EP0638419A1 - Supporting framework for a rotary web printing press - Google Patents

Abstract

A supporting framework (2) for a rotary web printing press, which supporting framework serves to hold at least one printing unit (5) formed by a cylinder element (6) having a plurality of cylinders and inking and damping units (11; 15) assigned to the cylinder element, is a sturdy support in a self-supporting manner or in rigid connection to the cylinder element. <IMAGE>

Description

The present invention relates to a support frame for a web-fed rotary machine for receiving at least one printing unit.

In known printing press configurations, the printing units of a printing tower are stacked one on top of the other, or even the elements of the printing units, namely the cylinder elements and the inking and dampening units, are placed individually next to and on top of one another. An example of the first of these two configurations is known from DE 42 19 705 A1. In both cases, the units placed one on top of the other must be designed to be self-supporting and the units placed on them must also be supported. They are therefore to be provided in a correspondingly stable design. The structural effort of such a supporting structure is increased by the fact that the cylinder, color and dampening unit elements themselves have a supporting function and are accordingly dimensioned to be larger than their actual task would require.

The present invention has set itself the task of creating a support frame as a support structure for a web-fed rotary printing press in such a way that the individual printing press elements can be modularly constructed therein with the least possible effort for the required stability and optimal accessibility for the operation and maintenance of the printing press elements. The invention is intended to make the printing press cheaper and less expensive to operate.

This object is solved by the subject matter of claim 1.

The subclaims are directed to advantageous, not smoothly self-evident embodiments of the subject matter of claim 1.

In a printing unit or a printing tower of a web-fed rotary printing press with at least two printing units arranged one above the other, each having cylinder elements with a plurality of cylinders and inking and dampening units assigned to these cylinder elements, according to the invention the cylinder elements and the inking and dampening units are held in a supporting structure, which as a support frame is already stable in itself or at least in a rigid connection with the cylinder elements.

This avoids stacking the printing units or even the individual cylinder elements and the inking and dampening units. These units no longer need to be inherently stable. In particular, the cylinder elements and inking and dampening units themselves do not have to take on any supporting functions in the structure of the printing press and can therefore be built more easily and more cost-effectively than with a conventional design. While in the conventional design the load-bearing parts are manufactured to fit must be so that the cylinders and rollers are integrated into the supporting structure and can take on a supporting function, no precise machining is required in the supporting structure according to the invention. Structural parts can therefore be made of reinforced concrete or similar inexpensive building materials in a particularly cost-effective manner. The effort to be made in the production of a suitable hall floor is reduced when using the supporting structure according to the invention. Furthermore, the supporting structure can be set up at the destination regardless of the complex machine parts. After they have been installed, the cylinder elements, inking and dampening units, the folder and other machine parts can be easily and quickly installed in the existing supporting structure. The support structure according to the invention, in particular the inherently stable support structure, makes it possible to build the printing press largely modularly from comparatively easily replaceable units. The modular units no longer build on one another in a load-bearing manner, but they can be supported on the supporting structure, for example by a fixed, adjustable connection, by hanging in, or they can be movably held thereon. Finally, the invention allows the printing press to be equipped with working platforms for the operating and maintenance personnel with the least possible additional effort. The working platforms used in the operation of the printing press can also be integrated into the supporting structure when the machine is being set up, in particular when installing the machine parts in the supporting structure, or can only be added to it.

The support structure according to the invention enables the accessibility of machine parts to be improved in a particularly simple manner, in that the inking units or parts thereof are designed as modular units which are held on the support structure and / or cylinder elements so as to be movable from their working position relative to the respective cylinder elements. Although the combination of a supporting structure according to the invention with the mentioned movability of inking units, dampening units and possibly other machine parts offers particular advantages, the movability alone brings advantages in terms of space requirements and for the maintenance of the machine.

The movability of inking units par excellence is known from DE-AS 1 169 959. There, a multi-color sheet-fed rotary printing press designed as a series machine is disclosed. Their printing unit is formed by two form cylinders or plate cylinders which are assigned to a printing cylinder and are arranged approximately one above the other, and inking units which are in turn assigned to them. The two inking units can be moved in a common frame on inclined tracks in the transverse direction to the longitudinal axes of the forme or plate cylinders.

A unit of printing cylinders which can be moved in the transverse direction to the cylinder longitudinal axes is known from EP 0 315 917 A2.

According to the invention, on the other hand, the inking unit parts combined to form movable units are arranged on the support structure so as to be movable in the direction of the longitudinal axes of the cylinders.

Since the movable units are moved in the direction of the axes of rotation of the cylinders, a reduction in the length of the printing machine measured transversely to the axes of rotation of the rollers can be achieved compared to the known displacement or pivoting mechanisms. This advantage is particularly evident in the large rotary printing presses which are designed as in-line presses and which can have 8, 16 or more printing towers arranged one behind the other. Compared to the conventional printing towers, which have no movable units, the cylinder elements and inking units can be arranged closer together, since the maintenance tunnels otherwise necessary for access to the cylinder elements and inking units can be dispensed with. In the working position of the cylinders and the inking unit rollers, it is therefore no longer necessary to pay attention to the accessibility, so that the inking units are each in themselves and also in relation to the other inking units and opposite the cylinder elements can be built and arranged to save space. In the extended position, the inking and dampening units as well as the printing cylinder elements are optimally accessible. Furthermore, in the event of major maintenance or repairs, machine elements can be replaced almost without interrupting production. The versatility of such printing units can also be increased by using different inking units alternatively for different demands on the quality of the printed products and by moving them into their respective working positions. In the same printing press, different inking units, for example short inking units with different inking processes for different printing qualities or printing units with different printing methods such as flexographic or gravure printing processes, can be used without any problems or can be interchanged and, if necessary, combined with one another.

Conventional blanket cylinders can also be exchanged for new blanket cylinders with continuous blankets for the use of a computer to press system.

A dampening unit which interacts with the inking unit, such as the inking unit in part or in whole, is particularly advantageously integrated in the movable units. Thus, not only is the extended inking unit or dampening unit easily accessible for maintenance work, but also the correspondingly exposed part of the cylinder element consisting of one or more forme or plate cylinders, blanket cylinder and possibly a central cylinder can be made easily accessible for maintenance work. An entire inking unit with an entire dampening unit is particularly preferably combined to form such a movable unit. Both the cylinder elements and the inking and dampening units are freely accessible after they are extended. The changeover times when changing ink and dampening unit types are the shortest and the design effort is the least due to the low fragmentation. In this combination of inking and dampening systems, the largely achieved reductions in the overall height and the total length of the printing press.

There is advantageously no mechanical connection between the cylinder elements and the displaceable units except for the holder on the supporting structure. The movable units are each equipped with a separate drive. In principle, however, it would also be possible to couple the movable units into a drive system for the entire printing unit, although an additional auxiliary unit would still be necessary to drive the rollers of the movable unit in the extended state. In addition to its own drive, the movable unit also has a control unit necessary for carrying out maintenance work.

The supply of the mobile unit, i.e. the drive and the control device can be supplied via a trailing cable or via a plug-in connection that has only been established in the extended state.

Figur 1

die Vorderansicht einer Rollenrotationsdruckmaschine;

Figur 2

eine Seitenansicht eines Druckturms der Rollenrotationsdruckmaschine von Figur 1 mit zwei übereinander angeordneten Druckeinheiten;

Figur 3

eine Druckeinheit des in Figur 1 dargestellten Druckturms;

Figur 4

einen Druckturm nach Figur 1 im Vergleich zu einem herkömmlichen Druckturm;

Figur 5

eine Draufsicht auf einen Druckturm nach Figur 1;

Figur 6

in Wartungsposition ausgefahrene Farb- und Feuchtwerke in Vorderansicht;

Figur 7

Ausricht- und Verbindungselemente zwischen einem Zylinderelement und der Tragkonstruktion; und

Figur 8

eine Vorderansicht des Aufbaus einer weiteren Ausführungsform einer Tragkonstruktion.

A preferred embodiment of the invention is explained below with reference to drawings, further features of the invention being disclosed. Show it

Figure 1

the front view of a web-fed rotary printing press;

Figure 2

a side view of a printing tower of the web-fed rotary printing press from FIG. 1 with two printing units arranged one above the other;

Figure 3

a printing unit of the printing tower shown in Figure 1;

Figure 4

a pressure tower according to Figure 1 in comparison to a conventional pressure tower;

Figure 5

a plan view of a printing tower according to Figure 1;

Figure 6

Front view of inking and dampening units extended in maintenance position;

Figure 7

Alignment and connecting elements between a cylinder element and the supporting structure; and

Figure 8

a front view of the structure of a further embodiment of a support structure.

In FIGS. 1 and 2, printing towers 1, each with two printing units 5 arranged one above the other, of which FIG. 3 shows a further enlarged one, are shown in a lateral cross section and in a front view. A web-fed rotary printing press is formed by at least one printing unit 5 or a plurality of printing towers 1 arranged one behind the other, at least one folder 3 and at least one printing material roll stand 4.

In the exemplary embodiment according to FIGS. 1 to 3, the printing units 5 are each constructed in a modular manner from a cylinder element 6 and four assigned, movable units 10. The cylinder element 6 is designed in the form of a satellite printing unit with a central cylinder 7, four blanket cylinders 8 and four form or plate cylinders 9 assigned to the blanket cylinders 8. The cylinder element 6 is rigidly attached to four stationary columns 30, which form lateral column pairs 30 for the printing units 5, while the units 10 can be moved in the rails 19 attached to the columns 30 in the direction of the axes of rotation 21 of the cylinders 7, 8, 9. The movable units 10 are each formed by an inking unit 11 and a dampening unit 15. The ink application rollers 12 and the dampening agent application rollers 16 can be pivoted away from the forme cylinders 9.

The printing units 5 are each supported on the pairs of columns 30 arranged on their two sides, which together with connecting cross members 50, 150, 151, 152 form the essential part of a supporting structure 2. The printing units 5 are in this way framed by the lateral column pairs 30 and in each case an upper and a lower cross member 50. Each of the movable units 10 can be individually shifted in a straight line in the direction of the axes of rotation 21 of the cylinders 7, 8 and 9 between a working and a maintenance position. For this purpose, the units 10 run with rollers 20 in the running rails 19. In principle, however, other travel mechanisms are also conceivable. The two units 10 each arranged above a cylinder element 6 become hanging, and the units 10 each arranged below the cylinder element 6 are supported on the cross members 50 by the columns 30.

The cylinder elements 6 arranged one above the other are supported on a pair of columns 30 on the right and on the left thereof, for example by corresponding alignment and connecting elements. The support structure 2 of the exemplary embodiment is sufficiently inherently rigid to carry both the cylinder elements and the inking and dampening units. In principle, the cylinder elements 6 can also be exchanged in a modular manner. However, the cylinder elements 6 can also be integrated into the supporting structure 2 in a stabilizing and load-bearing manner with a sufficiently stable design and a correspondingly firm bond with the columns 30. Corresponding compromises could be made in this case in the load-bearing capacity of the columns 30 and the cross beams 50, 150, 151, 152.

Figure 4, in which equivalent components are provided with the same reference numerals, shows two printing units 5 on the left in a conventionally constructed printing tower 1 and, on the right, in comparison, the printing units of the printing tower 1 of Figure 1, which, in addition to the inherently rigid support structure, also has the further feature of the movable color - And dampening unit 10, so that the maximum space saving is achieved. The space requirement for a maintenance tunnel 60 which is necessary in the conventional printing tower 1 and which must remain free in the case of non-movable inking and dampening units 11, 15 in order to be able to carry out maintenance and repair work can be clearly seen. As a result of the color and dampening unit 10 can be completely omitted in the pressure tower 1 maintenance tunnel shown in FIG. 4, since not only are the extended inking and dampening units freely accessible, but also the cylinder elements 6 can be completely exposed as required by the method of an inking and dampening unit 10. As a result, the printing units 5 can be made flatter and narrower. The reduction in the pressure tower height in the exemplary embodiment is approximately 15% compared to the corresponding conventional pressure tower 1 on the left half of FIG. 4.

The number of operating levels and the intermediate platforms are also significantly reduced in the supporting structure according to the invention.

The support structure 2, as can be seen in FIG. 2, is further developed by further columns 32, which are each arranged next to a pair of columns 30 in the longitudinal direction of the cylinders 7, 8, 9. The arrangement of the columns 32 is approximately mirror-symmetrical to that of the columns 30 to which they are connected by means of elongated cross members. The two left-hand columns 32, which only need to partially support the dead weight of the supporting structure 2, the units 10 moved out of the working position, the maintenance personnel and the equipment necessary for maintenance and repair, can be made weaker than the columns 30. In the exemplary embodiment, the columns carry 32 another work crane 23 to support the work.

In the lower left part of FIG. 2, a unit 10 which is in the disengaged state, ie in the maintenance position, is indicated in dashed lines. In this position, the parts of the inking and dampening unit 11 and 15 combined to form unit 10 are supplied with energy and possibly with data for a separate drive and possibly a control unit for the rollers of the movable unit 10 via a fixed plug connection 21. Because of the lighter weight of the inking and dampening units or cylinder unit combined to form the movable unit 10, the lifting crane 23 can be used for a lower lifting load than is more conventional for the printing units Printing presses would be necessary, which in turn entails cost advantages.

FIG. 5 shows the pressure tower 1 from FIG. 1 in a top view, in which the column pairs 30 can be seen laterally from the two units 10 arranged next to one another and movable in the direction of the arrows A. Furthermore, a working platform 35 which is movable in the direction of arrow B transversely to the extension direction of the units 10 is indicated. Such work platforms 35 are again shown more clearly in FIG. 6 together with several units 10 moved out into the maintenance position. The work platforms 35 can each be guided under and / or over the extended units 10 of the printing units 5 along further various cross members. It is also possible to move the work platforms freely if other floors are provided on the various supports.

As the described exemplary embodiment makes clear, the advantages of the invention come into play particularly when the printing press is arranged in a row by a plurality of printing units 5 or printing towers 1, each with a plurality of printing units 5 arranged one above the other, each with a plurality of inking and / or dampening units 11 and 15 is formed. In this case, the greatest cost savings and the largest space savings in terms of press length and height are expected. With the movability of the inking and dampening units according to the invention, moreover, no space is required, which would not also occur with permanently installed inking and dampening units, since their rollers and / or cylinders would also have to be pulled out of the printing machine when changing in the direction of their axes of rotation. In contrast, the known printing presses with otherwise movable inking and dampening units always require additional space, which would not arise with a fixed arrangement. The concept of working platforms that can be moved under the extended fab and dampening units also contributes to saving space without requiring concessions on accessibility. In the exemplary embodiment with four inking and dampening units Each inking unit and dampening unit in its maintenance position is freely accessible from three sides per printing unit. The support structure according to the invention enables this high degree of modularity, including the movability of the inking and dampening unit, which benefits the simple installation of the printing press and the need to change machine parts later on.

FIG. 6 shows a front view of the printing tower of FIG. 5, in which a unit 10 of a lower and an upper printing unit is extended in the maintenance position in the direction of the axis of rotation 21 of the cylinders 7, 8, 9. It can also be seen that a work platform 35 for a lower and an upper printing unit 5 can be moved in the direction of arrow B transversely to the extension direction of the units 10. In doing so, the units 10 with the work platforms are driven under or over. It can also be seen that no additional intermediate platforms corresponding to the conventional design according to FIG. 4 are necessary for operating the units 10.

FIG. 7 shows a detail from the front view of FIG. 3, in which a cylinder element 6 is detachably attached to the columns 30 by means of spherical alignment and connecting elements 17. The cylinder elements 6 are aligned in the vertical direction between the columns 30 and in the horizontal direction between the various cross members (50, 150, 151, 152) by means of the alignment and connecting elements 17, 18.

The units 10 are aligned by aligning the running rails 19, as shown in FIG. 3, which are fastened with the same alignment and connecting elements 17, 18, not shown, as the cylinder elements 6.

Figure 8 shows a further embodiment of the support structure according to the invention. A web-fed rotary printing press shown in a front view consists of at least one printing unit 5, a folder 3 and a printing-material roll stand 4 Folder also divided into different cylinder elements, not shown, which are designed so that they can be aligned with the cylinder elements 6 and detachably attached to the columns 30. The substrate roll stands 4 are attached to the columns 30 in the same way. When using the support frame according to the invention, which is supported on the machine foundation, the costly customary machine table substructure can be dispensed with as a substantial cost saving. The folder and roll stand elements can also be moved in the direction of the axis of rotation 21 between a work and maintenance position.

Claims (14)

1. Support frame for a web-fed rotary printing press for receiving at least one printing unit (5), which is formed by a cylinder element (6) with a plurality of cylinders (7, 8, 9) and the cylinder element (6) associated with inking and dampening units (11, 15) ,
characterized in that
the cylinder element (6) and the inking and dampening units (11, 15) are held in the support frame (2), which is stable in itself or in a rigid connection with the cylinder element (6). 2. Support frame according to claim 1, characterized in that in the support frame (2) at least parts of the inking and / or dampening unit (11, 15) and / or the entire cylinder element (6) in the direction of the axes of rotation (21) of the cylinder ( 7, 8, 9) can be moved as modular units (10; 6). 2. Support frame according to claim 1, characterized in that at least parts of the dampening unit (15) cooperating with the inking unit (11) are combined with the movable parts of the inking unit (11) to form the unit (10). 3. Support frame according to claim 2, characterized in that in each case whole inking and dampening units (11, 15) form a movable unit (10). 4. Support frame according to one of the preceding claims, characterized in that on the support frame (2) and / or the cylinder element (6) rails (19) are provided, on which the unit (10) is held suspended or supported movable. 5. Support frame according to one of the preceding claims, characterized in that the movable unit (10) has its own drive and / or its own control device. 6. Support frame according to one of the preceding claims, characterized in that the unit (10) has its own travel drive and / or its own control device. 7. Support frame according to one of the preceding claims, characterized in that the movable unit (10) can be supplied via a trailing cable or via a plug connection (21). 8. Support frame according to one of the preceding claims, characterized in that the printing unit (5) is supported on supporting columns (30). 9. Support frame according to claim 8, characterized in that the columns (30) are machined with a precise fit only in the holding areas for the cylinder elements (6) and the inking and dampening units (11, 15). 10. Support frame according to one of the preceding claims, characterized characterized in that the support frame (2) is extended in the extension direction of the unit (10) for receiving the extended unit (10). 11. Support frame according to one of the preceding claims, characterized in that movable work platforms (35) are provided on the support frame (2). 12. Support frame according to claim 11, characterized in that the working platforms (35) are movable under and / or over extended units (10). 13. Support frame for a web-fed rotary printing press for receiving a printing tower, comprising at least one printing unit (5), which is provided by an inking and dampening unit (11) associated with a cylinder element (6) with a plurality of cylinders (7, 8, 9) and the cylinder element (6) , 15), a folder (3), which is formed by rotatably mounted cutting and folding cylinders, and a substrate roll stand (4), which is formed from at least one substrate roll bearing,
characterized in that
the elements (6, 11, 15) forming the printing unit (5), the essential parts forming the folder (3) and the essential parts forming the printing material roll stand (4) are held in the support frame (2), which in itself or in rigid connection with the elements (6, 11, 15) forming the printing unit (5) and / or the parts forming the folder (3) and / or the parts forming the printing material roll stand (4) is stable in a rigid connection.

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