JP2020029327A - Paper sheet conveying system - Google Patents

Abstract

To provide a paper sheet conveying device in which paper sheets are neither bent, nor stay.SOLUTION: There is provided a paper sheet conveying system 1 comprising: an air delivery tube 10 for conveying paper sheets 2 while guiding an air stream in the tube; a feed-in device 20 for feeding the paper sheets 2 in the air delivery tube 10; an air stream generation device 30 for generating the air stream in the air delivery tube 10; a control part 100 for controlling the air stream generation device 30; and a collection device 40 for collecting the paper sheets 2, which is provided at an end edge part of the air delivery tube 10, and it is a feature that the air delivery tube 10 or the collection device 40 is provided with a detection part 25, and an air velocity inside the air delivery tube 10 is changed by controlling the air stream generation device 30 via the control part 100 when passage of the paper sheets 2 is detected by the detection part 25.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a paper sheet transport system that transports paper sheets by an air flow.

  2. Description of the Related Art A system in which paper sheets are transported by an air flow is provided, and is used in a game arcade or the like. The paper sheet transport apparatus using the air flow can be downsized compared to a transport apparatus using a belt or a roller, and can be operated with reduced running costs because consumables such as a belt and a roller are not required.

  In addition, the paper sheet transport device by air flow has a more flexible transport layout than the belt or roller type, and the transport of paper sheets to different locations in the same room is more flexible, such as between rooms or between different levels. And it can be transported over long distances. For example, paper sheets sent from a feeding device on a pachinko island in a game hall to an air duct are transported by airflow to a separate vault, where they can be collected and collected.

Japanese Patent No. 4130697 Patent No. 4182143 Patent No. 4409626 JP 2012-218827A

  However, the higher degree of freedom and the longer the distance, the more complicated the route for laying the air duct, and steps, bends, slopes, etc. are provided as necessary to avoid height differences and obstacles with ascent and descent. It will be. In these complicated air duct routes, the wind speed suitable for transporting paper sheets is not constant throughout all the ducts, and a suitable wind speed according to each position is included, including the recovery device at the end of the air duct. is there. If the wind speed deviates from a suitable wind speed according to the site, the paper sheets are likely to bend or stay and be jammed. Then, extra labor is required for the worker to clear the jam of the paper sheets.

  The present invention, in a paper sheet transport system using an air flow, preferably achieves the transport of paper sheets along various lengths, height differences, and bends of a blower pipe path from the windward side to a recovery device at a terminal end in an airflow. An object of the present invention is to provide a control mechanism for preventing paper sheets from bending or staying.

  A paper sheet transport system according to the present invention is a system for transporting paper sheets by an air flow, and includes a blower pipe that guides an air flow in a pipe and transports the paper sheets, and a paper sheet into the blower pipe. , An air flow generating device for generating the air flow in the blower tube, a control unit for controlling the air flow generator, and a paper sheet collecting device provided at a terminal end of the blower tube. In the paper sheet transport system including the collection device, a detection unit is provided in the blower tube or the collection device, and when the detection unit detects that the paper sheet has passed, the control unit controls the air flow. It is characterized in that the generator is controlled to change the wind speed in the blower tube.

A part of the recovery device, a part of a downcomer descending downstream, a part of an ascending pipe ascending downstream, and a part of a bent tube that bends, which are parts where the wind speed of the blower tube is to be controlled. It is preferable to provide the detection unit for detecting a sheet conveyed in the air duct in at least one of the locations or in the vicinity thereof.
It is preferable that the detection unit is provided on the front side of a portion where the wind speed of the blower tube is to be controlled.

In a case where the blower tube in front of the recovery device is a downcomer that descends toward the recovery device, it is preferable that the wind speed in the downcomer be controlled to be reduced.
In a case where the blower tube in front of the recovery device is a rising tube rising toward the recovery device, it is preferable to control the wind speed in the riser tube to be high.

In a case where the blower tube at the portion where the wind speed is to be controlled is a downcomer that descends toward the downstream side, it is preferable to control so as to reduce the wind speed in the downcomer.
In the case where the blower tube at the portion where the wind speed is to be controlled is a rising tube rising toward the downstream side, it is preferable to control so as to increase the wind speed in the riser tube.

The control unit calculates the speed of the paper sheet conveyed in the air duct based on the detection signal input from the detection unit, and calculates the air flow according to the calculated speed of the paper sheet. It is preferable that the air flow by the generator is changed to control the wind speed in the blower tube to be slower or faster.
In this case, the speed of the sheet can be calculated by the control unit based on a time difference between the front end and the rear end of the sheet conveyed in the air duct.

The detection unit is provided at two locations at a required interval at a position where the wind speed of the blower tube is to be controlled, and the control unit determines a time difference between the two detection units based on a time difference between the paper sheets. Speed can be calculated.
The air flow generating device may include a booster device for sending compressed air into the air duct.

  The detection unit is provided at a plurality of locations in the air duct, including the front side of the collection device, and the control unit detects the paper sheet by the detection unit provided on the front side of the collection device. It is preferable that control is performed so that the wind speed in the blower tube on the front side of the recovery device is made slower or faster than other parts.

  The detection unit, at least in the blower tube, the near side of the downcomer that descends toward the downstream side, the near side of the ascending tube that rises toward the downstream side, and provided in the recovery device, the detection unit, It is preferable to provide a display unit for displaying that the sheet has passed when it is detected that the sheet has passed.

  The feeding device bends a sheet to form a deformed portion and sends the deformed portion into the blower tube. The sheet is conveyed through the blower tube by receiving wind pressure from the deformed portion, and the collection device includes a paper sheet. This is suitable for a paper sheet transport system having a straightening unit including a group of rollers for straightening the above-mentioned deformed portion.

  ADVANTAGE OF THE INVENTION According to this invention, since paper sheets do not bend or stay, it is possible to avoid paper sheet jams and to reduce unnecessary labor of workers.

It is a schematic diagram which shows the structure of a paper sheet transport apparatus. It is explanatory drawing which shows an example of the laying path of the ventilation pipe in a paper sheet conveyance apparatus. It is explanatory drawing which shows the example of attachment of a detection part. It is explanatory drawing which shows the other example of attachment of a detection part. It is a schematic diagram which shows a collection device. 5 is a flowchart illustrating a procedure for transporting and collecting paper sheets according to the first embodiment. It is a flow chart which shows conveyance and collection procedures of paper sheets in a 2nd embodiment. It is a flowchart which shows the conveyance and collection procedure of the paper sheet in 3rd Embodiment. It is a flowchart which shows the conveyance and collection procedure of the paper sheet in 4th Embodiment. It is a perspective view which shows an example of a U-shaped tube. It is a perspective view which shows an example of a 90 degree curved tube. It is a perspective view which shows an example of a 90 degree vertical curved tube. It is a perspective view showing an example of an offset pipe. It is a perspective view which shows an example of a step tube. It is a perspective view showing an example of a straight twist pipe.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In all the drawings for describing the embodiments, members having the same functions are denoted by the same reference numerals, and the repeated description thereof may be omitted.

First, the overall configuration of the paper sheet transport device 1 according to the present embodiment will be described with reference to FIGS. As for the paper sheet transporting apparatus 1, the techniques described in Patent Documents 1 to 4 proposed by the present inventor can be referred to.
Hereinafter, a bill will be described as an example of a paper sheet.

  As shown in FIG. 1, in the paper sheet transport device 1, an air flow generated by an air flow generating device 30 such as a blower is supplied to a delivery pipe 31, a connection pipe 32, a blower pipe 10, a recovery device 40, and a return pipe 33. It is configured to circulate through. In order to form this circulation path, a bent tube 10a bent in a U-shape is formed in the blower tube 10. In addition, at an appropriate position of the blower tube 10, a plurality of feeding devices 20 for feeding the bills 2 into the blower tube 10 are provided. The air flow generation device 30, the delivery pipe 31, the connection pipe 32, the return pipe 33, and the recovery device 40 are installed in, for example, a housing 49, and the blower tube 10 and the feeding device 20 are installed outside the housing 49. .

  The feeding device 20 has a bill identifying device 21 installed on the front side of the feeding, and a bending device 22 installed on the back side and connected to the blower tube 10. The bending device 22 that forms the feeding device 20 forms a zigzag deformed portion 2b (which is a bent portion) at the rear end in the transport direction with respect to the flat portion 2a at the forward end portion of the banknote 2 in the transport direction. It is. Wind pressure from an air flow (indicated by an arrow in FIG. 1) acting on the air duct 10 acts on the deformed portion 2b, and the banknote 2 is conveyed in the air duct 10.

  In addition, the recovery device 40 is configured to include a separation unit 50, a straightening unit 70, and a storage unit 90 installed in the order of conveyance from the end of the blower tube 10. Among these, the separation unit 50 separates the banknote 2 conveyed in the blower tube 10 from the airflow that has given the banknote 2 a propulsive force, and sends the banknote 2 to the correction unit 70. The correction unit 70 corrects the deformed portion 2b of the bill 2 sent from the separation unit 50. The storage unit 90 stores the banknote 2 separated from the airflow by the separation unit 50 in a stretched state (a flat state) by correcting the deformation of the deformation unit 2b via the correction unit 70. It is.

  As described above, the paper sheet transport apparatus 1 forms the air duct 10 through which the paper sheets are transported by the airflow, and the deformed portion 2b at the rear end of the banknote 2 to feed the banknote 2 into the air duct 10. A feeding device 20, an air flow generating device 30 for applying wind pressure to the deformed portion 2b of the bill 2 to generate an air flow in the blowing tube 10 and a blowing device 10 installed at the end of the blowing tube 10; And a collection device 40 for collecting the bills 2 conveyed inside. Further, the paper sheet transporting apparatus 1 includes a control unit 100 that controls the entire apparatus such as the air flow generating device 30, the feeding device 20, and the collecting device 40 (see FIG. 2). In such a paper sheet transport apparatus 1, a transport path is configured in the order of the blowing device 10, the separating unit 50, the correcting unit 70, and the storage unit 90 from the feeding device 20 into which the banknote 2 is inserted, and the banknote 2 is transported in this order. Conveyed by road.

FIG. 1 illustrates the paper sheet transporting apparatus 1 on a single-row pachinko island (an island-shaped place where a plurality of pachinko tables are arranged back to back) in a game hall.
FIG. 2 is an explanatory view exemplifying a laying route of an air duct 10 in the paper sheet transporting apparatus 1 for transporting and recovering paper sheets from a pachinko island in a game hall to a safe in a separate room (collection apparatus). It is. In this case, since the conveying path is a long distance, as described above, the laying path of the blower tube 10 is complicated, and a step, a bend, a slope, or the like that avoids a height difference accompanying an ascending or descending or an obstacle is necessary. Will be provided.

  In FIG. 2, reference numeral 100 denotes a control unit (transport controller), which controls the entire apparatus such as the air flow generation device 30, the feeding device 20, and the recovery device 40. An airflow generator 30 is provided near the control unit 100. The outgoing pipe 11 of the blower pipe 10 extends from the airflow generator 30 into the pachinko island, the return pipe 12 extends through the bent portion, and the vertical riser pipe 13 extends from the return pipe 12 through the bent portion. The airflow generation device 30 may be provided on the recovery device 40 side (not shown), or may be provided on both the control unit 100 side and the recovery device 40 side.

The blower pipe 10 has a horizontal pipe 14 extending from the vertical riser pipe 13 through the bent portion to the space above the ceiling, and the horizontal pipe 14 is extended by a bent pipe 15 while avoiding a building structure such as a pillar. Through a bent tube 16 and a vertical descending tube 17 that are bent at a right angle, the collection device 40 is reached. Reference numeral 18 denotes an exhaust pipe that exhausts an air flow through a separation unit in the recovery device 40. Reference numeral 19 denotes a rack on which the collection device 40 is placed. In the paper sheet transport device 1 shown in FIG. 2, the air flow is not circulated and is discharged from the exhaust pipe 18 to the outside.
Although not shown, it is preferable to provide a booster device that blows out a compressed air flow into the blower tube 10 as an auxiliary device of the airflow generator 30 at an appropriate position of the blower tube 10. The booster device described in Patent Document 4 can be used. The air flow generating device in the present embodiment includes this booster device.

Examples of the bending tube 16 include the following.
U-shaped tube (tube bent into a U-shape: FIG. 10),
90 ° (θ °) bent tube (tube in which the transport conduit is bent 90 ° (θ °) with respect to the bill surface: FIG. 11),
90 ° (θ °) vertical bending tube (tube with 90 ° (θ °) orientation changed without changing the bill surface: FIG. 12),
Xmm offset tube (tube offset (Xmm) parallel to the bill surface: Fig. 13),
Ymm step tube (tube with banknote height changed Ymm without changing banknote surface: Fig. 14),
Straight twisted tubes (tubes with a straight tube twisted around a 90 ° clockwise (counterclockwise) in the direction of travel: Figure 15), and other non-straight tubes.

  In the paper sheet transporting apparatus 1 according to the present embodiment, the position A on the near side of the vertical rising pipe 13 which is an example of the part of the air duct 10 to control the wind speed, the part of the air duct 10 to control the wind speed At the B position on the near side of the bent pipe 15 as an example, and at the C position on the near side of the vertical downcomer pipe 17 as an example of a part of the blower pipe 10 to control the wind speed, and also before the collection device 40, One or a plurality of detectors 25 for detecting bills are provided. It is preferable that the detection unit 25 is provided at a position of the blower tube 10 which is 3 to 4 m before the position for controlling the wind speed.

The detecting unit 25 is formed of an optical sensor having a light emitting unit and a light receiving unit.
FIG. 3 shows an example of the detection unit 25. The detection unit 25 has a sensor including a light-emitting unit and a light-receiving unit attached to both side walls of the blower tube 10 by a mounting bracket 26 so as to sandwich the blower tube 10. The blower tube 10 has a plurality of ribs 10b protruding inward in parallel on both inner walls so as to prevent bills from sticking to the wall surfaces, and the light emitting portion and the light receiving portion are formed of the adjacent ribs 10b and ribs 10b. Light irradiation and light reception are performed so as to be located in between and transmit through the outer wall of the blower tube 10. Note that the detection unit 25 may be a sensor other than an optical sensor.

FIG. 4 shows still another embodiment of the detection unit 25.
In the present embodiment, the light-emitting unit and the light-receiving unit are mounted on both side walls of the connecting pipe 27 that connects the two blowers 10 to each other.
In this case, by using the connecting pipe 27 made of a transparent material, bills can be detected more favorably.

In the detection unit 25, the light is blocked by the bill 2, and the amount of light received by the light receiving unit is reduced, thereby detecting the bill 2. The detection signal from the detection unit 25 is input to the control unit 100.
Each detection unit 25 simply detects that the banknote 2 has passed, and inputs this detection signal to the control unit 100.
Alternatively, the transport speed of the banknote 2 may be calculated by the control unit 100 based on the detection signal of each detection unit 25. In this case, the speed of the banknote 2 at each position may be calculated based on the time difference between the front end portion and the rear end portion of the banknote 2, or two detections may be made at each of the A position, the B position, and the C position. Parts (not shown) are provided at required intervals in the blowing direction of the blower tube 10, and the speed of the bill 2 at each position is calculated based on the time difference of the passage of the bill 2 between the two detection units. Is also good.

Next, FIG. 5 shows a specific example of the collection device 40. As the recovery device 40, a known recovery device as shown in Patent Document 3 can be used.
This will be briefly described below.
As illustrated in FIG. 5, the collection device 40 includes a separation unit 50 that separates the banknote 2 conveyed in the air duct 10 from the airflow, and a deformation unit of the banknote 2 separated from the airflow by the separation unit 50. The correction unit 70 includes a correction unit 70 that corrects the banknote 2b, and a storage unit 90 that stores the banknote 2 separated from the airflow by the separation unit 50 and corrected by the correction unit 70.

  In the separation unit 50, the air flow and the bill 2 are separated, and the air flow is discharged to the outside from the exhaust pipe 18 (FIG. 2). The bill 2 is guided and transported by a transport belt 51 disposed downstream of the separation unit 50, and sent to the correction unit 70 by the rollers 54. The straightening unit 70 has a straightening roller 71 arranged in a zigzag shape, and the bill 2 passes through the straightening roller 71 so that the bending (deformation) is straightened, and the bill 2 becomes a flat bill 2. The mechanism is configured to be sequentially stacked and stored in the storage section 90 by a mechanism.

  A paper sheet detection sensor that detects the banknote 2 conveyed into the collection device 40 is provided at a portion of the collection device 40. For example, the paper sheet detection sensor is provided between the entrance sensor 43 (paper sheet detection sensor) for detecting the banknote 2 and the correction unit 70 and the storage unit 90 before being separated from the airflow by the separation unit 50. And a terminal sensor (not shown) for detecting the bill 2.

  Although not shown in FIG. 5, a paper sheet detection sensor may be further provided between the separation unit 50 of the collection device 40 and the correction unit 70. As described above, since the paper sheet detection sensor is provided between each of the separation unit 50, the correction unit 70, and the storage unit 90, a place where the banknote 2 is jammed in the collection device 40 can be specified.

As described above, since the collection device 40 is a conveyance mechanism including belts and rollers such as the conveyance belt 51, the rollers 54, and the correction rollers 71, the conveyance speed of the banknotes 2 in the air duct 10 and the collection speed A large difference occurs in the transport speed of the banknotes 2 in the device 40, and when the banknotes 2 enter the collection device 40 with the transport speed in the blower tube 10, the banknotes 2 are crushed and cause a jam. In particular, as shown in FIG. 2, when the blower pipe 10 immediately before the collection device 40 is a vertical downcomer pipe 17, the speed difference is large, the banknote 2 is crushed, and the banknote 2 is clogged. It was easy to happen.
On the other hand, when the blower tube 10 immediately before the collection device 40 is a vertically rising portion (not shown), the transport speed of the banknote 2 is reduced, and in some cases, the banknote 2 is in a state close to a stopped state. Yes, this also contributed to the clogging phenomenon.

  In addition, the flow of banknotes in the blower tube 10 is not only in the blower tube 10 in front of the collection device 40 but also in the blower tube 10, in particular, in the portion of the vertical riser tube 13 that rises toward the downstream side, in the downstream side. It changes at the portion of the vertical downcomer 17 descending toward the portion and at the portion of the bent portion 15. That is, since gravity also acts on the portion of the vertical riser 13, the transport speed of the banknotes 2 is reduced, the banknotes 2 are likely to stay, and sometimes the banknotes 2 are clogged. On the other hand, at the portion of the vertical downcomer 17, on the contrary, the transport speed of the banknote 2 becomes too high, and the banknote 2 is deformed or crushed, so that the banknote 2 cannot be smoothly transported. Become. Further, in the bent portion 15, since the pipeline resistance to the banknote 2 increases, the transport speed of the banknote 2 decreases, and the transport of the banknote 2 cannot be performed smoothly due to the stagnation of the banknote 2, and the clogging phenomenon easily occurs.

Therefore, in the present embodiment, first, the blower tubes 10 at the A position, the B position, and the C position, which are located on the near side of the part where the wind speed is to be controlled, such as the vertical riser tube 13, the bent tube 15, the vertical descender tube 17, and the like. Is provided with a detection unit 25 for detecting the bill 2 conveyed in the air duct 10, and when the detection unit 25 detects that the bill 2 has passed through the portion, the control unit 100 generates an airflow. The air flow by the device 30 is changed to control the wind speed in the blower tube 10 to be slow or fast. The position C is also a position before the collection device 40.
The position where the detection unit 25 is provided is not limited to the positions A to C described above.

  In addition, when the banknote 2 passes through the above-described positions and when the banknote 2 is collected in the collection device 40, a display device (not shown) that indicates that the banknote 2 has passed or is collected is controlled by the control unit. Preferably, it is provided near 100. Thereby, when the banknote 2 is jammed, it can be easily determined at which position the jam has occurred. For example, when the display unit displays that the banknote 2 has passed the position A but does not display that the banknote 2 has passed the position B, the banknote 2 may be staying between the position A and the position B. Understand.

The control of the wind speed by the airflow generating device 30 is performed, specifically, in the case where the detection unit 25 detects that the banknote 2 has passed, in the case of the blower tube on the front side of the collection device 40 or in the case of the vertical downcomer 17. In this case, the wind speed in the vertical downcomer 17 or the like is reduced (first embodiment). Is controlled so as to increase the wind speed (second embodiment).
The degree to which the wind speed in the blower tube 10 is slowed or increased may be determined in advance by testing the characteristics of each sheet transporting apparatus 1 and slowing or increasing according to the characteristics.

Alternatively, the control unit 100 calculates the speed of the banknote 2 conveyed through the air duct 10 based on the detection signal input from the detection unit 25, and calculates the airflow according to the calculated speed of the banknote 2. The air flow by the generator 30 is changed to control the air flow in the blower tube 10 to be slow or high.
As described above, the calculation of the speed of the bill 2 in this case is performed such that the speed of the bill 2 at each position is calculated based on a time difference in which the front end and the rear end of the bill 2 conveyed in the air duct 10 pass. (Third Embodiment), two detection units 25 are provided at each of the A position, the B position, and the C position, and each position is determined by a time difference when the bill 2 passes between the two detection units. (4th Embodiment) may be calculated.

FIG. 6 shows a flowchart according to the first embodiment.
In the first embodiment, the blower pipe 10 immediately before the collection device 40 is a vertical downcomer 17 descending toward the collection device 40, or the portion of the blower tube 10 whose wind speed is to be controlled is located downstream. In the case of a downcomer that descends toward the bottom, control is performed to reduce the wind speed in the vertical downcomer 17 and the downcomer.
When a main switch (not shown) of the paper sheet transporting device 1 is turned on, the air flow generating device 30 such as a blower enters a standby state in which the air flow generating device 30 is driven at a required output (step S10). The output value (F) of the airflow generation device 30 at the time of conveyance is input to the control unit 100 (step S20).

When the bill 2 is inserted into the feeding device 20 (Step S30), the airflow generating device 30 is driven with the output value F (Step S40), and the bill 2 is conveyed in the blower tube 10.
When the passage of the banknote 2 is confirmed by the detection unit 25 (step S50), a detection signal is input to the control unit 100, and the control unit 100 controls the airflow generation device 30 by the preset output decrease α. Is reduced, and the airflow generator 30 is driven with the output of F-α (step S60).

  The decrease α of the output is previously obtained on a trial basis, and is input to the control unit 100. That is, the flow condition of the banknotes 2 in the bent tube 15 and the vertical descending tube 17 when the output of the airflow generation device 30 is reduced in advance in a plurality of required steps and the banknotes 2 are transported (the transport speed is Whether the speed is too fast or whether the banknote 2 is not deformed or crushed) is verified at each output stage, and the collection device 40 verifies the degree of clogging of the banknote 2 at each output stage, and the deformation of the banknote 2 It is necessary to obtain a good output decrease α which does not cause collapse or clogging. It is needless to say that the decrease α of the output is obtained for each model of the paper sheet conveying apparatus 1 in which the laying route of the blower tube 10 is different.

  When the required set time has elapsed (Step S70), the output of the airflow generator 30 is returned to F (Step S80). When the collection of the bills by the collection device 40 is completed (Step S90), the output of the airflow generator 30 is changed to F. It returns to the standby state (step S100), and ends if necessary.

FIG. 7 shows a flowchart according to the second embodiment.
In the second embodiment, the blower tube 10 immediately before the collecting device 40 is an ascending tube that rises toward the collecting device 40, or the portion of the blower tube 10 whose wind speed is to be controlled is directed downstream. When the vertical rising pipe 13 rises, control is performed so that the wind speed in the vertical rising pipe 13 and the rising pipe is increased.
This embodiment differs from the first embodiment shown in FIG. 6 only in that in step 60, the output of the airflow generation device 30 is increased by the output increase α and the airflow generation device 30 is driven. Different.
Also in the present embodiment, the increase α of the output is obtained in advance by performing a transport test on a plurality of banknotes 2. That is, the increase α of the output is determined in advance so that the banknote 2 does not stay in the vertical riser tube 13 and has a required transport speed.

  FIG. 8 shows that the control unit 100 calculates the speed of the banknote 2 conveyed through the air duct 10 based on the detection signal input from the detection unit 25, and according to the calculated speed of the banknote 2, A third embodiment in which the airflow generated by the airflow generator 30 is changed to control the wind speed in the blower tube 10 to be slower or faster (a single detection unit 25 in each of the positions A to C is used). 3) shows a flowchart in FIG.

  When a main switch (not shown) of the paper sheet transporting device 1 is turned on, the air flow generating device 30 such as a blower is in a standby state in which the air flow generating device 30 is driven at a required output (step S110). The output value (F) of the airflow generating device 30 at the time of transport is input to the control unit 100 (step S120). Furthermore, the set conveyance speed Sa of the bill 2 is input to the control unit 100 by the operator (step S130).

  The set transport speed Sa is previously determined experimentally for each of the detection positions A, B, and C. That is, the output of the airflow generator 30 is increased or decreased in a plurality of required steps, and a plurality of banknotes 2 are transported at the required plurality of speeds to perform a transport test. In), an average transport speed Sa that does not cause stagnation or jamming of the banknote 2 is obtained in advance, and at the B position and the C position, the banknote 2 does not reach an unnecessarily high speed. An average transport speed Sa that does not cause crushing or collapse is obtained in advance, and, if necessary, an average transport speed at which the banknote 2 is not jammed in the recovery device 40 at a position in front of the collection device 40. Sa is determined in advance, and the control unit 100 inputs the set transport speed Sa for each of the detection units 25 of the A position, the B position, the C position, and the front position of the collection device 40. A. Such a set transport speed Sa is obtained for each model of the paper sheet transport apparatus 1.

When the bill 2 is inserted into the feeding device 20 (Step S140), the airflow generating device 30 is driven with the output value F (Step S150), and the bill 2 is transported in the blower tube 10.
When the passage of the banknote 2 is confirmed by the detection unit 25 (step S160), a detection signal is input to the control unit 100, and the control unit 100 causes the front end and the rear end of the banknote 2 to be conveyed in the air duct 10. The speed Sb of the banknote 2 is calculated based on the time difference between the passages (steps S170 to S190).

Next, the control unit 100 determines whether or not the actual passage speed Sb of the bill 2 when passing through the detection unit 25 is out of the range of Sa ± τ (τ is a predetermined margin value) (step S200). -Step S210).
If Sb> (Sa + τ), the output value F of the airflow generating device 30 is reduced to reduce the transport speed of the banknote 2 (Step S220), and then the banknote 2 is collected by the collection device 40 (Step S230). . When Sb <(Sa−τ), the output value F of the airflow generation device 30 is increased to increase the transport speed of the banknote 2 (Step S240), and then the banknote 2 is collected by the collection device 40 (Step S230). ). In this case, it is preferable that the increase or decrease of the output F in the air flow generation device 30 is also determined in advance according to the magnitude of the bill transport speed Sb.

In step S200, when the actual passage speed Sb of the banknote 2 is within the range of Sa ± τ, the banknote 2 is collected by the collection device 40 while the output F of the airflow generation device 30 remains unchanged (step S230). .
When the banknote 2 is collected, the output of the airflow generation device 30 is returned to the standby state (step S250). Then, the processing ends as necessary.

  FIG. 9 shows that the control unit 100 calculates the speed of the banknote 2 conveyed through the air duct 10 based on the detection signal input from the detection unit 25, and according to the calculated speed of the banknote 2, A fourth embodiment in which the airflow generated by the airflow generation device 30 is changed to control the wind speed in the blower tube 10 to be slower or faster (the detection unit 25 in each of the positions A to C (Part) is shown.

In this embodiment, in the control unit 100, when the banknote 2 is detected by the upstream detection unit 25 in step S160, the conveyance speed measurement of the banknote is started in step S165, and the banknote is detected by the downstream detection unit 25 in step S170. After detecting 2, the transport speed of the banknote 2 is calculated based on the detection time difference between the two detection units, and the transport speed Sb of the banknote 2 is obtained (Step S180, Step S190).
Other steps are the same as the steps in FIG.

In each of the above embodiments, the detection unit 25 is set at the position A (vertical rising pipe 13), the position B (bending pipe 15), and the position C (vertical descending pipe 17) of the part where the wind speed of the blower tube 10 is to be controlled. Provided. When there is only one banknote 2 in the air duct 10, the above-described control may be performed at each of the above positions in order.
When a plurality of banknotes 2 are present in the blower tube 10, the above-described control may be performed by determining a priority order among the A position, the B position, and the C position in advance. For example, when the position A is given the highest priority, when the banknote 2 is conveyed to the position A and the position B at the same time, the control at the position A is performed with priority to the position B.

In the case of the position A, that is, in the case of the vertical riser tube 13, there is a possibility that the banknote 2 may stagnate, so that increasing the wind speed has priority. In this case, the wind speed may increase more than necessary at other positions. The priority is determined based on the criteria, but is determined on a case-by-case basis according to the importance.
Particularly, as described above, the banknotes 2 are likely to be clogged in the collection device 40 due to the difference in the transport mechanism, and maintenance when clogging occurs is the most troublesome. Therefore, the above-described control before the collection device 40 is performed. Is preferentially performed over other parts.

  In the above-described embodiment, the detecting unit 25 is provided at the position A (vertical rising pipe 13), the position B (bending pipe 15), and the position C (vertical descending pipe 17). It may be provided only at one place.

1 paper sheet transport device 2 banknotes (paper sheets)
2a Flat portion 2b Deformation portion 10 Blow tube 10a Bent tube 10b Rib 11 Outgoing tube 12 Incoming tube 13 Vertical rising tube 14 Horizontal tube 15 Bending tube 16 Bending tube 17 Vertical descending tube 18 Exhaust tube 19 Rack 20 Feeding device 21 Banknote recognition device 22 Bending device 25 Detector 26 Mounting bracket 27 Connecting pipe 30 Air flow generator 31 Outgoing pipe 32 Connecting pipe 33 Return pipe 40 Recovery device 43 Inlet sensor 49 Housing 50 Separation unit 51 Transport belt 54 Roller 70 Straightening unit 71 Straightening roller 90 Unit 100 control unit

Claims (14)

A system for transporting paper sheets by an air flow, a blower tube for guiding the air flow in the tube and transporting the paper sheets, a feeding device for feeding the paper sheets into the blower tube, and A paper sheet transport system comprising: an air flow generation device that generates an air flow; a control unit that controls the air flow generation device; and a collection device that is provided at the end of the blower tube and that collects paper sheets. At
A detection unit is provided in the blower tube or the collection device, and when the detection unit detects that a sheet has passed, the control unit controls the airflow generation device to reduce a wind speed in the blower tube. A paper sheet transport system characterized by being changed.   A part of the recovery device, a part of a downcomer descending downstream, a part of an ascending pipe ascending downstream, and a part of a bent tube that bends, which are parts where the wind speed of the blower tube is to be controlled. The sheet transport system according to claim 1, wherein the detection unit that detects the sheet transported in the air duct is provided at at least one of the locations or in the vicinity thereof.   3. The paper sheet transport system according to claim 1, wherein the detection unit is provided on a front side of a part of the blower tube where the wind speed is to be controlled. 4.   The paper according to claim 3, wherein when the blower tube in front of the collection device is a downcomer descending toward the collection device, control is performed to reduce the wind speed in the downcomer. Leaf transport system.   The paper according to claim 3, wherein when the blower tube in front of the recovery device is a riser tube rising toward the recovery device, the wind speed in the riser tube is controlled to be increased. Leaf transport system.   4. The method according to claim 3, wherein, when the blower tube at the portion where the wind speed is to be controlled is a downcomer that descends downstream, control is performed to reduce the wind speed in the downcomer. 5. Paper transport system.   4. The method according to claim 3, wherein, when the blower tube of the part where the wind speed is to be controlled is a riser tube rising toward the downstream side, control is performed to increase the wind speed in the riser tube. 5. Paper transport system.   The control unit calculates the speed of the paper sheet conveyed in the air duct based on the detection signal input from the detection unit, and calculates the air flow according to the calculated speed of the paper sheet. The paper sheet transport system according to any one of claims 1 to 7, wherein the air flow by the generator is changed to perform control to reduce or increase the wind speed in the blower tube.   9. The paper sheet transport according to claim 8, wherein the control unit calculates the speed of the paper sheet based on a time difference between a front end and a rear end of the paper conveyed in the air duct. system.   The detection unit is provided at two locations at a required interval at a position where the wind speed of the blower tube is to be controlled, and the control unit is configured to control a paper sheet based on a time difference between sheets passing between the two detection units. 9. The sheet transport system according to claim 8, wherein the speed of the sheet is calculated.   The paper sheet transport system according to any one of claims 1 to 10, wherein the air flow generating device includes a booster device that sends compressed air into the blower tube.   The detection unit is provided at a plurality of locations in the air duct, including the front side of the collection device, and the control unit detects the paper sheet by the detection unit provided on the front side of the collection device. The paper sheet according to any one of claims 1 to 11, wherein control is performed to reduce or increase the wind speed in the blower tube on the front side of the collection device, prior to other parts. Transport system.   The detection unit is provided at least in the blower tube, a front side of a downcomer that descends toward the downstream side, a front side of a riser that rises toward the downstream side, and in the collection device, and the detection unit includes: 13. A paper sheet according to claim 1, further comprising a display unit for displaying that the paper sheet has passed when it is detected that the paper sheet has passed. Kind transport system.   The feeding device bends a sheet to form a deformed portion and sends the deformed portion into the blower tube, and the sheet is conveyed through the blower tube by receiving wind pressure from the deformed portion. The sheet transport system according to any one of claims 1 to 13, further comprising a straightening unit including a roller group for straightening the deformed portion.

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