DE2460612A1 - ROLL OFFSET MACHINE - Google Patents

Description

46S0 Herne, 8000 Munich 40,

Freiligrathsiraße 19 pil ~ l I- now U-. Eisenacher Strasse 17

P.O. Box 1 « Dipi.-ing. RH Bahr _Pat . _{Anw Bel2lei}

Dipl.-PhyS. Eduard Betzier Telephone: 36 3011

I ¹⁰ , ¹⁴ Dipl.-Ing. W. Herrmann-Trentepohl »» ms

Telegram address: ** Telegram address:

Bahrpatente Herne PATENTANWÄLTE Babetzpat Munich

Telex 08229853 Telex 5215360

l ~ ~ i bank accounts:

Bayerische Vereinsbank Munich 952 Dresdner Bank AG Herne 7-520499 Postal check account Dortmund 558 68-467

^Re '- ^: M 05 018 B / h.

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Munich

20th December 1974

Adolf Weingartner, 8031 Geiselbullach, Leibl-Weg 1

Web offset machine

The invention relates to a web offset machine with at least two printing units, at least one single-lane dryer and one at least one-lane cooling roller stand.

In the known web offset machines, if different printing units, ie. not like z. B. at Multi-color printing in each case multi-colored, but uniformly printed paper webs enter the dryer, a multi-web one Dryers are provided, the individual paper webs through spaced slits in the. "In general run in dryers operated with hot air.,

Since simple printing work is often carried out on web offset machines, which are carried out after the previous make the use of a multi-lane dryer necessary ”for this application Web offset presses make significant investments.

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OFMGfNAL INSPECTED

The object of the invention is to propose a web offset machine with which it is possible to pass through a slot of the dryer to run two printed paper webs, so that the web offset machine is easier when present Multi-lane printing work can be used without the need to use multi-lane dryers.

The same also applies to the cooling roll stand connected downstream of the dryer, which is designed in this way by the invention should be that it allows the double webs coming from the dryer to be separated again without the use of several, normally independently working chill roller assemblies is required.

The invention is thus based on a web offset machine with at least two printing units, one with at least one lane Dryer and an at least one-lane cooling roll stand and proposes to solve the problem indicated that An auxiliary roller in front of the dryer to merge two printed ones coming from two different printing units Paper webs are provided in a common insertion slot of the dryer and that in the chill roll stand Cooling rollers of at least one cooling roller unit are assigned two deflection rollers, the first of which is the lower paper web first over the second cooling roll, while the second deflection roll leads the upper paper web before the third Deflects cooling roller to the common outlet.

Like the chill rolls, these deflection rolls can be designed as cooled rolls, but it is like experience has shown, also quite possible to design them in a further embodiment of the invention as uncooled, ceramic-coated rollers.

The drawing shows a single figure in a schematic representation of a web offset machine according to the invention.

With A, B and C three different printing units are designated,

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which work one after the other on the same paper web when printing in color, which is then fed into the dryer T. v / earth and only in the lower · slot which it leaves to the cooling roll stand K, where the printed Paper web is cooled and passed into the folder v / pus.

If only printing units A and C are to be used, see above this is possible in the embodiment shown Use of the two-lane dryer T.

If you want the third printing unit B, for example, for implementation To use simpler printing work, this was previously not possible because a third through-passage in the dryer is missing.

The invention creates the possibility of such a third printing job without changing the dryer or Investing in a three-lane dryer. According to the invention namely the dryer T is a guide roller U upstream, via which the paper web coming from the printing unit B runs into the lower slot of the dryer T, into which also the paper web coming from the printing unit C is introduced. The two paper webs lie on top of one another, which is the case with simple ones Printing does not pose any problems.

The double paper webs coming from printing units B and C. 1 and 2 must be separated again after leaving the dryer T, whereby there is none due to the principle of the invention The use of a further cooling roller unit is required, but only the addition of two deflection rollers U1 and U2 between the chill rolls I, II and III.

The web 2 from the printing unit B runs out of the dryer in the usual way over the cooling roller I, then over the cooling roller II and is _{deflected by the deflection roller U 2} from the cooling roller III to the exit of the cooling roller stand; The web 1 from the printing unit C

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runs after leaving the dryer via the guide roller U1, then the chill roller II and thence, bypassing the cooling roll I for the cooling roll III, from which it is deflected by a _(downstream roller system to the output of the cooling roll stand. Of course, the additional rolls U, U ^ and Up are provided in a similar way also in the upper web of the dryer and the upper passage of the cooling roll stand, whereby one has the possibility to let a possibly existing fourth printing unit work in addition, since then cooperates with the printing unit A, so that the paper web coming from this additional printing unit interacts with the paper web 3 from printing unit A in a similar manner.

So it is, for example, with a four-color roll-to-roll machine It is possible to carry out four different printing jobs simply by adding six additional rollers.

If you do not want to train the deflection _{rollers U 1} and U ₂ as additional cooling rollers, then this is possible if, in a further embodiment of the invention, these rollers U ^ and U _{2 are designed} as uncooled, ceramic-coated rollers.

- Patent claims: -

609826/0539

Claims (2)

Pat e η t a η s ρ r ü ehe 1.) Web offset machine with at least two printing units, a dryer with at least one lane and at least one single-track cooling roll stand, characterized in that that in front of the dryer (T) an auxiliary roller (ü) for merging two of two different printing units (B, C) of incoming, printed paper webs (1, 2) are provided in a common insertion slot of the dryer (T) is lind that in the chill roll stand (K) the chill rolls (I, II, III) assigned to at least one chill roller unit (IL ·, Ug) are, of which the first (U ,,) the lower paper web (1) first over the second cooling roller (II), while the second deflection roller (Up) remove the upper paper web (2) from the * third cooling roller (III) to the common .Auslaß deflects. 2. Web offset machine according to claim 1, characterized in that the deflection rollers (U ^, Up) in the cooling roller stand (K) are uncooled, ceramic-coated rollers . 609826/0539 Le first page