JPS634237B2 - - 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'' A bill counting machine uses vacuum pressure inside a suction shaft that rotates while revolving to attract and turn over bills one by one, and counts the bills based on the output signal of a proximity switch that detects passage of the suction shaft. It is publicly known.

In this type of conventional banknote counting machine, when a banknote comes into close contact with the suction shaft and a certain vacuum pressure is reached inside the suction shaft, the vacuum switch detects this and uses this detection signal to control the rotary cylinder in which the suction shaft is installed. It was a machine that rotated and peeled off bills one by one. 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 not be able to reach the outside air and reach a certain vacuum pressure. Therefore, banknotes are not attracted and counting is not started. As a result, since the suction shaft must be returned to the normal position, that is, the rotating cylinder must be returned to the normal position at the start, a mechanism for keeping the rotating cylinder stationary at the normal position is required.

In addition, even if the rotary cylinder is stopped at a fixed position and the suction surface of the suction shaft is accurately directed toward the banknotes, when counting circulating banknotes, there may be creases, so the banknotes may not be placed on the suction surface. There was a problem in that the vacuum switch did not work and counting did not start even if the vacuum pump was running.

As a solution to this problem, a ``paper sheet counter'' (Japanese Utility Model Publication No. 55-27014) was previously proposed.

``Problems to be Solved by the Invention'' However, in the above-mentioned ``Paper Sheet Counting Machine,'' when a suction failure occurs, a clear switch is operated to cancel the suction operation of the vacuum pump, etc.
It is necessary for a dedicated operator to determine whether the suction is defective, and on the other hand, if the suction action by the vacuum pump is left uninterrupted, there are other disadvantages such as the noise caused by the suction shaft sucking air. has.

The present invention was proposed in view of the above circumstances, and aims to provide a paper sheet counter that prevents malfunctions at the start of counting, generates less noise, and has a simplified structure.

"Means for Solving the Problem" The first invention includes a holder that swings loaded paper sheets to a counting position, and a holder position detection switch that detects that the holder has reached the counting position. , a rotary cylinder that rotates around a shaft having a space communicating with the vacuum pump; and a rotary cylinder that is provided parallel to the axis at a position radially away from the axis of the rotary cylinder and that rotates and is part of the rotation range. a suction shaft which is communicated with the space at the part and which attracts and turns over paper sheets one by one using the vacuum pressure inside the vacuum pump; a proximity switch which detects passage of the suction shaft; and a proximity switch which detects the vacuum pressure. A paper sheet counting machine comprising a vacuum switch that outputs an ON signal when the vacuum switch is ON, and a sheet counting means that counts paper sheets each time a signal is output from the proximity switch while the vacuum switch is ON. , a counting motor drive mechanism that stops the suction shaft at a position where it is out of communication with the space and starts driving the suction shaft in response to an ON signal of the vacuum switch, and swings the holder to a counting position. a holder motor drive mechanism;
and a pump motor drive control section that drives the vacuum pump based on the output signal of the holder position detection switch.

The second invention includes a holder that swings loaded paper sheets to a counting position, a holder position detection switch that detects that the holder has reached the counting position, and a space that communicates with a vacuum pump. a rotary cylinder that rotates around an axis having a shaft, and a rotary cylinder that is provided parallel to the axis at a position radially away from the axis of the rotary cylinder, rotates, and communicates with the space part in a part of the rotation range, and the vacuum A suction shaft that attracts and flips paper sheets one by one using the vacuum pressure inside the pump, a proximity switch that detects the passage of the suction shaft, and a vacuum switch that detects the vacuum pressure and outputs an ON signal. , a paper sheet counting machine comprising a sheet counting means for counting paper sheets each time a signal is output from the proximity switch while the vacuum switch is on, the suction shaft is not connected to the space part. a counting motor drive mechanism that stops the holder at a position where it is in communication and starts driving the suction shaft in response to an ON signal from the vacuum switch; a holder motor drive mechanism that swings the holder to the counting position;
a pump motor drive control unit that drives the vacuum pump according to an output signal of the holder position detection switch; and a pump motor drive control unit that starts an ejecting operation at the same time as the holder starts an operation of swinging the paper sheet to the suction shaft, and starts an ejecting operation in the swinging direction. a regulating member that protrudes in the opposite direction to press the leading edge of the paper sheet, and returns to its original position and releases the paper sheet when the first signal is output from the proximity switch after the rotating cylinder starts rotating; It is equipped with the following.

"Operation" According to the first invention, before counting starts, with the suction shaft stopped at a position where it does not communicate with the space, the holder is swung to the counting position by the holder motor drive mechanism, and the holder is brought into the closed state. Then, a closed position detection signal is output, and the vacuum pump is driven by the pump motor drive control section. Next, when the vacuum switch detects the vacuum pressure inside the suction shaft and outputs an ON signal, the suction shaft begins to rotate while revolving around itself due to the counting motor drive mechanism. Bakyumu switch
When a signal is output from the proximity switch in the ON state, the contact surface of the suction shaft directly faces the surface of the paper sheets, and the paper sheets are picked up and turned over one by one. This makes it possible to reliably operate the vacuum switch and start counting.

According to the second invention, the ejecting operation is started at the same time as the movement of the holder to bring the paper sheet closer to the suction shaft, and the regulating member protrudes in the opposite direction to the swinging direction of the paper sheet, thereby reducing the amount of paper. The tips of the leaves are pressed together. Next, the regulating member returns to its original position by the first signal output from the proximity switch after the suction shaft revolves. Thereby, it is possible to prevent paper sheets from protruding between the suction shafts or the like.

"Example" Hereinafter, with reference to FIGS. 1 and 2, the first embodiment of the present invention will be described.
An example will be explained. 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, when the rotary cylinder 3 supporting the suction shaft 2 is rotated counterclockwise, the suction shaft 2 itself rotates clockwise and attracts the paper sheets S one by one using vacuum pressure and peels them off. Perform counting.

The suction shaft 2 rotates from the chain line A to the chain line B when the rotary cylinder 3 rotates from θ ₁ to θ ₂ in FIG. S can be attracted. In other states, the interior of the suction shaft 2 is sealed from the outside. Further, 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 in FIG.
All suction shafts 2 rotate only from θ ₀ to θ ₁ .
... is in a state of being sealed from the outside.

The rotary cylinder 3 is driven by a counting motor 5 via a belt 4.

On the other hand, the holder 1 is connected by a link 8 to a holder opening/closing cam 7 which is rotationally driven by a holder motor 6.
The holder is swung in this direction to bring the holder into a closed state, or rotated in the opposite direction to bring the holder into an open state. Further, an open position detection switch 9 and a closed position detection switch 10 for detecting the open and close positions of the holder 1 are provided on the outer periphery of the holder opening/closing cam 7.
A start button 11 for starting the counting operation is provided on the top surface.

As shown in FIG. 2, the suction shaft 2 is hollow and opens at a flat contact surface 2a.
The hollow part 2b of the suction shaft 2 is connected to the vacuum pump 12 through the conduit 1.
3, and the vacuum switch 1
4 is provided branching off from the pipe line 13. or,
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 the actuating piece 15 approaches, the suction shaft 2 passes the position θ ₀ in Fig. 1. A proximity switch 16 is installed to detect this. In addition, the counting motor 5, the actuating piece 15,
A proximity switch 16, a counting motor drive control section 21 (described later), etc. constitute a counting motor drive mechanism 30, and a holder motor 6, a holder opening/closing cam 7, a link 8, an open position detection switch 9, a closed position detection switch 10, and the like (described later) constitute a counting motor drive mechanism 30. The holder motor drive control section 18 and the like constitute the holder motor drive mechanism 31.

Next, the control system of each of the above mechanisms will be explained with reference to the time chart in FIG.

"Timing 1" (T ₁ in FIG. 5). Proximity switch 1 is set before the start of counting by the method described later.
The rotary cylinder 3 is stopped so that an "ON" signal can be obtained from 6, that is, the center of the suction shaft 2 is located between θ ₀ and θ ₁ in FIG. 1, and the start button 11 is pressed. Based on this signal, the holder motor drive control section 18
puts the holder motor 6 into operation and swings the holder 1 in the direction of the suction shaft 2.

"Timing 2" (T ₂ ). When the holder 1 is closed, the tip of the paper sheet S comes into contact with the suction shaft 2 or comes close to it, and a signal is output from the closed position detection switch 10 to stop the operation of the holder motor 6. At the same time, the pump motor drive control section 19 puts the pump motor 20 into operation, and the vacuum pump 12 is driven.

"Timing 3" (T ₃ ). As described above, since the inside of the suction shaft 2 is sealed from the outside, the vacuum switch 14 is activated in a short time by driving the vacuum pump 12. In response to this "ON" signal, the counting motor drive control unit 21 operates the counting motor 5, and the suction shaft 2 begins to rotate while revolving.

"Timing 4" (T ₄ ). When the center of the suction shaft 2, which was located in the range of θ ₀ and θ ₁ in FIG. 1, shifts counterclockwise from θ ₁ , the contact surface 2a of the suction shaft 2
3, the first paper sheet S is sucked, and the first falling signal is output which causes the proximity switch 16 to change from "ON" to "OFF". In this first embodiment, the first falling signal is not used.

"Timing 5" (T ₅ ). Next, the contact surface 2a
passes through a position directly facing the surface of the paper sheet S (rotary cylinder fixed position).

"Timing 6" (T ₆ ). Further, by rotating the suction shaft 2 counterclockwise, the first sheet S
Turn over the suction shaft 2 shown by the chain line B in FIG. 1 and the next suction shaft 2 shown by the chain line O in FIG. At this time, the proximity switch 16 is turned "ON" again and the suction action is stopped. When the suction shaft 2, which has finished its suction action, revolves and rotates to the position shown by the chain line C in FIG. 1, the next suction shaft 2 reaches the position shown by the chain line A from the position shown by the chain line O.

"Timing 7" (T ₇ ). A falling signal is output when the proximity switch 16 changes from "ON" to "OFF", and this signal is transmitted to the sheet number counting section 23 via the AND gate 22 to count the first sheet. Further, the center of the next suction shaft 2 is shifted counterclockwise from θ ₁ in FIG. 1, and the second sheet is suctioned, and the process is repeated.

“Timing n” (T _o ). Furthermore, when all the paper sheets S on the holder 1 have been turned over and the counting is completed, the contact surface 2a of the suction shaft 2 is not blocked by the paper sheets S and is opened, so that the degree of vacuum in the conduit 13 is increased. The temperature decreases and the vacuum switch 14 turns "OFF".
In response to this signal, the pump motor drive control section 19 stops the operation of the pump motor 20, and the counting motor drive control section 21 switches the operation of the counting motor 5 to a low speed operation that can immediately stop the operation.

"Timing n+1 to n+3" (T _o+1 to _{T o+3} ).
In this way, wait until the rotational speed of the rotary cylinder 3 by the counting motor 5 becomes constant and stable.

"Timing n+4" (T _o+4 ). When the stable state is reached, a rising signal that changes the proximity switch 16 from "OFF" to "ON" is transmitted to the counting motor drive control unit 21 to stop the counting motor 5, and the center of the suction shaft 2 is adjusted to the position shown in FIG. It should be located between θ ₀ and θ ₁ . After this, the proximity switch 16 is maintained in the "ON" state, and by detecting the state of the proximity switch 16, it is clear whether the inside of the suction shaft 2 is stopped in a position where it is sealed from the outside. becomes.

Next, FIGS. 3 and 4 show a second embodiment of the present invention, and correspond to FIGS. 1 and 2, respectively. In the second embodiment, the holder 1 moves the paper sheets S to the suction shaft 2 near the holder 1 and the rotary tube 3.
A regulating member 17 is provided so that the leading edge of the paper sheet S comes into contact with and is pressed when the paper sheet S is brought close to the paper sheet S. The regulating member 17 is a separating device or the like that presses down the remaining paper sheets S at the moment when the desired number of paper sheets S is counted (referred to as batch mode). is used. That is, the separate plate 17b, which is projected by the driving force of the solenoid 17a in the direction opposite to the direction in which the paper sheet S approaches the suction shaft 2 as shown by the chain line in FIG. At the same time, the separate 17b is returned to the solid line position in FIG. 3 by the spring 17c when the solenoid 17a is in a non-energized state.

The operation of the regulating member 17 is performed between timing 1 and timing 4 according to the time chart shown in FIG. That is, in response to a signal from the start button 11, the holder motor drive control unit 18 puts the holder motor 6 into operation to close the holder 1, and the separator drive control unit 24 excites the solenoid 17a to move the separator 17b to the position indicated by the chain line in FIG. Wait until it sticks out. Then, when holder 1 closes,
Since the side of the leading edge of the paper sheet S is pressed against the separator 17b as shown by the chain line in FIG.・Nothing stands out between the two. Then, the pump motor 20 is operated (timing 2), the vacuum switch 14 is operated and the counting motor 5 is operated (timing 3), and the proximity switch 16 is turned from "ON" to "OFF" (timing 4). ), the suction shaft 2 rotates to the position shown by the dashed line A in FIG. 1, so the first falling signal from the proximity switch 16 releases the excitation of the solenoid 17a and returns the separator 17b to the position shown by the solid line in FIG. 3. Hereinafter, the same actions as in the first embodiment are performed.

Further, the regulating member 17 can be used to take out a desired number of paper sheets S. In this case, the output signal of the sheet number counting section 23 is compared with the setting signal, and a count coincidence signal is transmitted to the separator drive control section 24, and the regulating member 17 is operated to suppress the remaining paper sheets S. be. In this case, an inverted signal is output from the inverter 25 to the AND gate 22 to lock the sheet number counting section 23.

On the other hand, in Fig. 4, the part marked * is the paper sheet S.
When taking out a desired number of sheets (in batch mode), an open signal of the holder 1 is transmitted to the separator drive control section 24, and the regulating member 17 is returned to the position shown by the solid line in FIG. 3 and released.

In each embodiment, the counting motor 5 is equipped with a mechanical motor with a large stopping torque for the purpose of increasing the braking effect when stopping the operation of the counting motor 5 and for the purpose of preventing the rotating cylinder 3 from being displaced in the stopped state. It is desirable to attach a brake to lock the rotary tube 3 so that the stopping position of the suction shaft 2 does not shift. Also, when the suction pipe 13 closes the suction shaft 2
The timing to set the position such that , is not limited to the end of counting at timing n+4 shown in the time chart, but can be done at any time until the start signal is output at the latest, by operating the counting motor 5 at a low speed, etc. The center of the suction shaft 2 may be located between θ ₀ and θ ₁ in FIG.

"Effects of the Invention" As explained above, according to the present invention, the suction shaft is repeatedly switched between a state in which it is disconnected from the space and a state in which it is in communication with the space while it revolves, and a state in which it is in communication with the space in which paper sheets can be sucked. After stopping the suction shafts at a position where all of the suction shafts are out of communication with the space, close the holder and operate the vacuum pump to ensure that the vacuum switch operates in a short time. Since the counting is configured to start, the counting operation can be started regardless of the quality of the paper sheets, so noise generation can be suppressed as much as possible. There is no need to precisely point the rotary cylinder toward the paper sheets in the holder and there is flexibility in the position where the rotary cylinder is stopped, so the structure of the machine can be simplified and adjustments can be made easily. be able to.

Furthermore, since the paper sheets are held down by the regulating member, it is possible to reliably start counting loose paper sheets.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the configuration of the main part of the counting mechanism according to the first embodiment of the present invention, FIG. 2 is an explanatory diagram of the relationship between the main part of the counting mechanism and the control circuit according to the first embodiment, and FIG.
The figure is a plan view showing the configuration of the main part of the counting mechanism according to the second embodiment of the present invention, FIG. 4 is an explanatory diagram of the relationship between the main part of the counting mechanism and the control circuit according to the second embodiment, and FIG. This is a time chart of the control system. S... Paper sheets, 1... Holder, 2... Suction shaft,
3... Rotating tube, 5... Counting motor, 6... Holder motor, 9... Open position detection switch, 10... Closed position detection switch (holder position detection switch),
11...Start button, 12...Vacuum pump, 13
...Pipeline, 14...Bakuyume switch, 16...
...Proximity switch, 17...Regulation member, 17a...
Solenoid, 17b... Separator, 17c...
Spring, 18...Holder motor drive control section,
19... Pump motor drive control section, 20... Pump motor, 21... Counting motor drive control section, 23
. . . sheet number counting section, 24 . . . separator drive control section, 30 . . . counting motor drive mechanism, 31 . . . holder motor drive mechanism.

Claims (1)

[Claims] 1. A holder that swings loaded paper sheets to a counting position, a holder position detection switch that detects when the holder reaches the counting position, and a space communicating with a vacuum pump. a rotary cylinder that rotates around an axis having a rotary cylinder; A suction shaft that attracts and flips paper sheets one by one using the vacuum pressure inside the vacuum pump, a proximity switch that detects the passage of the suction shaft, and a proximity switch that detects the vacuum pressure.
A paper sheet counting machine comprising a vacuum switch that outputs an ON signal, and a sheet counting means that counts paper sheets each time a signal is output from the proximity switch while the vacuum switch is ON,
The suction shaft is stopped at a position where it is out of communication with the space, and the vacuum switch is turned off.
A counting motor drive mechanism that starts driving the suction shaft based on an ON signal, a holder motor drive mechanism that swings the holder to the counting position, and a pump motor drive that drives the vacuum pump based on the output signal of the holder position detection switch. A paper sheet counting machine comprising a control section. 2. The paper sheet counter according to claim 1, wherein the proximity switch detects whether or not the suction shaft is stopped at a position where the inside thereof is sealed from the outside. 3. The paper sheet counting machine according to claim 1, wherein the suction shaft is caused to revolve at a low speed, and the suction shaft is stopped at a closed position by a signal from the proximity switch. 4. The paper sheet counting machine according to claim 1, wherein the suction shaft is driven by a counting motor with a large stopping torque. 5. A holder that swings loaded paper sheets to a counting position, a holder position detection switch that detects when the holder has reached the counting position, and a shaft that has a space communicating with a vacuum pump. A rotary cylinder that rotates, and a vacuum pump that is provided parallel to the axis at a position radially away from the axis of the rotary cylinder, rotates, and communicates with the space part in a part of the rotation range, and is connected to the vacuum pump. A suction shaft that picks up paper sheets one by one and turns them over, a proximity switch that detects the passage of the suction shaft, and a proximity switch that detects the vacuum pressure.
A paper sheet counting machine comprising a vacuum switch that outputs an ON signal, and a sheet counting means that counts paper sheets each time a signal is output from the proximity switch while the vacuum switch is ON,
The suction shaft is stopped at a position where it is out of communication with the space, and the vacuum switch is turned off.
A counting motor drive mechanism that starts driving the suction shaft based on an ON signal, a holder motor drive mechanism that swings the holder to the counting position, and a pump motor drive that drives the vacuum pump based on the output signal of the holder position detection switch. a control unit and the holder start a protruding operation at the same time as the start of the operation of swinging the paper sheet to the suction shaft, and protrude in a direction opposite to the swinging direction to press the leading end of the paper sheet;
and a regulating member that returns to its original position and releases the paper sheets when the first signal is output from the proximity switch after the rotary tube starts rotating. 6. The paper sheet counting machine according to claim 2, wherein the proximity switch detects whether or not the suction shaft is stopped at a position where the inside thereof is sealed from the outside. 7. The paper sheet counting machine according to claim 2, wherein the suction shaft is caused to revolve at a low speed, and the suction shaft is stopped at a closed position by a signal from the proximity switch. 8. The paper sheet counting machine according to claim 2, wherein the suction shaft is driven by a counting motor with a large stopping torque. 9. Claim 2, wherein the regulating member is constituted by a separator that holds down the remaining paper sheets when the desired number of paper sheets has been counted.
Paper sheet counting machine as described in section.