JP2589987B2 - Paper sheet remaining amount detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The remaining amount detecting device for paper sheets (hereinafter referred to as paper sheets) in which folded and wrinkled paper sheets are mixed according to the present invention is provided. The number of rotation steps of the pulse motor until the upper guide that presses the kinds close to each other moves downward from the home position and directly presses the lower guide, and the paper placed when the upper guide moves downward from the home position The remaining number of paper sheets is detected by comparing the number of rotation steps of the pulse motor until the lower sheet is pressed while the leaves are in close contact with each other, and when feeding out the paper sheets, it is applied to the stacked paper sheets. Even when folded or wrinkled paper sheets are mixed, they are brought into close contact with each other to make the state suitable for accurate remaining amount detection.

[Industrial applications]

The present invention relates to a paper sheet remaining amount detection device used for detecting the remaining amount of paper sheets (banknotes) in, for example, a paper sheet storage (safe) installed in a financial institution or the like.

[Conventional technology]

FIG. 2 is a schematic cross-sectional view of an essential part showing a configuration example of a sheet remaining amount detecting device (hereinafter referred to as a remaining amount detecting device) to be solved by the present invention. The lower guide 2, which has a larger area than the paper sheet on which the paper 10 is placed, presses the paper sheet 10 placed on the lower guide 1 in the direction of arrow A to bring the paper sheets into close contact with each other. An upper guide having an area larger than that of the paper sheet such that the leading end of the feeding roller is brought into contact with the lower guide surface with the pressing force so as to contact the lowermost surface of the paper sheet, and then is pressed against the paper sheet. 2 is an upper guide drive mechanism for controlling the vertical movement (in the direction of arrows AA ') of which 2 is a pair of pulleys, 22 is a belt suspended between the pulleys 21,
Is a drive shaft for transmitting the rotational force of the pulse motor 15 to the pulley 21. Reference numeral 24 denotes an upper guide fixing member for fixing the upper guide 2 to the belt 22. Reference numeral 6 denotes a lower guide home position detection sensor for detecting the home position of the lower guide 1. Part, and contacts the lower guide surface and contacts the lowermost surface of the stacked paper sheets.),
Reference numeral 7 denotes a pressure detection sensor for detecting whether or not the pressing force of the upper guide 2 to the lower guide 1 has reached a predetermined pressing force (the pressing force required for the feeding roller 5 to feed the paper sheet 10).
Is a home position detection sensor for detecting the home position of the upper guide 2 (this position is also the position of the upper guide 2 when the amount of the sheets 10 on the lower guide 1 reaches the maximum amount), 11 Is a near-end detection sensor that detects the near-end amount of the paper sheet 10 placed on the lower guide 1 (a state in which the remaining amount of the paper sheet 10 is low and the paper sheet 10 needs replenishment) and outputs an arm signal. It is.

In the following, the operation of each component when feeding paper sheets is described in the second.
This will be described with reference to the drawings.

When a command to feed out the paper sheet 10 is output from a control unit (not shown), the pulse motor 15 of the upper guide driving mechanism is output.
Rotates to urge the upper guide 2 in the direction of arrow A.
Thus, the upper guide 2 presses the lower guide 1 in the direction of arrow A through the placed paper sheets 10 while bringing the placed paper sheets 10 into close contact with each other.

When the lower guide 1 pressed in the direction of arrow A by the upper guide 2 reaches the home position and the placed paper sheets 10 are in close contact with each other, the leading end of the feeding roller 5 is brought into contact with the lower guide surface through the opening of the lower guide. Matches,
When the contact with the lowermost surface of the paper sheet is started, the lower guide home position detection sensor 6 operates to temporarily stop the rotation of the pulse motor 15.

Thereafter, the upper guide 2 is gradually moved in the direction of arrow A while the pulse motor 15 repeats rotation / stop. When the pressing force on the lower guide reaches a predetermined pressing force by this operation, the paper sheets 10 placed on the lower guide 1
The contact pressure between the sheet and the feed roller 5 also becomes a pressing force suitable for feeding the paper sheet 10.

When a predetermined pressing force on the lower guide is detected by the detection sensor 7 so that the contact pressure between the sheet 10 and the feeding roller 5 becomes a pressure suitable for feeding the sheet 10, the sheet 10 is ready for feeding. Pulse motor 15
Stops the rotation.

Preparation for feeding the paper sheet 10 is completed and the pulse motor 15
Stops, the feed roller rotates in the direction of the arrow, and feeds out the paper sheets 10 placed on the lower guide 1 one by one in the right extension direction of the lower guide. When the sheet 10 is fed out and the amount of the sheet 10 on the lower guide 1 decreases, the pulse motor 15 resumes rotation, and the upper guide 2 is suitable for feeding the sheet 10. Lower guide 1 with pressing force
Press the upper paper sheet 10.

When the number of sheets 10 placed on the lower guide 1 decreases to a minimum amount (hereinafter referred to as a near-end amount of sheets), the near-end detection sensor 11 detects this and outputs an alarm signal.

When the alarm signal is output, the upper guide 2 is raised to the position where the upper guide home position detection sensor 8 operates, and the sheets 10 are replenished on the lower guide 1.

[Problems to be solved by the invention]

As is clear from the above description, the conventional remaining amount detecting device detects the near end of the sheet 10 with the near end detection sensor 11 and detects the near end amount of the sheet 10. I have. For this reason, it is indispensable to equip the near-end detection sensor 11 for detecting the near-end amount of the paper sheet 10, without which the remaining amount of the paper sheet 10 cannot be detected. However, when the near-end detection sensor 11 is provided, the number of detection circuits associated therewith increases, and thus the cost is a problem.

In particular, since the conventional remaining amount detecting device detects the remaining amount of the paper sheet 10 by the near-end detection sensor 11, the remaining amount is detected when the set value of the near-end amount is changed. Near-end detection sensor
Although the position of 11 must be moved in the vertical direction, the work of changing the installation position of the near-end detection sensor 11 is not easy because it involves mechanical work.

In addition to detecting the near-end amount, the remaining amount is 1/2
It is also necessary to know the current amount of paper sheets, such as whether it is or 1/3.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a remaining amount detecting device which is simple without using a near-end detecting sensor, and which can accurately detect the remaining amount with the paper sheets brought into close contact. It is.

[Means for solving the problem]

According to the present invention, the above-mentioned object is substantially equal to or larger than a paper sheet in which folded and wrinkled paper sheets are mixed (hereinafter referred to as paper sheets) 10 such that the entire surface is evenly placed. A flat lower guide 1 having an area and having an opening for penetrating the leading end of the feeding roller, descending from the home position toward the lower guide,
The entire surface of the sheet on the lower guide is pressed toward the lower guide, and the tip of the feeding roller is substantially equal to or equal to the sheet such that the tip of the feeding roller is brought into contact with the lower guide surface through the opening of the lower guide to contact the lowermost surface of the sheet. An upper guide 2 having a larger area, an upper guide drive mechanism 20 for controlling the up and down movement of the upper guide by driving a pulse motor 15, and a paper in a state where the upper guide presses the sheets on the lower guide to be in close contact with each other. With the pressing force on the lower guide via the leaves, the roller operates when the feeding roller in contact with the lowermost surface of the paper sheet through the opening of the lower guide reaches a predetermined pressing force to enable the feeding of the paper sheet. The upper guide is lowered from its home position by the control of the pressure detection sensor 7 and the pulse motor in the upper guide drive mechanism, and the lower guide is directly pressed. Then, the number of rotation steps (N) of the pulse motor until the pressure detection sensor detects a predetermined pressing force on the lower guide, and the upper guide presses the lower guide via the sheets on the lower guide, and the pressure detection sensor A step number comparator for comparing and detecting the remaining amount of sheets from the number of rotation steps (n) of the pulse motor until a predetermined pressing force is detected. Achieved.

[Action]

That is, in the present invention, the upper guide presses the paper sheet placed on the lower guide from above, and the paper is fed from the lowermost paper sheet. However, both the upper guide and the lower guide are flat, and Since the sheet has an area equal to or larger than the sheet, the sheets are uniformly pressed from the upper guide toward the lower guide over the entire surface.

Moreover, in this case, even if the upper guide uniformly presses the lower guide through the paper, the folded paper and the wrinkled old paper are mixed together, and the paper remaining close to each other is accurately detected. Becomes

With this pressing force, the leading end of the feeding roller 5 is brought into contact with the lowermost surface of the paper sheet through the opening of the lower guide so as to coincide with the lower guide surface. When it is ready to be extended, the pressure detection sensor detects it.

Further, in the present invention, the upper guide 2 that has moved downward from the home position UP point applies a predetermined pressing force to the pressure detection sensor 7 via the lower guide 1 on which the paper sheet 10 is not placed.
Number of rotation steps N of the pulse motor 15 until the detection is made
And a pulse until the pressure detection sensor 7 detects a predetermined pressing force on the lower guide 1 via the paper sheet by pressing the paper sheet 10 on which the upper guide 2 moved downward from the home position UP point. The remaining amount of the paper sheets 10 placed on the lower guide 1 is detected from the number of rotation steps n of the motor 15. Here, N is a numerical value determined according to the accommodation capacity capable of maximally accommodating the paper sheet 10, and n is the amount of the paper sheet 10 placed on the lower guide 1 that has been fed.

Then, the number of rotation steps N is compared with the number of rotation steps n to count the remaining amount including the near-end amount of the paper sheet and to detect and display the near-end. 0 / N indicates that the maximum amount of paper sheets is placed on the lower guide. When n is N / 2, the remaining amount is half, and when N / N, paper sheets are on the lower guide. Indicates that the class is 0.

Therefore, when it is desired to detect the near-end amount, if n ′ corresponding to the amount of paper sheets at the near-end is stored in the memory of the step number comparator in addition to N, when n = (N−n ′), Near end detection is performed.

Therefore, by changing the value of n ', it becomes easy to change the setting of the near-end amount. Further, the number N of rotation steps is a number until the upper guide descends from the home position, directly presses the lower guide, and the pressure detection sensor detects a predetermined pressing force. It is easily determined according to the size, shape, and the like.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic sectional view of an essential part showing one embodiment of the present invention, and the same parts as those in FIG. 2 are denoted by the same reference numerals.

As shown in FIG. 1, the remaining amount detecting device according to the present invention comprises:
The step number comparator 30 directly connected to the drive shaft 23 of the pulse motor 15 is configured to digitally detect the remaining amount of the paper sheet 10.

That is, the step number comparator 30 operates the pulse motor until the upper guide 2 moved downward from the home position UP point presses the lower guide 1 on which the paper sheet 10 is not placed and the pressure detection sensor 7 detects a predetermined pressing value. The lower guide 1 is pressed via the paper sheet 10 on which the upper guide 2 moved downward from the home position UP point and the number of rotation steps N of 15 causes the lower sheet 1 to be folded into the paper sheet and to be wrinkled. Even when some old papers are mixed, the papers are closely contacted with each other, and the pressure detection sensor 7 detects a predetermined pressing force (a pressure value required for feeding by the feeding roller) on the lower guide via the papers. Paper sheets placed on the lower guide 11 from the number of rotation steps n of the pulse motor 15
Digitally detect 10 remaining levels.

The principle of the apparatus for detecting the remaining amount of paper sheets according to the present invention will be described below with reference to FIG.

By rotating the pulse motor 15, the upper guide 2 is moved in the direction of arrow A from the home position UP point, and the upper guide 2 directly presses on the lower guide 1 on which the paper sheet 10 is not placed, and the lower guide is moved to the home position LP. The pulse motor moves to the point (the home position detection sensor 6 detects when the lower guide 1 reaches this LP point), and the pulse motor required until the lower guide contacts the pressure detection sensor 7 by the pressing force and the sensor detects the pressing force. The number of rotation steps N of 15 is obtained. Then, the number of rotation steps N is input to the memory of the step number comparator 30. The home position UP point is set on the lower guide 1 with the maximum amount of paper 10
Is a position corresponding to the position of the upper guide 2 when placed. The upper guide 2 is at the home position
For example, 1000 points on the lower guide 1 is located at the UP point.
Assume that this is the case where one sheet of paper 10 is placed. In this case, it is assumed that the number of rotation steps of the pulse motor is equal to the number of sheets, and the value of N is a value determined by the external dimensions of the apparatus that stores the paper sheets 10. Even if you do, determine the home position of the upper guide, lower the upper guide, press the lower guide, and grasp the maximum load capacity by counting the number of rotation steps of the pulse motor until the pressure detection sensor reaches the predetermined pressing force You can do it.

Next, the upper guide 2 is moved in the direction of arrow A from the home position UP point, and the lower guide is pressed through the paper sheets placed on the lower guide. Even if paper sheets are folded or wrinkled due to this pressing, the paper sheets are in close contact with each other, and the remaining amount can be accurately detected. When the leading end of the feeding roller coincides with the lower guide surface through the opening of the lower guide due to the pressing force, the pressing force reaches a predetermined pressing force required for feeding by the feeding roller, and the pressing force is increased. Detected by the detection sensor 7,
The number n of rotation steps of the pulse motor 15 corresponding to the movement amount so far is input to the step number comparator 30. Then, it is assumed that n is equal to 600 in this case, assuming that the number of paid-out sheets is equal to the number of rotation steps of the pulse motor.

The step number comparator 30 outputs N
And the remaining amount is detected based on the value of n. In this case, in the step number comparator, N−n = 1000−600 = 400 is the remaining amount, n / N = 600/1000 = 3/5 is the paid-out amount, and 2/5 is the remaining amount. Output as a detection result.

Further, assuming that the remaining amount n 'as the near end amount is 100, the memory of the step number comparator has N = 1000, n' = 10
0 is stored.

This can indicate that the near end has been reached when the step number comparator reaches n = 900 or when n / N = N−n ′ / N = 9/10 is output.

The value of n 'is arbitrarily determined for each device,
It is sufficient that the number of steps is stored in the step number comparator together with N, and the setting of the near-end remaining amount becomes extremely simple.

In the remaining amount detecting device of the present invention, as shown in FIG.
10, the pressure detection sensor 7 detects whether or not the pressing force of the upper guide 2 has reached a pressing force suitable for feeding the paper sheet 10, but as described above. Paper sheets 10 that are foldable (for example, folded in two or four, etc.) or wrinkled and tend to be bulky 10
In this case, the sheet guides 10 can be pressed with an appropriate pressing force by the upper guide 2 larger than the sheet guides so that the sheets 10 come into close contact with each other. Will be done.

〔The invention's effect〕

As is apparent from the above description, in the remaining amount detecting device according to the present invention, the area of the upper guide and the lower guide is set to be equal to or larger than the sheet, and the upper guide is lowered to press the sheet against the lower guide. The distance between the upper guides is converted into the number of rotation steps of the pulse motor, and the remaining amount of the paper sheets is converted into a state suitable for accurate remaining amount detection. Since the amount detection is performed digitally, not only can the remaining amount be detected at all times, but also the setting change of the near-end remaining amount can be performed extremely easily. In addition, in the case of this remaining amount detection device, there is no need to install a near-end detection sensor, which is economical.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of an essential part showing one embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of a main part showing a configuration example of a remaining amount detection device as a solution target of the present invention. In the drawing, 1 is a lower guide, 2 is an upper guide, 5 is a feeding roller, 6 is a home position detection sensor of the lower guide, 7 is a pressure detection sensor, 8 is a home position detection sensor of the upper guide, 10 is paper sheets, and 11 is paper sheets. Near end detection sensor, 15 is a pulse motor, 20 is an upper guide drive mechanism, 21 is a pulley, 22 is a belt, 23 is a drive shaft, KP is a position where the amount of paper on the lower guide is in the near end state, LP is a lower guide The home position and UP indicate the home position of the upper guide, respectively.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-277529 (JP, A) JP-A-60-26952 (JP, A) JP-A-60-87136 (JP, A) JP-A-60-87 106738 (JP, A)

Claims (1)

(57) [Claims] 1. An area which is substantially equal to or larger than a paper sheet in which folded and wrinkled paper sheets are mixed (hereinafter referred to as "paper sheets") 10 such that the entire surface thereof is evenly placed. And a flat lower guide 1 having an opening for penetrating the leading end of the feeding roller. The lower guide 1 descends from the home position toward the lower guide, and presses the entire sheet on the lower guide toward the lower guide. The upper guide 2 has an area substantially equal to or larger than the paper sheet so that the upper guide is brought into contact with the lower surface of the paper sheet through the opening of the lower guide so as to contact the lowermost surface of the paper sheet. The upper guide drive mechanism 20, which is controlled by the driving of the lower guide, presses the paper sheets on the lower guide, and the pressing force on the lower guide through the paper sheets in a state of being in close contact with each other. A pressure detection sensor 7 that operates when a feeding roller that is in contact with the lowermost surface of the sheet via the opening of the guide has a predetermined pressing force that allows the sheet to be fed, in the upper guide driving mechanism. The upper guide is lowered from its home position by the control of the pulse motor, the lower guide is directly pressed, and the number of rotation steps (N) of the pulse motor until the pressure detection sensor detects a predetermined pressing force on the lower guide, and The guide presses the lower guide via the sheet on the lower guide, and the remaining amount of the sheet is compared and detected from the number of rotation steps (n) of the pulse motor until the pressure detection sensor detects a predetermined pressing force. A paper sheet remaining amount detection device comprising a step number comparator.