paper sheet 1 pushed by the sub-drivers 7 and 9 and the friction roller 11 is provided.
Is separated into one banknote to be fed and the other banknotes (the second banknote and thereafter). That is, the stop roller 13 and the friction roller 11 are slightly inserted as shown in FIG. 7, and the stop roller 13 can rotate only in the direction opposite to the traveling direction of the paper sheet 1. You can pay out one by one. Pusher 5 above
Is a plate-like member that moves up and down, and presses the (stacked) paper sheets 1 housed by its own weight or a spring against the sub-drivers 7 and 9 to generate a frictional force between the sub-drivers 7 and 9 and the paper sheets 1 ( It plays a role in controlling the frictional force that pushes out paper sheets. The second sensor 19 is for confirming that the fed sheet 1 is exactly one sheet, and the first sensor 15 is for checking the home position of the friction roller 11. belongs to. Here, the home position is a position where the position of the rubber on the friction roller 11 is not in the feeding gap (in the present case,
Rubber is below). The pull roller 17 is
This is for pulling out the fed paper sheet 1 (in a state where the leading end is protruded).

Next, a conventional feeding operation of the paper sheet feeding mechanism will be described with reference to FIG. First, in the initial state, as shown in FIG. 8A, the paper sheet 1 is set on the table 3 and pressed downward by the pusher 5, and the friction roller 11 and the sub-drivers 7, 9 You are in your home position. Next, as shown in FIG. 8B, in the above state, the sub-drivers 7 and 9 and the friction roller 11 rotate, the paper 1 is fed, and the friction roller 11 and the stop roller 13 are fed. Pushed into the gap. At this time, as shown in FIG. 9, the friction roller 11 and the sub-drivers 7 and 9 rotate synchronously. Then, as shown in FIG. 8C, only one sheet 1 is fed out by the physical phenomenon described below. That is, as shown in FIG.
If the frictional force is set so as to be higher than the frictional force for stopping the paper sheet 1> the frictional force between the paper sheets 1, only one paper sheet 1 is paid out. Next, FIG.
As shown in (e), the friction roller 11 and the rubber portions 11a, 7a, 9a of the sub-drivers 7, 9 are separated from the paper sheet 1, so that the conveyance ability of the paper sheet 1 is lost. The sheet 1 is completely pulled out from the feeding gap, and it is confirmed by the second sensor 19 that the number of sheets is one. At the same time, the friction roller 11 and the sub-drivers 7, 9 stop at the home position. Thereafter, the above operation is repeated.

[0005]

Here, in order to reliably separate and feed out one of the paper sheets at the friction roller 11 and the stop roller 13, the above-described method is used.
Two frictional forces (frictional force for stopping the papers acting between the stop roller 13 and the papers 1, and pushing out the papers 1 and the papers acting between the friction roller 11 and the sub-drivers 7 and 9) (The frictional force between the paper sheets 1) and the frictional force between the paper sheets 1), it is necessary to maintain an exquisite balance of "frictional force to push out> frictional force to stop> frictional force between bills". Therefore, when the balance of the above three frictional forces is lost, in the conventional feeding mechanism, the paper sheet 1 may be displaced as shown in FIG. In some cases, the wedge-shaped portion may enter the wedge-shaped gap. That is, as shown in FIG. 11A, the middle sheet 1 cannot be completely stopped by the stop rubber roller 13, and as a result, enters the wedge-shaped gap in the feeding gap.
If the payout operation is performed as it is, as shown in FIG. 11B, the fourth banknote from the bottom enters the payout gap and becomes a more severe wedge state (a state in which wedges grow). Was. In particular, among the above-mentioned frictional forces, the frictional force between the paper sheets 1 is inconsistent and very delicate, and artificially (mechanically) under the same conditions (the same bill, the same device, the same storage). Even if the number was set to be equal, it was hardly reproduced, and the reproducibility was very poor. That is, as described above, the paper sheet 1 is fed out in a wedge shape, and the friction roller 11 and the stop roller 13 are fed out.
Into the gap between the stop roller 1
1 cannot be separated. This gives 2
There are drawbacks such as the feeding of more than one sheet, the growth of a larger wedge, the feeding of the paper sheet 1 itself being impossible, and a stop due to a paper jam.

However, in the conventional feeding mechanism,
Since the rotation direction of the friction roller 11 and the sub-drivers 7 and 9 is only one direction (the direction in which the bill is fed out) as shown by the arrow C in FIG. 6, the rotation of the bill only in a certain direction (the arrow A in FIG. 6). It was configured not to feed out. Therefore, by further feeding out the wedge-shaped paper sheets that have entered the feeding gap as described above,
The paper further enters the feeding gap and exceeds the starting torque of the motor. As a result, the motor does not rotate, and the maintenance work (removal of the wedge-shaped paper) by the maintenance staff is performed. You will need it. More specifically, the following two types can be considered when the paper sheet cannot be fed out. 1. The paper sheet becomes wedge-shaped in the feeding gap, and cannot be fed because it exceeds the starting torque of the motor. 2. Depending on the condition of the paper sheets (paper sheets are broken, etc.)
There is no force to push into the feeding gap. However, at present, only the above-mentioned state 2 is considered, and as a countermeasure in a case where the paper sheet cannot be fed out, a force for pushing the pusher 5 further into the feeding gap is generated. Therefore, in practice, 1. Pusher 5 even if it cannot be extended due to
Is pushing. However, the paper sheets are unfolded in the gap,
At present, even if the pusher is further pushed in during the wedge shape, the frictional force between the paper sheets increases, making it difficult to separate the paper sheets. That is, 1. In this state, pushing the pusher 5 has the opposite effect. 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 feeding mechanism capable of eliminating paper jams and reliably separating and sending out paper sheets one by one.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a recirculating-type bill discriminating apparatus for discriminating bills such as bills and the like. A paper sheet feeding mechanism for separating paper sheets one by one and feeding the paper sheets, wherein the paper sheets are inserted into a feeding gap between a friction roller and a stop roller for separating the paper sheets one by one. When the sheet becomes wedge-shaped, the sheet is once returned to the original position and the feeding operation is performed again. Another feature of the present invention is that at least the friction roller rotates reversely to the rotation at the time of feeding in order to temporarily return the wedge-shaped paper sheets to the original position.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on illustrated embodiments. FIG. 1 is a configuration diagram showing an embodiment of a paper sheet feeding mechanism according to the present invention. This paper sheet feeding mechanism is used for a recirculation type banknote recognition device and the like. FIG.
As shown in FIG. 1, the paper sheet feeding mechanism has a table 3 on which a paper sheet (banknote) 1 to be separated and sent out is placed. There is provided a pusher 5 which moves up and down in order to press the bill 1 placed thereon on the lower side. Below the table 3, a first sub-driver 7, a second sub-driver 9, and a friction roller 11 are sequentially arranged from the upstream side in the feeding direction A of the bill 1 as described later. ,
Further, a stop roller 13 is disposed above and opposed to the friction roller 11. Further, the friction roller 11 includes the friction roller 11.
The first sensor 15 for detecting the stop of the rotation of the friction roller 11 during the home position and the feeding operation of the bill 1 is provided, and the transport path B of the bill 1 is provided.
Is provided with a pull roller 17 and a second sensor 19. The configuration of each part will be described in more detail. The first and second sub-drivers 7 and 9 are cylindrical rotating members which are made of an elastic member such as rubber and receive power from a motor or the like. It assists in feeding (pushing) the paper sheet 1 into a gap between the stop roller 13 and the friction roller 11 (hereinafter referred to as a feeding gap), and partially includes projections (irregularities) 7a and 9a. have. The protruding portions 7a and 9a protrude from an opening (not shown) of the base 3, and come into contact with the lowest bill on the base 3. The sub-drivers 7 and 9 and the friction roller 11 rotate in the arrow direction C and the arrow direction E synchronously by a timing belt or the like.

The friction roller 11 is a cylindrical rotary motion member which receives power from a stepping motor or the like, and has a protrusion (unevenness) portion 11a made of rubber or the like in a part thereof. The banknote is rotated in the arrow direction C so that the lowermost banknote (the banknote to be fed) is fed one by one by the protrusion 11a, and also rotated in the arrow direction E to return the wedge-shaped banknote to its original position. The stop roller 13 is a cylindrical rotary motion member that does not receive power, has fine protrusions (irregularities) on the outer peripheral surface, and is opposite to the traveling direction A of the paper sheet 1 (arrow direction D). You can only rotate to Further, a slight gap (feeding gap) is provided between the friction roller 11 and the stop roller 13, and the paper sheet 1 pushed in by the sub-drivers 7 and 9 and the friction roller 11 is replaced by one bill to be fed. And the other (the second and subsequent sheets). That is, the stop roller 13 and the friction roller 11 are
As shown in the figure, the stop roller 1
No. 3 can only rotate in the direction opposite to the traveling direction of the paper sheet 1, so that payout can be performed one by one.

The pusher 5 is a plate-like member that moves up and down, and presses the (stacked) paper sheets 1 stored by its own weight or a spring against the sub-drivers 7 and 9.
It plays a role of controlling the frictional force between the sheet 9 and the sheet 1 (the frictional force for pushing out the sheet). The second sensor 19 is for confirming that the fed sheet 1 is exactly one sheet, and the first sensor 15 checks the home position of the friction roller 11 and ,
This is for detecting the stop of the rotation of the friction roller 11 during the feeding operation. Here, the home position is a position where the position of the rubber on the friction roller 11 is not in the feeding gap (in the present case,
Rubber is below). The pull roller 17 is
This is for pulling out the fed paper sheet 1 (in a state where the leading end is protruded). The rear end of the table 3 has a wall 2 that plays a role of adjusting a bundle of paper sheets 1 that retreat as described later.
3 are provided.

Next, the feeding operation of the paper sheet feeding mechanism shown in FIG. 1 will be described with reference to the operation explanatory diagrams of FIGS. First, with reference to FIG. 2, a normal feeding operation will be described before the feeding stop release process in the case where the paper sheets are wedge-shaped in the feeding gap and the feeding is stopped, which is a feature of the present invention. . That is, in the normal feeding operation, first, in the initial state,
As shown in FIG. 2A, the paper sheet 1 is set on the table 3 and pushed in by the pusher 5, and the friction roller 11 and the sub-drivers 7, 9 are at the home position. Next, as shown in FIG.
Sub-drivers 7 and 9 and friction roller 11
Rotates, and the paper sheet 1 is fed out and pushed into the gap between the friction roller 11 and the stop roller 13. At this time, as shown in FIG. 9, the friction roller 11 and the sub-drivers 7 and 9 rotate synchronously.
Then, as shown in FIG. 2C, only one sheet 1 is fed out by the physical phenomenon described below. That is, as shown in FIG. 10, at this time, the frictional force for ejecting the paper sheet 1> the frictional force for stopping the paper sheet 1> the frictional force between the paper sheets 1 is set. In this case, only one sheet 1 is paid out.

Next, as shown in FIGS. 2D and 2E, the friction roller 11 and the rubber portions 11a, 7a and 9a of the sub-drivers 7 and 9 are separated from the bill, so that the bill carrying ability is lost. However, the paper sheet 1 is completely pulled out from the feeding gap by the pull roller 17, and it is confirmed by the second sensor 19 that the number of sheets is one. At the same time, the friction roller 11 and the sub-drivers 7, 9 stop at the home position. Thereafter, the above operation is repeated. Next, with reference to the operation explanatory diagram of FIG. 3, the feeding stop release operation which is a feature of the present invention will be described.
In FIG. 3, the first sub-driver 7 operates in the same manner as the second sub-driver 9 and will not be described. In the state shown in FIG. 2C, as shown in FIG. 3A, the paper sheet 1 becomes wedge-shaped in the feeding gap, exceeds the starting torque of the motor of the friction roller 11, and rotates the friction roller 11. Stops, the first sensor 15 detects the stop of the friction roller 11 during the feeding operation, and releases the pushing of the paper sheet 1 by the pusher 5 as shown in FIG. The roller 11 and the sub-drivers 7 and 9 are reversely rotated by a predetermined distance in a direction opposite to the rotation direction C (arrow E direction). Thereby, as shown in FIG. 3C, the bundle of the paper sheets 1 is retracted in the direction F opposite to the feeding direction A, and the rear end of the paper sheet 1 is placed on the rear wall 23. The paper sheet 1 that has returned to the original position where it comes into contact and has been shifted in a wedge-like manner.
And the wedge-shaped shift is eliminated.

Next, the feeding operation is performed again. That is, as shown in FIG. 3D, the sheet 1 is pushed in by the pusher 5 and the friction roller 11 and the sub-drivers 7 and 9 are rotated in the direction C.
As shown in (f), only one sheet 1 is paid out by the friction roller 11 and the sub-drivers 7 and 9 as described above. In other words, at this time, the frictional force that tries to release the sheet 1> the frictional force that tries to stop the sheet 1>
If it is set to be the frictional force between the paper sheets 1, the paper sheets 1
Is paid out only one. In addition, as a modified example, the wall 2
It is not necessary to eliminate the wedges 3 and prepare the wedge-shaped paper sheets 1.
In this case, if the wedge is released and the feeding operation is performed again, it is originally thought that the wedge is formed again. However, even under the same conditions artificially and mechanically, the wedge-like reproducibility is poor. Can be paid out normally.
Accordingly, it is possible to reduce the number of paper sheets to be fed out and the number of sheets to be chained, and to reduce the stoppage of the apparatus due to wedges. However, it is more reliable to provide and arrange the wall 23 as in the above embodiment.

Next, another embodiment will be described with reference to FIG. In this embodiment, when the leading end of the lowermost sheet 1a is in an L-shaped bent state when the sheet 1 is stored, or the like,
The L-shaped sheet 1a in the L-shaped bent state is eliminated so as to be fed out, and the basic configuration operation is the same as that of the above-described embodiment. That is, as shown in FIG. 4A, the friction roller 11 and the stop roller
When the lowermost paper sheet 1a in the L-shaped folded state is wrapped around the paper sheet 1 to form a wedge shape, and the rotation of the friction roller 11 (arrow C) stops, the rotation during the feeding operation is performed. The stop is detected by the first sensor 15 and the friction roller 11 and the sub-drivers 7 and 9 are rotated in the reverse direction (arrow E). At this time, as shown in FIG. 4B, the L-shaped bent of the paper sheet 1a is eliminated. afterwards,
As shown in FIGS. 4C and 4D, the sheet can be fed out one by one by performing the feeding operation again as described above. Other configuration operations are the same as those shown in FIG. 1 and FIG.

Still another embodiment will be described with reference to FIG. In this embodiment, when the paper sheet 1 is in a light wedge state and cannot be separated by the stop roller 13, a plurality of (in this case, two) paper sheets are fed out and the reject state is set. It is for eliminating. That is, as shown in FIG.
In the state in which the friction roller 11 rotates and feeds out (wedge state) while entering the wedge-like shape in the feeding gap, as shown in FIG. More than one sheet will be paid out. Here, even if the feeding is performed again, as shown in FIG.
Therefore, two sheets are fed out again. Therefore, in this embodiment, as shown in FIG. 5D, the reject state shown in FIG. 5B is detected, and the friction roller 11 and the sub-drivers 7 and 9 are rotated in the reverse direction (arrow E). ). As a result, the light wedge state is eliminated, and thereafter, as shown in FIG. 5E, the sheet is fed out one by one by performing the feeding operation again.

[0016]

As described above, according to the present invention, when the paper sheet becomes wedge-shaped in the feeding gap, the paper sheet is once returned to the original position and the feeding operation is performed again. In addition, paper jams can be eliminated and sheets can be reliably separated and sent out one by one.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating an embodiment of a paper sheet feeding mechanism according to the present invention.

2 (a) to 2 (e) are explanatory views of a normal feeding operation in the paper sheet feeding mechanism shown in FIG.

3 (a) to 3 (f) are explanatory views of a feeding stop release operation in the paper sheet feeding mechanism shown in FIG. 1;

FIGS. 4A to 4D are explanatory views of a feeding operation of another embodiment of the paper sheet feeding mechanism shown in FIG.

5 (a) to 5 (e) are explanatory views of a feeding operation of another embodiment of the paper sheet feeding mechanism shown in FIG.

FIG. 6 is a schematic configuration diagram of a general paper sheet feeding mechanism.

FIG. 7 is an enlarged view of a stop roller and a friction roller shown in FIG.

FIGS. 8A to 8E are explanatory views of a conventional feeding operation of the paper sheet feeding mechanism shown in FIG.

9 is an explanatory diagram of a rotation operation of the stop roller and the sub-driver shown in FIG.

FIG. 10 is an explanatory diagram of a feeding operation of the stop roller and the friction roller shown in FIG. 6;

FIGS. 11A and 11B are explanatory diagrams of a stop state of a paper jam in the stop roller and the friction roller shown in FIG. 6;

[Explanation of symbols]

1 ... paper sheets (banknotes) 3 ... units 5
... Pusher, 7, 9 ... Subdrive, 11 ... Friction roller,
13 ... stop roller, 15, 19 ... sensor,
17 ... pull roller, 23 ... wall,

Claims (2)

[Claims] 1. A paper sheet for separating and feeding out a large number of paper sheets set or identified and stored in advance in a recirculating-type paper money identification device for identifying paper sheets such as banknotes. A feeding mechanism for separating the paper sheets into sheets one by one when the paper sheets become wedge-shaped in a feeding gap between a friction roller and a stop roller for separating the paper sheets one by one. The paper sheet feeding mechanism is characterized in that the sheet feeding mechanism returns to the position shown in FIG. 2. The paper sheet according to claim 1, wherein at least the friction roller rotates in a direction opposite to the rotation at the time of feeding in order to return the wedge-shaped paper sheet to its original position. Feeding mechanism.