JPH10162190A - Paper processing equipment - Google Patents

Abstract

(57) [Summary] The present invention prevents the reference roller from bending,
An object of the present invention is to provide a sheet processing apparatus capable of accurately detecting a moving amount of a detection roller and accurately detecting a thickness of a sheet. The present invention relates to a transport roller pair for transporting banknotes.
And the banknotes H conveyed by the conveying roller pairs 5 to 7 are introduced between the reference roller 8a and the detection roller 8b which is pressed against and separated from the reference roller 8a. It has a detecting means 13 for measuring the separation width of the detection roller 8b separated from the roller 8a to detect the thickness of the bill H, and a holding roller 21 pressed against the reference roller 8a. Holding means for holding the reference roller 8a so as not to bend due to the pressing force of the detection roller 8b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet processing apparatus for detecting and identifying the thickness of a sheet such as a bill.

[0002]

2. Description of the Related Art A thickness detecting mechanism provided in a sheet processing apparatus of this kind includes a reference roller and a detection roller which can be freely moved toward and away from the reference roller. (Sheets), the detection roller is separated from the reference roller according to the thickness of the bill,
By measuring the separation distance of the detection roller, the thickness of the bill is detected.

In this thickness detecting mechanism, the detection roller is set at a predetermined position in order to prevent the detection roller from jumping up due to a collision when a bill (sheets) is introduced between the reference roller and the detection roller. Is pressed against the reference roller with the pressing force.

[0004]

However, since the reference roller is fixedly supported at both ends, when the detection roller is pressed, a bending stress is generated in the reference roller by the pressing force, and the maximum deflection is generated at the center of the reference roller. Occur.

[0005] If the reference roller bends, an error occurs in the amount of movement (thickness detection amount) of the detection roller at the time of thickness detection, and the thickness of the bill cannot be accurately detected. Was.

Accordingly, the present invention provides a sheet processing apparatus capable of preventing the reference roller from being bent, accurately detecting the amount of movement of the detection roller, and detecting the thickness of the sheet accurately. The purpose is to do.

[0007]

According to the present invention, in order to solve the above-mentioned problems, the present invention is based on a conveying means for conveying paper sheets and a paper sheet conveyed by the conveying means. It is introduced between a roller and a detection roller which is pressed against and separated from the reference roller, and the thickness of the paper sheet is detected by measuring a separation width of the detection roller separated from the reference roller by this introduction. There is provided a detecting means, and a holding means having a holding roller pressed against the reference roller, and holding the reference roller so that the reference roller is not bent by the pressing force of the detecting roller.

According to a second aspect of the present invention, there is provided a conveying means for conveying a sheet, a reference roller for detecting the sheet conveyed by the conveying means, and a detecting roller for pressing the sheet so as to be able to come and go with the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the sheet, and a portion of the reference roller where the detection roller is pressed. And holding means for holding the reference roller so that the reference roller is not bent by the pressing force of the detection roller.

According to a third aspect of the present invention, there is provided a conveying means for conveying a sheet, a reference roller for pressing the sheet conveyed by the conveying means, and a detecting roller for pressing the sheet so as to be able to come and go with the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the sheet, and a portion of the reference roller where the detection roller is pressed. And a holding roller that is pressed against a portion on the opposite side to rotate in accordance with the rotation of the reference roller. The holding roller holds the reference roller so as not to bend by the pressing force of the detection roller. Holding means.

According to a fourth aspect of the present invention, there is provided a conveying means for conveying a sheet, a reference roller for detecting the sheet conveyed by the conveying means, and a detection roller for pressing the sheet so as to be able to come and go with the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the sheet, and a portion of the reference roller where the detection roller is pressed. A holding roller that presses against the reference roller with a force in a direction opposite to the pressing direction of the detection roller at a portion opposite to the detection roller, and the reference roller is bent by the pressing force of the detection roller by the holding roller. And holding means for holding so as not to be caught.

According to a fifth aspect of the present invention, there is provided a conveying means for conveying a sheet, a reference roller for pressing the sheet conveyed by the conveying means, and a detecting roller for pressing the sheet freely to and away from the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the sheet, and a portion of the reference roller where the detection roller is pressed. And a second holding roller for holding the first holding roller in contact with a portion opposite to the first holding roller. The first and second holding rollers allow the reference roller to detect the reference roller. Holding means for holding the roller so as not to bend by the pressing force of the roller.

According to a sixth aspect of the present invention, there is provided a conveying means for conveying a sheet, a reference roller for pressing the sheet conveyed by the conveying means, and a detecting roller for pressing the sheet so as to be able to come and go with the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the sheet, and a portion of the reference roller where the detection roller is pressed. A plurality of first holding rollers and a plurality of second holding rollers respectively holding the plurality of first holding rollers, which are pressed into contact with a portion on the side opposite to the first and second holding rollers, and the plurality of first and second holding rollers. Holding means for holding the reference roller such that the reference roller is not bent by the pressure contact force of the detection roller by a holding roller.

According to a seventh aspect of the present invention, there is provided a conveying means for conveying a sheet, a reference roller for pressing the sheet conveyed by the conveying means, and a detecting roller for pressing the sheet so as to be able to freely contact and separate from the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the sheet, and a side of the reference roller on which the detection roller is pressed. And a plurality of holding rollers disposed along the axial direction at a portion opposite to the portion, and the reference rollers are held by the plurality of holding rollers so that the reference roller is not bent by the pressure contact of the detection roller. Holding means.

According to the present invention, the reference roller is held by a holding roller so as not to be bent by the pressure contact of the detection roller, so that the movement amount (thickness detection amount) of the detection roller at the time of detecting the thickness of a sheet is detected. The thickness of a banknote can be accurately detected by accurately detecting it.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 2 is an overall configuration diagram showing a bill discriminating apparatus as a paper sheet processing apparatus. This bill identifying device is mounted on a cash dispenser (hereinafter, referred to as ATM) used in a bank or the like, and when a bill is inserted into an ATM, the bill is transported to the bill identifying device and its authenticity is determined. After that, it is stored in the ATM.

In FIG. 1, reference numeral 1 denotes an apparatus main body. A bill insertion slot 2 for inserting a bill H as a paper sheet on one side of the apparatus main body 1, and a bill outlet 3 for discharging the bill H on the other side. Is provided.

In the apparatus main body 1, a transport path 4 for guiding the bill H inserted from the bill insertion slot 2 to the bill outlet 3 is provided horizontally. The transport path 4 includes first to first transport means.
Fourth transport roller pairs 5 to 8 are arranged at predetermined intervals along the transport direction of the bill H.

The first to fourth transport roller pairs 5 to 8 are composed of drive rollers 5a to 8a opposed to each other via the transport path 4 and driven rollers 5b to 8b. A first detecting means 10 for detecting the shape of the bill between the first and second transport roller pairs 5 and 6, and a second detecting means for detecting the magnetism of the bill between the second and third transport roller pairs 6 and 7. 2 detecting means 1
A third detecting means 12 for detecting the color of a bill is disposed between the first, third and fourth transport roller pairs 7 and 8.

The fourth conveying roller pair 8 constitutes a thickness detecting means 13 for detecting the thickness of the bill H. At the time of identification of the bill H, the bill H is inserted from the bill insertion slot 2 of the apparatus main body 1, and the bill H is transported by the first to fourth transport roller pairs 5 to 8 driven to rotate by the drive motor 15.
By this conveyance, the shape of the banknote H is detected by passing the banknote H through the first detection unit 10, and the second detection unit 1
1, its magnetism is detected, its color is detected by passing through the third detecting means 12, and its thickness is detected by passing through the fourth conveying roller pair 8. You. This detection signal is sent to the identification means 16 to determine the correctness thereof, and the identified bill H is discharged from the bill outlet 3.

FIG. 1 is a side view showing a bill detecting mechanism 13 and FIG. 3 is a front view thereof. The thickness detecting mechanism 13 has a fourth conveying roller pair 8, the driving roller 8a serving as a reference roller and the driven roller 8b serving as a detecting roller (hereinafter referred to as the reference roller 8a and the detecting roller 8b).

The reference roller 8a is rotatably fixed at both ends, and the detection roller 8b is pressed against the reference roller 8a at a pressure a by a biasing member (not shown). Detection roller 8
The reference character b rotates following the rotation of the reference roller 8a, and the bill is nipped and conveyed.

The detection roller 8b is attached to a rotation lever 22. The rotation lever 22 is rotatably supported by an angle detection sensor 23, and the amount of rotation is detected by the angle detection sensor 23. The information detected by the angle detection sensor 23 is sent to the identification means 16, where it is identified whether or not the bill H has a predetermined thickness.

A holding roller 21 as a holding means is provided substantially at the center of the lower side of the reference roller 8a, that is, opposed to the detection roller 8b via the reference roller 8a. The holding roller 21 applies a force in the direction opposite to the pressing direction (the direction of the arrow a) of the detecting roller 8b so as to correct the reference roller 8a being bent as shown by a broken line as shown in FIG. (Reference arrow 8)
a is pressed and held.

At the time of detecting the thickness of the bill H, the bill H is connected to the reference roller 8a and the detecting roller 8 as shown in FIGS.
b. At this time, since the detection roller 8b is elastically pressed downward by the urging force of the urging member by the reference roller 8a, it does not jump up and moves upward by the thickness t of the bill H. This movement causes the rotation lever 22 to rotate, and the amount of this rotation is used as the rotation angle sensor 23.
Is detected by That is, the rotation amount of the rotation lever 22 is converted into an electric signal and sent to the identification unit 16.

At this time, the thickness detection amount P of the bill H is determined by the distance between the detection roller 8b and the rotation angle sensor 23 (the rotation lever 2).
Assuming that A) is A, the detection amount P is expressed as P = AsinX °, takes an approximate value to the normal bill thickness t, and is converted into an electric signal.

However, when the reference roller 8a bends due to the pressing of the detection roller 8b in the series of operations for detecting the thickness, the detection amount P decreases by the amount of variation α of the surface of the reference roller 8a due to the bending. P = AsinX °-
It is represented by α, and an error occurs with respect to the normal bill thickness T.

In this embodiment, as described above, since the reference roller 8a is pressed and held by the holding roller 21, the holding force of the holding roller 21 and the pressing force of the detection roller 8b cancel each other, and the reference roller 8a is bent. Is removed to remove the variation α of the reference roller 8a.

FIG. 6 shows a second embodiment of the present invention. In the second embodiment, the reference roller 8a
From the lower side in the axial direction.
Are held by pressing force b1 as shown by the arrow.

That is, the pressing forces a and 3 of the detection roller 8b are
The holding rollers 21 are pressed and held by the plurality of holding rollers 21 so that the pressing force b1 × 3 of the holding rollers 21 becomes equal. According to this embodiment, even when the pressing force of the detection roller 8b is extremely large, the bending of the reference roller 8a can be easily prevented by the plurality of holding rollers 21.

FIG. 7 shows a third embodiment of the present invention. In the third embodiment, the reference roller 8a
A substantially central portion on the lower side of the plurality of first holding rollers 21a,
The first holding roller 21a is pressed and held by a plurality of second holding rollers 21b, 21b, as shown by arrows, as shown by arrows in FIG. Press and hold at 2, that is,
The first and second holding rollers 21a, 21a, 21b are set so that the pressing force a of the detection roller 8b is equal to the pressing force b1 × 2 + b2 × 2 of the first and second holding rollers 21a, 21b.
It is pressed and held by 21b.

According to this embodiment, as in the case of the above-described second embodiment, even if the pressing force of the detection roller 8b is very large, the plurality of holding rollers 21a, 2a
By 1b, the deflection of the reference roller 8a can be easily prevented.

[0032]

As described above, according to the present invention, since the reference roller is held by the holding roller and the reference roller is prevented from being bent by the pressure contact of the detection roller, the thickness of the paper sheet can be accurately detected. Erroneous insertion can be prevented.

Further, since the reference roller is held by the plurality of holding rollers, even if the pressing force of the detection roller against the reference roller is large, it is possible to reliably prevent the reference roller from bending.

[Brief description of the drawings]

FIG. 1 is a side view showing a bill thickness detecting device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a banknote recognition device.

FIG. 3 is a front view showing a bill thickness detecting device.

FIG. 4 is a front view showing a state of detecting the thickness of a bill.

FIG. 5 is a side view showing a state of detecting a thickness of a bill.

FIG. 6 is a front view showing a bill thickness detecting device according to a second embodiment of the present invention.

FIG. 7 is a side view showing a bill thickness detecting device according to a third embodiment of the present invention.

[Explanation of symbols]

 H: Banknotes (sheets) 5-7: Conveying roller pair (conveying means) 8a: Reference roller 8b: Detecting roller 8: Detecting means 21, 21a, 21b: Holding roller (holding means)

Claims (7)

[Claims] 1. A conveying means for conveying paper sheets, and a paper sheet conveyed by the conveying means is introduced between a reference roller and a detection roller which is pressed against and separated from the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the paper sheet, and a holding roller pressed against the reference roller, the holding roller Holding means for holding the reference roller so as not to bend due to the pressing force of the detection roller. 2. A conveying means for conveying paper sheets, and a paper sheet conveyed by the conveying means is introduced between a reference roller and a detection roller which is pressed against and separated from the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the paper sheet; and a portion of the reference roller opposite to a portion where the detection roller is pressed against the sheet. And a holding means for holding the reference roller so as not to be bent by the pressing force of the detection roller by the holding roller. 3. A conveying means for conveying the paper sheets, and the paper sheets conveyed by the conveying means are introduced between a reference roller and a detection roller which is pressed against and separated from the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the paper sheet; and a portion of the reference roller opposite to a portion where the detection roller is pressed against the sheet. Holding means for pressing and contacting the reference roller to rotate following the rotation of the reference roller, and holding means for holding the reference roller so as not to be bent by the pressure contact force of the detection roller by the holding roller. A paper sheet processing apparatus, comprising: 4. A transport means for transporting paper sheets, and a paper sheet transported by the transport means is introduced between a reference roller and a detection roller which is pressed against and separated from the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the paper sheet; and a portion of the reference roller opposite to a portion where the detection roller is pressed against the sheet. A holding roller that presses against the reference roller with a force in a direction opposite to the pressing direction of the detection roller, and holds the reference roller so that the reference roller is not bent by the pressing force of the detection roller. A sheet processing apparatus comprising: a holding unit. 5. A conveying means for conveying paper sheets, and a paper sheet conveyed by the conveying means is introduced between a reference roller and a detection roller which is pressed against and separated from the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the paper sheet; and a portion of the reference roller opposite to a portion where the detection roller is pressed against the sheet. And a second holding roller for holding the first holding roller. The reference roller is bent by the pressing force of the detection roller by the first and second holding rollers. A sheet processing apparatus, comprising: holding means for holding the sheet so as not to be caught. 6. A transport means for transporting paper sheets, and paper sheets transported by the transport means are introduced between a reference roller and a detection roller which is pressed against and separated from the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the paper sheet; and a portion of the reference roller opposite to a portion where the detection roller is pressed against the sheet. A plurality of first holding rollers pressed into contact with each other and a plurality of second holding rollers respectively holding the plurality of first holding rollers. The plurality of first and second holding rollers cause the reference And a holding means for holding the roller so as not to bend by the pressing force of the detection roller. 7. A transport means for transporting paper sheets, and a paper sheet transported by the transport means is introduced between a reference roller and a detection roller which is pressed against and separated from the reference roller. Detecting means for measuring the separation width of the detection roller separated from the reference roller by this introduction to detect the thickness of the paper sheet; and a portion of the reference roller opposite to the side on which the detection roller is pressed. The part has a plurality of holding rollers disposed over the axial direction thereof, and by the plurality of holding rollers,
And a holding unit for holding the reference roller so as not to bend by the pressure contact of the detection roller.