JPH02209330A - Paper sheet separator - Google Patents

Abstract

PURPOSE:To secure such a paper sheet separator that is stable in high reliability without adjustment for a long period of time by installing a soft high frictional member roller, to which pressing force is applied by a spring, in a position being opposed to a low frictional member roller. CONSTITUTION:A high frictional member 46a of a pickup roller 13a feeds a paper sheet in the forefront of a paper sheet group P into a pressure separational resisting part consisting of a gate roller 14 or a lower high frictional member and made of soft material and a roller 12a with a low frictional member on a roller circumference. Hereat, a friction factor between the roller 12a and the paper sheet is set to be smaller than that between both paper sheets as well as between the paper sheet and the gate roller 14 respectively, so that these paper sheets are separated piece by piece without fail. The separated paper sheet is conveyable by dint of piching force between a pinch roller 42 and a feed roller 48. When more than two paper sheets get into the pressure separational resisting part, any double feeding is obviated by deformation of the gate roller 14 and tractive force of a spring 53.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper sheet separation device that separates and conveys banknotes stored in a hopper one by one, like an automatic teller machine. The present invention also relates to a device that separates sheets one by one without adjustment even if the thickness of each sheet changes.

[Conventional technology]

In the conventional apparatus, as described in Japanese Utility Model Application Publication No. 62-83030, the conditions for separating one paper sheet act as if to counteract the deformation of the paper sheet due to the difference in the outer diameter of the feed roller and the roller. It is determined by the spring force of the separate roller that presses against the roller.

[Problem to be solved by the invention]

In the above conventional technology, the conditions for separating one sheet of paper are determined by the deformation of the sheet due to the difference in outer diameter between the feed roller and the roller, and the suppressing force of the separation roller against the roller. The edges of the feed roller and separation roller are easily worn out, and when used for a long period of time, the deformation state of the paper sheet changes, making it impossible to maintain separation conditions and requiring adjustment. In addition, under conditions where sheets of various thicknesses are used, the outer diameter of the feed roller and the roller are always the same, so the number of sheets required for separating one sheet according to the thickness of the sheet is There was a problem in obtaining the deformation.

An object of the present invention is to provide a highly reliable paper sheet separation device that does not require adjustment of the paper sheet separation conditions and is stable over a long period of time regardless of the rigidity and thickness of the paper sheets. It is in.

[Means to solve the problem]

The above purpose consists of a pickup roller that comes into contact with a group of paper sheets and feeds out the frontmost paper sheet, a metal roller installed on a rotating shaft downstream of the pick-up roller that separates and conveys the paper sheets one by one, and a metal roller next to the metal roller. A roller having the same diameter as the metal roller and whose outer periphery is made of a high-friction material is provided, and the roller is located at a position facing the metal roller, and is pressed against the outer periphery of the metal roller by an appropriate spring force. A gate roller whose outer periphery is made of a high-friction material that does not rotate in the direction is provided as a press-contact separation resistance section, and the coefficient of friction between the roller and the sheet of paper is
The coefficient of friction between a sheet of paper and the paper industry is set to be smaller than the coefficient of friction between a sheet of paper and a gate roller, and is achieved by always maintaining the condition for separating one sheet.

(Function) With the above configuration, the condition for separating one sheet of paper is determined by the difference in the friction coefficient between the gate roller and the metal roller and the spring force of the gate roller, so it is not affected by the eccentricity of the metal roller, there is no wear on the metal roller, and the condition is long-term. A stable sheet separation device can be realized without any adjustment.

〔Example〕

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

FIG. 1 and FIG. 2 show the main structure of one paper sheet separation device. The feed roller shaft 50 includes a roller 12a having a low-friction member (for example, a metal material such as a near-aluminum roller or a SUS roller) on the circumference of the roller.

Adjacent to the roller 12a is a feed roller 48 having the same outer diameter as the roller 12a and having a high friction member (eg, rubber, etc.) on the roller circumference. A guide roller 47 is provided on the outside thereof. The timing pulley 43 provided on the feed roller shaft 50 is provided to transmit rotation to the timing pulley 43 of the pickup roller shaft 49 via the timing belt 44.The pickup roller shaft 49 is provided with a pickup roller 13a. A high friction member 46a is provided in a portion of this roller, and when this portion comes into contact with the paper sheet, sufficient conveying force can be generated.

The gate roller 14 is a high-friction member made of a soft material, and is brought into pressure contact with the roller 12a through a support member 52 by an appropriate tensile force of a spring 53. Note that the gate roller 14 does not rotate in the transport direction, but can rotate in the opposite direction via a one-way clutch in order to avoid wear on the same portion. The pinch roller 42 is located at a position facing the feed roller 48, and is pressed against the feed roller 48 by the tension of a spring 40 at the other end of the support member 41. The front plate 37 and the gate roller guide 39 serve as paper sheet guides and also as the push plate 1.
6 receives a pressing force from a spring 38 and presses the sheet group P against the pickup roller 13a.

Next, the operation of this embodiment will be explained using FIGS. 1 and 2. First, in FIG. 1, the pickup roller shaft 49 is driven by a motor (not shown). The feed roller shaft 50 is driven.

The high friction member 46a of the pickup roller 13a moves the frontmost sheet of the sheet group P between the lower gate roller 14 and the roller 1.
2a, the friction coefficient between the roller 12a and the paper sheets is 2, the friction coefficient between the paper sheets and the gate roller 14.
Since the coefficient of friction is set to be smaller than the coefficient of friction with The paper leaf separated into one sheet here is
Pinch roller 42 and feed roller 4 provided downstream
It can be transported reliably by the clamping force of 8. Even if two or more sheets of paper enter the press separation resistance section, the gate roller 14 will be significantly opened due to the deformation of the gate roller 14 made of soft material and the tensile force of the spring 53. Prevent it.

Double shipments can be prevented. In addition, even if the thickness of the paper sheet is different, it is always 1.
In addition to being able to separate sheets, the deformation of the gate roller 14 and the tensile force of the spring 53 cooperate to allow stable sheet separation.

FIG. 3 shows that by providing the high friction member of the feed roller 48 not around the entire circumference but in the same phase as the high friction member 46a of the pickup roller, the high friction member 4 of the pickup roller 13a
The timing of feeding out the banknotes 6a and the feeding timing of the feed roller side are matched, and the banknotes are fed only when the high friction member 45a of the feed roller is used, and on the other roller surfaces,
This is aimed at stabilizing the feeding period of one paper sheet during conveyance, and in FIG. However, the purpose is to reduce costs, and the other configurations are the same as those of this embodiment.

〔Effect of the invention〕

According to the present invention, the sheet separation condition is the roller 12a.

The difference in the coefficient of friction between the sheet of paper and the high friction roller 14.

Since it is determined by the deformation of the high friction roller 14 and the spring force, it is not affected by the eccentricity of each roller, and only the high friction roller 14 changes over time, making conversion easy. 48 can be simplified, and the pressure contact force between the gate roller 14 and the roller 12a can be made unnecessary to adjust. In this embodiment, the gate roller 14 is in the form of a roller, but a method of pressing a rubber pad or the like with a spring is used. A similar effect can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is a side view showing one embodiment of the present invention.
The plan view in the figure, FIGS. 3 and 4 are plan views of other embodiments. 12a...Roller, 13a...Pickup roller, 14...Gate roller, 16...Press plate, 42...
・Pinch roller, 48...Feed roller. 1st Sword 2nd Figure 51 '7'-E-Ra Okinawa P Hean Kaya Gutrolla Kusada No. 12α 0-Ra

Claims (1)

[Claims] 1. A feeding means that is arranged opposite to one side of the paper sheets accumulated in the storage section and rotates to feed out the paper sheets, and a feeding device that feeds out the paper sheets in cooperation with the rotation of the paper sheet feeding means of the storage section. and a separation resistance means that is opposed to the delivery means under a certain pressure and separates the paper sheets one by one by applying a frictional resistance force to the paper sheets to be sent out. In a paper sheet separating device for separating and taking out paper sheets one by one from a storage section, the feeding means is provided with a roller made of a low friction material such as metal,
On the same axis, a high friction member is provided on the outer periphery near the low friction member roller and has the same outer diameter as the low friction member roller, and a delivery roller that feeds the paper sheet without bending is provided as a friction resistance means. A sheet of paper characterized in that a soft high-frictional roller is provided at a position facing the frictional roller and pressed against it by a spring force and is brought into contact with the roller at a constant pressure to separate the sheets one by one. type separation equipment.