DE8327397U1 - Offset inking unit with a dampening unit for a rotary printing press with an ink fountain - Google Patents

Description

Koenig & Bauer AG '. ^: · '. · \\, ·. '. ·''.''. 1983-09-21

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Inking unit for a rotary printing press

Di «ftf indttn? concerns an inking unit for tin "ftotationedruck-Meehln" 9 «never the generic term dee claims 1.

By dl · CA PSS 496754 "has become known in offset inking _f in which four ink form" rolls for inking a · offset printing plate worry. A fiauptetrom is directed to two front _# and an Ifebenstroa to awei rear paint application columns.

The disadvantage of this arrangement is that it relies on a damp-water-containing Printing inks are one that does not contain any damp water Ink is not applied. I. E. on a brisk Printing ink not a less gentle one is applied. This usually results in sun stenciling.

From "Investigations of non-reactive paint application eyes in offset printing ", German Research Association for Druck und Reproduktionstechnik e.V., Research Report 3.230, May 1981, Fig. 8 and associated text passage, is an inking unit for a high-pressure rotary printing press old one Group of smoothing orphans become known, with a single application roller with a first roller of the smoothing roller group communicates.

The invention is based on the object of creating a method and inking unit for an offset rotary printing press, in which the color splitting behavior compared to the state of Technology is improved.

The object is achieved by the subject matter of the characterizing part of claim 1 and claims 5, 6, 7.

Koenig 6 Bauer AG. . . . ".. * ·.. ··, ·": 1983-09-21

The advantages that can be achieved with the invention consist in particular in the fact that the color is influenced in the inking unit can be. Be can be excluded in inking according to the invention be, dad to one or more purifying water containing Layers of paint a fresh layer of paint is applied and this promotes stenciling. It can be a paint layer application from. Layers of paint with approximately the same moisture content or - seen from the first paint application whale - Be guaranteed with increasing moisture content, eo that the splitting behavior in inking is optimized will.

Exemplary embodiments of the invention are shown in the drawing and are described in more detail below. Bs «own

Fig. 1 is a schematic side view of the invention Inking units,

Fig. 2 shows a variant of the inking unit according to Flg. 1.

Se in the process of splitting and building up a new layer of paint It is essential that as far as possible from orphaned ink application roller - in the direction of rotation of the plate cylinder seen - the speed decreased and thus the "Klebefähigkeif" the layers of printing ink are decreasing · So it must be an invention Sgern & ß ensure that the moisture content the printing ink increases from application roller to application roller. When building up a color film on the printing plate, the the bottom layer to the top - the "adhesiveness" of the paint layers decrease, d. H. the zfigigkeit of Remove layers of paint or at least remain approximately the same. Under no circumstances should a fresh color shimmer, such as B.

Koenig & Bauer AG. "." \ *. ·· .. ··. . ", ·": 1983-09-21

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in CA-PS 496 754, are performed on inking rollers, ik> dafi on «a less sinuous layer of paint, a layer of paint «Bit of a higher candy is applied. Found The following inking orphan orders are proposed

In the printing ink of an ink fountain 1 of a rotary printing press, a driven ink fountain roller is immersed in a known manner 2. Of the color box orphan 2, one pendulum-like Beber orphan swinging back and forth 3 fresh printing ink and hands it over to a plastic-coated color transfer whale 4, which is designed as a friction roller

from the paint overreaching roller 4, the paint flow leads to one Guani-coated Swisehenwalse 6, from this to one second plastic-coated friction roller 7, which is in contact with a second guami-coated intermediate roller 8. The wiper roller β gives a color film to a third plastic-coated one Distribution roller 9 from «This distributes the printing ink on a first inking roller 11 and a second inking orphan 12. » both of which have an offset printing plate 13 of one Color forme cylinder 14. The second inking roller 12 follows - seen in the direction of rotation of the forme cylinder 14 - one third inking roller 16, a fourth inking roller 17 and a fifth inking roller 18. These just mentioned Inking rollers 16, 17, 18 also have rolling contact with the pressure plate 13 and are just like the first and the second inking roller 11, 12 rubber-coated. On the second inking orphan 12 and the third inking roller 16 a first plastic-coated rider roller 20 is placed. On the third and fourth inking roller 16p. 17 rolls a second, plastic-coated rider roller 21, on the fourth and fifth inking roller 17,. * T8 a third plastic-coated rider roll 22 from.

Koenig 6 Bauer AG · j "; j j '^# {· .. * · * 7 1983-09-21

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The printing plate 13 is moistened by means of a moisture whale 23, which has a moisture content (; enw «lte 24 is in contact. The dampening solution dispenser waÄsti 24 is immersed in a moist waaser in a peach curd cheese 26 ”in. Moisturizing agent 23 and Peuohtmittelkostenwal «· 24 jointly driven in a known manner by means of a controllable electric motor β.

The main drive of the printing machine is also used for form cylinders 14, Guami cylinder 15 also the? Arbüberηahmewalte 4, Friction orphan 7, friction orphan 9 and riding orphan 21 are driven. The remaining walls of the inking unit 3, 6, 8, 11, 12, 20, 16, 17, 18, 22 become overly friction through orphans adjoining them 4, 7, 9, 21 or 14 driven cylinders.

In another embodiment of the inking unit according to the invention

Kig. 2) can also be added to the dampening system 23, 24, 26 Dampening unit 27, 28, 29 may be provided. In this case is the last paint application roller 18 with a moisture application orphan 27 in touch. The dampening orphan 27 is in contact with a dampening solution fountain roller 28, which is shown in FIG Humidifying liquid of a dampening solution box 29 is immersed. Dampening roller 27 and dampening solution box roller 28 are driven together by a controllable electric motor in a known manner.

In a further embodiment, the first dampening unit 23, 24, 26 is dispensed with or this is switched off, and that "goes on." Dampening unit 27, 28, 29 retained bsw. employed.

With the arrangements of the paint application rollers described above 11, 12, 16, 17, 18 and rider rolls 20, 21, 22 is achieved.

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“As Feeentwerk 27, 28, 29 eof the l« tst «racba« ftraga- «altt 18 fights. A gate ttaficbaftg he OCfaatAraekmilae is achieved when the activity of the offset printing ink on the inking rollers 11, 12, 16, 17, 18 - seen in the direction of rotation of the form - of the printing rollers to the inking roller remains approximately the same. This is achieved when the first dampening takes place on the first inking roller 11, bxw. the dampening unit 23, 24, 26 moistens on this.

/ Parts list

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Parts list

ϊ color box

2 ink fountain roller

3 vibrating roller

4 color transfer roller »distribution roller, first

5 f j

6 intermediate roller

7 distribution roller, second

8 intermediate roller, second

9th friction roller, third 10th

11 inking roller, first

12 inking roller, second

13 Offset ciruck place

14 forme cylinders

15 rubber cylinders

16 inking roller, third

17 inking roller, fourth

18 inking roller, fifth 19

20 rider roll, first

21 rider roll, second

22 rider roll, third

23 dampening form roller

24 dampening solution fountain roller 25

26 dampening solution box

27 dampening form roller

28 dampening solution fountain roller

29 dampening solution box 30

/ e / y statements

Claims (2)

Koenig * Bauer AG J **: 'j j'Vll ·, Χ * · \ Protection claims 1 The distribution roller is in contact with a first inking roller and a second inking roller, the second inking roller and a third inking roller are in contact with a first rider roller, the first rider roller is in contact with a third inking roller, the third fax application roller and a fourth inking roller with one second rider roller are in contact, characterized in that the fourth inking roller (17) and a fifth inking roller (18) are in contact with a third rider roller (22), that the second rider roller (21) is designed as a distribution roller, that a Feuc The application roller (23) of the dampening unit (23, 24, 26) is in contact with the first inking roller (11). 2. Offset inking unit with a dampening unit for a rotary printing press with an ink fountain from which printing ink has a number of driven and non-driven Rolls is transferred to a driven distribution roller by color splitting and a number of applicator rollers are in rolling contact with a printing plate of a forme cylinder, a distribution roller with a first application of ink swal ze and a second inking roller in contact stands, the second inking roller and one Koenig * Bauer AS \ * \ ·· J **: \ l · ''.1'UV 1 »« 5-Q7 ~ 3O * 3 27 397.2 \, ^s . |, * ⁵ ^ * ⁵ .. ⁸ '% . ^S ... ^: PI .6020ft third inking roller with a first rider roller in Are in contact, the first rider roller is in contact with a third inking roller, the third inking s roller and a fourth inking roller are in contact with a second rider roller, characterized in that that the fourth inking roller (17) and one fifth inking roller (18) with a third, rider roller (22) are in contact that the second rider roller (21) is designed as a distribution roller that a The dampening roller (27) of a dampening unit (27, 28, 29) is in contact with the last inking roller (18). Off se tf arbwerk with a dampening unit for a rotary printing press with an ink fountain from which printing ink has a number of driven and non-driven Rolls is transferred to a driven distribution roller by color splitting and a number of applicator rollers are in rolling contact with a printing plate of a forme cylinder, a distribution roller with a first inking roller and a wide inking roller is in contact, the second inking oval and a third inking roller having a first Rider roller are in contact, the first rider roller is in contact with a third inking roller, the third inking roller and a fourth inking roller are in contact with a second rider roller, characterized in that the fourth inking roller (17) and a fifth inking roller (18) with one third rider roller (22) are in contact, that the second rider roller (21) is designed as a distribution roller, that with the first inking roller (11) a dampening roller (23) of a first dampening unit (23, 24, 26) that with the last inking roller {18) a dampening roller (27) of a second dampening unit (27, 28, 29) is in contact.