JP2655463B2 - Paper feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet feeding apparatus and, more particularly, to a paper sheet feeding apparatus which peels and feeds a sheet one by one from a stacker in which a plurality of sheets are stored.

[0002]

2. Description of the Related Art Heretofore, a paper sheet feeding mechanism that separates and feeds one sheet from a stacker in which a plurality of sheets of this type is stored has been used to hold a sheet pushed by a push roller in a fixed manner. By passing between a pick roller and a gate roller having an unevenness provided with a gap, the sheet is peeled off one by one and fed out.

[0003]

In the above-described conventional paper sheet feeding mechanism, the paper sheet extruded by a push roller passes between a pick roller having a certain gap and an uneven pick roller and a gate roller. This makes it very difficult to set and adjust a certain gap between the pick roller and gate roller, and if the setting and adjustment are not appropriate, paper sheets will be lost. The reliability was low because multiple types could be fed out at the same time (double feeding) or even one sheet could not be fed out (picking mistake). Further, the manufacturing accuracy of the outer dimensions of the pick roller and the gate roller requires extremely high accuracy, and thus there is a disadvantage that the manufacturing defect rate is high.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a sheet feeding apparatus which can solve the disadvantages of the prior art and, in particular, can effectively eliminate double feeding of sheets without fine adjustment of a sheet peeling mechanism. Its purpose is to provide.

[0005]

According to the present invention, there is provided a push roller for pushing out a paper sheet, and a paper sheet which is disposed at a paper sheet pushing-out portion of the push roller and is urged by a separately provided spring. And a guide roller for suppressing a height variation in the traveling direction of the vehicle. A feeding guide and an edge block for setting a gap larger than the thickness of one sheet and smaller than the thickness of two sheets corresponding to the sheet guided and fed by the guide roller are provided. , Is adopted. This aims to achieve the above-mentioned object.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The embodiment shown in FIGS. 1 to 5 has a push roller 1 for pushing out a sheet 15 and a push roller 1 which is disposed at a sheet pushing-out opening portion of the push roller 1 and is urged by a spring 7 provided separately in advance. A guide roller 5 for suppressing a height variation in the traveling direction of the paper sheet 15 is provided. A feeding guide 2 and an edge block 3 for setting a gap larger than the thickness of one sheet and smaller than the thickness of two sheets corresponding to the sheet guided and fed by the guide roller 5 are provided. Have been.

In FIGS. 1 to 5, reference numeral 4 denotes a front guide, reference numeral 6 denotes a rotating shaft, and reference numeral 8 denotes a pulley with a built-in one-way clutch. Also,
Reference numeral 9 denotes a backup plate, reference numeral 10 denotes a motor, and reference numeral 11 denotes a tension spring. Further, reference numeral 12 indicates a guide shaft, reference numeral 13 indicates a linear bearing, reference numeral 14 indicates a belt, and reference numeral 16 indicates a transport roller.

Next, the operation of the above embodiment will be described with reference to FIGS. First, the motor 10 is started, and the upper end of the paper sheet 15 is pushed out by the push roller 1 via the belt 14 and the pulley 8 with a built-in one-way clutch [FIG. 2]. The extruded paper sheet 15 is conveyed along the pay-out guide 2 by the guide roller 5 which is pressed by and in contact with the pay-out guide 2 by the tension spring 7. For this reason, height fluctuations in the traveling direction are suppressed, and the robot accurately advances between the feeding guide 2 and the edge block 3 (FIG. 3).

Next, the feeding guide 2 and the edge block 3
A gap larger than the thickness of one paper sheet 15 and smaller than the thickness of two paper sheets is set between the paper sheets 15, and the paper sheet 15 conveyed along the feeding guide 2 is passed through this gap. As a result, even if there are a plurality of sheets 15 extruded by the push roller 1, only the uppermost sheet can pass through the gap, so that the sheet 15 is completely separated (FIG. 4). When the peeled sheet comes off the push roller 1, the sheet is transported by the transport roller 16 rotating by another drive system. At this time, the push roller 1 does not rotate due to the action of the pulley 8 with a built-in one-way clutch, and the second sheet is not pushed out (FIG. 5). The backup plate 9 includes the guide shaft 12 and the linear bearing 1.
3 and is pressed upward by a tension spring 11 at a constant pressure. For this reason, the paper sheet 15 is always in contact with the push roller 1 with a certain pressure.

As described above, the paper sheet is pushed out by the push roller, and the fluctuation in the height direction when the sheet is advanced in the advancing direction is suppressed by the guide roller pressed by the spring. By passing the paper through the gap between the payout guide and the edge block 3 in which a gap smaller than the thickness of two sheets is set, the papers can be peeled off and the papers can be fed out.

[0011]

As described above, according to the present invention, a sheet is pushed out by a push roller, and a variation in the height direction when the sheet is advanced in a traveling direction is suppressed by a guide roller pressed by a spring. Since the gap was larger than the thickness of one sheet and smaller than the thickness of two sheets, it passed through the gap between the feeding guide and the edge block and peeled off to one sheet to feed out the paper sheets, Fine adjustment of the peeling mechanism is eliminated, and furthermore, double feeding of paper sheets and picking mistakes can be made, thereby significantly improving the reliability of the entire apparatus and not requiring high precision in external dimensions. Therefore, it is possible to provide an unprecedented excellent paper sheet feeding device capable of reducing the manufacturing defect rate and reducing the cost.

[Brief description of the drawings]

FIG. 1 is a partially omitted perspective view showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an operation of a push roller in FIG.

FIG. 3 is an explanatory diagram showing a state in which paper sheets in FIG. 1 are conveyed along guide rollers.

FIG. 4 is an explanatory diagram showing an operation of an edge block in FIG. 1;

FIG. 5 is an explanatory diagram illustrating a state in which paper sheets in FIG. 1 are transported by transport rollers.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Push roller 2 Feeding guide 3 Edge block 4 Front guide 5 Guide roller 7 Tension spring

Claims (1)

(57) [Claims] 1. A push roller for pushing out paper sheets, and a push roller disposed at a paper sheet ejection port of the push roller.
A guide roller which is urged by a separately provided spring to suppress the height of the paper sheet from fluctuating in the advancing direction of the paper sheet. The paper sheet is guided by the guide roller and sent out in response to the paper sheet. A sheet feeding device comprising a feeding guide for setting a gap larger than the thickness of one leaf and smaller than the thickness of two leaves, and an edge block.