JPS6146876B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Application of the Invention The present invention relates to a paper sheet conveying device for conveying paper sheets such as slips and banknotes in order to identify them.

Generally speaking, an identification device that separates paper sheets such as slips, postcards, banknotes, and securities, and determines the authenticity of the paper sheets, is a detection device installed in the middle of the conveyance path that feeds the paper sheets onto a conveyance path. It is identified by reading the pattern.

(2) Prior art For example, as shown in Fig. 1, roller 1,
Conveyor belts 2 and 2', which are stretched across paper sheet 1' and run in the same direction, convey paper sheets 3 while sandwiching them therebetween. These conveyor belts 2, 2' avoid the part to be read of the paper sheet 3, and if the part to be read is located in the center of the paper sheet 3, for example, they pinch both ends thereof as shown in FIG. Further, the detection device 4 is installed in the center between the conveyor belts 2 and 2'. Note that the length in the direction perpendicular to the conveyance of the sheet is, of course, greater than the distance between the conveyor belts 2 and 2'.

However, if the sheet of paper 3 is soft and stiff, such as a slip, or has folds or wrinkles, such as a banknote, the part to be read of the sheet of paper 3 is not clamped, so Easy to shake, detection device 4
must be installed while being separated from the paper sheet 3. Therefore, in order to avoid misjudgment or unreadability caused by this, conventionally, as shown in Fig. 2, the detection device 4
A guide plate 5 is provided near the sheet 3, which holds the sheet 3 from both sides and suppresses the above-mentioned vibrations, thereby narrowing the distance between the detecting device 4 and the sheet 3 and ensuring reliable reading. It was stabilized.

However, since this guide board 5 is stationary,
It rubs against the paper sheet 3 being conveyed, and the paper sheet 3 receives a resistance force proportional to the conveyance speed from the guide plate 5. This resistance particularly becomes a hindrance when the paper sheet 3 is conveyed at high speed, and in some cases, the paper sheet 3 may become tilted and become unreadable, or may become jammed and cannot be conveyed.

(3) Purpose of the Invention The present invention has been made to eliminate the above-mentioned drawbacks, and provides a paper sheet to be identified that can be detected reliably and stably by smoothing out folds and wrinkles without causing paper jams. The purpose of this invention is to provide a conveying device of the same type.

(4) General explanation of the invention When paper sheets are rolled up, they become stiffer and the folds and wrinkles are smoothed out. Therefore, a guide (for example, roller 1,
1') and the detection device 4 is provided at a distance shorter than the length of the paper conveyance in the conveyance direction from this guide, the conveyed paper sheets 3 will be bent and stiffened. , folds and wrinkles can be smoothed out to prevent wobbling.

As a result, the detection device 4 can read the paper sheet 3 accurately and stably.

(5) Examples Hereinafter, the present invention will be explained in detail with reference to examples.

FIG. 3 shows an embodiment of the present invention, in which the paper sheet 3 has a fold in the conveying direction, for example, in an apparatus for determining authenticity of banknotes. In Figure 3, 2, 2'
is a conveyor belt that runs while holding the paper sheet 3 therebetween.
Further, the tension rollers 6 and 6' are arranged at an interval shorter than the length in the direction perpendicular to the conveyance of the paper sheet 3, and rotate in the same direction and at approximately the same speed as the conveyance belts 2 and 2'. are placed so that they face slightly outward from each other.

In this way, the tension rollers 6, 6' are able to hold the sheet 3 fed out onto the conveyance path by the feeding device (not shown).
can be pulled against each other at right angles to the conveyance direction to smooth out folds and wrinkles in the paper sheet 3. Now, assuming that the length of the paper sheet 3 in the conveying direction is l, the rollers 1 and 1', over which the conveyor belts 2 and 2' are stretched, are attached at a distance shorter than l from the tension rollers 6 and 6'. Further, the mounting positions of the rollers 1 and 1' are slightly shifted from each other from the conveyance direction as shown in the figure, and the conveyor belts 2 and 2' are pressed and bent against each other.

In this way, as shown in FIG. 4, the sheet 3 is bent along the bent conveyor belts 2, 2' while being stretched by the tension rollers 6, 6'. At this time, the conveyor belts 2, 2' are pressed against the rollers 1, 1', and the paper sheet 3
Since the clamping force against the paper sheet 3 is increased, the paper sheet 3 can be maintained in its stretched state.

In this stretched state, the paper sheet 3 is placed between the rollers 6 and
It is held until it passes through 6'. Therefore, if the detection device 4 is installed at a position shorter than the length l of the paper sheet 3 from the rollers 6, 6', the paper sheet 3 will not swing up and down, and the reading by the detection device 4 will be reliable and stable. become

Further, the next rollers 7, 7' are placed at a position shorter than the length l of the sheet 3 from these rollers 6, 6', so that the conveyor belts 2, 2' are pushed and bent together as shown in the figure. Install. In this way, the paper sheet 3 will always have a bend in some part, so it can be maintained in a stretched state, so that, for example, even when the paper sheet 3 is later sorted by a gate (not shown), the paper sheet 3 will not be sorted. The operation can be performed easily.

FIG. 5 shows another embodiment of the present invention, in which a sheet of paper 3
An example will be shown in which the length in the direction perpendicular to the conveyance of the sheet 3 is detected and the paper sheets 3 are sorted according to the detection result. The paper sheets 3 inserted into the input box 8 are sequentially delivered to a conveyance path by a delivery device 9. The rollers 10 are attached so as to press and bend the conveyor belts 2, 2' at a distance shorter than the length l of the sheet 3 from the rollers 1, 1'. In the portion where the conveyor belts 2, 2' are bent, the sheet 3 being conveyed is bent and stretched along the conveyor belts 2, 2'. Therefore, a detection device 4 for detecting the length of the paper sheet 3 in a direction perpendicular to the conveyance of the paper sheet 3 is attached to this portion in the vicinity where both ends of the paper sheet 3 pass.

Although only one side of the detection device 4 is shown enlarged in FIG. 6, for example, a plurality of light receiving elements 4a, 4
b, ..., then by counting the number of sheets of paper 3 that are shimmered by the light from the light source 4', the length of the paper sheet 3 in the direction perpendicular to its conveyance can be detected. can. Based on this count, the gate 12 can be controlled to distribute the paper sheets 3, for example, so that if the number exceeds a certain setting, the paper sheets 3 are sent to the receiving box 11, and if not, the paper sheets 3 are sent to the receiving box 11'. (not shown).

In addition, as shown in FIG. 7, the feeding device 9 in FIG. 5 sucks and holds near both ends of the paper sheet 3 and when feeding it to the conveyance path, it also adds an action of pulling the paper sheet 3 from side to side. The sheets can be sequentially fed out onto the conveyance path with the folds and wrinkles of No. 3 stretched out.

FIG. 8 shows still another embodiment of the present invention,
Instead of the tension rollers 6 and 6' shown in FIG. 3, the distance between the conveyor belts 2 and 2', which run while holding the banknotes 3, is slightly widened in the conveying direction, so that the banknotes 3 can be moved left and right. An example of stretching and smoothing out folds and wrinkles is shown below. In this case, the pressing rollers 13 are installed to strongly clamp the banknotes 3 in order to prevent the banknotes 3 from shifting in a direction perpendicular to the conveyance due to the tension of the banknotes 3 by the conveyor belts 2 and 2'.

The rollers 7, 7' function to press and bend the conveyor belts 2, 2', and if the detection device 4 is installed at a distance shorter than the length l of the banknote 3 from the rollers 7, 7', the above embodiment can be achieved. A similar effect can be obtained.

(6) Summary In the above embodiments, the case where the target paper sheet is a banknote has been mainly explained, but the present invention is not limited to this, and other printed matter such as a slip or mail may be used. Furthermore, although the number of conveyor belts has been described as two sets, it may be one set or three sets depending on the portion of the sheet to be read.

As described above, in a conveying device that conveys paper sheets using a belt, the conveyor belts before and after the detection device are pressed and bent by rollers, and the paper sheets held by these belts are bent to strengthen the waist and prevent swinging. Since the detection device reads the information while suppressing the amount of noise, reliable and stable detection can be performed. Also, in the parts where the conveyor belt is bent,
Since the pressing force on the rollers is increased, that is, the gripping force of the conveyor belt against the sheet is increased, the sheet will not tilt during reading, and there is no risk of false detection.
Furthermore, since the sheet does not come into contact with the sheet and exert any resistance on it, it does not become jammed and cannot be conveyed, which is very effective. Furthermore, before the paper passes through the rollers, the paper is stretched by pulling it in a direction perpendicular to the conveyance direction, so that the paper passes smoothly through the rollers.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a conventional conveying device, Fig. 2 is a schematic side view of a conventional technique that solves the problem shown in Fig. 1, and Fig. 3 is an embodiment of the present invention, which is used in a banknote authenticity determination device. FIG. 4 is a schematic side view of FIG. 3, FIG. 5 is a schematic side view of another embodiment of the present invention applied to size distribution of paper sheets, and FIG. 6 is a schematic side view of FIG. Schematic top view of the detection device section of the embodiment, seventh
The figure is a schematic front view of the dispensing device section of the fifth illustrated embodiment, and FIG. 8 is a schematic diagram showing still another embodiment of the present invention, which is applied to a banknote authenticity determination device.

Claims (1)

[Scope of Claims] 1. In a paper sheet conveying device in which paper sheets are conveyed between belts and passed through means for detecting the characteristics of the paper sheets, the belt is conveyed in a direction that bends the paper sheets. A plurality of guides that change direction, and a feature of paper sheets that are placed apart from a first guide among the plurality of guides by a distance shorter than the length of the paper sheets in the transport direction. 1. A paper sheet conveyance device comprising: means for detecting. 2. The plurality of guides include a second guide located apart from the first guide by a distance shorter than the length of the paper sheet in the transport direction,
2. The paper sheet conveyance device according to claim 1, wherein the detection means is installed between the first and second guides. 3. A third guide is further provided between the first and second guides to change the conveying direction of the belt in the direction of bending the paper sheet, and the detection means is located between the third guide.
3. The paper sheet conveying device according to claim 2, wherein the sheet conveying device is installed at a guide position. 4. The paper sheet conveyance device according to claim 1, wherein the conveyance direction of the paper sheet is the lateral direction of the paper sheet. 5. In a paper sheet conveying device in which paper sheets are conveyed between belts and passed through a means for detecting the characteristics of the paper sheets, belts that act in opposite directions perpendicular to the conveyance direction of the paper sheets The first one gives a stretching force like
a guide that is installed apart from the first means in the conveyance direction and changes the conveyance direction of the belt in a direction that bends paper sheets; and from the first means;
A paper sheet conveying device comprising: second means for detecting characteristics of paper sheets placed in the conveying direction at a distance shorter than the length of the paper sheets in the conveying direction. 6. Claim 5, wherein the first means is a pair of rollers installed on the paper sheet at an angle perpendicular to the conveying direction of the paper sheet. 2. Paper sheet conveyance device.