JPH0659959B2 - Paper sheet stacking device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a stacking device for paper sheets such as banknotes,
Particularly, in a paper sheet stacking apparatus using an impeller, a paper sheet that is automatically corrected for a state (so-called “skew”) of a paper sheet fed to the impeller with respect to the path. The present invention relates to a leaf collecting device.

[Conventional technology]

In a conventional device of this type, for example, JP-A-57-278
As described in Japanese Patent Publication No. 57, the paper sheets are sent to the impeller by inertia.

[Problems to be solved by the invention]

However, in the above apparatus, no consideration was given to the correction of skew of the paper sheets accumulated in the impeller. For this reason, there is a problem in that a stack jam in the next stage and a paper sheet jumping out from the impeller occur.

The present invention has been made in view of the above circumstances, and an object of the present invention is to solve the above-described problems in the conventional paper sheet stacking device and to automatically perform the skew feeding of the paper sheets stacked in the impeller. An object of the present invention is to provide a paper sheet stacking device that can be corrected dynamically.

[Means for solving problems]

The above object of the present invention is to provide an impeller having a transport path including a plurality of sensors for detecting passage of paper sheets, and a plurality of spiral cuts on the outer peripheral portion into which paper sheets sent from the transport path enter. And a means for calculating the length and skew amount of the paper sheet based on a signal from the sensor, and a skew of the paper sheet for feeding the paper sheet into the impeller. A paper sheet stacking device comprising a row correction lever and means for controlling the operation of the skew correction lever in accordance with the length and skew amount of the paper sheet calculated by the calculation means. Achieved by

[Action]

In the present invention, from the paper sheet passage time, the sensor arrangement interval and the paper sheet conveyance speed in the plurality of sensors for detecting the passage of the paper sheet, the length of the paper sheet, the skew amount and the impeller are determined. The arrival time of is calculated by the calculation means, and the calculation result is compared with the contents of the skew comparison data storage unit to determine the correction amount, whereby the skew correction lever of the paper sheet is operated, It is to correct the skew of the kind.

〔Example〕

Hereinafter, as an embodiment of the present invention, an example in which a bill is a paper sheet will be described in detail with reference to the drawings.

FIG. 2 is a block diagram showing an essential part of an impeller stacking apparatus equipped with a sheet skew feeding correction mechanism, which is an embodiment of the present invention, and FIG. 1 is from the direction of arrow A in FIG. It is explanatory drawing which added the flow of control to the side view.

In both figures, 1 is a stepping motor for driving skew feeding correction levers 3 and 4 of a sheet, which will be described later, 2 is a sensor plate for detecting the fixed position of the skew feeding levers 3 and 4, 3, Reference numeral 4 denotes the skew correction lever connected to the stepping motor 1 via the shaft 7, and reference numerals 5 and 6 denote bearings for supporting the shaft 7.

Further, 8 and 9 are sensor light receiving portions for detecting passage of sheets provided on a guide 20 which will be described later, 10 and 11 are sensor light emitting portions for passage detection which are also provided on a guide 21 which will be described later, and 12 are conveyed. The paper sheets 13 and 14 which are emerging are fixed to the shaft 23, and show an impeller that rotates integrally with this. The above guide
20, 21 form a pair and constitute a transport path 24.

In FIG. 1, reference numeral 15 is a sensor drive circuit, 16 is an arithmetic control circuit, 17 is a stepping motor drive circuit, 18 is a skew comparison data storage unit, 19 is an impeller control circuit, and 25 to 28 are signal lines (signals). ing. These will be described in detail later.
In FIG. 2, reference numeral 22 indicates a fixed position detection sensor for detecting a fixed position.

A paper path 12 composed of the guides 20 and 21 is placed in the transport path 24.
A pair of conveying rollers (not shown) for conveying the sheet are arranged. The pair of conveying rollers is driven by a driving source (not shown). The sensor light-receiving portions 8 and 9 provided on the guide 20 and the sensor light-emitting portions 10 and 11 provided on the guide 21 face each other and are arranged at right angles to the traveling direction of the paper sheet 12. In addition to the length of the paper sheet 12 and the difference in the paper sheet detection time of each sensor,
The skew of the paper sheet 12 can be detected.

The fixed positions of the impellers 13 and 14 are configured to be detected by a fixed position detecting sensor plate and a sensor that detects the position of the sensor plate, which are not shown. Also impeller
13 and 14, each time the paper sheet 12 is inserted into the blade by the impeller control circuit 19 via a drive source (not shown),
It is configured to rotate by a fixed angle.

The passage sensor light receiving units 8 and 9 are connected to the arithmetic and control circuit 16 via a sensor drive circuit 15 by a signal line 25. The arithmetic control circuit 16 is connected to the skew comparison data storage section 18 via a signal line 28, and the stepping motor drive circuit 1
7, connected to the stepping motor 1 via a signal line 26, and connected to an impeller drive motor (not shown) via an impeller control circuit 19 and a signal line 27.

The stepping motor 1 has the bearings 5, 6 as described above.
Is connected to the shaft 7 which is supported via. Further, on the shaft 7, the left or right one or both of the trailing edges of the paper sheet 12 being conveyed, immediately before being fed into the impellers 13 and 14, is provided between the blades of the impellers 13 and 14. The skew feed correction levers 3 and 4 are provided for pushing down to the root. The skew feed levers 3 and 4 move from the initial position shown by the broken line to the original position of the paper sheet 12 shown by the solid line within one cycle of the conveyance interval of the paper sheet 12 at the latest. Is rotated once in the direction of arrow B to the position (initial position).

The operation of the present embodiment configured as described above will be described below.

As described above, the impellers 13 and 14 are held at predetermined positions suitable for receiving the paper sheet 12 between the wings by a sensor plate and a sensor (not shown) for detecting a fixed position. Paper sheets
12 is conveyed from the preceding stage in the conveying path 24 by the above-mentioned not-shown conveying roller pair, and the sensor 8,
When passing between 9 and 10 and 11, the sensor light receiving parts 8 and 9
Transmits the passing time of the paper sheet 12 to the arithmetic control circuit 16 via the signal line 25 and the sensor drive circuit 15.

If the paper sheet 12 is skewed at this point, a difference occurs in the passage time of the sensors 8 and 9, and this time difference, the distance between the passage sensors 8 and 9, and the paper sheet 12 The calculation control circuit 16 calculates the skew amount, length, and interval of the paper sheet 12 from the transport speed. From this result, it is checked in the skew comparison data storage unit 18 whether or not skew correction needs to be performed.

If the skew comparison data storage unit 18 determines that skew correction is necessary, the arithmetic control circuit 16
Calculates the arrival time of the paper sheet 12 to the impellers 13 and 14, the rear end position passing time of the paper sheet 12 to be pushed by the skew correction levers 3 and 4, and calculates the stepping motor drive circuit 17 and the signal. The stepping motor 1 is driven through the line 26 to rotate the skew feeding correction levers 3 and 4, and the impellers 13 and 1
The arrival time of the paper sheet 12 to the sheet 4 is transmitted to the impeller control circuit 19 via the signal line 28.

Normally, the fixed position of the skew feeding correction levers 3 and 4 is set to the transport path 24.
, The sheet 12 is retracted to a position where it does not hinder the passage of the sheet 12 (the position shown by the broken line), the sheet 12 is skewed, and the skew correction levers 3 and 4 are driven. If
From the position indicated by the broken line to the position indicated by the solid line (the position where the paper sheet 12 is pushed), the position returns to the position indicated by the broken line again, and the operation is performed in preparation for the next operation.

Use the skew correction levers 3 and 4 to move the rear end to the impellers 13 and 14
The paper sheet 12 pushed into the inside is fed into the impellers 13 and 14 while the skew is corrected and the inertia is further increased at that moment. After that, the impeller control circuit 19 rotates the impeller drive motor (not shown) by one step at the scheduled arrival time of the paper sheets 12 to the impellers 13 and 14, and moves the impellers 13 and 14 to the next position. In order to receive the paper sheet 12 of the above, it is made to stand by at the predetermined position.

Further, as a result of the above calculation, when skew feeding correction is not necessary, the arrival time of the paper sheet 12 to the impellers 13 and 14 is transmitted to the impeller control circuit 19 via the signal line 28. When the predetermined time is reached, the impeller control circuit 19 rotates the impeller drive motor (not shown) by one step via the signal line 27 to move the impellers 13 and 14 to the next paper sheet 12. Stop at the predetermined position for receiving.

By the operation as described above, the paper sheets 12 that are continuously conveyed
However, if there is skew, it will be corrected and corrected, and will be sequentially accumulated between the blades of the impellers 13 and 14.

In the above embodiment, the skew feed correction levers 3 and 4 operate as if they rotate once with the initial position as the starting point, but they may be configured to reciprocate instead of rotate. Needless to say. When it is not necessary to perform skew feeding correction, the skew feeding correction levers 3 and 4 are used.
Can be made to stand by at an appropriate position so as to be used as a guide for guiding the paper sheets 12. This operation is particularly effective when the distance between the paper sheets 12 is smaller than a predetermined distance, and therefore it is important to control the operation according to the result of the distance measurement of the paper sheets 12 by the sensors 8 and 9.

Further, the sensors 8, 9 are provided in the skew comparison data storage unit 18.
As a judgment standard of measurement data from (1) level that does not need skew correction (2) level that relatively light correction (3) set threshold value corresponding to level that relatively large correction By adjusting the operation timings of the skew feeding correction levers 3 and 4, it is possible to perform a more suitable operation.

If the arithmetic control circuit 16 is used alone, or if the sensor drive circuit 15 and the stepping motor drive circuit 17 are combined into a single-chip IC, the speed of control and the size of the device can be reduced.

〔The invention's effect〕

As described above, according to the present invention, a conveyance path including a plurality of sensors for detecting passage of paper sheets, and means for calculating the width and skew amount of the paper sheets based on signals from the sensors. A paper sheet stacking device having an impeller having a plurality of spiral cuts into which paper sheets sent from the transport path enter the outer peripheral portion, and a paper sheet for sending the paper sheets into the impeller. Skew feeding correction lever, and the sheet width and skew amount calculated by the calculating means,
Since the means for controlling the operation of the skew feeding correction lever is provided, it is possible to realize a paper sheet stacking device capable of automatically correcting the skew of the paper sheets stacked on the impeller, and It is possible to prevent jamming of paper sheets, errors such as misfeeds, and the remarkable effect of improving the reliability of the apparatus.

[Brief description of drawings]

FIG. 1 is an explanatory diagram in which a control flow is added to a side view from the direction of arrow A in FIG. 2, and FIG. 2 is an embodiment of the present invention, a blade provided with a sheet skew feeding correction mechanism. It is a block diagram which shows the principal part of a vehicle integrated device. 1: Stepping motor, 3, 4: Skew correction lever,
8, 9: Sensor light receiving unit, 10, 11: Sensor light emitting unit, 12: Paper being conveyed, 13,14: Impeller, 15: Sensor drive circuit, 16: Arithmetic control circuit, 17: Stepping motor drive Circuit, 18: skew comparison data storage unit, 19: impeller control circuit, 25-28: signal line (signal).

Claims (1)

[Claims] 1. A conveyance path having a plurality of sensors for detecting the passage of paper sheets, and an impeller having a plurality of spiral cuts on the outer peripheral portion into which the paper sheets sent from the conveyance path enter. In the paper sheet stacking device, a means for calculating the length and skew amount of the paper sheet based on the signal from the sensor, and skew correction of the paper sheet for feeding the paper sheet into the impeller. A sheet stacking apparatus comprising: a lever; and means for controlling the operation of the skew feed correction lever according to the length and skew amount of the sheet calculated by the calculation means.