DE102009001947B4 - Folding superstructure of a web-fed rotary printing machine - Google Patents

Abstract

Falzüberbau a web-fed rotary printing press with four juxtaposed Längsfalztrichtern (01, 02, 03, 04), wherein at least one of the two middle Längsfalztrichter (02, 03) is adjustable in its effective width and wherein at least one outer and a central Längsfalztrichter (01; 03) are arranged displaceably transversely to a machine flight, wherein in a first operating mode an effective width (b1) of all longitudinal folding funnels (01; 02; 03; 04) is the same, wherein in a second operating mode an effective width (b2) of In the first operating mode, the four longitudinal folding hoppers (01, 02, 03, 04) have four broadsheet sections in non-collecting mode or in the case of two longitudinal folding hoppers (02; 03) eight broadsheet sections are arranged in the collecting operation, each with equally wide newspaper pages längsfalzend, wherein in the second mode of operation, the two middle ren Längsfalztrichter (02; 03) two strands in tabloid production by means of funnel cutting generating are arranged.

Description

The invention relates to a folding superstructure of a web-fed rotary printing machine.

The folding superstructure has the task of the printed endless web, z. As paper webs according to the page number, the format and the color assignment - taking into account the final product - to guide over various turning bars in the right direction and summarize, then to feed them via one or more former the actual folder for further processing. With a small investment, it enables a decisive improvement of the actual folder.

There are various funnel structures known. If newspapers are produced with large numbers of pages, it must be driven with two collecting strands, as can not be driven with any number of webs per formers. This results in the use of a second former, one then speaks of the double funnel construction. With double funnels, copies of two booklets for double production or four booklets for collective production are possible. If more folders per newspaper are needed, further folders can be installed. This can be a third former close to the first two, or a single or double funnel can be set up via the first double funnel (balloon funnel). This considerably increases the number of possibilities.

For a newspaper rotation, which should be able to produce up to 4 or in collective production up to 8 newspaper sections in one run in non-collection production, usually 4 longitudinal folding devices are required.

From the US 4,725,050 A a folding superstructure of a double-width rotary printing machine is known in which on the same level with two inner funnels of a Balloon funnel on both sides of the machine alignment each an outer funnel is arranged at a distance from the inner funnels. This allows six to eight booklets to be produced per newspaper without reducing production speed. With the help of a turning bar construction, it is also possible to produce a newspaper with an odd number of booklets and to vary the page numbers of the individual booklets.

The DE 28 46 191 A1 describes a folder for web-fed rotary printing presses, in which the transverse fold takes place on folding tables on the stationary copy. The folder is preceded by a folding superstructure comprising 8 formers in balloon arrangement. This is only a festformatige production possible.

The WO 97/17200 A2 describes a Längsfalztrichteranordnung, in which four formers are arranged side by side. Two of the formers are displaceable vertically and in the longitudinal direction of the web run.

In the EP 1 837 179 A1 is a double-width rotary printing machine described in which in a hopper assembly with at least two adjacent formers a former is formed asymmetrically with respect to its width. The funnel edges are of different lengths. With this system, products of different widths can be produced. In the non-standard 3-sided assignment of the printing plate cylinder at least one partial web must be turned.

From the EP 1 992 485 A2 a double-width web-fed rotary printing press is known in which for the purpose of producing different formats, the side-by-side formers of a funnel group can be varied in their effective width so that two operating situations can be assumed, wherein in a second operating situation at least one of the funnel flanks has a smaller width. It can be produced on a double-width system and five narrower sides. The funnels are displaceable transversely to the direction of web travel. Turning bars are needed. In addition, an additional third former hopper can be provided, which can be produced up to three sections. For the purpose of changing the effective width of the formers optionally attachable or removable lugs are provided, or the formers are offset in height.

If, in addition to the fixed-format newspaper, additional newspaper-like products of different, even larger page widths (broadsheet) or page height (tabloid) are to be produced by the rotary printing press, usually further funnels of greater width are installed.

In rotary printing presses of older design, the folding units including superstructures determined the machine height, so that the height of the printing units had little influence on the required hall height. Today's printing units are considerably lower and, among other things, open up a potential for savings in building costs, among other things. In order to realize this height advantage of the printing units, but must also build the folders including superstructures lower. This stands against the above-mentioned demand for several newspaper sections, especially in newspaper presses of American design.

The invention has for its object to provide a folding superstructure of a web-fed rotary printing press with low height and large production variety.

The object is achieved by the features of claim 1.

The achievable with the present invention consist in particular that with the former arrangement up to four fixed-format newspaper sections or two (non-collecting) or four (collecting) sections with a larger page width or up to four sections of smaller page width (non-collecting) can be generated. Variable width material webs can advantageously be performed without turning to the folding direction. This results in short Einziehwege and thus less waste paper and easier retraction of the web. In addition, different formats can be generated by the arrangement of the printing plates on the plate cylinder at the same web widths. Due to the low overall height, the fold superstructure can be integrated into existing systems (halls) without modification.

In this case, four Längsfalztrichter are arranged side by side in a funnel plane. The middle two formers are adjustable in their effective width and three of the Längsfalztrichter are transversely to the direction of a web to be printed or transversely to the machine alignment displaced.

In a preferred embodiment of the invention, the (s) in the effective width adjustable (s) Längsfalztrichter on a recess on one of its flanks, in which for widening a filler is used.

Advantageously, the funnel lugs located at the ends of the longitudinal folding funnels are arranged in a horizontal and / or in a vertical plane.

An embodiment of the invention is illustrated in the drawings and will be described in more detail below.

Show it:

1 two different views a), b) and c) of a folding superstructure in the production of four strands in "standing" production (Broad-sheet) and a view of the resulting printed product;

2 two different views a), b) and c) of the fold superstructure in the production of two strands in "lying" production (tabloid) and a view of the resulting printed product.

In 1 a preferred embodiment of the invention in a first operating state of a printing press, in particular a web-fed rotary printing press is shown. It shows 1a ) a spatial view, 1b ) the representation of a product 24 and 1c ) a front view of the folding superstructure.

Four formers 01 ; 02 ; 03 ; 04 , in particular longitudinal folding funnel 01 ; 02 ; 03 ; 04 are juxtaposed in a horizontal plane, preferably on a funnel inlet roller 06 arranged.

A material web 07 is in a printing unit 08 with form cylinder 09 , in particular plate cylinder 09 and transfer cylinder 11 , in particular blanket cylinder 11 printed in a known manner. On the plate cylinder 09 are six printing plates 12 or pages 12 standing side by side and two printing plates 12 or pages 12 in the circumference of the plate cylinder 09 arranged. This is in the 1a ) both on the plate cylinder 09 , as well as on the material web 07 in front of the funnel inlet roller 06 shown.

In the illustrated first operating state are the Längsfalztrichter 01 ; 02 ; 03 ; 04 in a closed position. In this operating state, all Längsfalztrichter 01 ; 02 ; 03 ; 04 an effective width b1. One of the longitudinal folding funnel 01 supplied strand 13 comes for example from a second printing unit, not shown 08 , whose material web 07 for example, longitudinally cut and over turning bars 14 is supplied as a separate strand.

In this illustrated first operating state, the four Längsfalztrichter 01 ; 02 ; 03 ; 04 , z. B. the required four broadsheet sections in non-collection mode ( 1b )) or eight broadsheet sections in collection mode with equally wide newspaper pages. This will be the webs 07 each printed with six newspaper pages in width. Of course, several printing units 08 be assigned to the folding superstructure. But there are also other assignments of the printing cylinder possible.

The two outer Längsfalztrichter 01 ; 04 are fixed-sized and have on their inner flank 15 above the effective width b1 a recess 16 which preferably parallel to the adjacent flank 17 the inner Längsfalztrichter 02 ; 03 runs. The two inner longitudinal rebate funnels 02 ; 03 are wider in their width b1 (total width), z. B. 34 '' wide. One of the inner longitudinal fold hoppers 03 , carries a recess 18 , which are above the effective width b1 and parallel to the edge of the adjacent Längsfalztrichters 02 runs.

The four strands 19 be in a known manner a folder 21 fed.

In 2 different views of the fold superstructure in a second mode of operation (generation of two strands in "lying" production (tabloid)) are shown. It shows 2a ) again the spatial view, 2 B ) the product 24 and 2c ) the front view of the folding superstructure.

On the plate cylinder 09 are printing plates 12 or four pages 12 lying next to each other and four printing plates 12 or pages 12 arranged on the circumference. To adjust the fold superstructure to this mode of operation, the longitudinal folding hoppers were used 02 ; 03 ; 04 along the in 2c ) and in 1a ) shown arrows 22 postponed.

The middle longitudinal folding funnels 02 ; 03 have in this mode an effective width b2, the outer Längsfalztrichter 01 ; 04 are not used. For setting the effective width b2 on the longitudinal rebate hopper 03 was in the recess 18 a filler 23 used.

In tabloid production, a funnel cut is made in a known manner instead of the longitudinal fold. This is how the in 2 B ) shown products 24 ,

LIST OF REFERENCE NUMBERS

01

Forming hopper, longitudinal folding hopper

02

Forming hopper, longitudinal folding hopper

03

Forming hopper, longitudinal folding hopper

04

Forming hopper, longitudinal folding hopper

05

06

Former inlet roller

07

web

08

printing unit

09

Form cylinder, plate cylinder

10

11

Transfer cylinder, blanket cylinder

12

Pressure plate, side

13

strand

14

turning bar

15

flank

16

recess

17

flank

18

recess

19

strand

20

21

folding

22

arrow

23

filling

24

product

b1

Wide, effective

b2

Wide, effective

Claims (7)

Falzüberbau a web-fed rotary printing press with four juxtaposed Längsfalztrichtern ( 01 ; 02 ; 03 ; 04 ), wherein at least one of the two central longitudinal folding funnels ( 02 ; 03 ) is adjustable in its effective width and wherein at least one outer and one middle longitudinal folding funnel ( 01 ; 02 ; 03 ; 04 ) are arranged displaceably transversely to a machine flight, wherein in a first operating mode an effective width (b1) of all longitudinal folding funnels ( 01 ; 02 ; 03 ; 04 ) is the same size, wherein in a second operating mode, an effective width (b2) of the two central longitudinal folding funnels ( 02 ; 03 ) is greater than an effective width (b1) of the outer Längsfalztrichter ( 01 ; 04 ), wherein in the first operating mode the four longitudinal folding funnels ( 01 ; 02 ; 03 ; 04 ) four broadsheet sections in the non-collection mode or eight broadsheet sections are arranged in the collecting operation with equally wide newspaper pages along longitudinal folds, wherein in the second mode of operation, the two central longitudinal folding funnels ( 02 ; 03 ) two strands in tabloid production by means of funnel cutting generating are arranged. Folding superstructure according to claim 1, characterized in that the adjustable in its effective width Längsfalztrichter ( 03 ) a recess ( 18 ) has on one of its flanks, which parallel to an adjacent flank of the arranged alongside Längsfalztrichters ( 02 ) runs. Folding superstructure according to claim 2, characterized in that to increase the effective width of the width-adjustable Längsfalztrichters ( 03 ) a filler ( 23 ) in the recess ( 18 ) can be used. Folding superstructure according to claim 1, characterized in that in the first operating mode material webs ( 07 ) each have six newspaper pages (broadsheet) side by side. Folding superstructure according to claim 1, characterized in that in the second operating mode material webs ( 07 ) each have four sides lying (tabloid) side by side. Folding superstructure according to one of claims 1 to 5, characterized in that both middle longitudinal folding funnel ( 02 ; 03 ) are adjustable transversely to the machine flight. Falzüberbau according to one of claims 1 to 6, characterized in that the funnel nose at the ends of the four Längsfalztrichter ( 01 ; 02 ; 03 ; 04 ) are arranged in a horizontal plane and / or in a vertical plane.

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