JPH0116204Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a paper sheet counting device, in particular, uses a flywheel provided on a one-clutch and a tension roller to reliably feed paper sheets into a paper receiving section without leaving them in the conveyance path. The invention relates to a paper sheet counting device.

Normally, as shown in Figure 1, the motor's rotation speed is less than the specified number during the time A from when the power switch is turned on until it starts up to the specified number, and the time B from when the power switch is turned off until it stops. Therefore, paper sheet counting devices that count the paper sheets while determining the length of the paper sheets by measuring the time it takes for the paper sheets to pass through the detection unit are not able to meet the specified number of sheets. Only the time C when the rotating state was reached was utilized.
That is, in the conventional paper sheet counting device, a clutch and an electromagnetic brake are disposed between the drive motor and the feed roller, and the time A required for the motor to reach a specified number of revolutions after the power switch is turned on. In the conventional method, the clutch was turned off and the rotation of the motor was not transmitted to the delivery roller, and when the number of rotations of the motor reached a specified number, the clutch was turned on and the rotation of the motor was transmitted to the delivery roller. In addition, when stopping the delivery roller, the clutch was turned off and the delivery roller was stopped using an electromagnetic brake.

In the case of such conventional paper sheet counting devices,
When the delivery roller is stopped, the delivery roller and the tension roller, which are connected by the transmission body, stop at the same time, and the paper sheet sent by the delivery roller remains in the conveyance path between the delivery roller and the tension roller or on the tension roller. There were problems in that this could lead to errors in counting or become an obstacle to starting a new count.

Furthermore, since electrically charged paper particles floating in the air are likely to adhere to the pressure contact surface of the clutch, the clutch requires a special dust-proof structure, which increases the external dimensions of the entire device.

The present invention has been made to eliminate the above-mentioned drawbacks, and is a paper sheet counting device that does not leave any paper sheets in the conveyance path when stopped, and has a small external size without the usual clutch. is intended to provide.

In order to achieve this object, the present invention provides a paper sheet counting device including a rotatably provided cylindrical delivery roller, a rotational drive means for rotating the delivery roller, and a rotational drive means for rotating the delivery roller. a first tensioning roller shaft which is rotated via a transmission body and has a flywheel at one end and a first tensioning roller; and a first tensioning roller shaft which is provided on the shaft of the delivery roller or tensioning roller and is free to the direction of rotation in which the sheet is conveyed and is opposite thereto. a one-way clutch that locks against the first tension roller; and a second tension roller shaft having at one end a second tension roller that rotates in conjunction with the first tension roller, and is held between the respective tension rollers by the inertia of the flywheel. This device is configured to send out paper sheets that have been removed.

Since the present invention has the above-described configuration, even if the feed roller stops, the first tension roller shaft and its roller rotate due to the inertia of the flywheel, and the second tension roller connected thereto is also driven. , the sheet of paper sandwiched between the first and second tension rollers is always fed out. Further, since there is no need to provide a conventional clutch and a brake can also be omitted, the entire device can be made extremely compact and compact.

Hereinafter, preferred embodiments of the paper sheet counting device according to the present invention will be described in detail with reference to the drawings.

In FIG. 2, the reference numeral 1 indicates a feed-out roller shaft having a feed-out roller 2 having a generally cylindrical shape as a whole. A second pulley 7 provided at an end of an output shaft 6 of a drive motor 5 is attached to an end of the first belt 4. Braking means consisting of an electromagnetic brake 8 is integrally attached to the center of the output shaft 6, and as the drive motor 5 rotates, the feed roller 2 and the feed roller shaft 1 are simultaneously rotated. , the respective pulleys 3 and 7, the first belt 4, and the feed-out roller shaft 1 constitute a rotation driving means 9 for the feed-out roller 2. It should be noted that the brake means 8 can be provided on any of the rotary drive means to obtain the same effect.

Further, a pinch roller 10 is connected to the feed roller 2, and a third pulley 12 connected to a second belt 11 as a transmission body is integrally provided at the other end of the feed roller shaft 1. , a fourth pulley 1 is attached to the other end of this second belt 11.
3 is provided. This fourth pulley 13 is provided with a first tension roller shaft 16 which integrally has a first tension roller 15 via a one-way clutch 14, and the other part of this first tension roller shaft 16 has a certain weight. A flywheel 17 is integrally attached thereto. Further, this one-way clutch 14 is not limited to the fourth pulley 13, but may be provided to the third pulley 12. Further, a second tension roller 19 provided at one end of a second tension roller shaft 18 is connected to the first tension roller 15, and a pulse generator by a known means is connected to the other end of the second tension roller shaft 18. 20 are provided. The one-way clutch 14 has a direction in which the paper sheet is sent out;
That is, it is in a free state in the counterclockwise direction (indicated by arrow a) and in a locked state in the clockwise direction (indicated by arrow b), and the flywheel 17 is in a free state when the brake means 8 is operated. Even if the feed roller 2 stops rotating, its inertial force allows the first and second tension rollers 15 and 19 to rotate in the directions indicated by the arrows.

FIG. 3 shows a schematic summary of the configuration of FIG. 2 as an overall configuration diagram.
The paper sheets 22 stacked on the paper feed section 21 are provided at the upper part of the paper feed section 21, and a separation roller 23 is joined to the guide plate 24, which has an approximately semi-cylindrical shape as a whole. It is set in. A paper sheet detection section 28 consisting of a light source 26 and a light receiving element 27 is provided at the exit section 25 of the guide plate 24, and the pair of tension rollers 15 are provided adjacent to the paper sheet detection section 28.
and 19 are provided. A paper receiver 30 having a receiver wheel 29 is disposed at the end of the guide plate 24.

In the above configuration, the case where the paper sheet counting device according to the present invention is operated is as follows.
First, by turning on a power switch (not shown), the drive motor 5 rotates, and the second pulley 7,
The feed roller 2 on the feed roller shaft 1 starts rotating in the direction of the arrow via the first belt 4 and the first pulley 3. Due to this rotation of the feed roller 2, the paper sheets 22 on the paper feed section 21 are separated by the separation roller 2 due to the frictional force between the peripheral surface of the feed roller 2 and the paper sheets.
The sheets are separated one by one and conveyed along the guide plate 24 to the sheet detecting section 28 while being pinched by the pinch rollers 10. When the sheet detecting section 28 detects the leading edge of the sheet 22, the sheet detecting section 28 starts measuring the length of the sheet 22 in response to a pulse signal generated from the pulse generator 20, and detects the length of the sheet 22. The measurement is completed when the rear end is detected. Further, the paper sheet detection section 28 detects the paper sheet 22.
When the tip of the sheet is detected, a counting signal is generated, and a counting section (not shown) counts the number of sheets. Furthermore, in a comparator (not shown), preset values for the length, brightness, and position deviation of the paper sheet 22 are compared with the measured values detected by the paper sheet detection unit 28, and the abnormal paper sheet is detected. When an abnormality is detected, an abnormality detection signal is input to a drive control section and a display control section (not shown).

The paper sheet 22 that has passed through the paper sheet detection section 28 is held by each tension roller 15 and 19 and sent to the paper receiving section 3.
It is accumulated to 0.

Next, in the case of batch counting, when the sheet detecting section 28 detects the leading edge of the last sheet of the set number of sheets and generates a counting signal, a comparator (not shown) detects an abnormal sheet or conveyance abnormality. ) and generates an abnormal signal, the drive control section (not shown) stops the drive motor 5 and uses the electromagnetic brake 8 to stop the output shaft 6.
is suddenly stopped, and at the same time as the rotation of the feed roller 2 is stopped, the paper sheet 22 is no longer fed from the paper feed section 21. At the same time, the rotation of the fourth pulley 13 suddenly stops, but the fourth pulley 13 and the tension roller shaft 16
The one-way clutch 14 provided between the second tension roller 19 rotates the tension roller 15 in the direction of arrow a (that is, the direction in which the one-way clutch 14 is free) by the inertial force of the flywheel 17. The tension rollers 15 and 19 simultaneously rotate to send the last sheet 22 located in the sheet detection section 28 to the paper receiving section 30 while continuing to rotate.

Furthermore, the configuration shown in FIG. 4 shows another embodiment of the paper sheet counting device according to the present invention, in which an electromagnetic brake 8 as a braking means is attached to the feed-out roller shaft 1 of the feed-out roller 2, Since the other configurations and operations are the same as those of the above-described embodiment and can achieve exactly the same effects, the same reference numerals will be used and the explanation will be omitted.

Since the paper sheet counting device according to the present invention has the above-described structure and operation, the sudden stop of the feed roller completely prevents subsequent paper sheets from entering the conveyance path, and the batch counting In addition, the last paper sheet located at the exit of the conveyance path is transported by a one-way clutch, and the flywheel rotates with inertia. Obstacles caused by paper sheets fed into the receiving section remaining in the conveyance path are completely eliminated.

Furthermore, there is no need to provide a conventional clutch in the rotary drive means, and the entire device can be made extremely compact and compact.

[Brief explanation of drawings]

Fig. 1 is a characteristic diagram showing the counting state with respect to the rotation time of the drive motor in a conventionally used device, Fig. 2 is a perspective view showing the main parts of the paper sheet counting device according to the present invention, and Fig. 3 is FIG. 4 is a side view showing the overall configuration of the paper sheet counting device according to the present invention, and FIG. 4 is a side view showing another embodiment. 1 is the delivery roller shaft, 2 is the delivery roller,
3 is a first pulley, 4 is a first belt, 5 is a drive motor, 6 is an output shaft, 7 is a second pulley, 8 is an electromagnetic brake (braking means), 9 is a rotary drive means, 10
is the pinch roller, 11 is the second belt, and 12 is the third belt.
Pulley, 13 is a fourth pulley, 14 is a one-way clutch, 15 is a first tension roller, 16 is a first tension roller shaft, 17 is a flywheel, 18 is a second tension roller shaft, 19 is a second tension roller, 2
0 is a pulse generator, 21 is a paper feed section, 22 is a paper sheet,
23 is a separation roller, 24 is a guide plate, 25 is an exit section, 26 is a light source, 27 is a light receiving element, 28 is a paper sheet detection section, 29 is a receiving wheel, and 30 is a paper receiving section.

Claims (1)

[Scope of utility model registration request] A rotatably provided cylindrical delivery roller, a rotational drive means for rotating the delivery roller, and a first roller which is rotated by the rotational drive means via a transmission body and has a flywheel at one end and a first tension roller. a one-way clutch which is provided on the shaft of the feed roller or the tension roller and is free in the direction of rotation in which paper sheets are conveyed and locked in the opposite direction; a second tensioning roller shaft having a second tensioning roller at one end that rotates, the paper sheet being configured to send out the paper sandwiched between the respective tensioning rollers by the inertia of the flywheel. type counting device.