JP2711056B2 - 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 device for feeding paper sheets such as banknotes one by one.

[0002]

2. Description of the Related Art As a sheet feeding device for feeding sheets one by one by a kick-out roller and a feeding roller in which a part of the peripheral surface is a high friction portion and the other peripheral surface is a low friction portion. Is disclosed, for example, in Japanese Utility Model Laid-Open No. 59-8937.

In the apparatus described in the above publication, when a kick-out roller and a delivery roller (in this publication, a feeding auxiliary roller and a feeding drum, respectively) are rotated to feed out paper sheets, the paper stacked in the stacking section is rotated. The leaves located at the lowermost surface of the leaves are kicked out by the kick-out roller to the feed-out roller side, and the kicked-out sheets are interposed between the feed-out roller and the separation roller arranged in a comb shape. While being fed into the transport unit by the feed-out roller, the subsequent papers to be fed out while being overlapped with the papers are regulated by the separation roller, and the papers are fed out one by one. Was like that. So
Then, as described in the publication,
The paper fed from the separation roller is fed to the subsequent stage.
It is delivered to the transport rollers arranged on the downstream side
It will be transported to the downstream side of the transport.

[0004]

In the above-mentioned conventional apparatus, the sheet is fed in a state where the leading end of the sheet substantially coincides with the leading end in the rotational direction of the high friction portion of each of the kick roller and the feed roller. Since each roller is provided on each axis on the premise that the paper is ejected, for example, slippage occurs between the high friction portion of the kicking roller and the paper sheet, and a deviation occurs in the kicking timing of the paper sheet. In this case, the feeding roller cannot feed out the sheet at a predetermined timing, and as a result, the sheet is intermittently fed. That is, the payout row
The length (or diameter) of the peripheral surface of the paper
Pre-determined from the length of the class and the distance from the following sheet
The length of the high friction part of the feeding roller is
Only the paper sheets separated one by one by
Transport rollers so that they can be delivered to
Because it is predetermined from the distance to La
If the kick-out timing of LA is greatly delayed,
The high friction part of the feeding roller for kicked out paper sheets
The timing of the start of contact with the
Sheets separated into one sheet are delayed by the feeding roller.
Only the length of the remaining high friction part
As a result, the transfer force in the
The leading edge of the separated paper sheet is delivered to the transport rollers.
Instead, a situation occurs where the machine stops on the spot. Soshi
The paper sheets stopped in this way are fed by the feed roller.
Is rotated further, and the high friction part contacts again,
Will be delivered to the transport rollers soon,
One sheet of paper is fed with one rotation of the feed roller.
In this case, two rotations of the feeding roller are required.
And so-called intermittent feed occurs,
Time will increase. For this reason, the length of the high friction part
Although it is conceivable to simply increase the length,
The frictional conveyance force is
Large, conversely, the paper rolls without delay
When fed out, the subsequent paper sheets also have extra length of the high friction part.
So-called double feed or continuous feed that is fed out in contact with the part
Will occur.

[0005] The present invention has been made in view of the above circumstances, to prevent the occurrence of double feed or continuous feed, and
It is an object of the present invention to provide a sheet feeding device which prevents a skipping operation and continuously performs a normal operation of continuously feeding sheets one by one while maintaining a slight interval.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and is intended to feed out paper sheets on a paper supply mounting plate on which stacked paper sheets are mounted. A kick-out roller and a feed-out roller, each of which is rotatably disposed on the upstream side and the downstream side in the direction, and a high friction portion and a low friction portion are formed on the peripheral surface thereof; In a paper sheet feeding device including a guide roller having the same diameter and arranged coaxially, a peripheral portion of the guide roller corresponds to a rear end in a rotating direction of a high friction portion of the feeding roller. The feeding auxiliary member is provided at a position where the feeding auxiliary member protrudes radially from the peripheral surface of the feeding roller.

[0007]

According to the paper sheet feeding device of the present invention, kicking is performed.
The timing of kicking out the roller is greatly delayed
High friction part of the feeding roller for kicked-out paper sheets
The timing of the start of contact with the paper is also delayed, and the paper
The length of only the remaining short high-friction part that is delayed by the roller
However, the transfer force in the direction of the transfer roller on the downstream side is not applied.
The feeding roller rotates in the high friction part
Guide roller provided at the position corresponding to the rear end
The feeding auxiliary member protrudes from the peripheral surface of the feeding roller.
The contact pressure with the paper sheet following the peripheral surface of the feeding roller.
High and long acting, forcing the papers
To the transfer roller on the downstream side. Only
Guide rollers located on both axial sides of the feed roller
Roller protrudes radially from the peripheral surface of the feed roller.
Since the feeding auxiliary member is provided, the frictional force increases.
No double feed or continuous feed occurs.

[0008]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows a side view of a paper sheet feeding apparatus 1 according to one embodiment. The feeding apparatus 1 is incorporated in a sheet processing machine or the like, and a small amount of paper is fed one by one into the processing machine. This is a device for supplying the paper sheets P while leaving an interval.

A large number of paper sheets P are stacked and placed on a flat sheet-feeding mounting plate 2. In FIG. 1, the direction of the arrow (a) is the feeding direction of the paper sheet P, and a kick-out roller 3 is arranged below the mounting plate 2 and slightly near the center in the feeding direction. The kick-out roller 3 is rotatably installed with a shaft 3a integral with the kick-out roller 3 being orthogonal to the feeding direction and having a peripheral surface slightly above the upper surface of the mounting plate 2. I have. A part of the peripheral surface of the kick-out roller 3 is formed in the high friction part 4, and the other part is formed in the low friction part 5.

On the downstream side of the mounting plate 2, a feeding roller 6 is provided.
However, the shaft 6 a integral with the feeding roller 6 is installed in a state parallel to the shaft 3 a of the kick roller 3. As shown in FIG. 2, the feeding roller 6 has a central roller 7 which is located at the center and whose entire circumferential surface is made of a rubber material, and a plurality of central rollers 7 having the same diameter as the central roller 7 arranged on both sides of the central roller 7. And a sub-roller 8. A part of the peripheral surface of the sub-roller 8 is formed in the high-friction part 9, and the other part is formed in the low-friction part 10, similarly to the kick-out roller 3. Note that a groove 11 having a constant width is formed between the adjacent sub rollers 8. The center roller 7 and the sub roller 9
The peripheral surface of... Slightly protrudes from the extended surface of the upper surface of the mounting plate 2.

The kicking roller 3 and the feeding roller 6 have a timing belt in which the respective shafts 3a and 6a are driven by a driving unit in a state where the respective high friction portions 4 and 9 are directed in the same direction. (Abbreviation) and rotate in conjunction with the arrow (b) direction.

Guide rollers 12 are arranged on both sides in the axial direction of the outermost sub-roller 8 in the feeding roller 3. The guide roller 12 includes a central roller 7 and a sub-roller 8 that constitute the feeding roller 3.
, And is integrated with the shaft 6a. At a position corresponding to the rear end of the high friction portion 9 of the sub-rollers 8 in the rotation direction in the peripheral portion thereof, a feed-out auxiliary member 13 projecting radially from the peripheral surface of the sub-rollers 8 is provided. I have. As shown in FIG. 3, the auxiliary member 13 is formed in a disk shape by a high friction member such as rubber, and its peripheral portion projects slightly radially from the peripheral surface of the guide roller 12. Is inserted into a hole 12a formed in the guide roller 12 to such an extent that it does not rotate in the feeding operation.

The separation roller 1 is located at a position facing above the feeding roller 6 and between the grooves 11.
4 ... are arranged respectively. These separation rollers 14 ...
Is in a state in which the peripheral portion is slightly inserted into each groove 11,
A one-way clutch 15 is mounted on a shaft 14a parallel to the shafts 3a and 6a. Separating roller 14 ...
Is allowed to rotate only in the extending direction (counterclockwise in FIG. 1) by the one-way clutch 15, and the rotation in the opposite direction is restricted.

Next, the operation of the feeding device 1 having the above configuration will be described. The kick roller 3, the feed roller 6, and the shafts 3a, 6a of the guide roller 12 are driven, and the rollers 3, 6, 12 are rotated in conjunction with the feed direction of arrow (b). Then, the lowermost one of the sheets P stacked on the mounting plate 2 is first kicked out in the feeding direction by the tip of the high friction portion 4 of the kicking roller 3 in the rotating direction, and subsequently, , High friction portion 9 of feeding roller 6
The tip of the sheet in the rotating direction contacts the tip of one kicked-out sheet, and the sheet P is fed out by a frictional force.
The above operation is continuously performed, and the sheets P are fed out one by one with a slight interval. In addition, in order to feed out the sheets P one by one while keeping a slight interval in this way, the circumference of the kick-out roller 3 and the feed-out roller 6 is such that one sheet P is fed out by one rotation. And it is set so that it is performed until a slight interval is made thereafter. Further, at the time of this feeding operation, the separation roller 14 prevents the sheet P from being kicked by the kick roller 3 in a state where two or more sheets are overlapped.

[0016] Now, at the time of the delivery operation, for example, kick
The kick-out timing of the extension roller 3 is greatly delayed
As a result, the feeding roller 6 of the kicked-out sheet P is
The timing of the start of contact with the high friction portion 9 is also delayed, and the intermediate portion of the high friction portion 9 of the feeding roller 6 (sub roller 8)
When the sheet P is fed out while being in contact with the leading edge of the sheet P, the sheet P is likely to be fed out even though the rear end in the rotation direction of the high friction portion 9 of the feeding roller 6 reaches the position facing the separation roller 14. since the rest of the paper sheet P which has remained in the stacked unit, conventionally, until roller 6 further one revolution feed as it is, Shi decremental the sheets P remains downstream Could not be delivered to the transport roller on the side . That is, it was intermittently extended.

However, in the present apparatus 1, the auxiliary member 13 of the guide roller 12, which is provided at a position corresponding to the rear end in the rotation direction of the high friction portion 9 of the feeding roller 6, is driven by the feeding roller .
Roller 6 that protrudes from the peripheral surface of the roller 6
The contact pressure with the paper sheet P imitating the shape is high and works for a long time
As a result, the sheet P is forcibly fed out and transported downstream.
Transfer to the feed roller. In particular, in this case, by providing the auxiliary member 13 projecting in the radial direction of the guide roller 12, instead of simply increasing the length of the high friction portion 9, the frictional force is increased.
Is not too high and double feed or continuous feed can occur.
Not even. Therefore, even if the kick-out roller 3 kicks out the sheet P at a time when the kick-out roller 3 is displaced, the normal operation of continuously feeding the sheet P one by one at a slight interval is always maintained, and the feeding is performed. Intermittent problems are eliminated.

Since the auxiliary member 13 in the present embodiment is a high friction member, a protruding portion from the guide roller 12 which comes into contact with the paper sheet P is worn out over a long period of use, so that the auxiliary member 13 exhibits a sufficient function. In this case, the auxiliary member 13 may be manually rotated in the hole 12a to switch the protruding portion every predetermined period.

The thicknesses of the guide roller 12 and the auxiliary member 13 are not particularly limited, but the larger the thickness is, the more reliable the feeding operation is. Further, in this embodiment, since the guide roller 12 and the separation roller 14 are separated from each other to a certain extent, the amount of discrepancy between the outer peripheral surfaces of the auxiliary member 13 and the separation roller 14 is reduced. There is no fear that the paper sheet P to be broken will break. In the present embodiment, the guide roller 12 is brought into close contact with the sub-roller 8. However, the guide roller 12 may be separated from the sub-roller 8 as long as the width is within the width of the paper sheet P. To ensure that frictional force acts on the leaves P,
It is better to increase the amount of protrusion of the auxiliary member 13.

The auxiliary member for feeding out according to the present invention is not limited to the auxiliary member 13 of the above embodiment. For example, a member in which a rubber piece protruding in the radial direction is attached to a part of the peripheral surface of the guide roller 12 may be used. A part of the peripheral surface of the guide roller 12 itself may be slightly projected in the radial direction, and a rubber sheet may be attached to the projected portion.

[0021]

As described above, according to the paper sheet feeding apparatus of the present invention, the kicking time of the kicking roller is adjusted.
Is greatly delayed, causing the kicked-out sheets
The timing of the start of contact of the feeding roller with the high friction part
Lag, the paper sheets are left over by the delay of the feeding roller.
Only the length of the high friction part is toward the transport roller on the downstream side
Even if the feeding force of
It is provided at a position corresponding to the rear end of the friction portion in the rotation direction.
The guide roller feed-out auxiliary member is
Following the peripheral surface of the feeding roller
The contact pressure with the paper sheets is high and will act for a long time
The paper is forcibly fed out to the downstream transport roller.
Give it away. In addition, both sides of the feed roller in the axial direction
From the peripheral surface of the feeding roller to the placed guide roller
Also has a feeding auxiliary member that protrudes in the radial direction.
The frictional force does not become too high and double feed and continuous feed occur.
I do not live. Therefore, there is an effect that the normal operation of continuously feeding out the sheets one by one at a slight interval is always maintained.

[Brief description of the drawings]

FIG. 1 is a side view of one embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrows AA in FIG. 1;

FIG. 3 is a side view of a guide roller into which a feeding auxiliary member is fitted.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 paper sheet feeding device 2 paper feeding mounting plate 3 kicking roller 4 high friction portion of kicking roller 5 low friction portion of kicking roller 6 feeding roller 9 high friction portion of feeding roller 10 low friction portion of feeding roller 12 Guide roller 13 Feeding auxiliary member

Claims (1)

(57) [Claims] 1. A paper feed mounting plate on which stacked paper sheets are mounted is rotatably disposed on an upstream side and a downstream side in a paper sheet feeding direction, respectively, and has a high friction on a peripheral surface thereof. Paper sheet including a kick-out roller and a feed-out roller in which a feeding portion and a low-friction portion are formed, and guide rollers provided on both axial sides of the feed-out roller in the same diameter and coaxially as the feed-out roller. In the feeding device, at a position corresponding to a rotation direction rear end of the high friction portion of the feeding roller in a peripheral portion of the guide roller, a feeding auxiliary member protruding in a radial direction from a peripheral surface of the feeding roller is provided. A paper sheet feeding device characterized by being used.