JPH05301646A - Paper sheet separating device - Google Patents

Abstract

PURPOSE:To prevent the generation of wrinkles and damage specially at the time of delivering paper sheets of large size by specifying the radial dimension of guide rollers, provided at both outer ends of a feed roller shaft, in relation to the contact phase between the sheet and the high friction coefficient parts of pickup rollers. CONSTITUTION:Paper sheets delivered in by pickup rollers 18 are positively separated sheet by sheet by feed rollers 20 and gate rollers 15. While the foremost sheet of a sheet group P is being delivered in the separated state by the high friction coefficient members 19 of the pickup rollers 18, the radial dimension of the guide rollers 21 is smaller than that of the feed rollers 20, and the free end part of the sheet group is left in the pushed-out state, so that carrier resistance is not generated. When the sheet is being delivered by the holding force of pinch rollers 22, 23 and carrier rollers 20b after being delivered by the high friction coefficient members 19, the radial dimension of the guide rollers 21 becomes equal to that of the feed rollers 20, and the pushed-out state of the free end part of the sheet group is corrected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet separating apparatus for separating paper sheets stored in a hopper one by one and conveying them, as in an automatic teller machine.

[0002]

2. Description of the Related Art In a conventional apparatus, as described in Japanese Patent Publication No. 54-3222, rollers provided on both outer sides of a feed roller as a sheet feeding means have the same external dimensions as the feed roller and a gate. It has a role of separating sheets and a guide by overlapping with rollers, and
As described in JP-A-2-209330, it is smaller than the outer dimensions of the feed roller and is provided as a guide.

[0003]

In the above-mentioned prior art, there is little variation in the paper size to be handled by the separating mechanism (example: Japanese banknote: 76-yen banknote 76 mm × 150 mm, 5,000-yen banknote 7
6 mm x 155 mm, 76 mm x 155 mm banknotes), we have devised and decided how to optimize the outer diameter dimensions and mounting positions of the guide rollers provided on both outer sides of the feed roller. However, there is a large variation in the paper size that the separation mechanism must deal with (eg, for French banknotes, 75 francs of a 20 franc banknote 75 mm x 1).
It is 40 mm, 100 franc bill 85 mm x 160 mm, 500 franc bill 97 mm x 181 mm. ) Under the conditions, since the deformation state of the paper is significantly different due to the difference of each paper size, it is difficult to optimize the outer diameter size and the mounting position of the guide rollers provided on both outer sides of the feed roller. There is a problem that wrinkles occur in the central portion of the paper sheet when the large paper sheet is fed and the paper sheet is damaged.

An object of the present invention is to provide a highly reliable paper sheet separating device for feeding out paper sheets one by one, regardless of the rigidity, thickness, size, and number of stored paper sheets.

[0005]

SUMMARY OF THE INVENTION The above object is to provide a pickup roller having a high friction coefficient member such as rubber in a part of a roller that comes into contact with a paper sheet group and feeds the frontmost paper sheet, and a paper sheet downstream of the pickup roller. A feed roller having a high friction coefficient member such as rubber in a part of the roller for separating and conveying the sheets one by one,
When the high friction coefficient member of the pickup roller abuts the paper sheet at both outer ends of the feed roller and the sheet is being fed, the roller radial dimension is smaller than the feed roller radial dimension,
When the high friction coefficient member of the pickup roller is not in contact with the sheet, a guide roller having a roller radial dimension equal to the radial dimension of the feed roller is provided and is located at a position facing the feed roller. This is achieved by forming a separating mechanism by providing a gate roller having a high friction coefficient member on the outer periphery that is not rotated in the paper sheet transport direction and is pressed against the outer peripheral surface by an appropriate spring force, and does not rotate in the sheet conveying direction.

[0006]

With the above construction, it is possible to realize a good paper sheet separating device in which wrinkles and damage do not occur at the time of feeding the paper sheet, regardless of the rigidity, thickness, size, and the number of stored sheets.

[0007]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1, FIG. 2 and FIG. 3 show the main components of the paper sheet separating apparatus. A pickup roller 18 is provided on a shaft 32 as a feeding means having a high friction coefficient member 19 on a part of the circumference of a roller that rotates to feed the paper sheet.
A feed roller 20 as a feeding means having a high friction coefficient member 20a on a part of the circumference of the roller for feeding the paper sheets;
Adjacent to the feed roller 20, a conveyance roller 20b having the same outer diameter as the feed roller 20 and a high friction member on the roller circumference, and a high friction coefficient member 19 of the pickup roller 18 at both outer ends of the feed roller 20 are provided. When the high-friction coefficient member 19 of the pickup roller 18 is not in contact with the paper sheet, the roller radius is smaller than the feed roller 21 when the roller is in contact with and is feeding. A guide roller 21 having a radius equal to that of the shaft 35 is provided on the shaft 35.
The phases of the high friction coefficient members 19 and 20a of the pickup roller 18 and the feed roller 21, respectively, are set so that when the high friction coefficient member 19 of the pickup roller 18 contacts the sheet,
The high friction coefficient member 20a of the feed roller 21 comes into contact with the gate roller 15 that is in pressure contact with the feed roller 20. The gate roller 15 is a member having a high coefficient of friction and is made of a soft material, and is configured to come into contact with the feed roller 20 while being pressed against it by an appropriate pulling force of the spring 11. The gate roller 15 does not rotate in the carrying direction, but can rotate in the opposite direction via a one-way clutch in order to prevent wear of the same portion.
The sheet separated by the high friction coefficient member 20 a of the feed roller 21 and the gate roller 15 into one sheet is guided by the guide 24.
And is conveyed downstream by the pinch rollers 22 and 23 that are in pressure contact with the conveying roller 20b. Front plate 1
7, the guide member 36, and the gate roller guide 37 serve as paper sheet guides, and the bottom plate 12 for accommodating the paper sheet group P in an upright position receives the pressing force of the pressing plate 10 from the spring 38 and moves the paper along the shaft 14. A plate 38 having a low friction coefficient member is provided to smoothly press the leaf group P against the pickup roller 18.
The passage sensor 16 detects the number of fed sheets. The paper sheet conveyed from the separation unit is delivered to the conveyance path rotated by a conveyance path drive motor different from the separation unit drive motor. The transport path includes a transport belt 27 hung on the drive shaft pulley 25 and the driven shaft pulley 25, and the transport belt 2
Roller 26 and guide 28, which are pressed against 7 and are driven to rotate.
It is composed of. The shaft 32 and the shaft 35 are attached to the frame 30 via a bearing 31, and are driven by a separation unit drive motor (not shown) via a timing pulley 40 and a timing belt 39. Width plate 29
Has a structure that can be adjusted according to the size of the paper sheet stored in the paper sheet storage section. FIGS. 2 and 3 show a state in which small-sized sheets are stored, and FIGS. 4 and 5 show a state in which large-sized sheets are stored.
It is shown in.

Next, the operation of this embodiment will be described with reference to FIGS. 4, 5, 6, 7 and 10. In FIG. 4, by driving a separation unit drive motor (not shown),
The pickup roller shaft 32 and the feed roller shaft 35 are driven. High friction coefficient member 1 of pickup roller 18
9 feeds the frontmost paper sheet of the paper sheet group P into the pressure contact separation resistance portion composed of the gate roller 15 and the feed roller 21. In the pressure contact separation resistance portion, the paper sheet fed by the high friction coefficient member 19 of the pickup roller 18 has a friction coefficient of the high friction coefficient member 20a of the feed roller 21 that is larger than the friction coefficient between the paper sheets, and the gate roller. Since the friction coefficient of 15 is a condition for increasing the friction coefficient between the sheets, it is always separated into one sheet. At this time, the state of the frontmost part of the paper sheet group P which is in contact with the separating mechanism is as shown in FIG.
As shown in FIG. 3, the free end portion which is not in contact with the pickup roller 18 protrudes toward the pickup roller 18 and the feed roller 21. From this state, the frontmost sheet of the sheet group P is moved to the high friction coefficient member 1 of the pickup roller 18.
When the sheet is being fed by 9, the guide roller 21 has a radius smaller than that of the feed roller, and the free end portion of the sheet group remains in the protruding state, so that conveyance resistance does not occur. Next, as shown in FIG. 7, after the high friction coefficient member 19 of the pickup roller 18 sends out the sheet,
When the pinch rollers 22 and 23 and the conveying roller 20b are fed by the holding force, the radius of the guide roller 21 becomes equal to the radius of the feed roller, and the protruding state of the free end of the sheet group is corrected. It is like this. The states of a and b shown in FIG. 10B are FIGS. 4 and 5, and the states of C shown in FIG. 10B are FIGS. In the figure, P1 is the first paper sheet in the paper sheet group, P2 is the next paper sheet in the first paper sheet group, and Fp is the pickup roller 18.
Is the conveying force of the high friction coefficient member 19, and Fpi is the conveying force of the pinch rollers 22 and 23. The paper sheet thus separated into one sheet has the above-mentioned pinch roller 22, which is provided downstream,
The gripping force between 23 and the conveying roller 20b allows the sheet to be reliably conveyed, and the sheet is further delivered to the downstream conveying path. Further, even when the paper sheets have different thicknesses, it is always possible to separate one sheet due to the difference in friction coefficient as described above, and the gate roller 15
By the deformation and the cooperation of the pulling force of the spring 11, stable one-sheet separation is possible.

The state of separating large-sized paper sheets according to the prior art is shown in FIGS. 8 and 9. FIG. 8 shows a guide plate 33,
FIG. 9 shows that the guide rollers 34 having the same radius are provided. In either method, in the states of (a) and (c) of FIG. 10, the conveyance resistance force F due to the contact between the protruding portion of the free end portion of the paper sheet group and the guide plate 33 and the guide roller 34.
r acts on the paper sheet P1, and the paper sheet P1
A large deformation occurs near the center of the, and it becomes an obstacle such as not being able to convey it downstream.

[0011]

According to the present invention, irrespective of the size of paper sheets, the rigidity, the thickness, and the number of sheets to be stored, wrinkles and damage do not occur at the time of feeding the paper sheets with a simple structure, and it is good at a low price. It is possible to provide a high performance paper sheet separating apparatus.

[Brief description of drawings]

FIG. 1 is a perspective view of a separation mechanism.

FIG. 2 is a side view of a paper sheet separating mechanism when storing small paper sheets.

FIG. 3 is a front view of a paper sheet separating mechanism when storing small paper sheets.

FIG. 4 is a side view of a paper sheet separating mechanism when storing large paper sheets.

FIG. 5 is a front view of a paper sheet separating mechanism when storing large paper sheets.

FIG. 6 is a side view of a paper sheet feeding state when storing large-sized paper sheets.

FIG. 7 is a front view of a paper sheet feeding state when storing large-sized paper sheets.

FIG. 8 is a front view of a large-sized paper sheet according to a related art in a paper feeding state.

FIG. 9 is a front view of a large-sized paper sheet according to the related art in a paper-sheet feeding state.

FIG. 10 is an explanatory diagram of a wrinkle occurrence state when feeding out large-sized paper sheets.

[Explanation of symbols]

18 ... Pickup roller, 20 ... Feed roller, 2
1 ... Guide roller, 20b ... Conveying roller, 22, 23 ...
Pinch roller, 27 ... Conveyor belt, 29 ... Aligning plate, 3
9 ... Timing belt.

Claims (1)

[Claims] 1. A feeding means having a high friction coefficient member in a part on the circumference of a roller, which is opposed to one surface side of the paper sheets accumulated in the storage portion and rotates for feeding the paper sheets, With the feeding means having a high friction coefficient member in a part of the circumference of the roller for feeding the paper sheets in cooperation with the rotation of the paper feeding means of the storing section, and the pressure facing the feeding means. The stacking paper is provided with separation resistance means having the high friction coefficient member on the circumference for giving a frictional resistance force to the paper sheets that are brought into contact with each other and fed to separate the paper sheets one by one. In a paper sheet separating device for sequentially separating and taking out leaves one by one from the storage portion, the paper sheet separating device is provided on both outer sides and coaxially of the sending means,
The shape of the roller is smaller than the outer dimension of the roller of the feeding means when the high friction coefficient member of the feeding means is in contact with the paper sheet and is feeding. When the portion is not in contact with the paper sheet, it has an arc or polygonal shape equal to the outer dimension of the roller of the feeding means, and the width dimension of the roller is such that the target paper sheet comes into contact with the feeding means. A paper sheet separating device, which is approximately equal to a free end portion.