JPH08198470A - Paper sheet supplying device - Google Patents

Abstract

PURPOSE: To facilitate the rough adjustment and fine adjustment of a space between rollers by fixing one end of a lateral laminated piezoelectric ceramics to a support plate to be turned in the condition that it holds a peeling roller, and fitting a vertical laminated piezoelectric ceramics to the other end thereof, and controlling electrifying thereof. CONSTITUTION: At the time of adjusting a space between rollers of a paper sheet supplying device, a fixed screw 24 is loosened so that a support plate 8 is fixed to a base 20 by the only force of a spring 28. At the time of rough adjustment for narrowing a space between rollers, current is applied to a vertical laminated piezoelectric ceramic 22 for extension, and the vertical laminated piezoelectric ceramics 22 is fixed to a moving guide 27. Next, current is applied so as to extend a lateral laminated piezoelectric ceramics 21. The support plate 8 is turned counterclockwise around a shaft 23, and the space between rollers is narrowed. Continuously, application of the current to the vertical laminated piezoelectric ceramics 22 is stopped so that it can freely move, and application of the current to the lateral laminated piezoelectric ceramic 21 is stopped so that it is shrunken.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet feeder for stacking a plurality of paper sheets and mounting them, and feeding them while separating them one by one.

[0002]

2. Description of the Related Art FIG. 3 is a side view showing an example of a conventional paper sheet feeding apparatus.

[0003] A conventional paper sheet supply apparatus in which a plurality of paper sheets are stacked and mounted, and supplied while separating the individual sheets is shown in FIG.
It has a configuration as shown in.

That is, a plurality of paper sheets 30 stacked and mounted on the table 6 in an upright position are pressed against the guide 5 by the force of the backup spring 17 via the backup plate 16. The feed roller 1 is in contact with the foremost sheet of the sheet 30, and the sheet 30 is fed downward by rotating in the direction of arrow A. A paper feed roller 2 is provided below the delivery roller 1, and a peeling roller 3 is provided opposite to the paper feed roller 2. Between the paper feeding roller 2 and the peeling roller 3, there is provided a gap adjusted to be not less than the thickness of one sheet 30 and not more than the thickness of two sheets 30. Further, a roller 4 is provided below the peeling roller 3, and the roller 4 is in contact with the sheet feeding roller 2.

[0005] Pulleys 12 and 13 are mounted on the shafts of the feeding roller 1 and the paper feeding roller 2, respectively.
A timing belt 15 wound around a pulley 11 mounted on a shaft of the motor 10 is mounted on these pulleys. The timing belt 15 is provided between the motor 10 and the paper feed roller 2. The pulley 14 is tensioned. Accordingly, the feed roller 1 and the paper feed roller 2 rotate in the directions of the arrows A and B, respectively, when the motor 10 rotates in the direction of the arrow E.

[0006] The peeling roller 3 is held at one end of an L-shaped support plate 51 that rotates about a shaft 52.
A one-way clutch 7 that rotates only in the direction is attached. A screw hole is provided at the other end of the support plate 51, and an adjusting screw 54 that holds the shaft 52 and is screwed to the base 53 is screwed into this screw hole. A nut 55 is provided at a screwing portion between the screw hole of the support plate 51 and the adjusting screw 54, and a fixing nut 56 is provided at a screwing portion between the base 53 and the adjusting screw 54.
The pitch of the screw holes of the support plate 51 is different from the pitch of the screw holes of the base 53 (for example, the pitch of the screw holes of the support plate 51 is 0.7 mm, and the pitch of the screw holes of the base 53 is 0.8 mm). A spring 57 is mounted between the support plate 51 and the base 53, and a force acts in a direction in which the support plate 51 and the base 53 approach each other.

The paper sheet 30 delivered by the rotation of the delivery roller 1 in the direction of arrow A passes through the conveyance path between the guide 5 and the tip of the table 6 when the sheet feeding roller 2 rotates in the direction of arrow B, The sheet is nipped by the sheet feeding roller 2 and the roller 4 and conveyed toward the outlet 40. At this time, when the feeding roller 1 feeds two sheets 30 at the same time, the peeling roller 3 separates the two sheets 30. The feeding of the paper sheet of the eye is prevented, and only the frontmost paper sheet is conveyed toward the outlet 40.

If the gap between the paper feed roller 2 and the peeling roller 3 (roller gap) is not maintained at an appropriate value, two sheets of paper may be overlapped and fed out (double feed), or paper jam may occur. Therefore, it is important to adjust the roller gap to an accurate value. For this reason, in the example of FIG. 3, the roller gap is adjusted by the adjusting screw 54.

That is, the nut 55 and the fixed nut 5
When the adjusting screw 54 is rotated by loosening the screw 6, the distance between the support plate 51 and the base 53 changes due to the difference in pitch between the screw holes of the support plate 51 and the base 53.
The roller gap can be adjusted. When the adjustment of the roller gap is completed, the nut 55 and the fixing nut 56 are tightened to fix the adjusting screw 54.

[0010]

In the conventional paper sheet feeding apparatus as described above, since the adjustment of the roller gap is performed by the adjusting screw, fine adjustment is difficult due to the play between the adjusting screw and the screw hole. There is a problem that is. It also has a drawback that it is not possible to make a rough adjustment to obtain a rough position.

[0011]

According to the present invention, there is provided a paper sheet supply apparatus comprising: a table for mounting a plurality of stacked paper sheets; a backup plate for pressing the paper sheets mounted on the table from behind; A backup spring that applies pressure to the backup plate, a guide that holds the paper sheet mounted on the table and conveys the paper sheet between an extension of the table at an extension of a lower end portion, A feeding roller that performs a feeding operation by contacting the frontmost sheet of the sheet mounted on the table, a feeding roller that conveys the sheet fed by the feeding roller, and a contact with the feeding roller. A roller for holding the paper sheet, a motor, a pulley and a timing belt for driving the feed roller and the paper feed roller, and a predetermined belt facing the paper feed roller. In a paper sheet feeding device provided with a peeling roller having a one-way clutch which holds a gap and rotates only in a fixed direction, a supporting plate which holds the peeling roller and rotates, and one end of which is fixed to the supporting plate And the longitudinal laminated piezoelectric ceramics attached to the other end of the transverse laminated piezoelectric ceramics, and the longitudinal laminated piezoelectric ceramics are fixed when current is applied to the longitudinal laminated piezoelectric ceramics. It is provided with a moving guide and a base on which a fixing screw for holding the rotating shaft of the supporting plate and the moving guide and fixing the supporting plate is mounted, and particularly, the supporting plate is pressed against the base. It has a spring, and the pressing force of the spring is applied to the longitudinal laminated piezoelectric ceramics to fix it to the moving guide. It is obtained by less than the fixed force when the.

[0012]

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

FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is a plan view showing details of the vicinity of a peeling roller in the embodiment of FIG.

The embodiment shown in FIG. 1 is a mechanism for stacking and holding paper sheets 30, ie, a guide 5 and a table 6, a backup plate 16 and a backup spring 17, and a mechanism for feeding and transporting the paper sheets 30. That is,
Feeding roller 1, feeding roller 2 and peeling roller 3
And roller 4, motor 10, and pulleys 12-1
4 and the timing belt 15 have the same configurations and operations as the corresponding portions of the conventional example of FIG. 3, but a mechanism for adjusting the gap between the paper feed roller 2 and the peeling roller 3, that is, the roller gap ( The structure and operation of the roller gap adjusting mechanism) are different from those of the conventional example shown in FIG.

As shown in FIGS. 1 and 2, the pair of peeling rollers 3 is attached to a shaft held at the tip of a pair of flat plate-like supporting plates 8 that rotate about a shaft 23. A pair of one-way clutches 7 for rotating the peeling roller 3 only in the direction of arrow C are mounted on the shaft of the peeling roller 3. The lower end of the support plate 8 is rotatably supported by a shaft 23 provided on the base 20. At the center of the support plate 8, the tip of a pair of laterally laminated piezoelectric ceramics 21 that expand and contract in the left-right direction of FIG.
At the rear end, a central portion of a pair of vertically laminated piezoelectric ceramics 22 which is vertically expandable and contractible in FIG. 1 is attached. The vertically laminated piezoelectric ceramics 22 are fitted inside corresponding moving guides 27, respectively. The width of the inner surface of the moving guide 27 is such that the vertical laminated piezoelectric ceramics 22 can move freely in the moving guide 27 when no current is applied to the vertical laminated piezoelectric ceramics 22, When a current is applied, the vertical laminated piezoelectric ceramics 22 are fixed to the moving guide 27. The base 20 also has a pair of fixing screws 2 for fixing the support plate 8.
4 are provided.

As shown in FIG. 2, the shaft 23 is provided with a pair of springs 28 for pressing the corresponding support plate 8 toward the base 20 (arrows F and G). For this reason, the rotational movement of the support plate 8 is regulated by the frictional force with the base 20. This frictional force is generated by moving guide 27 when current is applied to longitudinally laminated piezoelectric ceramics 22.
It is set by the spring 28 so as to be smaller than the fixing force of.

The adjustment of the gap between the rollers of the paper sheet feeding apparatus constructed as described above is performed as follows.

First, the fixing screw 24 is loosened so that the support plate 8 is fixed to the base 20 only by the force of the spring 28.

When a rough adjustment for roughly adjusting the gap between the rollers is to be performed, and when it is desired to narrow the gap between the rollers, first, a current is applied to the vertically laminated piezoelectric ceramics 22 to extend them, and the longitudinally laminated piezoelectric ceramics 22 are expanded. Is fixed to the moving guide 27. Next, a current is applied so as to extend the laterally laminated piezoelectric ceramics 21. At this time, since the frictional force between the support plate 8 and the base 20 is smaller than the fixing force of the vertically laminated piezoelectric ceramics 22 by the movement guide 27, the support plate 8 rotates counterclockwise about the shaft 23. However, the roller gap becomes a little smaller. Next, the application of the current to the vertical laminated piezoelectric ceramics 22 is stopped to allow the vertical laminated piezoelectric ceramics 22 to move freely, and further, the application of the current to the horizontal laminated piezoelectric ceramics 21 is stopped and the horizontal laminated piezoelectric ceramics 21 is stopped. To shrink. By repeating the above operation an appropriate number of times, coarse adjustment for reducing the roller gap can be performed.

To make the roller gap wide in the case of performing the coarse adjustment, first, the longitudinally laminated piezoelectric ceramics 22
A vertical current laminated piezoelectric ceramics 22 is fixed to a moving guide 27 by applying a current to the substrate and extending the same. Next, an electric current is applied so as to shrink the laterally laminated piezoelectric ceramics 21. As a result, the support plate 8 rotates clockwise about the shaft 23, and the roller gap slightly increases. By performing the same operation as described above, coarse adjustment for widening the roller gap can be performed.

When performing fine adjustment for finely adjusting the roller gap, first, the longitudinally laminated piezoelectric ceramics 2
The longitudinally laminated piezoelectric ceramics 22 is fixed to the moving guide 27 by applying an electric current to 2 and extending the same. Next, the laterally laminated piezoelectric ceramics 21 is expanded and contracted by applying a current according to the amount of fine movement of the roller gap. This allows the support plate 8 to rotate by a small amount counterclockwise or clockwise about the shaft 23, so that the roller gap can be finely adjusted. After the support plate 8 is rotated by a desired amount, the application of the current to the longitudinal laminated piezoelectric ceramics 22 is stopped, the application of the current to the lateral laminated piezoelectric ceramics 21 is stopped, and then the fixing screw 24 is tightened. The support plate 8 is fixed to the base 20.

By controlling the application of the electric current to the longitudinally laminated piezoelectric ceramics 22 and the laterally laminated piezoelectric ceramics 21 in this manner, it is possible to easily perform the rough adjustment and the fine adjustment of the roller gap.

[0023]

As described above, according to the paper sheet feeder of the present invention, one end of the laterally laminated piezoelectric ceramics is fixed to the supporting plate which holds and peels the peeling roller so that the laterally laminated piezoelectric ceramics are Attach the longitudinally laminated piezoelectric ceramics to the other end so that when the current is applied to the longitudinally laminated piezoelectric ceramics, the longitudinally laminated piezoelectric ceramics are fixed to the moving guide. By controlling the application of, there is an effect that it is possible to easily perform rough adjustment and fine adjustment of the roller gap.

[Brief description of drawings]

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

FIG. 2 is a plan view showing details of the vicinity of a peeling roller of the embodiment of FIG. 1;

FIG. 3 is a side view showing an example of a conventional sheet feeding apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 feeding roller 2 feed roller 3 peeling roller 4 roller 5 guide 6 table 7 one-way clutch 8.51 support plate 10 motor 11 to 14 pulley 15 timing belt 16 backup plate 17 backup spring 20/53 base 21 laterally laminated piezoelectric ceramics 22 Longitudinal laminated piezoelectric ceramics 23 ・ 52 Shaft 24 Fixing screw 27 Movement guide 28 ・ 57 Spring 30 Paper leaf 40 Outlet 54 Adjusting screw 55 Nut 56 Fixing nut

Claims (2)

[Claims] 1. A table for mounting a plurality of stacked sheets, a backup plate for pressing the sheets mounted on the table from behind, a backup spring for applying pressure to the backup plate, and A guide that holds the paper sheet mounted on the table and conveys the paper sheet between the extension portion of the table and the extension portion of the lower end portion,
A feeding roller that performs a feeding operation in contact with a foremost sheet of the sheet mounted on the table, a sheet feeding roller that conveys the sheet fed by the feeding roller, and the sheet feeding roller. A roller for contacting and pinching the sheet, a motor, a pulley, and a timing belt for driving the feed roller and the paper feed roller; and a fixed belt disposed to face the paper feed roller with a predetermined gap therebetween. A sheet supply device including a peeling roller having a one-way clutch that rotates only in the direction, a support plate that rotates while holding the peeling roller, a laterally laminated piezoelectric ceramics having one end fixed to the support plate, A vertical laminated piezoelectric ceramic attached to the other end of the horizontal laminated piezoelectric ceramic; A moving guide for fixing the longitudinally laminated piezoelectric ceramics when a flow is applied, and a base equipped with a fixing screw for holding the rotation shaft of the supporting plate and the moving guide and fixing the supporting plate. Characteristic paper sheet feeder. 2. A spring for pressing the support plate against the base is provided, and the pressing force of the spring is set to be smaller than the fixing force when the electric current is applied to the longitudinal laminated piezoelectric ceramics to fix it to the moving guide. The paper sheet feeder according to claim 1.