JPS634236B2 - - 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, when the banknote holder is closed, if the suction surface of the suction shaft and the banknote are not in close contact, the inside of the suction shaft will not be able to communicate with the outside air and reach a constant vacuum pressure, and the banknote will not be suctioned. , counting is not started either. 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.

For example, the 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 the locking groove is provided to rotate the rotary tube. The machine was stopped at a fixed position while being reversed. This complicates the mechanism and increases manufacturing costs, and when the reversing stopper engages with the locking groove of the rotary cylinder to stop it, a large impact sound is likely to be generated, resulting in noise. Furthermore,
If the reversing stopper partially engages with the locking groove of the rotating cylinder and stopping the rotating cylinder, or if the locking groove rebounds due to the impact of hitting the reversing stopper, the rotating cylinder will not be able to stay in the fixed position. If the counting motor continues to drive the rotary tube because the counting motor does not stop, and the counting motor continues to drive the rotary tube because the switch detects the fixed position based on the operating state of the reversing stopper and stops the counting motor from reversing. There is a risk of a burnout accident occurring.

In order to eliminate the drawbacks of the above-mentioned prior art, the applicant provided a solenoid valve in the conduit from the vacuum pump in Japanese Patent Application No. 101921/1983 entitled "Paper Sheet Counting Machine", and the solenoid valve was activated by the first signal from the proximity switch. We have proposed a technology that allows paper sheets to be correctly picked up, turned over, and counted without having to stop the rotary cylinder in a fixed position by configuring the pipe to be open. I got results.

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

If the paper sheets to be counted are circulation banknotes with folds, if the machine is not loaded correctly, the banknotes (paper sheets) S will be placed in the holder 1 as shown in Figure 1.
When the bill S is placed on the paper and set at the counting position shown by the chain line, there is a possibility that the leading edge of the bill S will vary and the first 1 or 2 bills with folds may be stuck between the suction shafts 2 and 2. . Therefore, when the rotary tube 3 supporting the suction shaft 2 is rotated counterclockwise in the extreme state shown in FIG. 1, one or two bills S that have fallen between the suction shafts 2 are counted. It is conceivable that the data may be sent without being read, causing erroneous counting.

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 a paper sheet counter equipped with a sheet counting means for counting paper sheets each time a sheet is output, when a start signal is output that causes the suction shaft to revolve and starts counting paper sheets,
At the same time as the holder starts to swing to bring the paper sheet closer to the suction shaft, the protrusion operation starts, and the protrusion operation is performed in the opposite direction to the approaching direction to press the leading edge of the paper sheet, while after the suction shaft starts to revolve. a regulating member that returns to its original position and releases paper sheets when the first signal is output from the proximity switch; The apparatus is equipped with a counting motor drive mechanism that revolves the suction shaft, and a solenoid valve that opens a conduit from the vacuum pump to the suction shaft and the vacuum switch in response to the first signal from the proximity switch. be. Further, the regulating member may be constituted by a separator that holds down remaining paper sheets when a desired number of paper sheets has been counted.

"Operation" According to the present invention, when a start signal to start counting paper sheets is output, the paper sheets are brought closer to the suction shaft by the swinging of the holder, and the swinging operation of the holder is started. At the same time, the regulating member protrudes in a direction opposite to the direction in which the paper sheets approach, thereby pressing against the leading edge of the paper sheets. Next, after the suction shaft has revolved by the counting motor drive control section, the first signal output from the proximity switch causes the regulating member to return to its original position and the solenoid valve to be driven, thereby shutting down the vacuum pump, suction shaft, and vacuum switch. A pipe line between the two is connected, and paper sheets are attracted to the suction shaft and peeled off. This makes it possible to reliably attract and peel off paper sheets that have creases at the tip.
It becomes possible to perform accurate counting.

"Embodiments" Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 shows the main part of the counting mechanism, and FIG. 3 shows the relationship between the counting mechanism and the control circuit.
First, the counting mechanism will be explained.

When the rotary cylinder 3 is rotationally driven in the direction of arrow A in FIG. 2 by the counting motor 5 via the belt 4, each suction shaft 2 is simultaneously driven to rotate 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 rotates in the direction of arrow C by the rotation of the holder opening/closing cam 7 to bring the holder into the closed state, or in the direction of the arrow opposite to this. The holder is rotated in the D direction to open the holder. Furthermore, an open position detection switch 9 and a closed position detection switch 10 are provided on the outer periphery of the holder opening/closing cam 7 to detect the open/close position of the holder 1. or,
A start button 11 is provided on the top surface of the holder 1 to start the counting operation.

As shown in FIG. 3, 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 from the conduit 13, and furthermore, the conduit 1
3, solenoid valve 15 near vacuum pump 12
is provided. Further, 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 17 is arranged to detect when the actuating piece 16 approaches. .

Also, near the holder 1 and the rotary cylinder 3, when the paper sheet S is brought close to the suction shaft 2 by the holder 1,
A regulating member 18 is provided to allow the leading edge of the paper sheet S to come into contact and be pressed. Regulation member 1
8 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). be done. That is, due to the driving force of the solenoid 19, the separator 20 is projected 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.
The separator 20 is provided above the suction shaft 2 with a slight spacing therebetween, and is returned to the solid line position in FIG. 2 by a spring 21 when the solenoid 19 is in a non-energized state. Note that the counting motor 5 and a counting motor drive control section 27, which will be described later, constitute a counting motor drive mechanism 34.

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

"Timing 1" (T ₁ in FIG. 4). First, when the start button 11 is pressed, the holder motor 6 is operated by the holder motor drive control section 22 and the holder 1 starts rotating in the direction of arrow C in FIG. The solenoid 19 of is energized,
The separator 20 is made to protrude to the position indicated by the chain line in FIG. 2 and is on standby.

“Timing 2” (T ₂ ). Next, when the holder 1 is closed, the side of the leading edge of the paper sheet S is pressed against the separator 20 as shown by the chain line in FIG.
Even if the paper sheets S are separated as shown by the solid line, they are in a compressed state. Further, when the holder 1 closes, a signal is output from the closed position detection switch 10, and the pump motor drive control section 24 drives the pump motor 25 to operate the vacuum pump 12.
The action of driving is performed.

"Timing 3" (T ₃ ). Further, the signal from the closed position detection switch 10 is transmitted to the counting motor drive control section 27 with a time difference via the delay circuit 26.
operates the counting motor 5 and rotates the rotary cylinder 3 in the forward direction.

"Timing 4" (T ₄ ). As the rotary cylinder 3 rotates forward, the proximity switch 17 turns "ON".
At the first falling signal that becomes "OFF", the regulating member 1 is
The solenoid 19 of No. 8 is de-energized, the separator 20 opens the sheet S due to the biasing force of the spring 21, and the solenoid valve 15 is opened by the solenoid valve drive control section 28. Through these operations, the tip of the paper sheet S is pressed against the suction shaft 2, but when the proximity switch 17 changes from "ON" to "OFF", the contact surface 2a of the suction shaft 2 is pressed against the paper sheet S. Since the paper sheets S face each other directly, the phenomenon that the leading edge of the paper sheet S comes apart does not occur. On the other hand, a conduit 13 between the vacuum pump 12 and the suction shaft 2 that has been operated in advance
By instantaneously communicating with the solenoid valve 15, the first sheet S is placed on the suction shaft 2.
is absorbed and is about to be peeled off.

"Timing 5" (T ₅ ). Also, counting motor 5
Due to the positive rotation of the rotary cylinder 3, the contact surface 2a of the suction shaft 2 reliably faces the first sheet S and continues the suction and peeling action.

"Timing 6" (T ₆ ). At timing 4 or timing 5, the contact surface 2a is paper sheet S
, the vacuum pressure in the pipe line 13 rises in a very short time, and the vacuum switch 14 turns "ON".

"Timing 7" (T ₇ ). 1 by suction shaft 2
After the first sheet S is turned over, when the proximity switch 17 outputs a falling signal that changes from “ON” to “OFF”, the sheet number counting unit 30 counts the number of sheets through the AND gate 29. Count the class S.

"Timing 8" ( _T8 ). Next, the second paper sheet S is attracted and turned over, and the above counting is repeated.

Furthermore, when all the paper sheets 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 opens, so that the degree of vacuum in the conduit 13 decreases. , the vacuum switch 14 is turned "OFF". In response to this signal, the pump motor drive control section 24 stops the operation of the pump motor 25, the counting motor drive control section 27 stops the operation of the coefficient motor 5, and the solenoid valve drive control section 28 releases the solenoid valve 15. pipe line 13
Each operation is performed to block the area. Further, a holder open signal is issued, the holder motor 6 is started, and the holder 1 is opened to the solid line position in the direction of arrow D in FIG.

Further, the regulating member 18 can be used in a batch mode for taking out a desired number of paper sheets S.
That is, the output signal of the sheet number counting section 30 is transferred to the sheet number comparing section 3.
When the batch mode is set by the batch mode switch 33, a signal indicating that the desired number of sheets has been reached is transmitted to the separator drive control section 23.
The control member 18 is actuated to suppress the remaining paper sheets S. In this case,
The AND gate 29 is adapted to lock the sheet number counting section 30.

On the other hand, in the case of the batch mode, the part marked * in Fig. 3 is such that the open signal of the holder 1 is transmitted to the separator drive control section 23 to return the regulating member 18 to the position indicated by the solid line in Fig. 2 and release it. .

Note that between timings 1 and 3, the counting motor 5 is turned on once to ensure that the bulges and bends at the lower part of the tip of the paper sheet S (the part that contacts the suction shaft) are attracted and peeled off. After reversing the
It is also effective to rotate the counting motor 5 in the forward direction.

"Effects of the Invention" As explained above, according to the present invention, the protruding operation of the regulating member is started simultaneously with the start of the operation of swinging the holder to bring paper sheets close to the counting position,
After the tip of the paper sheet contacts the regulating member, the suction shaft is revolved, and after the suction shaft has revolved, the regulating member is returned to its original position to release the paper sheet, and at the same time, the solenoid valve is operated. Since the vacuum pump and the suction shaft are communicated with each other to perform the suction action of the suction shaft, the following effects can be achieved.

It is possible to reliably attract and turn over paper sheets, such as circulating banknotes, which tend to spread due to creases at the tips, so that accurate counting can be performed.

This eliminates the need for a mechanism for keeping the rotating cylinder stationary at a fixed position, that is, a complicated mechanism such as a reversing mechanism for the counting motor, a locking groove for the rotating cylinder, and a reversing stopper, making it easier to manufacture the device. , manufacturing costs can be reduced.

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 head, Figure 2
The figure is a plan view of the main part of the counting mechanism according to one embodiment of the present invention, FIG. 3 is an explanatory diagram of the relationship between the main part of the counting mechanism and the control circuit according to the present embodiment, and FIG. 4 is a time diagram of the control system according to the present embodiment. It's a chat. S...Banknotes (paper sheets), 1...Holder, 2...
Suction shaft, 3... Rotating cylinder, 5... Counting motor, 6...
...Holder motor, 9...Open position detection switch, 1
0...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 , 18...Restriction member, 19...Solenoid, 20...Separator, 22...Holder motor drive control section, 23...Separator drive control section, 2
4... Pump motor drive control section, 25... Pump motor, 26... Delay circuit, 27... Counting motor drive control section, 28... Solenoid valve drive control section, 30... Number of sheets counting section, 31... Number of sheets comparison section,
32...Number of sheets setting unit, 33...Batch mode switch, 34...Counting motor drive mechanism.

Claims (1)

[Claims] A holder that swings one loaded paper sheet to a counting position, a holder position detection switch that detects when the holder has reached the counting position, and a rotating cylinder that rotates around an axis. The rotary cylinder is provided at a position radially away from the axis and parallel to the axis, and rotates while revolving around the axis to attract paper sheets one by one using internal vacuum pressure. A suction shaft that flips over, a vacuum switch that detects the vacuum pressure, a proximity switch that detects passage of the suction shaft, and a paper sheet that rotates each time a signal is output from the proximity switch when the vacuum switch is ON. In a paper sheet counter equipped with a sheet counting means for counting paper sheets, when a start signal that causes the suction shaft to revolve and starts counting paper sheets is output, the paper sheets are brought close to the suction shaft. At the same time as the holder starts to swing, the ejecting operation starts in the opposite direction to the approaching direction of the paper sheet and presses the leading edge of the paper sheet. a regulating member that returns to its original position and releases paper sheets when a signal is output; and a regulating member that rotates the suction shaft after the regulating member has protruded and the holder has swung to a counting position. A sheet counting machine comprising a counting motor drive mechanism and a solenoid valve that opens a conduit from a vacuum pump to the suction shaft and vacuum switch in response to the first signal from the proximity switch. 2. The paper sheet counting machine according to claim 1, wherein the regulating member is constituted by a separator that holds down remaining paper sheets when a desired number of paper sheets has been counted.