EP1259376B1 - Dampening system and a method for alternately dispensing dampening means or cleaning liquid - Google Patents

Abstract

The invention relates to a dampening system. A surplus dampening means that has not been applied to a transmission roller (3) is supplied through a collecting line to optionally one of several collecting basins (23, 24) by means of a multipath valve (19). Separation of the dispensed liquids is thus possible in a perfectly classifying manner.

Description

The invention relates to a dampening system and a method for the optional application of Fountain solution or cleaning liquid according to the preamble of claims 1 or 3.

Through an advertising leaflet "spray damp and rubber cleaning in one" of the Swedish Grafiskt Team AB, S-57 121 Nässjö, a spray dampening unit has become known, by means of which alternatively also plate cylinders or blanket cylinders of a printing unit can be cleaned.

DE 36 38 607 A1 describes an inking unit in which a collecting container is optionally available different receptacles can be connected.

The invention has for its object a dampening system and method for optional Applying dampening solution or cleaning liquid.

The object is achieved by the features of claims 1 or 3.

The advantages that can be achieved with the invention are, in particular, that the various liquids that can be applied to the dampening roller partial non-use separately, d. H. different types Collection containers can be fed. Below are the liquids either reprocessed mixed with the respective liquid supply or to be disposed of.

An embodiment of the invention is shown in the drawing and is in following described in more detail.

Fig. 1

eine schematische Darstellung eines Querschnittes durch ein Sprühfeuchtwerk;

Fig. 2

einen Längsschnitt II -II nach Fig. 1 mit Darstellung des linken Endes des Sprühfeuchtwerkes, jedoch mit Schaltmitteln.

Show it:

Fig. 1

a schematic representation of a cross section through a spray dampening unit;

Fig. 2

a longitudinal section II -II of FIG. 1 showing the left end of the spray dampening unit, but with switching means.

A dampening unit 01 for a printing unit of a rotary printing press exists u. a. out a frame 02, which is an axially parallel to a roller, for. B. one Transfer roller 03 for dampening solution housing 04 carries. The Transfer roller 03 protrudes with one part of its lateral surface 06 into the one side Housing 04 opened towards transfer roller 03. Housing 04 takes several Means spaced apart in the axial direction of the transfer roller 03 for Applying dampening solution, e.g. B. spray nozzles 07.

The spray nozzles 07 are on a crossbar 08 fastened between the frame parts arranged on a nozzle carrier 10 and each point with their spray opening in Direction of the outer surface 06 of the transfer roller 03. Each of the spray nozzles 07 is on a common feed line 11 provided with a check valve 09 connected, which in turn via a multi-way valve 12 optionally with a feed line 13 for dampening solution or a feed line 14 for cleaning liquid can be connected.

The housing 04 receiving the spray nozzles 07 is on its underside as Collection container 16 formed so that one or more liquid return points 17th arise, each opening into a manifold 18. The manifold 18 is over a multi-way valve 19 optionally via lines 21; 22 with a collecting container 23; 24 connected for dampening solution or for cleaning liquid.

As is known, the dampening unit 01 can have two in addition to the transfer roller 03 or three other cylinders or rollers, one of which is not shown Moist application roller with a form cylinder and this in turn with a Rubber cylinder of a printing unit interacts.

Während des Produktionsvorganges, z. B. dem Drucken insbesondere von Zeitungen, wird das von der Übertragungswalze 03 ablaufende überschüssige Feuchtmittel im Sammelbehälter 23 für Feuchtmittel aufgenommen. Wird die Übertragungswalze 03 mit Reinigungsflüssigkeit besprüht, so sind beide Mehrwegeventile 12; 19 z. B. elektrisch betätigbar umgeschaltet und die überflüssige Reinigungsflüssigkeit wird im Sammelbehälter 24 für Reinigungsflüssigkeit aufgenommen.

The function is as follows:

During the production process, e.g. B. the printing of newspapers in particular, the excess dampening solution running off the transfer roller 03 is received in the collecting container 23 for dampening solution. If the transfer roller 03 is sprayed with cleaning fluid, then both multi-way valves 12; 19 z. B. switched electrically operable and the unnecessary cleaning liquid is received in the collecting container 24 for cleaning liquid.

Before applying dampening solution during production, i. H. during the Printing, a rinsing process takes place. During the rinsing process is already for Apply suitable dampening solution by means of the dampening system, but not in the Collection container 23 for dampening solution (which is used for reprocessing) passed, but in the collecting container 24 for cleaning liquid.

The spray nozzles 07 are thus during the rinsing with the supply line 13 for dampening solution and the collecting container 16 is with the collecting container 24 for cleaning liquid connected.

LIST OF REFERENCE NUMBERS

01

dampening

02

Frame (01)

03

transfer roller

04

Housing (01)

05

-

06

Lateral surface (03)

07

Means for applying dampening solution or cleaning liquid, spray nozzle (04)

08

traverse

09

Check valve (1)

10

nozzle carrier

11

Supply line, common (13; 14)

12

Multi-way valve

13

Supply line, dampening solution

14

Supply line, cleaning fluid

15

-

16

Collecting container (04)

17

Fluid return point

18

manifold

19

Multi-way valve

20

-

21

management

22

management

23

Storage tanks, dampening solution

24

Collection container, cleaning liquid

Claims (3)

1. Dampening unit for a printing unit of a rotary printing press for dispensing fountain solution or cleaning liquid, characterised in that there is arranged a catching container (16) for liquid, whose collecting line (18) is connected, via a multi-way valve (19), alternatively to a collecting container (23) for fountain solution in a first mode of operation or to a collecting container (24) for cleaning liquid in a second mode of operation during the dispensing of fountain solution in a flushing process.
2. Dampening unit according to claim 1, characterised in that the catching container (16) is arranged below the means (07) for dispensing fountain solution or cleaning liquid and in the region of the dampened roller (03).
3. Method of dispensing fountain solution or cleaning liquid alternatively in a dampening unit of a rotary printing press, wherein fountain solution is dispensed after the application of cleaning liquid, characterised in that the fountain solution is first conveyed to a collecting container (24) for cleaning liquid during a flushing process and is then conveyed to a collecting container (23) for fountain solution during a dampening process.

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