JPH04908B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a folding machine that cuts and folds a web printed on a web rotary printing machine into predetermined dimensions.

[Prior art]

Rolling paper rotary printing machines have traditionally been used to print single-color printed materials such as newspapers at high speed, but recent advances in printing technology have made it possible to produce high-quality printed materials even when printing in multiple colors. Therefore, by combining the number and width of the webs fed to the origami section of the folding machine, the cutting at the origami section, the origami method, etc., one printing machine can handle many types of printed matter with different sizes and page lengths. has become necessary.

One type of printing machine used is a two-web type printing machine, in which a multi-color printing web printed by a printing unit and a one-color or two-color printing unit are dried and cooled, and then combined in a folding machine and then cut. For folding paper, not only can a large number of pages be printed in one go, or the collation process can be omitted to improve efficiency, but also the folding machine outputs a large number of pages. Since it can be used as a flyer or as a pamphlet after being cut, it is possible to handle this type of printed matter with extremely high efficiency.

Figures 1 and 2 show paper threading diagrams in the folding machine of this type of conventional two-web type printing machine. The paper threading diagrams for each case are shown. In FIG. 1, a web 1 printed in multiple colors and dried and cooled passes through a guide roller 2, a drag roller 3, a guide roller 4, and then a drag roller 5.
A compensator roller 6 is provided between the guide roller 2 and drag roller 3 to adjust the cutting position in the origami section. Also,
The web 7 that has been printed in one or two colors and dried naturally is moved between guide rollers 8 and 9 and drag rollers 10.
After passing through the web 1 and being drawn out by the drag roller 5, it is folded in half in the width direction by a triangular plate-shaped former 11, and guided to an origami cylinder 12 for origami.

Further, in FIG. 2, the web 13 printed in multiple colors is guided to the drag roller 14 via the guide roller 2, compensator roller 6, drag roller 3, and guide roller 4, and is cut in half in the width direction by a slitter 15. One half-cut web 16
is pulled out by the drag roller 5 via the compensator roller 17, changed in direction by being attached to one side inclined edge of the former 11, and then guided to the origami cylinder 12 and origami. Further, the other half-cut web 18 is changed in direction by a guide roller 19 and a turn bar 20 inclined at 45°, and then placed on the origami cylinder 1.
2 to be led to origami.

However, in such a conventional two-web and two-row output machine, in addition to the drag roller 5 that merges and pulls out the two webs, there are drag rollers 3 and 10 that pull out each web separately.
and the drag roller 14 to which the slitter 15 is attached when the two rows are taken out, a total of four drag rollers are absolutely necessary, which has the disadvantage that the structure is complicated and the space occupied in the paper input section becomes large.

[Summary of the invention]

The present invention has been made in view of the above points, and includes a second drag roller and a third drag roller diagonally above the first drag roller on the downstream side and at approximately the same height on the downstream side.
A compensator roller is disposed within the triangle formed by these drag rollers, and web deflection means are provided downstream of the second and third drag rollers, so that when one web is produced, the first drag roller The two rows of webs cut in half by the slitter attached to the web are pulled out by the second and third drag rollers and guided to the deflection means, and when two webs are produced, the upper web is cut in half by the slitter attached to the third web at a sufficiently smaller angle than the lower web. By attaching it to the drag rollers and guiding it to the direction changing means in two stacks, it is possible to input paper with stable tension using the minimum number of drag rollers when unloading two rows of two webs and one web. The present invention provides a folding machine for a rolled paper rotary printing press. Embodiments of the present invention will be described in detail below with reference to the drawings.

〔Example〕

3 and 4 show an embodiment of the folding machine according to the present invention, FIG. 3 is a schematic side view of the folding machine that performs paper threading for two webs, and FIG. FIG. 3 is a schematic side view of the folding machine that threads the paper during the folding process.
In the figure, the folding machine 30 is equipped with a pair of left and right frames 31 formed in a frame shape, and between the front ends on the upstream side in the paper input direction is a first drag roller 32 that is driven and rotated from the driving side. is frame 3
It is located on top of 1 and is mounted on a shaft. This first drag roller 32 is a roller to which a lower web 33 printed in multiple colors and dried and cooled is attached and pulled out by a predetermined amount in the case of two webs as shown in FIG. Guide roller 34~
38 are arranged. Further, in the single-web double-row feeder shown in FIG. 4, a wide web 39 that has been dried and cooled after printing is changed in direction by guide rollers 34 to 38 and then attached to a first drag roller 32. A second drag roller 40 that is rotated by being driven from the driving side is mounted diagonally above the first drag roller 32 on the downstream side, and is mounted on a shaft between the left and right frames 31. A web 41 is attached. Furthermore, the first
A disc-shaped slitter 43 supported by a swingable arm 42 is removably engaged in an annular groove formed in the widthwise center of the drag roller 32. This sliver 44
is engaged in the annular groove, and the web 39 is cut in half in the width direction. Further, when there are two webs, the slitter 43 or the arm 42 swings to separate from the drag roller 32. The second drag roller 40 is used to cut two sheets in half with a slitter 43 when one web is produced in two rows.
The upper web 39A of the webs in the row is attached. The reference numeral 44 is a third drag roller which is mounted on the downstream side of the first drag roller 32 and at approximately the same height between the left and right frames 31, and when two webs are used, the upper web 41 and the lower The two webs 33 are merged and spliced, and when two rows of one web are taken out, the two are cut in half by the slitter 43.
The remaining web 39B of the rows of webs that has been guided to the second drag roller 40 is attached and pulled out. 3 drag crawlers 32, 40,
A compensator roller 46 supported by a swingable arm 45 is disposed in a triangle connecting the axes of the arms 44 and 46. When two webs are formed, the web 41 is attached and the swing of the arm 45 moves the web 41. Adjust the phase, and when delivering 1 web in 2 rows, web 39
A is attached and the web 3 is moved by swinging the arm 45.
It is configured to adjust the phase of 9A. Below the third drag roller 44, a former 47 formed in the shape of an inverted triangular plate is supported by the frame 31 side and hangs diagonally downward, and when two webs are formed, two webs 41 and 33 are attached to both ends. It is configured so that it can be folded in half in the width direction by being attached and pulled out downward. Further, when two rows of one web are put out, one of the webs 39 cut in half is pulled out downwardly attached to one edge of the former 47, thereby changing the direction of the web 39B. Furthermore, on the downstream side of the second drag roller 40 and at approximately the same height as this, a guide roller 48 for turning the web 39 by 180 degrees is supported by the frame 31 side and is mounted on a shaft at the rear end of the frame 31. Also, on the upstream side of the guide roller 48, a turn bar 49 for changing the direction of the web 39A changed by the guide roller 48 in a right angle direction is inclined at 45 degrees in the horizontal plane and is attached to the frame 3.
It is supported on one side and mounted on an axis. 50 is a guide roller that guides the web 39A coming out of the turn bar 49; 51 is the web 33, 41, 39A, 39;
This is a group of origami cylinders for cutting and origami B into predetermined lengths in the length direction. The position of the second drag roller 40 is such that the web 41 heading towards the former 47 is placed at a small angle of 10° to 15°.
It is set to be attached to. Since the other web 33 faces the drug roller 44 in a horizontal state, it is attached to the drug roller 44 at a larger angle than the web 41.

The operation of the folding machine 30 configured as above will be explained. First, in the case of two webs shown in FIG. 3, a web 33 printed in multiple colors and then dried and cooled is guided to a folding machine 30, passes through guide rollers 34 to 38, and is pulled out by a first drag roller 32. In this case, the slitter 43 is spaced apart from the drag roller 32, and the web 33 is guided horizontally to the third drag roller 44. On the other hand, the web 41 that has been printed in a single color and air-dried is adjusted in relative phase with the web 33 by the movement of the compensator roller 46, and then pulled out by the second drag roller 40, guided to the drag roller 44, and then the web 3
Merges with 3. Two-layered web 33, 4
1 is pulled out downward while attached to both edges of the former 47, folded in half in the width direction, cut and origized into predetermined dimensions in the length direction by the origami cylinder group 51, and discharged. Furthermore, depending on the specification of the signature, the origami cylinder group 51 is
After being folded in a direction perpendicular to the direction of folding, the paper is discharged.

Next, when two rows of one web are put out as shown in FIG. 4, the web 3 that has been printed in multiple colors and then dried and cooled
9 is pulled out by the first drug roller 32 via guide rollers 34 to 38, but at this time, the slitter 43 is engaged with the annular groove of the drag roller 32 by the swinging of the arm 42, so that the web 39
is cut in half in the width direction. One web 39A of the two rows of webs cut in half is adjusted in its relative position with the other web 39B by a compensator roller 46, then pulled out by a drag roller 40, guided to a guide roller 48, and rotated by 180°. Directed. Since a turn bar 49 is mounted on the shaft at an angle of 45 degrees, the web 39A is deflected by 90 degrees and guided to the origami cylinder group 51 via the guide rollers 50. The other web 39B cut in half by the slitter 46 is pulled out by the third drag roller 44, and directed downward while adhering to one edge of the former 47, and is guided to the origami cylinder group. The two rows of webs 39A and 39B fed into the origami cylinder group 51 in this manner are cut and folded into predetermined dimensions in the length direction by the origami cylinder group 51, and then discharged. Further, depending on the specifications of the signature, the signature is folded by a chopper device (not shown) in a direction perpendicular to the folding direction by the origami cylinder group 51, and then discharged.

In this way, three drug rollers 32, 40,
44, webs 33, 41, 39, 39A, 39B at the time of two webs and when two rows of one web are output
is drawn out, and phase adjustment is performed between the webs 33 and 41 and between the webs 39A and 39B by the compensator roller 46.
In the case of two webs, the attachment angle of the web 33 to the third drag roller 44 is 80°.
The attachment angle of the web 41 is
Since it is extremely small at 10 to 15 degrees, both webs 33,
Even if there is a circumferential speed difference due to the difference in the joining radius of the web 41, it is absorbed by the web 41 slightly slipping on the web 33 by this circumferential speed difference. This amount of slippage is equivalent to the paper thickness of the attachment angle of the web 41 to the drag roller 44, and is extremely small and can be ignored.

In this embodiment, an example is shown in which a turn bar 49 is used as a means for changing the direction of one web 39A when two rows of one web are put out, but as shown in FIG.
4A and a former 47A are provided, and the guide roller 4
The web 39A coming out from the web 8 may be changed in direction by the former 47A. In this case, as in the case where the turn bar 49 is used, the patterns 52 and 52A come out on the same side, and the cuts made by the slitter 43 face each other on the inside. Furthermore, as shown in FIG.
7A may be oriented in the same direction, but in this case, the pattern 52 and the pattern 52A are on opposite sides, and the slit 4
Since the cut line 6 is on the same side of the web 39A and the web 39B, it is necessary to adjust it during imposition during printing.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in a folding machine of a web rotary printing press, a second drag roller and a third drag roller are disposed diagonally above the first drag roller on the downstream side and at approximately the same height on the downstream side. A compensator roller is arranged within the triangle formed by these drag rollers, and web deflection means are provided downstream of the second and third drag rollers, so that when one web is processed, the first
The two rows of webs cut in half by the slitters attached to the drag roller are pulled out by the second and third drag rollers and guided to the direction changing means.
When webping, the upper web is attached to the third drag roller at a sufficiently smaller angle than the lower web and guided to the direction changing means in two layers, thereby reducing the number of drug rollers and the accompanying Since the number of guide rollers etc. can be reduced compared to conventional ones, the structure is simplified and the space occupied in the paper input section is reduced, reducing costs. It can accommodate various folding specifications, and in all cases, the web tension balance is good and there is no difference in the amount of pull-out by the drag roller between the two webs, resulting in a marked improvement in folding accuracy.

[Brief explanation of drawings]

Figures 1 and 2 show paper threading diagrams of a conventional folding machine for a web-fed rotary printing press. Figures 3 to 6 show an embodiment of the folding machine of the rolled paper rotary printing press according to the present invention, and Figure 3 is a schematic side view of the folding machine that performs paper threading at the time of two webs. , FIG. 4 is a schematic side view of a folding machine that performs paper threading when two rows of one web are output, and FIGS. 5 and 6 are paper threading diagrams of folding machines showing other embodiments of the present invention, respectively. It is. 30... Folding machine, 32... First drug roller, 33, 41, 39, 39A, 39B... Web, 40... Second drug roller, 43... Slitter, 44... Third drug roller, 46...
...Compensator roller, 47, 47A...Former, 49...Turn bar.

Claims (1)

[Claims] 1. A first drag roller that attaches this web when one web is formed and a lower web when it is two webs, a slitter that is removably attached to the center of this drag roller, and a downstream of the first drag roller. A second drag roller located diagonally above the side and attaches one of the webs cut in half by the slitter when producing one web, and attaches the upper web when producing two webs, and a second drag roller on the downstream side of the first drag roller at approximately the same height. a third drag roller that attaches the other web cut in half by a sliver when producing one web and superimposes these webs when producing two webs; and a downstream side of the second drag roller and the third drag roller. and a compensator roller for adjusting the phase of the web disposed within a range connecting the axes of the three drag rollers, The web rotary printing is characterized in that the position of the second drag roller is set so that the angle of attachment of one web to the third drag roller is sufficiently smaller than the angle of attachment of the other web when two webs are being processed. Folding machine.