JPH0116208Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" The present invention relates to a paper sheet counting machine, and in particular to a paper sheet counting machine that facilitates the adjustment of vacuum pressure for adsorption of paper sheets. It is.

``Prior art'' As a paper sheet counting machine used for counting banknotes in financial institutions, etc., there is, for example, a type that was previously applied for by the present applicant and published in Japanese Patent Application Laid-Open No. 1983-32087. .

As shown in FIG. 5, this paper sheet counting machine rotates a rotary tube 1 and attracts banknotes to a suction shaft 2 provided on the upper periphery of the rotary tube 1, and as the suction shaft 2 rotates. The suction shaft 2 is turned over one by one and counted, and when the suction shaft 2 rotates to an angle where the opening 3 provided on its circumferential surface faces the banknotes S on the banknote holder 4, the suction pipe is opened. It is connected to a vacuum pump 6 via a vacuum pump 5 to attract banknotes S and close the suction pipe 5 at other angles.

By the way, the counting operation in the above-mentioned paper sheet counting machine is performed by gradually rotating the rotary tube 1 while rotating the suction shaft 2.
is in a state where the suction pipe 5 is closed, and when the vacuum switch 7 detects that the vacuum pressure inside the suction pipe 5 has been increased to the extent that it can attract the banknote S, the rotation of the rotary cylinder 1 is started. On the other hand, the counting operation is completed by causing the vacuum switch 7 to detect a decrease in the vacuum pressure due to the fact that all the banknotes S are turned over and there are no more banknotes S to be sucked. However, banknote S
In order to obtain an appropriate vacuum pressure that is sufficient to adsorb the liquid and does not impose an excessive load on the drive motor 8 of the vacuum pump 6, the degree of opening of the leak valve 9 provided in the suction pipe 5 is adjusted. Therefore, it is necessary to adjust the amount of outside air sucked into the suction pipe 5.

``Problem to be solved by the invention'' In other words, to adjust the vacuum pressure of the paper sheet counting machine, remove the cap 10 from the head of the suction shaft 2 and install a vacuum gauge 11 in this part, as shown in FIG. is installed, and the vacuum pump 6 is operated with the opening 3 of the suction shaft 2 closed with fingers to increase the vacuum pressure in the suction pipe line 5 while adjusting the leak valve 9. Skill is required to adjust the opening degree of the leak valve 10 while observing the vacuum gauge 11 with the opening 3 blocked with fingers.

This idea was proposed in view of the above circumstances.
It is an object of the present invention to provide a paper sheet counting machine that can easily adjust the vacuum pressure without requiring any skill.

"Means for Solving the Problem" In order to achieve the above object, the present invention rotates the suction shaft to a position where it closes the suction pipe when the maintenance mode is selected, and A vacuum pressure sensor is provided to measure the pressure in the vacuum pipe line, and a reference vacuum pressure is compared with the measured value of the vacuum pressure sensor to cause a control circuit to output a matching signal.

"Embodiment" An embodiment of the present invention will be described below with reference to the drawings. In the figure, parts common to the conventional example are given the same reference numerals to simplify the explanation.

The rotary cylinder 1 in the illustrated example has a second axis centered around the axis 1a.
The suction shaft 2, which is provided along the outer periphery of the rotary cylinder 1, rotates clockwise in FIG.
It revolves counterclockwise around point a. Further, the center of the suction shaft 2 is located at the dashed lines A and B in FIG.
(hereinafter referred to as the suction range), the hollow part inside is mechanically communicated with the suction pipe 5 as shown in FIG. 1, and the vacuum from the suction pipe 5 The bill S is attracted by pressure and is turned over one by one.

A banknote holder 4 is provided on the side of the rotary tube 1, and the banknote holder 4 is driven by a holder motor 12 and rotates around a shaft 4a, thereby rotating the banknote holder 4 as shown by the solid line in FIG. The position of the banknote holder 4 changes depending on the rotation of the holder 4. Proximity switch 13A, 13
Detection is made depending on which one of B is activated.

Further, on the side surface of the rotary cylinder 1, a number of detecting pieces 14 corresponding to the suction shaft 2 (five in the illustrated example) are provided at equal intervals in the circumferential direction, and these detecting pieces 14 are arranged at rotational positions. Depending on whether the sensor 15 detects or not, it is determined whether or not the suction shaft 2 is within the suction range.

Note that reference numeral 16 is a counting motor, and this counting motor 16 is connected to the rotary cylinder 1 via a belt 17 to drive it.

On the other hand, branch pipes 5a and 5b are connected in the middle of the suction pipe 5, and the branch pipe 5a is provided with a vacuum pressure sensor 18 that detects the vacuum pressure inside the suction pipe 5. is provided with a leak valve 9.

Furthermore, the proximity switches 13A, 13B, rotational position sensor 15, and vacuum pressure sensor 18 are
connected to the receiver 20 of the control circuit 19;
Drive motor 8 of vacuum pump 6, holder motor 1
2 and the counting motor 16 are connected to a driver 21 of the control circuit 19.

The control circuit 19 connects the ROM 24 and RAM 25 to the bus 23 connected to the CPU 22, connects the receiver 20 via the input side I/O port 26, and further connects the receiver 20 to the output side I/O port 27. The configuration is such that the driver 21 is connected via the.

In addition to the above-mentioned devices, the receiver 20 is connected to a counting start button 28 for starting a counting operation and a mode changeover switch 29 for switching the operating mode of the device. A display section 30 displays detection data of the vacuum pressure sensor 18, reference vacuum pressure, etc. during maintenance mode operation, and informs the operator of coincidence, mismatch, etc. between set vacuum pressure and measured vacuum pressure in maintenance mode. lamp,
A notification section 31 consisting of a buzzer or the like is connected.

The paper sheet counter configured in this manner is selectively switched to a counting mode or a maintenance mode by operating the mode changeover switch 28, and performs the respective operation.Hereinafter, the control circuit 19
Flow chart showing the operation (Figures 3 and 4)
(see figure), operations in counting mode and maintenance mode will be explained. In the following explanation, Sn indicates the n-th step in the counting mode, and MSn indicates the n-th step in the maintenance mode.

[] Counting mode S ₁ : When the power is turned on, it is determined whether the holder 4 is in the open position or not. If YES, proceed to the next step S ₃ ; if NO, the holder motor 12 is opened. direction (S ₂ ).

S ₃ : It is determined whether one of the suction shafts 2 is present at the loading standby position, that is, the position shown by the solid line in Figure 2. If YES, proceed to the next step S ₅ .
If NO, the counting motor 16 is rotated at low speed to move the suction shaft 2 to the loading standby position (S ₄ ).

_S5 : It is determined whether or not the start button 28 has been pressed. If YES, the process proceeds to the next _S7 ; if NO, it is determined whether the mode switching signal has been output (S ₆ ). Then, if _S6 is NO, the process returns to _S5 , and if S6 is YES, the process proceeds to maintenance mode, which will be described later.

S ₇ : Determine whether or not the holder 4 is in the closed position, and proceed to the next step S ₉ if the answer is YES.
If NO, the holder motor 12 is operated to set the holder 4 to the closed position (S ₈ ).

_S9 : When the pump motor 8 is driven, the suction pipe 5
The vacuum pressure increases.

_S10 : Determine whether or not the suction shaft 2 is in the counting standby position, that is, the position immediately before the dashed line A in FIG. Proceed to the next S ₁₂ as a condition and NO
In this case, the counting motor 16 is reversely rotated at a low speed and set at a predetermined position (S ₁₁ ).

_S12 : The vacuum pressure increases through _S11 above, and it is determined whether the measured value of the vacuum pressure sensor 18 has reached a predetermined vacuum pressure sufficient to attract the banknote,
If the answer is YES, proceed to the next step _S13 .

S ₁₃ : While the suction shaft 2 rotates, the frontmost banknote S
The paper is turned over and counting begins.

S ₁₄ : The bills S held in the holder 4 are sequentially counted while being turned over one by one.

S ₁₅ : Based on the detection signal of the vacuum pressure sensor 18, it is determined whether or not a predetermined vacuum pressure is generated during bill suction. At this time, if all the banknotes have been turned over, there will be nothing blocking the opening 3 of the suction shaft 2, so the vacuum pressure will drop, and if this vacuum pressure drop is detected, the next S Proceed to ₁₆ .

S ₁₆ : The counting motor 16 and the pump motor 8 are stopped and the holder 4 is rotated to the "open" position.

_S17 : Determine whether or not the holder 4 is in the "open" position, and if YES is the condition, one counting operation is completed and the process returns to _S1 , and the process proceeds to _S5 to prepare for the next count. Proceed to _S6 .

[] Maintenance mode The maintenance mode starts on the condition that the mode switching signal is detected in step _S6 of the counting mode.

MS ₁ : Set suction pressure P ₀ , that is, suction shaft 25
is sufficient to adsorb the bill S, and the vacuum pump 6
Suction that does not exceed the rating of the drive motor 8 (for example, the ROM 24 or
The vacuum pressure stored in RAM 25) is displayed on display 3.
Display at 0.

MS ₂ : Proceed to the next MS ₃ on the condition that the operator issues an instruction to start maintenance mode.

MS ₃ : Start pump motor 8.

MS ₄ : Based on the signal from the rotational position sensor 15,
It is determined whether all the suction shafts 2 are in the position where they close the suction pipe line 5, that is, in the standby position at the time of counting, and if YES is determined, the process proceeds to the next MS ₆ . In the case of NO, the counting motor 16 is reversely rotated at low speed to rotate the suction shaft 2 to a predetermined position (MS ₅ ). Then, when the suction line 5 is sealed, the vacuum pressure within the line gradually increases.

MS ₆ : Said set vacuum pressure P ₀ and vacuum pressure sensor 18
The measured data P _X are displayed on the display unit 30, and while comparing P ₀ and P _X , the leak valve 9 is gradually closed from the fully open state by manual operation.

MS ₇ : Vacuum pressure measurement value P _X and the maximum vacuum pressure set above
Compare with P ₀ and proceed to the next MS ₁₀ if they match (YES). On the other hand, it does not match (NO)
In this case, it is determined whether a certain period of time (a time set based on the rated operating time of the pump motor 8 and the time allowed for adjusting the vacuum pressure) has elapsed (MS ₈ ), and the operation is continued until the certain period of time has elapsed. Repeat the following operations for MS ₄ . Furthermore, when a certain period of time has elapsed, the notification unit 31 is activated to issue an alarm to notify the operator, or the display unit 30 displays an indication that the vacuum pressures do not match (MS ₉ ).

MS ₁₀ : A coincidence signal is output, the notification section 30 is activated, and notification is made that P _X =P ₀ has been reached.

MS ₁₁ : The pump motor 8 is activated under the condition that a certain period of time (a period of time during which the vacuum pressure in the suction pipe 5 reaches an equilibrium state and the vacuum pressure is considered not to change) has elapsed.
and the notification unit (MS ₁₂ ). Then, until a certain period of time has elapsed, the above
Repeat the behavior from MS ₄ onwards.

In the above embodiment, the notification unit is operated by the coincidence signal, but for example, the leak valve is automatically closed from the fully open state, and this closing operation is stopped on the condition that the coincidence signal is output. You may also do so.

"Effects of the invention" As is clear from the above explanation, the present invention rotates the suction shaft to the position where it closes the suction pipe when the maintenance mode is selected, and also installs a vacuum pressure sensor in the middle of the suction pipe. is installed to measure the pressure in the vacuum pipe line, compare the reference vacuum pressure with the measured value of the vacuum pressure sensor, and output a matching signal to the control circuit, so maintenance mode is selected. By performing this simple operation, you can automatically seal the suction line and start adjusting the suction pressure, and also generate a coincidence signal that is generated when the suction pressure and the reference pressure match. This has the effect that the suction pressure can be easily set by a simple operation of adjusting the opening degree of the leak valve while referring to it.

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of the present invention, where Figure 1 is a plan view, Figure 2 is a block diagram, and Figure 2 is a block diagram.
Fig. 3 is a flowchart showing the operation of the control circuit in counting mode, Fig. 4 is a flowchart showing the operation of the control circuit in maintenance mode, and Figs. 5 and 6 are respectively conventional paper sheet counting machines. FIG. 4 is a sectional view showing a state in which the vehicle is being operated and a state in which the vehicle is being adjusted. 1... Rotating cylinder, 1a... Shaft, 2... Suction shaft, 2
a...Shaft, 4...Holder, 5...Suction pipe, 6
...Vacuum pump, 9...Leak valve, 14...
Detection piece, 15...Rotational position sensor, 16...Counting motor, 18...Vacuum pressure sensor, 19...Control circuit, 29...Mode changeover switch, 30...Display section, 31...Notification section.

Claims (1)

[Scope of utility model registration request] A plurality of suction shafts are provided near the periphery of a rotary cylinder that is driven and rotated by a counting motor, and each suction shaft rotates on its own axis in conjunction with the rotation of the rotary cylinder. When the suction shaft is connected to a vacuum source, the paper sheets are attracted to the suction shaft, and the paper sheets are turned over one by one and counted, and the suction shaft is located at a position outside the rotation range. In a paper sheet counting device in which the suction shaft is cut off from the vacuum source to seal the suction pipe between them,
A leak valve that adjusts the intake air amount and a vacuum pressure sensor that measures the vacuum pressure of the suction pipe are provided to determine whether or not the suction shaft is in a position near the rotating cylinder to block the suction pipe. the sensor, a counting motor for driving the rotating shaft and the suction shaft, and the vacuum pressure sensor are respectively connected to a control circuit, and the control circuit controls the control circuit when the maintenance mode is selected. Operating the counting motor at a constant speed to rotate the suction shaft to a position where the suction pipe is closed, and at the same time comparing preset reference vacuum pressure data with the measured value of the vacuum pressure sensor and outputting a matching signal. A paper sheet counting machine featuring: