JP2007084248A - Web processing line, sheet stacking line, and sheet stacking method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a web processing line for effectively preventing the deposition of the cutting chips of sheet materials such as lithographic printing forms on the surface of a side stopper of a stacker, and also to provide a sheet stacking line and a sheet stacking method. <P>SOLUTION: The web processing line comprises: a slitting means for slitting a web material being carried in a fixed carrying direction at a predetermined width; a cutting means for cutting the web material slitted into the predetermined width by the slitting means, in the direction perpendicular to the carrying direction; the stacker for stacking the sheet materials cut by the cutting means; and a lubricant applying means for applying volatile lubricant to the edge of the web material slit by the slitting means or the edges of the sheet materials along the carrying direction. The lubricant applying means is provided on the upstream side of the stacker in the carrying direction. The sheet stacking line and the sheet stacking method are also provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a web processing line, a sheet stacking line, and a sheet stacking method, and in particular, a side stopper that the stacking apparatus has foreign matter such as chips attached to the periphery of the sheet material when the sheet material is charged. The present invention relates to a web processing line, a sheet stacking line, and a sheet stacking method that can effectively prevent adhesion to the sheet.

  In the processing line for lithographic printing plates, the lithographic printing plates that have been pasted with slip sheets, cut into product sizes, etc., are stacked on conveyor devices such as belt conveyors, roller conveyors, belt conveyors, etc. Is transported to a lithographic printing plate stacker installed at the end of the processing line.

  For example, the stacking device is provided with a stacking plate for receiving a planographic printing plate loaded from the conveying device, and for positioning the planographic printing plates sequentially loaded on the stacking plate to predetermined stacking positions, respectively. A back stopper, a front stopper, and a pair of side guides are disposed.

  The back stopper is elastically supported by a coil spring or the like and is disposed so as to face the front end portion of the planographic printing plate on the stacking surface. The back stopper elastically receives the leading end of the lithographic printing plate that is about to move in the conveying direction by inertia force when the lithographic printing plate is introduced from the conveying device onto the stacking surface, and moves toward the conveying direction of the lithographic printing plate. The movement is restricted, and the planographic printing plate is urged in the direction opposite to the transport direction as necessary. Further, the front stopper is disposed so as to face the rear end portion of the planographic printing plate on the stacking surface, and the movement of the transport stopper in the transport direction is restricted by the back stopper, or the planographic plate urged in the direction opposite to the transport direction. Abutting against the printing plate, the lithographic printing plate is positioned along its length.

  On the other hand, the side guides are arranged so as to face both end portions of the planographic printing plate on the stacking surface. A side stopper, which is a replaceable member formed of a high-strength plate material such as a stainless steel plate or a spring steel plate, is elastically attached to the surface of the side guide that contacts the planographic printing plate.

Therefore, when the transport device sequentially puts a plurality of planographic printing plates onto the stacking surface of the stacking device, these planographic printing plates are positioned at predetermined stacking positions on the stacking surface by the front stopper and the pair of side stoppers, respectively. , Accumulated in layers. Then, when the lithographic printing plates are accumulated on the accumulation surface by the number determined by the shipping specifications, the lithographic printing plates are loaded on a pallet or the like as a lithographic printing plate bundle (Patent Documents 1 and 2).
JP 2002-308513 A JP 2002-046924 A

  However, since the lithographic printing plate fed from the transport device collides at a high speed with the side stopper of the stacking device, the surface of the side stopper becomes rough when stacking for a long time.

  When the surface of the side stopper becomes rough, chips remaining on the periphery of the slit lithographic printing plate are likely to adhere and adhere. When chips adhere to the surface of the side stopper, it is impossible to accumulate lithographic printing plates. When this happens, it is necessary to remove the chips adhering to the surface of the side stopper with sandpaper or the like.

  Further, when the surface of the side stopper becomes rough, the friction coefficient between the peripheral edge of the lithographic printing plate and the side stopper increases, so that the lithographic printing plate does not fall completely, which may cause an accumulation trouble.

  Therefore, when the surface of the side stopper becomes rough to some extent, it is necessary to replace the side stopper with a new one.

  The present invention has been made to solve the above problem, and is a web processing line and sheet that can effectively prevent chips of sheet material such as a lithographic printing plate from adhering to the surface of a side stopper of a stacking device. An object is to provide an accumulation line and a sheet accumulation method.

  According to the first aspect of the present invention, a slit means for slitting a web material conveyed in a constant conveyance direction to a predetermined width, and a web material slit to a predetermined width by the slit means are perpendicular to the conveyance direction. Cutting means for cutting in any direction, stacking device for stacking the sheet material cut by the cutting means, edge of the web material slit by the slit means, or edge along the conveying direction of the sheet material And a lubricant application means for applying a volatile lubricant to the web processing line. The lubricant application means relates to a web processing line provided on the upstream side of the stacking device with respect to the transport direction.

  The invention according to claim 2 further includes a conveying unit that sequentially inputs the sheet material cut by the cutting unit into the stacking device, and the stacking device stacks the sheet material loaded by the conveying unit. A pair of side stoppers provided so as to sandwich the stacking table along a transport direction by the transport unit, and restricting movement of the sheet material on the stacking table along a direction orthogonal to the transport direction; The web processing line according to claim 1, comprising:

  In the web processing line, since the friction between the sheet material and the side stopper in the stacking device is reduced by the volatile lubricant at the edge along the conveying direction of the sheet material, the edge of the sheet material Even if chips remain, the chips do not adhere to the surface of the side stopper.

  Also, since the volatile lubricant evaporates in a short time, even when the sheet material is a lithographic printing plate, unlike ordinary lubricating oil for processing, it stays in the plate making layer for a long time, causing a chemical reaction and developing failure. Troubles such as occur will not occur.

  According to a third aspect of the present invention, the lubricant application means is provided between the slit means and the cutting means, and the volatile lubricant is applied to the edge of the web material slit by the slit means. The web processing line according to 1 or 2.

  When a volatile lubricant is applied to the sheet material cut by the cutting means, the sheet material conveyance path is displaced in a direction perpendicular to the conveyance direction, in other words, along the width direction, and the sheet material is moved to a predetermined position of the stacking device. May not be accumulated. However, in the web processing line, since the volatile lubricant is applied to the web material that is slit and restrained in the width direction by the slit means, the width direction deviation caused by the application of the volatile lubricant does not occur. It does not occur. Therefore, the sheet material can be accumulated at a predetermined position of the accumulation device.

  According to a fourth aspect of the present invention, the lubricant application means is provided between the cutting means and the stacking device, and applies a volatile lubricant to an edge along the conveying direction of the sheet material. Or it relates to the web processing line described in 2.

  In the web processing line, it is only necessary to dispose the lubricant application means adjacent to the upstream side of the accumulator, and it is not necessary to provide the lubricant application means in the middle of the web processing line. Can be easily added.

  According to a fifth aspect of the present invention, the lubricant application means has a pair of swelling material that is porous and contacts an edge of the web material or sheet material, and the volatile lubricant is used as the swelling material. The web processing line according to any one of claims 1 to 4, further comprising liquid feeding means for feeding the liquid to the surface of the swelling material.

  In the web processing line, the edge of the slit web material or the edge of the sheet material along the conveying direction is pressed against the swelling material in a state where a volatile lubricant is oozed out on the surface of the swelling material. Thus, the volatile lubricant can be applied evenly to the edge of the web material or sheet material.

  Moreover, the application amount of a volatile lubricant can be adjusted by increasing / decreasing the pressing force which presses a swelling material to an edge.

  Furthermore, since the swelling material rubs the edge of the web material or the sheet material, the chips generated on the edge are removed, so that the chips are not brought into the stacking apparatus. Therefore, chips are more effectively prevented from adhering to the side stopper of the stacking device.

  The swelling material can be formed of felt or sponge, for example.

  A sixth aspect of the present invention relates to the web processing line according to the fifth aspect, further comprising a liquid feeding control unit that controls a liquid feeding amount in the liquid feeding unit.

  When a slip sheet is stacked on the web material or sheet material, the volatile lubricant applied in anticipation that the volatile lubricant applied to the edge of the web material or sheet material is absorbed by the slip sheet It is necessary to increase the amount of coating.

  Further, when the line speed is high, it is necessary to increase the application amount of the volatile lubricant, and when the line speed is low, it is necessary to decrease the application amount of the volatile lubricant.

  In the web processing line, by controlling the liquid feeding amount in the liquid feeding means by the liquid feeding control means, it is possible to attach the volatile lubricant with an appropriate coating amount depending on the line speed or the presence or absence of the interleaf. it can.

  The invention according to claim 7 relates to the web processing line according to claim 6, wherein the liquid feeding control means controls the liquid feeding amount by intermittently driving the liquid feeding means.

  In the web processing line, the liquid feeding control means intermittently drives the liquid feeding means so that the edge of the web material or sheet material is volatile to the swelling material according to the amount of volatile lubricant. Lubricant is supplied, and volatile lubricant can be applied in an optimum application amount.

  Invention of Claim 8 is located in the downward direction of the said swelling material, The receiving pan which receives the volatile lubricant which dripped down from the said swelling material is provided in any one of Claims 5-7. Web processing line.

  In the web processing line, excess volatile lubricant dripping from the swelling material is received by the receiving pan, so that excess volatile lubricant can be easily recovered. Moreover, since the chip | tip which fell from the edge of web material or a sheet | seat material is also received by the said receiving pan, the circumference | surroundings of a web processing line do not get dirty with chips.

  The invention according to claim 9 relates to the web processing line according to any one of claims 1 to 9, wherein hydrocarbons having a flash point of 21 ° C. or higher and lower than 70 ° C. are attached as the volatile lubricant.

  The invention according to claim 10 relates to the web processing line according to claim 9, wherein the volatile lubricant is a second petroleum.

  The invention according to claim 11 relates to the web processing line according to claim 10, wherein the volatile lubricant is kerosene.

  Volatile lubricants used in these web processing lines are hydrocarbons having a flash point of 21 ° C. or higher and lower than 70 ° C., in other words, second petroleums. It does not evaporate and stay on the sheet material for a long time. In addition, it is not flammable at room temperature and is highly safe because it is not ignited by electric sparks.

  Specific examples of the second petroleums include kerosene and light oil such as JIS No. 1 and JIS No. 2, but kerosene is preferable from the viewpoint of high evaporation rate and lubricity.

  According to a twelfth aspect of the present invention, in the lubricant attaching means, the volatile lubricant is attached in an amount of 0.01 to 0.5 cc per 1 m of the edge of the web material or sheet material. The web processing line according to any one of ˜11.

  By attaching the volatile lubricant in the amount of adhesion, the sheet material is sufficiently lubricated to prevent chips from adhering to the side stoppers of the stacking apparatus, and the edge of the sheet material during conveyance of the sheet material Volatile lubricant does not sag from In addition, since the volatile lubricant evaporates in a short time after accumulation, the remaining volatile lubricant does not adversely affect the quality of the sheet material.

  In the invention described in claim 13, the web material is a lithographic printing plate web, and the sheet material is a lithographic printing plate obtained by cutting the lithographic printing plate web. It relates to the web processing line described in the section.

  The web processing line is an example in which the present invention is applied to a line for slitting a lithographic printing plate web and cutting it into a lithographic printing plate.

  The invention according to claim 14 is a conveyance unit that conveys a sheet material along a certain conveyance direction, and a sheet material that is provided on the downstream side of the conveyance unit along the conveyance direction and is conveyed by the conveyance unit. And a lubricant application unit that applies a volatile lubricant to an edge along the conveyance direction of the sheet material, and the lubricant application unit includes the accumulation device with respect to the conveyance direction. The present invention relates to a sheet stacking line provided on the upstream side.

  The invention according to claim 15 is provided such that the stacking apparatus is provided so as to sandwich the stacking table along a transporting direction by the transporting unit and a stacking unit on which the sheet material input by the transporting unit is stacked. The sheet stacking line according to claim 14, further comprising a pair of side stoppers that regulate movement of the sheet material on the stacking table along a direction orthogonal to the conveyance direction.

  Since the sheet material is usually manufactured by slitting a web material to a predetermined width and then cutting the web material to a predetermined length along the conveying direction, chips may remain on the edge.

  In the sheet stacking line, the sheets are accumulated in a state where the edge of the sheet is lubricated by the volatile lubricant applied by the lubricant applying means, so that even if the edge hits the side stopper in the stacking device, chips are left. There is no adhesion to the surface of the side stopper.

  In addition, unlike general processing lubricants, volatile lubricants evaporate in a short time, so that volatile lubricants remain on the surface of the accumulated sheet material for a long time without causing a quality failure.

  The invention according to claim 16 is characterized in that the lubricant application means has a pair of swelling materials that are porous and come into contact with edges along the conveyance direction of the sheet material conveyed by the conveyance means, 16. The sheet stacking line according to claim 14, further comprising liquid feeding means for feeding a volatile lubricant to the swelling material and causing the swelling material to exude from the surface of the swelling material.

  In the sheet accumulation line, the edge of the sheet material is pressed by pressing the edge along the conveying direction of the sheet material with the volatile lubricant exuded on the surface of the swelling material. The volatile lubricant can be applied evenly.

  Moreover, the application amount of a volatile lubricant can be adjusted by increasing / decreasing the pressing force which presses a swelling material to an edge.

  Further, since the swelling material rubs the edge of the sheet material, the chips generated on the edge are removed, so that the chips are not brought into the stacking apparatus. Therefore, chips are more effectively prevented from adhering to the side stopper of the stacking device.

  The swelling material can be formed of felt or sponge, for example.

  According to a seventeenth aspect of the present invention, in the lubricant adhering means, the volatile lubricant is adhered in an amount of 0.01 to 0.5 cc per 1 m of an edge of the web material or sheet material. To the sheet stacking line.

  As described in the paragraph 11, the sheet material is sufficiently lubricated by adhering the volatile lubricant in the amount of adhesion, and the chips adhere to the side stopper of the accumulation device. In addition, the volatile lubricant does not drip from the edge of the sheet material during conveyance. In addition, since the volatile lubricant evaporates in a short time after accumulation, the remaining volatile lubricant does not adversely affect the quality of the sheet material.

  According to an eighteenth aspect of the present invention, there is provided a conveying unit that conveys a sheet material along a certain conveying direction, and a sheet material that is provided downstream of the conveying unit along the conveying direction and is conveyed by the conveying unit. A sheet stacking method for stacking sheet materials using a stacking apparatus for stacking the sheet material, wherein a volatile lubricant is attached to an edge along the conveying direction of the sheet material, and then the stacking is performed by the stacking apparatus. The present invention relates to a sheet stacking method.

  According to the sheet stacking method, for the same reason as described in the first and thirteenth aspects, the sheet material chips are prevented from aggregating on the side stopper in the stacking apparatus.

  As described above, according to the present invention, a web processing line, a sheet stacking line, and a sheet that can effectively prevent chips of sheet material such as a lithographic printing plate from adhering to the surface of the side stopper of the stacking apparatus. An integration method is provided.

1. Embodiment 1
1 to 3 show the configuration of a processing line 10 for a lithographic printing plate in which the stacking apparatus according to the first embodiment is incorporated.

  On the upstream side of the processing line 10 (upper right side in FIG. 1), as shown in FIG. 1, a web sending machine 14 is arranged, and the web sending machine 14 has a web 12 which is a material of a lithographic printing plate. A web roll 13 wound in a roll shape is detachably loaded.

  The web feeder 14 continuously feeds the web 12 from the web roll 13 to the downstream side at a speed corresponding to the line speed of the processing line 10.

  The web 12 reaches the pressure roller 18 after curling is corrected by the leveler 16. The pressure roller 18 presses the belt-shaped slip sheet 22 sent from the slip sheet feeder 20 to the upper surface (surface of the photosensitive layer) of the web 12. At this time, the interleaf paper 22 pressed onto the web 12 is charged by a charging device (not shown) and electrostatically bonded to the web 12.

  A notch 24 is disposed on the downstream side of the pressure roller 18. When the slit width of the web 12 is changed, the notch 24 punches out the center portion and both side end portions along the width direction of the web 12, and the notch portions (predetermined shapes) at the center portion and both side end portions of the web 12. Notch). Thereby, since the shearing blade 28 (see FIG. 2) of the slitter device 26 provided so as to correspond to the center portion and both side end portions of the web 12 can be moved in the axial direction within the notch portion, The width of the web 12 can be changed while continuously cutting the interleaf paper 22 simultaneously. The slitter device 26 corresponds to the slit means in the present invention.

  The web 12 cut into a predetermined slit width by the slitter device 26 is counted by the length measuring device 30. When the preset count value is counted by the length measuring device 30, the running distance is synchronized with that. The cutter 32 cuts along the web width direction. Thereby, a lithographic printing plate 46 having a preset product size is manufactured. The running cutter 32 corresponds to the cutting means in the present invention. As shown in FIG. 2, the planographic printing plate 46 cut from the web 12 is loaded on a conveying device 37 constituted by a plurality of belt conveyors 34, 42, and conveyed downstream by this conveying device 37. The sheet is fed into the stacking device 50 by the belt conveyor 42 disposed at the terminal end of the transport device 37.

  As shown in FIG. 1, when the web 12 is divided into two along the width direction by the slitter device 26 and the two planographic printing plates 46 are simultaneously cut by the running cutter 32, they are cut at the same time. The two lithographic printing plates 46 are distributed on two different belt conveyors 42 by a sorting gate or the like installed in the middle of conveyance to the stacking device 50, and are installed at different positions by these belt conveyors 42. Each of the two stacking devices 50 is loaded.

  A sorting gate 40 is provided between the belt conveyor 34 and the belt conveyor 42 to switch the transport destination of the lithographic printing plate 46 so that the lithographic printing plate 46 cut from the web 12 can be used as a sample product or a non-printed product. In the case of a non-defective product or the like, the planographic printing plate 46 is distributed onto the line-out belt conveyor 36 by the sorting gate 40 and is put into the collection box 44 by the belt conveyor 36.

  As shown in FIGS. 2 to 4, a pair of swelling materials 48 are arranged at the end of the belt conveyor 42 so as to sandwich the transport path of the planographic printing plate 46. The swelling materials 48 are arranged in the vertical direction. It is formed in a columnar shape, and is made of a porous material such as sponge, felt, or non-woven fabric and capable of holding the volatile lubricant in a state of oozing out on the surface. One end of a lubricant conduit 49 for supplying a volatile lubricant is connected to the swelling material 48. The other end of the lubricant conduit 49 is connected to a liquid feed pump (not shown) which is a liquid feed means for feeding a volatile lubricant toward the swelling material 48.

  As shown in FIG. 4, the swelling material 48 is held such that the interval is the same as the width w of the planographic printing plate 46 or slightly smaller than the width, specifically 0.1 to 5 mm. As shown in FIG. 4, the swelling material 48 is held by a blanket 47 from the outside. The swelling material 48 may be fixed in position, but is formed so that the position along the width direction of the planographic printing plate 46 can be adjusted so that the pressing force to the planographic printing plate 46 passing therethrough can be adjusted. May be. When the position of the swelling material 48 can be adjusted, the blanket 47 may be fixed, and the swelling material 48 may be configured to be movable with respect to the blanket 47, and the swelling material 48 may be fixed to the blanket 47. The blanket 47 itself may be configured to be movable.

  As the volatile lubricant, hydrocarbons having a flash point of 21 ° C. or higher and lower than 70 ° C., specifically, petroleum type 2 is used. Petroleum type 2 includes kerosene and light oil, and is a hydrocarbon having a flash point of 21 ° C. or higher and lower than 70 ° C. Specifically, kerosene or light oil is used. Of these volatile lubricants, kerosene is most preferred because of its relatively high evaporation rate, little flammability at room temperature, high safety, and low cost. As kerosene, either JIS1 or JIS2 can be used.

  The swelling material 48 is maintained in a state where the surface is wet with the volatile lubricant by supplying the volatile lubricant through the lubricant conduit 49. Therefore, when the planographic printing plate 46 passes between the swelling materials 48, it adheres to a pair of edges 46A along the conveying direction of the planographic printing plate 46.

  The supply amount of the volatile lubricant of the swelling material 48 is controlled by intermittently driving a liquid feed pump connected to the lubricant conduit 49. That is, when the slip sheet 22 is overlapped on the planographic printing plate 46, the volatile lubricant that has oozed out on the surface of the swelling material 48 is absorbed by the slip sheet 22, and therefore the drive interval of the liquid feeding pump is shortened. Increase the supply of volatile lubricants. On the other hand, when the interleaf paper 22 is not overlapped on the lithographic printing plate 46, the driving interval of the liquid feeding pump is extended to prevent the volatile lubricant from adhering excessively to the edge of the lithographic printing plate 46. Reduce the supply of lubricant. Thereby, the adhesion amount of the volatile adhesive to the edge 46A of the planographic printing plate 46 is controlled within an appropriate range.

  On the downstream side of the swelling material 48, a stacking device 50 is provided that stacks a plurality of planographic printing plates 46 sequentially fed by the belt conveyor 42 in a layered manner at a predetermined stacking position.

  As shown in FIGS. 2 to 6, the stacking device 50 is provided with a flat plate-shaped stacking table 52 on the downstream side in the conveying direction (arrow F direction) of the belt conveyor 42, and the upper surface of the stacking table 52 is a planographic printing plate 46. Is formed as a planar accumulation surface 54 on which are accumulated. As shown in FIG. 2, the stacking table 52 is supported by a lifter 56, and the lifter 56 detects a height of the uppermost planographic printing plate 46 stacked on the stacking surface 54. In accordance with a detection signal from (not shown), the stacking table 52 is moved up and down along the thickness direction of the planographic printing plate 46 so that the height of the uppermost planographic printing plate 46 is always constant.

  As shown in FIG. 3, the stacking device 50 is provided with a pair of back stoppers 58 on the downstream side of the stacking table 52 along the transport direction. The back stopper 58 is provided with a stopper plate 60 so as to face the front end surface of the planographic printing plate 46 stacked on the collecting surface 54. The stopper plate 60 is supported so that its thickness direction is substantially parallel to the conveying direction, and as shown in FIGS. 2 and 3, the base end portion of the stopper plate 60 on the side opposite to the stacking base 52 is provided. A base portion 62 made of a metal plate or a plastic plate is disposed. The tip surface of the base portion 62 on the stacking table 52 side is covered with a pad-shaped cushion material 64.

  As shown in FIG. 2, the back stopper 58 is provided with a cylinder 66 for supporting the stopper plate 60 and attenuating the impact from the planographic printing plate 46. The cylinder 66 is disposed downstream of the stopper plate 60 in the transport direction, and is fixed to the frame, floor, etc. of the processing line 10 via a bracket (not shown) so that the positional relationship with the belt conveyor 42 is not displaced. . The cylinder 66 supports the rod 68 so as to be slidable along the conveying direction, and the tip end portion of the rod 68 of the cylinder 66 is connected and fixed to the base portion 62 of the stopper plate 60. A coil spring 70 in a compressed state is disposed on the outer peripheral side of the rod 68, and the coil spring 70 always urges the stopper plate 60 in a direction opposite to the conveying direction. Here, the position of the cylinder 66 can be adjusted along the conveyance direction. Thereby, the position along the conveyance direction of the stopper plate 60 can be adjusted according to the length along the conveyance direction of the planographic printing plate 46 loaded on the stacking table 52.

  As shown in FIGS. 4 to 7, the accumulation device 50 is provided with side guides 72 on the outer sides of both (left and right) side end surfaces of the accumulation table 52. These side guides 72 are formed in a substantially rectangular and thick plate shape as a whole, the thickness direction thereof coincides with the width direction (arrow W direction) of the stacking table 52, and the longitudinal direction thereof is the transport direction. Are arranged so as to substantially match. The pair of side guides 72 have symmetrical structures and shapes along the width direction.

  As shown in FIGS. 4 and 5, the side guide 72 is provided with a housing-like frame member 76 having an opening 74 formed therein. The frame member 76 is made of a plate material such as a thick stainless plate or steel plate, and has a sufficient strength so as not to be deformed even when subjected to an impact load from the planographic printing plate 46. The frame members 76 are formed so that their positions along the width direction can be adjusted.

  As shown in FIGS. 4 to 7, a side stopper 78 is fixed to the side guide 72 inside the frame member 76. The side stopper 78 is formed of a spring steel plate, a stainless steel plate, or the like having spring properties, and is formed in a thin plate shape bent in a substantially U shape that opens outward as viewed from the transport direction. Specifically, the side stopper 78 is formed by pressing a stainless steel plate or a spring steel plate having a thickness of 0.15 mm to 0.3 mm, for example. As shown in FIG. 5, a plate-like support piece 80 is fixed to the upper end of the side stopper 78, and the side stopper 78 has a bolt 82 near the top of the frame member 76 via the support piece 80. It is fastened and fixed by. Thereby, the side stopper 78 is supported in a cantilever state so as to close the opening 74, and can be deformed in the width direction on the lower end side with respect to the support piece 80.

  As shown in FIG. 5, the side stopper 78 is formed with an inclined guide portion 84 that is inclined downward inward in the width direction on the upper end side, and a surface shape is conveyed below the inclined guide portion 84. A positioning portion 86 having a substantially rectangular shape whose direction is the longitudinal direction is formed. The positioning portion 86 is supported to be parallel to the height direction (arrow H direction) when the side stopper 78 is not deformed.

  Further, a guide portion 88 is formed at the lower end portion of the positioning portion 86 by being bent at a substantially right angle toward the frame member 76. In the guide portion 88, a slit-like guide hole 90 is formed along the width direction. On the other hand, a round bar-shaped guide protrusion 92 having an outer diameter corresponding to the width of the guide hole 90 is erected on the lower end surface of the frame member 76, and this guide protrusion 92 is inserted into the guide hole 90 of the side stopper 78. Has been. Thereby, the deformation | transformation to the twist direction of the side stopper 78 and the movement along a conveyance direction are controlled.

  As shown in FIG. 5, the frame member 76 is positioned along the width direction so that the interval D of the positioning portions 86 of the side stopper 78 becomes a length corresponding to the width of the planographic printing plate 46 loaded from the belt conveyor 42. Adjusted. Specifically, the distance D along the width direction of the pair of positioning portions 86 is set to +0 mm to −5 mm with respect to the width (slit width) of the planographic printing plate 46. At this time, the position of the positioning portion 86 is adjusted so that the distances from the center point in the width direction of the stacking table 52 are equal to each other. Further, the side stopper 78 can be bent and deformed outward in the width direction by several tens mm or more from the non-deformed state with the upper end of the positioning portion 86 as a reference.

  As shown in FIG. 5, a plurality (two in this embodiment) of air nozzles 94 are arranged inside the frame member 76. The air nozzle 94 is connected to an air source (not shown) such as a blower or a compressor for supplying air, and blows air supplied from the air source to the back surface side of the positioning portion 86 in the side stopper 78. The air pipe connecting the air nozzle 94 and the air source is provided with a solenoid valve (not shown). This solenoid valve opens the air pipe when the lithographic printing plate 46 is stacked by the stacking device 50, and It is controlled so that the air pipe is closed at the time of stopping. Thereby, when the stacking apparatus 50 is operated, an air flow from the air nozzle 94 is blown to the positioning portion 86 to the side stopper 78 and is urged inward in the width direction by the gas pressure by the air flow. At this time, the flow rate and gas pressure of the airflow from the air nozzle 94 are adjusted so that the non-deformed side stopper 78 is hardly bent and deformed. However, the greater the amount of deformation of the side stopper 78 inward in the width direction, that is, the closer the positioning portion 86 is to the air nozzle 94, the greater the urging force due to the airflow ejected from the air nozzle 94 is.

  As shown in FIGS. 4 and 6, the stacking device 50 is provided with a front stopper 96 on the upstream side of the stacking table 52 along the transport direction. The front stopper 96 is substantially rectangular and has a thick plate shape, and is arranged such that its thickness direction coincides with the transport direction and its longitudinal direction coincides with the width direction of the stacking table 52. The upper end surface of the front stopper 96 is slightly lower than the upper surface portion of the belt conveyor 42, and is processed into an R shape at the downstream end portion thereof so as to be connected to the downstream inner surface surface. Further, the inner side surface on the downstream side of the front stopper 96 is a positioning surface 98 for positioning the planographic printing plate 46 put on the stacking table 52 along the conveying direction, and this positioning surface 98 is in the height direction. Is formed in a parallel plane.

  As shown in FIG. 4, a slit-like nozzle hole 100 elongated in the width direction is horizontally opened at the upper end of the positioning surface 98. In the front stopper 96, air pipes (not shown) for supplying air to the plurality of nozzle holes 100 are provided, respectively, and when the planographic printing plate 46 is accumulated, the conveying directions are directed from the plurality of nozzle holes 98, respectively. Air is blown. Thus, immediately after the loading from the belt conveyor 42, an air layer is formed between the lithographic printing plate 46 and the stacking surface 54 or between the planographic printing plates 46, and moves (slides) on the stacking surface 54 by inertial force. The movement resistance of the lithographic printing plate 46 is suppressed.

  Next, the operation and action of the integrated device 50 configured as described above will be described.

  First, when the planographic printing plate 46 is conveyed toward the stacking device 50 by the belt conveyor 42, it passes between the swelling materials 48. Thereby, the volatile lubricant adheres to the edge 46 </ b> A of the planographic printing plate 46.

  The lithographic printing plate 46 is applied with a volatile lubricant with a swelling material 48 and then placed on the stacking table 52 of the stacking device 50, and continues to move in the transport direction by inertial force and onto the stacking surface 54. Placed. At this time, since air is blown from the nozzle hole 100 of the front stopper 96, an air layer is formed along the lower surface of the planographic printing plate 46 introduced by the belt conveyor 42. The air layer suppresses frictional resistance between the lithographic printing plate 46 put on the accumulation surface 54 and the accumulation surface 54 or the accumulated lithographic printing plate 46, and the lithographic printing plate 46 on the accumulation surface 54 is smoothly conveyed. Move in the direction. Further, the position of the stacking surface 54 or the stacked planographic printing plate is always adjusted to a certain height by the lifter 56. As a result, the planographic printing plates 46 sequentially fed by the belt conveyor 42 land at substantially the same position on the stacking surface 54 without being affected by the number of planographic printing plates 46 on the stacking surface 54.

  The lithographic printing plate 46 introduced from the belt conveyor 42 onto the stacking surface 54 continues to move in the conveying direction due to the inertial force, and its leading end surface comes into contact with the pair of back stoppers 58. As a result, a load corresponding to the weight and speed of the planographic printing plate 46 acts on the stopper plate 60 in the back stopper 58. The stopper plate 60 receiving the load from the planographic printing plate 46 receives the damping force from the cylinder 66 at the same time as it moves in the transport direction while compressing and deforming the coil spring 70. Thereby, the kinetic energy of the lithographic printing plate 46 is dissipated, and the impact load acting as a reaction force from the back stopper 58 to the lithographic printing plate 46 is reduced. When the movement of the lithographic printing plate 46 in the conveyance direction is stopped, the back stopper 58 extends the rod 68 by the restoring force of the coil spring 70, and the lithographic printing plate 46 is opposite to the conveyance direction via the stopper plate 60. It is biased toward the front stopper 96.

  When the lithographic printing plate 46 receives the urging force from the back stopper 58, the air layer along the lower surface of the lithographic printing plate 46 remains. Therefore, the lithographic printing plate 46 that has received the urging force from the back stopper 58 moves smoothly in the direction of the front stopper 96 on the stacking surface 54, and the rear end surface thereof is brought into contact with the positioning surface 98 of the front stopper 96. At this time, the back stopper 58 extends the rod 68 at a sufficiently slow speed by the damping force from the cylinder 66 until the lithographic printing plate 46 contacts the front stopper 96, and the lithographic printing plate 46 contacts the front stopper 96. When contacting, the stopper plate 60 is brought into contact with the planographic printing plate 46 as shown in FIG. Thereby, the planographic printing plate 46 is positioned at a position where it abuts on the positioning surface 98 of the front stopper 96 along the transport direction.

  On the other hand, the planographic printing plate 46 is loaded onto the stacking table 52 from the belt conveyor 42 in a state where the center along the width direction coincides with the center of the stacking surface 54 and is not inclined with respect to the transport direction. As shown in FIG. 5, the pair of side stoppers 78 drop between the positioning portions 86 and are placed on the stacking surface 54 with almost no contact with the inclined guide portions 84. At this time, since the distance D between the pair of positioning portions 86 is equal to or slightly narrower than the width of the planographic printing plate 46, the planographic printing plate 46 is placed on the stacking table 52 while the side end surfaces on both sides thereof are in contact with the positioning portions 86. Fall into. Thereby, the planographic printing plate 46 placed on the stacking table 52 coincides with the center position of the stacking table 52 whose center along the width direction is the width alignment position, and has already been stacked on the stacking table 52. It is positioned so as to coincide with the other lithographic printing plate 46 in the width direction.

  When the planographic printing plate 46 is loaded from the belt conveyor 42 in a state where the center along the width direction does not coincide with the center of the accumulation surface 54 or is inclined with respect to the transport direction, the solid line in FIG. As shown, the side end surface is brought into contact with the inclined guide portion 84 of one or both side stoppers 78 and then dropped between the pair of positioning portions 86 and placed on the stacking surface 54. Thus, when the planographic printing plate 46 contacts the inclined guide portion 84 of the side stopper 78, the side stopper 78 is bent and deformed outward in the width direction by the inertial force of the planographic printing plate 46 as shown in FIG. At this time, if the bending deformation of the side stopper 78 with which the planographic printing plate 46 abuts is small, the planographic printing plate 46 slides on the inclined guide portion 84 and falls between the positioning portions 86 and is placed on the stacking table 52. Is done.

  If the side stopper 78 with which the lithographic printing plate 46 abuts is greatly deformed, the lithographic printing plate 46 is repelled by the restoring force of the side stopper 78 and abuts against the side stopper 78 on the opposite side. Bend outward in the width direction. Also in this case, when the planographic printing plate 46 falls between the positioning portions 86 of the pair of side stoppers 78, the planographic printing plate 46 is centered along the width direction with the center of the stacking table 52 by the restoring force of the side stopper 78. It is positioned so as to match the other lithographic printing plates 46 that are substantially coincident with each other and already accumulated on the accumulation stage 52 along the width direction.

  In addition, as the bending deformation of the side stopper 78 increases, the pressure applied by the air flow ejected from the air nozzle 94 increases, and the urging force applied to the planographic printing plate 46 by the bent side stopper 78 can be increased. Therefore, by appropriately adjusting the flow rate and pressure of air from the air nozzle 94, the magnitude of the urging force that acts on the planographic printing plate 46 from the side stopper 78 is optimized without changing the thickness and rigidity of the side stopper 78. it can. As a result, even if the thickness, size, weight, etc. of the lithographic printing plate 46 change, the lithographic printing plate 46 can be moved along the width direction by adjusting the flow rate and pressure of air from the air nozzle 94 corresponding to them. It is possible to reliably position at a predetermined position.

  Therefore, as described above, the planographic printing plate 46 placed on the stacking table 52 is positioned at a position where it abuts the front stopper 96 in the transport direction, and the center in the width direction is the stacking table in the width direction. Positioned so as to substantially coincide with the center of 52, the leading and trailing edges and side edges of the lithographic printing plates 46 sequentially fed from the belt conveyor 42 are stacked in layers so as to coincide with each other. When the number of planographic printing plates 46 on the stacking surface 54 reaches the number of bundles specified in the shipping specifications, the planographic printing plates 46 are transferred from the stacking device 50 to the pallet as the stacking bundle 102 (see FIGS. 2 and 3). (Not shown), etc., and transferred to the packaging / packaging process or storage warehouse.

  In the processing line 10, the planographic printing plate 46 passes through the swelling material 48 and then is loaded into the stacking device 50. Therefore, when the lithographic printing plate 46 is rubbed with the swelling material 48, the chips generated when the web 12 is slit by the slitter device 26 are almost removed and at the same time, the lithographic printing plate 46 is volatile at the edge 46A. Lubricant adheres and is put into the collecting device 50 in a lubricated state.

  Accordingly, the coefficient of friction between the lithographic printing plate 46 and the side stopper 78 is reduced, so that the side stopper 78 is not damaged even if the edge 46A hits the side stopper 78 at the time of loading, and chips remain on the edge 46A. However, chips do not adhere to the surface of the side stopper 78.

  In addition, since the volatile lubricant is applied by the swelling material 48 and the lithographic printing plate 46 is conveyed at a constant speed by the conveyor 42, the volatile lubricant uniformly adheres to the edge 46A. .

  Further, since the amount of the volatile lubricant supplied to the swelling material 48 is controlled by shortening or extending the operation interval of the liquid feeding pump, the slip sheet 22 is overlapped on the planographic printing plate 46. Even when the interleaf paper 22 is not stacked, an appropriate coating amount of the volatile lubricant adheres to the edge 46A. Therefore, when the slip sheet 22 is stacked on the planographic printing plate 46, the adhering volatile lubricant is almost absorbed by the slip sheet 22, and a sufficient amount of the volatile lubricant does not adhere to the edge 46A. In addition, when the interleaf paper 22 is not stacked on the planographic printing plate 46, an excessive amount of volatile lubricant is prevented from adhering to the edge 46A.

  In addition, kerosene and light oil are used as the volatile lubricant, but these have moderate volatility and may remain on the plate-making surface of the lithographic printing plate 46 for a long time after being accumulated in the accumulating device 50. Therefore, the volatile lubricant attached to the plate-making surface does not change the plate-making surface and cause quality failure such as plate-making failure. And since kerosene and light oil are hardly flammable at normal temperature, they are also suitable in terms of safety.

  In addition, according to the stacking device 50, the lithographic printing plate 46 can be deformed in the width direction, and the side supported by the side surface of the lithographic printing plate 46 loaded from the belt conveyor 42 is supported. When the lithographic printing plate 46 loaded from the belt conveyor 42 deviates from the center position of the stacking table 52 along the width direction, the stopper 78 urges the lithographic printing plate 46 toward the center position side to stack the stacking plate 52. By positioning the lithographic printing plate 46 accumulated on the center position at the center position, the belt conveyor can be used regardless of whether the lithographic printing plate 46 is deviated from the central position of the accumulation stage 52 along the width direction or not. The planographic printing plates 46 sequentially fed from 42 are moved to the central position of the stacking stage 52 while being dropped onto the stacking stage 52 by the pair of side stoppers 78 or immediately after being placed on the stacking stage 52. Since can be positioned better time, it can be integrated a plurality of planographic printing plates 46 on the stacking platform 52 as the side edge of the lithographic printing plate 46 inserted from the belt conveyor are matched with each other.

  Here, since the side stopper 78 has elasticity along the width direction and the rigidity along the width direction is relatively small, the side stopper 78 is biased from the center position of the stacking table 52 along the width direction. Even when the lithographic printing plate 46 collides with the side stopper 78, the impact force when the lithographic printing plate 46 collides can be reduced by the side stopper 78. Therefore, the aluminum support of the lithographic printing plate 46 fed from the belt conveyor 42 Even when the thickness is relatively thin (for example, 0.2 mm or less), it is possible to effectively prevent the vicinity of the side end portion of the planographic printing plate 46 from being deformed during positioning by the side stopper 78.

  In the stacking apparatus 50 of the present embodiment, thin stainless steel or spring steel is used as the side stopper 78 so that it can be easily bent and deformed, and the impact reaction force from the side stopper 78 to the planographic printing plate 46 is suppressed. However, the side stopper 78 having such a thickness is deformed in the long term. For this reason, an elastic member may be disposed between the frame member 76 and the vicinity of the upper end of the side stopper 78 to elastically support the entire side stopper 78. As a result, the bending deformation of the side stopper 78 at the time of collision with the planographic printing plate 46 is reduced, but the side stopper 78 swings around the connecting portion with the frame member 76 and the restoring force of the side stopper 78 is increased. In addition, the restoring force of the elastic member is applied to the lithographic printing plate 46 so that the lithographic printing plate 46 can be urged toward the side stopper 78 on the opposite side.

  Further, in the stacking apparatus 50 of the present embodiment, the side stoppers 78 are disposed on the pair of side guides 72 disposed so as to sandwich the stacking table 52, but the side stoppers 78 are disposed only on the one side guide 72, The contact portion of the other side guide with the planographic printing plate 46 may be structured so as not to be elastically deformed. Even in this case, the lithographic printing plate 46 can be positioned at a position where it abuts against the opposite side guide by the side stopper 78 in the side guide 72 on one side. Thus, a plurality of planographic printing plates 46 can be stacked on the stacking table 52.

2. Example 2
Hereinafter, in the processing line 10, an example in which the lubricant application device 110, which is an example of the lubricant application means of the present invention, is provided between the slitter device 26 and the running cutter 32 will be described.

  As shown in FIGS. 8 and 9, the lubricant application device 110 is a pair of outer application devices that apply a volatile lubricant to the side edges 12 </ b> A generated by trimming the side edges of the web 12 by the slitter device 26. 112 and an inner coating device 114 for applying a volatile lubricant to the edge 12B generated by the web 12 being slit by the slitter device 26.

  Although the inner coating device 114 is fixed to the slitter device 26, the outer coating device 112 can adjust the position along the width direction of the web 12 as shown by an arrow a in FIG. Thereby, the lubricant application device 110 can cope with the webs 12 having different widths.

  The outer coating device 112 includes a swelling material 112A that contacts the side edge 12A of the web 12 and a holding member 112B that holds the swelling material 112A from the outside.

  The holding member 112B is connected to a lubricant conduit 113 for supplying a volatile lubricant from a first liquid feed pump (not shown), and communicates the lubricant conduit 113 with the swelling material 112A. A flow path (not shown) is provided inside.

  A receiving pan 112C extends from below the holding member 112B to below the swelling material 112A. The receiving pan 112C has an L-shaped cross section as a whole, and the inner edge is bent obliquely upward.

  The inner coating device 114 includes a roof-type swelling material 114A that contacts the edge 12B and a holding member 114B that holds the swelling material 114A from below. At the center of the holding member 114B, a roof-like protrusion 114C that protrudes toward the swelling material 114A is provided.

  A lubricant conduit 115 for supplying a volatile lubricant from a second liquid feed pump (not shown) is connected to the lower portion of the holding member 114B, and a lubricant is provided inside the holding member 114B. A flow path (not shown) that connects the pipe line 115 and the swelling material 114A is provided. The flow path opens on the surface of the protrusion 114C.

  The swelling material 112A and the swelling material 114A can be formed of felt or sponge as in the swelling material 48A in the first embodiment.

  The control method for the volatile lubricant and the first and second liquid feeding pumps is also as described in the first embodiment.

  Hereinafter, the operation of the lubricant application device 110 will be described.

  In the outer coating device 112 and the inner coating device 114, when a volatile lubricant is supplied via the lubricant conduit 113 and the lubricant conduit 115, the volatile lubricant flows into the holding member 112B and the holding member 114B. The swollen member 112A and the swollen member 114A are wetted.

  In this state, when the web 12 is slit by the slitter device 26, the web 12 passes through the lubricant application device 110 while the side edge 12A is in contact with the swelling material 12A and the end edge 12B is in contact with the swelling material 114A. It is introduced into the device 30 and the running cutter 32.

  Here, as described above, since both the swelling material 112A and the swelling material 114A are wet with the volatile lubricant, in the web 12, both the side edge 12A and the end edge 12B have a volatile lubricant. Is applied.

  The web 12 with the volatile lubricant applied to the side edges 12A and the end edges 12B in this way is cut into a predetermined length by the running cutter 32 to form a planographic printing plate 46. Here, since the side edge 12A and the end edge 12B are the end edge 46A of the planographic printing plate 46, the planographic printing plate 46 conveys the belt conveyors 34 and 42 with the volatile lubricant adhered to the end edge 46A. And input to the stacking device 50.

  Further, surplus volatile lubricant and chips removed by the swelling material 112 </ b> A are received by the receiving pan 112 </ b> C, and therefore do not fall below the lubricant application device 110.

  In the lubricant application device 110 according to the second embodiment, before the web 12 is cut by the running cutter 32, a volatile lubricant is applied to the side edge 12A and the end edge 12B of the web 12 by the swelling material 112A and the swelling material 114B, respectively. It is applied. Therefore, since the volatile lubricant is applied in a state where the web 12 is restrained in the width direction by the slitter device 26, the positional deviation along the width direction does not occur. Therefore, in addition to the feature described in the embodiment liquid 1, there is a feature that the positional deviation along the width direction of the planographic printing plate 46 on the stacking surface 54 of the stacking device 50 can be further reduced.

FIG. 1 is a perspective view illustrating a schematic configuration of a processing line in which the accumulation apparatus according to the first embodiment is incorporated. FIG. 2 is a configuration diagram illustrating a schematic configuration of a processing line in which the accumulation apparatus according to the first embodiment is incorporated. FIG. 3 is a side view illustrating the configuration of the integrated device according to the first embodiment. FIG. 4 is a perspective view illustrating a configuration of the integrated device according to the first embodiment. FIG. 5 is a side view showing the configuration of the planographic printing plate stacking apparatus according to the first embodiment, and shows a state in which the planographic printing plate in the middle of dropping coincides with the center position of the stacking surface. FIG. 6 is a plan view showing a configuration of the planographic printing plate stacking apparatus according to the first embodiment. FIG. 7 is a side view showing the configuration of the lithographic printing plate stacking apparatus according to the first embodiment, and shows a state in which the lithographic printing plate in the middle of dropping is deviated from the center position of the stacking surface. FIG. 8 is a perspective view illustrating the configuration of the lubricant application device according to the second embodiment and the periphery thereof. FIG. 9 is a front view illustrating the lubricant application device according to the second embodiment as viewed from the conveyance direction.

Explanation of symbols

10 Processing line 34 Belt conveyor (conveyance means)
37 Conveying device (conveying means)
42 Belt conveyor (conveying means)
46 Planographic printing plate 47 Blanket 48 Swelling material 49 Lubricant conduit 50 Stacking device 52 Stacking base 54 Stacking surface 56 Lifter 58 Back stopper 72 Side guide 76 Frame member 78 Side stopper 84 Inclined guide section 86 Positioning section 92 Front stopper 94 Air nozzle ( Energizing force adjustment means)
96 Front stopper (stacking device)
110 Lubricating oil coating device 112 Outer coating device 112A Swelling material 112B Holding member 112C Receiving pan 113 Lubricating oil conduit 114 Inner coating device 114A Swelling material 114B Holding member 115 Lubricating oil conduit

Claims (18)

Slitting means for slitting a web material conveyed in a certain conveying direction to a predetermined width;
Cutting means for cutting the web material slit to a predetermined width by the slit means perpendicular to the transport direction;
An accumulating device for accumulating the sheet material cut by the cutting means;
Lubricant application means for applying a volatile lubricant to the edge of the web material slit by the slit means, or the edge along the conveying direction of the sheet material,
The said lubricant application means is a web processing line provided in the upstream from the said stacking apparatus with respect to the said conveyance direction. Conveying means for sequentially feeding the sheet material cut by the cutting means to the stacking device,
The integrated device is:
A stacking table on which the sheet materials thrown in by the conveying means are stacked;
A pair of side stoppers that are provided so as to sandwich the stacking table along a transport direction by the transport unit and restrict movement of the sheet material on the stacking table along a direction orthogonal to the transport direction. The web processing line according to 1.   The web processing according to claim 1, wherein the lubricant application unit is provided between the slit unit and the cutting unit, and applies a volatile lubricant to an edge of the web material slit by the slit unit. line.   3. The web processing line according to claim 1, wherein the lubricant application unit is provided between the cutting unit and the stacking device, and applies a volatile lubricant to an edge along a conveyance direction of the sheet material. The lubricant application means includes
A swelling material having porosity and contacting an edge of the web material or sheet material;
The web processing line according to claim 1, further comprising a liquid feeding unit that feeds the volatile lubricant to the swelling material and causes the swelling material to exude from the surface of the swelling material.   The web processing line according to claim 5, further comprising a liquid feeding control unit that controls a liquid feeding amount in the liquid feeding unit.   The web processing line according to claim 6, wherein the liquid feeding control unit controls the liquid feeding amount by intermittently driving the liquid feeding unit.   The web processing line according to any one of claims 5 to 7, wherein a receiving pan for receiving a volatile lubricant dripping from the swelling material is provided below the swelling material.   The web processing line according to any one of claims 1 to 8, wherein hydrocarbons having a flash point of 21 ° C or higher and lower than 70 ° C are attached as the volatile lubricant.   The web processing line according to claim 9, wherein the volatile lubricant is a second petroleum.   The web processing line according to claim 10, wherein the volatile lubricant is kerosene.   The volatile lubricant is attached in the lubricant adhering means at an adhering amount of 0.01 to 0.5 cc per 1 m of an edge of the web material or sheet material. Web processing line.   The web processing line according to any one of claims 1 to 12, wherein the web material is a lithographic printing plate web, and the sheet material is a lithographic printing plate obtained by slitting and cutting the lithographic printing plate web. . Conveying means for conveying the sheet material along a certain conveying direction;
A stacking device that is provided on the downstream side of the transport unit along the transport direction and stacks the sheet material transported by the transport unit;
Lubricant application means for applying a volatile lubricant to the edge along the conveying direction of the sheet material,
The lubricant applying unit is a sheet stacking line provided on the upstream side of the stacking device with respect to the transport direction. The integrated device is:
A stacking table on which the sheet materials thrown in by the conveying means are stacked;
A pair of side stoppers that are provided so as to sandwich the stacking table along a transport direction by the transport unit and restrict movement of the sheet material on the stacking table along a direction orthogonal to the transport direction. 14. The sheet accumulation line according to 14. The lubricant application means includes
A pair of swelling materials that have porosity and are in contact with edges along the conveying direction of the sheet material conveyed by the conveying means;
The sheet accumulation line according to claim 14, further comprising liquid feeding means for feeding the volatile lubricant to the swelling material and causing the swelling material to exude from the surface of the swelling material.     The sheet accumulation line according to claim 16, wherein in the lubricant adhering means, a volatile lubricant is adhered in an amount of 0.01 to 0.5 cc per 1 m of an edge of the web material or sheet material. Using a conveying unit that conveys a sheet material along a certain conveying direction, and an accumulation device that is provided downstream of the conveying unit along the conveying direction and accumulates the sheet material conveyed by the conveying unit. A sheet stacking method for stacking sheet materials,
A sheet stacking method comprising: stacking the stack with the stacking apparatus after attaching a volatile lubricant to an edge along the transport direction of the sheet material.

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