JPH089454B2 - Paper sheet separating and feeding device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a paper sheet separating / feeding device incorporated in an automatic depositing / dispensing machine, an optical reader, or the like, and more specifically, bills or originals stored in a storage portion. Alternatively, the present invention relates to a paper sheet separating / feeding device having a structure in which paper sheets such as paper sheets (hereinafter referred to as paper sheets) are separated and fed one by one in cooperation with a plurality of types of rollers that rotate in different feeding directions. .

[Conventional technology]

FIG. 7 is a perspective view showing a conventional paper sheet separating and feeding device of this type, and FIG. 8 is a side view thereof.

In the figure, reference numeral 1 designates a housing portion, which has a guide plate portion 2 at its tip portion and a stage 3 which is vertically movable at the bottom portion.

Reference numeral 4 denotes paper sheets stored in the storage unit 1 in a form accumulated on the stage 3.

Here, the stage 3 of the storage section 1 is moved up and down by a drive mechanism (not shown) including a spring and a solenoid, and the uppermost sheet 4 can be pressed against the pickup roller 5 when the stage 3 is raised. Has become.

A pickup roller 5 has a high-friction member 6 included in a radius r in a part of its outer circumference. The pickup roller 5 is fixed to a shaft 7 by, for example, two pieces at a predetermined interval so that the paper sheet 4 is formed. It is arranged above and is rotated in the direction of arrow a by a DC servo motor described later.

Reference numeral 8 denotes a feeding roller, which has a high friction member 9 on a part of the outer periphery included in the radius r like the pickup roller 5, and has a ring-shaped groove 10 extending over the entire circumferential direction.
, For example, are arranged in parallel.

For example, two feeding rollers 8 are fixed to a shaft 11 provided in parallel with the shaft 7 at a predetermined interval, and are placed on the guide plate portion 2 so as to be located in the storage portion 1.
Is arranged on the front end side of the pickup roller and is rotated in the same direction as the arrow a in association with the rotation of the pickup roller 5.

Incidentally, the pickup roller 5 and the feeding roller 8
The high-friction members 6 and 9 provided at the position have sufficient frictional force for feeding and feeding the sheet 4, and the pickup roller 5 and the feeding roller 8 are positioned at the positions of the high-friction members 6 and 9. When the sheet comes into contact with the sheet 4, the sheet 4 can be fed in the direction of arrow c.

A separation roller 12 has, for example, one ring-shaped groove 13 extending over the entire circumferential direction.

The separating roller 12 is attached to a shaft 15 rotatably held by a holding block 14 located below the guide plate portion 2 at the same interval as the feeding roller 8, and is attached to the guide plate portion 2. A part of the outer periphery of the through hole is projected to the upper surface side and the feeding roller 8 and the grooves 10 and 13 of each other.
Slightly meshed with each other.

A one-way clutch (not shown) is provided between the separating roller 12 and the shaft 15, and the separating roller 12 pushes the sheet 4 back to the storage section 1 side by the motor (not shown) as shown by an arrow b. The frictional force of the separating roller 12 against the paper sheet 4 is set to be smaller than the frictional force of the feeding roller 8 against the paper sheet 4.

16 is a pulley attached to one end of the shaft 7,
17 is a pulley attached to one end of the shaft 11, 18
Is a belt wound around the pulleys 16 and 17, and the shaft 11 and the feeding roller 8 are rotated via the pulleys 16 and 17 and the belt 18 in conjunction with the shaft 7 and the pickup roller 5.

19 is a DC servo motor, 20 is this DC servo motor 19
Worm gear attached to the rotating shaft of the pickup roller 21 is a shaft of the pickup roller 5 so as to be adjacent to the pulley 16.
A worm wheel attached to the worm wheel 11. The worm wheel 21 meshes with the worm gear 20.

The DC servo motor 19 has a built-in encoder, and when the DC servo motor 19 rotates in the direction of arrow e, its rotational force is worm gear 20 and worm wheel 21.
Is transmitted to the shaft 7 via the pulley 11, the belt 18, and the pulley 17, and the shaft 11
As a result, the pickup roller 5 and the feeding roller 8 are integrated with the shafts 7 and 11, respectively, in the same direction as indicated by the arrow a, that is, in the direction in which the paper sheet 4 is fed out from the storage unit 1 at a peripheral velocity V1. It is designed to rotate.

On the other hand, when the DC servomotor 19 rotates in the direction opposite to the arrow e direction, its rotational force is the same as that of the shaft 7,
11 so that the pickup roller 5 and the feeding roller 8 rotate integrally with the shafts 7 and 11 at the same speed in the direction opposite to the direction of the arrow a, that is, in the direction of returning the sheet 4 to the storage section 1 side. It has become.

Further, the reduction ratio between the worm gear 20 and the worm wheel 21 is set to 1/10 or less, and the rotational force from the worm wheel 21 is not transmitted to the worm gear 20.

Reference numeral 22 denotes a sensor as a detection means composed of a light emitting element and a light receiving element which are arranged in the vicinity of the feeding roller 8 and the separating roller 12 so as to face each other in the vertical direction, and the sheet 4 fed from the storage unit 1 by the sensor 22. It is designed to detect

Reference numerals 23a and 23b are high-speed feed rollers arranged on the downstream side of the feeding roller 8 and the separating roller 12 in the feeding direction of the paper sheet 4 indicated by the arrow c, which are vertically arranged so as to come into contact with each other. Both high speed feed rollers
Each of 23a and 23b has a sufficient frictional force to convey the paper sheet 4 over the entire circumference, and is rotated at a peripheral speed V2 in the directions of arrows d1 and d2 by a conveyance motor (not shown).

Here, the peripheral speed V2 of both high-speed feed rollers 23a, 23b
Is the processing of the processing system (for example, the recognition unit that recognizes the denomination of the banknotes when the paper sheets 4 are banknotes) by adjusting the interval between the paperboards 4 that are continuously paid out from the storage section 1. The peripheral speed is set to the interval l1 that does not hinder, that is, V2 = V1 · l1 / 2πr.

Further, normally, for the purpose of downsizing of the apparatus, the radius r of the feeding roller 8 including the high friction member 9 is made small so that the relationship between the peripheral speeds V1 and V2 is V2> V1.

FIG. 9 is a block diagram of a control system for controlling the above configuration,
As shown in this figure, the DC servo motor 19 and the sensor 22 are connected to a control unit 24 as a control means, so that the control unit 24 controls the rotation of the DC servo motor 19 and a not-shown conveyance motor. Has become.

Next, the operation of the above configuration will be described with reference to FIG. 10 together with FIGS. 7 to 8 and 9.

FIG. 10 is an operation time chart of the main constituent elements in FIG. 7, and S1 to S3 in the figure show processing steps.

<S1> First, when the feeding instruction and the number of fed sheets 4 are input by the input means (not shown), the control section 24 shown in FIG. 9 raises the stage 3 by a driving mechanism (not shown) in response to the input. The uppermost sheet 4 on the stage 3 is pressed against the pickup roller 5.

Subsequently, the DC servomotor 19 is rotated by an instruction from the control unit 24, and the rotational force thereof is the worm gear 20, the worm wheel 21, the pulley 16, the belt 18, and the pulley as described above.
It is transmitted to the shafts 7 and 11 via 17 respectively, whereby the pickup roller 5 and the feeding roller 8 rotate integrally with the shafts 7 and 11 in the arrow a direction.

At this time, the separating roller 12 also rotates in the direction of arrow b by a motor or the like not shown.

Therefore, the uppermost sheet 4 is the pickup roller 5
When is rotated, it is fed forward due to the frictional force with the high-friction member 6 provided on the outer periphery thereof, and its tip is sandwiched by the meshing portion between the feeding roller 8 and the separation roller 12, and the feeding roller is further fed. By the rotation of 8, the feeding force in the direction of arrow c is received by the frictional force with the high friction member 9 provided on the outer peripheral portion thereof.

At this time, at the same time, the paper 4 is separated by the separating roller 12 which is rotating in the direction of arrow b by a motor (not shown).
Although a force for pushing back to the side is applied, since the frictional force of the separating roller 12 with respect to the paper sheet 4 is smaller than the frictional force of the high friction member 9 with respect to the paper sheet 4, the paper sheet 4 is rotated by the rotation of the feeding roller 8. It is sent in the direction of arrow c along the guide plate portion 2.

By the way, the paper sheet 4 fed out by the rotation of the pickup roller 5 is not limited to the uppermost paper sheet, but the paper sheets 4 come into close contact with each other due to various factors, and the uppermost paper sheet 4 and the paper sheet 4 below it. There are cases where multiple sheets are fed out in an overlapping state.

In this case, since the separation roller 12 is slightly meshed with the feeding roller 8 and the separation roller 12 is always rotated in the direction of the arrow b, that is, in the direction of pushing the paper sheet 4 back to the storage unit 1, it is not the highest position. The sheet 4 is stopped by the separating roller 12, and only the uppermost sheet 4, that is, the sheet 4 that is in direct contact with the feeding roller 8 is fed in the direction of arrow c.

Therefore, the paper sheets 4 are separated and fed one by one from the storage unit 1, and the drawn paper sheets 4 are already rotated in the directions of arrows d1 and d2 by the transport motor (not shown). It is fed into the space 23b, and is further conveyed to the processing system of the next step by a conveyance path including rollers, a conveyance belt and the like (not shown).

The sheets 4 successively fed out from the storage section 1 in this way are detected by the sensor 22 and counted by the control section 24 as detected sheet number data.

<S2> When the trailing edge of the last sheet 4 designated by the above-mentioned separation and feeding passes through the meshing portion between the feeding roller 8 and the separating roller 12, and the passage is detected by the sensor 22, the Based on this, the controller 24 applies a current so that the DC servo motor 19 rotates in the direction opposite to the arrow e direction, and reverse braking is applied until the DC servo motor 19 stops. At this time, a terminal (not shown) of the DC servo motor 19 may be short-circuited to generate a counter electromotive force, thereby braking.

In addition, the sensor 22 is provided in advance with the feeding roller 8 and the separation roller 12
It is provided at a position corresponding to the length l2 in the feeding direction of the paper sheet 4 from the meshing part with and the front end of the paper sheet 4 is detected by the sensor 22 when the paper sheet 4 is fed in the direction of the arrow c, that is, the paper sheet. It is also possible to detect that the rear end of No. 4 has passed the meshing portion of the feeding roller 8 and the separation roller 12 and apply reverse braking.

When reverse rotation braking is applied to the DC servo motor 19 in this manner, the feeding roller 8, the pickup roller 5, the shaft
Since 11, the shaft 7 and the pulleys 16 and 17 have a moment of inertia, the inertial force in the direction of arrow e is generally transmitted to the worm gear 20 via the worm wheel 21, but in this example, as described above, Wheel 21 to Worm Gear 20
Since the reduction ratio of the two is set so that the rotational force is not transmitted to the worm gear 20 and the DC servo motor 19
Only an inertial force in the direction of the arrow d is generated by the inertial moment of the rotating shaft of, so that the feeding roller 8 and the pickup roller 5 stop in a short time.

Therefore, rather than using other transmission means, the pickup roller
5. It is possible to prevent the number of sheets 4 more than the designated number due to the overrun of the feeding roller 8 from being separated and fed to the conveying path.

<S3> As described above, the feeding roller 8 and the pickup roller 5
When the sheet is stopped, it is possible to prevent separation and feeding of the sheets 4 of a specified number or more to the transport path, but at this time, the sheet 4 immediately after the last sheet 4 of the specified number of sheets is fed by the feeding roller 8 and the separation roller. It is in a state that it is sandwiched in the meshing part with 12.

If this paper sheet 4 is left as it is, it will cause trouble during the next separation and feeding, or if it is left for a long time, wrinkles and curls will occur on the paper sheet 4 and it will not be processed by the processing system in the next step. In order to cause trouble, it is necessary to return the paper sheet 4 sandwiched in the meshing portion of the feeding roller 8 and the separating roller 12 to the storage unit 1, and therefore the control unit 24 stops the feeding roller 8 and the separating roller 12 and then Further, a current is supplied so that the DC servo motor 19 rotates in the direction opposite to the arrow e direction for a certain period of time.

As a result, the rotational force of the DC servomotor 19 is transmitted to the shaft 7 through the feeding roller 8 and the separation roller 12 via the worm gear 20 and the worm wheel 21, and further from the shaft 7 via the pulley 16, the belt 18, and the pulley 17. , The pickup roller 5 and the feeding roller 8 rotate integrally with the respective shafts 7 and 11 in the direction opposite to the direction of the arrow a, that is, in the direction of pushing the paper sheet 4 back to the storage portion 1, As a result, the paper sheet 4 sandwiched between the meshing portions of the feeding roller 8 and the separation roller 12 has a frictional force with the high friction member 9 provided on the outer peripheral portion of the feeding roller 8 and the outer peripheral portion of the pickup roller 5. It is returned to the storage unit 1 by the frictional force with the high friction member 6 provided in the.

When the paper sheet 4 is returned to the storage unit 1, the control unit 24 stops the rotation of the DC servo motor 19, which stops the rotation of the feeding roller 8 and the pickup roller 5, and further lowers the stage 3 to make a series. Processing ends.

[Problems to be Solved by the Invention]

However, in the above-described conventional separating and feeding device, when the paper sheet is fed from the feeding roller to the high-speed feed roller, the paper sheet is pulled by the high-speed feed roller rotating at a peripheral speed faster than the feeding roller, and Friction due to sliding is generated between the feeding roller and the high-friction member of the feeding roller is worn by this friction, and the friction is reduced. Therefore, there is a problem that double feed is likely to occur.

Further, the paper sheets fed out from the storage section are usually separated one by one by the separation roller, but the separation roller may not normally perform separation due to external vibration or the like, and the paper sheets may be chained. Although the number of chained sheets is two, when the sensor in the vicinity of the feeding roller detects it, the control unit counts it as one sheet.

However, when the chained paper sheets are sent from the delivery roller to the high-speed feed roller, the chained paper sheets are separated one by one due to the difference in peripheral speed between the delivery roller and the high-speed feed roller, and are directly conveyed to the next step of the next process by the transport path. Since the control unit counts as two sheets when it is conveyed to the processing system and is detected by this processing system, the count value of the sheet when it is fed from the storage unit does not match the count value of the processing system, and as a result, There is also a problem that it becomes impossible to manage the number of paper sheets.

The present invention has been made to solve the above-mentioned problems, and prevents the high friction member of the feeding roller from being worn to prevent the double feeding of paper sheets and the occurrence of feeding failure, and the number of paper sheets at the time of feeding. It is an object of the present invention to realize a paper sheet separating and feeding device capable of accurately counting paper sheets.

[Means for solving the problem]

In order to achieve the above-mentioned object, according to the present invention, a stage provided in a storage unit is lifted so that a sheet on the stage is brought into pressure contact with a pickup roller, and the pickup roller is rotated so that a part of the outer periphery of the stage is rotated. A high-friction member is provided to send the paper sheets to the meshing part of the delivery roller and the separation roller arranged at the front end of the storage section, and the rotation of the delivery roller causes the high-friction to be provided on part of the outer periphery of the paper. A paper sheet separating / feeding device that feeds paper sheets from the storage portion by a member and feeds them to the high-speed feed roller, and returns paper sheets other than the paper sheets that are in direct contact with the feeding roller to the storage portion side by the rotation of the separating roller. In the above, a low-speed feed roller that rotates at a peripheral speed equivalent to that of the delivery roller is arranged between the delivery roller and the high-speed feed roller, and Near the Idorora is provided with a detecting means for counting the number of paper sheets.

[Work]

According to the present invention having the above-described configuration, the paper sheet fed by the pickup roller, the feeding roller, and the separating roller is fed to the low speed feed roller, and is fed from the low speed feed roller to the high speed feed roller. After the sheet is detected and counted by the detecting means in the vicinity of, the sheet is further conveyed to the processing system of the next step through the conveying path.

Therefore, according to this, the paper sheet passing through the meshing portion of the feeding roller and the separating roller is fed by the low-speed feed roller rotating at the peripheral speed equal to the peripheral speed of the feeding roller, so that the high friction member of the feeding roller and the paper Since there is no slippage with the leaves and wear of the high friction member due to sliding friction is suppressed, there is no reduction in the friction force due to wear of the high friction member of the payout roller as in the conventional case, and feeding failure or double feeding is eliminated. Can be prevented in advance.

Further, even if the separation roller does not normally perform separation due to external vibration or the like and the paper sheets are fed out in a chain, when the chained paper sheets are fed from the low speed feed roller to the high speed feed roller, The number of sheets at the time of feeding is accurately counted because they are separated due to the difference in peripheral speed between the high speed feed roller and the low speed feed roller, and are subsequently detected and counted by the detection means provided in the vicinity of the high speed feed roller. Therefore, the discrepancy with the count value in the processing system of the next process is eliminated, so that it is possible to reliably manage the number of sheets.

〔Example〕

 Embodiments will be described below with reference to the drawings.

FIG. 1 is a side sectional view showing an embodiment of a paper sheet separating and feeding device according to the present invention, FIG. 2 is a side sectional view at the time of feeding the bill, and FIG. 3 is a perspective view at the same time of feeding the bill.

In the figure, 1 is a storage part, 2 is a guide plate part, 3 is a stage, 4 is a sheet, 5 is a pickup roller, 6 is a high friction member, 7 is a shaft, 8 is a feed roller, 9 is a high friction member, and 10 is Groove, 11 is shaft, 12 is separating roller, 13 is groove,
14 is a holding block, 15 shafts, 16 and 17 pulleys, 18 belts, 19 DC servomotors, 20 worm gears, 21
The worm wheel, 22 sensor, and 23a and 23b are high-speed feed rollers, and since they are the same constituent elements as the conventional ones, they are denoted by the same reference numerals and their description is omitted, but in this embodiment, the feeding roller 8 and the separating roller 12 are omitted. The distance between the high-speed feed rollers 23a and 23b is wider than before.

Reference numeral 25 is a slit plate mounted coaxially with the shaft 7, and has a slit 26 at a predetermined position.

Reference numeral 27 denotes a sensor for detecting the slit 26. As shown in FIG. 1, the sensor 27 is indicated by an arrow a from the contact portion of the pickup roller 5 with the high friction member 6 to the paper sheet 4.
To the upstream end of the high friction member 6 in the direction
The feeding roller 8 and the separating roller from the front end of the storage section 1.
The slit 26 is arranged to be detected when it becomes equal to the distance l3 to the combined portion with 12.

28a and 28b are low-speed feed rollers arranged between the feeding roller 8 and the separation roller 12 and the high-speed feed rollers 23a and 23b.
Like a and 23b, it has sufficient frictional force to convey the paper sheet 4.

Both the low speed feed rollers 28a and 28b are adapted to rotate at a peripheral speed V3 in the e1 and e2 directions by a not-shown conveying motor, where the peripheral speed V3 is relative to the peripheral speed V1 of the feeding roller 8. V3 is set to V1.

Reference numeral 29 is a sensor as a detection means for detecting the passage of the paper sheet 4 and counting the number of sheets, which is composed of a pair of light emitting elements and light receiving elements, and is the high-speed feed roller in the feeding direction of the paper sheet 4 indicated by the arrow c. Distance l5 from low-speed feed rollers 28a, 28b so that they are located near the downstream side of 23a, 23b.
It is provided at a position separated by only this distance l5
For the length l2 of, l5 ≧ l2.

FIG. 4 is a block diagram of a control system in the present embodiment. In the same manner as in the prior art (FIG. 9), the DC servo motor 19 and the sensor 22 are connected to the control unit 24, and the sensors 27 and 29 are They are connected to each other and are under the control of the control unit 24.

Next, the operation of the above configuration will be described with reference to FIGS. 1 to 4 and FIGS. 5 and 6.

FIG. 4 is a control time chart for explaining the operation of the present embodiment. S1 to S4 in the drawing show processing steps, and FIGS. 6 (I) to (III) show traveling of the paper sheet 4. It is explanatory drawing which shows a state.

<S1> Now, as shown in FIG. 1, the stage 3 of the storage unit 1 descends at the end of the previous feeding of the sheet 4 and the uppermost sheet 4 on the stage 3 is not pressed against the pickup roller 5. I shall.

Therefore, when an instruction to feed the sheet 4 and the number of sheets to be fed are input by an input means (not shown), the fourth instruction is received.
The control unit 24 shown in the figure rotates the DC servomotor 19 in the direction opposite to the arrow e, and the rotational force thereof passes through the worm gear 20, the worm wheel 21, the pulley 16, the belt 18, and the pulley 17 as described above. The pick-up roller 5 and the pay-out roller 8 are transmitted to the shafts 7 and 11, respectively, whereby the pickup roller 5 and the payout roller 8 rotate in the directions opposite to the arrow a, respectively.

At this time, the slit plate 25 provided coaxially with the shaft 7 also rotates integrally with the pickup roller 5, and when the slit 26 of the slit plate 25 is detected by the sensor 27, the control unit 24 causes the DC servomotor 19 to rotate. To stop.

As a result, the pickup roller 5 and the feeding roller 8
The rotation position of both rollers 5 and 8 at this time is stopped at a certain position where the pickup roller 5 comes into contact with the preset sheet 4 of the high friction member 6, that is, the above-mentioned first
The position of l3 = l4 shown in the figure, and the feeding roller 8 is stopped at a position before the high friction member 9 meshes with the separation roller 12.

<S2> When the high-friction member 6 of the pickup roller 5 stops above the sheet 4 in this way, the control unit 24 then raises the stage 3 by a drive mechanism (not shown), and the uppermost sheet 4 on the stage 3 is moved. Is pressed against the high friction member 6 of the pickup roller 5.

After that, the DC servo motor is instructed by the control section 24.
When 19 rotates in the direction of arrow e, the rotational force thereof is transmitted to the shafts 7, 11 via the worm gear 20, the worm wheel 21, the pulley 16, the belt 18, and the pulley 17, respectively, as described above, whereby the shaft 7, The pickup roller 5 and the feeding roller 8 rotate together with 11 in the direction of arrow a.

At this time, the separating roller 12 also rotates in the direction of arrow b by a motor or the like not shown.

As a result, the uppermost sheet 4 on the stage 3 is sent by the distance of l4 (= l3) at the first rotation of the pickup roller 5 due to the frictional force with the high friction member 6, and the leading end of the sheet 4 is moved to the second position. As shown in the figure, the feeding roller 8 and the separation roller
Move to the position just before the meshing part with 12.

Then, the second rotation of the pickup roller 5 causes the paper sheet 4 to be further fed and moved by the frictional force with the high-friction member 6, and accordingly, the leading end of the paper sheet 4 meshes with the feeding roller 8 and the separation roller 12. When the feeding roller 8 is sandwiched between the portions, the feeding roller 8 is fed out from the storage portion 1 by receiving the feeding force in the direction of arrow c by the frictional force with the high friction member 9 provided on the outer peripheral portion thereof.

At this time, at the same time, the paper 4 is separated by the separating roller 12 which is rotating in the direction of arrow b by a motor (not shown).
Although a force for pushing back to the side is applied, since the frictional force of the separating roller 12 with respect to the paper sheet 4 is smaller than the frictional force of the high friction member 9 with respect to the paper sheet 4, the paper sheet 4 is rotated by the rotation of the feeding roller 8. It is fed out in the direction of arrow c along the guide plate 2.

As described above, in this embodiment, the first sheet 4 is fed by the distance of l4 at the first rotation of the pickup roller 5, and the leading end portion thereof is, as shown in FIG.
After moving to the position immediately before the meshing part with 12, the second rotation of the pickup roller 5 causes the paper 4 to be caught in the meshing part between the feeding roller 8 and the separation roller 12 due to the frictional force with the high friction member 6. By the rotation of the feeding roller 8, it is fed.

Therefore, the first and second sheets 4 shown in FIG. 6 (I) do not approach each other. That is, since the first sheet 4 is fed in advance by a distance of l3 shown in FIG. 6 (I) and then fed out, a constant space is obtained between the sheet 4 and the second sheet 4 to be fed out next. To be

Then, as described above, the second sheet 4 is fed out by the frictional force with the first sheet 4 and the separating roller 8 and the separating roller.
In many cases, it moves to the position just before the meshing part with 12, and the same for the third and subsequent sheets 4, so that the second and subsequent sheets 4 are picked up by the pickup roller 5, the feeding roller. It is fed out at regular intervals by 8 and the separation roller 12.

When the second and subsequent sheets 4 are in close contact with the first and fourth sheets 4, the separation roller 12 causes the second and subsequent sheets 4 to be separated.
However, since this operation is performed in the same manner as in the past, the description thereof will be omitted here.

The paper sheet 4 delivered by the delivery roller 8 is subsequently sent to the low speed feed rollers 28a, 28b, and the peripheral speed V3 of the low speed feed rollers 28a, 28b and the peripheral speed V1 of the supply roller 8 are set equal to each other as described above. Therefore, the high friction member 9 of the feeding roller 8 and the low speed feed roller 28
There is no slippage between a and 28b, and therefore, the high friction member 9 is free from wear and reduction in frictional force caused by slippage, and feeding defects and heavy running are prevented in advance.

The sheet 4 is further sent to the high speed feed rollers 23a, 23b by the low speed feed rollers 28a, 28b.

Here, the paper sheet 4 is accelerated by the high-speed feed rollers 23a and 23b by the speed of "V2-V3", and as shown in FIG. 6 (II), it is an interval which does not hinder the processing in the processing system of the next step. "T = 2πr · V2 / V3" passes sensor 29,
The sheet 4 is detected by 29, the number of passing sheets is counted by the control unit 24, and is further conveyed to a processing system (not shown) by a conveying path (not shown).

When the low-speed feed rollers 28a, 28b feed the paper sheet 4 to the high-speed feed rollers 23a, 23b, sliding friction occurs between the low-speed feed rollers 28a, 28b and the paper sheet 4 due to the difference in peripheral speed between the two. , This allows the low speed feed rollers 28a, 28
Although b is worn, the low-speed feed rollers 28a and 28b merely serve to feed the sheet 4, so that wear does not pose a problem.

By the way, as described above, when the pickup roller 5 and the feeding roller 8 sequentially feed the paper sheet 4 from the storage unit 1, but the separation roller 12 does not normally perform separation due to external vibration or the like, and the paper sheet 4 is chained. There is.

However, as shown in FIG. 6 (III), the chained paper sheets 4 pass through the low speed feed rollers 28a, 28b and then pass through the high speed feed rollers 23a, 23b.
This high speed feed roller 23a, 23b and the low speed feed roller 2
The “(V2-V1) / V1 · l2” distance is separated due to the difference in peripheral speed between 8a and 28b, and is detected by the sensor 29 and counted by the control unit 24.
The number of sheets can be accurately counted.

<S3> When the leading edge of the penultimate sheet 4 of the designated number of sheets is detected by the sensor 29 as shown in FIG. It is monitored that the leaf 4 passes through the sensor 22, and when the trailing edge of the last sheet 4 passes through the meshing portion between the feeding roller 8 and the separation roller 12, and the passage is detected by the sensor 22, Based on this, the control unit 24 applies a current so that the DC servo motor 19 rotates in the direction opposite to the arrow e direction, and applies reverse braking until the DC servo motor 19 stops.

At this time, a terminal (not shown) of the DC servo motor 19 may be short-circuited as in the conventional case, thereby generating a counter electromotive force and braking. Of course, the sensor in advance
22 is provided at a position corresponding to the length l2 in the feeding direction of the paper sheet 4 from the meshing portion of the feeding roller 8 and the separating roller 12, and when the paper sheet 4 is fed in the direction of arrow c, the front end thereof is detected by the sensor. The reverse rotation braking may be applied by detecting at 22, that is, by detecting that the rear end of the paper sheet 4 has passed the meshing portion of the feeding roller 8 and the separation roller 12.

By applying reverse braking to the DC servomotor 19 in this manner, the delivery roller 8 and the pickup roller 5 are stopped in a short time as described in the conventional art, and a specified number or more of the sheets 4 are conveyed by the overrun. Can be prevented from separating and feeding.

<S4> After stopping the feeding roller 8 and the separating roller 12 as described above, the control unit 24 further supplies a current for a certain period of time so that the DC servo motor 19 rotates in the direction opposite to the arrow e direction.

As a result, the rotational force of the DC servomotor 19 is transmitted to the shaft 7 through the feeding roller 8 and the separation roller 12 via the worm gear 20 and the worm wheel 21, and further from the shaft 7 via the pulley 16, the belt 18, and the pulley 17. , The pickup roller 5 and the feeding roller 8 rotate integrally with the respective shafts 7 and 11 in the direction opposite to the direction of the arrow a, that is, in the direction of pushing the paper sheet 4 back to the storage portion 1, As a result, the paper sheet 4 sandwiched between the meshing portions of the feeding roller 8 and the separation roller 12 has a frictional force with the high friction member 9 provided on the outer peripheral portion of the feeding roller 8 and the outer peripheral portion of the pickup roller 5. It is returned to the storage unit 1 by the frictional force with the high friction member 6 provided in the.

When the paper sheet 4 is returned to the storage unit 1, the control unit 24 stops the rotation of the DC servo motor 19, whereby the feeding roller 8 and the pickup roller 5 are stopped from rotating, and further, according to an instruction from the control unit 24. The stage 3 descends and the series of processing operations ends.

Although one embodiment of the present invention has been described above, the present invention is not limited to this.

For example, in the above-described embodiment, the DC servomotor 19 is rotated in the direction opposite to the arrow e before the stage 3 is raised when the paper sheet 4 is being fed, and the slit of the slit plate 25 is changed.
26 is detected by the sensor 27 so that the predetermined position of the high-friction member 6 of the pickup roller 5 comes to the position where the high-friction member 6 should come into contact with the sheet 4, but the DC servomotor 19 is rotated in the direction of arrow e. , The slit 26 of the slit plate 25 as a sensor
It is also possible to control so that the predetermined position of the high-friction member 6 of the pickup roller 5 comes to a position where it should come into contact with the paper sheet 4 by detecting by 27.

Further, in the above-mentioned embodiment, the slit plate 25 and the sensor 27 are used as the detecting means for detecting the position of the high friction member 6. However, a switch is arranged around the shaft 7 and the switch is operated. It is also possible to control the position of the high-friction member 6 with respect to the paper sheet 4 by providing a protrusion or the like on the shaft 7 and using the switch and the protrusion or the like as detection means.

〔The invention's effect〕

As described above, according to the present invention, a low-speed feed roller that rotates at a peripheral speed equivalent to that of the delivery roller is arranged between the delivery roller and the high-speed feed roller, and the number of sheets is set near the high-speed feed roller. A detection means for counting is provided to feed the sheet fed by the pick-up roller, the feeding roller, and the separation roller to the low-speed feed roller, and from the low-speed feed roller to the high-speed feed roller. After detecting and counting the sheet by the detecting means in the vicinity of, the sheet is further conveyed to the processing system of the next step through the conveying path.

Therefore, according to this, the paper sheet that has passed through the meshing portion of the feeding roller and the separation roller is fed by the low-speed feed roller rotating at the peripheral speed equal to the peripheral speed of the feeding roller, so that the high friction member of the feeding roller is obtained. Since slippage does not occur between the paper sheet and wear of the high-friction member due to sliding friction is suppressed, reduction of frictional force due to wear of the high-friction member of the feeding roller as in the conventional case is eliminated.
It is possible to obtain an effect that it is possible to prevent the feeding failure and the heavy running.

Further, even if the separation roller does not normally perform separation due to external vibration or the like and the paper sheets are fed out in a chained manner, when the chained paper sheets are fed from the low speed feed roller to the high speed feed roller, the high speed feed roller Since the feed roller and the low-speed feed roller are separated from each other due to the difference in peripheral speed, and subsequently detected by a detecting means provided in the vicinity of the high-speed feed roller, the number of sheets at the time of feeding is accurately counted. Since there is no discrepancy with the count value in the processing system of the next process, it is possible to obtain an effect that the number of sheets can be reliably managed.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of a paper sheet separating and feeding device according to the present invention, FIG. 2 is a side sectional view at the time of feeding a bill, and FIG. 3 is a perspective view at the same time when feeding a bill. FIG. 5 is a block diagram of a control system of the embodiment, FIG. 5 is an operation time chart of the embodiment, FIG. 6 is an explanatory view showing a traveling state of a paper sheet in the embodiment, and FIG. 7 is a conventional paper sheet dispensing. FIG. 8 is a perspective view showing the apparatus, FIG. 8 is a side sectional view of the conventional example of FIG. 7, FIG. 9 is a block diagram of a control system of the conventional example, and FIG. 10 is an operation time chart thereof. 1: Storage part, 2: Guide plate part 3: Stage, 4: Sheet 5: Pickup roller 6: High friction member, 7: Shaft 8: Delivery roller, 9: High friction member 10: Groove, 11: Shaft 12: Separation roller, 13: Groove 15 Shaft, 16, 17: Pulley 18: Belt, 19: DC servo motor 20: Worm gear, 21: Worm wheel 22: Sensor 23a, 23b: High speed feed roller 23: Controller, 25: Slit plate 26: Slit, 27: Sensor 28a, 28b: Low speed feed roller 29: Sensor

Claims (1)

[Claims] 1. A high-friction member provided on a part of the outer periphery of a sheet provided on the stage is brought into pressure contact with a pickup roller when the stage provided in the storage section is raised, and the pickup roller is rotated. The paper sheet is sent to the meshing portion of the delivery roller and the separation roller arranged at the front end of the storage section, and further the rotation of the delivery roller causes the high-friction member provided on a part of the outer periphery of the paper sheet to convey the paper sheet. In a paper sheet separating and feeding device that feeds a high-speed feed roller from the storage portion and returns the paper sheets other than the paper sheets that are in direct contact with the delivery roller to the storage portion side by the rotation of the separation roller, A low-speed feed roller that rotates at a peripheral speed equivalent to that of the feeding roller is arranged between the feed roller and the paper sheet near the high-speed feed roller. And a means for knowledge, paper sheet separating and feeding apparatus characterized by counting the number of paper sheets fed out from the accommodating unit by the detection information of the detecting means.