JPH042928Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Table of contents] - Overview - Industrial application field - Conventional technology - Problems that the invention aims to solve - Means for solving the problems - Effects - Examples - Effects of the invention [ Overview] A sensor is provided to detect the top edge of the stacked paper sheets, and the stacking table is lowered every predetermined number of sheets, and the top edge position of the stacked paper sheets can be corrected every predetermined number of descending movements. A paper sheet storage device that can stably stack paper sheets regardless of their thickness, stacking density, etc.

[Industrial application field]

The present invention relates to a paper sheet storage device such as a banknote storage safe for an automatic teller machine.

BACKGROUND ART In recent years, automatic machines such as deposit/withdrawal machines have used circulating deposit/withdrawal mechanisms, and it is necessary to stably accumulate deposited banknotes in order to feed out the deposited banknotes again for payment. In addition, in order to make it easier for bank employees to handle the device, the system is designed to continuously replenish or collect a large number of bills of multiple types stored in a single safe in units of hundreds of denomination safes.
A stable stacking operation for a large number of banknotes is required.

[Conventional technology]

The banknote storage device of an automatic machine has a structure in which banknotes inserted one by one are stacked on a vertically movable stacking stand, and when the number of banknotes increases, the stacking stand is lowered.
In conventional banknote accommodating devices, the number of banknotes thrown onto a stacking table is counted, and the stacking table is driven and controlled so as to be lowered by a certain distance every time the number of bills is set.

[Problem that the invention attempts to solve]

In conventional banknote storage devices, the stacking table was moved down a certain distance for every certain number of banknotes.
When a large number of banknotes are stacked after the downward movement is repeated several times, the height may vary due to variations in the thickness of the banknotes, differences in thickness due to folds and wrinkles between new and old banknotes, and differences in stacking density. There were problems such as not being able to obtain sufficient storage space after the stacking table was lowered, or conversely, the storage space was too large and banknotes could not be stably dropped and stored.

The present invention was devised in view of the above-mentioned drawbacks of the prior art, and it is an object of the present invention to provide a paper sheet storage device that can always achieve a stable banknote stacking operation regardless of variations in the thickness of banknotes.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention includes a retracting unit that retracts paper sheets one by one, a vertically movable paper sheet stacking table that accumulates the paper sheets retracted by the retracting unit, and a paper sheet stacking table that is movable up and down. A motor that drives the paper sheet stacking table, a paper sheet passing sensor that detects the passing of the paper sheets that the above-mentioned retracting section retracts, and a paper sheet passing sensor that detects the passing of the paper sheets that are fed in by the above-mentioned paper sheet passing section. a counter means for counting paper sheets thrown into the paper sheet stacking table; a top edge detection sensor for detecting the top end of the paper sheets stacked on the paper sheet stacking table; Control to drive the motor to lower the sheet stacking table, and to move the sheet stacking table up and down so as to correct the upper end position detected by the upper end detection sensor every predetermined number of lowering operations. Provided is a paper sheet storage device characterized by having a circuit.

[Function] The top edge of the stacked paper sheets is detected by the top edge detection sensor, and the variation in the height of the stacked paper sheets caused by variations in the thickness of the paper sheets is accumulated every predetermined number of sheets. Correction is possible by moving the table.

〔Example〕

FIG. 1 is a block diagram of a banknote accommodating device according to the present invention. A bill stacking stand 2 is provided within a bill stacking cassette 1 so as to be movable up and down. Bills 7 are stacked on the bill stacking table 2. The banknote stacking table 2 is driven by a belt 3 connected to a pulse motor 4. A reject banknote storage section 5 and a forgotten banknote collection section 6 are provided in the upper part of the banknote accumulation cassette 1. The banknotes 7 are thrown onto the banknote stacking table 2 through the opening 10 by the conveyor belt 8. Reference numeral 9 denotes an impeller which presses the inserted banknotes towards the stacking table 2 side to avoid collision with banknotes which will be thrown in later. A bill passage sensor 11 is provided in the bill insertion opening 10 . The bill passage sensor 11 has a light emitting element and a light receiving element arranged in parallel, and is used in combination with a reflecting mirror 11a arranged at an opposing position. This banknote passing sensor 11 is connected to a counter 13 and counts the number of banknotes inserted. The counter 13 is connected to a control circuit 14 for driving and controlling the pulse motor 4. The banknote insertion opening 10 is further provided with a top end detection sensor 12 for detecting the top end of the stacked banknotes 7. The upper end detection sensor 12 has a light emitting element and a light receiving element arranged in parallel, and is used in combination with a reflecting mirror 12a arranged at an opposing position. Reflector 1
As shown in the figure, the position of 2a is the upper end detection sensor 1.
It is preferable that the detection element be disposed above the position of the second detection element so that the reflected optical path is inclined with respect to the banknotes to ensure reliable detection of the upper end position of the stacked banknotes.

Next, an example of the control operation of the banknote accommodating device having the above configuration will be explained. Bills 7 are sequentially introduced and stacked onto the bill stacking stand 2 set at the initial position. The initial position is set by detecting an empty stacking table 2 using the upper end detection sensor 12.
In this state, a storage space 15 of an optimal size is formed on the stacking table 2. The counter 13 counts the inserted banknotes 7, and when a predetermined number (for example, 50) is reached, the control circuit drives the pulse motor 4 to lower the stacking table 2 by a predetermined distance. As a result, an optimal storage space 15 is again formed on the stacked banknotes 7. After repeating such a lowering operation a predetermined number of times (for example, 10 times), the stacking operation is temporarily stopped and the upper end detection sensor 12 detects the upper end of the stacked banknotes. If the upper end of the banknotes is not detected at this time, the stacked banknotes 7 are stacked at high density and are low in height and the storage space 15 is too wide. Therefore, the control circuit 14 drives the pulse motor 4 to move the stacking table 2 raise. Upper end detection sensor 1
2 stops the rising operation at the position where the upper end of the banknote 7 is detected. As a result, an optimal storage space 15 is formed on the stacked banknotes 7.

On the other hand, after a predetermined number of descending operations, the upper end detection sensor 1
2 is blocked by the stacked banknotes 7, the height of the stacked banknotes 7 is too high and the storage space 15 is too small, so the control circuit 14 drives the pulse motor 4 to lower the stacking table 2. let At this time, the stacking table 2 is further lowered by a predetermined amount from the position where the upper end detection sensor 12 detects the upper end of the stacked banknotes 7, and the stacking table 2 is raised again so that the upper end of the banknotes reaches a predetermined position and an optimal storage space 15 is formed. It is desirable to control the drive. By once lowering and then raising again in this manner, the stacking density of the stacked banknotes 7 is increased, and a stable stacking state from the next time can be obtained, as the stacking state is similar to the high-density stacking state described above.

[Effect of idea]

As explained above, in the paper sheet storage device according to the present invention, the vertical movement of the banknote stacking table is controlled based on both the banknote counter and the top end detection sensor of the stacked banknotes, so that every predetermined number of sheets is It becomes possible to check the height of the stacked banknotes and correct the position of the stacking table so that an optimum storage space is formed above the stacked banknotes. Therefore, even if there is a difference in the height of the stacked banknotes for each predetermined number of banknotes due to variations in the thickness of the banknotes or differences in the stacking density, this can be corrected, and banknotes can always be stored in a stable state. It becomes possible.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a banknote accommodating device according to the present invention. 1...Banknote accumulation cassette, 2...Banknote accumulation stand,
4...Motor, 7...Banknote, 11...Banknote passage sensor, 12...Upper end detection sensor, 13...Counter, 14...Control circuit.

Claims (1)

[Scope of utility model registration request] Retracting units 8 and 9 that retract paper sheets one by one
, a vertically movable paper sheet stacking table 2 for stacking the paper sheets fed by the feeding sections 8 and 9, a motor 4 for driving the paper sheet stacking table 2, and the above-mentioned feeding sections 8 and 9. a paper sheet passage sensor 11 that detects the passage of paper sheets retracted by the paper sheet passage sensor 11;
A counter means 13 counts the number of paper sheets 7 placed on the paper sheet stacking table 2 by counting the detection results of the paper sheet stacking table 2; Upper end detection sensor 12 to detect
Each time the counter means 13 counts a predetermined number of sheets, the motor 4 is driven to
and a control circuit 14 that moves the sheet stacking table 2 up and down so as to correct the upper end position detected by the upper end detection sensor every predetermined number of times of the lowering operation. Paper sheet storage device.