JP2012218845A - Cut paper feeding device and cut paper feeding system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cut paper feeding device and a cut paper feeding system capable of preventing alignment defect.SOLUTION: In the cut paper feeding system 100, the cut paper 90 is fed to an aligner 50 by a first and a second feeding belts 43 and 49 of the cut paper feeding device 10, and the cut paper 90 is conveyed with a single-side of its edge by the conveying rollers 55 of the aligner 50 to a single-side flat surface M1 located closer to the conveying roller group 55G of a rotating belt 71. Besides, in the cut paper feeding device 10, the horizontal movement of the cut paper group 90G is regulated by a cut paper holder 20, and the lateral side 90A of the cut paper 90 is parallel to the offset flat surface M1. The rotating shafts of the first and the second feeding belts 43 and 49 are inclined with respect to the lateral side 90A of the cut paper 90 standing still in the cut paper holder 20.

Description

  The present invention relates to a cut sheet feeding device that extracts and feeds cut sheets one by one from the bottom end of a group of cut sheets formed by stacking a plurality of rectangular cut sheets, and the cut sheet feeding apparatus and one side of the cut sheet The present invention relates to a cut sheet feeding system including an aligner that conveys while positioning.

  The cut sheet fed by this type of cut sheet feeding apparatus is subjected to various processes on the downstream side. As a specific example, printing is performed on a plain cut sheet fed by the cut sheet feeding apparatus. And a data fetching process for reading print information from a printed cut sheet fed by a cut sheet feeding device. In order to perform these processes with high accuracy, an aligner is often used as a set with a cut sheet feeding device. FIG. 15 shows an example of a conventional cut sheet feeding system 1 formed by combining the aligner 3 and the cut sheet feeding apparatus 2.

  The cut paper feeding device 2 surrounds the cut paper group by the cut paper holder 8 to regulate horizontal movement, and either the vertical side or the horizontal side of the cut paper group faces the feeding direction. It has a structure for positioning. Then, the lowermost cut sheet is pulled out in the direction parallel to the vertical side or the horizontal side by a feed rotating body 4 (for example, a feed belt) arranged below the cut sheet group and fed to the aligner 3. It has a structure that can be fed. (Refer patent document 1 for the detailed structure, for example).

  On the other hand, the aligner 3 is provided with a plurality of conveying rollers 6 arranged side by side in front of a vertically rising guide wall 5. Further, the transport roller 6 group extends in the horizontal direction and is inclined with respect to the front surface of the guide wall 5. As a result, the one side 7A of the cut sheet 7 supplied onto the transport roller 6 group and the front surface of the guide wall 5 are kept parallel to each other, and the one side 7A of the cut sheet 7 is brought into contact with the front surface of the guide wall 5. In this case, the positioning is performed (see, for example, Patent Document 2 for the detailed structure).

Japanese Patent Publication No. 11-504308 (page 10, FIG. 1) JP 2010-30766 A (paragraph [0013], FIG. 2)

  However, in the conventional cut sheet feeding system 1 described above, the cut sheet 7 rotates on the aligner 3 and is fed downstream with the corners of the cut sheet 7 abutting against the guide wall 5 or cut. One corner of the paper 7 is pressed against the guide wall 5 and curled and fed downstream, or the cut paper 7 is rotated 90 degrees with respect to the normal direction and positioned on the guide wall 5 Alignment failure such as being fed downstream in the state may occur. Various improvements have been attempted for the aligner 3 for such an alignment failure, but sufficient effects have not been achieved.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cut sheet feeding device and a cut sheet feeding system capable of suppressing the occurrence of alignment failure.

  As described above, when the cut paper is fed from the cut paper feeding device to the aligner, the cut paper moves at a high speed. Therefore, the cut paper appears to start rotating on the aligner, and the alignment failure is only the aligner. Was thought to have a cause. On the other hand, the present inventor found that the cause of the above-described alignment failure is not only in the aligner but also in the cut sheet feeding device, and considered the occurrence mechanism of the alignment failure as follows. That is, as shown in FIG. 15, in the cut sheet feeding system 1, when the cut sheet 7 is passed to the cut sheet feeding apparatus 2 and the aligner 3, the rear portion of the cut sheet 7 is the feeding belt. 4 receives a force F <b> 1 in a direction parallel to the guide wall 5, while the front portion receives a force F <b> 2 in an oblique direction with respect to the guide wall 5 from the skew feeding roller 6. That is, the cut sheet 7 receives forces in different directions at the front side portion and the rear side portion. For this reason, a moment for rotating the cut sheet 7 is generated, and one side 7A of the cut sheet 7 is inclined with respect to the guide wall 5 (in FIG. 14, the cut sheet 7 after rotation is indicated by a two-dot chain line). ) Thus, it is considered that the alignment failure occurs when the cut sheet 7 receives a moment at the boundary between the cut sheet feeding device 2 and the aligner 3.

  However, in the conventional cut sheet feeding device 2, in order to reduce the moment, the feeding direction by the feeding belt 4 of the cut sheet feeding device 2 is set to the guide wall 5 similarly to the oblique feeding roller 6 of the aligner 3. Is inclined with respect to the guide wall 5 from the beginning when the sheet is fed from the cut sheet feeding device 2, and eventually alignment failure cannot be prevented. Accordingly, the inventors of the present application have completed the inventions of claims 1 to 12 below.

  That is, the cut sheet feeding device according to the first aspect of the present invention includes a cut sheet holder that surrounds a group of cut sheets formed by stacking a plurality of rectangular cut sheets and restricts horizontal movement, and a cut sheet from the lowermost end of the group of cut sheets. In a cut sheet feeding device having a feeding rotator for extracting and feeding one sheet at a time, the rotation axis of the feeding rotator is inclined with respect to the vertical or horizontal side of the cut sheet in the cut sheet holder. It has features.

  According to a second aspect of the present invention, in the cut sheet feeding apparatus according to the first aspect, the feeding rotating body is a belt, and the outer peripheral surface of a cylinder parallel to the vertical side or the horizontal side of the cut paper in the cut paper holder. A multifeed restricting member having a cut sheet contact surface that is configured is disposed above the feed rotating body and passes between the cut sheet contact surface and the feed rotating body so that the cut sheet is removed from the group of cut sheets. It is characterized by the fact that it can be put out.

  According to a third aspect of the present invention, there is provided a cut paper feeding system for positioning and transporting the cut paper feeding device according to the first or second aspect and one side of the cut paper fed from the cut paper feeding device. The aligner includes a guide member having a flattened flat surface parallel to one side of the cut paper in the cut paper holder, and the cut paper on the flattened flat surface. A conveying unit that moves the cut sheet so as to press one side and conveys the cut sheet by the aligner conveying unit, and a feeding direction of the cut sheet by the feeding rotating body of the cut sheet feeding device. Is characterized in that it is tilted to the same side with respect to the flattened flat surface.

  According to a fourth aspect of the present invention, in the cut sheet feeding system according to the third aspect, a plurality of conveying rollers as conveying means are provided side by side in front of the one-sided flat surface of the aligner. The rotation axis of the group is tilted to one side with respect to the flattened flat surface, and the rotation axis of the most upstream conveyance roller and the rotation axis of the feeding rotating body in the conveyance roller group are parallel to each other. Has characteristics.

  The invention according to claim 5 is characterized in that, in the cut sheet feeding system according to claim 4, the transport speed of the cut sheet by the transport roller is made larger than the transport speed of the cut sheet by the feed rotating body.

  The invention according to claim 6 is characterized in that, in the cut sheet feeding system according to claim 5, a pressure roller is provided to sandwich the cut sheet in the vertical direction with the most upstream conveying roller.

  According to a seventh aspect of the present invention, in the cut sheet feeding system according to any one of the third to sixth aspects, the transport roller group includes a transport roller downstream of the rotation shaft of the upstream transport roller. The rotating shaft is characterized in that it is arranged so that the angle inclined with respect to the flattened flat surface becomes smaller.

  The invention according to claim 8 is the cut sheet feeding system according to claim 7, comprising a plurality of transport roller units in which a plurality of transport rollers are assembled so that their rotation axes are parallel to each other, and located upstream. A plurality of conveyance roller units are arranged so that the rotation axis of the conveyance roller of the conveyance roller unit is inclined to the one side with respect to the one-side flat surface with respect to the rotation axis of the conveyance roller of the conveyance roller unit located on the downstream side However, it has characteristics.

  The invention of claim 9 is the cut sheet feeding system according to any one of claims 3 to 8, wherein a rotating belt as a guide member is bridged between a pair of pulleys having a vertical rotating shaft, The surface of the rotating belt on the side of the conveying roller group is a flattened flat surface and can be moved in the conveying direction of the cut sheet by the conveying roller.

  The invention of claim 10 is characterized in that, in the cut sheet feeding system according to claim 9, the moving speed of the surface of the rotating belt on the side of the conveying roller group is the same as the moving speed of the cut sheet by the conveying roller. Have.

  The invention according to claim 11 is the cut sheet feeding system according to claim 9 or 10, wherein an annular groove is formed on the outer peripheral surface of the pulley, and an annular groove is formed on the back surface of the rotating belt perpendicular to the width direction. It has a feature in that an engagement protrusion is provided to engage with.

  A twelfth aspect of the present invention is the cut sheet feeding system according to the eleventh aspect, wherein the pair of paper sheets extends linearly in the horizontal direction and is slidable in contact with the back surface of the portion of the rotating belt located on the conveying roller group side. These belt sliding contact portions are arranged in the vertical direction, and the engaging protrusion is characterized in that it is sandwiched between the pair of belt sliding contact portions in the vertical direction.

[Invention of Claim 1]
In the cut sheet feeding device according to claim 1, the rotation axis of the feeding rotating body is inclined with respect to the vertical side or the horizontal side of the cut sheet in the cut sheet holder, so that it is stationary in the cut sheet holder. Cut paper can be pulled out and fed. Therefore, if the cut paper feeding device of the present invention is used to feed the cut paper toward the aligner, the moment that the cut paper receives at the boundary between the cut paper feeding device and the aligner can be made smaller than before. And the occurrence of alignment failure can be suppressed.

[Invention of claim 2]
According to the configuration of the second aspect, the portion where the double feed regulating member comes into contact with the cut sheet is parallel to the vertical side or the horizontal side of the cut sheet, and the rotation of the cut sheet is restricted.

[Invention of claim 3]
In the cut sheet feeding system according to claim 3, the rotation axis of the feeding rotating body of the cut sheet feeding apparatus is inclined with respect to the vertical side or the horizontal side of the cut sheet in the cut sheet holder. The cut paper that is stationary inside can be pulled out while being fed and fed toward the aligner. And in this invention, the conveyance direction of the cut sheet by the conveying means of the aligner and the feeding direction of the cut sheet by the feeding rotating body of the cut sheet feeding device are on the same side with respect to the one-side flat surface of the aligner. Since it is inclined, the moment that the cut sheet receives at the boundary between the cut sheet feeding device and the aligner can be made smaller than before, and the occurrence of alignment failure can be suppressed.

[Invention of claim 4]
According to invention of Claim 4, the moment which a cut paper receives in a cut paper feeding apparatus, an aligner, and a boundary part can be made into zero.

[Inventions of Claims 5 and 6]
According to the configuration of the fifth aspect, the cut sheet fed to the aligner from the cut sheet feeding device is conveyed faster than the feeding speed of the feeding rotating body by the conveying roller, so that the two cut sheets are partially When the sheets are overlapped and fed from the cut sheet feeding device to the aligner, the cut sheets can be separated from each other. Further, according to the configuration of claim 6, slip sheets are prevented from being sandwiched between the uppermost conveying roller and the pressure roller from above and below, and the partially overlapped cut sheets are more reliably secured. Can be separated.

[Invention of Claim 7]
According to the seventh aspect of the present invention, the angle at which the rotation shaft of the downstream transport roller is inclined with respect to the flattened flat surface is smaller than the rotation shaft of the upstream transport roller. In other words, the conveyance speed of the downstream conveyance roller is smaller than the upstream conveyance roller in terms of the component that moves the cut sheet toward the flat surface. As a result, the cut paper that has been offset to the flattened flat surface on the upstream side is prevented from being excessively pressed and curled, and the occurrence of poor alignment is suppressed.

[Invention of Claim 8]
According to the eighth aspect of the invention, a transport roller group is configured by combining a plurality of transport roller units in which a plurality of transport rollers are assembled so that their rotation axes are parallel to each other. According to this configuration, it is only necessary to adjust the angle inclined with respect to the flattened flat surface for each conveyance roller unit, so that the workability of the angle adjustment can be improved as compared with the case where the angle of the conveyance roller is adjusted one by one. .

[Inventions of Claims 9 and 10]
According to the ninth aspect of the present invention, when the cut paper that is shifted to the rotating belt is conveyed, the cut paper is prevented from rotating due to frictional resistance from the rotating belt, and the occurrence of alignment failure is suppressed. It is done. Further, if the moving speed of the surface of the rotating belt on the side of the conveying roller group is the same as the moving speed of the cut sheet conveyed by the conveying roller as in the invention of claim 10, the frictional resistance can be made zero. .

[Invention of Claim 11]
According to the invention of claim 11, since the engaging protrusion of the rotating belt engages with the annular groove of the pulley, the rotating belt can be positioned in the vertical direction with respect to the pulley.

[Invention of Claim 12]
According to the twelfth aspect of the present invention, the engaging protrusions of the rotating belt are sandwiched between the pair of belt sliding contact portions extending linearly in the horizontal direction in the vertical direction, so that the rotating belt is positioned on the conveying roller group side. The portion is prevented from being bent by its own weight.

1 is a front view of a cut sheet feeding system according to an embodiment of the present invention. Top view of aligner Side view of aligner Top view of rotating belt Cross-sectional side view of downstream belt pulley (A) Side sectional view of upstream pulley for belt, (B) Side sectional view of belt sliding contact portion Cross section of transport roller unit (A) Front sectional view of upstream pressure roller, (B) Front sectional view of downstream pressure roller Front sectional view of cut paper feeding device Perspective view of double feed restricting member Plan view of belt feeding unit and most upstream conveying roller Top view of transport roller group and rotating belt Plan view of the cut sheet fed by the belt feeding unit Top view of cut paper fed from the cut paper feeder to the aligner Plan view of the cut paper fed from the cut paper feeding device to the aligner in the conventional cut paper feeding system

  Hereinafter, an embodiment of the cut sheet feeding device 10 and the cut sheet feeding system 100 according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the cut sheet feeding system 100 includes an aligner 50 and a cut sheet feeding apparatus 10 arranged side by side. In the cut sheet feeding system 100, the cut sheet 90 is fed to the aligner 50 by the cut sheet feeding apparatus 10, and the cut sheet feeding mechanism 52 provided in the aligner 50 is opposite to the cut sheet feeding apparatus 10 (see FIG. 1 is conveyed to the downstream apparatus 101 arranged on the right side in FIG. In the downstream apparatus 101, the cut sheet 90 is subjected to processing such as printing. In this specification, unless otherwise specified, the term “upstream” refers to the cut sheet feeding device 10 side (left side in FIG. 1) in the left-right direction, and the term “downstream” refers to downstream in the left-right direction. The side device 101 side (the right side in FIG. 1) shall be pointed out.

  The cut sheet conveyance mechanism 52 is provided on the support base 51. The lower end of the support base 51 is provided with an adjuster (not shown) that can adjust the height of the support base 51, so that the cut paper transport mechanism 52 can be adjusted to the height position of the cut paper feeding apparatus 10. ing.

  As shown in FIG. 2, the cut sheet conveyance mechanism 52 includes a guide unit 70 formed along the left-right direction at the rear end portion of the aligner 50, and a plurality of conveyance rollers 55 (“ (Corresponding to “conveying means”) is provided with a conveying roller group 55G arranged side by side in the horizontal direction.

  As shown in FIG. 3, the guide portion 70 stands up from the support base 51 and extends in the left-right direction (a direction orthogonal to the paper surface in FIG. 3), and projects forward from the upper end of the belt support wall 73. And an overhanging wall 74. The belt support wall 73 has a leg portion 73 </ b> A fixed to the top plate 51 </ b> A of the support base 51 with a bolt. The leg portion 73A is provided with a rib 73C for reinforcing the standing wall 73B of the belt support wall 73.

  The overhanging wall 74 includes a wide portion 74A that extends in a strip shape in the left-right direction when viewed from above, and a narrow portion 74B that has a forward overhang amount smaller than the wide portion 74A on the upstream side of the wide portion 74A. (See FIG. 2). A belt motor 75 is attached to the downstream end of the wide portion 74A. In the belt motor 75, the end surface on the rotation output shaft side is abutted against the upper surface of the wide portion 74A, and the rotation output shaft vertically penetrates the wide portion 74A (see FIG. 3).

  A pair of belt pulleys 72 and 72 (corresponding to the “pulley” of the present invention) having a rotation axis parallel to the vertical direction are attached below the left and right ends of the wide portion 74A (FIG. 4). reference). Specifically, the downstream pulley 72 is attached to the rotation output shaft of the belt motor 75 described above (see FIG. 5). The upstream belt pulley 72 is attached to a rotating support shaft 78 that is disposed below the overhanging wall 74 and can be changed in position in the left-right direction by a position adjusting mechanism 72A (see FIG. 2) (FIG. 6 ( A)). An annular groove 72K is formed at an intermediate position in the vertical direction on the outer peripheral surface of the belt pulley 72.

  In addition, a belt support member 77 (see FIG. 6B) having an L-shaped cross-sectional shape in the left-right direction is provided at the intermediate portion in the left-right direction of the wide portion 74A. In the belt support member 77, one L-shaped linear portion is disposed in the front-rear direction along the lower surface of the wide portion 74A, and the other linear portion extends downward from the front end portion of the one linear portion. A belt sliding contact portion 76 extending in the left-right direction is fixed to the front surface of the belt support member 77. The belt sliding contact portion 76 is arranged from a slightly downstream position of the upstream belt pulley 72 to a slightly upstream position of the downstream belt pulley 72, with the intermediate portion in the left-right direction being linear, and both end portions being The shape is bent backward (see FIG. 4). Note that a pair of belt sliding contact portions 76 are provided, and are arranged at intervals in the vertical direction.

  As shown in FIG. 4, a rotating belt 71 (corresponding to the “guide member” of the present invention) is spanned between a pair of belt pulleys 72, 72. A portion of the rotating belt 71 disposed on the side of the conveying roller group 55G is pressed forward by belt sliding contact portions 76 and 76. When the downstream belt pulley 72 is rotationally driven by the belt motor 75, the surface of the rotating belt 71 on the conveying roller group 55G side moves from the upstream side to the downstream side in the conveying direction of the aligner 50. It has become. Note that the surface of the rotating belt 71 on the side of the conveying roller group 55G is the side-by-side flat surface M1 of the present invention.

  An engagement projection 71K is formed on the back surface of the rotating belt 71 (see FIGS. 5 and 6). The engagement protrusion 71K is engaged with the annular groove 72K of the belt pulley 72 in an uneven manner, and is sandwiched between the belt sliding contact portions 76 and 76. Thereby, the rotating belt 71 is positioned in the up-down direction. Further, the engaging protrusion 71K is sandwiched between the belt sliding contact portions 76 and 76 in the vertical direction. Thereby, the part located in the conveyance roller group 55G side of the rotating belt 71 is prevented from being bent by its own weight. The tension of the rotary belt 71 can be adjusted by changing the position of the upstream belt pulley 72 in the left-right direction by the position adjusting mechanism 72A (see FIG. 2).

  As shown in FIG. 2, the conveyance roller group 55G has an end portion on the side away from the offset flat surface M1 in the rotation axis direction from a state in which the rotation axis is parallel to the reference line L1 orthogonal to the offset flat surface M1. The aligner 50 is disposed so as to be inclined toward the downstream side (right side in FIG. 2) in the transport direction. That is, the rotation shaft of the transport roller group 55G is inclined downstream (the right side in FIG. 2) with respect to the offset flat surface M1.

  Specifically, the rotation axis of the second downstream conveyance roller 55C located on the most downstream side in the conveyance roller group 55G and the rotation axis of the first downstream conveyance roller 55B arranged adjacent thereto are orthogonal to the offset flat surface M1. The rotation shaft of the transport roller 55 upstream of the first and second downstream transport rollers 55B and 55C is inclined downstream with respect to the offset flat surface M1. Further, the most upstream conveying roller 55A located at the most upstream of the conveying roller group 55G has the largest angle of inclination with respect to the one-sided flat surface M1 in the conveying roller group 55G. Of the transport roller group 55G, the remaining transport rollers 55 excluding the most upstream transport roller 55A and the first and second downstream transport rollers 55B and 55C are divided into a plurality of groups in the transport direction of the aligner 50. Each group is assembled to a transport roller unit 56 that has a box shape as a whole (see FIGS. 3 and 7).

  Among the plurality of transport roller units 56, the angle at which the rotation shaft of the transport roller 55 is inclined with respect to the one-side flat surface M1 is different. Specifically, the transport roller 55 of the transport roller unit 56 positioned on the upstream side has a rotation shaft on the downstream side with respect to the offset flat surface M1 relative to the transport roller 55 of the transport roller unit 56 positioned on the downstream side. Tilted. Then, the rotation axis of the conveyance roller 55 in the conveyance roller unit 56 located on the most downstream side is inclined to the downstream side by, for example, 0.5 degrees with respect to the direction orthogonal to the one-side flat surface M1 (see FIG. 2). ). That is, the conveyance direction of the conveyance roller 55 of the conveyance roller unit 56 located on the most downstream side is substantially parallel to the one-side flat surface M1. Here, the moving speed of the rotary belt 71 described above is set to be the same as the conveying speed of the conveying roller 55, and is parallel to the offset flat surface M1 of the conveying speed of the conveying roller 55 of the conveying roller unit 56 located on the most downstream side. This component has approximately the same magnitude as the moving speed of the rotating belt 71.

  As shown in FIGS. 3 and 7, the transport roller unit 56 has a structure in which the surrounding wall 58 stands up from the base board 57 and is supported by unit mounting portions 59 provided at both ends in the front-rear direction of the base board 57. It is fixed to the base 51. The unit mounting portion 59 is configured such that a nut (not shown) is screwed from below the top plate 51A to a bolt portion (not shown) penetrating the top plate 51A of the support base 51 in the vertical direction. It is sandwiched.

  Of the surrounding wall 58, the wall facing in the front-rear direction protrudes above the wall facing in the left-right direction, and a plurality of transport rollers 55 are pivotally supported in parallel on the protruding portion. The transport roller 55 is rotationally driven by a transport rotational drive source 64 that is fixed to the base board 57 and accommodated inside the transport roller unit 56.

  Specifically, a plurality of conveying pulleys 60 are disposed below the rear end portion of the conveying roller 55, and below the plurality of conveying pulleys 60, the rotation output shaft 64 </ b> A of the conveying rotation drive source 64 is provided. An attached drive pulley 62 is arranged. A timing belt 63 is bridged between the plurality of conveying pulleys 60 and the driving pulley 62 and is in contact with the lower surface of the conveying roller 55. Thereby, when the rotation output shaft 64A of the rotation drive source for conveyance 64 is rotationally driven, the plurality of conveyance rollers 55 rotate in the same direction at the same speed. The transport pulley 60 and the drive pulley 62 are pivotally supported by a pulley support member 61 provided in front of the rear wall 58C, and the pulley support member 61 is provided on the rotation output shaft 64A side of the transport rotation drive source 64. The end face is fixed.

  Between the conveyance roller units 56, the rotation speed of the conveyance rotation drive source 64 is controlled to be the same, and the rotation speeds of all the conveyance rollers 55 are the same. Specifically, a brushless motor is used for the rotation drive source 64 for conveyance, and these are inverter-controlled.

  As shown in FIG. 8B, the first and second downstream transport rollers 55B and 55C are arranged on the downstream roller support member 67 fixed to the support base 51 on the downstream side of the transport roller unit 56 located on the most downstream side. It is pivotally supported.

  The first downstream conveyance roller 55B receives a driving force from the conveyance roller 55 of the conveyance roller unit 56 via a friction wheel 67A disposed between the conveyance roller 55 of the conveyance roller unit 56 located on the most downstream side. It has become. The second downstream conveyance roller 55C is rotated at the same speed in the same direction as the first downstream conveyance roller 55B by a friction wheel 67B provided between the second downstream conveyance roller 55B. As a result, the first and second downstream transport rollers 55B and 55C rotate in the same direction as the transport roller 55 at the same speed.

  Further, the downstream roller support member 67 includes a plurality of downstream pressure rollers 68 above the second downstream conveyance roller 55C. The downstream pressure roller 68 is attached to a downstream shaft 68S parallel to the rotation axis of the first downstream conveyance roller 55B so as to be integrally rotatable (see FIG. 2), and the cut sheet is vertically cut between the first downstream conveyance roller 55B. 90 (see FIG. 1) is sandwiched. Specifically, an upper transmission gear 68H and a lower transmission gear 67H having the same diameter are attached to the downstream shaft 68S and the rotation shaft of the second downstream conveyance roller 55C, and the rotation of the second downstream conveyance roller 55C is accompanied. Thus, the downstream pressure roller 68 rotates at the same speed. Further, the downstream pressure roller 68 is urged downward by, for example, a compression coil spring, and the force for sandwiching the cut sheet 90 can be adjusted by adjusting the urging force.

  Each downstream pressure roller 68 is adjustable in position in the axial direction of the downstream shaft 68S. Specifically, the downstream pressure roller 68 is fixed to the downstream shaft 68S by screwing a bolt into a screw hole formed in the radial direction and tightening between the bolt and the downstream shaft 68S.

  As shown in FIG. 8A, the most upstream conveying roller 55A is pivotally supported by an upstream roller support member 65 fixed to the most upstream conveying roller unit 56, and the rotation axis is the most upstream conveying. The roller unit 56 is disposed so as to be parallel to the rotation axis of the transport roller 55. Further, the most upstream conveying roller 55A rotates in the same direction at the same speed as the conveying roller 55 of the conveying roller unit 56 located in the most upstream position via the transmission wheel 65A.

  The upstream roller support member 65 includes an upstream pressure roller 66 above the most upstream conveying roller 55A. A plurality of upstream pressure rollers 66 are attached so as to be integrally rotatable with an upstream shaft 66S parallel to the rotation axis of the most upstream conveying roller 55A (see FIG. 2), and the cut sheet 90 is vertically moved between the upstream pressing roller 66 and the most upstream conveying roller 55A. (See FIG. 1). Similarly to the downstream pressure roller 68, the upstream pressure roller 66 also rotates at the same speed as the most upstream conveyance roller 55A due to the meshing of the upper transmission gear 66H and the lower transmission gear 65H, and exerts a force for sandwiching the cut sheet 90. It can be adjusted. Further, the position of each upstream pressure roller 66 can be adjusted in the axial direction of the upstream shaft 66S.

  Further, the upstream roller support member 65 is provided with a guide plate 65T projecting upstream. Specifically, the guide plate 65T protrudes in a direction perpendicular to the rotation axis of the most upstream conveying roller 55A (see FIG. 2), and is flush with the upper conveying surface of the most upstream conveying roller 55A.

  Next, the cut sheet feeding device 10 will be described. As shown in FIG. 9, the cut sheet feeding device 10 is formed by assembling various components to the base frame 11. The base frame 11 includes a base plate 12 fixed to the upper surface of the apparatus base 10A (see FIG. 1) and upright plates 13 and 13 that stand up from the base plate 12 and face each other in front and rear (only one is shown in FIG. 9). ) And a cover plate 14 connected to one end side (left side in FIG. 9) in the left-right direction of the upright plate 13. The cover plate 14 is attached in parallel to the horizontal plane.

  In the base frame 11, a component mounting portion 15 is provided at a substantially intermediate position in the left-right direction and between the pair of upright plates 13 and 13. A cut sheet holder 20 is provided on the upstream side of the component mounting portion 15. The cut sheet holder 20 surrounds the cut sheet group 90G in which a plurality of cut sheets 90 are stacked one above the other, and restricts horizontal movement of the cut sheet group 90G.

  Specifically, the cut sheet holder 20 has a downstream end wall 21 addressed to a surface facing the upstream side (left side in FIG. 9) of the component mounting portion 15. The downstream end wall 21 is substantially perpendicular to the cover plate 14, and the lower end portion protrudes toward the downstream side. Between the lower end edge of the downstream end wall 21 and a belt feeding unit 40 described later. The cut paper discharge port 22 through which the cut paper 90 can pass is formed. The cut paper group 90G placed on the cut paper holder 20 is abutted against the downstream end wall 21, and the downstream edge is aligned.

  Further, an end shifting member 23 is provided on the upstream side of the cut sheet holder 20. The edge shifting member 23 is integrally provided with a plurality of triangular plates 24 arranged in the facing direction of the upright plates 13 and 13 and a mounting bracket 25 for fixing the triangular plates 24 to the cover plate 14. The triangular plate 24 has a right triangle shape, and the hypotenuse contacts the upstream edge of the plurality of cut sheets 90 positioned on the lower end side among the cut sheets 90 placed on the cut sheet holder 20. Thereby, among the cut sheets 90 stacked up and down, the lower cut sheet 90 is shifted to the downstream side with respect to the upper cut sheet 90.

  The end shifting member 23 is fixed by screwing a bolt (not shown) penetrating through the mounting bracket 25 into the spiral hole 14A of the cover plate 14, and the cover plate 14 has a plurality of left and right directions. Spiral holes 14A are provided side by side. As a result, the position of the edge shifting member 23 can be selectively adjusted in the left-right direction in accordance with the dimensions of the cut sheet 90.

  The cut sheet holder 20 includes a pair of width movement restricting members 27 and 27 (see FIG. 13) that sandwich the cut sheet group 90G in the front-rear direction. The width movement restricting member 27 is fixed to the member attaching portion 15 and is disposed above the belt feeding portion 40 (see FIG. 9) described in detail later. The distance between the pair of width movement restricting members 27, 27 can be adjusted according to the size of the cut sheet 90. The pair of width movement restricting members 27, 27, the downstream end wall 21, and the edge shifting member 23 restrict horizontal movement of the cut sheet group 90 </ b> G. Hereinafter, a side extending in the front-rear direction (vertical direction in FIG. 13) of the cut paper 90 in the cut paper group 90G is referred to as a vertical side 90B, and a side extending in the left-right direction (left-right direction in FIG. 13) is referred to as a horizontal side 90A. To. Although not shown, the rear side width movement restricting member 27 is provided with a double feed restricting member similar to the double feed restricting member 30 described below, and the double feed restricting member and the belt feeding unit 40 are connected to each other. Only one cut sheet 90 passes between them.

  As shown in FIG. 9, a multifeed restricting member 30 is provided at a position away from the cut sheet discharge port 22 to the downstream side. The double feed restricting member 30 is supported by a linear motion holding mechanism 26 attached to the downstream side of the component attaching portion 15 so as to be movable up and down, and is urged downward by a compression coil spring 30B. When the lowermost cut sheet 90 of the cut sheet group 90G is discharged from the cut sheet discharge port 22, the double feed restricting member 30 is pushed up and passes between the double feed restricting member 30 and the belt feeding unit 40. It is supposed to be.

  Specifically, the multifeed restricting member 30 forms a plurality of annular grooves 32 on the outer peripheral surface of the cylindrical portion 31 parallel to the front-rear direction (direction orthogonal to the paper surface of FIG. 9) in the cut paper feeding device 10. Each annular groove 32 has a structure in which an elastomer sliding contact ring 33 is fitted (see FIG. 10). The slidable contact ring 33 protrudes from the outer peripheral surface of the cylindrical portion 31 only at the portion facing the belt feeding portion 40 in the outer peripheral surface of the cylindrical portion 31, and is immersed in the annular groove 32 at the other portions and is cylindrical. The outer peripheral surface of 31 does not protrude. The outer peripheral surface of the lower end portion of the cylindrical portion 31 corresponds to the “cut sheet contact surface” of the present invention.

  Further, in the double feed restricting member 30, a groove in which a cylindrical portion 31 is cut out in a so-called bowl shape from the outer peripheral surface to the vicinity of the central axis at an intermediate portion in the axial direction and opposed to the belt feeding portion 40. A shaped depression 34 is formed. Further, on the side opposite to the groove-shaped depressed portion 34 across the central axis of the columnar portion 31, a connecting depressed portion 35 is formed by partially cutting the outer peripheral surface of the columnar portion 31. A portion of the double feed restricting member 30 in which the groove-shaped depressed portion 34 and the connecting depressed portion 35 are formed is fitted to the linear movement holding mechanism 26.

  Note that the cut sheet feeding device 10 has a drop-off preventing hook (not shown), for example, in order to prevent the multi-feed regulating member 30 from dropping from the linear motion holding mechanism 26 during maintenance or the like. 15, cylindrical bosses 36, 36 protruding from the double feed restricting member 30 on both sides are received inside the component mounting portion 15 in a non-contact state.

  As shown in FIG. 9, below the cut sheet holder 20, a belt feeding unit 40 for sequentially extracting a plurality of cut sheets 90 placed on the cut sheet holder 20 from the lower end side and feeding them to the aligner 50. Is provided. Specifically, the first feeding belt 43 is bridged between the first pulley 41 disposed immediately below the cut sheet holder 20 and the second pulley 42 disposed on the downstream side of the cut sheet holder 20. A plurality of first feeding belts 43 similar to the above are provided in parallel with each other in the front-rear direction of the base frame 11.

  Specifically, between the pair of upright plates 13 and 13 in the base frame 11, a first shaft 44 and a second shaft 45 that are parallel and horizontal to each other are sequentially passed from the upstream side. Both ends of the first shaft 44 and the second shaft 45 are pivotally supported by the upright plates 13 and 13 via bearings (not shown). A plurality of first pulleys 41 are pivotally supported on the first shaft 44 at intervals, and the same number of second pulleys 42 as the first pulleys 41 are pivotally supported on the second shaft 45 at intervals. . And the 1st feed belt 43 is spanned between the 1st pulley 41 and the 2nd pulley 42, respectively.

  The first feeding belt 43 uses a servo motor 46 disposed below the cover plate 14 as a drive source. That is, a relatively large output pulley 46P is fixed to an output shaft (not shown) connected to the rotor of the servo motor 46, and one of the first shaft 44 and the second shaft 45 is raised. A driving pulley (not shown) is fixed to one end portion penetrating the plate 13. And the timing belt 47 is spanned between the output pulley 46P and each drive pulley. The tension of the timing belt 47 can be adjusted by a tension roller 47T.

  The first feeding belt 43 is in frictional contact with the lower surface of the lowermost cut paper 90 in the cut paper group 90 </ b> G, thereby extracting the lowermost cut paper 90 from the cut paper discharge port 22 of the cut paper holder 20. And slide feeding. The first feeding belt 43 is provided so that the feeding surface facing upward is parallel to the cover plate 14 and parallel to the horizontal plane.

  In addition to the second pulley 42, an auxiliary pulley 45P (see FIG. 11) is fixed to the second shaft 45. In addition, an auxiliary pulley 48P is also pivotally supported on the rotating shaft 48 passed between the pair of upright plates 13 and 13 at a position in front of the belt conveying unit 40, and rotates with the auxiliary pulley 45P of the second shaft 45. A second feeding belt 49 is bridged between the auxiliary pulley 48P of the shaft 48. In other words, the second feeding belt 49 rotates in the same direction in conjunction with the first feeding belt 43. The upward feeding surface of the second feeding belt 49 and the upward feeding surface of the first feeding belt 43 are flush with each other. Further, the feeding surfaces of the first feeding belt 43 and the second feeding belt 49 are flush with the upward conveying surface of the conveying roller group 55G of the aligner 50. In the present embodiment, the first feeding belt 43 and the second feeding belt 49 correspond to the “feeding rotator” of the present invention.

  Here, the moving speed of the feeding surface of the second feeding belt 49 is the same as the moving speed of the feeding surface of the first feeding belt 43. Further, the moving speed of the conveying surface of the conveying roller 55 of the aligner 50 described above is larger than the moving speed of the feeding surface of the second feeding belt 49. That is, the conveying speed of the cut sheet 90 by the conveying roller 55 is higher than the feeding speed of the cut sheet 90 by the first feeding belt 43 and the second feeding belt.

  As shown in FIG. 9, clamp rollers 39 and 39 (only one is shown in FIG. 9) are provided on the opposite side of the cut paper holder 20 with the double feed restricting member 30 interposed therebetween. The clamp rollers 39, 39 are pivotally supported at the tips of a pair of lever arms 37, 37 connected to the rotation shaft of the multifeed restricting member 30, and are self-weighted on the conveying surface of the second feed belt 49. Then, it rotates in conjunction with the second feeding belt 49.

  By the way, in the cut sheet feeding device 10 of the present embodiment, as shown in FIG. 11, the rotation axes of the first feeding belt 43 and the second feeding belt 49 are the conveyance roller group 55G of the rotating belt 71 of the aligner 50. And the feeding direction of the cut sheet 90 by the first and second feeding belts 43 and 49, and the conveying direction of the cut sheet 90 by the conveying roller 55. However, it inclines to the same side with respect to the one-sided flat surface M1. Specifically, the rotation axes of the first feeding belt 43 and the second feeding belt 49 are parallel to the rotation axis of the most upstream conveying roller 55A (see FIG. 11), and the first feeding belt 43 and The feeding direction of the second feeding belt 49 is parallel to the conveying direction of the most upstream conveying roller 55A.

  Further, the cut paper 90 in the cut paper holder 20 has a horizontal side 90A parallel to the offset flat surface M1, and a vertical side 90B orthogonal to the offset flat surface M1. That is, the rotation axes of the first feeding belt 43 and the second feeding belt 49 are inclined with respect to the vertical side 90B and the horizontal side 90A of the cut paper 90 in the cut paper 90G.

  When the cut paper 90 is sequentially extracted from the cut paper group 90G by the first feeding belt 43 and the second feeding belt 49, the side 90A of the cut paper 90 is parallel to the flattened flat surface M1. While being maintained, it is obliquely fed toward the offset flat surface M1 (see FIG. 13). That is, the cut sheet feeding device 10 feeds the cut sheet 90 while being justified to the justified flat surface M1 side. In FIG. 13, the angle at which the rotation axes of the first and second feeding belts 43 and 49 are inclined with respect to the lateral side 90A of the cut sheet is exaggerated, and the cut in the cut sheet holder 20 is shown. A line obtained by extending the horizontal side 90 </ b> A of the paper 90 is indicated by a one-dot chain line.

  Next, operational effects of the cut sheet feeding device 10 and the cut sheet feeding system 100 will be described. In order to sequentially feed the cut sheets 90 to the downstream apparatus 101 by the cut sheet feeding system 100, first, the lateral side 90A of the cut sheets 90G in the cut sheet group 90G in the cut sheet holder 20 is the rotating belt of the aligner 20. The cut sheet feeding device 10 is set in advance so as to be parallel to 71 (the flattened flat surface M1). Then, a plurality of cut sheets 90 are stacked up and down on the cut sheet holder 20 of the cut sheet feeding apparatus 10. Then, the horizontal movement of the cut sheet group 90G is restricted, and the horizontal side 90A of the cut sheet 90 in the cut sheet holder 20 is parallel to the offset flat surface M1.

  Next, when the first feeding belt 43 is driven to rotate, the cut sheet 90 is extracted from the lower end portion of the cut sheet group 90G and is displaced toward the justified flat surface M1 (see FIGS. 11 and 13). ). At this time, the multi-feed regulating member 30 prevents the cut sheets 90 from being overlapped and fed. Further, when the multifeed restricting member 30 is sufficiently longer than the vertical side 90 </ b> B of the cut sheet 90, the contact area between the multifeed restricting member 30 and the cut sheet 90 can be made constant.

  The cut paper 90 extracted from the cut paper group 90G by the first feeding belt 43 is fed to the aligner 50 by the second feeding belt 49. At this time, the conveying speed of the conveying roller 55 is higher than the feeding speed of the second feeding belt 49, so the multifeed restricting member 30 does not function well and the two cut sheets 90 partially overlap. Even when partial double feeding occurs, the cut sheets 90 can be separated from each other. In addition, since the cut sheet 90 is sandwiched between the uppermost transport roller 55A and the upstream pressure roller 66 in the vertical direction, the cut sheet 90 is prevented from slipping on the uppermost transport roller 55A, so that the cut sheets 90 can be securely connected to each other. Can be separated.

  Here, at the boundary portion between the cut paper feeding device 10 and the aligner 50, the cut paper 90 receives a force from both the cut paper feeding device 10 and the aligner 50, so there is a concern about the rotation of the cut paper 90. . However, in this embodiment, as shown in FIG. 14, a force F3 received by the rear portion of the cut sheet 90 from the second feeding belt 49 and a force F4 received by the front portion of the cut sheet 90 from the conveying roller 55 are generated. Since they face in the same direction, the moment received by the cut sheet 90 becomes zero, and the rotation of the cut sheet 90 is suppressed.

  The cut sheet 90 fed to the aligner 50 is offset by the transport roller group 55G (see FIG. 12), and the lateral side 90A on the rear side (upper side in FIG. 12) of the cut sheet 90 is aligned with the offset flat surface M1. It is done. When the cut sheet 90 reaches the second downstream conveyance roller 55C, the cut sheet 90 is sandwiched between the second downstream conveyance roller 55C and the downstream pressure roller 68 in the vertical direction and conveyed to the downstream apparatus 101.

  As described above, in the cut sheet feeding system 100 according to the present embodiment, the cut sheet feeding apparatus 10 pulls out the cut sheet 90 that is stationary in the cut sheet holder 20 while moving it toward the aligner 50. Can be sent. Since the transport direction of the cut paper 90 by the aligner 50 and the feed direction of the cut paper 90 by the cut paper feeding device 10 are inclined to the same side with respect to the offset flat surface M1, the cut paper feed The moment received by the cut sheet 90 at the boundary between the feeding device 10 and the aligner 50 can be reduced, and the occurrence of alignment failure can be suppressed.

  Further, since the portion of the rotating belt 71 on the side of the conveying roller group 55G moves at the same speed as the cut sheet 90 conveyed by the conveying roller group 55G, when the cut sheet 90 is conveyed along the rotating belt 71, The cut paper 90 is prevented from rotating by the frictional resistance that the cut paper 90 receives from the rotating belt 71. Further, the downstream transport roller 55 is transported at a lower speed than the upstream transport roller 55 because the component that causes the cut sheet 90 to move toward the flattened flat surface M1 is smaller. It is prevented from being curled by being pressed excessively.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

(1) In the above embodiment, the “feeding rotator” of the present invention is composed of belts (first and second feeding belts 43 and 49), but may be composed of rollers.

(2) The cylindrical portion 31 of the multifeed restricting member 30 may be arranged so as to be parallel to the rotation axis of the first feed belt 43.

(3) In the above-described embodiment, the angle at which the rotation shaft of the conveyance roller 55 is inclined with respect to the one-side flat surface M1 is different between the adjacent conveyance roller units 56, but may be the same.

(4) In the cut sheet feeding device 10 of the above-described embodiment, the “feed rotating body” of the present invention is configured by two feeding belts (first and second feeding belts 43 and 49). It may be composed of only one feeding belt or may be composed of three or more feeding belts.

(5) In the above-described embodiment, the width movement restricting member 27 is provided with the double feed restricting member similar to the double feed restricting member 30, but the rotation shafts and cuts of the first and second feed belts 43 and 49 are cut. When the angle formed by the vertical side 90 </ b> B of the cut paper 90 in the paper holder 20 is small, the width movement restricting member 27 may not include the double feed restricting member.

(6) In the above-described embodiment, the conveyance roller 55 is shown as an example of the “conveyance unit” of the present invention. However, the conveyance roller 55 may be a skew feeding roller, or two types of rollers having orthogonal conveyance directions. .

DESCRIPTION OF SYMBOLS 10 Cut paper feeding apparatus 20 Cut paper holder 30 Double feed control member 43 1st feed belt (feed rotary body)
49 Second feeding belt (feeding rotating body)
50 Aligner 55 Conveying Roller 55A Uppermost Conveying Roller 55G Conveying Roller Group 56 Conveying Roller Unit 66 Upstream Pressure Roller (Pressure Roller)
71 Rotating belt 71K Engaging projection 72 Belt pulley (pulley)
72K annular groove 76 belt sliding contact portion 90 cut paper 90A horizontal side 90B vertical side 90G cut paper group 100 cut paper feeding system M1 flattened flat surface

Claims (12)

A cut paper holder that encloses a group of cut paper sheets formed by stacking a plurality of square cut papers and restricts horizontal movement; In the cut paper feeding device provided with
A cut sheet feeding device, wherein a rotation axis of the feeding rotating body is inclined with respect to a vertical side or a horizontal side of the cut sheet in the cut sheet holder. The feeding rotating body is a belt;
A double feed restricting member having a cut paper abutting surface composed of an outer peripheral surface of a cylinder parallel to the vertical side or the horizontal side of the cut paper in the cut paper holder is disposed above the feeding rotating body,
2. The cut sheet feeding device according to claim 1, wherein the cut sheet passes between the cut sheet contact surface and the feeding rotating body and is extracted from the cut sheet group. . 3. A cut sheet feeding system comprising: the cut sheet feeding apparatus according to claim 1; and an aligner for positioning and conveying one side of the cut sheet fed from the cut sheet feeding apparatus. Because
The aligner includes a guide member having a flattened flat surface parallel to the one side of the cut paper in the cut paper holder, and the cut paper so as to press the one side of the cut paper against the flattened flat surface. A transporting means for transporting in a single-sided manner,
The transport direction of the cut paper by the transport means of the aligner and the feed direction of the cut paper by the feed rotating body of the cut paper feeding device are inclined to the same side with respect to the flattened flat surface. A cut sheet feeding system characterized by having been made.   In the aligner, a plurality of transport rollers as the transport means are provided side by side in front of the flattened flat surface, and the rotation shafts of the transport roller groups are inclined to one side with respect to the flattened flat surface. 4. The cut sheet feeding system according to claim 3, wherein a rotation axis of the most upstream conveying roller in the group of conveying rollers and a rotation axis of the feeding rotating body are parallel to each other. 5. .   5. The cut sheet feeding system according to claim 4, wherein a conveyance speed of the cut sheet by the conveyance roller is larger than a feeding speed of the cut sheet by the feeding rotation body.   6. The cut sheet feeding system according to claim 5, further comprising a pressure roller that sandwiches the cut sheet in a vertical direction with the most upstream conveying roller.   The conveyance roller group is arranged such that the rotation axis of the conveyance roller on the downstream side is smaller than the rotation axis of the conveyance roller on the upstream side so that the angle inclined with respect to the offset flat surface is smaller. The cut sheet feeding system according to any one of claims 3 to 6, wherein A plurality of transport roller units each having a plurality of the transport rollers assembled so that their rotation axes are parallel to each other,
The rotation axis of the conveyance roller of the conveyance roller unit located on the upstream side is inclined to one side with respect to the one-side flat surface with respect to the rotation axis of the conveyance roller of the conveyance roller unit located on the downstream side. The cut sheet feeding system according to claim 7, wherein a plurality of the transport roller units are arranged.   A rotating belt as the guide member is bridged between a pair of pulleys having a vertical rotating shaft, the surface of the rotating belt on the side of the conveying roller group is the flattened flat surface, and the cut sheet by the conveying roller is used. The cut sheet feeding system according to any one of claims 3 to 8, wherein the cut sheet feeding system is movable in the transport direction.   10. The cut sheet feeding system according to claim 9, wherein the moving speed of the surface of the rotating belt on the side of the conveying roller group is the same as the moving speed of the cut sheet by the conveying roller. An annular groove is formed on the outer peripheral surface of the pulley,
11. The cut sheet feeding system according to claim 9, wherein an engagement protrusion that engages with the annular groove perpendicular to the width direction is provided on a back surface of the rotating belt. A pair of belt sliding contact portions that extend linearly in the horizontal direction and are slidable in contact with the back surface of the portion of the rotating belt located on the side of the conveying roller group;
The cut sheet feeding system according to claim 11, wherein the engaging protrusion is sandwiched between the pair of belt sliding contact portions in a vertical direction.

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