JP2012166876A - Paper sheet separating-carrying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small and simple paper sheet separating-carrying device that has great processing capability and that can perform stable separation and carrying.SOLUTION: A pay-out part 32 pays out forms 12 in order from a form group in which the plurality of forms are piled up, and a first separation part 51 separates the forms 12 that are paid out by the pay-out part 32. The first separation part 51 includes a first carrier mechanism 54 for feeding the form 12 in a carrying direction, and a first reversing mechanism 55 for returning another form 12, which is fed along with the form 12 fed in the carrying direction by the first carrier mechanism 54, in a direction opposite to the carrying direction. The first reversing mechanism 55 includes a belt 59 that has a belt surface 59a disposed along the carrying direction to a carrying-direction upstream side from a position to face the first carrier mechanism 54. When the plurality of forms 12 are paid out from the pay-out part 32 at a time, the forms 12 are loosened by contact with the belt surface 59a of the belt 59 and separated from one another.

Description

  The present invention relates to a paper sheet separating and conveying apparatus that separates and conveys paper sheets one by one.

  2. Description of the Related Art Conventionally, there is a paper sheet separating and conveying apparatus that separates and conveys a plurality of sheets such as a stacked form.

  In this paper sheet separating and conveying apparatus, a paper feeding unit that sequentially feeds paper sheets from a group of a plurality of paper sheets, and two or more paper sheets fed from the feeding unit are sent in a state of being overlapped. In order to prevent this, a separation unit that separates and conveys paper sheets one by one is provided. The separation unit includes a conveyance roller that is rotationally driven in the conveyance direction of the paper sheet, and a reverse rotation roller that is reversely driven via a torque limiter in the opposite conveyance direction, and is attached in a direction in which the reverse rotation roller contacts the conveyance roller. It is energized.

  When no paper sheet is fed between the transport roller and the reverse roller, both rollers come into contact with each other, the frictional force between both rollers is larger than the transmission force of the torque limiter, and the reverse roller is driven by the transport roller. And rotate in the transport direction.

  When a single sheet is fed from the feeding section between the conveying roller and the reverse roller, the frictional force between each roller and the sheet is greater than the transmission force of the torque limiter, and the reverse roller is the conveying roller. It rotates in the transport direction following the paper sheet fed in the transport direction.

  When two or more sheets are fed from the feeding section between the transport roller and the reverse rotation roller, the torque limiter transmission force is smaller than the frictional force between each roller and each sheet, Because the frictional force between the paper sheets is larger than that, the reverse roller reverses, and the other paper sheets that overlap the single paper sheet fed in the transport direction by the transport roller return to the anti-transport direction. Then, the sheets pass one by one between the conveyance roller and the reverse rotation roller.

  Further, when the paper sheet is a form, there is a spelled form in which a plurality of sheets are spelled in addition to a single form form. In the case of such a plurality of bound sheets, a sheet separating / conveying device dedicated to the bound sheets is used. In this paper sheet separating and conveying apparatus, one spelled paper sheet is sucked and taken out by a suction device from a group of paper sheets in which a plurality of spelled paper sheets are accumulated, and the single spelled paper sheet taken out is conveyed. (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 5-116782

  However, in the paper sheet separating / conveying apparatus having a separating unit composed of the conveying roller and the reverse roller, the separation is started only when the paper sheet fed by the feeding unit reaches between the conveying roller and the reverse roller. Because of this action, multiple sheets of paper may be sent between the transport roller and reverse roller at the same time. In that case, multiple sheets may not be reliably separated and stable. Separation operation is not possible. In particular, in the case of a bound paper sheet, when a plurality of bound paper sheets are fed between the transport roller and the reverse roller at a time, the plurality of bound paper sheets are simultaneously bitten between the transport roller and the reverse roller. May get stuck.

  Further, the paper sheet separating and conveying apparatus dedicated to the bound paper sheets has a problem that the processing capacity for separating and conveying the paper sheets is low due to the increase in size and complexity.

  The present invention has been made in view of these points, and an object of the present invention is to provide a paper sheet separating and conveying apparatus that is small and simple, has high processing capability, and can perform stable separation and conveyance.

  The paper sheet separating and conveying device according to claim 1 is a first feeding unit that sequentially feeds paper sheets from a group of stacked paper sheets, and a first paper sheet that is fed by the feeding unit in a conveying direction. A transport mechanism, and a first reversing mechanism that returns the other paper sheets sent along with the paper sheets fed in the transport direction by the first transport mechanism to the reverse transport direction; A first separation unit having a belt in which a belt surface is disposed along a conveying direction from a position facing the first conveying mechanism to an upstream side in the conveying direction, and the belt is reversed with respect to the conveying direction; It is equipped with.

  The paper sheet separating and conveying apparatus according to claim 2 is the paper sheet separating and conveying apparatus according to claim 1, wherein the belt surface of the belt is in a feeding area where the paper sheets are fed from the paper sheet group by the feeding unit. On the other hand, it is penetrated obliquely from the upstream side to the downstream side in the transport direction.

  The paper sheet separating and conveying apparatus according to claim 3 is the paper sheet separating and conveying apparatus according to claim 1 or 2, wherein the second conveying mechanism that sends the paper sheet that has passed through the first separating unit in the conveying direction. And a second reversing mechanism that opposes the second transport mechanism, and the second reversing mechanism is configured such that when the paper sheet to be processed is a single sheet of paper, the second reversing mechanism is the second reversing mechanism. This is a spelled paper sheet that is rotated so that other single paper sheets sent along with the single paper sheets that are sent in the transport direction by the transport mechanism are returned in the opposite transport direction, and a plurality of paper sheets to be processed are bound. In the case of the kind, it is provided with the second separation mechanism that rotates together with the second conveyance mechanism so as to send the bound paper sheets in the conveyance direction.

  The paper sheet separating and conveying apparatus according to claim 4 is an operation for designating a mode in which the paper sheet to be processed is a single paper sheet or a spelled paper sheet in the paper sheet separating and conveying apparatus according to claim 3. And a control unit for controlling the rotation direction of the second reverse rotation mechanism in accordance with the mode designated by the operation unit.

  According to the paper sheet separating and conveying apparatus according to claim 1, the first reversing mechanism is opposed to the first conveying mechanism among the first conveying mechanism and the first reversing mechanism of the first separating unit. A belt having a belt surface disposed in the transport direction from the position to the upstream in the transport direction, and the belt reverses with respect to the transport direction, so that a plurality of sheets from the sheet group by the feeding unit Even when the paper is fed out at a time, the paper sheets are separated by a certain amount by being contacted with the belt surface until reaching the position where the first conveying mechanism and the belt are opposed to each other. Leaves are not sent between the first conveying mechanism and the belt at a time, and the separation operation can be ensured. Therefore, the small and simple, high processing capacity and stable separation and conveyance can be achieved.

  According to the paper sheet separating and conveying apparatus according to claim 2, in addition to the effect of the paper sheet separating and conveying apparatus according to claim 1, the belt surface of the belt is fed out of the sheet group by the feeding portion. Since the feeding area is obliquely intruded from the upstream side to the downstream side in the transport direction, a plurality of paper sheets can be reliably spread by the belt surface.

  According to the paper sheet separating and conveying apparatus according to claim 3, in addition to the effect of the paper sheet separating and conveying apparatus according to claim 1 or 2, the second conveying mechanism and the second reverse rotation of the second separating unit. Among the mechanisms, the second reversing mechanism is sent along with the single paper sheet to be processed in the transport direction by the second transport mechanism when the paper sheet to be processed is a single paper sheet one by one. Since the other single paper sheets are rotated so as to return in the anti-conveyance direction, the single paper sheets can be reliably separated one by one, and the binding paper sheets in which a plurality of paper sheets to be processed are bound. In the case of the paper, since it rotates so as to send the bound paper sheets in the transport direction together with the second transport mechanism, it can be transported without peeling off and separating the bound paper sheets. It can handle both leaves and spelled leaves.

  According to the paper sheet separating and conveying apparatus according to claim 4, in addition to the effect of the paper sheet separating and conveying apparatus according to claim 3, the rotation of the second reverse rotation mechanism is performed according to the mode specified by the operation unit. Since the direction is controlled, the mode can be easily switched only by software control without mechanical change.

It is a side view at the time of processing the single paper sheet of the paper sheet separation conveyance apparatus which shows one embodiment of this invention. It is a front view of the 1st separation part of a paper sheet separation conveyance device same as the above. It is a front view of the 2nd separation part of a paper sheet separation conveyance device same as the above. It is a front view of the width alignment mechanism of a paper sheet separation conveyance device same as the above. It is a side view which shows adjustment operation | movement by the pressure adjustment mechanism of a paper sheet separation conveyance apparatus same as the above in order of (a) (b) (c). It is a side view which shows isolation | separation operation | movement of a 1st isolation | separation part same as the above. It is a side view which shows isolation | separation operation | movement of a 2nd isolation | separation part same as the above in order of (a) (b). It is a side view which shows the isolation | separation operation | movement at the time of the normal of the 2nd isolation | separation part same as the above. It is a side view showing separation operation at the time of abnormality of the 2nd separation part same as the above. It is a perspective view of the bound paper sheets processed by the same paper sheet separating and conveying apparatus. It is a side view in the case of processing the bound paper sheets of the same paper sheet separating and conveying apparatus. It is a block diagram of a paper sheet separation conveyance device same as the above. 5 is a table showing the history of the degree of follow-up by the pressure adjusting mechanism of the paper sheet separating and conveying apparatus as shown in (a) and (b). It is a block diagram of the paper sheet processing machine using the paper sheet separation conveyance apparatus same as the above.

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

  First, FIG. 14 shows a form sorting machine 11 as a paper sheet processing machine using a paper sheet separating and conveying apparatus for separating and conveying paper sheets.

  The paper sheets to be processed by this form sorter 11 are, for example, forms 12 such as a payment notice for public utility charges and a payment notice for national tax and social insurance premiums. This form 12 includes a single form 12a as a single sheet and a spelled form 12b as a spelled sheet in which one end of a plurality of forms is spelled as shown in FIG. There are also various sizes depending on the type.

  The form sorting machine 11 includes a machine body 14, a paper sheet separating / conveying apparatus 15 that separates and conveys a plurality of forms 12 stacked and loaded into the machine body 14 one by one (one by one), and this paper sheet separating / conveying apparatus. 15, the conveyance path 16 in the machine body 14 for conveying the form 12 separated and conveyed in the machine body 14, the reading unit 17 for reading the data of the form 12 conveyed by the conveyance path 16, and the reading result by the reading unit 17 Receiving the form 12 from the transport path 16 and temporarily holding it or sending the temporarily held form 12 to the transport path 16, a plurality of temporary holding sections 18, a plurality of sorting sections 19 for sorting the forms 12 transported by the transport path 16 by type, And a control device 20 for controlling the form sorter 11.

  The temporary storage unit 18 includes a pair of tapes 22, a winding roller 23 that winds together one end side of the pair of tapes 22, and a pair of winding reels 24 that winds the other end side of each tape 22. I have. When the form 12 is stored, the pair of tapes 22 is taken up by the take-up roller 23 and each tape 22 is rewound from each take-up reel 24, and the form 12 fed one by one from the conveyance path 16 is placed between the pair of tapes 22. Is wound around the take-up roller 23 together with a pair of tapes 22 and stored, and when the form 12 is fed, each take-up reel 24 takes up each tape 22 and winds the pair of tapes 22 from the take-up roller 23. Then, the forms 12 are sent out one by one from the pair of tapes 22 to the conveyance path 16.

  In the form sorting machine 11, a plurality of stacked forms 12 are fed one by one to the transport path 16 by the paper sheet separating and transporting device 15, and the data of the form 12 transported by the transport path 16 is read by the reading unit. In step 17, the type of the form 12 is determined. Depending on the settings, the forms 12 whose types have been identified are transported to the sorting unit 19, all the forms 12 are temporarily held in the temporary holding unit 18, or only some of the forms 12 such as defective reading are temporarily held. Hold temporarily at 18. When the form 12 is temporarily held in the temporary holding unit 18, the form 12 is fed out from the temporary holding unit 18 one by one and conveyed to the sorting unit 19. The sorting unit 19 sorts the forms 12 conveyed by the conveyance path 16 according to type.

  Next, the configuration of the paper sheet separating and conveying device 15 will be described.

  The paper sheet separating and conveying device 15 includes a loading unit 31 in which a plurality of stacked sheets 12 are loaded, and a sheet 12 from a group of sheets as a plurality of stacked sheet sheets in the loading unit 31 in the machine body 14. A feeding unit 32 that feeds out one sheet at a time in the conveying direction toward the path 16 (one binding), a separating unit 33 that separates the forms 12 fed out by the feeding unit 32 one by one (one by one), and this A conveyance unit 34 is provided that conveys the forms 12 that have passed through the separation unit 33 and separated one by one (one by one) toward the conveyance direction. In the separation unit 33 and the conveyance unit 34, a separation conveyance path 35 for conveying the form 12 to the conveyance path 16 is formed.

  The loading unit 31 includes a regulation wall 37 facing the conveyance direction, a reference wall 38 (see FIG. 4) arranged orthogonal to one side of the regulation wall 37, and between the regulation wall 37 and the inside of the reference wall 38. And a stage motor (not shown) for moving the stage 39 up and down. When loading a plurality of stacked forms 12 into the loading section 31, press the two orthogonal sides of the form 12 against the regulation wall 37 and the reference wall 38, and place the form 12 on the stage 39 horizontally. To do. The stage 39 is set to the loading position of the form 12 at the lowest position, and ascends when processing starts and presses the form 12 against the feeding unit 32 with a predetermined pressing force.

  Above the loading unit 31, a width adjusting mechanism 40 for adjusting the form 12 to the reference wall 38 on one side is installed. As shown in FIGS. 1 and 4, the width adjusting mechanism 40 includes an impeller 42 in which a plurality of blades 41 having appropriate frictional force and flexibility are radially projected. Are driven to rotate by an impeller motor (not shown). The blade 41 of the rotating impeller 42 contacts the uppermost form 12 before the uppermost form 12 comes into contact with the feeding portion 32 by the rise of the stage 39, and the form 12 is moved by the frictional force between the blade 41 and the form 12. The width is brought close to the reference wall 38 on one side. When the topmost form 12 of the form group is drawn out from the bottom of the impeller 42 by the feeding unit 32, the blade 41 of the impeller 42 contacts the upper surface of the second form 12 from the top of the form group. The form 12 is brought close to the reference wall 38. As described above, the width aligning mechanism 40 can sequentially align the form 12 with the reference wall 38 before the form 12 comes into contact with the supply unit 32, and can arrange the one side of the form 12 to be output by the supply unit 32.

  Further, as shown in FIG. 1, the feeding unit 32 has a feeding roller 45 as a feeding rotating body disposed above the loading unit 31 at a position close to the conveying direction, and this feeding roller 45 is used as a feeding motor 46. (Refer to FIG. 12) and rotationally drive in the transport direction (feeding direction). The feeding roller 45 is fixed to a shaft 47 that is rotationally driven by a feeding motor 46, and the width of the smallest size of the forms 12 to be processed with respect to the reference wall 38 on one side of the loading unit 31. Located within the dimension area. Therefore, even if there is a form 12 of the minimum size at the top of the form group to be pressed against the feed roller 45 and there is a form 12 of a size larger than the minimum size second from the top, the feed roller 45 only has the form 12 of the minimum size. It is possible to prevent the second form 12 from being fed out without contacting the second form 12.

  With the upper end of the regulation wall 37, the forms 12 fed out from the loading unit 31 by the feeding roller 45 are regulated one by one (one by one). Between the upper end of the regulation wall 37 and the feeding roller 45, a feeding port 48 for feeding the forms 12 one by one (one by one) to the separating portion 33 is formed.

  Further, the separation unit 33 includes a first separation unit 51 and a second separation unit 52 that are arranged in order from the upstream side in the transport direction.

  As shown in FIGS. 1 and 2, the first separation unit 51 includes a first transport mechanism 54 that feeds the form 12 fed by the feed roller 45 in the transport direction, and a transport direction by the first transport mechanism 54. A first reversing mechanism 55 is provided for returning the other form 12 sent along with the form 12 to be sent in the reverse direction.

  The first transport mechanism 54 is arranged on the upper side of the separation transport path 35, and includes a first transport roller 56 as a first transport rotating body, and a first transport shaft to which the first transport roller 56 is fixed. 57 and a first transport motor 58 (see FIG. 12) that rotationally drives the first transport shaft 57 in the transport direction. As shown in FIG. 2, there are a plurality of first transport rollers 56, which are arranged at predetermined intervals in the axial direction of the first transport shaft 57.

  The first reverse rotation mechanism 55 is disposed below the separation conveyance path 35 and is disposed along the conveyance direction from the position facing the lower side of the first conveyance mechanism 54 to the upstream side in the conveyance direction. 59. The belt 59 is disposed at a position facing the lower side of the first transport mechanism 54 and a downstream pulley 60 on the downstream side in the transport direction, and is disposed upstream of the position facing the first transport mechanism 54 in the transport direction. It is wound around the upstream pulley 61 on the upstream side in the transport direction.

  The upstream pulley 61 is smaller in diameter than the downstream pulley 60 and is disposed outside and below the feeding area of the form 12 fed by the feeding roller 45 (area facing the feeding port 48). Thereby, the belt surface 59a on the upper surface side of the belt 59 enters obliquely from the upstream side in the transport direction to the downstream side with respect to the feeding region (region facing the feeding port 48) of the form 12 fed by the feeding roller 45. Are arranged as follows. Therefore, the belt surface 59a on the upper surface side of the belt 59 is opposed to the feeding area (feeding port 48) of the form 12 fed by the feeding roller 45.

  The pulleys 60 and 61 are attached to the first reverse shafts 62 and 63, respectively. As shown in FIG. 2, there are a plurality of belts 59 and pulleys 60, 61, at a position spaced apart in the axial direction of the first reverse rotation shafts 62, 63 and with each of the first transport rollers 56. Are arranged at positions shifted alternately along the axial direction.

  One of the first reverse rotation shafts 62 and 63 is rotationally driven in the anti-conveyance direction by the first reverse rotation motor 64 (see FIG. 12), and thereby the belt surface 59a of the belt 59 is rotationally driven in the anti-conveyance direction.

  In the first separation unit 51, the distance between the lower surface of the first conveying roller 56 and the belt surface 59a of the belt 59 viewed from the axial direction is smaller than the thickness of one sheet of the form 12, for example, the distance is zero. However, they may be slightly overlapped with each other.

  Note that the position of the belt 59 facing the first transport mechanism 54 means that the belt 59 does not directly face the first transport roller 56, but the first transport mechanism 54 as a whole is considered. It can be said that they are opposed to each other, and are positions facing each other when viewed from the axial direction, or are positions overlapping with the belt 59 when viewed from the axial direction.

  In addition, the plurality of first transport rollers 56 and the plurality of belts 59 are, as in the case of the feeding roller 45, the smallest size of the forms 12 to be processed with reference to the reference wall 38 on one side of the loading unit 31. Arranged in an area of 12 width dimensions. Therefore, when a plurality of forms 12 are sent to the first separation unit 51 at a time, even if the sizes of the upper form 12 and the lower form 12 are different, the first transport roller 56 is Only the upper form 12 is contacted, and the belt 59 is in contact with only the lower form 12, so that the separating and conveying operation can be normally performed.

  The first conveyance motor 58 and the first reverse rotation motor 64 of the first separation unit 51 are set as one common motor, and the driving force from the common motor is transferred to the first conveyance roller via the transmission mechanism. It may be transmitted to 56 and belt 59, respectively.

  On the other hand, as shown in FIGS. 1 and 3, the second separation unit 52 includes a second transport mechanism 66 as a transport mechanism that sends the form 12 transported by the first transport roller 56 in the transport direction, and A second reversing mechanism 67 is provided as a reversing mechanism facing the second transport mechanism 66. In the case of a single form 12a, the second reversing mechanism 67 anti-conveys other forms 12 sent along with the form 12 sent in the carrying direction by the second carrying mechanism 66, depending on the type of form 12 to be processed. In the case of the spelled form 12b, the form 12 is sent in the carrying direction together with the second carrying mechanism 66.

  The second transport mechanism 66 is disposed on the upper side of the separation transport path 35, and includes a transport rotator, a second transport roller 68 as a second transport rotator, and a second transport roller 68 to which the second transport roller 68 is fixed. There are provided two transport shafts 69 and a second transport motor 70 (see FIG. 12) that rotationally drives the second transport shaft 69 in the transport direction.

  The second reverse rotation mechanism 67 is disposed below the separation conveyance path 35, and the second reverse rotation as the reverse rotation rotor and the second reverse rotation body disposed below the second conveyance roller 68. A roller 71, a second reverse shaft 72 supporting the second reverse roller 71, a torque limiter 73 interposed between the second reverse roller 71 and the second reverse shaft 72, and a second reverse shaft A second reverse motor 74 (see FIG. 12) is provided that enables the 72 to be rotationally driven in both the counter-transport direction and the transport direction.

  In the second separation unit 52, the second reverse roller 71 is pressure-bonded to the second conveying roller 68. The transmission force of the torque limiter 73 is the frictional force between the second transport roller 68 and the second reverse roller 71 when the second transport roller 68 and the second reverse roller 71 are directly pressure-bonded, and the second The friction force between the form 12 and the second transport roller 68 when one sheet 12 enters between the second transport roller 68 and the second reverse roller 71 and the form 12 and the second reverse roller 71 It is set to a value smaller than the friction force between 71 and 71. In this case, the second reverse roller 71 follows the second transport roller 68 and rotates in the transport direction. Further, the transmission force of the torque limiter 73 is larger than the frictional force between the two forms 12 when, for example, the two forms 12 enter between the second conveying roller 68 and the second reverse roller 71. Is set. In this case, the second reverse rotation roller 71 rotates in the opposite conveyance direction.

  Similarly to the feeding roller 45, the second transport roller 68 and the second reverse roller 71 are the smallest size of the forms 12 to be processed with reference to the reference wall 38 on one side of the loading unit 31. Arranged in an area of 12 width dimensions. Therefore, when a plurality of forms 12 are sent to the second separation unit 52 at a time, even if the size of the upper form 12 and the lower form 12 are different, the second transport roller 68 is Only the upper form 12 is brought into contact with the second reverse roller 71, and only the lower form 12 is brought into contact with each other, so that the separating and conveying operation can be normally performed.

  Further, as shown in FIG. 5, the second separation unit 52 detects the operation state of the second reverse rotation mechanism 67, and detects the rotation direction and angle of the second reverse rotation roller 71. And a rotary encoder 75 as a rotation detector.

  Further, as shown in FIG. 5, the second separation unit 52 is configured so that the second transport roller 68 and the second reverse rotation reverse the fluctuation of the friction force of the second transport roller 68 and the second reverse rotation roller 71. A pressure adjusting mechanism 76 that appropriately adjusts the pressure with which the roller 71 is pressed is provided. The pressure adjusting mechanism 76 has an arm 78 whose middle portion is pivotally supported by a shaft 77, and a second reversing roller 71 is supported on one end of the arm 78 by a second reversing shaft 72, One end of a coil spring 79 as urging means is attached to the other end. The other end of the coil spring 79 is attached to a connecting portion 81 that protrudes from the peripheral portion of the disc-shaped cam 80. The cam 80 can be driven to rotate in one or the other in the rotational direction by a stepping motor 82 (see FIG. 12) as an adjustment motor.

  In order to detect the rotational position of the cam 80, an origin position detection sensor 83 and a load upper limit position detection sensor 84 are provided. The origin position detection sensor 83 detects the origin position of the cam 80 at which the pressure for pressing the second reverse rotation roller 71 against the second transport roller 68 is a predetermined pressure, and the load upper limit position detection sensor 84 is Then, the load upper limit position of the cam 80 at which the pressure for pressing the second reverse roller 71 against the second conveying roller 68 is detected is detected.

  In addition, as shown in FIG. 1, paper sheets that detect the leading edge of the form 12 that has passed through the second separation unit 52 between the second separation unit 52 and the conveyance unit 34 on the downstream side in the conveyance direction. A detector 86 is arranged. The paper sheet detection unit 86 uses a photointerlamp in which a projector and a light receiver are opposed to each other through a separation conveyance path 35.

  In addition, the transport unit 34 includes a pair of transport rollers 88 that are respectively disposed above and below the separation transport path 35 and press-bond to each other, and these transport rollers 88 are rotationally driven in the transport direction by a transport motor 89 (see FIG. 12). .

  FIG. 12 is a block diagram of a control system related to the paper sheet separating and conveying device 15 in the control device 20.

  The control unit 91 of the control device 20 includes a feeding unit 32, a first separation unit 51, a second separation unit 52, a conveyance unit 34, a pressure adjustment mechanism 76, a paper sheet detection unit 86, and a storage unit that stores data. 92, an operation unit 93 that inputs and operates various items, and a notification unit 94 that notifies notification items by display or the like are connected. In addition, a stage motor of the loading unit 31, an impeller motor of the width adjusting mechanism 40, and the like are also connected to the control unit 91.

  The storage unit 92 stores a history of detection results of the rotary encoder 75 every time the pressure adjustment mechanism 76 performs pressure adjustment processing.

  In the operation unit 93, the single form mode or the spelling form mode can be designated according to whether the form 12 to be processed is a single form 12a or a spelled form 12b.

  The control unit 91 controls the paper sheet separating and conveying device 15, and further has at least the following functions.

  A function of a conveyance abnormality determination means for determining the presence or absence of a conveyance abnormality from the detection result of the rotary encoder 75. A function of stopping means for stopping the feeding unit 32 and the separating unit 33 when a conveyance abnormality is determined. A function of a determination start control unit that, when the paper sheet detection unit 86 detects the leading edge of the form 12, starts the determination of whether there is a conveyance abnormality by the conveyance abnormality determination unit.

  The rotation direction of the second reverse rotation roller 71 is controlled in accordance with the mode specified by the operation unit 93. In the single form mode, the second reverse rotation roller 71 is rotated in the opposite conveyance direction, A function of rotation direction control means for rotating the second reverse rotation roller 71 in the transport direction in the case of the spelling form mode.

  A function of a follow-up degree determination unit that determines the follow-up degree of the rotation of the second reverse rotation roller 71 with respect to the rotation of the second transport roller 68 from the detection result of the rotary encoder 75 A function of pressure adjustment control means for controlling the pressure adjustment mechanism 76 so as to obtain a predetermined follow-up degree based on the determination of the follow-up degree of the rotation of the second reverse rotation roller 71 with respect to the rotation of the second transport roller 68. A function of notification control means for determining the notification content based on the tracking degree history stored in the storage unit 92 and causing the notification unit 94 to notify the notification content. A function of the tracking degree determination start control unit that causes the tracking degree determination unit to determine the tracking degree every time before the feeding unit 32 starts the feeding operation for each form group.

  Next, the operation of the paper sheet separating and conveying device 15 will be described.

  The operation unit 93 specifies a mode corresponding to the type of the form 12 to be sorted, and loads the stacked form 12 into the loading unit 31. When the form 12 is loaded, two sides of the form 12 that are orthogonal to each other are pressed against the regulation wall 37 and the reference wall 38, respectively, and the form 12 is placed horizontally on the stage 39 that has been lowered to the loading position in advance.

  When loading of the form 12 is detected by a loading detection sensor (not shown) disposed in the loading unit 31, the sorting process is automatically started, or the sorting process is started by operating the operation unit 93 to start the sorting process. Start. With the start of the sorting process, each mechanism of the form sorting machine 11 including the paper sheet separating and conveying device 15 starts operating.

  By starting the sorting process, the stage 39 rises and presses the uppermost form 12 of the form group on the stage 39 against the feeding roller 45. At this time, the blade 41 of the rotating impeller 42 is always in contact with the uppermost form 12 during the feeding operation before the uppermost form 12 comes into contact with the feeding roller 45 by the rising of the stage 39, and the blade 41 and The form 12 is brought close to the reference wall 38 on one side by the frictional force with the form 12.

  Further, the pressure adjusting mechanism 76 causes the second transport roller 68 and the second reverse roller 71 to be pressure-bonded by the pressure adjusting mechanism 76 after the stage 39 starts to rise by the start of the sorting process. Adjust the pressure. Details of the pressure adjustment operation by the pressure adjustment mechanism 76 will be described later.

  Then, the feeding roller 45 rotates, and the uppermost form 12 of the form group pressed against the feeding roller 45 is fed out from the feeding port 48.

  Here, first, a case where the single form mode is used for processing the single form 12a, and the case where only the topmost form 12 is delivered from the form group by the delivery roller 45 will be described.

  The leading end in the transport direction of the form 12 fed by the feeding roller 45 is sent to the first separation unit 51. In the first separation unit 51, the upper first transport roller 56 always rotates in the transport direction, and the lower belt 59 always moves in the non-transport direction.

  The leading end of the form 12 fed out by the feeding roller 45 comes into contact with the belt surfaces 59a of the plurality of belts 59 rotating in the anti-conveying direction. At this time, since the feeding output by the feeding roller 45 is larger than the frictional force between the form 12 and the plurality of belts 59, the leading end of the form 12 in the conveying direction is formed between the plurality of first conveying rollers 56 and the plurality of belts 59. Sent in between. As shown in FIG. 2, the form 12 is sandwiched between the plurality of first conveying rollers 56 and the plurality of belts 59 that are alternately arranged in the axial direction. Since it is one sheet, the thickness is thin, and the elasticity is weak, it does not come into strong contact with the plurality of first conveying rollers 56 and the plurality of belts 59, and the generated frictional force is small. Therefore, even if a friction force in the counter-conveying direction is applied to the single form 12 due to contact with the plurality of belts 59, friction in the conveying direction due to contact with the plurality of first transport rollers 56 is caused. Since the combined force of the force and the output by the supply roller 45 is larger, the leading end of the form 12 in the conveyance direction passes between the plurality of first conveyance rollers 56 and the plurality of belts 59 to perform the second separation. Part 52 is sent.

  In the second separation unit 52, as shown in FIG. 7A (FIG. 7A shows an example in which two forms 12 are overlapped), the leading edge of the form 12 in the transport direction is detected by the paper sheet detection unit 86. Until this is detected, only the second conveyance roller 68 is rotationally driven in the conveyance direction, and the second reverse rotation roller 71 is not rotationally driven. However, since the second reverse rotation roller 71 is pressure-bonded to the second conveyance roller 68, the second reverse rotation roller 71 follows the second conveyance roller 68 and rotates in the conveyance direction. Therefore, the leading end in the transport direction of the form 12 sent to the second separation unit 52 is transported in the transport direction while being sandwiched between the second transport roller 68 and the second reverse roller 71. Even if there is only one sheet, the tip of the second reverse roller 71 is slightly bent (by detecting the paper sheet from the top surface of the second reverse roller 71). If the form 12 has a dimension corresponding to the distance to the portion 86), it can be conveyed as it is. If the sheet detection unit 86 is not provided, the same operation as when two folded forms 12 are overlapped may occur, and the jamming may occur.

  As shown in FIG. 7B (FIG. 7B shows an example in which two forms 12 overlap each other), the form 12 that has passed between the second transport roller 68 and the second reverse roller 71 is shown. When the paper sheet detector 86 detects the leading edge in the transport direction, the second reverse motor 74 is driven so that the second reverse roller 71 rotates in the counter-transport direction. At this time, the transmission force of the torque limiter 73 is set to a value smaller than the frictional force between the form 12 and the second transport roller 68 and the frictional force between the form 12 and the second reverse roller 71. Therefore, the second reverse roller 71 does not rotate in the counter-conveying direction, but rotates in the conveying direction following the form 12 sent in the conveying direction by the second conveying roller 68.

  Further, when the paper sheet detection unit 86 detects the leading end of the form 12 in the conveyance direction, the control unit 91 determines the second separation unit based on the rotation direction and angle of the second reverse rotation roller 71 detected by the rotary encoder 75. The presence / absence of an abnormality in the conveyance of the form 12 in 52 is determined. Here, as shown in FIG. 8 (a), one form 12 is conveyed, and the second reverse roller 71 follows the one form 12 sent in the conveying direction by the second conveying roller 68. Since the sheet is rotating in the conveyance direction, the control unit 91 determines that the separation and conveyance of the form 12 is normal, and continues the operation of the paper sheet separation and conveyance device 15.

  The leading end in the transport direction of the form 12 that has passed through the second separation unit 52 in a single sheet state is sent between the pair of transport rollers 88 of the transport unit 34, and the pair of transport rollers 88 directs the form 12 toward the transport path 16. Transport.

  Further, when the rear end of the form 12 in the conveyance direction conveyed to the conveyance path 16 by the pair of conveyance rollers 88 passes the position of the paper sheet detection unit 86, and the paper sheet detection unit 86 no longer detects the form 12, The driving of the second reverse rotation motor 74 is stopped and the operation for determining the conveyance abnormality of the form 12 is stopped. Note that the paper sheet detection unit 86 is not particularly required. In that case, the rotation of the second reverse rotation roller 71 may be started at the timing when the form 12 is fed out. Hereinafter, an embodiment in which the paper sheet detection unit 86 is arranged will be described.

  Further, when the rear end in the transport direction of the form 12 transported by the second transport roller 68 of the second separation unit 52 and the pair of transport rollers 88 of the transport unit 34 is removed from under the feeding roller 45, the top of the form group. The second form 12 from the top is pressed against the feeding roller 45, and the form 12 pressed against the feeding roller 45 is subsequently fed out. At this time, the conveyance speed of the form 12 by the second conveyance roller 68 of the second separation section 52 and the pair of conveyance rollers 88 of the conveyance section 34 is set faster than the conveyance speed of the form 12 by the distribution roller 45. The form 12 that is continuously drawn out does not overlap with the form 12 that has been drawn out before, and a predetermined interval is provided between the form 12 that has been drawn out and the form 12 that is continuously drawn out.

  Next, in the case of the single form mode for processing the single form 12a, the plurality of forms 12 are fed out at the same time with the top form 12 fed out from the form group by the feeding roller 45. The case will be described.

  The leading ends in the transport direction of the plurality of forms 12 fed out at a time while being overlapped by the feeding roller 45 are fed into the first separation unit 51. In the first separation unit 51, the upper first transport roller 56 always rotates in the transport direction, and the lower belt 59 always moves in the non-transport direction.

  As shown in FIG. 6, the leading ends in the transport direction of the plurality of forms 12 fed out at a time in a state of being overlapped by the feed roller 45 come into contact with the belt surfaces 59a of the plurality of belts 59 rotating in the opposite transport direction. . At this time, the frictional force between the feeding roller 45 and the uppermost form 12 pressed against the feeding roller 45, which is the feeding output of the feeding roller 45, is generated between the uppermost form 12 and the plurality of belts 59. Since the frictional force between the uppermost forms 12 is larger, the leading end of the uppermost form 12 is fed between the plurality of first conveying rollers 56 and the plurality of belts 59. In addition, the frictional force between the overlapping uppermost form 12 and the lowermost form 12 is smaller than the frictional force between the feeding roller 45 and the uppermost form 12, and more than the uppermost form. It is smaller than the frictional force between the lower form 12 and the plurality of belts 59. For this reason, the overlapping forms 12 below the uppermost layer are returned to the counter-conveying direction by the frictional force with the plurality of belts 59, the movement in the conveying direction is restrained, or the movement in the conveying direction is delayed. It is Accordingly, a plurality of forms are formed by the belt surfaces 59a of the plurality of belts 59 until the plurality of overlapping forms 12 reach the position where the plurality of first transport rollers 56 and the plurality of belts 59 face each other. The sheet 12 can be separated along the conveying direction to some extent, and the form 12 can be easily fed between the plurality of first conveying rollers 56 and the plurality of belts 59 one by one.

  Nevertheless, when a plurality of forms 12 are fed at once with a plurality of first conveying rollers 56 and a plurality of belts 59, they are alternately arranged in the axial direction as shown in FIG. The plurality of forms 12 are sandwiched between the plurality of first conveying rollers 56 and the plurality of belts 59, but the plurality of forms 12 are thick and elastic. Therefore, the uppermost form 12 that overlaps strongly contacts the plurality of first conveying rollers 56 and the frictional force with the first conveying roller 56 increases, and the lower form 12 below the uppermost form 12 The friction with the plurality of belts 59 increases due to strong contact with the plurality of belts 59. Therefore, the top form 12 is sent in the transport direction and sent to the second separation unit 52, but the form 12 below the top is moved in the anti-transport direction by the frictional force with the plurality of belts 59. It is returned, the movement in the conveyance direction is stopped, or the movement in the conveyance direction is delayed. Therefore, even when a plurality of forms 12 are sent at once with a plurality of first conveying rollers 56 and a plurality of belts 59 being overlapped, it is possible to easily separate the forms 12 one by one.

  In addition, when a plurality of forms 12 are sent to the first separation unit 51 in a state where they overlap each other, when the highest-order form 12 is sent from the first separation unit 51 in the transport direction, the same is done. Then, the feeding operation of the second form 12 from the top is started, and a plurality of forms 12 are sequentially sent in the transport direction.

  In the second separation unit 52, as shown in FIG. 7A (FIG. 7A shows an example in which two forms 12 are overlapped), the leading edge of the form 12 in the transport direction is detected by the paper sheet detection unit 86. Until this is detected, only the second conveyance roller 68 is rotationally driven in the conveyance direction, and the second reverse rotation roller 71 is not rotationally driven. However, since the second reverse rotation roller 71 is pressure-bonded to the second conveyance roller 68, the second reverse rotation roller 71 follows the second conveyance roller 68 and rotates in the conveyance direction. Therefore, the form 12 sent between the second transport roller 68 and the second reverse roller 71 is transported in the state of being sandwiched between the second transport roller 68 and the second reverse roller 71. It is conveyed to.

  As shown in FIG. 7B (FIG. 7B shows an example in which two forms 12 overlap each other), the form 12 that has passed between the second transport roller 68 and the second reverse roller 71 is shown. When the paper sheet detector 86 detects the leading edge in the transport direction, the second reverse motor 74 is driven so that the second reverse roller 71 rotates in the counter-transport direction. At this time, when two forms 12 are sent between the second conveying roller 68 and the second reverse roller 71, the transmission force of the torque limiter 73 of the second reverse roller 71 is two sheets. Since the value is set to a value larger than the friction force between 12, the second reverse rotation roller 71 rotates in the reverse conveyance direction, and the lower form 12 in contact with the second reverse rotation roller 71 is returned in the reverse conveyance direction. Accordingly, only the upper form 12 in contact with the second conveyance roller 68 is sent in the conveyance direction from between the second conveyance roller 68 and the second reverse rotation roller 71. When the lower form 12 in contact with the second reverse roller 71 is returned to the opposite conveyance direction, the second reverse roller 71 comes into contact with the upper form 12 fed by the second conveyance roller 68, and the torque described above. Due to the action of the limiter 73, the rotation of the second reverse roller 71 in the counter-conveying direction is temporarily stopped, and the state shown in FIGS. 8B and 8C is obtained.

  In addition, when a plurality of forms 12 are sent to the second separation unit 52 at a time, when the topmost form 12 is sent from the second separation unit 52 in the transport direction, in the same manner, The feeding operation of the second form 12 from the top is started, and a plurality of forms 12 are sequentially sent in the transport direction.

  Further, when the paper sheet detection unit 86 detects the leading end of the form 12 in the conveyance direction, the control unit 91 determines the second separation unit based on the rotation direction and angle of the second reverse rotation roller 71 detected by the rotary encoder 75. The presence / absence of an abnormality in the conveyance of the form 12 in 52 is determined.

  As shown in FIGS. 8B and 8C, for example, when two overlapping sheets 12 are sent to the second separation unit 52, the upper one sheet 12 is transferred to the second transport roller 68. And the second reverse roller 71 are sent in the transport direction, and the lower form 12 is separated by the second reverse roller 71 so that the feed in the transport direction is restricted. In this case, as shown in FIG. 8 (b), the second reverse rotation roller 71 is in a stationary state in which the lower form 12 is restricted from being fed in the transport direction, or as shown in FIG. 8 (c). As described above, after the lower form 12 enters between the second transport roller 68 and the second reverse roller 71 and the second reverse roller 71 follows and rotates by a small angle in the transport direction, as described above. The second reversing roller 71 is slightly moved in the anti-conveying direction so that the lower form 12 is returned to the anti-conveying direction by inserting the two forms 12 between the second conveying roller 68 and the second reversing roller 71. The second reverse roller 71 repeats the rotation in the transport direction and the rotation in the counter-transport direction within a very small angle range. The control unit 91 performs rotation and anti-conveyance in the conveying direction when the second reverse roller 71 is in a stationary state or when the second reverse roller 71 is in a minute angle range and within a preset normal angle range. If the rotation in the direction is repeated, it is determined that the separation and conveyance of the form 12 is normal, and the operation of the paper sheet separation and conveyance device 15 is continued.

  If any of the phenomena shown in FIGS. 8A, 8B, and 8C described above has occurred, it is determined that the separation and conveyance of the form 12 is normal, and the operation of the paper sheet separation and conveyance device 15 is continued. However, if any other phenomenon occurs, it is determined that the separation and conveyance of the form 12 is abnormal, and the operation of the paper sheet separation and conveyance device 15 is immediately stopped.

  For example, as shown in FIG. 9, when a form 12 whose front end is bent in contact with the second reverse rotation roller 71 is sent between the second conveyance roller 68 and the second reverse rotation roller 71, Since the state is equivalent to the case where two or more forms 12 are overlapped, the second conveying roller 68 tries to send other than the folded tip of the form 12 in the conveying direction, but the second reverse roller 71 The folded tip of the form 12 tries to return to the counter-conveying direction. At this time, if two or more forms 12 are overlapped, if the second reverse rotation roller 71 rotates in the counter-conveying direction by a predetermined angle, the overlap of the two sheets is eliminated and the second reverse rotation roller 71 The rotation in the counter-conveying direction is temporarily stopped. However, in the case of the form 12 with the leading edge folded, the second conveying roller 68 continues to send the sheet 12 other than the folded leading edge in the conveying direction, and the second reverse roller 71 As a result, the folded tip of the form 12 continues to be returned in the counter-conveying direction, so the second reverse roller 71 rotates in the counter-conveying direction beyond the normal angle range, and this is detected by the rotary encoder 75. In this case, the control unit 91 determines that the separation and conveyance of the form 12 is abnormal, and immediately stops the operation of the paper sheet separation and conveyance device 15.

  If the operation of the paper sheet separating / conveying device 15 is not stopped, between the second conveying roller 68 and the second reverse roller 71 in order to send the same form 12 in different directions. There is a case where a conveyance abnormality occurs in which the form 12 is clogged and the form 12 is seriously damaged. Therefore, when the rotation direction and angle of the second reverse rotation roller 71 are directly detected by the rotary encoder 75 and the conveyance abnormality of the form 12 is determined, the operation of the sheet separating and conveying device 15 is immediately stopped to Can reduce damage.

  If the operation of the paper sheet separating / conveying device 15 is stopped due to the abnormal conveyance of the form 12, a part of the body 14 of the form sorting machine 11 is opened, and the form stopped in the paper sheet separating / conveying device 15 12 is removed, the body 14 is replaced, and the process is resumed.

  Further, the leading end in the transport direction of the form 12 that has passed through the second separation section 52 in a single sheet state is sent between the pair of transport rollers 88 of the transport section 34, and the pair of transport rollers 88 transfers the form 12 to the transport path 16. Transport toward.

  In addition, when the paper sheet detection unit 86 passes the position of the paper sheet detection unit 86 at the rear end in the conveyance direction of the form 12 conveyed to the conveyance path 16 by the pair of conveyance rollers 88, the paper sheet detection unit 86 no longer detects the form 12. The driving of the second reverse rotation motor 74 is stopped and the operation for determining the conveyance abnormality of the form 12 is stopped.

  Further, when the rear end in the transport direction of the form 12 transported by the second transport roller 68 of the second separation unit 52 and the pair of transport rollers 88 of the transport unit 34 is removed from under the feeding roller 45, the top of the form group The second form 12 is pressed against the feeding roller 45, and the form 12 pressed against the feeding roller 45 is subsequently fed out. At this time, the conveyance speed of the form 12 by the second conveyance roller 68 of the second separation section 52 and the pair of conveyance rollers 88 of the conveyance section 34 is set faster than the conveyance speed of the form 12 by the distribution roller 45. The form 12 that is continuously drawn out does not overlap with the form 12 that has been drawn out before, and a predetermined interval is provided between the form 12 that has been drawn out and the form 12 that is continuously drawn out. .

  Next, the operation of the paper sheet separating and conveying device 15 in the spelling form mode for processing the spelling form 12b will be described with reference to FIG. Only differences from the operation in the single form mode for processing the single form 12a will be described, and description of common operations will be omitted.

  In the case of the spelling form 12b, the loading unit 31 is loaded with the one end being spelled facing the leading end in the transport direction.

  When one form 12 is fed to the first separation unit 51 by the feeding roller 45, the form 12 is provided between the plurality of first conveying rollers 56 and the plurality of belts 59 alternately arranged in the axial direction. The form 12 is in a wavy shape, but the form 12 is single-bound, thin, thin, and weakly elastic. Therefore, the form 12 is in strong contact with the plurality of first conveying rollers 56 and the plurality of belts 59. The generated frictional force is small. For this reason, even if a frictional force in the counter-conveying direction acts on the single-sheet form 12 due to contact with the plurality of belts 59, friction in the conveying direction occurs due to contact with the plurality of first transport rollers 56. Since the combined force of the force and the output by the supply roller 45 is larger, the leading end of the form 12 in the conveyance direction passes between the plurality of first conveyance rollers 56 and the plurality of belts 59 to perform the second separation. It is fed between the second transport roller 68 and the second reverse roller 71 of the section 52.

  Further, when a plurality of forms 12 are fed to the first separation unit 51 by the feeding roller 45, the plurality of first conveying rollers 56 and the plurality of belts 59 arranged alternately in the axial direction are used. Although the form 12 is sandwiched in a wavy shape, the plurality of bound forms 12 are thick and elastic, so that the topmost form 12 is in strong contact with the plurality of first transport rollers 56. The frictional force with the first conveying roller 56 is increased, and the form 12 below the uppermost layer is in strong contact with the plurality of belts 59, and the frictional force with the plurality of belts 59 is increased. Therefore, the uppermost form 12 moves in the conveyance direction and is fed into the second separation unit 52. However, the form 12 below the uppermost is moved in the opposite conveyance direction by the frictional force with the plurality of belts 59. It is returned, the movement in the conveyance direction is stopped, or the movement in the conveyance direction is delayed. Therefore, even when a plurality of forms 12 are sent at a time between the plurality of first transport rollers 56 and the plurality of belts 59, the forms 12 are separated one by one, and the second separation unit 52 is separated. Can be sent.

  In the second separation unit 52, the second reverse rotation roller 71 is rotated in the conveyance direction or rotated in the conveyance direction following the rotation of the second conveyance roller 68 without being driven to rotate. Therefore, the one-sheet form 12 sent to the second separation unit 52 is sandwiched between the second transport roller 68 and the second reverse rotation roller 71 and sent in the transport direction.

  Note that even if the sheet detection unit 86 detects the sheet, the second conveyance roller 68 is not driven in reverse rotation, and the conveyance abnormality is not determined.

  Further, in the spelling form mode, the processing speed including the feeding speed and the conveyance speed of the spelling form 12b can be reduced as compared with the single form mode, so that the spelling form 12b can be separated and conveyed more reliably.

  In addition, during the feeding operation by the feeding unit 32, when the rotation detection sensor detects that the form 12 is clogged in the feeding unit 32 and the feeding roller 45 does not rotate, or the loading unit 31 has the form 12 loaded. If the paper sheet detection unit 86 does not detect the form 12 for a predetermined time or more even though it is detected by the detection sensor, the control unit 91 causes the delivery part 32 to detect an error such as a paper jam in the form 12. Is determined to have occurred. In this case, the rotation of the feeding roller 45 of the feeding unit 32 is immediately stopped, but in each mechanism of the separating unit 33, the conveying unit 34, and the form sorting machine 11 after the feeding unit 32 of the paper sheet separating and conveying device 15. Processing continues without stopping. As a result, since the processing of the form 12 in the middle of the processing in the form sorting machine 11 can be completed, when the processing of the form 12 in the middle of the processing in the form sorting machine 11 is stopped, the forms in the middle of the processing There is no need to remove all twelve.

  Then, the form 12 jammed in the feeding unit 32 may be removed by opening the machine body 14, or may be automatically restored using the automatic restoration function of the control unit 91. The automatic recovery function of the control unit 91 reverses the feeding roller 45 of the feeding unit 32 to return the jammed form 12 to the loading unit 31, and then rotates the feeding motor 45 in the feeding direction to resume the feeding operation. Let At the time of resuming the feeding operation, the recurrence of clogging of the form 12 can be reduced by making the feeding speed slower than usual until the several sheets (for example, about 5) of the forms 12 are fed out.

  Next, referring to FIG. 5, the pressure adjusting mechanism 76 causes the second transport roller 68 and the second reverse roller to respond to fluctuations in the frictional force of the second transport roller 68 and the second reverse roller 71. A pressure adjustment operation for appropriately adjusting the pressure with which the 71 is bonded will be described.

  The pressure adjustment mechanism 76 performs the pressure adjustment operation by effectively using the time from when the stage 39 starts to rise by the start of the sorting process to when the feeding by the feeding roller 45 is started.

  When the pressure adjustment mechanism 76 starts the pressure adjustment operation, as shown in FIG. 5A, the stepping motor 82 is driven, and the cam 80 is rotated to the origin position detected by the origin position detection sensor 83 and stopped. At this origin position, the second reverse roller 71 is pressed against the second transport roller 68 with a predetermined reference pressure by the biasing force of the coil spring 79.

  The second transport roller 68 is rotationally driven in the transport direction, and the second reverse roller 71 is rotationally driven in the counter-transport direction. At this time, the transmission force of the torque limiter 73 of the second reverse rotation roller 71 is set to a value smaller than the frictional force between the second transport roller 68 and the second reverse rotation roller 71 to be pressure-bonded. The second reverse rotation roller 71 does not rotate in the counter-conveying direction, but rotates in the conveying direction following the rotation of the second conveying roller 68. The rotary encoder 75 detects the rotation of the second reverse roller 71.

  Based on the detection of the rotary encoder 75, the control unit 91 is a ratio of the rotation amount of the second reverse roller 71 to the rotation amount of the second conveyance roller 68, and follows the rotation of the second conveyance roller 68. The follow-up condition (follow-up ratio) of the second reversing roller 71 rotating in this manner is determined, and it is determined whether or not the follow-up condition is within an appropriate value within an appropriate range of the follow-up condition determined in advance by calculation or measurement.

  If the follow-up condition is lower than the appropriate value, the rotation direction and the number of pulses for increasing the pressure are obtained, and the cam 80 is rotated by a predetermined angle by the stepping motor 82 according to the rotation direction and the number of pulses. If it is increased toward the appropriate value and the follow-up condition is higher than the appropriate value, the rotation direction and the number of pulses to decrease the pressure are obtained, and the cam 80 is rotated by a predetermined angle by the stepping motor 82 according to the rotation direction and the number of pulses to follow. Reduce the condition toward an appropriate value.

  For example, if the following condition is lower than the appropriate value, the cam 80 is rotated by a predetermined initial reference angle in the direction of increasing the pressure, and the following condition at the position of the cam 80 is determined, and the following condition is appropriate. If it is higher than the value, the rotational direction and the number of pulses for reducing the pressure are obtained, and the cam 80 is rotated by a half angle of the reference angle by the stepping motor 82 according to the rotational direction and the number of pulses, and the degree of follow-up at the position of the cam 80 is determined. Further, if the following condition is lower than the appropriate value, the rotation direction and the number of pulses for increasing the pressure are obtained, and the cam 80 is further moved to a half of the reference angle by the stepping motor 82 according to the rotation direction and the number of pulses. The angle is rotated by ½ angle, and the following condition at the cam 80 is determined. In this way, by repeating the rotation of the cam 80 and the determination of the tracking degree and gradually decreasing the rotation angle of the cam 80 by half, the tracking condition finally becomes an appropriate value and becomes appropriate. At this position, the stepping motor 82 is stopped to hold the rotational position of the cam 80, and the pressure adjustment operation is completed.

  Note that an adjustment table in which the relationship between the follow-up state at the origin position and the rotation direction and pulse of the stepping motor 82 necessary for the follow-up state to be an appropriate value is calculated and measured in the storage unit 92 in advance. By memorizing, based on the adjustment table, it is calculated how many pulses the stepping motor 82 is driven in which rotation direction from the tracking condition determined at the origin position, and the tracking condition becomes an appropriate value. By driving the stepping motor 82 only, the follow-up condition can be adjusted to an appropriate value by one rotation of the cam 80, and the pressure adjustment operation can be completed in a short time.

  Further, the pressure adjusting operation by the pressure adjusting mechanism 76 was performed at a timing from when the stage 39 started to rise by the start of the sorting process until the feeding by the feeding roller 45 was started. It may be performed when the pressure is adjusted or when the pressure adjustment mode is selected by the operation unit 93.

  In addition, a tracking history is stored in the storage unit 92 every time the pressure adjustment process is performed by the pressure adjustment mechanism 76. The follow-up history includes the number of pulses of the rotary encoder 75 from the origin position of the cam 80 to the adjustment position where the follow-up degree is an appropriate value, and the date and time when the adjustment was performed.

  When the number of pulses exceeds a certain threshold based on the tracking degree history stored in the storage unit 92, the control unit 91 determines the notification content from the fluctuation state of the pulse number, and the notification unit 94 notifies the notification content. Let

  For example, as shown in FIG. 13 (a), if the fluctuation of the tendency of the number of pulses to gradually increase with the passage of time is changed, the second transport roller 68 and the second transport roller 68 due to a secular change such as deterioration of the roller surface material. It is determined that the friction force of the reverse rotation roller 71 is fluctuating, and the notification unit 94 notifies the notification content to that effect.

  As shown in FIG. 13B, unlike the fluctuation of the tendency that the number of pulses gradually increases with the passage of time, when the number of pulses suddenly fluctuates greatly, for example, it is determined that the fluctuation is caused by dirt, and cleaning is immediately performed. The notification content is notified by the notification unit 94.

  Therefore, the administrator or operator of the form sorter 11 confirms the notification content notified by the notification unit 94 and easily grasps the troubles and the contents of the second transport roller 68 and the second reverse rotation roller 71. It is possible to take appropriate measures such as replacement and cleaning.

  According to the paper sheet separating and conveying apparatus 15 of the present embodiment configured as described above, the operation state of the second reversing mechanism 67 is directly monitored in the separating unit 33, and the conveyance abnormality of the form 12 is detected. Since the presence / absence is determined, it is possible to quickly determine that the conveyance abnormality of the form 12 has occurred in the separation unit 33, and it is possible to immediately cope with stopping the driving of the separation unit 33, and the damage to the form 12 can be reduced.

  When the conveyance abnormality of the form 12 is determined, the feeding unit 32 and the separating unit 33 are stopped, so that damage to the form 12 can be reduced.

  By detecting the rotation direction and angle of the second reverse rotation roller 71 of the separation unit 33, it is possible to accurately determine whether or not there is a conveyance abnormality of the form 12.

  When the paper sheet detection unit 86 provided on the downstream side in the transport direction of the separation unit 33 detects the form 12, since the presence or absence of the transport abnormality of the form 12 is determined, erroneous determination can be prevented and accurate determination can be performed.

  In addition, the rotation of the second reverse roller 71 that is pressure-bonded to the second conveyance roller 68 of the separation unit 33 and follows the rotation of the second conveyance roller 68 is monitored, and the second rotation roller 71 rotates with respect to the rotation of the second conveyance roller 68. In order to determine the degree of follow-up of the rotation of the second reverse roller 71, the frictional force of the second transport roller 68 and the second reverse roller 71 due to aging such as the environment of use such as temperature and dirt, and deterioration of the roller surface material If the change can be grasped and, for example, the pressing force between the second conveying roller 68 and the second reverse roller 71 is adjusted or exchanged, a stable separation operation can be performed at all times.

  Based on the determination of the following degree, the pressure adjusting mechanism 76 can adjust the pressure-bonding force between the second conveying roller 68 and the second reverse roller 71 so that the predetermined following degree can be obtained, and a stable separation operation can always be performed. .

  Since the tracking degree history is stored, a change in the tracking degree can be grasped.

  Based on the history of the degree of follow-up, whether the second conveying roller 68 and the second reverse rotation roller 71 are caused by fluctuations in the frictional force due to the usage environment such as temperature or dirt, or the second due to the secular change such as deterioration of the roller surface material. It is possible to grasp the status of the second transport roller 68 and the second reverse roller 71 in order to determine the notification content such as whether the frictional force of the transport roller 68 and the second reverse roller 71 is fluctuating and to notify the notification content. Can take appropriate action.

  If the follow-up degree is determined each time at the timing before the feeding unit 32 starts the feeding operation for each form group loaded in the loading unit 31, a stable separation operation can be performed at all times.

  Of the first transport mechanism 54 and the first reverse rotation mechanism 55 of the first separation unit 51, the first reverse rotation mechanism 55 is located upstream from the position facing the first transport mechanism 54 in the transport direction. The belt 59 has a belt surface 59a disposed along the transport direction, and the belt 59 reverses with respect to the transport direction, so that a plurality of forms 12 are fed out from the form group by the feeding unit 32 at a time. Even in such a case, the forms 12 are separated to some extent by being touched by the contact with the belt surface 59a before reaching the position where the first transport mechanism 54 and the belt 59 face each other. There is no feeding between the first transport mechanism 54 and the belt 59, and the separation operation can be ensured. Therefore, a small, simple, high processing capacity and stable separation and transport can be achieved.

  Since the belt surface 59a of the belt 59 is obliquely intruded from the upstream side to the downstream side in the transport direction with respect to the feeding region in which the form 12 is fed from the form group by the feeding unit 32, a plurality of sheets are formed by the belt surface 59a. The form 12 can be surely sold.

  Of the second transport mechanism 66 and the second reversing mechanism 67 of the second separation unit 52, the second reversing mechanism 67 is the first reversing mechanism 67 when the form 12 to be processed is a single form 12a. Since the other single form 12a sent along with the single form 12a to be sent in the carrying direction by the carrying mechanism 66 of 2 is rotated so as to return to the reverse carrying direction, the single form 12a can be surely separated one by one, In the case of a spelled form 12b in which a plurality of forms 12 to be processed are spelled, the spelled form 12b is rotated so as to be sent in the carrying direction together with the second carrying mechanism 66, so that the spelled form 12b is peeled off and separated. Therefore, both the single form 12a and the spelled form 12b can be handled.

  Since the rotation direction of the second reverse rotation mechanism 67 is controlled in accordance with the mode designated by the operation unit 93, the mode can be easily switched only by software control without mechanical change.

  The feeding roller 45, the first conveyance roller 56 and the belt 59 of the first separation unit 51, and the second conveyance roller 68 and the second reverse rotation roller 71 of the second separation unit 52 are driven by individual motors. However, if the rollers and belts are driven by a single motor via a transmission mechanism, the motors can be shared.

  Further, except for the belt of the first separation unit 51 of the separation unit 33, a roller and a belt are included in the conveyance rotation body of the first separation unit 51 and the conveyance rotation body and the reverse rotation body of the second separation unit 52. Any of these may be used.

  Further, the paper sheet to be processed by the paper sheet separating and conveying apparatus is not limited to a form, but may be any thin sheet such as a bill or a document. Therefore, the paper sheet processing machine using the paper sheet separating and conveying apparatus is not limited to the form sorting machine, and any machine having processing for separating and conveying paper sheets may be used.

12 Forms as paper sheets
12a Single forms as single sheets
12b Spell forms as sheets
15 Paper sheet separating and conveying device
32 Feeding section
51 First separator
52 Second separator
54 First transport mechanism
55 First reverse rotation mechanism
59 belt
59a Belt surface
66 Second transport mechanism
67 Second reverse rotation mechanism
91 Control unit
93 Control section

Claims (4)

A feeding unit that sequentially feeds paper sheets from a group of paper sheets accumulated in a plurality of sheets;
A first transport mechanism that feeds the paper sheets fed by the feeding section in the transport direction, and other paper sheets that are sent along with the paper sheets that are fed in the transport direction by the first transport mechanism in the anti-transport direction. The first reverse rotation mechanism includes a belt having a belt surface disposed along the conveyance direction from the position facing the first conveyance mechanism to the upstream side in the conveyance direction. A paper sheet separating / conveying apparatus, comprising: a first separation unit in which the belt is reversed with respect to the conveying direction. The belt surface of the belt is intruded obliquely from the upstream side to the downstream side in the transport direction with respect to a feeding area in which the paper sheets are fed from the paper sheet group by the feeding unit. The paper sheet separating and conveying apparatus as described. A second transport mechanism that sends the paper sheets that have passed through the first separation unit in the transport direction; and a second reversing mechanism that faces the second transport mechanism. When the target paper sheet is a single paper sheet one by one, another single paper sheet sent along with the single paper sheet sent in the transport direction by the second transport mechanism is moved in the anti-transport direction. In the case of a bound paper sheet in which a plurality of paper sheets to be processed are bound, the second transport mechanism and the second transport mechanism rotate to send the bound paper sheets in the transport direction. The paper sheet separating and conveying apparatus according to claim 1 or 2, further comprising a separating unit. An operation unit for specifying a mode of whether a paper sheet to be processed is a single paper sheet or a spelled paper sheet;
The paper sheet separating and conveying apparatus according to claim 3, further comprising a control unit that controls a rotation direction of the second reverse rotation mechanism in accordance with a mode designated by the operation unit.

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