JP2513627B2 - Paper processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention relates to a paper sheet processing apparatus such as a banknote counter for sorting and stacking banknotes.

(Prior Art) Conventionally, in a sheet processing apparatus such as a banknote counter, in order to perform processing such as sorting and stacking of sheets, the characteristics of the conveyed sheets are detected, and the detection result is Based on this, the discriminating unit discriminates and the discrimination result is output to the control unit.

By the way, in a bill processing apparatus such as a bill counting machine, there are roughly classified into a normal bill discrimination such as shape, bill type, front / back, forward / reverse, and true / false, and a normal discrimination. Among these, particularly when performing a damage determination, it is necessary to eliminate a pasted ticket such as a tape. Therefore, as compared with the case where a normal bill determination is performed, the thickness that constitutes a part of the bill determination unit It is necessary to set the detection determination level in the direction thinner than the two sheet thickness determination level. This is because, in the ordinary bill discrimination, the main purpose is to detect the thickness of one bill by the thickness detection. Therefore, the determination level of the thickness detection is the level I for detecting the overlap of one or more bills. Although there is no problem, in the judgment of correctness, not only the detection of one banknote but also the detection of a tape thinner than the banknote pasted on the banknote by the thickness detection is the main purpose. Therefore, the determination level for thickness detection is Level II, which detects thin tapes and the like pasted on banknotes.
Because it must be.

Therefore, in the conventional banknote handling apparatus, the thickness detection determination level is fixedly set to the level I or II depending on whether or not the apparatus is to perform the damage determination. Of course, Level I is Level II
Since the judgment level is weaker than that of No. 1, when the same bill is processed, the rejection rate (rejection rate) of Level I is lower than that of Level II, considering only the determination result of the thickness detection.

In recent years, a small-sized bill processing device, such as a bill sorting machine, has been developed that has a bill determination function added to a conventional bill counting machine.
It has been put to practical use. In such a banknote processing apparatus, a normal mode of banknote discrimination, such as "counting division", "front / back division", "denomination classification", and the like, and "correct note division" for judging whether the bill is correct or not, There is a classification mode B such as "defect classification".

In the sorting mode A, it is not necessary to determine whether the bill is normal or not, but since it is necessary to detect the double bill picking, the determination level for the thickness detection is set to the level I. Since it is necessary to determine the loss, the determination level for thickness detection is set to the level II.

However, in processing a large number of banknotes, a large rate of rejected banknotes that cannot be processed leads to a decrease in banknote processing speed. For example, classification mode A
In the case of the above operation, as described above, it is not necessary to determine the fitness, but it is necessary to perform the two-sheet picking detection. In this case, when the determination level of the thickness detection is level I, but if the level II is erroneously set, the rigict rate becomes large as compared with the case where the thickness is detected at the level I, and the bill There is a drawback that the processing speed is greatly reduced.

(Problems to be Solved by the Invention) As described above, since only one determination level for thickness detection is fixedly set, the thickness detection is performed at the determination level suitable for the sorting mode of the sheet processing apparatus. However, there is a drawback that many unnecessary rejects occur and efficient operation of the paper sheet processing apparatus cannot be achieved.

Therefore, the present invention eliminates the above-mentioned drawbacks, and an object of the present invention is to provide a paper sheet processing apparatus capable of eliminating unnecessary rejects of paper sheets and achieving efficient operation. [Structure of the Invention] (Means for Solving the Problems) The paper sheet processing apparatus of the present invention sets a plurality of determination levels for detecting the thickness of paper sheets, and sets them according to the paper sheet classification mode. The judgment level is selectively switched.

(Function) By switching the determination level of the sheet thickness detection according to the sorting mode, it is possible to perform the thickness detection at the determination level most suitable for the sorting mode of the sheet, so that the sheet is unnecessary. It is possible to eliminate efficient rejects and achieve efficient operation.

(Example) Hereinafter, one example of the present invention will be described with reference to the drawings.

5 and 6 show a bill processing apparatus as a paper sheet processing apparatus according to the present invention. In FIG. 5, reference numeral 1 denotes a main body of the apparatus, and an operation panel 2 for designating a sorting mode on the upper right side of the main body 1 and for displaying contents processed based on the designated sorting mode. Is provided, and a bill taking-in section 3 is provided on the left side of the operation panel 2. The banknote loading unit 3 is configured to sequentially load the banknotes P to be processed stored therein one by one. At the front part of the main body 1, a bill taking section 3
1st, 2nd, 3rd which collects the banknotes taken in from and processed
The accumulating units 4, 5 and 6 are arranged in order from above. In addition,
The banknotes stacked in the first, second and third stacking units 4, 5 and 6 can be taken out from the front of the main body 1.

In FIG. 6, the banknote take-in section 3 is provided with a backup plate 7 that presses the set banknotes P toward the take-in side, and while the banknotes P are being pressed by the backup plate 7, the banknotes P are sequentially taken one by one. Get caught. Then, a transport path 8 for transporting the taken bills to the first, second, and third stacking units 4, 5, and 6 is provided. Although the conveyance path 8 is shown as a conveyance path for bills, it has a structure in which bills are conveyed while being held by a conveyance belt (not shown), for example. A detection unit 9 that optically or mechanically detects the characteristics of the banknotes being conveyed is provided in the middle of the conveying path 8. Detector 9
Is composed of, for example, a photoelectric conversion unit 91 that irradiates a bill with light and converts the reflected light and the transmitted light into an electric signal, and a thickness detection unit 92 that mechanically detects the thickness of the bill. Transport path 8
The banknotes that have passed the detection unit 9 are placed at the end of the third stacking unit 6
The first direction or the direction of the second and first stacking units 5 and 4
The gate 10 and the second banknote that has passed through the first gate 10 are switched to the second stacking unit 5 or the first stacking unit 4.
A gate 11 is provided.

The bill take-in section 3 is provided with a detector 12 for detecting whether or not the bill P is set, and the bill is taken in order to count the number of bills taken in from the bill take-in section 3. A detector 13 for detecting passage is provided. In front of the first stacking unit 4, a detector for detecting passage of banknotes in order to count the number of banknotes conveyed to the first stacking unit 4.
14 is provided, and a detector 15 that detects whether or not banknotes are accumulated in the first accumulation unit 4 is provided. In front of the second stacking unit 5, there is provided a detector 16 for detecting passage of banknotes in order to count the number of banknotes conveyed to the second stacking unit 5, and the second stacking unit 5 A detector 17 for detecting whether or not banknotes are accumulated is provided. In front of the third stacking unit 6, there is provided a detector 18 for detecting the passage of banknotes in order to count the number of banknotes conveyed to the third stacking unit 6, and the third stacking unit 6 A detector 19 for detecting whether or not banknotes are accumulated is provided.

The banknote handling apparatus configured as described above sorts and stacks banknotes according to a sorting mode specified in advance, and as the sorting mode, for example, a counting sorting mode,
There are a front / back sorting mode, a fitness sorting mode, a straight bill sorting mode, and the like. Each of these modes is selectively designated by sorting mode designating means provided on the operation panel 2. Counting mode is a countable bill and a non-countable bill (rejected bill, counterfeit bill,
Countable banknotes are classified into the first and second
The second stacking units 4 and 5 sort and stack the uncountable banknotes, and the third stacking unit 6 sorts and stacks them. In the front / back sorting mode, countable bills and uncountable bills are sorted, countable bills are further sorted into front bills and back bills, front bills are sorted and stacked in the first stacking unit 4, and back bills are The second stacking unit 5 sorts and stacks the uncountable banknotes and the third stacking unit 6 sorts and stacks them. The damage classification mode is
Countable bills and uncountable bills are classified, and countable bills are further classified into genuine bills and unfit bills. Genuine bills are sorted and stacked in the first stacking unit 4, and unfit bills are stacked in the second stacking unit 5. The bills are sorted and collected, and the uncountable banknotes are sorted and collected in the third stacking unit 6. In the normal note sorting mode, countable bills and uncountable bills are sorted, and countable bills are further sorted into genuine bills and unfit bills, and the genuine bills are sorted and collected in the first and second stacking units 4 and 5. However, both the unfit banknotes and the uncountable banknotes are separately stacked in the third stacking unit 6 as rejected banknotes.

FIG. 2 shows in detail the thickness detecting section 92 which constitutes the detecting section 9. That is, reference numeral 21 is a reference roller, and a detector roller (pickup roller) 22 is rollingly contacted on the reference roller 21, and the paper money P is, for example, in the lateral direction between the rollers 21 and 22 by the transport path 8. Be transported. The detector roller 22 is rotatably attached to the tip (free end) of a pickup arm 23 whose one end is rotatably supported, so that the detector roller 22 is vertically moved according to the thickness of the banknote P being conveyed. It is designed to be displaced. A spring 24 is attached to the rotating shaft side of the arm 23, and the spring 24 presses the detector roller 22 against the reference roller 21 with a predetermined pressure. Also, on the rotation axis side of the arm 23, the arm
A converter 25 is provided which detects the displacement amount of the detector roller 22 as a rotation angle via 23 and converts it into a voltage signal. As a result, the detector roller 22 holds the banknote P conveyed together with the reference roller 21, but at this time, the detector roller 22 is displaced according to the thickness of the banknote P. The converter 25 detects the displacement amount of the detector roller 22 as the rotation angle of the arm 23 and converts it into a corresponding voltage signal. Therefore, the converter 25 outputs a voltage signal according to the thickness of the banknote P being conveyed, and an example thereof is shown in FIG. It should be noted that FIG. 3A shows the case of normal banknotes, and FIG. 3B shows the case of tape-bonded banknotes. In FIG. 3A, the tip of the banknote P being conveyed is the detector roller 22. The unstable portion, which is caused by the impact of the collision, and the portion B are the tape-attached portions.

FIG. 1 shows a main part of an electric circuit. That is, the photoelectric conversion unit 91 and the thickness detection unit that form the detection unit 9
Each output of 92 is supplied to the bill discriminating unit 31. The bill discriminating unit 31 discriminates the authenticity of the bill, the denomination, the front and back, and the damage based on the output of the photoelectric conversion unit 91, and the output of the thickness detecting unit 92 and the thickness set by the determination level setting unit 32. The thickness of the banknote is detected by the judgment level for detecting
Doubled banknotes or taped banknotes (thick banknotes)
Is determined, and the determination result is determined by the main control unit.
Send to 36. The judgment level setting unit 32 has, for example, three judgment levels I, II, and III as shown in FIG. 4, and these judgment levels I, II, and III are respectively adjusted variable resistors 3 for adjustment.
It can be adjusted independently by 3,34,35. Then, the determination level setting unit 32, according to the classification mode signal sent from the main control unit 36, each of these determination levels I,
Select the optimal judgment level from II and III, and
It is set to 31. Here, the judgment levels I and II are the ones that are thicker than the normal thickness of the target bill, the judgment level I is used to discriminate two overlapping banknotes, and the judgment level II is taped. It is used to distinguish bills. Further, the determination level III is a level that is thinner than the normal thickness of the target banknote, detects an abnormal operation of the thickness detection unit 92, and selects a banknote that is thinner than the normal thickness of the target banknote. It is used for discrimination, and is therefore selectively set in any classification mode.

The main control unit 36 controls the entire bill processing apparatus, and is mainly composed of, for example, a CPU (Central Processing Unit). And the main controller
36 includes an operation panel 2, detectors 12 to 19 and a mechanism control unit.
37 is connected. The mechanism control unit 37 includes a bill capturing unit 3,
1st, 2nd, 3rd stacking units 4, 5 and 6, transport path 8 and gates 10 and 11
And so on. Reference numeral 38 is a classification mode designating means provided in the operation panel 2.

Next, the operation in such a configuration will be described. When a desired partition mode is designated by the partition mode designating means 38 in the operation panel 2 and a processing operation start command is input, the partition accumulation operation according to the designated partition mode as described above is performed. On the other hand, when the sorting mode is designated, the main control unit 36 sends a signal of the designated sorting mode to the determination level setting unit 32. Then, the judgment level setting unit 32 selects and sets the optimum judgment level according to the classification mode signal. Therefore, the bill discriminating unit 31 detects the thickness according to the set discrimination level. For example, when the counting division mode (or front / back division mode) is designated, the determination level setting unit 32 causes the determination level I (and II).
Select I). That is, in the counting / sorting mode (or the front / back sorting mode), the bills may be sorted into countable bills and non-countable bills as described above. That is, in the thickness detection, it is sufficient to detect whether the thickness is one sheet or not, and the thickness is two sheets or more. Therefore, in this case, the determination level setting unit 32 selectively sets the determination level I. Banknote discrimination section
At 31, the output of the thickness detection unit 92 is compared with the determination level I,
As shown in FIG. 4 (b), if it is larger than the judgment level I, it is judged as a two-ply banknote (countable banknote).

Further, for example, when the fitness classification mode (or the bill classification mode) is designated, the determination level setting unit 32 selectively sets the determination levels I, II (and III). That is, in the correctness classification mode (or correct note classification mode), it is necessary to not only divide into countable bills and non-countable bills as described above, but also to divide into countable bills into proper bills and unfit bills. is there. That is, in the thickness detection, it is necessary to discriminate a damaged bill of a thickness (specifically, a tape-attached bill). Therefore, in this case, the decision level setting unit 32
Select I and II. In the bill discriminating unit 31, the thickness detecting unit 92
Output is compared with the judgment levels I and II, and if it is larger than the judgment level I as shown in FIG. 4 (b), it is discriminated as a two-ply banknote (countable banknote), and shown in FIG. 4 (c). Thus, if it is between the determination levels I and II, it is determined as a tape-attached banknote (unfit note).

In the correct note sorting mode, since the uncountable banknotes and the tape-bonded banknotes (unfit banknotes) are separately collected as the rejected banknotes in the third stacking unit 6 as described above, the judgment level I can be omitted and only the judgment level II can be obtained. May be set. in this case,
In the bill discriminating unit 31, the output of the thickness detecting unit 92 is the discrimination level II.
If it is larger than this, it is determined to be a rejected banknote (two banknotes or a tape-bonded banknote).

Note that FIG. 4 shows the relationship between the modeling of the output of the thickness detection unit 92 and the judgment levels I, II, and III. FIG. 4A shows a normal bill, and FIG. Banknotes and FIG. 7C show the case of tape-bonded banknotes, respectively.

In this way, by setting a plurality of determination levels for the thickness detection and selectively switching the determination levels corresponding to the sorting mode of the banknote processing device, the determination level optimal for the sorting mode of the banknote processing device is obtained. Thickness detection can be performed. Therefore, it is possible to eliminate unnecessary rejects of the bill processing device and achieve efficient operation.

In addition, although the said Example demonstrated the case where the thickness of a banknote was detected in a banknote processing apparatus, this invention is not limited to this, For example, securities other than banknotes, such as a check, other papers. The same can be applied to the case where the thickness of a paper sheet is detected in the leaf processing apparatus.

〔The invention's effect〕

As described in detail above, according to the present invention, it is possible to provide a paper sheet processing apparatus which can eliminate unnecessary rejects of paper sheets and can achieve efficient operation.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a block diagram showing an essential part of an electric circuit, FIG. 2 is a detailed configuration diagram of a thickness detecting section, and FIG. 3 is a thickness detecting section. FIG. 4 is a waveform diagram showing an example of the output signal of FIG. 4, FIG. 4 is a diagram showing the relationship between the modeling of the output of the thickness detection unit and the determination level, FIG. 5 is an external perspective view of the banknote processing apparatus, and FIG. FIG. P ... Banknotes (paper sheets), 2 ... Operation panel, 3 ... Banknote take-in section, 4,5,6 ... Stacking section, 8 ... Transport path, 9 ... Detection section, 92 ... Thickness Detection unit, 10, 11 ... Gate, 31 ... Banknote discrimination unit, 32 ... Judgment level setting unit, 36 ... Main control unit, 38
...... Segment mode designation means.

Claims (1)

(57) [Claims] 1. A paper sheet is conveyed sheet by sheet, a characteristic including at least the thickness of the conveyed paper sheet is detected, the type of the paper sheet is discriminated, and the paper sheet is discriminated based on the discrimination result. In a paper sheet processing apparatus having a first sorting mode for sorting a bill into a genuine bill and an unfit bill, and a second sorting mode for sorting into other types, a thickness of the transported paper sheet is detected. Then, the detection unit that outputs a detection signal according to the thickness of the paper sheet, and the set value for determining the output of the detection unit is the first value corresponding to the thickness of less than two sheets of the paper sheet. Level setting means for setting a level and a second level smaller than the first level and for detecting foreign matter adhering to the paper sheet; the first sorting mode and the second sorting mode And a mode selecting means for selecting, and the second sorting mode is selected by the mode selecting means. When selected, the thickness is determined using the first level set by the level setting means, and when the first sorting mode is selected by the mode selecting means, the thickness is set by the level setting means. And a discriminating means for discriminating the thickness using the second level, and a sheet processing apparatus.