DD208112A1 - OFFSET PRINT UNIT - Google Patents

Abstract

The invention relates to an offset printing unit with split Seitenwaenden and three printing units for rubber-rubber printing. The invention aims to provide offset printing units for quality and newspaper printing, which are inexpensive to produce and allow the newspaper printing with high timeliness. The object of the invention is to cooperate with a printing unit in which two juxtaposed printing units and one of the two and a printing unit arranged above to create such Kombinationsfaehigkeit of the printing units that with a few printing blocks both printing units for single and multi-colored newspaper printing with good Zylinderzugaenglichkeit for the plate change as well as printing units for quality printing can be created. This is achieved by the stored with the upper printing unit in separate Seitenwaenden, which are releasably connected to the side walls of the other printing units.

Description

VEB Combined Polygraph

"Werner Lamberz" Leipzig -TFS Ma / r

'^ " P 145

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Offset printing unit Field of application of the invention:

The invention relates to an offset printing unit with divided side walls and three printing units for rubber-rubber printing. The invention is applicable in the field of rotary printing machine construction.

Characteristic of the known technical solutions:

It is an offset printing unit known in which two juxtaposed, each containing a plate and a transfer cylinder printing units work together in rubber-rubber principle. This double printing unit can be combined with a further printing unit containing printing unit module to a three-works printing unit. The latter printing block is set to the double printing, that his transfer cylinder is in contact with the Obertragungszylinder the right printing unit of the double printing unit.

The double printing unit is used for the 1 + 1 newspaper printing. With the three-works unit, a 2 + 1 and 3 + 0 newspaper printing is possible using direct lithographic printing. However, it is not possible to produce any quality pressure with the double printing unit. For this purpose, the printing machine

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make ready another printing block in the production program. This requires the production of a larger number of different printing blocks. Such a production is associated with increased costs.

There is also known an offset printing unit in which a working in rubber-rubber principle double printing for quality or newspaper printing with a printing unit containing a printing unit module can be combined. The printing units of the double printing unit are arranged one above the other. In the combination for three-works printing unit, the third printing unit is placed next to the upper printing unit of the double printing unit under plant his transfer cylinder on the transfer cylinder of the lower printing unit.

With the three-works printing unit, a 2 + 1 or with the aid of the direct planographic printing process a 3 + 0 newspaper print can be produced. When 2 + 1 newspaper printing but leaves the printing unit leaving the web access to the cylinder group of the overlying printing unit. A printing plate change is possible in this printing unit only after removing the paper web or in the presence of a tread surface arranged above the paper web in a kneeling position on the same. Furthermore, the web impedes access to the plate cylinder of the lower printing unit. Both the retraction of the material web and physically strenuous positions when changing the plate lengthen the machine downtime caused by the plate change, which ultimately adversely affects the newspaper printing on the timeliness of the printed product.

Object of the invention:

The invention pursues the goal of offset printing units

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for quality and newspaper printing to create, which are inexpensive to produce and allow the newspaper printing with high relevance.

Essence of the invention:

The invention is based on the object in an offset printing unit with divided side walls and three each containing a plate and a transfer cylinder printing units for rubber-rubber printing, of which two juxtaposed printing units and one of the two and a printing unit arranged above work together to create such a combination ability of the printing units that with a few printing blocks both printing units for one- and multi-colored newspaper printing with good cylinder accessibility for the plate change and printing units for quality printing can be created.

According to the invention the object is achieved in that the upper printing unit not in contact lower printing unit is mounted in separate side walls, which are detachably connected to the side walls of the other printing units. As a result, the press manufacturer can produce printing units for 1 + 1 or 2 + 1 quality printing or 1 + 1-, 2 + 1- or, using the direct planographic printing process, 3 + 0 newspaper printing from two printing unit modules. The printing unit modules can be manufactured inexpensively in a small variety and with economic quantities. Furthermore, jdie printing units are characterized by the newspaper printing by a good accessibility of the printing units. For a plate change no physically strenuous attitudes of the operators are required, so this is fast to carry out. This enables a reduction in the machine

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Downtimes and an increase in the actuality of the printed products.

Embodiment:

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawing shows schematically in side view

1: a three-works printing unit for Gumrni rubber

Pressure 110

Fig. 2: a two-works printing unit for rubber-rubber printing

The printing unit shown in Figure 1 includes 3 printing units I ₁ 2, 3, each containing a plate and a transfer cylinder 4 to 9. The printing units 1 and 2 are mounted in the side walls 10 and form with them a printing unit module 11. They are arranged one above the other and work together in the rubber-rubber principle. The printing unit 3 is combined with the side walls 12 to the printing unit module 13. This is attached to the printing unit module 11, and be

, Printing unit 3 cooperates with the printing unit 1. The side walls 12 are bolted to the side walls 10.

With the printing unit, a material web 14 or 15 for newspaper printing with 2 + 1 colors or a material web 16 also with 2 + 1 colors for quality printing

be printed. With direct printing of the printing unit 1 of the plate and a web 17 or 18 can be printed with 3 + 0 colors for newspaper printing.

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The printing unit according to Figure 2 consists only of the printing unit module 11 with the printing units 1 and 2. With the printing unit, a web 19 for newspaper printing or a web 20 for quality printing with 1 + 1 colors can be printed.

The presented printing units can also be strung together in printing machines. It is also possible to use printing units according to FIGS. 1 and 2 together in a printing machine. Furthermore, it is possible to equip the printing unit module 13 in the printing unit for printing units according to FIG.

Claims (1)

" ⁶ " 235641 3. Claim of invention: Offset printing unit with divided side walls and three each containing a plate and a transfer cylinder printing units for rubber-rubber printing, of which two juxtaposed printing units and one of the two and a superimposed printing work together, characterized in that the upper Printing unit (2) not in contact lower printing unit (3) is mounted in separate side walls (12) which are releasably connected to the side walls (10) of the other printing units (1; 2). For this 1 sheet drawings