JP2913999B2 - Paper sheet separation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet separating apparatus which separates and conveys sheets stored in a hopper one by one like 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 sending means have the same outer dimensions as the feed roller, and a gate is provided. It has a role of separating and guiding a sheet by overlapping with a roller.
As described in Japanese Patent Application Laid-Open No. 2-209330, it is smaller than the outer dimensions of the feed roller and is provided as a guide.

[0003]

According to the above-mentioned prior art, variations in sheet size to be handled by the separation mechanism are small (for example, in Japanese banknotes, 1,000-yen banknotes 76 mm × 150 mm, 5,000-yen banknotes 7
Under the conditions of 6 mm x 155 mm and 76,000 yen banknotes 76 mm x 155 mm), the optimization of the outer diameter and mounting position of the guide rollers provided on both outer sides of the feed roller has been devised and determined. However, there is a large variation in the sheet size to be handled by the separation mechanism (for example, in the case of a French bill, a 20-franc bill 75 mm × 1
The bills are 40 mm, 100 franc bills 85 mm × 160 mm, and 500 franc bills 97 mm × 181 mm. ) Under the conditions, since the deformation state of the paper sheet is significantly different depending on the difference of each paper sheet size, it is difficult to optimize the outer diameter and the mounting position of the guide rollers provided on both outer sides of the feed roller. When feeding a large paper sheet, a problem occurs in that the paper sheet is damaged due to wrinkles generated in the central part of the paper sheet.

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

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a pickup roller having a high friction coefficient member such as rubber at a part of a roller for abutting a sheet group and feeding out a frontmost sheet, and a sheet downstream of the pickup roller. A feed roller having a high coefficient of friction member such as rubber on a part of the roller for separating and conveying 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 when feeding, the roller radius dimension is smaller than the feed roller radius dimension,
When the high friction coefficient member of the pickup roller is not in contact with the paper sheet, a guide roller having a roller radius dimension equal to the feed roller radius dimension is provided. The separation mechanism is achieved by providing a gate roller made of a high friction coefficient member on the outer periphery that is not rotated in the sheet conveying direction and is pressed against the outer peripheral surface by an appropriate spring force.

[0006]

According to the above configuration, it is possible to realize a good sheet separating apparatus which does not generate wrinkles or damage when the sheet is fed, regardless of the rigidity, thickness, size, and number of sheets stored.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1, 2 and 3 show the main structure of a paper sheet separating apparatus. The pickup roller 18 is attached to the shaft 32 as a feeding means having a high friction coefficient member 19 on a part of a roller circumference which rotates to feed the paper sheet.
A feed roller 20 as sending means having a high coefficient of friction member 20a on a part of the circumference of the roller for sending out paper sheets;
Next to the feed roller 20, a transport roller 2 having the same outer diameter as the feed roller 20 and having a high friction member on the circumference of the roller.
0b and feed high friction coefficient member 19 of the pickup roller 18 at both outer ends of the roller 20 abuts the paper, feed out <br/> and when is the roller radius is the feed roller 2
When the high friction coefficient member 19 of the pickup roller 18 is not in contact with the paper sheet, a guide roller 21 having a roller radius equal to the radius of the feed roller 20 is provided on the shaft 35 when the high friction coefficient member 19 of the pickup roller 18 is not in contact with the sheet. It is. Pickup roller 18 and the feed roller 2 0 of each of the high friction coefficient member 19,20a phase, when the high friction coefficient member 19 of the pickup roller 18 is a paper abutting, the feed roller 2 0 high friction coefficient member 20a Are in contact with the gate roller 15 which is in pressure contact with the feed roller 20. Gate rollers 15 is a high friction coefficient member, made of a soft et paddle material, so as to face pressed against the feed roller 20 by a suitable tensile force of the spring 11. The gate roller 15 does not rotate in the transport direction, but can rotate in the opposite direction via a one-way clutch to prevent wear of the same portion.
Been paper is separated one by one by a high coefficient of friction members 20a and the gate roller 15 of the feed roller 2 0, guide 24
, And are conveyed downstream by pinch rollers 22, 23 which are in pressure contact with the conveyance roller 20b. Front plate 1
7, the guide member 36 and the gate roller guide 37 serve as sheet guides. The bottom plate 12 that stores the sheet group P in the upright state receives the pressing force of the pressing plate 10 from the spring 38, and the paper is moved along the shaft 14. In order to press the leaf group P against the pickup roller 18 smoothly, a plate 38 of a low friction coefficient member is provided.
The passage sensor 16 detects the number of fed sheets. The sheet conveyed from the separation unit is transferred to a conveyance path that is rotated by a separation path drive motor and another conveyance path drive motor. The transport path includes a transport belt 27 hung on a pulley 25 of a drive shaft and a pulley 25 of a driven shaft,
Roller 26 and guide 28 driven and rotated by opposing pressure contact with roller 7
It consists 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 driving motor (not shown) via a timing pulley 40 and a timing belt 39. Width adjuster 29
Has a structure that can be adjusted according to the size of the paper sheet stored in the paper sheet storage unit. FIGS. 2 and 3 show the storage state of small-sized paper sheets, and FIGS. 4 and 5 show the storage state of large-sized paper sheets.
It is shown in

Next, the operation of this embodiment will be described with reference to FIGS. 4, 5, 6, 7, and 10. FIG. 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 for pickup roller 18
9 feeds the foremost sheet of the sheet group P to a pressure contact / separation resistance section composed of a gate roller 15 and a feed roller 21. In the pressure-isolation resistor section, the paper sheets fed by the high coefficient of friction member 19 of the pickup roller 18, the friction coefficient of the high friction coefficient member 20a of the feed roller 2 0 is greater than the friction coefficient between the sheets, and a gate Since the condition is such that the friction coefficient of the roller 15 is larger than the friction coefficient between the sheets, the roller 15 is always separated into one sheet. At this time, the state of the forefront of the sheet group P in contact with the separation mechanism is as shown in FIG.
As shown in, the free end portion which is not in contact with the pickup roller 18 those are protruding to the pickup roller 18, the feed roller 2 0 side. From this state, the frontmost sheet of the sheet group P is removed from the high friction coefficient member 1 of the pickup roller 18.
9, the guide roller 21 is smaller than the feed roller 20 in radius.
Since the free end of the sheet group remains in the protruding state, no conveyance resistance occurs. Next, as shown in FIG. 7, after the high friction coefficient member 19 of the pickup roller 18 feeds the paper sheet, when it is out feed me by the pinch roller 22 and 23 sandwiching force of the conveying roller 20b is a guide roller 21 The radius dimension is equal to the radius dimension of the feed roller 20 , so that the protruding state of the free end of the sheet group is corrected. FIGS. 4 and 5 show the states A and B shown in FIG. 10B, and FIGS. 6 and 7 show the state C shown in FIG. 10B. In the symbols in the drawing, P1 is the leading sheet of the sheet group, P2 is the next sheet at the beginning of the sheet group, Fp is the conveying force of the high friction coefficient member 19 of the pickup roller 18, and Fpi is the pinch rollers 22 and 23. The transfer force. Like this one
The sheet separated into sheets can be reliably conveyed by the pinching rollers 22 and 23 provided on the downstream side and the clamping force of the conveying roller 20b, and is further transferred to a downstream conveying path. Even when the thickness of the paper sheet is different, one sheet can be always separated from the difference in the coefficient of friction as described above, and the deformation of the gate roller 15 and the tensile force of the spring 11 cooperate.
Stable one-sheet separation becomes possible.

FIGS. 8 and 9 show a state in which a large-sized sheet is separated according to the prior art. FIG. 8 shows a guide plate 33,
FIG. 9 shows a case where a guide roller 34 having the same radius is provided. In any of the methods, the transport resistance F due to the contact between the protruding portion of the free end of the sheet group and the guide plate 33 and the guide roller 34 in the state shown in FIG.
r acts on the sheet P1, and as shown in the state C, the sheet P1
Large deformation occurs in the vicinity of the center of the camera, which becomes an obstacle such as being unable to be conveyed downstream.

[0011]

According to the present invention, with a simple structure, wrinkles and damages do not occur at the time of feeding the paper sheet regardless of the size, rigidity, thickness, and number of stored paper sheets. A high performance paper sheet separation apparatus can be provided.

[Brief description of the 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 large paper sheets are stored.

FIG. 7 is a front view of a state in which a paper sheet is fed when large paper sheets are stored.

FIG. 8 is a front view of a state in which a large-sized paper sheet is fed out according to the related art.

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

FIG. 10 is an explanatory diagram of a state in which wrinkles occur when large-sized paper sheets are fed.

[Explanation of symbols]

18: pickup roller, 20: feed roller, 2
1: guide roller, 20b: transport roller, 22, 23 ...
Pinch roller, 27 ... Conveyer belt, 29 ... Width adjustment plate, 3
9 ... Timing belt.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65H 1/00-3/68

Claims (1)

(57) [Claims] A feed roller for feeding out the stacked paper sheets, a feed roller provided with a high friction member in a part for feeding the paper sheets fed by the feeding means, and a feed roller opposed to the feed roller. A separating means for separating sheets, wherein the high-friction member of the delivery roller has a smaller diameter than the high-friction member of the delivery roller when the high-friction member is in contact with the sheet. And a sheet separating apparatus provided with a guide roller having a diameter equal to that of the high friction member of the delivery roller when the high friction member of the delivery roller is not in contact with the paper sheet.