EP2566696B1 - Printing unit comprising washing operation of inking unit rolls and dampening unit rolls, and corresponding method - Google Patents

Description

The invention relates to a printing unit for operating a printing unit according to claim 1.

By the WO 2008/095551 A1 is a printing unit of a rotary printing machine with a forme cylinder, cooperating with the forme cylinder inking unit and a co-operating with the forme cylinder known, wherein the dampening unit a three-roller compactor, namely cooperating with the forme cylinder in the printing operation Feuchtaufragwalze, cooperating in the printing operation with the Feuchtaufragwalze, a Changierhub exporting smoothing roller and cooperating with the smoothing roller dampening drive roller. The dampening unit receives the fountain solution by spraying the last viewed from the forme cylinder dampening roller, z. B. a dampening drive roller, from a spray bar ago. In the washing position an inking roller of the inking unit and the dampening roller are placed directly against each other by the dampening unit near inking roller about the axis of a Farbreibzylinders and / or the dampening roller about the axis of the dampening drive roller is pivotally mounted.

The DE 10 2007 015 404 A1 relates to a multi-rolling dampening unit, wherein separating means prevents the introduction of dampening agent intended for a certain zone into an adjacent zone. In the printing unit, a bridge roller between dampening form roller and inking roller can be provided so movable that it can be connected for the washing operation in contact with the two applicator rollers. A moistening agent is introduced by spraying the last viewed from the forme cylinder dampening roller, z. B. a dampening drive roller.

In the WO 02/07973 A1 is a two-roll, a dampening roller and a dampening roller exhibiting dampening unit of a printing unit of a rotary printing machine if necessary expandable by a rubber-elastic coated roller in a first stage can be supplemented and turned on by corresponding adjusting and holding elements on the friction roller and off.

By the DE 10 2005 018 821 A1 a printing unit of a sheet-fed printing machine is disclosed, wherein a cooperating with a dampening roller rider roll optionally additionally be brought into contact with a inking roller, and thus wet and inking unit can be coupled. The dampening roller receives the dampening solution from a dampening roller, on the circumference of a metering roller rolls on a peripheral portion, which is considered in operating direction of the dampening roller between the location of a dampening solution from a moisture container and the Nippstelle with the dampening roller.

In the US Pat. No. 3,701,316 a dampening form roller is provided, which can be adjusted in an operating situation for the washing of the inking unit from the forme cylinder and from the other dampening rollers and to an inking unit roller. Thus, at least this dampening roller can be cleaned together with the inking unit.

In the US Pat. No. 3,842,735 discloses an inking roller, which contacted in a washing position arranged on a parked dampening roller rider roller.

By the DE 10 2007 004 217 A1 discloses a method and an apparatus for cleaning rolls, wherein a arranged on the dampening roller rider roll is coupled as a bridge roller with an inking roller.

The invention has for its object to provide a printing unit for operating a printing unit.

The object is achieved by the features of claim 1.

The advantages achieved by the invention are particularly that washing of dampening rollers from the inking unit can be done; This particular, without the residual color on the form cylinder or a specially provided washing device must be removed. In an advantageous embodiment of the dampening unit, wherein viewed from the forme cylinder second dampening roller z. B. is formed with a hard lateral surface, is also an effective washing of one or more in the operating position of the second dampening roller subsequent, formzylinderfemerer dampening rollers possible by the formation of the dampening unit.

In a particularly advantageous embodiment of the dampening unit with a fountain solution to a second of at least two, in particular three or more, if necessary, serially arranged dampening rollers an optimized positioning of dampening solution source can be undertaken with the same number of slots, without compromise in terms to be provided parking paths or distance changes are received. This is important, for example, with regard to a defined order and / or with regard to reduced "fogging" by minimizing the spacing between the source and the dampening solution absorbing dampening roller.

It is particularly advantageous in connection with a washing operation that in a special arrangement and storage of dampening rollers trained with a hard surface, preferably second dampening roller can take an external position in a single-drum to be washed by changes in the dampening unit or the rest, z. B. "soft", dampening rollers a compactor without the interposition of the dampening solution in the printing operation receiving, z. B. hard, dampening roller form.

Washing of the dampening unit can thus take place via the inking unit, without a dampening applicator roll having to remain attached to the forme cylinder, and without a roller formed with a chrome or plastic surface having a blocking effect for the fluid flow within the dampening pulley.

When washing dampening solution can be registered in an advantageous embodiment. This can be done instead of or in addition to a detergent entry in the inking unit.

It is advantageous in production operation when the dampening unit is pre-moistening, ie, arranged on the forme cylinder in the production direction of rotation before the inking unit. This is preferably true for all printing units of a printing unit or even a printing tower with z. B. at least eight printing units.

Since the dampening form roller deviating from the standard version has to carry out a larger adjustment, the storage of the dampening roller z. B. arranged on pivoting levers. In a further development, the journal receiving radialhubfähige roller locks or adjustable roller locks the dampening roller are additionally mounted on the pivoting levers, the on / off points on the roller locks and switching between production and washing operation via pivoting the lever to effect.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Fig. 1

eine schematische Darstellung eines Ausführungsbeispiels eines Druckwerks in Betriebsstellung (Produktionsbetrieb);

Fig. 2

eine schematische Darstellung eines Ausführungsbeispiels des Druckwerks aus Fig. 1 in Waschstellung (Waschbetrieb);

Fig. 3

eine schematische Darstellung von Druckwerken mit Feuchtwerken gemäß dem Ausführungsbeispiel in einem vier Doppeldruckwerke aufweisenden Druckturm;

Fig. 4

eine schematische Darstellung von Druckwerken mit Feuchtwerken gemäß dem Ausführungsbeispiel in einer vier Druckwerke aufweisenden ersten Ausführung einer H-Druckeinheit;

Fig. 5

eine schematische Darstellung von Druckwerken mit Feuchtwerken gemäß dem Ausführungsbeispiel in einer vier Druckwerke aufweisenden zweiten Ausführung einer H-Druckeinheit;

Fig. 6

eine schematische Darstellung von Druckwerken mit Feuchtwerken gemäß dem Ausführungsbeispiel in einer vier Druckwerke aufweisenden Ausführung einer Satellitendruckeinheit.

Show it:

Fig. 1

a schematic representation of an embodiment of a printing unit in the operating position (production operation);

Fig. 2

a schematic representation of an embodiment of the printing unit Fig. 1 in washing position (washing operation);

Fig. 3

a schematic representation of printing units with dampening units according to the embodiment in a four double printing units having printing tower;

Fig. 4

a schematic representation of printing units with dampening units according to the embodiment in a four printing units having first embodiment of an H-printing unit;

Fig. 5

a schematic representation of printing units with dampening units according to the embodiment in a four printing units having second embodiment an H printing unit;

Fig. 6

a schematic representation of printing units with dampening units according to the embodiment in a four printing units having execution of a satellite printing unit.

Fig. 1 shows in half-schematic representation of a printing unit 01 of a rotary press not otherwise shown, for example, a web-fed rotary printing press, in particular a wet offset printing, z. B with one or more printing towers trained newspaper printing machine, wherein it may be the printing unit 01, for example, one of four printing units of a nine-cylinder satellite printing unit or a printing unit of one of several double printing units of a printing tower and the other printing units of the double printing units having printing tower or the nine-cylinder satellite printing unit can be designed accordingly. The printing unit 01 can be, for example, four or six plates wide, ie printing cylinder 02; 03 and 04 have a (usable) axial length of four or six printing plates, wherein the printing cylinder 02; 03; 04 may have a circumference of, for example, two printing plates.

The printing unit 01 comprises a printing cylinder 02, which may be formed as a forme cylinder 02, in particular as a plate cylinder 02, cooperating with the forme cylinder 02 printing cylinder 03, which may be formed as a transfer cylinder 03, in particular as a rubber cylinder 03, as well as cooperating with the transfer cylinder 03 another printing cylinder 04, which may be formed as a counter-pressure cylinder 04, in the case of a double printing unit as another transfer cylinder 03 or in the case of a nine-cylinder satellite printing unit as a satellite cylinder 04. Between the transfer cylinder 03 and the impression cylinder 04 is a substrate web, not shown, especially Guided paper web and the transfer cylinder 03 generates at each of its revolutions at least one printed image on the paper web. At least the printing cylinder 02; 03 are for performing pressure-on / -Ab-adjusting movements by means not shown bearings, advantageously in linear bearings with respect. The also not shown side frame of the printing press radially, in particular mounted linearly movable.

The forme cylinder 02 is assigned an inking unit 06 and a dampening unit 07. The inking unit 06 and the dampening unit 07 are viewed in a circumferential direction of the forme cylinder 02 adjacent to each other. In the in Fig. 1 illustrated operating state, z. B. production, the printing unit 01, both the inking unit 06 and the dampening unit 07 are employed for a printing operation of the printing unit 01 to the forme cylinder 02. The relevant parts are in a so-called "operating position". Also indicated by arrows are present in this operating state directions of rotation, z. B. Operating directions.

The inking unit 06 may in principle be designed in any way, but has at least one with the forme cylinder 02 in print-on, ie in production, to its color co-acting roller 08; 09; 11, z. B. inking roller 08; 09; 11, in particular inking roller 08; 09; 11 and a color reservoir 12. The inking roller (s) 08; 09; 11 is or are in a preferred manner radially movably mounted on or in side frames, not shown, that they can be switched on and off either on the forme cylinder 02 or are. In a preferred embodiment, at least one below explained in more detail washing device 31; 34 provided by which z. B. after the end of production in the inking unit 06 located color can be removed. In a preferred embodiment, the inking unit 06 at least two inking rollers 08; 09; 11, which in the operating position via one or more rollers 13; 14; 16; 17; 18, z. B. inking rollers 13; 14; 16; 17; 18 color from the ink reservoir 12 forth via a serial or divided compactor can be fed. in the Compactor is preferably at least one as changeable roller 17; 18 trained distribution cylinder 17; 18 provided.

In the example shown, the inking unit 06 three inking rollers 08; 09; 11, which are employed in a current production process of the rotary printing machine to the forme cylinder 02. Between a printing ink from the ink reservoir 12 receiving inking roller 13, z. B. ink fountain roller 13, and the ink on the forme cylinder 02 applying inking rollers 08; 09; 11 is in the transport direction of the ink next roll 14 in the case of a trained as a film inking 06 inking unit 06 z. B. a film roll 14 is arranged. In the example below, a trained as a paint flow separation roller 16 roller 16 is provided which one coming from the ink fountain roller 13 ink stream in two color streams, for. B. a leading through a roller 17 main flow and into a via a roller 18 leading secondary flow, divides.

The roller 17 and the roller 18 is as one in the respective stream on each at least one of the inking rollers 08; 09; 11 ink transferring transfer cylinder 17; 18 trained. The two distribution cylinders 17; 18 perform a running in their respective axial direction traverse stroke, the traverse stroke of a friction cylinder 17 z. B. may be coupled by a lever arrangement with the traverse stroke of the other distribution cylinder 18. In an alternative embodiment, the traversing stroke of the respective distribution cylinder 17; 18 generated by independent drives. In both drive variants, the two traversing strokes can be designed in opposite directions. The traverse stroke of the respective distribution cylinder 17; 18 can z. B. each be generated by a gear from the rotational movement or by a specially provided drive means for a coupled or independent oscillation.

The ink reservoir 12 is formed in the present example of zonal with respect to the color flow adjustable inking unit 06 as a color box 12 or as a color tray 12, wherein the ink fountain 12 or on the ink tray 12 in the axial direction of the ink fountain roller 13th strung together several, z. B. thirty to sixty paint knives (not shown) are provided, which are each preferably remotely adjustable with an adjusting means, not shown in their respective employment of the ink fountain roller 13 and actually employed, whereby a zonewise metering of the ink ductor 13 recorded ink is possible. The inking unit 06 is therefore formed in the preferred embodiment as a zone inking unit, but may in principle be designed as a lifter, short or anilox inking unit.

Deviating from Fig. 1 and 2 For example, the inking unit 06 can also be designed as a single-roller inking unit, in the compactor of which two distribution cylinders are arranged in series. The form cylinder near distribution cylinder can act in this case with one, or advantageously two inking rollers together. In a variant, the cylinder near the cylinder may additionally act together with a bridge roller which can be brought into contact with a third inking roller.

The inking roller (s) 08; 09; 11 has or have a lateral surface preferably made of an elastic and / or compressible material, for. B. of a rubber or a rubber-containing material.

The dampening unit 07 has a plurality of rollers 21; 22; 23 or dampening rollers 21; 22; 23 on. It is preferably as a dampening means contactless applying dampening 07, z. B. formed as a spray dampening unit 07, so that it has a spray bar 19 as dampening solution source 19, wherein preferably a plurality of arranged in the spray bar 19 spray nozzles spray the dampening solution onto a roller 22 of the dampening unit 07. The coming of the spray bar 19 fountain solution receiving roller 22 is preferably as dampening 22 with a hard and substantially unyielding surface, such as chromium or a plastic such. B. Rilsan, trained and / or stored changierbar in its axial direction. In the case of an axial Changierbarkeit the traversing movement by a rotation of the roller 22nd in the traversing movement transforming gear or by a separate drive means, for. As a motor with a corresponding gear, forced.

The dampening solution sprayed onto the dampening drive cylinder 22 is transferred by the dampening solution to a dampening roller 21 designed as a dampening applicator roller 21 and from there to the forme cylinder 02. Preferably, the dampening unit 07 is designed as a three-roller dampening unit 07, wherein the dampening cylinder 22, a further, cylinder remote form roller 23, z. B. a third dampening roller 23, z. B. as a rider roll 23 or smoothing roll 23, employed in the operating position or is adjustable. This third roller 23 is viewed in the operating direction of rotation of the dampening cylinder 22 between the location of a fountain solution by the dampening solution source and the Nippstelle with the formzylindernah dampening roller 21. The three rollers 21; 22; 23 are preferably arranged relative to one another such that in the operating position (pressure on) a plane connecting the axes of rotation of the dampening cylinder 22 and the rider roll 23 with an axis connecting the rotational axes of the dampening cylinder 22 and the dampening roller 21 an angle less than or equal to 120 °, especially smaller or equal to 90 ° form each other, said angle as Innenwirkel preferably opens to the side of the inking unit 06. Ie. z. B. that in the operating position, the nip of the dampening cylinder 22 (second roller 22) with the dampening roller (first roller 21) and / or the nip of the dampening cylinder 22 (second roller 22) with the rider roller 23 (third roller 23) is located in a half-space which is located on the side facing the inking unit 06 side of a connecting through the axes of rotation of the central dampening roller 22 and the forme cylinder 02 fictitious plane.

Also, the smoothing roller 23 can perform a traversing stroke extending in its axial direction, for which purpose preferably a rotation thereof is provided in a traversing movement transforming gear. The dampening roller 21 and / or the rider roll 23 has a lateral surface preferably made of an elastic and / or compressible material, for. B. of a rubber or a rubber-containing material. The dampening unit 07 thus has at least two, preferably three dampening rollers 21; 22; 23, wherein the considered in the roller train from the forme cylinder 02 second, with respect to a three-roller dampening unit 07 middle roller 22, the dampening solution is supplied by the dampening solution source 19.

As viewed from the forme cylinder 02 "second" roller in the compactor is to be understood here also an embodiment, when two dampening rollers 21 provided and cooperated with the forme cylinder 02 and the dampening roller 22 together.

At least the inking roller (s) 08; 09; 11 of the inking unit 06 and the dampening roller (s) 21 of the dampening unit 07, but preferably also the film roller 14 and the ink flow separation roller 16 of the inking unit 06 and the rider roller 23 of the dampening unit 07 are each radialhubfähig, z. B. in accordance with executed roller bearings or movably mounted or radially displaceable roller locks arranged.

The radial stroke of these rollers 08; 09; 11; 14; 16; 21; 23 refers to the fact that the respective axis of these rollers 08; 09; 11; 14; 16; 21; 23 or at least one of the ends of these rolls 08; 09; 11; 14; 16; 21; 23 opposite one to the respective roller 08; 09; 11; 14; 16; 21; 23 belonging, possibly frame-fixed or, in contrast, in the case of rollers 08 and / or 21 also adjustable, z. B pivotable (see below) bearing point is eccentrically adjustable.

In the case of the radially displaceable roller lock, the eccentric adjustment of the roller 08 movably mounted thereby takes place; 09; 11; 14; 16; 21; 23 by means of preferably a plurality of preferably at least two, z. B. three or as shown four each symmetrical and concentric about the respective axis of these rollers 08; 09; 11; 14; 16; 21; 23 arranged in a housing of the roller lock actuators 24, preferably even the same to the same roller 08; 09; 11; 14; 16; 21; 23 associated actuators 24 individually and independently of each other by a control unit z. B. by exposure to a pressure medium, for. B. pneumatically, and can be adjusted to a specific travel, each actuated actuator 24 each with respect to the roller 08; 09; 11; 14; 16; 21; 23, to which it belongs, exerts a radial force, this force being the axis of this roller 08; 09; 11; 14; 16; 21; 23 moves radially or at least tries to move. If several at the same end of one of the rollers 08; 09; 11; 14; 16; 21; 23 arranged actuators 24 are actuated simultaneously, resulting from the axis of the respective roller 08; 09; 11; 14; 16; 21; 23 executed radial stroke of a vector sum of the respective radial force of the actuators actuated 24. The from the axis of the respective roller 08; 09; 11; 14; 16; 21; 23 executable Radialhub is usually preferably in the range of a few millimeters, z. B. it is up to 10 mm, which is sufficient to the respective roller 08; 09; 11; 14; 16; 21; 23 of at least one adjacent cylindrical rotary body, for. B. the forme cylinder 02, turn off. In the case of a larger travel required, it can also be dimensioned larger, at least for this application (see, for example, below the embodiment of the actuating mechanism of the dampening form roller 21 described as the second embodiment).

The radial stroke of the respective rollers 08; 09; 11; 14; 16; 21; 23 enabling storage, however, can in principle be realized in another embodiment, for. B. in a conventional manner in roller locks with fixed in the roller lock roll neck, the roller locks are mounted on in or on the side frame pivotally mounted on eccentrics or on short pivoting levers. It can be provided as radial hub bearings also along linear displacement paths movable roller locks. It can also be mixed versions advantageous, wherein z. B. a part of the rollers 08; 09; 11; 14; 16; 21; 23, z. B. at least the third dampening roller 23, in above-described radialhubfähigen roller locks and another part in pivotally mounted on lever or eccentric devices, the pin fixing roller locks are adjustable.

The inking unit 06 preferably has at least one of the printing unit cylinders 02; 03 mechanically independent drive motor 26. This preferably acts on at least one distribution cylinder 17; 18. In an advantageous embodiment of the drive motor 26 acts in production only on one of several Reibzylindern 17; 18, where he z. B. in a washing z. B. on both the distribution cylinder 17; 18 can act. In addition to the drive motor 26, a mechanically independent drive motor 27 may be provided for the ink fountain roller 13. In a simple embodiment, the dampening unit 07 or can the rollers 21; 22; 23 of the dampening unit 07 be driven only by friction with the forme cylinder 02 in production (operating position) or by friction with an inking roller 08 in the washing mode. Alternatively, a dampening roller 21; 22; 23, z. B. the middle roller 22, with the drive motor 26 of the inking unit 06 mechanically coupled and forcibly driven.

In an advantageous embodiment, however, the dampening unit 07 at least one of the printing cylinder 02; 03 and the inking unit 06 mechanically independent drive motor 28. This drives preferably on the dampening 22nd Form and transfer cylinder 02; 03, as shown, each have their own, or possibly pairwise paired, a drive motor 29.

The or the distribution cylinder 17; 18 of the inking unit 06 is or are like the distribution cylinder 22 of the dampening unit 07 preferably with respect to their traversing forcibly driven. This can be achieved by a rotation of the distribution cylinder 17; 18; 22 in the traversing movement transforming gear or by a separate drive means, for. B. a motor, not shown, with appropriate gear, forced.

The inking unit 06 further comprises a washing device 31, for example, the automatic detergent feeds, not shown, one to one of Inking rollers 08; 09; 11; 13; 14; 16; 17; 18, in particular a rubbing roller 18 of the inking unit 06 engageable washer blade 32 and a drip pan 33 may include. This washing device 31 is for the purpose of cleaning the inking unit 06 at z. B. the roller 18 adjustable, for example, mounted swivel. Alternatively or additionally, a washing device 34 applying a detergent to the ink flow separating roller 16 may be provided, which preferably sprays the detergent onto the lateral surface of the rotating ink flow separating roller 16. This alternative or additional washing device 34 operates in the washing process at least with the engageable with the rubbing roller 18 of the inking unit 06 wash blade 32 together.

During the production operation, d. H. in the operating position, preferably there is no direct connection between rollers 21; 22; 23 of the dampening unit and rolls 08; 09; 11 13; 14; 16; 17; 18 of the inking roller train.

In order now to allow that with one and the same washing device 31; 34 or by a common use of both washing devices 31; 34 in addition to the inking unit 06 at the same time the dampening unit 07 can be cleaned, it is provided that (at least) one of the rollers 08; 09; 11; 14; 16; 17; 18, 21; 22; 23 of the inking unit 06 and / or dampening unit 07 is so convertible that the inking unit 06 and the dampening unit 07 (at least) have a common roller train to transport in this way the detergent also to the dampening unit 07 or from the dampening unit 07 back to the inking unit 06 can. As a result, a direct (not on the forme cylinder 02) connection or "bridge" between inking and dampening 06; 07 can be produced for the washing operation.

As convertible, the coupling or bridge producing rollers 08; 09; 11; 13; 14; 16; 17; 18 are in particular the (ink works next) dampening roller 21 and / or the dampening unit next inking roller 08, which are arranged radially movable on the frame anyway in an advantageous embodiment.

Im in Fig. 2 shown washing operation, ie the respective rollers 08; 09; 11; 13; 14; 16; 17; 18 are in the washing position, the dampening and inking rollers 21; 08; 09; 11 parked from the forme cylinder 02, the adjacent wet and inking roller 21; 08 are in contact with each other, in particular in rolling contact, at the same time involved in the coupling or bridge formation inking roller 08 is in contact with the upstream in the operating position ink fountain roller 17. The involved in the coupling or bridging dampening roller 21 is for the preferred case of the three-roll dampening 07 out of contact with the upstream in the operating position dampening roller 22, but in direct contact with the cylinder in the operating position distant third or last dampening roller 23. The two Dampening or inking rollers 21 and 08 adjacent, in the operating position upstream rollers 22; 17 are in a preferred embodiment without operationally radial adjustability, possibly radially adjustable, formed, ie their axes of rotation are operationally fixed in space with respect. A radial direction.

In a first embodiment, the geometric arrangement of the affected rollers 21; 22; 23; 08; 17 and the respective design of the actuating directions and the achievable travel of the axially movable roller (s) 21; 08 and possibly 23 designed such that no beyond the conventional or described in more detail above, a Axialhub enabling roller locks additional storage and or adjusting means must be provided. Thus, for example, the distances to be overcome by geometric optimization so small and / or be designed by appropriate design of the axial stroke enabling storage means so large that the dampening roller 21 and / or the inking roller 08 in the above-mentioned positions relative to each other and to the rollers 22; 23 and 17 can be spent, wherein the rider roll 23 can assist if necessary by supporting its own mobility. For example, the above, the actuators 24 having roller bearings (at least for the roller 21 and / or the roller 08) may be formed with a corresponding stroke. Since the dampening roller 21 in the washing position ehedem should be out of contact with the second operating position roller 22, in an alternative, a linear travel in a corresponding between the inking roller 08 and the rider roller 23 lying direction for the dampening roller 21 is possible, wherein z. B. the other adjustable rollers are mounted in a conventional manner in levers or above roller bearings. Possibly. Any existing inaccuracies or small errors can then be compensated for example by movement of the rider roll 23 and / or the inking roller 08.

Too tight construction between inking and dampening unit 06; 07 and / or roller bearings to avoid particularly large axial stroke, in an advantageous second embodiment, the dampening roller 21 and / or the inking roller 08 on the frame pivotally, z. In or on a lever mechanism 36; 38 with corresponding levers 37; 39, be stored. The lever 37; 39 may by a drive means 41, for. B. a pneumatic or hydraulic cylinder 41, be adjustable. Preferably, at least the dampening roller 21 is pivotally mounted, wherein the pivot axis S eccentric to the axis of rotation of the operating position located or fixed second dampening roller 22, in particular in the bisector of the two working positions, namely the operating position and the washing position is arranged. Should be in an alternative instead of the dampening roller 21 or in a development additionally the inking roller 08 pivotally mounted (dashed lines in Fig. 1 shown), this is preferably with levers 39 of a lever mechanism 38 substantially about the axis of the upstream adjacent roll 17, z. B. in levers 39, pivotable. The other adjustable rollers 09; 11; 14; 16; 23 may be stored in roller locks (with adjusting cams or the actuators 24). Thus, either the dampening form roller 21 can preferably be pivotably mounted on a lever mechanism 36 about the eccentric axis of rotation of the second dampening roller 22 or alternatively the ink applicator roller 08 on a lever mechanism 38 about the axis of the Reibzylinders 17. As another alternative, both could Rollers 08; 23 be umstellbar, for example, if necessary to bridge a greater distance.

In a third embodiment, the dampening roller 21 and / or the inking roller 08 for the only small arrival / Abstellbewegung in roller locks (with actuator or the actuators 24) stored, the roller locks the dampening roller 21 and / or the inking roller 08 for the implementation of larger adjusting movement to form the bridge in or on levers 37; 39 are stored according to the second embodiment. The storage is z. B. formed so that a pressure-on position and a pressure-off position of the rollers 08; 23 in each case via their radially displaceable roller locks, z. B. by means of actuatable actuators 24 storage takes place while in levers 37; 39 mounted roller (s) 23 (23) for a change between working position (position in the printing operation) and washing position (position in the washing operation) is pivoted or become.

Regardless of the implementation according to one of the three mentioned embodiments are in Fig. 1 the rollers involved in the bridge formation 08 and 23 in their respective working or operating position in the printing operation and in Fig. 2 shown in their washing position in the washing operation.

Fig. 2 shows the convertible dampening roller 21 in its rearranged position, ie its washing position in which it is pivoted from its form cylinder near working position of the forme cylinder 02 and simultaneously from the second dampening roller 22 and in a form and reibzylinderferneren position with the inking roller 08 of the inking unit 06 and the third dampening roller 23 is in contact, so that for example via the rollers 08; 17; 16; 18; 23; 22; 21 is a common roller of the inking unit 06 and the dampening unit 07 is formed so that inking unit 06 and dampening unit 07 together by means of the same washing device 31; 34 or by the use of both washing devices 31; 34 can be washed. Further Inking rollers 09; 11 can - if present - also be involved in the compactor to be washed. As a result of the adjustment, the second dampening roller 22 designed as dampening drive cylinder 22, on which the dampening solution is sprayed in production operation, is set as the last roller 22 in the dampening roller pull train. An otherwise the fluid flow inhibiting "blocking effect" of z. B. made of chrome or Rilsan roller surface of the second roller 22 is thus not here to wear. A sequence of rollers 21 cooperating in a compactor; 22; 23 or the formation of Nippstellen is thus changed by appropriate changes. There is a transformation in the participation in Nippstellen, preferably in both positions, the three rollers 21; 22; 23 form a closed compactor. The switching is preferably carried out remotely by appropriate drive means, for. B. via or by a control device.

In the washing operation, fountain solution can be introduced onto the second roller 22 in an advantageous development by the dampening solution source 19 in order to support the washing process. This can be done in addition to the introduction of detergent through the washing device 34 or in a simplified version instead. The fountain solution serves here additionally or alone as a washing fluid.

During washing, preferably all inking or dampening rollers 08; 09; 11; 21 in the form of cylinder 02 parked position. In this way, washing can take place regardless of the presence of printing plates. Due to the mechanically independent drives can then take place on the forme cylinder 02 at the same time a printing plate change. For this purpose, the forme cylinder 02, regardless of the uniform during washing rotation of the dampening and inking unit train perform the required for the Ab and / or Aufplatten, non-uniform motion program.

As in Fig. 2 indicated by dotted arrows, it may be advantageous for the washing operation be to drive the compactor in reverse to the production mode of rotation.

One or more of the dampening or inking rollers 21; 08; 09; 11, z. B. at least the dampening roller 21 and / or at least one of the inking rollers 08; 09; 11, can be stored in the frame so axially movable in training that they one by the contact to the adjacent dampening cylinder 22 and the distribution cylinder 17; 18 transmitted or by its own the rotation in an axial movement transforming gear generated traversing movement exerts.

Unless otherwise determined for individual examples, the dampening unit 07 or the dampening roller 21 is prewetted in the printing unit 01, d. H. arranged in the printing unit 01 that it or they at least in production in the direction of rotation of the forme cylinder 02 after the nip to the transfer cylinder 03 and before the nip of the first inking roller 08 cooperates with the forme cylinder circumference.

Fig. 3 relates to an example of the execution of a (at least) four double printing units having printing tower 44, the double printing units are each formed by two together with the transfer cylinders 03 acting printing units 01 with dampening units 07 according to the above-described embodiment. Does the printing tower 44 z. B. eight pressure points (printing units 01), it is also referred to as a four-high tower. The double printing units can, as in the present case, be arranged one above the other in a common printing unit 44 (eg dividable in the middle in the region of the printing locations), but also in pairs in two or individually stacked in a printing tower 44 be. It is also possible for two such printing units 44 to be stacked one above the other to form a printing tower having sixteen pressure points. Basically, the inking unit 06 by any, at least one inking roller 08; 09; 11 having inking be formed, corresponds here but in the FIGS. 1 and 2 described type, namely a zonally adjustable film inking unit 06 with two, preferably arranged in parallel in the flow, Reibzylindern 17; 18 and at least two, preferably three inking rollers 08; 09; 11. The four printing cylinder 02; 03 are in pressure-on, preferably with their axes of rotation substantially in a same plane E. The dampening units 07 are preferably each pre-moistening arranged in the printing units 01 of the printing tower 44. In the in Fig. 3 illustrated embodiment are each form cylinder 02 designed as a plate changer full or semi-automatic 42 trained up / Abplatthilfe, which allows a fast and less labor-intensive production change. Also indicated (exemplary in the upper double printing unit) is the formation of a pressure-Ab / -An-sites enabling storage of at least three of the four, in particular all printing cylinder 02; 03, in linear bearing units 43, which allows the radial movement required for the bodies. For the sake of clarity, in Fig. 3 not all of them too Fig. 1 comparable rollers 08; 09; 11; 13; 14; 16; 17; 18 of the inking unit 06 and rollers 21; 22; 23 of the dampening unit 07 referred to, as they correspond recognizable in the roll scheme. Also with regard to the drive configuration and / or the configuration and nature of the rollers 08; 09; 11; 13; 14; 16; 17; 18; 21; 22; 23 is that too Fig. 1 and 2 To apply said in an advantageous embodiment.

Fig. 4 shows a schematic representation of printing units 01 with dampening units 07 according to the embodiments set forth above in a four pairs acting as a double printing units together printing units 01 having printing unit 46. The inking and dampening 06; 07 correspond in their roller scheme - possibly up to small spatial peculiarities - essentially to Fig. 1 and 2 described. Therefore, not all of them became too Fig. 1 comparable rollers 08; 09; 11; 13; 14; 16; 17; 18 of the inking unit 06 and rollers 21; 22; 23 of the dampening unit 07 denotes. The dampening units 07 are here also preferably each pre-moistening arranged in the printing units 01 of the printing unit 46. Unlike the "linear" Double printing units off Fig. 3 are the co-operating printing units 01 with their printing cylinders 02; 03 arranged angled to each other and form an approximately n-shaped lower, and an approximately U-shaped upper double printing - at least the arrangement of the printing cylinder 02; 03 concerns. These two double printing units together form in a same frame the printing unit 46, which is also designated as H printing unit 46 on account of its cylinder arrangement. In this case, two or more of these H printing units 46 can again be stacked to form a printing tower. In the H-shaped embodiment of the printing unit 46, the upper dampening units 07 are preferably from an outer side of the printing unit 46, and the lower dampening units 07 from a provided in the frame between the lower printing units 01 access 51 -. B. a so-called. "Tunnel" - forth operable. For this purpose, the dampening units 07 are arranged in the printing unit 46, that the dampening roller 21 of the externally operable dampening 07 with one of the nearest outside facing side of the forme cylinder 02, and the dampening roller 21 of the internally operated dampening 07 facing with one of the outer side facing Side of the forme cylinder 02 cooperates. As "outside" here that side of the printing unit 01 is understood, which in the longitudinal direction of the printing cylinder 02; 03 (04) runs, that is, the side of the printing unit 01 that is perpendicular to the front side. With respect to the drive configuration and / or the configuration and nature of the rollers 08; 09; 11; 13; 14; 16; 17; 18; 21; 22; 23 too Fig. 1 and 2 This is to be applied in an advantageous embodiment. Deviating from this, however, a pairwise drive of the printing cylinder 02; 03 (04) per printing unit 01, with z. B. on the inking unit 06, z. B. a distribution cylinder 22 of the dampening unit 07, and / or the inking unit 06, z. B. at least one distribution cylinder 17; 18 of the inking unit 06, is driven off.

On the z. In Fig. 5 illustrated embodiment of a printing unit 47, z. B. H-pressure unit 47 is that too Fig. 4 Mentioned except for differences in the design of the inking unit 06 concerned apply. The inking unit 06 is formed here of the type of einwirkigen film inking unit 06, that is, two distribution cylinders 17; 18 are here in the color flow or Compactor arranged serially. With the forme cylinder 02 and / or the cylinder near the cylinder 17 act two inking rollers 08; 09 together, however, as in Fig. 1 and 2 Preferably, the dampening roller 21 with the next dampening ink roller 08 in the manner outlined above are brought into contact with each other and / or a sequence or sequence in the dampening roller is changeable.

In Fig. 6 schematically an example of the arrangement and execution of printing units 01 with dampening units 07 according to the embodiment in a four printing units 01 having execution of a running as a satellite printing unit 48 printing unit 48 is shown. In the illustrated case of a nine-cylinder satellite printing unit 48 are four printing units 01 to a common satellite cylinder 04, in the case of a not shown ten-cylinder satellite printing unit four printing couples 01 pairs arranged around two satellite cylinders 04, with which or which they together form four pressure points in pressure Act. With the form cylinders 02 to act Fig. 1 and Fig. 2 described dampening units 07 together, wherein for the washing operation again at least one roller, in particular the dampening roller 21, is convertible in the aforementioned manner. Again, preferably the dampening roller 21 with the dampening unit next inking roller 08 in the manner outlined above can be brought into contact with each other and / or changed in the (series) sequence in the dampening unit roller train. In the illustrated embodiment, two diametrically opposite dampening units 07 are pre-wetted, and the other two opposite dampening units 07 are arranged on the forme cylinder 02 in a moistening manner. In a further development, the friction cylinders 22, at least the friction cylinders 22 of the moistening dampening units 07 (here right below and top left) each have a second z. B. as a rider roller 49 trained roller 49 in the production direction of rotation considered (see, for example, registered arrows in Fig. 6 ) on the Unfangsabschnitt after applying the dampening solution and prior to its delivery to the dampening form roller 21 assigned. For symmetry reasons, this may also be provided for the two pre-moistening dampening units 07. The inking units 06 can basically be of any type, but with zone-adjustable film dampening units, in particular with at least two friction cylinders 17; 18 (serial or parallel) are preferable. The inking unit 06 shown here corresponds with respect. The roll scheme for reasons of space advantageously substantially that of the printing unit 47 from Fig. 5 , Wherein also an inking unit 06 accordingly Fig. 1 . 2 or 4 can apply.

In an alternative embodiment, not shown, of a nine-cylinder satellite printing unit, the dampening units 07 of all four printing units 01 are pre-moistened, for example by one of the upper and one lower printing units 01, in particular the former diametrically opposite printing group 01, from an outer side of the printing unit 46 , And the dampening units 07 of the other two printing units 01 of a frame provided in the middle approximately access 51 -. B. a so-called. "Tunnel" - forth are operable. For this purpose, the dampening units 07 - comparable to Fig. 4 also arranged here in the nine-cylinder pressure unit such that the dampening roller 21 of the externally operable dampening unit 07 with one of the nearest unit pressure side facing side of the forme cylinder 02, and the dampening roller 21 of the internally operated dampening unit 07 with one of the farther outside and / or the access facing side of the forme cylinder 02 cooperates.

LIST OF REFERENCE NUMBERS

01

printing unit

02

Printing cylinder, forme cylinder, plate cylinder

03

Printing cylinder, transfer cylinder, rubber cylinder

04

Printing cylinder, impression cylinder, satellite cylinder

05

-

06

Inking unit, film inking unit

07

Dampening unit, spray dampening unit

08

Roller, inking roller, inking roller

09

Roller, inking roller, inking roller

10

-

11

Roller, inking roller, inking roller

12

Paint reservoir, ink fountain, paint tray

13

Roller, inking roller, ink fountain roller

14

Roller, inking roller, film roller

15

-

16

Roller, inking roller, ink separation roller

17

Roller, inking roller, distribution cylinder

18

Roller, inking roller, distribution cylinder

19

Dampening solution source, spray bar

20

-

21

Roller, dampening roller, dampening roller

22

Roller, dampening roller, dampening cylinder

23

Roller, dampening roller, rider roller, smoothing roller

24

actuator

25

-

26

drive motor

27

drive motor

28

drive motor

29

drive motor

30

-

31

wash

32

wash-up blades

33

drip tray

34

wash

35

-

36

lever mechanism

37

lever

38

lever mechanism

39

lever

40

-

41

Drive means, pneumatic cylinders, hydraulic cylinders

42

Automatic plate changer / semi-automatic

43

Linear bearing unit

44

Printing tower, printing unit

45

-

46

Printing unit, H printing unit

47

Printing unit, H printing unit

48

Printing unit, satellite printing unit, nine-cylinder satellite printing unit

49

Roller, rider roller

50

-

51

Access

S

swivel axis

e

level

Claims (15)

1. Printing unit of a web-fed rotary printing press having a form cylinder (02), an inking unit (06) interacting in the operating position with the form cylinder (02) and a moistening unit (07) interacting in the operating position with the form cylinder (02), the moistening unit (07) having a moistening agent source (19), and a drum compactor with a roller sequence at least of three moistening unit rollers (21; 22; 23), namely having a first moistening unit roller interacting in the operating position with the form cylinder (02) via a nip point, a second moistening unit roller interacting in the operating position with this via a nip point and a third moistening unit roller (21; 22; 23) interacting with the second in the operating position via a nip point, and where the first moistening unit roller (21) can be thrown off in a washing position of the form cylinder (02) different from the operating position and can be brought into rolling contact with an inking unit roller (08; 09; 11; 14; 16; 17; 18) of the inking unit (06), characterized in that the moistening unit source (19) in the operating position for moistening agent supply interacts with the second moistening unit roller (22) moistening this, and in that the third, form cylinder-remote moistening unit roller (23) is or can be brought into active contact in the operational position with the second moistening unit roller (22) in a circumferential section, which considered in the operational direction of rotation of the second moistening unit roller (22) is situated between the site of a moistening agent application by the moistening agent source (19) and the nip point with the first moistening agent roller (21).
2. Printing unit according to Claim 1, characterized in that at least one of the three moistening unit rollers (21; 22; 23) is mounted movably in a radial direction in the printing unit (01), such that the roller sequence formed by the nip points between the three moistening unit rollers (21; 22; 23) in the operational position in the drum compactor can be brought by reorganization of the nip points between the three moistening unit rollers (21; 22; 23) into a roller sequence of the three moistening unit rollers (21; 22; 23) different from the first-mentioned roller sequence.
3. Printing unit according to Claim 2, characterized in that one or more of the three moistening unit rollers (21; 22; 23) are mounted movably in the radial direction such that the three moistening unit rollers (21; 22; 23) can be brought in both roller sequences into a compactor with reference to a fluid transport.
4. Printing unit according to Claim 2 or 3, characterized in that the three moistening unit rollers (21; 22; 23) can be brought from the roller sequence taken up in the operating position, where the first interacts with the second and the second with the third moistening unit roller (21; 22; 23), into a roller sequence where the first interacts with the third, and the third with the second moistening unit roller (21; 22; 23).
5. Printing unit according to one or more of Claims 2, 3 or 4, characterized in that the third, form cylinder-remote moistening unit roller (23) is or can be brought in the operating position into active contact with the second moistening unit roller (22) in a peripheral section which, considered in the operating direction of rotation of the second moistening unit roller (22), is located between the site of a moistening agent application by the moistening agent source (19) and the nip point with the first moistening unit roller (21).
6. Printing unit according to one or more of Claims 1 to 5, characterized in that the first moistening unit roller (21) is thrown off from the form cylinder (02) and from the second moistening unit roller (22) in a washing position different from the operating position, and is in active contact with the third moistening unit roller (23) and an inking unit roller (08; 09; 11; 14; 16; 17; 18).
7. Printing unit according to one or more of Claims 1 to 6, characterized in that the first moistening unit roller (21) and/or an inking unit roller (08; 09; 11; 14; 16; 17; 18) of the inking unit (06) is mounted movably in the radial direction in the printing unit (01) in such a way that the moistening unit roller (21) and the inking unit roller (08; 09; 11; 14; 16; 17; 18) are out of contact with one another in the operating position and in contact with one another in a washing position different from the operating position.
8. Printing unit according to one or more of Claims 1 to 7, characterized in that in the operation position the nip point of the second with the first moistening roller (22; 23) and the nip point of the second with the third moistening unit roller (22; 21) lie in a half-space which is situated on the side of a notional plane facing the inking unit connecting the axes of rotation of the second moistening unit roller (22) and of the form cylinder (02) and/or in that in the operating position a plane connecting the axes of rotation of the second and third moistening unit rollers (22; 23) with a plane connecting the axes of rotation of the second and first moistening unit rollers (22; 21) together form an angle smaller than or equal to 120° with one another.
9. Printing unit according to one or more of Claims 1 to 8, characterized in that the first moistening unit roller (21) and/or the inking unit roller (08) is mounted, for effecting a throwing on and throwing off movement, in a radial lift-capable roller lock accepting a roller journal, or in a roller lock journal arranged on a swivellable eccentric or lever, rigidly accepting a roller lock.
10. Printing unit according to Claim 9, characterized in that the radial lift-capable roller lock accepting the roller journal of the first moistening unit roller (21) or the eccentric or lever carrying the rigid roller lock is designed with a travel range which, in addition to the throwing on and throwing off on the form cylinder (02), guarantees a bringing of the first moistening unit roller (21) into the position for the washing location.
11. Printing unit according to Claim 9, characterized in that the radial lift-capable roller lock accepting the roller journal of the first moistening unit roller (21) or the eccentric or lever carrying the rigid roller lock is mounted on a lever device (36), by swivelling of which the first moistening unit roller (21) can be brought into the position for the washing location.
12. Printing unit according to one or more of the above Claims, characterized in that the third moistening unit roller (21) is mounted movable radially, in particular in a radial lift-capable roller lock.
13. Printing unit according to one or more of Claims 9 to 12, characterized in that in the radial lift-capable roller lock the journal of the moistening unit roller (21; 23) is adjustable eccentrically against a bearing point of the roller lock accepting the journal.
14. Printing unit according to one or more of the above Claims, characterized in that the moistening unit (07) is designed as a moistening unit (07) contactlessly applying a moistening agent.
15. Printing unit according to one or more of the above Claims, characterized in that the second moistening unit roller (22) is designed as an axially changing moisture distribution cylinder (22) and in particular has a lateral surface of chromium or a hard plastic.

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