JPH07237773A - Paper sheet transfer device - Google Patents

Abstract

PURPOSE:To permit the high speed responce and improve the processing faculty by installing a vibration part equipped with plural pairs of electrode groups made of the piezoelectric ceramics, as a main member for the transfer of paper sheets, and generating the progressive wave which advances in one direction of the circumferential direction in the vibration part. CONSTITUTION:A vibration part 1 as main member for the transfer of a paper sheet is equipped with a plurality of electrode groups as a collection body of the equally divided electrodes 2a-2d which are made of piezoelectric ceramic and arranged in an annular form. A bending vibration which advances in one direction (counterclockwise direction) of the circumferential direction of the vibration part 1 is generated by inputting the sine wave signals having the phases which are successively deflected by the equal angle into the electrode groups. Rollers 3-5 are revolved in the A direction by the progressive wave generated on the outer periphery of the vibration part 1, and the paper sheet 40 which is transferred to the position of the roller 3 is transferred along the guides 14 and 15 successively, and sent to a convergence point 31, and then transferred to a transfer outlet 32 side, nipping-held between the transfer belts 11 and 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet transporting device capable of reversing the transporting direction of single-leaf paper sheets in the forward direction or the reverse direction and discharging them to the same transport outlet.

[0002]

2. Description of the Related Art FIG. 5 is a front view showing an operating state of an example of a conventional sheet conveying apparatus, FIG. 6 is a front view showing another operating state of the example of FIG. 5, and FIG. 7 is an example of FIG. It is a front view which shows another operation state.

As shown in FIG. 5, a conventional paper sheet conveying apparatus capable of reversing the conveying direction of a single sheet material to the normal direction or the reverse direction and discharging the same is shown in FIG. (Large-diameter grip roller) 50 and this large-diameter roller 5
The rollers 3 to 5 that contact the outer circumference of 0 and transport the paper sheet 40 by sandwiching it with the large-diameter roller 50, and the roller 6 that transports the paper sheet 40 that has been transported to the transport inlet 30 to the position of the roller 3. And 7, the guides 13 and 14 for guiding the paper sheet 40 at this time, and the paper sheet 40 conveyed between the large-diameter roller 50 and the guide 14 so as to be conveyed along the large-diameter roller 50. The guide 15 that guides the paper sheet 40 conveyed between the large-diameter roller 50 and the guide 15 toward the confluence point 31, and the paper sheet 40 conveyed to the confluence point 31 are nipped. Conveyor belts 11 and 12 that convey the conveyor belt 32, rollers 7 and 9 that wind the conveyor belt 11 and drive it, rollers 8 and 10 that winds and drives the conveyor belt 12, and the tip of the guide 13. Between the large diameter roller 50 and A gate 17 is provided and is biased toward the guide 14 by a spring 18, sensors 22 and 23 provided near the roller 5 for detecting passage of the paper sheet 40, and the conveyor belts 11 and 12 are provided. Sensors 24 and 25 that are provided at positions where they contact each other to detect passage of the paper sheet 40, a motor 54 that drives the rotational movement of the motor 54, and a timing pulley 51 that is mounted on the shaft of the large diameter roller 50. A timing pulley 52 mounted on the shaft of the motor 54, and a timing belt 53 wound around the timing pulley 51 and the timing pulley 52 to transmit the rotation of the motor 54 to the large diameter roller 50.

The operation of the paper sheet conveying apparatus configured as described above is performed when the paper sheet 40 is conveyed in the forward direction, that is,
The paper sheet 40 that has been conveyed to the conveyance entrance 30 (arrow C) is guided by the large-diameter roller 50 along the guides 14 and 15 as it is.
Transporting around and passing through the confluence 30 to transport outlet 32
When ejecting the sheet to the position of the roller 3 as shown in FIG. 5, the sheet 40 conveyed to the conveying inlet 30 is conveyed to the position of the roller 3 while pushing down the tip of the gate 17 by the conveying rollers 6 and 7. The large-diameter roller 50 rotating in the direction of the arrow G by the rotation direction arrow K) and the roller 3 rotating in the direction of the arrow A by the large-diameter roller 50 are conveyed along the guide 14 to the position of the roller 4, and subsequently. The roller 4 (the arrow A in the direction of rotation) and the large-diameter roller 50 to convey it to the position of the roller 5 along the guide 15.
Further, the roller 5 (rotation direction arrow A) and the large-diameter roller 50 convey the space between the lower portion of the guide 16 and the conveyor belt 12 to the confluence 31. Paper sheet 4 conveyed to the confluence 31
0 is sandwiched between the conveyor belts 11 and 12, is conveyed to the conveying outlet 32, and is discharged to the outside (arrow D).

When the paper sheet 40 is conveyed in the reverse direction, that is, in the direction of returning to the gate 17, the conveyance outlet 32
When the sheet is discharged, the motor 54 is stopped when the tip of the sheet 40 reaches the sensor 22 and 23 and the sensor 22 and 23 detect it, as shown in FIG. As a result, the large diameter roller 50 and the rollers 3 to
The rotation of 5 also stops, and the conveyance of the sheet 40 is interrupted.

Subsequently, as shown in FIG. 7, the rotation direction of the large diameter roller 50 is reversed by rotating the motor 54 in the direction of arrow M (direction of arrow H), and the large diameter roller 50 and the rollers 4 and 3 (rotation). 40 by the direction arrow B)
Is conveyed to the gate 17. The paper sheet 40 that has reached the position of the gate 17 passes between the gate 17 and the upper portion of the guide 16 and is conveyed to the confluence point 31.
It is sandwiched between 1 and 12 and conveyed toward the conveyance outlet 32 and discharged to the outside (arrow D).

At this time, the sensors 24 and 25 are replaced by the paper sheet 40.
When the passage of the trailing edge is detected, the rotation of the motor 54 is stopped, and then the motor 54 is rotated again in the direction of arrow K (see FIG. 5) to prepare for the next sheet conveyance.

[0008]

The conventional paper sheet conveying apparatus as described above can be discharged to the same conveying outlet while being conveyed in the forward direction and the backward direction, so that it is combined with an external front / back determination apparatus. By doing so, it is possible to align the front and back of paper sheets with the front and back mixed, but since the large diameter roller is driven by the motor via the timing pulley and timing belt, many parts are required and the device is It has the drawback of becoming large. Further, when reversing the transport direction of the paper sheet, it is necessary to stop a component having a large inertia and drive it in the opposite direction, so that there is a drawback that it is not possible to respond at high speed.

[0009]

SUMMARY OF THE INVENTION A paper sheet conveying apparatus according to the present invention includes an annular vibrating portion formed of piezoelectric ceramic and having an electrode formed of a plurality of electrode groups on an inner peripheral portion thereof, and the vibrating portion being in contact with the vibrating portion. And a plurality of rollers that rotate in a rotating manner, and the electrode of the vibrating portion has a plurality of sets of electrode groups that are a group of a plurality of equally divided electrode portions. The electrode parts are sequentially arranged one by one, and a sine wave signal whose phase is sequentially deviated by the same angle in the same direction is input to each set of the electrode group, so that the circumference of the vibrating part is reduced. A control that generates a bending vibration that advances in one direction and reverses the rotation direction of the roller by changing the direction in which the phase of the sine wave signal is shifted to make the paper conveyance direction the forward direction or the reverse direction. And including A rotation speed detection unit that detects the rotation speed of the roller, and a control unit that controls the rotation speed of the roller by controlling the sine wave voltage applied to the electrode group of the vibration unit based on the information from the rotation speed detection unit. Is.

[0010]

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

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a front view showing an operating state of the embodiment of FIG. 1, and FIG.
4 is a front view showing another operation state of the embodiment of FIG. 4, and FIG. 4 is a front view showing still another operation state of the embodiment of FIG.

In FIG. 1, a vibrating portion 1 is made of piezoelectric ceramic and has an annular shape, and is a group of individual electrodes 2a to 2d equally divided into inner peripheral surfaces.
A plurality of sets of electrode groups 2A to 2D (the whole is referred to as an electrode 2, and each electrode group 2A to 2D has a respective electrode portion 2a to 2d).
which is a collection of d). This electrode group 2A-2
A sinusoidal wave signal whose phase is sequentially shifted by the same angle is input to D to generate a bending vibration (which will be referred to as a traveling wave) that advances in one circumferential direction of the vibrating portion 1. You can The rollers 3 to 5 have the same structure and function as the rollers of the conventional example shown in FIG. 5, and are in contact with the outer circumference of the vibrating portion 1. A rotation speed detection unit 19 is attached to the roller 3, and the roller 3 detected by the rotation speed detection unit 19
Information regarding the number of rotations of is transmitted to the control unit 20. The control unit 20 controls the sine wave signal given to the electrode 2 via the driver 21 based on the information from the rotation speed detection unit 19. Components other than those described above, that is, rollers 6 to 10,
Conveyor belts 11 and 12, guides 13 to 16, gate 1
7, the spring 18, and the sensors 22 to 25 are the same as in the conventional example of FIG.

The four electrode groups 2A to 2D provided on the inner peripheral surface of the vibrating portion 1 form a group of corresponding electrode portions 2a to 2d, and each group has 90 electrodes in sequence.
When sinusoidal signals whose phases are different from each other are given through the driver 21, a bending vibration (traveling wave) that propagates in one direction is generated on the outer circumference of the vibrating portion 1. The traveling waves cause the rollers 3 to 5 to rotate, so that the paper sheet 40 conveyed between the vibrating unit 1 and the rollers 3 to 5 is rotated in the direction of rotation of the rollers 3 to 5.
That is, it is sent in the traveling direction of the traveling wave.

Next, the operation of the paper sheet conveying apparatus configured as described above will be described.

When the paper sheet 40 is conveyed in the forward direction, that is, the paper sheet 4 has been conveyed to the conveyance entrance 30 (arrow C).
When 0 is directly conveyed around the vibrating portion 1 along the guides 14 and 15 and passed through the confluence point 30 and discharged to the conveyance outlet 32, it has been conveyed to the conveyance inlet 30 as shown in FIG. Rollers 6 and 7 for conveying the paper sheet 40
Roller 3 while pushing down the tip of gate 17
To the position. At this time, electrode groups 2A: sinwt, 2B: coswt, 2C: -sinwt, and 2C: sinwt, 2C for the electrode groups 2A-2D provided on the inner peripheral surface of the vibrating portion 1, respectively.
When a sine wave signal whose phase is D: -coswt is sequentially shifted by 90 degrees is given, a traveling wave indicated by an arrow E is generated on the outer circumference of the vibrating portion 1. Since the rollers 3 to 5 rotate in the direction of arrow A by this traveling wave, the paper sheet 40 that has been conveyed to the position of the roller 3 is sequentially conveyed along the guides 14 and 15 and sent to the confluence point 31. Paper 4 sent to confluence 31
0 is nipped by the conveyor belts 11 and 12, is conveyed toward the conveyance outlet 32, and is discharged to the outside (arrow D).

When the paper sheet 40 is conveyed in the reverse direction, that is, in the direction of returning to the gate 17, the conveyance outlet 32
When the sheet is discharged to the sheet, as shown in FIG. 3, when the tip of the sheet 40 reaches the position of the sensors 22 and 23 and the sensors 22 and 23 detect it, the sine wave signal for each of the electrode groups 2A to 2D is output. Stop the supply of. As a result, the generation of the traveling wave of the vibrating unit 1 is stopped, the rotation of the rollers 3 to 5 is stopped, and the conveyance of the sheet 40 is interrupted.

Subsequently, as shown in FIG. 4, with respect to the electrode groups 2A to 2D of the vibrating section 1, the electrode groups 2A: sinwt, 2B: -coswt, 2C: -sinwt, and 2C are respectively.
D: A sine wave signal whose phase is coswt is sequentially shifted by -90 degrees is given. As a result, a traveling wave indicated by an arrow F is generated on the outer periphery of the vibrating unit 1, and the rollers 3 to 5 rotate in the direction of the arrow B by the traveling wave to convey the paper sheet 40 toward the gate 17. The sheet 40 reaching the position of the gate 17 is the gate 1
7 is conveyed to the confluence point 31 through the gap between the guide 7 and the guide 16, is further sandwiched by the conveyor belts 11 and 12, is conveyed toward the conveyance outlet 32, and is discharged to the outside (arrow D).

At this time, the sensors 24 and 25 move the paper sheet 40.
When it is detected that the rear end has passed, after the supply of the sine wave signal to the electrode groups 2A to 2D is stopped, the electrode groups 2A to 2D are respectively brought to the same state as in FIG. 2A: sinwt, 2B: coswt, 2C: -sinwt, 2
D: -Provides a -coswt sine wave signal. As a result, a traveling wave indicated by an arrow E (see FIG. 2) is generated on the outer circumference of the vibrating unit 1, so that the rollers 3 to 5 rotate in the direction of the arrow A to prepare for the next sheet conveyance.

In the above-mentioned operation, when the number of rotations of the rollers 3 to 5 does not match the transport speed of other transport units, a paper jam may occur, but in order to avoid this, as shown in FIG. A rotation speed detection unit 19 is attached to the roller 3, and the control unit 20 controls a sine wave signal given to the electrode 2 via the driver 21 based on information about the rotation speed of the roller 3 detected by the rotation speed detection unit 19. I am trying. As a result, the number of rotations of the rollers 3 to 5 can be matched with the transport speed of the other transport unit, so that the occurrence of paper jam can be prevented.

In this way, according to the present embodiment, the paper sheet can be discharged to the same conveyance outlet while being conveyed in the forward direction and the reverse direction. Although it is possible to align the front and back sides of the paper sheets, it is possible to reduce the number of parts and downsize the device because no large-diameter roller, timing pulley, timing belt, or motor is used. Further, when reversing the transport direction of the sheet, it is not necessary to stop and re-drive a component having a large inertia, so that it is possible to respond at high speed and improve the processing capacity.

[0021]

As described above, the paper sheet conveying apparatus of the present invention has a circular ring shape and is formed of piezoelectric ceramic as a main member for conveying paper sheets, and has an inner peripheral surface or the like. Providing a vibrating section provided with a plurality of divided electrode groups, and applying a sinusoidal signal whose phase is sequentially shifted by the same angle to the vibrating section to advance in one circumferential direction By generating the waves, it is possible to reduce the number of parts and reduce the size of the device. Also,
Since it is not necessary to stop and re-drive a component having a large inertia when reversing the paper sheet conveyance direction, it is possible to respond at high speed and improve the processing capacity.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing an operating state of the embodiment of FIG.

FIG. 3 is a front view showing another operation state of the embodiment of FIG.

FIG. 4 is a front view showing still another operation state of the embodiment of FIG.

FIG. 5 is a front view showing an operating state of an example of a conventional sheet conveying apparatus.

FIG. 6 is a front view showing another operation state of the example of FIG.

FIG. 7 is a front view showing still another operation state of the example of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vibration part 2 Electrode 3-10 Roller 11/12 Conveying belt 13-16 Guide 17 Gate 18 Spring 19 Rotation speed detecting part 20 Control part 21 Driver 22-25 Sensor 30 Conveying inlet 31 Converging point 32 Conveying outlet 40 Paper leaf 50 Large Diameter roller 51/52 Timing pulley 53 Timing belt 54 Motor

Claims (2)

[Claims] 1. A ring-shaped vibrating portion formed of a piezoelectric ceramic and having an electrode composed of a plurality of electrode groups on an inner peripheral portion, and a plurality of rollers rotating in contact with the vibrating portion,
The electrode of the vibrating section has a plurality of sets of electrode groups that are groups of a plurality of electrode sections of the same number that are equally divided,
Each electrode part of each electrode group is sequentially arranged one by one,
A sinusoidal signal whose phase is sequentially shifted by the same angle in the same direction is input to each set of the electrode groups to generate bending vibration that proceeds in one direction in the circumferential direction of the vibrating portion. A paper sheet characterized in that the rotation direction of the roller is reversed by changing the direction in which the phase of the sine wave signal is shifted to thereby control the conveyance direction of the paper sheet to the forward direction or the reverse direction. Transport device. 2. A rotation speed detection unit for detecting the rotation speed of the roller, and a control for controlling the rotation speed of the roller by controlling a sine wave voltage applied to the electrode group of the vibration unit according to information from the rotation speed detection unit. The sheet conveying apparatus according to claim 1, further comprising: a section.