JPS592960B2 - Paper sheet holder for paper sheet counting machine - automatic opening/closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a paper sheet counting machine in which paper sheets such as banknotes, slips, cards, etc. are held in a holder that is open at a loading position, and the holder is moved to a closed state at a counting position. This invention relates to an automatic opening/closing operating device.

In other words, it detects that the paper sheets (hereinafter referred to as banknotes) have finished counting and the holder has returned from the closed position to the open position, and closes the vacuum pump valve to maintain the negative pressure inside the piston, and then starts the vacuum pump. It is characterized by stopping.

Conventionally, this holder was opened and closed manually or by a dedicated motor.

In the case of a dedicated motor, for example, a one-rotation stop mechanism or deceleration mechanism is required to regulate the opening and closing positions of the holder, and an extra motor is provided just for this purpose, which is disadvantageous in terms of economy and weight. It was something that caused

The present invention uses a piston device to perform smooth operation using vacuum pressure used for counting banknotes without using a motor or the like.

Next, one embodiment of the present invention shown in the drawings will be described in detail.

Reference numeral 1 denotes a rotary cylinder, and a plurality of suction shafts 2 are provided on the rotary cylinder, and the suction shafts 2 revolve around and around its axis as the rotary cylinder 1 rotates, as is well known.

The holder 3 that holds the bundle of banknotes a is a holder arm 4
The holder 3 is fixed to a shaft 5 via a shaft 5, and the holder 3 is operated around this shaft 5 to open the loading position and close the counting position.

A gear 6 is also fixed to the shaft 5, and a paper presser arm 8 having a paper presser bar 1 is loosely fitted therein, and a spring 9 is attached to the arm 8 by tension between it and the holder arm 4. A spring 10 is provided, one end of which is fixed to the body.

A hook lever 12 is connected to the gear 11 that meshes with the gear 6 and can rotate around a shaft 13.
An arm 14 is provided at the tip of the arm 14, which has a pin 15 connected to a rod 16 and is biased by a spring 17.

The rod 16 is interlocked with a piston 18 of a piston device,
The cylinder 19 of the piston 18 is free to swing around a pivot 20, and an open position switch 21 and a closed position switch 22 of the holder 3 are provided along the stroke of the rod 16 and are operated by the rod 16. There is.

An example of the piping configuration of the piston device will be explained with reference to FIG.
The air supply pipe 27 also connects via a solenoid valve 25 to an air supply pipe 27 on the intake side of the vacuum pump 26, and the air supply pipe 27 passes through a cleaner 28 on one side to the air supply side of the vacuum pump 26, and on the other side rotates via a solenoid valve 29. It communicates with each suction shaft 2 of the cylinder 1.

However, as is well known, the suction hole 30 of the suction shaft 2 communicates only with the suction shaft 2 at the banknote suction position, and 31 is a vacuum switch that is switched when the reduced pressure in the air supply pipe 27 reaches a predetermined amount. is activated, and counting operations such as turning over the bills one by one are started.

Note that the exhaust pipe 32 on the exhaust side of the vacuum pump 26 is connected to the cleaner 3.
3, the nozzle 35 is opened below the bill turning position and exhaust gas is ejected from the nozzle 35 for spraying the bill to be turned over so as not to overlap the bill.

As shown in the block diagram in FIG. 3, it has a holder control circuit C that controls the automatic opening and closing of the holder 3, and this circuit C includes a power switch S1, a holder open position switch 21, a closed position switch 22, and a start switch. Signals from the SS and the vacuum switch 31 are input, and these are controlled to drive the drive motor M of the vacuum pump 26, the solenoid valves 25 and 29, and the counting motor CM that performs forward and reverse rotation for addition and subtraction. A signal is output to each.

As shown in FIG.
1 is closed and the solenoid valve 29 is closed, the piston 18 is positioned upward as shown in FIG. 1A (to the left in FIG. 2) due to the low pressure in the hose 23 between the cylinder 19 and the solenoid valve 29. are doing.

Then, when the bundle of banknotes a is attached to the holder 3 and the start switch SS is turned on, the solenoid valve 29 (
The solenoid valve 25 is open) is opened, and the inside of the air supply pipe 27 communicates with the suction hole 30 and becomes atmospheric pressure, so the piston 18 descends (moves to the right in FIG. 2) due to the stored force of the spring 17 and opens. Even if the start switch SS is opened by releasing the contact between the position switch 21 and the rod 16, the solenoid valve 29 continues to be opened.

Said actuation of the rod 16 occurs gradually and without danger due to the restriction of the amount of air flow by the orifice 24.

Further, the actuation of the rod 16 causes the pin 15 and the arm 14 to rotate counterclockwise around the shaft 13, and the hook lever 12 having a hook 12' that engages and disengages from the arm 14 and the gear 11 are separated from each other by the hook 12'. The holder arm 4 is free to rotate, but the force is stored by the spring 9, and the holder 3 loaded with banknotes a.
The clockwise rotation of the arm around the shaft 5 rotates the gear 11 via the gear 6, so the hook lever 12 rotates the arm 1.
Follows the rotation of 4.

When the banknote a comes into contact with the paper presser bar 7, the banknote a is held between this and the holder 3, and the rotational bias by the spring 9 is no longer applied.
Furthermore, the paper presser arm 8 is rotated by the spring 10.
When the holder 3 reaches the closed position so that the surface of the bundle of banknotes a comes into contact with the suction hole 30, the holder 3 stops, but the rod 16 continues to descend without the hook lever 12 being stopped. Rod 16 actuates the closed position switch 22.

(See FIG. 1B, but the loading of banknotes a is omitted in this figure.) When the close position switch 22 is activated, the drive motor M of the vacuum pump 26 starts to pump the air in the air supply pipe 27. As described above, since the bill a is in contact with the suction hole 30, the pressure inside the air supply pipe 27 is reduced, and when the pressure reaches a predetermined low pressure or less, the vacuum switch 31 is closed, and the counting motor CM starts rotating, causing the rotating cylinder to 1 and the suction shaft 2 rotate and revolve to pick up the banknotes a one by one, and the quantity is appropriately displayed on the display board of the counter, etc., and as the amount of banknotes a decreases, the suction shaft is moved by the holder 3 spring 10. Close to 2.

When all the banknotes a in the holder 3 are turned over, the atmosphere enters through the suction hole 30, so the vacuum switch 31 is opened and the solenoid valve 29 is closed. At the same time, the solenoid valve 25 is opened, but the rotation of the drive motor M is stopped. Continued, air supply pipe 27
Since the pressure inside the cylinder 19 is reduced through the through hole of the solenoid valve 25 and the orifice 24, the piston 18 is activated, and the arm 14 engages the hook lever 12 midway, and the gears 11 and 6 gradually return the holder 3 to the open position. During this time, the paper presser arm 8 is separated by the stopper 34.

When the holder 3 reaches the open position, the rod 16 contacts the open position switch 21, stops the drive motor M of the vacuum pump 26, closes the solenoid valve 29, and returns to the original position.

As described above, even if the vacuum pump 26 is stopped, the low pressure in the air supply pipe 27 is maintained between the cylinder 19 and the solenoid valve 29, so the holder 3 will not move toward the closed position.
Since the drive motor of the vacuum pump only needs to be operated during counting, it is labor-saving and does not generate noise.

In addition, by predicting that the piston 18 will operate due to a slight leak of low pressure in the air supply pipe 27, the contact area between the rod 16 and the open position switch 21 is determined in advance, so that when the open position switch is turned off, The holder may be returned to its original position only after the drive motor rotates.

A timing graph showing the timing in the above control circuit C is shown in FIG.

As described above, according to the present invention, the holder can be maintained in the open position without constantly operating the vacuum pump.

[Brief explanation of the drawing]

The drawings show an embodiment of the device of the present invention, in which Fig. 1A is a plan view with the holder in the open position, Fig. 1B is a plan view also in the closed position, Fig. 1C is a side view, and Fig. 1C is a side view. The figure is a sectional view illustrating the piping configuration, FIG. 3 is a block diagram, and FIG. 4 is a timing graph. Code: a is a bundle of paper sheets, b is a piston device, C is a holder control circuit, 1 is a rotating cylinder, 2 is a suction shaft, 3 is a holder, 1
4 is anim, 16 is a rod, 18 is a piston, 19 is a cylinder, 21 is an open position switch, 12 is a closed position switch, 25° 29 is a solenoid valve, 26 is a vacuum pump, 27 is an air supply pipe, 30 is a suction hole, 31 is a vacuum switch, 32
is the exhaust pipe.

Claims (1)

[Claims] 1. A piston device is provided that rotates the sheet holder between an open state in the loading position and a closed state in the counting position, and has an open position switch and a closed position switch that detect the operation of the piston at the surface position. In addition, by providing a solenoid valve operated by the switch in an air supply pipe connected to these and connecting the suction hole of the suction shaft and the vacuum pump, and in a pipe connecting the piston device and the air supply pipe, the vacuum pump can be operated. An automatic paper sheet holder opening/closing device for a paper sheet counting machine, characterized in that the pressure inside the pipe is maintained at a low level and the holder is maintained in an open position even when the paper sheet counter is stopped.