JPH0126117B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a paper sheet counting machine that counts the number of paper sheets such as banknotes.

``Prior art'' Paper sheet counting machines are often used in banks, etc. to count banknotes, and their general operation is as follows:
A suction shaft that rotates while revolving around itself uses its internal vacuum pressure to attract and peel off banknotes one by one.Furthermore, a proximity sensor detects the passing of this suction shaft, and based on the output signal of this proximity sensor, the banknotes are turned over. This is to count the number of sheets. Additionally, when the holder supporting the bill rotates toward the suction shaft and the bill comes into close contact with the suction surface of the suction shaft, and a certain vacuum pressure is reached inside the suction shaft, the vacuum switch detects this. In response to this detection signal, a rotary cylinder provided with a suction shaft rotates, and the above-mentioned counting operation is started. Therefore, when the holder supporting the banknote is closed, unless the suction surface of the suction shaft and the banknote are in close contact, the inside of the suction shaft will be exposed to the outside air and a certain vacuum pressure will not be reached. Therefore, the banknotes are not attracted and counting is not started. Therefore, at the start of counting, the suction surface of the suction shaft is in close contact with the banknote (this state is hereinafter referred to as the normal position),
That is, the rotary barrel must be returned to its home position.

Therefore, in conventional paper sheet counting machines, a locking groove corresponding to the fixed position is provided on the outer peripheral surface of the rotary cylinder, and a stopper is further provided to engage with this locking groove to reverse the rotation of the rotary cylinder. while stopping at a fixed position.

As this type of sheet counting machine, ``Reverse rotation stop position of rotor of suction head in paper sheet counting machine'' (Japanese Utility Model Publication No. 33596/1983) was proposed.

"Problems to be Solved by the Invention" However, the conventional paper sheet counting machine as described above had the following problems.

When the stopper engages with the locking groove, the impact noise is large, which poses a problem in terms of quietness.Furthermore, since the locking groove must be provided, processing during manufacturing becomes complicated.

If the stopper engages halfway with the locking groove, the rotating cylinder will temporarily stop, but depending on the position of the stopper, the fixed position detection switch that detects that the rotating cylinder is in the normal position may not operate.
In this case, since the counting motor that drives the rotary cylinder continues to revolve, a burnout accident is likely to occur.

The present invention has been proposed in view of the above-mentioned circumstances, and it provides paper sheets that reliably stop the rotary tube in a fixed position without contact and that simplifies processing during manufacturing by eliminating the need for a locking groove. The purpose is to provide a counting machine.

"Means for Solving the Problems" The present invention provides the rotary cylinder at a fixed position where the suction surface of the suction shaft provided on the upper surface of the rotary cylinder is in close contact with the sheet surface of the bundle of sheets supported by the holder. In the paper sheet counting machine configured to start counting by suctioning and separating the paper sheets one by one using the suction shaft after the positioning, the rotary cylinder is provided on the outer circumferential surface of the rotary cylinder in correspondence with the suction shaft. a fixed position indicating member provided near the outer circumferential surface of the rotary tube and at a location facing the fixed position indicating member when the rotary tube is located in the fixed position, and when facing the fixed position indicating member; fixed position detection means for outputting a detection signal; counting start instruction means for outputting a counting start instruction signal when counting starts; and when the counting start instruction signal is output from the counting start instruction means, the rotary cylinder is rotated in a low speed reverse direction. , and a rotary cylinder drive control means for stopping the rotary cylinder when a detection signal is output from the fixed position detecting means.

"Operation" According to the present invention, when the rotary tube is reversely rotated at low speed by the rotary tube drive control means immediately before counting paper sheets, when the fixed position detection means detects the fixed position indicating member on the outer circumferential surface of the rotary tube, Rotation of the rotary tube is stopped. Thereby, the rotary cylinder can be reliably stopped at a fixed position without contact, so that it is possible to prevent the generation of impact noise.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing the configuration of the main parts of the paper sheet counting machine according to this embodiment.
The counting motor 4 rotates forward (in the direction of arrow A) or reversely (in the direction opposite to arrow A). In this case, the counting motor 4 is operated in a manner similar to the forward/reverse control technology for a rotary tube drive motor described in, for example, Japanese Utility Model Publication No. 43-24154 or Japanese Patent Publication No. 53-40112.
The forward and reverse rotation of the motor is controlled by a known motor control circuit (not shown) that switches and controls switches connected to the windings of the motor. When counting sheets, the rotary cylinder 1 is driven to rotate in the direction of the arrow A, and each suction shaft 2 is driven to rotate in the direction of the arrow B.

A banknote holder 6 (hereinafter abbreviated as holder 6) rotatable around a shaft 5 is provided on the side of the rotary cylinder 1. The holder 6 is connected via a link to a holder opening/closing cam 8 which is rotatably driven by a holder motor 7, and when the holder opening/closing cam 8 rotates 180 degrees, it rotates in the direction of arrow C around the shaft 5, thereby opening the holder. The holder enters the closed state, or rotates in the opposite direction of arrow D to bring the holder into the open state. Also,
The holder opening/closing cam 8 has a protrusion 8a on its outer periphery, and is provided with an open position detection switch 10 and a closed position detection switch 11 that are operated by the protrusion 8a to detect the open/closed position of the holder 6. . The open position detection switch 10 and the closed position detection switch 11 are each configured to output an "H" level signal at the time of detection.

As shown in FIG. 2, the suction shaft 2 is hollow and opens at a flat banknote contact surface 2a. The hollow part of the suction shaft 2 facing the banknotes 26 communicates with the vacuum pump 13 via a conduit 14, and the other suction shafts 2 (not shown) are closed. Further, 15 is a vacuum switch that is provided branching from the pipe line, and when the inside of the pipe line 14 reaches a predetermined vacuum pressure, the switch 1
5 is turned ON and outputs an "H" level signal. 20 is a pump motor that drives the vacuum pump 13.

On the other hand, on the outer circumferential surface of the rotary cylinder 1, as shown in FIG.
are provided at equal intervals and corresponding to the suction shaft 2, and a fixed position detection sensor 3 is provided close to the outer peripheral surface.
1 and a counting sensor 32 are provided. The fixed position detection sensor 31 and the counting sensor 32 are configured to output a signal of "H" level when facing the counting pieces 30, 30, . . . . The position of the fixed position detection sensor 31 is adjusted so that the rotary cylinder 1 is in the fixed position when the "H" level signal is output.

FIG. 3 is a block diagram showing the electrical configuration of this embodiment, and parts corresponding to those in FIGS. 1 and 2 are given the same reference numerals. In the figure, 35 is a counting start instructing device, which outputs a start pulse _S1 at the start of counting. Reference numeral 36 denotes a holder release control circuit, which outputs an "H" level signal when counting is completed and the output signal _S2 of the vacuum switch 15 becomes "L" level in the simple counting mode. Further, 40 to 44 are set/reset flip-flops (hereinafter abbreviated as FF), 45 to 47 are AND gates, 48 and 49 are inverters, and 50
is a monostable mulch. Also, 51-5
6 are output terminals.

The functions of each signal in this circuit are as follows. The output signal _S3 of the Q output terminal of FF40 is “H”
When the level is reached, the holder motor 7 is driven to close the holder 6, and the output signal S ₆ of the AND gate 45 is
When becomes "H" level, the counting motor 4 rotates in reverse at low speed, and the output signal of the Q output terminal of FF44
When _S7 becomes "H" level, the counting motor 4 rotates forward at normal speed. The signal S ₇ becomes an opening/closing signal for the AND gate 47, and when the AND gate 47 is opened, the output signal of the counting sensor 32 is outputted via the AND gate 47 as a counting signal S ₈ . Also, FF42
When the output signal S ₄ of the Q output terminal of the FF 43 becomes "H" level, the pump motor 20 is driven, and when the output signal S ₉ of the Q output terminal of the FF 43 becomes "H" level, the holder motor 7 is driven to open the holder 5. is driven.

Next, the operation of this embodiment with the above-mentioned configuration will be explained in the first section.
This will be explained with reference to FIGS.

First, the counting start instruction device 35 starts, for example, at a time.
At _t1 , when a start pulse _S1 is output as shown in FIG. 4A, FFs 40 to 42 are set.
When the FF 40 is set, the signal _S3 becomes "H" level, and the holder 6 rotates toward the suction shaft 2 side. When the holder 6 is closed, the closed position detection switch 11 is activated.
detects this and outputs an "H" level signal at time _t3 . As a result, the FF 40 is reset, the signal _S3 goes to "L" level, and the holder motor 7 is stopped, so that the holder motor 6 is held in the closed position (see FIG. 1).

On the other hand, when FF42 is set, signal _S4 becomes the fourth
As shown in FIG. 3C, the level becomes "H" and the pump motor 20 is driven. At this time, if the rotary cylinder 1 is not in the fixed position, the vacuum pressure in the pipe line 14 will not reach a predetermined value because the suction shaft 2 will communicate with the outside air, and the vacuum switch 15 will not be turned on. Furthermore, if the rotary cylinder 1 is not in the normal position, the output signal _S5 of the normal position detection sensor 31 is at the "L" level as shown in FIG. 4D, and since the FF 41 is set at this time,
The output signal _S6 of the AND gate 45 becomes "H" level as shown in FIG. 4E. When the signal _S6 becomes "H" level, the counting motor 4 rotates in reverse at a low speed. When the rotary cylinder 1 rotates in the opposite direction and reaches the home position at, for example, time _t2 , the counter piece 30 and the home position detection sensor 31 face each other, and the output signal _S5 of the home position detection sensor 31 is output as shown in FIG. It becomes "H" level as shown in . When the signal _S5 goes to the "H" level, the output signal of the inverter 49 goes to the "L" level, so the output signal _S6 of the AND gate 45 goes to the "L" level, and the counting motor 4 stops. That is, the rotary cylinder 1 stops at a fixed position.

When the rotary cylinder 1 reaches the fixed position, the suction shaft 2
Since the suction surface 2a of the sheet 26 comes into close contact with the sheet 26, the vacuum pressure inside the pipe line 14 increases, and at time t4 shown in FIG. ₄ , the vacuum pressure reaches a predetermined value and the output of the vacuum switch 15 is increased. The signal _S2 becomes "H" level. When the signal _S2 becomes "H" level, all the input signals of the AND gate 46 become "H" level,
The output signal of this AND gate 46 becomes "H" level. As a result, FF44 is set, and FF44 is set.
1 is reset. When the FF 44 is set, the signal _S7 goes to the "H" level as shown in FIG. 4, and the counting motor 4 starts normal rotation at the normal speed.
As a result, the first sheet of paper is turned over and the counting piece 30 passes through the counting sensor 32. As a result, the counting sensor 32 outputs a pulse signal. Furthermore, at time _t4 , the signal _S7 is at the "H" level and the AND gate 47 is open, so the output pulse of the counting sensor 32 is passed through the AND gate 47 as the counting signal _S8 . It is output at time _t5 shown in Figure H. Thereafter, the counting signal _S8 is output in the same manner every time one sheet of paper is turned over. Then, a subsequent circuit (not shown) performs a counting operation to count the sheets 26 when the count signal _S8 falls. Incidentally, FIG. 4 is a diagram showing the count timing.

Next, when the counting is completed and all the sheets have been turned over, the suction shaft 2 is connected to the outside air, so the pipe 14 is opened.
The vacuum pressure inside will drop and the vacuum switch will
OFF, and the signal _S2 goes to the "L" level (see time _t6 in FIG. 4). When the signal _S2 goes to the "L" level, the output signal of the inverter 48 goes to the "H" level, and the FF 44 is reset. As a result, the signal
When _S7 becomes "L" level, the forward rotation command of the counting motor 4 is stopped, and the counting motor 4 is stopped. Also,
When the FF 44 is reset, one pulse is output from the monostable multi 50, the FF 42 is reset, the signal _S4 becomes "L" level, the pump motor 20 is stopped, and all counting operations are completed.

In the above embodiment, the rotary cylinder 1 is rotated in the reverse direction at low speed at the start of counting and returned to the normal position. ), and when the fixed position detection sensor 31 detects the counter piece 30, the rotating cylinder 1 may be stopped. If you do this,
There is no need for a circuit to reverse the counting motor.

Further, the counting motor 4 in the above-described embodiment uses a motor with a mechanical brake that has a sufficiently large stopping torque.

"Effects of the Invention" As explained above, according to the present invention, there is provided a fixed position indicating member provided on the outer peripheral surface of the rotary cylinder in correspondence with the suction shaft, and a position indicating member provided in the vicinity of the outer peripheral surface of the rotary cylinder and in the fixed position detection means, which is provided at a location facing the fixed position indicating member when the fixed position indicating member is located at the fixed position, and outputs a detection signal when facing the fixed position indicating member; and a fixed position detecting means that outputs a counting start instruction signal when counting starts. a counting start instructing means, and when a counting start instructing signal is output from the counting start instructing means, the rotary cylinder is rotated in a low speed reverse direction; and when a detection signal is output from the fixed position detecting means, the rotary cylinder is stopped. Since the rotary cylinder drive control means is configured, the following effects can be achieved.

It is possible to prevent the generation of impact noise when stopping the rotating cylinder in a fixed position, achieving quietness. Also, since it is not necessary to process locking grooves on the rotating cylinder, it is possible to reduce the noise during manufacturing. Machining work etc. can be simplified and costs can be reduced.

Since it is possible to prevent problems such as the rotary tube drive motor being forced to drive, which can lead to burnout accidents, as in the past, reliability of the device can be achieved.

Because the fixed position setting operation timing was set immediately before counting,
The waste of setting operations being performed many times during non-counting is eliminated, and rapid counting can be achieved.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the configuration of the main parts of a paper sheet counter according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the structure of other main parts of the paper sheet counter according to the present embodiment. , FIG. 3 is a block diagram showing the electrical configuration of this embodiment, FIGS. 4-1 are waveform diagrams showing the waveforms of each part of the circuit shown in FIG. It is a figure which shows the count timing in . DESCRIPTION OF SYMBOLS 1... Rotating cylinder, 2... Suction shaft, 2a... Banknote contact surface (adsorption surface), 4... Counting motor (rotating cylinder drive control means), 6... Banknote holder (holder), 30...
... Counting piece (fixed position indicating member), 31... Fixed position detection sensor (fixed position detection means), 35... Counting start indicating device (counting start indicating means), 41...
...Set/reset flip-flop, 45...
AND gate, 49...inverter (rotary tube drive control means).

Claims (1)

[Scope of Claims] 1. After the rotary cylinder is positioned at a fixed position where the suction surface of the suction shaft provided on the upper surface of the rotary cylinder is in close contact with the paper surface of the bundle of paper sheets supported by the holder, the suction A paper sheet counter configured to start counting by suctioning and separating paper sheets one by one using a shaft, comprising: a fixed position indicating member provided on the outer peripheral surface of the rotary cylinder in correspondence with the suction shaft; , a fixed position provided near the outer circumferential surface of the rotary tube and at a location facing the fixed position indicating member when the rotating tube is located at the fixed position, and outputting a detection signal when facing the fixed position indicating member; a detecting means; a counting start instructing means for outputting a counting start instructing signal at the time of starting counting; and a counting start instructing means for rotating the rotary cylinder at a low speed in reverse when the counting start instructing signal is output from the counting start instructing means, and the fixed position detecting means. A paper sheet counting machine comprising: rotating barrel drive control means for stopping the rotating barrel when a detection signal is output from the rotating barrel.