EP1106555B1 - Apparatus for guiding material webs in rotary printing presses - Google Patents

Abstract

The device can guide material webs via a direction-turning rod deck (12) with a folding section, these webs being in different planes. The material webs run into folding apparatus. There are running-in elements (7) on the longitudinal folding devices (8, 9). These elements have guide sectors (13, 14) which can be driven independently of each other.

Description

The invention relates to a device for guiding material webs in rotary printing machines, in particular those rotations in which runs with different run lengths can be produced.

DE 195 39 693 A1 relates to a device for stripping superimposed webs in a rotary printing machine. In this prior art configuration, a peel roll is provided between a printing unit and a folder; this is driven and rotated at a peripheral speed which is higher than that of a pressure cylinder. There are provided a plurality of pressing rollers which are engageable and disengageable with the edge portions at both ends of a plurality of printing sheets superimposed and laid around the outer peripheral surface of the peeling roller. The pressing rollers are rotatable and provided at both ends along the outer circumferential surface of the peeling roller. Further, a pressing device is provided for pressing the pressing rollers on the edge portions at both ends of the pressure paths that are laid around the outer peripheral surface of the peeling roller. The plurality of printing sheets supplied from the printing unit superimposed and guided around the outer peripheral surface of the peeling roll are respectively pressed at their edge portions at both ends to the outer peripheral surface of the peeling roller by a plurality of pressing paths and peeled off by driving and rotating the peeling roller finally arrive in the Falzeinrichung.

DE 41 28 797 A1 relates to a paper web guide in web-fed rotary printing machines. In a paper web guide for web-fed rotary printing presses with six plate-width printing cylinders, the task is to create a great deal of flexibility in the variation of the paper web strands or sections with a low outlay on equipment. 6 formers are arranged for the paper web strands in three levels. This allows a greater variability of the Mixing and merging of individual sections achieve what increases the production flexibility, for example, in a newspaper rotation considerably. JP 5-27402-U relates to a folding device for rotary printing machines. Folders downstream of rotary presses include a plurality of fold sections. There are two internal folding units provided, with two formers are arranged in pairs; two funnels are provided in an upper level, two more in a lower level; two outer folding units are arranged on both sides of the turning bar superstructure at the level of the inner two folding units, leaving a small clearance between them. Furthermore, a tension roller is provided, which cooperates with a longitudinal cutting blade, which longitudinally cuts a material web fed to the inner folding units. There are two turnstile decks provided so that the path of the two longitudinally cut web halves can be reversed.

DE 32 37 504 C2 relates to a paper web for web-fed rotary printing presses. There is provided a paper web guide in a web-fed rotary printing machine with a number of paper web guide rollers between printing units and hoppers of a folder. At least two funnels are arranged side by side in a common horizontal plane, with at least one longitudinal cutting device for separating a paper web into one remainder and one part web per paper web. On the same level and right next to the other formers an additional, beyond the maximum paper web width beyond folding hopper is provided. The paper web guide rollers in front of a hopper inlet roller are formed at least one quarter longer than a maximum width of a printable in the printing couples paper webs corresponds. Per roll of paper two turning bars are provided, one of which is arranged transversely to the paper web running direction displaceable. JP 11 180 638 A relates to a traction device for material webs in rotary printing machines. Above a draw roller 3, a driven pressure roller is provided. The pressure roller comprises a hollow disk-shaped body whose outer surface is elastic. The pressing force on the material to be transported by the pressure roller material web is adjusted by pressurizing the cavity of the disc-shaped body. The pressure roller is driven by means of a belt drive and serves to improve the transport of a material web, in particular a multilayer material web through a web-processing rotary printing press.

JP 57 151 565 A discloses that hopper plates of a former of a longitudinal folding device can be moved to the right or to the left between the side walls of a turning bar superstructure. There are provided independently of the funnel inlet plates movable funnel inlet rollers which are mounted in the side walls of the turner bar superstructure.

For newspapers, several issues are printed on rotary presses. The issues are made in larger or smaller editions, depending on whether intended for larger or smaller delivery districts. Therefore, it is necessary to use several different rotations to print the pad one after the other.

The production of a single edition only on a rotary printing press and in intervals one after the other leads to a longer production time of the entire edition. If the decision has been made to print an edition on two rotations, then inevitably large investment heights, which concern the second printing press connected.

Based on the outlined solutions of the prior art, the invention has for its object to produce on a double-wide rotation pads of different lengths independently.

According to the invention the object is achieved by the features of claim 1.

The advantages associated with the solution according to the invention are manifold. The subdivision of the rotating guide element in independently operable guide portions allows continuous operation of a roller rotation for producing a large edition; On the other hand, regardless of the pressure of the large edition can be produced a smaller number of copies, which can be performed on one of the independent guide sections, without affecting the pressure of the high circulation. Thus, an independent simultaneous production of different lengths - on a double-width newspaper rotation - possible. The high circulation can be printed, while the lower edition is already finished printed and on the remaining now free guide section, another print job can be prepared. In newspaper and commercial rotation, the editions usually contain identical sections and differ only in inserts or local parts. These can be printed simultaneously in shorter runs independently of a longer print job on one and the same rotation at the same time.

According to the invention, the guide element is designed as a funnel inlet roller and above a former, one or more formers are arranged. Each of the two guide sections, a separate drive can be assigned, the drives can be controlled independently.

The one continuous, rotating surface forming funnel inlet roller surfaces are rotatable relative to each other and may for example be connected to each other via a freewheel which allows both a common rotation of both guide roller sections, as well as a separate rotation of the guide roller sections with respect to each other. Storage of the funnel inlet roller which requires as little space as possible is achieved in that one of the guide roller sections serves in each case as a bearing for the other guide roller section.

For this purpose, a projection of a guide roller section - for example, a bearing - positively engage in a recess on the other guide section. In addition to a freewheel, a clutch, a pin / bore storage, it would be quite possible to provide other facilities enabling independent rotation between the management sections; For example, ball bearings, bush bearing with lubrication and the like.

The folding sections in the superstructure each contain several Längsfalzeinheiten. Several of the longitudinal folding units can be arranged side by side in the folder superstructure. The longitudinal folding units can be positioned, for example, in pairs next to each other in three levels, as a result of which a very high production diversity can be achieved in newspaper presses.

Rotating web guide rollers in the superstructure, after the dryer, in the chill roller section as well as in front of the printing units in the imprinter area can likewise be equipped very advantageously with roller sections which can be operated independently of each other. The web guide can be designed so that parts of the web go through all the printing units during printing, while other parts are passed over or under them, bypassing individual printing units. Such flexibility is required to always effectively utilize a high investment newspaper rotation. By inventively proposed device effective utilization of a newspaper rotation is still increased.

The web guide roll which can be used according to the invention as a funnel inlet roller can be operated in superstructures with and without longitudinal cutting devices, the provision of longitudinal cutting devices further increasing the flexibility and versatility of a roller rotation. Preferably, the split web guide roller is used on newspaper presses, but also their use in commercial web presses is conceivable.

With reference to the drawings, the invention will be explained below.

Fig. 1

eine schematische Ansicht einer Rotation mit 2 jeweils die 3 Achtertürme aufweisenden Druckgruppen mit gemeinsamem Überbau und gemeinsamer Falzsektion,

Fig 2

die erfindungsgemäß vorgesehene Bahnführungswalze mit unabhängig voneinander betreibbaren Bahnführungsabschnitten und

Fig. 3

eine Darstellung der im Überbau vorgesehenen Längsfalzeinrichtung,

It shows:

Fig. 1

a schematic view of a rotation with 2 each of the 3 four-high towers having pressure groups with common superstructure and common folding section,

Fig. 2

the inventively provided web guide roll with independently operable web guide sections and

Fig. 3

a representation of the provided in the superstructure Längsfalzeinrichtung,

Fig. 1 shows a schematic view of a rotation with 2 groups each containing 3 eight-high towers with common superstructure and common folder.

In this configuration, two pressure groups 1, each with 3 four-high towers, of which the printed, multi-layer web strands are fed via a construction 2 to two pressure groups 1.6 common turning bars. In the turning barge 2, which receives a plurality of differently positioned turning bars 2.1, which may be arranged stationary or displaceable, the differently printed in the printing groups 1 and 6 material webs are combined according to the desired product composition -. according to the different newspaper inserts - superimposed and then further processed in cylinder parts of folders 16, 17.

In the first printing group 1, consisting of the four-high towers 1.1, 1.2 and 1.3, the webs A, B, C and D are each printed with different printing unit occupancy. The web A of printing group 1 is printed in the first four-high tower 1.1 4/1, i. an upper side of the web A is successively printed cyan, magenta, yellow and black in the superposed printing units, while the corresponding underside in the four-high tower 1.1, the uppermost printing unit is printed black before the web A leaves the four-tower 1.1. After leaving the four-tower 1.1, the 4/1 printed web A enters the turning bars via construction 2.

In the second four-high tower 1.2 of the printing group 1, the webs B and C are printed, each with different color assignment on top and bottom. The web B runs laterally into the second four-tower 1.2 and is printed on both sides black in the uppermost arranged to two printing units of the eight-tower 1.2 before the web B leaves the four-tower 1.2 in the direction of the turning barge deck 2 again. The web C is printed in the four-tower 1.2 4/1. It runs above the first pair of printing couples in the four-high tower 1.2, and is guided around the transfer cylinder of the lower printing unit, where cyan and yellow are printed one behind the other on the top of the web C. Subsequently, the web C passes the other printing units, where it is printed magenta and black. In the third printing unit in the Achtertum 1.2, the web C is printed black on the top and bottom. Thereafter leaves the now also 4/1 printed web C the four-tower 1.2 below the topmost printing unit of the four-high tower 1.2, in which already the web B has been printed on both sides 1 over 1.

In the printing group 1 remaining four-tower 1.3, the web D is printed on passage of all printing 4/4, the web D runs strictly vertical. The web D leaves the four-tower 1.3 at the top to run into the turning bar superstructure 2.

For the sake of completeness it should be mentioned that the four-high tower has its name therefore that in each of these 4 printing units 2 opposite printing units are arranged. Below the in Fig. 2 only schematically reproduced structure and the path paths of the four towers, the web supply reel receiving reel changers are included in the basements below the foundation, which are not shown here, through these are the four towers of the two pressure groups 1 and 6 with the supplied to bedrukkenden rail stock.

Analogous to pressure group 1, the further pressure group 6 contains three four-high towers 6.1, 6.2 and 6.3, in which the webs E, F, G and H are printed. In the illustrated embodiment, the web E is imprinted in the four-high tower 6.1 4/4, the webs F and G in the four-high tower 6.2 4/2 or 1/1 analogous to the second four-high tower 1.2 of the first pressure group. 1 In the four-tower 6.3, the H 4/4 is printed. Since the web guide and the color assignment behave in the other pressure group 6 as in the pressure group 1 already shown, reference is made to avoid repetition on what has already been said in connection with pressure group 1.

The running out of the pressure groups 1.6 tracks A, B, C, D and E, F, G and H enter the turning bar section 2; from there they are folded together and merged introduced into the folding section 3, which consists of several folding units in 3 levels 3.1, 3.2 and 3.3 arranged one above the other.

From there, the webs A, B, C and D or E, F, G and H enter into the cylinder parts of the folders.

2, the web insertion roller according to the invention is shown in detail with independently operable web guide sections.

In the folding section 3 shown in Fig. 1 are located in three superimposed planes 3.1, 3.2 or 3.3 pairwise juxtaposed formers 8.9, run through the funnel lugs 20 there longitudinally folded web strands. The web guide roller 7 acts in the illustration of FIG. 2 as a divided hopper inlet roller 7, with 2 independently operable roller sections 13 and 14. The two roller sections 13 and 14 each have a drive 11 and 12. Die Both roller sections 13 and 14 each have a drive 11 and 12, respectively. The two roller sections 13 and 14 are connected to one another in such a way that one roller section 13 or 14 functions as a bearing for the other roller section. For this purpose, a coupling 10 can be received between the roller sections 13 and 14, which contain a pin 10.1 or a recess 10.2, which allow a positive connection of the two roller sections 13 and 14, without hindering their independent rotation. In addition to a coupling 10 and ball bearings, lubricated bushes or other forms of storage can be realized, which allow independent rotation of the two web guide portions 13 and 14 with respect to each other. This implies that one of the web guide sections 13 and 14 can also be set still, while the other one is in rotation. In the case of double-width newspaper presses, for example, the hopper inlet rollers 7 preferably extend, for example, over the entire inlet width of both former chambers 8 and 9. In each case, one of the guide sections 13, 14 is assigned to a former 8 or 9. So that over the hopper 8 a single or multi-layer web strand can be processed independently of over the Bahnführungsabschnit 14 entering the former 9 web strand.

If in the present case of several web strands is mentioned, it is to be understood that by already provided in the turning bar superstructure 2 or in the full section 3 longitudinal cutting means the webs A, B, C and D in partial webs A1, A2; B1, B2, C1, C2, D1 and D3 can be cut longitudinally. The same applies to the webs E, F, G and H, which can be divided by means of longitudinal cutting units in partial webs E1, E2, F1, F2, G1, G2, H1 and H2. The individual partial webs can in turn consist of several railway layers.

In Fig. 3 a representation of the folding section in the superstructure is shown in an enlarged view.

In three planes 3.1, 3.2 and 3.3 are each 2 Längsfalztrichter 8, 9 arranged side by side. A hopper inlet roller 7 according to the invention is located above the former 8 and 9, which are located in the plane 3.2.

About the former 8 in the first plane 3.1 run the partial webs H1, H2 from the pressure group 6, while on the adjacent folder 9, the partial webs E1, E2, F1 and F2 are folded longitudinally. The partial webs E1, E2, F1, F2 run past the levels 3.2 and 3.3, respectively, into the cylinder part 17 of a folding apparatus. The longitudinally folded Part tracks H1, H2 run from a split web guide roller 7 and are past the lowest level 3.3, also introduced into the Falzapparaktylinderteil 17.

In the second level 3.2 is above the Längsfalztrichter 8, 9, the Trichereinlaufwalze 7, divided into two web guide sections 13 and 14 as shown in Fig. 2 which may be assigned to the respective independent drive 11 and 12 respectively.

About the web guide section 13 run the partial webs A1, A2, on the web guide section 14, the partial webs G1, G2 after Längsfalzung the former 9 in the Falzapparatzzylindererteil 17 a. The partial webs A1, A2, however, run in front of the lowest folding plane 3.3 in the Falzapparatzzylindererteil 16 a.

In the lowermost folding plane 3.3, which is configured analogously to the folding plane 3.1, the partial webs B1, B2 and through the former 9 the part webs C1, C2 as well as D1 and D2 are longitudinally folded by the longitudinal folding hopper 8. These run into the Falzapparatzylinderteil 16 together with the longitudinally folded in the plane 3.2 partial webs A1, A2. With the arrangement according to the invention of the divided hopper inlet roller 7, it is possible to guide either the partial webs A1, A2 or the partial webs G1, G2 independently of one another in the second plane 3.2 of the folding section 3. Depending on the run thickness can be achieved with the split funnel inlet roller 7 a guide of the sub-webs in different sub-web strands, so that the sub-webs E1, E2, F1, F2, G1, G2 and H1 and H2 are a small edition all a separate Falzapparatzuführer and the pressure This edition can be terminated without affecting the higher edition, consisting of the partial webs A1, A2, B1, B2, C1, C2 and D1 and D2. This can operate independently of the delivery 19 in the folding-chamber cylinder part 17 via the separate delivery 18 assigned to the folding device 16.

The example explained here of a web guide through the folding section 3 is only one of many possible examples of the web guide. It could just as well be at the partial web strands A1, A2, B1, B2, C1, C2 and D1 and D2 to the editions lower print order and at the partial web strands E1, E2, F1, F2, G1, G2 and H2 and H2 to the conditions stronger circulation act. Also, the hopper inlet roller 7 could be arranged in a different plane than the plane shown in Fig. 3 3.2, for example, in all three levels 3.1, 3.2, 3.3 of the folding section. 3

The inventively proposed solution increases the flexibility of production on roll rotations - especially in newspaper rotations - quite considerably. In addition to their use As funnel inlet roller 7 in a folding section 3, split web guide rollers according to the invention can also be incorporated as web feed rollers, as dancer rollers and as web tension rollers and as pull rollers for the material web integrated into the respective web paths in the rotation. For the sake of completeness, it should be mentioned that the formats produced in the folding section 3 according to the present application are preferably tabloid or simple transverse fold formats, which are quite common when folding in newspaper rotary printing presses. In the folding section 3 downstream Falzapparakterteilen 16, 17 can be made of such types tabloid or Querfalzformate already in the folding section 3 above the cylinder parts Querfalzvorgänge, double parallel folding operations and Deltafalzvorgänge connect, so that in the displays 18 and 19 designed copies in all common Newspaper formats can be produced.

LIST OF REFERENCE NUMBERS

1.

First pressure group

1.1

Four-tower 4/1

1.2

Eighteenth 4/1, 1/1

1.3

Four-tower 4/4

Second

Angle-bar deck

2.1

turning bars

Third

folding section

3.1

First floor

3.2

second level

3.3

Third level

4th

First folding section

5th

Second fold section

6th

Second pressure group

6.1

Four-tower 4/4

6.2

Eighteenth 4/1, 1/1

6.3

Eighteenth 4/1

A

Railway first group

A1

web strand

A2

Partial web strand

B

Railway first group

B1

Partial web strand

B2

Partial web strand

C

Railway first group

C1

Partial web strand

C2

Partial web strand

D

Railway first group

D1

Partial web strand

D2

Partial web strand

e

Train second group

E1

Partial web strand

E2

Partial web strand

F

Train second group

F1

Partial web strand

F2

Partial web strand

G

Train second group

G1

Partial web strand

G2

Partial web strand

H

second group

H1

Partial web strand

H2

Partial web strand

7th

Divided web roll

8th.

First folding unit

9th

Second folding unit

10th

clutch

10.1

spigot

10.2

recess

11th

drive

12th

drive

13th

First guide roller section

14th

Second guide roller section

15th

hopper level

16th

cylinder part

17th

cylinder part

18th

First copy delivery

19th

Second copy delivery

20th

former nose

Claims (14)

1. Device for guiding webs of material (A, B, C, D; E, F, G, H) via an angle-bar deck (2) of a folding section, which is subdivided into a plurality of planes (3.1, 3.2, 3.3), from which the webs of material (A to D), (E to H) enter folding apparatuses (4), (5), characterised in that infeed elements (7), which are former infeed rollers and have guide portions (13), (14), which are operable independently of each other and to which respectively separate drives (11, 12) are assigned, are accommodated on longitudinal folding devices (8), (9).
2. Device for guiding webs of material according to Claim 1, characterised in that the guide portions (13), (14) are provided with a free-wheel mechanism (10).
3. Device for guiding webs of material according to Claim 2, characterised in that the free-wheel mechanism (10) is arranged between the guide portions (13), (14).
4. Device for guiding webs of material according to Claim 1, characterised in that the folding section (3) contains respective longitudinal folding devices (8), (9).
5. Device for guiding webs of material according to Claim 4, characterised in that the longitudinal folding devices (8), (9) are accommodated in a side-by-side configuration.
6. Device for guiding webs of material according to Claim 4, characterised in that the longitudinal folding devices (8), (9) are accommodated in three planes (3.1, 3.2, 3.3).
7. Device for guiding webs of material according to Claim 1, characterised in that the guide portions (13), (14) are respectively rotatable relative to one another.
8. Device for guiding webs of material according to Claim 1, characterised in that one of the guide portions (13), (14) is used as a mounting support for the other respective guide portion (13), (14).
9. Device for guiding webs of material according to Claim 8, characterised in that one of the guide portions (13), (14) is supported with form locking in the other respective guide portion (13), (14).
10. Device for guiding webs of material according to Claim 9, characterised in that one of the guide portions (13), (14) is provided with a neck (10.1) accommodated in a recess (10.2) in the opposing guide portion (13), (14).
11. Use of a device according to one or more of Claims 1 to 10 in a folding apparatus superstructure for guiding webs of material (A, B, C, D; E, F, G, H) via an angle-bar deck (2) comprising folding sections, which are disposed in a plurality of planes (3.1, 3.2, 3.3), from which the webs of material (A, B, C, D; E, F, G, H) enter folding apparatuses (4), (5).
12. Use of a device according to one or more of Claims 1 to 10 in a folding apparatus superstructure for guiding webs of material (A to D, E to H) via an angle-bar deck (2) comprising longitudinal slitting devices for dividing the webs of material (A to D, E to H) into partial webs (A1, A2, B1, B2, C1, C2, D1, D2) or (E1, E2, F1, F2, G1, G2, H1, H2) comprising folding sections, which are disposed in a plurality of planes (3.1, 3.2, 3.3), from which the webs of material (A to D, E to H) enter folding apparatuses (4), (5).
13. Use of a device according to one or more of Claims 1 to 10 in a folding apparatus comprising a superstructure for guiding webs of material (A, B, C, D; E, F, G, H) comprising longitudinal slitting devices for dividing the webs of material (A, B, C, D; E, F, G, H) into partial webs (A1, A2, B1, B2, C1, C2, D1, D2) or (E1, E2, F1, F2, G1, G2, H1, H2) comprising folding sections, which are disposed in a plurality of planes (3.1, 3.2, 3.3).
14. Use of a device according to one or more of Claims 1 to 10 in a web-processing rotary press comprising a device for guiding material webs (A to D, E to H) via an angle-bar deck (2) comprising longitudinal folding devices (8, 9) located in a plurality of planes (3.1, 3.2, 3.3).

Images