JPH0611992Y2 - Paper thickness detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is directed to a reference conveying roller that is fixedly provided facing a conveying path of paper sheets, and an excessive roller with respect to the conveying roller for reference. It has a thickness detection roller that can move in the retreat direction when a paper sheet of various thicknesses passes, and a detection unit that detects the amount of movement of this thickness detection roller. The present invention relates to a thickness detection device that detects passage.

[Prior art and its problems]

In the conventional sheet thickness detecting device as described above, a thickness detecting roller that is opposed to the reference conveying roller is pivotally supported by an arm, and the arm is a support shaft at a fixed position whose axial direction is the conveying width direction. The center of the arm is swingable, and the swing of the arm is detected by a detector.

Therefore, even in the case of a paper sheet (such as a tape-attached banknote) having an excessive thickness only in a part in the conveying width direction, it is detected in the same manner as the double-layered paper sheet.

Therefore, when the paper sheets to be handled are banknotes, there is a problem that it is difficult to detect banknotes that should be distinguished from banknotes such as a folded corner banknote and a tape-bonded banknote that are overlapped with two banknotes.

[Purpose of device]

In view of this, the present invention has been made for the purpose of providing a sheet thickness detecting device capable of reliably detecting a sheet such as a folded corner or a tape-attached banknote.

[Outline of device]

In order to achieve the above-mentioned object, a thickness detecting device according to the present invention comprises a reference conveying roller which is fixedly provided facing a conveying path, and a paper sheet which has an excessive thickness with respect to the reference conveying roller. In a thickness detecting device comprising a thickness detecting roller movable in a retreat direction when passing a class, and a detecting means for detecting a moving amount of the thickness detecting roller,
The reference transport roller is configured such that a plurality of reference transport rollers are provided at intervals in the axial direction of the reference transport roller shaft, and the roller portions and the circumferential grooves are alternately arranged.
At least one roller portion which is provided on the thickness detecting roller shaft so as to correspond to the reference conveying roller and faces the roller portion of the reference conveying roller and has substantially the same width as the roller portion; An eccentric case, which is provided at each end of the reference transport roller, has an outer peripheral surface eccentric from its axis, is rotated during adjustment, and is positioned in a fixed state after adjustment, and both ends of the thickness detection roller. A fixed ring of a bearing that is provided, is pressed against the outer circumference of the eccentric case by pressure, and can be separated from each other, and a guide plate having a guide groove that regulates the moving direction of the fixed ring during adjustment and thickness detection, Each detector that detects the amount of movement of each of the fixed rings, and each detector that contacts the fixed ring and expands the amount of movement of the fixed ring by the rocking lever ratio to activate the detector. It characterized an arrangement for and a chromatography.

[Example of device]

 The present invention will be described below with reference to the embodiments shown in the drawings.

In the embodiment shown in the drawing, two thickness detecting rollers are provided for one reference carrying roller to detect the overlapping of two banknotes and unfit notes (square bent notes, taped notes, etc.) It shows a case in which the detection and the detection of bills handled as unfit bills are shared.

As shown in the side view of FIG. 1 and the right front of FIG. 1 in FIG. 2, left and right side plates 1 and 1 are provided in parallel on both sides of the banknote P in the conveying direction. Guide plates 2 and 2 are fixed to the outer surfaces of 1 and 1, respectively.

A reference carrying roller 3 is provided between the side plates 1 and 1, and a thickness detecting roller 4 is provided to face the upper and back portions of the roller 3.
And 5 are provided.

The reference carrying roller 3 has the shaft portions 3A, 3A at the ends thereof.
Is rotatably supported by the side plates 1, 1 via bearings 6, 6 such that the shafts 3A, 3A are provided with adjusting bearings 7, 7 at their outer ends.

The adjustment bearings 7, 7 are composed of an inner ring 7A fixed to the shaft portions 3A, 3A, and an eccentric case 7C fitted to the inner ring 7A via a rotor 7B such as a ball. The outer peripheral surface 7D of the eccentric case 7C is eccentric to the shaft center of the shaft portion 3A.

Each of the eccentric cases 7C, 7C has a fan-shaped part 8, 8
Is fixed, and as shown in FIG. 3, arc-shaped elongated holes 8A centering on the shaft center of the shaft portion 3A are formed in the pieces 8 and 8 and fixed to the side plates 1 and 1 for insertion therethrough. The bolt 9 is inserted, and the eccentric case 7C is fixed by fixing the parts 8, 8 at an arbitrary position.

The shaft portions 4A and 5A of the thickness detecting rollers 4 and 5 are loosely fitted and inserted into the escape holes 1A and 1A of the side plates 1 and 1, respectively.
An inner ring 10A of a bearing 10 is fixed to a shaft end of 5A, and a fixed ring 10 having an outer peripheral surface concentric with the shaft portions 4A and 5A via a rotor 10B such as a ball is attached to the inner ring 10A.
C is relatively rotatably fitted.

The fixed side ring 10C is inserted between the opposing side portions of the L-shaped guide grooves 11, 11 formed in the guide plates 2 and 2, and the outer peripheral surface of the fixed side ring 10C is the reference side. The eccentric cases 7C, 7C of the conveying roller 3 are brought into contact with the eccentric outer peripheral surfaces 7D, 7D by urging means described later.

On the guide plates 2 and 2, the bases of two pairs of detection levers 12, 12, 13 and 13 forming a pair of left and right shafts 14 and 1, respectively.
5 is mounted so as to be swingable, and these levers 12, 1
3 is a fixed side case 10 of the thickness detecting rollers 4 and 5
C and 10C are in contact with the reference conveyance roller 3 on the opposite side by the bias of springs 16 and 17.

The tip ends 12A and 13A of the detection levers 12 and 13 are exposed to the optical sensors 18 and 19, and two-ply banknotes and tapes are provided between the reference conveyance roller 3 and the thickness detection rollers 4 and 5. The movement of the thickness detecting rollers 4 and 5 when a pasted bill or the like passes is amplified, the optical paths of the sensors 18 and 19 are blocked, and a signal is transmitted.

These detection levers 12 and 13 have tip portions 12A and 1
In order to facilitate the adjustment of the position of 3A, it is composed of two members 12B, 12C, 13B and 13C, respectively, and the connecting portions of these members are two pins 12D, 12E and 13C.
One of the pins 12E and 13E, which are connected by D and 13E, are screw shafts, and one of the members 12C and 1E through which the pins are inserted.
The holes on the 3C side are long holes 12F and 13F. Therefore, by loosening the pins 12E and 13E and adjusting the angle between the members, the tip portions 12A and 13A and the sensor 1 can be adjusted.
The positional relationship with 8, 19 can be adjusted.

The reference conveying roller 3 has a structure in which a plurality of roller portions 3B, 3B ... And peripheral grooves 3C, 3C. There is.

Incidentally, in the illustrated embodiment, four pulleys 20, 20, ... For carrying operation are provided on the shaft of the roller 3, and the belts 21, 21 wound around these pulleys 20, 20.
The outer peripheral surface of this portion has a diameter slightly larger than the outer diameter of the roller portion 3B.

The thickness detecting roller 5 for detecting an unfit note has a roller portion 5B facing the roller portion 3B of the reference carrying roller 3 and having substantially the same width as the roller portion 3B, and a circumferential groove 5C also facing the circumferential groove 3C. . Furthermore, on the axis of the roller 5, the pulleys 20, 2
It has pulleys (not shown) corresponding to 0 ...

The thickness detecting roller 4 for detecting the overlapping of two sheets is a roller portion 4B.
And a circumferential groove 4C, and on the shaft of the roller 4, there are pulleys 22, 22, ... Corresponding to the pulleys 20, 20, ... On the shaft of the reference conveying roller 3 as seen in FIG. However, the roller portions 4B are provided only on both sides of the pulleys 22, 22 ...

Pulleys 20, 20, ... On the shaft of the reference conveyance roller 3
, And the belts 21, 21 ... Which are spaced apart from the pulleys 24, 24, ...
And the pulley 2 on the shaft of the thickness detection roller 4
The belts 26, 26 ... Are wound around the pulleys 25, 25 ... from the belts 22, 22 ... through pulleys (not shown) on the shaft of the other roller 5 for thickness detection, and between the mating surfaces of these belts 21, 26. It is designed to carry out banknotes. By the winding of the belt 26, both the thickness detecting rollers 4 and 5 are brought closer to the reference conveying roller 3 side, and the detecting lever 1
The fixed side rings 10C, 10C of the thickness detecting rollers 4, 5 are pressed against the outer peripheral surface 7D of the eccentric case of the reference conveying roller 3 in cooperation with the force of the urging springs 16, 17 of Nos. 2, 13.

In this pressure contact state, as shown in FIG. 3, the axial distance between the axial center position of the thickness detecting rollers 4 and 5 and the axial center position of the reference conveying roller 3 is determined by the rotational position of the eccentric case 7C,
As a result, the gap size of each roller portion 3B, 4B, 5B is determined. For example, if the banknote thickness is 0.1 m / m,
The gap between the roller portions 3B, 4B and 3B, 5B is 0.1.
It is set to 2m / m. Since the entry of the banknote between the belts 21 and 26 deforms the belts 21 and 26 by the thickness of the banknote, it does not affect the gap between the roller portions 3B, 4B and 3B, 5B, and the roller gap has an excessive thickness. The roller gap is expanded only when a bill enters.

Therefore, in order to adjust each roller gap according to the thickness of the bill to be processed, the bolt 9 is loosened and the piece 8 is moved upward or downward in the figure so that the eccentric case 7C moves the axis of the reference conveying roller 3 to the center. It rotates about its center, and the thickness detecting rollers 4 and 5 follow it accordingly to adjust the roller gap L between the reference conveying roller 3 and the thickness detecting rollers 4 and 5.

In FIG. 1, 27 and 27 denote feeding rollers for feeding the bill P to the thickness detecting device.

Next, the thickness detection operation will be described.

In FIG. 1, the bill P fed by the feed rollers 27, 27 is fed between the reference conveyance roller 3 and the thickness detection roller 4. The banknote P sent in is a normal banknote (only one banknote without tape sticking or corner folding).
If so, it passes between the reference carrying roller 3 and the thickness detecting roller 4, and is discharged between the belts 21 and 26.

When the banknotes P are two sheets, each roller unit 3
Since the entire thickness detecting roller 4 is pushed up by the bill between B and 4B, the actuating levers 12 and 12 engaged with both ends of the roller 4 are pushed up by the same amount, and the tip end portions 12A and 12A of the actuating levers 12 and 12, 12A is a sensor 18, 18
The optical signal of each of the sensors 18 and 18 is cut off, and as a result, the switching signal from each of the sensors 18 and 18 is input to the control circuit. Are collected in a reject box or the like.

When the banknote P has a corner fold or a tape sticking portion, if there is a corner fold or tape sticking in a portion of the thickness detecting roller 4 where the roller portion 4B is not present, the bill P passes through like the normal bill, but with the reference carrying roller 3. When passing between the roller 5 and the thickness detecting roller 5, one of the roller portions 5B in the axial direction of the roller 5 is moved away from the roller portion 3B due to corner folding of a bill or tape attachment.
Thickness detection roller 5 on the side where the corner is bent or tape is attached
Since only the end portion of the sensor is pushed up, only the actuating lever 13 on the pushed up side is activated, only the sensor 19 on one side is activated, and the switching signal from one sensor 19 is input to the control circuit to control it. From the circuit, a signal indicating a broken bill that has been bent or taped is transmitted and sent to a transporting path for collecting the bill in a proper bill collecting section.

In the illustrated embodiment, the case where the thickness detecting rollers 4 and 5 are two for detecting the two-ply stack and for detecting the unfit note is described in order to improve the detection accuracy. The thickness detecting roller 4 has the same mechanism as the reference conveying roller 3, and when both the sensors 18 and 18 are switched, two sheets are stacked, and when one of the sensors 18 is switched, it is detected as an unfit note, and two sheets are thus detected. Obviously, it is possible to detect the overlap and the unfit note, and the case where the optical sensors 18 and 19 are used as the detectors has been described.
This may have another switch structure, and the configuration of each part is not limited to the illustrated embodiment.

[Effect of device]

As described above, according to the present invention, since the detectors for detecting the respective movements of the thickness detecting roller at both axial end portions with respect to the reference conveying roller are provided, the detection signals of both detectors can be processed differently. Can be an apparatus for detecting unfit banknotes such as bent corners or tapes, or for detecting both unfit banknotes and double-stacked banknotes as rejected banknotes, and in particular, partially different thickness sheets Since it is possible to detect the passage of the same kind, it is possible to easily check not only two sheets but also defective sheets such as broken banknotes such as bent corners and tapes. Further, since the gap adjustment of the thickness detecting roller with respect to the reference carrying roller is adjusted by rotating the eccentric case of the shaft end of the reference carrying roller, the gap adjustment can be easily performed steplessly and finely. . As in the illustrated embodiment, if two rollers for detecting the thickness are provided for checking the two sheets and for the unfit sheet, it is possible to enhance the detection accuracy of the two-ply sheet and the damaged sheet. Both can be separated and collected.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the paper sheet thickness detecting device according to the present invention, FIG. 2 is a right front view of FIG. 1, and FIG.
FIG. 4 is an enlarged detailed view of a main part of the drawing, and FIG. 4 is a sectional view taken along line IV-IV in FIG. 1 ... Side plate, 2 ... Guide plate, 3 ... Reference carrying roller, 4,
5 ... Thickness detecting roller, 7 ... Adjusting bearing, 7C ... Eccentric case, 10C ... Fixed side ring, 11 ... Guide groove, 12, 1
3 ... Detection lever, 18, 19 ... Sensor, 21, 26 ... Belt.

Claims (1)

[Scope of utility model registration request] 1. A reference carrying roller provided in a fixed position facing a carrying path, and movable in a retreat direction when a paper sheet having an excessive thickness with respect to the reference carrying roller is passed through the roller. In a thickness detecting device having a thickness detecting roller and a detecting means for detecting the moving amount of the thickness detecting roller, a plurality of reference carrying rollers are provided at intervals in the axial direction of the reference carrying roller shaft. The roller and the peripheral groove are arranged alternately, and the thickness detecting roller is provided on the thickness detecting roller shaft so as to correspond to the reference conveying roller, and the reference conveying roller is provided. At least one roller portion that faces the roller portion of the roller and has substantially the same width as that of the roller portion, is provided at each end of the reference transport roller, and has an outer peripheral surface that is eccentric from its axis. Time when adjusting And an eccentric case which is positioned in a fixed state after adjustment and a fixing ring of a bearing which is provided at both ends of the thickness detecting roller and is pressed against the outer circumference of the eccentric case by a biasing force and can be separated from each other. A guide plate formed with a guide groove that regulates the moving direction when adjusting the ring and detecting the thickness, each detector that detects the moving amount of each fixed ring, and the movement of the fixed ring that contacts the fixed ring. A paper sheet thickness detection device comprising: each detection lever for increasing the amount by a swing lever ratio to operate the detector.