DE102008021318A1 - Device for finishing and punching - Google Patents

Abstract

The device for finishing and punching printed sheet-like materials has at least one finishing station and a stamping station. The sheet material is transported by transport devices through the individual stations. The finishing station is designed as a cold foil module and has a first adhesive work and a second transfer work.

Description

The The present invention relates to an apparatus for refining and Punching of printed sheet materials according to the Preamble of claim 1.

To belongs to the known types of finishing in the printing industry u. a. the so-called hot foil stamping.

Mirror-smooth surface elements in gold, silver, copper, aluminum and metallic colors can be transferred to the substrate in hot foil stamping. A carrier film is coated with the coloring layer and a hot-melt adhesive (adhesive layer). Under pressure and heat, the picture can be surmounted with a heated cliché (high pressure form). Suitable machines are printing machines for high pressure and Flachhubstanzen. Hot foil stamping is primarily used in a wide variety of sheet products, such as cosmetics, confectionery and beverage packaging, as well as in brochures ( Helmut Kipphan, Handbook of print media, Springer Verlag, ISBN 3-540-66941-8, p 119 ).

From the DE 10 2006 015 474 A1 a device is known which uses the so-called cold foil stamping as a finish.

At the Cold foil stamping becomes a transfer layer of a substrate transferred to a substrate.

When Carrier material is a carrier film used. On this carrier film, a paint layer is applied, in particular for coloring the transfer layer responsible for. Connected to the paint layer is an aluminum layer, which causes the metallic gloss of the transfer layer. Next can provided on the aluminum layer still another adhesive layer be the adhesive properties of the transfer layer with the adhesive improved on the substrate. The layers that transfer from the substrate become, is called transfer layer.

In order to a transfer of the transfer layer carried on the substrate can, the substrate is provided with an adhesive layer before the film transfer, which corresponds to the area in which transfer layer is transferred shall be.

To transfer the transfer layer on a substrate is the transfer film passed through a transfer nip along with the substrate. The transfer nip is through a transfer cylinder and an impression cylinder formed, which abut each other. Transfer cylinder and impression cylinder are rotated together with a force that in the Transfer nip the transfer layer is transferred to the substrate.

When Glue can be a colorless glue, a glue with a specific one Own color or even colored according to the slide Glue be used. Already from the Bronzierungstechnik it is already known, for transferring metal particles one to use a particularly sticky color, the coloring of which corresponds to desired metallization. In that sense, of course Alternatively to a colored adhesive also a sticky Color to be used.

at The transfer layer may essentially be a metal layer but also to act on other layers. For example, an aluminum layer Be provided as needed on a yellow / golden lacquer layer or a silver-colored lacquer layer is applied.

Of Furthermore, as a transfer layer and a colorless layer z. B. of PE film can be used, which is transferred to the substrate will, that she forms a protective layer there.

As punching the cutting is referred to as closed, geometric blank forms that can be circular, oval or polygonal as well as fantasy shapes of all kinds. The punching takes place against a punching pad or against punches, in some cases it is also shearing operations (cf. Postpress, training manual for bookbinders, Bundesverband Druck e. V. 1996, page 351 ff. ).

packaging materials Made of paper, cardboard, cardboard or corrugated cardboard are mainly punched in sheet format. During the punching process can additionally but also crease lines or blind embossing in the benefits be introduced. This complex process makes it indispensable to punch the sheets individually. Since it is the end products to sophisticated packaging in terms of technical and graphical Executions (such as packaging for cosmetics, Cigarettes, pharmacy, food etc.), special requirements are not only to the packaging materials themselves, but it is For optimum results also punching tools with the lowest Tolerances and extremely precise and reliable working punching machines required.

Flatbed punching best meets these demands. The printed sheets stacked on a pallet are fed to the parent machine. In the machine, the separation takes place in a separating device the sheet to be punched, which then then aligned accurately aligned in an alignment, taken from a gripper carriage and positioned exactly in the punching device between a fixed undercounter and a vertical over a toggle lever or eccentric upper table. Such a flat bed punch is for example from the DE 30 44 083 A1 known.

The Both tables are equipped with cutting and scoring tools or equivalent Counter tools equipped with those from the intermittent between the Table surfaces guided arches the benefits punched out and at the same time necessary for clean folding Grooves are pressed. In the following breakout device the waste is removed by machine tools. Depending on the equipment of the machine can eventually the punched benefits in a designated benefit separation device be separated.

task It is the object of the present invention to provide an alternative device for finishing and punching printed sheet-shaped materials to accomplish.

These Task is solved by an inventive Device with the characterizing features of claim 1.

In an advantageous embodiment is between investor and flat bed punch introduced a finishing module as an additional station. The finishing module is configured as a cold foil module and has a first gluing plant and a second transfer plant.

In In a particularly advantageous embodiment, the adhesive work as Offset printing or coating unit formed.

In A preferred embodiment is the transfer mechanism also designed as offset printing or coating unit and has a Unwinding and winding device for the film.

In In a particularly preferred embodiment, the first and / or the second transfer work order-dependent or switched off. This has the particular advantage of having the same device for different orders with each optimal production speed depending on the order can be. If an order is processed without finishing, can Glueing and transfer unit are switched off. The bows then just run through these works without being edited. Should the bow still be provided with a special imprint, so will only switched off the transfer work. The sheet can then be used as an offset printing unit designed first gluing with printing ink instead of glue be provided.

Regarding Further advantageous embodiments of the invention is based on the Dependent claims and the following description of a Embodiment with reference to the accompanying Drawing referenced. In the drawing shows

1 a device for finishing and stamping according to the present invention in a schematic side view

In the 1 is an apparatus for finishing and punching sheet materials made of paper, cardboard and the like, as can be used in particular in the production of paper or cardboard blanks shown. In 1 the following stations in the direction of passage X lying behind one another are shown schematically: an inserting and separating device 1 , a finishing module 20 with a glueing system 21 and a transfer work 23 , an alignment device 2 , a punching device 3 , a breakout device 4 , a utility storage facility 5 and a separation sheet feeder 6 , Furthermore, at the utility storage facility 5 a pallet station 7 intended.

In the loading and separating device 1 The sheets to be processed are provided stacked and from the stack via a suction head 8th taken individually from above and onto a conveyor belt 9 filed, which the bow the Klebwerk 21 supplies.

When processing endless webs is used instead of the loading device 1 a unwinding, possibly with subsequent cross cutters used.

In the following adhesive work 21 , Which is advantageously designed as an offset printing or coating unit, at least partially adhesive is applied to the substrate, in the areas where the transfer layer is to be transferred to the substrate later.

This happens in the following transfer work 22 , This has a foil transfer cylinder 23 and an impression cylinder 24 on. The foil transfer cylinder 23 is so at the impression cylinder 24 employed that a transfer gap is formed between the two. The printing material is together with the transfer film 25 that have an unwinding device 26 is fed through the transfer gap. Here then dissolves in the places previously in the gluing plant 21 have been provided with adhesive, the transfer layer and is transferred to the substrate. Subsequently, the carrier film 27 via a take-up device 28 wound.

The printing material is via a transport device shown only schematically 29 the alignment station 2 where, for example, it is precisely aligned with side and front marks at three points. Thereafter, the aligned sheet is in the alignment station 2 from a gripper of a transport system, of which in the drawing, only the transport chain 10 is shown, which clocked the arc and precisely aligned by the other processing stations 3 . 4 . 5 . 6 leads.

The alignment station 2 downstream is the punching device 3 , which a firmly attached to the machine frame G under table 11 and a vertically movable upper table 12 having. In doing so, the upper table carries 12 a punching knife and the undercounter a punching counter plate.

The operation of the upper table 12 takes place in the usual way by means of an eccentric gear 14 , which is connected via a search bar gear not shown with a central drive of the punching machine, which also drives the other processing stations.

Behind the punching device 3 is the breakout device 4 provided in which the resulting during the punching process, unnecessary pieces of waste are pushed out of the sheet down out, making these pieces of waste in a below the breakout 4 inserted, container-like car 15 fall.

The breakout device 4 Below is the depositing device 5 provided, in which the sheet is either simply stored or at the same time there is a separation of the individual benefits, separation tools can not be used here type shown. The sheets can be stored here on pallets and stacked, which in the pallet station 7 are accommodated, so that after reaching a certain stack height, the pallet can be moved away with the stacked sheets from the field of punching machine.

1

working- and singulator

2

straightener

3

punch

4

Ausbrecheinrichtung

5

Benefits depositing device

6

Separating arc Zufihreinrichtung

7

pallet station

8th

suction head

9

conveyor belt

10

transport chain

11

under table

12

overtable

14

eccentric

15

dare

20

finishing module

21

Klebwerk

22

transfer unit

23

Foil transfer cylinder

24

Impression cylinder

25

transfer film

26

unwinding

27

support film

28

rewinder

29

transport device

X

Throughput direction

G

machine frame

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102006015474 A1 [0004]
• - DE 3044083 A1 [0014]

Cited non-patent literature

• - Helmut Kipphan, Handbook of Print Media, Springer Verlag, ISBN 3-540-66941-8, p. 119 [0003]
• - Print finishing, training manual for bookbinders, Bundesverband Druck e. V. 1996, page 351 et seq. [0012]

Claims (5)

Device for finishing and punching printed sheet-like materials with at least one finishing station ( 20 ) and a punching station ( 3 ) and a transport device ( 9 . 10 . 29 ), which transports the sheet material through the individual stations, characterized in that the finishing station ( 20 ) is formed as a cold foil finishing module, with a first adhesive bond ( 21 ) for applying adhesive to the sheet material and a second transfer unit ( 22 ) for transferring the finishing layer to the sheet material. Apparatus according to claim 1, characterized in that the punching station ( 3 ) is designed as a flat bed stamping station. Apparatus according to claim 1, characterized in that the first adhesive bond ( 21 ) is designed as a commercial offset printing unit or coating unit. Device according to one of the preceding claims, characterized in that the second transfer unit ( 22 ) is designed as a commercial offset printing unit or coating unit with a film feed and a Folienaufwickelvorrichtung. Device according to one of the preceding claims, characterized in that the first adhesive bond ( 21 ) and / or the second transfer work ( 22 ) can be switched on or off depending on the order.