JPH11334957A - Rotary press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust the tone of color printed on a color printing surface by providing a guide roller group which leads an individual ribbon of a web cut by a slitter device to a carrying path of vertically different height and a switch mechanism which switches the transfer direction in the vertical direction by a turn bar device. SOLUTION: A web 7 fed after completing a prescribed printing is slit by a slitter device 9 to be provided a plurality of ribbons 8. The provided individual ribbon 8 is led to an arbitrary turn bar position 11 differed vertically via a first guide roller 10 group. The turn bar 14 of the turn bar device 11 can be moved in the lateral width direction of the web 7 so that respective ribbons 8 can be engaged with each other in a case of being guided to any height position. The advancing direction of the ribbon 8 is perpendicularly transferred to the right or left side according to a perpendicular switch mechanism 12. Then, the ribbons are led to other ribbons via a second guide roller group to be fed to a next-process folding machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary printing press provided with a movable turn bar device (turning bar device) for changing a running path of a web in a process immediately before a folding machine.

[0002]

2. Description of the Related Art FIGS. 10 (a) and 10 (b) are schematic views showing the general construction of a general rotary printing press, and FIGS. 11 and 12 are perspective views showing examples of a traveling path of a web by a conventional stationary turn bar device. is there. A general rotary printing press is shown in FIG.
As shown in (b), the paper feeding unit 1, the printing unit 2,
Drying section 3, cooling section 4, web path section 5, and folding section (folding machine)
6 and the like. In such a rotary printing press, the roll-shaped web 15 is mounted on the paper feed unit 1 and the web 7 unwound from the roll-shaped web 15 is wound.
Is subjected to predetermined printing in the process of sequentially passing through a plurality of sets of printing devices 2a to 2n arranged side by side in the printing unit 2. Thereafter, the web 7 passes through the processes of the drying unit 3 and the cooling unit 4, is divided in the width direction at the subsequent web pass unit 5, and formed into a plurality of ribbons 8. Next, after the ribbon 8 is stacked and folded in the page order via the turn bar 14, the ribbon 8 is cut in the width direction and transported to a stacker or the like (not shown).

On the other hand, the printed web 7 is slitted (vertically cut in the running direction) and transferred to a folding machine 6 as a plurality of ribbons 8. Therefore, the web path section 5 is provided with a turn bar device 16 as a means for changing the traveling path of the ribbon 8 or for turning over and stacking the ribbon 8 on its front and back surfaces. This turn bar device 16 is, for example, in newspaper printing, in addition to multi-page printing and color printing in recent years, the top surface of a multi-page newspaper, out of the double-page spread, sports surface and various other surfaces,
Since single-color or multi-color printing is performed according to the contents of editing, the necessity for installation in a rotary printing press is increasing.

In the conventional stationary turn bar device 16, as shown in FIG. 11, a multi-color printed web 7 is slitted (vertically cut) by a slitter device 9 to form two ribbons 8. Thereafter, if one ribbon 8b is superimposed on the other ribbon 8a without changing the front and back (when the front surface of one ribbon 8b and the back surface of the other ribbon 8a are superimposed), the other ribbon 8a is moved straight. The traveling direction of one ribbon 8b is changed to a right angle by the first turn bar 14a, then changed to a right angle again by the next turn bar 14a, and one ribbon 8b is transferred to the folding machine 6 while being superposed on the other ribbon 8a that is traveling straight. I am trying to do it.

A conventional stationary turn bar device 16 '
Then, as illustrated in FIG. 12, the web 7 multi-color printed on the surface is slitted (vertically cut) by the slitter 9.
Then, if the other ribbon 8b is turned over and sent out on one ribbon 8a (when the back surface of one ribbon 8a and the back surface of the other ribbon 8b are overlapped), the slitter 9 slips. The traveling direction of the other ribbon 8b is first changed to a right angle by the upper turn bar 14a, then changed to the direction of the arrow by the upper and lower rollers 17, 17 and further reversed by the lower turn bar 14b. By changing the angle to a right angle and reversing the front and back, the ribbon 8b is transferred to the folding machine 6 while being superimposed on the ribbon 8a that is traveling straight. At this time, the front surface of one ribbon 8a is multicolor printed, and the back surface of the other ribbon 8b is multicolor printed, and the ribbons 8a and 8b are sent to the folding machine 6 in an overlapping state. If a plurality of ribbons 8 printed on the front and back sides in a single color are passed between them, a printed material having a multi-page structure in which the top surface and the final surface are multicolor printed surfaces is discharged.

[0006]

However, as shown in FIGS. 11 and 12, the web path section 5 provided in the conventional rotary printing press has a limited function of the turn bar 14 for changing the traveling route. There are various problems as described above. That is, the conventional turn bar 14 has the purpose of changing the traveling path of the web 7 or reversing the front and back surfaces of the web 7, and the web 7 is provided with a plurality of ribbons 8 in the width direction. After processing, the sheets cannot be laminated in an arbitrary combination, so that it is necessary to print in consideration of the arrangement of the printing plate side to be printed according to the constituent pages of the signature sheet to be discharged. Also, when a printing plate is prepared according to the constituent pages of the signature sheet to be ejected, when there are large and small printing pattern densities, for example, when there are four-color printing and single-color printing, the high-density one is used for each part. Therefore, there is a problem that it is difficult to ensure a high overall print quality. That is, 4
In the case where color printing and single-color printing are printed on the other side of the front and back surfaces of the web 7, and in the case where four-color printing is scattered on both sides of the web, it is difficult to ensure the latter high printing quality. Therefore, when the four color planes are scattered separately, it is difficult to obtain the color tone of the printing and it is difficult to match the register.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is an object of the present invention to make it easy to adjust the tone of colors to be printed on a multicolor printing surface, to simplify registration, and to greatly improve print quality. It is an object of the present invention to provide a rotary printing press capable of improving the printing quality.

[0008]

In order to solve the problems of the prior art, according to the present invention, there is provided a slitter for continuously cutting a plurality of portions in a width direction of a web, and a slitter for cutting the web by the slitter. Guide rollers each having a surface length equal to or greater than the entire width of the web, and each ribbon of the ribbons transported to the respective transport paths at different heights in the vertical direction. A turn bar device configured to transfer the path in the right angle direction and movable in the width direction of the web, a right angle direction switching mechanism capable of switching the transfer direction in the right angle direction by the turn bar device to 90 degrees and 270 degrees, A second guide roller group for transporting each ribbon passed through the turn bar device to a folding machine.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments. Here, FIG. 1 is a side view illustrating the configuration of a web path unit (movable turn bar unit) provided in the rotary printing press according to the embodiment of the present invention, and FIG. 2 is rotary printing according to the embodiment of the present invention. Front view illustrating the configuration of a web path unit (movable turn bar unit) installed in the machine;
FIG. 3 is a functional explanatory view of the movable turn bar portion, and FIGS. 4 and 5.
6A and 6B are explanatory diagrams of a width direction moving mechanism and a right angle direction switching mechanism of the turn bar device, FIGS. 6 and 7 are explanatory diagrams of a right angle direction switching mechanism of the turn bar device, and FIGS. 8 and 9 are explanatory diagrams of a web path system.

[0010] A rotary printing press according to an embodiment of the present invention comprises:
As described in the section of the prior art, the paper feed unit 1, the printing unit 2, the drying unit 3, the cooling unit 4, the web path unit 5, the folding unit (folding machine) 6, and the like are provided, and are continuously supplied. A predetermined printing is performed on the web 7 to be formed, and then, the web 8 is slit along the traveling direction of the web 7, and the ribbons 8 formed by the slitting are stacked on each other, cut in the width direction, and cut in the width direction. It is designed to produce booklets. The present invention proposes an improvement of the web path section 5 in these series of operation steps, and the configuration will be described below.

As shown in FIGS. 1 to 9, the web path section 5 installed in the rotary printing press according to the present embodiment continuously extends at a plurality of locations along the width direction of the web 7, that is, along the traveling direction. And a plurality of ribbons 8a to 8n of the web 7 cut by the slitter device 9 are transported to transport paths at different heights in the vertical direction. A first guide roller group 10 for guiding, a turn bar device 11 configured to be able to transfer the conveying path of the ribbon 8 in the right angle direction at the respective height positions and to be movable in the horizontal width direction of the web 7; The direction is changed by the device 11 and the transfer direction is set to 90.
And 270 degrees, that is, a right-angle switching mechanism 12 capable of turning the ribbon 8 rightward or rightward in the running direction, and folding each ribbon 8 passing through the turn bar device 11. And a second group of guide rollers 13 for transporting the second guide roller 13 to the second guide roller 6.

As shown in FIG.
A plurality of slitter knives 9a are arranged at intervals in the axial direction, and the intervals are determined by dividing ribbons 8a to 8n.
Is set in accordance with the width dimension of. The first guide roller group 10 is disposed downstream of the slitter device 9 and has a surface length that can correspond to the entire width of the web before cutting by the slitter device 9. Further, the turn bar device 11
And the right-angle switching mechanism 12 includes a first guide roller 10
It is located downstream of the group.

As shown in FIG. 3, the turn bar device 11 and the right angle direction switching mechanism 12 have a number of turn bars 14 corresponding to the number of ribbons 8 to be switched in the right angle direction.
As shown in FIGS. 4 and 5, the turn bar 14 is supported by a turn bar support 23 via a pivot pin 25 so as to be freely rotatable in the horizontal direction. 4 are inclined at a predetermined angle so as to be set to the state of the solid line A or the chain line B in FIG. For this reason, mounting screws 26a and 26b
8a and 28b are rotatably supported, and the turn bar support 23 is provided with mounting receivers 27a and 27b.
That is, the solid line A indicates a state in which one end of the turn bar 14 is brought into contact with the mounting support 27a of the turn bar support 23 on the surface 29a, and is then mounted on the mounting support 27a by tightening with the mounting screw 26a. In addition, a chain line B shows a state in which one end of the turn bar 14 is similarly brought into contact with the mounting support 27b of the turn bar support 23 on the surface 29b and then tightened with the mounting screw 26b to be installed on the mounting support 27b. I have.

On the other hand, the widthwise moving mechanism of the turn bar device 11 includes a guide shaft 20, a guide rail 21, and a moving screw shaft 22 extending in a direction perpendicular to the running direction of the ribbon 8 (the width direction of the web 7). ing. The turn bar support 23 is movably fitted to the guide shaft 20 and is slidably attached to the guide rail 21 via the block 24. The turn bar support 23 is screwed to the moving screw shaft 22, and can be moved in the width direction of the web 7 by the rotation of the moving screw shaft 22. The end of the moving screw shaft 22 is fixed to the frame 32 in the axial direction and supported in the rotational direction freely. The drive motor 3 is connected to one end of the moving screw shaft 22 via a gear.
0 is connected, and the motor 30 allows the moving screw shaft 22 to rotate in both forward and reverse directions. Furthermore, a rotary encoder 31 is provided in the drive system of the moving screw shaft 22, and the rotary encoder 31 is configured to control the position of the turn bar device 11 in the width direction.

FIG. 4 shows that the turn bar 14 has a solid line A.
And the state of the chain line B can be switched by 90 degrees, whereby the running direction of the ribbon 8 can be changed by 90 degrees or 2 degrees.
It is clear that the angle can be changed to 70 degrees. However, in that case,
The turn bar 14 not only switches between the A and B states shown in FIG. 4 but also, as shown in FIGS.
3 needs to be moved in the C dimension width direction. That is,
When changing the state in which the ribbon 8 in FIG. 6 is changed in the 270 degree direction (the state of the solid line A in FIG. 4) to the state in which the ribbon 8 in FIG. 7 is changed in the 90 degree direction (the state in the chain line B in FIG. 4). Is A
In addition to changing from the state to the state B, the turn bar support 23 must be moved to the left by the dimension C.
Here, the dimension C indicates the position interval between the pivot pins 25 when the turn bar 14 is in the A and B states.

In the rotary printing press according to the embodiment of the present invention, the web 7 continuously fed after completion of the predetermined printing is slitted via the slitter device 9 and processed into a plurality of ribbons 8. When formed, these individual ribbons 8 are wound around the first guide roller group 10 and guided to the turn bar position 11 at an arbitrary different position in the vertical direction.
The turn bar 14 of the turn bar device 11 is shown in FIG.
As shown in FIGS. 5 to 5, since the web 7 can move in the width direction, it can be engaged even if any of the divided ribbons 8 is guided to any height position. Also,
The traveling direction of the ribbon 8 can be transferred at right angles to either the right side or the left side by the angle setting of the turn bar 14 and the right angle direction switching mechanism 12, so that the front and back sides of the entering ribbon 8 are left as they are or the entered ribbon 8 can be transported to the outside in a state where it is turned upside down. The ribbon 8 sent out through the turn bar device 11 is guided between the other ribbons via the corresponding second guide rollers 13 and sent to the folding machine 6 in the next process, where the ribbon 8 is fed in the width direction. And transported to a stacker (not shown).

According to the function of the web path section 5, as shown in FIG. 8, each of the ribbons 8 divided into a plurality of stripes in the width direction after printing has been completed can be set in an arbitrary direction on the front and back, and each ribbon to be laminated is provided. 8 can be arbitrarily set, that is, the order of lamination. Therefore, it is not necessary to prepare a printing plate in accordance with the constituent pages of the signature that is ejected as in the past, and for example, the number of constituent pages is four.
When combined with color printing and single color printing, it is possible to arrange printing plates so that four color pages are printed together on one side of the web 7 and single color pages are printed together on another side. Becomes For this reason, it is easy to adjust the tone of the color to be printed even on a multicolor printing surface, and registration is also simplified.

As described above, in the rotary printing press according to the embodiment of the present invention, the print quality can be greatly improved by improving the function of the web path unit 5. Further, in the rotary printing press according to the present embodiment, waste of ink supply and power are reduced as compared with the conventional rotary printing press in which multi-color printing portions are randomly arranged on both front and rear sides, and the printing cost is reduced. Labor saving of adjustment work became possible.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes may be made without departing from the gist of the present invention. What you get. For example, as shown by a dashed line in FIGS. 9 and 10B, two sets of rotary printing presses are vertically arranged side by side, or through a rotary printing press arranged side by side along a web traveling direction (not shown). (Web pass unit) to handle a plurality of webs 7
And a plurality of guide rollers 18 configured to guide each ribbon 8 passing through one set of turn bar devices 11a between each other set of turn bar devices 11b and to pass the paper. Can also be adopted. According to such a format, it is possible to further improve the versatility in the functions of the embodiment, that is, in the combination of pages.

[0020]

As described above, the rotary printing press according to the present invention comprises a slitter device for continuously cutting a plurality of portions in the width direction of a web, and an individual ribbon of the web cut by the slitter device. A first guide roller group having a surface length greater than or equal to the full width of the web, and a first guide roller group having a surface length equal to or greater than the full width of the web, and transferring the ribbon transport path in a right angle direction. A turn bar device configured to be movable in the width direction of the web, and the transfer direction in a right angle direction by the turn bar device is set to 90 degrees and 27 degrees.
Since it is provided with a right angle direction switching mechanism capable of switching to 0 degrees and a second guide roller group for transporting each ribbon passing through the turn bar device to the folding machine, it is easy to adjust the color tone to be printed on the multicolor printing surface. In addition to being able to make adjustments, registering can be easily performed, and printing quality can be greatly improved. In addition, the rotary printing press of the present invention reduces the waste of ink supply and power as compared with a conventional rotary printing press, so that printing costs can be reduced and labor for adjustment work can be saved.

[Brief description of the drawings]

FIG. 1 is a side view conceptually showing a movable turn bar device installed in a rotary printing press according to an embodiment of the present invention.

FIG. 2 is a front view conceptually showing a movable turn bar device installed in the rotary printing press according to the embodiment of the present invention.

FIG. 3 is a conceptual diagram illustrating functions of a mobile turn bar device according to an embodiment of the present invention.

FIG. 4 is a plan view showing an axial moving mechanism and a right-angle direction switching mechanism of the turn bar device according to the embodiment of the present invention.

FIG. 5 is a view taken along line XX in FIG. 4;

FIG. 6 illustrates the function of the right-angle direction switching mechanism of the turn bar device according to the embodiment of the present invention.
It is a top view showing the state of a 70-degree direction.

FIG. 7 illustrates the function of the right-angle switching mechanism of the turn bar device according to the embodiment of the present invention.
It is a top view which shows the state of a 0 degree direction.

FIGS. 8A and 8B illustrate a web path system of the mobile turn bar device according to the embodiment of the present invention, wherein FIG. 8A is a perspective view when a divided ribbon is set on the front side, and FIG. FIG. 7 is a perspective view when the set ribbon is set on the back side.

FIG. 9 is a perspective view showing a modification in which a plurality of sets of devices according to the embodiment of the present invention are provided, and showing a state in which each ribbon passing through one set of turn bar devices is guided between other turn bar devices. .

10A and 10B show the overall schematic configuration of a general rotary printing press, wherein FIG. 10A is a plan view and FIG. 10B is a front view.

FIG. 11 is a perspective view showing an example of a traveling path of a web by a conventional stationary turn bar device.

FIG. 12 is a perspective view showing an example of a running path of a web by another conventional stationary turn bar device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper feed unit 2 Printing unit 3 Drying part 4 Cooling part 5 Web path part 6 Folding part (folding machine) 7 Web 8 Ribbon 9 Slitter device 10 First guide roller 11 Turn bar device 12 Right angle direction switching mechanism 13 Second guide roller 14 Turn bar 15 Rolled web 18 Third guide roller 20 Guide shaft 21 Guide rail 22 Moving screw shaft 23 Turn bar support 25 Pivot pin 26 Mounting screw 27 Mounting cradle 28 Pin 29 Contact surface 30 Motor 31 Rotary encoder 32 Frame

Claims (2)

[Claims] 1. A slitter device for continuously cutting a plurality of portions in a width direction of a web, and each ribbon of the web cut by the slitter device is guided to a transport path at a different height position in a vertical direction, And a first guide roller group having a surface length equal to or greater than the entire width of the web, and a turn bar located at the respective heights, configured to transfer the ribbon conveyance path in a right angle direction and to be movable in the web width direction. The transfer direction in the right angle direction by the device and the turn bar device is 9
A rotary printing press, comprising: a right angle direction switching mechanism capable of switching between 0 degree and 270 degree; and a second guide roller group for transporting each ribbon passing through the turn bar device to a folding machine. 2. A plurality of units each including a plurality of slitter devices, a first guide roller group, a turn bar device, a right-angle switching mechanism, and a second guide roller group are provided corresponding to a plurality of webs. 3. The rotary printing press according to claim 1, further comprising a third guide roller that guides each ribbon passing through each of the other turn bar devices.