JPH04323135A - Paper sheet feeder - Google Patents

Abstract

PURPOSE:To prevent skew of feed paper sheets accurately regardless of deformation of the paper sheets or inclination in the case when the paper sheets are loaded. CONSTITUTION:In a paper sheet feed device to feed paper sheets A from clearance between feed rollers 6 and 7 and gate rollers 8 and 9, the device has a characteristic that the feed rollers 6 and 7 arranged separately right and left, motors 11 and 13 to drive the respective feed rollers 6 and 7 independently right and left, right/left paper sheet detecting sensors 16 and 17 arranged in the rear of feed positions of the respective feed rollers 6 and 7 and a control means to control relative positions in the axial direction between the paired feed rollers 6 and 7 and the paired gate rollers 8 and 9 independently right and left according to outputs of the respective paper sheet detecting sensors 16 and 17 are provided.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet dispensing device which is built into an automatic teller machine used in banking and the like and which sequentially dispenses banknotes one by one.

0002

2. Description of the Related Art Conventionally, as the above-mentioned sheet feeding device, there has been a device having the following configuration, for example.

That is, the banknotes are stored in the banknote storage section in an upright state in the front-rear direction, and a pressing plate is provided for pressing and urging the banknotes from the rear of the banknotes toward the forward dispensing side. This bill dispensing device includes left and right feed rollers and left and right gate rollers, and is configured to sequentially dispense one bill from between these rollers.

However, the above-mentioned conventional device has a problem in that when a banknote is loaded into the banknote storage section, if the banknote is tilted, or when a deformed banknote is fed out, skew tends to occur in the fed banknote. Ta.

[0005]

[Problems to be Solved by the Invention] This invention solves the problem regardless of the deformation of the paper sheet or the inclination of the paper sheet when loading the paper sheet.
An object of the present invention is to provide a paper sheet feeding device capable of effectively preventing skew of fed paper sheets.

[0006]

[Means for Solving the Problems] The present invention is a paper sheet feeding device that feeds paper sheets from between a feed roller and a gate roller, and includes a feed roller divided into left and right, and each feed roller as described above. A motor that drives the left and right rollers independently, a left and right paper sheet detection sensor arranged after the feed rollers, and a motor that drives the pair of feed rollers and the gate based on the output of each of the paper sheet detection sensors. The paper sheet feeding device is characterized in that it is equipped with a control means for independently controlling the axial position between the rollers on the left and right sides.

[0007]

According to the present invention, the above-mentioned control means controls, for example, the axial position of the feed roller independently on the left and right sides based on the output of the above-mentioned paper sheet detection sensor. When the axial position of the feed roller is variably controlled, the axial distance between the feed roller and the above-mentioned gate roller changes, and for example, by narrowing the same distance, sheet conveyance resistance increases. This reduces the conveyance speed of the paper sheet on the leading side.

[0008]

[Effects of the Invention] Therefore, there is an effect that skew can be reliably eliminated while paper sheets detected at the rear of the feed roller are fed by the left and right feed rollers.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. The drawings show a banknote feeding device, and in FIG. 1 shown in a side view and FIG. 2 shown in a plan view, a large number of banknotes A are stored in the front-rear direction in a standing state on the bottom plate 2 of the banknote storage section 1, A pressing plate 5 is provided from the rear of the banknote A to press and bias the banknote A toward the pick roller 3 and the feeding section 4 in the front.

Further, the above-mentioned feeding section 4 is provided with feed rollers 6, 7 which are divided into left and right, and left and right gate rollers 8, 9 corresponding to these feed rollers 6, 7. The feed roller 6 (lower feed roller in FIG. 2) is connected to the first motor 1 via the spline shaft 10.
1, and the above-mentioned right feed roller 7 (the upper feed roller in FIG. 2) is connected to the second feed roller 7 through the spline shaft 12.
These separate motors 11, 13 are connected to the motor 13.
Accordingly, the above-mentioned left and right feed rollers 6 and 7 are configured to be driven independently.

Furthermore, a banknote guide plate 14 is provided below the gate rollers 8 and 9, spaced apart from the peripheral surfaces of the feed rollers 6 and 7, and behind this banknote guide plate 14, a banknote guide plate 14 is provided below the gate rollers 8 and 9. Left and right nipping rollers 15, 15 are disposed to nip the banknote A between them.

After the feeding by the feed rollers 6 and 7, there are a first sensor 16 and a second sensor as banknote detection sensors.
Sensors 17 are arranged at left and right positions. Each of these sensors 16 and 17 can be constituted by a photoelectric sensor or the like in which a light-emitting element and a light-receiving element are vertically arranged opposite to each other with the banknote A in between, as shown in FIG. Note that rubber members 18 and 19 whose outer surfaces are formed into sawtooth shapes are attached to the peripheral surfaces of the feed rollers 6 and 7 described above.

By the way, the above-mentioned left feed roller 6
3 for the small diameter roller boss portion 6a as shown in FIG.
Two large-diameter roller portions 6b are integrally formed, and roller portions 8a, 8a of the gate roller 8 described above are disposed between each of these roller portions 6b, 6b.

Further, a spline hole is formed in the above-mentioned roller boss portion 6a as shown in FIG.
A shift fork 21 is disposed in the ring groove 20 formed at one end of the roller boss portion 6a, and this shift fork 21 is
It is configured to control the movement of the feed roller 6 in the axial direction using a pulse motor 22 and a screw 23. The shift fork 21 described above is biased by a spring 24 that prevents minute vibrations and positions the shift fork 21.

Similarly, the feed roller 7 on the right side described above has three large diameter roller parts 7b integrally formed with a small diameter roller boss part 7a, as shown in FIG. The roller portions 9a, 9a of the gate roller 9 described above are arranged between them.

Further, a spline hole is formed in the above-mentioned roller boss portion 7a, and this spline hole is attached to the above-mentioned spline shaft 12 so as to be able to move axially, and a shift groove is formed in the ring groove 25 formed at one end of the roller boss portion 7a. A fork 26 is provided, and the shift fork 26 is controlled to move in the axial direction of the feed roller 7 by a second pulse motor 27 and a screw 28. The shift fork 26 described above is biased by a spring 29 that prevents minute vibrations and positions the shift fork 26.

FIG. 3 shows the control circuit of the bill dispensing device,
The CPU 30 controls the first motor 11, the second motor 13,
The first pulse motor 22 and the second pulse motor 27 are driven and controlled, and the RAM 32 stores necessary data.

Here, the above-mentioned CPU 30 controls left and right signals via each pulse motor 22, 27, screws 23, 28, and shift forks 21, 26 based on the outputs of the first and second sensors 16, 17. This is a control means that independently controls the positions of the feed rollers 6 and 7 in the axial direction.

The operation of the bill dispensing device constructed as described above will be explained with reference to the flowchart shown in FIG.

When the first motor 11 and the second motor 13 are driven to rotate the left and right feed rollers 6, 7 and the pick roller 3 is rotated in the feeding direction, the banknotes A in the banknote storage section 1 are moved to the front row. One sheet is sequentially taken out from each roller, passing between rollers 6 and 8, between 7 and 9, between 6 and 15, and between 7 and 15.

In the first step 41, the CPU 30 determines whether or not the first sensor 16 has been turned ON first, and when the determination is YES, the process proceeds to the next second step 42. When the first sensor 16 is turned on first, the left side of the left side of the banknote A fed out by the feed rollers 6 and 7 is in the lead position, as shown by the virtual line α in FIG. In the second step 42 and the third step 43, the CPU
30 drives the first pulse motor 2 to drive each element 23, 2.
1, the left feed roller 6 is slightly axially moved in the axial direction.

When the feed roller 6 on the left side moves axially, the distance L1 between the roller portion 6b of the feed roller 6 and the roller portion 8a of the gate roller 8 becomes narrower, and the bill conveyance resistance increases, so that the bill A The conveyance speed on the left side is reduced and the skew is eliminated.

On the other hand, when the determination in the first step 41 is NO, the process moves to another fourth step 44 . In this fourth step 44, the CPU 30 turns on the second sensor 17 first.
If the judgment is NO, it is normal feeding without skew, so the process returns to the first step 41 described above, while if the judgment is YES, the process moves to the next fifth step 45. When the second sensor 17 is turned on first, the right side of the left and right banknotes A fed out by the feed rollers 6 and 7 is in the lead position, as shown by the virtual line β in FIG. In the fifth step 45 and the sixth step 46, the CPU 30 controls the second pulse motor 2.
7 to slightly axially move the right feed roller 7 in the axial direction via the respective elements 28 and 26.

When the feed roller 7 on the right side moves axially, the distance L2 between the roller portion 7b of the feed roller 7 and the roller portion 9a of the gate roller 9 becomes narrower, and the bill conveyance resistance increases, so that the bill A The conveyance speed on the right side is reduced and the skew is eliminated.

As described above, since the feed rollers 6 and 7 are independently controlled in the axial direction on the left and right sides, the banknotes A detected at the rear of the feed rollers 6 and 7 are
This has the effect of reliably eliminating skew while feeding out the feed rollers 6 and 7 on the left and right sides.

Regarding the correspondence between the configuration of the present invention and the above-described embodiments, the paper sheet of the present invention corresponds to the banknote A of the embodiment, and similarly, the motors are the first motor 11 and the second motor 13. Corresponding to this, the paper sheet detection sensor is the first sensor 1.
6 and the second sensor 17, the control means is a CPU
However, the present invention is not limited to the configuration of the above-described embodiment.

For example, a fuzzy controller having a fuzzy rule table may be connected to the output stage of the CPU 30 to drive and control the pulse motors 22 and 27 in accordance with the degree of skew.

Furthermore, although the positions of the feed rollers 6 and 7 are varied, the positions of the gate rollers 8 and 9 may also be variably controlled.

[Brief explanation of drawings]

FIG. 1 is a side view showing a bill dispensing device of the present invention.

FIG. 2 is a plan view of the main part of FIG. 1;

FIG. 3 is a control circuit block diagram.

FIG. 4 is a flowchart showing skew elimination processing.

[Explanation of symbols]

6, 7...Feed roller 8, 9...gate roller 11...First motor 13...Second motor 16...first sensor 17...Second sensor 30...CPU A...Banknotes

Claims (1)

[Claims] [Claim 1] A paper sheet feeding device that feeds paper sheets from between a feed roller and a gate roller, wherein the feed roller is divided into left and right portions, and each of the above-mentioned feed rollers is driven independently on the left and right sides. The motor, the left and right paper sheet detection sensors arranged after the feeding of each of the feed rollers, and the axial position between the pair of feed rollers and gate rollers based on the output of each of the paper sheet detection sensors. and a control means for independently controlling the left and right sides.