JP2015507585A - Paper sheet transport device - Google Patents

Abstract

In the present invention, the adjusting screw contact base member may expand or contract depending on the environmental temperature so as to reduce or compensate for the expansion or contraction effect depending on the environmental temperature of the feed roller resin and the gate roller resin. It has a temperature displacement compensating resin portion that shrinks.

Description

  The present invention relates to a paper sheet transport apparatus that transports paper sheets.

  A paper sheet transporting apparatus that transports paper sheets is widely used by being incorporated in various paper sheet processing apparatuses. For example, Japanese Patent Laid-Open Publication No. 7-137870 discloses a bill feeding device used for an automatic teller machine.

  In the banknote feeding device, an adjustment screw is provided at the lower end portion of the gate holder that holds the shaft of the gate roller so that the distance between the gate roller and the first feed roller or the overlap amount can be finely adjusted.

  Usually, the surface of the feed roller has a feed roller resin that expands or contracts depending on the environmental temperature. Similarly, the surface of the gate roller also has a gate roller resin that expands or contracts depending on the environmental temperature. Therefore, when the environmental temperature changes, the gap G between the feed roller and the gate roller may undesirably change due to the expansion or contraction of the feed roller resin and the gate roller resin. Therefore, it is necessary to manually adjust the adjustment screw every time a temperature change occurs. This adjustment work is a burden in some cases.

  The present invention has been made in consideration of such points, and automatically reduces or compensates for the effects of expansion or contraction of the feed roller resin and the gate roller resin when the environmental temperature changes. An object of the present invention is to provide a paper sheet conveying apparatus capable of performing the above.

  According to the knowledge of the present inventors, in the adjustment screw contact base member, which has been made entirely of metal, the influence of expansion or contraction depending on the environmental temperature of the feed roller resin and the gate roller resin can be reduced. The object of the present invention can be achieved by positively providing a temperature displacement compensating resin portion designed to compensate.

  That is, the present invention is a paper sheet transport device that transports paper sheets one by one, and is provided so as to be opposed to each other, and a feed formed with a gap formed therebetween as a paper sheet transport path A roller and a gate roller; a gate roller shaft that supports the gate roller; a feed roller shaft that supports the feed roller; a bearing that rotatably supports the gate roller shaft on one side; A gate arm that is fixed to the gate arm shaft and is rotated with the rotation of the gate arm shaft so that the gate roller shaft is relatively close to or separated from the feed roller shaft; By adjusting the rotation position, the position of the gate roller shaft relative to the feed roller shaft is adjusted, and the feed roller and the gate roller are adjusted. An adjustment mechanism that adjusts the gap between the adjustment arm, and the adjustment mechanism is fixed to the gate arm shaft, the adjustment screw contact base member fixed to the housing, the gate arm shaft The adjusting screw contact base is screwed into a screw hole provided in the auxiliary gate arm to be rotated, is in contact with the adjustment screw contact base member, and is adjusted in the screwing position with the screw hole. An adjustment screw that adjusts the relative position of the gate arm with respect to a member, and the surface of the feed roller has a feed roller resin that expands or contracts depending on an environmental temperature, and the gate The roller surface has a gate roller resin that expands or contracts depending on the environmental temperature, and the adjustment screw contact base member includes the feed roller resin and the gate roller resin. A sheet having a temperature displacement compensating resin portion that expands or contracts depending on the environmental temperature so as to reduce or compensate for the influence of expansion or contraction that depends on the environmental temperature of the resin for printing It is a transport device.

  According to the present invention, the adjusting screw contact base member expands depending on the environmental temperature so as to reduce or compensate for the expansion or contraction effect depending on the environmental temperature of the feed roller resin and the gate roller resin. In addition, since the temperature displacement compensating resin portion is contracted, the influence of expansion or contraction of the feed roller resin and the gate roller resin can be automatically reduced or compensated when the environmental temperature changes. it can.

  However, if the entire adjustment screw abutting base member is made of temperature displacement compensating resin, damage will occur at an early stage in the area where the adjustment screw abuts. Therefore, it is preferable that the adjustment screw contact base member has a metal plate portion at least at a portion in contact with the adjustment screw.

  The distance from the gate arm shaft to the gate roller shaft is preferably longer than the distance from the gate arm shaft to the contact portion between the adjustment screw contact base member and the adjustment screw. In this case, even if the change due to expansion or contraction of the temperature displacement compensating resin portion is small, the gap between the feed roller and the gate roller can be greatly changed. For example, the ratio of the distance from the gate arm axis to the gate roller axis and the distance from the gate arm axis to the contact portion between the adjustment screw contact base member and the adjustment screw is preferably 5: 3.

  As a specific range of physical property values, the linear expansion coefficient of the resin for the feed roller is 0.000040 to 0.000050, preferably 0.000045 in an average value, and the linear expansion coefficient of the resin for the gate roller is The average value is 0.00017 to 0.00027, preferably 0.00022, and the linear expansion coefficient of the temperature displacement compensating resin portion is 0.00030 to 0.00040, preferably 0.00035, in the average value. is there.

  In the case of such physical property values, when the feed roller resin has a thickness of 16 mm in the average value and the gate roller resin has a thickness of 10 mm in the average value, With respect to the temperature change + 1 °, the expansion amount of the feed roller resin is 0.000045 × 16 = 0.00072 (mm), and the expansion amount of the gate roller resin is 0.00022 × 10 = 0.0002 (mm) Therefore, the total expansion amount (gap reduction amount) is 0.00292 (mm), and it is desirable to retract the gate roller shaft (separate from the feed roller shaft) by the expansion amount. At this time, if the ratio of the distance from the gate arm shaft to the gate roller shaft and the distance from the gate arm shaft to the contact portion between the adjustment screw contact base member and the adjustment screw is 5: 3, the insulator According to the above principle, it is preferable that the adjusting screw contact base member expands by 0.00292 × 3/5 = 0.17552 (mm) with respect to a temperature change of + 1 °. If the linear expansion coefficient of the temperature displacement compensating resin portion is 0.00035, it is preferable that the temperature displacement compensating resin portion has a thickness of 0.001752 / 0.00035 = 5 (mm). become.

  On the other hand, for a temperature change of −1 °, the shrinkage amount of the feed roller resin is 0.000045 × 16 = 0.00072 (mm), and the shrinkage amount of the gate roller resin is 0.00022 × 10 = 0. .0022 (mm), the total contraction amount (gap increase amount) is 0.00292 (mm), and it is desirable that the gate roller shaft be brought close to the feed roller shaft by the contraction amount. At this time, if the ratio of the distance from the gate arm shaft to the gate roller shaft and the distance from the gate arm shaft to the contact portion between the adjustment screw contact base member and the adjustment screw is 5: 3, the insulator According to the above principle, it is preferable that the adjusting screw contact base member contracts by 0.00292 × 3/5 = 0.17552 (mm) with respect to a temperature change of −1 °. If the linear expansion coefficient of the temperature displacement compensating resin portion is 0.00035, the temperature displacement compensating resin portion will eventually have a thickness of 0.001752 / 0.00035 = 5 (mm). Would be preferable.

It is a front view of the bill counter by embodiment of this utility model. It is a side view when the banknote counter shown in FIG. 1 is seen from the right side. It is a block diagram which shows the internal structure of the banknote counter shown in FIG. It is a top view when the internal structure of the banknote counter shown in FIG. 3 is seen from upper direction. It is a functional block diagram of the banknote counter shown in FIG. It is a perspective view of the banknote conveyance apparatus by this Embodiment. It is a front view of the banknote conveying apparatus shown in FIG. It is a side view of the banknote conveying apparatus shown in FIG. It is a side view which shows the base member for adjustment screw contact of the banknote conveying apparatus of FIG. 6, an adjustment screw, and a part of auxiliary gate arm. It is a rear view which shows the base member for adjustment screw contact of the banknote conveying apparatus of FIG.

  Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, a bill counter that counts bills is described as an example of a paper sheet counter including a paper sheet transport device that transports paper sheets one by one. 1 to 5 are diagrams showing a banknote counter according to the present embodiment. Among these, FIG. 1 is a front view of the banknote counter according to the present embodiment, and FIG. 2 is a side view of the banknote counter shown in FIG. 1 when viewed from the right side. 3 is a block diagram showing the internal configuration of the banknote counter shown in FIG. 1 and the like, and FIG. 4 is a top view when the internal configuration of the banknote counter shown in FIG. 3 is viewed from above. FIG. 5 is a functional block diagram of the bill counter shown in FIG.

  As shown in FIGS. 1 and 3, the banknote counter 10 according to the present embodiment includes a substantially rectangular parallelepiped casing 11, an input section 12 for inserting banknotes into the casing 11, and an input section 12. The conveyance part 14 for conveying the banknote thrown into the housing | casing 11, the identification part 20 for identifying the banknote conveyed by the conveyance part 14, and the banknote identified by the identification part 20 are integrated | stacked. And an accumulation unit 30.

  A plurality of banknotes to be counted by the banknote counter 10 are placed on the input unit 12 in an accumulated state by the operator. Specifically, as shown in FIG. 1 and FIG. 2, a transparent or translucent guide member 12 a is provided in the insertion portion 12, and the operator is 100 yuan along the guide member 12 a. A bill can be inserted into the insertion unit 12. Further, as shown in FIG. 3, the feeding unit 12 is provided with a feeding mechanism 13, and a plurality of banknotes placed in a stacked state on the feeding unit 12 are placed one by one in the housing 11 by the feeding mechanism 13. It comes to be drawn out. The feeding mechanism 13 includes a kicker roller 13a for kicking out a lowermost banknote among a plurality of banknotes placed on the input unit 12, and a banknote transport apparatus 50 as a paper sheet transport apparatus that is a feature of the present invention. Have. The banknote transport device 50 is provided opposite to the feed roller 111 that feeds the banknote kicked out by the kicker roller 13 a into the housing 11 and the feed roller 111, and forms a gate portion with the feed roller 111. And a gate roller (reverse roller) 112. Further details of the bill transport device 50 will be described later. The bills fed into the housing 11 by the feeding mechanism 13 are transported one by one by the transport unit 14. The conveyance unit 14 is provided with a plurality of conveyance paths 14a, 14b, 14c, 14d arranged in series, and banknotes are conveyed along the order of the conveyance paths 14a, 14b, 14c, 14d. Yes. Details of the configuration of each of the transport paths 14a, 14b, 14c, and 14d will be described later.

  The transport unit 14 is provided with an identification unit 20 for identifying a banknote transported by the transport unit 14. The discriminating unit 20 discriminates the denomination, banknote, authenticity, correctness, etc. of banknotes. The configuration of the identification unit 20 will be described in detail with reference to FIGS. 3 and 4.

  The identification unit 20 includes a pair of line sensors 21 and 22 arranged with a third conveyance path 14c (described later) of the conveyance unit 14 in between, and a downstream side of the pair of line sensors 21 and 22 in the bill conveyance direction. It has an ultraviolet sensor 23 provided at a location and a magnetic sensor 24 provided at a location upstream of the pair of line sensors 21 and 22 in the banknote transport direction.

  More specifically, as shown in FIG. 4, the pair of line sensors 21, 22 extends in the width direction of the bills conveyed by the conveyance unit 14 (that is, extends in a direction orthogonal to the paper surface of FIG. 3). The line sensors 21 and 22 are provided with a plurality of light emitting elements and a plurality of light receiving elements, respectively. And the light emitted from the light emitting element of one line sensor (for example, line sensor 21) permeate | transmits the banknote between a pair of line sensors 21 and 22, and the other line sensor (for example, line sensor 22). The light emitted from the light emitting element of one of the line sensors (for example, the line sensor 21) is reflected by a bill between the pair of line sensors 21 and 22, and the other Is received by the light receiving element of the line sensor 21, information related to the surface image of the banknote can be obtained.

  As shown in FIGS. 3 and 4, the ultraviolet sensor 23 provided at a location downstream of the pair of line sensors 21 and 22 in the banknote transport direction includes a light emitting element and a light receiving element. The ultraviolet light emitted from the light emitting element of the ultraviolet sensor 23 is reflected by the banknote on the fourth transport path 14d (described later) of the transport unit 14 and received by the light receiving element of the ultraviolet sensor 23, whereby the fluorescence of the banknote. Information related to the reaction can be obtained.

  As shown in FIGS. 3 and 4, a magnetic sensor 24 is provided at a location upstream of the pair of line sensors 21 and 22 in the banknote transport direction, and faces the magnetic sensor 24. A receiving roller 25 is provided. And the banknote conveyed by the conveyance part 14 passes the clearance gap between the magnetic sensor 24 and the receiving roller 25. FIG. A magnetic head is provided at the tip of the magnetic sensor 24, and this ink is detected by the magnetic head when the ink on the pattern of the bill has magnetism. A large number of hairs such as nylon are implanted on the outer peripheral surface of the receiving roller 25, and the bills are pressed against the magnetic head of the magnetic sensor 24 by these hairs.

  As shown in FIG. 4, timing sensors 26 and 27 are provided at the inlet portion and the outlet portion of the identification unit 20, respectively. When the leading edge of the banknote is detected by the timing sensor 26, it is determined that the banknote has entered the identification unit 20, and when the trailing edge of the banknote is detected by the timing sensor 27, the banknote is detected from the identification unit 20. It is judged that it came out.

  As described above, the banknotes identified by the identifying unit 20 are sent to the stacking unit 30 and are stacked on the stacking unit 30. The stacking unit 30 stacks banknotes in a state that can be visually recognized from the outside. Further, the stacking unit 30 is provided with an opening for taking out banknotes from the stacking unit 30. Moreover, as shown in FIG. 1 etc., the number of stacking units 30 is one. The stacking unit 30 stacks banknotes in the order identified by the identifying unit 20.

  As shown in FIGS. 3 and 4, the stacking unit 30 is provided with a pair of impellers 32. The impeller 32 rotates about the shaft 32a in the counterclockwise direction in FIG. It is like that. Further, the impeller 32 is provided with a plurality of blades 32b extending outward from the outer peripheral surface in the direction opposite to the rotation direction (clockwise direction in FIG. 3). These blades 32b are provided at equal intervals on the outer peripheral surface of the impeller 32 as shown in FIG. The impeller 32 is always rotated in the counterclockwise direction in FIG. 3 by a drive unit 32c described later during the operation of the bill counter 10. Are sent one by one. And the impeller 32 receives the banknote sent from the conveyance part 14 between the two blade | wings 32b, and sends the banknote received between this blade | wing 32b to the stacking part 30. In this way, banknotes are sent one by one from the impeller 32 to the stacking unit 30, and a plurality of banknotes are stacked in this stacking unit 30 in an aligned state.

  As described above, the transport unit 14 is provided with a plurality of transport paths 14a, 14b, 14c, and 14d arranged in series, and banknotes are transported along the order of the transport paths 14a, 14b, 14c, and 14d. It has become so. Here, the 1st conveyance path 14a is arrange | positioned in the upstream of the magnetic sensor 24 and the receiving roller 25 in the conveyance direction of a banknote. The second transport path 14b is disposed on the downstream side of the magnetic sensor 24 and the receiving roller 25 and on the upstream side of the pair of line sensors 21 and 22 in the banknote transport direction. The third conveyance path 14 c is disposed between the pair of line sensors 21 and 22. Moreover, the 4th conveyance path 14d is arrange | positioned in the downstream of a pair of line sensors 21 and 22 in the conveyance direction of a banknote.

  In the bill counter 10 of the present embodiment, the height of the first transport path 14a and the height of the fourth transport path 14d are 3 mm, respectively, whereas the height of the second transport path 14b, And the height of the 3rd conveyance path 14c is 2 mm, respectively. Thus, since the height of the second transport path 14b is smaller than the height of the first transport path 14a, such a second transport path 14b is referred to as “the height of the transport path on the more upstream side. It functions as a “narrow portion whose height is narrower than the height of the first conveyance path 14a”.

  In the present embodiment, the height of the second transport path 14b that functions as a narrow portion is substantially the same as the height of the third transport path 14c between the pair of line sensors 21 and 22. . As described above, the height of the narrow portion is substantially the same as the distance between the opposing surfaces of the pair of line sensors 21 and 22. In addition, in the banknote counter 10 of this Embodiment, it is not limited to such an aspect. The height of the narrow portion (that is, the height of the second conveyance path 14b) may be smaller than the height of the third conveyance path 14c, which is the distance between the opposing surfaces of the pair of line sensors 21 and 22. . In addition, is the height of the narrow portion (that is, the height of the second transport path 14b) substantially the same as the height of the space through which bills pass in the components of the identification unit 20 other than the pair of line sensors 21 and 22? It may be narrower than that.

  The height of the fourth transport path 14d on the downstream side of the pair of line sensors 21 and 22 in the banknote transport direction is higher than the height of the narrow portion (that is, the height of the second transport path 14b). It is getting bigger. Specifically, as described above, the height of the second transport path 14b is 2 mm, whereas the fourth transport path on the downstream side of the pair of line sensors 21 and 22 in the banknote transport direction. The height of 14d is 3 mm. In addition, in the banknote counter 10 of this Embodiment, it is not limited to such an aspect.

  As described above, the identification unit 20 includes the receiving roller 25 and the magnetic sensor 24 provided so as to face the receiving roller 25, and the banknote is received from the receiving roller 25 and the magnetic sensor in the identification unit 20. 24 to pass through. Here, the narrow part similar to the 2nd conveyance path 14b may be provided in the upstream of the magnetic sensor 24 and the receiving roller 25 in the conveyance direction of a banknote. In this case, the height of the narrow portion provided upstream of the magnetic sensor 24 and the receiving roller 25 in the bill conveyance direction is the same as the height of the space between the receiving roller 25 and the magnetic sensor 24 in the identification unit 20. It is desirable to be narrower than that.

  Moreover, in the banknote counter 10 of this Embodiment, as shown in FIG. 3, the conveyance paths 14a, 14b, 14c, and 14d of the conveyance part 14 are extended substantially linearly in the body of the banknote counter 10. As shown in FIG. In addition, in the banknote counter 10 of this Embodiment, it is not limited to such an aspect. As a modification, in order to prevent coins erroneously inserted into the input unit 12 from reaching the pair of line sensors 21 and 22, the conveyance path of the conveyance unit 14 on the upstream side of the narrow portion, that is, the first conveyance. The path 14a may be curved. As another modification, the height of the second transport path 14b, which is a narrow portion, may be gradually narrowed along the banknote transport direction. Moreover, the height of the 1st conveyance path 14a is narrowed gradually along the conveyance direction of a banknote, and it is the same height as the height of the 2nd conveyance path 14b which is a narrow part in the exit of the 1st conveyance path 14a. It may be made to become.

  As shown in FIGS. 3 and 4, the insertion unit 12 is provided with a detection sensor 40 for detecting whether or not banknotes are accumulated in the insertion unit 12. The detection sensor 40 is composed of a reflection sensor having a light emitting element and a light receiving element. When bills are accumulated in the insertion unit 12, light emitted from the light emitting elements of the reflection sensor is integrated in the insertion unit 12. It is reflected by the bill and received by the light receiving element of the reflection sensor. In this way, it is detected by the detection sensor 40 whether or not banknotes are accumulated in the insertion unit 12.

  As shown in FIGS. 3 and 4, the stacking unit 30 is provided with a pair of detection sensors 42 and 44 for detecting whether or not banknotes are stacked on the stacking unit 30. One of the pair of detection sensors 42 and 44 is provided with a light emitting element, and the other is provided with a light receiving element. And when the banknote is not integrated | stacked on the stacking part 30, the light emitted from the light emitting element of one detection sensor (for example, detection sensor 42) is light reception of the other detection sensor (for example, detection sensor 44). When the banknotes are stacked on the stacking unit 30, the light emitted from the light emitting element of one detection sensor (for example, the detection sensor 42) is received by the banknotes stacked on the stacking unit 30. It is blocked so that it cannot be received by the light receiving element of the other detection sensor (for example, the detection sensor 44). In this way, it is detected by the pair of detection sensors 42 and 44 whether or not banknotes are stacked on the stacking unit 30.

  Moreover, the banknote counter 10 shown in FIG. 1 etc. is provided with the control part 50 which controls each component of the said banknote counter 10 concerned. A functional block diagram of such a bill counter 10 is shown in FIG. As shown in FIG. 5, the control unit 50 includes a feeding mechanism 13 provided in the input unit 12, a conveyance unit 14, an identification unit 20, a drive unit 32 c of the impeller 32, and a detection sensor 40 provided in the input unit 12. A pair of detection sensors 42 and 44 provided in the stacking unit 30 are connected to each other. And the identification information of the banknote obtained by the identification part 20 and the detection information of the banknote obtained by each detection sensor 40,42,44 are sent to the control part 50. FIG. Further, the control unit 50 sends a command signal to each component of the bill counter 10, specifically, for example, the feeding mechanism 13, the transport unit 14, the drive unit 32 c of the impeller 32, and controls the operation of these components. It is supposed to be.

  As shown in FIG. 1, an operation unit 58 and a display unit 62 are provided on the front surface of the housing 11 of the bill counter 10. The operation unit 58 has a plurality of operation keys, and various commands can be given to the control unit 50 of the bill counter 10 when the operator presses these operation keys. The display unit 62 displays various information such as banknote counting results by the banknote counter 10.

  Further, as shown in FIG. 5, a storage unit 56 is connected to the control unit 50, and various information such as a bill counting result by the bill counter 10 is stored in the storage unit 56. ing. An image data acquisition unit 52 and a character recognition unit 54 are connected to the control unit 50, respectively. The image data acquisition unit 52 acquires image data including at least the serial number (crown number) of the banknote based on information on the surface of the banknote obtained by the pair of line sensors 21 and 22 in the identification unit 20. It has become. Moreover, the character recognition part 54 recognizes the character of a serial number (for example, a number of about 10 digits) based on the image data of the surface of the banknote acquired by the image data acquisition part 52. As the character recognition unit 54, for example, a unit that performs recognition processing by an OCR (Optical Character Recognition) method is used.

  Further, as shown in FIG. 5, an output unit 60 is connected to the control unit 50. The output unit 60 outputs various information. Specifically, the output unit 60 includes a display unit 62, a communication unit 66, and a writing unit 70. Here, the communication unit 66 transmits various information to an external device. Specifically, the communication unit 66 has a connection terminal 68 into which a connection cord is inserted. The writing unit 70 writes various information to the storage medium.

  Next, the configuration of the side surface of the housing 11 of the bill counter 10 will be described with reference to FIG. As described above, FIG. 2 is a side view when the banknote counter 10 shown in FIG. 1 is viewed from the right side. As shown in FIG. 2, a switch 80, a power cord insertion port 81, and a fuse 82 are provided on the side surface of the housing 11 of the bill counter 10. The switch 80 can switch the operation of the bill counter 10 on and off. In addition, by inserting a power cord into the insertion port 81, power can be supplied to the bill counter 10 from the outside. In addition, the banknote counter 10 of the present embodiment is provided with two fuses 82.

  As shown in FIG. 2, two serial interfaces 68 a and 68 b are provided on the side surface of the housing 11 of the bill counter 10. Connection codes can be inserted into the serial interfaces 68a and 68b, and external devices such as printers are connected to the bill counter 10 via the connection codes inserted into the serial interfaces 68a and 68b. Be able to. Further, an insertion port 70a for inserting an SD card and an insertion port 70b for inserting a USB are provided on the side surface of the housing 11 of the bill counter 10. When an SD card is inserted into the insertion slot 70a, various information can be written to the SD card and various information can be read from the SD card. Such an insertion port 70a constitutes a writing unit 70 for writing various information to the storage medium. Further, an external device such as a personal computer can be connected to the bill counter 10 by inserting the USB into the insertion port 70b. The serial interface 68a, 68b and the insertion port 70b constitute the connection terminal 68 of the communication unit 66.

  Now, with reference to FIG. 6 thru | or FIG. 10, the detail of the banknote conveying apparatus 110 employ | adopted in the banknote counter of this Embodiment is demonstrated. 6 is a perspective view of the banknote transport apparatus 110 according to the present embodiment, FIG. 7 is a front view of the banknote transport apparatus 110 of FIG. 6, and FIG. 8 is a side view of the banknote transport apparatus 110 of FIG. 9 is a side view showing the adjustment screw contact base member, the adjustment screw, and a part of the gate arm of the banknote transport apparatus 110 of FIG. 6, and FIG. 10 is a side view of the banknote transport apparatus 110 of FIG. It is a rear view of the adjustment screw contact base member.

  As shown in FIGS. 6 to 8, the banknote transport device 110 included in the banknote counter according to the present embodiment is configured to transport paper sheets one by one, and is provided so as to face each other. A feed roller 111 and a gate roller 112 are provided with a gap G formed between them as a bill conveyance path. Two gate rollers 112 are supported on the left and right by the gate roller shaft 114, and three feed rollers 111 are supported on the left and right by the feed roller shaft 113.

  As shown in FIGS. 6 to 8, one side of the gate arm 122 supports a bearing 116 that rotatably supports the gate roller shaft 114, and the other side of the gate arm 122 is fixed to the gate arm shaft 121. Yes. The gate arm shaft 121 is held on, for example, a side surface of the housing so that the shaft can rotate. Therefore, as the gate arm shaft 121 rotates, the gate arm 122 and the gate roller shaft 114 are integrally rotated around the axis of the gate arm shaft. As a result, the gate arm 122 is rotated around the gate arm shaft 121 so that the gate roller shaft 114 can be relatively close to or separated from the feed roller shaft 113.

  Then, as shown in FIGS. 6 to 10, the rotation position of the gate arm 122 is adjusted by rotating the gate arm shaft 121, the position of the gate roller shaft 114 relative to the feed roller shaft 113 is adjusted, and the feed roller An adjustment mechanism 130 for adjusting the gap G between the gate 111 and the gate roller 112 is provided. The adjustment mechanism 130 includes an adjustment screw contact base member 131 and an adjustment screw 132. The adjustment screw contact base member 131 is fixed to a housing (not shown). The adjustment screw 132 is screwed into a screw hole 122t provided in the auxiliary gate arm 122s and is in contact with the adjustment screw contact base member 131. The auxiliary gate arm 122 s is fixed to the gate arm shaft 121, and rotates integrally with the gate arm 122 around the gate arm shaft 121 as the gate arm shaft 121 rotates. Thus, the relative position of the gate arm 122 with respect to the adjustment screw contact base member 131 can be adjusted by manually adjusting the screwing position of the adjustment screw 132 with the screw hole 122t.

  With the configuration described above, the position of the gate roller shaft 114 relative to the feed roller shaft 113 is adjusted by manually adjusting the screwing position of the adjustment screw 132 with respect to the screw hole 122t, and the feed roller 111, the gate roller 112, The gap G between the two can be adjusted. Thereby, it is possible to absorb the influence of various dimensional variations at the time of completing the assembly of the parts.

  Here, a polyamide resin is provided in a thickness of 16 mm as a feed roller resin that expands or contracts depending on the environmental temperature on each surface (outer peripheral surface) of the three right and left feed rollers 111. As the polyamide resin to be employed, a resin having an average value of linear expansion coefficient of the resin of 0.000045 is preferable.

  On the other hand, on each surface (outer peripheral surface) of the two left and right gate rollers 112, a urethane resin having a thickness of 10 mm is provided as a gate roller resin that expands or contracts depending on the environmental temperature. As the adopted urethane resin, a resin having an average linear expansion coefficient of 0.00022 is preferable.

  Therefore, in this embodiment, the expansion amount of the feed roller resin is 0.000045 × 16 = 0.00072 (mm) with respect to the temperature change + 1 °, and the expansion amount of the gate roller resin is 0.00022. Since x10 = 0.0022 (mm), the total expansion amount (gap reduction amount) is 0.00292 (mm). It is desired that the gate roller shaft 114 is retracted (separated from the feed roller shaft 113) by the expansion amount.

  In this embodiment, the distance from the gate arm shaft 121 to the gate roller shaft 114 is 35 mm, from the gate arm shaft 121 to the contact portion between the adjustment screw contact base member 131 and the adjustment screw 132. The distance is 21 mm. Therefore, in accordance with the lever principle, it is desirable that the adjusting screw contact base member 131 expands by 0.00292 × 21/35 = 0.17552 (mm) with respect to a temperature change of + 1 °.

  Accordingly, in this embodiment, the adjustment screw contact base member 131 is adjusted to the environmental temperature so as to reduce or compensate for the expansion effect depending on the environmental temperature of the feed roller resin and the gate roller resin. It has a temperature displacement compensating resin portion 131r that expands depending on it. Specifically, urethane resin having a linear expansion coefficient of 0.00035 is provided with a thickness of 5 mm. As a result, the temperature displacement compensating resin portion can realize an expansion of 0.00035 × 5 (mm) = 0.00175 (mm) with respect to a temperature change of + 1 °.

  On the other hand, in this embodiment, the shrinkage amount of the feed roller resin is 0.000045 × 16 = 0.00072 (mm) with respect to the temperature change of −1 °, and the shrinkage amount of the gate roller resin is 0.00. Since 00002 × 10 = 0.0002 (mm), the total contraction amount (gap increase amount) is 0.00292 (mm). It is desirable that the gate roller shaft 114 be brought close to the feed roller shaft 113 by the contraction amount.

  In this embodiment, the distance from the gate arm shaft 121 to the gate roller shaft 114 is 35 mm, from the gate arm shaft 121 to the contact portion between the adjustment screw contact base member 131 and the adjustment screw 132. The distance is 21 mm. Therefore, in accordance with the lever principle, the adjustment screw contact base member 131 is desirably contracted by 0.00292 × 21/35 = 0.17552 (mm) with respect to a temperature change of −1 °.

  Accordingly, in this embodiment, the adjustment screw contact base member 131 is adjusted to the environmental temperature so as to reduce or compensate for the shrinkage effect depending on the environmental temperature of the feed roller resin and the gate roller resin. It has a temperature displacement compensating resin portion 131r that shrinks depending on it. Specifically, urethane resin having a linear expansion coefficient of 0.00035 is provided with a thickness of 5 mm. Thereby, the resin part for temperature displacement compensation can realize shrinkage of 0.00035 × 5 (mm) = 0.00175 (mm) with respect to the temperature change of −1 °.

  By generalizing the above relationship, the linear expansion coefficient of the feed roller resin is Cf, the linear expansion coefficient of the gate roller resin is Cg, the linear expansion coefficient of the temperature displacement compensating resin portion 131r is Cc, and the thickness of the feed roller resin is Tf, the thickness of the resin for the gate roller Tg, the distance from the gate arm shaft 121 to the gate roller shaft 114 is Lg, and from the gate arm shaft 121 to the contact portion between the adjustment screw contact base member 131 and the adjustment screw 132 Is a thickness Tc of the temperature displacement compensating resin portion 131r given by (Cf · Tf + Cg · Tg) · (Ls / Lg) / Cc.

  Here, the distance Lg from the gate arm shaft 121 to the gate roller shaft 114 is preferably longer than the distance Ls from the gate arm shaft 121 to the contact portion between the adjustment screw contact base member 131 and the adjustment screw 132. . Thereby, even if the change due to expansion or contraction of the temperature displacement compensating resin portion 131r is small, the gap G between the feed roller 111 and the gate roller 112 can be greatly changed. However, if the distance Lg is made too long compared to the distance Ls, the load applied to the temperature displacement compensating resin portion 131r increases, and the expected effect may not be obtained. In the present embodiment, by setting the ratio of the distance Lg to the distance Ls to 5: 3, the load applied to the temperature displacement compensating resin portion 131r is suppressed low, and the change in the temperature displacement compensating resin portion 131r is changed to the gap G. Can be extended to communicate.

  As shown in FIGS. 9 and 10, the adjustment screw contact base member 131 has a metal plate portion 131 m at a portion in contact with the adjustment screw 132. This is because if the entire adjustment screw abutting base member 131 is made of the temperature displacement compensating resin 131r, damage is caused at an early stage at the portion abutting on the adjustment screw 132, which is not desirable.

  Next, operation | movement of the banknote counter 10 which consists of such a structure is demonstrated. Specifically, a bill counting method by the bill counter 10 will be described. In addition, operation | movement of the banknote counter 10 as shown below is performed when the control part 50 controls each component of the banknote counter 10. FIG.

  First, if necessary, the position of the gate roller shaft 114 relative to the feed roller shaft 113 is adjusted by manually adjusting the screwing position of the adjustment screw 132 with respect to the screw hole 122t, and the feed roller 111, the gate roller 112, Is adjusted. Thereby, it is possible to absorb the influence of various dimensional variations at the start of device use.

  Next, an operator places a stack of banknotes to be counted by the banknote counter 10 on the input unit 12 in a stacked state. When the operator depresses the operation key 58a which is a start / stop key, the banknotes placed in the stacked state on the input unit 12 are fed into the housing 11 one by one by the feeding mechanism 13. The bills fed into the housing 11 by the feeding mechanism 13 are transported one by one by the transport unit 14. At this time, the banknotes are transported along the order of the transport paths 14a, 14b, 14c, and 14d. In addition, while the banknote is transported by the transport unit 14, the banknote is identified by the identifying unit 20 such as denomination, version, authenticity, and damage. And the banknote identified by the identification part 20 is sent to the stacking part 30 by the conveyance part 14, and comes to be integrated | stacked by this stacking part 30. FIG.

  In the banknote counter 10 of the present embodiment, when it is determined that the banknote identified by the identification unit 20 is a banknote to be rejected, when the banknote to be rejected is stacked in the stacking unit 30, the feeding mechanism. 13, the operation of the transport unit 14 and the impeller 32 is stopped, and the banknote identified by the identifying unit 20 before the banknote determined to be a banknote to be rejected (hereinafter also referred to as “reject banknote”). Are displayed on the display unit 62. More specifically, when it is determined that the banknote identified by the identification unit 20 is a banknote to be rejected, the feeding mechanism 13 may be stopped so as to stop taking in a new banknote. Or when it determines with the banknote identified by the identification part 20 being a banknote which should be rejected, the banknote which should be rejected is integrated | stacked on the stacking part 30, and accumulation | stacking to the stacking part 30 of a new banknote is prohibited. Also good. Or when it determines with the banknote identified by the identification part 20 being the banknote which should be rejected, the banknote which should be rejected may be integrated | stacked on the stacking part 30, and the conveyance part 14 may be stopped after that. Note that banknotes are stacked on the stacking unit 30 in the order identified by the identifying unit 20, and banknotes determined to be reject banknotes are stacked on the top of the stacked banknotes.

  As described above, a plurality of banknotes stacked in the stacking unit 30 by causing the display unit 62 to display the serial number of the banknote identified by the identifying unit 20 immediately before the banknote determined to be a reject banknote. Among these, reject banknotes can be easily specified. That is, the banknote on one of the banknotes with the serial number displayed on the display unit 62 can be regarded as a reject banknote. In particular, when two or more banknotes are sent to the stacking unit 30 as reject banknotes due to a conveyance abnormality such as chaining or double feeding, how much of the banknotes conventionally stacked in the stacking unit 30 is the reject banknote. Although it was difficult to determine, the method according to the present embodiment makes it possible to easily identify rejected banknotes. Then, the operator removes rejected banknotes from the banknotes accumulated in the accumulating unit 30, and throws the remaining banknotes into the insertion unit 12 again to recount the banknotes. Alternatively, the operator may manually input information related to the reject banknote using the operation unit 58.

  Moreover, in the banknote counter 10 of this Embodiment, the predetermined number identified by the identification part 20 before the reject banknote including the serial number of the banknote identified by the identification part 20 one sheet before the reject banknote. The serial number of the banknote may be displayed on the display unit 62. In this case, the reject banknote can be identified more easily.

  Moreover, in the banknote counter 10 of this Embodiment, in addition to the serial number of the banknote identified by the identification part 20 one sheet before a reject banknote, the number of normal banknotes identified by the identification part 20 is also displayed on the display unit. 62 may be displayed. In addition, when the reject banknote is identified by the identification unit 20, information indicating that the reject banknote has been identified by the identification unit 20 (for example, “rejected banknotes that are not normal banknotes have been identified and removed from the stacking unit. The message “Please” ”may be displayed on the display unit 62.

  Moreover, in the banknote counter 10 of this Embodiment, in addition to the serial number of the banknote identified by the identification part 20 one sheet before a reject banknote, the information regarding the rejection factor of the reject banknote identified by the identification part 20 is also included. It may be displayed on the display unit 62. Here, examples of the reject factor of the reject banknote include “chain”, “double feed”, “skew”, “fake ticket”, “denomination cannot be determined”, and the like.

  Note that in the banknote counter 10 of the present embodiment, when it is determined that the banknote identified by the identification unit 20 is a reject banknote, the banknotes identified by the identification unit 20 one sheet before the reject banknote are recorded. Although the number is displayed on the display unit 62, the bill counter 10 of the present embodiment is not limited to such a mode. In the banknote counter 10 of this Embodiment, when it determines with the banknote identified by the identification part 20 being a reject banknote, the serial number of the banknote identified by the identification part 20 one sheet before a reject banknote is carried out. It may be output by the output unit 60. Specifically, instead of being displayed on the display unit 62, or in addition to being displayed on the display unit 62, the serial number of the banknote identified by the identification unit 20 immediately before the rejected banknote, The serial number of the banknote identified by the identifying unit 20 one sheet before may be output from the communication unit 66 and printed by a printer connected to the banknote counter 1.

  As another example, when it is determined that the banknote identified by the identification unit 20 is a reject banknote, the serial number of the banknote identified by the identification unit 20 one sheet before the reject banknote is the writing unit. 70 may be written to a storage medium such as an SD card.

  As described above, according to the banknote counter 10 of the present embodiment, at a predetermined location upstream of the identification unit 20 (specifically, the pair of line sensors 21 and 22) in the conveyance path of the conveyance unit 14. A narrow portion having a height narrower than the height at the entrance portion in the transport path is provided. More specifically, the 2nd conveyance path 14b arrange | positioned upstream from a pair of line sensors 21 and 22 in the conveyance direction of a banknote functions as a narrow part, and this 2nd conveyance path. The height of 14b is made narrower than the height of the 1st conveyance path 14a provided in the entrance part of the said conveyance part 14 among the conveyance paths of the conveyance part 14. FIG. More specifically, the height of the second transport path 14b is, for example, 2 mm, the height of the first transport path 14a is, for example, 3 mm, and the height of the second transport path 14b is the first transport path. It is smaller than the height of 14a. As a result, even if coins are accidentally inserted into the insertion unit 12, such coins stop at the narrow portion (second conveyance path 14b), thereby causing the line sensors 21 and 22 in the identification unit 20 to Reaching can be prevented.

  Further, in this embodiment, the expansion amount of the feed roller resin is 0.000045 × 16 = 0.00072 (mm) with respect to the temperature change + 1 °, and the expansion amount of the gate roller resin is 0.00022. Since x10 = 0.0002 (mm), the total expansion amount (gap reduction amount) with respect to the temperature change + 1 ° is 0.00292 (mm). When the temperature change is + 1 °, it is desirable that the gate roller shaft 114 is retracted (separated from the feed roller shaft 113) by the amount of expansion.

  In this embodiment, the distance from the gate arm shaft 121 to the gate roller shaft 114 is 35 mm, from the gate arm shaft 121 to the contact portion between the adjustment screw contact base member 131 and the adjustment screw 132. Therefore, the adjusting screw contact base member 131 expands by 0.00292 × 21/35 = 0.17552 (mm) with respect to the temperature change + 1 ° according to the principle of the lever. It is desirable.

  Accordingly, in this embodiment, the temperature displacement compensating resin portion 131r of the adjustment screw contact base member 131 is made of urethane resin having a linear expansion coefficient of 0.00035 and a thickness of 5 mm. The expansion of 0.00035 × 5 (mm) = 0.00175 (mm) can be automatically realized with respect to the temperature change + 1 °.

  That is, according to this embodiment, when the environmental temperature changes, the influence of expansion of the feed roller resin and the gate roller resin can be automatically reduced or compensated.

  In this embodiment, the shrinkage amount of the feed roller resin is 0.000045 × 16 = 0.00072 (mm) with respect to the temperature change of −1 °, and the shrinkage amount of the gate roller resin is 0.00. Since 00002 × 10 = 0.0002 (mm), the total shrinkage (gap increase) with respect to the temperature change of −1 ° is 0.00292 (mm). When the temperature change is -1 °, it is desirable to retract the gate roller shaft 114 by the contraction amount (separate from the feed roller shaft 113).

  In this embodiment, the distance from the gate arm shaft 121 to the gate roller shaft 114 is 35 mm, from the gate arm shaft 121 to the contact portion between the adjustment screw contact base member 131 and the adjustment screw 132. Therefore, according to the lever principle, the adjusting screw contact base member 131 contracts by 0.00292 × 21/35 = 0.17552 (mm) with respect to the temperature change of −1 °. It is desirable to do.

  Accordingly, in this embodiment, the temperature displacement compensating resin portion 131r of the adjustment screw contact base member 131 is made of urethane resin having a linear expansion coefficient of 0.00035 and a thickness of 5 mm. Further, a shrinkage of 0.00035 × 5 (mm) = 0.00175 (mm) can be automatically realized with respect to a temperature change of −1 °.

  That is, according to the present embodiment, when the environmental temperature changes, the influence of the shrinkage of the feed roller resin and the gate roller resin can be automatically reduced or compensated.

  The paper sheet counter according to the present invention is not limited to the above-described embodiment, and various changes can be made. More specifically, the paper sheet counter according to the present invention is not limited to a banknote counter that counts banknotes. As the paper sheet counting machine according to the present invention, a paper counting machine such as a check or a gift certificate may be used.

  Further, the paper sheet counter according to the present invention is not limited to one provided with one input unit and one stacking unit. As another aspect of the paper sheet counter according to the present invention, two or more input sections are provided, and the paper sheets input into each input section are taken into the housing and identified by the identification section. It may come to be. As another example, two or more stacking units may be provided, and paper sheets identified by the identifying unit may be distributed to each stacking unit.

Claims (7)

A paper sheet transport device for transporting paper sheets one by one,
A feed roller and a gate roller, which are provided so as to face each other and have a gap formed between them as a conveyance path for paper sheets;
A gate roller shaft for supporting the gate roller;
A feed roller shaft for supporting the feed roller;
A bearing for rotatably supporting the gate roller shaft on one side is supported, and the gate roller shaft is fixed to the gate arm shaft on the other side and is rotated along with the rotation of the gate arm shaft so that the gate roller shaft is rotated. A gate arm relatively close to or separated from the feed roller shaft;
An adjustment mechanism that adjusts the position of the gate roller shaft relative to the feed roller shaft by adjusting the rotation position of the gate arm, and adjusts the gap between the feed roller and the gate roller;
With
The adjustment mechanism is
An adjustment screw contact base member fixed to the housing;
The screw is fixed to the gate arm shaft and is screwed into a screw hole provided in an auxiliary gate arm that rotates the gate arm shaft, and is also in contact with the adjustment screw contact base member and screwed into the screw hole. An adjustment screw that adjusts the relative position of the gate arm with respect to the adjustment screw contact base member by adjusting the position;
Have
The surface of the feed roller has a feed roller resin that expands or contracts depending on the environmental temperature,
The surface of the gate roller has a gate roller resin that expands or contracts depending on the environmental temperature,
The adjusting screw contact base member expands or contracts depending on the environmental temperature so as to reduce or compensate for the expansion or contraction effect depending on the environmental temperature of the feed roller resin and the gate roller resin. A paper sheet transporting device comprising a temperature displacement compensating resin portion. The paper sheet conveying device according to claim 1, wherein the adjustment screw contact base member has a metal plate portion at a portion in contact with the adjustment screw. The distance from the gate arm shaft to the gate roller shaft is longer than the distance from the gate arm shaft to the contact portion between the adjustment screw contact base member and the adjustment screw. The paper sheet conveying apparatus according to 1. The ratio of the distance from the gate arm shaft to the gate roller shaft and the distance from the gate arm shaft to the contact portion between the adjustment screw contact base member and the adjustment screw is 5: 3. The paper sheet conveying apparatus according to claim 1. The feed roller resin has an average linear expansion coefficient of 0.000040 to 0.000050,
The resin for gate rollers has a linear expansion coefficient of 0.00017 to 0.00027 in an average value,
2. The paper sheet conveying apparatus according to claim 1, wherein the temperature displacement compensating resin portion has a linear expansion coefficient of 0.00030 to 0.00040 in average value. The feed roller resin has an average linear expansion coefficient of 0.000045,
The gate roller resin has a linear expansion coefficient of 0.00022 in an average value,
6. The paper sheet conveying apparatus according to claim 5, wherein the temperature displacement compensating resin portion has a linear expansion coefficient of 0.00035 in an average value. The feed roller resin has an average thickness of 16 mm,
The gate roller resin has an average thickness of 10 mm,
The ratio of the distance from the gate arm shaft to the gate roller shaft and the distance from the gate arm shaft to the contact portion between the adjustment screw contact base member and the adjustment screw is 5: 3. ,
The paper sheet transport device according to claim 6, wherein the temperature displacement compensating resin portion has a thickness of 5 mm in an average value.

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