JPH0423868Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention accurately separates one paper sheet from a stack of paper sheets.
This invention relates to a paper sheet feeding device for separating and feeding paper sheets one by one.

[Conventional technology]

Accurately separate paper sheets from stacked paper sheets
A number of proposals have been made for separating and dispensing sheets one by one, and one of them is the one shown in Japanese Patent Application Laid-open No. 115072/1983. That is, a belt that contacts the sheets being fed out and is driven in a direction opposite to the direction in which the sheets are fed out separates the sheets that are about to be fed out overlapping each other into sheets one by one.

[Problem that the invention attempts to solve]

However, since the paper sheet feeding device described above has only one separation point, if separation is not possible at one time, the sheets will be fed out in an overlapping state, and then This has caused paper sheet conveyance jams or misjudgment of paper sheets. Furthermore, as a measure to prevent overlapping paper sheets from being fed out, it is conceivable to provide a plurality of separating means in a continuous state, but this may lead to an increase in the size of the apparatus.

An object of the present invention is to provide a compact paper sheet feeding device that can prevent overlapping of fed sheets and improve the reliability of the device.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention provides a mechanism for dispensing paper sheets by facing one of a plurality of grooves provided in the circumferential direction of a dispensing roller for dispensing paper sheets, so that a part of the circumferential surface intersects with the outer circumferential surface of the dispensing roller. a separation roller that is driven in a direction opposite to the direction of the feed roller; and a separation roller that faces one of the plurality of grooves of the feed roller and extends from the separation roller side to the rear side in the feed direction, and a part of the circumferential surface is connected to the feed roller. The separating belt intersects with the outer circumferential surface of the feeding roller at a position other than the position where it intersects with the separating roller, and is driven in a direction opposite to the feeding direction.

[Effect]

With the above configuration, the paper sheets are first separated by the separation belt, and then immediately further separated by the separation roller, so that the paper sheets that are incompletely separated at the separation point are removed. Definitely 1 at the next separation point
It will be separated into pieces.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a side sectional view of a paper sheet feeding device according to an embodiment of the present invention, and FIG. 2 is a front view thereof.

Reference numeral 1 in the figure indicates a stack of paper sheets, and a kick-out roller 2 is disposed at the lower end thereof. The kick-out roller 2 has a circumferential part made of a material 2a with a high friction coefficient such as rubber, and the other circumferential part made of a material 2b with a low friction coefficient such as metal, and is fixed to a shaft 10. ing.

There is a feeding roller 2 at the front in the feeding direction of paper sheets.
0 and 30 are fixed to a shaft 11, and a part of the circumference of these delivery rollers 20 and 30 is made of a material 20a and 30a with a high coefficient of friction such as rubber, and the other part of the circumference is made of a material with a low friction such as metal. The grooves 20c and 3 are made of materials 20b and 30b of the coefficient, and grooves 20c and 3 are provided in a part of the circumferential direction in which a separation belt 5 and a separation roller 6, which will be described later, face each other.
0c is provided respectively.

The intake roller 4 is made of a material with a high friction coefficient such as rubber, and is rotatably supported by a shaft 13 fixed to a holding arm 8.
Since the take-in roller 4 is rotatably supported by the spring 9 and biased counterclockwise in FIG.

The separation belt 5 is made of a material with a high friction coefficient such as rubber, and is stretched between a pulley 7a fixed to the shaft 12 and a pulley 7b rotatably supported by the shaft 13. Like the intake roller 4, the pulley 7b side is urged toward the delivery roller 20 side. Further, the separation belt 5 is connected to the groove 20c of the feed roller 20.
The belt surface is provided at a position facing the feed roller 20, and the belt surface is set to slightly intersect with the circumferential surface of the feed roller 20. The separation roller 6 is made of a material with a high coefficient of friction such as rubber, and is fixed to the shaft 12, and is provided at a position facing the groove 30c of the kick-out roller 30, so that the roller surface slightly intersects the circumferential surface of the feed-out roller 30. is set to

The shaft 11 and the shaft 12 are rotated by a drive system (not shown), and the rotation of the shaft 10 is transmitted from the shaft 11 by a timing belt 14. Therefore, the kicking roller 2 and the feeding rollers 20, 30 are the first
The separation belt 5 and the separation roller 6 each rotate clockwise in FIG. 1 to feed out the sheets in order from the bottom, starting from the bottom, and the separation belt 5 and separation roller 6 also rotate clockwise in FIG. Separate the paper sheets to be mixed.

Next, the separation operation will be explained.

3 to 5 are explanatory diagrams of the operation of the sheet feeding device.

Figure 3 shows the start point of operation, 1a
is the lowest sheet of paper sheets 1, and 1b is the sheet immediately above 1a. First, the paper leaf 1a is pushed out by the kicking roller 2.
As a result, it is fed toward the contact point A between the delivery rollers 20, 30 and the take-in roller 4. At that time, for example, if the paper sheet 1b immediately above is also kicked out, the paper sheets 1a and 1b are moved to the delivery roller 2 by the take-in roller 4 rotatably supported by the shaft 13.
Separation belt 5 while being pressed to the 0, 30 side
and the first separation point B, which is the intersection of the feed rollers 20 (see FIG. 4). The paper sheet 1b sent to the first separation point B tries to be conveyed in the opposite direction to the feeding direction by the separation belt 5, which is driven in the opposite direction to the feeding direction, so that the paper sheet 1a gradually It will be separated from First separation point B
If the sheet 1b overlaps the sheet 1a and is fed out to the second separation point, which is the intersection with the separation roller 6 and the feeding roller 30 (see FIG. 5), the separation belt 5 is similar to the separation belt 5. Since the paper sheet 1b is about to be conveyed in the opposite direction to the feeding direction by the separation roller 6 which is being driven in the opposite direction to the feeding direction, the paper sheet 1b is gradually separated from the paper sheet 1a. Become. Further, the separation roller 6 is arranged in the groove 3 of the feed roller 30 so that only one sheet of paper can pass through.
Since it is provided opposite to 0c, the second separation point C
This means that only the bottom sheet 1a passes through.

[Effect of idea]

As described above, the present invention is designed to face one of the plurality of grooves provided in the circumferential direction of the feed roller that feeds paper sheets, and a part of the circumferential surface intersects with the outer circumferential surface of the feed roller and is opposite to the feed direction. a separation roller that is driven in the direction of the feed roller; Since it is composed of a separation belt that intersects the outer peripheral surface of the feeding roller at a position other than the intersecting position and is driven in the opposite direction to the feeding direction, even if the first separation operation is insufficient, the second separation operation can be performed. This allows you to reliably separate overlapping sheets.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a paper sheet feeding device which is an embodiment of the present invention, Fig. 2 is a front view of the paper sheet feeding device, and Figs. 3 to 5 are operations of the paper sheet feeding device. It is an explanatory diagram. 1...Paper sheets, 2...Kicking roller, 5...Separation belt, 6...Separation roller, 20, 30...
Feeding roller.

Claims (1)

[Scope of utility model registration request] A sheet of paper that is configured to sequentially kick out sheets from the bottom of stacked sheets using a kick-out roller, and to separate the kicked-out sheets one by one and feed them out using a feed-out roller. In the similar type feeding device, the feeding roller has a plurality of grooves having a diameter smaller than the outer diameter in the circumferential direction, and a part of the circumferential surface of the feeding roller faces one of the plurality of grooves and intersects with the outer circumferential surface of the feeding roller. a separation roller that is driven in a direction opposite to the feeding direction; and a separation roller that faces one of the plurality of grooves of the feeding roller and extends from the separation roller side to the rear side in the feeding direction, and a part of the circumferential surface is connected to the feeding roller. and a separation belt that intersects the outer circumferential surface of the delivery roller at a position other than the position where the separation roller intersects and is driven in a direction opposite to the delivery direction.