JP2003081463A - Paper sheet taking out device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper sheet taking out device capable of stably taking out paper sheets without receiving influence of thickness and friction coefficient of paper sheets and of nicely taking out from short paper sheets to long paper sheets without sacrificing diameter or layout of a feeding roller, a taking out roller and a carrying roller. SOLUTION: An optical reflection reading apparatus 75 photoelectrically converting a surface of a bill P and a type judging part judging a type of a bill P taken out by the taking out roller 30 based on output signal of the optical reflection reading apparatus 75 are provided between a pick up roller 5 and the taking out roller 30. The type of the bill P is judged before taking in the bill P, based on the judgment result, a first detector 76 right after the taking out roller 30, and a second detector 77 right after the carrying roller 34, drive of the pick up roller 5 and the taking out roller 30 are controlled respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a paper sheet sorting and sorting machine for sorting and sorting paper sheets such as banknotes and the like. The present invention relates to a leaf extracting device.

[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 which takes out a paper sheet by a frictional force of a rubber roller is known. In such a paper sheet take-out device, the paper sheets can be reliably separated and taken out, and
It is required to be able to take out without skewing.
In addition, it enables stable removal that is not easily affected by the thickness of paper sheets and the coefficient of friction.
What is not affected by the difference in the type and size is desired. On the other hand, from the viewpoint of the processing capacity of the take-out device, it is desired to take out a large number of paper sheets within a unit time.

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

The gate roller type take-out device includes a take-out roller, and the gate roller is provided so as to face the take-out roller. The take-out roller and the gate roller have a comb-like nested shape, and a three-dimensional gap is formed between them.

Paper sheets are loaded into the supply unit in a stacked state,
It is delivered by being pressed against a pickup roller which is a delivery roller. The paper sheets sent out are
The sheet is passed through the gap between the take-out roller and the gate roller, and is sequentially separated and taken out from the stacked sheets by the frictional force of the gate roller. A rubber portion is partially provided on the peripheral surface of the take-out roller, and the sheets are taken out one by one by one rotation. The entire circumference of the pickup roller is made of rubber, and each pickup roller is intermittently driven by a required amount.

A drive roller is provided in the take-out direction of the take-out roller, and a pinch roller is in contact with the drive roller. The paper sheets taken out by the take-out roller are nipped and conveyed by the drive roller and the pinch roller. The drive roller and the pinch roller always rotate at a predetermined speed while the paper sheets are being taken out.

However, the gate roller type is easily affected by the thickness of the sheet because it has a structure in which the sheet is separated by the frictional force generated by the gap. That is, there is an optimum gap for the thickness of the paper sheets, but paper sheets thicker or thinner than this gap tend to cause separation failure. This is because the thick paper sheet and the thin paper sheet 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 decreases. Easy to pick up. On the other hand, if the gap is narrow, the passage resistance increases, so that the pickup roller cannot feed the sheet, and the sheet is skipped and a pickup failure occurs.

In order to solve such a problem, a pressure contact roller type has been developed. This pressure contact roller type is provided with an idle roller, and the pressure roller is pressed against the idle roller to separate them by the frictional force of the pressure roller. The pressure contact roller type has the advantage that the pressing force of the paper sheet between the idle roller and the pressure contact roller can be made constant, and thus is not easily affected by the thickness of the paper sheet. The drive roller, which is coaxial with the idle roller, forms a conveying path with the pinch roller and conveys the separated paper sheets.

[0009]

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 paper sheet feeding force. 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, a weak banknote such as a circulating banknote may be buckled due to the resistance of the pressure contact roller. Further, there is a problem that the tip of the bill is rolled or damaged.

In both the gate roller system and the pressure contact roller system, an appropriate friction coefficient is required for the gate roller and the pressure contact roller for giving the separating force to the paper sheets.
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 contact roller, it is necessary to select from a limited range from the viewpoint of the coefficient of friction. Further, if the friction coefficient changes due to wear or aging, there is a problem that the separation force is affected.

Further, in both the gate roller system and the pressure contact roller system, since the paper sheet conveying force in the separating portion is not sufficient or unstable, the distance from the pickup roller to the drive roller is set to the banknote. It is designed to be shorter than the length in the conveying direction. As a result, the pickup roller or the drive roller can always apply a conveying force to the paper sheet.

However, when the length of the paper sheet in the conveying direction is short, it is necessary to sacrifice the diameter of the pickup roller, the take-out roller, the drive roller, or the like, or to arrange them in a nested manner, which is a layout restriction. There is a problem such as receiving. Also, when the length in the transport direction is different depending on the type of bill, such as bills, taking out the shortest bill may cause instability in taking out the longest bill, which makes the system unbalanced. Will end up.

Therefore, according to the present invention, the paper sheets can be stably taken out without being affected by the thickness and friction coefficient of the paper sheets, and the diameter and layout of the feeding roller, the take-out roller and the conveying roller can be improved. It is an object of the present invention to provide a paper sheet take-out device that can take out short paper sheets to long paper sheets satisfactorily without sacrificing paper.

[0015]

The paper sheet take-out device of the present invention is a paper feed unit for feeding paper sheets, a feeding roller for feeding paper sheets from the feeding unit, and a feeding roller for feeding the paper sheets. A take-out roller that takes out by rotating the paper sheet, a conveying roller that conveys the paper sheet taken out by the take-out roller, and a type of paper sheet that is provided in the supply unit and is taken out by the take-out roller And a control means for stopping the operation of the delivery roller based on the type of the paper sheet determined by this determination means.

Further, the paper sheet take-out device of the present invention is such that the paper sheet is supplied to the supply section, the feed roller provided in the supply section for feeding the paper sheet, and the paper fed by the feed roller. The take-out roller that takes out by rotating the leaves, the conveying roller that conveys the paper sheets taken out by the take-out roller, and the type of the paper sheet that is provided in the supply unit and that is taken out by the take-out roller Determination means for determining, detection means provided in the vicinity of the transport roller for detecting paper sheets taken out by the take-out roller, and when the detecting means detects the leading end of the paper sheet, From the time point, there is provided control means for stopping the operation of the delivery roller after a predetermined time delay based on the type of paper sheet judged by the judgment means.

Further, the paper sheet take-out device of the present invention is configured to supply a paper sheet to the paper supply section, a delivery roller for delivering the paper sheet from the supply section, and a paper sheet delivered by the delivery roller. Between the take-out roller that takes out by rotating, the carrying roller that carries the paper sheets taken out by the take-out roller, and between the sending roller and the taking-out roller,
A determination unit that determines the type of paper sheet to be taken out by the take-out roller and a paper sheet that is provided between the take-out roller and the conveyance roller and detects the paper sheet taken out by the take-out roller. Detecting means, a second detecting means provided on the carry-out side of the conveying roller for detecting paper sheets conveyed by the conveying roller, and a first detecting means for the tip portion of the paper sheet. Is detected, the operation of the delivery roller is stopped after a predetermined time delay based on the type of paper sheet determined by the determination means, and the second detection means causes the leading edge of the sheet to be detected. And a control means for stopping the operation of the take-out roller based on the detection of

Further, the paper sheet take-out device of the present invention is configured to supply a paper sheet to a paper supply section, a delivery roller for delivering the paper sheet from the supply section, and a paper sheet delivered by the delivery roller. A take-out roller that is taken out by rotation, a conveying roller that conveys the paper sheets taken out by the take-out roller, and a delivery roller that is provided behind the delivery roller in the supply unit in the paper delivery direction, and is delivered by the delivery roller. And a control means for stopping the operation of the delivery roller when the detection means detects the rear end of the paper sheet.

Furthermore, the paper sheet take-out device of the present invention is configured to supply a paper sheet to the paper sheet supply section, a delivery roller for delivering the paper sheet from the supply section, and a paper sheet delivered by the delivery roller. A take-out roller that is taken out by rotating, a conveying roller that conveys the paper sheets taken out by the taking-out roller, and a paper sheet that is provided between the conveying roller and the take-out roller and is taken out by the take-out roller First detecting means for detecting a sheet, a second detecting means provided on the carry-out side of the conveying roller for detecting a sheet conveyed by the conveying roller, the sheet supplying section, and Third detecting means provided between the feeding roller and detecting the rear end portion of the paper sheet fed by the feeding roller, and the third detecting means detects the rear end portion of the paper sheet. When it is predetermined from that point The operation of the delivery roller after between delay was stopped, the second detecting means and a control means for stopping the operation of the take-out roller based on the fact that detects the front end portion of the paper sheet.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an internal configuration diagram schematically showing a bill sorting machine according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a housing, and a table portion 1A is provided at a central portion on one side of the housing 1, and a bill supply portion 2 is provided at the table portion 1A. The bill supply unit 2 stores a plurality of bills P as paper sheets in an upright position. The bill P is pressed against a pickup roller 5 as a feed roller by a backup plate 4 as a pushing means that is biased by a spring 3. Thereby, the banknote P is
By the rotation of the pickup roller 5, it is delivered downward. Below the pickup roller 5, there are provided a separating section 32 and a conveying section 37 (shown in FIG. 2) which constitute a paper sheet take-out device which will be described in detail later.

The banknote P carried out from the carrying section 37 is carried by a clamp type carrying means 7 composed of a belt 6a and a roller 6b. The conveyance means 7 is provided with an attitude correction device 8 that automatically corrects the shift and skew of the taken-out banknote P. A discriminating unit 9 as a discriminating unit is provided on the downstream side of the conveying unit 7 in the bill conveying direction. The discrimination unit 9 is a banknote P conveyed by the roller pair 10.
By reading various information from the aspect of the
It is for discriminating the sheets, the presence or absence of stains and damages, the amount of money, the top and bottom, and the front and back directions.

A first branching device 11 as a switching device is provided on the downstream side of the discriminating section 9 in the bill transport direction. The first branching device 11 guides, to the reject box 12, those that are not determined to be genuine bills P, such as two bills or bills with a large skew of a certain amount or more according to the determination of the determination unit 9, and the genuine bills P.
The second branching device 1 serving as a switching means
It leads to 3.

The second branching device 13 divides the conveyance direction of the banknote P into a first direction and a second direction. A left-right reversing path 14 is provided in the first direction, and the left-right reversing path 14 twists the banknote P by 180 degrees left and right.
have. In the second direction, the mere belt conveyor 16
Is provided and the banknote P is conveyed as it is. First
And the banknotes branched and conveyed in the second direction merge at the merge unit 17. The path lengths to the merging section 17 are made equal to each other so that the intervals after the banknotes are merged do not shift.

A third branching device 18 serving as a switching means is provided on the downstream side of the merging unit 17 in the banknote transporting direction, and the banknotes P are transported in the third and fourth directions by the third branching device 18. Branched to. 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 striking wheel 21 for pressing the rear end of the banknotes P guided to the reversing box 20 against the reversing roller 21a. The banknote P is sent out from the reversing box 20 so that the top and bottom thereof are inverted and conveyed.

A simple belt conveyor 22 is provided in the fourth direction, and the banknote P is conveyed while maintaining its posture. The banknotes branched and conveyed in the third and fourth directions are merged at the merger 23. The path lengths of the branch paths to the merging section 23 are made equal to each other so that the intervals after merging do not shift.

A horizontal transport path 24 is provided on the downstream side of the merging section 23 in the banknote transport direction. The horizontal transport path 24 has a number of branching devices 25a-2 which is one less than the number of parts to be sectioned.
5d is provided. These branching devices 25a to 25d
First to fourth type pocket portions 26a to 26 are disposed as a stacking unit in the lower part of the banknotes, and the banknotes P are stacked and stacked horizontally in these type pocket sections 26a to 26. ing.

In the lower part of the first branching device 25a, 10
A zero-sheet sealing device 27 is provided. The 100-sheet sealing device 27 includes a stacking unit 28 that stacks and sorts 100 banknotes P each, and a transport unit 28 that transports the banknotes P from the stacking unit 28.
a and a winding portion 29 for binding the banknotes P conveyed by the conveying portion 28a with a paper belt 29a.

FIG. 2 is a block diagram showing a bill take-out device as a paper take-out device. This bill take-out device is composed of the above-mentioned pickup rollers 5, 5, the separating section 32 and the conveying section 37.
5, the separating unit 32 and the conveying unit 37 are arranged along the vertical direction.

The separating section 32 includes take-out rollers 30 and 30, and reverse rollers 31 and 31 as separating rollers are pressed against the take-out rollers 30 and 30. The transport unit 37 is located below the take-out rollers 30 and 30,
Drive rollers 34, 34 as conveying rollers are provided,
The drive rollers 34, 34 are also in contact with pinch rollers 35, 35 serving as conveyance rollers. The bill P is pulled out and conveyed by the drive rollers 34, 34 and the pinch rollers 35, 35. The pick-up roller 5, the take-out roller 30, the reverse rotation roller 31, the drive roller 34, and the pinch roller 35 are arranged one by one on the left and right, and take out the banknote P along the lateral direction.

A peripheral surface of the take-out roller 30 of the separating portion 32 is formed of rubber, and a shaft 36 is provided via a one-way clutch 30a.
Is attached to. The take-out roller 30 can freely rotate in the take-out direction of the banknote P, and the banknote P can be rotated by the drive roller 34.
Also, it is devised to reduce the resistance when it is pulled out by the pinch roller 35. The shaft 36 is attached to the frame 39 via a bearing 38. 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.

In this embodiment, the one-way clutch 30a is provided on the take-out roller 30, but the take-out roller 30 is fixed to the shaft 36, the one-way clutch 30a is provided on the timing pulley 40a, and the shaft 36 and the pulley 40a are provided.
It may be possible to rotate between and.

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. At one end of the shaft 46,
Pulley 48a, timing belt 48b, pulley 48c
A pickup motor 49 is connected via. The shaft 43 is rotatably attached to the bracket 51, and the bracket 51 is attached to the bracket 53 via the shaft 52.

The bracket 53 is attached to the frames 39, 39 via a shaft 46 so that it can be rotated left and right. The question between the bracket 51 and the stay 55 is
A compression spring 56 is provided. 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 reversing roller 31 is entirely formed of rubber,
The one having a higher friction coefficient for the bill P than the friction coefficient between the bills P is used. The reverse rotation roller 31 is rotatably attached to an upper end portion of a swing lever 59 via a shaft 58, and a lower end portion of the swing lever 59 has a shaft 60 as a support portion.
It is rotatably supported by. The swing lever 59 is
It is urged by a spring 62 to press the reverse roller 31 against the take-out roller 30.

The shaft 58 of the reversing roller 31 has a pulley 63.
The reverse motor 64 is connected via a, the timing belt 63b, and the pulley 63c. Reverse motor 6
4 is configured to rotate the reverse rotation roller 31 in the direction opposite to the takeout direction of the bill P. As described below,
The reverse rotation roller 31 rotates along with the take-out roller 30 in the take-out direction, but the reverse-direction torque is always applied in the reverse direction to generate 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 timing pulleys 63c attached to the 4a have the same pitch diameter. Further, the reverse motor 64 is
It is fixed to the stay 67 so that the shaft center of the shaft 60 of the swing lever 59 is located 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. Pinch roller 35
Are rotatably supported by a 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. Due to this urging, the pinch roller 35 is pressed by the drive roller 34 to generate a conveying force.

Between the take-out roller 30 and the conveying rollers 34, 35, there is provided a first detecting means for detecting the bill P sent from the take-out roller 30 and the reverse roller 31.
Detector 76 is provided. Conveyor rollers 34, 35
A second detector 77 as a second detecting means for detecting the bill P sent out from the transport rollers 34 and 35 is provided near the unloading side of the. First and second detector 7
Reference numerals 6 and 77 denote, for example, light transmission type optical sensors, which are attached to the bracket 79, respectively.

Here, the optical axis of the first detector 76 passes through the conveying path between the contact portion between the take-out roller 30 and the reverse rotation roller 31 and the contact portion between the drive roller 34 and the pinch roller 35, and The optical axis of the second detector 77 is the drive roller 34.
It passes through the conveyance path immediately after the contact portion between the pinch roller 35 and the pinch roller 35.

Pickup rollers 5 and 5 and takeout roller 3
An optical reflection type reader 75, which constitutes a determining means for determining the type of the bill P, is provided between the card readers 0 and 30.
The optical reflection type reader 75 is in contact with the pickup rollers 5 and 5 and the take-out rollers 30 and 30, and a light source 75a such as a light emitting diode that irradiates the surface of the banknote P to be taken out from the light source 75a, and It is composed of a CCD sensor (light receiving element) 75b that receives and photoelectrically converts the reflected light from the surface of the bill P due to this light irradiation.

The output signal of the optical reflection type reader 75 is sent to the type judging section 75c which also constitutes the judging means.
The type determination unit 75c determines the type of the banknote P taken out by the take-out rollers 30, 30 based on the output signal of the optical reflection type reader 75, and determines the length in the conveying direction, that is,
In this example, the length information of the banknote P in the lateral direction is sent to the controller 85.

The type determination of the banknote P is originally performed by the determination unit 9 as described above, but the type determination by the type determination unit 75c is simple because it is used for controlling the removal of the banknote P. . Also, there are not as many short-side lengths as there are banknote types, and for example, in the case of Japanese banknotes, the number of short-side lengths currently issued is one. Further, the banknotes of a type having a short length in the short-side direction have the same length, and are grouped to some extent, so that the length information sent to the controller 85 can be simplified. This simplification also simplifies the type determination itself performed by the type determination unit 75c.

Pickup motor 41, pickup motor 4
9, the conveyance motor 71 has a driver 81, 8
2, 83 are connected. Drivers 81, 82, 8
3 are connected to the controller 85, respectively. Note that the take-out motor 41 and the pickup motor 49 require intermittent drive control, and therefore a pulse motor is used.

Drivers 89a and 89b are connected to the left and right reverse motors 64, respectively. The drivers 89a and 89b are connected to the controller 85, respectively. The reverse motor 64 is a direct current motor capable of controlling a current, and a required generated torque can be obtained by setting a current. First and second detector 7
A drive amplifier 90 is connected to each of 6, 7 and 77, and detects the passage of the bill P and sends the information to the controller 85.

3 to 6 are schematic views of the separating section 32 and show the principle of generation of the separating force.

First, in FIG. 3, when there is no banknote P between the take-out roller 30 and the reversing roller 31, the reversing roller 31 is rotated in the conveying direction by the 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 the reverse rotation torque T is applied by the reverse motor 64.
Is being applied. However, since the torque due to the tangential force, which is a frictional force with the take-out roller 30, is higher, the reverse motor 64 slips and the reverse roller 31 rotates in the conveying direction.

Next, FIG. 4 shows a case where one banknote P is interposed between the take-out roller 30 and the reverse rotation roller 31.
Since the reverse rotation torque T is set to be smaller than the torque applied to the reverse rotation roller 31 by the tangential force generated by the frictional force between the reverse rotation roller 31 and the reverse rotation roller 31, the reverse rotation roller 31 via the banknote P.
Are rotating in the transport direction.

Next, FIG. 5 shows a case where two banknotes P are interposed between the take-out roller 30 and the reverse rotation roller 31, and the frictional force generated between the banknotes P1 and P2 is small. , The reverse rotation roller 31 is starting to rotate in the reverse direction with respect to the transport direction.

Next, FIG. 6 shows a state in which the second banknote 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.
1 is conveyed. In this way, even if two bills P are to be taken out, the second bill P2 is pulled back and only the first bill P1 is taken out. In practice, the states of FIGS. 5 and 6 are oscillatingly repeated every time one banknote P is taken out, 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. From the tangential force and the pressing force, the apparent friction coefficient of the reverse rotation roller 31 is (reverse rotation torque / reverse rotation roller radius) / reverse rotation roller pressing.
Since the pressing force of the reverse rotation roller 31 is constant by the spring force, by controlling the reverse rotation torque to be constant, the apparent friction coefficient of the reverse rotation torque can be kept constant and a stable separation force can be provided.

By changing the reverse rotation torque, an apparent friction coefficient can be set. The take-out roller 30 and the reverse rotation roller 31 may have a friction coefficient higher than the friction coefficient between the bills P1 and P2. Extraction roller 30 and reverse rotation roller 31
If the friction coefficient of is high, the feeding force and separating 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 material selection is widened. Further, unlike the gate roller, it does not always slip with the banknote P, and in principle there is no slippage with the banknote P, 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.

FIGS. 7 and 8 show the layout of each roller of the take-out device.

The pickup roller 5 comes into contact with the banknote P pressed by the backup plate 4, and separates it from the banknote P.
The paper money P is fed to the paper feeding machine 2 and the paper money P is fed out in cooperation with the take-out roller 30. The reverse rotation torque of the reverse rotation roller 31 is set to the reverse rotation torque during the take-out operation, but the reverse rotation torque is set so as to follow the rotation of the take-out roller 30 when there is no bill P. In the MRR separation method, it is necessary to stably apply the pressing force 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,
A line segment connecting the contact portion where the bill P contacts the pickup roller 5 and the contact portion 33 between the take-out roller 30 and the reverse rotation roller 31 is K1 and the center of the rotation axis of the take-out roller 30 and the center of the rotation axis of the reverse rotation roller 31 When the line segment connecting between the line segment and the line segment is K2, and the straight line connecting the center of the rotation axis of the reverse rotation roller 31 and the center of the rotation axis of the swing lever 59 is K3, the line segment K1 and the line segment K2 are approximately 90 °. They intersect at an angle.

That is, the take-out roller 30 and the reverse rotation roller 3
The common tangential direction of 1 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 into the paper and for suppressing the resistance of the banknotes P returned by the reverse rotation roller 31 from the stacked banknotes P.

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
It acts as a force f ′ having the same magnitude as the frictional force f via the shaft 58.

The intersection angle between the line segment K2 and the line segment K3 is 90 °.
Since the vector of the force f ′ passes through the center of the rotary shaft 60, the swing lever 59 is not rotated.
Therefore, the pressing force N generated at the contact portion 33 between the take-out roller 30 and the reverse rotation roller 31 can be kept constant.
Further, it is also important that the reverse motor 64 is fixed to the stay 67 and is not rocked together with the reverse rotation roller 31.

Here, the take-out roller 30 and the reverse roller 31
The contact pressure with is determined by the spring force of the spring 62 and the mounting position of the spring 62, and is constant without being affected by the rotation of the reverse motor 64 and the frictional force on the roller surface.

In FIG. 7, L0 is the length of the banknote P in the lateral direction (length in the conveying direction), L1 is the distance between the center of the rotation axis of the pickup roller 5 and the center of the rotation axis of the take-out roller 30, and L2 is the take-out direction. The distance between the center of rotation of the roller 30 and the center of rotation of the drive roller 34, L3 is the first detector 76.
Between the installation point of and the center of rotation of the drive roller 34,
L4 indicates the distance between the center of the rotation axis of the drive roller 34 and the installation point of the second detector 77, and N indicates the pressing force at the contact portion 33 between the take-out roller 30 and the reverse rotation roller 31.

Next, with reference to the flow charts shown in FIG. 9 and FIG. 10, a bill taking-out operation in consideration of the bill P having a short length in the lateral direction (conveying direction) in the above-mentioned configuration will be described. That is, this operation is to control the bill P to be taken out stably even if the distance between the pickup roller 5 and the drive roller 34 is longer than the length of the bill P in the lateral direction.

When the taking out of the bill P is started, it is judged whether or not there is a bill P to be taken out in the bill feeding unit 2 (step S11). As a result of this determination, when the bill P is present, the reverse motor 31 is rotationally driven in the reverse direction by the reverse motor 64 (step S12). At this time, since the take-out roller 30 is stopped, the take-out roller 3
The reverse rotation roller 31 does not rotate due to the resistance force received from 0. Then, the take-out motor 41 and the pickup motor 49 are rotationally driven (step S13), and the take-out of the banknote P is started.

On the other hand, the optical reflection type reader 75 is in contact with the pickup roller 5 and the take-out roller 30, and irradiates the surface of the bill P to be taken out with light.
The reflected light is received, photoelectrically converted, and the output signal is sent to the type determination unit 75c. The type determination unit 75c determines whether or not the type of the bill P taken out by the take-out roller 30 is the first type based on the output signal of the optical reflection type reader 75,
If it is the first type, the length in the conveyance direction, that is, the length information of the banknote P in the lateral direction in this example, is used as the controller 85.
To (step S14).

The controller 85 sets the number of drive steps (that is, delay time) of the take-out motor 41 based on the lengthwise information of the bill P sent from the type determining unit 75c (step S15). That is, the controller 8
For example, as shown in FIG. 14, a table storing therein the number of drive steps of the take-out motor 41 corresponding to the type of the banknote P is stored in the bank 5, and the banknote determined by referring to this table. The number of drive steps of the take-out motor 41 corresponding to the type of P is set. In the above example, since the type of the banknote P is the first type, the number of drive steps of the take-out motor 41 is set to DS1.

Next, the controller 85 detects the
The leading end of the first bill P has passed the take-out roller 30 and
It is determined whether or not the detector 76 has detected (step S
16) When the first detector 76 detects the tip, only the operation of the pickup motor 49 (pickup roller 5) is stopped (step S18). 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 becomes larger, so the first banknote P continues to be carried.

In step S14, if the type of the banknote P is not the first type, the type determining unit 75c next determines whether the type of the banknote P is the second type, and if it is the second type, The length information in the lateral direction is sent to the controller 85 (step S19).

Similar to step S15, the controller 85 sets the number of driving steps of the take-out motor 41 based on the lengthwise information of the banknote P sent from the type determining section 75c (step S20). In the above example, the type of bill P is the second type, so the number of drive steps of the take-out motor 41 is set to DS2.

The controller 85 then proceeds to step S1.
The process proceeds to 6, S17 and S18, and the same operation as above is performed.

If the type of the bill P is not the second type in step S19, the type determining unit 75c next determines whether or not the type of the bill P is the third type. The length information in the lateral direction is sent to the controller 85 (step S21).

Similar to step S15, the controller 85 sets the number of drive steps of the take-out motor 41 based on the lengthwise information of the banknote P sent from the type determining section 75c (step S22). In the above example, since the type of the banknote P is the third type, the number of drive steps of the take-out motor 41 is set to DS3.

The controller 85 then proceeds to step S1.
The process proceeds to 6, S17 and S18, and the same operation as above is performed.

In step S21, if the type of the banknote P is not the third type, the type determining unit 75c next determines whether the type of the banknote P is the fourth type, and if it is the fourth type, The length information in the lateral direction is sent to the controller 85 (step S23).

Similar to step S15, the controller 85 sets the number of drive steps of the take-out motor 41 based on the lengthwise information of the banknote P sent from the type determining section 75c (step S24). In the above example, since the type of the banknote P is the fourth type, the number of drive steps of the take-out motor 41 is set to DS4.

The controller 85 then proceeds to step S1.
The process proceeds to 6, S17 and S18, and the same operation as above is performed.

Here, the number of drive steps (delay time) DS1 to DS4 of the take-out motor 41 is set to a value (time) corresponding to Lx (see FIG. 7) obtained by the following equation (1) or (2). To be done.

Lx = L0- (L1 + L2-L3) (1) Lx = L0- (L1 + L2 + L4) (2) In step S23, if the type of the banknote P is not the fourth type, the controller 85 Was taken out 1
The leading end of the first bill P has passed the take-out roller 30 and
It is determined whether or not the detector 76 has detected (step S
25), when the first detector 76 detects the tip portion, only the operation of the pickup motor 49 (pickup roller 5) is stopped (step S18).

When the first bill P is conveyed and its tip is detected by the second detector 77 (step S2)
6), the operation of the take-out motor 41 (take-out roller 30) is stopped (step S27). At this time, the banknote P is conveyed only by the conveying force of the drive roller 34.

Next, the rear end of the bill P is the first detector 76.
It is determined whether or not it has been detected in step S28 (step S28).
As a result of this determination, when the rear end of the bill P is detected, it is determined whether or not the bill P is still in the bill supply unit 2 (step S29). As a result of this determination, when it is determined that the banknote P is present, the process returns to step S13 and the second banknote P is taken out. When it is determined that there is no bill P,
The reverse roller 31 (reverse motor 64) is stopped (step S30). Then, all the motors are stopped and the take-out operation is completed.

By such operation control, the distance between the pickup roller 5 and the drive roller (conveyance roller) 34 can be set large for the banknote P having the shortest length in the lateral direction. Further, by detecting the rear end of the banknote P with the first detector 76, the second sheet can be taken out at an earlier stage. This means that in the "constant gap extraction", the gap can be made smaller to increase the processing speed. In addition, the pitch can be reduced even in the "constant pitch extraction". Besides the viewpoint of reducing the gap and the pitch, it is also possible to make the rising of the motor gentle.

In this embodiment, the rear end of the bill P is detected by the first detector 76. However, when there is no demand for increasing the processing speed, the second detector 77 is used. Banknote P
Alternatively, the rear end of the banknote P may be detected to start taking out the next banknote P.

The leading end of the bill P has the first detector 76.
Although the pickup roller 5 is stopped with a delay time after being detected by, the length of the banknote P in the lateral direction is longer than the distance between the pickup roller 5 and the drive roller 34. Instead of the first detector 76, the pickup roller 5 can be stopped with a delay time after the second detector 77 detects the leading end of the bill P.

The operation control described with reference to the flowcharts of FIGS. 9 and 10 is difficult to realize by the conventional take-out method such as the gate roller system, and is easy to carry out in the MRR take-out method. MR
This is because the pressing of the banknote P against the pickup roller 5 can be reduced in the R take-out 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 pressing force is about 5N.

On the other hand, in the MRR take-out, since the take-out roller 30 and the reverse rotation roller 31 rotate in the separating portion, the biting force for the banknote P and the stable conveyance force because the reverse rotation torque is constant. As a result, the bill P
The leading force of the banknote P on the pickup roller 5 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 between the friction coefficients of the two, so the force for feeding the banknote P to the separating portion cannot be expected. In the MRR take-out, the torque is set so that a tangential force smaller than the frictional force between the take-out roller 30 and the banknote P and larger than the frictional force between the banknotes P and the banknote P is generated. The force to feed the first sheet, which is two sheets overlaid, is stable. For this reason, in MRR extraction, as shown in FIGS.
From the viewpoint of the roller layout, the start-up of the motor, and the processing capacity, the control method can provide stable takeout regardless of the size of the banknote P.

In the above embodiment, the take-out roller 3
The type of the banknote P to be taken out by 0 is determined by using the optical reflection type reader 75 and the type determination unit 75c, and the operation of the pickup roller 5 is stopped after delay correction for a predetermined time based on the determination result. Although the case has been described, the present invention is not limited to this,
Even if the rear end of the bill P sent out by the pickup roller 5 is detected and the operation of the pickup roller 5 is stopped after a predetermined time delay from the detection time point, the same effect can be expected. Hereinafter, a specific example thereof will be described.

As shown in FIG. 12, in front of the pickup roller 5 (between the bill supply unit 2 and the pickup roller 5), a third end for optically detecting the rear end portion of the bill P sent out by the pickup roller 5 is provided. A third detector 121 is provided as a detection means of the. Third detector 1
Reference numeral 21 includes a light source that irradiates the bill P sent by the pickup roller 5 with light, and a light receiving element that receives the reflected light and photoelectrically converts the reflected light.

FIG. 13 shows the third detector 1 shown in FIG.
It is a flowchart explaining the banknote taking-out operation which considered the banknote P in which the length of the transverse direction is short when 21 is used, The process of step S14-S25 in FIG. 9, FIG. 10 is replaced by the process of step S41-S44. The other points are the same as those in FIGS. 9 and 10. Therefore,
Only the differences will be explained.

After the processing of step S13, it is determined whether or not the rear end of the first bill P sent out by the pickup roller 5 is detected by the third detector 121 (step S41), and the third detection is performed. When the container 121 detects the rear end, after delay correction for a predetermined time (step S42),
Only the operation of the pickup motor 49 (pickup roller 5) is stopped (step S43). That is, when the third detector 121 detects the rear end portion of the bill P, from that time point, the distance ΔL (see FIG. 12) between the installation point of the third detector 121 and the center of the rotation axis of the pickup roller 5 is reached. After delaying the corresponding time, only the operation of the pickup motor 49 is stopped.

Next, after delaying the time corresponding to the distance L1 (see FIG. 12) between the center of the rotary shaft of the pickup roller 5 and the center of the rotary shaft of the take-out roller 30, the process proceeds to step S26, and thereafter, FIG. The same operation as 10 is performed.

As described above, according to the above-described embodiment, the reverse roller 31 is pressed against the take-out roller 30, and torque is applied to the reverse roller 31 in the direction opposite to the take-out direction of the banknote P, so that the banknote P is transferred. Because of the separation, if the friction coefficient between the reverse rotation roller 31 and the banknote P is higher than the friction coefficient between the banknotes, the banknotes can be separated, and the material of the roller can be selected only from the viewpoint of durability, and the range of selection is widened. . Further, since the reverse rotation roller 31 is rotated along with the take-out roller 30, friction with the banknote P is small, and especially when the banknote P is one sheet, only slight slippage occurs, so that abrasion is unlikely to occur. Further, in the gate roller method and the pressure contact method, if two banknotes pass through the separating unit, they cannot be separated, but in this method, the second banknote P is pulled back by the reverse rotation of the reverse roller 31. And reliable separation is possible. Also,
Since the output of the separating unit is stable, the pressing force of the banknote P against the pickup roller 5 can be weakened and the banknote P can be prevented from being soiled.

Further, by making the pressing direction of the reversing roller 31 and the rotating direction of the reversing roller 31 orthogonal to the conveying direction of the bill P fed by the take-out roller 30 and the pickup roller 5, the bill P sent out is taken out. The banknote P that is smoothly fed between the reverse rotation roller 31 and the reverse rotation roller 31 and that is separated and pulled back by the reverse rotation roller 31 is also smoothly pulled back, and stable removal is possible.

Further, since the paper money P can be stably conveyed at the separating portion, the pickup roller 5 and the conveyance roller 34 are provided.
The distance between and can be made longer than the length of the bill P in the conveyance direction. Further, the first detector 76 is provided immediately after the take-out roller 30, and the second detector 7 immediately after the transport roller 34 is provided.
By controlling the pick-up roller 5 and the take-out roller 30 with 7, it is possible to realize stable take-out even if the distance between the pick-up roller 5 and the transport roller 34 is made larger than the size of the bill P.

Further, the optical reflection type reader 75 and the type determining section 75c determine the type of the bill P before taking it in, and the first detector 76 immediately after the take-out roller 30 and the second detector just after the conveying roller 34. Since the drive of the pickup roller 5 and the take-out roller 30 is controlled by the detector 77, the pickup roller 5 can be stopped in accordance with the rear end of the banknote P from which the pick-up roller 5 is taken out. As a result, the time during which the pickup roller 5 is stopped in the latter half of the take-out operation and pulled into the conveying path against the stop is not increased as the length of the banknote P in the short-side direction increases. Therefore, taking out of a bill having a long length in the widthwise direction (length in the conveyance direction) is further stabilized. As described above, the balance and stability of the bill can be taken out as a system that can cope with bills of short to long length without sacrificing the diameter and layout of the rollers. Further, the processing performance can be improved by advancing the stop timing of the pickup roller 5.

[0095]

As described in detail above, according to the present invention, the paper sheet can be stably taken out without being affected by the thickness and friction coefficient of the paper sheet, and the delivery roller and the take-out roller can be taken out. It is possible to provide a paper sheet takeout device that can take out short paper sheets to long paper sheets satisfactorily without sacrificing the diameter and layout of the rollers and the transport rollers.

[Brief description of drawings]

FIG. 1 is an internal configuration diagram schematically showing a banknote sorting processor according to an embodiment of the present invention.

FIG. 2 is a perspective view showing in detail the configuration of a bill ejecting device.

FIG. 3 is a diagram showing a rotation state of a take-out roller and a reverse rotation roller that constitute a separation mechanism.

FIG. 4 is a view showing a state where one banknote is fed between a take-out roller and a reverse rotation roller.

FIG. 5 is a view showing a state in which two banknotes are fed between a take-out roller and a reverse rotation roller.

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

FIG. 7 is a side view showing an arrangement configuration of each roller and a detector that configure a bill separating mechanism.

FIG. 8 is a front view showing an arrangement configuration of each roller that constitutes a bill separating mechanism.

FIG. 9 is a flowchart illustrating a bill taking-out operation in consideration of bills having a short length in the transport direction.

FIG. 10 is a flowchart for explaining a bill taking-out operation in consideration of bills having a short length in the transport direction.

FIG. 11 is a diagram showing an example of a table in which the number of drive steps of the take-out motor is stored in correspondence with the type of bill.

FIG. 12 is a side view showing an arrangement configuration of each roller and a detector constituting a bill separating mechanism according to another embodiment of the present invention.

FIG. 13 is a flowchart illustrating a bill takeout operation in consideration of a bill having a short conveyance direction length according to another embodiment of the present invention.

[Explanation of symbols]

P ... Banknotes (paper sheets), 2 ... Banknote supply section (paper sheets supply section), 5 ... Pickup roller (delivery roller), 30 ...
Extraction roller, 31 ... Reverse rotation roller (separation roller), 34 ...
Drive roller (conveyance roller), 35 ... pinch roller (conveyance roller), 59 ... rocking lever, 60 ... support portion, 6
3a, 63c ... Pulley, 63b ... Belt, 64 ... Reverse motor (driving means), 75 ... Optical reflection type reader (determination means), 75c ... Kind determination section (determination means), 76 ... First detector ( 1st detection means), 77 ... 2nd detector (2nd detection means), 85 ... Controller (control means), 121 ... 3rd detector (3rd detection means).

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshihiko Narioka             70 Yanagicho, Saiwai-ku, Kawasaki City, Kanagawa Prefecture             Toshiba Yanagimachi Office (72) Inventor Yukio Asari             70 Yanagicho, Saiwai-ku, Kawasaki City, Kanagawa Prefecture             Toshiba Yanagimachi Office F-term (reference) 3E040 AA01 BA15 FD02 FD05 FD08                 3F048 AA06 AB03 BA05 BA06 BB02                       CC02 CC03 CC04 DA04 DA06                       DB07 DC13 DC14 EB15                 3F343 FA02 FB07 FC29 GA04 GB01                       GC01 GD01 JA01 JA19 JD04                       JD09 JD33 KB04 KB05 KB14                       MA03 MA14 MB04 MB13 MB14                       MC22 MC27

Claims (11)

[Claims] 1. A supply unit for supplying paper sheets, a delivery roller for delivering the paper sheets of the supply unit, a take-out roller for taking out the paper sheets delivered by the delivery roller, and A conveyance roller that conveys the paper sheets taken out by the take-out roller, a determination unit that is provided in the supply unit, and that determines the type of the paper sheet that is to be taken out by the take-out roller, and this determination means. A paper sheet take-out device comprising: a control unit that stops the operation of the delivery roller based on the type of paper sheet. 2. A detection unit, which is provided between the take-out roller and the conveyance roller, detects a sheet taken out by the take-out roller, and the control unit includes:
2. The operation of the delivery roller is stopped based on the detection unit detecting the leading end of the sheet when the type of the sheet cannot be determined by the determination unit. Paper sheet take-out device. 3. A supply unit for supplying paper sheets, a delivery roller provided in the supply unit for delivering the paper sheets, and a take-out roller for taking out the paper sheets delivered by the delivery roller by rotating the paper sheets. A transport roller for transporting the paper sheets taken out by the take-out roller; a determination means provided in the supply unit for determining the type of paper sheet to be taken out by the take-out roller; A detection unit that is provided in the vicinity and detects the paper sheet taken out by the take-out roller, and when the detection unit detects the leading end of the paper sheet, the determination unit determines from that point in time. And a control unit for stopping the operation of the delivery roller after a predetermined time delay based on the type of the paper sheet. 4. The control means stops the operation of the delivery roller based on the detection means detecting the leading end of the paper sheet when the determination means cannot determine the type of paper sheet. 4. The paper sheet takeout device according to claim 3, wherein 5. A supply unit for supplying paper sheets, a delivery roller for delivering the paper sheets of the supply unit, a take-out roller for taking out the paper sheets delivered by the delivery roller by rotation, A transport roller for transporting the paper sheets taken out by the take-out roller; a determination means for determining the kind of the paper sheet to be taken out by the take-out roller between the delivery roller and the take-out roller; A first detection unit that is provided between the roller and the conveyance roller and that detects paper sheets taken out by the take-out roller; and a first detection unit that is provided on the take-out side of the conveyance roller and is conveyed by the conveyance roller. When the first detecting means detects the leading edge of the paper sheet, the second detecting means for detecting the coming paper sheet, and from that point of time, the Control means for stopping the operation of the delivery roller after a predetermined time delay based on the type, and for stopping the operation of the take-out roller based on the second detection means detecting the leading end of the paper sheet. A paper sheet takeout device characterized in that 6. The control means, when the determination means cannot determine the type of paper sheet, the first detection means detects the leading end of the paper sheet, 6. The operation is stopped.
The paper sheet takeout device described. 7. The predetermined time delayed by the control means includes a length L0 of the paper sheet in the conveying direction, a distance L1 between the center of the rotation axis of the feed roller and the center of the rotation axis of the take-out roller, and the take-out time. If the distance between the center of the rotation axis of the roller and the center of the rotation axis of the carrying roller is L2, and the distance between the installation point of the first detecting means and the center of the rotation axis of the carrying roller is L3, then Lx is calculated by the following formula. 7. The paper sheet take-out device according to claim 5 or 6, wherein the time corresponding to is set. Lx = L0- (L1 + L2-L3) 8. The predetermined time delayed by the control means includes a length L0 of the paper sheet in the conveying direction, a distance L1 between the center of the rotation axis of the feed roller and the center of the rotation axis of the take-out roller, and the take-out time. When the distance between the center of the rotation axis of the roller and the center of the rotation axis of the carrying roller is L2, and the distance between the center of the rotation axis of the carrying roller and the installation point of the second detecting means is L4, Lx is calculated by the following formula. 7. The paper sheet take-out device according to claim 5 or 6, wherein the time corresponding to is set. Lx = L0- (L1 + L2 + L4) 9. A supply unit for supplying paper sheets, a delivery roller for delivering the paper sheets of the supply unit, a take-out roller for taking out the paper sheets delivered by the delivery roller, and A conveyance roller that conveys the paper sheet taken out by the take-out roller, and a rear end portion of the paper sheet that is sent out by the delivery roller, provided behind the delivery roller in the supply section in the paper sheet delivery direction And a control unit that stops the operation of the delivery roller when the detection unit detects the trailing end portion of the paper sheet. 10. A supply unit for supplying paper sheets, a delivery roller for delivering the paper sheets of the supply unit, a take-out roller for taking out the paper sheets delivered by the delivery roller, and A transport roller for transporting the paper sheet taken out by the take-out roller, and a first detection means provided between the carry roller and the take-out roller for detecting the paper sheet taken out by the take-out roller. A second detection unit that is provided on the unloading side of the conveyance roller and that detects the paper sheet conveyed by the conveyance roller; and is provided between the paper sheet supply unit and the delivery roller,
Third detecting means for detecting the rear end of the paper sheet sent out by the delivery roller, and when the third detecting means detects the rear end of the paper sheet, after a predetermined time delay from that time point. Control means for stopping the operation of the delivery roller and stopping the operation of the take-out roller when the second detection means detects the leading edge of the paper sheet. Leaf extraction device. 11. The predetermined time delayed by the control means is set to a time corresponding to the distance between the installation point of the third detection means and the center of the rotation axis of the delivery roller. 10. The paper sheet takeout device according to item 10.