EP2746007B1 - Manufacturing system and process with flat bed and a rotary die unit - Google Patents

Description

The invention relates to a manufacturing system for producing sheet-like elements according to the preamble of claim 1 as well as a method for operating a manufacturing system according to claim 7 or 8.

State of the art

As punching the cutting is referred to with closed geometric blank forms that can be circular, oval or polygonal and imaginary shapes of all kinds. Also the practices practiced in print finishing, such as punching with punch, corner punching and register punching are counted to this area. The punching takes place against a punching pad or against stamp, in some cases it is also shearing operations. Plastic packaging materials, film material, paper, cardboard, cardboard or corrugated board are mainly punched in sheet format but also in web format. When punching but also creasing lines or blind embossing can be introduced into the benefit. Since the end products are sophisticated packaging in terms of technical and graphic design (such as packaging for cosmetics, cigarettes, pharmacy, food, etc.), special requirements are not only placed on the packaging materials themselves, but are also punching tools for optimum results required with the smallest tolerances and extremely precise and reliable punching machines.
For this purpose, on the one hand flat bed punches are known, for example from the EP 2 080 600 A1 , In this case, the printing material is transported and processed in the punching device between a fixed upper table and a vertically movable via a toggle lever or eccentric lower table. Also known are machines in which the upper table is moved against a fixed lower table.

Due to the design, an uneven punching force distribution over the surface of the crucible is present in all flat bed stamping and embossing machines according to the prior art. The Punching force is introduced via individual force application points and thus does not affect the entire crucible surface. Depending on the rigidity of the crucible, there is a deformation of upper and lower table, which in turn results in an uneven punching pressure distribution over the surface of the crucible. Also height differences of the punching or Rillmesser, as well as the wear of the knife cause an uneven punching pressure distribution. The uneven punching pressure in turn causes an unclean cutting of the cutting blade of the punching tool.
In the prior art, this problem is solved by the punching blades are individually highlighted. Depending on the deviation from the nominal punching force, the punching knives on the back of the tool are glued behind with paper or plastic strips of various thicknesses. This so-called trimming is very time-consuming and must be done at machine standstill. Depending on the number of punching blades and the shape to be punched, trimming can take several hours. The high set-up time results in low machine productivity.

On the other hand, rotary punches are known, for example from the DE 10 2010 026 607 A1 which have at least two rotating tool rolls, which are easily replaceable. Rotary punches can advantageously be operated at high production speeds.
A disadvantage of rotary punches are the high acquisition and maintenance costs for the tools. Rotary punches can therefore be operated economically only for orders in medium to high runs.
A deactivatable rotary die is in the DE 691 13 613 T2 shown.

task

The object of the present invention is to provide a manufacturing system which reduces the disadvantages of the prior art and which is able to react flexibly to changing jobs and which can be operated with high productivity. Another object is to describe a method for operating such a manufacturing system.

This object is achieved by a production system with the features of claim 1. The manufacturing system according to the invention is used to produce sheet-like elements, in particular of paper, cardboard or composite material, wherein the sheet-like elements are in particular folding boxes or labels. The sheet-like elements are formed from a printing substrate. The manufacturing system has at least one Rollenabwickler, which may optionally be part of a web-fed rotary printing machine, a downstream arranged Flachbettstanz- and / or -prägestation and optionally a downstream arranged Nutzsevenstation and in turn downstream arranged product display on. According to the invention, the flatbed punching and / or embossing station can be deactivated. Furthermore, according to the invention, at least one rotary machining module is provided between flat-bed punching and / or embossing and the product display. If only one rotary machining module is present, then this is a rotary punching module. If several rotary machining modules are provided, then at least one of them is designed as a rotary punching module. By means of this design of the production system, it is advantageously possible for the sheet-like elements to be processed either by the flat-bed punching and / or stamping station or by a rotary punching module. The decision as to whether to work with the flatbed punching and / or embossing station or with the rotary punching module can be made either as a function of the batch size of the job to be processed, so that the more economical method can be selected. Or the rotary punching module can be used when the Flachbettstanz- and / or -prägestation deactivated and just set up for a new job. By skillfully planning the sequence of different jobs and using either the flat bed stamping and / or embossing station or the rotary die cutting module in the manufacture of the sheet-like elements, the productivity of the manufacturing system can be substantially increased.

In an advantageous development of the production system according to the invention, a further rotary processing module is designed as a breakout module. Alternatively or additionally, another rotary machining module can be designed as a creasing and embossing module.

In a particularly advantageous and therefore preferred development of the manufacturing system according to the invention the Flachbettstanz- and / or -prägestation an introducer is preceded by a compensator, wherein the compensator serves to convert a continuous web movement of the printing substrate in an iterative, intermittent web movement for a gradual movement of the printing material , In such a manufacturing system, the tools of the at least one rotary machining module may independently of job have a uniform diameter and in particular have carrier cylinders which are at least partially magnetic, for magnetically holding the tools. As a result, the purchase costs for the tools as well as the costs and the outlay for their storage can be reduced significantly in an advantageous manner.

In a particularly advantageous and therefore preferred embodiment of the manufacturing system according to the invention, at least one guide roller is provided upstream and downstream of the flat-bed punching and / or embossing station for redirecting the printing material web around the flat-bed punching and / or embossing station. In other words, the printing material web is not moved through between the lower and the upper crucible of the flat bed punching and / or embossing station, but is led from the upstream arranged roll unwinder or the web-fed rotary printing press directly via the guide rollers to the at least one rotary processing module.

The invention also relates to a method for operating a production system as described above, wherein the printing material web is fed in register by the flat bed stamping and / or embossing station to the at least one rotary processing module. For the register-accurate feed while the transport and Leiteinrichtungen the Flachbettstanz- and / or -prägestation be used.

In a further development of the method according to the invention, the printing substrate web is fed by the insertion device of the flat bed stamping and / or embossing station with an iterative, intermittent web movement to the at least one rotary machining module. The tools of the at least one rotary processing module and the printing material web are synchronized for processing relative to each other.

The described invention and the described advantageous developments of the invention are also in any combination with each other advantageous developments of the invention.

With regard to further advantages and constructive and functional advantageous embodiments of the invention, reference is made to the dependent claims and the description of exemplary embodiments with reference to the accompanying figures.

embodiment

Figur 1:

ein Fertigungssystem gemäß dem Stand der Technik

Figur 2:

ein Fertigungssystem in einer ersten Ausführungsform mit zwei rotativen Bearbeitungsmodulen

Figur 3:

eine zweite Ausführungsform eines Fertigungssystems mit drei rotativen Bearbeitungsmodulen

Figur 4:

eine dritte Ausführungsform eines erfindungsgemäßen Fertigungssystems mit einer Bahnumleitung

The invention will be explained in more detail with reference to accompanying figures. Corresponding elements and components are provided in the figures with the same reference numerals. In favor of a better clarity of the figures was waived a true to scale representation.
In a schematic representation:

FIG. 1:

a manufacturing system according to the prior art

FIG. 2:

a manufacturing system in a first embodiment with two rotary machining modules

FIG. 3:

a second embodiment of a manufacturing system with three rotary machining modules

FIG. 4:

a third embodiment of a manufacturing system according to the invention with a web redirection

FIG. 1 shows a schematic view of a manufacturing system 100 according to the prior art, which has a flat bed punch 10. The illustrated embodiment of the flat bed punch 10 with a flat bed punching module 12 is modular in horizontal construction. The processing of a printing substrate 24, for example, printed by a previous web press 8 on a board carton folding cartons takes place in this illustration from right to left: Coming from a web inlet part 14, the printing material 24 passes in the web running direction B via a Insertion device 13 with compensator in the flat-bed punching module 12, in which the printing material 24 is cut by a lifting movement H of a blank equipped with punching plates 28 against a top bar 26 such that in subsequent processing steps for a single sheet of the printing material 24 separated and on the other individual printed products , so-called benefits, broken out of the substrate web 24 and are separable from each other. The separation into individual sheets already takes place at the outlet of the flatbed punching module 12. The separated sheets enter a breakout unit 18 and a pay dividing unit 20 via a transport unit 16 arranged downstream of the flatbed punching module 12, in which the benefits are separated and singulated. The benefits are then laid out in a product display 22.

In the other Figures 2 . 3 and 4 each manufacturing systems 100 are shown according to the invention. In the in FIG. 2 illustrated embodiment of the manufacturing system 100, the flat bed punch 10 is disabled and does not punching stroke H from. Rather, the printing substrate 24, the flat bed punching module 12 pass between upper crucible 26 and saucer 28 unprocessed. Between the flatbed punch 10 and the Nutzentrenneinheit 20 with subsequent Produktauslage 22 is a mounting portion 30 for rotary tools 31, 32, 33. In this mounting portion 30 are shown in FIG FIG. 2 a rotary punching module 31 and a Rotationsausbrechmodul 33 arranged. A punching processing of the printing material web 24 thus does not take place in the flat-bed stamping module 12, but in the rotary punching module 31.

In the in FIG. 3 As shown in the alternative embodiment of the production system 100, the assembly area 30 was equipped with three rotary tools: With a rotary embossing module 32, a subsequent rotary punching module 31 and a rotation breaking module 33.

In contrast to the previously described embodiments of the manufacturing system 100 is in the in FIG. 4 illustrated manufacturing system 100, the printing substrate 24 is not passed through the flat bed punching module 12 therethrough. Upstream as well downstream of the flat-bed punching module 12, a guide roller 40 is arranged in each case. By means of the existing transport rollers of the insertion device 13 and at the outlet of the flatbed punch 10, the printing substrate 24 can be passed around the flat bed punching module 12 around. The redirection causes the printing material web 24 coming from the web inlet part 14 to be guided into the mounting area 13 for rotary tools 31, 32, 33, without passing through the working area of the flatbed stamping module 12. This allows the flatbed punching module 12 to be set up, for example, the machine operator removes and inserts the upper die and lower die of the flatbed punching module and performs trimming of the punching knives, while the production system 100 still operates productively.

LIST OF REFERENCE NUMBERS

8th

Position printing machine

10

Diecutter

12

Flatbed punching module

13

Insertion device with compensator

14

Web inlet part

16

transport unit

18

Fugitive unit

20

Blanking unit

22

product display

24

printing material

26

upper platen

28

lower platen

30

Mounting area for rotary tools

31

Rotary die cutting module

32

Rotary embossing module

33

Rotationsausbrechmodul

40

sheave

100

manufacturing system

H

punching stroke

B

Web direction / transport direction

Claims (8)

1. Manufacturing system (100) for manufacturing planar elements, in particular made of paper, board, or composite material, namely folding boxes or labels, from a web of printing material (24), including at least a web unwinding device, a flat-bed diecutting and/or stamping/embossing unit (10) arranged downstream thereof, and a product delivery (22) arranged downstream of the flat-bed diecutting and/or stamping/embossing unit (10),
   characterized in
   that at least one rotary processing module (31, 32, 33) for processing the web of printing material (24) is provided between the flat-bed diecutting and/or stamping/embossing unit (10) and the product delivery (22), at least one of the rotary processing modules (31, 32, 33) embodied as a rotary diecutting module (31), and that the flat-bed diecutting and/or stamping/embossing unit (10) is deactivatable, allowing the planar elements to be processed either by the flat-bed diecutting and/or stamping device (10) or by the rotary diecutting module (31).
2. Manufacturing system according to claim 1,
   characterized in
   that a further rotary processing module is embodied as a stripping module (33).
3. Manufacturing system according to any one of the preceding claims,
   characterized in
   that a further rotary processing module is embodied as a creasing and embossing module (32).
4. Manufacturing system according to any one of the preceding claims,
   characterized in
   that a feed device (13) including a compensator is provided upstream of the flat-bed diecutting and/or stamping/embossing unit (10) to convert a continuous web movement of the web of printing material (24) into an iterative web movement.
5. Manufacturing system according to claim 4,
   characterized in
   that the tools of the at least one rotary processing module (31, 32, 33) have a uniform diameter and in particular include at least partially magnetic carrier cylinders for holding the tools by magnetic force.
6. Manufacturing system according to any one of the preceding claims,
   characterized in
   that at least one respective guide roller (40) is provided upstream and downstream of the flat-bed diecutting and/or stamping/embossing unit (10) to deflect the web of printing material (24) around the flat-bed diecutting and/or stamping/embossing unit (10).
7. Method for operating a manufacturing system according to any one of claims 1-5,
   characterized in
   that the flat-bed diecutting and/or stamping/embossing unit (10) feeds the web of printing material (24) to the at least one rotary processing module (31, 32, 33).
8. Method for operating a manufacturing system according to at least one of claims 4-5,
   characterized in
   that the web of printing material (24) is fed to the at least one rotary processing module (31, 32, 33) by the feed device (13) in an iterative web movement and that the tools of the at least one rotary processing module (31, 32, 33) and the web of printing material (24) are synchronized relative to each other.

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