EP1970339B1 - Folding unit of a roller printing press - Google Patents

Description

The invention relates to a folding unit of a web-fed printing press according to the preamble of patent claim 1.

The DE 102 59 655 B3 discloses a strand mixing device of a printing machine positioned between a longitudinal folding device and a transverse folding device of a folding unit of the printing press. The longitudinal folding device of the folding unit disclosed therein comprises two folding hoppers, whereby in the region of each folding hopper incoming webs of material entering the respective hemming hopper are cut into partial webs by a longitudinal cutting device associated with the respective hemming hopper. Each reel leaves a strand of partial webs, according to the DE 102 59 655 B3 a strand of partial webs, which leaves one of the two formers, is divided into two sub-strands of sub-webs. A first of these two partial strands is guided by a stapler, another of the two partial strands is combined with the strand leaving the other former from partial webs without these partial webs entering the area of a stapler. The folding unit of DE 102 59 655 B3 thus requires two formers in the region of the longitudinal folding device, wherein a strand of partial webs, which leaves one of the two formers, can be divided into two sub-strands of partial webs. Such a folding unit has the disadvantage of limited flexibility and limited production possibilities. Furthermore, the same, since in the region of the longitudinal folding unit two formers are needed, consuming and expensive.

A folding unit with the features of the preamble of claim 1 is known from EP-A-1681258 known.

On this basis, the present invention is based on the problem to provide a novel folding unit of a web printing press.

This problem is solved by a folding unit of a web-fed printing press according to claim 1

With the folding unit according to the invention costs can be reduced and flexibility and production possibilities can be increased.

The sub-strands are downstream of the or each stapler and upstream of the Querfalzeinheit unifying. Preferably, at least two sub-strands are each assigned a stapler.

Fig. 1:

eine nicht erfindungsgemäße Falzeinheit einer Rollendruckmaschine;

Fig. 2:

eine nicht erfindungsgemäße Falzeinheit einer Rollendruckmaschine;

Fig. 3:

eine nicht erfindungsgemäße Falzeinheit einer Rollenrotationsdruckmaschine,

Fig. 4:

eine erfindungsgemäße Falzeinheit einer Rollenrotationsdruckmaschine nach einem erste Ausführungsbeispiel;

Fig. 5:

eine erfindungsgemäße Falzeinheit einer Rollenrotationsdruckmaschine nach einem zweiten Ausführungsbeispiel; und

Fig. 6:

eine nicht erfindungsgemäße Falzeinheit einer Rollenrotationsdruckmaschine.

Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:

Fig. 1:

a non-inventive folding unit of a web-fed printing press;

Fig. 2:

a non-inventive folding unit of a web-fed printing press;

3:

a non-inventive folding unit of a web-fed rotary printing press,

4:

a folding unit according to the invention of a web-fed rotary printing press according to a first embodiment;

Fig. 5:

a folding unit according to the invention of a web-fed rotary printing press according to a second embodiment; and

Fig. 6:

a non-inventive folding unit of a web-fed rotary printing press.

The folding unit of Fig. 1 includes a Längsfalzeinrichtung 10 and a Querfalzeinrichtung 11. The Längsfalzeinrichtung 10 includes a single former 12, wherein in the former 12, a strand 13 of several stacked superposed printing material travels. In the area of the former 9, the web of printing material webs entering the former 12 is separated by longitudinal cutting into partial webs by a longitudinal cutting unit associated with the former 12, wherein a web 14 leaves part webs. Then, if like in Fig. 1 In this case, when the strand 13 entering the former 12 comprises a number m of printing material webs, the strand leaving the former 12 comprises the lengthwise cutting of all printing material webs of the strand 13 on the former 12 14 a number of 2xm partial webs.

Alternatively, it is also possible that at least one printing material web of the strand 13 is assigned a respective longitudinal separating device upstream of the folding funnel 12. In this case, then the printing material webs of the strand 13 are individually separable by longitudinal cutting, it can be provided that only some of the printing material webs are separated by longitudinal cutting in partial webs.

The folding webs 12 of the longitudinal folding device 10 leaving partial webs are fed to the Querfalzeinrichtung 11, wherein in the region of the Querfalzeinrichtung 11 separated from the partial webs by cross-cutting copies and introduced into these copies Querfalze. Thus, according to Fig. 1 the Querfalzeinrichtung 11 a Schneidmesserzylinder 15 to separate from the partial web copies by cross-cutting. Furthermore, the transverse folding device 11 comprises a folding blade cylinder 16 and a jaw cylinder 17 in order to form transverse folds on the copies separated by transverse cutting.

The strand 14, which leaves the single former 12 of the longitudinal folding device 10, seen in the transport direction of the sub-webs or printing material webs upstream of the Querfalzeinrichtung 11 divided into at least three sub-strands, wherein at least one of the sub-strands is assigned a stapler.

In Fig. 1 the web 14 leaving the former 12 is subdivided into three sub-strands 18, 19 and 20, wherein each of the sub-strands 18, 19 and 20 is assigned a stapling device 21. In the field of staplers 21, the respective sub-strands 18, 19 and 20 by z. B. wire stitches interconnected. As Fig. 1 can be removed, the sub strands 18, 19 and 20 after passing through the staplers 21 upstream of the Querfalzeinrichtung 11 reunited.

This results in the so-called double production three nested, stapled products. The so-called collective production results in up to six nested stapled products.

In the strand guide of the partial strands 18, 19 and 20 are devices to perform the merging or merging of the partial strands 18, 19 and 20 in accordance with the register.

The number of partial webs per sub-strand 18, 19 and 20 can be chosen freely. So it is z. B. possible that each of the partial strands 18, 19 and 20 has the same number of partial webs. It is also possible that the partial strands 18, 19 and 20 differ with regard to the number of partial webs.

Fig. 2 differs from Fig. 1 in that not every one of the partial strands 18, 19 and 20 is assigned a stapler 21, but only the two outer partial strands 18 and 20 of the three partial strands.

As already stated, it is possible that the printing material webs of the strand 13 can be separated individually by longitudinal cutting. So z. B. in connection with the Fig. 2 It may be provided that only the outer partial strands 18, 20 running through the stapling apparatus 21 comprise partial webs produced in the tabloid format by longitudinal cutting, whereas the middle sub-strand 18 comprises undivided printing material webs in broadsheet format. It is also included Fig. 3 to 6 It is possible for one partial strand or even several partial strands to comprise or comprise unseparated printing material webs in broadsheet format.

In Fig. 3 is only the middle sub-strand 19 of the three sub-strands a stapler 21 assigned.

In Fig. 1 to 3 is the single former former 12 leaving strand 14 in three sub-strands 18, 19 and 20 divided from partial webs. Fig. 4 . 5 and 6 On the other hand, embodiments in which the strand 14 leaving the single former 12 of the longitudinal folding device 10 can be divided into five sub-strands 18, 19, 20, 22 and 23 can be divided.

In the embodiment of Fig. 4 In this case, a stapling apparatus 21 is assigned to each of the outer partial strands 18 and 20 and the middle partial strand 19. In the embodiment of Fig. 5 In contrast, the two sub-strands 22 and 23, each extending between the middle sub-strand 19 and an outer sub-strand 18 and 20, respectively, a stapler 21 assigned. In the Fig. 6 the middle sub-strand 19, both outer sub-strands 18, 20 and the sub-strand 23 extending between the sub-strands 19, 20 are each assigned a stapling device 21.

LIST OF REFERENCE NUMBERS

10

longitudinal folding

11

transverse folding

12

formers

13

strand

14

strand

15

Cutting knife cylinder

16

folding blade

17

jaw cylinder

18

partial strand

19

partial strand

20

partial strand

21

stitcher

22

partial strand

23

partial strand

Claims (2)

1. A folder unit of a reel-fed printing press having a longitudinal folding device (10) and a transverse folding device (11) arranged seen in transport direction of the substrate material downstream of the longitudinal folding device (10), wherein the longitudinal folding device (10) comprises a single former (12), wherein substrate webs running into the former (12) as ribbon (13) are cut into part webs through a longitudinal cutting device assigned to the former (12) or through a longitudinal cutting device assigned in each case to at least one substrate web of the ribbon (13), which leave the former (12) as ribbon (14), wherein the ribbon (14) leaving the former (12) can be divided downstream of the former (12) and upstream of the transverse folding device (11) into part ribbons (18, 19, 20, 22, 23), and wherein at least one of the part ribbons in each case is assigned a stitcher (21), characterized in that the ribbon (14) leaving the former (12) can be divided into five part ribbons (18, 19, 20; 22, 23), wherein exclusively the middle part ribbon (19) and the two outer part ribbons (18, 20) or exclusively the two part ribbons (22, 23) running in each case between the middle part ribbon (19) and an outer part ribbon (18, 20), are assigned a stitcher (21) each.
2. The folding unit according to Claim 1, characterized in that the part ribbons (18, 19, 20, 22, 23) can be united downstream of the or each stitcher (21) and upstream of the transverse folding device (11).

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