JPS6370106A - Apparatus for detecting thickness of paper money - Google Patents

Abstract

PURPOSE:To prevent erroneous detection caused by the increase in the thickness of paper money due to Z-folding by providing a small diameter part receiving the fold part of the paper money to one of a movable detection roller and a fixed detection roller. CONSTITUTION:When paper money B' is fed in a Z-folding state because there are a plurality of fold lines on a part of the paper money B', the Z-folded part F of the paper money B' is positioned at the small diameter part 13 of a movable detection roller 5 and, therefore, the thickness of the paper money B' is in normal state at the position of the large diameter part 14 of the movable detection roller 5. As a result, the displacement of the movable detection roller 5 is not occurred and the paper money B' is allowed to pass as normal one as it is and trouble such that the paper money b' is sent into a rejection part is prevented and the enhancement of detection accuracy is achieved.

Description

[Detailed Description of the Invention] [Industrial Application Field 1] The present invention relates to a banknote thickness detection device used in banknote deposit machines and the like, and used, for example, to detect banknotes to which adhesive tape is attached. .

[Prior art 1 Banks and other financial institutions use banknote deposit machines to automate the process of depositing banknotes. Damaged banknotes among the deposited banknotes are separated from normal banknotes and stored in a banknote storage unit such as a normal banknote safe, and damaged banknotes are sent to, for example, a removal unit.

Damaged banknotes include damaged banknotes and banknotes whose damaged parts have been repaired with adhesive tape or the like. Here, damaged banknotes are detected by the discrimination section, but taped banknotes whose damaged portions have been repaired with adhesive tape may not be detected by the discrimination section if the adhesive tape is transparent. Therefore, in order to detect such taped banknotes, the banknote deposit machine is equipped with a banknote thickness detection device that detects the thickness of the banknote at a position midway along the banknote transport path.

Such a banknote thickness detection device has a distance that allows only one banknote to pass through a pair of detection rollers, which are made up of a fixed detection roller and a movable detection roller that can be displaced in a direction φ away from the fixed detection roller. The movable detection rollers are arranged facing each other, and a displacement detector is connected to the movable detection roller to detect the amount of displacement of the movable detection roller. As the thickness increases, the movable detection roller is displaced in the direction away from the fixed detection roller, so the thickness of the banknote can be detected by detecting the amount of displacement of the movable detection roller with a displacement amount detector. has been used conventionally.

[Problem to be Solved by the Invention 1] By the way, some of the banknotes deposited by the banknote depositing device have a tendency to bend, and if there are a plurality of banknotes with fold lines close to each other, for example, The banknote is 2
It may be transported in a folded state. When the Z-folded banknote is fed into the banknote thickness detection device, the two folds overlap and increase in thickness, and this increase in thickness is detected, indicating that the banknote is normal and undamaged. Despite this, there was the inconvenience that they were sent to the removal department.

The present invention has been made in view of the above points, and even if the thickness of the banknote increases due to folding, etc., it is possible to reliably prevent the banknote from being mistaken as a taped banknote. The object of the present invention is to provide a banknote thickness detecting device.

[Problem to be Solved by the Invention 1] In order to achieve the above-mentioned object, the present invention provides at least one of a movable detection roller and a fixed detection roller with a small diameter that accommodates the folded portion of a banknote. Its feature is that it has a structure in which a section is formed.

[Operation] The deposited banknote is conveyed along the conveyance path and is conveyed between a pair of detection rollers in the banknote thickness detection device. Therefore, if no foreign matter such as adhesive tape is attached to the transported banknote, the movable detection roller will not be displaced, and the banknote will therefore be considered normal and sent to the subsequent processing steps. On the other hand, when the transported banknote is a banknote pasted with tape, the movable detection roller is displaced in the direction away from the fixed detection roller by the thickness of the tape, and this displacement is detected by a displacement detector to prevent damage, etc. As some abnormal banknotes, for example, it is sent to the rejecting department.

However, if the transported banknote does not have adhesive tape or the like attached to it, but has a large thickness because it has two folds, the Z-fold part is accommodated in the small diameter part formed on the detection roller. Therefore, abnormal thickness will not be detected, and as a result, the detection accuracy of the banknote thickness detection device will be improved.

Here, banknotes are usually folded in half or quarters, and in rare cases, they are folded in three. Therefore, small diameter portions may be formed at positions where these creases are likely to occur. Further, if the width of this small diameter portion is made slightly smaller than the smallest width of commercially available adhesive tapes, taped banknotes can be reliably detected.

[Embodiment 1] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

First, as shown in FIG. A banknote thickness detection device is installed between the carry-in section 2 and the banknote carry-out section 3.

The banknote thickness detection device includes a fixed detection roller 4 and a movable detection roller 5 that can be displaced in directions approaching and separating from the fixed detection roller 4, and the shaft portion 4a of the fixed detection roller 4 is connected to the main body wall portion. 1 and is rotatably supported by a bearing 6. On the other hand, both ends of the shaft portion 5a of the movable detection roller 5 are a pair of detection levers 7a.

7b is rotatably supported by a bearing 8, and the detection levers 7a and 7b can swing around a fulcrum 9, thereby fixedly detecting the IJF motion detection roller 5 supported by the detection levers 7a and 7b. It is configured so that it can be displaced in the direction of approaching or separating from the roller 4.

Detection lever? Springs lOa and 10b are stretched between a and 7b and the main body wall l, respectively, and the movable detection roller 5 is always urged in the direction of approaching the fixed detection roller 4 by the springs 10a and 10b. There is.

A pair of spacing adjustment screws 11 are screwed into the main body wall 1, and the tips of each spacing adjustment screw 11 are brought into contact with detection levers 7a and 7b. Therefore, by screwing the spacing adjustment screw 11, the movable detection roller 5 can be held in a state facing the fixed detection roller 4 with a predetermined spacing therebetween.

Where is the detection lever? Spring 10a attached to a, 7b,
Among the springs 10b, one spring 10a is configured to have a smaller spring force than the other spring 10b, and the detection lever 7 connected to the spring 10a having this small spring force
A displacement detector 12 made of a magnetic sensor or the like that detects the displacement of the detection lever 7a without contacting the detection lever 7a is provided opposite to the detection lever 7a.

Here, in the roller portion 5b of the movable detection roller 5,
At the intermediate portion and at positions spaced apart from the intermediate portion, small diameter portions 13, 13. 114 is formed, and the large diameter part 14 between both ends and each small diameter part 13 forms a detection part that faces the fixed detection roller 4 at a predetermined interval, and the small diameter part 13 is The Z-fold part is the storage part. For this purpose, each vehicle diameter portion 1
3 includes the folds that are normally made on the banknote when it passes through this banknote thickness detection device, that is, at least the quarter position on the long side of the banknote, and the position when the banknote is folded into three; The width of the vehicle diameter portion 13 is smaller than the smallest width of commercially available adhesive tapes.

In addition, the depth of this small diameter portion 13 is the same as that of the Z-folded banknote I.
The thickness at E, that is, the thickness is slightly larger than twice the thickness of the banknote.

This embodiment is constructed as described above, and its operation will be explained first.

First, when a banknote is inserted into the banknote depositing device, the banknote is carried from the paper WSti person section 2 between the fixed detection roller 4 and the movable detection roller 5 in the banknote thickness detection device. Therefore, if the distance between the fixed detection roller 4 and the large diameter portion 14 of the movable detection roller 5 is adjusted by the distance adjustment screw 11 so that it becomes an amount approximately equivalent to the thickness of one sheet of paper WS, it is possible to achieve normal operation. When a banknote in a normal state passes, the movable detection roller 5 is not displaced. Therefore, this banknote is considered to be normal and is transported as it is to the counting hand discrimination section.

On the other hand, as shown in FIG. When passing through, the movable detection roller 5 is displaced in the direction away from the fixed detection roller 4 by the amount by which the adhesive tape T is pasted. Here, the movable detection roller 5
Of the detection levers 7a and 7b that support the detection lever 7a, the spring 10a attached to the detection lever 7a has a spring force J:;< than that of the spring 10b attached to the detection lever 7b. b is almost fixed, and the detection lever? Only the a side will be displaced. Therefore, this amount of displacement becomes larger than when both detection levers 7a, 7b are displaced at the same time, and the amount of displacement is increased. In this way, the displacement of the detection lever 7a is detected by the displacement amount detector 12,
After the banknote B is discharged from the banknote discharge section 3, the conveyance direction is changed at an appropriate position, and the banknote B is sent into the removal section. In addition, for example, when two or more banknotes are transported in an overlapping state or in a folded state, it is difficult for the counting/discrimination department to accurately count and distinguish the banknotes in such a state. Because I can't
An abnormality in the thickness of the banknote is detected by the banknote thickness detection device, and the banknote is sent to the removal section in the same way as the tape-applied banknote.

However, as shown in Figure 4, paper W! If a banknote B' is transported in a Z-folded state because there are multiple fold lines in a part of the banknote B', this banknote B' will be treated as a normal banknote in the banknote depositing device and will be directed to the counting@discrimination section. There is no need to detect an increase in the thickness due to the Z-folded portion F. Therefore, since the Z-folded portion F as described above is located at the small diameter portion 13 of the movable detection roller 5, the thickness of the banknote is normal at the position of the large diameter portion 14 of the movable detection roller 5. It becomes. Therefore, the movable detection roller 5' is not displaced, and the banknote B' is allowed to pass through as a normal banknote, thereby preventing the inconvenience of the banknote being sent to the removal section and improving the detection accuracy. Become.

Here, banknotes are usually folded in half or quarters, and may also be folded in three. Therefore, Z-folded portions generally occur at each of these positions, and since the movable detection roller 5 is formed with small diameter portions 13 at each of the above-mentioned fold occurrence positions, detection of Z-folded banknotes is possible. It becomes possible to almost completely prevent malfunctions. If the width of the small diameter portion 13 is increased, the passage of the Z-folded banknote becomes more reliable even if the transported banknote shifts laterally in the paper ff5 transport path or the position of the Z-folded part is slightly shifted. If this is set too large, taped banknotes may not be detected.

Therefore, the width of the small diameter portion 13 is made as large as possible within a range smaller than this tape width. Specifically, the smallest commercially available adhesive tape is about 12 mm, so
The width of the small diameter portion 13 may be 6 to 10 mm, preferably about 8 mm. On the other hand, since the thickness of the banknote is 0.08 mm, the difference in height between the small diameter part 13 and the large diameter part 14, that is, the depth of the small diameter part 13, corresponds to the increase in thickness when the banknote is Z-folded. 0.08 x 2 mm or more, preferably as large as possible, but there may be processing problems,
For example, the distortion prevention 11- of the axis of the movable detection roller 5. Considering the above, it is most desirable to set the depth to about 0.3 mm.

Since most of the folds that are usually made in banknotes are at three points when folded into four, the small diameter portions 13 can be provided at three points corresponding to these positions.
That purpose can be fully achieved. If the rare occurrence of three folds is taken into consideration, by adding two more locations to form five locations, it becomes possible to almost completely prevent the occurrence of detection errors due to two folds. However, in the embodiment described above, seven locations are provided. This is achieved by reducing the width of the large diameter portion 14 that performs thickness detection as much as possible, so that the banknote can
This is to increase the blood pressure per unit area as much as possible when the banknotes are sandwiched between the In addition, the wrinkles can be smoothed out, and detection errors due to increased pressure on wrinkled banknotes can be prevented from occurring.

In the above embodiment, the small diameter portion and the large diameter portion are formed on the movable detection roller 5 side, but these may be formed on the fixed detection roller 4 side. 4.5 may also be provided. Further, the detection roller on the side where the small diameter portion is not provided may be provided with a spiral groove for removing dust and the like adhering to banknotes when it is transferred to the detection roller. Furthermore, a detection lever 7a that supports the movable detection roller 5.

7b and springs 10a each having a different spring force.

10b, each of these springs 10a
, 10b may be made to have the same spring force, or the detection lever on the side to which the displacement amount detector 12 is not provided may be fixedly supported.

[Effects of the Invention] As explained above, the banknote thickness detection device according to the present invention has a small diameter portion that accommodates the folded portion of the banknote in at least one of the fixed and movable detection rollers. With this structure, even if the thickness of a banknote increases due to Z-folding or the like, there will be no detection error in which the banknote is erroneously detected as a taped banknote, and the detection accuracy is significantly improved.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a banknote thickness detection device constituting an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIGS. 3 and 4 are operation explanatory diagrams. 4: Fixed detection roller, 5: Movable detection roller, 12: Displacement amount detector, 13: Small diameter section, 14: Large diameter section.

Claims (2)

[Claims] (1) A fixed detection roller and a movable detection roller that can be displaced in the direction toward or away from the fixed detection roller are arranged facing each other with an interval that allows one banknote to pass, and the movable detection roller has a displacement detector. in which the thickness of the banknote is detected based on the amount of displacement of the movable detection roller,
A banknote thickness detection device characterized in that at least one of the detection rollers is formed with a small diameter portion for accommodating a folded portion of a banknote. (2) The banknote thickness detecting device according to claim 1, wherein the small diameter portion is formed at a position corresponding to each fold of the banknote when the banknote is folded in half.