JPH10181972A - Tape speed controller of tape type bill storage-delivery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure an accurate tape conveying speed by calculating a tape travel speed on the outer circumference of a winding drum from a pulse enumerated value corresponding to a revolving speed in the winding drum and the current drum diameter and the revolution being found out on the basis of tape and bill thickness, and driving and controlling it so as to set this speed at the setting speed. SOLUTION: Pulses being outputted from a rotary encoder 11 according to rotation of a motor 10 are counted by a reversible counter 32, the enumerated value conforming to each position of two tapes T1 and T2 is secured. At this time, a count value is set at zero making a position corresponding to each detection output of two tape end sensors O11 and P12 at a time when a wound quantity on a winding rum 7 has come to be just zero, as a reference. Count output of the reversible counter 32 is inputted into a central processing unit(CPU) 31, and the data are processed, finding a travel position, a travel distance or travel speed of the tape, and these data are used for driving and controlling the motor 10 or the like accompanying bill transactions. In this connection, the motor 10 drives a tape speed controller by the output of the central processing unit 31 via a motor drive circuit 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bill receiving and dispensing apparatus attached to a bill receiving / dispensing machine in a financial institution, a bill recognizing apparatus mounted on a vending machine or the like, and in particular, a bill is wound on a winding drum together with a tape. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape speed control device for controlling a tape conveying speed in a tape-type banknote storing and feeding device of a type in which a banknote is stored by winding and a banknote is fed by rewinding a tape on a winding drum.

[0002]

2. Description of the Related Art A tape-type banknote storage and feeding device of a type in which a banknote is stored by winding the banknote together with a tape on a winding drum, and the banknote is fed by rewinding the tape on the winding drum. There is an advantage that a large number of bills can be easily stored and fed out in a relatively small volume without providing a feeding means.

[0003] This type of tape-type banknote storage and delivery device includes:
For example, it is disclosed in JP-A-8-67382.
This type of bill storage and feeding device is typically of the two-tape type, which will be outlined with reference to FIG. 5 attached to this specification. Here, two tapes T1 and T2 are used, and are carried in between the winding drums 4a and 4b for separately winding only the tapes T1 and T2 (without a bill) and between the transport device 26 and the rollers 3a and 3b. A winding drum 7 for winding the bills P together with the tapes T1 and T2 in a state where the bills are sandwiched between the tapes T1 and T2, and a tape T1 between the winding drums 4a, 4b and 7; , T2, the banknotes are stored (payment) or fed (payout). The tapes T1 and T2 wound on the winding drum 7 are separated separately after passing between the rollers 3a and 3b, and guided to the winding drums 4a and 4b via idlers 9a and 9b, respectively.

The winding drums 4a and 4b are
a, 5b via a torque limiting torque limiter. Winding drum 4a, 4b and winding drum 7
Is provided with a motor 10 for applying a driving force in a predetermined direction. The two winding drums are interlocked with each other via a timing belt 13 so that the rotation in the rewind direction of the winding drum 7 is transmitted to the winding drums 4a and 4b at an increased speed. 16 (or
Gears with different numbers of teeth engaged with each other). The small-diameter pulleys 14a and 14b are attached to the shafts of the winding drums 4a and 4b via a one-way clutch that transmits rotation only in the winding direction, and the large-diameter gear 16 is formed integrally with the winding drum 7; Second one-way clutches 17a and 17b that allow rotation only in the winding direction are provided at the shaft ends of the shafts of the winding drums 4a and 4b. Pulley 1
The diameter ratio between the pulleys 4a and 14b and the pulley 16 is, for example, about 1: 3 to 1: 6. As a result, the winding drum 7 rewinds the tapes T1 and T2 at a speed V1 and the winding drum 4
The relationship between a and 4b and the speed V3 at which the tape is wound is always
V1 <V3 is set, but in actual operation, the tension limiting torque limiters 6a and 6b operate,
Approximately, V1 = V3.

Various tape sensors or banknote sensors are provided at various places to control the storage and feeding of the banknotes. Here, only the entrance / exit sensor PS1 provided at the entrance / exit of the banknote will be described, and the others will be omitted. I do.

[0006]

However, the conventional bill storing and feeding device outlined above has the following problems.

A) It is desirable to keep the rotational angular velocity of the winding drum 7 constant at all times because it is easy to control the speed. However, as the tape and the bill are wound on the winding drum 7, the diameter of the drum increases. Or, conversely, the diameter of the drum decreases as the banknote is rewound from the winding drum 7, so if the rotational angular velocity of the drum 7 is kept constant, the peripheral speed increases as the diameter of the drum increases,
As the drum diameter becomes smaller, the peripheral speed becomes slower, and the interval for storing bills becomes wider and narrower depending on the diameter of the drum. Furthermore, bills are pulled due to a speed difference at the seam between the tape transport unit and the transport unit up to that point, and on the contrary, if the speed is slow, looseness occurs, which is inconvenient in any case.

B) In a tape recorder or a video deck, a motor provided with a servo mechanism, a capstan and a pinch roller are used to keep the tape transport speed constant. However, while the tape transport speed of this type of audio / video (AV) device is at most about 380 mm / s, the bill processing device has a tape transport speed of 1000 mm / s.
Since the above high transport speed is required, it is difficult to apply a servo mechanism as used in AV equipment to a banknote processing apparatus. This is because if a servo mechanism for AV equipment is used in the tape transport system of the banknote handling machine, the tape may be damaged.

C) Generally, bills are transferred to the entrance / exit sensor PS1.
When the speed of the tapes T1 and T2 at this time is not equal to the speed of the passage on which the bills are conveyed, the bills may be jammed or damaged. Therefore, it is generally considered that the transport speed of the tape T2 is detected by a rotary encoder 25 having a detection roller driven by the tape T2 as shown in FIG. However, in the case of a sudden speed change such as a start of the tape, a slip occurs between the tape T2 and the detection roller of the rotary encoder 25, and a detection output occurs as if the speed of the tape T2 is lower than the actual speed. If the control circuit acts to increase the speed of the motor, the actual tape speed will increase more than necessary. When the tape speed becomes stable and slippage decreases, it is necessary to detect that the tape speed is higher than a predetermined value and control the motor speed to be reduced. As a result, the rotation speed of the motor is reduced in a short time, and the tape is loosened. Further, in order to prevent a delay in transport following the transport speed on the tape T2 that drives the rotary encoder 25,
It is conceivable to increase the pressure contact load between the tape T2 and the detection roller of the rotary encoder 25. However, considering that the tape is required to be made thinner using polyethylene terephthalate or the like, the abrasion speed is reduced. There is an inconvenience that the tape is apt to be cut quickly.

[0010] An object of the present invention is to store bills one by one at the time of deposit and pay them out one by one at the time of dispensing, in a short time, that is, the transport speed of the transport path to be connected and the storage or feeding of the tape. It is an object of the present invention to provide a tape speed control device of a tape-type banknote storage and feeding device capable of accurately obtaining a tape transport speed required for a tape transport time corresponding to a banknote interval at the time of storage.

[0011]

According to a first aspect of the present invention, there is provided a first winding drum for winding only a tape, and a tape and a bill interposed between the tape and the tape. A second take-up drum for winding together, and an external bill conveyance by causing the drive means to rewind the tape between the first take-up drum and the second take-up drum The bill fed from the means is wound around the second winding drum at a predetermined interval, and the tape is wound and rewound by the driving means between the first winding drum and the second winding drum. In the tape speed control device of the tape-type banknote storage and feeding device configured to perform feeding from the second winding drum to the external banknote conveying means, a pulse corresponding to the rotation angle of the second winding drum is provided. Producing rotating pa And a rotation pulse generating means for adding a pulse when rotating in the winding direction starting from the start of tape winding of the second winding drum and subtracting a pulse when rotating in the rewinding direction. Pulse counting means for accumulatively counting the pulses generated by the means, speed detection means for determining the rotation speed of the second winding drum based on the pulses, and when the first and second winding drums rotate,
The current diameter of the second winding drum is determined based on the count value obtained by the pulse counting means, the tape thickness, and the bill thickness, and the current diameter of the second winding drum and the rotation speed of the second winding drum are used to determine the current winding diameter. And a control means for calculating a tape moving speed on the outer periphery of the take-up drum and controlling the driving means so that the tape moving speed becomes a preset set speed.

According to a second aspect of the present invention, there is provided a first winding drum for winding only the tape, and a second winding drum for winding the tape and the bill together with the bill sandwiched between the tapes. The tape is rewound and wound by the driving means between the first winding drum and the second winding drum, so that the bills fed from the external bill transport means are separated by a second interval at a predetermined interval. And winding of the tape between the first winding drum and the second winding drum by the driving means, thereby transferring the external bill from the second winding drum. The driving means drives the second winding drum to rotate in both the winding and rewind directions, and applies a rotational force in the winding direction to the first winding drum, thereby causing the first winding drum to rotate. The winding torque of the winding drum A tape speed control for a tape-type banknote storage and feeding device, wherein a torque limiter for regulating and a one-way clutch for transmitting a rotating force to the first winding drum when the second winding drum is in a rewinding state are provided. A rotation pulse generating means for generating a pulse corresponding to a rotation angle of the second winding drum; and a pulse for rotating the second winding drum in the winding direction starting from the start of tape winding. Pulse counting means for accumulating the pulses generated by the rotating pulse generating means so as to subtract the pulses when rotating in the rewind direction, and measuring the interval time between the pulses generated by the rotating pulse generating means. Pulse interval timing means, and first and second
At the time of rotation of the take-up drum, based on the number of rotations of the tape around the second take-up drum, the tape thickness, and the bill thickness obtained from the count value obtained by the pulse counting means.
The current diameter of the winding drum is calculated, and the tape moving speed on the outer periphery of the winding drum is calculated from the calculated diameter and the pulse interval time obtained by the pulse interval timer. Control means for controlling the driving means so as to attain a preset speed.

[0013] According to a third aspect of the present invention, in the tape speed control device of the tape type banknote storage and feeding device according to the second aspect, the control means uses a pulse instead of calculating the current diameter of the second winding drum. On the basis of the pulses counted by the counting means, the present diameter of the second winding drum is obtained by referring to a table of pulse numbers versus diameter values prepared in advance.

According to a fourth aspect of the present invention, in the tape speed control device of the tape type banknote storage and feeding device according to the second or third aspect, the control means sets the diameter of the second winding drum when winding the banknote. Corresponding to the total cross-sectional area up to the outer circumference of the tape obtained from the sum of the cross-sectional area of the winding drum and the cross-sectional area of the winding drum as viewed from the cross-sectional direction of the winding drum obtained from the number of banknotes being wound. It is obtained by using an equation for calculating the diameter of a circle.

According to a fifth aspect of the present invention, in the tape speed control device of the tape type banknote storage and feeding device according to the second or third aspect, the control means controls the number of rotations of the tape wound around the second winding drum. It is characterized in that it is obtained from a diameter at the beginning of tape winding using a calculation formula expressed by a recurrence formula calculated from a bill length and a stored bill interval distance.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing the tape speed control device of the present invention, a tape-type bill storage and feeding device to which the present invention is applied will be described.

FIG. 1 to FIG. 8 show a tape type bill storing and feeding device to which the present invention is applied. This bill storage and feeding device is configured in a cassette 1 formed in a box shape, and has a horizontally elongated slit-like bill entrance (not shown) that allows the bill W to enter and exit as a longitudinal direction at an upper position on one side thereof. At the time of deposit, the bill W is stored in the direction of arrow Q through the opening (FIG. 1), and at the time of deposit, it is fed in the direction of arrow R (FIG. 2). Depending on whether it is the storage direction or the feeding direction, the rotation direction of each roller and drum described below, and even the running direction of the tape may be reversed,
In the following description, the direction corresponding to the storage direction will be referred to as a first direction, and the direction corresponding to the feeding direction will be referred to as a second direction. In the embodiment described here, a case is shown in which two tapes T1 and T2 are used, and the bill W is stored between the tapes T1 and T2, and the tape width is approximately 1/6 of the bill width.

In the following, a case where two tapes T1 and T2 are used will be described, but the present invention is a single tape type in which a bill W is conveyed between a guide member and one tape T. It is clarified beforehand that the present invention can be applied to.

At the position immediately inside the bill entrance, tapes T1 and T2 separately arriving from first winding drums 4a and 4b, which will be described later, are stacked and guided to a second winding drum 7 (see FIG. 1). 1: when the banknotes are stored) or the tapes T1 and T2 arriving in a stacked state from the second winding drum 7 are separately led to the pair of first winding drums 4a and 4b (FIG. 2: bill feeding). Time) A pair of rollers 3a, 3b are vertically arranged, and a first reel-up drum 4 with a flange on the back side for separately winding the tapes T1, T2.
a and 4b are respectively attached to the first winding shafts 5a and 5b via tension limiting torque limiters 6a and 6b.

Behind the rollers 3a and 3b in the cassette 1, a second winding drum 7 for winding the bill W while being sandwiched between the tapes T1 and T2 is supported by a second winding shaft 8. Have been. The second winding drum 7 is made of a light-transmitting material, for example, a transparent acrylic resin, for detecting a bill remaining described later. As shown in FIG. 2, the tapes T1 and T2 wound around the second winding drum 7 when the banknotes are fed out are respectively transferred to the first winding drums 4a and 4b via rollers 3a and 3b and idlers 9a and 9b, respectively. It is wound up. Behind the second winding drum 7, a motor 10 for rotating the first winding drum 4a, 4b and the second winding drum 7 when storing or feeding out the banknote W,
For example, a DC motor is provided. A rotary encoder 11 for detecting the number of rotations is directly connected to the motor 10. Here, the rotation speed corresponds to a rotation angle different from the rotation speed. If necessary, the rotation speed can be obtained as the number of rotations per unit time.
Uniaxially or biaxially stretched tapes are used as the tapes T1 and T2. Preferably, a tape material made of polyethylene terephthalate coated with silicon or the like is used to prevent jamming due to adhesion of an adhesive substance. To

A relatively small-diameter pulley 12 is mounted on the motor 10, and the pulley 12 is mounted on the first winding shafts 5a and 5b.
Pulleys 14a and 14b having a diameter substantially the same as or slightly larger than the diameter are attached, and a relatively large diameter pulley 16 is attached to the second winding shaft 8. A timing belt 15 is applied so as to pass through the pulleys 12, 14b, 16, 14a in order and return to the pulley 12 again. These pulleys and timing belt 15
Is also used to transmit the rotation of one of the first winding drums 4a and 4b and the second winding drum 7 in the rewinding direction to the other winding drum. In the embodiment, the first one-way clutches 13a and 13b transmit rotation to the first winding shafts 5a and 5b of the first winding drums 4a and 4b only in the winding direction (dispensing direction) to the pulleys 14a and 14b, respectively. And second one-way clutches 17a and 17b. Pulleys 14a, 1
When viewed from the pulleys 14a, 14b rotating together with the first winding drums 4a, 4b in the direction of the second winding drum 7 according to the diameter difference between the pulley 4b and the pulley 16, the speed reduction means is constituted. The reduction ratio in this case is about 1: 3 to 1: 6
If the torque limiters 6a and 6b do not operate, the first winding drums 4a and 4b wind the tapes at a speed higher than the speed V1 at which the second winding drum 7 rewinds the tapes T1 and T2. In order that the speed V3 is always faster, V
1 <V3 is set. The angular velocity at which the second winding drum 7 rewinds the tape is the fastest when the diameter is the minimum (when the tape winding amount is close to zero). The first winding drums 4a and 4b are slower than the tape speed when the tapes T1 and T2 are rewound.
May be set so that the angular velocity at the time of winding the tapes T1 and T2 at the minimum diameter increases.

Between the bill entrance and the rollers 3a, 3b,
For example, an optical entrance / exit sensor PS1 including a light emitting diode and a phototransistor is provided. Various sensors are provided in the cassette 1 in addition to the doorway sensor PS1. Banknote W on second winding drum 7
In order to detect the presence or absence of banknotes, that is, to detect remaining banknotes, a light emitting element PS21, for example, a light emitting diode disposed opposite to one peripheral surface of the drum, and the other of the drum so as to receive the emitted light transmitted through the drum. There is provided a light receiving element PS22 disposed opposite to the peripheral surface, for example, a bill remaining detection sensor PS2 including a phototransistor. The banknote remaining detection sensor PS2 detects the presence of the banknote W on the second winding drum 7 because even if one banknote W is wound on the second winding drum 7, it is shielded from light. The winding drum 7 in this case is made of acrylic transparent resin,
Transmits light. A tape end sensor PI1 is arranged between the roller 3a and the idler 9a close to the latter, and a tape end sensor PI2 is arranged between the roller 3b and the idler 9b close to the latter. Double tape end sensor PI
1 and PI2 detect the end positions of the tapes T1 and T2, that is, that the tape has reached the start position or the end position, and output an end position signal. As described above, the motor 10 is provided with the rotary encoder 11 that transmits a pulse according to the rotation angle.

A transport device 26 for storing or feeding out bills W is disposed on the apparatus main body side so as to be located in front of the bill entrance of the cassette 1. The transport device 26 can be constituted by a pair of upper and lower belts or roller rows. The relationship between the transport speed of the transport device 26 and the speed of each unit in the cassette 1 will be described in the section of operation.

Next, the operation of the tape-type banknote storage and dispensing apparatus having the above configuration will be described.

When the banknotes W are stored in the cassette 1 upon receipt of money, as shown in FIG. 1, the second winding shaft 8 is rotated clockwise (in the direction of the arrow) in FIG.
To rotate. At this time, the rotation speed of the second winding shaft 8 is set such that the winding speed V1 of the tapes T1 and T2 is about 5 to 25% higher than the conveying speed V2 of the conveying device 26, and the bill W is inserted into the cassette. By acting to draw in, the jam of the bill is prevented.

At this time, both the large-diameter pulley 16 and the small-diameter pulleys 14a, 14b are counterclockwise (FIG. 1: arrow direction).
However, the first winding shafts 5a and 5b cannot rotate clockwise due to the action of the second one-way clutches 17a and 17b (rotation is transmitted only in the direction of the dotted arrow),
By the action of the first one-way clutches 13a, 13b, the rotation of the shafts 5a, 5b is locked between the side plates 27, 27, the small-diameter pulleys 14a, 14b idle, and the first winding shafts 5a, 5b stop. Has remained.

The tape T1,
When winding T2, the first winding drums 4a and 4b try to rotate clockwise due to the pulling action of the tape.
Since the first winding shafts 5a and 5b do not rotate clockwise, tension is generated on the tapes T1 and T2. When the tension exceeds a predetermined value, a torque higher than the predetermined value is applied to the torque limiters 6a and 6b, and the first winding drums 4a and 4b
4b comes to rotate. As a result, the tapes T1, T
2 is always given a tension according to the set torque of the torque limiters 6a and 6b.

In this manner, the banknotes W to be stored are stored, and when the storing process is completed, the motor 10 stops.
At this time, the number of stored bills W is detected based on the count result of the entrance / exit sensor PS1. Banknote W
The above operation is repeated each time there is a storage command of the banknote W, and the banknote W is wound up and stored in the second winding drum 7. When the storage of the banknote W is completed and the banknote W becomes full, the ends of the tapes T1 and T2 are taped. It is detected by the end sensors PI1 and PI2, and further storing of banknotes is stopped.

Next, when the bill W is paid out by dispensing, as shown in FIG. 2, the second winding shaft 8 is rotated clockwise (in the direction of the arrow) in FIG. The winding drum 7 is rotated clockwise (in the direction of the arrow) and the tapes T1 and T2 are rewound therefrom. At the same time, the pulley 16 on the shaft 8 and the timing belt 1
5 to the first winding shafts 5a, 5b from the pulleys 14a, 14b engaged through the second one-way clutch 17a,
The rotation of the first one-way clutch 13a, 13b becomes free while the rotation is transmitted by the operation of 17b. As a result, the first winding drums 4a and 4b become tapes T1 and T2.
Since the tapes T1 and T2 are to be wound at a speed higher than the speed at which the tapes T1 and T2 are rewound, tension is generated without loosening the tapes T1 and T2. When the tension exceeds a predetermined value, a torque higher than the predetermined value is applied to the torque limiters 6a and 6b, causing slippage. As a result, a tension according to the set torque of the torque limiters 6a, 6b is always applied to the tapes T1, T2.

Thus, the tapes T1 and T2 are
The paper money W between the tapes T1 and T2 passes through the rollers 3a and 3b, is discharged from the paper money entrance, and is fed to the transport device 25 as the paper is rewinded from the take-up drum 7. The number of bills W to be dispensed is the entrance / exit sensor PS1
Is detected, the motor 10 is stopped, and the dispensing process ends. The above operation is repeated every time there is a withdrawal command, and the bill W
When all the bills W have been dispensed, the bill remaining detection sensor PS2 detects that there is no bill and notifies the apparatus main body that the second winding drum 7 is empty. At the time of dispensing, the relationship between the speed V1 of the tapes T1 and T2 and the transport speed V2 of the transport device 25 is V1 <V2, and the speed V2 is set to be higher than the speed V1 by about 5 to 25%. To the outside.

The depositing / dispensing process and the control of the transport motor 10 related thereto are performed mainly by the CPU 31 shown in FIG. By counting the pulses output from the rotary encoder 11 in accordance with the rotation of the motor 10 by the reversible counter 32, a count value corresponding to the position of the tape 10 is obtained. The reason is that the tapes T1 and T2 have an end, and it is necessary to recognize and operate the absolute position. In the embodiment of the present invention, the count value is set to zero based on the position corresponding to the detection output of the tape end sensors PI1 and PI2 when the winding amount on the second winding drum 7 has just become zero. Reversible counter 32
Is output to the CPU 31, where the running position, the moving distance or the moving speed of the tape are obtained by data processing, and these are used for controlling the motor 10 and the like accompanying the depositing and dispensing processing. The drive of the motor 10 is controlled by the output of the CPU 31 via the motor drive circuit 33. Hereinafter, a series of control contents executed by the CPU 31 of the present invention will be described with reference to a flowchart.

1) Flow of payment processing The motor 10 is turned ON (forward / reverse) / OFF from the CPU 31.
It is driven via a motor drive circuit 33 by a command. When the motor 10 rotates, pulses are output from the rotary encoder 11 attached to the motor 10 at a fixed number (for example, 50) per rotation of the motor,
The motor 1 is controlled by ON / OFF control synchronized with this pulse.
Zero speed is controlled. As shown in FIG. 10, when the depositing process is started, first, it is checked whether or not a bill W is present by an entrance / exit sensor PS1 provided at the entrance / exit of the cassette 1 (step 1001). If there is no bill W, the process stands by until there is a bill (step 1002) unless the depositing process is completed. When there is a bill, the tape speed V1 is set to V1 = 1300 mm / s (step 1003), the motor 10 is started to rotate in the depositing direction (step 1004), and the speed of the motor 10 is controlled (step 1005). The speed control of the motor 10 is continuously performed until the motor stops, and details thereof will be described separately. Next, the apparatus waits until the entrance / exit sensor PS1 detects that there is no bill (step 1006). When the exit sensor PS1 detects that there is no bill, the tape P is moved by 50 mm corresponding to the bill interval at the time of conveyance from the time when the bill W passes over the entrance / exit sensor PS1. (Step 1007). When the tape P has advanced by 50 mm, the presence / absence of the bill W is confirmed again by the entrance / exit sensor PS1 (step 1008).
After confirming that there is no bill, the counter C1 for counting the deposited bill and the counter C2 for counting the number of stored bills are each incremented by 1 (step 1).
009), stop the motor 10 (step 1010)
The deposit processing for one bill is completed. Hereinafter, the process returns to the first step 1001 and is repeated until all the deposit processing is completed.

2) Flow of Dispensing Process As shown in FIG. 11, when the dispensing process is started, first, the tape speed V1 is set to V1 = 1000 mm / s (step 1101), and the motor 10 is moved in the dispensing direction. The rotation is started (step 1102), and the speed of the motor 10 is controlled (step 1103). Also in this case, the speed control of the motor 10 is continuously performed until the motor stops. The transport speed V2 of the external transport device 26 is set to be higher than the tape speed V1, and V2 = 1300 mm / s. Thereby, the bill W is pulled out from the outside. It is checked whether or not there is a bill on the entrance / exit sensor PS1, and if there is no bill, the process waits until there is a bill (step 1).
104). If it is detected that there is a bill, then it waits until there is no bill, and if it detects that there is no bill (step 11).
05) The counter D1 for counting the number of dispensed coins is incremented by one, and the counter C2 for counting the number of stored coins is decremented accordingly by one (step 11).
06). That is, by detecting "the presence of a bill" → "the absence of a bill" at the entrance / exit sensor PS1, it is counted that one bill has been dispensed. The dispensing number is checked, and if the dispensing number D1 has not reached the predetermined number, step 1104 and the subsequent steps are repeated, and when the dispensing number reaches the predetermined number, the dispensing is completed (step 1107) and the tape speed is set to 500 / mm. Drop (step 1108),
While controlling the speed of the motor 10 (step 110)
9) Advance the next bill in the dispensing direction until its tip comes to the entrance. It is checked whether or not there is a bill W on the entrance / exit sensor PS1 (step 1110). If there is no bill W, the process waits until there is a bill. When it is confirmed that there is a bill, the motor 10 is temporarily stopped to switch to the deposit direction (step 1111), and the motor 10 is started to rotate again in the deposit direction (step 1112), and the speed of the motor 10 is controlled (step 1113). ). It is confirmed whether or not there is a bill W on the entrance / exit sensor PS1 (step 1114). Here, if there is a bill, it waits until there is no bill. When there is no bill, the motor rotation is continued until the tape advances by 50 mm corresponding to the bill interval at the time of conveyance after the bill passes on the entrance / exit sensor PS1 (step 1115).
m, the motor 10 is stopped (step 1).
116), the dispensing process is completed in preparation for the next deposit process.

3) Derivation of Formula for Calculating Current Drum Diameter of Winding Drum 7 (a) Formula for Calculating Drum Diameter from Number of Wound Banknotes The thickness of a banknote is h, the thickness of a tape is Is t, the number of banknotes wound on the winding drum 7 is n, the drum diameter when the number of wound banknotes is _zero (= drum shaft diameter) is D ₀ , and the drum diameter when the number of banknotes is n is D. If the length of the bill is L and the interval between the bills at the time of winding is P (constant), the sectional area S corresponding to the drum diameter D is the sectional area of the drum shaft S ₀ , and the bill winding section the cross-sectional area of only the _{S 1, S = S 0 +} S 1 = πD 2/4 ... (1) S 0 = πD 0 2/4 ... (2) an area S ₁ is wound number n of bills, for example, 100 Assuming you have the value of the degree to which more than a sheet, as an approximation, this viewed as _{S 1 = 2nt (L + P} ) + nhL ... (3) Can. The following equations are derived from these equations (1) to (3). ^{_{D = 2 [{πD 0 2}} /4 + 2nt (L + P) + nhL} / π] 1/2 ... (4) The equation (4) is a calculation formula for calculating the drum diameter D from the bill winding number n.

(B) Calculation formula for calculating the drum diameter from the drum rotation speed Here, the drum rotation speed is not the drum rotation speed (for example, a physical quantity expressed in the unit of rpm), but the number of wound banknotes. The number of rotations of the drum (unit is "r") with reference to the time when n is zero. Assuming that the drum diameter when the drum rotation number is generally m is D _m , the number n of wound banknotes is an approximate value: n = D _m π / (L + P) (5) Drum when m = 1 The diameter D ₁ is calculated by the equation (4) and the equation (5).
From _{equation, D 1 = 2 [{πD} 0 2/4 + 2tπD 0 (L + P) / (L + P) + hLπD 0 / (L + P)} / π] 1/2 = 2 [{D 0 2/4 + 2tD 0 + hLD 0 / (L + P )}] ^1/2 (6) Similarly, the drum diameter D ₂ at the time of m = 2 _{is, D 2 = 2 [{D} 1 2/4 + 2tD 1 + hLD 1 / (L + P)}] 1/2 ... ( 7) which was generalized, the drum diameter D _{m + 1} when the drum rotation speed is m + 1 _{is, D m + 1 = 2 [} {D m 2/4 + 2tD m + hLD m / (L + P)}] 1/2 ... (8) Expression (8) is a calculation expression for calculating the drum diameter D _{m + 1} from the drum rotation speed m.

4) Flow of Motor Speed Control (a) Speed Control Method 1 FIG. 12 shows an example of a detailed flow of the speed control processing blocks 1005, 1103, 1109, and 1113 in FIG. 10 and FIG. is there.

It is checked whether the rotation direction of the motor 10 is the depositing direction (storage direction) or the dispensing direction (delivery direction) (step 1).
201), in the deposit direction, the count value A of the pulse output from the rotary encoder 11 is set to A every time a pulse is generated.
= A + 1 and increment processing (step 120)
2) If it is the dispensing direction, decrement processing is performed with A = A-1 (step 1203). After these processes, based on the count value A, the number of rotations m (corresponding to the rotation angle) of the winding drum 7 from the reference position, that is, the position where the tapes T1 and T2 are not wound on the second winding drum 7 at all. ) Is calculated (step 1204).

As an example, the following specific example is assumed. Tape transport speed V1 = 1300 mm / s,
Number of pulses X from the rotary encoder 11 per rotation of the motor 10 = 50, diameter D ₀ of the second winding drum 7 at the reference position = 70 mm, bill thickness h = 0.11 m
m, tape thickness f = 0.025 mm, bill length L = 16
0 mm, bill interval P = 50 mm, number of bills wound 100
It is assumed that the reduction ratio between the pulleys 14a and 14b and the pulley 16 is 22/134. 100 on winding drum 7
In a state in which one banknote is wound, the count value A
Is approximately A = 2750. Therefore, m = A /
X = 2750/50 = 55 (rotation).

Next, based on the obtained rotational speed m, the current drum diameter D is calculated as D = 84.7 m based on the equation (8).
m (step 1205), and based on the obtained drum diameter D, the current drum circumference πD is calculated as πD = π × 8.
4.7 = 266.09 mm (Step 120
6). The tape traveling distance πD / X per pulse is defined as 2
66.09 / 50 = 5.32 mm (Step 1)
207) Further, the time t per pulse at the tape speed set value to be controlled of 1300 mm / s is
t = πD / V1 = 5.32 / 1300 = 4092 × 10
^-6 s is calculated (step 1208).

The time t thus obtained is compared with the time tp from the previous speed control to the current speed control (step 1209). Again, if t> tp,
The rotation speed of the motor 10 is too high, and the motor 10 is turned off (step 1210), and t ≦ tp
If so, it means that the rotation speed of the motor 10 is too slow or just right, and the motor 10 is turned on (step 1211).

(B) Speed control method 2 Steps 1301 to 1304 and Steps 1309 to 1
Step 312 is the same as Steps 1201 to 1204 and Steps 1208 to 1211 described above, and a detailed description thereof will be omitted here.

From the drum diameter at the rotational speeds m and m-1 obtained in step 1304 (corresponding to step 1204), the current drum diameter D is calculated by the following equation (8).
It is calculated to be 4.7 mm (step 1305), and the obtained drum diameter D is registered in a table as exemplified in Table 1 (step 1306).

[0043]

[Table 1] This table stores the drum diameter D at the rotation number m and can be used for calculating the diameter D at the drum m + 1 rotation. In this example, the calculated value of the diameter every ten rotations is stored. This is because the speed is switched at intervals of 10 rotations. When higher speed accuracy is required, the number of rotations of the storage table may be made smaller, for example, every five rotations.

It is needless to say that the drum diameter D may be obtained by calculation each time without using the above table.

Next, based on the obtained drum diameter D,
The current drum circumference πD is given by πD = π × 84.7 = 26.
It is calculated to be 6.09 mm (step 1307). Then 1
The tape travel distance πD / X per pulse is 266.0
9/50 = 5.32 mm (step 130)
8) The time t of one pulse at the tape speed set value of 1300 mm / s to be controlled is t = πD / V = 5.32 / 1.
300 = 4092 × 10 ⁻⁶ s (Step 13
09). The tape travel distance πD / X for one pulse obtained in this manner is registered in a table as exemplified in Table 2 as a correspondence relationship with the drum rotation number m (step 1).
306).

[0046]

[Table 2] Hereinafter, step 1309 and subsequent steps corresponding to step 1208 and subsequent steps described above are executed.

(C) Speed control method 3 This embodiment uses a drum diameter D based on the number of bills.
Is a method for obtaining As shown in FIG. 14, this method is characterized in that equation (4) is used in step 1404, and the other points are the same as those of the speed control method already described. Here, the drum diameter D is calculated from the number n of banknotes wound using the count value C2 of the banknotes W wound and stored on the winding drum 7 and equation (4) (step 14).
04). After obtaining the drum diameter D, it is the same as that already described. Steps 1401 to 1403 in FIG. 14 correspond to steps 1201 to 1203 in FIG. 12, and steps 1405 to 1410 correspond to steps 1206 to 1 in FIG.
This corresponds to 211.

(D) Verification of variation in calculation drum diameter due to difference in calculation method and bill length Now, as an example, specifically, specifically, n = 200, L = 160 mm (10,000 yen bill), P =
The variation of the calculated drum diameter due to the difference in the calculation method and the bill length will be verified with 50 mm.

In the case of the above specific example, according to equation (4), D = 110 mm, and according to equation (8), D = 110 mm. That is, the same result can be obtained by any of the formulas.

Next, if n = 200, L = 126 mm (Italy 5000 lira bill), and P = 50 mm, according to equation (4), D = 103.3 mm, and according to equation (8), D = 103.3 mm. = 108.6 mm.

According to the above results, the variation of the drum diameter due to the difference in the bill length is smaller in the equation (8). Therefore, when handling the bills having different lengths, the drum diameter is determined by using the equation (8). It can be seen that, by performing the calculation and controlling the rotation speed using the calculation result, the control closer to the reference conveyance speed can be achieved. Therefore, it can generally be said that it is better to control the speed using the equation (8). However, in the case where the bill length is fixed, for example, in the case of dollar bills, etc., sufficiently practical speed control can be achieved even by using equation (4). Equation (8) is more effective when the bill length is not fixed.

[0052]

According to the present invention, at the time of deposit, the transport speed and the winding speed of the banknote transported to the entrance are the same (in the embodiment, 13
00 mm / s) can be realized by driving the motor from the point of time when the bill reaches the entrance sensor, and it is possible to prevent the occurrence of jamming and loose winding at the entrance.

Further, at the time of feeding, the bills can be sent out at a speed slightly lower than the speed of conveying the bills conveyed from the entrance, so that the bills can be smoothly transferred.

Further, regardless of the winding position of the bill at the beginning, middle, or end of the drum, a constant winding quality is achieved, and the bill is transferred to a subsequent conveyance path at the time of feeding. Can be smoothed.

[Brief description of the drawings]

FIG. 1 is an internal perspective view showing a specific example of a bill storing and feeding device to which the present invention is applied, together with an operation direction when storing bills.

FIG. 2 is a perspective view showing a state at the time of bill feeding in the apparatus of FIG. 1;

FIG. 3 is a side view showing the bill storing and feeding device according to FIGS. 1 and 2 together with the arrangement of a tape path and a sensor when storing bills;

FIG. 4 is a side view showing the bill storage and dispensing apparatus according to FIGS. 1 and 2 together with a tape path and a positional relationship of sensors when dispensing bills.

FIG. 5 is a side view showing the bill storing and feeding device shown in FIGS. 1 and 2 with a focus on a tape path and a belt connection relationship;

FIG. 6 is a cross-sectional view of the second winding drum of FIG. 5 as viewed from line AA.

FIG. 7 is a cross-sectional view of the first winding drum of FIG. 5 as viewed from line BB.

FIG. 8 shows the second winding drum, the motor, and the first winding drum shown in FIG. 5;
Sectional drawing which shows a part which looked at the winding drum from CC line | wire as a side view.

FIG. 9 is a block diagram showing the overall configuration of a tape speed control device according to the present invention.

FIG. 10 is a flowchart showing a procedure of a deposit processing of the bill storing and feeding device according to the present invention.

FIG. 11 is a flowchart showing a procedure of a dispensing process of the bill storing and feeding device according to the present invention.

FIG. 12 is a flowchart of a subroutine showing a first embodiment in a motor speed control procedure in the processing procedures shown in FIGS. 10 and 11;

FIG. 13 is a flowchart of a subroutine showing a second embodiment in the procedure of the motor speed control in the processing procedure shown in FIGS. 10 and 11;

FIG. 14 is a flowchart of a subroutine showing a third embodiment in a motor speed control procedure in the processing procedures shown in FIGS. 10 and 11;

FIG. 15 is an explanatory diagram for explaining one principle of conventional tape speed detection.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cassette 3a, 3b roller 4a, 4b first winding drum 5a, 5b first winding shaft 6a, 6b torque limiter 7 second winding drum 8 second winding shaft 10 motor 11 rotary encoder 13a, 13b First one-way clutch 14a, 14b Pulley 15 Belt 16 Pulley 17a, 17b Second one-way clutch 18 Drive shaft 26 Transport device 31 CPU 32 Reversible counter 33 Motor drive circuit PS1 Doorway sensor PS2 Bill remaining sensor PI1, PI2 Tape end Sensor

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Hiroshi Sumita 1-3-1 Shimoteno, Himeji-shi, Hyogo Glory Industry Co., Ltd.

Claims (5)

[Claims] A first winding drum that winds only the tape; and a second winding drum that winds the tape and the bill together with the bill sandwiched between the tapes. The drive means causes the tape to be rewound and wound between the take-up drum and the second take-up drum. The second winding drum is wound around the first winding drum and the second winding drum. In the tape speed control device of the tape-type banknote storage and feeding device configured to perform feeding to the banknote conveying device, a rotation pulse generating unit that generates a pulse corresponding to a rotation angle of the second winding drum, Second The pulse is generated by the rotation pulse generating means so as to add the pulse when rotating in the winding direction from the start of winding of the tape on the winding drum and subtract the pulse when rotating in the rewinding direction. Pulse counting means for cumulatively counting pulses; speed detecting means for determining a rotation speed of the second winding drum based on the pulse; and pulse counting means for rotating the first and second winding drums. The current diameter of the second winding drum is determined based on the count value, the tape thickness and the bill thickness obtained by the above, and the winding is performed based on the determined diameter and the rotation speed of the second winding drum. Control means for calculating a tape moving speed on the outer periphery of the drum, and controlling the driving means so that the tape moving speed becomes a preset set speed. Tape speed control device of the tape-type bill storage feeding device that. A first winding drum that winds only the tape; and a second winding drum that winds the tape and the bill together with the bill sandwiched between the tapes. The drive means causes the tape to be rewound and wound between the take-up drum and the second take-up drum. The second winding drum is wound around the first winding drum and the second winding drum. The driving means drives the second winding drum to rotate in both the winding and rewinding directions, and rotates the first winding drum in the winding direction. And the first winding The tape includes a torque limiter that regulates a winding torque, and a one-way clutch that transmits torque to the first winding drum when the second winding drum is in a rewinding state. In the tape speed control device of the type banknote storage and feeding device, a rotation pulse generating means for generating a pulse corresponding to a rotation angle of the second winding drum; Pulse counting means for adding the pulse when rotating in the winding direction as a starting point and cumulatively counting the pulses generated by the rotation pulse generating means so as to subtract the pulse when rotating in the rewind direction, A pulse interval timer for measuring an interval time of a pulse generated by the rotation pulse generator, and at the time of rotation of the first and second winding drums. The second obtained from the count value obtained by said pulse counting means
Calculating the current diameter of the second winding drum based on the number of rotations of the tape around the winding drum, the tape thickness, and the bill thickness, and obtaining the calculated diameter and the pulse interval time counting means. Control means for calculating the tape moving speed on the outer periphery of the winding drum from the pulse interval time and controlling the driving means so that the tape moving speed becomes a preset set speed. The tape speed control device of the tape type bill storage and feeding device. 3. A tape speed control device for a tape type banknote storage and feeding device according to claim 2, wherein said control means comprises:
Instead of calculating the current diameter of the second winding drum, the second winding is performed by referring to a pulse number versus diameter table created in advance based on the pulses counted by the pulse counting means. A tape speed control device for a tape-type bill storage and feeding device, wherein a current diameter of a take-up drum is obtained. 4. A tape speed control device for a tape-type banknote storage and feeding device according to claim 2, wherein said control means measures the diameter of said second winding drum when winding the banknote. The diameter of the corresponding circle from the total cross-sectional area up to the outer circumference of the tape calculated from the sum of the cross-sectional area of the winding drum and the cross-sectional area of the winding drum as viewed from the cross-sectional direction of the winding drum determined from the number of bills The tape speed control device of the tape-type banknote storage and feeding device, which is obtained by using an expression for calculating 5. The tape speed control device of a tape type banknote storage and feeding device according to claim 2, wherein said control means controls the number of rotations of the tape wound around said second winding drum. A tape speed control device for a tape-type bill storage and feeding device, wherein the tape speed control device is obtained from an initial diameter by using a calculation formula represented by a recurrence formula calculated from a bill length and a stored bill interval distance.