WO2013125284A1

WO2013125284A1 - Web conveyance device and printer

Info

Publication number: WO2013125284A1
Application number: PCT/JP2013/051314
Authority: WO
Inventors: 和也秋田; 西山　浩司; 邦博山本
Original assignee: 三菱重工印刷紙工機械株式会社
Priority date: 2012-02-20
Filing date: 2013-01-23
Publication date: 2013-08-29
Also published as: JP2013170046A; JP5972596B2

Abstract

A web pass device comprising: a slitter that cuts a conveyed web along the conveyance direction; first drag rollers that contact-roll on to the web, and are provided facing each other, straddling the web therebetween, on the opposite side to the slitter; a cutting entry guide roller (42) that contact-rolls on to the web, and is provided on the upstream side in the web conveyance direction, relative to the slitter and the first drag rollers; and a cutting exit guide roller (43) provided on the downstream side in the web conveyance direction, relative to the slitter and the first drag rollers. The cutting entry guide roller (42) and the cutting exit guide roller (43) have a roller main body (53) comprising a carbon fiber-reinforced plastic, and a metal layer (54) provided on the outer peripheral side of the roller main body (53).

Description

Web conveying device and printing machine

The present invention relates to a web conveyance device and a printing machine for conveying a web.

Conventionally, an iron roller is generally used as a guide roller for guiding a web fed from a web. The iron roller is difficult to rotate because it is heavy, and it is difficult to stop. For this reason, the iron roller that is in rolling contact with the web gives resistance to the web due to inertia. Therefore, since the web to be conveyed is affected by the inertial resistance from the iron roller, the conveyance becomes unstable.

For this reason, it is known to use a guide roller made of carbon fiber reinforced plastic for a rotary printing machine as a roller having a small rotational inertia (for example, see Patent Document 1). By using a guide roller made of carbon fiber reinforced plastic, the guide roller becomes lighter, so that the followability with respect to the web is improved and the conveyance of the web can be stabilized.

Japanese Patent Laid-Open No. 5-212846

However, since the peripheral surface of the guide roller shown in Patent Document 1 is made of carbon fiber reinforced plastic, the peripheral surface of the guide roller that is in rolling contact with the web is easily worn. In particular, the guide roller around the slitter that cuts the web along the conveying direction is such that the paper dust generated during the cutting by the slitter enters between the web and the guide roller, and the paper dust functions as an abrasive. Wear tends to occur. Further, with the guide roller made of carbon fiber reinforced plastic, it is difficult to secure the accuracy of the roundness of the guide roller because the peripheral surface is difficult to process. For this reason, the guide roller that is in rolling contact with the web having low roundness with a low accuracy may cause the web to flutter by rotating, which may make the web conveyance unstable.

Therefore, an object of the present invention is to provide a web conveyance device and a printing machine that can improve the service life by suppressing abrasion due to paper dust and stabilizing the conveyance of the web.

The web transport device of the present invention includes a slitter that cuts a web to be transported along the transport direction, a driving roller that is in rolling contact with the web, and that is provided opposite to the slitter across the web, and a web roller. And a cutting guide roller provided on at least one of the upstream side and the downstream side in the web conveyance direction with respect to the slitter and the driving roller, and the cutting guide roller is made of a fiber reinforced plastic. It has a roller main body and a metal layer provided on the outer peripheral side of the roller main body.

According to this configuration, even when paper dust is generated when the web is cut by the slitter, and the paper dust enters between the web and the guide roller for cutting, the outer periphery of the guide roller for cutting is a metal layer. Can be resistant to wear. Further, since the cutting guide roller has a metal layer on the outer periphery, the cutting guide roller can be easily processed, and thus it is possible to suitably ensure the accuracy of roundness. For this reason, the guide roller for cutting can reduce flapping of the web being conveyed. In addition, if the flapping of the web is reduced, paper dust generated when the web is cut by the slitter is less likely to enter between the cutting guide roller and the web, thereby further suppressing wear of the cutting guide roller due to paper dust. Can do. For this reason, the service life of the cutting guide roller can be improved, and as a result, the service life of the apparatus can be improved. In addition, it is preferable to use a carbon fiber reinforced plastic as the fiber reinforced plastic.

In this case, the cutting guide roller is provided on the downstream side in the web conveyance direction with respect to the cutting inlet guide roller provided on the upstream side in the web conveyance direction with respect to the slitter and the driving roller. And a cutting exit guide roller.

According to this configuration, even when paper dust is generated when the web is cut by the slitter, the abrasion due to the paper dust of the cutting inlet guide roller and the cutting outlet guide roller provided on the upstream side and the downstream side of the slitter is suppressed. In addition, the service life can be improved.

In this case, the cutting guide roller has a large-diameter portion and a small-diameter portion having different diameters in the axial direction, and a step portion is formed in the axial direction by connecting the large-diameter portion and the small-diameter portion in the axial direction. A stepped roller is preferred.

According to this configuration, since the peripheral speed of the rotating large-diameter portion is higher than the peripheral speed of the rotating small-diameter portion, the web that contacts the cutting guide roller spreads in the width direction. The generation of wrinkles can be suppressed. In addition, it is preferable to include at least a configuration in which the small diameter portion is positioned between the pair of large diameter portions.

In this case, the cutting entrance guide roller has a large-diameter portion and a small-diameter portion having different diameters in the axial direction, and a step portion is formed in the axial direction by connecting the large-diameter portion and the small-diameter portion in the axial direction. A stepped roller is preferred.

According to this configuration, since the peripheral speed of the rotating large-diameter portion is higher than the peripheral speed of the rotating small-diameter portion, the web that contacts the cutting entrance guide roller spreads in the width direction. The generation of wrinkles can be suppressed. In addition, it is preferable to include at least a configuration in which the small diameter portion is positioned between the pair of large diameter portions.

In this case, the cutting guide roller includes a pair of rolling bearings provided at a predetermined interval on a fixed shaft extending in the axial direction, and a pair of roller bases provided respectively on the outer peripheral sides of the pair of rolling bearings. It is preferable to have a roller main body spanned between the pair of roller bases and a metal layer provided on the outer peripheral side of the roller main body.

According to this configuration, the pair of roller bases, the roller body, and the metal layer rotate around the fixed shaft. For this reason, since the part other than the fixed shaft rotates, the cutting guide roller can be reduced in weight and inertia resistance can be reduced.

In this case, the cutting guide roller includes a pair of rotating shafts that are pivotally supported by a pair of rolling bearings disposed at both ends in the axial direction, and a pair of rollers provided inside the pair of rotating shafts in the axial direction. It is preferable to have a base, a roller body spanned between the pair of roller bases, and a metal layer provided on the outer peripheral side of the roller body.

According to this configuration, the cutting guide roller can be rotated by rotating the rotating shaft. For this reason, it can be set as the structure suitable when rotating the cutting guide roller.

In this case, it further includes a printing exit guide roller that is in rolling contact with the web after printing, and the printing exit guide roller has a roller body made of fiber-reinforced plastic and a metal layer provided on the outer peripheral side of the roller body. It is preferable.

According to this configuration, since the outer periphery of the printing exit guide roller is a metal layer, it can be made resistant to wear. In addition, since the outer periphery of the printing exit guide roller is a metal layer, even if the outer periphery of the printing roller adheres to the outer periphery of the printed web, ink or the like adheres to the outer periphery. It is also possible to improve the removability of deposits. As a result, the deposits can be found quickly and easily removed, so that the maintenance of the print exit guide roller can be suitably performed.

In this case, the print exit guide roller is preferably a reverse crown roller having a smaller diameter at the central portion in the axial direction than the diameter at both end portions in the axial direction.

According to this configuration, the peripheral speed at both ends in the axial direction where the diameter is large is faster than the peripheral speed at the central part in the axial direction where the diameter is small, so that the roller contacts the printing exit guide roller. Since the web spreads in the width direction, generation of wrinkles formed on the web can be suppressed.

In this case, the printing exit guide roller has a large diameter portion and a small diameter portion having different diameters in the axial direction, and the large diameter portion and the small diameter portion are continuous in the axial direction, whereby a step portion is formed in the axial direction. And it is preferable that it is a reverse crown stepped roller whose diameter in the center part of an axial direction is small compared with the diameter in the both ends of an axial direction.

According to this configuration, the peripheral speed of the rotating large-diameter portion is higher than the peripheral speed of the rotating small-diameter portion, and the peripheral speed at both axial ends where the diameter is large is It becomes faster than the peripheral speed at the central portion in the axial direction where the diameter is small. For this reason, since the web which roll-contacts to the printing exit guide roller spreads more in the width direction, generation | occurrence | production of the wrinkle formed in a web can further be suppressed. In addition, it is preferable to include at least a configuration in which the small diameter portion is positioned between the pair of large diameter portions.

In this case, it is preferable to further include a driving roller adjacent to the printing exit guide roller.

According to this configuration, the driving roller can transport the web after printing in the transport direction at a predetermined transport speed, so that the behavior of the web after printing can be stabilized.

In this case, it further includes a compensator roller for adjusting the position in the web conveyance direction, and the compensator roller has a roller body made of fiber reinforced plastic and a metal layer provided on the outer peripheral side of the roller body. It is preferable.

According to this configuration, the compensator roller can be made resistant to wear because the outer periphery is a metal layer.

In this case, it is preferable to further include a driving roller adjacent to the compensator roller.

According to this configuration, the driving roller can transport the web before and after the position adjustment in the transport direction at a predetermined transport speed, so that the behavior of the web before and after the position adjustment can be stabilized.

In this case, it is preferable that the drive roller has a roller body made of fiber reinforced plastic and a metal layer provided on the outer peripheral side of the roller body.

According to this configuration, since the outer periphery of the driving roller can be a metal layer, it can be made resistant to wear. Further, since the outer periphery of the drive roller is a metal layer, it becomes easy to process, and thus it is possible to suitably ensure the accuracy of roundness. For this reason, the driving roller can reduce flapping of the web being conveyed.

In this case, the metal layer is preferably an aluminum layer.

According to this configuration, since the weight of the roller can be reduced, the inertial resistance can be reduced, and the followability to the conveyed web can be improved.

The printing machine according to the present invention includes a paper feeding device that feeds and feeds a web from a web, a printing device that performs printing on the web fed from the paper feeding device, and the web conveyance that conveys a web printed by the printing device. And a folding machine that cuts and folds the web conveyed by the web conveying device.

According to this configuration, since the conveyance of the web can be stabilized, it is possible to suitably perform processes such as printing, cutting and folding on the web.

According to the web conveyance device and the printing machine of the present invention, it is possible to improve the service life by suppressing abrasion due to paper dust and stabilizing the conveyance of the web.

FIG. 1 is a schematic configuration diagram of a rotary printing press according to a first embodiment. FIG. 2 is a schematic configuration diagram around the slitter of the rotary printing press according to the first embodiment. FIG. 3 is a configuration diagram schematically illustrating the periphery of the slitter of the rotary printing press according to the first embodiment. FIG. 4 is a cross-sectional view of an example when the cutting entrance guide roller and the cutting exit guide roller according to the first embodiment are cut along the axis. FIG. 5 is a cross-sectional view of another example when the cutting inlet guide roller and the cutting outlet guide roller according to the first embodiment are cut along the axis. FIG. 6 is a schematic configuration diagram around a printing apparatus outlet of the rotary printing press according to the second embodiment. FIG. 7 is a partial cross-sectional view of an example when the second print exit guide roller is cut along the axis. FIG. 8 is a partial cross-sectional view of another example when the second print exit guide roller is cut along the axis. FIG. 9 is a schematic configuration diagram around the compensator roller of the rotary printing press according to the third embodiment.

Hereinafter, a web conveyance device and a printing machine according to the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the following examples. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

FIG. 1 is a schematic configuration diagram of a rotary printing press according to the first embodiment. As shown in FIG. 1, the printing press 1 in the first embodiment is a so-called newspaper offset rotary printing press 1, and creates a newspaper that becomes a compromise from a plurality of webs W. The rotary printing press 1 includes a plurality (four in the drawing) of paper feeding devices 11, a plurality (four in the drawing) of infeed devices 12, and a plurality (four in the drawing) from the upstream side in the conveyance direction of the web W. )

Printing devices

13 a and 13 b, a web pass device 14 (web transport device), and a folding machine 15.

Each paper feeding device 11 is provided with a holding arm 20 that holds three webs R each having a web W wound in a roll shape. By rotating the holding arm 20, the webs R are brought into a paper feeding position. You can face it. Each paper feeding device 11 is provided with a paper splicing device (not shown), and when the web R fed out at the paper feeding position becomes small, the paper splicing device causes the paper web R at the paper feeding position to be removed. Thus, the web R in the standby position can be spliced.

Each infeed device 12 feeds each web W toward the respective

downstream printing devices

13a and 13b and adjusts the tension of each web W. Specifically, the infeed device 12 has an infeed roller 24 that is rotationally driven by a drive motor (not shown) from the upstream side in the conveyance direction of the web W. The in-feed roller 24 can rotate to convey the web W toward the

downstream printing apparatuses

13a and 13b, and to change the tension of the web W by changing the peripheral speed. It has become.

The plurality of

printing apparatuses

13a and 13b are provided with a multicolor printing apparatus 13a that performs double-sided four-color printing and a two-color printing apparatus 13b that performs double-sided two-color printing. The multi-color printing device 13 a and the two-color printing device 13 b can perform predetermined printing on the web W supplied from each paper feeding device 11. In the first embodiment, the

printing apparatuses

13a and 13b are configured by the multi-color printing apparatus 13a and the two-color printing apparatus 13b. However, the present invention is not limited to this configuration. For example, various printing apparatuses may be used in combination as appropriate according to the printed matter, such as a double-sided monochrome printing apparatus that performs double-sided monochrome printing and a multicolor printing apparatus that performs 4-color or 2-color printing on one side.

The web pass device 14 includes a plurality of slitters 25 for cutting at the center in the width direction of the web W along the conveyance direction of the web W, a number of guide rollers and turn bars 26 for setting the conveyance path of the cut web W, A compensator roller 27 and the like for correcting a positional deviation of the web W in the transport direction are provided. Accordingly, in the web pass device 14, the webs W printed by the

printing devices

13a and 13b are cut by the slitter 25, and the web W after the cutting is changed by the turn bar 26 to change the conveyance path, and in a predetermined order. Overlapping.

The folding machine 15 includes a pair of rollers 32 that sandwich and transport the plurality of webs W fed from the web pass device 14 and a pair of rollers that sandwich and transport the plurality of webs W fed from the pair of rollers 32. 33, a triangular plate 34 that vertically folds a plurality of webs W fed from a pair of rollers 33, and a folding device (not shown) that forms a desired signature after laterally cutting the web W by a predetermined length. Have. The triangular plate 34 folds a plurality of overlapped webs W in the transport direction with the center in the width direction of the webs W as the center.

Here, a series of printing operations by the rotary printing press 1 will be described. First, when the web W is supplied from each paper feeding device 11 to each

printing device

13a, 13b via each infeed device 12, each

printing device

13a, 13b performs four color printing or 2 printing on each web W. Color printing is performed on both sides. Next, the plurality of webs W printed by the

respective printing devices

13a and 13b are vertically cut along the transport direction by the slitter 25 in the web pass device 14, and the travel route is changed, respectively. Overlapped in order. Then, when the plurality of webs W overlapped by the web pass device 14 are introduced into the folding machine 15, the plurality of overlapped webs W are vertically folded and then laterally cut to a predetermined length and horizontally folded. Then, after a desired signature is created, it is discharged.

Next, the web conveyance path around the slitter 25 will be described with reference to FIG. FIG. 2 is a schematic configuration diagram around the slitter of the rotary printing press according to the first embodiment. As shown in FIG. 2, the slitter 25 is provided with a first drag roller 41 provided to face the opposite side of the slitter 25 across the web W. The first drag roller 41 is a drive roller that is driven by a drive source (not shown). Further, a cutting entrance guide roller 42 is provided upstream of the slitter 25 and the first drag roller 41 in the conveyance direction of the web W, and downstream of the slitter 25 and the first drag roller 41 in the conveyance direction of the web W. Is provided with a cutting exit guide roller 43. The cutting entrance guide roller 42 and the cutting exit guide roller 43 are free rollers and function as cutting guide rollers.

Then, after the web W is wound around the cutting entrance guide roller 42, the web W is wound around the first drag roller 41 and wound around the cutting exit guide roller 43. At this time, the cutting entrance guide roller 42 is positioned on one side (the left side in the drawing) with respect to the web W, while the first drag roller 41 and the cutting exit guide roller 43 are on the other side (the right side in the drawing) with respect to the web W. Located in. Further, the winding angle of the web W with respect to the first drag roller 41 is about 90 °, and the winding angle of the web W with respect to the cutting entrance guide roller 42 is about 110 ° to 120 °. The winding angle of the web W with respect to 43 is less than 90 °.

FIG. 3 is a configuration diagram schematically illustrating the periphery of the slitter of the rotary printing press according to the first embodiment. As shown in FIG. 3, the first drag roller 41 is provided so that a part thereof overlaps (overlaps) with the slitter 25. The first drag roller 41 is a serration roller whose outer peripheral surface has a wave shape in the circumferential direction. That is, the first drag roller 41 has a crest and a trough extending in the axial direction on the outer peripheral surface, and the crest and trough are alternately arranged in the circumferential direction of the outer peripheral surface. Moreover, the 1st drag roller 41 has the groove part 45 formed over the circumferential direction in the center part of the axial direction in the outer peripheral surface. The groove 45 is formed so as to be immersed in the radially inner side of the first drag roller 41. The groove portion 45 is provided with a slitter receiving portion 46 that receives the slitter 25, and the slitter receiving portion 46 can accept a part of the slitter 25 that overlaps the first drag roller 41. For this reason, when the web W is conveyed between the first drag roller 41 and the slitter 25 in a state where the first drag roller 41 and the slitter 25 are overlapped, the conveyed web W is cut along the conveyance direction. Is done.

FIG. 4 is a cross-sectional view of an example when the cutting inlet guide roller and the cutting outlet guide roller according to the first embodiment are cut along the axis. Since the cutting entrance guide roller 42 and the cutting exit guide roller 43 have the same configuration, the description will be given focusing on the cutting entrance guide roller 42.

As shown in FIG. 4, the cutting entrance guide roller 42 is a stepped roller having a step portion 56 in the axial direction. That is, the cutting entrance guide roller 42 has a large diameter portion 57 and a small diameter portion 58 having different diameters in the axial direction, and the large diameter portion 57 and the small diameter portion 58 are continuous in the axial direction, thereby forming a stepped portion 56. Has been. The cutting entrance guide roller 42 has, for example, a plurality of large diameter portions 57 in the axial direction and a plurality of small diameter portions 58 in the axial direction. The plurality of large diameter portions 57 and the plurality of small diameter portions 58 are in the axial direction. Are alternately arranged. The cutting entrance guide roller 42 may be configured to include at least one small diameter portion 58 and a pair of large diameter portions 57 located on both sides in the axial direction of the small diameter portion 58.

For this reason, in the cutting entrance guide roller 42 configured as described above, the peripheral speed of the pair of rotating large diameter portions 57 is higher than the peripheral speed of the small diameter portion 58 between the pair of rotating large diameter portions 57. And get faster. For this reason, the cutting entrance guide roller 42 causes the web W that is in rolling contact to spread in the width direction (the axial direction of the cutting entrance guide roller 42).

Further, the cutting entrance guide roller 42 is rotatably attached to a fixed shaft 50 provided on an apparatus frame (not shown). The cutting entrance guide roller 42 includes a pair of rolling bearings 51, a pair of roller bases 52, a roller body 53, and a metal layer 54. The pair of rolling bearings 51 are constituted by ball bearings, for example, and are arranged on the fixed shaft 50 with a predetermined interval. The pair of roller bases 52 are formed in an annular shape, and the inner peripheral side thereof is connected to the outer peripheral side of each rolling bearing 51. The roller body 53 is formed in a cylindrical shape and is made of carbon fiber reinforced plastic (CFRP: Carbon Fiber Reinforced Plastics). The roller body 53 is stretched between a pair of roller bases 52. That is, the roller main body 53 is connected to the outer peripheral sides of the pair of roller bases 52 at the inner sides of both axial end portions thereof. The metal layer 54 is an aluminum layer formed using an aluminum material, and is formed in a stepped cylindrical shape corresponding to the large diameter portion 57 and the small diameter portion 58. Since the metal layer 54 is made of an aluminum material, the weight is reduced. The cutting entrance guide roller 42 is a composite material roller (clad roller) made of a composite material by fitting the roller body 53 to a metal layer 54 formed in a stepped cylindrical shape.

The cutting entrance guide roller 42 and the cutting exit guide roller 43 configured as described above can improve the accuracy of roundness by machining the outer peripheral surface thereof, that is, the metal layer 54. Moreover, the cutting | disconnection entrance guide roller 42 and the cutting | disconnection exit guide roller 43 can improve abrasion resistance because the outer peripheral surface is comprised with the metal layer 54. FIG.

Therefore, when the web W conveyed from the upstream side in the conveying direction rolls on the cutting entrance guide roller 42, the cutting entrance guide roller 42 expands the web W to be rolled in the width direction, while the slitter 25 and the first slits 25 on the downstream side are expanded. Guide to the drag roller 41. The web W transported to the slitter 25 and the first drag roller 41 is cut along the transport direction by the slitter 25 while being in rolling contact with the driven first drag roller 41, and then guided to the downstream cutting outlet guide roller 43. The When the guided web W rolls into contact with the cutting exit guide roller 43, the cutting exit guide roller 43 conveys the web W to be rolled in the width direction and conveys it downstream in the conveying direction.

As described above, according to the configuration of the first embodiment, paper dust is generated when the web W is cut by the slitter 25, and between the web W and the cutting entrance guide roller 42 and between the web W and the cutting exit guide roller 43. Even if paper dust enters between them, the cutting entrance guide roller 42 and the cutting exit guide roller 43 can be made resistant to wear because the outer periphery thereof is the metal layer 54. Further, since the outer periphery of the cutting entrance guide roller 42 and the cutting exit guide roller 43 is the metal layer 54, the cutting entrance guide roller 42 and the cutting exit guide roller 43 can be easily processed. It becomes. For this reason, the cutting entrance guide roller 42 and the cutting exit guide roller 43 can reduce the flapping of the web W being conveyed. Further, when the flapping of the web W is reduced, paper dust generated when the web W is cut by the slitter 25 enters between the web W and the cutting entrance guide roller 42 and between the web W and the cutting exit guide roller 43. Since it becomes difficult, the abrasion of the cutting entrance guide roller 42 and the cutting exit guide roller 43 due to paper dust can be further suppressed. For this reason, the service life of the cutting entrance guide roller 42 and the cutting exit guide roller 43 can be improved, and as a result, the service life of the web pass device 14 can be improved.

Further, according to the configuration of the first embodiment, the cutting inlet guide roller 42 and the cutting outlet guide roller 43 are stepped rollers, so that the peripheral speed of the rotating pair of large-diameter portions 57 is the pair of rotating large diameters. The peripheral speed of the small diameter part 58 between the parts 57 can be increased. For this reason, since the web W which is in rolling contact with the cutting entrance guide roller 42 and the cutting exit guide roller 43 spreads in the width direction, generation of wrinkles formed on the web W can be suppressed.

Further, according to the configuration of the first embodiment, the metal layer 54 is made of an aluminum layer, so that the weight of the cutting entrance guide roller 42 and the cutting exit guide roller 43 can be reduced, so that the inertia resistance can be reduced. The followability with respect to the web W conveyed can be improved.

Further, according to the configuration of the first embodiment, the cutting inlet guide roller 42 and the cutting outlet guide roller 43 can be provided to be rotatable with respect to the fixed shaft 50. For this reason, since the cutting entrance guide roller 42 and the cutting exit guide roller 43 can be rotated without rotating the fixed shaft 50, the weight can be reduced and the inertial resistance can be reduced.

In the first embodiment, the cutting entrance guide roller 42 is provided to be rotatable with respect to the fixed shaft 50. However, the present invention is not limited to this configuration, and the configuration shown in FIG. FIG. 5 is a cross-sectional view of another example when the cutting inlet guide roller and the cutting outlet guide roller according to the first embodiment are cut along the axis. In the following description, the cutting entrance guide roller 42 will be described.

As shown in FIG. 5, the cutting entrance guide roller 42 is a straight roller that is flat in the axial direction. The cutting entrance guide roller 42 is rotatably attached to a pair of rolling bearings 81 provided on an apparatus frame (not shown). The cutting entrance guide roller 42 has a pair of rotating shafts 82, a pair of roller bases 83, a roller body 84, and a metal layer 85. The pair of rotating shafts 82 are rotatably supported by the pair of rolling bearings 81. The pair of roller bases 83 are formed in a disc shape and are connected to the inner side in the axial direction of the pair of rotating shafts 82. The roller body 84 is formed in a cylindrical shape and is made of carbon fiber reinforced plastic (CFRP: Carbon Fiber Reinforced Plastics). The roller body 84 is stretched between a pair of roller bases 83. That is, the roller main body 84 is connected to the outer peripheral side of the pair of roller bases 83 at the inner sides of both axial end portions thereof. The metal layer 85 is an aluminum layer configured using an aluminum material, and is formed in a cylindrical shape.

The cutting entrance guide roller 42 thus configured can rotate the entire cutting guide roller 42 by rotating the rotary shaft 82. For this reason, when rotating the guide roller 42 for cutting, it can be set as the structure suitable for rotation by setting it as said structure.

Further, the cutting entrance guide roller 42 and the cutting exit guide roller 43 may be stepped rollers or straight rollers regardless of their configurations.

In the first embodiment, the configuration of the first drag roller 41 is not particularly limited. Similarly to the cutting entrance guide roller 42 and the cutting exit guide roller 43, a roller main body 53 made of carbon fiber reinforced plastic, and a roller It is good also as a composite material roller comprised by the metal layer 54 provided in the outer peripheral side of the main body 53. FIG. According to this configuration, the first drag roller 41 can also be configured to be resistant to wear.

Next, a rotary printing press according to the second embodiment will be described with reference to FIG. FIG. 6 is a schematic configuration diagram around a printing apparatus outlet of the rotary printing press according to the second embodiment. In the second embodiment, parts that are different from the first embodiment will be described in order to avoid duplicated descriptions, and parts that have the same configuration as the first embodiment are denoted by the same reference numerals. In the rotary printing press 1 according to the second embodiment, in addition to the configuration of the first embodiment, a guide roller provided around the outlet of the printing apparatus has the same configuration as the cutting guide roller. Hereinafter, the rotary printing press 1 according to the second embodiment will be described.

As shown in FIG. 6, the first printing exit guide roller 62 rolls on the web W after printing conveyed (discharged) from the

printing apparatuses

13 a and 13 b. A second print exit guide roller 63 is provided downstream of the first print exit guide roller 62 in the web W conveyance direction. A second drag roller 61 is provided on the downstream side of the second print exit guide roller 63 in the conveyance direction of the web W, and a second drag roller 61 is provided on the downstream side of the second drag roller 61 in the conveyance direction of the web W. A three printing exit guide roller 64 is provided. The first printing exit guide roller 62, the second printing exit guide roller 63, and the third printing exit guide roller 64 are free rollers and function as printing exit guide rollers.

Then, the web W is wound around the first printing exit guide roller 62 and then wound around the second printing exit guide roller 63. Thereafter, the web W is wound around the second drag roller 61 and then wound around the third printing exit guide roller 64. At this time, the first printing exit guide roller 62, the second printing exit guide roller 63, and the third printing exit guide roller 64 are located on one side (the lower side in the drawing) with respect to the web W, while the second drag roller 61 Is located on the other side (the upper side in the figure) with respect to the web W.

As with the first drag roller 41, the second drag roller 61 is a serration roller whose outer peripheral surface has a wave shape in the circumferential direction. Similarly to the first drag roller 41, the second drag roller 61 is a drive roller that is driven by a drive source (not shown). Further, the winding angle of the web W with respect to the second drag roller 61 is about 180 °.

The first printing exit guide roller 62 and the third printing exit guide roller 64 are stepped rollers having step portions in the axial direction, similarly to the cutting entrance guide roller 42 and the cutting exit guide roller 43. For this reason, the 1st printing exit guide roller 62 and the 3rd printing exit guide roller 64 produce the effect | action that the web W to roll-contact spreads in the width direction.

FIG. 7 is a partial cross-sectional view of an example when the second printing exit guide roller is cut along the axis. As shown in FIG. 7, the second printing exit guide roller 63 is a reverse crown roller in which the diameter at the central portion in the axial direction is smaller than the diameter at both end portions in the axial direction. Therefore, the second printing exit guide roller 63 has a large diameter at both ends in the axial direction and a small diameter at the central portion in the axial direction. It becomes faster than the peripheral speed. Therefore, the second printing exit guide roller 63 also causes an action such that the web W to be rolled is spread in the width direction (the axial direction of the second printing exit guide roller 63).

And the 1st printing exit guide roller 62, the 2nd printing exit guide roller 63, and the 3rd printing exit guide roller 64 were comprised with carbon fiber reinforced plastic like the cutting entrance guide roller 42 and the cutting exit guide roller 43. It is a composite roller composed of a roller main body 53 and a metal layer 54 provided on the outer peripheral side of the roller main body 53. The configuration of the composite material roller is the same as that of the cutting entrance guide roller 42 and the cutting exit guide roller 43, and thus the description thereof is omitted.

The first print exit guide roller 62, the second print exit guide roller 63, and the third print exit guide roller 64 configured as described above are rounded by machining the outer peripheral surface thereof, that is, the metal layer 54. The accuracy can be increased. Further, the first printing exit guide roller 62, the second printing exit guide roller 63, and the third printing exit guide roller 64 can be improved in wear resistance because their outer peripheral surfaces are formed of the metal layer 54. Further, the outer peripheral surface of the first printing exit guide roller 62, the second printing exit guide roller 63, and the third printing exit guide roller 64 is composed of the metal layer 54, thereby removing the deposits such as ink. It is possible to improve the visibility of deposits.

Accordingly, when the web W conveyed from the

printing devices

13a and 13b rolls into contact with the first printing exit guide roller 62, the first printing exit guide roller 62 expands the web W to be rolled in the width direction, while the second printing exit. Guide to the guide roller 63. When the guided web W is brought into rolling contact with the second printing exit guide roller 63, the second printing exit guide roller 63 guides the second dragging roller 61 while expanding the rolling web W in the width direction. The web W guided to the second drag roller 61 is conveyed toward the third print exit guide roller 64 on the downstream side while being in rolling contact with the driven second drag roller 61. When the guided web W is in rolling contact with the third printing exit guide roller 64, the third printing exit guide roller 64 conveys the web W that is in rolling contact in the width direction and conveys it downstream in the conveying direction.

As described above, according to the configuration of the second embodiment, the outer periphery of the first printing exit guide roller 62, the second printing exit guide roller 63, and the third printing exit guide roller 64 is the metal layer 54. Can be resistant to wear. Moreover, since the outer periphery of the first printing exit guide roller 62, the second printing exit guide roller 63, and the third printing exit guide roller 64 is the metal layer 54, the web W after printing is formed on the outer periphery. Even when a deposit such as ink adheres, the visibility of the deposit can be improved and the removability of the deposit can be improved. Accordingly, the deposits can be quickly found and easily removed, so that the first print exit guide roller 62, the second print exit guide roller 63, and the third print exit guide roller 64 are preferably maintained. Is possible.

In the second embodiment, the second printing exit guide roller 63 is a reverse crown roller. However, the configuration is not limited to this configuration, and the configuration shown in FIG. FIG. 8 is a partial cross-sectional view of another example when the second print exit guide roller is cut along the axis. As shown in FIG. 8, the second print exit guide roller 63 is a reverse crown stepped roller in which a reverse crown roller and a stepped roller are combined. That is, the second print exit guide roller 63 in FIG. 8 has a large diameter portion 91 and a small diameter portion 92 having different diameters in the axial direction, and the large diameter portion 91 and the small diameter portion 92 are continuous in the axial direction. A stepped portion 93 is formed. The second print exit guide roller 63 has a plurality of large diameter portions 91 in the axial direction and a plurality of small diameter portions 92 in the axial direction. The plurality of large diameter portions 91 and the plurality of small diameter portions 92 are in the axial direction. Are alternately arranged. The second printing exit guide roller 63 has a configuration having at least one small-diameter portion 92 and a pair of large-diameter portions 91 located on both sides in the axial direction of the small-diameter portion 92, similarly to the cutting entrance guide roller 42. That's fine. Further, the second printing exit guide roller 63 has a smaller diameter at the central portion in the axial direction than the diameter at both end portions in the axial direction. For this reason, the adjacent large diameter portion 91 is smaller in diameter than the large diameter portion 91 on the center side in the axial direction as compared with the large diameter portion 91 on the end side in the axial direction. Similarly, the adjacent small diameter portion 92 has a small diameter 92 on the center side in the axial direction as compared with the small diameter portion 92 on the end side in the axial direction.

According to this configuration, the second printing exit guide roller 63 has a large diameter at both ends in the axial direction and a small diameter at the central portion in the axial direction. It becomes faster than the peripheral speed in the center. Further, in the second printing exit guide roller 63, the peripheral speed of the rotating large-diameter portion 91 is higher than the peripheral speed of the rotating small-diameter portion 92. Therefore, since the second printing exit guide roller 63 can further widen the web W that is in rolling contact in the width direction, generation of wrinkles formed on the web W can be further suppressed.

In the second embodiment, the first printing exit guide roller 62 and the third printing exit guide roller 64 are stepped rollers, and the second printing exit guide roller 63 is a reverse crown roller. However, the present invention is not limited to this configuration. That is, the first printing exit guide roller 62, the second printing exit guide roller 63, and the third printing exit guide roller 64 are appropriately configured so as to be any one of a stepped roller, a reverse crown roller, and a reverse crown stepped roller. You may choose.

In the second embodiment, the configuration of the second drag roller 61 is not particularly limited, but the carbon fiber is similar to the first print exit guide roller 62, the second print exit guide roller 63, and the third print exit guide roller 64. It is good also as a composite material roller comprised by the roller main body 53 comprised with the reinforced plastic, and the metal layer 54 provided in the outer peripheral side of the roller main body 53. FIG. According to this configuration, the second drag roller 61 can also be configured to be resistant to wear.

Next, a rotary printing press according to Example 3 will be described with reference to FIG. FIG. 9 is a schematic configuration diagram around the compensator roller of the rotary printing press according to the third embodiment. In the third embodiment, portions that are different from the first embodiment will be described in order to avoid duplicated descriptions, and the same reference numerals will be given to portions that have the same configuration as the first embodiment. In the rotary printing press 1 according to the third embodiment, in addition to the configuration of the first embodiment, the guide roller provided around the compensator roller has the same configuration as the cutting guide roller. Hereinafter, the rotary printing press 1 according to the third embodiment will be described.

As shown in FIG. 9, the third drag roller 71 rolls on the web W conveyed from the upstream side in the conveyance direction. A compensator roller 27 is provided on the downstream side of the third drag roller 71 in the conveyance direction of the web W. The compensator roller 27 is a free roller and can be moved in a predetermined direction (for example, a horizontal direction) by a driving device (not shown).

Then, the web W is wound around the third drag roller 71 and then wound around the compensator roller 27. At this time, the third drag roller 71 is located on one side (the left side in the figure) with respect to the web W, while the compensator roller 27 is located on the other side (the right side in the figure) with respect to the web W.

As with the first drag roller 41, the third drag roller 71 is a serration roller whose outer peripheral surface has a wave shape in the circumferential direction. Similarly to the first drag roller 41, the third drag roller 71 is a drive roller that is driven by a drive source (not shown). Further, the winding angle of the web W with respect to the third drag roller 71 is about 180 °.

The compensator roller 27 is a straight cylindrical roller having a flat outer peripheral surface in the axial direction. The winding angle of the web W with respect to the compensator roller 27 is about 180 °. Similarly to the cutting entrance guide roller 42 and the cutting exit guide roller 43, the compensator roller 27 includes a roller body 50 made of carbon fiber reinforced plastic and a metal layer 54 provided on the outer peripheral side of the roller body 50. The composite roller shown in FIG. 4 is configured. The configuration of the composite material roller is the same as that of the cutting entrance guide roller 42 and the cutting exit guide roller 43, and thus the description thereof is omitted.

The compensator roller 27 configured as described above can improve the accuracy of roundness by machining the outer peripheral surface thereof, that is, the metal layer 54. Further, the compensator roller 27 can be improved in wear resistance because the outer peripheral surface thereof is constituted by the metal layer 54.

Therefore, when the web W transported from the upstream side in the transport direction is brought into contact with the third drag roller 71, the driven third drag roller 71 transports the web W toward the compensator roller 27. When the conveyed web W is brought into contact with the compensator roller 27, the compensator roller 27 guides the web W to the downstream side in the conveying direction.

As described above, according to the configuration of the third embodiment, the compensator roller 27 can be made resistant to wear because the outer periphery thereof is the metal layer 54.

In the first to third embodiments, the metal layer 54 is an aluminum layer, but is not limited to this configuration. That is, the metal layer 54 is preferably not only an aluminum layer but also a lightweight and highly rigid metal.

In Examples 1 to 3, the roller main body 50 is configured using carbon fiber reinforced plastic, but any of fiber reinforced plastics may be used. For example, examples of the fiber reinforced plastic include glass fiber reinforced plastic and aramid fiber reinforced plastic.

Also, the configuration in which the second and third embodiments are combined with the first embodiment may be adopted.

DESCRIPTION OF SYMBOLS 1 Rotating printing machine 11 Paper feeder 12

Infeed apparatus

13a, 13b Printing apparatus 14 Web pass apparatus 15 Folding machine 20 Holding arm 24 Infeed roller 25 Slitter 26 Turn bar 27 Compensator roller 41 First drag roller 42 Cutting inlet guide roller 43 Cutting outlet Guide roller 50 Fixed shaft 51 Rolling bearing 52 Roller base 53 Roller body 54 Metal layer 56 Step portion 57 Large diameter portion 58 Small diameter portion 61 Second drag roller 62 First print exit guide roller 63 Second print exit guide roller 64 Third print exit Guide roller 71 3rd drag roller W web R web

Claims

A slitter for cutting the web to be conveyed along the conveying direction;
A driving roller that is in rolling contact with the web and provided opposite the slitter across the web;
A cutting guide roller that is in rolling contact with the web and provided on at least one of the upstream side or the downstream side in the web conveyance direction with respect to the slitter and the driving roller,
The web guide device according to claim 1, wherein the cutting guide roller has a roller body made of fiber reinforced plastic and a metal layer provided on an outer peripheral side of the roller body.
The cutting guide roller includes a cutting inlet guide roller provided upstream of the slitter and the driving roller in the web conveying direction, and downstream of the slitter and the driving roller in the web conveying direction. The web conveyance device according to claim 1, further comprising a cutting exit guide roller provided on the side.
The cutting guide roller has a large-diameter portion and a small-diameter portion having different diameters in the axial direction, and a step portion is formed in the axial direction by connecting the large-diameter portion and the small-diameter portion in the axial direction. The web conveyance device according to claim 1, wherein the web conveyance device is a stepped roller.
The cutting entrance guide roller has a large-diameter portion and a small-diameter portion having different diameters in the axial direction, and a step portion is formed in the axial direction by connecting the large-diameter portion and the small-diameter portion in the axial direction. The web conveyance device according to claim 2, wherein the web conveyance device is a stepped roller.
The cutting guide roller includes a pair of rolling bearings provided at a predetermined interval on a fixed shaft extending in the axial direction, a pair of roller bases provided respectively on the outer peripheral sides of the pair of rolling bearings, 5. The roller body spanned between the pair of roller bases, and the metal layer provided on the outer peripheral side of the roller body. The web conveyance device according to item.
The cutting guide roller includes a pair of rotating shafts that are pivotally supported by a pair of rolling bearings disposed at both ends in the axial direction, and a pair of roller bases that are respectively provided inside the pair of rotating shafts in the axial direction. The roller body spanned between the pair of roller bases, and the metal layer provided on the outer peripheral side of the roller body. The web conveyance apparatus of Claim 1.
A printing exit guide roller that is in rolling contact with the web after printing;
The print exit guide roller has a roller main body made of fiber reinforced plastic and a metal layer provided on the outer peripheral side of the roller main body. The web conveyance device according to item.
The web conveyance device according to claim 7, wherein the printing exit guide roller is a reverse crown roller having a smaller diameter at a central portion in the axial direction than a diameter at both end portions in the axial direction.
The printing exit guide roller has a large diameter portion and a small diameter portion having different diameters in the axial direction, and the large diameter portion and the small diameter portion are continuous in the axial direction, whereby a step portion is formed in the axial direction. The web conveying device according to claim 7, wherein the roller is a reverse crown stepped roller having a smaller diameter at a central portion in the axial direction than a diameter at both end portions in the axial direction.
10. The web conveyance device according to claim 7, further comprising a driving roller adjacent to the printing exit guide roller.
Further comprising a compensator roller for adjusting the position of the web in the conveying direction;
The said compensator roller has the roller main body comprised with the fiber reinforced plastic, and the metal layer provided in the outer peripheral side of the said roller main body, The any one of Claim 1 thru | or 10 characterized by the above-mentioned. The web conveying apparatus as described.
The web conveyance device according to claim 11, further comprising a driving roller adjacent to the compensator roller.
The web driving apparatus according to claim 10 or 12, wherein the driving roller includes a roller main body made of fiber reinforced plastic and a metal layer provided on an outer peripheral side of the roller main body. .
14. The web conveyance device according to claim 1, wherein the metal layer is an aluminum layer.
A paper feeding device that unwinds and supplies the web from a web;
A printing device for printing on the web fed from the paper feeding device;
The web conveyance device according to any one of claims 1 to 4, which conveys the web printed by the printing device;
And a folding machine that cuts and folds the web conveyed by the web conveying device.