JP2012066909A - Paper sheet accumulating mechanism and paper sheet treating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper sheet accumulating mechanism which can prevent the generation of noise caused by a collision of paper sheets with a clearance bottom of an impeller and the occurrence of the poor accumulation of the paper sheets.SOLUTION: The paper sheets sent out from a conveying part 19 are dropped toward an accumulation part 14 while advancing in a clearance 46 between vanes 44 of a rotating impeller 32 and being held. Furthermore, the paper sheets are discharged from the clearance 46 of the impeller 32 while being brought into contact with a guide plate 36 and accumulated at the accumulation part 14. An elastic body 34 is arranged at a side in an axial direction of the impeller 32. The elastic body 34 the circumferential surface of which is located at a side of the vane 44 rotates in the same direction as a rotating direction of the impeller 32. The paper sheets advancing between the vanes 44 of the impeller 32 and the elastic body 34 are held between them and are slowed down to alleviate a collision of the paper sheets with the clearance 46 bottom of the impeller 32. Even if the paper sheets arrive at the bottom which is formed between the vanes 44 of the impeller 32 and the elastic body 34, the elastic body 34 bends and a bottom position is moved in a base direction of the vanes 44 to prevent the paper sheets from being folded.

Description

  The present invention relates to a paper sheet stacking mechanism that stacks paper sheets using an impeller, and a paper sheet processing apparatus using the paper sheet stacking mechanism.

  Conventionally, an impeller having a plurality of blades around it is used, and the impeller rotates while entering and holding the paper sheets fed from the transport unit one by one in a gap formed between the blades of the rotating impeller. Accordingly, the paper sheets are lowered toward the stacking unit, and the descending paper sheets are brought into contact with the guide plate of the stacking unit and discharged from the gap of the impeller, so that the paper sheets are sequentially stacked on the stacking unit. There is a paper sheet processing apparatus equipped with a stacking mechanism (for example, see Patent Document 1).

  In such a stacking mechanism using an impeller, paper sheets are caused to enter the gap of the impeller by making the moving speed of the gap of the impeller slower than the conveying speed of the conveying unit reaching the impeller. Therefore, the paper sheets that have entered the gap of the impeller collide with the bottom of the gap. Due to this collision, the paper sheets may bounce back and become misaligned, resulting in poor stacking, or collision noise may be generated and become noise. This collision may be a guide plate instead of the bottom of the gap.

  There is also a stacking mechanism that decelerates paper sheets entering the gap between the impellers using a guide plate. The guide plate of this stacking mechanism is disposed so that the position of the bottom of the impeller gap gradually moves toward the center of the impeller. Therefore, since the peripheral speed of the impeller is faster, the difference between the moving speed of the paper sheet and the moving speed of the bottom of the impeller gap (guide plate) is small, and the impeller is moved along the guide plate. By gradually decreasing the moving speed of the bottom of the gap, the paper sheets are prevented from rebounding due to the collision between the paper sheets and the bottom of the impeller gap (see, for example, Patent Document 2). .

  However, if the paper sheets reach the bottom of the impeller gap before they come out of the transport unit, the paper sheets may bend and lead to poor stacking. Also, if you try to decelerate the paper sheet after it has left the transport section, the paper sheet has almost reached the bottom of the gap, forcing a rapid deceleration, which is not much different from a collision. It will be.

Republished WO2008 / 050462 Japanese Patent Laid-Open No. 61-226451

  The present invention has been made in view of such points, and a paper sheet stacking mechanism that can prevent generation of noise and occurrence of poor stacking of paper sheets due to collision between the bottom of the impeller gap and the paper sheets, It is another object of the present invention to provide a paper sheet processing apparatus using the paper sheet stacking mechanism.

  The paper sheet stacking mechanism according to claim 1 is configured such that a plurality of blades are provided around a gap through which a paper sheet fed from a transport unit can enter, and a rotating impeller and an axial direction of the impeller And an elastic body that is located on the side of the blade and rotates in the same direction as the rotation direction of the impeller.

  Thereby, since the paper sheets entering between the blades of the impeller and the elastic body can be sandwiched between them and decelerated, the collision between the bottom of the impeller gap and the paper sheets can be reduced, Further, even if the paper sheet reaches the bottom formed between the blade of the impeller and the elastic body, the elastic body is bent and the bottom position can be moved in the root direction of the blade. Therefore, the occurrence of poor accumulation of paper sheets due to the collision between the bottom of the impeller gap and the paper sheets can be reduced.

  The paper sheet stacking mechanism according to claim 2 is characterized in that in the paper sheet stacking mechanism according to claim 1, the impeller has a guide surface from which a blade of the impeller protrudes, and the guide surface enters the gap of the impeller. The rotating paper sheet is in contact with the guide plate, the paper sheet is discharged from the gap of the impeller and accumulated in the accumulating portion, and the peripheral surface of the elastic body is formed from the guide surface of the guide plate. It is what is projected.

  Thereby, the collision of the paper sheets to the bottom comprised by the blade | wing and guide surface of an impeller can be reduced.

  The paper sheet stacking mechanism according to claim 3 is the paper sheet stacking mechanism according to claim 1 or 2, wherein the peripheral speed of the elastic body is slower than the peripheral speed of the blade tip of the impeller, and the impeller It is faster than the peripheral speed of the bottom of the gap formed between the blades.

  Thereby, the paper sheets entering between the blades of the impeller and the elastic body can be reliably decelerated, and the collision between the bottom of the gap of the impeller and the paper sheets can be reliably reduced.

  The paper sheet stacking mechanism according to claim 4 is the paper sheet stacking mechanism according to claim 2, wherein the peripheral speed of the elastic body is slower than the peripheral speed of the tip of the blade of the impeller, and the blade of the impeller And the peripheral speed at the bottom of the gap formed between the guide plate and the guide plate.

  Thereby, the paper sheets entering between the blades of the impeller and the elastic body can be surely decelerated, and the collision of the paper sheets to the bottom constituted by the blades of the impeller and the guide surface is reliably reduced. be able to.

  The paper sheet stacking mechanism according to claim 5 is the paper sheet stacking mechanism according to any one of claims 1 to 4, wherein the impeller driving means includes a drive unit that rotationally drives the impeller, and the impeller drive. And an elastic body driving means for rotating the elastic body when a driving force is transmitted from the means.

  Accordingly, the elastic body can be rotationally driven by the elastic body driving means using the driving portion of the impeller driving means, and the configuration can be simplified.

  The paper sheet stacking mechanism according to claim 6 is the paper sheet stacking mechanism according to any one of claims 1 to 4, wherein the elastic body is an annular belt, and an inner periphery side of the belt is in contact with the elastic body. A circumferential rotating body, and an outer circumferential rotating body that contacts the outer circumferential side of the belt and sandwiches the belt between the inner circumferential rotating body and an elastic body driving unit that rotates the belt. It is what.

  Thereby, the paper sheets entering between the blades of the impeller and the belt can be sandwiched between them and reliably decelerated, and further, the paper sheets on the bottom formed between the blades of the impeller and the belt. Even when the belt reaches, the belt can be bent and the bottom position can be moved in the direction of the root of the blade.

  The paper sheet processing apparatus according to claim 7 conveys and sends out paper sheets, a stacking unit that stacks paper sheets, and stacks paper sheets sent from the transport unit in the stacking unit. The paper sheet stacking mechanism according to any one of claims 1 to 6 is provided.

  As a result, it is possible to reduce paper sheet stacking failure and noise generation.

  ADVANTAGE OF THE INVENTION According to this invention, generation | occurrence | production of the noise by the collision of the bottom of the clearance gap of an impeller and paper sheets and generation | occurrence | production of the paper sheet stacking failure can be reduced.

FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, showing the paper sheet stacking mechanism according to the first embodiment of the present invention. It is a front view of a paper sheet stacking mechanism same as the above. It is a perspective view of the paper sheet processing apparatus using the same paper sheet stacking mechanism. FIG. 6 is a cross-sectional view showing the stacking operation in the order of (a) to (c) when the rotational speed of the elastic body of the paper sheet stacking mechanism is set to be slow. It is sectional drawing which shows stacking operation in order of the rotation speed of the elastic body of a paper sheet stacking mechanism same as the above in order of (a)-(c). It is a one part front view of the paper sheet stacking mechanism which shows the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 5 show a first embodiment.

  First, FIG. 3 shows a perspective view of the paper sheet processing apparatus 11. The paper sheet processing apparatus 11 is, for example, a paper sheet counter that counts paper sheets and is a banknote counter that counts banknotes as paper sheets.

  The paper sheet processing apparatus 11 has a housing 12, and a hopper unit 13 for arranging paper sheets to be counted in a stacked state is formed in the upper front portion of the housing 12. A stacking unit 14 is formed in which paper sheets to be counted that have been identified and counted in the body 12 are sent out and accumulated, and paper sheets that are not counted are sent out above the stacking unit 14. An integrated reject unit 15 is formed, and an operation unit 16 for inputting processing information and a display unit 17 for displaying processing status are formed between the hopper unit 13 and the reject unit 15 on the front surface of the housing 12. ing. At the front end of the stacking section 14, a support section 18 that supports the surface of the paper sheets stacked on the stacking section 14 is disposed so as to protrude.

  In the housing 12, a feeding mechanism that feeds the sheets arranged in the hopper unit 13 one by one into the inside, and a transport unit 19 that transports the fed sheets to the stacking unit 14 or the reject unit 15. (A part of the transport unit is shown in FIG. 1), an identification unit for identifying whether the paper sheet is to be counted from the type or authenticity of the paper transported by the transport unit 19, and transport by the transport unit 19 according to the identification result A sorting mechanism that sorts the sheets to be collected into the stacking unit 14 or the reject unit 15, a counting sensor that counts the sheets to be counted that are sorted into the stacking unit 14, and one sheet at a time from the transport unit 19 toward the stacking unit 14 A paper sheet stacking mechanism 20 for stacking the paper sheets to be sent out on the stacking unit 14 is disposed.

  When the paper sheets are rectangular like banknotes, the paper sheets are arranged in the hopper unit 13 with the short direction facing the front-rear direction of the housing 12 and the longitudinal direction facing the left-right direction of the housing 12, respectively. From the unit 13, the sheet is fed into the transport unit 19 in the short direction, and is transported in the short direction by the transport unit 19 for processing.

  Next, FIGS. 1 and 2 show the configuration of the paper sheet stacking mechanism 20. 1 is a cross-sectional view taken along line AA in FIG. 2, and FIG. 2 is a front view.

  A paper sheet stacking mechanism 20 is disposed between the outlet 25 for sending the paper sheets of the upper transport unit 19 and the lower stacking unit 14. A pair of delivery rollers 26 that sandwich and feed paper sheets are disposed at the delivery port 25 of the transport unit 19.

  The paper sheet stacking mechanism 20 includes a frame 31, a pair of impellers 32 that are rotatably supported by the frame 31, impeller driving means 33 that rotationally drives the impellers 32 in one direction, and a pair of impellers. A pair of elastic bodies 34 disposed between 32, elastic body driving means 35 that rotationally drives the elastic bodies 34 in one direction, a guide plate 36 that continues to the stacking portion 14, and the like.

  The frame 31 includes a bottom plate 39 and side plates 40 raised from both sides of the bottom plate 39, and the bottom plate 39 is fixed to the bottom of the housing 12.

  Each impeller 32 includes a wheel portion 43 and a plurality of blades 44 protruding from the peripheral surface of the wheel portion 43. The blade 44 has a root portion 45 that protrudes in the radial direction from the wheel portion 43, protrudes from the root portion 45 in a direction opposite to the rotational direction of the impeller 32, and has a thickness toward the tip. It is formed to be thinner and narrower. A gap 46 is formed between the adjacent blades 44 to allow paper sheets to enter.

  The impeller driving means 33 is attached with an interval in the axial direction (a direction along the central axis of the rotation shaft 49 is called an axial direction) so as to rotate the pair of impellers 32 integrally. A rotating shaft 49 is provided, and the rotating shaft 49 is rotatably supported on both side plates 40 of the frame 31. A drive unit 50 that rotationally drives the rotary shaft 49 is attached to the outside of one side plate 40. The drive unit 50 includes a motor as a drive source and a speed reduction mechanism that transmits the drive force of the motor to the rotary shaft 49. Then, the impeller driving means 33 rotates the blades 44 so as to move from the outlet 25 of the upper transport unit 19 toward the lower stacking unit 14 on the front side of the impeller 32. The peripheral speed of the impeller 32 is set to be slower than the transport speed of the paper sheets by the transport unit 19.

  Each elastic body 34 is arranged between the two impellers 32 along the axial side of each impeller 32, and is an annular belt, for example, constituted by a V-belt having a substantially V-shaped cross section. Has been. In the case of the V belt, the peripheral surface is formed flat in the width direction, and the inner peripheral side is formed in a V shape. The elastic body 34 is made of, for example, rubber, and can be maintained in an annular shape during rotation due to its material and cross-sectional shape, and has a flexibility that enables elastic deformation by pressing from the peripheral surface. .

  The elastic body driving means 35 includes a cylindrical body 53 that is attached so as to rotate integrally with the rotation shaft 49 of the impeller 32, and is provided at both ends in the axial direction of the cylindrical body 53 with a space therebetween. A pair of inner circumferential rotating bodies 54 that contact the circumferential side, and an inner circumferential rotating body 54 that comes into contact with the outer circumferential side of the elastic body 34 from the rear side opposite to the accumulation portion 14 in the inner circumferential rotating body 54. The outer peripheral side rotating body 55 sandwiches the elastic body 34 therebetween.

  The inner peripheral side rotating body 54 is formed by a pulley having a groove portion 56 having a substantially V-shaped cross section on the peripheral surface corresponding to the case where the elastic body 34 is a V-belt, and the inner peripheral side of the elastic body 34 is located in the groove portion 56. The position of the elastic body 34 in the axial direction is regulated by fitting and sandwiching the elastic body 34 between the groove 56 and the outer peripheral side rotating body 55. Further, the inner peripheral side rotating body 54 is disposed concentrically with the impeller 32 around the rotation shaft 49, and is formed to have the same diameter as or the same diameter as the diameter of the wheel portion 43 of the impeller 32. The outer diameter of the peripheral surface of the elastic body 34 fitted into the wheel is configured to be larger than the outer diameter of the wheel portion 43 of the impeller 32.

  The outer peripheral rotating body 55 is formed by one cylindrical roller having an axial length extending over both inner peripheral rotating bodies 54, and each elastic body 34 is attached to each inner peripheral rotating body 54. Each can be pressed and inserted. The outer peripheral side rotator 55 is rotatable about a rotating shaft 57 and is supported by pressing means 58 via the rotating shaft 57. The pressing means 58 has an attachment member 59 attached between the side plates 40 of the frame 31 and a leaf spring 60 attached to the attachment member 59. Side plates 61 are bent from the upper end sides of the leaf spring 60 toward the front side, and the rotating shafts 57 of the outer peripheral rotating body 55 are rotatably supported by these side plates 61. Then, the elastic body 34 is pressed against the inner peripheral rotating body 54 by the outer peripheral rotating body 55 by the spring force of the leaf spring 60.

  The elastic body driving means 35 does not include a dedicated drive source, and rotates the elastic body 34 by rotating the inner peripheral side rotating body 54 integrally with the rotating shaft 49 of the impeller 32, that is, a driving unit. The elastic body 34 is rotated using the driving force from 50.

  Further, the guide plate 36 has a guide surface 64 that is inclined from the delivery port 25 of the upper transport unit 19 to the lower stacking unit 14, and each impeller 32, each elastic body 34, An opening 65 is formed in which the cylindrical body 53 and the inner circumferential side rotating body 54 are rotatably arranged.

  On the front side of the guide surface 64, a part of the front side of the wheel portion 43 and the blade 44 of the impeller 32 protrudes, and a part of the front side of the elastic body 34 and the inner peripheral side rotating body 54 protrudes. ing.

  Next, the operation of the present embodiment will be described.

  First, the overall operation of the sheet processing apparatus 11 will be described with reference to FIG.

  The stacked paper sheets to be counted are arranged in the hopper 13 with the short direction facing the front-rear direction of the housing 12, and the operation unit 16 operates to start counting.

  As a result, the paper sheets arranged in the hopper 13 are fed one by one to the transport unit 19 and are identified by the identification unit while transporting the paper sheets by the transport unit 19, and the paper sheets identified as counting objects Is counted by a counting sensor, sent out from the delivery port 25 of the transport unit 19 toward the stacking unit 14, and stacked on the stacking unit 14 by the paper sheet stacking mechanism 20. The count value counted by the count sensor is displayed on the display unit 17.

  Further, the paper sheets that are not identified as the counting target are sent from the transport unit 19 to the reject unit 15 and accumulated.

  Next, the operation of the paper sheet stacking mechanism 20 will be described with reference to FIG.

  When the operation of the paper sheet processing apparatus 11 is started, the drive unit 50 starts to rotate the rotating shaft 49, the impeller 32 rotates, and the inner peripheral side rotating body 54 and the elastic body 34 are integrated with the impeller 32. It rotates in the same direction as the impeller 32.

  At this time, the peripheral speed of the impeller 32 is set to be slower than the conveyance speed of the paper sheets by the conveyance unit 19. The peripheral speed of the elastic body 34 is slower than the peripheral speed of the tip of the blade 44 of the impeller 32, and from the peripheral speed of the bottom surface formed between the blade 44 and the blade 44 of the impeller 32, that is, the peripheral surface of the wheel portion 43. It is set to be faster. As an example, the conveying speed of the paper sheet by the conveying unit 19 is 2800 mm / s, the rotational speed of the impeller 32 is 130 rpm, the peripheral speed of the tip of the blade 44 is 680 mm / s, and the peripheral speed of the bottom of the blade 44 is 326 mm. / S, and the peripheral speed of the elastic body 34 is 327 mm / s. And the peripheral speed of the elastic body 34 shown in FIG. 4 is close to the peripheral speed at the bottom of the blade 44 within the range of the peripheral speed between the peripheral speed at the tip of the blade 44 and the peripheral speed at the bottom of the blade 44. The setting is slow.

  As shown in FIG. 4A, the rotating elastic body 34 is maintained in a substantially annular shape by the centrifugal force due to rotation before coming into contact with the paper sheet P, and protrudes forward from the guide surface 64. The peripheral surface of the elastic body 34 is located on the side part of the intermediate position between the root and the tip of the blade 44 of the impeller 32 that similarly projects forward from the guide surface 64, and from the inner peripheral side rotating body 54. Rotating in the same direction together with the impeller 32 in a separated and free state.

  Then, as shown in FIG. 4 (a), when the paper sheet P is sent out from the delivery port 25 of the transport unit 19, the paper sheet P becomes a gap 46 between the blade 44 and the blade 44 of the impeller 32. Enter. Since the speed of the paper sheet P delivered from the delivery port 25 of the transport unit 19 is faster than the peripheral speed of the impeller 32, the paper sheet P continues to enter toward the bottom of the gap 46, and the leading edge of the paper sheet P The edge (one edge of the long side of the paper sheet P) contacts the elastic body 34, that is, reaches the bottom formed between the blade 44 and the elastic body 34 that are the bottom of the current gap 46. At this time, the rear end of the paper sheet P in the sending direction is located between the pair of sending rollers 26 of the transport unit 19 and the transport action for the paper sheet P continues.

  As shown in FIG. 4B, when the leading edge of the paper sheet P contacts the elastic body 34, the elastic body 34 is deflected by being pushed by the paper sheet P, and the paper sheet P moves to the bottom of the gap 46. Allow to continue to approach. The paper sheet P that continues to enter is in a state of being sandwiched between the blades 44 and the elastic body 34, resistance is generated in the entry of the paper sheet P, and the speed on the leading end side of the paper sheet P is gradually reduced. By flapping the paper sheet P between the blade 44 and the elastic body 34, flapping of the paper sheet P is suppressed.

  As shown in FIG. 4 (c), when the rear end of the paper sheet P in the feeding direction comes out from between the pair of sending rollers 26 of the transport unit 19, there is no transporting action on the paper sheet P. The speed of the paper sheet P is rapidly reduced by the resistance caused by the pinching between the paper 34 and the paper 34. As a result, the speed of the paper sheet P can be reduced to the same level as the peripheral speed of the blades 44 and the elastic body 34.

  Even if the leading edge of the paper sheet P reaches the bottom between the blades 44 and 44 of the impeller 32 and collides, the speed of the paper sheet P is sufficiently reduced, The generation of noise accompanying the collision of the paper sheet P can be reduced, and the rebound of the paper sheet P can be reduced. In addition, since the outer diameter of the elastic body 34 fitted into the inner circumferential rotating body 54 is larger than the outer diameter of the wheel portion 43 of the impeller 32, the bottom between the blade 44 and the blade 44 of the impeller 32 is larger. Becomes the peripheral surface of the elastic body 34, and it is possible to enhance the effect of reducing the generation of noise due to the collision of the paper sheet P and the rebound of the paper sheet P.

  Thereafter, the leading edge of the rotating paper sheet P entering the gap 46 of the impeller 32 collides with the guide surface 64, the rotation of the paper sheet P is prevented, and the blade 44 on the rear side in the rotational direction of the impeller 32 is blocked. While pushing the paper sheet P toward the stacking portion 14, the leading edge of the paper sheet P slides on the guide surface 64 toward the stacking portion 14 and is relative to the gap 46 of the impeller 32 that continues to rotate. Go out to.

  Then, the paper sheet P that relatively leaves the gap 46 of the impeller 32 that continues to rotate is pushed toward the accumulating unit 14 by the vanes 44 of the impeller 32 and accumulated in the accumulating unit 14.

  Thus, according to the paper sheet stacking mechanism 20, the paper sheet P entering between the blade 44 and the elastic body 34 of the impeller 32 can be sandwiched between them and decelerated. The collision between the bottom of the paper 46 and the paper sheet P can be eliminated or reduced, the generation of noise due to the collision between the bottom of the gap 46 of the impeller 32 and the paper sheet P can be suppressed, and the impeller 32 can be suppressed. The rebound of the paper sheet P due to the collision between the bottom of the gap 46 and the paper sheet P can be reduced, and the occurrence of the accumulation failure of the paper sheet P can be reduced. In addition, the paper sheet P is sandwiched between the blades 44 and the elastic body 34, so that the paper sheet P can be prevented from fluttering, and the occurrence of noise and accumulation failure due to the flapping can be reduced.

  Further, even when the paper sheet P reaches the bottom formed between the blade 44 of the impeller 32 and the elastic body 34, the elastic body 34 is bent and the position of the bottom can be moved in the root direction of the blade 44. The paper sheet P fed out from the transport unit 19 is not bent, and coupled with the fact that the paper sheet P can be prevented from rebounding due to the collision between the bottom of the gap 46 of the impeller 32 and the paper sheet P. The accumulation failure of the leaf P can be prevented.

  Further, since the peripheral surface of the elastic body 34 is projected from the guide surface 64 of the guide plate 36 together with the blade 44 of the impeller 32, the paper to the bottom constituted by the blade 44 of the impeller 32 and the guide surface 64 is provided. The collision of the leaves P can be reliably reduced.

  Further, the peripheral speed of the elastic body 34 is slower than the peripheral speed of the tip of the blade 44 of the impeller 32, and faster than the peripheral speed of the bottom of the gap 46 formed between the blade 44 and the blade 44 of the impeller 32. The sheet P entering between the blade 44 of the impeller 32 and the elastic body 34 can be surely decelerated, and the collision between the bottom of the gap 46 of the impeller 32 and the sheet P can be reliably reduced. it can.

  Similarly, the peripheral speed of the elastic body 34 is slower than the peripheral speed of the tip of the blade 44 of the impeller 32, and is lower than the peripheral speed of the bottom of the gap 46 formed between the blade 44 of the impeller 32 and the guide plate 36. Since it is fast, the paper sheet P entering between the blade 44 of the impeller 32 and the elastic body 34 can be surely decelerated, and the paper sheet to the bottom constituted by the blade 44 of the impeller P and the guide surface 64 P collision can be reliably reduced.

  Further, the elastic body driving means 35 can drive the elastic body 34 by utilizing the driving force from the driving unit 50 of the impeller driving means 33, and no dedicated drive source is required, and the configuration can be simplified.

  Further, since the elastic body 34 is an annular belt, the paper sheet P entering between the blade 44 of the impeller 32 and the belt can be sandwiched between them, and can be reliably decelerated. Even if the paper sheet P reaches the bottom formed between the blade 44 and the belt, the belt is bent and the bottom position can be reliably moved in the root direction of the blade 44.

  In addition, the paper sheet processing apparatus 11 using such a paper sheet stacking mechanism 20 generates noise due to the collision between the bottom of the gap 46 of the impeller 32 and the paper sheet P and the stacking failure of the paper sheets P. Generation can be reduced.

  5 shows that the peripheral speed of the elastic body 34 shown in FIG. 4 is within the range of the peripheral speed between the peripheral speed at the tip of the blade 44 and the peripheral speed at the bottom of the blade 44. The operation of the paper sheet stacking mechanism 20 in the case where the setting is close to the peripheral speed and slow while the setting is faster than the peripheral speed is shown. At this time, the peripheral speed of the impeller 32 is the same as in the case of FIG.

  In this case, the basic operation is the same as that shown in FIG. 4, but the elastic body 34 bends differently when the paper sheet P abuts due to the high peripheral speed of the elastic body 34. Compared with the case shown in FIG. 4, the paper sheet P is less decelerated and may collide with the guide surface 64 at a higher speed.

  Therefore, as shown in FIG. 4, the circumferential speed of the elastic body 34 is within the range of the circumferential speed between the circumferential speed at the tip of the blade 44 and the circumferential speed at the bottom of the blade 44. The noise reduction effect can be increased by setting the speed closer to the peripheral speed.

  FIG. 6 shows a second embodiment, and FIG. 6 is a front view of a part of the paper sheet stacking mechanism 20.

  This is the case of the paper sheet stacking mechanism 20 corresponding to the paper sheet processing apparatus 11 that transports and processes the paper sheet P in the longitudinal direction, and there is only one impeller 32. In this case, a pair of inner peripheral rotating bodies 54 are attached to the same rotating shaft 49 on both axial sides of the impeller 32, and a pair of elastic bodies 34 are disposed on the pair of inner rotating bodies 54, respectively. Each elastic body 34 is pressed against each inner side rotating body 54 by a pair of outer peripheral side rotating bodies 55.

  With this configuration, it is possible to prevent the pair of elastic bodies 34 from contacting the paper sheet P evenly, causing the paper sheet P to be offset and causing a stacking failure.

  The elastic body driving means 35 may use a dedicated drive source and arbitrarily set the peripheral speed of the elastic body 34.

  The elastic body 34 is not limited to the V belt, and may be a flat belt, a round belt, or the like, or may be a brush, urethane foam, or the like instead of the belt. The shape may be maintained so as to be positioned on the side portion of 44, and it is only necessary to have a flexibility that allows the paper sheet P to bend and bend when pressed.

  Further, the paper sheet stacking mechanism 20 is not limited to the paper sheet counter, and can be applied to other paper sheet processing apparatuses 11 that accompany the processing of stacking paper sheets.

11 Paper sheet processing equipment
14 Stacking unit
19 Transport section
20 Paper sheet accumulation mechanism
32 impeller
33 Impeller drive means
34 Elastic body
35 Elastic body drive means
36 Guide plate
44 feathers
46 Clearance
50 Drive unit
54 Inner circumference rotating body
55 Outer rotator
64 Guide surface P Paper sheets

Claims (7)

A plurality of blades are provided around the gap through which paper sheets sent out from the transport unit can enter, and a rotating impeller,
It is arranged on the side of the impeller in the axial direction, and has a peripheral surface located on the side of the blade and rotating in the same direction as the rotation direction of the impeller. Paper sheet accumulation mechanism. The impeller has a guide surface from which the impeller protrudes, and a rotating paper sheet that enters and enters the clearance of the impeller contacts the guide surface, and the paper sheet is discharged from the impeller clearance. A guide plate to be accumulated in the accumulation unit is provided,
The paper sheet stacking mechanism according to claim 1, wherein a peripheral surface of the elastic body protrudes from a guide surface of the guide plate. The peripheral speed of the elastic body is slower than the peripheral speed of the tip of the impeller blade, and is faster than the peripheral speed of the bottom of the gap formed between the blades of the impeller. The paper sheet accumulation mechanism according to 1 or 2. The peripheral speed of the elastic body is slower than the peripheral speed of the tip of the impeller blade, and faster than the peripheral speed of the bottom of the gap formed between the impeller blade and the guide plate. The paper sheet accumulation mechanism according to claim 2. Impeller driving means having a drive unit for rotationally driving the impeller;
The paper sheet stacking mechanism according to any one of claims 1 to 4, further comprising elastic body driving means for rotating the elastic body by driving force transmitted from the impeller driving means. The elastic body is an annular belt,
An inner peripheral rotating body that contacts the inner peripheral side of the belt and an outer peripheral rotating body that contacts the outer peripheral side of the belt and sandwiches the belt between the inner peripheral rotating body and the belt. The paper sheet stacking mechanism according to any one of claims 1 to 4, further comprising: an elastic body driving means. A transport unit that transports and delivers paper sheets;
An accumulating unit for accumulating paper sheets;
A paper sheet processing apparatus comprising: the paper sheet stacking mechanism according to claim 1, wherein the paper sheets fed from the transport unit are stacked on the stacking unit.

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