DE102008039268A1 - Satellite printing unit has impression cylinder and multiple transfer cylinders arranged around impression cylinder, where plate cylinder is arranged at each transfer cylinder - Google Patents

Abstract

The satellite printing unit (1,2) has an impression cylinder (5) and multiple transfer cylinders (3) arranged around the impression cylinder. A plate cylinder (4) is arranged at each transfer cylinder, and a damping unit (7) applies damping medium on the plate cylinder. An inking unit (6) is provided, which applies ink on the plate cylinder. The damping unit and the inking unit are arranged mirror symmetric relative to a plane (8) running through the impression cylinder perpendicular to the assembly plane of the satellite printing unit.

Description

The The invention relates to a satellite printing unit having at least one Impression cylinder and a plurality of transfer cylinders arranged around the impression cylinder, being on each transfer cylinder at least one forme cylinder is arranged and at least one dampening unit and one inking unit apply dampening solution and paint to the forme cylinder.

In contrast, the compact printing machines known on the market are constructed as a rubber-rubber arrangement. In 1 For example, two printing units of a compact printing press are shown. In a rubber-rubber arrangement of the printing unit, the web to be printed is printed on both sides in perfecting. To ensure a two-sided four-color printing (4/4), the inking of four superimposed pressure points with different colors (black, magenta, cyan and yellow) are occupied.

All four on top of each other lying inking units are identical. To equality in the inking to reach are the arrangements of the four superimposed cylinder groups also identical in bridge arrangement executed.

The Arrangement of the cylinder groups in bridge construction has the disadvantages that in the wet offset method to compensate for the fanout (width expansion the paper web due to fountain solution entry) before the inlets in the second, third and fourth rubber-gum gap fanout compensation must be installed. Furthermore need the transfer cylinders due to the large distance each other for the purpose of cleaning a single washing device, so that in the present case per print page in each case two washing devices must be provided.

Of the The inventor has therefore set itself the task of a satellite printing unit to disposal to provide, which can be executed as a compact printing unit and in the at the same time the fanout effect occurs to a lesser extent or not at all.

These Task is by a satellite printing unit according to claim 1 solved.

Of the The inventor has recognized that a satellite printing unit due to the cheap Arrangement of the transfer cylinder less or not at all tends to Fanouteffekt. It also allows one special symphatic arrangement of the inking and / or dampening units the use of identical inking and dampening components and thus a compact and modular satellite printing unit.

Out Based on the findings, the inventor proposes a satellite printing unit at least one impression cylinder and several around the impression cylinder arranged transfer cylinders, being on each transfer cylinder at least one forme cylinder is arranged and at least one dampening unit and apply an inking unit dampening solution and paint to the forme cylinder, to improve that the dampening and / or inking in terms of one through the impression cylinder perpendicular to the installation level the satellite printing unit extending plane mirror symmetry are arranged.

hereby can the one above the other lying inking units and / or dampening units are identical, what in case of repair the compatibility and thus the interchangeability of components of the inking and / or dampening. at The H-type cylinder arrangement can have two transfer cylinders lying one above the other due to the small distance to each other with a double washing bar getting cleaned.

It is advantageous, the satellite printing unit as a 9-cylinder satellite arrangement perform. With two on top of each other arranged 9-cylinder satellite arrangements can thus on very compact space a two-sided four-color printing (4/4) become.

alternative to the 9-cylinder satellite arrangement, the satellite printing unit Also be designed as a 10-cylinder satellite arrangement. A paper web wraps around partially two impression cylinders, wherein the dampening and / or Regarding the inking units one perpendicular through the connecting plane of the two impression cylinders extending plane are arranged mirror-symmetrically. Here too can by the symmetrical structure identical inking and / or dampening or inking and / or dampening components are used.

It is beneficial if the distances the arranged around the impression cylinder transfer cylinder from each other are different. Closely adjacent transfer cylinders act positive about the fanout effect. Furthermore, depending Satellite printing unit at least one satellite washing device be arranged with the satellite washing device in place the largest distance two adjacent impression cylinder is arranged.

Alternatively or additionally, it is favorable if at least one washing device is arranged for the transfer cylinders. The wash before direction should be carried out or arranged such that two surfaces of two adjacent transfer cylinders can be cleaned. As a result, the number of washing devices can be significantly reduced.

Around with the new satellite printing unit different types of printing presses To equip high circulation numbers, it is advantageous if the bale length of the Impression cylinder, the transfer cylinder and the forme cylinder of a length of four, six, eight, or ten pending or recumbent newspaper pages equivalent.

alternative to that, the bale length can be the impression cylinder, the transfer cylinder and the forme cylinder of a length of five, seven or nine standing or lying newspaper pages.

preferred Further developments of the invention will become apparent from the following Description. An embodiment The invention will be described by, but not limited to, with reference to the two drawings explained in more detail. there shows:

1 Two known printing units in rubber-rubber arrangement;

2 : Two satellite printing units.

Hereinafter, the present invention will be described with reference to FIGS 1 and 2 described.

The 1 shows two stacked printing units 1 and 2 from the prior art. The printing units 1 and 2 each consist of two pressure points, which are executed here in rubber-rubber arrangement.

In each case of the inking units 6 and the dampening plants 7 Paint and dampening solution on printing plates or sleeves, not shown, on the form cylinder 4 transfer. From the form cylinders 4 The printed image is printed on the blankets, blanket plates or sleeves of the transfer cylinder 3 transferred and from there to the printing material, not shown.

An in 1 From bottom to top running to be printed substrate web can be printed on both sides in perfecting. Are the inking units 6 If the printing areas on top of each other are covered with different colors, double-sided printing on both sides (4/4) can be guaranteed.

As mentioned above are arranged in compact printing machines in the printing unit structure described above inking 6 constructed identically to achieve a modular design and, for example, to replace identical components easier in case of repair.

One Disadvantage of the rubber-rubber arrangement just described is the Fanouteffekt. The printing material web, usually paper, learns through the Dampening agent entry an undesirable Wide expansion.

Thereby arise so-called Passerdifferenzen, which usually by Additional equipment must be compensated. For example, the Fanout effect in the press due to precisely adjustable register pins and by support and electronic regulation of the railway can be significantly reduced.

2 shows an arrangement of two new satellite printing units 1 and 2 , Both satellite printing units 1 and 2 are designed as a 9-cylinder satellite. Relatively centered in the printing unit 1 and 2 is an impression cylinder 5 arranged in this embodiment of four transfer cylinders 3 is surrounded. The printing material web, not shown, wraps around the impression cylinder 5 almost completely and is each of the transfer cylinders 3 covered with paint.

At every transfer cylinder 3 is at least a form cylinder 4 arranged and at least one dampening unit 7 and an inking unit 6 transfer the dampening solution and the paint to the forme cylinder 4 ,

The special feature of the arrangement of the dampening units 7 and the inking units 6 is that these with respect to a through the impression cylinder 5 perpendicular to the installation level of the satellite printing unit 1 and 2 extending level 8th are arranged mirror-symmetrically.

1

First printing unit

2

Second printing unit

3

transfer cylinder

4

form cylinder

5

Impression cylinder

6

inking

7

dampening

8th

level

Claims (8)

Satellite printing unit ( 1 . 2 ) with at least one impression cylinder ( 5 ) and several around the impression cylinder ( 5 ) arranged transfer cylinders ( 3 ), wherein at each transfer cylinder ( 3 ) at least one forme cylinder ( 4 ) arranged is and at least one dampening unit ( 7 ) and an inking unit ( 6 ) Dampening solution and paint on the forme cylinder ( 4 ), characterized in that the dampening units ( 7 ) and / or the inking units ( 6 ) with respect to a through the impression cylinder ( 5 ) perpendicular to the installation level of the satellite printing unit ( 1 . 2 ) level ( 8th ) are arranged mirror-symmetrically. Satellite printing unit according to claim 1, characterized in that that the satellite printing unit as a 9-cylinder satellite arrangement is constructed. Satellite printing unit according to claim 1, characterized in that the satellite printing unit as a 10-cylinder satellite arrangement with two counter-pressure cylinders ( 5 ), whereby the dampening units ( 7 ) and / or the inking units ( 6 ) with respect to a perpendicular through the connecting plane of the two impression cylinders ( 5 ) extending plane are arranged mirror-symmetrically. Satellite printing unit according to one of the preceding claims 1 to 3, characterized in that the distances around the counter-pressure cylinders ( 5 ) arranged transfer cylinder ( 3 ) are different from each other. Satellite printing unit according to claim 4, characterized in that per satellite printing unit ( 1 . 2 ) at least one satellite washing device is arranged, wherein the satellite washing device is arranged at the location of the greatest distance between two adjacent impression cylinders. Satellite printing unit according to one of the preceding claims 1 to 5, characterized in that at least one washing device for the transfer cylinders ( 3 ) are arranged, wherein the washing device is arranged such that two surfaces of two adjacent transfer cylinders ( 3 ) are cleanable. Satellite printing unit according to one of the preceding claims 1 to 6, characterized in that the bale length of the impression cylinders ( 5 ), the transfer cylinders ( 3 ) or the form cylinder ( 4 ) corresponds to a length of four, six, eight or ten standing or lying newspaper pages. Satellite printing unit according to one of the preceding claims 1 to 6, characterized in that the bale length of the impression cylinders ( 5 ), the transfer cylinder ( 3 ) and the form cylinder ( 4 ) corresponds to a length of five, seven or nine standing or lying newspaper pages.