JP2580750B2 - Paper feeding mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention relates to a paper sheet feeding mechanism in which the feeding force of an outer portion of a divided feeding roller for feeding aligned banknotes is set to be larger than the feeding force of an inner portion. The purpose of the present invention is to provide a paper sheet feeding mechanism capable of preventing wrinkles due to feeding of paper and preventing occurrence of jamming and discrimination errors by normal feeding, and in which bills are accumulated horizontally long in the feeding direction. And a pressing plate that presses the bill toward the bottom of the containing section, and at least three pieces formed of a material having a large coefficient of friction, provided in the longitudinal direction of the bill near the leading end of the bottom in the feeding direction. Are coaxially mounted at an interval at a center position in the axial direction of the roller shaft and a position symmetrical with respect to the center, or at a position symmetrical with respect to the center at an interval, and are rotated by rotation of the roller shaft. And a pick roller which is provided in parallel with the feeding roller in contact with substantially the center position of the bill at the bottom, and a pick roller which rotates in the same direction in conjunction with the rotation of the feeding roller, and is provided in front of the feeding direction of the bottom. And a separator having a large coefficient of friction which slightly contacts one of the inner and outer partial rollers with respect to at least one of the outer and outer partial rollers. A paper sheet feeding mechanism for feeding a banknote by rotating a feeding roller and a pick roller,
The feeding force of the inner partial roller is set to be smaller than the feeding force of the outer partial roller of the feeding roller.

[Industrial applications]

The present invention relates to a banknote handling apparatus used in a financial institution and the like, and in particular, a paper sheet in which the feeding force of an outer portion of a divided feeding roller for feeding banknotes aligned and stacked is set to be larger than the feeding force of an inner portion. The present invention relates to a similar feeding mechanism.

In recent years, banknote handling machines used by financial institutions and the like are provided with a banknote payout mechanism for discriminative counting of stored banknotes, storage of denominations, etc. As a result, a jam, a discrimination error and a counting error occur, so that a feeding mechanism that does not wrinkle is desired.

[Conventional technology]

FIG. 4 shows an internal side view of the bill sorting apparatus, in which a storage unit 2a for collectively setting bills 1a to be sorted and a feeding mechanism.
3, a discriminating and counting unit that discriminates between the denomination and the front and back of banknote 1a and counts 4,
Storage boxes 5a to 5c for storing banknotes 1a by denomination, reject boxes 5d for rejecting and storing indistinguishable banknotes, storage mechanisms 50a to 50d, and a transport path 6 for transporting the banknotes 1a between these mechanisms. The transport path 6 is composed of routes a to d, and feed rollers, gates, and sensors are arranged at important points.

FIG. 5 is an enlarged side view of the storage section 2a and the feeding mechanism 3, and FIGS. 6A and 6B are a front view and a plan view of the feeding mechanism 3. FIG.

In FIG. 5, the banknotes 1a aligned and stacked are pressed from above by a pressing plate 7a urged in the arrow direction by, for example, a spring (not shown).

A feeding mechanism 3 is provided at a lower end of the housing portion 2a. The feeding mechanism 3 is provided at one end of the bill 1a, a feeding roller R1 disposed at a position corresponding to a left end in the drawing, and a pick disposed at a substantially central position of the bill 1a. It is composed of a roller R2 and gears G1 to G5 for transmitting the rotational force of the motor M1 to the feed roller R1 and the pick roller R2.

As shown in FIG. 6 (a), the feeding roller R1 is made of a material having a large coefficient of friction on the outer circumference of a metal ring, for example, rubber rollers 9a to 9f having the same diameter and a set of three rubber rollers 9a and 9b. , Rubber rollers 9c and 9d, and metal rollers 10a to 10c and roller shaft 11 sandwiched between rubber rollers 9e and 9f, respectively.
The rubber rollers 9a to 9f are attached to the roller shaft 11a via one-way clutches 12a to 12f, and driven by the roller shaft 11a in the feeding direction, the one-way clutches 12a to 12f
Operates and rotates. At this time, the pick roller R2 is linked.

The metal rollers 10a to 10c are slightly larger in diameter than the rubber rollers 9a to 9f, and have step portions formed on both edges, are mounted on the roller shaft 11a via bearings 13a to 13c, and come into contact with the respective outer circumferences to be described later. It is constantly rotated by the rotation of the acceleration roller R3, and comes into contact with the banknote 1a of the storage section 2a at a predetermined pressure to slip. The rubber rollers 9a to 9d are pressed against the banknote 1a in a stationary state, and the rotation of the motor M1 rotates the rubber rollers 9a to 9d and the pick roller R2 to feed out the banknote 1a. At this time, the rotation of the metal rollers 10a and 10b also contributes to feeding.

As shown in FIG. 6 (b), the pick roller R2 is composed of a pair of rubber rollers 15a and 15b having a structure in which a material having a large friction coefficient, for example, a rubber ring is fitted around the outer periphery of the metal ring.
The feed roller R1 is attached to a roller shaft 14 parallel to the roller shaft 11a.

Referring again to FIG. 5, semicircular separators 8a to 8f having an arc surface on the left side of the drawing roller R1 and on the left side of the drawing and having a large friction coefficient, for example, rubber, are arranged, and further in front of the separators. An acceleration roller R3 is provided. The acceleration roller R3 is formed of rubber.

The acceleration roller R3 has a roller shaft 17, and the metal rollers 10a-1
It rolls into contact with 0c and is opposed to the rubber rollers 9a to 9f with a slight gap therebetween. When the banknote 1a is fed by the rubber rollers 9a to 9f, the banknote 1a is sandwiched and accelerated together with the rubber rollers 9a to 9f. The roller shaft 17 is connected to the motor M2.

The arc surfaces of the separators 8a to 8f enter the gap between the step portions of the rubber rollers 9a to 9d and the metal rollers 10a to 10c, and
It is located slightly inside the outer circumference of 9a to 9f.

With such a configuration, when the banknotes 1a in which a plurality of denominations are mixed are accumulated in the storage portion 2a and the feeding is started, the banknote 1a is fed by the intermittent rotation of the feeding roller R1 and the pick roller R2. As shown in FIG. 7, when the fed banknote 1a is skewed, the left and right separators 8a, 8
The inclination is corrected by b and the separators 8e and 8f. When there are a plurality of fed banknotes 1a, the passage of the second or more banknotes from the lower side is regulated by the separators 8a to 8f, and only one banknote 1a passes.

The passed banknote 1a is accelerated by the acceleration roller R3 and transported to the route a. When the bill 1a is accelerated by the accelerating roller R3, the bill 1a is sandwiched between the accelerating roller R3 and the rubber rollers 9a to 9f and is accelerated by the rotational drive of the accelerating roller R3.At this time, the rubber rollers 9a to 9f are one-way clutches. 12
The idle rotation follows the rotation speed of the acceleration roller R3 in the direction in which a to 12f does not operate.

Thus, the banknote 1a is sent through the route a, the denomination / front and back are discriminated and counted by the discrimination counting unit 4, and the back is reversed by the route c at the time of the back,
At the time of the front, it is stored in the storage boxes 5a to 5c by the denomination through the route d via the route b. The banknote 1a that cannot be discriminated is stored in the reject box 5d.

In this way, the stacked banknotes 1a are fed by the feeding mechanism 3 and stored by denomination.

[Problems to be solved by the invention]

According to the above-mentioned conventional method, when the bill is fed by the feeding roller and the pick roller, the pick roller pays out near the center of the banknote. Therefore, as shown in FIG. Since the portion becomes late, the banknote is slackened at the rear portion and rises up, and when the banknote passes through the feeding roller as it is, a phenomenon occurs that the rear portion wrinkles as shown in FIG. 8 (b). The banknotes in circulation have a fold at the center in the longitudinal direction of the rabbit corner, or are soft, and this part is weak, so that wrinkles are likely to be formed. On the other hand, a method of feeding the pick roller not only in the vicinity of the center of the bill but also in a wide range in the longitudinal direction of the bill is conceivable. However, this method cannot be adopted because the degree of freedom is lost when the skew of the fed bill is corrected by the separator.

Therefore, if the wrinkled banknote is sent as it is, it becomes easy to skew due to the deformed banknote, causing a jam, and the thickness of the wrinkled portion increases, and it is detected as a plurality of sheets by the thickness detection. There is a problem that it is determined as a double feed or a fake bill.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bill feeding mechanism capable of preventing wrinkles due to feeding of paper sheets and preventing occurrence of a jam, discrimination error or the like by normal feeding.

[Means for solving the problem]

 FIG. 1 is a block diagram showing the principle of the present invention.

In the figure, 1 is a paper sheet, 2 is a storage section, 7 is a pressing plate,
Reference numeral 11 denotes a roller shaft. 9 denotes at least three rollers 9 provided at the bottom of the storage unit 2 at a position close to the leading end in the feeding direction of the paper sheet 1 in the longitudinal direction of the paper sheet 1 and having a large friction coefficient. Roller 90 is coaxially mounted at a center position in the longitudinal direction of the roller shaft 11 in the longitudinal direction of the sheet 1 and a position symmetrical with respect to the center, or a position symmetrical with respect to the center at an interval, and the outer part The feed roller 15 is set so that the feed force of the inner partial roller 90 is reduced by the feed force of the roller 90 and is rotated by the rotation of the roller shaft 11. The feed roller 15 is located substantially at the center of the sheet 1 at the bottom of the storage unit 2. And is provided in parallel with the feeding roller 9,
A pick roller 8 that rotates in the same direction in conjunction with the rotation of the pick-up roller 8, which is provided at the bottom of the storage unit 2 in the front of the direction in which the paper sheets 1 are fed out, and one surface of which is in contact with at least one partial roller 90 on the outside; Alternatively, it is a separator made of a material having a large coefficient of friction and located between each of the outer partial roller 90 and the inner partial roller 90 with respect to the outer partial roller 90.

Therefore, when the sheet 1 is fed by the rotation of the feed roller 9 and the pick roller 15, the feeding of the sheet 1 on both outer sides precedes the feeding of the sheet 1 on the inside.

[Action]

When the paper sheets 1 are aligned and stacked and stored in the storage unit 2 and pressed by the pressing plate 7, the paper sheets 1 are pressed by the feeding roller 9 and the pick roller 10, and the rotation of the feeding roller 9 and the pick roller 10 is performed. When the paper 1 is fed out by
Even if the pick roller 8 is fed near the center of the sheet 1, the feed force of the partial roller 90 inside the feed roller 9 is smaller than the feed force of the outer partial roller 90. The leading end of the paper sheet 1 is lost, and the paper sheet 1 is sent to the separator 8 in a state in which the trailing end central part of the paper sheet 1 is pulled, and the skew is corrected and double feed is prevented. .

Therefore, wrinkling can be prevented, and the occurrence of jams, indistinguishability, and counting errors can be prevented.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In FIG. 2, those corresponding to FIG. 1 are shown surrounded by alternate long and short dash lines. The same reference numerals indicate the same objects throughout the drawings.

FIG. 2 shows the feeding mechanism 3a of the bill sorting apparatus. In the drawing, rubber rollers 90c, 90 inside the feeding roller R1 'are shown.
Each width b of d is set smaller than the width a of each of the outer rubber rollers 9a, 9b and 9e, 9f, so that the area in contact with the bill 1a is narrowed, and the feeding force is slightly reduced.

With such a configuration, when the banknotes 1a stacked and stored in the storage section 2a are pressed by the pressing plate 7a, the banknotes 1a are rubber rollers 9a, 9b, 90c, 90d, 9e, 9f, metal rollers 10a, 10b, and picks. Pressed by the roller R2, the metal rollers 10a and 10b are rotated and slipped by the driving of the acceleration roller 15a.
When the feeding is started, the rubber rollers 9a, 9b, 90c, 90d, 9
e, 9f, and the pick roller R2 rotate in the direction in which the banknote 1a is fed by intermittent rotation. Then, the central part of the bill 1a is fed out by the pick roller R2, while the rubber roller 9
Since the feed force of a, 9b, 9e, 9f is larger than the feed force of the rubber rollers 90c, 90d, as shown in FIG. 3, the bill 1a is fed out so that both ends thereof precede the central portion. No wrinkling occurs at the center of the rear end. The tip is separator 8a ~ 8c
Is reached, the skew is corrected by the resistance of one of the separators 8a and 8b or the separators 8e and 8f, and the double feed is prevented and the sheets are fed one by one.

In this way, it is possible to prevent a discrimination error and a counting error that occur due to a difference in thickness of a jam or a wrinkle portion caused by wrinkling at the center of the rear end of the bill 1a.

In the above example, bill 1 is used as a method of making the feeding force of rubber rollers 90c and 90d smaller than the feeding force of rubber rollers 9a, 9b, 9e and 9f.
Although the case where the contact area is reduced by reducing the roller width to a has been described, other methods may be used, for example, the friction coefficient of the rubber rollers 90c, 90d is made smaller than the friction coefficient of the rubber rollers 9a, 9b, 9e, 9f. Method (for example, rubber rollers 9a, 9b, 9e, 9
f is a rubber roller with low hardness, rubber rollers 90c and 90d are made of urethane rubber with high hardness), or rubber roller 90c,
The diameter of 90d may be set slightly smaller than the diameter of the rubber rollers 9a, 9b, 9e, 9f.

Although the above-described example describes the case of the bill sorting apparatus, it can be generally applied to a device having a bill feeding mechanism, for example, an automatic transaction device, and the same effect can be obtained.

[Effects of the Invention] As described above, according to the present invention, the feeding force for feeding the papers of the partial rollers inside the feeding roller by the feeding mechanism for feeding the horizontally long papers is calculated from the feeding force of the outer partial rollers. By setting the distance to a small value, it is possible to prevent wrinkles at the center of the rear end of the paper sheet when the paper sheet is fed out. Is not determined as double feed or a false banknote due to an increase in the thickness of the banknote, and there is an effect that stable feeding can be performed.

[Brief description of the drawings]

1 is a block diagram showing the principle of the present invention, FIG. 2 is a block diagram showing an embodiment of the present invention, FIG. 3 is an explanatory diagram of the embodiment, and FIG. 4 is an inside of a bill sorting apparatus to which the present invention is applied. FIG. 5 is a side view showing the conventional feeding mechanism, FIG. 6 is a configuration diagram of the conventional feeding mechanism, FIG. 7 is an explanatory view of the conventional example, and FIG. FIG. In the figure, 1 is a paper sheet, 1a is a bill, 2, 2a is an accommodating section, 7, 7a is a pressing plate, 8, 8a to 8f are separators, 9, R1, R1 'is a feeding roller, 9a to 9f, 15a. , 15b, 90c, 90d are rubber rollers, 10a to 10c are metal rollers, 11,11a, 14, 17 are roller shafts, 12a to 12f are one-way clutches, and R2 is a pick roller.

Claims (1)

(57) [Claims] An accommodating portion (2) in which a plurality of aligned paper sheets (1) are accumulated and accommodated horizontally in a feeding direction.
A pressing plate (7) for pressing the paper sheets (1) stored in the storage section (2) toward the bottom of the storage section (2); and a paper sheet at the bottom of the storage section (2). At least three partial rollers (90), which are provided in the longitudinal direction of the paper sheet (1) at a position near the leading end in the feeding direction of (1) and are formed of a material having a high coefficient of friction, have a roller shaft (11). The paper sheets (1) are mounted coaxially at a center position in the longitudinal direction and a position symmetrical with respect to the center or a position symmetrical with respect to the center at an interval, respectively, by rotation of the roller shaft (11). A rotating feeding roller (9), which is provided substantially parallel to the center of the paper sheet (1) at the bottom of the storage section (2) and is provided in parallel with the feeding roller (9); A pick roller (15) that rotates in the same direction in conjunction with the rotation, and paper sheets (1) at the bottom of the storage section (2) One surface is provided in front of the unreeling direction, and one surface contacts at least one partial roller (90) on both outer sides or is inner with respect to the both outer partial rollers (90) and the both outer partial rollers (90). And a separator (8) formed of a material having a high coefficient of friction, which is located slightly between each of the partial rollers (90), and which is pressed by the pressing plate (7). A sheet feeding mechanism for feeding the sheet by rotation of the feed roller (9) and the pick roller (15), wherein the partial rollers (90) of at least three of the partial rollers (90) of the feed roller (9) 90. A paper sheet feeding mechanism, wherein the partial roller (90) for feeding the paper sheet (1) has a smaller feeding force for feeding the paper sheet (1) than the feeding force for feeding the paper sheet (1).