DE2012232C - Inking unit for rotary offset printing machines - Google Patents

Description

support rollers by a corresponding arrangement of the In the inking unit shown in Fig. I is the

Upstream inking rollers the same amount of ink from the ductor roller 1 over the siphon roller 2

possibly even allocated to the direction of rotation of the 55 of the distribution roller 3 and from this by means of the

Plate cylinder last depending on which to be processed- transfer rollers 4,5 on which the division of the

the subject the least amount of color, ie the thinnest color receiving ink storage roller 6 cir-

To apply color film. gen. Through the transfer rollers 7,8 the color

In order to achieve this, it is already known to be distributed over two roller blocks, one of which is yours

(German patent specification 1 140 204), which between the 60, among other things, the distribution cylinder 9 and the order

Ink storage roller and the lower distribution cylinder in rollers 13, 14 and the other the distribution cylinder 10

Direction of rotation of the ink storage roller first transfer and application rollers II, 12 receives. All order

wal / 2, which are the rollers in the direction of rotation of the plate cylinder, in a known manner on the plate cylinder

the last contact roller / s supplied with paint, or 15 on.

the corresponding roll piece clockwise from the 65 In the direction of rotation of the indicated by arrows

Color storage roller replaced by an adjustable cam Plattcnzylindcrs 15 and the ink storage roller 6

control take off. The transfer roller 7 complies with the law of the color gap

pivotable mounting of the wafer / s brings more color than the overlap roller 8, see above

(/ 2012

that the last applicator rollers 13, 14 in the direction of rotation of the plate cylinder 15 receive more ink from the first applicator rollers 11, 12. In order to remedy this, the transfer roller 7 is provided over part of its length on the lateral surface with a preferably sickle-shaped flattening 16 in cross-section, while sections 26 with a cylindrical cross-section are provided over the remaining length. When the transfer roller 7 is rolled onto the ink storage roller 6, no or, if the depth and circumferential length of the flattened area is correspondingly ϊγ, less ^ sr'v: is withdrawn from the ink storage roller 6, so tl & i. : h the last applicator rollers 13, 14 emeo duping ink film received. By appropriate ^ ^ t easurement the circumferential length of flattening * ^£ - "" ^r '.ra leaden V / alzenslück exactly to the respective L ^1' d in the paint part on the rollers 9, 53, 14 e - ⁱ rfnissen dosed accordingly and Replacing the transfer roller 7 can be changed. *>

252

ta der ■ «» ■ * _
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f _g r _m äf principle can also be used with iB = »b _{) U} inking unit with a- ·

larbwaSt! T color drivers with kleii be used. For the purpose of

£ SS>

£ S5? £ vSS>

Si ödere be provided 19 mH the flattening, kanp by the inventive Ausouaung ücr FarEwalzen 17 of the ink flow to the Auftragwalzeu 13, 14 correspond to I are influenced.

1 sheet of drawings

Claims (3)

ι * 2 an increased effort and increases then Palent claims: the production costs. The object underlying the invention bc- 1. Inking unit for offset printing machines, it now means the even distribution of the in which the paint from a paint container 5 paint film on the applicator rollers or the application Using a number of inking and distribution rollers, the application of less ink to the applicator rollers of the one Carrying rollers in two separate Waizensiöcken with or other roller stocks in a simple and therefore Different quantity is supplied, thereby enabling cheaper ways. characterized that in order to reduce the after the invention, this is bcs an inking unit the applicator rollers (11, 12 or 13, 14) of the belonging of the type mentioned at the outset are achieved by clali / ur rigen roller stock promoted amount of ink each reduction in the application rollers ües zugenoi, -die on which the distribution of the color to the two roller heads is conveyed in each case the Rcilvylinder taking over the roller blocks on which the distribution of the color between the two Wa! (6) or the roller (6 ') abutting Überlra ^ roller zen pieces receiving Rcibzylmder or the (7 or 8) or inking roller (17 or 19) on a 15 roller adjacent overlap roller or inking roller au, Part of its length on the lateral surface one over part of its length on the lateral surface one a part of the circumference reaching flat over part of the circumference (16) and sections (20) over the remaining length and cylindrical sections over the remaining length / yliiHrischen cross-section, with over-cross-section, with transfer rollers or Carrying rollers (7 or 8) or inking rollers (17 or ao inking rollers with circumferential 19 of different lengths) can be attached with flattened areas extending over different lengths of circumference cross-sectional flattenings can be used. the flattening on the replaceable cover 2. Inking unit according to claim 1, characterized in that the carrier roller is the one to be passed on to the applicator rollers indicates that the flat (16) sickle-shaped amount of color corresponding to the processed Sujei has moderate cross-section. exactly doubled, since in the flattened 3. Inking unit according to claims I or 2, rich depending on the depth less or no color from characterized in that the sections (20), friction cylinder is split off. By eliminating mi 'cylindrical cross-section adapts to that of the control system and the complicated storage Roll ends are located. 30 the inking unit also has a simpler structure again. It is known that in dampening units, instead of a reciprocating vibrating roller, an im Moist liquid container surrounding immersion scale to be used with a circumferential surface 35 which is non-circular in cross section (German patent specification I 207 403). The invention relates to an inking unit for Offselrola- This roller, however, has glci- tion printing machines, in which the Farhj aus chen non-circular cross-section and has no cylindrical a dye container over a number of dye and (Irish guide sections, as they are due to the wide Rcibrollwalzen the support rollers in two separate chen texture of the surface of inking resp. Roller stock ».!» with different amounts of pulling 40 transfer rollers and with regard to their loose load will lead. gcoing in rope guide bearings to prevent Bekanr.iikh depends on the quali'.äl des draekes in the rang of simplicity that are required. Furthermore Depending on the fineness of the color, there is no exchange in this known design bcr over the ductor roller and the painting rollers b / w. provided in order to keep the amount conveyed To be able to adapt the ink to the ink application roller and thus the 45 to the subjects. Plate from applied color film. The training In the drawing is an exemplary embodiment of the of the inking unit, the recognition / encompassing invention is shown. Ls shows geiegi that with two rollers rolling on each other Fig.! an inking unit with ink storage line, the color is bumped and the on the colored F i g. 2 another embodiment of a color Roll the following roll so that it is about half as strong as ken color film received. F i g. 3 the overlap roller according to the invention, On the other hand, efforts are also being made to show a section along line IV-IV of FIG.