JPH0795348B2 - Conveyance control method for paper sheet identification machine - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a method for controlling conveyance of paper sheets in a paper sheet identification machine for bills, beer tickets, etc., and particularly, conveyance control for allowing paper sheets held in a temporary holding unit to be stored in a storage unit without jamming. Regarding the method. In the drawings below, the same reference numerals indicate the same or corresponding parts.

[Prior art]

FIG. 3 is a block diagram showing a configuration example of a bill validator as a paper validator of the present invention and a conventional bill validator. In the figure
01 is an object to be detected such as banknotes, and IL is an input port. Reference numeral 11 denotes a transport mechanism for the object to be detected 01, which includes a transport belt, a pulley that drives this belt, and the like. Reference numeral 02 is an identification unit as a sensor for identifying the authenticity of the detected object 01, and 03 is a control unit for controlling the entire bill validator. TG is a tacho-generator that works in conjunction with a pulley or drive motor (not shown) of the transport mechanism 11,
The tachogenerator outputs a predetermined number of pulses for each predetermined transfer movement amount of the transfer mechanism 11 (in this example, 39 pulses for each 10 mm movement amount of the detection object 01). 05 is a waveform shaping part that shapes the output pulse waveform of the tacho generator TG into a rectangular wave pulse, and 07 (07A, 07B) is OFF when it detects the passage of the rear end (end in the X1 direction) of the detected part 01. Is a position detection sensor that detects that the detected object 01 has been conveyed to the temporary holding section 09. 09 is a temporary holding part as a place to temporarily hold the detected object 01 identified as true, and 08 is a detected part held in the temporary holding part 09
A storage unit as a place for storing 01 based on a storage instruction given from the outside, 10 (10A, 10B) is a return mechanism for returning the stored or held object 01 to be detected based on a return instruction given from the outside. is there. Reference numeral 12 denotes a pull-out prevention lever that prevents the detected object 01 held in the temporary holding section 09 from being pulled out from the insertion port IL side. The lever 12 moves the detected object 01 in the temporary holding section 09 direction (X direction). When transported, it does not hinder the transport of the detected object 01 by moving easily, but the detected object 01 is transferred from the temporary holding section 09 to the insertion port IL.
Direction or the object to be detected when pulling out in the direction (X1 direction)
It is caught at the rear end of 01 to prevent its movement and to prevent it from being pulled out. Reference numeral 06 denotes a lever operation detection sensor for detecting the operation of the pullout prevention lever 12. When returning fishing bills from the temporary holding section 09 or the storage section 08, the control section
03 operates the pullout prevention lever 12 to free the transportation path of the object to be detected 01 (banknote), and then returns the object 01 via the return mechanism 10. Next, the general operation of FIG. 3 will be described. Object to be detected at the inlet IL
When 01 is turned on, the control unit 03 transfers the detected object 01 to the transport mechanism.
While being conveyed in the X direction via 11, the authenticity of the detected object 01 is identified via the identifying unit 02. If you identify false here,
The control unit 03 returns the detected object 01 to the side of the input port IL (X1 direction), but when it is determined to be true, the detected object 01 is continuously conveyed in the X direction and is conveyed to the temporary holding unit 09. . Object 01
When the object reaches the temporary holding section 09, the control section 03 detects the passage of the rear end of the detected object 01 through the position detection sensor 07 and detects the detected object 01.
Stop and suspend here. Next, when a storage command (collection command) is received from the main control unit of the vending machine (not shown) or the like, the control unit 03 stores the temporarily held object 01 to be detected in the storage unit 08. On the other hand, when the return command is received from the main control unit, the control unit 03 operates the pullout prevention lever as described above to return the temporarily detected object 01 to the return mechanism 10
It will be returned to the input port IL via.

[Problems to be Solved by the Invention]

As described above, in the conventional bill validator, the temporary holding unit
The detected object 01 conveyed to 09 is stopped when the position detection sensor 07 (07A, 07B) of the temporary holding section 09 is turned off (passage detection). FIG. 4 is a diagram for explaining the variation in the position of the detected object 01 at the time of this stop, and the same figure is a plan view of the detected object 01 in the temporary holding section 09 seen from above in FIG. In this case, in order to avoid interference with the position of the return mechanism 10A, the position detection sensor 07 cannot be provided in the central portion of the transport path of the object to be detected 01 and is provided at the end portion in the transport path. Here, when the trailing edge BE is the normal detection object 01 (01A), it is correctly stopped in the temporary holding section 09 as shown in FIG. 4 (a). However, in the case of the detected object 01 (01B) having an abnormality in the rear end BE (for example, the corner is broken or broken), the detected object is in front of the temporary holding section 09 as shown in FIG. 4B. Behind BE
Stops. After that, when receiving the receipt command from the main control unit of the vending machine, the control unit 03 conveys the detected object 01 from the stop position of the temporary holding unit 09 to the storage unit 08 side for a certain distance, and then to the storage unit 08. Store. FIG. 5 is a view showing a state in which the detected object 01 is stored in the storage portion 08, and corresponds to a sectional view in which a part of FIG. 3 is enlarged. As shown in FIG. 5, the normal detection object 01A is stored in the storage unit 0.
Object 01B that is normally stored in 8 but has an abnormal rear end
Had a problem that it was stored in the storage section 08 with the rear end BE left in the temporary storage section 09, and when the next detected object 01 was received, it was clogged. To prevent this problem, for example, the temporary holding unit
A method of arranging multiple position detection sensors in a line along the trailing edge of the detected object at the stop position of the detected object in 09 can be considered, but this method is not realized due to mechanical restrictions or cost increase. It was difficult. Therefore, in addition to the detection signal of the position detection sensor 07 of the temporary holding unit, the present invention detects that the rear end of the detected object 01 has reached a predetermined transport position before stopping at the temporary holding unit 09. The position detection sensor is a position detection sensor, and the detection position of the rear end in the direction orthogonal to the conveyance direction of the detected object is the position detection sensor.
Provided is a conveyance control method for a paper sheet discriminating machine that uses a detection signal of a position detection sensor (lever operation detection sensor 06 in this example) that is different from the detection position of 07 and a signal of a tacho generator TG together. By doing so, it is an object to solve the above problem.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the method of the present invention is
Paper sheets identified as true (via 02, etc.) (object 01, etc.)
Is conveyed to a temporary holding section (09, etc.) via a conveying means (conveying mechanism 11, etc.), stopped and held, and then the held paper sheets are stored (in a storing section 08, etc.) based on a storing or returning command. Or a paper sheet identification machine for returning (to the input port IL or the like), the first detection means for detecting the position of the rear end (BE or the like) of the paper sheet conveyed to the stop position of the temporary holding section. (Position detection sensor 07 and the like) and means for detecting the position of the trailing edge of the paper sheet that has been conveyed to a predetermined position on the way to the stop position, in the direction orthogonal to the paper sheet conveyance direction. Second detection means (lever detection sensor 06, etc.) such that the detection position of the rear end is different from the detection position of the rear end of the paper sheet detected by the first detection means; Conveyance distance detection means (tachoge) that detects the conveyance distance of paper sheets by Regulator TG, and the like control unit 03),
In the paper sheet discriminating apparatus including the above, after the detection by the second detection means, the paper sheet concerned is first detected from the second detection means via the conveyance means and the conveyance distance detection means. The transport distance TG to the means is equal to the constant pulse transport distance S), and when the detection by the first detection means is performed before the completion of the transport, the current transport position of the relevant paper sheet is determined as When the detection is not performed, on the other hand, the position where the paper sheet is conveyed via the conveyance means is regarded as the stop position of the temporary storage unit. Should be regarded as
It shall be.

[Action]

Since the distance in the transport direction between the position detection sensor (second detection unit) on the insertion opening side of the temporary holding unit and the position detection sensor (first detection unit) of the temporary holding unit is known, the second detection is performed. At the same time when the means is turned off (passage detection), counting of a tacho generator (conveyance distance detection means) that detects the amount of movement of the paper sheet is started, and the tacho generator counts the first value.
Is conveyed to the position of the detection means, where the first detection means
If it is not OFF, the conveyance is further continued, the OFF of the first detection means is detected, the conveyance is stopped, and the correct stop position is secured.

【Example】

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an explanatory view of the principle of the present invention and is a plan view similar to FIG. FIG. 2 is a flow chart showing the operation of the control unit 03 of FIG. 3 in the present invention. In the present invention, the detection signal of the lever operation detection sensor 06 is used in order to correctly convey the detection object 01 to the temporary holding section 09 even if the rear end BE is bent. That is, the lever motion detection sensor 06 is ON when the detected object 01 is passing under the pullout prevention lever 12 in the X direction, but is OFF when this passage is completed (that is, when the rear end BE is passed). Is configured to. Next, the operation of FIGS. 1 and 3 will be described with reference to FIG. The object to be detected 01 determined to be true by the identifying unit 02 as described above is conveyed to the temporary holding unit 09. At this time, when the control unit 03 turns off the lever operation detection sensor 06, that is, detects that the rear end BE of the detected object 01 has passed below the pullout prevention lever 12 (step 101), the output pulse of the tachogenerator TG Counting is started (step 102). Then, a tacho generator corresponding to the distance from the pull-out prevention lever 12 to the position detection sensor 07 as a known transport distance.
The object to be detected 01 is conveyed until the counting of the number of TG pulses (217 pulses in this case) is finished (step 103), and at the next step 104, the position detection sensor 07 is turned off (that is, the object to be detected 01 is detected). It is determined whether the rear end BE has passed). Here, if the sensor 07 is OFF (branch Y), the conveyance is immediately stopped (step 105), but if the sensor 07 is not OFF (branch N), the object to be detected 01 until the sensor 07 is OFF. After continuing the transportation of, the transportation is stopped. In this way, if one of the detection position of the pull-out prevention lever 12 or the detection position of the position detection sensor 07 is normal among the positions of the rear end BE of the detection object 01, the detection object 01 is correctly placed in the temporary holding section. It will be transported to the stop position of 09. This principle is shown in FIG. In the figure, S is the extraction lever
At a distance from 12 to the position detection sensor 07, the object 01 to be detected has detected the passage of the rear end BE by the lever operation detection sensor 06, and at least this distance S is the predetermined pulse of the tacho generator TG (217 pulses in this case). ) Transport by counting minutes. Therefore, according to the present invention, the detected object 01 having an abnormality in the rear BE
However, it can be stopped at the same temporary holding position as that of the normal detected object. In addition, there is no bending at the rear end, and a part near the rear end of the object to be detected is thin like the blind man mark on the banknote, so that the light emission of the position detection sensor 07 can be mistaken for the rear end by passing through this thin part. It can be stopped correctly in any case.

【The invention's effect】

According to the present invention, after the detection by the lever detection sensor 06, the conveyance distance S from the pull-out prevention lever 12 to the position detection sensor 07 for the object 01 to be detected is conveyed through the conveyance mechanism 11 and the tacho-generator TG.
The position detection sensor 07
When the detection is performed, the current transport position of the detected object 01 is regarded as the stop position of the temporary holding unit 09, while when the detection is not performed, the detected position is detected until the detection is further performed. Since the position where the object 01 is conveyed via the conveyance mechanism 11 is regarded as the stop position of the temporary holding unit 09, a stable stop position of the detected object 01 (banknote) in the temporary holding unit 09 can be secured, so It is possible to prevent the trouble that the next banknote cannot be accepted due to the defective storage of the banknote having an abnormal edge.

[Brief description of drawings]

FIG. 1 is a diagram for explaining the principle of the present invention, FIG. 2 is a flow chart showing the control operation of the present invention, FIG. 3 is a block diagram showing a configuration example of the present invention and a conventional bill validator, and FIG. FIG. 5 is an explanatory diagram of the variation of the bill stop position in the storage section, and FIG. 5 is an explanatory diagram of the variation of the bill storage state in the storage section. IL: Input port, 01 (01A, 01B): Detected object, 02: Identification part, 03:
Control unit, TG: Tacho-generator, 05: Waveform shaping unit, 06: Lever operation detection sensor, 07: (07A, 07B): Position detection sensor, 08: Storage unit, 09: Temporary holding unit, 10 (10A, 10B) : Return mechanism, 11: Transport mechanism, 12: Pull-out prevention lever, X, X1: Transport direction, BE: Rear end, S: TG constant pulse transport distance.

Claims (1)

[Claims] 1. A paper sheet for storing or returning the held paper sheet based on a storing or returning instruction after the paper sheet identified as true is conveyed to a temporary holding section via a conveying means, stopped and held. A classifier, the first detecting means for detecting the position of the trailing edge of the paper sheet conveyed to the stop position of the temporary holding section, and the sheet is conveyed to a predetermined position on the way to the stop position. A means for detecting the position of the trailing edge of the paper sheet, wherein the detection position of the trailing edge in the direction orthogonal to the conveying direction of the paper sheet is detected by the first detecting means. In the paper sheet discriminating machine, the second paper sheet discriminating machine is provided with: a second detecting device which is different from the detecting position; and a transporting distance detecting device which detects a transporting distance of the paper sheet by the transporting device. After the detection by the detection means, the conveyance means and the conveyance distance detection means are The paper sheet is conveyed by a conveying distance from the second detecting means to the first detecting means through the sheet, and when the detection by the first detecting means is performed before the conveyance is finished, the paper sheet concerned is conveyed. The current transportation position of the leaf is regarded as the stop position of the temporary holding unit, and when the detection is not performed, the paper sheet is transported via the transportation unit until the detection is further performed. A transport control method for a paper sheet discriminating apparatus, wherein the position is regarded as a stop position of the temporary holding unit.