JP2010235302A - Sheet positioning device and sheet processing line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet positioning device generating no quality trouble in a sheet when positioning the sheet. <P>SOLUTION: This sheet positioning device includes a sheet holding and conveying means and eccentric rollers. A plurality of the eccentric rollers are provided on one side of the sheet holding and conveying means, while one or a plurality of the eccentric rollers are provided on the other side. When positioning the sheet, a major axis side peripheral edge of each of the eccentric rollers is disposed to abut on a side edge of the sheet. The eccentric roller on the one side rotates in a fixed direction so that the major axis side peripheral edge may simultaneously abut on the side edge of the sheet and a rotating direction of the major axis side peripheral edge may be the same as a conveying direction of the sheet. The eccentric roller on the other side rotates in an opposite direction of the eccentric roller on the one side, abuts on the side edge at the same time as the eccentric roller on the one side and rotates so that the rotating direction of the major axis side peripheral edge at the time may be the same as the conveying direction of the sheet. The sheet holding and conveying means releases holding of the sheet when positioning the sheet. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sheet positioning apparatus and a sheet processing line, and more particularly to a sheet positioning apparatus capable of handling high-speed conveyance of a sheet and a sheet processing line including the sheet positioning apparatus.

  In the processing line of a lithographic printing plate, a protective slip sheet is attached to the lithographic printing plate web, cut and cut into a predetermined size, and then transported by a transport conveyor and collected by a stacking device.

  Here, various positioning devices are used in order to position and stack the planographic printing plates fed by the conveyor on a predetermined stacking position.

  As such a positioning device, for example, a stacking unit that stacks sheet-like bodies conveyed in two or more rows in a certain direction in layers, and two or more partitions corresponding to each of the rows in the stacking unit. There is a sheet stacking apparatus provided with stacking unit partitioning means for dividing and expanding and contracting the section in a direction perpendicular to the conveying direction of the sheet-like body (Patent Document 1).

A plurality of pairs of centering pushers which are arranged so as to face each other across a sheet material delivery path, and which align the sheet material at a predetermined position along a width direction orthogonal to the delivery direction; and the centering And a feeding means for feeding the sheet material adjusted to a predetermined position by the pusher along the feeding direction, and the centering pusher is arranged so that the interval in the width direction decreases toward the downstream side along the previous feeding direction. In addition, there is a sheet positioning and feeding device that can be brought close to and separated from the sheet material (Patent Document 2).
JP 2004-250179 A JP 2007-091420 A

  However, in the sheet stacking apparatus that positions the sheets in the stacking unit, the sheet between the transport conveyors is due to the fact that the flatness of the sheets varies and the belt of the transport conveyor deteriorates due to long-term use. When a sheet is transferred, a defective transfer of the sheet may be demagnetized, hitting the integrated guide plate of the positioning device, causing quality problems such as corner breakage or integrated flaws, and troubles such as stoppage of the processing line due to sheet jamming.

  Further, in a positioning device having a plurality of pairs of centering pushers, the sheet is positioned after stopping the sheet conveyance, so that it is difficult to apply to a processing line for processing and accumulating sheets at high speed.

  The present invention has been made to solve the above-mentioned problems, and can prevent quality troubles from occurring during sheet positioning, and can be easily applied to a high-speed processing line that cuts a web at a high speed to form a sheet. An object of the present invention is to provide a sheet positioning device applicable to the above and a sheet processing line having the sheet positioning device.

  According to the first aspect of the present invention, there is provided a sheet holding / conveying means for conveying the sheet while being held at a fixed position along a predetermined conveying direction, and an eccentric rotation shaft provided on both sides of the sheet holding / conveying means. And an eccentric roller that rotates in the direction orthogonal to the conveying direction of the sheet conveyed by the sheet holding and conveying means by rotating around the rotation shaft, and the eccentric roller holds the sheet holding A plurality of sheets are provided along the conveying direction on one side of the conveying means, and one or a plurality are provided along the conveying direction on the other side of the sheet holding and conveying means. At the time of positioning, the long-diameter side periphery, which is the longest distance from the axis of the rotating shaft at the periphery of the eccentric roller, is the side edge of the sheet held and conveyed by the sheet holding and conveying means. The eccentric roller provided on one side of the sheet holding and conveying means is in contact with the long diameter side periphery simultaneously with the side edge of the sheet and when the long diameter side periphery contacts the sheet. And the eccentric roller provided on the other side of the sheet holding / conveying means is rotated on the other side of the sheet holding / conveying means. When the long-diameter side peripheral edge contacts the side edge of the sheet simultaneously with the eccentric roller provided on the one side, and the long-diameter side peripheral edge contacts the sheet. The rotation is performed so that the rotation direction of the peripheral edge on the long diameter side is the same as the conveyance direction of the sheet, and the sheet holding and conveying means holds the sheet when the sheet is positioned by the eccentric roller. It relates to a sheet positioning device to release the.

  In the sheet positioning device according to claim 1, when the sheet is inclined with respect to the conveyance direction by the sheet holding and conveying device, the eccentric roller rotates when the sheet passes between the eccentric rollers. The peripheral edge of the long diameter side of the roller makes point contact with the side edge of the sheet, and the inclination with respect to the sheet conveying direction is corrected. Thereby, the position in the direction orthogonal to the sheet conveying direction is determined.

  According to a second aspect of the present invention, in the sheet positioning apparatus according to the first aspect, a sheet detection unit that detects an inclination amount with respect to a conveyance direction of a sheet loaded into the sheet holding and conveyance unit, and a detection in the sheet detection unit And a sheet positioning control means for rotating the eccentric roller based on the result.

  In the sheet positioning device according to claim 2, the amount of inclination with respect to the sheet conveyance direction is detected by the sheet detection unit, and whether or not the sheet positioning control unit rotates the eccentric roller based on the detection result in the sheet detection unit. decide. Therefore, even when the sheet is loaded in a state inclined with respect to the conveyance direction, the correction of the inclination is automatically performed.

  According to a third aspect of the present invention, there is provided the sheet positioning apparatus according to the first or second aspect, wherein the eccentric roller is formed such that a position in a direction perpendicular to a sheet conveying direction in the sheet holding and conveying means can be adjusted.

  In the sheet positioning apparatus according to the third aspect, since the eccentric roller is formed so that the position in the direction orthogonal to the sheet conveying direction in the sheet holding and conveying means can be adjusted, it can cope with positioning of sheets having different widths.

  According to a fourth aspect of the present invention, in the sheet positioning apparatus according to any one of the first to third aspects, the sheet holding and conveying means is a suction conveyor that sucks and conveys a sheet, and the sheet by the eccentric roller. The present invention relates to a mechanism for releasing the holding of a sheet by turning off suction at the time of positioning.

  5. The sheet positioning apparatus according to claim 4, wherein the sheet is conveyed in a state of being held on the suction conveyor by turning on the suction of the suction conveyor, and the sheet is moved to the suction conveyor by turning off the suction of the suction conveyor. You can move freely above. Here, since the suction is turned off when the sheet is positioned by the eccentric roller, the sheet is pressed by the eccentric roller and moved to a predetermined position on the suction conveyor.

  The invention according to claim 5 is a web unwinding device for unwinding a web wound in a roll shape in a certain direction, and a cutting device for cutting the web unwound by the web unwinding device into a predetermined width. A cutting device that cuts the web cut by the cutting device into a predetermined length to form a sheet, a transport conveyor that transports the sheet in a certain direction, and a transport direction of the sheet transported by the transport conveyor The present invention relates to a sheet processing line comprising: the sheet positioning apparatus according to any one of claims 1 to 4 that performs positioning in a direction orthogonal to the sheet positioning apparatus; and a sheet stacking apparatus that stacks sheets positioned by the sheet positioning apparatus.

  In the sheet processing line according to claim 5, the web unwound from the web unwinding device is cut into a predetermined size by a cutting device and a cutting device to be a sheet, which is conveyed toward the sheet stacking device by a conveyor. At the same time as being conveyed, the position in the width direction is adjusted by the sheet positioning device, and finally the sheets are stacked while being positioned in the direction along the conveying direction by the sheet stacking device.

  According to the first aspect of the present invention, since the sheet can be positioned in the direction orthogonal to the conveying direction while conveying the sheet, a sheet positioning apparatus that can cope with high-speed conveyance is provided.

  According to the second aspect of the present invention, there is provided a sheet positioning apparatus in which positioning in a direction orthogonal to the sheet conveying direction is automatically performed.

  According to the third aspect of the present invention, there is provided a sheet positioning apparatus that can cope with sheets having different dimensions in the width direction.

  According to the fourth aspect, since the suction conveyor is used as the sheet holding and conveying means, the suction is turned off when the sheet passes between the eccentric rollers, and after the sheet is positioned by passing through the eccentric roller, By turning on the suction, there is provided a sheet positioning apparatus that can effectively suppress the deviation of the sheet position after positioning.

  According to the fifth aspect of the present invention, there is provided a sheet processing line capable of stacking sheets in a state in which positioning is performed in a direction orthogonal to the conveyance direction as well as positioning along the sheet conveyance direction.

FIG. 1 is a perspective view showing a configuration of an upstream portion of a processing line of a lithographic printing plate according to the first embodiment. FIG. 2 is a perspective view illustrating a configuration of a downstream portion of the processing line of the planographic printing plate according to the first embodiment. FIG. 3 is a schematic diagram illustrating an outline of the configuration of the sheet positioning apparatus included in the processing line according to the first embodiment. 4 is an enlarged view showing a configuration in the vicinity of the eccentric roller and the suction belt of the sheet positioning device shown in FIG. FIG. 5 is an enlarged view showing a configuration in the vicinity of the eccentric roller and the suction belt in another example of the sheet positioning apparatus included in the processing line according to the first embodiment. FIG. 6 is an enlarged view showing details of the configuration of the eccentric roller and its driving device of the sheet positioning device shown in FIG. FIG. 7 is an enlarged view showing an eccentric roller of the sheet positioning apparatus shown in FIG. FIG. 8 is an explanatory view showing the operation of the sheet positioning apparatus shown in FIG.

1. Embodiment 1
Hereinafter, a processing line for a lithographic printing plate web, which is an example of the sheet processing line of the present invention, will be described. An outline of the configuration of the processing line is shown in FIG. 1 and FIG.

  The processing line 10 is a processing line of a lithographic printing plate, and as shown in FIG. 1, the lithographic printing formed on the upstream side (upper right side of FIG. 1) is a material of the lithographic printing plate and is formed in a continuous strip shape. An original web web delivery machine 14 is disposed as a web unwinding device in which an original web web roll 13 in which the plate original web 12 is wound in a roll shape is detachably loaded.

  The original web roll 13 is rewound by an original web web feeder 14, and the planographic printing plate original web 12 is continuously fed downstream.

  The lithographic printing plate original web 12 delivered from the original web delivery machine 14 reaches the pressure roller 18 after curling is corrected by the leveler 16.

  The belt-like slip sheet 22 sent from the slip sheet feeder 20 is pressure-bonded to the upper surface (image forming surface) of the planographic printing plate original web 12 by the pressure roller 18. The slip sheet 22 delivered from the slip sheet feeder 20 is charged by a charging device (not shown) and electrostatically bonded to the lithographic printing plate original web 12.

  A notch 24 is disposed on the downstream side of the pressure roller 18. When changing the slit width of the lithographic printing plate original web 12, the notch 24 punches out the center portion and both side end portions along the width direction of the lithographic printing plate original web 12, respectively. Notch). By forming the notches at the center portion and both end portions of the lithographic printing plate original web 12, the shearing blade of the slitter device 26 as a cutting device can move in the axial direction within the notch portion. Accordingly, it is possible to change the width of the lithographic printing plate precursor web 12 while continuously cutting the lithographic printing plate precursor web 12 and the interleaf 22 simultaneously.

  The length of the planographic printing plate original web 12 cut by the slitter device 26 to a predetermined slit width is counted by the length measuring device 30. When the length measuring device 30 counts a preset count value, a cutting cutter 32 as a cutting device cuts the planographic printing plate original web 12 in synchronization therewith. Thereby, a lithographic printing plate 46 having a preset size is manufactured. The planographic printing plate 46 cut from the planographic printing plate web 12 is transported in the direction of arrow F while separating the planographic printing plate 46 from the transport conveyor 34 and the width direction as shown in FIG. The sheet is conveyed on a conveyance path 37 constituted by the sheet separation conveyor 42 to be fed into the sheet stacking device 50.

As shown in FIG. 2, two transport conveyors 34 are provided along the transport direction F of the planographic printing plate 46, and between the transport conveyor 34 on the upstream side and the transport conveyor 34 on the downstream side along the transport direction F. Is provided with a sorting gate 40 for switching the transport destination of the planographic printing plate 46. If the planographic printing plate 46 is defective, the planographic printing plate 46 is lined out by the sorting gate 40. The product is distributed on the belt conveyor 36, and is put into the collection box 44 by the belt conveyor 36.

  A sheet positioning device 100 that determines the position of the planographic printing plate 46 in the transport direction F is provided between the transport conveyor 34 and the sheet separation conveyor 42 on the downstream side along the transport direction F.

Hereinafter, the configuration and operation of the sheet positioning apparatus 100 will be described in detail.
As shown in FIGS. 3 and 4, the sheet positioning apparatus 100 includes a suction conveyor 102 as a sheet holding and conveying means disposed between a downstream conveyor 34 and a sheet separation conveyor 42, and both sides of the suction conveyor 102. The lithographic printing is provided on both sides of the exit rollers of the conveyor 34 and the eccentric rollers 104 and 106 provided two by two along the conveying path of the lithographic printing plate 46 as an example of the sheet. Provided between the CCD camera 110 as a sheet detection sensor for detecting the amount of inclination of the plate 46 with respect to the conveyance direction, and between the conveyance conveyor 34 and the suction conveyor 102, the downstream end along the conveyance direction F of the planographic printing plate 46 Trigger sensor 11 that sends an activation signal to the eccentric rollers 104 and 106 when the edge is detected When, and a control computer of a sheet positioning control means for controlling the eccentric roller 104, 106 based on the input from the CCD camera 110 and the trigger sensor 112 (not shown.).

  Two eccentric rollers 104 are provided along one side edge of the suction conveyor 102, and two eccentric rollers 106 are provided along the other side edge of the suction conveyor 102. Of the eccentric rollers 104 and 106, those located on the same side of the suction conveyor 102 are provided to rotate at the same phase, and those located on the opposite side across the suction conveyor 102 are 180 degrees out of phase with each other. It is provided to rotate at. Therefore, as shown in FIGS. 3 and 4, when the long diameter side of the eccentric roller 104 faces the suction conveyor 102, the long diameter side of the eccentric roller 106 also faces the suction conveyor 102. As shown in FIG. 5, one of the eccentric rollers 104 and 106 may be one and the other may be two. However, in this case, one eccentric roller, that is, only one eccentric roller, is a line connecting the rotation centers of the other eccentric rollers, that is, the two eccentric rollers arranged along the sheet conveying direction. It is arranged so as to face one point on the minute.

  The eccentric rollers 104 and 106 are arranged such that the distance D when the long-diameter side peripheral edge 104A of the eccentric roller 104 and the long-diameter side peripheral edge 106A of the eccentric roller 106 face the suction conveyor 102 is perpendicular to the conveying direction F of the planographic printing plate 46. It is arranged to be equal to the length of the side. As a result, the eccentric rollers 104 and 106 are in contact with the side edge of the planographic printing plate 46 at the long-diameter side periphery 104A (106A). Here, in each of the eccentric rollers 104 and 106, since the rotation shaft 108 is eccentrically attached, the distance from the axis of the rotation shaft 108 to the periphery is not constant, as shown in FIG. Increase or decrease within a certain range. Therefore, the portion with the longest distance from the axis of the rotating shaft 108 at the peripheral edge of the eccentric rollers 104 and 106 is defined as the long diameter side peripheral edge 104A or the long diameter side peripheral edge 106A.

  The eccentric rollers 104 and 106 are configured to be movable along the width direction of the planographic printing plate 46 so that the distance D can be adjusted in accordance with the width of the planographic printing plate 46 put into the sheet stacking device 50. .

  As shown in FIGS. 3 to 6, the eccentric rollers 104 and 106 are both disk-shaped and are mounted with the rotating shaft 108 being eccentric. In order to eliminate the trade-off between the high-speed conveyance suitability (10 m / min or more) and the durability of the lithographic printing plate 46 being bent and scratches on the end surface, the longest diameter that is the peripheral edge on the longest diameter side of the eccentric rollers 104 and 106 is used. As shown in FIGS. 7A and 7B, an elastomer is inserted into the side peripheral edges 104A and 106A, and the surface is covered with a thin metal plate (SUS spring steel such as SUS304-CSP). As a result, the lithographic printing plate 46 that is the object to be conveyed is not damaged, and the durability and scratch resistance of the metal plate in contact with the lithographic printing plate 46 are maintained. In addition, the metal plate is preferably fixed to the elastomer so that it can be replaced when consumed.

  As shown in FIGS. 3 to 7, a concentric driven gear 109 is fixed to the rotating shaft 108. The driven gear 109 of the eccentric roller 104 and the eccentric roller 106 meshes with a drive gear 113 that is rotationally driven by a servo motor 114. The servo motor 114 is fixed to the base 120, and the driven gear 109 is pivotally supported on the base 120 by the rotation shaft 108. The base 120 is fixed to the suction conveyor 102.

  As shown in FIG. 3, the suction conveyor 102 is provided with a suction belt 102A that is provided with suction holes on the entire surface and is tension-supported by a roller 102C, and a suction box 102B that is provided inside the suction belt 102A.

Hereinafter, the operation of the sheet positioning apparatus 100 will be described with reference to FIG.
As shown by a solid line in FIG. 8, before the planographic printing plate 46 is put into the sheet positioning device 100, the eccentric rollers 104 and 106 are both in a standby position in which the peripheral edge on the short diameter side faces the suction conveyor 102 side. It is said that. The suction conveyor 102 is always in a suction state, and suction is turned off only when the position of the planographic printing plate 46 is corrected.

  When the planographic printing plate 46 is transported from the transport conveyor 34 on the downstream side, the edge of the planographic printing plate 46 on the vulcanization side in the transport direction is imaged by the CCD camera 110. The image data picked up by the CCD camera 110 is input to the control computer, and the control computer obtains the amount of inclination of the planographic printing plate 46 with respect to the transport direction F, and determines whether or not the obtained amount of inclination is a predetermined value or more. The

  When it is determined that the inclination amount is equal to or greater than a predetermined value, a predetermined time has elapsed after the trigger sensor 112 detects the leading edge of the planographic printing plate 46, that is, the planographic printing plate 46 is moved between the eccentric roller 104 and the eccentric roller 106. The eccentric roller 104 and the eccentric roller 106 rotate at a time expected to be located therebetween. The eccentric roller 104 rotates in the direction of the arrow a in FIG. 8 and the eccentric roller 106 rotates in the direction of the arrow b in FIG. 8. In other words, both the eccentric rollers 104 and 106 are conveyed by the peripheral edge facing the suction conveyor 102. Rotate to move in the same direction as direction F. At this time, suction in the suction conveyor 102 is turned off, and the planographic printing plate 46 can move freely on the suction conveyor 102. By controlling the eccentric rollers 104 and 106 so as to contact only the side edge portion of the planographic printing plate 46 as described above, the eccentric rollers 104 and 106 do not contact the corner portion of the planographic printing plate 46 and the side edge portion. Therefore, problems such as corner breakage of the planographic printing plate 46, which causes a serious quality failure, do not occur. Further, from the viewpoint of durability of the surfaces of the eccentric rollers 104 and 106 and prevention of bending or scratching of the side edge portion of the planographic printing plate 46, the peripheral speed at the longest peripheral edge 104A and 106A, which is the longest peripheral edge, is lithographic printing. It is preferable to rotate the eccentric rollers 104 and 106 so that they are substantially the same speed as the conveying speed of the plate 46 and are in the same direction.

  The eccentric rollers 104 and 106 are all eccentric by the same amount with respect to the rotation shaft 108. Furthermore, the eccentric rollers 104 and the eccentric rollers 106 rotate in the same phase, and the eccentric roller 104 and the eccentric roller 106 Is rotated at a phase shifted by 180 degrees so that the long-diameter side peripheral edges 104A and 106A simultaneously contact the side edges of the lithographic printing plate 46, the lithographic printing plate positioned between the eccentric roller 104 and the eccentric roller 106 46 is correctly positioned with respect to the conveyance direction F as indicated by an arrow c from the amount of inclination with respect to the conveyance direction inclined with respect to the conveyance direction F in FIG. Here, the phases of the rotating eccentric roller 104 and the eccentric roller 106 are defined as follows. That is, one long-diameter side peripheral edge of two eccentric rollers facing each other across the suction conveyor 102 or on the same side of the suction conveyor 102 is along the conveyance direction F of the planographic printing plate 46 in the suction conveyor 102. When the center line is closest to the center line, the smaller angle among the angles formed by the center lines extending in the major axis when viewed from the direction perpendicular to the rotation center of the two eccentric rollers is defined as a phase. The phase is 0 to 180 degrees. When the eccentric roller rotates at the same speed in the same direction, the phase value is uniquely determined. Of the eccentric rollers 104 and 106, regarding the phase of the two eccentric rollers facing each other across the center line of the suction conveyor 102, the rotation of the eccentric roller on one side is regarded as a mirror image with respect to the center line of the suction conveyor 102. Compared with the eccentric roller on one side, the smaller angle of the angles formed by the center lines extending to the major axis when viewed from the direction perpendicular to the rotation center of the eccentric roller is used as the phase.

  When the planographic printing plate 46 is positioned, the suction in the suction conveyor 102 is turned on again, and the planographic printing plate 46 is sent to the sheet separating conveyor 42 while being sucked to the correct position.

  In the sheet positioning apparatus 100 according to the first embodiment, the planographic printing plate 46 can be positioned while being transported, and it is not necessary to stop the planographic printing plate 46 at the time of positioning.

  Further, when positioning the lithographic printing plate 46, since the long-diameter side peripheral edges 104A and 106A of the eccentric rollers 104 and 106 only make point contact with the side edges of the lithographic printing plate 46, quality troubles occur when positioning the lithographic printing plate 46. Can be effectively suppressed.

  Further, since the eccentric rollers 104 and 106 are rotated by separate servo motors 114, respectively, the rotational speed and phase are independently corrected based on inputs from the CCD camera 110 and the trigger sensor, and at the same time, the suction conveyor 102 and the planographic printing are used. The direction and position of the lithographic printing plate 46 can be adjusted using the frictional force with the plate 46.

  The present invention can be applied to the accumulation of various types of metal thin plates such as painted steel plates, aluminum plates, stainless plates, synthetic resin sheets, sheet paper, etc., in addition to lithographic printing plates.

10 Processing line
12 Planographic printing plate web
14 Raw web transmitter
20 Interleaf feeder
34 Conveyor
42 Sheet separation conveyor
DESCRIPTION OF SYMBOLS 50 Sheet stacking apparatus 100 Sheet positioning apparatus 102 Suction conveyor 102A Suction belt 102B Suction box 104 Eccentric roller 104A Long diameter side periphery 106 Eccentric roller 106A Long diameter side periphery 108 Rotating shaft 109 Drive gear 110 CCD camera 112 Trigger sensor 113 Drive gear 114 Servo motor 120 Base

Claims (5)

Sheet holding and conveying means for conveying the sheet in a state where the sheet is held at a certain position along a predetermined conveying direction;
Positioned in the direction perpendicular to the conveying direction of the sheet conveyed by the sheet holding and conveying means by having an eccentric rotating shaft provided on both sides of the sheet holding and conveying means and rotating around this rotating axis. An eccentric roller,
With
A plurality of the eccentric rollers are provided on one side of the sheet holding and conveying unit along the conveying direction, and one is provided on the other side of the sheet holding and conveying unit, or a plurality of eccentric rollers are provided along the conveying direction. When the sheet is positioned, the side edge of the sheet that is held and conveyed by the sheet holding and conveying means is the long-diameter side edge that is the longest distance from the axis of the rotating shaft at the edge of the eccentric roller. Arranged to contact the
The eccentric roller provided on one side of the sheet holding / conveying means is configured such that the long-diameter side periphery simultaneously contacts the side edge of the sheet and the long-diameter side periphery rotates when the long-diameter side periphery contacts the sheet. While rotating in a certain direction so that the direction is the same as the sheet conveyance direction,
The eccentric roller provided on the other side of the sheet holding and conveying means rotates in the opposite direction to the eccentric roller on the one side, and at the same time with the eccentric roller provided with the peripheral edge on the long diameter side on the one side. Abutting on the side edge of the sheet, and rotating so that the rotation direction of the longer diameter side periphery when the longer diameter side periphery contacts the sheet is the same as the sheet conveying direction,
The sheet holding and conveying means is a sheet positioning device that releases the holding of the sheet when the sheet is positioned by the eccentric roller. Sheet detecting means for detecting the amount of inclination with respect to the conveying direction of the sheet loaded into the sheet holding and conveying means;
Sheet positioning control means for rotating the eccentric roller based on the detection result in the sheet detection means;
A sheet positioning apparatus according to claim 1.   The sheet positioning apparatus according to claim 1, wherein the eccentric roller can adjust a position in a direction orthogonal to a sheet conveying direction in the sheet holding and conveying unit.   The sheet holding and conveying means is a suction conveyor that sucks and conveys a sheet, and at the time of sheet positioning by the eccentric roller, the suction is turned off to release the holding of the sheet. Sheet positioning device. A web unwinding device for unwinding the web wound in a roll shape in a certain direction;
A cutting device for cutting the web unwound by the web unwinding device into a predetermined width;
A cutting device that cuts the web cut by the cutting device into a predetermined length and forms a sheet;
A sheet conveyor according to any one of claims 1 to 4, wherein the sheet is positioned in a direction orthogonal to a conveyance direction of a sheet conveyed by the conveyance conveyor, and a conveyance conveyor that conveys the sheet in a certain direction;
A sheet stacking device for stacking the sheets positioned by the sheet positioning device;
Sheet processing line equipped with.

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