JP2576213B2 - Paper feeding mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] A paper sheet provided with a reversing roller that rotates a rear end portion of a banknote in a reverse direction with a weak feeding force in conjunction with rotation of a feeding roller for feeding banknotes that are aligned and stacked. With regard to the paper feeding mechanism, the purpose of the present invention is to provide a paper feeding mechanism capable of preventing double-feeding and abnormal approach of the paper, preventing discrimination failure and counting errors, etc. A storage unit that is stacked and stored, and a pressing plate that presses the stored paper sheets toward the bottom of the storage unit,
A one-way clutch, which is provided at the bottom of the housing portion and is formed of a material having a large coefficient of friction, and is operated by rotation of the rotating shaft in the feeding direction of the paper sheets, is used to release the paper sheets pressed by the pressing plate. A feeding roller that feeds out by rotation of the rotating shaft, and an idling roller that is rotatably mounted on the rotating shaft coaxially with the feeding roller with a gap therebetween and is formed of a material having a small coefficient of friction and a diameter slightly larger than the diameter of the feeding roller, It has a friction surface with a large coefficient of friction, is provided in front of the storage section in the direction in which the paper sheets are fed, and the friction surface is slightly inserted between the feeding roller and the idling roller. The accelerating roller, which always rotates in contact with the sheet, accelerates and conveys the sheet fed by the feeding roller and passed through the separator, and is accommodated in the accommodating portion on the opposite side to the feeding direction of the feeding roller. A reversing roller, which is provided at a position in contact with the end of the paper sheet near the end thereof, has a feeding force smaller than the paper sheet feeding force by the feeding roller, and rotates in the opposite direction in conjunction with the rotation of the feeding roller. Configuration.

[Industrial applications]

The present invention relates to a bill handling device used in a financial institution and the like, and in particular, in conjunction with the rotation of a pay-out roller, a reverse rotation in which a contact is made with the trailing end of the bill in a direction opposite to the pay-out and is rotated with a weaker feeding force than the pay-out roller. The present invention relates to a paper sheet feeding mechanism provided with rollers.

In recent years, automatic deposit machines (Auto
Automatic transaction machines such as matic Deposit (hereinafter referred to as AD) and automatic teller machine (hereinafter referred to as ATM) and banknote handling devices incorporated in banknote sorters are used for differential counting of incoming and outgoing banknotes. Although a bill feeding mechanism is provided for storing the classification, etc., the feeding is unstable and double feed or abnormal approach before and after the fed banknotes occurs, making it impossible to discriminate the banknotes or counting errors. A method for stabilization 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 view of the lower portion of the storage section 2a and the feeding mechanism 3, and bills 1a stacked in a line are pressed from above by a pressing plate 7a urged downward by, for example, a spring (not shown). Is done.

A feeding mechanism 3 is provided at a lower end of the storage 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.

A semicircular separator 8a (.about.8d) having an arc surface on the left side in the drawing and having a large friction coefficient, for example, rubber, is disposed in front of the lower end of the housing portion 2a, and further in front of the acceleration roller R3. Is provided. The acceleration roller R3 and the pick roller R2 are formed of rubber.

As shown in FIG. 6, the feeding roller R1 is a rubber roller.
9a to 9d, a pair of rubber rollers 9a and 9b, and metal rollers 10a and 10b and a roller shaft provided between the rubber rollers 9c and 9d, respectively.
11a, the rubber rollers 9a to 9d are attached to the roller shaft 11a via one-way clutches 12a to 12d, and the roller shaft 11a
One-way clutches 12a-1
2b operates and rotates. At this time, the pick roller R2 shown in FIG. 5 rotates in the same direction in conjunction with it.

The metal rollers 10a and 10b are idle rollers, and the rubber rollers 9a to 9
The diameter is slightly larger than d, and steps are formed on both edges,
The rotation of the accelerating roller R3 shown in FIG. 5 which is attached to the roller shaft 11a via bearings 13a and 13b and which is in contact with the respective outer circumferences always rotates the bills in the accommodation portion 2a.
It slips by contacting 1a with a predetermined pressure.

The arc surfaces (friction surfaces) of the separators 8a to 8d enter the gaps between the rubber rollers 9a to 9d and the step portions of the metal rollers 10a and 10b, and are located slightly inside the outer periphery of the rubber rollers 9a to 9d.

Referring again to FIG. 5, 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.

The acceleration roller R3 has a roller shaft 14, and has metal rollers 10a and 10a.
b and is opposed to the rubber rollers 9a to 9d with a slight gap therebetween. When the banknote 1a is fed by the rubber rollers 9a to 9d, the banknote 1a is sandwiched and accelerated together with the rubber rollers 9a to 9d. The roller shaft 14 is connected to the motor M2.

With such a configuration, when a bundle of banknotes 1a in which a plurality of denominations are mixed is accumulated in the storage unit 2a and the feeding is started, the banknotes 1a are intermittently rotated by the rubber rollers 9a to 9d and the pick roller R2. It is paid out. Dispensed banknote 1a
When there are a plurality of sheets, the second sheet or more from the lower side is restricted by the arc surface of the separator 8a and only one sheet 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 9d and is accelerated by the rotational drive of the accelerating roller R3.At this time, the rubber rollers 9a to 9d 12
The idle rotation follows the rotation speed of the acceleration roller R3 in the direction in which a to 12d 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 separator functions and passes only one sheet when it is already double feed, but when the bill is fed, the tip of the bill is one sheet. When accelerated by the acceleration roller, the back of the bill is still at the position of the payout roller and overlaps the next bill, and when the bill is accelerated by the acceleration roller, the bill being fed is overlapped with the next bill. Due to the friction of the bills, the next bills are dragged and fed out at a high speed, passed through and conveyed without the effect of the regulation by the separator. It is easy for the double-feed to discriminate banknotes, or the sensor detection becomes unstable due to abnormal approach, and counting errors may occur. There is a problem that arises.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bill feeding mechanism capable of preventing double feed and abnormal approach of paper sheets, and preventing discrimination failure and counting mistakes.

[Means for solving the problem]

 FIG. 1 shows the principle configuration of the present invention.

In the figure, 1 is a paper sheet, 2 is a storage section, 7 is a pressing plate,
Numeral 11 denotes a rotating shaft, numeral 12 denotes a one-way clutch, numeral 9 denotes a member provided at the bottom of the housing portion 2, which is formed of a material having a large coefficient of friction, and which operates by rotating the rotating shaft 11 in the feeding direction of the paper sheet 1. A feeding roller having a directional rotating clutch 12 and feeding out the paper sheet 1 pressed by the pressing plate 7 by the rotation of the rotating shaft 11. A feeding roller 10 is rotatably mounted on the rotating shaft 11 coaxially with the feeding roller 9 with a gap therebetween. The idle roller 8 is formed of a material having a small coefficient of friction and has a diameter slightly larger than the diameter of the feeding roller 9. Reference numeral 8 denotes a friction surface having a large coefficient of friction, and the front of the housing portion 2 in the direction in which the sheet 1 is fed. A separator 15 made of a material having a large coefficient of friction and having a friction surface slightly entering between the feeding roller 9 and the idling roller 10, is in contact with the idling roller 10 and constantly rotates to rotate. Paid out by An accelerating roller 16 for accelerating and conveying the paper sheet 1 having passed through the separator 8 is provided at a position in contact with an end of the paper sheet 1 accommodated in the accommodating section 2 on the opposite side to the feeding direction of the feeding roller 9, This is a reverse roller having a feeding force smaller than the feeding force of the paper sheet 1 by the feeding roller 9 and rotating in the opposite direction in conjunction with the rotation of the feeding roller 9.

Accordingly, the feeding roller 9 is rotated in the feeding direction, and the reverse rotation roller 16 is rotated in the reverse direction.

[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 idle roller 10, and the idle roller 10 is accelerated by the acceleration roller 15.
It is rotating and slipping due to the drive. When the feeding is started, the feeding roller 9 rotates in the direction in which the paper sheet 1 is fed, and the reverse rotation roller 16 rotates in the reverse direction in conjunction with the rotation.

Then, the feeding force of the feeding roller 9 is changed to the reverse rotation roller 16.
, The sheet 1 is fed out. The leading edge of the paper sheet 1 passes through the separator 8 and is accelerated.
When the sheet is accelerated by the roller 15, the reverse roller 16 is rotating in the reverse direction, so that a force for sending the next sheet 1 in the reverse direction acts, and the sheet 1 before being accelerated by the acceleration roller 15 is actuated. Against the dragging force of the next paper sheet 1 can be prevented from being dragged. Therefore, there is no double feed in which the overlap of the paper sheets 1 is shifted or abnormal approaching.

In this way, it is possible to prevent indistinguishability, counting errors, and the like.

〔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 indicated by alternate long and short dash lines. The same reference numerals indicate the same objects throughout the drawings.

FIG. 2 shows the accommodating portion 2a and the feeding mechanism 3a of the bill sorting apparatus. In the drawing, a reverse roller 16a made of rubber is provided on the right side of the pick roller R2 and near the right end of the stacked bills 1a. It is provided at a position where it is pressed against 1a. The area of the reverse roller 16a in contact with the bill 1a is the rubber roller 9a to 9d.
And the pick roller R2 is set smaller than the area of contact with the bill 1a, and the feeding force is set to be smaller than the feeding force by the rubber rollers 9a to 9d and the pick roller R2.

Belt B1, between pulley P1 provided on motor shaft 17 of motor M3 and pulley P2 provided on rotating shaft 20 of reverse rotation roller 16a.
B2, pulleys P3, P4, and gears G6, G7 are provided.
The reverse rotation roller 16a is configured to rotate in the reverse direction in conjunction with the rotation of the rubber rollers 9a to 9d and the pick roller R2.

With such a configuration, when the banknotes 1a stacked and stored in the storage unit 2a are pressed by the pressing plate 7a, the banknotes 1a are pressed by the rubber rollers 9a to 9d, the idle rollers 10a and 10b, the pick roller R2, and the reverse roller 16a. The idle rollers 10a and 10b are rotated by the driving of the acceleration roller 15a and slip.
When the feeding is started, the rubber rollers 9a to 9d and the pick roller R2 rotate in the direction in which the banknote 1a is fed, and in conjunction with this, the reverse rotation roller 16a rotates in the reverse direction.

FIG. 3 is an explanatory diagram of a feed speed at the time of feeding, in which a
Is the rising of the feed roller R1, pick roller R2 and reverse roller 16a by the motor M3, b is the constant speed feed, and c is the accelerated transport speed by the acceleration roller 15a (that is, the transport speed of the apparatus).
Is shown.

Thus, since the feed force due to the rotation of the rubber rollers 9a to 9d and the pick roller R2 is greater than the feed force due to the rotation of the reverse rotation roller 16a, the bill 1a is paid out. When the tip is accelerated by the acceleration roller 15a after passing through the separator 8,
Since the force for feeding the next banknote 1a in the reverse direction is exerted by the reverse rotation of the reverse rotation roller 16a, the next banknote 1a can be prevented from being dragged against the dragging force of the accelerated banknote 1a, Even if it is slightly dragged, it does not exceed the separator 8a. Therefore, the double feed in which the overlap of the bills 1a is shifted or the front and rear bills 1a do not abnormally approach each other.

In the above-mentioned example, the case where the setting of the feeding force of the reverse rotation roller 16a is based on the area in contact with the banknote 1a has been described. Alternatively, the position of the reverse roller 16a may be lowered to reduce the contact pressure between the banknote 1a and the reverse roller 16a.

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 such as an AD or an ATM, and the same effect can be obtained.

〔The invention's effect〕

As described above, according to the present invention, at the time of feeding out the paper sheet, the reverse rotation roller having a smaller feeding force than the feeding roller is rotated in the reverse direction in conjunction with the rotation of the feeding roller, so that the fed paper sheet is When the sheet is accelerated by the accelerating roller, the next sheet is prevented from being dragged by the accelerated sheet and fed out by receiving the feeding force in the reverse direction by the reverse rotation roller. There is an effect that it is possible to prevent double feed in which the overlaps are displaced or abnormal approach, thereby preventing discrimination failure or counting error or the like.

[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 view of the feeding of the embodiment, FIG. 4 is a bill sorting apparatus to which the present invention is applied 5, FIG. 5 is a side view showing a conventional feeding mechanism, and FIG. 6 is a view of the feeding roller, idling roller and separator in FIG. In the figure, 1 is a paper sheet, 1a is a bill, 2, 2a is a storage section, 7, 7a is a pressing plate, 8, 8a is a separator, 9, R1 is a feeding roller, 9a to 9b are rubber rollers, and 10 is an idle roller. Reference numeral 10a denotes a metal roller, 11 denotes a rotating shaft, 11a and 14 denote roller shafts, 12 and 12a denote one-way clutches, 15, R3 denotes an acceleration roller, 16, 16a denotes a reverse rotation roller, and R2 denotes a pick roller.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-111246 (JP, A) JP-A-61-1336837 (JP, A) Fully open 1980-149841 (JP, U) Really open 1980 183136 (JP, U) Japanese Utility Model 1-96447 (JP, U) Japanese Utility Model Utility Model 61-46948 (JP, U)

Claims (1)

(57) [Claims] An accommodating section (2) in which a plurality of aligned paper sheets (1) are accumulated and accommodated, and the paper sheets (1) accommodated in the accommodating section (2) are stored in the accommodating section. (2) a pressing plate (7) for pressing toward the bottom, and a sheet (1) provided on the bottom of the housing section (2) and made of a material having a large coefficient of friction and having a rotating shaft (11). The feed roller (9) has a one-way clutch (12) that is operated by rotation in the feeding direction of the paper (1), and feeds the paper sheet (1) pressed by the pressing plate (7) by the rotation of the rotary shaft (11). )
And is rotatably mounted on the rotating shaft (11) coaxially with the feed roller (9) with a gap therebetween, and formed of a material having a small friction coefficient to a diameter slightly larger than the diameter of the feed roller (9). An idler roller (10), a friction surface having a large coefficient of friction, provided in front of the housing portion (2) in a direction in which the paper sheet (1) is fed, and the friction surface is provided with a feeding roller (9) and A separator (8) slightly entering between the idling rollers (10) and a separator (8) which is brought into contact with the idling rollers (10) and constantly rotates and is fed by the feeding roller (9); Roller (15) that accelerates and transports paper sheets (1) that have passed through
A paper sheet (1) housed in the housing portion (2) on the opposite side to the feeding direction of the feeding roller (9) and in contact with an end of the paper sheet (1). A sheet reversing roller (16) having a feeding force smaller than the repelling force of the leaf (1) and comprising a reversing roller (16) rotating in the opposite direction in conjunction with the rotation of the dispensing roller (9). mechanism.