JP2003081461A - Paper removal equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a sheet taking-out device capable of taking out sheets one by one stably and reliably over a long period of time without being affected by the thickness, coefficient of friction, and length of sheets. The purpose is to provide. A pick-up roller for feeding paper sheets is provided.
And a take-out roller 30 that takes out the paper sent by the pick-up roller by rotating the paper, and presses against the take-out roller to apply a reverse rotation torque in a direction opposite to the take-out direction of the paper to take out the paper. The reverse rotation roller 31 that separates sheets one by one, the conveyance roller 34 that conveys the paper sheet taken out by the take-out roller, the second detection sensor 77 that detects the paper sheet carried out by the conveyance roller, and the second detection sensor 77 And a controller that reversely rotates and stops the take-out roller based on the detection of the rear end of the paper sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet take-out apparatus, and more particularly to a paper sheet take-out apparatus for taking out paper sheets such as stacked banknotes one by one.

[0002]

2. Description of the Related Art As a paper sheet take-out device of this type, for example, a friction type take-out device for taking out paper sheets by a frictional force of a rubber roller is known. As described above, in the paper sheet take-out device, it is required that the paper sheets can be reliably separated and taken out without skew. Further, there is a demand for a paper sheet that can be taken out stably without being influenced by the thickness and friction coefficient of the paper sheet, and that is not influenced by the type and size of bills. On the other hand, from the viewpoint of the processing capacity of the take-out device, it is desired to be able to take out a large number of paper sheets within a unit time.

By the way, there are two types of paper take-out methods, such as a gate roller method and a pressure contact roller method, depending on the structure of the separating portion, and the former method is generally used.

The gate roller type take-out device is provided with a take-out roller and a gate roller provided so as to face the take-out roller. The take-out roller and the gate roller are
The teeth are arranged in a comb-like shape, and a three-dimensional gap is formed between them.

Paper sheets are loaded into a supply unit in a stacked state and are delivered as the pickup roller, which is a delivery roller, rotates. The fed paper sheets are passed through the gap between the take-out roller and the gate roller, and are sequentially separated and taken out from the stacked paper sheets by the frictional force of the gate roller. The paper sheets taken out by the take-out roller are nipped and conveyed by a drive roller provided in the take-out direction of the take-out roller and a pinch roller in contact with the drive roller.

However, since the gate roller system has a structure in which the paper sheets are separated by the frictional force generated by the gap, it is easily affected by the thickness of the paper sheets. That is, there is an optimum gap for the thickness of the paper sheets, but paper sheets thicker or thinner than this gap are likely to cause separation failure.

This is because thick paper sheets and thin paper sheets have different pressing forces against the paper sheets generated between the take-out roller and the separation roller. Usually, if the gap is too wide, the separation force will be reduced and double picking will easily occur. On the other hand, if the gap is too narrow, the passage resistance increases, and it becomes impossible to feed the paper sheets by the pickup roller, which causes skipping and defective take-out.

Further, the conveying speed of the paper sheets taken out is
It is often equal to or faster than the take-out speed of paper sheets. Therefore, when the paper sheet passing through the gap is pulled out by the drive roller and the pinch roller, if the gap is small, the resistance becomes large, which causes stagnation of the paper sheet and a pickup failure such as skew.

Further, in the case of a bill having a thickness distribution due to printing, such as a bill, a difference in resistance is generated between the left and right sides of the bill, and skew is likely to occur. Further, since the gate roller always slides on the paper sheets, it easily wears, and if worn, the gap widens. The gap can be adjusted, but it must be constantly adjusted to maintain an optimum value, which is troublesome for maintenance.

In order to solve such a problem, a press contact roller type sheet take-out device has been developed. The pressure contact roller system is provided with an idle roller and a pressure roller pressed against the idle roller, and separates the paper sheets by the frictional force of the pressure roller. The pressure contact roller system has an advantage that the pressing force of the paper sheet between the idle roller and the pressure contact roller can be made constant, and thus the thickness of the paper sheet is unlikely to be affected. The drive roller, which is coaxial with the idle roller, forms a conveyance path together with the pinch roller and conveys the separated paper sheets.

[0011]

However, in the pressure contact roller system, the contact portion between the idling roller and the pressure contact roller has only resistance to the paper sheet, and does not have the feeding force of the paper sheet. Therefore, when the paper sheet is fed to the contact portion between the idling roller and the pressure contact roller by the rotation of the pickup roller, the weak contact sheet such as a circulating bill may buckle due to the resistance of the pressure contact roller. Further, there is a problem that the tip of the paper sheet is curled or scratched.

In both the gate roller system and the pressure contact roller system, the gate roller and the pressure contact roller that give the separating force to the paper sheets are required to have an appropriate friction coefficient.
Further, it is necessary to increase the frictional force between the separation roller and the paper sheets to be larger than the frictional force between the paper sheets generated in the separation section and reduce the resistance of the paper sheets to pass through.

Therefore, when selecting the material of the gate roller and the pressure roller, it is necessary to select from a limited range from the viewpoint of the coefficient of friction. Further, there is a problem that the separation force is affected if the friction coefficient changes due to wear or aging.

Further, in both the gate roller system and the pressure contact roller system, the distance between the pickup roller and the drive roller between the pickup roller and the drive roller is unstable because the paper sheet conveying force in the separating section is not sufficient or unstable. Is shorter than the length of the paper sheet in the conveying direction. As a result, the pickup roller or the drive roller constantly applies a conveying force to the paper sheets.

However, if the length of the paper sheet in the conveying direction is shorter than the distance between the rollers, the diameters of the pickup roller, the take-out roller, the drive roller, etc. must be sacrificed or they must be arranged in a nest. There is a problem that layout restrictions are imposed. Also, when the length in the transport direction differs depending on the bill type such as bills, if the distance between rollers is adjusted to the shortest bill type, there is a problem that the taking out of long bills becomes unstable, and the system is unbalanced. .

On the other hand, in both the gate roller system and the pressure contact roller system, the paper is fed by the pickup roller. Therefore, especially when there is a pair of left and right pickup rollers, the pair of pickup rollers are pressed against the paper. Different pressures on the left and right cause skew. If the paper sheet has a crease or the paper sheet is set to be inclined, the pickup roller does not contact the paper sheet evenly on the left and right.

This phenomenon becomes remarkable when the number of sheets set is large. If the number of paper sheets is large,
The pressing force on the pickup roller is reduced by the frictional force between the tray or the wall on which the paper sheets are set and the wall surface, and the pressing force on the left and right pickup rollers may be uneven.

Further, due to the difference in the thickness distribution of the ink intaglio printed on the paper sheets, the pressing force of the paper sheets against the pickup roller becomes non-uniform when the number of paper sheets increases. For example, in the case of a government-sealed ticket or a new bill, there are cases in which the directions of the paper sheets (front and back, left and right, top and bottom) are aligned and many sheets are set at once and used. 1000-200 paper sheets
When 0 sheets are piled up, the unevenness of the bundle thickness is several mm to ten and several meters.
In some cases, it reaches m and does not contact the pickup roller on one side.

Intaglio printing of paper sheets causes not only the thickness but also the distribution of the friction coefficient with respect to the pickup roller. Therefore, the left and right non-uniformity of the feed force by the pickup roller may be further increased depending on the overlap of the two distributions. Conventionally, some measures have been taken against such non-uniformity of the pressing force of the paper sheets against the pickup roller.

The paper sheet is pressed against the pickup roller by pressing the backup plate. The pressing force of the backup plate is controlled by a spring and a motor. At this time, the pressing force is set higher. This is to correct the peculiarities of the paper sheets so that they are brought into more uniform contact with the pickup roller. Further, it also has the purpose of compensating for the decrease in pressing force due to friction on the tray or the wall surface.

However, if the pressing force of the paper sheets is increased, the feeding force of the pickup roller is increased, and the margin for taking two sheets of paper sheets is narrowed.
In order to solve this, a backup plate that presses the paper sheets against the pickup roller is supported by a fulcrum so as to form a left and right seesaw, or an elastic body such as a sponge is attached to the backup plate. This method is effective when the number of paper sheets is small, but
The effect is less as the number increases from 0 to 2000. When the shake angle of the seesaw is large, the entire bundle of paper sheets is inclined like a rigid body, contact with the pickup roller is not improved, and adverse effects may be caused. Therefore, the swing amount cannot be increased so much.

In addition, a method of increasing the rubber thickness of the pick-up pill roller, moving it in the left-right pressing direction, or supporting it in a seesaw type is also used. In order to improve the contact of a large number of sheets, it is necessary to move the positions of the left and right rollers largely, and the seesaw type is effective. However, since the swing amount is restricted due to the phase relationship with the take-out roller and the like, the left and right pressures cannot be perfectly balanced.

Further, in the gate roller system, the left and right gaps can be controlled by an actuator, and the amount of skew of the taken out paper sheet is detected to control the amount of gap. However, this method is to control the gap amount for the subsequent sheets based on the information of the already extracted sheets. Therefore, although it is possible to cope with the wear of the gate roller and the average change of the thickness of the paper sheet, it is difficult to correct the skew due to the non-uniform pressing of each paper sheet.

The present invention has been made in view of the above-described problems, and is stable and reliable for a long period of time without being affected by the thickness, friction coefficient, and length of paper sheets.
An object of the present invention is to provide a paper sheet takeout device that can take out sheets one by one.

[0025]

In order to solve the above-mentioned problems, the present invention provides a paper sheet take-out device according to claim 1,
A delivery roller for delivering the paper sheets, a take-out roller for taking out the paper sheets delivered by the delivery roller by rotation, and a rotational torque in a direction opposite to the take-out direction of the paper sheets by being pressed against the take-out roller. Separation roller that separates the paper sheets one by one by being carried, a conveyance roller that conveys the paper sheet taken out by the take-out roller, and a detection unit that detects the paper sheet taken out by the conveyance roller And a control means for causing the take-out roller to reversely rotate and stop based on the detection means detecting the rear end portion of the paper sheet.

According to a third aspect of the present invention, there is provided a paper sheet take-out device for delivering a paper sheet, a take-out roller for taking out the paper sheet delivered by the send-out roller by rotation, and a pressure contact with the take-out roller. Then, the rotation torque is applied in the direction opposite to the take-out direction of the paper sheet, so that the paper sheet is
Separation rollers for separating the sheets one by one, detection means for detecting the paper sheets taken out by the take-out roller, and reverse rotation of the take-out roller based on the detection means detecting the rear end portion of the paper sheets. And a control means for stopping it.

According to a fourth aspect of the present invention, there is provided a paper sheet take-out device, a delivery roller for delivering paper sheets, a take-out roller for taking out the paper sheets delivered by the delivery roller, and a pressure contact with the take-out roller. Then, the rotation torque is applied in the direction opposite to the take-out direction of the paper sheet, so that the paper sheet is
A separation roller that separates the sheets one by one, a conveyance roller that conveys the paper sheets taken out by the take-out roller, and a paper sheet taken out by the take-out roller that is provided between the take-out roller and the conveyance roller. First detecting means for detecting, and second detecting means provided on the carry-out side of the carrying roller for detecting paper sheets carried out by the carrying roller,
Control means for rotating the take-out roller in the reverse direction and stopping it based on the fact that the first detecting means detects the rear end portion of the paper sheet.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a paper sheet take-out device according to an embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, a case 1 of a banknote sorting machine to which a paper sheet take-out device, for example, a bill take-out device is applied.
Has a table portion 1A provided at the central portion on one side thereof. The table unit 1A includes a bill supply unit 2. The bill supply unit 2 stores a plurality of bills P as paper sheets in an upright position. The banknote P is pressed against a pickup roller 5 as a feed roller by a backup plate 4 as a pushing means biased by a spring 3. The pick-up roller 5 rotates to send the banknote P downward. Below the pickup roller 5, a separating unit 32 and a conveying unit 37 (shown in FIG. 2) that constitute a paper sheet take-out device, which will be described in detail later, are provided.

The clamp type conveyance mechanism H is composed of the belt 6 and the roller 7, and conveys the banknote P conveyed from the conveyance section 37. The conveyance mechanism H is provided with a posture correction device 8 that automatically corrects the shift and skew of the banknote P taken out. A discriminating unit 9 is provided on the downstream side of the transport mechanism H in the bill transport direction. The discriminating unit 9 reads various information from the front and back surfaces of the banknote P conveyed by the roller pair 10, performs a logical operation on the information, and compares the information with reference information to determine whether there is dirt or damage, the amount of money, or the top and bottom. Also, the front and back are discriminated in four directions.

On the downstream side of the discriminating section 9 in the bill transport direction, the first
A branching device 11 is provided. The first branching device 11 is
According to the determination of the determination unit 9, the one that is not determined as the true banknote P, such as a banknote of a large ski or a certain size or larger, is guided to the reject box 12, and the one that is determined as the correct banknote P is the second branching device 13 Lead to.

The second branching device 13 sorts the conveyance direction of the banknote P into the first and second directions. A left-right inversion path 14 is provided in the first direction, and the left-right inversion path 14 is
It has a pinhole belt 15 which reverses the banknote P 180 degrees left and right. A belt conveyor 16 is provided in the second direction, and the belt conveyor 16 conveys the banknote P as it is.

On the downstream side of the first and second directions, there is provided a merging section 17 for merging the banknotes P branched and conveyed in the respective directions. The path lengths of the branch paths to the merging unit 17 are formed so that the intervals after the banknotes are merged do not shift.

A third branching device 18 is provided on the downstream side of the merging section 17 in the bill transport direction.
The conveyance direction of the bill P is sorted into the third and fourth directions.
The switchback path unit 19 is provided in the third direction. The switchback path unit 19 is provided with a reversing box 20 for introducing the banknotes P and a ratchet wheel 21 for pressing the rear end of the banknotes P guided to the reversing box 20 against the reversing roller 21a. In the switchback pass unit 19, the bill P
Is sent out from the reversal box 20, the banknote P is inverted and conveyed. In the fourth direction, the belt conveyor 22
Is provided, and the belt transport unit 22 transports the banknote P while maintaining its posture.

On the downstream side in the third and fourth directions, there is provided a merging section 23 for merging the banknotes P branched and conveyed in the respective directions. The path lengths of the branch paths to the merging section 23 are formed so that the intervals after the banknotes are merged do not shift.

A horizontal transport path 24 is provided on the downstream side of the merging section 23 in the bill transport direction. In the horizontal transport path 24, the number of branching devices 2 is one less than the number of parts to be divided.
5a to 25d are arranged. These branching devices 25a
First to fourth type pocket portions 26a to 26d are provided as the accumulating portions in the lower portion of 25 to 25d. The banknotes P are stacked and accumulated in a horizontal state in the type-specific pockets 26a to 26.

A sealing device 27 is provided below the first branching device 25a. This sealing device 27 is used for bill P
A stacking unit 28 for stacking and sorting 100 sheets of paper, a transport unit 28a for transporting the banknotes P from the stacking unit 28, and a winding unit for binding the banknotes P transported by the transport unit 28a with a paper band 29a. And 29.

FIG. 2 is a diagram schematically showing the structure of a paper money takeout device as a paper takeout device.

This bill take-out device is composed of the above-mentioned pickup rollers 5 and 5, the separating section 32 and the conveying section 37, and these pickup rollers 5 and 5 and the separating section 32.
The transport unit 37 is arranged along the vertical direction.

The separating unit 32 includes take-out rollers 30 and 30. Reverse rollers 31 and 31 as separating rollers are pressed against these take-out rollers 30 and 30. The transport unit 37 is a drive roller 3 that functions as a transport roller disposed below the take-out rollers 30 and 30.
4, 34 are provided. These drive rollers 34,
Pinch rollers 35, 35 are in rolling contact with 34.

The bill P is pulled out and conveyed by the drive rollers 34, 34 and the pinch rollers 35, 35. The pickup roller 5, the take-out roller 30, the reverse rotation roller 31, the drive roller 34, and the pinch roller 35 are
The banknotes P are taken out one by one on the left and right and taken out in the lateral direction.

The take-out roller 30 of the separating portion 32 has a peripheral surface made of rubber and is attached to the shaft 36 via a one-way clutch 30a. The take-out roller 30 can freely rotate in the take-out direction of the banknote P, and is devised to reduce resistance when the banknote P is pulled out by the drive roller 34 and the pinch roller 35. The shaft 36 is a bearing 38.
It is attached to the frame 39 via. A take-out motor 41 is connected to one end of the shaft 36 via a pulley 40a, a timing belt 40b, and a pulley 40c.

Although the one-way clutch 30a is provided on the take-out roller 30 in this embodiment, the one-way clutch 30a is fixed to the shaft 36 and the one-way clutch 30a is provided on the timing pulley 40a so that the shaft 36 and the pulley 40a are connected to each other. It may be possible to rotate between.

The shaft 43 of the pickup roller 5 is connected to the shaft 46 via a pulley 45a, a timing belt 45b, and a pulley 45c. Both ends of the shaft 46 are supported by the frames 39, 39. A pickup motor 49 is connected to one end of the shaft 46 via a pulley 48a, a timing belt 48b, and a pulley 48c. The shaft 43 is rotatably attached to the bracket 51. The bracket 51 is attached to the bracket 53 via a shaft 52.

The bracket 53 is attached to the frames 39, 39 via a shaft 46 and is provided so as to be rotatable left and right. A compression spring 56 is provided between the bracket 51 and the stay 55. As a result, the left and right pickup rollers 5 and 5 are slightly changed in position in the front-rear direction and the left-right direction to generate a uniform pressing force to the banknote P.

The reverse rotation roller 31 is entirely formed of rubber. This rubber has a coefficient of friction with respect to the banknotes P higher than that between the banknotes P. The reverse rotation roller 31 is rotatably attached to the upper end of the swing lever 59 via a shaft 58. A lower end portion of the swing lever 59 is rotatably supported by a shaft 60 as a support portion. The swing lever 59 is urged by a spring 62 to press the reverse roller 31 against the take-out roller 30.

A pulley 63 is attached to the shaft 58 of the reverse rotation roller 31.
The reverse motor 64 is connected via a, the timing belt 63b, and the pulley 63c. The reverse motor 64 rotates the reverse rotation roller 31 in a direction opposite to the takeout direction of the banknote P. As will be described later, the reverse rotation roller 31 rotates in the removal direction along with the removal roller 30, but the reverse rotation torque is always applied in the reverse direction and generates a separating force for the banknote P.

The timing pulley 63a fixed to the shaft 58 of the reverse rotation roller 31 and the drive shaft 6 of the reverse motor 64.
The pitch diameter of the timing pulley 63c attached to 4a is the same. The reverse motor 64 is fixed to the stay 67 so that the shaft center of the swing lever 59 is positioned on the shaft center of the drive shaft 64a.

The drive roller 34 is swung by the frames 39, 39 via a shaft 69. The shaft 69 is connected to the carry motor 71 via a pulley 70a, a timing belt 70b, and a pulley 70c. The pinch roller 35 is rotatably supported by the shaft 73. Both ends of the shaft 73 are supported by the horizontal elongated holes 39 a of the frames 39, 39 and are urged by springs 74. The pinch roller 35 is pressed by the drive roller 34 by the urging force of the spring 74 to generate a conveying force.

In the vicinity of the take-out roller 30 and the reverse rotation roller 31, a first detection means (or a detection means) for detecting the bill P sent from the take-out roller 30 and the reverse rotation roller 31.
The 1st detection sensor 76 which functions as is provided.
In the vicinity of the drive roller 34 and the pinch roller 35,
Second detection means (or detection means) for detecting the bill P sent out from the drive roller 34 and the pinch roller 35
A second detection sensor 77 that functions as is provided.

The first and second detection sensors 76 and 77 are, for example, light transmission type optical sensors, and are attached to the bracket 79. The optical axis of the first detection sensor 76 passes through the conveyance path between the contact portion of the take-out roller 30 and the reverse rotation roller 31 and the contact portion of the drive roller 34 and the pinch roller 35. The optical axis of the second detection sensor 77 passes through the conveyance path immediately after the contact portion between the drive roller 34 and the pinch roller 35.

Pickup motor 41, pickup motor 4
9 and the conveyance motor 71 have a driver 81,
82 and 83 are connected. Drivers 81, 82, 8
A controller 85, which functions as a control unit, is connected to 3 via a control circuit. The take-out motor 4
1 and the pickup motor 49 are pulse motors because intermittent drive control is required.

Drivers 89a and 89b are connected to the left and right reverse motors 64, and a controller 85 is connected to the drivers 89a and 89b via a control circuit. The reverse motor 64 is a DC motor whose current can be controlled, and a required generated torque can be obtained by setting the current. A drive amplifier 90 is connected to the first and second detection sensors 76 and 77, detects passage of the banknote P, and outputs information based on the detection result to the controller 85.

Next, with reference to FIGS. 3 to 6, the separating section 32
The principle of generation of the separating force in will be described.

FIG. 3 shows a take-out roller 30 and a reverse roller 31.
It is a figure which shows when there is no banknote P between and, and the reverse rotation roller 31 follows in the conveyance direction with rotation of the take-out roller 30. The reverse rotation roller 31 is pressed against the take-out roller 30 with a predetermined pressing force H, and reverse rotation torque T is applied by the reverse motor 64. However, the reverse roller 31
Since the torque due to the tangential force, which is a frictional force with the take-out roller 30, is higher than the reverse rotation torque T, the reverse motor 6
4 slides and rotates in the transport direction as the take-out roller 30 rotates.

FIG. 4 shows a take-out roller 30 and a reverse roller 31.
It is a figure which shows the time when one banknote P was interposed between and,
The reverse rotation torque T is larger than the torque applied to the reverse rotation roller 31 by the tangential force generated by the frictional force between the bill P and the reverse rotation roller 31.
Is set to be small, the reverse rotation roller 31 is rotated in the transport direction via the banknote P.

FIG. 5 shows the take-out roller 30 and the reverse roller 31.
It is a figure which shows the case where two banknotes P are interposed between and, and since the frictional force produced between banknotes P1 and P2 is small,
The torque T of the reverse motor 64 wins and begins to reverse in the transport direction.

FIG. 6 is a view showing a state in which the second bill P2 is pulled back by the reverse rotation of the reverse motor 64. The state of FIG. 6 is almost the same as the state of FIG. 4, and the first bill P1 is conveyed along the conveying direction. Even if two banknotes are to be taken out in this way, the second banknote P2 is pulled back by the reverse rotation roller 31 and only the first banknote P1 is taken out. Actually, the states of FIG. 5 and FIG.
Every time one banknote P is taken out, it is vibratingly repeated in small steps, and the banknotes P are separated and taken out one by one.

The tangential force that the second bill P2 receives from the reverse rotation roller 31 acts as a separating force. The apparent friction coefficient of the reverse roller 31 due to this tangential force and pressing force is
(Reverse rotation torque / Reverse rotation roller radius) / (Pressing force of reverse rotation roller to take-out roller). Take-out roller 3 of reverse rotation roller 31
The pressing force to 0 is generated by a constant spring force. Therefore, by controlling the reverse rotation torque to be constant, the apparent friction coefficient of the reverse rotation roller 31 can be kept constant, and a stable separation force can be given.

By changing the reverse rotation torque, an apparent friction coefficient can be set. The friction coefficient between the take-out roller 30 and the reverse rotation roller 31 may be higher than the friction coefficient between the bills P1 and P2. Extraction roller 30 and reverse rotation roller 31
If the friction coefficient with is high, the feed force and separation force can be kept stable.

Unlike the gate roller, the reverse roller 31 does not need to maintain a medium coefficient of friction, and the range of selection of materials is widened. Further, the reverse rotation roller 31 does not always slide with the banknote P like the gate roller does, and in principle does not slide with the banknote, which is advantageous in terms of wear resistance. The reverse rotation roller 31 actually slips with respect to the take-out roller 30 and the banknote P, but in consideration of this, a material having good durability may be selected.

FIG. 7 and FIG. 8 are diagrams showing the layout of each roller of the bill take-out device.

A bill detection sensor S for detecting whether or not the bill P pressed by the backup plate 4 exists near the pickup roller 5. The bill detection sensor S is, for example, a light transmission type optical sensor.

The pick-up roller 5 comes into contact with the banknote P pressed by the backup plate 4 and rotates to feed the banknote P into the separating section 32 and feed the banknote P in cooperation with the take-out roller 30. Reverse roller 3
1, the reverse torque is applied during the take-out operation,
The reverse rotation torque is set so that when the bill P is not present, the take-out roller 30 is rotated. In the motor reverse roller (MRR) separation method, it is necessary to stably apply the pressing force to the take-out roller 30 and the reverse torque generated by the motor 64 to the reverse roller 31.

By the way, in order to obtain a stable pressing force without being influenced by the bill P and the generated torque, the layout of the rollers is important, and the following is taken into consideration.

That is, the bill P on the pickup roller 5
Contacting part, take-out roller 30 and reverse rotation roller 31
The line segment connecting between the contact portion 33 and the contact portion 33 is K1, and the take-out roller 3
K the line segment connecting the center of 0 and the center of the reverse roller 31
2. If the line segment connecting the center of the reverse rotation roller 31 and the rotation center 60 of the swing lever 59 is K3, the line segment K1 and the line segment K
It intersects with 2 at an angle of about 90 °.

That is, the take-out roller 30 and the reverse rotation roller 31
The common tangential direction to and is the conveyance direction of the banknote P. This is the contact portion 33 between the take-out roller 30 and the reverse rotation roller 31.
This is for facilitating the feeding of the banknotes P to the banknotes and for suppressing the resistance received by the banknotes P stacked by the banknotes P returned by the reverse rotation roller 31.

The line segment K2 and the line segment K3 intersect at an angle of approximately 90 °. This is to prevent the frictional force generated in the separating portion 32 from affecting the pressing force of the reverse rotation roller 31. Friction force f acting on the surface of the reverse rotation roller 31
The moment generated by the reverse rotation roller 31 is balanced with the torque of the reverse motor 64 connected via the timing belt 63b. After all, the swing lever 59 has
A force f ′ having the same magnitude as the frictional force f acts via the shaft 58.

Further, by setting the intersection angle of the line segment K2 and the line segment K3 to 90 °, the vector of this force f'passes through the rotation center 60, so that the swing lever 59 can be rotated. There is no. Therefore, the pressing force generated at the contact portion 33 between the take-out roller 30 and the reverse rotation roller 31 can be kept constant. It is also important that the motor 64 be fixed to the stay 67 so as not to swing together with the reverse rotation roller 31.

The contact pressure between the take-out roller 30 and the reverse roller 31 depends on the spring force of the spring 62 and the spring 6.
It is determined from the mounting position of No. 2 and is constant without being affected by the rotation of the motor 64 and the frictional force on the roller surface.

FIG. 9 and FIG. 10 are views showing the pressure contact state between the take-out roller 30 and the reverse rotation roller 31.

The diameter of the timing pulley 63c on the side of the motor 64, which transmits the driving force from the motor 64 to the reverse rotation roller 31, is the same as the diameter of the timing pulley 63a on the side of the reverse rotation roller 31, and is pressed by the tension vector T of the timing belt 63b. It is designed to be orthogonal to the vector N.

Here, the magnitude of the pressing vector N will be derived.

From the balance of the force applied to the swing lever 59, NF + Rx = 0 formula (1) -μN-T / e + Ry = 0 formula (2) μN, T / e acts via the shaft 58 of the reverse rotation roller 31, and its vector becomes zero because it passes through the fulcrum 60, and −Nb + Fc = 0 equation (3) N = (c / b) F equation (4) Become.

Therefore, a constant pressing force N can be applied regardless of the friction coefficient μ and the torque T.

Here, N: pressing force, a: roller radius, μ
N: tangential force, b: distance from fulcrum to pressing part, F: spring force, c: distance from fulcrum to spring, T / e: tension of timing belt (correctly tension difference), e: pitch of timing pulley Radius, T: Motor reverse torque, Rx, R
y: Horizontal and vertical components of the force that the swing lever receives from the fulcrum.

Next, the first control method for the bill take-out operation will be described with reference to the flow chart shown in FIG. Note that the first control method is the drive roller 34
And the second detection sensor 77 arranged on the carry-out side of the pinch roller 35 only.

That is, when the start of the operation for taking out the bill P is requested (step S1), the controller 85 determines whether or not there is the bill P to be taken out based on the output signal from the bill detecting sensor S (step S2). . Controller 8
When determining that there is a bill P to be taken out (step S2, YES), the control unit 5 controls the driving of each roller to take out the bill P.

First, the controller 85 uses the reverse rotation motor 6
4 is driven to rotate the reverse rotation roller 31 in the reverse direction (step S3). At this time, the pickup roller 5 and the take-out roller 30 are stopped. Therefore, the reverse rotation roller 31 does not rotate due to the resistance force received from the take-out roller 30.

Subsequently, the controller 85 drives the take-out motor 41 and the pickup motor 49 (step S4). As a result, the take-out roller 30 and the pickup roller 4 are rotationally driven at a predetermined rotation speed.

Extraction motor 41 and pickup motor 4
In No. 9, the speed is increased by almost the same rising curve to the predetermined speed. The take-out roller 30 is replaced with the reverse roller 3
Since some time is lost until the tip of the banknote P enters the separating section 32 in contact with 1, the banknote P buckles when the speed of the take-out roller 30 is slightly higher than the speed of the pickup roller 5. do not do. Therefore, the take-out motor 41
Between the pickup motor 49 and the pick-up motor 49
The reduction ratio between 0 and the pickup roller 5 is changed.

Further, the take-out speed of the bill P is set to a value smaller than the conveying speed. This is because the bill P buckles if the bill P is fed at a speed higher than that of the transport roller 34 that is constantly rotating during the take-out operation. Furthermore, setting the take-out speed of the banknote P to be small is advantageous in consideration of increasing the speed of the motor 41. However, if the speed difference is set too much, a skew may occur when the banknote P is pulled by the transport roller 34 and the pinch roller 35, and therefore, it is set to an appropriate value.

Further, normally, the leading edge of the bill P is the conveyance roller 3
4 and the pinch roller 35 are set to reach a predetermined take-out speed by the time they reach the pinch roller 35. The controller 85 is
Based on the output signal from the second detection sensor 77, when the first banknote P sent out by the pickup roller 5 and the take-out roller 30 is detected after approaching the carrying roller 34 (step S5, YES), Extraction motor 4
1 and the drive of the pickup motor 49 are stopped (step S6).

The take-out roller 30 is the one-way clutch 3
Since it incorporates 0a, even if the take-out motor 41 is stopped, it is rotated along with the bill P conveyed by the conveying roller 34, and
No resistance is given to the first bill P. After the leading edge of the first banknote P reaches the second detection sensor 77,
The rear end of the banknote P comes off the pickup roller 5.

If the bill P is long and the trailing edge of the first bill P is still on the pickup roller 5,
It acts as resistance to the first bill P. However, since the pressing force of the conveying roller 34 and the pinch roller 35 is set to be larger than the pressing force of the pickup roller 5 on the banknote P, the banknote P is slid and conveyed with respect to the pickup roller 5. When the first bill P comes off the pickup roller 5 and the second bill comes into contact with the pickup roller 5, the pickup roller 5 acts as a brake for the second bill, and the bill P is prevented from being taken out. .

The controller 85 detects that the rear end of the first banknote P being conveyed is detected (step S
(7, YES), the take-out motor 41 is reversely rotated (step S31). At this time, since the take-out roller 30 is attached to the shaft 36 via the one-way clutch 30a, the take-out roller 30 is reversely rotated by the frictional force with the reversely rotating reverse roller 31. That is, the take-out roller 30 and the reverse rotation roller 3
1 is reversely rotated together.

At this time, the controller 85 controls the driving of the take-out motor 41 to move the take-out roller 30 to a predetermined angle.
That is, 360 degrees is rotated by an indivisible angle, for example, 7 degrees. With the rotation of the take-out roller 30, the reverse rotation roller 31 is also rotated by a predetermined angle.

In this way, by rotating the reverse rotation roller 31 by a predetermined angle that is not divisible by 360 degrees, uneven wear of the reverse rotation roller 31 can be prevented, and stable separation operation can be performed for a long period of time. Become.

The controller 85 controls the drive of the take-out motor 41 to rotate the take-out roller 30 by a predetermined angle, and then stops the drive of the take-out motor 41 (step S3).
2).

Subsequently, the controller 85 determines whether or not the bill P to be taken out is in the tray based on the output signal from the bill detecting sensor S (step S8). When the controller 85 determines that there is a bill P (step S8, YES), it stops the take-out roller 30 and then returns to step S4 with an appropriate delay and restarts the drive of the take-out motor 41 and the pickup motor 49. Then 2
The operation of taking out the first bill P is performed.

When the controller 85 determines that there is no bill P in the tray (step S8, NO),
The driving of the reverse rotation motor 64 is stopped, and the reverse rotation roller 31 is stopped (step S9). After that, the controller 8
In No. 5, the driving of all the motors is stopped and the take-out operation ends (step S10).

As described above, for each banknote P, the banknote P is taken out by intermittently driving the take-out roller 30 and the pickup roller 5. Banknote P taken out earlier
After the trailing edge is detected, the next bill P is taken out, so that each bill P is taken out so that the gap (size of the gap) between the bills P becomes constant. Therefore, when the length of the bill P in the feeding direction is short, the processing speed (the number of bills taken out per unit time) is high, and when the length of the bill P in the feeding direction is long, the processing speed is low. Become.

Such control is performed by "constant gap extraction"
Called. In the flowchart shown in FIG. 11, after detecting the trailing edge of the banknote P in step S7, the reverse rotation drive and stop of the take-out motor are performed, and immediately after that, the take-out motor 41 and the pickup motor 49 are started to be driven in step S4. The size of the gap between the bills P can be set by providing an appropriate delay between them.

Of course, if the pickup motor 41 and the pickup motor 49 are started with a proper delay after the leading edge of the bill P is detected in step S5, the pitch of the leading end of the bill P becomes constant. It is also possible to control.

In the control method shown in FIG. 11, it is necessary to make the distance from the pickup roller 5 to the conveying roller 34 shorter than the length of the bill P in the feeding direction (short side direction).
This is because it is necessary for the paper money P to be constantly fed with the force for feeding the paper money P. However, when the length in the widthwise direction is different depending on the type of bill, such as a bill, the arrangement of the rollers for the shortest bill P is determined by considering the long bill P, the braking action of the pickup roller 5 is long. In many cases, it continues to be sick. In order to bring the pickup roller 5 and the carrying roller 34 closer to each other, it is necessary to reduce the diameter of each roller or arrange each roller in a nested shape.

The diameter of the roller needs to be estimated to some extent in order to improve the contact state with the bill P and secure the grip force. To place the rollers in a nest,
It is necessary to narrow the width of the roller, which is still a problem to obtain a grip force.

Since the length of the bill P in the longitudinal direction also differs depending on the bill, it is necessary to bring the roller closer to the center in order to take it out from the same tray. Further, considering the force of the bill P in the take-out direction, it is considered that the rollers should be arranged in the same phase as much as possible. When the take-out roller 30 and the pickup roller 5 have a diameter of 35 mm to 40 mm and the conveying roller 34 has a diameter of 20 mm to 30 mm, when the rollers are arranged in a line, the distance is 52.5 mm to 75 mm. When the length of the bill in the feeding direction is about 60 mm, it is difficult to perform a stable take-out operation in consideration of the contact length of each roller.

Further, in the case of the bill P having a short length in the feeding direction, when the front end of the bill P is detected by the second detection sensor 77, the condition that the rear end of the bill P is on the pickup roller 5 is more severe, The stop of the pickup roller 5 is delayed, so that the second sheet is fed, and it is easy for the zigzag to occur.

Next, the second control method of the bill take-out operation will be described with reference to the flow chart shown in FIG. The second control method considers the paper money P having a short length in the feeding direction, and includes the second detection sensor 77.
In addition, the first detection sensor 76 arranged between the take-out roller 30 and the drive roller 34 is used. That is, according to the second control method, even when the distance between the pickup roller 5 and the transport roller 34 is longer than the length of the bill P in the feeding direction (transverse direction), the taking-out operation can be stably performed.

That is, when the start of the operation of taking out the bill P is requested (step S1), the controller 85 causes the controller 85 of FIG.
Similar to the flowchart shown in FIG. 1, in order to pay out the first bill P, the control up to step S4 is performed, and the take-out roller 30 and the pickup roller 5 are rotated.

Subsequently, the controller 85 determines whether or not the leading edge of the first banknote P has been detected after passing through the take-out roller 30 based on the output signal from the first detection sensor 76 (step S21). . The controller 85 uses the bill P
If it is determined that the tip of the is detected (step S2
1, YES), only the drive of the pickup motor 49 is stopped, and the rotation of the pickup roller 5 is stopped (step S22). At this time, the banknote P is conveyed only by the conveying force of the take-out roller 30. The first banknote P receives resistance from the stopped pickup roller 5, but the carrying force of the take-out roller 30 is higher, so the first banknote P continues to be carried.

Subsequently, the controller 85 determines whether or not the leading edge of the first bill P is detected based on the output signal from the second detection sensor 77 (step S2).
3). When the controller 85 determines that the leading edge of the banknote P is detected (step S23, YES), the controller 85 stops driving the take-out motor 41 and stops the rotation of the take-out roller 30 (step S24). At this time, the banknote P is conveyed only by the conveying force of the conveying roller 34.

Subsequently, the controller 85 determines whether or not the rear end of the first bill P is detected based on the output signal from the first detection sensor 76 (step S2).
5). When the controller 85 determines that the rear end of the bill P is detected (step S25, YES), the controller 85 drives the take-out motor 41 in the reverse rotation (step S31). As a result, the take-out roller 30 is rotated in the opposite direction. Further, the reverse rotation roller 31 is rotated in the opposite direction with the reverse rotation of the take-out roller 30.

The controller 85 controls the drive of the take-out motor 41 to rotate the take-out roller 30 by a predetermined angle, and then stops the drive of the take-out motor 41 (step S3).
2).

Subsequently, the controller 85 determines whether or not the bill P to be taken out is in the tray based on the output signal from the bill detecting sensor S (step S26). When the controller 85 determines that there is a bill P (step S26, YES), it stops the take-out roller 30 and then returns to step S4 with an appropriate delay to restart the drive of the take-out motor 41 and the pickup motor 49. Then, the operation of taking out the second banknote P is performed.

When the controller 85 determines that there is no bill P in the tray (step S26, N).
O), the drive of the reverse rotation motor 64 is stopped, and the reverse rotation roller 31
Is stopped (step S27). After that, the controller 85 stops driving all the motors, and the take-out operation ends (step S28).

By the second control method, the distance between the pickup roller 5 and the conveying roller 34 can be secured sufficiently large even when processing the bill P having the shortest length in the feeding direction. In addition, by detecting the rear end of the bill P with the first detection sensor 76, the
The operation of taking out the first sheet can be performed.

As a result, in the "fixed gap extraction", the gap between bills can be made smaller and the processing speed can be increased. Further, also in the "constant pitch extraction", it becomes possible to reduce the extraction pitch of the leading edge of the bill. Further, in addition to the viewpoint of reducing the gap and the pitch, it becomes possible to make the motor start up gently.

In the second control method according to this embodiment, the rear end of the bill P is detected by the first detection sensor 76. However, when there is no request to increase the processing speed, the second control method is used. The detection sensor 77 detects the rear end of the banknote P and detects the next banknote P.
May be started.

In the second control method according to this embodiment, the reverse roller 31 is reversely rotated at the timing when the rear end of the bill P is detected by the first detection sensor 76, but the processing speed is increased. When the second detection sensor 77 detects the rear end of the banknote P, the reverse rotation roller 31 may be rotated in the reverse direction, and the operation of taking out the next banknote P may be started after the stop.

The control method described with reference to FIGS. 11 and 12 is
It is difficult to realize with a conventional take-out operation such as a gate roller method, and it is easy to carry out with an MRR take-out. In MRR extraction,
This is because the pressing force of the banknote P on the pickup roller 5 can be reduced and the feeding force by the take-out roller 30 of the separating unit can be expected. In the gate roller method and the like, the resistance of the separating portion is large, so that the bill P must be sent by the pickup roller 5, and the pressing force of the bill against the pickup roller 5 needs to be increased to some extent. In the case of banknotes, the required pressing force is about 5N.

On the other hand, in MRR take-out, since the take-out roller 30 and the reverse rotation roller 31 rotate in the separating portion, the biting force and the reverse rotation torque with respect to the bill P are maintained constant, and a stable conveying force is ensured. You can Thereby, the pressing force of the bill P on the pickup roller 5 is
It suffices to guide the leading end of the bill P to the separating portion, and may be about 1 to 2N.

In the gate roller system, the take-out roller 30 is rotating, but the gate roller is fixed, and there is not much difference in friction coefficient between the two, so the force for sending the bill P to the separating portion cannot be expected. On the other hand, in the MRR takeout, the torque is set so that a tangential force smaller than the frictional force between the takeout roller 30 and the banknote P and larger than the frictional force between the banknote P and the banknote P is generated.

Therefore, in the separating portion, the force for feeding the first bill or the first bill having two piles is stably generated.
For this reason, in the MRR takeout, the control method shown in FIGS. 11 and 12 enables stable takeout regardless of the size of the banknote P from the viewpoints of the roller layout, the start-up of the motor, and the processing capacity.

In the first and second control methods according to the above-described embodiment, the take-out roller is rotated in the reverse direction every time one bill is taken out. You may rotate it.

That is, the third control method of the bill take-out operation will be described with reference to the flow chart shown in FIG. The third control method is the drive roller 3
4 and the second detection sensor 77 arranged on the carry-out side of the pinch roller 35.

As shown in FIG. 13, when the start of the operation of taking out the bill P is requested (step S1), the controller 8
Similarly to the flowchart shown in FIG. 11, 5 performs control up to step S4 in order to pay out the first banknote P, rotates the take-out roller 30 and the pickup roller 5, and then performs the second detection in step S5. When the leading edge of the banknote P is detected based on the output signal from the sensor 77,
In step S6, driving of the take-out motor 41 and the pickup motor 49 is stopped, and in step S7, the second
Based on the output signal from the detection sensor 77, it is determined whether or not the rear end of the bill P is detected.

Subsequently, when the controller 85 determines that the rear end of the bill P is detected based on the output signal from the second detection sensor 77 (step S7, YES),
It is determined whether the number of processed bills P has reached a predetermined number n (step S33). That is, the controller 85
Is n based on the output signal from the second detection sensor 77.
It is determined whether or not the trailing edge of the first bill P is detected.

The controller 85 detects that the rear end of the nth bill P conveyed is detected (step S3).
(3, YES), the take-out motor 41 is reversely rotated (step S31). As a result, the take-out roller 30 is rotated in the opposite direction. The reverse rotation roller 31 is the take-out roller 3
With the reverse rotation of 0, it is rotated in the opposite direction.

The controller 85 controls the drive of the take-out motor 41 to rotate the take-out roller 30 by a predetermined angle, and then stops the drive of the take-out motor 41 (step S3).
2).

Subsequently, the controller 85 determines whether or not the bill P to be taken out is in the tray based on the output signal from the bill detecting sensor S (step S8). When the controller 85 determines that there is a bill P (step S8, YES), it stops the take-out roller 30 and then returns to step S4 with an appropriate delay and restarts the drive of the take-out motor 41 and the pickup motor 49. Then, the next bill P is taken out.

When the controller 85 determines that there is no bill P in the tray (step S8, NO),
The driving of the reverse rotation motor 64 is stopped, and the reverse rotation roller 31 is stopped (step S9). After that, the controller 8
In No. 5, the driving of all the motors is stopped and the take-out operation ends (step S10).

On the other hand, in step S33, if the controller 85 has not detected the trailing edge of the conveyed nth banknote P (step S33, NO), it is based on the output signal from the banknote detection sensor S. It is determined whether or not there is a bill P to be taken out in the tray (step S8), and when it is determined that there is a bill P (step S8, YES), an appropriate delay is taken after stopping the take-out roller 30. Returning to S4, when it is determined that there is no bill P in the tray (step S8, NO), the driving of the reverse rotation motor 64 is stopped (step S9), and further, the driving of all the motors is stopped to perform the take-out operation. Ends (step S1)
0).

As described above, the reverse operation of the take-out roller 30 does not have to be performed for each banknote P, but is performed for every n banknotes to prevent uneven wear of the roller and improve processing efficiency. Is possible.

Next, a fourth control method of the bill take-out operation will be described with reference to the flow chart shown in FIG.

That is, as shown in FIG. 14, when the start of the take-out operation of the bill P is requested (step S1), the controller 85 delivers the first bill P similarly to the flowchart shown in FIG. In order to perform the control up to step S4, rotate the take-out roller 30 and the pickup roller 5, and when the leading edge of the banknote P is detected based on the output signal from the second detection sensor 77 in step S5, In S6, the drive of the take-out motor 41 and the pickup motor 49 is stopped.

Subsequently, the controller 85 determines whether or not the number of processed bills P has reached a predetermined number n (step S33). That is, the controller 85 determines whether or not the rear end of the n-th banknote P is detected based on the output signal from the first detection sensor 76.

The controller 85 detects that the rear end of the nth bill P conveyed is detected (step S3).
(3, YES), the take-out motor 41 is reversely rotated (step S31). As a result, the take-out roller 30 is rotated in the opposite direction. The reverse rotation roller 31 is the take-out roller 3
With the reverse rotation of 0, it is rotated in the opposite direction. The controller 85 then stops the drive of the take-out motor 41 (step S32).

Subsequently, the controller 85 determines whether or not the bill P to be taken out is in the tray based on the output signal from the bill detecting sensor S (step S8). When the controller 85 determines that there is a bill P (step S8, YES), the controller 85 takes an appropriate delay and returns to step S4 to take out the pickup motor 41 and the pickup motor 4.
The drive of 9 is restarted, and the next bill P is taken out.

When the controller 85 determines that there is no bill P in the tray (step S8, NO),
The driving of the reverse rotation motor 64 is stopped, and the reverse rotation roller 31 is stopped (step S9). After that, the controller 8
In No. 5, the driving of all the motors is stopped and the take-out operation ends (step S10).

On the other hand, in step S33, if the controller 85 has not detected the rear end of the conveyed n-th banknote P (step S33, NO), the controller 85 outputs the output signal from the second detection sensor 77. Based on this, it is determined whether or not the rear end of the bill P has been detected.

Subsequently, when the controller 85 determines that the rear end of the bill P has been detected (step S7, Y).
ES), based on the output signal from the bill detection sensor S, it is determined whether or not there is a bill P to be taken out in the tray (step S8), and when it is determined that there is a bill P (step S).
8, YES), the process returns to step S4 with an appropriate delay, and when it is determined that there is no bill P in the tray (step S8, NO), the drive of the reverse rotation motor 64 is stopped (step S9), and The driving of all the motors is stopped, and the take-out operation ends (step S10).

As described above, the reverse operation of the take-out roller 30 does not have to be performed for each banknote P, but is performed for every n banknotes to prevent uneven wear of the rollers and improve processing efficiency. Is possible.

Next, the fifth control method of the bill take-out operation will be described with reference to the flow chart shown in FIG.

That is, as shown in FIG. 15, when the start of the operation of taking out the banknote P is requested (step S1), the controller 85 delivers the first banknote P similarly to the flowchart shown in FIG. In order to perform the control up to step S4, further, from step S21 to step S
The control up to 25 is continued.

Subsequently, the controller 85 determines whether or not the rear end of the n-th bill P is detected based on the output signal from the first detection sensor 76 (step S34).

The controller 85 detects that the rear end of the conveyed n-th banknote P is detected (step S3).
(4, YES), the take-out motor 41 is reversely rotated (step S31). As a result, the take-out roller 30 is rotated in the opposite direction. The reverse rotation roller 31 is the take-out roller 3
With the reverse rotation of 0, it is rotated in the opposite direction. The controller 85 then stops the drive of the take-out motor 41 (step S32).

Subsequently, the controller 85 determines whether or not the bill P to be taken out is in the tray based on the output signal from the bill detecting sensor S (step S26). When the controller 85 determines that there is a banknote P (step S26, YES), the controller 85 takes an appropriate delay and returns to step S4, restarts the drive of the take-out motor 41 and the pickup motor 49, and restarts the next banknote P. To take out.

If the controller 85 determines that there is no bill P in the tray (step S26, N).
O), the drive of the reverse rotation motor 64 is stopped, and the reverse rotation roller 31
Is stopped (step S27). After that, the controller 85 stops driving all the motors, and the take-out operation ends (step S28).

On the other hand, in step S34, if the controller 85 has not detected the rear end of the conveyed nth banknote P (step S34, NO), the controller 85 determines the output signal from the banknote detection sensor S. It is determined whether or not there is a bill P to be taken out in the tray (step S26), and the bill P
If it is determined that there is (step S26, YE
S), after returning to step S4 with an appropriate delay, when it is determined that there is no bill P in the tray (step S2
6, NO), the driving of the reverse rotation motor 64 is stopped (step S27), the driving of all the motors is stopped, and the take-out operation ends (step S28).

As described above, the reverse rotation operation of the take-out roller 30 does not have to be performed for each banknote P, but is performed for every n banknotes to prevent uneven wear of the rollers and improve processing efficiency. Is possible.

As described above, in the first to fifth control methods, the take-out roller is rotated in the reverse direction in response to the bill take-out operation. When the take-out roller is not rotated in the reverse direction, when the separating and taking-out operation of the banknote P is repeatedly performed, the banknote P and the reverse rotation roller 3
A slight sliding friction is generated between the reverse rotation roller 31 and 1, and the rubber surface of the reverse rotation roller 31 eventually wears. Actually, when the states of FIGS. 5 and 6 are vibrated in small increments every time one banknote P is taken out, the reverse rotation roller 31 also vibrates to prevent uneven wear.

When only one sheet enters between the take-out roller 30 and the reverse rotation roller 31, the reverse rotation roller 31 becomes
Since it rotates together as shown in FIG. 4, uneven wear can be prevented.

However, since the bill separating and processing machine shown in FIG. 1 processes a large number of bills of several hundred thousand per day, in the process in which the reverse roller is worn, the wear is present in a portion on the circumference. Concentration causes uneven wear. Once uneven wear occurs, the reverse rotation roller 31 cannot rotate in a vibrational manner, and uneven wear is accelerated and progresses. As a result, separation becomes impossible, and stable extraction cannot be maintained during MRR extraction.

On the other hand, in the control method according to the above-described embodiment, since the reverse rotation roller is reversely rotated to forcibly shift the separation position, it is possible to prevent uneven wear of the reverse rotation roller 31. It becomes possible to perform a stable take-out operation for a long period of time. Therefore, it is possible to significantly reduce the replacement frequency of the reverse rotation roller.

As described above, according to the paper sheet take-out device of this embodiment, the separation roller is brought into pressure contact with the take-out roller, and a torque is applied to the separation roller in the direction opposite to the paper take-out direction. And separate the paper sheets. For this reason, stable extraction is possible without being affected by the thickness and friction coefficient of the paper sheets, and separation is possible if the friction coefficient between the separation roller and the paper sheets is higher than the friction coefficient between the paper sheets. Becomes Therefore, the material of the roller and the like can be selected only from the viewpoint of durability, and the range of selection can be expanded.

Further, the line segment connecting the center of the take-out roller and the center of the separation roller is different from the line segment connecting the contact part of the delivery roller with which the paper sheets come in contact and the contact part of the take-out roller and the separation roller. The rollers are arranged so as to be orthogonal to each other. Therefore, it is possible to make the feeding direction and the taking-out direction of the paper sheets coincide with each other. Therefore, the paper sheets sent out by the delivery roller are smoothly sent between the take-out roller and the separation roller, and the paper sheets separated by the separation roller and pulled back are also smoothly pulled back, so that the paper sheet can be taken out more stably. Will be possible.

Also, the line segment connecting the center of the take-out roller and the center of the separation roller is orthogonal to the line segment connecting the center of the separation roller and the center of rotation of the swing lever that swings the separation roller. Each roller is located at. For this reason,
The pressing force of the separating roller against the take-out roller can be kept constant, and a stable separating force can be obtained.

Further, the first detection sensor is arranged immediately after the take-out roller, and the second detection sensor is arranged immediately after the conveyance roller. The drive of the feed roller and the take-out roller is controlled based on the output signals from the first detection sensor and the second detection sensor. Therefore, without sacrificing the diameter and layout of each roller, it is possible to stably and reliably take out one by one regardless of the difference in length, thickness, and friction coefficient in the transport direction.

Further, based on the output signals from the first detection sensor and the second detection sensor, the drive of the feed roller and the take-out roller is controlled, and the take-out roller and the separation roller are reversely rotated for every predetermined number of one or more sheets. Let This allows
On the circumference of the separation roller, a specific portion does not concentrate and wear, and it becomes possible to prevent uneven wear of the roller. Therefore, the take-out operation can be performed stably for a long period of time, and the frequency of exchanging the separation roller can be significantly reduced.

[0151]

As described above, according to the present invention, it is possible to stably and reliably take out one sheet at a time for a long period of time without being influenced by the thickness, the friction coefficient, and the length of the paper sheet. It is possible to provide a paper sheet takeout device that can be used.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a configuration of a banknote sorting machine to which a paper sheet take-out device according to an embodiment of the present invention is applied.

FIG. 2 is a perspective view schematically showing the structure of a banknote take-out device as a paper sheet take-out device applied to the banknote separation processing machine shown in FIG.

FIG. 3 is a diagram showing a rotation state of a take-out roller and a reverse rotation roller that constitute a separating mechanism of the bill take-out device shown in FIG.

FIG. 4 is a diagram showing a state in which one bill is fed between a take-out roller and a reverse rotation roller.

FIG. 5 is a diagram showing a state where two banknotes are fed between a take-out roller and a reverse roller.

FIG. 6 is a diagram showing a state in which a bill sent between a take-out roller and a reverse roller is separated.

FIG. 7 is a front view showing an arrangement configuration of each roller that constitutes the separating mechanism of the bill takeout device shown in FIG.

FIG. 8 is a side view showing an arrangement configuration of each roller that constitutes the separation mechanism shown in FIG.

FIG. 9 is a front view showing a contact state between a take-out roller and a reverse rotation roller.

FIG. 10 is a side view showing a state where the take-out roller and the reverse rotation roller shown in FIG. 9 are in contact with each other.

FIG. 11 is a flowchart for explaining a first control method applied to the paper sheet takeout device according to the embodiment of the present invention.

FIG. 12 is a flowchart for explaining a second control method applied to the paper sheet takeout device according to the embodiment of the present invention.

FIG. 13 is a flowchart for explaining a third control method applied to the paper sheet takeout device according to the embodiment of the present invention.

FIG. 14 is a flowchart for explaining a fourth control method applied to the paper sheet takeout device according to the embodiment of the present invention.

FIG. 15 is a flowchart for explaining a fifth control method applied to the paper sheet takeout device according to the embodiment of the present invention.

[Explanation of symbols]

P ... Banknotes (paper sheets), 5 ... Pickup roller (delivery roller), 30 ... Takeout roller, 31 ... Reverse rotation roller (separation roller), 34 ... Drive roller (conveyance roller), 35 ...
Pinch rollers (conveying rollers), 63a, 63c ... Pulleys, 63b ... Belts, 64 ... Reverse motor (driving means), 76 ... First detection sensor (first detection means), 77 ...
Second detection sensor (second detection means), 85 ... Controller (control means).

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2C061 AS02 LL01                 3F343 FA04 FB00 FC23 GA04 GB01                       GC01 GD04 HB01 JD09 KB05                       KB18 LC22 MA14 MA33 MB04                       MB14

Claims (9)

[Claims] 1. A delivery roller for delivering a paper sheet, a delivery roller for delivering the paper sheet delivered by the delivery roller by rotating the paper sheet, and a pressure roller which is in pressure contact with the delivery roller and is opposite to the paper sheet delivery direction. Separation roller that separates the paper sheets one by one by applying the rotation torque of, a conveyance roller that conveys the paper sheets taken out by the take-out roller, and a paper sheet that is taken out by the conveyance roller. A sheet take-out device, which includes: a detection unit that detects the sheet; and a control unit that reversely rotates the take-out roller to stop it based on the detection unit detecting the rear end of the sheet. apparatus. 2. The paper sheet according to claim 1, wherein the control means stops the feed roller and the take-out roller based on the detection means detecting the leading end of the paper sheet. Class take-out device. 3. A delivery roller for delivering paper sheets, a take-out roller for taking out the paper sheets delivered by the delivery roller by rotating, and a pressing roller that is pressed against the take-out roller and is in a direction opposite to the paper sheet take-out direction. Separation roller that separates the paper sheets one by one by applying the rotation torque of the sheet, detection means that detects the paper sheets taken out by the take-out roller, and the detection means is the rear end portion of the paper sheets. And a control means for rotating the take-out roller in a reverse direction to stop the take-out roller, and a sheet take-out device. 4. A delivery roller for delivering the paper sheet, a delivery roller for delivering the paper sheet delivered by the delivery roller by rotating the paper sheet, a pressure roller contacting the delivery roller, and a direction opposite to the paper sheet delivery direction. A separation roller that separates the paper sheets one by one by applying the rotation torque of the conveyance roller, a conveyance roller that conveys the paper sheets taken out by the take-out roller, and a space between the take-out roller and the conveyance roller. First provided for detecting paper sheets taken out by the take-out roller
A detection unit, a second detection unit which is provided on the carry-out side of the carrying roller and detects the paper sheet carried out by the carrying roller; and a first detection unit which detects the rear end of the paper sheet. Based on the above, there is provided control means for rotating the take-out roller in a reverse direction to stop the take-out roller, and a paper-sheet take-out device. 5. The control means stops the feed roller based on the first detecting means detecting the leading edge of the paper sheet, and the second detecting means detects the leading edge of the paper sheet. The paper sheet take-out device according to claim 4, wherein the take-out roller is stopped based on the above. 6. The control means drives the delivery roller and the take-out roller after rotating the take-out roller in the reverse direction to stop the take-out roller. Paper sheet take-out device. 7. The control means stops and reversely rotates the take-out roller based on the detection of the rear end of the n-th sheet. 2. The paper sheet takeout device according to item 1. 8. The paper sheet take-out device according to claim 1, wherein the control means reversely rotates the take-out roller by a predetermined angle which is not divisible by 360 degrees. 9. A drive means for imparting a rotational torque to the separation roller is provided, pulleys of the same pitch diameter are attached to the shaft of the separation roller and the drive shaft of the drive means, and a belt is stretched between these pulleys for rotation. The paper sheet take-out device according to any one of claims 1 to 8, which transmits torque.