JPS63262346A - Device for drawing out sheet paper and its kind - Google Patents

Abstract

PURPOSE:To conduct sure drawing-out regardless of the properties of sheet paper and its kind by providing an endless belt posture maintaining means which pinches and holds the slack portion of an endless belt having latitudinally gate portion forming grooves in such a way that the slack portion comes into contact with the surface of the paper and its kind. CONSTITUTION:A portion of plural gate portion forming grooves for the purpose of coming into contact with the surface of the front-positioned paper of a paper group P is formed on the outer surface of an endless belt 7 made up of such a material having a greater frictional coefficient as rubber or the like. Also, a posture maintaining means 8 is provided on the lower side of the endless belt 7, and this means 8 is composed of a pulley 10 which brings the endless belt 7 into strike and contact with an intermediate rotary body 9, a drive pulley 11 and a belt 12, and the lower surface of the endless belt 7 is press-contacted to the upper surface of this belt 12 and a slack portion plate 7A is formed. Furthermore, at the upper part of a drawing-out opening 3 is provided a gate forming member 14 forming a gate portion 13 which passes only a sheet of paper between itself and the groove portion of the endless belt 7.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a paper sheet feeding device that feeds paper sheets one by one from a group of accumulated paper sheets. The present invention relates to a paper sheet feeding device that feeds out the foremost paper sheet one by one from a group of accumulated paper sheets by frictional contact.

(Prior art) Conventionally, in order to count, identify, throw out, and perform various other processing of paper sheets such as banknotes, paper sheets have been collected one by one from a group of accumulated paper sheets in which a large number of paper sheets are stored in an array. There are paper sheet feeding devices that take out and convey paper sheets, but these devices generally have a friction roller in frictional contact with the surface of the foremost paper sheet, and the rotation of this friction roller drives the paper sheet to feed out one sheet at a time. There is.

(Problem to be Solved by the Invention) However, in the case of the paper dispensed by a friction roller as described above, the contact portion with the paper surface is a line contact, and therefore, in the case of banknotes, new banknotes have a certain surface texture. However, if the surface texture of circulating banknotes is uneven, such as wrinkles or creases, they may slip easily, making feeding unstable, especially if they have to be fed at regular intervals. In some cases, the intervals may be uneven, causing problems in post-processing.

For this reason, conventionally, in order to provide a feeding device that needs to perform reliable feeding, a suction head is used to attract and separate paper sheets one by one, and after separation, the paper sheets are fed out by a feeding means.

However, in the case of using the above-mentioned suction head, it is necessary to make the suction head perform an oscillating motion in order to separate the paper sheets after adsorbing them to the suction surface of the suction head. There is a problem in that not only is it extremely complicated, but it also requires a large number of vacuum pumps, associated piping systems, switching valves, and other ancillary equipment, making them extremely expensive. In addition, the suction head described above has the disadvantage that there is a limit to the speed at which paper sheets can be delivered because the swinging movement of the suction head and the switching operation of the switching valve to create a vacuum state are inevitably involved.

Therefore, an endless belt having a planar outer surface that comes into contact with the frontmost paper sheet surface of the stacked paper sheet group, and a freely deformable slack part are formed in a part of this endless belt, and the slack part is the part of the stacked paper sheets. An endless belt posture holding means that holds a predetermined portion of the belt so as to be in contact with the frontmost sheet surface of a group of leaves, an outer surface of the endless belt, and a gate forming member, and the belt is fed out by the endless belt. a gate section that allows only one sheet of paper to pass through and restricts the feeding of subsequent paper sheets; and a belt motion imparting means that applies a forced belt movement to the endless belt in the paper sheet feeding direction. and a freely deformable slack portion of the endless belt located upstream from the gate portion in the paper sheet feeding direction is brought into surface contact with the frontmost sheet surface of the stacked paper sheet group to feed the sheet. I devised it.

Although this device eliminates the above-mentioned drawbacks of the conventional device, the gate action by the outer surface of the endless belt and the gate forming member is incomplete, and although it is extremely rare, two sheets of paper may be fed out.

In view of this, the present invention was made for the purpose of solving the problems of the prior art and the developed technology, and provides a paper sheet feeding device that can reliably feed paper sheets.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method for dispensing paper sheets one by one from a group of accumulated paper sheets, in which the outer surface is stored in an aligned state at the forefront of the group of paper sheets. an endless belt having an outer circumferential surface that comes into contact with the surface of the paper sheet, and a gate forming groove formed circumferentially in a predetermined area in the width direction on the outer surface, and a part of the endless belt that can be freely deformed. An endless belt posture holding means for holding a predetermined portion of the belt such that a slack portion is formed and the slack portion is brought into contact with the frontmost paper sheet surface of a group of accumulated paper sheets; and a gate portion of the endless belt. A gate section includes a forming groove section and a gate forming member, and allows only one paper sheet fed out by the endless belt to pass through, and restricts the feeding of subsequent paper sheets; The present invention is characterized by comprising a belt motion applying means for applying a forced belt motion in the direction of feeding out the material.

(Function) As a result, the freely deformable slack portion of the endless belt located upstream from the gate portion in the paper sheet feeding direction is
The paper sheets are fed out in surface contact with the foremost paper sheet in the group of collected paper sheets.

(Example) The present invention will be described below with reference to embodiments shown in the drawings.

In this embodiment, paper sheets will be explained.

The illustrated embodiment shows a case in which paper sheets are stacked vertically and the lowest paper sheets are fed out one after another to one side, and the paper sheets P handled by the knee are , are stacked on the bottom plate 2 of the paper sheet storage section 1, and are formed to be fed out from a feeding opening 3 formed at one end of the bottom plate 2.

A notch 4 is formed in the bottom plate 2 at the center in the width direction extending from the end on the side of the feeding port 3 to near the rear end on the opposite side, and a rotating body 5 is mounted on a shaft at a position directly below the feeding port 3. The rotating body 5 is rotatably supported in only one direction via a one-way clutch (not shown), and an endless belt 7 is wound around the rotating body 5 .

The endless belt 7 is made of a flexible, highly elastic material with a large coefficient of friction, such as rubber, and has a width of about 173 mm, which is the width of the sheet in the feeding direction. The freely deformable slack portion 7A that extends to has a length that extends to the vicinity of the rear end of the sheet P. Further, it is preferable that the width of the endless belt 7 is as wide as possible.

As shown in FIG. 3, the outer surface 7B of the endless belt 7 has outer peripheral surface portions 7C, 7C, which come into contact with the frontmost sheet surface of the two groups of sheets stored in an aligned state.

7C1, and gate forming grooves 7C2 and 7C2 formed in a plurality of circumferential lines (two lines in the illustrated example) in a predetermined area in the width direction of the outer surface 7B.
A gate gap G is formed between the periphery of 4.14 and the periphery of the groove portion 7C7C2. Also, the outer peripheral surface portion 7C of the endless belt 7
1 has a large number of uneven stripes 7D formed in the width direction.

An endless belt posture holding means 8 for holding the belt 7 in a predetermined posture is provided below the endless belt 7, and in the illustrated embodiment, this posture holding means 8 causes the endless belt 7 to move in the direction of the arrow. A case is shown in which the device also serves as a vibration imparting means for imparting vibration.

In other words, the posture holding means 8 is located between the rotary body 5 and an intermediate rotary body 9 mounted on an axis at a distance behind the rotary body 5, and brings the endless belt 7 into contact with the intermediate rotary body 9. -1
0 and a freely deformable slack portion 7 of the endless belt 7.
It consists of a drive pulley 11 that is mounted on the lower part near the rear end of A, and a belt 12 that is wound around these pulleys 10 and 11.
When the bottom surface of the bottom plate is pressed, and when there is no paper sheet P on the bottom plate 2 and there is no pressing member 25, which will be described later, the slack part □ position 7A, which can be freely deformed due to this pressure contact, is attached to the bottom plate 2 as shown by the chain line in FIG. The endless belt 7 is maintained in a position where it should be expanded upward from the upper surface of the belt, and the endless belt 7 is moved in the direction of the arrow by driving the drive pulley 11 in the direction of the arrow.

A gate part 13 is formed at the upper part of the feed opening 3 to allow passage of one sheet P between the gate part 13 and the groove part 7C2 7C2 of the outer surface 7B of the endless belt 7 wound around the rotating body 5. A gate forming member 14.14 is provided corresponding to the groove portion 7C2.7C2 on the outer surface 7B of the endless belt 7.

The above correspondence relationship is the width of the groove portion 7C7C2 of the endless belt 7, as shown in FIGS. 4 and 8.

I L is fl + for the width LN of the gate forming member 14.14
0. The gap M between the bottom of the groove 7C2゜7C2 and the circumferential surface of the gate forming member 14.14 is about 5w/m.
．． It is said to be about 3m/1. The size of the gate gap G is determined by the distance between the peripheral edges 7E, 7E of the groove 7C2 of the endless belt 7 and the peripheral edges 14E, 14E of the gate forming member 14. The above dimensions are for banknotes circulating in Japan, and the thickness of the banknote is approximately 0. This value is for the case of 1 m/-, but in the case of banknotes of other countries or paper sheets other than banknotes, the value is appropriately selected depending on the thickness of the paper sheet.

The gate forming member 14 may have a normal perfect circular roller structure, but in the illustrated embodiment, the circumferential surface is approximately 90'1 in diameter, as shown enlarged in FIGS. 5 and 6. The small diameter portion 14A is formed over a wide range, and the portion connected to the large diameter portion 14B is a concave arc-shaped surface 14C that matches the outer peripheral surface of the endless belt 7 wound around the rotating body 5. The entrance dimension of the gate gap G is determined by the peripheral edges 14E, 14E (shown in the eighth figure) of the peripheral surface end portion 14D of the continuous large diameter portion 14B and the peripheral edges 7E, 7E of the groove portion 7C2 of the endless belt 7. Peripheral part 14E of 14C, 1
4E (shown in the eighth figure) and the peripheral edge portions 7E, 7E of the groove portion 7C2 of the endless belt 7 determine the size of the gate gap G.

When the circumferential end portion 14D of the large diameter portion 14B is worn out and the entrance dimension of the gate gap G is enlarged, a new end portion 14D is formed by slightly rotating the gate forming member 14 in the direction of the dotted arrow. A predetermined gate entrance gap is formed opposite the groove portion 7C2 of the endless belt 7. Further, a circumferential surface portion 14F having a smaller diameter than the outer circumferential surface of the small diameter portion 14A is formed between the gate forming members 14.14, and the circumferential surface portion 14F and the gate forming member 14.14 are integrally formed. ing. As a means for rotating this gate forming member 14, as shown in FIG. A knob 19 is provided on the shaft 18 so that the gate forming member 14 can be slightly rotated by rotating the knob 19, and means for fixing the gate forming member 14 with screws or the like is provided. I'll keep it.

Next, the adjustment state of the gate gap G will be explained in detail with reference to FIGS. 9(A) and (B). When the gate forming member 14 is deeply advanced into the groove portion 7C2 of the endless belt 7 as shown in FIG. 9(A), , the peripheral edges 7E, 7E of the groove portion 7C2, and the peripheral edge 14E of the gate forming member 14.

14E, that is, the gate gap G is small, and the degree of entry of the gate forming member 14 into the groove 7C2 is small as shown in FIG. 9(B), the peripheral edge 7 of the groove 7C2
E, 7E and peripheral portions 14E, 14E of the gate forming member 14
The gap size between the two gates, that is, the gate gap G becomes large.

In addition to the embodiments described above, the gate forming members 14.14 have a perfect circular shape, as shown in an example in FIG. A one-way clutch (not shown) that allows free rotation in the direction opposite to the sheet feeding direction and does not rotate in the opposite direction may be interposed, or it may be completely fixed.

Note that the gate forming member 14' in FIG.

The outer peripheral surfaces 14'A and 14'A of the gate forming member 14.14 correspond to the small diameter portions 14A and 14A of the gate forming member 14. 'F corresponds to the circumferential surface portion 14F, and the dimensions are assumed to be exactly the same.

A pair of upper and lower rollers 20, 20, 21, and 21 are disposed at a predetermined position spaced apart on the downstream side of the gate section 13 and are axially mounted at symmetrical positions, which grip and convey the delivered paper sheet P.
A conveying means 22 consisting of the following is provided.

Freely rotating rollers 23, 23 are rotatably provided on the outer side of the gate forming member 14, 14 by shafts 24, 24. M for the outer peripheral surface 7C, 7C,
The groove portion 7C7 of the endless belt 7 is arranged with a gap N, N of about 1 m1ta, which is a dimension that satisfies the condition of AN.
Circumference 2'' of C2 Edges 7E, 7E and periphery 1 of gate forming member 14.14
4E and 14E hold down the sheet of paper that is slightly bent as shown in FIGS. 9(A) and (B), and when the endless belt 7 expands when all the sheets have been fed out, its outer peripheral surface 7C1 becomes free. It is designed to contact only the circumferential surface of the rotating roller 23.23. Note that the central outer peripheral surface portion 7C1 of the endless belt 7
The gap between the circumferential surface portion 14F and the gap M is slightly larger than the gap M, which assists the gate action and also allows the free rotation roller 23
．． 23 and the outer circumferential surface portion 7C of the endless belt 7.

In FIG. 1, reference numeral 25 denotes a pressing member that is placed on the upper surface of the two groups of paper sheets stacked and stored in the paper sheet storage section 1 and presses the endless belt 7 to maintain it in the state shown by the solid line in FIG. Pressing body 2
6, and a plate-shaped pressing plate 27 which is approximately the same size as this pressing body 26 and placed along the lower surface of the pressing body 26, and is provided protrudingly from the front and rear upper surfaces of this pressing plate 27 in the sheet feeding direction. Bin 28.
29 is a long hole 30 formed in the suppressing body 26 and long in the front-rear direction.
The pin 28 and the pressing body 2
A tension spring 35 is tensioned between a pin 34 protruding from the rear part of 6 and is normally kept in the state shown in the figure. Therefore, when the paper sheets P in the paper sheet storage section 1 are exhausted, the pressing plate 27 is moved to the outer circumferential surface portions 7C1, 7C1 of the endless belt 7,
7C1, the freely deformable slack portion 7A at the rear of the endless belt 7 follows the movement of the endless belt 7 as it deforms into a flat shape, and moves together to prevent frictional contact between the two, thereby preventing wear. It has become.

Reference numeral 36 is a guide plate formed by extending the lower end of the front 91A of the paper sheet storing section 1, and guides the upper surface of the paper sheet P; 37 is provided following the front end of the bottom plate 2, and guides the lower surface of the paper sheet P. 38 is a drive motor, 39 is a pulley on the shaft 40, 41 is a belt that transmits rotation to the shaft 42 of the roller 20. It is wound between the pulley 40 and the pulley 40.

In the above embodiment, when performing intermittent feeding in which paper sheets P are fed out at predetermined intervals, the conveying means 2
The driving speed of the rollers 20, 20.degree. In particular, in this embodiment, the drive pulley 11
Since the outer diameter of the roller 20 is approximately equal to the outer diameter of the roller 20, the smaller the diameter of the boot 9-43 is with respect to the diameter of the pulley 39, the faster the roller 20 is than the belting speed of the endless belt 7.
The driving speed becomes faster.

Hereinafter, the operation of the above-mentioned paper sheet feeding device will be explained in Fig. 11(A)~
This will be explained with reference to (F).

As shown in FIG. 11(A), a large number of paper sheets P are arranged and stored in a stacked state in the paper sheet storage section 1, and a suppressing member 25 is placed on the upper surface of the paper sheet P to apply pressure. As a result, the freely deformable slack portion 7A that swells upward from the endless belt 7 due to the lower surface of the foremost paper sheet P and protrudes upward from within the notch 4 of the bottom plate 2
is pressed and brought into close contact with the lower surface of the sheet P.

When the drive pulley 11 is rotated in the direction of the arrow based on the dispensing command, both the pulley 10 and the belt 12 are rotated in the direction of the arrow, and the part of the pulley 10 rotates the endless belt 7 between it and the intermediate rotating body 9. Since they are sandwiched, the rotating body 5 and the intermediate rotating body 9 are rotated in the direction of the arrow via the endless belt 7, and the rear end side of the portion of the endless belt 7 wound around the rotating body 5 (see FIG. 11) is rotated in the direction of the arrow. Since the position 7' of A) is pulled, the freely deformable slack portion 7A is moved in the direction of the arrow while maintaining the posture shown in FIG. 11(A).

When the endless belt 7 moves in the direction of the arrow as described above, the foremost paper sheet P that is in surface contact with the upper surface of the freely deformable slack portion 7A is pushed out to the left in the figure due to the contact friction. The second and subsequent sheets of paper P are stopped by the gate portion 131 and only one sheet is fed out from the feeding port 3.

When the leading edge of the fed paper sheet P is caught between the rollers 20 and 21 of the conveyance means 22 as shown in FIG. Since the sheet P is faster than the paper sheet P, it is pulled from the moment it is held in the mouth, and since the lower rear surface of the fed sheet P is pressed against the endless belt 7, the endless belt 7 is pulled together due to the friction between them. Therefore, Figure 11 (
Since the slack 7' is not formed on the front side of the rotating body 5 as shown in C), the rotation body 5 follows the advance of the sheet P. At this time, the rotating body 5 is also rotating at the same speed as the endless belt 7.

As a result, when the trailing end of the paper sheet P finishes passing through the gate part 13, when the paper sheet P passes through the gate part 13, when the paper sheet P passes through the gate part 13, when the paper sheet P passes through the gate part 13, when the paper sheet P passes through the gate part 13, when the paper sheet P passes through the gate part 13, when the paper sheet P passes through the gate part 13, or when the paper sheet P is the last sheet, the paper sheet P is ejected from under the pressing member 25. Sometimes, as shown in FIG. 11(D), the freely deformable slack portion 7A approaches the intermediate rotating body 9, and the slack 7' becomes maximum.

At this stage, the trailing end of the paper sheet P is pulled out from the gate section 13 and sent to the downstream side by the conveyance means 22, while the drive pulley 1 of the posture holding means 8 is pulled out as shown in FIG. 11(E).
1, only the lower half of the endless belt 7 moves to the right in the figure so as to eliminate the slack 7', and comes into contact with the upper half, that is, the lower surface of the foremost sheet P in the storage section 1. The part is not moved and remains stationary, and the 11th
The state shown in FIG. 11(F), in other words, returns to the state shown in FIG. 11(A).

Note that the rotating body 5 stops rotating from FIG. 11(E) to FIG. 11(F).

At this time, the previously fed paper sheet P is ready to be sent to the downstream side by the conveying means 22, and the next paper sheet P to be fed out is ready to be gripped.

When the state shown in FIG. 11(F) is restored, the upper half of the endless belt 7 starts to move in the direction of the arrow again due to the rotation of the posture holding means 8, and the next sheet P is fed out on its upper surface. , thereafter, similar actions are repeated to sequentially feed out the blades.

Therefore, by appropriately selecting the driving speed of the conveying means 22, the feeding interval of the paper sheets P can be arbitrarily selected, and after feeding one sheet P, the endless belt 7
Since the upper half of the sheet P remains stationary until the next sheet P is fed out, intermittent feeding is ensured.

In the above action, when all the stored paper sheets have been fed out, the outer surface 7B of the endless belt 7 tries to expand upward by the thickness of the paper sheet P, but at the gate part, both sides of the endless belt 7 The outer circumferential surfaces 7C, 7C, of the rollers 23, 23 contact the circumferential surfaces of the free rotating rollers 23, 23 disposed at opposing positions, and the free rotating rollers 23, 23 rotate in synchronization with the belt movement of the endless belt 7, In addition to preventing wear due to frictional contact, contact between the endless belt 7 and the gate forming member 14 14 is also prevented, and wear of the gate forming member 14 14 and the endless belt 7 is prevented. The freely deformable slack portion 7A at the rear of the endless belt 7 contacts the pressing member 25, but this pressing member 26
Since the suppressing plate 27 on the lower surface of the endless belt 7 follows the shifting movement of the endless belt 7 and slides therewith, wear in this portion is also prevented.

In the illustrated embodiment, the paper sheets P are stacked and stored, and the paper sheets P are fed out sequentially starting from the lowest one. For example, the paper sheet P at the forefront is fed out downward or upward.
The feeding direction is not restricted, and can be appropriately selected depending on the application, and can be applied to other similar items other than the amount of paper. Although the case is shown in which the means is also used as the posture holding means 8, the posture holding means 8 has a suppressing function of simply displacing the freely deformable slack portion 7A of the endless belt 7 toward the sheet P side, A driving roller may be pressed against a position of the body 5 or a portion corresponding to the intermediate rotary body 9 to impart a belt motion to the endless belt 7. Further, the suppressing member 25 is not limited to a plate shape, and may be a suppressing roller, and may be configured to press as the amount of stacked sheets decreases. Furthermore, the gate part 13,
The configuration of the conveyance means 22 and the like is not limited to the illustrated embodiment, and design changes may be made arbitrarily without departing from the technical idea of the present invention.

〔Effect of the invention〕

As explained above, according to the present invention, the endless belt that performs the feeding function and the sheet surface come into surface contact, and since the endless bell is flexible, the contact pressure ensures reliable operation regardless of the properties of the sheet. It can be rolled out, and even if there are wrinkles or creases like circulating banknotes, it will not be a problem (it can be rolled out, etc.).

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing one embodiment of the paper sheet feeding device according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a perspective view of the endless belt in FIG. 1, and FIG. 4 is a gate of the same. Part 1
FIG. 5 is a sectional view taken along the line V-V in FIG. 2, FIG. 6 is a sectional view taken along the Vl-Vl line in FIG. The side view, ff18, is a cross-sectional view showing the details of the gate part, FIGS. 9(A) and (B) are explanatory diagrams showing the state in which the gate gap is changed, and FIG. 10 is a diagram showing the gate forming member in FIG. 1. 11(A) to 11(F) are explanatory diagrams showing the operating state of the modified example. 7...Endless belt, 7A...Freely deformable slack portion, 7B...Outer surface, 7C1...Outer peripheral surface portion, 7C
2... Groove for forming gate part, 8... Endless belt posture holding means, 13... Gate part, 14... Gate forming member, P... Paper sheet. Applicant's agent Sato - Yube 1E2] Fig. 3 %4 Fig. 2 9 IPJ5 Fig. 6 Q Fig. 7 1% r'-1 (A) (C) (B) (D)

Claims (1)

[Claims] In a device that feeds paper sheets one by one from a group of accumulated paper sheets, an outer circumferential surface portion that contacts the frontmost sheet surface of the group of paper sheets whose outer surface is stored in an aligned state, and a predetermined portion in the width direction on the outer surface. An endless belt having a groove for forming a gate part formed in the circumferential direction in the area, and a slack part that can be freely deformed is formed in a part of this endless belt, and the slack part is placed at the forefront of the group of accumulated paper sheets. an endless belt posture holding means for holding a predetermined portion of the belt so as to be in contact with the sheet surface of the endless belt, a groove for forming a gate portion of the endless belt, and a gate forming member, and the endless belt is fed out by the endless belt. The present invention includes a gate portion that allows only one sheet to pass through and restricts the feeding of subsequent sheets, and a belt motion imparting means that applies a forced belt movement to the endless belt in the direction in which the sheets are fed out. , a freely deformable slack portion of the endless belt located upstream from the gate portion in the paper sheet feeding direction is brought into surface contact with the foremost sheet surface of the stacked paper sheet group, and is fed out. Characteristic paper sheet feeding device.