EP1492673A1

EP1492673A1 - Printing units

Info

Publication number: EP1492673A1
Application number: EP03727175A
Authority: EP
Inventors: Oliver Frank Hahn
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 2002-04-06
Filing date: 2003-04-03
Publication date: 2005-01-05
Also published as: WO2003084751A1; AU2003233926A1

Abstract

The invention relates to a printing unit comprising at least two pairs each consisting of two cylinders (16, 17), namely of a transfer cylinder (17) and of an associated form cylinder (16) having a circumference that corresponds to at least two printed pages situated one behind the other in the circumferential direction. In a printing on-position, the transfer cylinders interact with a shared printing cylinder while forming a print position. The cylinders of two diametrically opposite pairs are each arranged so that, in the printing on-position, their rotation axes (R16, R17) are located together with the rotation axis (R18) of the printing cylinder in a common plane (G).

Description

description

printing units

The invention relates to printing units according to the preamble of claim 1, 6, 23 or 24.

DE 25 28 008 A1 shows a printing machine for a direct printing process with forme cylinders which can be equipped with six printing plates in the axial direction and with two printing plates in the circumferential direction, and with impression cylinders which can be occupied with three in the axial direction and with a printing felt in the circumferential direction. Both the side-by-side printing plates and the side-by-side printing felts are each offset in the circumferential direction.

DE 101 14 347 A1 discloses a satellite printing unit with four printing units that can be set on a common impression cylinder. In all printing units, in the direction of rotation of the forme cylinder reflecting the web run, a dampening unit and then an inking unit interact with the forme cylinder after the nip between the forme and transfer cylinders.

WO 01/39974 A2 discloses a pair of cylinders, namely a form cylinder and a transfer cylinder, of double circumference. In a variant, the cylinders can be made three times wide, the elevators on the transfer cylinder being alternately offset from one another.

A printing unit is known from DE 198 03 809 A1, the forme cylinder of which has one circumferential circumference and a plurality of printing plates in the longitudinal direction. A transfer cylinder cooperating with the forme cylinder has a double circumference and is circumferential with a printing blanket and in Longitudinal direction with two, but offset in the circumferential direction to each other arranged blankets.

JP 10071 694 discloses printing group cylinders with four channels arranged next to one another and offset in the circumferential direction from one another. The printing unit cylinders have a so-called double circumference.

CH 345906 discloses a device for the bumpless printing process, joints of four lifts arranged next to one another on transfer cylinders of double circumference and lugs of four lifts arranged next to one another on a forme cylinder of double circumference being arranged offset to one another.

A double printing unit is known from DE 198 15294 A1, the axes of rotation of the printing unit cylinders being arranged in one plane. The cylinders have four times the width of a newspaper page (double width) and a circumference of one height of a newspaper page. The transfer cylinders have endless sleeves which can be exchanged laterally through openings in the side wall.

The invention has for its object to provide printing units.

The object is achieved by the features of claim 1, 6, 23 or 24.

The advantages that can be achieved with the invention consist in particular in that the measures create a compact, low-vibration and / or robust printing unit. It is also characterized by particularly good color registers.

The minimization of the number of parts that can be moved in normal operation and during set-up, e.g. B. the waiver of the movement of all cylinders, by Frame walls, bearings, etc., ensure the robust and inexpensive construction.

With the linear arrangement of the printing unit cylinders, i. H. the arrangement of the axes of rotation of the printing unit cylinders in the print-on position essentially in one plane, the cylinders support each other. This reduces relative cylinder deflection. It is even possible to compensate the bending line (static) of the forme cylinder and the transfer cylinder with respect to one another.

In the case of a triple-width printing unit, there are also advantages in that compared to a double-width printing press, with the same target thickness of a product that can be achieved, production reliability is considerably increased. If the number of printing units is retained, the output of the printing press or of each printing unit can be increased by 50%.

The number of reel changers (investment), the frequency of reel changes (production security) and the set-up time when drawing webs (cycle times) can be reduced compared to a double-wide press for the same product thickness.

In an advantageous embodiment, the printing units are designed as nine-cylinder satellite printing units, which on the one hand results in high precision in the color register and on the other hand results in a low-vibration design. Vibrations are also reduced by the advantageous arrangement, design and attachment of elevators on the cylinders. On the one hand, openings on the lateral surfaces are minimized in the circumferential direction. Furthermore, at least on the transfer cylinder, the openings can be arranged so as to be alternately offset in the circumferential direction in such a way that at least over a section length there is always a closed outer surface with the shape or Satellite cylinder works together. The drive of the satellite cylinder (s), which is mechanically independent of the cylinder pairs, has particular advantages with regard to the possibility of variable operation. For example, set-up during production, e.g. B. a flying change of printing form or washing. Conversely, a path can be drawn in while other cylinders or pairs of cylinders are stationary or are undergoing a set-up program. It is also advantageous if rubber blankets with positive or negative promoting properties are present to operate the satellite cylinder with a surface speed that is different from the other cylinders.

The arrangement of the inking and dampening units results in a highly symmetrical design of the printing unit. On the one hand, this benefits planning and production, on the other hand, this arrangement offers the operator and / or the automatic supply considerable advantages.

Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

Show it:

1 is a side view of a web-fed rotary printing press;

2 shows a schematic front view of a printing unit;

3 shows a schematic top view of a triple-wide printing unit of a first embodiment;

4 shows a schematic top view of a triple-wide printing unit of a second embodiment; 5 shows an exemplary embodiment for an elevator of a cylinder;

Fig. 6 shows a first embodiment for driving a nine-cylinder satellite printing unit;

Fig. 7 shows a second embodiment for driving a nine-cylinder satellite printing unit;

Fig. 8 shows a third embodiment for driving a nine-cylinder satellite printing unit;

The web-fed rotary printing press shown by way of example in FIG. 1 has a left and a right section, each with at least two printing towers 01. The printing towers 01 have printing units 02 which, for. B. at least three times wide, d. H. for printing six newspaper pages arranged axially next to each other. The printing units 02 are designed as satellite printing units 02. The advantageous design of the printing units 02 as nine-cylinder satellite printing units 02 ensures a very good registration or a low fan-out. The printing units 02 can, however, also be used as ten-cylinder satellite printing units 02 or, if appropriate, also as printing units operable in rubber-to-rubber printing, such as, for. B. several bridge printing units or an H-printing unit 02 can be executed. The printing units 02 are fed webs 03 of rolls, not shown, in particular using roll changers.

Downstream of a web 03 passing through the printing towers 01 or printing units 02, here above the printing towers 01, a superstructure 04 is provided in each section, in which the web 03 or webs 03 cut on longitudinal cutting devices 06, partial webs may be offset by turning devices 07 and / or overturned, are aligned with one another in the longitudinal register by means of register devices 08, which are only indicated in FIG. 1 and can be guided one above the other. Downstream in the web running direction, the superstructure 04 has at least one so-called harp 09 with a number of superposed harp or idler rollers guiding the webs 03 or partial webs 03. The harp 09 determines the hopper inlet of the webs 03 one above the other. The web 03 experiences a change of direction via this harp 09 and is then combined either as one strand or as several strands and fed to at least one folding structure 11.

In the example, two folding structures 11 are arranged between the sections, which z. B. each arranged on two different levels one above the other. However, the printing press can also have only one common fold structure 11 arranged between the sections, or else only one section and an associated fold structure 11. The respective fold structure 11 can also be designed with only one level of formers. One or more folders 12 are assigned to each folder structure 11.

The printing unit 02 has several, in the example four, printing units 13, by means of which ink can be applied to the web 03 from an inking unit 14 via at least one cylinder 16 designed as a forme cylinder 16 (FIG. 2). In the present example for an embodiment of the printing unit 02 as a satellite printing unit 02, the printing unit 13 is designed as an offset printing unit 13 for the wet offset and, in addition to the inking unit 14, has a dampening unit 20 and a further cylinder 17 designed as a transfer cylinder 17. The transfer cylinder 17 forms a pressure point with a pressure cylinder 18 forming an abutment. In the example in FIG. 1, the printing cylinder 18 is designed as a satellite cylinder 18 which, together with further transfer cylinders 17, forms further printing points 13 in the printing-on position. The printing cylinder 18 could also be designed as a transfer cylinder when the printing units are designed as double printing units in rubber-counter-rubber printing. The same parts are given the same reference numerals, unless this is necessary to distinguish them. However, there may be a difference in the spatial location and remains the same in the case of award Reference characters are usually not taken into account.

In an advantageous embodiment, the inking unit 14 has an ink fountain 15 which extends over six printed pages. In another embodiment, three ink fountains 15, each approximately two printed pages wide, are arranged side by side in the axial direction. The dampening unit 20 is designed in an advantageous embodiment as a four-roller spray dampening unit 20 (not shown in this way).

In a first embodiment, the forme cylinder 16 has, for. B. a circumference between 850 and 1,000 mm, in particular from 900 to 940 mm. The scope is e.g. B. to accommodate two standing pages, z. B. newspaper pages in broadsheet format, by means of two elevators 19, z. B. flexible printing forms 19, formed. The printing formes 19 can be mounted on the forme cylinder 16 in the circumferential direction and, in the embodiment shown in FIG. 3, can be replaced individually as a single printing plate equipped with a printing side in the axial direction.

The length L16 of the usable bale of the forme cylinder 16 in the first embodiment is, for. B. 1,850 to 2,400 mm, in particular 1,900 to 2,300 mm and is in the axial direction for receiving z. B. dimensioned at least six adjacent printed pages, in particular newspaper pages in broadsheet format, (see Fig. 3, sections A to F). It is u. a. Depending on the type of product to be manufactured, whether only one print page or several print pages are arranged next to one another in the axial direction on a printing form 19. In an advantageous wider variant of the first embodiment, the length L16 of the usable bale is between 2,000 and 2,400 mm.

In a second embodiment, the forme cylinder 16 has z. B. a circumference between 980 and 1,300 mm, in particular from 1,000 to 1,200 mm. The length L16 of the usable bale is z. B. 1,950 to 2,400 mm, in particular 2,000 to 2,400 mm. The assignment corresponds to the above version. The transfer cylinder 17 also has a circumference in the first embodiment, for. B. between 850 and 1,000 mm, in particular from 900 to 940 mm. The length L17 of the usable bale of the transfer cylinder 17 is z in the first embodiment. B. 1,850 to 2,400 mm, in particular 1,900 to 2,300 mm, and is in the longitudinal direction next to each other z. B. with three elevators 21, z. B. blankets 21, occupied (sections AB to EF). They extend in the circumferential direction essentially around the full circumference. The rubber blankets 21 have a favorable influence on the vibration behavior of the printing unit 13 during operation, alternating, for. B. by 180 °, offset from each other (Fig. 3). In the wider version of the first version, the length L17 of the usable bale is also between 2,000 and 2,400 mm.

In the second embodiment, the transfer cylinder 17 has z. B. a circumference between 980 and 1,300 mm, in particular from 1,000 to 1,200 mm. The length L17 of the usable bale is z. B. 1,950 to 2,400 mm, in particular 2,000 to 2,400 mm. The assignment with elevators 21 corresponds to the first embodiment.

Diameter of bales of cylinders 16; 17 are in the first o. G. Execution z. B. from 270 to 320 mm, in particular from about 285 to 300 mm. In the second above Execution is the diameter of bales of cylinders 16; 17 z. B. from about 310 to 410 mm, in particular from 320 to about 380 mm. A ratio of a usable barrel length of cylinders 16; 17 to their diameter should be 5.8 to 8.8, z. B. at 6.3 to 8.0, in a broad version in particular at 6.5 to 8.0.

As length L16; L17 of the usable bale is to be understood here as the width or length of the bale which is used to accommodate lifts 19; 21 is suitable. This corresponds approximately to a maximum possible web width of a web 03 to be printed. Relative to an entire length of the bale of the cylinders 16; 17 would be L16 to this length; L17 of the usable bale is the width of any existing bale Bearings, from possibly existing grooves and / or from possibly existing lateral surface areas, which z. B. must be accessible for the operation of clamping and / or clamping devices.

In an advantageous embodiment, the satellite cylinder 18 also essentially has the stated dimensions and ratios of at least the assigned transmission cylinder 17.

The forme cylinder 16 and the transfer cylinder 17 have on their circumference in the circumferential direction on the lateral surface at least one fault, for. B. an interruption 28; 29 in the surface area effective when unrolling. This interruption 28; 29 can be a joint of a leading and a trailing end of one or more elevators, which are arranged, for example, by means of magnetic force or integrally on the circumference. However, as illustrated below in the exemplary embodiments, openings 28; 29 of channels 27; 30 or slots 27; 30 act, the ends of elevators 19; Record 21. The following as openings 28; Disturbances designated 29 are synonymous with other interruptions 28; 29 on the effective surface area, d. H. the outward surface of the elevators 19; 21 provided cylinder 16; 17th

In the exemplary embodiment according to FIG. 3, the forme cylinder 16 has two openings 28 one after the other in the circumferential direction. In the longitudinal direction of the forme cylinder 16, several of these openings 28, for. B. three two-lift width or six one-lift width, in alignment with each other, or an opening 28 extending across the width of all the lifts arranged side by side. The transfer cylinder 17 has at least two openings 29. These two openings 29 are arranged one behind the other in the longitudinal direction of the cylinder 17 and offset in relation to one another in the circumferential direction. In the example, three openings 29 are arranged alternately to one another. In each escape one of the openings 29 thus exists an undisturbed area on the lateral surface.

Assign the cylinders 16; 17 is only one length, which essentially corresponds to two widths of a newspaper page, the transfer cylinder 17 has only two channels 30 or openings 29 which are offset in the circumferential direction and arranged one behind the other in the longitudinal direction.

The openings 28; 29 (and associated channels 27; 30) are thus mutually on the two cylinders 16; 17 arranged that when the two cylinders 16; 17 at a full revolution of the two cylinders 16; 17 never two openings 28; 29 on the whole with elevators 19; 21 unrolled length. At least on one of the cylinders 16; 17, here the transfer cylinder 17, always remains at least one closed section when the openings of the forme cylinder 16 pass through the nip point. The offset of the channels 27; 30 or openings 28; 29 in the circumferential direction is preferably approximately 180 °.

In a second exemplary embodiment for the arrangement of the faults or the openings 28; 29 in the region of the effective lateral surfaces, elevators 19 arranged side by side on the forme cylinder 16 are offset from one another in the circumferential direction (FIG. 4). The openings 28 of the central sections C and D are offset here, for example, in the circumferential direction by 90 ° to the openings 28 of the remaining sections A, B, E and F. However, one section can alternately always be offset by 90 ° to the next. The openings 29 of the transfer cylinder 17 are offset from one another in the circumferential direction to match the design of the forme cylinder 16. For example, the opening 29 of the central section CD is offset by 90 ° with respect to the openings 29 of the other sections AB, EF. The cylinders 16; 17 and the openings are in relation to one another such that always one of the openings 28 arranged one behind the other on the forme cylinder 16 on the opening 29 of the relevant section AB; CD; EF of the transfer cylinder 17 rolls. Simultaneously with the passage of two openings 28; 29 on top of each other, there is always at least one section in which closed surfaces of the two cylinders 16; 17 roll on top of each other.

In each escape one of the openings 28; 29 there is therefore an undisturbed area on the lateral surface of the respective cylinder 16; 17th

The three cylinders 16; 17; 18 are now arranged so that their axes of rotation R16; 17; 18 lie in a common plane G in the print-on position AN. If the satellite cylinder 18 has two printing points on its circumference, then a second printing unit, not shown in FIG. 2, is preferably likewise arranged in the common plane G (see FIGS. 6 to 8).

The elevators 19; 21 are shown schematically in FIG. B. designed as flexible plates, the elevator 21 designed as a rubber blanket 21 being designed as a so-called. Metal printing blanket 21 with an elastic and / or compressible layer 22 (dashed lines) arranged on a carrier plate 23 (in FIG. 5 these are the metal printing blanket alone) 21 relevant reference numerals with dashed lines). A plate-shaped printing form 19 or a carrier plate 23 for a rubber printing blanket usually consists of a flexible, but otherwise dimensionally stable material, e.g. B. made of an aluminum alloy, and has two opposite, in or on the cylinder 16; 17 ends 24 to be fastened; 26 with a material thickness MS of z. B. 0.2 mm to 0.4 mm, preferably 0.3 mm, these ends 24; 26 for training as hanging legs 24; 26 each along a bending line in relation to the stretched length I of the elevator 19; 21 by an angle α; are bent between 40 ° and 140 °, preferably 45 °, 90 ° or 135 ° (Fig. 4). A leading end 24 is, for example, bent at an acute angle α of 40 ° to 50 °, in particular 45 °, and a trailing end 26 at an angle β of 80 ° to 100 °, in particular 90 °. If in the circumferential direction of the cylinder 16; 17, in particular of the transfer cylinder 17, only a single elevator 21 is applied, the length I of the elevator 21 corresponds almost to the circumference of this cylinder 17. Basically, the bent ends 24; 26 of the elevators 19; 21 now each in a on the circumference of the respective cylinder 16; 17 in the longitudinal direction axially parallel, slot-shaped opening 28; 29 insertable, the ends 24; 26 can be held, for example, by their shape, friction or deformation. However, they can also be fixed additionally by means which can be actuated by spring force, by pressure medium or by a centrifugal force which is effective during operation. The slot-shaped openings for pressure plates 19 arranged side by side in the axial direction on the forme cylinder 16 are in one of the above-mentioned embodiments (FIG. 3) each in alignment, for. B. arranged as a continuous slot-shaped opening 28, while the openings 29 for the rubber blankets 21 arranged next to each other on the transfer cylinder 17 are not continuous, but are alternately offset in the circumferential direction by 180 °.

In an advantageous embodiment, the four printing units 13 are aligned with one another in such a way that the, in particular corresponding, openings 29 of the diametrically opposite transfer cylinders 17 simultaneously pass through the nip point to the satellite cylinder 18. The printing units 13 are advantageously arranged such that the four nip points are arranged equidistantly around the satellite cylinder in the print-on position. The satellite cylinder 18 advantageously has essentially the same effective scope (apart from processing-related deviations of up to ± 0.2%) as the transfer cylinder 16, or at least an integer multiple greater than 1 half the size of the transfer cylinder 16.

In the following FIGS. 6 to 8, various advantageous drive configurations are shown on a nine-cylinder printing unit 01 in conjunction with the above. arranged openings 28; 29 and / or the linear arrangement of the cylinders 16; 17; 18 shown.

The two printing units 13 diametrically opposite each other around the satellite cylinder 18 are each arranged in such a way that the axes of rotation R16; R17 whose cylinder 16; 17 together with the axis of rotation R18 of the satellite cylinder 18 in pressure Position in a common plane G. This applies advantageously to both pairs of opposing printing units 13

In an advantageous embodiment, the cylinders 16; 17; 18 of the printing unit 02 is driven in such a way that the printing units 13 of the printing unit 02 can each be driven in rotation by at least one drive motor 31 which is mechanically independent of the other printing units 13. In the case of the satellite printing unit 02, the satellite cylinder 18 can also be driven mechanically in rotation by at least one drive motor 31 independently of the assigned printing units 13. The drive motors 31 are preferably controlled as regards their angular position electric motors 31, e.g. B. as asynchronous motors, synchronous motors or DC motors. In an advantageous development, between the drive motor 31 and the cylinder 16 to be driven; 17; 18 or pair of cylinders 16, 17 at least one gear 32, in particular at least one reduction gear 32 (such as pinion, attachment and / or planetary gear). The individual drives of the printing units 13 contribute to the high flexibility and to avoid vibrations in the mechanical drive system, and thereby also to the high quality in the product.

In the following FIGS. 6 to 8, only the components of the right half of the image have corresponding reference numerals, since the left side corresponds to the right side in mirror image. There are alternative configurations for any existing inking or dampening units 14; 20 indicated, which are to be transferred alternately to each other.

In Fig. 6, all nine cylinders 16; 17; 18 each have their own drive motor 31, each of which, for. B. via a gear 32 on the cylinder 16; 17; 18 drives. The inking unit 14 shown above has, in addition to other rollers, not designated, two distribution cylinders 33, which can be driven in rotation together by means of a separate drive motor 34. The two distribution cylinders 33 are for generating an axial stroke axially movable and driven by a drive means, not shown. The inking unit 14 shown below has only one distribution cylinder 33. The dampening unit 20 shown above has, in addition to further rollers (not designated), two distribution cylinders 36 which can be driven in rotation together by means of a separate drive motor 37. The two distribution cylinders 36 can be axially moved and driven by a drive means, not shown, for generating an axial stroke. The dampening unit 20 shown below has only one distribution cylinder 36, which can be driven in rotation via a drive motor 37.

In a variant, not shown, the dyeing and / or dampening unit 14; 20 not by its own drive motor 34; 37, but from one of the cylinders 16; 17; 18, in particular from the forme cylinder 16, via a mechanical coupling, e.g. B. via gears and / or belts, rotationally driven. The cylinders 16; 17 of the diametrically opposite printing units 13 are located with their axes of rotation R16; R17 together with the axis of rotation R18 of the satellite cylinder 18 in the print-on position in a common plane G.

In contrast to Fig. 6, the two cylinders 16; 17 of all four printing units 13 in the embodiment according to FIG. 7 each driven in pairs by a common drive motor 31 on the transfer cylinder 17. The drive can be axial, e.g. B. via a gear 32, or alternatively via a pinion driving on a drive wheel of the transfer cylinder 17. The drive wheel of the transfer cylinder 17 can then be driven to a drive wheel of the forme cylinder 16. The drive connection 38 (shown as a connecting line) can be made as a gear connection or via a belt and is embodied encapsulated in a further development. For the drive of the dyeing and, if necessary, dampening unit 14; 20 via own drive motors 34; 37 or a cylinder 16; 17; 18 is basically the same as for FIG. 5. Thus, the drive motors 34; 37 may be provided, or advantageously driven off from the forme cylinder 16 (shown in broken lines). The cylinders 16; 17 the diametrical opposite printing units 13 are located with their axes of rotation R16; R17 together with the axis of rotation R18 of the satellite cylinder 18 in the pressure-on position in a common plane G. The cylinders 16; 17 of the diametrically opposite printing units 13 are located with their axes of rotation R16; R17 together with the axis of rotation R18 of the satellite cylinder 18 in the print-on position in a common plane G.

In contrast to Fig. 7, the two cylinders 16; 17 of each printing unit 13 in the embodiment according to FIG. 8 is in each case driven by a common drive motor 31, but on the forme cylinder 16. The drive can again axially, for. B. via a gear 32, or via a drive on a drive wheel of the forme cylinder 16 pinion. The drive wheel of the forme cylinder 16 can then be driven to a drive wheel of the transfer cylinder 17. The drive connection 38 can be designed as set out in FIG. 9. For the drive of the dyeing and, if necessary, dampening unit 14; 20 via own drive motors 34; 37 or a cylinder 16; 17; 18 is again to be applied in principle to that shown in FIG. 6. The cylinders 16; 17 of the diametrically opposite printing units 13 are located with their axes of rotation R16; R17 together with the axis of rotation R18 of the satellite cylinder 18 in the print-on position in a common plane G.

In contrast to the embodiment indicated by dotted lines in FIG. 8 without its own rotary drive for the dyeing and / or dampening unit 14; 20, however, in a further development it is advantageous to transfer from the transfer cylinder 17 to the dyeing and / or dampening unit 14; 20 to drive. A clear torque flow can thus be achieved and any tooth flank changes that otherwise occur can be avoided.

An advantageous further development of the printing unit 02 is that the dyeing and dampening units 14; 20 are arranged mirror-symmetrically to the vertical. Thus, in a printing unit 13 there is a forward and symmetrical to the vertical Printing unit 13 a rewetting instead. However, the entire structure can be manufactured and operated in a simple manner. The dyeing and dampening units 14 are preferably; 20 also arranged mirror-symmetrically to the horizontal, so that a highly symmetrical arrangement is created.

The described configurations of the printing unit 02 or the printing units 13 or their cylinders 16; 17; 18 with respect to their openings 28; 29, their position relative to each other, the drive and / or the arrangement of the folding and dampening units 14; 20 enables low-vibration, precisely fitting, high-quality printing with a simple and optimized construction. This applies in the same way to double-wide printing units 02, ie for printing four newspaper pages arranged side by side.

Printing tower printing unit, satellite printing unit, nine-cylinder satellite printing unit, ten-cylinder satellite printing unit, H-printing unit web, partial web superstructure

Rip cutting device, turning device, register device harp

Folding structure folding unit printing unit, offset printing unit inking unit inking unit cylinder, forme cylinder cylinder, transfer cylinder printing cylinder, impression cylinder, satellite cylinder elevator, printing form, printing plate dampening unit, spray dampening unit elevator, rubber blanket, metal printing blanket layer carrier plate end, leading, hanging leg

End, trailing, hanging leg channel, slot butt, break, opening 29 Push, break, opening

30 channel, slot

31 drive motor, electric motor

32 gears, reduction gears

33 distribution cylinder

34 drive motor

35 -

36 distribution cylinders

37 drive motor

38 drive connection

L16 length

L17 length

A section

B section

C section

D section

E section

F section

G level

R16 axis of rotation

R17 axis of rotation

R18 axis of rotation

MS material thickness

I length α angle ß angle

Claims

Expectations

1. Printing unit with at least two pairs of two cylinders (16; 17), namely a transfer cylinder (17) and an associated forme cylinder (16), which have a circumference that corresponds to at least two standing printing pages arranged one behind the other in the circumferential direction, and wherein the Transfer cylinders (17) interact in a pressure-on position with a common pressure cylinder (18) to form a pressure point, characterized in that the cylinders (16; 17) of two diametrically opposed pairs are each arranged in such a way that their axes of rotation (R16 ; R17) lie together with the axis of rotation (R18) of the printing cylinder (18) in the printing position in a common plane (G).

2. Printing unit according to claim 1, characterized in that the transfer and forme cylinders (16; 17) are designed with a width for printing six printing pages arranged axially next to one another.

3. Printing unit according to claim 1, characterized in that the transfer and form cylinders (16; 17) are designed with a width for printing four printing pages arranged axially next to one another.

4. Printing unit according to claim 1, characterized in that on the transfer cylinder (17) in the longitudinal direction side by side elevators (21) are arranged offset in the circumferential direction to each other.

5. Printing unit according to claim 4, characterized in that on the forme cylinder (16) in the longitudinal direction side by side lifts (19) are arranged offset to one another in the circumferential direction.

6. Printing unit, which has at least two pairs of two cylinders (16; 17), namely a transfer cylinder (17) and an associated forme cylinder (16), which are designed with a width for printing six printing pages arranged axially next to each other and have a circumference which corresponds to at least two standing printed pages arranged one behind the other in the circumferential direction, characterized in that both on the transfer cylinder (17) and on the forme cylinder (16) in the longitudinal direction at least two elevators (19; 21) arranged next to one another in the circumferential direction to one another are staggered.

7. Printing unit according to claim 4, 5 or 6, characterized in that the outer surface of the cylinder (16; 17) caused by ends of the elevators (19; 21) and axially extending disturbances.

8. Printing unit according to claim 7, characterized in that ends of the elevators (19; 21) are held in axially extending openings (28; 29) in the region of the lateral surface of the cylinders (16; 17).

9. Printing unit according to claim 7, characterized in that the disturbances on the two cylinders (16; 17) are arranged with respect to one another and are dimensioned in length in such a way that in each stage when the two cylinders (16; 17) roll in the nip point at least on a section of the length occupied by lifts (19; 21) of at least one of the two cylinders (16; 17) has an undisturbed outer surface.

10. Printing unit according to claim 7, characterized in that the disturbances on the two cylinders (16; 17) are arranged with respect to one another and are dimensioned in length in such a way that in each stage when the two cylinders (16; 17) roll in the nip point at least on a section of those with lifts (19; 21) Interact undisturbed lateral surfaces of the two cylinders (16; 17).

11. Printing unit according to claim 4, 6, 9 or 10, characterized in that the transfer cylinder (17) has three elevators (21) or three faults in the axial direction, which are arranged alternately offset from one another in the circumferential direction.

12. Printing unit according to claim 5 or 6, characterized in that the forme cylinder (16) is designed to accommodate six elevators (19) next to one another in the axial direction and two in the circumferential direction one behind the other.

13. Printing unit according to claim 12, characterized in that the middle of the six lifts (19) arranged next to one another are arranged offset in the circumferential direction by 90 ° to the other lifts (19).

14. Printing unit according to claim 13, characterized in that three openings (28) suitable for accommodating two elevators (19) wide on one printing side or an elevator (19) wide on two printing sides are offset in the axial direction next to one another and in the circumferential direction.

15. Printing unit according to claim 13, characterized in that the openings (28) have a length which corresponds essentially to the width of two printed pages.

16. Printing unit according to claim 6 or 9, characterized in that two extending openings (28) with a length of at least six printing page widths are arranged one behind the other in the circumferential direction offset by 180 °.

17. A printing unit according to claim 6 or 9, characterized in that the forme cylinder (16) has six elevators (19) aligned one beside the other in the axial direction and two elevators one behind the other in the circumferential direction.

18. Printing unit according to claim 4, 5 or 6, characterized in that the offset is less than an integer multiple of an elevator length.

19. Printing unit according to claim 1, 2, 3 or 6, characterized in that the printed pages correspond to newspaper pages, in particular newspaper pages in broadsheet format.

20. Printing unit according to claim 1 or 6, characterized in that it has four printing units (13), each with a pair of cylinders (16, 17), which cooperate with the printing cylinder (18).

21. Printing unit according to claim 20, characterized in that the cylinders (16; 17) of the diametrically opposite two pairs are each arranged such that their axes of rotation (R16; R17) together with the axis of rotation (R18) of the printing cylinder (18) are in the pressure-on position in a common plane (G).

22. Printing unit according to claim 20, characterized in that inking and dampening units (14; 20) of two horizontally adjacent printing units (13) are arranged mirror-symmetrically to the vertical of the printing unit (02).

23. Printing unit with at least two pairs of two cylinders (16; 17), namely a transfer cylinder (17) and an associated forme cylinder (16), which have a circumference that corresponds to at least two standing printing pages arranged one behind the other in the circumferential direction, and wherein the Transfer cylinders in a pressure-on position interact with a common pressure cylinder (18) to form a pressure point, characterized in that the cylinders (16; 17) of two diametrically opposed pairs are each arranged in such a way that their axes of rotation (R16; R17) together with the axis of rotation (R18) of the printing cylinder (18) in the printing position in a common plane (G), and that both on the transfer cylinder (17) and on the forme cylinder (16) in the longitudinal direction at least two arranged side by side Elevators (19; 21) are arranged offset to one another in the circumferential direction in such a way that in each stage when the two cylinders (16; 17) roll in the nip point at least on a portion of the length occupied by elevators (19; 21) at least one of the two cylinders (16; 17) has an undisturbed outer surface.

24. Printing unit with four printing units (13) assigned to a common printing cylinder (18), wherein a forme cylinder (16) is assigned to each printing unit (13), an inking unit and a dampening unit (14; 20), characterized in that inking and dampening units ( 14; 20) of two horizontally adjacent printing units (13) with respect to the position relative to the associated forme cylinder (16) are arranged mirror-symmetrically to the vertical of the printing unit (02).

25. Printing unit according to claim 23, characterized in that the cylinders (16; 17) of the diametrically opposite two pairs are each arranged such that their axes of rotation (R16; R17) together with the axis of rotation (R18) of the printing cylinder (18) are in the pressure-on position in a common plane (G).

26. Printing unit according to claim 1, 6, 23 or 24, characterized in that the printing cylinder (18) has its own drive motor (31) which is mechanically independent of the pairs (16, 17).

27. Printing unit according to claim 1, 6, 23 or 24, characterized in that each pair (16, 17) has a drive motor (31) which is mechanically independent of other pairs and of the printing cylinder (18).

28. Printing unit according to claim 1, 6, 23 or 24, characterized in that each cylinder (16; 17) of the pairs (16, 17) and the printing cylinder (18) each have their own, of other cylinders (16; 17; 18 ) Has mechanically independent drive motor (31).