JPS634234B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper sheet counter that counts the number of paper sheets such as banknotes.

Vacuum pressure is generated in the suction shaft that rotates while revolving around the sun, attracting bills one by one and turning them over.
There is a known banknote counting machine that counts the number of bills using a proximity switch that detects the passage of this suction shaft, but in this type of conventional banknote counting machine, the banknotes are in close contact with the suction shaft, and the inside of the suction shaft is under a constant vacuum pressure. When the banknote reached this point, the vacuum switch detected this, and in response to this detection signal, a rotary tube equipped with a suction shaft was rotated to flip up the banknotes one by one. Therefore,
If the suction surface of the suction shaft and the banknotes are not in close contact when the bill holder is closed, the circular portion 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. Therefore, at the start time, 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 keeping the rotating cylinder stationary at the normal position is therefore required. For example, a counting motor that rotates the rotary tube can be made to rotate in reverse, a locking groove corresponding to a fixed position is provided on the outer circumferential surface of the rotary tube, and a reversal stopper that engages with this locking groove is provided to rotate the rotary tube. The robot was rotated in reverse and stopped at a fixed position. In this way, a complicated mechanism is required, and manufacturing is complicated and costs are high. In addition, the impact sound when the reverse rotation stopper engaged with the locking groove of the rotary cylinder and stopped it was loud and harsh. Furthermore, although the reversing stopper partially engaged with the locking groove of the rotating cylinder and temporarily stopping the rotating cylinder, the fixed position detection switch, which detects that the rotating cylinder is in the normal position based on the position of the reversing stopper, If it did not work, accidents would occur, such as the counting motor that drives the rotary tube continuing to rotate and burning out.

This invention was proposed in order to solve the above-mentioned conventional drawbacks, and is configured such that a solenoid valve is provided in the pipeline from the vacuum pump, and the pipeline of this solenoid valve is opened by the first signal from the proximity switch. By doing so, you can correctly attract and turn paper sheets without having to stop the rotating tube in a fixed position.
The object of the present invention is to obtain a paper sheet counting device that can start counting.

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 is a plan view showing the main parts of the banknote counting mechanism.
A suction shaft 2 is arranged on the upper surface of the rotary cylinder 1. This rotary cylinder 1 is rotationally driven in the direction of arrow A in the figure by a counting motor 4 via a belt 3, and at the same time each suction shaft 2 is rotationally driven in the direction of arrow B.

A banknote holder 6 (hereinafter abbreviated as holder 6) that can rotate around a shaft 5 is provided on the side of the rotary cylinder 1. This holder 6 has a holder motor 7
The holder opening/closing cam 8 is connected by a link 9 to the holder opening/closing cam 8, which is rotationally driven by the holder opening/closing cam 8. When the holder opening/closing cam 8 rotates 180 degrees, it rotates in the direction of arrow C around the shaft 5, and the holder is brought into the closed state. The holder is rotated in the direction of arrow D opposite to the holder, and the holder is in an open state. Also,
The holder opening/closing cam 8 has a protrusion 8a on its outer periphery, and an open position detection switch 10 and a closed position detection switch 11 are provided, which are operated by the protrusion a to detect the open/closed position of the holder 6. There is. Further, a start button 12 for starting the counting operation is provided on the top surface of the holder 6.

As shown in FIG. 2, the suction shaft 2 is hollow and opens at a flat banknote contact surface 2a. The hollow part 2b of the suction shaft 2 communicates with the vacuum pump 13 through a pipe 14, and a vacuum switch 15 is provided branching off from the pipe 14, and a solenoid is installed in the pipe 14 near the vacuum pump 13. A valve 16 is provided. Moreover, an actuating piece 17 (for example, an iron piece, etc.) is attached to the side surface of the rotary cylinder 1 in correspondence with the position of the suction shaft 2, and a proximity switch 18 is installed to detect when this actuating piece 17 approaches. .

The solenoid valve 16 closes its duct via the solenoid valve drive control unit 19 in response to a start signal issued when the start button 12 is operated, and then closes its duct in response to the first signal from the proximity switch 18. is closed.

In addition, the pump motor 20 that drives the vacuum pump 13 is controlled via the pump motor drive control section 21.
It starts driving in response to a start signal, and stops when the vacuum switch 15 turns OFF (when counting ends).

The holder motor 7 is connected to the holder motor drive control section 2
2, it is started by the start signal S, and stops when the closed position detection switch 11 is turned on,
Alternatively, it is started by an open signal, which will be described later, and is stopped when the open position detection switch 10 is turned on.

The counting motor 4 starts driving when the closed position detection switch 11 is turned on via the counting motor drive control section 23, and the vacuum switch 15 is turned on.
It will stop when it turns OFF.

The number counting unit 24 constituting the number counting means counts the counting timing pulse obtained from the output of the proximity switch 18 via the gate 25 when the vacuum switch 15 is in the ON state.

It should be noted that the counting end signal obtained by the fall of the vacuum switch output and the number counting unit 24
The count value signal is input to a count control unit (not shown), and corresponds to various known operation modes such as addition and check. When the numbers match, an open signal is output from the counting control section and the holder 6 is opened.

Next, the operation of this invention will be explained.

First, press the start button 12 to start the pump motor 20.
Then, the holder motor 7 is driven, and the solenoid valve 16 is closed. The holder 6 is moved in the direction of arrow C in FIG. 1 by the holder motor 7,
When the loaded bill 26 moves to a position where it contacts the suction shaft 2, the closed position detection switch 11 is turned on and the counting motor is activated.

The rotary cylinder 1 is rotated by the counting motor 4, and when the operating piece 17 corresponding to the suction shaft 2 passes the proximity switch 18, the solenoid valve 16 is activated by the first timing pulse output from the proximity switch 18. is considered open. Therefore, as shown in FIG. 3, the moment the rotary tube 1 is in the normal position, the interior of the suction shaft 2 becomes vacuum pressure, and the banknote contact surface 2a of the suction shaft 2 attracts and flips the obstructed banknote. Can be done. Thereafter, each suction shaft 2 successively attracts and turns over bills, and the proximity switch 18 detects the passing suction shaft 2 and outputs a counting timing pulse to the gate 25. Here, since the vacuum switch 15 also detects the vacuum pressure and is turned on, a counting timing pulse is output from the gate 25 to the sheet counting section 24, and the suction shaft 2 is attracted by the sheet counting section 24 and the sheet is turned over. Count the ivy banknotes.

When all the banknotes on the holder 6 have been turned over and counting has been completed, the banknote contact surface 2a of the suction shaft 2 is not blocked by the banknotes and is opened, so the degree of vacuum in the conduit 14 decreases and the vacuum switch 15 is opened. becomes OFF. As a result, the counting motor 4 and the pump motor 2
0 stops, and a holder open signal is issued to start the holder motor 7 and open the holder 6 in the direction of arrow D in FIG.

In FIG. 2, what is indicated by dotted lines is a mechanism added to further enhance the reliability of banknote counting operation. Solenoid valve 16 and vacuum pump 13
A second vacuum switch 27 is provided in the conduit connecting to the intake side of the vacuum switch 27, and the vacuum pressure level is the same as that at which the vacuum switch 15 described above (this will be referred to as the first vacuum switch) operates, or This second vacuum switch 27 is set to operate at a high vacuum pressure, and the counting motor 4 is driven after both the output of the closed position detection switch and the output of the second vacuum switch are output. (This is the second embodiment).

In the first embodiment described above, during the operating time of the holder 6 (the time until the counting motor 4 starts driving), the inside of the conduit 14 is maintained at a predetermined vacuum pressure (the first vacuum switch 15 is operated). Although no safety measures have been taken to ensure that the predetermined vacuum pressure is reached (sufficient vacuum pressure) for Even if the solenoid valve 16 is opened by the first pulse, the first vacuum switch 15 is not turned on, so counting is not started. However, in this second embodiment, the counting motor 4 and therefore the rotary cylinder 1 are started to be driven after the inside of the conduit 14 reaches a predetermined vacuum pressure, so there is no possibility of the above-mentioned malfunction occurring. .

As explained above, the present invention is configured such that a solenoid valve is provided in the conduit from the vacuum pump, and the passage of this solenoid valve is opened in response to the first signal from the proximity switch that detects passage of the suction shaft. Therefore, it is now possible to correctly attract paper sheets, turn them over, and start counting without having to stop the suction shaft and therefore the rotary cylinder at a fixed position. Therefore, there is no need for a mechanism for stopping the rotary cylinder in a fixed position, that is, a complicated mechanism such as a reversing function of the counting motor, a locking groove of the rotary cylinder, a reversing stopper, etc., and it is easy to manufacture and can be manufactured at low cost. It became. Additionally, there is no impact noise during reverse rotation, and there is no longer any risk of accidents such as motor burnout due to poor stationary position.

[Brief explanation of the drawing]

The drawings show the final embodiment of the present invention, and FIG. 1 is a plan view of the main part of the counting mechanism of a banknote counting machine, FIG. 2 is a control circuit block diagram showing a cross section of the main part of the counting mechanism, and FIG. 3 is a block diagram of the control circuit. is a timing chart showing the timing of each signal. 1...Rotating tube, 2...Suction shaft, 4...Counting motor, 6...Banknote holder, 7...Holder motor, 1
3...Vacuum pump, 14...Pipe line, 15...Vacuum switch, 16...Solenoid valve, 1
8... Proximity switch, 24... Sheet number counting section, 25
...Gate, 26...Banknotes.

Claims (1)

[Claims] 1. 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, and that rotates while revolving around the axis to generate paper by internal vacuum pressure. A suction shaft that picks up leaves one by one and turns them over, a vacuum switch that detects the vacuum pressure, a proximity switch that detects the passage of the suction shaft, and a pipe that connects the vacuum pump to the suction shaft and the vacuum switch. a solenoid valve provided in a path, a solenoid valve drive control unit that operates the solenoid valve in response to the first signal from the proximity switch after the rotary cylinder starts rotating, and connects the suction shaft to the vacuum pump; 1. A paper sheet counting machine comprising: a sheet counting section that counts signals output from the proximity switch on the condition that the user switch is ON.