JP2001048394A - Paper sheet accumulating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper sheet accumulating device so that a paper sheet can be made to surely enter without making it collide against a tip end of a vane by a simple constitution. SOLUTION: This device comprises an impeller 7 making a paper sheet continuously conveyed sheet by sheet enter between vanes 8, 8 while rotating to feed the paper sheet in a prescribed direction, accumulation part 10 accumulating the paper sheet fed by this impeller 7, and a variable guide 16. In this way, an entry angle of the paper sheet relating to the vane 8 is variably controlled in a manner wherein the paper sheet P entering between the vanes 8, 8 of the impeller 7 is prevented from abutting to a tip end of the vane 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet stacking apparatus provided in, for example, a securities processing machine for stacking inspected securities.

[0002]

2. Description of the Related Art Securities processing machines take out a large number of securities one by one, transport them, inspect them, and sort them into good or bad papers according to the inspection result and store them in a stacking device. It has become.

[0003] In order to continuously and stably accumulate securities, the accumulating apparatus is provided with an impeller that rotates at a speed lower than the transport speed of the securities. The impeller has a large number of blades, accepts incoming securities between the blades, decelerates, and changes direction according to the rotation of the blades. Then, by bringing the tip of the securities into contact with the scraping plate, the securities are scraped out from the space between the blades and are continuously and stably accumulated.

[0004]

However, conventionally, if the timing of securities entering between the blades of the impeller is shifted, the securities collide with the tip of the blade to cause a jam or not to enter between the blades. Therefore, there is a possibility that the accumulation failure may occur by jumping over the outer periphery of the blade.

[0005] In some systems, the rotation of the impeller is controlled at a high speed, so that the entering securities are moved one by one between the blades to prevent a jam.

However, this method has the disadvantages that a large drive motor is required, the control system becomes complicated, the entire apparatus becomes large, and the cost increases.

[0007] The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide a paper sheet stacking apparatus that can easily enter and stack paper sheets without colliding with the blade tip with a simple configuration.

[0008]

According to the present invention, in order to solve the above-mentioned problems, the present invention is characterized in that paper sheets continuously conveyed one by one are made to enter between blades while rotating. An impeller for guiding in a predetermined direction, an accumulating unit for accumulating sheets guided by the impeller, and a sheet entering the impeller does not abut on the tip of the impeller. Variable means for varying the angle at which the paper sheet enters the blade as described above.

According to a second aspect of the present invention, there is provided an impeller that guides a sheet, which is continuously conveyed one by one, between the blades while rotating, and guides the sheets in a predetermined direction, and guided by the impeller. An accumulating unit for accumulating incoming paper sheets, prediction means for predicting whether or not paper sheets entering the impeller collides with the tip of the blade; and Variable means for varying the angle of entry so that the paper sheet does not collide with the tip of the blade when the paper sheet is predicted to collide.

According to a third aspect of the present invention, there is provided an impeller that guides a sheet, which is continuously conveyed one by one, between blades while rotating, and guides the sheets in a predetermined direction, and is guided by the blade wheel. An accumulating unit for accumulating incoming paper sheets, calculating means for calculating the time until the paper sheets conveyed toward the impeller reach the blades, and detecting the position of the blade tip when the impeller rotates. Detection means, and prediction means for predicting whether or not the paper sheet collides with the tip of the blade based on the calculation time calculated by the calculation means and the blade tip position information detected by the detection means, When the predicting means predicts that the paper sheet collides with the tip of the blade, there is provided a variable means for changing the approach angle so that the paper sheet does not collide with the tip of the blade.

According to a fourth aspect of the present invention, there is provided an impeller that guides a sheet, which is continuously conveyed one by one, between the blades while rotating, and guides the sheets in a predetermined direction, and is guided by the impeller. An accumulating unit that accumulates incoming paper sheets, a first detection unit that detects paper sheets that approach the impeller,
Calculating means for calculating the time until the paper sheet reaches the blade based on the detection signal from the first detecting means; and second detecting means for detecting the position of the blade tip when the impeller rotates. Means, and prediction means for predicting whether or not the paper sheet collides with the tip of the blade based on the calculation time calculated by the calculation means and the blade tip position information detected by the second detection means. When the predicting unit predicts that the paper sheet collides with the tip of the blade,
Variable means for varying the angle of entry so that the paper sheet does not collide with the tip of the blade.

According to a fifth aspect of the present invention, there is provided an impeller that guides a sheet, which is continuously conveyed one by one, between the blades while rotating, and guides the sheets in a predetermined direction, and is guided by the impeller. An accumulating unit for accumulating incoming paper sheets, first detecting means for detecting paper sheets entering the impeller, and the paper sheet based on a detection signal from the first detecting means. Calculating means for calculating the time until the class reaches the blade; second detecting means for detecting the position of the blade tip when the impeller is rotating; calculating time calculated by the calculating means; Prediction means for predicting whether the paper sheet collides with the tip of the blade based on the blade tip position information detected by the detection means, and when the prediction means collides with the tip of the blade, Operate the variable guide when predicted It allowed the paper sheet is formed by including a variable means for varying the entry angle so as not to collide with the tip of the blade.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 is a front view showing a stacking device for stacking paper sheets, and FIG. 2 is a side sectional view thereof.

In FIG. 1, reference numeral 1 denotes a conveying means for conveying the paper sheets along a conveying path 2. The conveying means 1 is constituted by a conveying roller 3 and a conveying belt 4 wound around the conveying roller 3. An impeller 7 is rotatably provided on the carry-out side of the transport means 1. The impeller 7 is provided with a large number of blades 8... At predetermined intervals in the circumferential direction thereof, and paper sheets carried out from the conveying means 1 are allowed to enter between the blades 8. I have. The impeller 7 is rotated about the impeller shaft 7a so that the speed of the outer periphery of the blade is lower than the transport speed of the transport belt 4. A stacking unit 10 for stacking paper sheets is provided below the impeller 7. The stacking unit 10 is a bottom plate 10
a, the side plate 10b and the scraping plate 10c.

On the other hand, on the discharge side of the transport path 2, an entry sensor 15 as a first detecting means for detecting a sheet and the like are discharged from the transport path 2 and enter between the blades 8, 8 of the impeller 7. A variable guide 16 is provided as variable means for varying the angle at which paper sheets enter. An actuator 17 for rotating the variable guide 16 in the forward and reverse directions is connected to the variable guide 16.

A disk 20 is coaxially mounted on one end of the rotating shaft 7a of the impeller 7. Disc 2
0 has a predetermined distance between the holes 20 in the rotation direction.
… Is drilled. In the vicinity of the upper side of the disk 20, there is provided a disk sensor 21 as second detecting means for detecting the through holes 20.

FIG. 3 is a block diagram showing a drive control system of the guide 16 described above.

The entry sensor 15 and the disk sensor 21 are connected to a control unit 25 as a calculating and predicting means via a signal path, and send a detection signal as shown in FIG.

The control unit 25 calculates the time until the paper sheet reaches the tip of the blade of the impeller 7 based on the detection signal sent from the approach sensor 15, and the calculated time is sent from the disk sensor 21. Whether the detection signal corresponds to the danger area of the detection signal, that is, whether the sheet entering the impeller 7 collides with the tip of the blade 8 is predicted.

When the control means 25 predicts that the entering paper sheet collides with the tip of the blade 8, the control means 25 operates the actuator 17 of the variable guide 16, and the entering paper sheet moves to the tip of the blade 8. If it is predicted that no collision will occur, the actuator 17 of the variable guide 16 is not operated.

Next, the sheet stacking operation will be described with reference to FIGS.

As shown in FIG. 5, the paper sheet P carried out from the transport path 2 enters between the blades 8, 8 of the impeller 7. The paper sheet P that has entered between the blades 8, 8 is rotated by the rotation of the impeller 7,
As shown in FIGS. 6 and 7, after being turned to near the horizontal direction while being guided downward, the tip end thereof comes into contact with the scraping plate 10c and is extracted from the blades 8, 8. The extracted paper sheets P fall downward while being guided by the guide plate 10b, and are stably stacked on the bottom plate 10a of the stacking unit 10.

By the way, in the stacking operation of the paper sheets P, as shown in FIG. 8, depending on the position of the blade tip 8a of the impeller 7, there is a safety area A where the paper sheets can enter between the blade tips 8a. As shown in FIG. 9, a dangerous area B where paper sheets cannot enter between the blade tips 8a, 8a is periodically generated.

For this reason, depending on the timing at which the sheet P passes through the approach sensor 15, the sheet P is
In some cases, the sheet P may enter the danger area B that cannot enter the gap 8a. In this case, the paper sheet P collides with the blade tip 8a to cause a jam or the like.

Therefore, according to the present invention, when the sheet P enters the danger area B where the sheet P cannot enter between the blade tips 8a, 8a, the variable guide 16 is operated to move the sheet P to the blade tip 8a. Vary the approach angle.

That is, when the sheet P unloaded from the transport path 2 is detected by the entry sensor 15, the time required for the sheet P to reach the blade tip 8 a of the impeller 7 is calculated by the control unit 25. Then, based on the calculated time and the detection signal from the disk sensor 21, it is predicted whether or not the paper sheet P enters the dangerous area B where the paper sheet P cannot enter between the blade tips 8a.

If the control unit 25 predicts that the paper sheet P does not enter the dangerous area B, the actuator 17
Is not actuated, and the guide 16 remains stopped at the standby position.

When the control unit 25 predicts that the sheet P enters the dangerous area B, as shown in FIG.
The guide 17 is rotated by operating the actuator 17. By this rotation, the guide 16 moves from the standby position to the entrance side of the paper sheet P, and changes the entry angle of the paper sheet P to be entered to forcibly move from the danger area to the safety area side (correction area C). I will guide you to correct it. Thereby, the paper sheet P does not collide with the blade tip 8a of the impeller 7, and the blades 8,
It will enter between 8 and be well integrated.

[0030]

As described above, according to the present invention, the approach angle of the paper sheet with respect to the impeller is controlled so that the paper sheet entering between the impeller blades does not contact the blade tip of the impeller. Since it is variable by means, even if the approach timing of the paper sheet to the impeller is shifted as in the related art, it is possible to satisfactorily accumulate without contacting the blade tip.

Further, the drive system and the control system can be simplified, the size can be reduced, and the cost can be reduced, as compared with the case where the impeller is controlled at a high speed.

[Brief description of the drawings]

FIG. 1 is a front view showing a paper sheet stacking apparatus according to an embodiment of the present invention.

FIG. 2 is a side sectional view showing a paper sheet stacking apparatus.

FIG. 3 is a block diagram showing a drive control system of a guide.

FIG. 4 is a timing chart showing detection signals of an approach sensor and a disk sensor and an operation of an actuator.

FIG. 5 is a diagram illustrating a stacking operation of paper sheets, and illustrates a state in which a leading end of the paper sheets has entered between blades of an impeller from a conveyance path.

FIG. 6 is a diagram illustrating a state in which paper sheets that have entered between blades of an impeller are guided downward;

FIG. 7 is a diagram illustrating a state in which paper sheets that have entered between blades of an impeller are further guided downward and are stacked;

FIG. 8 is a diagram showing a safety area in which paper sheets entering between the blades of the impeller do not collide with the blade tip.

FIG. 9 is a diagram illustrating a danger area where papers entering between blades of an impeller collide with the blade tip.

FIG. 10 is a diagram showing a state in which the guide angle of the paper sheet with respect to the impeller is changed by the guide.

[Explanation of symbols]

P: paper sheet 7: impeller 8: blade space 10: stacking unit 15: approach sensor (first detecting means) 16: variable guide (variable means) 17: actuator (variable means) 21: disk sensor (second) Detecting means) 25 ... control unit (calculating means / predicting means)

Claims (5)

[Claims] 1. An impeller for guiding paper sheets which are continuously conveyed one by one to enter between blades while rotating and guide them in a predetermined direction, and a stack of paper sheets guided by the impellers. An accumulating section, and variable means for varying the angle at which the paper sheet enters the blade so that the paper sheet entering the impeller does not contact the tip of the blade. A paper sheet stacking device characterized by the above-mentioned. 2. An impeller for guiding paper sheets continuously conveyed one by one to enter between blades while rotating and guiding the paper sheets in a predetermined direction, and a stack of paper sheets guided by the impellers. An accumulating unit, a prediction unit that predicts whether or not the paper sheet entering the impeller collides with the tip of the blade, and that the prediction unit collides with the tip of the blade. Variable means for varying the angle of entry so that the sheet does not collide with the tip of the blade when predicted. 3. An impeller for guiding paper sheets continuously conveyed one by one into a blade while rotating between the blades and guiding the paper sheets in a predetermined direction, and a stack of paper sheets guided by the impeller. An accumulating unit, and calculating means for calculating a time until the paper sheet conveyed toward the impeller reaches the blade,
Detecting means for detecting the tip position of the blade during rotation of the impeller; and the sheet at the tip of the blade based on the calculation time calculated by the calculating means and the blade tip position information detected by the detecting means. Prediction means for predicting whether or not to collide, and when the prediction means predicts that the paper sheet will collide with the tip of the blade, the approach angle is set so that the paper sheet does not collide with the tip of the blade. And a variable means for changing the value. 4. An impeller for guiding paper sheets continuously conveyed one by one into the blades while rotating and guiding them in a predetermined direction, and a stack of paper sheets guided by the impellers. An accumulating unit, first detecting means for detecting paper sheets approaching the impeller, and the paper sheets reaching the blades based on a detection signal from the first detecting means. Calculating means for calculating the time until the rotation of the impeller, second detecting means for detecting the position of the blade tip when the impeller rotates, and calculating time calculated by the calculating means and detected by the second detecting means. Prediction means for predicting whether or not the paper sheet collides with the tip of the blade based on the blade tip position information, and when the prediction means predicts that the paper sheet collides with the tip of the blade, the paper Leaves do not collide with the tip of the blade Cormorant the paper sheet stacking apparatus for a variable means for varying the entry angle, characterized by being provided with. 5. An impeller for guiding paper sheets continuously conveyed one by one into the blades while rotating and guiding them in a predetermined direction, and paper sheets guided by the impellers. An accumulating unit, first detecting means for detecting paper sheets approaching the impeller, and the paper sheets reaching the blades based on a detection signal from the first detecting means. Calculating means for calculating the time until the rotation of the impeller, second detecting means for detecting the position of the blade tip when the impeller rotates, and calculating time calculated by the calculating means and detected by the second detecting means. Prediction means for predicting whether or not the paper sheet collides with the tip of the blade based on the blade tip position information; and a variable guide when the prediction means predicts that the paper sheet collides with the tip of the blade. Operate the paper sheets Paper sheet stacking apparatus characterized by the entry angle so as not to collide with the tip of the root is formed by comprising: a varying means for varying a.