EP2722141B1 - Device for a flat bed punch and method for feeding a web to be printed - Google Patents

Description

The invention relates to a device for introducing a printing material web according to the preamble of claim 1, a production system for producing packaging according to claim 7 and a method for feeding a printing material web according to claim 8.

State of the art

Punching is defined as cutting with self-contained geometrical shapes, which can be circular, oval or polygonal as well as fantasy shapes of all kinds. The punching takes place against a punching pad or against a 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. As the final products are sophisticated packaging in terms of technical and graphic design (special packaging for cosmetics, cigarettes, pharmaceuticals, food, etc.). special requirements are not only placed on the packaging materials themselves, but also punching tools with the smallest tolerances and extremely precise and reliable punching machines are required for optimum results. Flatbed punching best meets these demands. In this case, in the case of sheet processing, the printed sheets stacked on a pallet are fed to the punching machine. In the case of web processing, the printing material web is fed via infeed rollers or feed rollers to the flatbed punch. In order to be able to process the printing material web at standstill, the printing material web in the flatbed punch is iteratively stopped by temporarily storing the following web in a web store with a dancer roll.

In the EP 2 080 600 A1 a flat bed punching module for punching a printing material is disclosed, with an upper crucible and a saucer, wherein the saucer by means of a drive relative to the frame-fixed upper crucible for performing a punching stroke for punching the passing between the upper crucible and the saucer printing substrate is movable. As a result, the saucer is employed on the upper crucible, and the printing material is processed by means of at least one punching tool. The flat bed stamping module has a printing material transport device for guiding the printing material, which is firmly held on the movable saucer. The flatbed punching module can be used in a flat bed punch for processing a printing material web and contribute to a stable web run.

For cost and environmental reasons, the desire is to get along with the least possible waste in the production of the above-mentioned packaging materials in printing press and flatbed punching machine.

In order to meet the high quality standard, the web material is first driven by a rewinder or by hand winding from the machine when approaching inline to each other arranged printing machines and flat bed punches before the web material is fed to the flatbed punch. This serves to vaults, the z. B. may arise due to guide rollers at standstill of the printing machine to remove before the punching operation in the flatbed punch, and thereby avoid material jams when entering the flat bed punch. After this operation, a machine operator in prior art machines must stop the printing machine again, cut off the web material upstream of the rewinder by a cross section, and then manually feed the flatbed punch. The repeated stopping of the printing press for feeding the material web to the flatbed punch results in waste again, so that the first die cut punch leaving the flat bed punch usually can not yet be used.

task

The object of the present invention is therefore to provide a device for introducing a printing material web and to describe a method for feeding a printing material, which when starting a Flachbettstanz- and / or embossing machine or a Fertigungssytems with a web press and a Flachbettstanz- and / or embossing machine to significantly reduce waste and simplify their handling during startup.

This object is achieved by a device for introducing a printing material web with the features of claim 1. The inventive device for introducing a printing substrate, in particular paper or cardboard, in a Flachbettstanz- and / or embossing machine has a compensator, the continuous web movement of the Converts substrate in an iterative trajectory movement. According to the invention, the device for insertion has a clamping unit for clamping the printing material web and a cutting unit for carrying out a cross section through the printing substrate, wherein a cross-sectional edge is formed, and further has an insertion unit for transporting the printing material with the cross-sectional edge ahead in the Flachbettstanz- and / or - embossing machine , The device thus advantageously permits automatic clamping, cutting and feeding of the printing material web into the flat-bed punching and / or embossing machine. This can be dispensed with a further stop the upstream printing machine and waste can be reduced. Another advantage results from the fact that no machine operator must be available for feeding the printing material web and the introduction of the printing material web can be accelerated in the Flachbettstanz- and / or - embossing machine.

In an advantageous development of the device according to the invention for introducing a printing material web, the insertion unit has a gripper unit for gripping the printing material web, at least one guide track and a drive associated with the gripper unit. The gripper unit is displaceable on the at least one guideway and is moved by the drive.

In a first embodiment, the clamping unit and the gripper unit can be designed as an assembly, which allows a compact and inexpensive construction.

In an advantageous development of the device according to the invention for introducing a printing material web, this has an auxiliary winder, wherein the auxiliary winder is arranged downstream of the compensator and serves to wind up the printing material web.

In a particularly advantageous and therefore preferred development, the clamping unit, the cutting unit and the insertion unit between the compensator and the Flachbettstanz- and / or embossing machine are arranged. This makes it possible that the cross section is performed by the cutting unit on a stationary printing material.

In an advantageous development, the cutting unit has at least one knife and a counter element interacting with this at least one knife, wherein the at least one knife and the counter element extend over the width of the printing material web.

The invention also relates to a production system for the production of packaging, in particular of paper or cardboard and in particular of folding cartons from a printing material web, with a web-fed printing press, with a downstream arranged for insertion device according to one of the preceding claims and with a further downstream arranged Flachbettstanz- and / or embossing machine.

The invention also relates to a method for feeding a printing material web in a production system for producing packaging, in particular as described above from a web-fed printing press to a flatbed punching and / or embossing machine by means of a device for introducing during operation of the web-fed printing press as described above , This is done in a first Step on winding the printing material web onto an auxiliary winder. In a second step, a compensation movement of a Bahnleitelements for a temporary web standstill is generated, for example, by a compensator with dancer roller. Then the printing material web is clamped with a clamping unit and there is a cross section through the substrate web, wherein a cross-sectional edge is formed. In a subsequent step, an automatic introduction of the printing material web with the cross-sectional edge ahead takes place in the flat-bed punching and / or embossing machine.

Also by the method according to the invention listed above advantages of low waste and easy feeding of the substrate web realized.

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 an embodiment with reference to the accompanying drawings.

embodiment

Figur 1

eine Flachbettstanzmaschine mit einer erfindungsgemäßen Einführvorrichtung

Figur 2

die Einführvorrichtung in einer Detailansicht

Figur 3

eine alternative Ausführungsform der Einführvorrichtung

The invention will be explained in more detail with reference to a preferred embodiment. In a schematic representation:

FIG. 1

a flat bed punching machine with an insertion device according to the invention

FIG. 2

the insertion device in a detailed view

FIG. 3

an alternative embodiment of the insertion device

Corresponding elements and components are provided in the figures with the same reference numerals.

The FIG. 1 shows a schematic view of a flat bed punch 10 according to the invention, which is part of a manufacturing system 100. The illustrated embodiment of the flatbed punch 10 with a flat bed punching module 12 is modular in horizontal construction. The processing of a printing substrate 24, for example, printed from a web-fed printing machine 8 on a board web folding cartons takes place in this view from right to left: Coming from a web inlet part 14 reaches the substrate web 24 in the web direction B in the flat bed punching module 12, in which the substrate web 24 through a lifting movement H of an equipped with punching knives saucer 28 is cut against a top bar 26 such that in subsequent processing steps for a single sheet separated from the printing material 24 and on the other individual printed products from the printing material 24 broken and separated from each other. The separation into individual sheets already takes place at the outlet of the flatbed punching module 12. The separated sheets are conveyed in a breakout unit 18 and a pay dividing unit 20 via a transport unit 16 arranged downstream in the flatbed punching module 12, in which the printed products are separated from the cut and separated. The printed products are then laid out in a product display 22. Directly upstream of the flat-bed punching module 12, an insertion device 30 according to the invention for inserting the printing material web 24 is arranged in the flat-bed stamping module 12, which is based on the FIG. 2 is described in more detail:

The printing substrate 24 runs from a web-fed printing machine 8 coming in web direction B on different rollers, a train group 40 and acting as a web memory compensator 31 in the flatbed 10. If a processing job is set up new, or if there is waste due to machine stops in the upstream web printing machine comes, the printing substrate 24 is not performed directly in the flatbed punch 10, but previously wound on an auxiliary winder 35. As soon as all waste paper-containing sections of the printing material web 24 are wound on the auxiliary winder 35, the printing material web 24 can be introduced into the flatbed punch 10. This is done with the aid of the insertion device 30 according to the invention. For this, the printing material web 24 in a clamping unit 32 clamped and thus kept defined. Thereupon, a cutting unit 33 can execute a cross section as a separating cut through the printing material web 24. While the auxiliary winder 35 can continue to wind up the wasteful end of the printing material web 24, the wastepaper web 24 coming from the web press 8 is guided with its cross-sectional edge ahead into the flatbed punch 10 by means of an insertion unit and its gripper unit 34.1. The gripper unit 34: 1 is moved by a drive 34.3 on a guideway 34.2 in the web running direction B and passes the printing material 24 with its cross-sectional edge ahead on insertion rollers 36 of the flat bed punch 10. After successful handover, the gripper unit 34.1 moves on the guideway 34.2 back to its original position , which is in the immediate vicinity of the clamping unit 32 and the cutting unit 33, and where the transfer of the printing substrate 24 from the clamping unit 32 to the gripper unit 34.1 of the insertion unit 34 takes place.

In FIG. 3 an alternative embodiment of the introducer 30 is shown. While in accordance with in FIG. 2 1, the clamping unit 32 and the cutting unit 33 on the one hand and the gripper unit 34.1 of the insertion unit 34 on the other hand are designed as separate units and assemblies, the clamping unit 32 and the gripper unit 34.1 according to the embodiment of FIG. 3 as an assembly. After the separation section has been cut by the cutting unit 33, the printing material web 24 remains clamped by the clamping unit 32, which is gripper unit 34.1 at the same time, and is moved by this assembly through the drive 34.3 on the guide track 34.2 in the web running direction B and fed to the flatbed punch 10.

LIST OF REFERENCE NUMBERS

8th

Position printing machine

10

Diecutter

12

Flatbed punching module

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

introducer

31

Compensator / web storage

32

terminal unit

33

cutting unit

34

insertion unit

34.1

gripper unit

34.2

guideway

34.3

drive

35

Hilfsaufwickler

36

infeeding

40

traction group

100

manufacturing system

H

punching stroke

B

Web direction

Claims (9)

1. Device (30) for inserting a web (24) of printing material, in particular made of paper or board, into a flat-bed die-cutting and/or embossing machine (10) comprising a compensator (31) that converts a continuous movement of the web (24) of printing material into an iterative movement,
   characterized in
   that the device (30) for inserting includes a clamping unit (32) for clamping the web (24) of printing material,
   a cutting unit (33) for carrying out a cross cut through the web (24) of printing material, creating a cross cut edge, and
   an inserting unit (34) for transporting the web (24) of printing material cross cut edge first into the flat-bed die-cutting and/or embossing machine (10).
2. Device for inserting according to claim 1,
   characterized in
   that the inserting unit (34) includes a gripper unit (34.1) for gripping the web of printing material (24), at least one guide path (34.2) and a drive (34.3) associated with the gripper unit (34.1), the gripper unit (34.1) being displaceable on the at least one guide path (34.2) and moved by the drive (34.3).
3. Device for inserting according to claim 2,
   characterized in
   that the clamping unit (32) and the gripper unit (34.1) are embodied as one subassembly.
4. Device for inserting recited in any one of the preceding claims,
   characterized in
   that the device comprises an auxiliary wind-up device (35), the auxiliary wind-up device (35) arranged downstream of the compensator (31).
5. Device for inserting according to any one of the preceding claims,
   characterized in
   that the clamping unit (32), the cutting unit (33), and the inserting unit (34) are arranged between the compensator (31) and the flat-bed die-cutting and/or embossing machine (10).
6. Device for inserting according to any one of the preceding claims,
   characterized in
   that the cutting unit (33) includes a knife and a counter-element cooperating therewith, the knife and counter-element extending across the width of the web (24) of printing material.
7. Manufacturing system (100) for the production of packages, in particular made of paper or board, in particular for the production of folding boxes from a web (24) of printing material, comprising a web-fed printing press (8), a downstream device (30) for inserting as recited in any one of the preceding claims and a flat-bed die-cutting and/or embossing device (10) arranged even further downstream thereof.
8. Method for feeding a web (24) of printing material into a manufacturing system (100) for producing packages as recited in claim 7 from a web-fed printing press (8) to a flat-bed die-cutting and/or embossing machine (10) by means of a device (30) for inserting as recited in any one of claims 1 to 6 while the web-fed printing press (8) is in operation, comprising the steps of

   a) winding the web of printing material (24) onto an auxiliary wind-up device (35);

   b) moving a web-guiding element (31) in a compensatory way to achieve a temporary standstill of the web (24) of printing material;

   c) clamping the web (24) of printing material by means of a clamping unit (32),

   d) cross-cutting the web (24) of printing material, creating a cross cut edge;

   e) inserting the web (24) of printing material cross cut edge first into the flat-bed die-cutting and/or embossing machine (10).
9. Method for feeding according to Claim 8, wherein the standstill of the web (24) of printing material in accordance with step b) lasts at least until step c).

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