JPH05178486A - Paper sheet delivering device - Google Patents

Abstract

PURPOSE:To provide a paper sheet delivering device which effectively prevents the double feed of paper sheets without fine adjustment of a paper sheet peeling mechanism part. CONSTITUTION:A paper sheet delivering device is provided with a push roller 1 for pushing out paper sheets and a guide roller 5 disposed to the paper sheet push-out port part of the push roller 1 and suppressing the occurrence of a fluctuation in height based on the advancing direction of paper sheets through the energizing force of a differently equipped spring. A delivery guide 2 and an edge block 3, by which a gap is set to a value higher than the thickness of one paper sheet and lower than the thickness of two paper sheets according to paper sheets guided by the guide roller 5 for delivery, are provided.

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 device, and more particularly to a paper sheet feeding device for peeling one by one from a stacker containing a plurality of paper sheets and feeding it.

[0002]

2. Description of the Related Art Conventionally, a paper sheet feeding mechanism for separating and feeding out a single sheet from a stacker in which a plurality of paper sheets of this type are stored is provided with a constant amount of paper sheets pushed out by a push roller. The mechanism is such that it passes through between the pick roller and the gate roller, which are provided with a gap and has irregularities, to separate and feed out one by one.

[0003]

SUMMARY OF THE INVENTION In the conventional sheet feeding mechanism described above, the sheet pushed out by the push roller is passed between the pick roller and the gate roller which are provided with a gap and have a certain gap. By doing so, it was a mechanism to peel and feed each sheet one by one, so it is very difficult to set and adjust a certain gap between the pick roller and the gate roller. The reliability was low because multiple types could be fed at the same time (double feed) or even one sheet could not be fed (pick miss). Further, the manufacturing accuracy of the outer dimensions of the pick roller and the gate roller requires very high accuracy, and thus there is a defect that the manufacturing defect rate is high.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to improve the disadvantages of the conventional example, and in particular, to provide a sheet feeding device capable of effectively eliminating double feeding of sheets without finely adjusting the sheet peeling mechanism. The purpose is to provide.

[0005]

According to the present invention, a push roller for pushing out a paper sheet and a paper sheet ejecting opening portion of the push roller are urged by a spring separately provided in advance and the paper sheet is pushed. And a guide roller that suppresses the variation in height with respect to the traveling direction. Then, a feeding guide and an edge block for setting a gap that is larger than the thickness of one sheet and smaller than the thickness of two sheets corresponding to the sheets 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 An embodiment of the present invention will be described below with reference to FIGS. In the embodiment shown in FIGS. 1 to 5, the push roller 1 that pushes out the paper sheet 15 and the spring 7 that is arranged in advance at the paper sheet push-out opening portion of the push roller 1 and is separately equipped. It is provided with a guide roller 5 for suppressing the height variation of the paper sheet 15 in the traveling direction. Equipped with 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 sheets guided and fed by the guide roller 5. Has been done.

1 to 5, reference numeral 4 indicates a front guide, reference numeral 6 indicates a rotating shaft, and reference numeral 8 indicates a pulley with a built-in one-way clutch. Also,
Reference numeral 9 indicates a backup plate, reference numeral 10 indicates a motor, and reference numeral 11 indicates a tension spring. Further, reference numeral 12 is a guide shaft, reference numeral 13 is a linear bearing, reference numeral 14 is a belt, and reference numeral 16 is a conveying 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 the built-in one-way clutch [FIG. 2]. The pushed paper sheet 15 is conveyed along the feeding guide 2 by the guide roller 5 which is pressed by the tension spring 7 and is in contact with the feeding guide 2. For this reason, the height variation in the traveling direction is suppressed, and the space between the feeding guide 2 and the edge block 3 is accurately advanced [FIG. 3].

Next, the feeding guide 2 and the edge block 3
A gap larger than the thickness of one sheet 15 and smaller than the thickness of two sheets 15 is set between them, and the sheet 15 conveyed along the feeding guide 2 passes through this gap. As a result, even if there are a plurality of sheets 15 pushed out by the push roller 1, only the uppermost one sheet can pass through the gap, so that the sheet is completely separated [FIG. 4]. When the peeled paper sheets come off the push roller 1, they are conveyed by the conveyance roller 16 which rotates by a separate drive system. At this time, the push roller 1 does not rotate due to the action of the pulley 8 with the built-in one-way clutch, and the second sheet is not pushed out (FIG. 5). Further, the backup plate 9 includes the guide shaft 12 and the linear bearing 1.
It is guided in the vertical direction by 3 and is pressed upward by a tension spring 11 with a constant pressure. Therefore, the paper sheet 15 is always in contact with the push roller 1 with a constant pressure.

As described above, the push roller pushes out the paper sheet, and the guide roller pressed by the spring suppresses the fluctuation in the height direction when advancing in the traveling direction. By passing through the gap between the feeding guide and the edge block 3 in which a gap that is largely smaller than the thickness of two sheets is passed, it is possible to separate the sheets and feed them.

[0011]

As described above, according to the present invention, a paper sheet is pushed out by a push roller, and a guide roller pressed by a spring suppresses fluctuations in the height direction when advancing in the traveling direction. Since a gap larger than the thickness of one sheet and smaller than the thickness of two sheets is set, the gap between the feeding guide and the edge block is passed, the sheet is peeled into one sheet, and the sheet is fed out. Fine adjustment of the peeling mechanism is eliminated, and double feeding of paper sheets and picking mistakes can be made. This can significantly improve the reliability of the entire device, and does not require high accuracy in external dimensions. Therefore, it is possible to provide an unprecedented excellent sheet feeding device capable of reducing the manufacturing defect rate and reducing the cost.

[Brief description of drawings]

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

FIG. 2 is an explanatory view showing the operation of the push roller in FIG.

FIG. 3 is an explanatory diagram showing how the paper sheets in FIG. 1 are conveyed along a guide roller.

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

FIG. 5 is an explanatory diagram showing a state where the paper sheets in FIG. 1 are conveyed by a conveying roller.

[Explanation of symbols]

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

Claims (1)

[Claims] 1. A push roller for pushing out paper sheets, and a push roller disposed at a paper sheet pushing-out opening portion of the push roller,
A guide roller that is biased by a spring that is separately provided in advance to suppress the height fluctuation of the paper sheet in the traveling direction of the paper sheet, and the paper sheet corresponding to the paper sheet that is guided and sent by the guide roller. A sheet feeding device comprising a feeding guide and an edge block for setting a gap larger than the thickness of one leaf and smaller than the thickness of two sheets.