JPS6365571B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] Regarding a sheet paper feeding device such as an optical reading device that optically reads information recorded on a sheet paper, the present invention applies a feeding force to the sheet paper in the feeding direction, and For the purpose of reliably feeding sheet paper one by one, a sheet paper feed roller is provided with a plurality of roller units arranged side by side on a rotating shaft, and a sheet paper feed roller is provided at a predetermined interval from each of the feed rollers. A gate mechanism 4 and a paper pressing mechanism are provided, and the sheet paper is
In a configuration in which sheets are fed one by one, a plurality of V-shaped notches are provided on the outer peripheral surface of each roller portion of the feed roller at a predetermined dividing angle and in mutually different phase relationships.

[Industrial application field]

The present invention relates to a sheet paper feeding device such as an optical reader that optically reads information recorded on a sheet paper.

In particular, there is a need for a sheet feeding device that can reliably separate sheets one by one and feed them to an optical reading section.

[Conventional technology]

An optical reading device is known as a device that optically reads information recorded on a sheet of paper and inputs the information into an electronic computer. This optical reading device is equipped with a device that feeds out the sheet paper from a hopper on which the sheet paper is placed by rotating a pick-up roller, separates the sheet paper one by one using a gate mechanism and a feed roller, and feeds the sheet paper to the reading section. are doing.

To explain this sheet paper feeding device in more detail, it is a gate mechanism placed at a constant distance from the outer periphery of the feed roller in order to separate and feed the sheets one by one using the feed roller. and a mechanism for pressing the sheet paper against the feed roller. In addition, conventional feed rollers have a rotating shaft with a plurality of roller parts arranged in parallel at predetermined intervals in contact with the sheet paper, and the outer periphery of the roller part is generally made of synthetic rubber to increase the frictional force between the roller parts and the sheet paper. has been done.

[Problem that the invention seeks to solve]

However, in conventional sheet paper feeding devices, the feeding force of the sheet paper due to the friction of the roller part depends on the sheet paper pressing force of the hopper part, and it is not possible to obtain sufficient force to feed the sheet paper one by one. There is a problem that is causing a hindrance.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a sheet paper feeding device that applies a feeding force to the sheet paper in the feeding direction and can reliably feed the sheets one by one. .

[Means for solving problems]

In order to achieve the above object, as shown in FIGS. 1a and 1b, a plurality of V-shaped notches 6-
1 are provided at predetermined division angles and in mutually different phase relationships.

[Effect]

According to the sheet paper feeding device of the present invention, when feeding the sheet paper 1 as shown in FIG. The other roller part 61 faces the leading edge of the sheet 1, contacts the sheet 1, and forms a certain gap with the gate mechanism 4 to gate control the second sheet 1. I will do it. Then, when the feed roller 6 rotates, a V-shaped notch 6 facing the leading edge of the paper is formed.
The corner portion of -1 applies a starting force in the feeding direction to the sheet paper 1, and assists the feeding by the frictional force of the roller portion 61 in contact with the sheet paper 1. As a result, the sheet paper 1 can be reliably separated and fed one by one.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be explained in detail with reference to the drawings.

FIG. 1a is a side view of the main parts of an embodiment of the sheet feeding device according to the present invention, FIG. 1b is a schematic front view of the feed roller shown in FIG. 1a, and FIG. 2 is a gate of the present invention. It is a perspective view for explaining a function.

In the figure, 1 is a sheet paper, 2 is a hopper having a paper pressing part 2-1, 3 is a pick-up roller, 4 is a gate fitting, 5 is a presser pad, and 6 is a plurality of notches 6-1 on the outer periphery of the roller part 61. The feed rollers formed with the above are shown respectively.

The sheet paper 1 is placed on the hopper 2 and is pressed against the pick-up roller 3 by the pressure of the paper pressing section 2-1. When the optical reading device operates, the pick-up roller 3 rotates in the direction of the arrow, and the sheet paper 1 is fed out to the feed roller 6 side by the frictional force between the pick-up roller 3 and the sheet paper 1 in contact with it. At this time, the next sheet of paper is also fed out to the feed roller 6 side with a slight delay due to the frictional force with the preceding sheet of paper 1, but this extra sheet of paper is transferred between the gate fitting 4 and the outer peripheral surface of the roller portion 61 of the feed roller 6. regulated by the gap between Therefore, only one sheet of the front sheet is sent between the presser pad 5 and the feed roller 6, and the sheet 1 is sent to a reading section (not shown) by both members.

As shown in FIG. 1b, this feed roller 6 has a plurality of roller parts 61 whose outer peripheries are made of synthetic rubber formed around a rotating shaft at predetermined intervals in order to apply a feeding force to the sheet paper in the feeding direction. Moreover, each roller part 6
1, a plurality of V-shaped notches 6-1 are formed in the width direction at predetermined dividing angles. The positions of the notches 6-1 are different from each other in phase on the outer peripheral surface of each roller portion 61.

As a result, when feeding the sheet paper 1, as shown in FIG. , other seat portions 61
is in contact with the paper. Therefore, in this state, as before, the feed roller 6 forms a certain gap between the roller portion 61 in contact with the gate mechanism 4 and gate-regulates sheets other than the sheet (second sheet). It turns out. When the feed roller 6 rotates from this state, the corner of the V-shaped notch 6-1, which was in a state facing the leading edge of the paper, applies a starting force in the rotational direction to the sheet paper, and the roller in the contact state The feeding by the frictional force of the portion 61 is assisted. In this way, the sheet paper 1 can be reliably separated and fed one by one.

〔Effect of the invention〕

As described above in detail, the sheet paper feeding device of the present invention is capable of reliably feeding sheets one by one by applying a driving force to the sheet paper in the feeding direction, and is capable of reliably feeding sheets one by one. It has many advantages when applied to

[Brief explanation of drawings]

FIG. 1a is a side view of the main parts of an embodiment of the sheet feeding device according to the present invention, FIG. 1b is a schematic front view of the feed roller shown in FIG. 1a, and FIG. 2 is a gate of the present invention. It is a perspective view for explaining a function. In the figure, 1 is a sheet paper, 4 is a gate fitting, 5 is a presser pad, 6 is a feed roller, 61 is a roller portion, and 6-1 is a notch.

Claims (1)

[Claims] 1. A sheet paper feed roller 6 including a plurality of roller units 61 arranged side by side on a rotating shaft, and a gate mechanism 4 and a paper pressing device each provided at a predetermined distance from the feed roller. A plurality of V-shaped notches 6-1 are formed on the outer peripheral surface of each roller portion 61 of the feed roller 6 at a predetermined dividing angle. , and are provided in mutually different phase relationships.