JPH06100185A - Paper sheet feeding mechanism - Google Patents

Abstract

PURPOSE:To feed a plurality of paper sheets stored in a stacker by using a separating mechanism without any fine adjustment part. CONSTITUTION:The stacked paper is pushed out by a push roller 1. A separating mechanism can feed the paper without any fine adjustment part by passing the paper through the contact point between a pick roller 2 and a friction plate 4 which is pushingly pressed by a spring 5 in the direction of the pick roller 2 and has a rubber part with high friction coefficient, and thereby separating the paper sheets one by one, and feeding the separated paper sheets.

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 mechanism, and more particularly to a paper sheet feeding mechanism for peeling one by one from a stacker accommodating a plurality of paper sheets.

[0002]

2. Description of the Related Art Conventionally, a paper sheet feeding mechanism for separating and feeding out a sheet of paper of this kind from a stacker accommodating a plurality of sheets of paper has a constant amount of paper sheets pushed out by a push roller. By passing between the pick roller and the gate roller, which are provided with the gaps and which have irregularities, the mechanism is such that the sheets are separated and fed out one by one.

[0003]

SUMMARY OF THE INVENTION The above-mentioned conventional paper sheet feeding mechanism is provided between the pick roller and the gate roller, which are provided with a certain gap between the paper sheets pushed out by the push roller and have a certain gap. It is very difficult to set and adjust a certain gap between the pick roller and the gate roller because the mechanism that separates and feeds out one by one by passing the The reliability is low because multiple types of products may be delivered at the same time (double feed), or even one product may not be delivered (pick miss).

Further, the manufacturing accuracy of the outer dimensions of the pick roller and the gate roller requires very high accuracy, and therefore, there is a disadvantage that the manufacturing defect rate is high.

[0005]

A paper sheet feeding mechanism according to the present invention is a feeding mechanism including a push roller, a pick roller and a friction plate, in which stacked sheets are pushed out by the push roller. , Passing the contact point between the pick roller and the friction plate that is pressed in the direction of the pick roller and held by the rotation support shaft to separate the pick roller into one sheet, and to feed out the paper sheets one by one. Characterize.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.
In this embodiment, the push roller 1, the pick roller 2,
Backup plate 3, friction plate 4, spring 5, guide 6, shaft 7, linear ball bearing 8, spring 9, motor 10, conveyance roller 1
1, a pulley 12 with a built-in one-way clutch, a pulley 13 with a built-in one-way clutch, a timing belt 14, a timing belt 15, a pulley 16, a rotation support shaft 17, and a delivery end detection sensor 18.

Next, the operation of this embodiment will be described with reference to FIGS.
This will be described with reference to FIG.

As shown in FIG. 2, first, the shaft 7 and the linear ball bearing 8 are vertically guided and on the backup plate 3 which is pressed upward by the spring 9, and the front is guided by the guide 6. The guided paper sheets 19 are stacked.

As shown in FIG. 3, next, the motor 10 is started to rotate the push roller 1 via the timing belt 15 and the pulley 12 with the built-in one-way clutch, and the top sheet of the stacked sheets 19 is stacked. Push out leaves.

As shown in FIG. 4, the extruded paper sheet 1
A pick roller 2 that is driven by a motor 10 to rotate via a timing belt 14 and a pulley 13 with a built-in one-way clutch and a pick roller 9 are rotatably supported by a support shaft 17 and picked by a spring 5. Laura 2
It is conveyed between the friction plates 4 pressed to the side.

Here, as shown in FIG. 5, even when a plurality of paper sheets are pushed out, the uppermost one in contact with the pick roller 2 is continuously conveyed by the frictional force of the pick roller 2, and the second sheet is conveyed. Subsequent paper sheets remain due to the rubber portion 20 of the friction plate 4 having a high friction coefficient.

Further, one sheet 19 passing through the peeling point, which is the contact point between the pick roller 2 and the friction plate 4, reaches the conveying roller 11 which is rotated by a drive system (not shown) other than the motor 10. The transport of the paper sheet 19 is continued by the transport roller 11.

Next, as shown in FIG. 6, when the feeding completion detection sensor 18 detects the peeled paper sheet 19, the drive of the motor 10 is stopped. After that, the paper sheet 19 is conveyed only by the conveying roller 11. However, even when the rear end of the paper sheet 19 passes under the push roller 1, the action of the one-way built-in pulley 12 coaxial with the push roller 1 causes the paper sheet 19 to be conveyed. ,
The push roller 1 is rotatable and does not become a transport load.

As shown in FIG. 7, since the push roller 1 does not rotate after the trailing edge has passed below the push roller 1, the next sheet is not fed out, and is further contacted with the pick roller 2. During conveyance, the pick roller 2 is rotatable by the action of the pulley 13 with a built-in one-way clutch, and does not become a conveyance load.

As shown in FIG. 8, after the trailing edge of the paper sheet 19 has passed below the pick roller 2, the pick roller 2 does not rotate and the next paper sheet is not fed out.

As described above, the stacked sheets are pushed out by the push roller driven via the pulley with the built-in one-way clutch, and the pick roller is rotated from the push roller via the pulley with the built-in one-way clutch. Only one sheet can be fed out by passing through a contact point with a friction plate which is pressed by the spring in the direction of the pick roller and has a rubber portion having a high friction coefficient and which is held by a rotary support shaft.

[0018]

As described above, according to the present invention, stacked paper sheets are pushed out by the push roller, pressed by the spring in the direction of the pick roller and the pick roller, and held by the rotary support shaft. By passing through the contact point with the friction plate and peeling it into one sheet and feeding out the paper sheets, fine adjustment of the peeling mechanism part is eliminated, and double feeding of paper sheets and picking mistakes are eliminated and reliability is improved. Can be made. Further, since the external dimensions do not require high precision, the manufacturing defect rate can be reduced and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing a state of sheets stacked by a backup plate and a guide in one embodiment of the present invention.

FIG. 3 is a diagram showing a state in which a push roller pushes out paper sheets according to an embodiment of the present invention.

FIG. 4 is a diagram showing a state in which a paper sheet enters between a pick roller and a friction plate in an embodiment of the present invention.

FIG. 5 is a diagram showing how sheets are peeled off by a pick roller and a friction plate in an embodiment of the present invention.

FIG. 6 is a diagram showing a state in which a paper sheet is conveyed by a conveyance roller according to an embodiment of the present invention, is detected by a feeding completion detection sensor, and a motor is stopped.

FIG. 7 is a diagram showing a state in which the trailing edge of the paper sheet is hooked only on the pick roller in the embodiment of the present invention.

FIG. 8 is a diagram showing a state where feeding of only one sheet has been completed in one embodiment of the present invention.

[Explanation of symbols]

 1 Push roller 2 Pick roller 3 Backup plate 4 Friction plate 5 Spring 6 Guide 7 Shaft 8 Linear bearing 9 Spring 10 Motor 11 Transport roller 12 One-way clutch built-in pulley 13 One-way clutch 14 Timing belt built-in pulley 15 Timing belt 16 Pulley 17 Rotation support Axis 18 Feeding end detection sensor 19 Paper sheets

Claims (1)

[Claims] 1. A feeding mechanism including a push roller, a pick roller, and a friction plate, wherein stacked paper sheets are extruded by the push roller, and are pressed in the pick roller and the pick roller direction, and A paper sheet feeding mechanism, characterized in that the paper sheet is fed out sheet by sheet by passing through a contact point with the friction plate held by a rotary spindle and separating the sheet into one sheet.