JPH0648614A - Paper sheets processing device - Google Patents

Abstract

PURPOSE:To provide a bill processing device capable of stably taking in bills regardless of the state of the bills. CONSTITUTION:The carrying state of the bills carried in a passage is detected through the take-in state detector 60, the first carrying state detector 62, and second carrying state detector 70 arranged directly after a take-in roller 20, and carrying rollers 40a and 40b. Based on the carrying state detected by these tree detectors 60, 62, and 70, first of all, the width of the gap provided between the take-in roller 20 and a gate roller 30 varies. In the next step, each revolution speed of the carrying rollers 40a and 40b is adjusted for each roller.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bill processing apparatus used in, for example, financial institutions.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a bill processing apparatus used for denomination discrimination, correctness discrimination, counting, or genuine / counterfeit discrimination of bills.

The banknote handling apparatus determines the banknote supply section A in which the banknotes to be processed are set and the banknote S set in the supply section A, to determine the denomination, whether it is genuine or not, and whether it is true or false, or to make a determination. It is composed of a section B, a sorting section C that sorts according to the determination result in the determination section B, and a totaling section D that stores according to denomination, fitness and true / false. In the supply unit A, a feeding roller 1 for separating and feeding the bills S one by one, a taking-in roller 2 for taking in the bills S fed by the feeding roller 1, and a gatetro. -La 3 is arranged. still,
Each roller is formed of an elastic body such as rubber. A transport path 4 is formed between the supply unit A and the totaling unit D.

The banknotes S set in the banknote supply section A are sequentially conveyed through the conveyance path 4, and the discrimination section B discriminates the denomination, the right / wrong discrimination, and the true / false discrimination, and counts them. Are sorted by the sorting unit C in accordance with the above, and are stored in the totaling unit D by denomination, fitness, and authenticity.

The bills S set in the supply section A are fed out from the lowermost portion by the rotation of the feeding roller 1, and a gap defined between the feeding roller 2 and the gate roller 3 is provided. Is passed. When passing through the gap between the roller 2 and the roller 3, the second and subsequent banknotes S fed out along with the lowermost banknote S are stopped or reversed. -Stopped via the roller 3, separated into only one sheet, and guided to the conveyance path 4 via the intake roller 2.

By the way, the bill S has a surrounding environment, or
It is known that the physical characteristics such as the friction coefficient, the rigidity, the thickness, and the denomination greatly change due to the influence of the usage period and the like.

From this, the size of the gap is
Various bills S set in the supply section A must be accurately adjusted so that they can be stably taken in even under complicated conditions. In addition, the above-mentioned loading roller 2
In general, the gate rollers 3 are arranged in two pairs with a distance in the direction perpendicular to the direction in which the banknotes S are passed, so that the gap formed for each pair of rollers is , Are adjusted to be equal to each other.

On the other hand, even when the gap is accurately adjusted, the friction coefficient changes due to changes in the surface condition of the roller, that is, abrasion of the rubber or changes with time of the roller. However, it may be difficult to reliably take in the banknotes S one by one. In this case, for example, a jam caused by a plurality of banknotes S biting into the gap, a double feed in which a plurality of banknotes S pass through the gap, and a difference in the size of the gap between the roller pairs are caused. Skews in which the banknotes S are conveyed obliquely, or the pitches of the banknotes S that have been taken in are uneven, and there is a problem that accurate banknote processing cannot be performed. On the other hand, a method has been proposed in which a roller moving mechanism is incorporated in the gate roller 3 and the size of the gap is independently changed for each roller pair.

According to this method, a conveyance state detector is arranged on the conveyance path 4 and skew or pitch unevenness, that is, conveyance information of the bill S conveyed on the conveyance path 4 is detected. Subsequently, based on the detected transport information, the gate roller 3 is slightly moved up and down for each pair of the two rollers, and a gap defined between the gate roller 3 and the intake roller 2 is defined. The size of is changed. In this case, the banknotes S transported on the transport path 4 are supposed to be taken in in an optimum state.

[0010]

However, even if the size of the gap between the gate roller 3 and the intake roller 2 is changed independently, the physics of the roller are different. The skew or pitch unevenness, etc. of the banknote S transported through the above-described transport path 4 due to changes in the physical characteristics over time, or banknote conditions that could not have been predicted at the time when the processing device was adjusted from the factory. May occur. In this case, since a malfunction related to bill processing is likely to occur, there is a problem that the bill processing device must be readjusted in a state of being actually used after being shipped from the factory.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bill processing apparatus capable of surely removing skew or pitch unevenness in bills conveyed on a conveying path and capable of surely conveying bills.

[0012]

SUMMARY OF THE INVENTION The present invention is directed to a feeding roller for sequentially feeding out bills placed on a bill tray, and a taking-in roll for taking in the bills fed out through the feeding roller. -A lager, and a gator roller which is opposed to the take-in roller via a gap of a desired size and which limits only one banknote to be taken in via the take-in roller; Concerning the direction in which the taken bills are conveyed, at least two conveyance rollers for arranging the bills, which are arranged at substantially symmetrical positions about the conveyance center and are rotatable independently of each other, and the conveyance rollers. A gap between the pick-up roller and the gate roller, which is opposed to each of the rollers and provides a desired frictional force to the bills conveyed through the conveyor rollers. Detects the transport status of banknotes that have passed through the A first detector that generates a status signal, a second detector that detects the transportation status of the bill passed through the transportation roller, and a second transportation status signal, the first and It is also possible to provide a bill processing apparatus having means for controlling the rotation speeds of the transport rollers independently of each other based on the first and second transport status signals supplied from the second detector. is there.

[0013]

In the bill processing apparatus of the present invention, bills conveyed on the conveying path via the first detector and the second detector arranged immediately after the take-in roller and immediately after the convey roller. Is detected. On the basis of the transport state detected via this detector, firstly, an intake roller and a gate controller are used.
The size of the gap defined with the line is changed.
Subsequently, the rotation speed of the transport roller is adjusted for each roller. Therefore, skew or pitch irregularity is removed from the bills sent from the take-in roller to the inside of the apparatus, and optimal bill processing becomes possible.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a bill supply unit of the bill processing apparatus.

The bill supply unit 2 is provided with a bill tray 4 on which bills S to be processed are placed, and is arranged to face the bill tray 4, and provides a desired load to the bills S placed on the bill tray 4. And a plurality of rollers (to be described later) for transporting the banknotes S placed on the banknote stand 4.

A material having a high coefficient of friction, such as rubber, is attached to the outer peripheral surface of one end of the bill tray 4.
A feeding roller 10 for feeding out the banknotes S placed on is arranged. The feed roller 10 is connected to a drive motor 14 via a shaft 12. In addition, the feed roller 10
Are spaced apart from each other in the direction orthogonal to the direction in which the banknotes S are transported (that is, left and right along the direction in which the banknotes S are transported) 2
Individually arranged.

A material having a high friction coefficient, for example, rubber is attached to the outer peripheral surface in the direction in which the bill S is fed out through the feeding roller 10 and is fed out through the feeding roller 10. A take-in roller 20 for taking in the bills S is arranged. The intake roller 20 is connected to a drive motor 24 via a shaft 22. The take-in roller 20 is the take-in roller 10
Similarly, the two banknotes S are arranged on the left and right along the direction in which they are conveyed.

At the upper part of the take-up rollers 20, the pick-up rollers 20 are arranged so as to face the respective take-up rollers 20 with a desired gap G therebetween, and the weight of the banknote S fed out through the take-up roller 10 is increased. A gate roller 30 is attached to prevent feeding. Similar to the feed roller 10 or the take-in roller 20, the rubber roller 30 is attached to the outer surface of the gate roller 30, for example. In this case, the friction coefficient of the rubber attached to the gate roller 30 is lower than the friction coefficient of the rubber attached to the intake roller 20, and the rubber is used. The gate roller 30 includes, for example, a one-way clutch,
It is formed so as to be rotatable only in the direction opposite to the direction in which the banknote S is conveyed.

In the direction in which the banknotes S are conveyed and after the take-in roller 20, the take-in roller 10 and the take-in roller 20 are provided.
And a transfer roller for sequentially sending the banknotes S taken in via the gate roller 30 to the inside of a banknote processing apparatus (not shown), that is, to the discriminating section arranged subsequent to the supply section. -La 40a, 40b are arranged. Conveyor rollers 40a, 40
b is at least two rotators that are rotatably formed in the direction in which the banknote S is transported, and are in a direction orthogonal to the direction in which the banknote S is transported and in a direction parallel to the paper surface of the banknote S. The banknote S shares the defined rotation axis and is arranged in a substantially symmetrical position about the transport center defined along the direction in which the banknote S is transported. Each transport roller 40a,
40b is connected to drive motors 44a, 44b capable of independently urging the respective shafts 42a, 42b via shafts 42a, 42b formed independently of each other.

The upper portion of the transport roller 40 has a shaft pressed by a load directed in a desired direction via a spring member 54.
The pinch rollers 50 are arranged so as to pass through 52 and face each of the transport rollers 40. The pinch roller 50 is brought into close contact with the carrier rollers 40a, 40b by the pressure provided from the spring member 54 to the shaft 52, and the pinch roller 50 has an outer peripheral surface substantially equal to the moving speed of the outer peripheral surfaces of the carrier rollers 40a, 40b. The moving speed is given, and the rollers are rotated as the transport rollers 40a and 40b rotate.

Between the transfer rollers 40a and 40b and the take-in roller 20, the bill S while passing through the gap G is provided.
Paper feeding state detector 60 for detecting a skewed state, pitch unevenness, or the like, and bills S that have passed through the gap G and then head toward the transport rollers 40a, 40b.
A conveyance state detector 62 for detecting skew or uneven pitch is incorporated. The take-in state detector 60 and the carrying state detector 62 are, for example, light emitting units 60a (62
a) and the light receiving portion 60b (62b) are arranged to face each other with a desired gap, and the light emitting portion 60a (62a) to the light receiving portion 60b (62b) when the banknote S passes through the gap. ) Is used to block the light
The skew or pitch irregularity of each of the banknote S while passing through the gap G and the banknote S that passes through the gap G and then goes to the transport rollers 40a and 40b is detected.

In the downstream of the conveying rollers 40a, 40b, the conveying state of the banknote S discharged from the conveying rollers 40a, 40b and sent to the not-shown discriminating section, such as skew or pitch unevenness, is confirmed. A second conveyance state detector 70 for detecting is incorporated. The second conveyance state detector 70 is, for example, a photo interrupter in which a light emitting unit 70a and a light receiving unit 70b are arranged to face each other with a desired gap, and emits light when the banknote S passes through the gap. By utilizing the fact that the light traveling from the portion 70a to the light receiving portion 70b is blocked, the carrier rollers 40a, 40b are used.
The conveyance state of the banknote S after passing through is checked. FIG. 2 shows in detail a gate roller driving device for moving the gate roller 30 in the vertical direction.

The gate roller driving device 80 has a lever 82 for rotatably holding the gate roller 30. As described above, the gate roller 30 includes, for example, a one-way clutch and is rotatably attached to one end of the lever 82 only in the direction opposite to the direction in which the bill S is conveyed via the shaft 84. Has been.

The lever 82 is a banknote S carried by the lever 82.
It is attached via a spring material 88 to one end of a fixed base 86 formed so as to be movable in a direction orthogonal to the paper surface of FIG. A parallel leaf spring 90 is further fixed to the lever 82.
The parallel leaf spring 90 provides a piezoelectric element 92 that provides a displacement for moving the lever 82 in a direction orthogonal to the paper surface of the bill S.
Is connected to the fixed base 86 via.

The piezoelectric element 92 can provide a maximum displacement of approximately 15 μm depending on the applied voltage. The displacement of the piezoelectric element 92 is expanded to a maximum of about 300 μm by the distance between the parallel leaf spring 90 and the lever 82 and the ratio of this distance to the length of the lever 82.

The fixed base 86 is fixed to the stage 94. This stage 94 is moved up and down independently of the piezoelectric element 92 via a stepping motor 96. The stepping motor 96 receives the rotation direction and the driving pulse through a stepping motor driving circuit (not shown), and thereby causes the stage 94 (that is, the lever 82) to move to the piezoelectric element.
Move in larger units (mm units) compared to 92.

The gate roller 30 is formed such that the size of the gap G between the gate roller 30 and the intake roller 20 can be changed via the piezoelectric element 92 and the stepping motor 96. For example, assembling and adjustment, Alternatively, with respect to a large displacement amount due to variations in parts, etc., with the stepping motor 96, and with respect to a small displacement amount due to the thickness of the banknote S passing through the gap G, etc., with the piezoelectric element 92. In order to provide the optimum gap G, the bill S is moved in the direction orthogonal to the paper surface of the bill S so as to face the take-in roller 20. Next, the operation of the banknote handling apparatus shown in FIGS. 1 and 2 will be described with reference to the flow chart shown in FIG.

The banknotes S set in a stacked state on the banknote stand 4 are pressed against the feeding roller 10 by the load of the backup 6. When the banknote S is set on the banknote stand 4, the gate roller drive device 80 is urged, and the gap G defined between the take-in roller 20 and the gate roller 30 is set. Is set to a desired size (STP1).

The plurality of banknotes S pressed against the feeding roller 10 are delivered toward the taking-in roller 20 in order from the lowermost bill S ₀ by the rotation of the feeding roller 10. It
When the lowermost banknote S ₀ and the banknotes S ₁ , S ₂ ... At the second or more positions from the lowermost part are fed out, the lowermost banknote S ₀ is provided from the take-in roller 20. The frictional force generated by the take-up roller 20 causes the take-up roller 20 to be conveyed along the rotation direction. On the other hand, the banknotes S ₁ , S ₂ ...
It is stopped by the frictional force from the gate roller 30 which can rotate only in the direction opposite to the rotating direction of the rotor 20 (STP2).
.

The banknote S introduced into the gap G between the take-in roller 20 and the gate roller 30 is introduced into the gap between the light emitting part 60a and the light receiving part 60b in the take-in state detector 60. . By passing the bill S through this gap, the light emitting unit 60a
The light from the light receiving section 60b is blocked and the gap G
A first conveyance state signal indicating the conveyance state of the banknote S while it is being passed through is output (STP3). The banknote S is subsequently guided to the conveyance state detector 62 arranged downstream of the take-in state detector 60. The transport state detector 62 outputs a second transport state signal in the same manner as the take-in state detector 60 (STP4). The second conveyance state signal from the conveyance state detector 62 is the conveyance roller 40a, which will be described later.
It is also used to control the rotation speed of 40b.

Based on the first and second carrier state signals, a signal processing circuit (not shown) drives the gate roller drive device.
A gap control signal for urging 80 is output, and at least one of the gate roller drive devices 80 arranged at a distance in the direction orthogonal to the direction in which the bill S is conveyed is urged. . That is, firstly, the gate roller drive device
By rotating the stepping motor 96 of 80 in a desired direction, the stage 94 (lever 82) is moved in the direction orthogonal to the paper surface of the bill S, and the gate roller 30 and the take-in roller are taken. The gap G between 20 and 20 is adjusted relatively roughly (ST
P5). Subsequently, by applying a desired voltage to the piezoelectric element 92, the lever 82 is moved in a direction orthogonal to the paper surface of the banknote S within a limit of about 300 μm (STP).
6). Therefore, the gap G between the gate roller 30 and the take-in roller 20 is adjusted so as to provide the optimum gap and friction for the bill S passed through the gap G.

The banknotes S that have passed through the gap G and are separated into only one sheet and that have passed through the transport state detector 62 are in the state of being placed on the banknote stand 4 or in the feeding roller. In a state where the skew or pitch unevenness is removed in a state of being fed out through the transfer rollers 40a, 40b.
It is transported toward (STP7).

The transport rollers 40a and 40b are independent of each other in accordance with a rotation speed signal output from a motor drive circuit (not shown) based on the second transport status signal output from the transport status detector 62. Drive motors 44a, 44 whose rotation speed is controlled
b and the shafts 42a and 42b, respectively, to rotate at an optimum rotation speed (STP8).

The bill S is guided to the transport rollers 40a, 40b to which a desired pressure (friction force) is given by pressing the pinch roller 50 through a spring material (for example, a leaf spring) 54. , The transfer rollers 40a, 40b and the pinch roller 50 are passed through a pressure area.

The bill S passed through the pressure area is guided to the second conveyance state detector 70 arranged immediately after the pressure area, and the bill S passed through the pressure area is conveyed. Is detected (STP9). This second transport state detector 70
Outputs a third conveyance state signal indicating the conveyance state of the banknote S immediately after passing through the pressure area. The third transport state signal is the drive motors 44a and 44b (that is, the transport rollers) rotated at a desired rotation speed based on the second transport state signal output from the transport state detector 62.
40a, 40b) rotation speed is newly corrected
(STP10).

The banknote S, which has passed through the pressure area between the transport rollers 40a and 40b and the pinch roller 50 and is discharged from the transport rollers 40a and 40b, is surely free from skew or pitch unevenness. Then, the sheets are successively conveyed to the discriminating section, the sorting section and the totalizing section following the latter stage (STP11). The above series of operations is repeatedly executed for all the bills S placed on the bill stand 4 (STP12).

In the above description, the banknote handling machine normally used inside a financial institution such as a bank has been described. However, for example, an AT used in a cash transaction with a user.
It goes without saying that it may be used for an M device or a CD device.

[0038]

As described above, according to the present invention,
The bills fed out by the sending roller can be changed according to the state of the bills passed through the take-in roller.
By passing through the gap defined between the la and the take-in roller, double feeding, skew or uneven pitch is removed. The banknotes that have passed through the gap are conveyed to the inside of the apparatus via two conveyance rollers whose rotation speeds can be controlled independently of each other. Immediately before and after the transport roller,
A detector for checking the transport state of the banknotes immediately before being guided to the transport roller and immediately after being discharged from the transport roller is incorporated, and the number of rotations of the transport roller is set to each roll.
It is accurately adjusted independently for each la. Therefore, it is possible to stably take in and carry bills.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the configuration of a bill supply unit that is a part of a bill processing apparatus that is an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a configuration of a gate roller driving device incorporated in the bill supply unit shown in FIG.

FIG. 3 is a flowchart showing the operation of the bill supply unit shown in FIGS. 1 and 2.

FIG. 4 is a schematic cross-sectional view showing an example of a banknote processing device that has been conventionally used.

[Explanation of symbols]

2 ... Banknote supply unit, 4 ... Banknote stand, 6 ... Backup, 10 ...
Feeding roller, 12 ... Shaft, 14 ... Drive motor, 20 ... Take-in roller, 22 ... Shaft, 24 ... Drive motor, 30 ...
Rollers, 40a, 40b ... Conveying rollers, 42a, 42b ... Shafts, 44a, 44b ... Driving motors, 50 ... Pinch rollers, 52
... Shaft, 54 ... Spring material, 60 ... Capture state detector, 60a
... Light emitting part, 60b ... Light receiving part, 62 ... Transport state detector, 62a ...
Light emitting part, 62b ... Light receiving part, 70 ... Second conveyance state detector, 70
a ... light emitting part, 70b ... light receiving part, 80 ... gate roller driving device, 82 ... lever, 84 ... shaft, 86 ... fixing base, 88 ... spring material, 90 ... parallel leaf spring, 92 ... piezoelectric element, 94 ... Stage, 96
… Stepping motor.

Claims (1)

[Claims] 1. A feeding roller for sequentially feeding bills placed on a bill tray, a taking-in roller for taking in the bills fed through the feeding roller, and a taking-in roll. A gator roller which faces the la through a gap of a desired size and restricts only one bill to be taken in through the take-in roller, and the taken-in bill is conveyed. At least two of them are arranged substantially symmetrically with respect to the conveyance direction about the conveyance center as an axis,
Conveyor rollers that convey the banknotes that are rotatable independently of each other, and a desired frictional force is provided to the banknotes that are opposed to the conveyor rollers and that are conveyed through the conveyor rollers. A pinch roller, and a first detector that detects the transport state of the bill passed through the gap between the take-in roller and the gate roller and that generates a first transport state signal, A second detector that detects the conveyance state of the banknotes that have passed through the conveyance roller and that generates a second conveyance state signal, and the first and second detectors that are supplied from the first and second detectors. Means for controlling the rotation speeds of the transport rollers independently of each other based on the second transport state signal.