JPH0331147A - Paper sheet separating/delivering device - Google Patents

Abstract

PURPOSE:To suppress the abrasion of the high-friction member of a delivering roller and prevent the occurrence of duplex feeding and defective delivery of paper sheets by arranging low-speed feed rollers rotated at the same speed as a delivering roller between the delivering roller and high speed feed rollers. CONSTITUTION:Paper sheets 4 delivered by a pickup roller 5, a delivering roller 8 and a separating roller 12 are fed to low-speed feed rollers 28a and 28b then fed to high-speed feed rollers 23a and 23b from low-speed feed rollers 28a and 28b, and paper sheets are detected and counted by a detecting means 29 near high-speed feed rollers 23a and 23b and further fed to the processing system of the next process by a conveying path. Paper sheets passing an engaging section of the delivering roller 8 and the separating roller 12 are fed by low- speed feed rollers 28a and 28b rotated at the same peripheral speed as the peripheral speed of the delivering roller 8, thus no slip occurs between the high-friction member of the delivering roller 8 and paper sheets, and the abrasion of the high-friction member due to slip friction is suppressed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a paper sheet separation and feeding device incorporated in an automatic deposit/withdrawal machine or an optical reader. Alternatively, it relates to a paper sheet separation and feeding device that separates and feeds paper sheets such as paper sheets (hereinafter referred to as paper sheets) one by one through the cooperation of multiple types of rollers that rotate in different feeding directions. .

[Conventional technology]

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

In the figure, reference numeral 1 denotes a storage section, which has a guide plate section 2 at its tip and a stage 3 that can move up and down at its bottom.

Reference numeral 4 indicates paper sheets stored in the storage section 1 in the form of accumulation at stage 3.

Here, the stage 3 of the storage section 1 is moved up and down by a drive mechanism (not shown) consisting of a spring, a solenoid, etc., and as the stage 3 rises, the uppermost sheet 4 can be pressed against the pickup roller 5. It has become.

Reference numeral 5 denotes a pickup roller, which has a high friction member 6 included within a radius r on a part of its outer periphery, and this pickup roller 5 is fixed to the shaft 7 at a predetermined interval, for example, in two pieces, so that the paper sheet 4 It is arranged above and rotated in the direction of arrow a by a DC servo motor, which will be described later.

Numeral 8 is a feed row arm, which, like the pickup roller 5, has a high-friction member 9 on a part of its outer periphery within the radius r, and also has a ring-shaped groove 10 extending over the entire circumferential direction.
For example, two are installed in parallel.

For example, two feeding rollers 8 are fixed at a predetermined interval to a shaft 11 provided in parallel with the shaft 7, and the feeding rollers 8 are arranged so as to be positioned on the guide plate portion 2.
The pickup roller 5 is arranged at the tip side of the pick-up roller 5, and similarly rotates in the direction of the arrow a in conjunction with the rotation of the pickup roller 5.

The high friction members 6 and 9 provided on the pickup roller 5 and the feeding roller 8 have sufficient frictional force to feed and feed the paper sheets 4. When the position of this high friction member 6.9 comes into contact with the paper sheet 4, the paper sheet 4 can be fed in the direction of arrow C.

Reference numeral 12 denotes a separation roller, which serves, for example, as one ring-shaped groove 13 extending over the entire circumferential direction.

This separation roller 12 is connected to a shaft 1 rotatably held by a holding block 14 located below the guide plate section 2.
5 is attached to the feed roller 8 at the same interval as the feed roller 8, and a part of the outer periphery protrudes from the through hole provided in the guide plate portion 2 to the upper surface side, so that the feed roller 8 and the groove 1 of each other are attached to the feed roller 8.
They are slightly engaged by 0.13.

A one-way clutch (not shown) is provided between the separation roller 12 and the shaft 15, and the separation roller 12 is driven by a motor (not shown) to push the sheet 4 back toward the storage section 1 as indicated by the arrow. The separation roller 12 is configured to rotate only in the direction shown in FIG.

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 pulley 16, 17, and the shirt 11 and feeding roller 8 are connected to the shaft 7 and It rotates in conjunction with the pickup roller 5.

19 is a DC servo motor, 20 is a worm gear attached to the rotating shaft of this DC servo motor 19, and 21 is a pickup roller 5 adjacent to the boo IJ16.
The worm wheel 21 is attached to the shaft 11 of the worm wheel 21, and 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, the rotational force is transmitted to the worm gear 20 and the worm wheel 2.
1 to the shaft 7, and further this shaft 7
From pulley 16. Belt 18. and is transmitted to the shaft 11 via the pulley 17, so that the pick-up roller 5 and the feed-out roller 8 are integrally connected to the shaft 7 and 11, respectively, in the same direction as shown by the arrow a, that is, the sheet 4 is transferred to the storage section 1. It rotates at the same circumferential speed ■1 in the direction in which it is fed out.

On the other hand, when the DC servo motor 19 rotates in the direction opposite to the direction of the arrow e, its rotational force is applied to the shaft 7 as before.
．． 11, so that the pickup roller 5 and the feed roller 8 are rotated together with the shaft 7.11 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 worm gear 21
The structure is such that the rotational force from the worm gear 20 is not transmitted to the worm gear 20.

Reference numeral 22 denotes a sensor as a detection means consisting of a light-emitting element and a light-receiving element arranged vertically opposite to each other in the vicinity of the feed roller 8 and separation roller 12. It is designed to detect.

23a and 23b are high-speed feed rollers disposed on the downstream side of the feed roller 8 and separation roller 12 in the feed direction of the sheet 4 shown by arrow C, and are vertically opposed and placed in contact with each other. Both high-speed feed rollers 23a and 23b each have sufficient frictional force to convey the sheet 4 around the entire circumference, and are rotated at a peripheral speed V2 in the directions of arrows d1 and d2 by a conveyance motor (not shown). .

Here, the circumferential speed V2 of both high-speed feed rollers 23a and 23b is determined by the processing system (for example, when the paper sheets 4 are banknotes) The circumferential speed is set to an interval of 11 that does not interfere with the processing of the recognition unit (which recognizes the denomination of banknotes, etc.), that is, V2=V1·421/2πr.

In addition, for the purpose of downsizing the device, high friction members 9 are usually used.
The radius r of the feed-out roller 8 including the radius r is made small so that the relationship between the circumferential velocities (1) and (2) becomes V2>Vl.

FIG. 9 is a block diagram of a control system that controls the above configuration. As seen in this figure, the DC servo motor 19 and sensor 22 are connected to a control section 24 as a control means, and this control section 24 controls the DC servo motor 19 and the sensor 22. The rotation and the like of the motor 19 and a transport motor (not shown) are controlled.

Next, the operation of the above-mentioned structure will be explained with reference to FIG. 10 as well as FIGS. 7 to 8 and 9.

FIG. 10 is an operation time chart of the main components in FIG. 7, and 31 to S3 in the figure indicate processing steps.

<S1> First, when an instruction to feed out the paper sheet 4 and the number of sheets to be fed are input by human power means (not shown), in response to this, the control section 24 shown in FIG. 9 raises the stage 3 by a drive mechanism (not shown). , the uppermost paper sheet 4 on this stage 3 is pressed against a pickup roller 5.

Subsequently, the DC servo motor 19 rotates according to instructions from the control section 24, and the rotational force is applied to the worm gear 20. Worm boil 21° pulley 16. Belt 18. and the shirt respectively via the pulley 17)7.
11, whereby the pickup roller 5 and the feed roller 8 rotate together with the shafts 7 and 11 in the direction of the arrow a, respectively.

At this time, the separation roller 12 is also rotated in the direction of the arrow by a motor (not shown) or the like.

Therefore, when the pick-up roller 5 rotates, the uppermost paper sheet 4 is moved by a high-friction member 6 provided on its outer periphery.
The high friction member 9 provided on the outer periphery is fed forward by the frictional force between the feed roller 8 and the separation roller 12. It receives a feeding force in the direction of arrow C due to the frictional force.

At this time, at the same time, the paper sheet 4 is separated into the storage section 1 by the separation roller 12 which is rotating in the direction of the arrow by a motor (not shown).
A force is applied to push the paper sheets 4 back to the side, but the frictional force of the separation roller 12 against the paper sheets 4 is smaller than the frictional force of the high friction member 9 against the paper sheets 4. It is sent along the guide plate section 2 in the direction of arrow C.

By the way, the paper sheets 4 fed out by the rotation of the pickup roller 5 are not limited to the topmost one, but due to various factors, the paper sheets 4 come into close contact with each other, and the topmost sheet 4 and the paper sheets 4 below it. Sometimes multiple sheets are rolled out, overlapping each other.

In this case, since the separation roller 12 is slightly engaged with the feed-out roller 8 and the separation roller 9 0 12 is always rotating in the direction indicated by the arrow, that is, in the direction of pushing the paper sheets 4 back into the storage section 1, the top The other sheets 4 are stopped by the separation roller 12, and only the uppermost sheet 4, that is, the sheet 4 that comes into direct contact with the feed roller 8, is sent in the direction of arrow C.

Therefore, the sheets 4 are separated and fed out one by one from the storage section 1, and the fed sheets 4 are already rotated in the directions of arrows di and d2 by the high-speed feed roller 23a by a transport motor (not shown).

23b, and further conveyed to a processing system for the next step by a conveyance path consisting of rollers, conveyance belts, etc. (not shown).

Note that the paper sheets 4 sequentially fed out from the storage section 1 in this manner 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 specified by the separation and feeding process passes through the meshing portion between the feeding roller 8 and the separation roller 12, and this passage is detected by the sensor 22, this Based on this, the control unit 24 supplies current so that the DC servo motor 19 rotates in the direction opposite to the direction of the arrow e, and applies reverse braking until the DC servo motor 19 stops.

At this time, the unillustrated terminals of the DC servo motor 19 may be short-circuited, thereby generating a back electromotive force to apply braking.

Note that the sensor 22 is connected to the feeding roller 8 and the separating roller 1 in advance.
Length 12 in the feeding direction of the paper leaf 4 from the engagement part with 2
When the sheet of paper 4 is fed out in the direction of arrow C, the front end of the sheet of paper 4 is detected by the sensor 22, that is, the rear end of the sheet of paper 4 is placed between the feeding roller 8 and the separation roller 12.
The reverse braking may be applied by detecting that the vehicle has passed through the meshing portion with the vehicle.

When reverse braking is applied to the DC servo motor 19 in this way, the feeding roller 8. Pick up roller 5. Shaft 11. Since the shaft 7 and the pulleys 16 and 17 have a moment of inertia, generally the inertia force in the direction of arrow e is transmitted to the worm gear 20 via the worm wheel 21, but in this example, as described above, Since the reduction ratio between the worm wheel 21 and the worm gear 20 is determined so that no rotational force is transmitted from the worm wheel 21 to the worm gear 20, only the inertial force in the direction of the arrow d is generated due to the inertia moment of the rotating shaft of the worm gear 20 and the DC servo motor 19. Therefore, 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 more than a specified number of sheets 4 from being separated and delivered to the conveyance path due to overrun of the delivery roller 8.

<S3> When the feed roller 8 and the pickup roller 5 are stopped as described above, separation and feeding of more than the specified number of sheets 4 to the conveyance path can be prevented, but at this time, the last sheet 4 of the specified number has already been removed. The paper sheet 4 immediately after is in a state where it is sandwiched between the meshing portion between the feed roller 8 and the separation roller 12.

If this paper sheet 4 is left as it is, it may cause problems during the next separation and feeding, or if it is left for a long time, wrinkles or curls may occur in the paper sheet 4, which may cause problems in the processing system in the next process. To prevent this from occurring, it is necessary to return the sheet 4 caught between the meshing portion of the feed roller 8 and the separation roller 12 to the storage section 1. Therefore, the control section 24, after the feed roller 8 and the separation roller 12 have stopped, Furthermore, direct current is applied for a certain period of time so that the motor 19 rotates in the direction opposite to the direction of arrow e.

As a result, the rotational force of the DC servo motor 190 is transmitted to the feed roller 8 and separation roller 12 via the worm gear 20 and worm wheel 21 to the shaft 7, and further from the shaft 7 to the pulley 16° belt 18. and pulley 17
As a result, the pickup roller 5 and the feed roller 8 work 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 sheet 4 back into the storage section 1. As a result, the sheet 4, which is caught between the meshing portion of the feed roller 8 and the separation roller 12, is picked up by the frictional force of the high friction members 9 and 3 4 provided on the outer periphery of the feed roller 8. The roller 5 is returned to the storage section 1 by the frictional force with the high friction member 6 provided on the outer periphery of the roller 5 .

When the paper sheet 4 is returned to the storage section 1, the control section 24 stops the rotation of the DC servo motor 19, thereby stopping the rotation of the feed roller 8 and the pickup roller 5, and the stage 3 is further lowered and the rotation of the DC servo motor 19 is stopped. The process ends.

[Problem to be solved by the invention]

However, in the conventional separating and feeding device described above,
When a sheet of paper is sent from the feeding roller to the high-speed feed roller, the sheet is pulled by the high-speed feed roller, which rotates at a faster circumferential speed than the feeding roller, causing friction due to sliding between the sheet of paper and the feeding roller. This friction causes the high-friction member of the feeding roller to wear out and the friction to decrease, resulting in a problem that double feeding is more likely to occur.

Additionally, the paper sheets fed out from the storage section are normally separated one by one by a separation roller, but for example, external vibrations may prevent the separation roller from properly separating the sheets, resulting in a chain of paper sheets. Even though there are two chained paper sheets, when they are detected by a sensor near the feeding roller, the control section considers them to be one sheet and counts them.

However, when these chained sheets are sent from the feed roller to the high-speed feed roller, the chained sheets separate one by one due to the difference in circumferential speed between the feed roller and the high-speed feed roller, and are carried on the conveyance path to the next process. The paper sheets are transported to the processing system, and the processing system detects them and the control unit counts them as two sheets, so the count value of the paper sheets when they are fed out from the storage unit and the count value in the processing system do not match.
As a result, there is also the problem that it becomes impossible to manage the number of paper sheets.

The present invention was made to solve the above problems,
Paper sheet separation feeder that suppresses wear on the high-friction member of the feed roller to prevent double feeding of sheets and poor feeding, and also enables accurate counting of the number of sheets during feeding.5 6 The purpose is to realize a device.

[Failure to solve the problem]

In order to achieve the above-mentioned object, the present invention raises a stage provided in a storage section to press paper sheets on the stage against a pickup roller, rotates the pickup roller, and presses a paper sheet on the stage to a part of its outer periphery. The provided high-friction member feeds paper sheets to the meshing part between the feed-out roller and separation roller located at the front end side of the storage section, and the rotation of this feed-out roller causes the high-friction member provided on a part of its outer periphery to A paper sheet separation and feeding device that uses a member to feed paper sheets from the storage section and feed them to a high-speed feed roller, and returns paper sheets other than the sheets that are in direct contact with the feeding roller to the storage section side by rotation of a separation roller. A low-speed feed roller rotating at the same circumferential speed as the feed-out roller is disposed between the feed-out roller and the high-speed feed roller, and a detection means for counting the number of paper sheets near the high-speed feed roller. It has been established.

[Effect]

In the present invention having the above-described configuration, the paper sheet fed out by the pickup roller, the feeding roller, and the separating roller is fed to the low speed feed roller, and is sent from this low speed feed roller to the high speed feed roller, and then the sheet is fed to the high speed feed roller. After the paper sheets are detected and counted by the detection means in the vicinity of the sheet, the paper sheets are further transported to the processing system for the next step by the transport path.

Therefore, according to this, the paper sheet that has passed through the meshing part between the feeding roller and the separation roller is fed by the low-speed feed roller, which rotates at a circumferential speed equivalent to that of the feeding roller. There is no slipping between the leaf and the wear of the high-friction parts due to sliding friction, which eliminates the reduction in frictional force caused by wear of the high-friction parts of the unwinding roller, which is caused by poor unwinding and heavy speed. can be prevented.

Furthermore, even if the separation by the separation rollers is not performed properly due to external vibrations, etc., and the paper sheets are fed out in a chain, the chained paper sheets will not be properly separated when they are sent from the low-speed feed rollers 7-8 to the high-speed feed rollers. The high-speed feed roller and low-speed feed roller are separated due to the difference in circumferential speed, and are then sequentially detected and counted by a detection means installed near the high-speed feed roller, so the number of sheets at the time of feeding can be accurately counted. Since the number of sheets can be counted and there is no discrepancy with the count value in the processing system of the next process, it is possible to reliably manage the number of sheets.

〔Example] Examples will be described below with reference to the drawings.

FIG. 1 is a side sectional view showing an embodiment of the paper sheet separation and feeding device according to the present invention, FIG. 2 is a side sectional view of the paper sheet separation and feeding device when it is feeding out banknotes, and FIG. 3 is a perspective view of the same when it is feeding out banknotes.

In the figure, 1 is a storage section, 2 is a guide plate section, 3 is a stage, 4 is a sheet of paper, 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 a high friction member. groove, 11 is a shaft, 12 is a separation roller, 13
is the groove, 14 is the holding block, 15 is the shaft, 16 and 17
is a pulley, 18 is a held, 19 is a DC servo moke, 2
0 is worm gear, 21 worm foil, 22 sensor,
23a and 23b are high-speed feed rollers, and since these are the same components as in the conventional system, they are designated by the same reference numerals and their explanations will be omitted. 23b is set wider than before.

A slit plate 25 is attached coaxially with the shaft 7 and has a slit 26 at a predetermined position.

Reference numeral 27 denotes a sensor for detecting this slit 26, and as shown in FIG. The distance 14 to the upstream end of storage section 1 is the distance i! from the front end of storage section 1 to the meshing portion of feed roller 8 and separation roller 12! , 3, said slit 26 is arranged to be detected.

9 0 28a and 28b are low-speed feed rollers arranged between the feed roller 8 and separation roller 12 and the high-speed feed rollers 23a and 23b, and the entire circumference of each of them is used to feed paper sheets 4 in the same way as the high-speed feed rollers 23a and 23b. It has sufficient frictional force to convey.

Both low-speed feed rollers 28a and 28b are rotated by a transport motor (not shown) in the el and e2 directions at a circumferential speed v3. Therefore, V3=V1 is set.

29 is a sensor as a detection means consisting of one or more pairs of light-emitting elements and light-receiving elements for detecting the passage of paper sheets 4 and counting the number of sheets; Low speed feed rollers 28a, 28 are located near the downstream side of 23a, 23b.
It is located at a distance of 15 from b, and this distance! 5 is the length I of paper leaf 4! , 2, i! , 5≧22.

FIG. 4 is a block diagram of the control system in this embodiment, in which the DC servo motor 19, sensor 22, etc. are connected to the control section 24, as in the conventional case (FIG. 9), and the sensors 27 and 29 are connected to the control section 24. They are connected to each other and placed under the control of the control section 24.

Next, the operation of the above-mentioned structure will be explained using FIGS. 5 and 6 as well as FIGS. 1 to 4.

FIG. 4 is a control time chart for explaining the operation of this embodiment. In the figure, 31 to S4 indicate processing steps, and FIG. FIG. 2 is an explanatory diagram showing a running state of the vehicle.

<Sl> Now, as shown in FIG. 1, the stage 3 of the storage section 1 has been lowered when the previous paper sheet 4 was fed out, and the uppermost sheet 4 on the stage 3 is not pressed against the pickup roller 5. shall be taken as a thing.

21 2 Therefore, when the instruction to feed out the paper sheet 4 and the number of sheets to be fed are inputted by the human horn means (not shown), in response to this, the fourth
The control unit 24 shown in the figure moves the DC servo motor 19 by arrow e.
The rotational force of the worm gear 20. is rotated in the opposite direction to the worm gear 20. Worm foil 21. Pulley 16. Bell 1-18. and are transmitted to the shafts 7 and 11 via the pulleys 17, respectively, so that the pickup roller 5 and the delivery roller 8 rotate together with the shafts 7 and 11 in the direction opposite to the arrow a.

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

This also stops the rotation of the pick-up roller 5 and feed-out roller 8, but the stopping position of both rollers 5 and 8 at this time is such that the pick-up roller 5 comes into contact with the preset sheet 4 of the high friction member 6. The position, that is, the first
The feeding roller 8 stops at the position 23-ρ4 shown in the figure, and at a position just before the high friction member 9 engages with the separation roller 12.

<S2> In this way, the high friction member 6 of the pickup roller 5
When the stage 3 is stopped above the stage 3, the control section 24 then raises the stage 3 using a drive mechanism (not shown), and presses the uppermost sheet 4 on the stage 3 against the high friction member 6 of the pickup roller 5.

Thereafter, when the DC servo motor 19 rotates in the direction of the arrow e according to an instruction from the control section 24, the rotational force is transferred to the worm gear 20 as described above. Worm foil 21. Pulley 16. Belt 18. and are transmitted to the shaft 7.11 via the pulley 17, respectively, so that the shaft 7.1
1, a pickup roller 5 and a feed-out roller 8 rotate in the direction of arrow a, respectively.

At this time, the separation roller 12 is also rotated in the direction of the arrow by a motor (not shown) or the like.

As a result, the uppermost sheet 4 on the stage 3 is moved by the frictional force with the front high friction member 6 during the first rotation of the pickup roller 5. ! , 4 (-1!3), and the tip thereof moves to a position immediately before the meshing portion between the feeding roller 8 and the separation roller 12, as shown in FIG.

Then, during the second rotation of the pickup roller 5, the paper sheet 4 is further fed and moved due to the frictional force with the high friction member 6.
As a result, the leading end of the sheet 4 is caught between the meshing portion of the feed roller 8 and the separation roller 12, and due to the rotation of the feed roller 8, the frictional force with the high friction member 9 provided on the outer periphery of the sheet 4 is generated. It is fed out from the storage section 1 by a feeding force in the direction of arrow C.

At this time, at the same time, the paper sheet 4 is separated into the storage section 1 by the separation roller 12 which is rotating in the direction of the arrow by a motor (not shown).
A force is applied to push the paper sheets 4 back to the side, but the frictional force of the separation roller 12 against the paper sheets 4 is smaller than the frictional force of the high friction member 9 against the paper sheets 4. It is fed out along the guide plate portion 2 in the direction of arrow C (.

As described above, in this embodiment, the first sheet 4 is fed by a distance of 14 in the first rotation of the pickup roller 5, and the leading edge of the sheet 4 is moved between the feed roller 8 and the separation roller 12 as shown in FIG. After moving to the position immediately in front of the engaging portion, the second rotation of the pickup roller 5 causes the paper sheet 4 to be moved between the feed roller 8 and the separation roller 12 due to the frictional force with the high friction member 6.
This feeding roller 8 is caught in the meshing part with the
It is fed out by the rotation of.

Therefore, the first and second sheets 4 do not approach each other as shown in FIG. 6(1). In other words, the first sheet 4 is shown in Figure 6 (
Since the paper sheet 4 is previously fed by the distance i3 shown in 1) and then fed out, a constant distance can be obtained between it and the second sheet 4 that is fed out next.

As mentioned above, the second sheet 4 is moved between the feed roller 8 and the separating roller 1 due to the frictional force with the first sheet 4.
In many cases, the sheet 4 moves to a position just before the meshing part with the pick-up roller 5, and the same is true for the third and subsequent sheets. ．． Feeding roller 8. and is fed out at regular intervals by the separation roller 12.

Note that if the second or subsequent paper sheets 4 are in close contact with the first sheet 4, the separation roller 12 separates the second or subsequent paper sheets 4.
are separated, but since this operation is performed in the same manner as in the past, its explanation will be omitted here.

The paper sheet 4 fed out by the feeding roller 8 is then sent to the low-speed feed rollers 28a, 28b, and the circumferential speed (3) of the low-speed feed rollers 28a, 28b and the circumferential speed (1) of the feeding roller 8 are as described above. Since they are set equal, the high friction member 9 of the feed roller 8 and the low speed foot roller 28a.

There is no slippage between the high-friction member 9 and the high-friction member 28b, so that the high-friction member 9 is free from wear and decrease in frictional force caused by slippage, and poor feeding and mold retention are prevented.

The paper sheet 4 is further transferred to this low speed foot roller 28a.

28b to high-speed feed rollers 23a, 23b.

Here, the paper sheet 4 is accelerated by a speed of "'V2-V3" by the high-speed feed roller 23a23b, and as shown in FIG.
As shown in I), the paper sheet 4 passes through the sensor 29 at an interval "T-2πr·V2/V3" that does not interfere with the processing in the processing system of the next step, and the sheet 4 is detected by this sensor 29 and the number of sheets passing through is counted. It is counted by the control unit 24 and further transported to a processing system, also not shown, via a transport path, not shown.

Note that when the paper sheet 4 is sent from the low-speed feed rollers 28a, 28b to the high-speed feed rollers 23a, 23b, the difference in peripheral speed between the low-speed feed rollers 28a, 28b
Sliding friction occurs between the paper sheet 4 and the low-speed feed roller 28a.

28b wears out, but this low speed feed roller 28a,
Since 28b only serves to feed the paper sheet 4, wear will not be a problem.

By the way, as mentioned above, the paper sheets 4 are sequentially fed out from the storage section 1 by the pick-up roller 5 and the feeding roller 8, but due to, for example, external vibrations, separation by the separation roller 12 is not performed normally, and the paper sheets 4
may be linked.

However, after this chain of paper sheets 4 passes through the low-speed feed rollers 28a, 28b, as shown in FIG.
), when passing the high-speed feed rollers 23a, 23b, the high-speed feed rollers 23a, 23b
Due to the difference in circumferential speed between the feed rollers 28a and 28b, a distance of 2Vl/Vl·12° separates, which is then detected by the sensor 29 and counted by the control unit 24. It is possible to accurately count the number of 4 pieces.

<S3> When the sensor 29 detects the leading edge of the second to last sheet 4 of the specified number of sheets as shown in FIG. The leaf 4 is monitored as it passes through the sensor 22, and when the trailing end of the last sheet 4 passes through the meshing portion between the feed roller 8 and the separation roller 12 and its passage is detected by the sensor 22, Based on this, the control unit 24 controls the DC servo motor 19.
Apply current so that it rotates in the direction opposite to the direction of arrow e,
Reverse braking is applied until the DC servo motor 19 stops.

At this time, as in the conventional case, the unillustrated terminals of the DC servo motor 19 may be short-circuited, thereby generating a back electromotive force to apply braking. Unfed, the sensor 22 is sent out in advance, and the length of the paper sheet 4 in the feeding direction from the meshing part between the feeding roller 8 and the separation roller 12! ! .
The reverse braking may be applied by detecting that the rear end has passed through the meshing portion between the feed roller 8 and the separation roller 12.

By applying reverse braking to the DC servo motor 19 in this way, the feed roller 8 and the pickup roller 5 are stopped in a short time as explained in the conventional technology, and the paper sheets 4 exceeding the specified number due to overrun are not transferred to the conveyance path. It is possible to prevent it from separating and being drawn out.

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

As a result, the rotational force of the DC servo motor 19 is transmitted to the feed roller 8 and separation roller 12 via the worm gear 20 and worm wheel 21 to the shaft 7, and further from the shaft 7 to the pulley 16° belt 18. and pulley 17
, the pickup roller 5 and the feed roller 8 integrally move the paper sheets 4 into the storage section 1 in the direction opposite to the direction of the arrow a. The sheet 4 rotates in the push-back direction, thereby causing the paper sheet 4 sandwiched between the meshing portion of the feed roller 8 and the separation roller 12 to be affected by the frictional force with the high friction member 9 provided on the outer periphery of the feed roller 8. The pickup roller 5 is returned to the storage section 1 by the frictional force with the high friction member 6 provided on the outer periphery of the pickup roller 5 .

When the paper sheet 4 is returned to the storage section I, the control section 24 stops the rotation of the DC servo motor 19, thereby stopping the rotation of the feed roller 8 and the pickup roller 5, and further, according to instructions from the control section 24. 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, when feeding out the paper sheet 4, before raising the stage 3, the DC servo motor 19 is rotated in the direction opposite to the arrow e, and the slit 26 of the slit plate 25 is detected by the sensor 27. The predetermined position of the high friction member 6 of the pickup roller 5 is controlled to come into contact with the paper sheet 4, and the DC servo motor 19 is rotated in the direction of arrow e, and the slit 26 of the slit plate 25 is moved to the sensor position. It is also possible to control the high friction member 6 of the pickup roller 5 to a predetermined position where it should come into contact with the paper sheet 4 by detecting it at 27.

Further, in the above embodiment, the slit plate 25 and the sensor 27
was used as a detection means for detecting the position of the high friction member 6. However, a switch is arranged around the axis of the shaft 7, and a protrusion or the like for operating the switch is provided on the shaft 7, and the switch and the protrusion are arranged around the axis of the shaft 7. The position of the high friction member 6 relative to the paper sheet 4 can also be controlled by using the same as a detection means.

〔Effect of the invention 〕

As explained above, in the present invention, a low-speed feed roller that rotates at the same circumferential speed as the feed-out roller is arranged between the feed-out roller and the high-speed feed roller, and the number of sheets is controlled near the high-speed feed roller. The paper sheets fed by the pickup roller, the feeding roller, and the separation roller are fed to a low-speed feed roller, and the sheets are fed from the low-speed feed roller to the high-speed feed roller. After the paper sheet is detected by a detection means near the paper sheet and swiped, the paper sheet is further transported to a processing system for the next step by a transport path.

Therefore, according to this, the paper sheet that has passed through the meshing part between the feeding roller and the separation roller is fed by the low-speed feed roller, which rotates at a circumferential speed equivalent to that of the feeding roller. There is no slipping between the leaf and the wear of the high-friction members due to sliding friction, which eliminates the reduction in frictional force caused by the wear of the high-friction members of the feed-out roller as in the past, resulting in problems such as poor pay-out and vehicle running. This has the effect of being able to prevent this from happening.

In addition, even if the separation by the separation roller is not performed properly due to external vibrations, etc., and the paper sheets are fed out in a chain, the chained paper sheets will be transferred from the low-speed feed roller to the high-speed feed roller. The feed roller and the low-speed feed roller separate due to the difference in circumferential speed, and are then sequentially detected and counted by the detection means installed near the high-speed feed roller, making it possible to accurately count the number of sheets that are fed out. This also eliminates discrepancies with the count values in the processing system of the 3rd and 4th steps, so it is possible to reliably manage the number of sheets.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing one embodiment of the paper sheet separation and feeding device according to the present invention, FIG. 2 is a side sectional view when the paper sheet separation and feeding device is feeding out banknotes, FIG. Fig. 5 is a block diagram of the control system of the embodiment, Fig. 5 is an operation time chart of the embodiment, Fig. 6 is an explanatory diagram showing the running state of paper sheets in the embodiment, and Fig. 7 is a conventional paper sheet bone feeder. FIG. 8 is a side sectional view of the conventional example shown in FIG. 7, FIG. 9 is a block diagram of the control system of the same conventional example, and FIG. 10 is an operation time chart thereof. ■ = Storage section 3: Stage 5: Pick-up roller 6: High friction member 7: Shirt 1-8: Feeding roller 9: High friction member 2 Guide plate section 4: Paper sheet 10: Groove 12: Separation roller 15 Shaft 18: Belt 20: Worm gear 22: Sensors 23a, 23b 23: Control section 26: Slits 28a, 28b 29: Sensor

Claims (1)

[Claims] (1) By raising the stage provided in the storage section, the paper sheets on the stage are brought into pressure contact with the pick-up roller, and the pick-up roller is rotated and the high-friction member provided on a part of the outer periphery of the paper sheet is The material is sent to the meshing part between the feeding roller and the separation roller located at the front end of the storage section.
Further, as the feed roller rotates, a high-friction member provided on a part of its outer periphery feeds paper sheets from the storage section and feeds them to the high-speed feed roller. In a paper sheet separation and feeding device that returns leaves to the storage section side by rotation of a separating roller, a low-speed feed roller that rotates at the same peripheral speed as the feeding roller is disposed between the feeding roller and the high-speed feed roller, and A paper sheet separation and feeding device characterized in that a detection means for detecting paper sheets is provided in the vicinity of the high-speed feed roller, and the number of paper sheets fed out from the storage section is counted based on the detection information of the detection means.