EP2195164A1

EP2195164A1 - Printing unit having at least two lateral frame parts the distance of which can be changed relative to each other in a horizontal direction

Info

Publication number: EP2195164A1
Application number: EP08786073A
Authority: EP
Inventors: Thomas Kübert; Bernd Kurt Masuch
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 2007-10-12
Filing date: 2008-07-11
Publication date: 2010-06-16
Anticipated expiration: 2028-07-11
Also published as: EP2195164B1; CN101821100A; DE102007000863A1; US7926420B2; US20100263564A1; WO2009049936A1; CN101821100B; ATE548191T1

Abstract

A printing unit has at least two lateral frame parts. The distance between which can be changed, relative to each other, in a horizontal direction. Each frame part receives a printing group or parts of such a printing group. At least one of the lateral frame parts is displaceably supported for movement between a functional position, in which the lateral frame parts meet and are affixed relative to one another, and an open position in which the lateral frame parts are positioned at a distance from each other. The support of the at least one movable lateral frame part has at least one sliding surface which is made using a composite plastic that is composed of multiple materials.

Description

Printing unit with at least two side frame parts which can be displaced relative to each other in a horizontal direction in a horizontal direction

The invention relates to a printing unit having at least two side frame parts which can be displaced relative to each other in a horizontal direction in a horizontal direction.

WO 2005/037553 A1 discloses a printing unit designed as a printing tower with four stacked double printing units or bridge printing units is known, comprising two relatively movable frame parts, each with two opposite side frame plates, each side frame plate are assigned three centering or locking devices, as Hook can be formed.

WO 2005/037552 A1 discloses a further printing unit designed as a printing tower with four double printing units or bridge printing units arranged one above the other, wherein a frame part movable relative to a stationary frame part is mounted on rollers. The rollers are retractable in a lowered position to support the weight of the movable frame member on a stationary support.

From EP 07 49 369 B1 another, designed as a printing tower printing unit with four stacked double printing or bridge printing works is known with a stationary frame member and a mounted on rollers movable frame member, the frame parts are locked in the operating state.

From EP 17 67 359 A2 a further, designed as a printing tower printing unit with four stacked double printing units is known, wherein two relatively movable frame parts are provided. The printing cylinder of the Double printing units are mounted radially adjustable in linear bearings, which are hydraulically actuated.

DE 601 18 827 T2 discloses a printing unit with separable side parts. The side panels are mounted on shoes provided with an exhaust material.

In the company brochures "semi-finished products from ZEDEX 100", (cover page, pages 3 to 1 1) and "ZEDEX 100 and Tribology" (cover page, pages 15 to 23) material properties of a composite plastic are described. A note for use in printing presses is not included.

The invention has for its object to provide a printing unit with at least two relative to each other in a horizontal direction distance variable side frame parts.

The object is achieved by the features of claim 1.

With a composite plastic good sliding properties are achieved with little wear. Preferably, the low wear is still improved by depressions in the plastic, which can carry away dirt.

Only with the special choice is it possible, e.g. also for large newspaper printing machines to use a simple plain bearing for the storage of positionable side frames.

The proposed in a preferred embodiment of the invention, in particular centrally or z. B. at the center of gravity or approximately in the center of gravity and in the lower frame of the printing unit arranged cylinder-piston assembly supports this exact positioning of the movable side frame part during operation. Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Show it:

Figure 1 is a schematic side view of a printing unit with a stationary side frame part and a distance-variable side frame part.

Fig. 2 is a perspective view of the frame of the printing unit of Figure 1, wherein the viewer facing side frame is not shown.

Figure 3 is a side view of the frame of Figure 2, which also shows the horizontal pitch of the frame ..;

Fig. 4 is a perspective view of a locking device for locking the side frame parts of the printing unit of Figure 1 to 3, as well as a stop for the side frame parts in their functional position.

5 shows a further perspective illustration of the closing device according to FIG. 4, as well as a centering device for the two side frame parts in the functional position;

6 shows a side view of the closing device according to FIGS. 4 and 5 with side frame parts located in the functional position;

Figure 7 is a perspective view of the base of the frame of the printing unit of Figures 1 to 3 and various, arranged at the base components printing unit. Fig. 8 is an enlarged view of Figure 7, which in particular also shows the cylinder-piston assembly for moving the sliding side frame part.

9 shows a detail view of the base according to FIG. 7 from a different direction, which shows in particular a partial view of the guide of the movable side frame part by means of running shoes;

Fig. 10 is a side view of the arrangement of Fig. 9;

Fig. 1 1 is a perspective view of a running shoe from below in a guide according to Fig. 9 or 10;

Fig. 12 is a perspective view of a running shoe carrier in a guide of Fig. 9 or 10;

Fig. 13 is a sectional view through the running shoe carrier of Fig. 12;

FIG. 14 is another view of the running shoe carrier of FIG. 13; FIG.

Figure 15 is a partial perspective view of an alternative embodiment of a guide of the movable side frame part by means of Gleitschuhanordnungen.

FIG. 16 is a side view of the illustration of FIG. 15; FIG.

Fig. 17 is a plan view similar to Fig. 15, but without the slide shoe carrier;

FIG. 18 is a perspective view of a shoe of a shoe assembly of FIG. 15; FIG. FIG. 19 is a top view of the shoe according to FIG. 18; FIG.

Fig. 20 is a side view of the shoe according to Fig. 19;

FIG. 21 shows a further side view of the sliding shoe according to FIG. 19; FIG.

Fig. 22 is a perspective view of the shoe according to FIG. 19 obliquely from below.

Fig. 1 shows in a greatly simplified form schematically a printing unit 01 or printing machine 01, in particular a web-fed rotary printing machine 01 in the form of a printing tower 01, preferably a printing press 01 printing several different inks, with z. B. four in a frame 02 vertically stacked printing units 04, namely double printing units 03, wherein a substrate 05, z. B. a web of material 05, in particular a paper web 05, in the vertical direction, the double printing units 03 passes successively. Each of these double printing units 03 is formed from two printing units 04.

In the example shown, in each double printing unit 03 on both sides of the paper web 05 for perfecting one printing unit 04 with a first cylinder 06 or printing cylinder 06, in particular a printing ink transferred, equipped with at least one blanket transfer cylinder 06 or blanket cylinders 06 and a second cylinder 07 or printing cylinder 07, in particular a rolling on the blanket cylinder 06, one or more printing plates carrying forme cylinder 07 and plate cylinder 07 is arranged. The two blanket cylinders 06 and the two plate cylinders 07 of two opposing printing units 04 of a double printing unit 03 are arranged so that their axes of rotation lie in a plane which is inclined relative to the paper web 05 by preferably 75 ° to 88 °.

Each at least from a blanket cylinder 06 and a plate cylinder 07th existing printing unit 04 is associated with an inking unit 08, for example, a roller inking unit 08 or a short inking unit 08. Furthermore, each printing unit 04 is associated with a dampening unit 09, for example a spray dampening unit 09. If working in a manner not shown in the "dry offset" or "waterless offset printing", no dampening solution and thus no dampening unit 09 is provided and the inking unit 08 may be formed, for example, as pump inking unit 08.

Each printing unit 04 of the printing press 01 has at least one preferably position-controlled, not shown here drive motor. The plate cylinder 07 and the blanket cylinder 06 may be drivingly connected to each other, in particular by means of gears. Alternatively, each blanket cylinder 06 and each plate cylinder 07 may be provided with its own, not shown here drive motor, in such a drive concept, a plate change on a plate cylinder 07 regardless of a plate change on another plate cylinder 07 can be performed.

The printing units 04 or their plate cylinder 07 may be designed to receive a plurality of printing plates in the axial direction, in particular of 2, 3, 4, 5, 6, 7 or 8 printing plates in the axial direction, as well as for receiving one or possibly also for recording of several pressure plates in the circumferential direction, in particular of two pressure plates in the circumferential direction.

In the illustration according to FIG. 1, the rubber cylinder 06 arranged on both sides of the paper web 05 in a double printing unit 03 is set against each other in a so-called rubber-rubber arrangement, so that the rubber cylinders 06 engaged with one another act alternately as an impression cylinder. Alternatively, in a manner not shown, printing units 04 can be combined to form a satellite printing unit, wherein, for example, four printing units 04 in each case are connected to one another by the remaining cylinders 06; 07 separate impression cylinder are arranged, wherein the paper web 05 is guided in each case between at least one employee employed to the impression cylinder transfer cylinder 06 and the impression cylinder.

As indicated in FIG. 1, the printing tower 01 comprises a plurality of, in particular two separable side frame modules 1 1, which can be separated and spaced apart in the horizontal direction in a horizontal direction. 12 or side frame parts 1 1; 12, in particular a machine-fixed or stationary side frame part 1 1 and a side frame part 12 which is displaceable relative thereto, wherein the displaceable side frame part 12 is displaceable along a lower, stationary base 13. Alternatively, both side frame parts 1 1; 12 arranged to be displaceable. At each side frame part 1 1; 12 is in each case a printing unit 04 of a double printing unit 03 together with associated components such as in particular inking unit 08 and possibly dampening unit 09 and not shown here, possibly automatically or semi-automatically working

Plate changing devices or disk magazines arranged. Due to the divisibility of the frame 02, the frame 02 can be opened and corresponding printing unit components are thus optimally accessible for setup, maintenance and possibly repair purposes.

The printing cylinder 06; 07, ie the transfer cylinder 06 or blanket cylinder 06 and the forme cylinder 07 or plate cylinder 07 are each mounted in a bearing unit 14 and a linear bearing 14, wherein preferably both ends of each printing cylinder 06; 07 are mounted in a linear bearing 14. Such a linear bearing 14 supports a printing cylinder 06; 07 for rotation while allowing translation, so a linear travel of the printing cylinder 06; 07, for example, to the plate cylinder 07 from the blanket cylinder 06 z. B. to turn off for the purpose of a plate change. The linear bearings 14 are movable by means of actuators 16 in the form of hydraulic piston 16, which have a common supply, not shown here. For the structure and operation of the known Linear bearing 14 is referenced, for example, to the aforementioned EP 17 67 359 A2.

As can be seen in particular in FIG. 2, in which the side frames facing the viewer are not shown for the sake of clarity, the frame 02 comprises the stationary side frame part 11, whose opposite side frames are fixed to the base 13, and the side frame part 12 displaceably mounted whose opposing side frame parts are slidably mounted on the base 13 and which are rigidly connected to each other by means of a lower, close to the base arranged crossbar 19 for joint movement.

As shown in Fig. 3, at least one of the side frame parts 1 1; 12, preferably all or both side frame parts 1 1; 12, formed divisible in height, in particular along an at least substantially horizontal plane. In principle, in particular depending on the height of the respective printing tower 01, a division into several parts possible, in the case of the present embodiment, however, is a division into two parts 1 1 a; 1 1 b or 12 a; 12b or in two side frame halves 1 1 a; 1 1 b or 12 a; 12b provided, which should be sufficient in the rule to the particular purpose thereby particularly problem-free, simple and cost-saving transportability of the side frame halves 1 1 a; 1 1 b; 12a; To ensure 12b. The side frame halves 1 1 a; 1 1 b or 12 a; 12b are in particular after your transport for mounting to side frame parts 1 1 and 12 firmly connected to each other, for example screwed by bolts.

As is clear from Fig. 3, there is an at least substantially central division of the side frame parts 1 1; 12, so that at least substantially the same side frame halves 1 1 a; 1 1 b; 12a; 12b of at least substantially the same dimensions, which is advantageous in terms of construction and handling technology. The individual side frame halves 1 1 a; 1 1 b; 12a; 12b are each at least substantially box-shaped, with their open side in each case z. B. facing outward. The side frame halves 1 1 a; 1 1 b; 12a; 12b also have various openings 21 for receiving storage facilities of the printing cylinder 06; 07 and peripheral equipment such as inking unit 08 or inking rollers, dampening unit 09 or dampening rollers etc. of the individual printing units 04 on. They are designed so that they can be used according to the needs of the customer for different formats ie the forme cylinder 07 and transfer cylinder 06 with different diameters.

For horizontal movement or displacement of the variable-spacing side frame member 12, a preferably hydraulically working cylinder-piston assembly 22 is provided with a cylinder 23 which is fixed at one of its ends to the base 13 and with a piston rod 24, with one of its ends the movable side frame part 12 is connected, see. Also, Figs. 2, 3, 7, 8 and 15 to 17. The cylinder-piston assembly 22 is, as shown, preferably arranged on the underside of the movable side frame part 12. In detail, the cylinder-piston assembly 22 is at least substantially, preferably exactly centered or z. B. in the load center between the opposite side frame parts 1 1; 12 and the piston rod 24 is connected to a vertically extending pin 26, which in turn is connected to the crossbar 19 of the side frame member 12.

The cylinder-piston assembly 22 is provided with a first end, namely with the z in the illustration. B. Fig. 8 right end, mounted on a bearing device 27, namely a pivot bearing 27 with vertically aligned pivot axis of the base 13 and with a second end, namely with the left in the illustration of FIG. 8, via a further bearing device 28th , namely a pivot bearing 28 also with vertically oriented pivot axis on the movable side frame part 12, ie in the case of the present embodiment in question on the traverse 19, in particular on the at Traverse mounted 19 fastened bolts 26.

As indicated schematically in FIG. 2, a common hydraulic supply 29 is provided for the cylinder-piston arrangement 22 and at least one further hydraulic element, in particular hydraulic unit of the pressure unit 01. In particular, the common hydraulic supply 29 can also supply the actuators 16 or hydraulic pistons 16 of the bearing units 14 or linear bearings 14 (see Fig. 1) and / or the hydraulically actuated closing devices 31 or pivoting clamps 31 (also see FIG. 2) for securing the closed functional position of the side frame parts 1 1; 12. Finally, the common hydraulic supply 29 can supply at least one further, not shown pressure generating device of the printing unit 01.

For mutual fixing of the side frame parts 1 1; 12 in its functional position, ie in that position in which the printing unit 01 is in its production operation, at least one closing device 31 is provided, preferably at least one closing device 31 for each side of the frame 02, ie for each side frame pairing 1 1, 12 it is preferred if at least two closing devices 31 are provided on each side, in particular three closing devices 31 on each side, as shown in FIG. 2, or, in the case of another format to be printed, four closing devices 31 per side. Here, each side frame half 1 1 a; 1 1 b; 12a; 12b each associated with at least one locking device 31. In the case of the illustrated preferred embodiment, the arrangement is such that the lower side frame halves 1 1 b; 12b on each side of the printing unit 01 two closing devices 31 and the upper side frame halves 1 1 a; 12a are each associated with a closing device 31, as can be seen in particular from FIG. In the case of a plurality of closing devices 31, these are preferably arranged vertically above one another. The construction of a preferred embodiment of a closing device 31 results in particular from FIGS. 4 to 6. The closing device 31 comprises a preferably hydraulically actuable, the associated side frame parts 1 1; 12 in the closed functional position biasing cylinder 32, in particular a side frame parts 1 1; 12 in the operating position pulling cylinder 32. Preferably, the closing device 31 comprises at least one pivotable clamping arm 33 which is pivotable from a closed position to a release position and can be arranged at the free end of the piston rod 34 of the cylinder 32.

In particular, the pivotable clamping arm 33 may be rigidly connected to the piston rod 34 of the tensioning cylinder 32, and the piston of the tensioning cylinder 32 may be rotatable about its axis. The pull cylinder 32 is then expediently constructed in a manner known per se such that a part of the stroke of the pull cylinder 32 is used as a rotary stroke for rotating the piston and thus for pivoting the clamping arm 33. The closing device 31 is thus preferably designed as a swing clamp 31.

The locking device 31 further comprises a mounting flange 36 having through holes 37 through which the locking device 31 by means of screws 38 on a side frame part 1 1; 12 or a side frame half 1 1 a; 1 1 b; 12a; 12b is fastened. Preferably, the closing devices 31 and swing clamps 31 on the stationary side frame part 1 1, d. H. the associated side frame halves 1 1 a;

1 1 b attached. At the side opposite in functional position side frame parts 12, d. H. at the associated side frame halves 12a; 12b, then suitable openings 35 and openings 35 may be formed, which penetrates the swing clamp 31 with its piston rod 34, in particular together with clamping arm 33, in the not yet fixed functional position; upon actuation of the pull cylinder 32, the clamping arm 33 is then first pivoted so that it the corresponding side frame part 1 1 or

12 or the corresponding side frame half 1 1 a; 1 1 b; 12a; 12b engages behind, and in the further course of the piston movement is pivoted into its clamping position Clamping arm 33 increasingly pulled toward the cylinder 32, whereby the movable side frame half 12a; 12b increasingly towards the stationary side frame half 1 1 a; 1 1 b is pulled into its closed position or functional position. Additionally, the large cylinder and piston assembly 22 in the subframe assists in accurately positioning the movable side frame member 12 during operation.

The openings 35 preferably have a circumferential, preferably an endless boundary. The openings 35 are preferably in a direction parallel to the axes of rotation of the printing cylinder 06; 07 leading wall (in particular of the edge of the box-shaped side frame parts 1 1; 12 or side frame halves 1 1 a; 1 1 b; 12a, 12b), preferably in the facing on the opposite side frame wall.

On the mounting flange 36 of the swing clamp 31 are further connections 39; 41 formed for the working fluid, in particular the hydraulic oil, which via lines 42; 43 is added or removed. The lines 42; 43 are, as explained above, connected to a common hydraulic supply 29, which also supplies the cylinder-piston assembly 22. Preferably, all closing devices 31 are actuated together.

For lateral guidance or centering of the side frame parts 1 1; 12 in its functional position, at least one centering device 44 is provided which the adjacent side frame parts 1 1; 12 aligns against each other, cf. 2 and 5. In the case of the embodiment shown, the centering device 44 is formed by a prism device 44 which has a receiving part 46 with a prismatically shaped receiving opening 47 on a side frame part 11; 12, z. B. the stationary side frame part 1 1, and an insertion part 48 with a prismatically shaped insertion nose 49 on the other side frame part 1 1; 12, z. B. on the sliding side frame part 12, comprising, wherein the prismatic forms of receiving part 46 and insertion 48th correspond.

The centering device 44 is, as shown in Figure 2, provided only on one side of the printing unit 01 and there at the mutually facing upper end portions of the side frame parts 1 1; 12 above the top or z. B. arranged below the lowermost closing device 31.

For a defined functional position of the two side frame parts 1 1; Furthermore, at least one stop device 51 defining the functional position is provided, cf. z. B. Fig. 2, 4 or 10. Preferably, a plurality of stop devices 51 are provided, in particular stop devices 51 on both sides of the printing unit 01, d. H. on the stone frame parts 1 1; 12 both sides of the printing unit 01. In particular, a plurality of stop devices 51 may be provided on each side of the printing unit 01, for example two stop devices 51 or three or four stop devices 51, depending on the format to be printed. In particular, each closing device 31 may be assigned a stop device 51, preferably assigned such that the respective stop device 51 of the respectively associated closing device 31 is arranged directly adjacent.

Each stop device 51, as shown, two z. B. disc-shaped stop elements 52; 53 include, whose facing surfaces define the stop surfaces and of which one is attached to the side frame part 1 1 and the other on the side frame part 12, for example by means of screws. Each stop device 51 may be formed adjustable or adjustable with respect to their exact stop position, for example in a manner not shown by inserting spacers of different numbers and / or different thickness.

For displaceable mounting of the at least one displaceable side frame part 12 of the frame 02 of the printing unit 01 and the printing tower 01 is on each side of Pressure unit 01 at least one running shoe assembly 54 is provided, see. Fig. 7 to 14. In the case of the embodiment shown, for example, three running shoe assemblies 54 are provided on each side, the z. B. by means of screws 56 on the respective underside of the two opposite or their respective lower side frame half 12 b of the sliding side frame member 12 are fastened. The running shoe assemblies 54 are opposite on the two side supports 57 of the base 13 guide rails 58 are fixed along which run the shoe assemblies 54 and at the same time, as described below, for lateral guidance or adjustment of the movable side frame part 12.

Each running shoe assembly 54 comprises a total of approximately cuboid running shoe support 59, see. in particular Fig. 12 to 14, which is fastened via through holes 60 on the underside of the respective side frame member 12 and which receives a running shoe 61, as it is clear from Fig. 1 1. The running shoe 61 comprises a housing 62 on which two webs 63 with through holes 64 are laterally formed for attachment to the running shoe support 59 or to the underside of the side frame part 12.

In the housing 62 of the running shoe 61, a plurality of rollers 66 are arranged in parallel and, when the running shoe 61 moves, rotate along at least one closed path, which is arranged in a vertical plane which extends in the direction of movement of the displaceable side frame part 12. As is apparent from Fig. 1 1, a plurality of parallel tracks may be provided for a plurality of groups of rotating rollers 66, in particular as shown, two parallel tracks side by side for two groups 67; 68 of rotating rollers 66. The closed path can be defined in each case in a manner not shown, for example, by two opposite guide grooves, in which axially extending stub axles of the rollers 66 are guided. The housing 62 of the running shoe 61 is opened at its bottom side facing the guide bar 58, and the guide track of the rollers 66 is rectilinear in this area, so that the rollers 66 can come into contact with the guide track 58 on their underside and contact the guide track 58 opposite upper side supported on a formed in the housing 62, not shown supporting surface. When moving the sliding side frame member 12, the components then roll in the manner of a rolling bearing to each other.

Each running shoe assembly 54 is associated with at least one scraper 69, which is arranged in anticipation of the rollers 66 of the running shoe 61 to scrape dirt on the surface of the guide rail 58 and thus keep away from the running shoe 61 during movement of the running shoe 61. Preferably, two stripping devices 69 are provided, wherein in each case one stripping device 69 is arranged leading in each case in one of the two directions of running of the running shoe 61 to the running shoe 61.

In particular, the wiper 69 may be disposed on the shoe assembly 54, e.g. The stripping device 69 may in each case be designed as a stripping seal 69 and, for example, consist of an elastically deformable material with at least one arranged in the running plane of the rollers 66 Scraper lip 71. For a particularly effective seal has in the case of the embodiment, each stripping 69 69 seen in the running direction of the running shoe 61 successively arranged scraper lips 71, for example, sealing lips 71.

In addition to the above-described running shoe assemblies 54, one of the two opposing sliding side frame members 12 or both opposing sliding side frame members 12 are located on the underside. preferably only on the one, the centering device 44 supporting side frame member 12, optionally with regard to their position adjustable guide roller carrier 72; 73; 74 attached to which guide rollers 76; 77; 78; 79 are mounted with vertically arranged axis of rotation, which are supported on both sides of the guide rail 58 at its narrow side and thus allow a guide or adjustment of the movably mounted side frame part 12. The guide roller carrier 72 carries an internally arranged guide roller 76, the guide roller carrier 73 an outwardly disposed guide roller 77 and the guide roller carrier 74 both an internally arranged guide roller 78 and an externally arranged guide roller 79th

An alternative to the above-described storage of the displaceable side frame member 12 by means of running shoes 61 type of storage, namely a storage by means of sliding shoes 82, will be described below with reference to FIGS. 15 to 22.

For slidably supporting the at least one displaceable side frame part 12 of the frame 02 of the printing unit 01 or the printing tower 01, a sliding shoe arrangement 81 is provided on each side of the printing unit 01, each with at least one sliding surface 88, preferably made of plastic. In the case of the embodiment shown, for example, three sliding shoes 82 are provided on each side of the printing unit 01, which are held in a common Gleitschuh- carrier 83, the z. B. by means of screws 84 on the respective underside of the two opposite or their respective lower side frame half 12 b of the sliding side frame member 12 is fastened. The sliding surface 88 can also be screwed or glued directly. The sliding shoe assembly 81 opposite to the two side supports 57 of the base 13 guide rails 58 are fixed along which run the Gleitschuhanordnungen 81 and at the same time, as described below, for lateral guidance or adjustment of the movable side frame part 12. Each slide shoe 82 is accommodated in a recess of the slide shoe carrier 83 shaped in accordance with the shape of the slide shoe 82 and, as is apparent in particular from FIGS. 18 to 22, at least approximately plate-shaped. The shoe 82 has a Gleitschuhbasis 86 and a mounted on the Gleitschuhbasis 86, for example glued, in particular made of high-slip plastic sliding layer 87 which defines the sliding surface 88. The downwardly facing sliding surface 88 of the slide shoe 82 projects in the installed state of the slide shoe 82 down over the underside of the slide shoe carrier 83, so that only the slide shoes 82, but not the slide shoe carrier 81 touch the surface of the guide bar 58.

The plastic of high lubricity used as the material for the sliding layer 87 preferably has a coefficient of friction between 0.02 and 0.40 at a surface pressure of between 1.0 and 4.0 N / mm ² and a temperature of 25 ° C., in particular a coefficient of friction between 0.04 and 0.30 at a surface pressure between 0.5 and 4.0 N / mm ² and a temperature of 25 ° C, more preferably a coefficient of friction between 0.06 and 0.12 at a surface pressure between 0.3 and 4.7 N / mm ² and a temperature of 25 ° C. It is further preferred if the plastic material has a tensile strength between 30 and 100 N / mm ² , in particular between 45 and 75 N / mm ² . Finally, a preferred plastic material has a wear factor at 20 ° C of less than 0.2 mm / 100 km, preferably a wear factor at 20 ° C of less than 0.1 mm / 100 km, in particular a wear factor at 20 ° C of less than 0.05 mm / 100 km.

A suitable as a plastic material for the sliding layer 87 material may in particular be a structural plastic, which may preferably be formed as, having multiple materials, composite plastic and should preferably be maintenance-free and wear-resistant. Preferably, the plastic comprises one component of thermoplastic polyester and another component has a rubbery character with high elasticity. A suitable material is under the name ZEDEX known and commercially available, here in particular under the name ZX-100, preferably ZX-100A, or in particular Uniform 2000 gray blue, which has the preferably desired properties in a high degree.

Each of the sliding shoes 82 may have a sliding surface 88, for example between 20 and 1000 cm ² , preferably between 40 and 400 cm ² , in particular of 100 cm ² +/- 50%. In the sliding surface 88 depressions 89 may be formed for receiving impurities in order to avoid as much as possible caused by contamination wear or a reduction in the lubricity. The depressions 89 may in particular be groove-shaped or groove-shaped and, as shown, cover the sliding surface 88 in the form of a net. In particular, the longitudinal extent of the recesses 89 can extend obliquely to the direction of displacement of the movable side frame part 12 to z. B. an automatic emptying of the recesses 89 to allow, and in particular with the displacement direction include an angle of 45 °. It is particularly preferred if, as shown for example in FIG. 19, the sliding surface 88 has a grid of intersecting groove-shaped depressions 89, which run obliquely to the direction of displacement of the side frame part 12.

It is preferred if the depressions 89 of the sliding surface 88 occupy a relatively large area fraction of more than 10% of the sliding surface 88, preferably of more than 20%, in particular an area fraction of between 25% and 35%, for example in the case of the preferred embodiment an area share of

30% +/- 3%.

For lateral guidance or adjustment of the movable side frame member 12 are at the bottom of one or both sliding side frame parts 12, preferably only on the centering device 44 supporting side frame member 12, optionally positionally adjustable guide roller support 92; 93; 94 attached to which guide rollers 96; 97; 98; 99 are mounted with vertically arranged axis of rotation, which are supported on both sides of the guide rail 58 at its narrow side and thus allow a guide or adjustment of the movably mounted side frame part 12, cf. in particular FIG. 17. The guide roller carrier 92 carries an internally arranged guide roller 96, the guide roller carrier 93 has an externally arranged guide roller 97 and the guide roller carrier 94 has both an internally arranged guide roller 98 and an externally arranged guide roller 99.

LIST OF REFERENCE NUMBERS

01 printing unit, printing machine, web-fed rotary printing press, printing tower

02 frame

03 double printing unit

04 printing unit

05 substrate, web, paper web

06 cylinder, printing cylinder, transfer cylinder, rubber cylinder

07 cylinder, printing cylinder, forme cylinder, plate cylinder

08 inking unit, roller inking unit, short inking unit, pump inking unit

09 dampening unit, spray dampening unit

10 -

1 1 side frame module, side frame part

12 side rack module, side rack section

13 base

14 bearing unit, linear bearing

15 -

16 actuator, hydraulic piston

17 -

18 -

19 traverse

20 -

21 opening

22 cylinder-piston arrangement

23 cylinders

24 piston rod

25 -

26 bolts

27 Bearing device, swivel bearing Bearing device, swivel bearing Hydraulic power supply - locking device, swivel clamp Cylinder, pull cylinder Clamping arm Piston rod Opening, breakthrough Mounting flange Through hole Screw Connection - connection Line Cable Centering device, prism device - receiving part Inlet opening Insertion lug - stop device Stop element Stop element Running shoe arrangement - screw Carrier Guide Rail Running Shoe Through Hole Shoe Housing Stem Through Hole - Roller Group (66) Group (66) Scraper, Scraper Seal - Scraper Lip, Sealing Lip Guide Roller Carrier Guide Roller Carrier Guide Roller Carrier - Guide Roller Guide Roller Guide Roller Guide Roller - Slide Shoe Assembly Slide Shoe Slide Shoe Carrier Screw - 86 shoe base

87 sliding layer

88 sliding surface

89 deepening

90 -

91 -

92 guide roller carrier

93 guide roller carrier

94 guide roller carrier

95 -

96 leadership role

97 leadership role

98 leadership role

99 leadership role

1 1 a part, side frame half 1 1 b part, side frame half

12a part, side frame half 12b part, side frame half

Claims

claims

1. printing unit (01) with at least two relative to each other in a horizontal direction adjustable side frame parts (1 1; 12), each receiving a printing unit (04) or parts of a printing unit (04) and of which at least one side frame part (12) between a Functional position in which the side frame parts (1 1, 12) are brought together and fixed against each other, and an opening position in which they are spaced apart, is slidably mounted, wherein the mounting of the at least one movable side frame part (12) at least one sliding surface (88) made of plastic, characterized in that the plastic is a composite material comprising a plurality of materials.

2. Printing unit according to claim 1, characterized in that at least one sliding shoe (82) comprises the sliding surface (88) made of plastic.

3. Printing unit according to claim 2, characterized in that the sliding block (82) comprises a sliding block base (86) and a sliding layer (87) fixed to the sliding block base (86).

4. Printing unit according to claim 3, characterized in that the sliding layer (87) consists of plastic.

5. Printing unit according to claim 1, characterized in that the plastic has a coefficient of friction between 0.02 and 0.40 at a surface pressure between 1, 0 and 4.0 N / mm ² and a temperature of 25 ° C.

6. Printing unit according to claim 5, characterized in that the plastic has a coefficient of friction between 0.04 and 0.30 at a surface pressure between 0.5 and 4.0 N / mm ² and a temperature of 25 ° C.

7. Printing unit according to claim 6, characterized in that the plastic has a coefficient of friction between 0.06 and 0.12 at a surface pressure between 0.3 and 4.7 N / mm ² and a temperature of 25 ° C.

8. Printing unit according to one of claims 2 to 7, characterized in that the plastic has a tensile strength between 30 and 100 N / mm ² , in particular between 45 and 75 N / mm ² .

9. Printing unit according to one of claims 2 to 8, characterized in that the plastic has a wear factor at 20 ° C of less than 0.2 mm / 100 km.

10. Printing unit according to claim 9, characterized in that the plastic has a wear factor at 20 ° C of less than 0.1 mm / 100km.

1 1. Printing unit according to claim 10, characterized in that the plastic has a wear factor at 20 ° C of less than 0.05 mm / 100km.

12. Printing unit according to claim 1, characterized in that the plastic is a construction plastic.

13. Printing unit according to claim 1 or 12, characterized in that the plastic comprises a component of thermoplastic polyester.

14. Printing unit according to claim 1 or 12, characterized in that the plastic has a component with rubbery character with high elasticity.

15. Printing unit according to claim 2, characterized in that the at least one sliding shoe (82) is arranged on the underside of the displaceable side frame part (12).

16. Printing unit according to claim 1, characterized in that the at least one sliding surface (88) has an area between 20 and 1, 2000 cm ² .

17. Printing unit according to claim 16, characterized in that the at least one sliding surface (88) has an area between 40 and 400 cm ² .

18. Printing unit according to claim 17, characterized in that a sliding surface (88) has an area of 100 cm ² +/- 50%.

19. Printing unit according to claim 1, characterized in that the movable side frame part (12) has two opposing side frame parts (12) and that each side frame part (12) is assigned at least one sliding block (82).

20. A printing unit according to claim 1 or 19, characterized in that each movable side frame part (12) with respect to the direction of displacement at least two or three spaced sliding surfaces (88).

21. Printing unit according to claim 1 or 19, characterized in that each bweglichem side frame part (12) are associated with at least two sliding shoes (82).

22. Printing unit according to claim 21, characterized in that each side frame part (12) are associated with three sliding shoes (82).

23. Printing unit according to one of claims 19 to 22, characterized in that the sliding shoes (82) respectively on the underside of the side frame part (12) can be fastened.

24. Printing unit according to claim 1, characterized in that in the sliding surface (88) recesses (89) are formed for receiving impurities.

25. Printing unit according to claim 24, characterized in that the depressions (89) are groove-shaped or groove-shaped.

26. Printing unit according to claim 24 or 25, characterized in that the recesses (89) cover the sliding surface (88) reticulated.

27. Printing unit according to one of claims 24 to 26, characterized in that the longitudinal extension of the recesses (89) extends obliquely to the direction of displacement of the displaceable side frame part (12).

28. Printing unit according to one of claims 23 to 26, characterized in that the sliding surface (88) has a grid at intersecting groove or groove-shaped depressions (89) which extend obliquely to the direction of displacement of the displaceable side frame part (12).

29. Printing unit according to one of claims 24 to 28, characterized in that the recesses (89) with the displacement direction form an angle of 45 °.

30. Printing unit according to one of claims 24 to 30, characterized in that the recesses (89) occupy an area ratio of more than 10% of the sliding surface (88) to complete.

31. Printing unit according to claim 30, characterized in that the depressions (89) take up an area fraction of more than 20% of the sliding surface (88).

32. Printing unit according to claim 31, characterized in that the recesses (89) occupy an area fraction between 25% and 35% of the sliding surface (88).

33. Printing unit according to claim 32, characterized in that the recesses (89) occupy a surface portion 30% +/- 3% of the sliding surface (88).

34. Printing unit according to claim 1, characterized in that the sliding surface (88) contacting guide strips (58) are arranged, that the sliding surfaces (88) on both lateral supports (57) of the base (13) guide strips (58) are arranged opposite one another.

35. Printing unit according to claim 34, characterized in that for the lateral guidance of the movable side part (12) at least one guide roller carrier (92; 93; 94) is arranged, that on the guide roller carrier (92; 93; 94) guide rollers (96; 98, 99) are mounted with a vertical axis of rotation.

36. Printing unit according to claim 35, characterized in that the guide rollers (96; 97; 98; 99) are arranged on both sides of the guide strip (58) on the narrow side thereof supporting.

37. Printing unit according to one of the preceding claims, characterized in that exactly two distance-variable side frame parts (1 1, 12) are provided.

38. Printing unit according to one of the preceding claims, characterized in that one of the side frame parts (1 1; 12) is formed stationary.

39. Printing unit according to claim 38, characterized in that exactly one side frame part (12) relative to the stationary side frame part (1 1) is formed variable in distance.

40. Printing unit according to one of the preceding claims, characterized in that the printing unit (01) is designed as a printing tower (01).

41. Printing unit according to one of the preceding claims, characterized in that a plurality of superimposed printing units (04) are provided.

42. Printing unit according to claim 41, characterized in that the superimposed printing units (04) as double printing units (03) are formed.

43. Printing unit according to claim 42, characterized in that the printing unit (01) at least substantially in the plane of contact of the abutting transfer cylinder (06) of the double printing units (03) is divisible.

44. Printing unit according to claim 1, characterized in that in each side frame part (1 1, 12) in each case at least four printing units (04) are arranged one above the other.

45. Printing unit according to claim 1, characterized in that the printing unit (01) is designed as a printing tower (01) with four stacked double printing units (03), wherein a side frame part (1 1) stationary and a side frame part (12) is designed to be movable.