JPS634235B2 - - 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 counter that uses the vacuum pressure inside a suction shaft that rotates while revolving to attract and turn over bills one by one, and counts the paper sheets using the output signal of a proximity switch that detects the passage of the suction shaft. machine is 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, a vacuum switch detects this, and based on this detection signal, a rotary cylinder equipped with the suction shaft is The banknotes were rotated and the bills were turned over one by one. Therefore, if the suction surface of the suction shaft and the banknotes are not in close contact when the banknote holder is closed, the inside of the suction shaft will not be able to reach the outside air and reach a certain vacuum pressure, and the banknotes will not be suctioned. Counting will not start either. Therefore, at the starting point, the suction shaft must be returned to the normal position, that is, the rotating cylinder must be returned to the normal position, and a mechanism for stopping the rotating cylinder at the normal position is required.

For example, a counting motor that rotates the rotary tube can be reversed, a locking groove corresponding to a fixed position is provided on the outer circumferential surface of the rotary tube, and a reversing stopper that engages with this locking groove is provided, so that the rotary tube can be rotated in reverse. The robot was stopped at a fixed position while being reversed. This complicates the mechanism, increases manufacturing costs, and
When the reversing stopper engages with the locking groove of the rotary cylinder and stops the rotary cylinder, a large impact sound is likely to be generated and noise, and furthermore, the reversing stopper engages with the locking groove of the rotary cylinder only half-heartedly. If the rotating cylinder is stopped, or if the locking groove bounces due to the impact of hitting the reversing stopper, the rotating cylinder will not stop at the fixed position, and the fixed position will be detected based on the operating state of the reversing stopper and counting will be performed. If a signal to detect the fixed position cannot be obtained from the switch that stops the motor from reversing, and the counting motor continues to drive the rotating cylinder, there is a risk of a burnout accident.

In order to eliminate these drawbacks of the prior art, the applicant provided a solenoid valve in the pipeline from the vacuum pump in Japanese Patent Application No. 101921/1983 entitled "Paper Sheet Counting Machine", and the first signal from the proximity switch is used to trigger this valve. By configuring the solenoid valve so that the pipeline is open, the rotary cylinder does not need to be stopped at a fixed position.
We achieved results by proposing a technology that can correctly attract paper sheets, turn them over, and start counting.

"Problems to be Solved by the Invention" However, the above-mentioned "paper sheet counting machine" had the following problems.

When the paper sheets to be counted are circulating banknotes with folds, if the banknotes are not loaded into the banknote holder with the banknotes arranged in an orderly manner, the banknotes (paper sheets) S will be When placed on the holder 1 and set at the counting position shown by the chain line, there is a risk that the leading edge of the banknote S may vary and the first or two crooked banknotes may end up between the suction shafts 2. There is. Therefore, the suction shaft 2 is in the state shown in FIG.
If the rotary cylinder 3 supporting the is rotated counterclockwise, one or two bills S that have fallen between the suction shafts 2 may be sent without being counted, causing erroneous counting. Ta.

The present invention was proposed in view of the above-mentioned circumstances, and an object of the present invention is to provide a paper sheet counter that can accurately count paper sheets such as circulating banknotes with a folded edge at the leading end using a simple mechanism.

"Means for Solving the Problems" The present 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,
A rotating cylinder that rotates around an axis, and a rotating cylinder that is provided parallel to the axis at a position radially away from the axis, rotates while revolving around the axis, and generates paper sheets by internal vacuum pressure. a vacuum switch that detects the vacuum pressure, a proximity switch that detects passage of the vacuum shaft, and a signal from the proximity switch when the vacuum switch is on. In the paper sheet counting machine, the suction shaft is rotated in the opposite direction of revolution based on the output signal of the holder position detection switch, and a counting motor that revolves the suction shaft in the forward direction in response to a signal output from the proximity switch after the suction shaft has rotated in the reverse direction; and a pipe leading from the vacuum pump to the suction shaft and the vacuum switch in response to the output signal of the proximity switch. It is equipped with a solenoid valve that opens the passage.

"Operation" According to the present invention, after the holder reaches the paper sheet counting position in response to a start signal that starts counting paper sheets, when a signal that reversely rotates the counting motor is output, the suction shaft stops rotating. It rotates in the opposite direction, and if there is a bill that has fallen between the adjacent suction shafts, it is released and the folds in the paper sheet are corrected. Next, when a signal is output from the proximity switch after the counter rotation signal for the counting motor, a signal is output in synchronization with this signal to stop the counting motor and then to rotate it forward. At this time, the suction surface of the suction shaft has reached the counting position where it faces the surface of the paper sheets.
At the same time, the solenoid valve is activated to open the pipeline from the vacuum pump to the suction shaft and the vacuum switch, so that the suction shaft performs the suction action on paper sheets, and the suction shaft revolves in the positive direction. Paper sheets are counted. Thereby, even paper sheets with folds at the leading edge can be reliably attracted and turned over, and accurate counting can be performed.

"Embodiments" The present invention will be described below based on embodiments shown in the drawings.

FIG. 2 shows the main parts of the counting mechanism and its control circuit. First, to explain the counting mechanism, the rotary cylinder 3 is driven to rotate in the direction of arrow A in FIG. 1 by the counting motor 5 via the belt 4. When
At the same time, each suction shaft 2 is rotationally driven in the direction of arrow B. Further, 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, and the rotation of the holder opening/closing cam 7 moves the arrow C
The holder is rotated in the direction of arrow D to bring the holder into the closed state, or rotated in the opposite direction of arrow D to bring the holder into the open state. Further, on the outer periphery of the holder opening/closing cam 7, an open position detection switch 9 for detecting the opening/closing position of the holder 1,
and a closed position detection switch 10.
Furthermore, a start button 11 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 suction 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 14
is provided branching from the pipe line 13, and the pipe line 13
A solenoid valve 15 is provided near the vacuum pump 12. Moreover, an actuating piece 16 (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 a proximity switch 18 is arranged to detect when the actuating piece 16 approaches.

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

"Timing 1" (T1 in FIG. 3) First, when the start button 11 is pressed, the holder motor drive control section 22 drives the holder motor 6 to close, and the holder 1 is driven in the direction of arrow C in FIG. The position shown by the chain line in FIG. 1 is reached.

"Timing 2" (T2) The "ON" signal is output from the closed position detection switch 10, the holder motor 6 is brought to a stopped state, and the "ON" signal of the closed position detection switch 10 causes the pump motor drive control unit to 23 operates the vacuum pump 12 via a pump motor 24.
At this time, the solenoid valve 15 is in a state where the pipe line 13 is closed.

“Timing 3” (T3) Next, the counting motor drive control unit 25 drives the counting motor in reverse rotation, and the belt 4 rotates the rotating cylinder 3.
Rotate in the direction opposite to arrow A in Figure 1. That is, as the suction shaft 2 reversely revolves in the clockwise direction in FIG.
As a result, if there is a bill that has gotten between the suction shafts 2, it is released, and the crookedness of the bill S is corrected.

"Timing 4" (T4) Due to the reverse rotation of the rotary cylinder 3, the actuating piece 16 rotates clockwise, and after the reverse rotation starts, the proximity switch 17 is activated.
turns "ON" and the first rising signal is output, the reverse drive of the counting motor 5 is stopped by that signal, and the solenoid valve 15 is driven by the solenoid valve drive control section 26 to close the pipeline. Open 13. At this time, the suction surface 2a of the suction shaft 2 substantially faces the surface of the first banknote S, and performs a suction action by opening the conduit 13.
Further, the counting motor drive control section 25 drives the counting motor 5 in the forward direction based on the rising signal of the proximity sensor 17.

"Timing 5" (T5) By driving the counting motor 5 in the forward direction, the suction surface 2a of the suction shaft 2 reliably faces the first bill S (the rotary tube 3 is in the fixed position) and suctions it. do.

"Timing 6" (T6) On the other hand, at the moment when the proximity switch 17 is turned "ON" at timing 4, the pipe line 13 between the hollow part 2b of the suction shaft 2 and the vacuum pump 12 is communicated by the solenoid valve 15. Hollow part 2b of suction shaft 2
does not become a vacuum pressure immediately, but becomes a vacuum pressure after the suction surface 2a attracts the first bill S. At this time, the vacuum switch 14 operates and an "ON" signal is output, and the AND gate 27 is activated. It is transmitted to one input terminal.

“Timing 7” (T7) Next, the suction surface 2a of the suction shaft 2 revolves while flipping up the banknotes S, the proximity switch 17 is turned “ON” again, and a signal is sent from the AND gate 27 to the number of banknotes counting unit 28. .

"Timing 8" (T8) The number counting section 28 counts the first bill S in response to a falling signal that turns the proximity switch 17 "OFF."

“Timing 9” (T9) After that, the second banknote S is attracted and the rotary cylinder 3
passes through a fixed position and is flipped over, and the counting is repeated.

When all the banknotes on the holder 1 have been turned over and counting has been completed, the suction surface 2a of the suction shaft 2 is not blocked by the banknotes and is opened, so the degree of vacuum in the conduit 13 decreases and the vacuum switch 14 turns OFF. ”.
As a result, the counting motor 5 and the pump motor 24 are stopped, and a holder open signal is outputted to start the holder motor 6, opening the holder 1 in the direction of arrow D in FIG.

On the other hand, what is indicated by the reference numeral 29 in FIG.
This is a reversing counter added to further increase the reliability of banknote counting operations. In the time chart shown in FIG. 3, at timing 4, when the first rising signal that turns the proximity switch 17 "ON" after the start of reverse rotation is output, the reverse drive of the counting motor 5 is immediately stopped. However, when the "ON" signal of the proximity switch 17 is applied, for example, the rotary tube 3 is rotated in the reverse direction until several counts are made to ensure that the crookedness of the banknote S is corrected, and then the reverse drive of the counting motor 5 is stopped and the solenoid is activated. This opens the valve 15 and drives the counting motor 5 in the forward direction.

"Effects of the Invention" As explained above, according to the present invention, the suction shaft is rotated in the opposite direction of revolution based on the output signal of the holder position detection switch, and after the suction shaft is rotated in the opposite direction, the output signal is output from the proximity switch. The apparatus is configured to include a counting motor that revolves the suction shaft in the positive direction in response to a signal, and a solenoid valve that opens a conduit from the vacuum pump to the suction shaft and vacuum switch in response to the output signal of the proximity switch. Therefore, the following effects can be achieved.

It is possible to reliably attract and turn over paper sheets such as circulating banknotes with creases at the tip without having to stop the rotating cylinder equipped with a suction shaft in a fixed position, allowing for accurate counting. Can be done.

This eliminates the need for a mechanism for keeping the rotary cylinder stationary in a fixed position, that is, a complicated mechanism such as a locking groove for the rotary cylinder, a reversal stopper, etc., making it easier to manufacture the device and reducing manufacturing costs. Can be done.

It is possible to prevent the possibility of accidents such as generation of impact noise when the rotating cylinder reverses, or burnout of the motor due to improper stationary position.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the relationship between paper sheets and the suction shaft, Figure 2
The figure is an explanatory diagram of the relationship between the main parts of the counting mechanism and the control circuit according to an embodiment of the present invention, and FIG. 3 is a time chart of the control system in FIG. 2. S...Banknotes (paper sheets), 2...Suction shaft, 3...
Rotating cylinder, 5... Counting motor, 10... Closed position detection switch (holder position detection switch), 11...
Start button, 12...Vacuum pump, 13...Pipe line, 14...Vacuum switch, 15...Solenoid valve, 17...Proximity switch, 22...
Holder motor drive control section, 25... Counting motor drive control section, 26... Solenoid valve drive control section, 27... AND gate, 28... Number counting section, 29... Reverse rotation counter.

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 has reached the counting position, a rotating cylinder that rotates around an axis, and a rotating cylinder that rotates around an axis. a suction shaft that is provided parallel to the shaft at a position radially away from the shaft, rotates around the shaft, and attracts and turns paper sheets one by one using internal vacuum pressure; A vacuum switch that detects vacuum pressure, a proximity switch that detects passage of the suction shaft, and a sheet counter that counts paper sheets each time a signal is output from the proximity switch while the vacuum switch is on. A paper sheet counting machine comprising: a means for rotating the suction shaft in the opposite direction of revolution based on the output signal of the holder position detection switch; and a signal output from the proximity switch after the reverse rotation of the suction shaft. a counting motor that causes the suction shaft to revolve in the positive direction; and a solenoid valve that opens a conduit from the vacuum pump to the suction shaft and the vacuum switch in response to the output signal of the proximity switch. Leaf counting machine.