CH684637A5 - Means having a rotary printing machine for producing multi-sheet folded printed products. - Google Patents

Description

1

CH 684 637 A5

2nd

description

In the production of multi-leaf folded printed products with a rotary printing press, the web material containing the printed pages of the products lying side by side next to one another or in succession after the printing is divided by longitudinally running folds and / or cuts into partial webs which are combined to form strands of the fold delivery of the Printing machine are fed. Here, the strands are broken down into cross-sections into partial products, which, if necessary, are folded once or twice and laid out in a shingled formation.

To increase the production capacity and increase the economic efficiency, i.a. the width of the printing units increased in order to be able to produce a large number of printed pages side by side at the same time. Of course, this means that the wide web has to be broken down into a corresponding number of sub-webs, although it is quite complex and complex to design the pressure assignment plan and to bring the sub-webs together over many deflections in such a way that the correct print pages lie on top of one another and the sequence the printed pages are correct after folding.

US Pat. No. 4,179,107 deals with the difficulties which have arisen as a result of the increase in the printing width, especially when using the multicolor printing process. In order to avoid the problems from the outset, it is proposed to limit the printing width in such a way that the web material only has to be divided into two partial webs, which are wound up next to one another on a common winding core. Here, strand formation is basically avoided. The two partial webs are first unwound in a collecting station and are superimposed by corresponding changes in direction so that adjacent printed pages come to lie on one another. In order to arrive at the desired number of pages, several such twin spools are included in the strand formation at the collecting station. The strand formed in this way can then be broken down into cross-sections into partial products which, after folding, can be collected or collected to form the desired end product. So that the strand formation from the partial webs, which are unwound in pairs from twin rolls, placed one on top of the other and brought together with other webs, is achieved satisfactorily, the partial webs have perforations which are attached to the web material before it is divided into partial webs. According to this concept, the printing machine is thus returned to its elementary function, namely printing, and is freed from any equipment even for the formation of strands, let alone for folding.

The present invention takes the diametrically opposite path. In fact, it is not based on the task of tracing the printing press back to its elementary function, but rather, in connection with the high production capacity that was brought about in modern printing presses by increasing the printing width, the cost-effectiveness was further increased by increasing the speed beyond what is possible today will. In other words, the present invention is based on the technical object of utilizing the ability of modern printing presses which these have when converting wide web material into strands which can be broken down into partial products. This object is achieved by the characterizing features of claim 1.

Here, the partial webs are not wound up, rather the strands are formed in the tried-and-tested manner by the appropriate device of the printing press, and the printing speed can easily be increased up to the printing technology limit, since the strands are formed by folding and / or cutting in the longitudinal direction and it is possible to wind up the strands at any given speed. Since the strands originate directly from the web and when they are actually connected to the web, the partial webs need not be marked from the point of view of strand formation. Conversely, however, their marking or the marking of the strands enables a plurality of strands to be brought together in the unwinding device, in order to form end products from the partial product strands during disassembly or folding. Since several unwinding devices can be provided per printing press, the folded end products can be laid out at the same speed at which the printing press can produce the partial product strands. Conversely, this enables the number of pages of the partial products to be determined in such a way that the printing press can print at maximum speed or under optimal circumstances, since the partial products are collected in the unwinding device. Accordingly, the main product to be printed at the last minute because the last messages contain the latest product can also be limited to the minimum, so that the start of printing can be postponed more than usual.

Embodiments of the subject matter of the invention are shown in the drawing. Show it

Fig. 1 shows a possible representation of the strand formation by cutting the web material in the longitudinal direction and folding in the former, wherein the two strands are brought together to form a multiple strand

FIG. 2 shows a schematic view of an exemplary embodiment of the subject matter of the invention

Fig. 3 a-d in connection with Fig. 1 some possible strand cross-sections

Fig. 4 in a graphical representation another possibility of strand formation with subsequent winding of the strand

Fig. 5 a-b in connection with Fig. 4 some possible strand cross-sections

Fig. 6 is an unwinder

5

10th

15

20th

25th

30th

35

40

45

50

55

60

65

2nd

3rd

CH 684 637 A5

4th

1, the web material 2 guided over a pressure roller 1 is divided into partial webs 21 and 22 by means of a cutting knife 3, which are folded in the longitudinal direction in the former 4. The resulting strands 201 and 202 are then combined to form a multiple strand 200. These processes and the necessary rods 6 of the folder are known. The rods 7, which illustrate the strand guidance, are of particular importance here. This strand guide is at the end of the strand formation.

Fig. 2 shows the folder 8 with the strand outlet 7 and a winding device 9 connected to it with a driven winding core 10 and a strand winding 11 emerging thereon. The strand emerging from the strand outlet is guided by a rotating cross cutter 12, which is provided primarily for this purpose is to separate the strand for the purpose of replacing a full winding core with an empty one. The process corresponds to that when changing an empty roll of the paper web to be printed for a full one. The precautions in this regard therefore do not need to be explained in more detail here either, it is only important that the cross cutter 12 can be controlled arbitrarily.

Of course, the strand does not always have to be wound up, namely not if the partial products do not come from an intermediate storage or are not combined with partial products removed from an intermediate storage to form the end product, rather the end product consists of (few) partial products that arise simultaneously without further the folding delivery of the rotary machine can be removed. With regard to such cases, a switch arrangement indicated at 13 is provided, which makes it possible to redirect the strand to the folding delivery of a conventional type. In this case, the cross cutter 12 can operate as a disintegrator driven in the machine cycle, the resulting partial products being able to be collected, folded and laid out in the manner usual up to now. Conversely, this means that it is possible, in addition to its conventional function, to control the cross cutter of today's folding deliveries, which works as a cutter, in such a way that the strand is cut only for the purpose of changing the strand reel against an empty winding core.

4, the web material 2 printed at 1 is cut by means of a separating knife 3 into four partial webs 21-24, which are guided over bars 6 of the folder and fed to the strand outlet 7 lying on top of one another (unfolded). Again, the multiple strand 200 is wound onto a driven winding core 10 to form a strand winding. The strand cross section of strand 200 corresponding to FIG. 4 is shown in FIG. 5a. 5b shows the strand cross section in the case of double use, the web material 2 not being divided into four, but into two partial webs. With the exception of the winding of the strand, which is composed in one way or another, the above-mentioned processes are again known.

Overall, it follows from the previous explanations that the printing press can run at the maximum possible printing speed, since the strand formation and the winding of the strand do not in any way have to take place more slowly. The time saved with less effort is evident.

This is shown even more impressively with reference to FIG. 6, which shows an unwinding device 14 set up for receiving two winding cores. The unwound strands 15 and 16 are combined by means of a junction 17 and then separated by means of a cross cutter 18 working as a cutter into the desired end product 20, which can be fed in a known manner to the necessary final operation (folding, cutting, etc.). On the one hand, it is understood that the unwinding device can accommodate any number of cores, and any number of partial products can be combined to form an end product. On the other hand, it is also understood that a plurality of unwinding devices can be provided, so that the production capacity when providing the end products is in no way inferior to the production capacity of the rotary printing press when providing printed strands.

It should also be pointed out that not only identical but different types of sub-products can be combined to form an end product, the “strand” 15 according to FIG. 6 being a foreign product; in this way one could e.g. Feed cover sheets or adhesive labels or cards that are transferred to strand 16 when they are brought together.

As before, the partial webs can often be marked, which also results in a marking for strands. This makes it easier to bring the strands together, possibly with adhesive labels, inserts, etc. In any case, the cross cutter can be controlled using the markings.

Claims (1)

Claims 1.Device with a rotary printing machine for the production of multi-sheet folded printed products from printed web material (2), which after printing still contains the printed pages of the products side by side next to one another or in succession, the web material being cut in by longitudinal folds and / or cuts Partial webs (21, 22) is subdivided and from these led to the delivery of the printing press, the partial webs (21, 22) are formed into strands (201, 202, 200) containing layers one above the other, which can be broken down into partial products by cross sections that a winding device (9) with exchangeable winding cores (10) is arranged downstream of a strand guide (7) and a controllable cross cutter (12) is connected upstream thereof, and that at least one unwinding device (14) set up to accommodate at least two winding cores (10) is provided, following ei ne merger (17) for the processed 5 10th 15 20th 25th 30th 35 40 45 50 55 60 65 3rd 5 CH 684 637 A5 A cross cutter (18) which can be controlled as a separator is arranged. 2. Device according to claim 1, characterized in that the cross cutter controllable as a splitter (18) can be controlled by means of markings placed on the partial webs (21, 22) or strands (201, 202, 200). 3. Device according to claim 1 or 2, characterized in that the strand guide (7) of the printing press can optionally (13) on its delivery for folding production or on the winding device (9) is switchable. 4. Device according to claim 3, characterized in that the cutting cylinder of the folder is either driven in time with the rotary printing press or independently of it as the winder device (9) upstream cross cutter (12) can be driven, the strand running off the cutting cylinder by means of a switch arrangement (13) is switchable in the direction of the winding device (9). 5. Use of the device according to any one of claims 1-4 for the manufacture of folded partial products and for the formation of end products in the form of collected, collected or nested partial products. 5 10th 15 20th 25th 30th 35 40 45 50 55 60 65 4th