JP2020070167A - Sheet turning and conveying mechanism, front-back reversing mechanism, sheet processing device, and cash handling device - Google Patents

Abstract

To provide a sheet turning and conveying mechanism and a front-back reversing mechanism having stability, high reliability and long life capable of applying to sheets continuously conveyed with short conveying intervals, and to provide a sheet processing device capable of high speed processing with high stability using the same, an a cash handling device.SOLUTION: A sheet turning and conveying mechanism for conveying sheets has a turning conveying passage which conveys sheets so that the to-be-conveyed sheets turn around a shaft perpendicular to a conveyance surface on which the sheets are conveyed, and further, the turning conveying passage has roller conveying means for clamping and conveying the sheets to be conveyed with a conveying roller to be rotary driven and a pushing roll pushed by the conveying roller with a predefined pushing force, and at least one rotational axis of the conveying roller and the pushing roll passes the rotation center of a rotation path in the conveyance surface of the sheets and is arranged while inclining to the conveyance surface of the sheets, and further, the clamping surface of the conveying roller or the pushing roller arranged in an inclining manner is parallel to the conveyance surface of the sheets.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for performing a turning operation or a front-back reversing operation on a sheet during high-speed conveyance of a sheet such as a cut sheet or a bill.

  As the sheet processing apparatus, there are various apparatuses such as a printing apparatus, a banknote processing apparatus, and a ballot paper processing apparatus. In these single-wafer processing apparatuses that convey the single-wafers and perform various types of processing, a front-back reversing mechanism that reverses the front-back of the single-wafers is used. At present, there are two types of front and back reversing methods actually used in these devices: a "switchback method" (for example, Patent Document 1) and a "twist transfer method" (for example, Patent Document 2).

JP, 2017-207710, A JP-A-59-102750

  There are two types of front and back reversing mechanisms for reversing the front and back of a single sheet, a "switchback system" disclosed in Patent Document 1 and the like, and a "twist transfer system" disclosed in Patent Document 2 and the like. The "switchback method" disclosed in Patent Document 1 is a method widely used in printing devices such as printers. In this method, the conveyance direction of the conveyed single-wafer is switched back, that is, switched to the reverse direction, and in the plane of the single-wafer to be conveyed, it is rotated around an axis orthogonal to the conveying direction to perform the front-back reversing operation. It is a thing. In this method, since it is necessary to stop the sheet once to switch the conveying direction, it is difficult to apply it to the sheet continuously conveyed at a short conveying interval.

  On the other hand, the "twisted transport system" disclosed in Patent Document 2 rotates the transport path around an axis in the transport direction to switch the transport direction without changing the front and back of the single-wafers being transported. It realizes inversion. Since this method does not switch the transport direction, it can also be applied to single-wafers that are continuously transported at short transport intervals. However, it is difficult to form a transport path for rotating the transported single wafers around an axis in the transport direction, and it is difficult to realize stable transport. In Patent Document 2, a twisted belt is used to realize a transport path that rotates around an axis in the transport direction. This method, which uses a torsion belt, is a configuration that is widely used in the "twist transfer method," but it is difficult to secure a stable holding force for the sheets sandwiched by the torsion belt, and the posture becomes unstable. Cheap. Further, there is a problem that the life of the twisted belt is short.

  It is an object of the present invention to provide a stable, highly reliable and long-life single-wafer rotating / conveying mechanism and a front / back reversing mechanism that can be applied to continuously-conveying single-wafers with a short conveying interval, and high stability using the same. An object of the present invention is to provide a single-wafer processing apparatus and a cash handling apparatus capable of performing high-speed processing with high performance.

  A single-wafer turning / conveying mechanism according to an aspect of the present invention is a single-wafer turning / conveying mechanism that transfers single-wafers, and that is conveyed around an axis perpendicular to a conveying surface that conveys single-wafers. The sheet has a swivel transport path for transporting the leaves to rotate, and the swirl transport path is a transport roller that is rotationally driven and a pressing roll that is pressed by the transport roller with a predetermined pressing force, and the sheet to be transported. A roller conveying means for nipping and conveying the sheet, wherein at least one of the conveying roller and the pressing roll has a rotation axis passing through a rotation center of a rotation path in a sheet conveying surface, and conveying the sheet. A single-wafer swivel, which is arranged to be inclined with respect to a plane, and a sandwiching surface of the obliquely arranged conveying rollers or pressing rollers is parallel to the conveying surface of the single wafer. It is configured as a transport mechanism.

  According to one aspect of the present invention, a stable, highly reliable, and long-life single-wafer rotating / conveying mechanism and a front / back reversing mechanism applicable to continuously-conveying single-wafers at short conveying intervals are provided. It is possible to provide a single-wafer processing apparatus having high stability and capable of high-speed processing.

It is a figure for demonstrating one Example of the front-back reversal conveyance mechanism. It is a figure for demonstrating one Example of the rotation conveyance mechanism part around an out-of-plane axis. It is a figure which shows one Example of the rotation conveyance part structure of the periphery of the axis | shaft orthogonal to a conveyance direction in the conveyance surface of a sheet. It is a figure for explaining one example about a drive system of a rotation conveyance mechanism part around an out-of-plane axis. It is a figure for demonstrating the front and back reversal operation of the sheet in the conventional twist conveyance. It is a figure for demonstrating the front-back reversal operation of a sheet. It is a figure for explaining other examples of composition of an inside-outside conveyance mechanism.

  Hereinafter, embodiments will be described in detail with reference to the drawings. However, the present invention should not be construed as being limited to the description of the embodiments below. It is easily understood by those skilled in the art that the specific configuration can be changed without departing from the idea or the spirit of the present invention.

  In the structures of the invention described below, the same reference numerals are commonly used in different drawings for the same portions or portions having similar functions, and redundant description may be omitted.

  The notations such as “first”, “second”, and “third” in this specification and the like are provided for identifying components and do not necessarily limit the number or order. Further, the numbers for identifying the constituent elements are used for each context, and the numbers used in one context do not always indicate the same configuration in other contexts. In addition, it does not prevent that a component identified by a certain number also has a function of a component identified by another number.

  The position, size, shape, range, etc. of each component shown in the drawings and the like may not represent the actual position, size, shape, range, etc. in order to facilitate understanding of the invention. Therefore, the present invention is not necessarily limited to the position, size, shape, range, etc. disclosed in the drawings and the like.

  In the present specification, a component in the singular form includes the plural form unless the context clearly dictates otherwise.

  This embodiment will be described with reference to FIGS. 1 to 6. As a method of reversing the front and back of the sheet being conveyed, there are the "switchback method" and the "twist method" shown in the above-mentioned known example. In a single-wafer processing apparatus that performs various kinds of processing on continuously conveyed single-wafers, it is required that the conveyance speed does not decrease due to the reversing operation and that the conveying directions of the single-wafers before and after the reversal are the same.

  In the switchback method, the conveying direction of the conveyed sheets is switched back, that is, reversed, so that the conveying speed is reduced. It is not preferable for a single-wafer processing apparatus that is continuously conveyed because it causes a decrease in processing speed. On the other hand, since the twist method reverses the front and back while maintaining the conveyance speed, it can be said that the twist method is a front and back reversal method that does not affect the processing speed of the continuously conveyed sheet processing apparatus.

  FIG. 5 is a schematic diagram for explaining the behavior of the single-wafers 37 during conveyance in the twist system. The three arrow axes 36 of X, Y, and Z indicate the coordinate axes of the space. An arrow 40 indicates a transportation route of single-wafers. The single-wafer transport route indicated by arrow 40 is a straight line parallel to the X axis. Further, the single-wafers being conveyed are rotated by 180 degrees about the rotation axis 41 parallel to the conveyance direction, that is, the X axis. In the figure, ○ 39 and the broken line and ● 38 and the broken line indicate the loci on the left and right outside of the single leaf in the direction orthogonal to the conveying direction of the single leaf in order to facilitate understanding of the behavior of the single leaf. And schematically shows the shape of the transport surface when forming a transport path for single-wafers. In this method, the transport surface is twisted in a spiral shape.

  With this method, the front and back can be reversed while maintaining the transport speed, but the behavior of the single-wafers during transport tends to become unstable because a spiral twist transport surface is required. Many twist systems that are currently used in actual machines form a twisted transport surface by twisting a pair of transport belts, but this has the problems of a complicated belt tensioning structure and a short belt life. .. Further, there is a problem that a jam is likely to occur in the twisted conveyance path and the maintainability is difficult due to the complicated belt stretching structure. The present embodiment provides a new system that solves these problems as a front-back reversing mechanism for a continuously conveyed sheet processing apparatus.

  FIG. 6 is a schematic diagram for explaining an example of the behavior of the sheets 37 during conveyance in the new front-back reversal method of this embodiment. Similar to FIG. 5, the three arrow axes 36 of X, Y, and Z indicate the coordinate axes of the space. Further, an arrow 40 indicates a transportation route of single-wafers. The reversal of the front and back of the sheet is performed by the following procedure.

  First, 90-degree rotation conveyance 44 is performed around a rotation axis 43 parallel to the Z axis perpendicular to the surface of the sheet to be conveyed. Then, when the transport direction becomes the Y-axis direction, 180-degree rotary transport 46 is performed around the rotation axis 45 in the X-axis direction that is orthogonal to the transport direction in the plane of the sheet. Finally, it is again rotated and conveyed 48 at 90 degrees around a rotation axis 47 parallel to the Z axis perpendicular to the surface of the leaf. By performing such a conveyance operation, it is possible to reverse the front and back of the sheet being conveyed, as in the case of reversing the front and back by the spiral conveyance path described in FIG.

  In this method, since no switchback is required, it is possible to reverse the front and back without reducing the transport speed. Further, unlike the twist method, this method does not require rotation about an axis parallel to the conveying direction, that is, a spiral conveying path, so that the conveying is stable. Further, there is no problem in life due to a torsion belt or the like.

  FIG. 1 is a diagram showing an aspect of a transport path configuration of a front / back reversing transport mechanism section in which the front / back reversing method of the present embodiment described in FIG. 6 is actually applied. In the figure, an arrow 5 indicates a transportation route for single-wafers. The transportation of the sheet is performed by sandwiching the sheet with a pair of upper and lower rollers. In the figure, a conveyance roller 4 is arranged along a sheet conveyance route (arrow 5). The conveying roller 4 is composed of one or more rollers that sandwich the sheet on the rotating shaft. Since FIG. 1 is a schematic view of the conveying path as seen from above, the opposing rollers that sandwich the sheet are illustrated. It is the lower side of the roller and is not shown.

  In the conveyance path of FIG. 1, the single-wafers 1 conveyed from the upper side in the figure are conveyed by an axis perpendicular to the conveyance surface (43 axes in FIG. 6) by the seven meshed roller portions 6 that form the turning conveyance path. Change the conveyance direction by 90 degrees (corresponding to the equivalent) (first 1st axis rotation conveyance path). After that, by transporting around the large-diameter roller 24 in the portion of the transport path 9 provided on the downstream side, which is the exit of the sheets transported by changing the transport direction by the roller portion 6, the transport direction in the transport surface is obtained. 180 degrees around an axis orthogonal to (corresponding to the 45 axis in FIG. 6) (second axis rotation conveyance path). Finally, in the portion of the conveying path 10 provided on the downstream side that serves as an outlet for the single-wafers conveyed by changing the conveying direction by the large-diameter roller 24, an axis perpendicular to the conveying surface (equivalent to 47 axis in FIG. 6) Change the conveying direction 90 degrees around (the second 1st axis rotation conveying path). By configuring the transport surface in this manner, the transported sheet 2 can be turned upside down.

  That is, the above-mentioned front-back reversing method is carried in the single wafer transport surface together with the first axis rotation transport path formed of the single wafer swivel transport mechanism used in the single wafer processing apparatus for transporting and processing the single wafer. At least one second axis rotary transport path that is a swivel transport path that transports the single-wafers so as to rotate on an axis perpendicular to the direction is provided, and one or more first axis rotary transport paths and one or more first axis rotary transport paths. By setting the sum of the rotation angles of the single-wafer conveyance by the two-axis rotary conveyance path to be 180 degrees, it is possible to realize a single-wafer front / back reversing mechanism for reversing the front / back of the single wafer.

  The front and back reversing mechanism of the present embodiment has a structure in which a plurality of such rotary conveying paths are combined, but compared to the structure of the conventional front and back reversing conveying mechanism that requires a conventional belt to be stretched in a spiral manner. In fact, it can be an equivalent or simpler structure. Also, with regard to the reverse size of the front and back sides, the 90 ° rotating conveyance path is combined vertically, so some space is required in the width direction, but there is no need for a belt stretching space, so the front and back sides are relatively compact. The reverse transport mechanism section can be formed.

  In the front-back reversing conveyance mechanism section, it is necessary for the pre-conveying sheets to be reversed in the conveyance path and the conveyance direction without causing skew (rotational deviation) or shift (conveyance position deviation). is there. In the front-back reversing transport mechanism of the present embodiment, the transport is performed when passing through the rotary transport path section (the transport path section shown by the transport roller group 6 and the transport roller group 10 in the figure) on the axis perpendicular to the transport surface. Postures such as skew and shift are likely to occur in the single leaf. Therefore, the rotary conveyance path portions 6 and 10 on the axis perpendicular to the conveyance surface according to the present embodiment have a structure in which the conveyed sheets are less likely to undergo posture variations such as skew and shift.

  FIG. 2 is a diagram showing a cross-sectional structure of the rotary conveyance path portions 6 and 10 along the axis perpendicular to the conveyance surface in this embodiment. The transport surface of the single-wafers is the portion indicated by the alternate long and short dash line 17 in the figure. A guide plate 18 that guides the end of the sheet to be conveyed is arranged below the conveying surface. In the transport path shown in the figure, the rotation center 33 of the rotary transport path for single-wafers is located on the left side of the figure. As shown in the figure, the rotary shaft 13 of the transport roller for transporting the inclined single-wafers is inclined downward from the rotation center 33 toward the outer side of the transport surface 17, and the extension line 26 of the center of the rotation shaft is The transport surface 17 is extended and intersects at the rotation center 33 of the transport path of the single-wafers to be transported.

  Further, the conveying roller 20 installed on the rotating shaft 13 of the inclined conveying roller is a conveying roller 20 having an inclined surface obtained by cutting out a part of a conical shape 35 having the rotation center 33 of the rotation conveying path of the single sheet at the apex. I arranged two. The conveying roller having the conical conveying roller and having an inclined rotation axis is rotationally driven by a drive motor or a conical gear 14 connected thereto. The pressure roller 15 is arranged so as to face the conveying roller 20 having each inclined surface, and is pressed against the inclined surface of the conveying roller 20 with a predetermined pressure by means 16 such as a spring on the conveying roller side.

  That is, in the single-wafer rotating / conveying mechanism for transferring the single-wafers, the single-wafers to be transferred are rotated about an axis (eg, 43 axis in FIG. 6) perpendicular to the transfer surface for transferring the single-wafers. In addition to having a revolving conveyance path (for example, the above-mentioned first first axis rotation conveyance path) for conveying to the inside, the revolving conveyance path is a conveyance roller (for example, the conveyance roller 20) that is rotationally driven and a predetermined pushing force for the conveyance roller. A pressing roll (for example, pressing roll 15) pressed by pressure has a roller conveying means for nipping and conveying the sheet to be conveyed, and at least one rotation axis of the conveying roller or the pressing roll conveys the sheet. It is arranged so as to pass through the center of rotation (for example, the center of rotation 33) of the in-plane rotation path and is inclined with respect to the sheet conveying surface, and to sandwich the inclined conveying rollers or pressing rollers. The surface is parallel to the transport surface of the single wafer. Is becoming

  The pressure roller 15 is an elastic roller having a curved contact surface, and conveys the sheet by sandwiching the sheet to be conveyed with the conveying roller 20. For example, the single-wafer turning transport mechanism is configured such that the rotary shaft (for example, the rotary shaft 13) is inclined with respect to the single-wafer transport surface, and the transport roller includes a plane sandwiching surface parallel to the transport surface. The pressing roller having a contact surface with a curved cross section is configured to sandwich and convey the sheet. In this configuration, the difference in the diameter of the two conveying rollers 20 having the inclined surface gives a difference in the conveying speed at the nipping point of the conveyed sheet, thereby rotating and conveying the sheet. The center of rotation of the rotary transport orbit is the center of rotation 33 in the figure. In order to ensure the accuracy of the center of rotation when conveying a single sheet, the inclination of the conveying shaft, the shape accuracy of a conveying roller having a conical outer shape, and the nipping position of the single sheet are important. A curved surface is used as the contact surface of the pressing roll 15 of this embodiment in order to ensure the accuracy of the nipping position of the sheets. By making the contact surface of the pressing roll 15 a curved surface, the sandwiching portion of the sheet becomes close to line contact or point contact, and the speed difference between the left and right sandwiching rollers is accurately transmitted to the transported sheet. it can.

  FIG. 3 is a diagram showing a cross section of a portion of the transport path 9 in the embodiment of FIG. In the structure of the present embodiment, a conveying path structure using the large-diameter roller 24 is shown as a method of rotating and conveying single-wafers by 180 degrees around an axis orthogonal to the conveying direction in the conveying plane. Three pressing rollers 23 are arranged around the large-diameter roller 24. The large-diameter roller 24 and the pressing roller 23 sandwich and convey the sheet, so that the sheet is conveyed along the route of the arrow 22 and is rotated by 180 degrees. As described above, by adopting a structure in which the single-wafers are nipped and conveyed around the large-diameter roller 24, it is possible to configure a relatively thin 180-degree rotation conveyance.

  FIG. 4 is a diagram for explaining the drive configuration of the rotary transport path portions 6 and 10 on the axis perpendicular to the transport surface in this embodiment. In the configuration of the figure, with respect to six of the transport roller drive shafts of the rotary transport unit, the drive gear 25 having a conical surface is arranged, and the drive gears 25 are connected by the intermediate gear 27 having a conical surface. did. With such a structure, the drive shaft of the rotary conveyance path can be driven by one drive motor. Further, the transport shaft 26 of each drive gear 25 is arranged around the rotation center 33 of the rotary transport orbit of the single-wafers, as in the cross-sectional view of FIG. By adopting such a structure for the transport roller, it was possible to transport the single-wafers by rotary transport with almost the same stability as linear transport.

  Further, in this embodiment, in order to stabilize the transporting posture of the single-wafers, the pressing force for sandwiching the single-wafers is changed at the entrance of the main transporting path to the rotary transporting path. At the portion where the linear transport path transfers between the transport rollers of the rotary transport path sections 6 and 10 on the axis perpendicular to the transport surface, the sheets to be transported are the transport rollers of the straight transport path and the transport rollers of the rotary transport section. Are clamped at the same time. In other words, the conveyance rollers of the linear conveyance path and the conveyance rollers of the rotary conveyance unit are provided with a space of about the width of the sheet to be conveyed in the conveyance direction. The leaves are pinched at the same time.

  Since the conveying speed of the left and right conveying rollers of the conveying rollers on the straight conveying path is constant, a force is applied so that the sandwiched sheets are conveyed straight. However, the conveyance rollers of the rotary conveyance unit have a difference in conveyance speed between the left and right conveyance rollers, so that a force for rotating the sandwiched sheets is generated. For this reason, there is a problem that the change in the posture of the conveyed single-wafers tends to be unstable when the straight conveying path and the rotary conveying unit are delivered. Therefore, in the transport path of the present embodiment, the pressing force of the first transport rollers 7 and 11 of the rotary transport path and the first rollers 8 and 12 of the straight transport path are several times as high as those of the other transport rollers. High clamping pressure was set. That is, the sandwiching force between the transport roller and the pressure roller provided in the straight transport path and the delivery portion of the rotary transport unit is the sandwiching force between the transport roller and the pressure roller provided in the portion other than the delivery portion. It is set to be several times higher than.

  In other words, in any one of the single-wafer turning transport mechanism or the straight-line transport mechanism, which is arranged at the connection portion between the single-wafer turning transport mechanism and the straight-line transport mechanism that linearly transports the single-wafers. The default contact pressure of the transport rollers (for example, the transport rollers 7 and 11) and the pressing roll (for example, the pressing roll 15) is pressed against the transport rollers around the connection portion (for example, the rollers other than the transport rollers 7 and 11). It is set to be higher or lower than the predetermined contact pressing force of the rolls (for example, rolls other than the pressing roll 15).

  By doing so, the sheets to be conveyed behave immediately according to the speed of the roller side having a high clamping force immediately after entering the rotary conveyance section and the straight conveyance path, and thus, the straight conveyance path and It is possible to minimize the destabilization of the single-wafers in the rotary transport unit.

  By making the pressing force of the first conveying rollers 7 and 11 of the rotary conveying path and the first rollers 8 and 12 of the straight conveying path lower than those of the other conveying rollers, it is possible to separate the sheets in the linear conveying path and the rotating conveying section. Almost the same effect of suppressing the destabilization of the class can be obtained. However, providing a roller having a pressing force lower than the pressing force of the other conveying paths lowers the resistance of the sheet during conveyance to the disturbance. In addition, a similar effect can be obtained by raising or lowering the pressure of the last conveyance roller of the rotary conveyance path and the last roller of the straight conveyance path from the surroundings, but the first conveyance rollers 7 and 11 of the rotation conveyance path and the straight conveyance The effect on the stability was slightly inferior to the case where the pressing force of the first rollers 8 and 12 in the path was set higher than that of the other conveying rollers. By the structure and the setting of the clamping force described above, the front / back reversing conveyance mechanism of the present embodiment was able to realize a very stable front / back reversing operation of the sheet.

  In the present embodiment described with reference to FIGS. 1 and 6, the single wafer 1 is rotationally conveyed by 90 degrees around an axis (43 axis in FIG. 6) perpendicular to the conveying surface, and an axis (in the conveying surface) orthogonal to the conveying direction ( A method was shown in which the carrier was rotated 180 degrees around the axis (45 axis in FIG. 6) and, finally, the direction of transfer was changed 90 degrees around the axis (47 axis in FIG. 6) perpendicular to the transport surface. That is, in the above-described embodiment, as a front-back reversing method for single-wafers, a 90-degree rotation conveyance path constituted by the first first axis rotation conveyance path and a 180 degrees rotation constituted by the second axis rotation conveyance path. This can be realized by the single-wafer front-back reversing mechanism in which the rotary transport path and the 90-degree rotary transport path constituted by the second first-axis rotary transport path are continuously arranged. In addition to this, as shown in FIG. 7, the single-wafer 1 is rotated 180 degrees around an axis perpendicular to the transfer surface and then rotated 180 degrees around an axis orthogonal to the transfer direction in the transfer surface. There is also. In this method, a deviation occurs between the entrance-side transfer line 50 and the discharge-side transfer line 51, but it can be applied to, for example, an apparatus in which the transfer space is large and such a deviation is allowed.

  In addition, first, after rotating 90 degrees around the axis perpendicular to the transport direction in the feed surface, then rotating 180 degrees around the axis perpendicular to the transport surface, and finally again in the transport direction in the transport surface. Various transport path configurations are conceivable, such as a method of rotating 90 degrees around an orthogonal axis. According to the concept of the present embodiment, it is conveyed by performing 180-degree rotation conveyance about an axis perpendicular to the conveyance surface and 180-degree rotation conveyance about an axis orthogonal to the conveyance direction in the conveyance surface. It is possible to reverse the front and back of a single sheet without switching it back. Between the transport paths that perform this rotation processing, how to divide and combine 180-degree rotary transport around an axis perpendicular to the transport surface and 180-degree rotary transport around an axis perpendicular to the transport direction in the transport surface However, it can be turned upside down. However, it can be said that the combined structure of the rotary conveyance paths of the embodiment described with reference to FIGS. 1 and 6 is the most suitable configuration for forming a thin and compact front and back determination conveyance mechanism.

  As described above, by adopting a rotary transport unit structure around an axis perpendicular to the transport surface used in the front / back reversing mechanism of this embodiment, the transported single wafers cause almost any posture fluctuation such as skew or shift. Without, it is possible to rotate and convey single-wafers. The rotary transport unit that rotates around an axis perpendicular to the transport surface is a highly useful transport unit even as a single transport unit that changes the transport direction of single-wafers. If stable transport can be realized by a rotary transport unit around an axis that is perpendicular to the transport surface, the degree of freedom in the shape of the device will be increased, not only when the front and back are inverted. That is, it is easy to connect a plurality of single-wafer processing devices at any angle, and it goes without saying that the device configuration margin is much higher than in the case of connecting only straight lines.

  As described above, in the present embodiment, it is possible to provide the rotary transport mechanism about the axis perpendicular to the transport surface without causing the transported sheets to undergo posture changes such as skew and shift. By applying the rotary transport mechanism around the axis perpendicular to the transport surface, the degree of freedom in the device configuration of the single-wafer processing apparatus can be increased.

  For example, the conveyed single-wafers are rotated 180 degrees about a first axis perpendicular to the conveying plane and 180 degrees about a second axis perpendicular to the conveying direction within the single-sheet conveying plane. The orthogonal first axis and second axis are axes that are orthogonal to the rotation axis (third axis) in the transport direction of the sheet that rotates the sheet in the twist transport, and these two first axes The 180 ° rotation operation on the second axis makes it possible to obtain a rotation operation equivalent to that of the third axis in the twist conveyance. By using this method, it becomes possible to reverse the front and back of the sheet without rotating the third shaft, which has a problem in the stability of conveyance and the belt life. Further, since this method does not need to stop or decelerate the sheets being conveyed, it can be applied to the sheets continuously conveyed at a short conveying interval. As described above, according to the present embodiment, it is possible to provide a stable, highly reliable and long-life front / back reversing mechanism applicable to single-wafers that are continuously conveyed at a short conveying interval, and also with high stability using the same. High-speed processing becomes possible.

  Furthermore, by combining a rotary transport mechanism around an axis perpendicular to the transport surface and a rotary transport path around an axis orthogonal to the transport direction within the transport surface, stable stability applicable to single-wafers that are continuously transported at short transport intervals It is possible to provide a highly reliable and long-life front / back reversing mechanism. In addition, it is possible to provide a highly stable single-wafer processing apparatus to which this front / back reversing mechanism is applied and which is capable of high-speed processing. Examples of the sheet processing apparatus include a printing apparatus, a banknote processing apparatus, and a ballot paper processing apparatus. Moreover, when applying the single-wafer processing apparatus to a banknote processing apparatus, it can be applied to a cash handling apparatus (for example, an ATM (Automated Teller Machine)) equipped with the banknote processing apparatus, and in the banknote transportation, the above-mentioned front-back reversing method. By adopting, the banknote can be processed with high stability and high speed, as in the case of the present embodiment.

  1 ... Sheets that enter the front and back reversing conveyance path (before front and back reversal), 2 ... Sheets that are discharged from the front and back reversing conveyance path (after front and back reversal), 3 ... Conveying rollers (including rotating shaft portion), 4 ... Conveying rollers (sheet-fed sandwiching portion), 5 ... Single-sheet conveying path, 6 ... 1st axis rotating conveying path, 7 ... First rotating conveying roller on the entry side to the 1st axis rotating conveying path, 8 ... Rotation The first linear transport roller on the return side from the transport path to the straight transport path, 9 ... Rotating the sheet 180 degrees around the axis orthogonal to the transport direction in the transport surface, transport mechanism section, 10 ... Axis perpendicular to the transport surface 2nd axis conveying mechanism part that changes the conveying direction by 90 degrees around, 11 ... first rotary conveying roller on the entry side to the 2nd axis rotary conveying path, 12 ... from the rotary conveying path to the straight conveying path (on the discharge side) The first linear conveyor roller on the return side, 13 ... The conveyor roller with an inclined conveyor path that changes the conveyor direction around an axis perpendicular to the conveyor surface, 1 4 ... Conical gear of inclined conveying roller, 15 ... Pressing roller provided facing the inclined conveying roller, 16 ... Pressing means such as a spring attached to the pressing roller, 17 ... Conveying surface of sheet to be rotationally conveyed , 18 ... lower guide plate of transport surface (rotary transport mechanism part around an axis perpendicular to the transport surface), 19 ... transport roller holding portion, 20 ... two transport rollers having inclined surfaces, 21 ... lower side of transport surface Guide plate, 22 ... Single sheet conveying path, 23 ... Pressing roller arranged around large diameter roller, 24 ... Large diameter roller, 25 ... Conical drive gear of inclined conveying roller, 26 ... Rotating shaft of conveying roller, 27… Inclined conical intermediate gear, 28… Rotation axis of inclined conical intermediate gear, 29… Inlet side of sheet, 30… Outlet side of sheet, 31… First roller of straight conveying path, 32 … The first roller in the rotary transport, 33… The center of rotation of the rotary transport orbit of the single-wafers, 34 ... The holding part of the transport shaft of the inclined transport roller, 35 ... The conical surface having the center of rotation 33 of the rotary transport orbit of the single-wafers as its apex

Claims (7)

A single-wafer turning transport mechanism for transporting single-wafers,
A swivel transport path is provided for transporting the single wafers to be rotated so as to rotate about an axis perpendicular to a transport surface for transporting the single wafers, and the swivel transport path is configured to rotate the transport roller and the transport roller. A pressure roll that is pressed by a roller with a predetermined pressing force, and has a roller conveying unit that sandwiches and conveys the sheet to be conveyed,
At least one of the rotation axis of the transport roller or the pressing roll passes through the center of rotation of the rotation path in the transport surface of the sheet, and is arranged to be inclined with respect to the transport surface of the sheet, A sheet-fed swiveling / conveying mechanism, wherein a nipping surface of the conveying roller or the pressing roller arranged at an angle is parallel to a conveying surface of the sheet. The single-wafer turning / conveying mechanism according to claim 1,
The conveying roller and the pressing roller, which is arranged at the connection portion of the sheet-by-sheet turning transport mechanism and the linear transport mechanism for linearly transporting the sheet, in either the sheet-by-sheet turning transport mechanism or the linear transport mechanism. A single-wafer swiveling / conveying mechanism, wherein a predetermined contact pressing force of the roll is set to be higher or lower than a predetermined contact pressing force of the conveying roller around the connection portion and the pressing roll. The single-wafer turning / conveying mechanism according to claim 1,
The single-wafer rotating / conveying mechanism is arranged such that its rotation axis is inclined with respect to the single-wafer conveying surface, and has a plane holding surface parallel to the conveying surface. A single-wafer rotating / conveying mechanism configured to sandwich and convey the single-wafer with the pressing roller having   A swivel transport path for transporting the single-wafers so as to rotate on an axis perpendicular to the transport direction within the transport plane of the single-wafers together with the first-axis rotating transport path comprising the single-wafer swivel transport mechanism according to claim 1. At least one second shaft rotary transport path is provided, and the total transport rotation angle of the single-wafers by the one or more first shaft rotary transport paths and the one or more second shaft rotary transport paths is The front and back of the single-wafer reversing mechanism is characterized by reversing the front and back of the single-wafer by setting each to 180 degrees. The single-wafer turning / conveying mechanism according to claim 4,
A 90-degree rotation conveyance path formed by the first axis rotation conveyance path, a 180-degree rotation conveyance path formed by the second axis rotation conveyance path, and a 90-degree rotation conveyance path formed by the first axis rotation conveyance path , Is arranged in succession, the front and back reversing mechanism for single-wafers.   A single-wafer processing apparatus comprising the single-wafer turning and conveying mechanism according to claim 1.   A cash handling apparatus comprising the single-wafer processing apparatus according to claim 6.

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