EP1145850B1 - Folding unit for a web printing press - Google Patents

Description

The invention relates to a folding unit for a web-fed rotary printing press after Preamble of claim 1.

In addition to the illustrated illustration printing machines knows the state of Technology also still newsprint printing machines with which different types of printed products Newspaper printing products can be produced. Thus, e.g. EP-A-0 529 552 such a machine, and one of the largest types with six-plate widths Printing cylinders and formers in several vertical planes, being in the uppermost Level three funnels are arranged. A similar machine shows the EP-A 0 107 126 with three funnels in a vertical plane. Here is the funnel inlet roller longer than the maximum web width, with two turner bars per web are. This allows two Teübahnen be mixed without - as in the EP-A-0 529 552 discloses the funnels in several levels, i. vertical levels, arranged have to be. Finally, DE-C-393 250 shows a book printing machine with three Funnels in a vertical plane like Fig. 3 reveals this font.

Illustrative folders are usually with a folder, infeed rollers, draw rollers and a cylinder group equipped to fold products with a longitudinal fold and create one or two transverse folds. Such a folding unit is in the prospectus Lithoman, illustration web offset, page 20, MAN Roland Druckmaschinen AG, Augsburg, 2.97. The cylinder group contains a knife cylinder, a Puncture and folding blade cylinder, a jaw cylinder and possibly a gripper and folding blade cylinder. One or two further third folding devices allow one additional second longitudinal fold. In a printing press, just wide and simple in the periphery (i.e. 4 pages A4 in width and 2 sides in circumference), So can products with 8 pages A3, 16 pages A4, 16 pages A5 double use and 12 Pages delta fold or 24 sides delta fold plus second longitudinal fold are generated.

The desire is to have additional additional 4- or 8-page products (so-called Envelopes). This can be combined with a so-called cutting unit be achieved with an additional former. Folders with one Such additional former are shown in the said brochure, on page 19. It can be so to the known folding types 2 x 8 pages A4 or when using two Forming folders 4 x 4 pages A4. The used notation of e.g. 2 x 8 pages A4 for two products, each with 8 A4 pages is retained below. The same product extension can be with a complete additional so-called Implement double hopper folder.

The mentioned extension variants have some disadvantages. That's how they condition you additional belt dispensers, so-called disposal lines. In addition, an additional suggests Space required to book. So is the double funnel folder in the Extension of the machine. In addition, increased investment costs. After all are the aforementioned folder variants in combination with 1.5-fold wide machines, e.g. 24-side machines, or all machines with 3 divisible widths uneconomical. For example, on a 24-page machine, 4 x 4 pages are A4 only producible with a 2/3 wide web.

The invention is based on the object, a folding unit for an illustration printing machine to create that can be created with little technical effort and a high Production diversity allowed.

The object is achieved in a generic folding unit with the Means of the characterizing part of claim 1 solved. The invention Folder allows more to the production variants described Production possibilities. Also thanks to the presence of three funnels that is Guiding e.g. 6 strands or web strands over a funnel avoidable and thus a good folding accuracy and quality achievable. In addition, the folder is inexpensive to create and is characterized by a small footprint. It can be economical produce 4-sided products from a 6-side web, e.g. when printing with a 24-page machine 6 x 4 pages and when printing with a 48-page machine 12 x 4 pages.

Further advantages and features emerge from the subclaims in connection with the drawings.

Fig. 1:

ein Falzwerk mit drei Falztrichtern

Fig. 2:

den Schnitt II-II nach Figur 1

Fig. 3:

ein 24-seitiges Produkt

Fig. 4:

ein 4-seitiges Produkt der Produktion 6x4 Seiten

Fig. 5:

ein 8-seitiges Produkt

Fig. 6:

den Beschnitt eines Produktstromes.

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawings shows schematically:

Fig. 1:

a folding unit with three formers

Fig. 2:

the section II-II of Figure 1

3:

a 24-page product

4:

a 4-sided product of production 6x4 pages

Fig. 5:

an 8-sided product

Fig. 6:

the trimming of a product stream.

The folding unit shown in Figure 1 includes a knife cylinder 1, a Punktur- and folding blade 2 and a jaw cylinder 3. Optional the Punktur- and folding blade 2 is a stapler 4 and the Jaw cylinder 3 a gripper and folding blade 5 to perform a assigned to the second transverse fold.

From the jaw cylinder 3 leads a ribbon cable 6 to a copy switch 7th From the latter, strip lines 8, 9 go to a first paddle wheel 10 together first ribbon 11 and second paddle 12 together with second ribbon 13 from. In the band displays 11 and 13 are optionally up to two Copy separators 14 are arranged. Continue to pass the Strip lines 8 and 9 respectively a first and second third folding device 15, 16, to each a third paddle wheel 17 and a third band line 18 and a connect fourth impeller 19 and a fourth ribbon 20 (FIG. 2).

About the knife cylinder 1, the Punktur- and folding blade 2 and the Folding cylinder 3 containing cylinder group is a first former 21 arranged next to the on both sides in each case a second or third Forming hopper 22, 23 is positioned. On the web path from the first former 21 for Punktur- and folding blade 2 are inlet rollers 24, draw rollers 25, a transverse perforation device 26 and a longitudinal perforation device 27 arranged. At the second and third former 22, 23 close also inlet rollers 24.1, 24.2 and guide rollers 28 to which these funnels 22, 23 leaving strands 29, 30 also on the Querperforationseinrichtung 26, the longitudinal perforation 27 and To guide draw rollers 25 to the Punktur- and folding blade 2. To the the Funnels 22, 23 leaving strands 29, 30 is one each Längsbeleimvorrichtung 31, 32 adjustable.

The formers 21, 22, 23 are advantageous in their longitudinal direction, d. H. in the direction the strands running up to them, displaceable. The first former 21 is Advantageously carried out 4 pages wide to run on it usual production can. The second former 22 and the third former 23 are advantageously 2 Pages made wide, they are opposite the first former 21 partially ready executed, d. they have only a part of the width of the first former 21 on. However, the second former 22 may also be the full width of the first Folding funnel 21 have.

The printed by a non-illustrated printing machine web (or webs) is cut into strands and fed to the former 21, 22, 23. In Fig. 1 are above the funnels 21 to 23 examples of these supplied strand with specified different layers. For example, 6x6 pages can be fed become. By this is to be understood that each strand 29, 30 and 33 a 2 sides and contains a 1-side-wide partial web. Furthermore, on the perimeter of one Form cylinder arranged two printed pages, resulting in 2x6 for each strand Pages result. The symbolism is explained that the center of the center line of a Strange's line is a 2-page wide track and that up to the midline reaching stroke represents a 1-side wide track. The strands with 6x8 sides be z. B. in 2-lane operation of a 24-page printing press. The both strands with 4x6 sides become single-lane operation of a 24-Seiten-Druckmaschine obtained, with the two 1-side substrings through Longitudinal section obtained and placed on the two 2-sided partial strands become.

Below is the processing of 6x4 pages to be explained. The three each 2 sides wide strands 29, 30, 33 are made after longitudinal section of a web that in a 24-page press with a simple circumference (ie two standing pages in the circumference, 6 pages in width) was printed. The strands 29, 33, 30 are guided over the formers 22, 21, 23 and thereby folded longitudinally. The longitudinally folded strands 29, 33, 30 then pass the Infeed rollers 24.1, 24 and 24.2. About the guide rollers 28 are the following Strands 29 and 30 placed on the strand 33. The successive strands 29, 33 and 30 pass through draw rollers 25 and can pass through the Querperforationseinrichtung 26 and the longitudinal perforation 27 with a Querperforation and a longitudinal perforation are provided. After this Passing further pull rollers 25, the strands 29, 33, 30 from Knife cylinder 1 in conjunction with the Punktur folding blade 2 across cut, with the truncated signature in the direction of 2 sides, standing, having. The following of punctures of Punktur- and folding blade 2 recorded signatures are from folding knives of the puncture and Folding blade 2 handed over in jaws of the jaw cylinder 3 and thereby transversely folded. The resulting 24-sided product 34 (1x24 pages) is shown in FIG. 3 shown. The Kopfgefalzten products 34 are connected via the ribbon 6 to Exemplarweiche transported 7 and there either on the ribbon cables 8 and 9 or 8 or 9 divided. With these ribbon cables 8, 9, the products 34 through the first and second 3.Falz device through the Schaufelradauslagen with the first paddle wheel 10 and the first bandline 11 and the second Paddle wheel 12 and the second belt line 13 is supplied.

The products 34 can be externally trimmed, in which the transverse fold and optionally also the region of the punctures 35 is cut off. This Bleed is symbolically indicated in Fig. 3. After trimming emerge Six products 34.1 with 4 pages (6x4 pages) shown in FIG. Of the Trimming can, for example, with a familiar to the expert Rotaschneider done. Such a tailor cuts a product stream with rotating knives. A Rota cutter 42 is shown schematically in FIG. In the present case, first the product flow is 90 ° in its direction diverted. This is done by means of a subsequent to the ribbon cable 11 Strip line 11.1 with a direction of rotation rotated by 90 ° to the former. From the now transported on the ribbon cable 11.1 products 34 cuts the Rotarschneider 42 from the transverse fold and the range of punctures 35, the in Transport direction lie laterally. The resulting 4-sided products 34.1 together Cutting waste 43 are shown. With a 48-page printing press (4 standing Pages in the scope, 6 pages in width) can twelve products 34.1 with 4 pages (12 x 4 pages). There are two products in another Rotation of Punktur- and folding blade cylinder collected and only then from Handing folding knife in the jaws of the jaw cylinder 3. at Two-lane operation, for example, 6 x 8 pages the formers 24, 24.1, 24.2, which can then be delivered to six products with 8 pages (6 x 8 pages) are processable. The processing via three formers 21 to 23 also has the advantage that high, over a funnel leading to layer numbers avoidable are, for. B. the guiding of six layers in two-lane operation over a Funnel.

By longitudinal displacement of the former 21 to 23 is adjustable that this leaving strands 33, 29, 30 when merging not flush with each other lie. This is in the aforementioned brochure Lithoman .... on page 19 for two Strands also shown. The already something to each other across the transport direction offset products 34.2 (FIG. 5) can then continue by means of Copy separators 14 laterally offset (transverse to the transport direction) be so that three spaced product streams with products 34.2 can be produced with 1x8 pages. After external trimming (cutting off the Querfalzes) are 2 products with 4 pages (2x4 pages).

When passing the first and second 3.Falz devices 15, 16, the Products 34 are also provided with a third fold (second longitudinal fold). The Delivery of these folded products via the third paddle wheel 17 to the third Band line 18 and the fourth paddle wheel 19 on the fourth band line 20th instead its folded products can only on the fourth paddle 19 on the fourth ribbon cable 20 are stored (FIG. 2).

By a so-called border gluing, the variety of creatable Increase products even further. This is done by means of Längsbeleimvorrichtungen 31, 32, the strands 29 and 30 in the vicinity of the of the formers 22, 23rd produced Längsfalze on each of the strand 33 side facing with a Glue spread. When juxtaposing the strands 29 and 30 on the Strand 33 is then the bond. For the production with flange gluing the former 21 to 23 in the direction of their longitudinal displacement so adjusted that the longitudinal folds created by them when stacking the Strands 29, 30, 33 are flush with each other. When feeding 6 x 4 pages z. B. then the 24-sided product shown in Fig. 3 is obtained, the three Signatures on the longitudinal folds are still glued.

As a further variant, the described, three former 21 to 23 containing folding unit are additionally supplemented with a cutting unit 36. To illustrate the optional providence of the cutting unit 36 is this dashed line in Fig. 1 and set in brackets position number specified. The cutting unit 36 includes two pairs of draw rollers 37, a Cutting cylinder pair 38, a ribbon cable 39, a fifth impeller 40 and a fifth ribbon 41.

The second folding hopper 22 leaving strand 29.1 is after passing the inlet rollers 24.1 and a pair of tension rollers 25 to the Cutting unit 36 out. There he is about to 37 more pairs of draw rollers passed to the cutting cylinder pair 38, where he cut to produce 2x4 sides becomes. These products are accelerated by the ribbon cable 39 and into the fifth impeller 40 promoted, the products on the fifth belt line 41st interprets. The longitudinally folded from the formers 21 and 23 strands 33, 30th become the knife cylinder 1, Punktur- and folding blade 2 and Jaw cylinder 3 out. In this case, the formers 21 and 23 so far be moved, that the strands 33 and 30 side by side in the Enter cylinder groups 1 to 3. The processing and display of the Strands 33 and 30 produced products 34.1 on the first and / or second Ribbon line 11,13 takes place in the manner already described. It can be three Copy streams 2x4 pages with different print images are generated. The delivery takes place on the strip lines 11, 13 and 41.

The invention was based on standing production (standing format) described. It is also in lying production (lying format) applicable, ie in transverse to the direction of the web pages.

LIST OF REFERENCE NUMBERS

1

diameter cylinder

2

Puncture and folding blade cylinder

3

jaw cylinder

4

stitcher

5

Gripper and folding blade cylinder

6

stripline

7

copy diverter

8th

stripline

9

stripline

10

first paddle wheel

11

first ribbon line

11.1

stripline

12

second paddle wheel

13

second ribbon line

14

Copy separation device

15

first third folding device

16

second third folding device

17

third bucket wheel

18

third tie line

19

fourth paddle wheel

20

fourth ribbon line

21

first former

22

second former

23

third former

24

lead-in rollers

24.1

lead-in rollers

24.2

lead-in rollers

25

drawing rollers

26

Querperforationseinrichtung

27

Längsperforationseinrichtung

28

guide roll

29

strand

29.1

strand

30

strand

31

Längsbeleimvorrichtung

32

Längsbeleimvorrichtung

33

strand

34

product

34.1

product

34.2

product

35

puncture

36

cutting unit

37

drawing rollers

38

Pair of cutting cylinders

39

stripline

40

fifth bucket wheel

41

fifth ribbon line

42

Rotaschneider

43

cutting waste

Claims (10)

1. A folding unit for a web-fed rotary printing press for illustration printing having a blade cylinder (1), a pin and folding-blade cylinder (2) and a folding-jaw cylinder (3) and also a first folder former (21) and a second folder former (22) that is arranged next to the latter, via which web ribbons (33, 29) can be longitudinally folded and subsequently fed to the folding unit, characterised in that arranged next to the first and second folder former (21, 22) in the same vertical plane there is a third folder former (23) via which web ribbons (30) can be longitudinally folded and subsequently jointly fed to the folding unit.
2. A folding unit according to claim 1, characterised in that the folder formers (21 to 23) can be displaced in a vertical longitudinal direction in the web-travel direction of the leading web ribbons.
3. A folding unit according to claim 1 or 2, characterised in that the third folder former (23) is only partly as wide as the first folder former (21).
4. A folding unit according to one of the previous claims, characterised in that a respective longitudinal gluing device (31, 32) can be set on the web ribbons (29, 30) leaving the second and third folder formers (22, 23).
5. A folding unit according to one of claims 1 to 4, characterised in that the products (34) leaving the folding unit are delivered onto a first band line (11) by way of a first spider wheel (10).
6. A folding unit according to one of claims 1 to 4, characterised in that the products (34) leaving the folding unit are delivered onto a first and/or second band line (11, 13) by way of a first and/or second spider wheel (10, 12).
7. A folding unit according to claim 6, characterised in that the first or second band line (11, 13) has copy-separating devices (14) moving the products (34) of the band lines off from each other.
8. A folding unit according to claim 5 or 6, characterised in that the cross fold and optionally the pin region (35) can be cut off from the products (34) that are delivered by the first and/or second spider wheel (10, 12) to a product stream.
9. A folding unit according to one of claims 1 to 4, characterised in that the products leaving the folding unit, after passing through second quarter-folding devices (15, 16), are delivered onto a third and fourth band line (18, 20) by way of a third and fourth spider wheel (17, 19) respectively.
10. A folding unit according to one of the previous claims, characterised in that arranged downstream of the second folder former (22) there is a cutting unit (36) with a pair of cutting cylinders (38) transversely cutting the web ribbon (29.1) that is supplied and also with a fifth spider wheel (40) delivering the products that are obtained onto a fifth band line (41).

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