WO2016042647A1

WO2016042647A1 - Printing machine and printing method

Info

Publication number: WO2016042647A1
Application number: PCT/JP2014/074747
Authority: WO
Inventors: 西山　浩司; 伊藤　守
Original assignee: 三菱重工印刷紙工機械株式会社
Priority date: 2014-09-18
Filing date: 2014-09-18
Publication date: 2016-03-24
Also published as: JPWO2016042647A1; JP6388660B2

Abstract

Provided are a printing machine and a printing method, having: a paper feeding device (R) having a plurality of paper feeding units (R1-R7); a printing device (U) having a plurality of printing units (U1-U6, U11-U62); a web path device (D); and a folding device (F), the folding device (F) being provided with a first folding line (W1) for longitudinally folding, then transversely cutting at predetermined lengths and transversely folding a web (W), and with a second folding line (W2) for transversely cutting at predetermined lengths and transversely folding the web (W).

Description

Printing machine and printing method

The present invention relates to a printing machine and a printing method for printing a printed matter such as a newspaper.

For example, an offset rotary printing press for newspaper includes a paper feeding device having a plurality of paper feeding units, a printing device having a plurality of printing units, a web pass device, a folding machine having a plurality of folding units, and a paper discharging device. It consists of and. Therefore, when a web is supplied from the paper feeder to each printing unit, printing is performed on each web by each printing unit, and a plurality of web travel routes are changed by the web pass device in a predetermined order. After the overlapping, the web is vertically folded or vertically cut by a folding machine and then horizontally cut by a predetermined length, and then folded to form a fold and discharged as a printed matter (newspaper). .

In the newspaper offset rotary press configured as described above, roll paper having a width of 4 pages of newspaper is generally used. The roll paper on which printing has been performed is longitudinally cut at a middle position in the width direction by a slitter in a web pass device, and then the conveyance path is changed by a turn bar and superimposed in a predetermined order, and then sent to a folding machine. It is done. At this time, since the roll paper is vertically cut at the intermediate position in the width direction by the slitter, the widths of the left and right roll papers after the vertical cutting are the same. In recent years, there are various sizes of newspapers, and there is a demand for printing newspapers having different widths at the same time.

Such conventional rotary offset presses for newspapers are described in the following patent documents. The rotary printing machine described in Patent Document 1 is provided with a turn bar that changes the web traveling direction before introducing the web that has exited the printing section into the folding section, and a plurality of triangular plates that guide the web to the folding section, and selects the turn bar. Alternatively, by adjusting the position, webs of various widths can be freely positioned with respect to a plurality of triangular plates. In addition, a rotary press described in Patent Document 2 includes a paper feeding unit that continuously feeds paper, a printing unit that prints on paper fed from the paper feeding unit, and paper printed by the printing unit. Is provided with a folding part that forms a cloth as a printed matter, and a position adjusting mechanism that adjusts the position of a member that contacts the paper at the folding part in response to a change in the width of the paper to be used.

JP 2004-338814 A JP 2009-279791 A Japanese Utility Model Publication No.59-176847

However, since the rotary printing machine of Patent Document 1 needs to select or adjust the position of the turn bar, the rotary printing machine is arranged so that the paper feeding device, the printing unit, the web path unit, and the folding machine are orthogonal to each other. The machine itself becomes larger. Further, since the rotary machine of Patent Document 2 adjusts the position of the member that contacts the paper at the folding portion in response to the change in the width of the paper to be used, the structure of each former has a complicated driving system for the nipping roller. At the same time, when changing the width of the paper, it takes a long time to change the member. Patent Document 3 describes a folding machine provided with a path through which a web passes through a drag roller, a former, a leading roll, and a nip roll, and a path through which the web passes through a turn bar, a guide roll, and a nip roll. However, this conventional folding machine is a single-width rotary press equipped with a single triangular plate, and can produce two types of printed materials with different folding methods at the same time. It is difficult to produce a printed material on which paper is overlapped.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems, and to provide a printing machine and a printing method capable of printing a printed matter different from a normal newspaper size and simplifying the structure and improving workability. And

In order to achieve the above object, a printing machine according to the present invention includes a paper feeding device having a plurality of paper feeding units for supplying a web, and a plurality of printing units for printing on the web supplied from the paper feeding device. A printing apparatus having a web pass device that vertically conveys the printed web at a predetermined position in the width direction, and then folds the web that has been conveyed in a plurality of layers into a predetermined length. A folding machine that forms a fold, and the folding machine is configured to first fold the web to a predetermined length and then laterally fold the web to a predetermined length, and the web to a predetermined length. And a second fold line that is laterally cut and folded horizontally.

Therefore, when the web is passed through the first folding line, the web is longitudinally folded and then laterally cut to a predetermined length to be folded laterally to form a fold, while the web is turned to the second folding line. When passed, the web is cut into a predetermined length without being folded vertically, and then folded to form a fold. Therefore, by selecting the fold line according to the size of the signature to be formed, it is possible to print a printed material having a different size, and it is sufficient to add a second fold line without changing the existing equipment. The structure can be simplified and workability can be improved.

In the printing machine of the present invention, the first folding line includes a triangular plate and a lead-in roller for longitudinally folding the web, a folding cylinder and a saw cylinder for transversely cutting the web, and a pair of folding rollers for laterally folding the web. The second folding line has a turn bar for changing the web conveyance direction, a guide roller for conveying the web, the folding cylinder and the saw cylinder, and the pair of folding rollers. It is characterized by.

Therefore, it is only necessary to add a turn bar and guide rollers to the existing equipment, and a significant increase in manufacturing cost can be suppressed.

In the printing machine of the present invention, the web pass device includes a slitter that vertically cuts at a predetermined position in the width direction of the web, and the folding machine vertically folds the two types of webs that are cut vertically. It has two triangular plates.

Therefore, the printed web is not vertically cut by the slitter, or vertically cut at a predetermined position in the width direction by the slitter, and then the two types of webs are the first folding lines each having a triangular plate, or the triangular plate It is conveyed to the second fold line that is not present, and two types of printed matter having different widths can be printed at the same time.

In the printing machine of the present invention, a plurality of sets of the turn bar and the guide roller are provided according to the number of webs to be conveyed.

Accordingly, a plurality of sets of turn bars and guide rollers are provided according to the number of webs to be conveyed. Therefore, a plurality of webs are individually conveyed by a plurality of turn bars and guide rollers, and then overlapped. The web can be superimposed with high accuracy without any deviation in the conveying direction, and the quality of the signature can be improved.

In the printing machine of the present invention, a chopper folding device is disposed on the downstream side of the folding roller in the direction in which the signature is conveyed, and the chopper folding device is configured to transfer the signature that has been conveyed via the second folding line. It is characterized by vertical folding.

Therefore, by arranging the chopper folding device on the downstream side of the folding roller, even when the web is conveyed on the second folding line, the folded folded paper can be further folded vertically, You can make a newspaper of a different size.

In the printing method of the present invention, a plurality of webs on which printing has been performed are stacked and conveyed, and a first printing line is formed that is folded vertically and then horizontally cut to a predetermined length, and then folded horizontally to form a signature, A plurality of webs on which printing has been performed, and a second print line that forms a signature after transversely cutting to a predetermined length and then forming a signature, according to the form of the signature to be formed The first print line and the second print line are selectively used.

Therefore, by selecting a print line according to the size of the signature to be formed, printed materials having different sizes can be easily printed.

According to the printing machine and the printing method of the present invention, the folding machine has a first folding line that is horizontally folded to a predetermined length after the web is vertically folded, and the web is horizontally cut to a predetermined length. Since the second fold line that is folded horizontally is provided, printed products of different sizes can be printed, and the second fold line can be added without changing the existing equipment, thereby simplifying the structure. In addition, the workability can be improved.

FIG. 1 is a schematic configuration diagram illustrating a newspaper offset rotary printing press according to a first embodiment. FIG. 2 is a schematic plan view showing the vicinity of the triangular plate in the folding machine. FIG. 3 is a schematic front view showing the folding unit. FIG. 4 is a schematic diagram showing a folding cylinder and a saw cylinder. FIG. 5 is a schematic side view showing the folding unit. FIG. 6 is a schematic perspective view showing the folding unit. FIG. 7 is a schematic plan view of the vicinity of the triangular plate in the folding machine to which the second folding line is applied. FIG. 8 is a schematic perspective view of a folding unit to which the second folding line is applied. FIG. 9 is a schematic plan view of the vicinity of a triangular plate in a folding machine that represents a modified example to which the second folding line is applied. FIG. 10 is a schematic front view showing a folding unit in the newspaper offset rotary printing press according to the second embodiment. FIG. 11 is a schematic side view showing the folding unit. FIG. 12 is a schematic front view showing a folding unit in the newspaper offset rotary printing press according to the third embodiment.

Hereinafter, preferred embodiments of a printing press and a printing method according to the present invention will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by this embodiment, and when there are two or more embodiments, what comprises combining each embodiment is also included.

[First Embodiment]
FIG. 1 is a schematic configuration diagram illustrating a newspaper offset rotary printing press according to a first embodiment.

As shown in FIG. 1, the printing press according to the first embodiment is a newspaper offset rotary printing press, and includes a paper feeding device R, an infeed device I, a printing device U, a web pass device D, a folding device. Machine F. The paper feeding device R has a plurality (seven in the first embodiment) of paper feeding units R1 to R7, and the infeed device I has a plurality (seven in the first embodiment) of infeed units I1 to I7. The printing apparatus U has a plurality (six in the first embodiment) of printing units U1 to U6, and the web pass apparatus D has a plurality of (two in the first embodiment) web pass units D1. , D2 and the folding machine F has a plurality of (two in the first embodiment) folding units F1, F2.

In this case, although the two folding units F1 and F2 are arranged side by side, the operation side folding unit F1 and the driving side folding unit F2 are actually arranged side by side in a direction orthogonal to the paper surface. Furthermore, although the printing apparatus U has been described from two parts, it has been described by dividing it into two in terms of function, and in reality, it is a single apparatus.

In this web offset press for newspapers, paper feeding units R1 to R7 are installed on the first floor of a building (not shown), and infeed units I1 to I7 are installed on the second floor. The printing units U1 to U6 are installed, the web pass device D is installed from the third floor to the fifth floor, and the folding machine F is installed on the second and third floors.

In the paper feeding device R, the paper feeding units R1 to R7 have substantially the same configuration, and have a holding arm 11 that holds three webs on which a web (print medium) W is wound in a roll shape. By rotating 11, the web can be rotated to the paper feeding position. Each of the paper feeding units R1 to R7 is provided with a paper splicing device (not shown), and when the remaining web fed out at the paper feeding position becomes small, the paper splicing device uses the paper splicing device to feed the web at the paper feeding position. Thus, the web at the standby position can be spliced.

In the infeed apparatus I, the infeed units I1 to I7 have substantially the same configuration, and the web running on the printing apparatus U is adjusted by adjusting the tension of the web W fed to the printing units U1 to U6 of the printing apparatus U. The tension of W is stably maintained at an appropriate value. For example, each of the infeed units I1 to I7 has an infeed roller, a paper pressing rubber roller, a dancer roller, a guide roller, and the like. Then, the tension of the web W is made appropriate by urging the dancer roller in the tensioning direction of the web W, the peripheral speed of the infeed roller is changed according to the swing of the dancer roller, and the proper tension of the web W is maintained. ing.

The tension of the web W from the paper feeding device R to the infeed device I is performed by a brake device (not shown) provided in the paper feeding units R1 to R7, and the tension detection roller provided in the paper feeding device R is Based on the detection result, the brake device is controlled. A drag roller 12 that can be driven and rotated by a drive source is provided on the downstream side of the printing apparatus U, and the tension of the web W is adjusted by controlling the peripheral speed of the drag roller 12 and the biasing force of the dancer roller. ing.

In the printing apparatus U, the printing units U1 to U6 are multicolor printing units capable of performing double-sided four-color printing. Each of the printing units U11 to U62 has substantially the same configuration and has an ink supply device, a plate cylinder, a blanket cylinder, and the like, which will be described later. In this embodiment, each of the printing units U1 to U6 can be mounted with a printing plate corresponding to one page of a newspaper as printed matter along the circumferential direction on the printing drum, and the circumferential length (diameter) of the printing drum can be set. On the other hand, the circumference (diameter) of the blanket cylinder is set to be the same.

In the present embodiment, the printing units U1 to U6 are all configured by multi-color printing units, but are not limited to this configuration. For example, various units such as a double-sided two-color printing unit, a double-sided single-color printing unit, a single-sided four-color printing unit or a single-color printing unit may be used in combination as appropriate according to the printed matter.

In the web pass device D, the web pass unit D1 is provided for the printing units U1 to U3, and the web pass unit D2 is provided for the printing units U4 to U6. Each of the web path units D1 and D2 has substantially the same configuration, and is a slitter that cuts the web W along the longitudinal direction (the longitudinal direction of the web W, the conveyance direction of the web W) at the center in the width direction, and the longitudinal cut. A turn bar for setting the transport path of the web W, and a compensator for adjusting the transport position of the web W in the vertical direction.

That is, the webs W printed by the printing units U1 to U3 are vertically cut by the slitter in the web pass unit D1, changed by the turn bar, changed by the turn bar, and adjusted by the compensator. Are overlaid in order. Each web W printed by the printing units U4 to U6 is vertically cut by the slitter in the web pass unit D2, the conveyance path is changed by the turn bar, and the conveyance position is adjusted by the compensator. They are stacked in order.

In the folding machine F, the two folding units F1, F2 are arranged on the operation side and the drive side. That is, when a plurality of webs W are overlapped and introduced from the web pass unit D1, the folding unit F1 vertically folds the web W1, cuts it horizontally by a predetermined length, and then folds it to form a fold. The paper can be discharged as a newspaper. In addition, when a plurality of webs W are overlapped and introduced from the web pass unit D2, the folding unit F2 vertically folds the web W2, transversely cuts it at a predetermined length, and then horizontally folds to form a fold. The paper can be discharged as a newspaper. In this case, in the folding machine F, the folding units F1 and F2 not only process the webs W1 and W2 from the web path units D1 and D2, but also one of the folding units F1 and F2 can process them together. .

Accordingly, in the web offset press for newspapers, the tension of the webs W supplied from the paper feeding units R1 to R7 of the paper feeding device R is adjusted by the infeed units I1 to I7 of the infeed device I, respectively. Supplied to the printing units U1 to U6 of the printing apparatus U. Printing is performed on both sides of each web W by the printing units U1 to U6 in the printing apparatus U. Each of the webs W printed by the printing units U1 to U3 is vertically cut by a slitter in the web pass unit D1, changed by a turn bar, changed by a turn bar, and adjusted by a compensator. Are overlaid in order. Each web W printed by the printing units U4 to U6 is vertically cut by the slitter in the web pass unit D2, the conveyance path is changed by the turn bar, and the conveyance position is adjusted by the compensator. They are stacked in order.

Thereafter, in the folding machine F, when a plurality of webs W1 are overlapped and introduced from the web pass unit D1, the folding unit F1 vertically folds the web W1, cuts it horizontally at a predetermined length, and folds it horizontally. Form a compromise and eject it as a newspaper. In addition, when a plurality of webs W2 are overlapped and introduced from the web pass unit D2, the folding unit F2 vertically folds the web W2, cuts the web W2 by a predetermined length, and then horizontally folds to form a fold. The paper is discharged as a newspaper.

Here, the folding machine F and one folding unit F1 will be described in detail. 2 is a schematic plan view showing the vicinity of a triangular plate in a folding machine, FIG. 3 is a schematic front view showing a folding unit, FIG. 4 is a schematic diagram showing a folding cylinder and a saw cylinder, and FIG. 5 is a schematic showing a folding unit. 6 is a schematic perspective view showing the folding unit, FIG. 7 is a schematic plan view of the vicinity of the triangular plate in the folding machine to which the second folding line is applied, and FIG. 8 is a schematic diagram of the folding unit to which the second folding line is applied. It is a schematic perspective view.

As shown in FIG. 2, the folding machine F has two folding units F1 and F2, and the folding units F1 and F2 are arranged side by side. Each of the web pass units D1 and D2 of the web pass device D has a drag roller 13 and a slitter knife 14, and the folding units F1 and F2 cut the web W longitudinally by pressing the slitter knife 14 against the drag roller 13. A newspaper can be produced by stacking a predetermined number of webs W after longitudinal cutting, then folding the webs W longitudinally, laterally cutting the webs W to a predetermined length, and laterally folding to form a signature. It is.

In the folding unit F1, as shown in FIG. 3,

drag rollers

20 and 21 for carrying the web W stacked in a predetermined order in the web pass unit D1 described above downward are provided at the top, and the web W is A folding triangular plate 22 is provided. Below the triangular plate 22, a folding cylinder 23 for holding and conveying the web W and a saw cylinder 24 for transversely cutting the vertically folded web W to form a bundle of sheets S are arranged to face each other. A pair of lead-in rollers 25, a pair of nipping rollers 26, a guide roller 27, and a pair of nipping rollers 28 are provided between the triangular plate 22, the folding cylinder 23, and the saw cylinder 24.

As shown in FIG. 4, the folding cylinder 23 is provided with a needle device 29 so as to face the peripheral surface by 180 degrees. Each needle device 29 has substantially the same configuration, and includes a needle shaft 30 provided along the axial direction of the folding cylinder 23, a needle arm 31 whose proximal end is fixed to the needle shaft 30, and this needle. And a needle 32 fixed to the tip of the arm 31. The needle device 29 operates in conjunction with the rotation of the folding cylinder 23, and projects the needle 32 outward through the needle arm 31 at a predetermined rotational position in the folding cylinder 23, and the running direction of the web W The tip 32 of the web W can be held, and the needle 32 can be returned via the needle arm 31 at a predetermined position in the folding cylinder 23 to release the holding of the tip of the web W.

Further, the folding cylinder 23 is provided with a saw blade receiver 33 at substantially the same position as the needle device 29 so as to face the peripheral surface thereof by 180 degrees, and this saw blade receiver 33 is generally constituted by an elastic body such as rubber. Has been. On the other hand, the saw body 24 is provided with a saw blade 34 supported by a saw base 35 so as to face the peripheral surface thereof by 180 degrees. In this case, the folding cylinder 23 and the saw cylinder 24 are synchronously rotated at the same peripheral speed, and the rotation phases thereof are matched so that the saw blade 34 and the saw blade receiver 33 face each other at a constant period. Therefore, when the folding cylinder 23 and the saw cylinder 24 rotate synchronously and the saw blade 34 and the saw blade receiver 33 face each other and coincide with each other, the web W can be laterally cut by the saw blade 34 to form the sheet S. it can.

Further, the folding cylinder 23 is provided with a folding blade 36 supported by a folding shaft 37 so as to face the circumferential surface thereof by 180 degrees, and the folding blade 36 is positioned approximately 90 degrees out of phase with the needle device 29. ing. As will be described later, the folding blade 36 is configured to have a comb blade shape, and a tip portion can protrude outward from the guide plate 38. The folding blade 36 can be rotated in the reverse direction in synchronism with the folding cylinder 23 by the folding shaft 37, and the front end of the folding blade 36 from the circumferential surface of the folding cylinder 23 (guide plate 38) at a predetermined position. By projecting outward, the sheet S cut by the saw blade 34 can be peeled off from the peripheral surface of the folding cylinder 23.

The folding cylinder 23 includes two needle devices 29, a saw blade receiver 33, and a folding blade 36, and the saw cylinder 24 includes two saw blades 34. Depending on the outer diameter, one or three or more may be provided.

As shown in FIGS. 3 and 4, the folding cylinder 23 is provided with a pair of

folding rollers

39 a and 39 b on the lower side so as to be able to rotate synchronously with the folding cylinder 23, and the

folding rollers

39 a and 39 b below the folding cylinder 23. A pair of paper guides 40 are provided on both sides. The pair of

folding rollers

39a and 39b can fold the sheet S peeled off from the peripheral surface of the folding cylinder 23 by the folding blade 36 to form a crease A with a fold Aa. . At this time, the pair of paper guides 40 guide the signature A (web W).

The

folding rollers

39 a and 39 b are provided with an impeller 41 below and a discharge conveyor 42 below the impeller 41. The impeller 41 has a plurality of blades 43 in the circumferential direction, and rotates in synchronization with the

folding rollers

39a and 39b, so that the signature A formed by the pair of

folding rollers

39a and 39b is transferred to each blade 43. Can be sequentially received on the paper discharge conveyor 42.

Therefore, the web W conveyed to the folding unit F1 is conveyed by the drag roller 21 and vertically folded by the triangular plate 22, and then the folding cylinder 23 by the lead-in roller 25, the nipping roller 26, the guide roller 27, and the nipping roller 28. Sent to.

When the vertically folded web W reaches the folding cylinder 23, the needle device 29 is operated to project the needle 32 outward at a predetermined position in the folding cylinder 23, so that the leading end of the web W is pierced and held. To do. In this state, when the folding cylinder 23 continues to rotate, the web W is wound around the circumferential surface of the folding cylinder 23 and held. When the saw blade 34 and the saw blade receiver 33 face each other at a predetermined position in the folding cylinder 23, the web W is cut by the saw blade 34 to form the sheet S. Subsequently, the needle device 29 is operated to return the needle 32, so that the holding of the leading end portion of the sheet S is released, and at the same time, the folding blade 36 is rotated so that the leading end portion is outward from the circumferential surface of the folding cylinder 23. The sheet S protrudes from the peripheral surface of the folding cylinder 23.

Then, the sheet S protruding from the peripheral surface of the folding cylinder 23 is folded at the intermediate portion in the longitudinal direction and is sandwiched between the pair of

folding rollers

39a and 39b, so that the folded sheet A is formed. The signatures A formed by the

folding rollers

39a and 39b are sequentially received by the blades 43 of the impeller 41, transferred to the paper discharge conveyor 42, and discharged.

In the folding unit F1, as shown in FIGS. 2, 3, 5, 7, and 8, a turn bar 51 is provided in front of the drag roller 21, and an upper guide roller 52 and a lower part are provided on the side of the turn bar 51. A guide roller 53 is provided.

That is, the folding unit F1 in the folding machine F according to the present embodiment includes a first folding line W1 that vertically folds the web W and then horizontally cuts and folds the web W to a predetermined length. And a second folding line W2 that is cut and laterally folded.

The first folding line W1 includes a triangular plate 22 and a lead-in roller 25 that vertically fold the web W, a nipping roller 26, a guide roller 27, a nipping roller 28, and a folding cylinder 23 and a saw cylinder 24 that laterally cut the web W. And a pair of

folding rollers

39a and 39b for laterally folding the web W. On the other hand, the second folding line W2 includes a turn bar 51 that changes the conveyance direction of the web W, an upper guide roller 52 and a lower guide roller 53 that convey the web W, a nipping roller 28, and a folding cylinder that transects the web W. 23 and the saw cylinder 24, and a pair of

folding rollers

39a and 39b for laterally folding the web W.

Here, the plurality of webs W are respectively guided by the guide rollers 19, overlapped by the

drag rollers

20 and 21, and then conveyed to the first folding line W 1 or the second folding line W 2. Therefore, the turn bar 51 and the

respective guide rollers

52 and 53 can convey a plurality of stacked webs W.

Here, the folding unit F1 has been described, but as shown in FIG. 2, the folding unit F2 includes only the first folding line that is horizontally folded to a predetermined length after the web W is vertically folded. Have. That is, as the first folding line, although not all are shown, the

drag rollers

20, 21, the triangular plate 22, the lead-in roller 25, the nipping roller, the guide roller, the nipping roller, the folding cylinder and the saw cylinder, and a pair of folding And a roller. However, the folding unit F2 may be provided with two folding lines as in the folding unit F1.

Hereinafter, a sheet folding method by the folding unit F1 of the first embodiment will be described. The first fold line W1 or the second fold line W2 is selected and used according to the form of the fold A to be formed. In this case, the fold lines W1 and W2 used when the paper is threaded before printing is started. The web W is passed through to the side.

First, a case where a newspaper is printed using the first folding line W1 in the folding unit F1 will be described. As shown in FIGS. 2 to 6, after the plurality of webs W printed in the folding unit F 1 are vertically cut by the slitter 14, guided by the guide rollers 19, and overlapped by the

drag rollers

20 and 21. , Sent to the first folding line W1. A plurality of webs W are overlapped by the triangular plates 22 and then sent to the folding cylinder 23. The longitudinally folded web W is held at the tip by the needle device 29 of the folding cylinder 23 and is wound and held around the circumferential surface of the folding cylinder 23. The web W is cut into a sheet S by a saw blade 34 at a predetermined position. At the same time as the holding of the web W is released by the needle device 29, the folding blade 36 protrudes outward and is peeled off. Then, the sheet S is folded at the intermediate portion in the longitudinal direction to form a fold Aa, and is sandwiched between the pair of

folding rollers

39a and 39b, so that a fold A is formed.

Next, a case where a newspaper is printed using the second folding line W2 in the folding unit F1 will be described. As shown in FIGS. 5, 7, and 8, the plurality of webs W printed in the folding unit F 1 are not vertically cut by the slitter 14, and are guided by the guide rollers 19, respectively, by the

drag rollers

20 and 21. After being overlaid, it is fed into the second fold line W2. A plurality of stacked webs W are not vertically folded by the triangular plate 22, the conveyance direction is changed by the turn bar 51, guided by the upper guide roller 52 and the lower guide roller 53, and sent to the folding cylinder 23. The web W is held at the tip by the needle device 29 of the folding cylinder 23 and is wound around the circumferential surface of the folding cylinder 23 and held. The web W is cut into a sheet S by a saw blade 34 at a predetermined position. At the same time as the holding of the web W is released by the needle device 29, the folding blade 36 protrudes outward and is peeled off. Then, the sheet S is folded at the intermediate portion in the longitudinal direction and sandwiched between the pair of

folding rollers

39a and 39b, so that the folded sheet A is formed.

Here, the first folding line W1 and the second folding line W2 share the nipping roller 28, the folding cylinder 23, the saw cylinder 24, and the

folding rollers

39a and 39b. The width of the web W (sheet S) to be processed is different from the line W2. Therefore, the width (length in the axial direction) of the nipping roller 28, the folding cylinder 23, the saw cylinder 24, and the

folding rollers

39a, 39b is set to a length corresponding to the width of the wide web W.

The web W traveling on the first folding line W1 (see FIG. 2) and the web W traveling on the second folding line W2 (see FIG. 7) have the same center position in the width direction. That is, the traveling path of the web W conveyed along the second folding line W2 is substantially in the same position in the vertical direction as the intermediate portion of the two triangular plates 22 in which the center portion in the width direction of the web W is provided in the horizontal direction. Is set to Further, as shown in FIG. 5, the signature a that is transported along the first folding line W1 and the signature A that is transported along the second folding line W2 are the end portions of the signature (in this embodiment, the bag side). , May be on the peller side.) Is set to pass through the same position in the width direction of the signature. Therefore, the first folding line W1 and the second folding line W2 are different in the conveying line from the web path portion W1 to the triangular plate 22 and the folding machine 23, but the folding cylinder 23, the saw cylinder 24, and the impeller 41 can be used together. It has become.

In the above description, when the newspaper is printed using the second folding line W2, the web W is not vertically cut by the slitter 14, but the web W is vertically cut by the slitter 14 according to the size of the newspaper to be printed. Also good. FIG. 9 is a schematic plan view of the vicinity of a triangular plate in a folding machine that represents a modified example to which the second folding line is applied.

As shown in FIG. 9, two turn bars 54 and 55 are provided between the drag roller 13 having the slitter 14 and the drag roller 20 in the folding unit F1. Therefore, the plurality of printed webs W are vertically cut by the slitter 14, and one web W (the right web W in FIG. 9) is conveyed as it is, while the other web W (the left web in FIG. 9) is conveyed. In W), the conveyance direction is changed by the turn bar 54, and the conveyance direction is changed by the turn bar 55. Then, the other web W is guided to the conveyance path of one web W, and both are overlapped. Then, the overlapped web W is fed into the second folding line W2 by the

drag rollers

20 and 21. The plurality of webs W are not vertically folded by the triangular plate 22 as described above, but the conveyance direction is changed by the turn bar 51, guided by the upper guide roller 52 and the lower guide roller 53, and sent to the folding cylinder 23. .

In the above description, the width of the web W when printing the newspaper using the second fold line W2 is described as half the width of the web W when printing the newspaper using the first fold line W1. However, when printing a newspaper using the second fold line W2, the web W having the width described above when printing a newspaper using the first fold line W1 can be used. That is, in addition to the nipping roller 28, the folding cylinder 23, the saw cylinder 24, and the

folding rollers

39a and 39b, the width (axial length) of the turn bar 51 and the

guide rollers

52 and 53 corresponds to the width of the wide web W. The width (the length in the axial direction) of the turn bars 54 and 55 is set to a length corresponding to half the width of the web W having a large width.

As described above, in the printing press according to the first embodiment, the paper feeding device R having the plurality of paper feeding units R1 to R7, the printing device U having the plurality of printing units U1 to U6, U11 to U62, and the web A first folding line W1 that includes a pass device D and a folding machine F, in which the web W is vertically folded and then horizontally folded to a predetermined length, and the web W has a predetermined length. A second fold line W2 that is horizontally cut and then folded is provided.

Accordingly, when the web W is passed through the first fold line W1, the web W is vertically folded and then laterally cut to a predetermined length to be folded horizontally to form a fold A. When passing through the second fold line W2, the web W is cut into a predetermined length without being folded vertically, and folded into a predetermined length, whereby a fold A is formed. Therefore, by selecting the folding lines W1 and W2 according to the size of the signature A to be formed, it is possible to print a printed matter different from the size of a normal newspaper, and the second without changing the existing equipment. What is necessary is just to add the fold line W2, and while being able to simplify a structure, workability | operativity can be improved.

In the printing machine according to the first embodiment, the first folding line W1 includes a triangular plate 22 and a lead-in roller 25 for longitudinally folding the web W, a folding cylinder 23 and a saw cylinder 24 for laterally cutting the web W, and a horizontal web W. The second folding line W2 has a pair of

folding rollers

39a and 39b for folding, a turn bar 51 for changing the conveyance direction of the web W, guide

rollers

52 and 53 for conveying the web W, a folding cylinder 23 and a saw. It has a barrel 24 and a pair of

folding rollers

39a, 39b. Therefore, the turn bar 51 and the

guide rollers

52 and 53 may be added to the existing equipment, and a significant increase in manufacturing cost can be suppressed.

In the printing machine according to the first embodiment, the web pass device D has a slitter knife 14 that vertically cuts at a predetermined position in the width direction of the web W, and the folding machine F uses two types of webs W that have been cut vertically. Each has two triangular plates 22 that are vertically folded. Therefore, the printed web W is longitudinally cut at a predetermined position in the width direction by the slitter knife 14, and thereafter, the two types of webs W are each a first folding line W1 having a triangular plate 22 or no triangular plate 22 is present. It is conveyed to the second folding line W2, and two types of printed matter having different widths can be printed at the same time.

In the printing method according to the first embodiment, a plurality of printed webs W are stacked and conveyed, vertically folded and horizontally cut to a predetermined length, and then horizontally folded to fold A. A first printing line (first folding line W1) to be formed and a plurality of printed webs W are stacked and conveyed, cut into a predetermined length, and then folded horizontally to form a signature A. Two printing lines (second folding line W2) are provided, and the first printing line and the second printing line are selectively used according to the form of the signature A to be formed. Therefore, by selecting a print line (fold lines W1, W2) according to the size of the signature A to be formed, a printed matter different from the size of a normal newspaper can be easily printed.

[Second Embodiment]
FIG. 10 is a schematic front view showing a folding unit in the newspaper offset rotary printing press according to the second embodiment, and FIG. 11 is a schematic side view showing the folding unit. In addition, the same code | symbol is attached | subjected to the member which has the same function as embodiment mentioned above, and detailed description is abbreviate | omitted.

In the second embodiment, as shown in FIGS. 10 and 11, the folding unit F 1 includes a first folding line W 1 that horizontally folds the web W into a predetermined length and then folds the web W. And a second fold line W2 that is horizontally cut to a predetermined length and folded horizontally.

folding rollers

39a and 39b for laterally folding the web W. On the other hand, the second folding line W2 includes a turn bar 51 (51a, 51b, 51c, 51d, 51e) that changes the conveyance direction of the web W, and

upper guide rollers

52a, 52b, 52c, 52d, 52e that convey the web W, and

Lower guide rollers

53a, 53b, 53c, 53d, and 53e, a nipping roller 28, a folding cylinder 23 and a saw cylinder 24 for transversely cutting the web W, and a pair of

folding rollers

39a and 39b for laterally folding the web W is doing.

Here, the turn bars 51a, 51b, 51c, 51d, and 51e, the

upper guide rollers

52a, 52b, 52c, 52d, and 52e and the

lower guide rollers

53a, 53b, 53c, 53d, and 53e correspond to the number of webs W to be conveyed. Multiple sets are provided. Therefore, the turn bars 51a, 51b, 51c, 51d, and 51e, the

upper guide rollers

52a, 52b, 52c, 52d, and 52e, and the

lower guide rollers

53a, 53b, 53c, 53d, and 53e can individually transport a plurality of webs W. It has become.

That is, the plurality of webs W are respectively guided by the guide rollers 19 and then conveyed to the first folding line W1 or the second folding line W2. At this time, the conveyance path | route of the web W in the 1st folding line W1 is the same as that of 1st Embodiment. The transport path of the web W in the second fold line W2 is the turn bars 51a, 51b, 51c, 51d, 51e, the

upper guide rollers

52a, 52b, 52c, 52d, 52e, the

lower guide rollers

53a, 53b, 53c, 53d, 53e. The nipping roller 28, the folding cylinder 23 and the saw cylinder 24, and the

folding rollers

39a and 39b.

Therefore, when the newspaper is printed using the second folding line W2 in the folding unit F1, the plurality of printed webs W are guided by the guide rollers 19 and then turned to the turn bars 51a, 51b, 51c, The conveying direction is individually changed by 51d, 51e, guided by the

upper guide rollers

52a, 52b, 52c, 52d, 52e and the

lower guide rollers

53a, 53b, 53c, 53d, 53e, and overlapped by the nipping roller 28. Then, the sheet S is cut horizontally by the folding cylinder 23 and the saw blade 24 and sandwiched by the pair of

folding rollers

39a and 39b to be folded horizontally to form a signature A.

As described above, in the printing press according to the second embodiment, the folding machine F includes the first folding line W1 for longitudinally folding the web W and then transversely cutting the web W to a predetermined length, and then folding the web W to a predetermined length. A second fold line W2 that is horizontally cut and horizontally folded is provided. As the second fold line W2, the turn bars 51a, 51b, 51c, 51d, 51e and the

upper guide rollers

52a, 52b, 52c, 52d, 52e are provided. And a plurality of

lower guide rollers

53a, 53b, 53c, 53d, and 53e.

In the second fold line W2, the plurality of webs W are individually changed in conveying direction by the

respective turn bars

51a, 51b, 51c, 51d, 51e, and the

upper guide rollers

52a, 52b, 52c, 52d, 52e and the lower The

guide rollers

53 a, 53 b, 53 c, 53 d, 53 e are individually guided and overlapped by the nipping roller 28. The plurality of webs W are individually conveyed and overlapped immediately before being cut horizontally, so that the plurality of webs W can be overlapped with high accuracy without shifting in the conveyance direction, and the quality of the signature A is improved. be able to.

[Third Embodiment]
FIG. 12 is a schematic front view showing a folding unit in the newspaper offset rotary printing press according to the third embodiment. In addition, the same code | symbol is attached | subjected to the member which has the same function as embodiment mentioned above, and detailed description is abbreviate | omitted.

In the third embodiment, as shown in FIG. 12, in the folding machine F, a chopper folding device 60 is arranged on the downstream side of the

folding rollers

39a and 39b in the conveying direction of the signature A.

In the chopper folding device 60, a chopper table 61 is disposed horizontally, and an upper transport conveyor 62 and a lower transport conveyor 63 are disposed above the chopper table 61. Each of the

conveyors

62 and 63 has an endless conveyor belt, a plurality of guide rollers, and a driving roller. The

conveyors

62 and 63 hold the signature N released from the casing cylinder 45 from above and below and convey it to a predetermined position on the chopper table 61. can do.

The chopper table 61 has a slit 64 formed at a predetermined position thereof, and a stopper 65 is provided adjacent to the downstream side in the conveyance direction of the signature N from the slit 64. This stopper 65 prescribes | regulates the chopper folding position, when the front-end | tip part of the signature N conveyed by the

conveyance conveyors

62 and 63 contact | abuts. Above the slit 64, there is disposed a chopper blade 66 that contacts the central portion of the signature N in contact with the stopper 65 and pushes it into the slit 64. The chopper blade 66 is moved in the vertical direction by a driving device (not shown). It can move along.

A pair of folding rollers 67 are rotatably provided below the chopper table 61 so as to face the lower side of the slit 64 and fold the fold N lowered from the slit 64 by nip pressure.

The signature A processed in the second folding line W2 is not vertically folded because it does not pass through the triangular plate 22. Therefore, the signature A conveyed by the paper discharge conveyor 42 is vertically folded by the chopper folding device 60. Therefore, even when the second folding line W2 is selected, a broad version of the newspaper is produced by vertically folding the signature A after being folded horizontally by the

folding rollers

39a and 39b with the chopper folding device 60. It becomes possible. In this case, as long as the width of the folding cylinder 24 (the length in the axial direction) is within an allowable range, it is possible to produce an arbitrary broad version of a newspaper different from the normal newspaper size, and increase the size variation. It is possible to easily cope with changes in newspaper size.

As described above, in the printing machine according to the third embodiment, the chopper folding device 60 is arranged on the downstream side in the conveyance direction of the signature A in the

folding rollers

39a and 39b, and the chopper folding device 60 sets the second folding line W2. The eclectic A conveyed via is vertically folded. Even when the web W is conveyed along the second folding line W2, the folded fold A can be further vertically folded, and a newspaper having a size different from the normal newspaper size can be produced.

R paper feeding device R1 to R7 paper feeding unit I infeed device I1 to I7 infeed unit U printing device U1 to U6, U11 to U62 printing unit D web pass device D1, D2 web pass unit F folding machine F1,

F2 folding unit

12, 13 Drag roller 14

Slitter knife

20, 21 Drag roller 22 Triangle plate 23 Folding cylinder 24 Saw cylinder 25 Lead-in roller 26 Nipping roller 27 Guide roller 28

Nipping roller

39a, 39b Folding roller 41 Impeller 42

Discharge conveyor

51, 51a, 51b, 51c, 51d, 51e, 54, 55

Turn bar

52, 52a, 52b, 52c, 52d, 52e

Upper guide roller

53, 53a, 53b, 53c, 53d, 53e Lower guide roller 60 Chopper device W Web W1 First Fold line W2 second folding line S Sheet A folded sheet

Claims

A paper feeding device having a plurality of paper feeding units for supplying a web;
A printing apparatus having a plurality of printing units for printing on the web supplied from the paper feeding apparatus;
A web pass device that conveys a plurality of the webs that have already been printed in a vertical direction at a predetermined position in the width direction;
A folding machine that forms a signature by cutting the web conveyed in a plurality of layers into a predetermined length;
Have
The folding machine
A first fold line that folds the web in a longitudinal direction and then folds and folds to a predetermined length;
A second fold line for transversely cutting the web into a predetermined length,
Having
A printing machine characterized by that.
The first folding line includes a triangular plate and a lead-in roller for longitudinally folding the web, a folding cylinder and a saw cylinder for transversely cutting the web, and a pair of folding rollers for laterally folding the web. The two-fold line includes a turn bar that changes a conveyance direction of the web, a guide roller that conveys the web, the folding cylinder and the saw cylinder, and the pair of folding rollers. The printing machine described in.
The web pass device has a slitter that vertically cuts at a predetermined position in the width direction of the web, and the folding machine has two triangular plates that vertically fold each of the two types of the vertically cut webs. The printing press according to claim 2.
The printing machine according to claim 2, wherein a plurality of sets of the turn bar and the guide roller are provided according to the number of the webs to be conveyed.
A chopper folding device is disposed downstream of the folding roller in the folding direction of the signature, and the chopper folding device vertically folds the signature that has been conveyed via the second folding line. The printing press according to any one of claims 2 to 4.
A plurality of printed webs stacked and conveyed, vertically folded and horizontally cut to a predetermined length, and then horizontally folded to form a signature;
A plurality of webs on which printing has been performed, and a second print line that forms a signature by transversely folding the web to a predetermined length and then folding the web;
Selectively using the first print line and the second print line according to the form of the signature to be formed;
A printing method characterized by the above.