JP4274139B2 - Media processing device - Google Patents

Description

  The present invention relates to a medium processing apparatus that sandwiches and conveys a medium by a driving-side conveying unit and a driven-side conveying unit that is in contact with the driving-side conveying unit and reads / writes data on the medium by a magnetic head or the like.

In this type of medium processing apparatus, if the conveyance speed of the medium fluctuates due to slip or the like, a read / write failure may occur due to a magnetic head or the like, so a structure for conveying the medium at a constant conveyance speed Is required. Conventionally, it has a take-in driving roller and a pressing roller in contact with it, a main driving roller and a pressing roller in contact with the take-in driving roller across the card conveyance path, and the pressing force of the pressing roller in contact with the main driving roller is set in advance. There is one that reduces the fluctuation speed at the moment when the medium comes out of the take-in drive roller by using the main drive roller and the press roller that comes into contact with the take-up drive roller (for example, patent) Reference 1).
Japanese Patent Laid-Open No. 7-121979 (paragraph “0012”, FIG. 1)

  In the above-described conventional medium processing apparatus, although a countermeasure against slip at the initial stage of installation of the apparatus is taken, no countermeasure against slip when used for a long period of time is taken. For this reason, once a slip occurs between the medium and the roller due to wear of the roller due to change over time, a decrease in the pressing force of the pressing roller, or dirt adhering to the medium, this could not be prevented. . For this reason, when a slip occurs, maintenance such as parts replacement must be urgently performed, which not only increases the burden on the administrator who manages the device, but also reduces the service to the user. was there.

  The present invention has been made in view of the above-described conventional problems. The object of the present invention is to reduce the burden on the administrator who manages the apparatus by automatically detecting and recovering when a slip occurs. And improving the service to users.

In order to achieve this object, the invention according to claim 1 is in contact with a medium insertion slot into which a medium is inserted, a drive side conveyance means for conveying the medium inserted from the medium insertion slot, and the drive side conveyance means. A driven side conveying means, a medium processing means for processing a medium conveyed by the driving side conveying means and the driven side conveying means, and a plurality of pressing means for pressing the driven side conveying means against the driving side conveying means. A slip detecting means for detecting a slip of the medium conveyed by the driving side conveying means and the driven side conveying means, and simultaneously detecting the slips detected by the slip detecting means to increase the pressing force by the plurality of pressing means. And a pressing force increasing means.

  According to the present invention, when slip occurs, this is detected by the slip detection means, and on the basis of the detection result, the pressing force by the driven side conveying means on the driving side conveying means can be instantaneously increased by the pressing force increasing means. it can. Therefore, since it is possible to automatically detect and recover slips that occur due to changes over time, etc., urgent maintenance is unnecessary, so the burden on the administrator who manages the device can be reduced, It is also possible to improve the service to users.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of a medium processing apparatus according to the present invention, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a sectional view taken along the line II-II in FIG. 4 is a block diagram of the medium processing apparatus according to the present invention, and FIG. 5 is a flowchart for explaining the operation.

  The medium processing apparatus generally indicated by reference numeral 1 in FIG. 2 includes a lower case 2 and an upper case 3, and a medium conveyance path 6 is formed by an upper plate 4 and a bottom plate 5 of the upper case 3 facing each other. A medium insertion slot 7 into which a magnetic card 8 as a medium is inserted is provided at the end of the medium transport path 6 in the arrow B direction. In FIG. 1, reference numeral 10 denotes a motor provided in the lower case 2 for driving in the forward and reverse directions. A worm 11 is attached to the output shaft of the motor 10.

  A drive shaft 12 is rotatably supported between both side plates 13 and 13 (see FIG. 2) of the lower case 2, and has an end portion protruding from one side plate 13 with a drive roller 14 mounted on the shaft. A worm wheel 15 that meshes with the worm 11 is attached to the shaft. In FIG. 2, reference numeral 16 denotes a driven roller rotatably supported by a shaft 17 horizontally mounted on the lower case 2, and the upper plate of the lower case 2 is interposed between the driven roller 16 and the driving roller 14. A driving belt 19 as a driving side conveying means extending in the direction of the arrow AB facing the medium conveying path 6 from a window 18 provided in 4 is stretched. 20 is a tension roller that applies tension to the drive belt 19, 21 is an attachment roller that attaches the drive belt 19 to a pinch roller 24 to be described later, and 22 is a magnetic head as a medium processing means for reading and writing data on the magnetic card 8. It is.

  In such a configuration, when the motor 10 is driven in the forward direction, the drive roller 14 rotates counterclockwise in FIG. 2 via the worm 11, the worm wheel 15, and the drive shaft 12. Travel in the direction. On the other hand, when the motor 10 is driven in the opposite direction, the drive roller 14 rotates in the clockwise direction in FIG. 2 via the worm 11, the worm wheel 15, and the drive shaft 12, and thus the drive belt 19 travels in the direction of arrow B.

  In FIG. 2, reference numerals 23, 24, and 25 denote three pinch rollers as driven side conveying means facing the driven roller 16, the contact roller 21, and the driving roller 14, and are attached to the bottom plate 5 of the upper case 3. It faces the medium conveyance path 6 from the provided window 3a. These pinch rollers 23, 24, 25 are rotatably supported by shafts 26, 27, 28 that are horizontally mounted on a holder (not shown) that is swingably supported by the upper case 3. The pinch rollers 23, 24, 25 are configured to be freely contacted and separated from the driven rollers 16, the attachment rollers 21, and the drive rollers 14 by swinging of the holders. The torsion coil springs 32, 33, 34 serving as pressing means wound around 30, 31 are urged in the direction pressed against the drive belt 19 by the torsional moments. A driven belt 35 that is in contact with the drive belt 19 is stretched between the pinch roller 24 and the pinch roller 25.

  Next, a pressing force increasing means for increasing the pressing force by the pinch rollers 23, 24, 25 on the drive belt 19 which is a feature of the present invention will be described with reference to FIGS. 1 includes a solenoid 41 that is a drive source, a swing lever 42 that swings when the solenoid 41 is driven, and interlocking with the swing of the swing lever 42. It is generally constituted by a moving plate 43 that moves in the direction of arrows A-B. The solenoid 41 is provided in the upper case 3, and a pin 45 planted at one end of the swing lever 42 is pivotally attached to the tip of the rod 44 that can be moved forward and backward.

  The swing lever 42 is supported by the upper case 3 through a shaft 46 so that the swing lever 42 can swing freely, and a small shaft 47 planted at the other end is in a long hole 48 provided in the moving plate 43. Is in attendance. The moving plate 43 is supported by the upper case 3 through a locking member (not shown) so as to be movable in the direction of the arrow AB, and on the upper surface of the moving plate 43, as shown in FIG. Three protrusions 50, 51, 52 are provided in the B direction. Three small holes 53, 54, 55 are provided adjacent to each of the protrusions 50, 51, 52, and one end portions 32 a, 33 a, 34 a of the torsion coil springs 32, 33, 34 are formed in the small holes 53. , 54, 55 through the projections 50, 51, 52. Further, the other end portions 32b, 33b, 34b of the torsion coil springs 32, 33, 34 are engaged with the shafts 26, 27, 28. As described above, the torsion coil springs 32, 33, 34 are twisted. The pinch rollers 23, 24 and 25 are pressed against the drive belt 19 by the moment.

  In such a configuration, by driving the solenoid 41 and retracting the rod 44, the swing lever 42 swings counterclockwise about the shaft 46 in FIG. To do. As the moving plate 43 moves in the direction of arrow A, as shown in FIG. 3, the protrusions 50, 51, and 52 also move in the direction of arrow A, so one end 32a that is locked to the protrusions 50, 51, and 52 is used. , 33a, 34a move in the direction in which the torsion coil springs 32, 33, 34 are wound. Accordingly, the torsional moments of the torsion coil springs 32, 33, and 34 increase, so that the pressing force applied to the drive belt 19 by the pinch rollers 23, 24, and 25 increases.

  Next, the configuration of the medium processing apparatus according to the present invention will be described with reference to FIG. In FIG. 1, the medium processing apparatus 1 includes a CPU 60, a ROM 61, a RAM 62, an I / O 63, and a timer circuit 64. Among these, the I / O 63 includes a motor control 65 for driving and controlling the motor 10, a sensor buffer 67 for storing detection information of the sensor 66 for detecting the magnetic card 8 conveyed in the medium conveyance path 6, and the magnetic head 22. A read / write circuit 68 that reads / writes data on the magnetic card 8, a solenoid drive circuit 69 that drives the solenoid 41, and an LED 70 that functions as a notification unit that lights when the solenoid 41 is driven are connected.

  Here, the conveyance speed of the magnetic card 8 by the sensor 66, that is, the time required for the magnetic card 8 to pass between the two sensors 66, 66 (this time is the time when the magnetic card 8 slips and is conveyed). (Including the time when the operation is stopped) is compared with a set time set in advance by the timer circuit 64. If the set time is longer than the set time, the CPU 60 uses a speed slower than the set transfer speed of the magnetic card 8. Judged as being transported and slipping. The sensor 66, the timer circuit 64, and the CPU 60 constitute slip detection means for detecting slip. When the slip is detected, the CPU 60 drives the solenoid drive circuit 69 to move the rod 44 of the solenoid 41 backward.

  Next, an operation for processing a medium in the medium processing apparatus having such a configuration will be described with reference to FIG. When the magnetic card 8 is inserted into the medium conveyance path 6 from the card insertion slot 7, the sensor 66 detects the magnetic card 8, and the motor 10 is driven in the forward direction. Therefore, the magnetic card 8 is driven by the drive belt 19 and the pinch roller. 23, and conveyance is started in the direction of arrow A (S1). When the magnetic card 8 is conveyed to the magnetic head 22, the data on the magnetic card 8 is read / written by the magnetic head 22 in S2.

  In S3, the conveyance time of the magnetic card 8 detected by the sensor 66 is compared with the set time preset by the timer circuit 64, and if it is within the set time, no slip is detected, and the process proceeds to S4. If the result of reading / writing by the magnetic head 22 is normal in S4, the motor 10 is stopped in S5 and the conveyance of the magnetic card 8 is stopped, thereby completing the normal end in S6.

  On the other hand, if the transport time of the magnetic card 8 detected by the sensor 66 is longer than the set time preset by the timer circuit 64 in S3, it is determined as slip, so the drive of the motor 10 is stopped and the card is transported in S7. To stop. If the result read / written by the magnetic head 22 in S4 is not normal, the driving of the motor 10 is stopped and the card transport is stopped in S7.

  Next, since the retry is the first time, the maximum retry number N (N = 3 in the present embodiment) set in advance in S8 has not been reached, so the process proceeds to S9. In S9, since the retry is the first time, the process proceeds to S10, and it is determined whether the slip of the magnetic card 8 is detected in S3 described above in S10. If slip is detected, in S11, the solenoid drive circuit 69 is driven and the rod 44 of the solenoid 41 is moved backward to increase the pressing force of the pinch rollers 23, 24, 25 on the drive belt 19, and the slip After turning on the LED 70 for informing that the occurrence of the error has occurred, the process proceeds to S12. On the other hand, if no slip of the magnetic card 8 is detected in S10, the process proceeds to S12 as it is.

  In S12, the magnetic card 8 is transported to the start position. In S1, the transport of the magnetic card 8 is started again. In S2, the magnetic head 22 reads / writes data on the magnetic card 8. When the pressing force by the pinch rollers 23, 24, and 25 on the drive belt 19 in S11 is increased, if no slip is detected in S3, the process proceeds to S4. If the reading / writing by the magnetic head 22 is normal in S4, the driving of the motor 10 is stopped and the conveyance of the magnetic card 8 is stopped in S5, thereby completing the normal end in S6. When the operation ends normally in S6, the lit LED 70 is turned off, the drive of the solenoid drive circuit 69 is released, and the rod 44 moves forward by the return force of the solenoid 41 to pinch rollers 23, 24, and 25 with respect to the drive belt 19. The pressing force by returns to the normal state.

  In this way, when the magnetic card 8 slips, this is detected by the slip detection means, and based on the detection result, the pressing force by the pinch rollers 23, 24, 25 on the drive belt 19 is instantaneously applied by the pressing force increasing means 40. Can be increased. Therefore, since the slip of the magnetic card 8 due to a change with time or the like can be automatically recovered, urgent maintenance is unnecessary. Therefore, the burden on the administrator who manages the apparatus can be reduced, and the service to the user can be improved.

  On the other hand, if the slip of the magnetic card 8 is detected in S3 or if the result of reading / writing by the magnetic head 22 is not normal in S4, the driving of the motor 10 is stopped and the card transport is stopped in S7. Here, since the retry is the second time, since the maximum number of retries N has not been reached in S8, the process proceeds to S9. In S9, since the retry is not the first time but the second time, the process proceeds to S12, the magnetic card 8 is transported to the start position in S12, and the transport of the magnetic card 8 is started again in S1.

  Next, in S2, the data on the magnetic card 8 is read / written by the magnetic head 22. If the slip of the magnetic card 8 is detected in S3, or if the result of reading / writing by the magnetic head 22 is not normal in S4, the driving of the motor 10 is stopped and the card transport is stopped in S7. Here, since the retry is the third time, the maximum number of retries N has been reached in S8, so that the process proceeds to S13 and ends abnormally, the lit LED 70 is turned off, and the drive of the solenoid drive circuit 69 is released. Then, the rod 44 of the solenoid 41 is advanced to return the pressing force of the pinch rollers 23, 24, 25 to the drive belt 19 to the normal state.

  In the present embodiment, the pinch roller 23 and the driven belt 35 are used as the driven side conveying means, but the pinch rollers 24 and 25 may be directly brought into contact with the drive belt 19 without providing the driven belt 35. Alternatively, a driven belt may be stretched between the pinch roller 23 and the pinch roller 25 so that the driven belt 19 contacts the entire drive belt 19. Further, after detecting the slip of the magnetic card 8 and driving the solenoid 41 to increase the pressing force of the pinch rollers 23, 24, 25 against the drive belt 19, the pressing is performed at the normal end in S6 and the abnormal end in S13. Although the pressure is returned to the normal state, once the slip of the magnetic card 8 is detected, the state where the pressing force is increased may be maintained by keeping the solenoid 41 driven. In the present embodiment, the pressing force increased by the pressing force increasing means 40 is constant, but the pressing force can be retried by using a stepping motor and a cam mechanism instead of the solenoid 41. It is possible to increase the number of times. In this case, when the pressing force becomes maximum, the LED 70 may be kept on. Although the number of retries N is set to 3, it may be performed at least once. In the present embodiment, the medium to be transported is a magnetic card. However, the present invention can also be applied to transport of a contact type IC card or a non-contact type IC card. Further, as a result of performing the tension increase in S11, when the slip is not detected in S3 for a certain number of times, the next card may be kept in the tension-up state.

1 is a plan view of a medium processing apparatus according to the present invention. It is the II-II sectional view taken on the line in FIG. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 showing a state in which the pressing force of the pinch roller is increased in the medium processing apparatus according to the present invention. 1 is a block diagram of a medium processing apparatus according to the present invention. 6 is a flowchart for explaining an operation in the medium processing apparatus according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Medium processing apparatus, 6 ... Medium conveyance path, 7 ... Card insertion slot, 8 ... Magnetic card (medium), 10 ... Motor, 14 ... Drive roller, 19 ... Drive belt (drive side conveyance means), 22 ... Magnetic head (Medium processing means), 23, 24, 25... Pinch roller (driven side conveying means), 32, 33, 34... Torsion coil spring (pressing means), 40. Lever, 43 ... moving plate, 64 ... timer circuit, 66 ... sensor, 70 ... LED.

Claims (2)

A medium insertion slot for inserting a medium;
A driving side conveying means for conveying the medium inserted from the medium insertion port, and a driven side conveying means in contact with the driving side conveying means;
Medium processing means for processing a medium conveyed by the driving side conveying means and the driven side conveying means;
A plurality of pressing means for pressing the driven side conveying means against the driving side conveying means;
Slip detecting means for detecting slip of the medium conveyed by the driving side conveying means and the driven side conveying means;
A medium processing apparatus , comprising: a pressing force increasing means for simultaneously increasing the pressing force by the plurality of pressing means by detecting slip by the slip detecting means.   The pressing force increasing means includes a driving portion, a swinging lever that swings when the driving portion is driven, and a moving plate that includes a locking portion that interlocks with the swinging lever and locks the plurality of pressing means. The medium processing apparatus according to claim 1, comprising:

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