JPS631668A - Sheet accumulating device - Google Patents

Abstract

PURPOSE:To make it possible to automatically correct skews of sheets accumulated in an impeller, by controlling the motion of a skew correcting lever for feeding sheets into the impeller in accordance with the widths and skew angles of the sheets, which are computed. CONSTITUTION:When sheets 12 such as bank notes or the like are conveyed into a conveying passage 24 in a skew condition, a time difference occurs between the times of passing the light emitting and receiving sections 8, 10, 9, 11 of a sensor section, and therefore, a computing and control circuit 16 calculates the skew angles, lengths and intervals of the sheets 12 in accordance with the above-mentioned time difference, the distance between the sensors and the conveying speed of the sheets 12. Further, if the correction of a skew is required in view of judgment by a skew data memory device 18, the times of arrival of the sheets at impellers 13, 14, the time of passing of the leading end of the sheet 12 to be pushed in by skew correcting lever 3, 4 are calculated so as to rotate the latter, and the times of arrival of the sheets 12 at the impellers 13, 14 are transmitted to an impeller control circuit 19. Thus, it is possible to automatically correct the skews of sheets accumulated in the impellers.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to (1) a stacking device for paper sheets such as banknotes;
In particular, in paper sheet stacking devices that use impellers, the paper sheets that are fed into the impeller and are tilted with respect to the path (so-called "skewing") are automatically corrected. This invention relates to a leaf accumulating device.

[Conventional technology]

In conventional devices of this type, for example,
As described in Japanese Patent No. 27857, one sheet of paper was fed into an impeller by inertia.

[Problem that the invention seeks to solve]

However, in the above-mentioned apparatus, no consideration was given to correcting the skew of the filter paper sheets accumulated on the impeller. This has caused problems such as stack jams in the next stage and paper sheets flying out from the impeller.

The present invention has been made in view of the above circumstances, and its purpose is to solve the above-mentioned problems in conventional paper sheet stacking devices, and to automatically skew the filtered paper sheets stacked on the impeller. An object of the present invention is to provide a paper sheet stacking device capable of correcting.

[Means for solving problems]

The above-mentioned object of the present invention is to provide a conveyance path equipped with a plurality of sensors for detecting the passage of paper sheets, and an impeller equipped with a plurality of spiral notches on the outer periphery into which filtered paper sheets sent out from the conveyance path enter. A sheet stacking device comprising: means for calculating the length and skew amount of the sheet based on a signal from the sensor; and a sheet slant for feeding the 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 according to the length and skew amount of the paper sheets calculated by the calculation means. This is achieved by

[Effect]

In the present invention, the length of the paper sheet, the amount of skew, and the impeller are determined based on the time of paper sheet passage in a plurality of sensors that detect the passage of the paper sheet, the sensor arrangement interval, and the transport speed of the paper sheet. The arrival time of the paper sheet is calculated by the calculation means, the calculation result is compared with the contents of the skew comparison data storage section, and a correction amount is determined. This is to correct the skew of the type.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, as an example of the present invention, an example in which paper sheets are used as banknotes will be described in detail based on the drawings.

FIG. 2 is a configuration diagram showing the main parts of an impeller collection device equipped with a paper sheet skew correction mechanism, which is an embodiment of the present invention, and FIG. FIG. 2 is an explanatory diagram in which a control flow is added to a side view of the vehicle.

In both figures, 1 is a sheet skew correction lever 3, which will be described later.
, 4; 2 is a sensor plate for detecting the normal position of the skew correction levers 3, 4; 3, 4 are connected to the stepping motor 1 via a shaft 7; Skew correction levers 5 and 6 represent bearings that support the shaft 7.

Further, reference numerals 8 and 9 are sensor light receiving parts for detecting the passage of paper sheets provided on the guide 20, which will be described later, and reference numeral 10 and 11 are sensor light emitting parts for detecting the passage of paper sheets, which are also provided on the guide 21, which will be described later.
Reference numeral 12 indicates paper sheets being conveyed, and reference numerals 13 and 14 indicate impellers fixed to a shaft 23 and rotating together with the shaft 23.

Note that the guides 20 and 21 form a pair to guide the conveyance path 24.
It consists of

In FIG. 1, 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 section, 19 is an impeller control circuit, 25 to 28
indicates a signal line (signal). These will be detailed later. In addition, in FIG. 2, 22 indicates a fixed position detection sensor for detecting the fixed position.

A pair of conveyance rollers (not shown) for conveying the paper sheets 12 is disposed in the conveyance path 24 constituted by the guides 20 and 21. The transport roller pair is driven by a drive source, which is also not shown. Above guide 20
The sensor light receiving section 8°9 provided on the guide 21 and the sensor light emitting section 10°11 provided on the guide 21 are arranged facing each other and at right angles to the traveling direction of the paper sheet 12. In addition to the length of the leaf 12, it is configured such that the skew of the paper sheet 12 can be detected from the difference in the paper sheet detection time of each sensor.

The home position of the impellers 13, 14 is configured to be detected by a sensor plate (not shown) for detecting the home position and a sensor for detecting the position of the sensor plate. Further, the impellers 13 and 14 are configured to rotate by a certain angle each time the paper sheet 12 is inserted into the blade by the impeller control circuit 19 via a drive source (not shown). ing.

The passage sensor light receiving sections 8 and 9 are connected to the arithmetic control circuit 16 via a signal line 25 and a sensor drive circuit 15. The calculation control circuit 16 is connected to the skew comparison data storage section 18 via a signal line 28, and the stepping motor drive circuit 17. It is connected to the stepping motor 1 via the signal line 26, and the impeller control circuit 19. Signal line 2
7 to an impeller drive motor (not shown).

As mentioned above, the stepping motor 1 has bearings 5 and 6.
The shaft 7 is connected to the shaft 7, which is supported through the shaft 7. Further, on the shaft 7, the impeller 13, 14
Immediately before being fed into the paper sheet 12, either the left or right side of the paper sheet 12 being conveyed is moved by one impeller 13.
The skew correction lever 3 for pushing the blade to the base of the blade 14
, 4 are provided. Note that the skew correction levers 3 and 4
At the latest, within one cycle of the conveyance interval of the paper sheet 12, the paper sheet 12 is moved in the direction of the arrow from the initial position shown by the broken line to the original position (initial position) through the pushed position of the paper sheet 12 shown by the solid line. It is constructed so that it makes one rotation.

The operation of this embodiment configured as described above will be explained below.

As mentioned above, the impellers 13, 14 are operated by a sensor plate and a sensor (not shown) for detecting the fixed position.

The paper sheet 12 is held at a predetermined position suitable for receiving between the wings. When the paper sheet 12 is conveyed from the previous stage through the conveyance path 24 by the aforementioned pair of conveyance rollers (not shown) and passes between the sensors 8, 9 and 10° 11, the sensor light receiving section 8, 9 transmits the passing time of the paper sheet 12 to the calculation control circuit 16 via the signal line 25 and the sensor drive circuit 15.

If the sheet 12 is skewed at this point,
Since there is a difference in the passing times of the sensors 8 and 9, from this time difference, the distance between the passing sensors 8 and 9, and the transport speed of the paper sheet 12, the arithmetic control circuit 1G determines whether the paper sheet 12
Calculate the amount of skew and the distance between two lengths. from this result,
In the skew comparison data storage section 18, it is checked whether skew correction needs to be performed.

If the skew comparison data storage unit 18 determines that skew correction is necessary, the arithmetic control circuit 1
6 calculates the time when the paper sheet 12 reaches the impeller 13, 14 and the time when the rear end position of the paper sheet 12 to be pushed by the skew correction levers 3 and 4 passes, and the stepping motor drive circuit 1 calculates the time when the paper sheet 12 reaches the impeller 13.
7 and the signal line 26 to rotate the skew correction levers 3 and 4, and to control the arrival time of the paper sheet 12 to the first impeller 13 and 14 via the signal line 28. The signal is transmitted to the impeller control circuit 19 via the signal.

Normally, the normal position of the skew correction levers 3 and 4 is as follows.

From the conveyance path 24, a position (
When the sheet 12 is retracted to the position shown by the broken line and skew has occurred and the skew correction levers 3 and 4 are driven, the position shown by the broken line is moved from the position shown by the broken line to the position shown by the solid line. After passing through the position shown (the position where the paper sheet 12 is pushed), it returns to the position shown by the broken line, and operates as if preparing for the next operation.

The rear end of the impeller 13.4 is controlled by the skew correction lever 3.4.
The paper sheet 12 pushed into the impeller 14 has its skew corrected at that moment and is further increased in inertia as it passes through the impeller 13.
．． 14. After that, the impeller control circuit 19
However, at the scheduled time when the paper sheet 12 reaches the impeller 13.14-, the impeller drive motor (not shown) is rotated by one step, and the impeller 13.14 moves to move the impeller 13.14 to the next paper sheet 12. The device is placed on standby at the predetermined position for reception.

Further, as a result of the calculation, if there is no need for skew correction, the arrival time of the paper sheet 12 to the impeller 13, 14 is determined as follows.
It is transmitted to the impeller control circuit 19 via the signal line 28. When the predetermined time is reached, the impeller control circuit 19 connects the signal line 27
The impeller drive motor (not shown) is rotated by one step to move one impeller 13° 14 to the next paper sheet 12.
and is stopped at the predetermined position for receiving.

Due to the above-mentioned operation b'=, the continuously conveyed filter paper sheets 12 are moved to the impeller 13 while the skew is corrected if there is any skew.
．． They are sequentially accumulated between 14 blades.

In the above embodiment, the skew correction levers 3 and 4 operate as if rotating once from the initial position, but it is also possible to configure them so that they reciprocate instead of rotating. Needless to say, if there is no need to perform skew correction, the skew correction levers 3 and 4
It is also possible to have the paper standby at a desired position so as to be used as a guide for guiding the paper sheets 12. This operation is particularly effective when the interval between the paper sheets 12 is narrower than a predetermined interval.
It is important to control based on the results of the interval measurement in step 2.

Further, in the skew comparison data storage section 18, a sensor 8,
As criteria for determining the measurement data from 9, set thresholds corresponding to (1) a level at which skew correction is not necessary, (2) a level at which a comparative fall correction is required, and (3) a level at which a relatively large correction is required. By adjusting the operation timing of the skew correction lever 3.degree. 4, it is possible to perform a more suitable operation.

If the arithmetic control circuit 16 alone or the sensor drive circuit 15 and the stepping motor drive circuit 17 are integrated into one chip, the control speed can be increased and the device can be made smaller.

〔Effect of the invention〕

As described above, according to the present invention, there is provided a conveyance path including a plurality of sensors for detecting the 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 notches on the outer periphery into which filter paper sheets sent from the conveyance path enter, a paper sheet for feeding the paper sheets into the impeller; According to the skew correction lever of the type and the width and skew amount of the sheet calculated by the calculation means,
Since a means for controlling the operation of the skew correction lever is provided, it is possible to realize a paper sheet stacking device that can automatically correct the skew of the filter paper sheets stacked on the impeller, and the next step is as follows. This makes it possible to prevent errors such as paper jams and misfeeds, and has the remarkable effect of improving the reliability of the device.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram in which the flow of control is added to the side view from the direction of arrow A in Fig. 2, and Fig. 2 is an illustration of a blade equipped with a sheet skew correction mechanism, which is an embodiment of the present invention. FIG. 2 is a configuration diagram showing the main parts of the vehicle aggregation device. 1. Ticking motor, 3, 4: Skew correction lever, 8
, 9: Sensor light receiving section, 10, 11: Sensor light emitting section, 12
:Paper sheets being transported, 13. L4: Impeller, 15
: sensor drive circuit, 16: arithmetic control circuit, 17: stepping motor drive circuit, 18: skew comparison data storage section,
19: Impeller control circuit, 25-28: Signal, II (signal). Patent applicant: Hitachi, Ltd. No. 1 Figure 2.5 Figure 2

Claims (1)

[Claims] 1. A paper sheet having a conveyance path equipped with a plurality of sensors for detecting the passage of paper sheets, and an impeller having a plurality of spiral notches on the outer periphery into which the paper sheets sent out from the conveyance path enter. a paper sheet skew correction lever for feeding the paper sheets into the impeller; a paper sheet skew correction lever for feeding the paper sheets into the impeller; A paper sheet stacking device comprising means for controlling the operation of the skew correction lever according to the length and skew amount of the paper sheets calculated by the calculation means.