JPH0122959B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper sheet counter that controls the start and end of counting paper sheets without using a vacuum switch.

``Prior art'' As a conventional example of a paper sheet counting machine,
The one described in Publication No. 54149 is known,
In this paper sheet counting machine, the vacuum pressure inside the suction shaft that rotates while revolving around the machine attracts and turns over the banknotes one by one, and the banknotes are picked up by the output signal of the proximity switch that detects the passage of the suction shaft. I'm trying to count it.

``Problem to be solved by the invention'' This type of conventional banknote counting machine has a vacuum switch that detects when a banknote comes into close contact with the suction shaft and a certain vacuum pressure is reached inside the suction shaft. A rotating cylinder equipped with a suction shaft was rotated in response to a signal, and bills were turned over one by one. Therefore, when the holder supporting the banknotes is closed, if the suction surface of the suction shaft and the banknotes are not in close contact, the inside of the suction shaft will pass through the outside air and a constant vacuum pressure will not be reached. Paper sheets are not picked up and counting is not started. Due to such a mechanism, a mechanism is required for stopping the rotary cylinder at a fixed position in order to return the suction shaft to a fixed position at the start time.

In addition, even if the rotary tube is stopped at a fixed position and the suction surface of the suction shaft is accurately directed toward the banknotes, when counting circulating banknotes, the banknotes may have creases, so the suction surface of the may not be in close contact with each other, and in such cases, there was a problem in that even if the vacuum pump was operating, the vacuum switch would not operate forever and counting would not start.

This invention was proposed in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a counting device that can reliably start counting even when paper sheets are folded or bent. It is.

"Means for Solving the Problems" In order to achieve the above object, the present invention includes: a holder that swings loaded paper sheets to a counting position; A rotating body that rotates while revolving around the holder and has a hollow part inside, and a suction surface that communicates with the hollow part is formed on a part of the outer circumference, and the suction surface is used to hold paper sheets on the holder. a suction shaft that picks up and turns over the paper sheets one by one by communicating the hollow part with a vacuum pump in the vicinity of a rotation range facing the surface of the rotary cylinder; an actuating piece that is provided at intervals between the suction shaft and the vacuum pump and that actuates the proximity switch in synchronization with the timing at which communication between the hollow part of the suction shaft and the vacuum pump is cut off; and a signal that is output every time the proximity switch is actuated. In a paper sheet counter equipped with a sheet counting unit that counts the uncounted sheets on the holder, the uncounted sheets on the holder are determined based on the output of a paper sheet detection sensor that detects the presence or absence of transmission of a light beam irradiated to the uncounted sheets on the holder. an uncounted paper sheet detection section that detects the presence or absence of counted paper sheets; and an input of a signal from the neighboring switch immediately after the input of a detection signal indicating that there are no uncounted paper sheets from the uncounted paper sheet detection section. a counting end detection unit that detects the end of counting and outputs a completion signal; a holder motor drive control unit that controls starting and stopping of a holder motor that swings the holder to the counting position; a closed position detection switch that detects that the vacuum pump has moved and outputs a signal; a pump motor drive control unit that drives the vacuum pump on the condition that a detection signal is supplied from the closed position detection switch; a counting motor drive control section that controls the start, stop, and speed of a counting motor that drives the suction shaft; and the counting motor drive control section is configured such that the detection signal of the closed position detection switch is transmitted through a delay circuit. starts the counting motor on the condition that the input is made;
The counting motor is configured to decelerate on the condition that an end signal is supplied from the counting end detection section while the counting motor is being rotated, and to stop the counting motor in response to a detection signal from the proximity switch after a predetermined time has elapsed after deceleration. This is what happens.

"Function" According to the above configuration, when the holder is closed, a signal indicating this is supplied to the pump motor drive control section to drive the vacuum pump, and also drives the counting motor after a predetermined period of time via the delay circuit. The paper sheet on the holder is supplied to the control unit, starts the counting motor, rotates the suction shaft, and is connected to a vacuum source within a predetermined rotation range to perform suction intermittently. You can turn over the pages one by one. Then, in synchronization with the timing of turning over the suction shaft, the operating piece operates the proximity switch, and the signal from the proximity switch is counted by the sheet counting section to sequentially count the sheets on the holder. In addition, when all the paper sheets on the holder are turned over, the uncounted paper sheet detection section outputs a detection signal to that effect, and after this signal is output, the actuating piece passes, Furthermore, when a signal from the proximity switch is input, the counting motor drive control section decelerates the counting motor and, after sufficiently reducing the inertia of the rotating cylinder and suction shaft by running at low speed for a certain period of time, the proximity switch is activated. The counting motor is stopped at the timing when the detection signal from the vacuum pump is input, that is, at the timing when the suction shaft is cut off from the vacuum pump.

"Embodiment" The present invention will be described below based on an embodiment shown in FIGS. 1 and 2.

FIG. 1 shows the main parts of the counting mechanism, and FIG. 2 shows the relationship between the counting mechanism and the control circuit.

First, the counting mechanism shown in FIG. 1 will be explained. In this counting mechanism, when paper sheets S such as banknotes are placed on the holder 1 and set to the counting position shown by the chain line, the suction shaft 2 is in a state where it can come into contact with the paper sheets S. At this time, the rotating cylinder 3 supporting the suction shaft 2
When the suction shaft 2 rotates counterclockwise, the suction shaft 2 itself rotates clockwise and suctions the paper sheets S one by one by vacuum pressure, and performs flipping and counting.

When the rotary cylinder 3 rotates from θ ₁ to θ ₂ in FIG. 1, the suction shaft 2 rotates from the chain line A to the chain line B, and within this range, the inside communicates with the outside and the paper sheet is removed. Class S can be attracted. and,
In other states, the interior of the suction shaft is sealed from the outside. When the center of the first suction shaft 2 is located at θ ₂ , the next suction shaft 2 rotates to θ ₀ , a position indicated by the chain line O.

Next, when the first suction shaft 2 rotates to θ ₃ , the suction shaft 2 rotates to the position shown by the chain line C, and the next suction shaft 2 rotates from the chain line O to the chain line A. Therefore, in the example shown in FIG. 1, all the suction shafts 2 are sealed from the outside only while the rotary cylinder 3 rotates from θ ₀ to θ ₁ .

In the vicinity of the holder 1 and the rotary cylinder 3,
Paper sheet detection sensors 4A, 4B such as optical sensors are provided, and these sensors 4A, 4B detect whether or not there are uncounted (yet unturned) paper sheets S in the holder 1. ing.

Further, to continue explaining the counting mechanism with reference to FIG. It is connected to the opening/closing cam 8 by a link 9, and by the rotation of the holder opening/closing cam 8, it is swung in the direction of the suction shaft 2 to the counting position and the holder is in the closed state, or it is rotated in the opposite direction to close the holder. It becomes open. Further, on the outer periphery of this holder opening/closing cam 8, a holder 1
An open position detection switch 10 and a closed position detection switch 11 are provided for detecting the open and closed positions of the holder 1, and a start button 12 for starting the counting operation is provided on the top surface of the holder 1.

As shown in FIG. 2, the suction shaft 2 is hollow and opens at a flat contact surface 2a. The hollow part 2b of this suction shaft 2 has a vacuum pump 13
The two are connected to each other by a conduit 14.

Further, an actuating piece 15 (for example, an iron piece, etc.) is attached to the side surface of the rotary cylinder 3 in correspondence with the position of the suction shaft 2, and when this actuating piece 15 approaches, the suction shaft 2 moves at θ ₀ in FIG. A proximity switch 16 is installed to detect when a position has been passed.

Next, the configuration of the control system of the paper sheet counter with the above configuration will be explained.
It is composed of elements constituting a circuit applied to the paper sheet counter described in Publication No. 40112.

First, the control system is provided with a holder motor drive control section 21 and a pump motor drive control section 22, which control the holder motor 7 and the drive motor 23 of the vacuum pump 13, respectively.
These control units 21 and 22 control each motor 7 and 23.
A relay that opens and closes the power supply, a sequence circuit that operates each motor 7, 23 under predetermined conditions (or a logic gate circuit with an equivalent function)
It is made up of. Note that the details of the control will be explained in detail later.

The detection signal of the closed position detection switch 11 is supplied to the drive control section 25 of the counting motor 6 with a predetermined time delay via a delay circuit 24. This detection motor drive control section 25 is
A power supply circuit with an opening/closing relay and a speed adjustment function for the drive power of the detection motor 6 (for example, a power supply circuit for the holder motor 7)
When using a DC motor, there is a DC power supply with variable output voltage; when using an AC motor, there is an inverter circuit); It consists of a sequence circuit (or a logic gate circuit with an equivalent function).

Further, the signal output every time the proximity switch 16 is activated is supplied to a sheet number counting section 26, which is comprised of a counter that counts up every time the input rises.

Furthermore, the outputs of the sensors 4A and 4B, that is, the signals that are turned ON when paper sheets are present and turned OFF when there are no sheets, are formed by, for example, a sequence circuit (or a flip-flop that performs an equivalent function). The uncounted paper sheet detection section 27 is configured by a logic circuit), and the uncounted paper sheet detection section 27 outputs a binary logic signal corresponding to the presence or absence of paper sheets. Furthermore, the detection signal from the uncounted sheet detector 27 is supplied to a counting end detector 28. This counting end detection section 28 is a sequence circuit (or a logic circuit that performs an equivalent function), and determines whether or not counting has ended based on the outputs of the proximity switch 16 and the uncounted paper sheet detection section 27. I'm starting to do that.

Next, regarding the control system of each of these mechanisms,
This will be explained with reference to the time chart shown in FIG.

Timing 0 (T ₀ in Figure 3) Holder 1 is detected by paper sheet detection sensors 4A and 4B.
The existence of paper sheets S (uncounted) is confirmed, and
Timing 1 (T1 in Figure ₃ ) under the condition that the proximity switch 16 detects that the center of the suction shaft 2 is between θ ₀ and θ ₁ in Figure 1 and is in a sealed state. When the start button 12 of the holder 1 is pressed to generate a start signal, the holder motor drive control section 21 operates the holder motor 7 in response to this signal and swings the holder 1 in the direction of the suction shaft 2.

Timing 2 (T ₂ in Figure 3) When the holder 1 is in the "closed" state, the leading edge of the paper sheet S comes into contact with the suction shaft 2 or comes close to it, and the close position detection switch is activated. A signal is output from 11 and the holder motor 7
Further, the pump motor drive control unit 22 puts the pump motor 23 into operation, and the vacuum pump 13 is driven. Further, the signal of the closed position detection switch 11 is transmitted to a delay circuit 24.
is also output.

Timing 3 (T3 in Figure ₃ ) When the vacuum pump 13 is operated with the suction shaft 2 sealed, the inside of the pipe 14 rapidly reaches a constant vacuum pressure, and in response to this increase in vacuum pressure, the delay circuit is activated. A signal is output from 24, the counting motor drive control section 25 operates the counting motor 6, and the suction shaft 2 starts to revolve and rotate.

Timing 4 (T ₄ in Figure 3) When the center of the suction shaft 2 deviates from the range of θ ₀ and θ ₁ in Figure 1 and revolves in the counterclockwise direction in Figure 1, due to the clockwise rotation accompanying this revolution, , the contact surface 2a of the suction shaft 2 is communicated with the pipe line 14 via the hollow part 2b, the first sheet S is sucked, and the proximity switch 16 is turned from "ON" to "OFF". A falling signal is output. Note that this falling signal is not used at this timing 4.

Timing 5 (T ₅ in Fig. 3) The contact surface 2a of the suction cylinder 2 passes the position directly facing the surface of the paper sheet (rotary cylinder fixed position), and Timing 6 (T ₆ in Fig. 3) Further, the suction shaft 2 It revolves in a counterclockwise direction and rotates in a clockwise direction to turn up the paper sheet S while folding it between the suction shaft 2 indicated by a chain line B in FIG. 1 and the next suction shaft 2 indicated by a chain line O in FIG. At this time, the proximity switch 16 is turned "ON" again, and the rotation of the suction shaft 2 brings the contact surface 2a into the closed state. Then, when the suction shaft 2 that has finished its suction action revolves and rotates to the position shown by the chain line C in FIG. (Figure _T7 ) A falling signal that changes the proximity switch 16 from "ON" to "OFF" is output again, and this signal is transmitted to the sheet number counting section 26 to count the first sheet S. Further, the center of the next suction shaft 2 moves counterclockwise from θ 1 in FIG. ₁ , and the second sheet is suctioned, and the process is repeated.

Timing m (Tm in Figure 3) When the above-mentioned counting operation continues and all the paper sheets S on the holder 1 are turned over, the paper sheet detection sensors 4A and 4B detect the paper sheets S (uncounted). When "absence" is detected, the uncounted paper sheet detection signal is lowered, and this signal is inputted to the counting end detection section 28 via the uncounted paper sheet detection section 27.

Timing n (Tn in Figure 3) The counting end detection unit 28 is pumped by the falling signal of the proximity switch 16 from "ON" to "OFF" which is output immediately after the falling of the uncounted paper sheet detection signal. The operation of the pump motor 23 is stopped via the motor drive control section 22. Further, the counting end detection section 28 operates the counting motor drive control section 25 to reduce the rotation of the counting motor 6 to such an extent that it can be immediately stopped (set to low speed operation). Furthermore,
The sheet number counting section 26 is locked so that the falling signal of the proximity switch 16 at this timing becomes the final counting signal.

Timing _o+1 , _o+2 (T _o+1 , T _o+2 in Fig. 3) The counting motor 6 enters low speed operation, waits until the rotation of the suction shaft 2 stabilizes, and then waits for the timing _o+3 (T o +3) Figure _To+3 ) After the rotation has stabilized, a rising signal from the proximity switch 16 from "OFF" to "ON" is transmitted to the counting motor drive control section 21 to stop the counting motor 6, and the center of the suction shaft 2 is Position it between θ ₀ and θ ₁ in Figure 1. After this, the proximity switch 16 remains in the "ON" state, and by detecting the state of the proximity switch 16, it can be determined whether the inside of the suction shaft 2 is stopped in a position where it is sealed from the outside. It becomes clear.

Proximity switch 1 when this timing _o+3 has ended
6 becomes "ON", it becomes ready for the next paper sheet counting. Then, the holder 1 is returned to the position shown by the solid line in FIG. 1 by reversing the holder motor 7, etc., and then the paper sheets S are loaded into the holder 1, and the paper sheet detection sensors 4A and 4B are set to the "ON" state. Then, the conditions for the timing 0 are established and the next counting operation becomes possible.

Note that the counting motor 6 of the above embodiment is attached with a mechanical or electric brake for the purpose of increasing the braking effect when the operation is stopped and for the purpose of preventing the rotating cylinder 3 from being displaced in the stopped state. This is desirable.

"Effects of the Invention" As explained above, the present invention provides a state in which the inside of the suction shaft is sealed from the outside during its rotation;
This system utilizes repeating the state in which paper sheets can be sucked, and when the end of paper sheet counting is detected, the suction shaft is operated at a low speed, and then the suction shaft is accurately stopped in the above-mentioned sealed state. , when counting paper sheets, the vacuum pump is operated in advance to increase the vacuum pressure of the suction shaft, and then the suction shaft is started. This has the effect that paper sheets can be reliably attracted and counting can be started regardless of whether the paper sheets are folded or not.

[Brief explanation of drawings]

1 to 3 show one embodiment of the present invention, in which FIG. 1 is a plan view of the main part of the counting mechanism, and FIG.
The figure is an explanatory diagram of the relationship between the main parts of the counting mechanism and the control circuit, and FIG. 3 is a time chart of the control system in both embodiments. 1...Holder, 2...Suction shaft, 2a...Contact surface, 2b...Hollow part, 3...Rotating tube, 4A, 4B
...Paper sheet detection sensor, 6...Counting motor, 7...
... Holder motor, 10 ... Open position detection switch, 11 ... Closed position detection switch, 13 ... Vacuum pump, 14 ... Pipeline, 15 ... Actuation piece, 16 ...
...Proximity switch, 21...Holder motor drive control section, 22...Pump motor drive control section, 24...
...Delay circuit, 25...Counting motor drive control section, 2
6...Sheet number counting unit, 27...Uncounted paper sheet detection unit,
28...Counting end detection section.

Claims (1)

[Scope of Claims] 1. A holder that swings loaded paper sheets to a counting position; A holder that is provided at a position radially away from the center of rotation of a rotary cylinder, that rotates while revolving around the axis, and that has a hollow part inside. A rotating body having a suction surface that communicates with the hollow portion is formed in a part of the outer periphery, and the hollow portion is in the vicinity of a rotation range in which the suction surface faces the surface of the paper sheet on the holder. a suction shaft that is connected to a vacuum pump to pick up and turn over the paper sheets one by one; a hollow portion of the suction shaft that is provided on the outer periphery of the rotary cylinder at intervals in the circumferential direction; a paper sheet counter comprising: an actuating piece that operates a proximity switch in synchronization with the timing at which communication with the vacuum pump is cut off; and a sheet counting unit that counts a signal output each time the proximity switch is activated. uncounted paper sheet detection that detects the presence or absence of uncounted paper sheets on the holder from the output of a paper sheet detection sensor that detects the presence or absence of transmission of a light beam irradiated to the uncounted paper sheets on the holder; and a counting end that detects the end of counting by inputting a signal from the proximity switch immediately after inputting a detection signal indicating that there are no uncounted paper sheets from the uncounted paper sheet detection section and outputs an end signal. a detection unit; a holder motor drive control unit that controls starting and stopping of a holder motor that swings the holder to the counting position; and a closed position detection unit that detects that the holder has swung to the counting position and outputs a signal. a pump motor drive control unit that drives the vacuum pump on the condition that a detection signal is supplied from the closed position detection switch; and a pump motor drive control unit that controls starting, stopping, and speed of the counting motor that drives the rotating cylinder and the suction shaft. a counting motor drive control section that controls the counting motor, and the counting motor drive control section starts the counting motor on the condition that the detection signal of the closed position detection switch is input via a delay circuit. ,
The counting motor is decelerated on the condition that an end signal is supplied from the counting end detection section during rotational driving of the counting motor, and is stopped by a detection signal from the proximity switch after a predetermined time has elapsed after deceleration. paper sheet counting machine.