JPH0114611Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a paper sheet feeding mechanism used in a front and back alignment section of an automatic teller machine.

In an automated teller machine (paper sheet processing device), a bundle of banknotes (paper sheets) inserted from an input slot at the time of deposit is fed out one by one by a feeding unit provided near the input slot, and the banknotes are fed out one by one by a first discriminating unit. (distinguish whether the paper is true or false), align the front and back sides in the front and back alignment section, and pool them once. Once all the input paper defects have been pooled, the paper is fed out one by one again and sent to the second discrimination section (paper discrimination section). Each denomination is stored in multiple safes provided within the device through our own denomination, damage, and dirt identification system. Further, at the time of payment, the banknotes corresponding to the details of the customer's operation are taken out from the corresponding safe and pooled at once in a pool section, and when all the banknotes are pooled in the pool section, the banknotes are discharged to the payment slot. During these processes, transaction details are printed, and a receipt imprinted with the embossed characters of the magnetic card inserted by the customer is ejected along with the magnetic guard, and a journal with the same information printed and imprinted is left in the device. .
Paper sheet feeding in the front and back alignment section is performed by a paper sheet feeding mechanism provided in the front and back alignment section.

[Conventional technology]

A conventional sheet feeding mechanism of this type is shown in FIG. In the figure, 1 is an upper plate and 2 is a lower plate. The upper plate 1 is supported via a pin 5 by an arm 4 that swings about a fulcrum 3, and the lower plate 1 is supported via a pin 7 by an arm 6 that swings about a fulcrum 3 common to the upper plate 1. There is. These upper plate 1 and lower plate 2 are normally positioned at the position shown by the solid line (except when feeding paper sheets), and paper sheets such as paper sheets being conveyed are placed on the lower plate 2 in this state with their front and back sides aligned. It will be pooled once. In this case, for example, paper sheets in a normal state with the upper side facing forward are pooled along a path indicated by an arrow line A, and paper sheets in an irregular state whose upper side is reverse side are pooled along a path indicated by an arrow line B. When all the sheets have been pooled, the upper plate 1 and the lower plate 2 clamp the sheets and move to the feeding position shown by the chain line. In this state, a part of the pick roller 8 for feeding paper sheets protrudes from a hole 9 formed in the lower plate 2 and comes into pressure contact with the paper sheets held between the upper plate 1 and the lower plate 2. Paper sheets are fed out by rotating the pick roller 8 counterclockwise in this state. That is, the paper sheets positioned at the feeding position are fed out one by one from the bottom to the next process by the rotation of the pick roller 8.

[Problem that the invention attempts to solve]

However, since the upper plate and the lower plate are generally made of a material with a small coefficient of friction such as a metal plate,
During sheet feeding, it was not possible to reliably stop the sheet that the upper plate was in contact with, resulting in paper sheet displacement and sheet buckling, which resulted in the inability to perform stable sheet feeding.

[Means for solving problems]

The purpose of the present invention is to provide a sheet feeding mechanism that can solve the above-mentioned problems.As a means to achieve this purpose, the present invention provides a A plurality of sheets of paper stacked and stored between the upper and lower plates are held between the upper and lower plates, and by swinging the upper and lower plates, the upper and lower plates are positioned at a feeding position, and pressed against the sheets of paper and rotated. In a processing device equipped with a mechanism for feeding paper sheets sequentially from the bottom using a pick roller, a pad having a coefficient of friction larger than that of the upper plate is attached to a surface of the upper plate facing the lower plate, and the attachment range of the pad is , the upper plate and the lower plate are configured so that when they are positioned at the feeding position while holding paper sheets, they cross a straight line passing through the center of the pick crawler and orthogonal to the lower plate, regardless of the number of paper sheets being held. We are hiring.

[Effect]

Since a pad with a large friction coefficient is attached to the surface of the upper plate facing the lower plate, the paper sheet that comes into pressure contact with the upper plate is securely fixed by this pad, and the attachment range of the pad is limited to the upper plate and the lower plate. It is set so that when it grips the paper sheet and is positioned at the feeding position, it straddles a straight line passing through the center of the pick roller and orthogonal to the lower plate, and the couple of force of the support force of the pick roller and the pressing force of the pad is Since it does not work on the paper sheets being held, it is possible to prevent the paper sheets from slipping or buckling and to perform stable sheet feeding.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a side view of a paper sheet feeding mechanism according to the present invention, in which members having the same structure as the conventional one are given the same reference numerals as the conventional one.

In the figure, 11 is an upper plate, and on the lower surface of the upper plate 11,
A pad 12 made of a rubber plate or the like having a thickness of about 1 mm and having a larger coefficient of friction than the upper plate 11 is attached. The attachment range of this pad 12 is such that when the upper plate 11 and the lower plate 2 are sandwiching paper sheets and positioned at the feeding position shown by the chain line, the pad 12 passes through the center of the pick roller 8, and the lower plate 2 It is set so as to straddle the straight line 0-0, which is orthogonal to the line 0-0. Position A of the upper plate 11 at the feeding position is when 100 sheets of paper are held, and position B is when one sheet of paper is held.

As described above, in the present invention, a pad 12 with a large friction coefficient is attached to the lower surface of the upper plate 11, and the paper sheet at the feeding position is fed out while being in pressure contact with this pad 12. The paper sheets no longer slip when they are fed out. In addition, the mounting range of the pad 12 is set as described above, and the upper plate 11, which swings around the fulcrum 3 and is positioned at the extended position, is attached to the lower plate 2 when it is in position A and when it is in position B. On the other hand, even if the pad 12 is shifted in the left-right direction, the pad 12 always straddles the straight line 0-0. does not work and the paper sheet does not buckle. Therefore, the paper sheets are fed out stably. If the attachment range of the pad 12 is not set as described above, for example, as shown in FIG.
When positioning), the supporting force P of the pick roller 8 and the pressing force Q of the pad 12 act as a couple because they act through the distance a. As a result, the paper sheets buckle and the feeding becomes unstable. The reason why the attachment range of the pad 12 is set as described above is to prevent this problem from occurring.

[Effect of idea]

As described above, according to the present invention, it is possible to always stably feed out sheets at the feeding position regardless of the number of sheets.

[Brief explanation of the drawing]

Fig. 1 is a side view of a sheet feeding mechanism showing an embodiment of the present invention, Fig. 2 is an explanatory view of the same operation, and Fig. 3 is a side view of a conventional sheet feeding mechanism. , 3 is a common fulcrum, 4 and 6 are arms, 5 and 7 are pins, 8 is a pitch roller, 11 is an upper plate, and 12 is a pad.

Claims (1)

[Scope of utility model registration request] A plurality of sheets of paper stacked and stored between an upper plate and a lower plate that are swingable about a common fulcrum are held between the upper plate and the lower plate, and brought to a feeding position by swinging the upper plate and the lower plate. In a processing device equipped with a sheet feeding mechanism in which paper sheets are fed out sequentially from the bottom by a pick roller that positions and presses against the paper sheet and rotates, a pad having a coefficient of friction larger than that of the upper plate is provided on the surface of the upper plate facing the lower plate. The attachment range of the pad passes through the center of the pick roller and is perpendicular to the lower plate, regardless of the number of paper sheets held, when the upper plate and the lower plate are positioned at the feeding position while holding paper sheets. A paper sheet feeding mechanism characterized by being set to straddle a straight line.