JP5347771B2 - Medium transport device - Google Patents

Description

  The present invention relates to a medium transport apparatus that transports media such as banknotes and forms, and more particularly to a medium transport apparatus that discharges the transported medium and accumulates it in a stacker.

  When a medium is transported and discharged to a stacker, a conventional medium transport apparatus has a rigidity by curving the medium to be ejected by providing a flange on a discharge roller that ejects the medium so that the front end of the medium does not hang down. In some cases, the medium is made to sit down (see, for example, Patent Document 1).

  An example of a conventional configuration that sits on the medium to be discharged in this way will be described based on a schematic side view of the medium conveying device in the conventional example of FIG. 4 and a schematic CC arrow view of the medium conveying device in the conventional example of FIG.

  4 and 5, the medium transport apparatus 101 is disposed at the entrance of the medium stacker 102 that stacks and stores the medium 122, and sits on the medium 120 and discharges it to the medium stacker 102. Discharge roller 103, a tension roller 104 disposed between the discharge roller 103 and the peripheral surface of the discharge roller 103, a conveyance guide 105 for guiding the medium 120, and a medium stacker. The impeller 107 is configured to knock down the rear end of the medium 120 discharged to the medium 102.

  As shown in FIG. 5, two discharge rollers 103 are attached to a rotatable shaft 106, and each discharge roller 103 is disposed so as to be in contact with the peripheral surface of the tension roller 104 near the center. . Further, the diameter of both side portions of each discharge roller 103 is formed to be larger than the diameter of the center portion, and the medium 120 sandwiched between the tension roller 104 at the tapered portion of the discharge roller 103 is held. It is bent in the shape of a letter W so as to be waisted.

  In this way, the medium 120 to be discharged is seated so that the tip of the medium 121 does not sag as shown by the broken line in FIG.

Japanese Patent Laid-Open No. 9-110260 (paragraph “0078”, FIG. 13)

  However, in the conventional technique described above, when the discharge roller 103 and the tension roller 104 discharge the medium 120 having a high rigidity, the end of the medium 120 abuts on the conveyance guide 105 as indicated by reference numerals 130a and 130b in FIG. There is a problem that a medium conveyance abnormality occurs.

  When the medium 120 on which the discharge roller 103 and the tension roller 104 overlap is discharged, the medium 120 cannot be sandwiched between the discharge roller 103 and the tension roller 104 as shown in FIG. When the power is lost, there is a problem that a conveyance error of the medium occurs.

  An object of the present invention is to solve such a problem, and it is an object of the present invention to release a medium while sitting on the medium without causing an abnormality in the conveyance of the medium.

Therefore, according to the present invention, a plurality of roller pairs in which two rollers are opposed to each other are arranged in a direction orthogonal to the medium conveyance direction, and the medium is sandwiched and conveyed by the roller pair and is orthogonal to the medium conveyance direction. In the medium conveying apparatus that curves and discharges in the direction, the roller pair includes a discharge roller that is rotated by a driving unit and a pressing roller that is disposed so as to be in contact with a peripheral surface of the discharge roller. The pair is disposed across the central portion of the medium conveyance path, and at least two of the discharge rollers disposed on both side surfaces of the medium conveyance path are on the central portion side of the medium conveyance path from the contact surface with the pressing roller. diameter of the end portion is formed to be larger than the diameter of the end portion of the side surface side of the medium conveying path from the contact surface, with a high friction member only in the pressing roller abutting portion of the end portion of the side surface And said that you are.

  According to the present invention as described above, there is an effect that the medium can be ejected without causing an abnormality in the conveyance of the medium.

BB arrow Schematic view of the medium transport device in the first embodiment 1 is a schematic side view of a medium transport device in a first embodiment. BB arrow Schematic view of the medium transport device in the second embodiment Schematic side view of a medium conveying device in a conventional example Schematic CC arrow view of the medium conveying device in the conventional example Explanatory drawing of medium conveyance in the conventional example

  Embodiments of a medium transport apparatus according to the present invention will be described below with reference to the drawings.

  FIG. 2 is a schematic side view of the medium transport apparatus in the first embodiment, FIG. 1 is a schematic view of the medium transport apparatus in the first embodiment taken along the arrow BB, and FIG. 1 is viewed in the direction indicated by the arrow BB in FIG. FIG.

  In FIG. 2, reference numeral 1 denotes a medium conveying device that conveys and discharges a medium such as banknotes one by one. In the present embodiment, the medium transport apparatus 1 will be described assuming that the medium to be transported sits and is ejected, and the ejected medium is accumulated in a storage.

  Reference numeral 2 denotes a medium storage, which is a storage that stacks and stores the transported and discharged media.

  Reference numeral 3 denotes a discharge roller, which is disposed at the upper entrance of the medium stacker 2 and rotates in the direction indicated by the arrow A in the figure to transport the medium and sit on the transported medium to the medium stacker 2. To be released.

  Reference numeral 4 denotes a tension roller as a pressing roller, which is disposed so as to be in contact with the peripheral surface of the discharge roller 3, and is rotated by the rotation of the discharge roller 3, and presses the conveyed medium to the discharge roller 3. Thus, the medium is sandwiched and conveyed with the discharge roller 3. The discharge roller 3 and the tension roller 4 form one roller pair, and a part of the medium is sandwiched and conveyed by the roller pair.

  Reference numeral 5 denotes a conveyance guide for guiding a medium to be conveyed, which forms upper and lower surfaces of a medium conveyance path (hereinafter referred to as “conveyance path”) through which the medium is conveyed.

  Reference numeral 6 denotes a shaft, which is a rotation shaft of the discharge roller 3 provided on the lower side of the conveyance guide 5 that forms the lower surface of the conveyance path, and is configured to be rotatable by a rotation driving means such as a motor (not shown). The discharge roller 3 is attached to the shaft 6, the discharge roller 3 is in contact with the lower surface of the medium to be conveyed, and the tension roller 4 is in contact with the upper surface of the medium to be conveyed so as to sandwich the medium.

  Reference numeral 7 denotes an impeller, which is made of an elastic member such as rubber, is attached to the shaft 6, and is a rear end portion of the medium discharged to the medium stacker 2 by rotating in the direction indicated by the arrow A in the drawing together with the discharge roller 3. It is for knocking down.

  In FIG. 1, reference numeral 8 denotes a bearing, which is a bearing of the shaft 6. Reference numeral 9 denotes a conveyance path frame which forms both side surfaces of the conveyance path and supports the bearings 8.

  Reference numeral 10 denotes a contact surface at the center of the discharge roller 3 that comes into contact with the medium pressed by the tension roller 4, and is composed of a high-friction member such as rubber in order to increase the conveyance force of the medium.

  The discharge roller 3 (3a, 3b) and the tension roller 4 (4a, 4b) are near the center of the shaft 6, that is, in a direction perpendicular to the direction in which the medium is transported so as to sandwich the center of the transport path (horizontal in FIG. 1). Two impellers 7 in each direction, and two impellers 7 on both sides of the discharge roller 3a and the tension roller 4a and two on both sides of the discharge roller 3b and the tension roller 4b (7a, 7b, 7c, 7d) is arranged.

  Each discharge roller 3 (3a, 3b) has a contact surface 10 having a diameter 32 (32a, 32b) closer to the center of the conveyance path than the contact surface 10 (10a, 10b) with the tension roller 4 (4a, 4b). 10 (10a, 10b) is formed to be larger than the diameter 33 (33a, 33b) on the side surface side (conveyance path frame 9 side) of the conveyance path. It is formed in a tapered shape that gradually increases as the distance from the vicinity of the contact surface 10 with the tension roller 4 increases. Moreover, the diameter of the center part of the vicinity of the contact surface 10 of each discharge | release roller 3 (3a, 3b) and the side surface side (conveyance path flame | frame 9 side) of a conveyance path is substantially the same.

  The medium 20 sandwiched between the tension roller 4 at the end 31 (31a, 31b) on the center side of the transport path formed in the tapered shape of the discharge roller 3 (3a, 3b) in this way is defined as the transport direction. It is designed to bend and bend in a perpendicular direction.

  In the present embodiment, the two discharge rollers 3 and the tension roller 4 that contacts the discharge roller 3 are arranged with the central portion of the conveyance path interposed therebetween, but three or more tension rollers 4 may be arranged. Good. At this time, among the plurality of discharge rollers 3 arranged, the diameter 32 on the central side of the transport path from the contact surfaces 10 of at least two discharge rollers 3 on both side surfaces closest to the side surface of the transport path is the contact surface 10. What is necessary is just to be formed so that it may become larger than the diameter 33 of the side surface side (conveyance path frame 9 side) of a conveyance path. Further, the diameters of the central portion in the vicinity of the contact surface 10 of the two discharge rollers 3 and the side surface side (conveyance path frame 9 side) of the conveyance path are formed to be substantially the same.

  The effect | action of the structure mentioned above is demonstrated based on FIG. 1 and FIG.

  When the shaft 6 is rotated in the direction indicated by the arrow A in FIG. 2 by a driving means (not shown), the discharge roller 3 and the impeller 7 are rotated in the direction indicated by the arrow A, and the tension roller 4 is opposite to the direction indicated by the arrow A. Rotate.

  When the medium is conveyed from the upstream of the conveyance path (left side in FIG. 2) and conveyed to the discharge roller 3 and the tension roller 4, the medium is sandwiched between the discharge roller 3 and the tension roller 4.

  FIG. 1 shows a state in which the conveyed medium 20 is sandwiched between the discharge roller 3 and the tension roller 4.

  As shown in FIG. 1, the medium 20 is pushed up by the end portions 31a and 31b of the discharge rollers 3a and 3b disposed on the lower side of the conveyance path and is bent on the upper side of the conveyance path. . On the other hand, since the diameters of the central portion in the vicinity of the contact surface 10 of the discharge rollers 3a and 3b and the side surface side (conveying path frame 9 side) of the conveying path are substantially the same, the side surface side (conveying path frame 9 side) of the conveying path. ) Of the medium 20 is not pushed up above the transport path.

  Accordingly, the central portion of the medium 20 to be conveyed is bent to bend and the end portion on the side surface side (conveyance path frame 9 side) of the conveyance path is not pushed up above the conveyance path.

  The medium 20 thus sandwiched between the discharge roller 3 and the tension roller 4 is smoothly discharged to the medium stacker 2 without coming into contact with the transport guide 5 because the side end portion thereof is not pushed up above the transport path. And smoothly gathered in the media stacker 2. Further, since the medium 20 does not contact the conveyance guide 5, the conveyance guide 5 is not scraped or damaged.

  Further, since the medium 20 to be conveyed is surely pressed against the contact surface 10 of the discharge roller 3 by the tension roller 4, the medium 20 is conveyed with an appropriate conveying force and smoothly discharged to the medium stacker.

  As described above, in the first embodiment, the diameter of each discharge roller on the side of the conveyance path center portion from the contact surface with the tension roller is larger than the diameter on the conveyance path side surface side from the contact surface. Due to the formation, the side end of the medium sandwiched between the discharge roller and the tension roller can be smoothly discharged to the medium stacker while preventing the abnormal conveyance of the medium without contacting the conveyance guide. It is possible to obtain an effect that it is possible to smoothly accumulate in the media stacker.

  In addition, the medium to be transported can be reliably pressed against the contact surface of the discharge roller by the tension roller, and the effect that the medium can be transported with an appropriate transport force and smoothly discharged to the medium stacking can be obtained.

  FIG. 3 is a schematic BB arrow view of the medium carrying device in the second embodiment.

  The configuration of the second embodiment is a configuration in which the upper roller 11 is added to the configuration of the first embodiment. Note that parts similar to those of the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 3, 11 (11a, 11b) is an upper surface roller, and is attached so that it can rotate freely independently of a rotating shaft that is substantially the same as the rotating shaft of the tension roller 4 (4a, 4b). Laura. The upper surface roller 11 (11a, 11b) is disposed between the tension roller 4 (4a, 4b) and the side surface of the conveyance path (conveyance path frame 9), and comes into contact with the upper surface of the medium 20 to be conveyed. 20 for guiding and guiding 20 toward the discharge roller 3 (3a, 3b). In this embodiment, the upper surface rollers 11a and 11b are disposed between the tension rollers 4a and 4b and the impellers 7a and 7d.

  The effect | action of the structure mentioned above is demonstrated based on FIG. When the shaft 6 is rotated in the direction indicated by the arrow A in FIG. 2 by a driving means (not shown), the discharge roller 3 and the impeller 7 are rotated in the direction indicated by the arrow A, and the tension roller 4 is opposite to the direction indicated by the arrow A. The medium rotated in the direction and conveyed from the upstream of the conveyance path to the discharge roller 3 and the tension roller 4 is sandwiched between the discharge roller 3 and the tension roller 4 as in the first embodiment.

  FIG. 3 shows a state where the conveyed medium 20 is sandwiched between the discharge roller 3 and the tension roller 4, and the upper surface of the medium 20 is guided and guided by the upper roller 11.

  As shown in FIG. 3, the medium 20 is pushed up by the end portions 31 a and 31 b of the discharge rollers 3 a and 3 b disposed on the lower side of the conveyance path and is bent on the upper side of the conveyance path. . On the other hand, since the diameters of the central portion in the vicinity of the contact surface 10 of the discharge rollers 3a and 3b and the side surface side (conveying path frame 9 side) of the conveying path are substantially the same, the side surface side (conveying path frame 9 side) of the conveying path. ) Of the medium 20 is not pushed up above the conveyance path, and the end of the medium 20 is guided and guided in the direction of the discharge rollers 3a and 3b by contacting the upper rollers 11a and 11b. It is further suppressed that it is pushed upward.

  Accordingly, the central portion of the medium 20 to be conveyed is bent to bend and the end portion on the side surface side (conveyance path frame 9 side) of the conveyance path is not pushed up above the conveyance path.

  Thus, the medium 20 sandwiched between the discharge roller 3 and the tension roller 4 is smoothly discharged to the medium stacking unit 2 without the side end of the medium 20 being in contact with the conveyance guide 5 and is smoothly attached to the medium stacking box 2. It is accumulated in the accumulation box 2.

  As described above, in the second embodiment, in addition to the effects of the first embodiment, the upper surface roller that guides and guides the end of the medium to be conveyed to the discharge roller side is arranged on the side surface of the conveyance path from the tension roller. By arranging it on the (conveyance path frame side), even if the medium is stiff or curled, it is possible to reliably prevent abnormal conveyance of the medium without bringing the side edge of the medium into contact with the conveyance guide. The effect that it can discharge | emit smoothly to a medium storage is acquired.

  In the first embodiment and the second embodiment, the medium is described as a banknote. However, the medium is not limited to this, and forms such as checks and slips, tickets such as admission tickets and boarding tickets, and paper such as printing paper are used. A leaf-shaped medium may be used.

  In the first and second embodiments, it has been described that the discharge roller is disposed below the transport path. However, the present invention is not limited thereto, and the discharge roller is disposed above the transport path. It may be.

DESCRIPTION OF SYMBOLS 1 Medium conveyance apparatus 2 Medium storage 3 Discharge roller 4 Tension roller 5 Conveyance guide 6 Shaft 7 Impeller 8 Bearing bearing 9 Conveyance path frame 11 Upper surface roller

Claims (4)

A plurality of roller pairs in which two rollers are arranged opposite to each other are arranged in a direction orthogonal to the medium conveyance direction, and the medium is sandwiched and conveyed by the roller pair, and is curved and discharged in a direction orthogonal to the medium conveyance direction. In the medium transport device
The roller pair includes a discharge roller that is rotated by a driving unit and a pressing roller that is disposed so as to contact a peripheral surface of the discharge roller, and each of the roller pairs sandwiches a central portion of the medium conveyance path. Arranged,
At least two of the discharge rollers disposed on both side surfaces of the medium conveyance path have a diameter of an end portion closer to the center of the medium conveyance path than the contact surface with the pressing roller, and the side surface of the medium conveyance path from the contact surface. A medium conveying device, wherein the medium conveying device is formed so as to be larger than the diameter of the end portion on the side, and a high friction member is provided only on a portion of the end portion on the side surface side that contacts the pressing roller. The medium conveying apparatus according to claim 1, wherein
At least two of the discharge rollers on both side surfaces of the medium conveyance path have a diameter from the contact surface with the pressing roller to an end portion on the side surface side of the medium conveyance path and the diameter of the discharge roller on the contact surface. A medium transporting device characterized by being formed to have substantially the same diameter. In the medium conveying apparatus of Claim 1 or Claim 2,
A medium conveying apparatus comprising a roller for guiding an end of a medium to be conveyed toward the discharge roller between the pressing roller and a side surface of the medium conveying path. In the medium conveying apparatus of Claim 1, Claim 2, or Claim 3,
A medium transport characterized in that the diameter of the discharge roller in the center of the medium transport path from the contact surface with the pressing roller is formed to increase as the distance from the contact surface increases. apparatus.

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