JPH0741192A - Turning-up delivery device for paper sheet - Google Patents

Abstract

PURPOSE:To perform constantly stable turning-up delivery operation by providing a press force regulating means to regulate the press value of a press plate when an improper press value is detected by a sheet press detecting means and a control means to control drive of a pickup roller at an estimated optimum turning-up operation timing. CONSTITUTION:During turning-up delivery of bank notes, a press value in turning-up delivery direction exerted on the whole of bank notes accumulated at a bank note accumulation cassette 12 through a strain detecting sensor S1 is detected by a CPU 61. When it is decided that a press value is an optimum press value suitable for roll-up operation, a starting timing optimum to a pickup roller 16 corresponding to a vibration period at which the whole of the accumulated bank notes is vibrated is estimated by the CPU 61 and a pickup motor M2 is started. One bank note 11 is separated from the upper surface of the accumulated bank notes by means of a pickup roller 16. When a detected press value is improper, a press motor M1 is driven and controlled so that a press value is adjusted to an optimum value to regulate a press force on the whole of the accumulated bank notes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet feeding device which is internally configured in an automatic transaction machine for handling paper sheets such as banknotes, and more specifically to a paper sheet feeding performance by a turning operation. The present invention relates to a sheet-feeding-out device for improving paper sheets.

[0002]

2. Description of the Related Art As shown in FIG. 10, a paper sheet unwinding device of the above-described example stores a large number of paper sheets 102 ... In a paper sheet storage cassette 101 in a vertically stacked manner and stores them. The entire paper sheet is pressed from below by a pressing plate 103, and a pickup roller 104 for turning up one sheet is provided opposite to the upper surface of the pressed paper sheet 102.
Is intermittently contacted with the upper surface of the paper sheet 102 so that the paper sheet 10
2 is rolled up one by one and fed out.

In this case, the pickup roller 104 is
In order to obtain the frictional force required for the turning operation, the paper surface is intermittently contacted as if hitting it, and the entire paper sheet subjected to the intermittent anti-pressing load by the pickup roller 104 vibrates in the stacking direction. Because of this vibration, the contact timing between the pickup roller 104 and the paper sheet 102 is likely to vary depending on various conditions, and a stable turning operation cannot be achieved.

As shown in FIG. 11, the principle of this turning operation is that the vibration period of the entire paper sheet is greatly different between when a small number of sheets are stacked A and when a large number of sheets are stacked B, especially in the case of banknotes,
The vibration cycle of banknotes changes depending on the paper quality state such as the degree of circulation, crease, deformation and the like, and the temperature and humidity. When contacting with the pickup roller, for example, when a small number of sheets are stacked, A, the vibration cycle waveform upper part A1 has a rolling load. It becomes large, and the turning load is optimal at the middle part A2 of the vibration cycle waveform.
At 3, the turning load is small. As a result, the contact timing between the paper sheet and the pick-up roller is always different, which causes a turning failure.

[0005]

SUMMARY OF THE INVENTION Therefore, according to the present invention, when a paper sheet is rolled up and fed out, a pressing force corresponding to the vibration characteristic of the entire accumulated paper sheet is adjusted so that the paper sheet is always fed out in a stable manner. It is an object of the present invention to provide a sheet-feeding-out device capable of performing an operation.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a large number of sheets arranged and stored in a sheet storage portion are pressed by a pressing plate from the rear side in the stacking direction, and are pressed to the front side of the pressed sheets. What is claimed is: 1. A paper sheet unwinding device including a pickup roller that intermittently comes into contact and rolls up the paper sheets one by one, the paper sheet detecting a pressing force of the pressed paper sheet. When the pressing detection means and the paper sheet pressing detection means detect an unsuitable pressing value, the pressing force adjusting means for adjusting the pressing force of the pressing plate, and the entire sheet generated during the turning operation by the pickup roller A vibration cycle detecting means for detecting a vibration cycle and an optimum turning operation timing of the pickup roller corresponding to the vibration cycle detected by the vibration cycle detecting means are estimated, and the pickup roll is detected at the estimated optimum turning operation timing. Characterized by comprising a control means for driving and controlling the la.

[0007]

According to the present invention, when the paper sheet is turned, the paper sheet pressure detecting means first detects the degree of pressing of the paper sheet, and if the pressing value is unsuitable, the pressing force is changed each time. The adjusting means is controlled to set the optimum pressing value, and then the vibration cycle detecting means detects the vibration cycle of the entire paper sheet that occurs during the turning operation by the pickup roller, and the pickup roller corresponding to this detected vibration cycle. The control means estimates the optimum turning operation timing, and the pickup roller is driven and controlled at the estimated optimum turning operation timing.

[0008]

As a result, even if the accumulated amount of paper sheets fluctuates and the vibration characteristic of the entire paper sheet changes due to various changes in the state of the paper material to be rolled up, a constant value corresponding to the vibration characteristic is obtained. By making contact at the contact timing, the paper sheet and the pickup roller can always be brought into contact with each other at the optimum pressing value and at the optimum turning operation timing. Therefore, regardless of the unstable vibration of the entire sheet that occurs during the turning operation, it is possible to always perform the optimum turning operation that corresponds to the changing state of the sheet.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a bill-feeding-out device. This bill-feeding-out device has a pressing plate 13 disposed below a bill stacking cassette 12 in which bills 11 are stacked in a vertical direction. The pressing plate 13 includes a pinion 14 driven by a pressing motor M1 and a rack 1 vertically installed on the pressing plate 13.
5, the pressing plate 13 is engaged with the banknote stacking cassette 1
2 is moved up and down, and when the unwinding pressure is increased, it is moved up to press and urge the whole of the accumulated banknotes 11 upward,
Conversely, when lowering the feed pressure, lower it.

On the other hand, a pickup roller 16 and a pickup motor M2 for the pickup roller 16 are provided above the banknote stacking cassette 12.
1, a stopper 17, a strain detection sensor S1, a turning detection sensor S2, a bundling holder 18, and a turning lever 19.

The pick-up roller 16 has a half-moon shape formed of a high-friction elastic body such as rubber that turns one banknote 11 by one rotation, and the pick-up roller 16 is opposed to the upper opening 20 of the banknote stacking cassette 12. The rotating shaft of the roller 16 is connected to a pickup motor M2 for turning one sheet.

The banknotes on the uppermost surface, which face the pickup roller 16 below via the upper surface opening portion 20, are turned over to both stoppers 17, 17 which are bent inward on both upper sides of the banknote stacking cassette 12. In this state, the biasing pressure of the bills that have been turned over is detected by the strain detection sensor S1 attached to one stopper 17, and the turned-up bills are detected and confirmed by the turning detection sensor S2. There is.

FIGS. 2 to 5 show the process of turning up one bill, and FIG. 2 shows the first separation start state, in which the uppermost bill 11 is contacted at the initial stage of rotation of the pickup roller 16,
From this, the turning operation is started.

FIG. 3 shows a state in which the separation of one banknote is completed,
As the pick-up roller 16 rotates in the turning direction, the banknotes in a flat state corresponding to the pick-up roller 16 are curled and protruded with the central portion of the paper surface being lifted with the position of the stopper 17 (the left side in the drawing) on the turning direction side as the turning fulcrum. The bills thus separated are separated from the accumulated bills to form a curved portion in the upper space.

FIG. 4 shows a bundling start state for bundling the separated banknotes. When the separation is completed, the pickup roller 16 is rotated and retracted, and then the turning lever 19 is formed in the space of the curved portion formed in the central part of the banknote 11. The banknotes 11 are rolled up by intervening with, and the rolled up banknotes are guided to the position of the holder 18 by bundling the banknote 17 with the stopper 17 as a fulcrum.

FIG. 5 shows the end state of bundling, and the turning lever 1
The banknotes 11 rolled up at 9 are bundled in the holder 18
Is locked and bundled at the position of
Is retracted and the bill turning operation is completed.

Such a turning operation is repeated so that the bill 11
Banknotes 1 that are turned one by one and are bundled in a predetermined number
1 ... are delivered through a delivery path (not shown) that is continuously provided in the subsequent stage.

FIG. 6 is a block diagram of a control circuit of the bill feeding device, in which the CPU 61 controls each circuit device according to a program stored in the ROM 62, and the control data is readablely stored in the RAM 63.

In the strain detecting sensor S1, a piezoelectric element for detecting strain is attached to the stopper 17, the degree of strain detected by this piezoelectric element is amplified by a dynamic strain amplifier, and then an FFT analyzer (high-speed Fourier transform analyzer) is used. By extracting the vibration distribution from the detected vibration waveform and analyzing it, the pressing value applied to the entire accumulated bill is detected.

Further, the turning detection sensor S2 is provided with a photoelectric detection area set at a position corresponding to the turning of the bill 11 which is turned by the turning lever 19, and photoelectrically detects the bill 11 rolled during the turning operation of the bill. To do.

The pressing motor controller 64 drives and controls the pressing motor M1 so that the pressing value of the banknotes 11 that are stacked in the banknote stacking cassette 12 and are on standby are the optimum pressing value, and the pickup motor controller 65 is used by the pickup motor controller 65. The pickup motor M2 is drive-controlled so that the timing of turning up the bills is optimized.

The turning lever drive unit 66 drives and controls the turning lever 19 in synchronization with the turning operation timing of the pickup roller 16.

By the way, while the whole stacked banknotes 11 ... Stacked in the banknote stacking cassette 12 are urged upward, the pickup roller 16 receives an intermittent load from above in the intermittent counterpressing direction during the turning operation. As a result, the entire stack of bills vibrates vertically. The vibration cycle 71 (see FIG. 7) of the entire accumulated banknote is detected through the FFT analyzer described above, and the optimum turning operation timing 72 of the pickup roller 16 corresponding to the detected vibration cycle 71
Is estimated by the CPU 61. Then, the pressing motor M1 is adjusted so that the estimated optimum turning operation timing 72 is reached.
The drive timing is controlled (see FIG. 8).

As a result, the contact timing between the pickup roller 16 and the banknote 11 can be optimally controlled and managed, and stable rolling can be performed in response to various changes such as an increase / decrease in the stacking amount and a change in the paper quality of new and old bills. The action can be performed.

The processing operation of the bill unwinding and feeding device thus constructed will be described with reference to the flowchart of FIG. Now, when the bills are fed out, the CPU 61 detects the pressing value in the feed-out direction applied to the entire bills accumulated in the bill accumulating cassette 12 via the strain detection sensor S1, and this pressing value is suitable for the flipping operation. If the optimum pressing value is determined (steps n1 to n3), then the CPU 61 estimates the optimum activation timing with the pickup roller 16 corresponding to the vibration cycle in which the entire banknote stack vibrates (step n4), and this estimation is performed. The pick-up motor M2 is started so that the optimum start timing is reached, and based on this, the pick-up roller 16 moves the banknote 11 from the upper surface of the banknote stack.
1 is separated, and then the turning lever 19 turns to guide it to the bundling position, and the bundling holder 18 bunches it. When this one-sheet turning detection sensor S2 detects and confirms, the one-sheet turning operation is completed, and the next two-sheet turning operation is started (steps n5 to n7).

By the way, when the pressing value of the entire stack of bills pressed in the turning direction is detected, if the detected pressing value is unsuitable, the pressing motor M is set to the optimum pressing value.
1 is drive-controlled to adjust the pressing force for the entire stack of banknotes (step n8).

If the bill is being turned at the optimum turning timing, the next turning timing is synchronized with the turning operation (step n9).

As described above, even if the stacking amount of banknotes fluctuates and the paper quality state to be turned over varies and the vibration characteristic of the entire banknote changes, the contact is made at a constant contact timing corresponding to the vibration characteristic. Correspondingly, the bill and the pickup roller can always be brought into contact with each other with an optimum pressing value and an optimum turning operation timing. Therefore, regardless of the unstable vibration of the entire bill that occurs during the turning operation, it is possible to always perform the optimum turning operation that corresponds to the changing state of the bill.

In the correspondence between the configuration of the present invention and the above-described embodiment, the paper sheet of the present invention corresponds to the banknote 11 of the embodiment, and hereinafter, similarly, the paper sheet storage unit is the banknote stacking cassette 12. The paper sheet pressing detection means and the vibration cycle detection means correspond to the detection control system of the strain detection sensor S1 and the CPU 61, and the pressing force adjustment means corresponds to the pressing motor M1 and the pressing motor controller 64. Correspondingly, the drive control of the turning operation timing corresponds to the pickup motor M2 and the pickup motor controller 65, and the control means corresponds to the CPU 61, but the present invention is limited only to the configuration of the above-described embodiment. Not a thing.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing a bill feeding device according to the present invention.

FIG. 2 is a side view of a main part showing a separation start state of the bill feeding device according to the present invention.

FIG. 3 is a side view of essential parts showing a state in which separation of the bill feeding device according to the present invention is completed.

FIG. 4 is a side view of an essential part showing a state in which a banknote feeding device according to the present invention starts to be bundled.

FIG. 5 is a side view of an essential portion showing a state in which the bill unwinding and feeding device of the present invention has been bundled.

FIG. 6 is a block diagram of a control circuit of the bill feeding device according to the present invention.

FIG. 7 is an output waveform diagram showing a vibration cycle of the bill feeding device according to the present invention.

FIG. 8 is an output waveform diagram showing various output waveforms of the bill feeding device according to the present invention.

FIG. 9 is a flowchart showing the processing operation of the bill feeding device according to the present invention.

FIG. 10 is a vertical sectional side view showing a conventional sheet feeding device.

FIG. 11 is an output waveform diagram showing a vibration cycle of a conventional sheet feeding device.

[Explanation of symbols]

 11 ... Paper 12 ... Banknote stacking cassette 13 ... Pressing plate 16 ... Pickup roller 61 ... CPU 64 ... Pressing motor controller 65 ... Pickup motor controller 71 ... Vibration cycle 72 ... Optimal turning operation timing M1 ... Pressing motor M2 ... Pickup motor S1 … Strain detection sensor S2… Turning detection sensor

Claims (1)

[Claims] 1. A paper sheet, which is aligned and stored in a paper sheet storage section, is pressed by a pressing plate from the rear side in the stacking direction, and intermittently contacts the front surface of the pressed paper sheet. A paper sheet unwinding device including a pickup roller for winding and feeding the paper sheets one by one, the paper sheet pressing detection means for detecting a pressure force of the pressed paper sheet, and the paper sheet. When the class pressure detecting means detects an inappropriate pressing value, the pressing force adjusting means for adjusting the pressing force of the pressing plate, and the vibration cycle detection for detecting the vibration cycle of the entire paper sheet generated during the turning operation by the pickup roller Means and a control means for estimating an optimum turning operation timing of the pickup roller corresponding to the vibration cycle detected by the vibration cycle detecting means, and drivingly controlling the pickup roller at the estimated optimum turning operation timing. Feeding device turning of the handle was a paper sheet.