EP1318915A2

EP1318915A2 - Printing unit

Info

Publication number: EP1318915A2
Application number: EP01982103A
Authority: EP
Inventors: Erich Max Karl Gerner; Manfred Herrmann Liebler; Ewald RÖTHLEIN; Kurt Johannes Weschenfelder
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 2000-09-20
Filing date: 2001-09-17
Publication date: 2003-06-18
Anticipated expiration: 2021-09-17
Also published as: AU2002213794A1; ATE328735T1; WO2002024452A2; EP1598187A2; US6817292B2; DE50110064D1; EP1598187A3; US20040050270A1; WO2002024452A3; WO2002024452B1; DE50114534D1; ATE415277T1; DE10046368C2; DE10046368A1; EP1598187B1; EP1318915B1

Abstract

The unit has a pair of cylinders formed by a forme cylinder (3) and a transfer cylinder (4) and a third cylinder (8, 9) that forms a printing position with the transfer cylinder. The drives for the forme and transfer cylinders form a permanently coupled combined drive (23) that is driven by a common motor (6) on the transfer cylinder during printing. The drive for the third cylinder can be engaged selectively via a first coupling (12) and can be mechanically coupled to the combined drive.

Description

description

printing unit

The invention relates to a printing unit according to the preamble of claims 1, 23 and 24.

A printing press is known from EP 06 44 048 B1, in each case a pair of cylinders consisting of forme and transfer cylinders is mechanically fixedly coupled and each pair has its own drive motor. The pairs cannot be coupled to one another.

DE 44 30 693 A1 discloses printing units of a printing press with different configurations of individually or group-driven cylinders. Cylinders or cylinder groups with a separate drive are not in drive connection with each other.

From DE 196 03 663 A1, a four-cylinder printing unit is known, the two interacting transfer cylinders being firmly coupled to one another and optionally being drivable via the drive of one or both of the associated forme cylinders. In one embodiment, a further pair of cylinders comprising the forme and transfer cylinders can be driven on this four-cylinder printing unit and can be coupled into the drive system of the first two transfer cylinders for the purpose of synchronization or register-correct printing.

EP 09 97 273 A2 discloses a four-cylinder printing unit, the four cylinders being drivable by two drive motors. Two clutches on the pins of the two forme cylinders and two gear wheels axially displaceable on the pins of the two transfer cylinders enable the formation of different drive assemblies. The invention has for its object to provide a printing unit.

The object is achieved by the features of claims 1, 23 and 24.

The advantages that can be achieved with the invention are, in particular, that a great variety of operations and variability of a printing unit or a cylinder assembly with a high level of operational reliability are created by redundancy, without each cylinder being provided with its own drive. The invention combines the advantages of the high flexibility from the expensive and complex individual drive technology and the advantages of driving coupled cylinder groups, namely the saving of motors and the mechanical synchronization of the connected cylinders.

Due to the optimized arrangement of switchable clutches and motors, usually just as many of the desired modes of operation as possible with the execution of all cylinders with individual drives. When the clutch is open, cylinders or cylinder groups can be moved independently of one another, which is necessary, for example, when changing the printing form or blanket, when drawing in a paper web, when inking or washing rollers and cylinders independently. In many cases, an auxiliary drive can be saved since this can be done by the main drives if the clutches are switched accordingly. It is also possible to reverse individual cylinders or cylinder groups of larger cylinder groups by forming new drive groups by opening clutches and closing other clutches.

A further major advantage lies in the possibility of standardizing individual small groups, for example a pair of cylinders consisting of a forme cylinder and a transfer cylinder with a corresponding coupling, and in any way depending on Combine delivery request for larger units. A standard group can also represent an above-mentioned pair together with an impression cylinder. The pins of the cylinders are z. B. optionally with or without clutch, with non-rotatable or lockable gear, suitable for a first or second drive level.

In an advantageous embodiment, the transfer cylinder of the pair is driven. This allows the flow of moments down to an inking unit to be clearly defined, which helps to improve the print quality.

Particularly in connection with pressure units that can be switched from rubber-to-rubber to rubber-to-steel operation, i. H. at least one of the transfer cylinders can optionally be adjusted to an impression cylinder or a second transfer cylinder, depending on the printing unit, a reversal of the direction of rotation of one or more cylinders, i. H. the release of drive groups and the formation of new drive groups required. In the case of a five-cylinder printing unit, the design with one drive motor per form / transfer cylinder pair is advantageous, the impression cylinder being able to be coupled to one of the two or to both drive motors or pairs, depending on the paper guide and mode of operation.

In such advantageous embodiments, a flying plate change is possible with only two drive motors and only two clutches for a five-cylinder printing unit, without the need for appropriate devices for re-acceleration, auxiliary drives or for circumferential register adjustment and / or for locating the register before recoupling.

In a version with only one drive motor and only two clutches, a one-sided printing form change, e.g. B. possible to prepare an impression.

For a six-cylinder y- or λ-printing unit, flexible use z. B. for the 2 / 1- Continued printing, the flying one-sided plate change or in imprint function during 1/1 printing, a version as a four-cylinder printing unit expanded by another cylinder pair is advantageous, for example. This version only requires a total of two drive motors and two switchable clutches.

The invention can also be used particularly advantageously and rationally in seven-cylinder, nine-cylinder or ten-cylinder printing units if maximum flexibility is required with a minimum number of engines.

In the case of several cylinder pairs acting directly or via an impression cylinder from the forme and transfer cylinders, there is the possibility of uncoupling the relative rotational position of the forme cylinder, e.g. B. to change the range or color register.

Also advantageous in the case of several drives that can be coupled via couplings is, for. T. the high level of operational reliability due to the redundancy in the number of usable drive motors, the so-called back-up function.

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

Show it:

Figure 1 is a schematic representation of a first embodiment for a printing unit with three cylinders.

2 shows a schematic illustration of a second exemplary embodiment for a printing unit with three cylinders; 3 shows a schematic illustration of a third exemplary embodiment for a printing unit with three cylinders;

4 shows a schematic illustration of a fourth exemplary embodiment for a printing unit with three cylinders;

Fig. 5 is a schematic representation of a fifth embodiment for a printing unit with four cylinders;

6 shows a schematic illustration of a sixth exemplary embodiment for a printing unit with four cylinders;

7 shows a schematic illustration of a seventh exemplary embodiment for a printing unit with five cylinders;

8 shows a schematic illustration of an eighth exemplary embodiment for a printing unit with five cylinders;

Fig. 9 is a schematic representation of a ninth embodiment for a printing unit with five cylinders.

A printing unit 01 of a printing press, in particular one

Web-fed rotary printing press, has a first pair 02 of interacting cylinders 03; 04, e.g. B. a first forme cylinder 03 and a cooperating with this first transfer cylinder 04. The pair 02 can also be mechanically or permanently coupled with a dyeing and / or dampening unit for all exemplary embodiments. The drive of the pair 02 is mechanically coupled and is driven by a common drive motor 06 during production. The drive motor 06 drives the transfer cylinder 04, which via a mechanical coupling, for example on the form cylinder 03 via a positive coupling by means of gear wheels.

An advantage with regard to the drive of the transfer cylinder 04 is that there is a clear torque flow from the drive motor 06 to the transfer cylinder 04, the forme cylinder 03 and an optional drive connection to an inking unit.

The transfer cylinder 04 of the pair 02 forms with a third cylinder 08 or 09, e.g. B. a satellite cylinder 08, z. B. a steel cylinder 08, or a second transfer cylinder 09, a pressure point 11, at which the two cylinders 04 and 08 or 09 in a pressure-on position via a path running between the cylinders 04 and 08 or 09, z. B. a substrate or paper web, work together. This third cylinder 08 serves the transfer cylinder 04 in a pressure-on position as an abutment and vice versa. The drive of the first pair 02 and that of the third cylinder 08; 09 can be connected to one another by means of a switchable, mechanical coupling 12, for example by means of a switchable coupling 12.

In a first, three-cylinder group of exemplary embodiments (FIGS. 1, 2, 3 and 4), the third cylinder 08; 09 designed as a satellite cylinder 08. In the first case, the printing unit 01 represents, for example, a three-cylinder color deck or part of a larger printing unit with impression cylinder 08 designed as a satellite cylinder 08.

In a first exemplary embodiment (FIG. 1), the third cylinder 08 is designed without its own drive. The drive motor 06 of the first pair 02 drives the transfer cylinder 03, which drives on the forme cylinder 04.

The cylinders 03; 04; 08 and 09 each have associated pins 13; 14; 16 and 17 on which on both end faces in a frame wall 18, for example a housing wall 18 are mounted. On the pin 13 of the forme cylinder 03 and on the pin 14 of the transfer cylinder 04, gears 19 and 21 are arranged on the end face in a rotationally fixed manner. These are in engagement with one another in such a way that there is a firm mechanical coupling between the interacting forme 03 and transfer cylinder 04.

The gear 21 of the transfer cylinder 04 is directly or via a gear 22, for. B. a pinion 22 of the drive motor 06, drivable and forms a fixed drive assembly 23 for the pair 02 together with the gear 19. On the pin 14 of the transfer cylinder 04, a second gear 24 is rotatably mounted, which, however, can be rotated by means of the switchable clutch 12 is connectable on the pin 14. This gear wheel 24 engages in a form-fitting manner on the pin 16 or 17 of the third cylinder 08; 09 rotatably arranged gear 26 or 27. The drive motor 06 is preferably arranged stationary with respect to the frame wall 28, for example on a housing wall 28 or on its own frame. If the cylinder 04, z. B. on an eccentric bearing, pivotally mounted, the drive motor 06 can also be arranged in a fixed position relative to the transmission cylinder 04 to be driven, or the meshing pinions 22 and gear 21 are arranged with sufficient play. The third cylinder 08; 09 can be stopped by opening the clutch 12 independently of the first pair 02 or a further drive system, not shown, can be moved, while the pair 02, for example for the purpose of changing the printing form or blanket, pre-inking or washing independently of the third cylinder 08; 09 can be moved, braked or accelerated again. When clutch 12 is closed, third cylinder 08; 09 can be mechanically and synchronized with pair 02. Especially when the web is drawn in, it is possible to use one of the cylinders 03; 04 or to set up the inking unit without requiring the web.

In the second exemplary embodiment (FIG. 2), the arrangement from FIG. 1 additionally has a second drive motor 29 which is connected via a gear 31, e.g. B. a pinion 31 with optionally combing gear 24 of the transfer cylinder 04 which can be connected in a rotationally fixed manner to the pin 14. The third cylinder 08; 09 can additionally be rotated independently when the clutch 12 is open compared to the first exemplary embodiment. When the clutch 12 is closed, a common, redundant drive by both drive motors 06 and 29 is possible.

In contrast to FIGS. 1 and 2, the third exemplary embodiment (FIG. 3) has the switchable clutch 12 and the cooperating, rotatably mounted gearwheel 24 on the pin 16; 17 of the third cylinder 08; 09 on. The drive motor 06 drives, via the assigned pinion 22, the optionally lockable gear wheel 24, which meshes with the gear wheel 21 of the transfer cylinder 04, which in turn is in contact with the gear wheel 19 of the forme cylinder 03. When the clutch 13 is open, the drive motor 06 forms, together with the gears 24, 21 and 19, the fixed drive assembly 23. By closing the clutch 13, the satellite cylinder 08 can also be driven. As shown in dashed lines in Fig. 3, the pin 16; 17 have a further gear 33 arranged in a rotationally fixed manner, which meshes, for example, with a gear, not shown, of a further cylinder or drive system.

FIG. 4 shows a development of the embodiment shown in FIG. 3. The pin 16; 17 of the third cylinder 08; 09 has, in addition to the rotatably mounted gear 24, a second, rotatably mounted gear 34. This is optionally via a rotationally fixed on the pin 16; 17 arranged switchable coupling 36, z. B. a second coupling 36 with the pin 16; 17 non-rotatably connectable. As also shown in FIG. 4, the gearwheel 34, similar to the exemplary embodiment 2, can be driven by the second drive motor 29 via the pinion 31. The second, rotatably mounted gear 24 meshes, for example, with a gear 37 shown in dashed lines of another cylinder or drive assembly, not shown. Optionally, the two clutches 12; 36 all cylinders 03; 04; 08 or 09 by both drive motors 06; 29 together, or the pair 02 and the third cylinder 08; 09 (possibly together with another Drive group) are each independently driven.

In a second group of exemplary embodiments (FIGS. 5 and 6), the third cylinder 08; 09 designed as a second transfer cylinder 09, which in turn with a second cylinder 38, for. B. forme cylinder 38 acts together. 5 and 6 show two advantageous designs for connecting the drive from the second transfer cylinder 09 to the interacting second forme cylinder 38 of a four-cylinder printing unit 39.

In the fifth exemplary embodiment (FIG. 5), the second forme cylinder 38 has a pinion 42 on its pin 41 in a rotationally fixed manner, which meshes with the pinion 27 of the second transfer cylinder 09 and is in a fixed drive connection.

6, on the other hand, the pin 41 has a rotatably mounted gear 43 which is connected via a switchable coupling 44 arranged on the pin 41, e.g. B. a coupling 44, can optionally be rotatably coupled on the pin 41.

The variants shown in FIGS. 3 and 4 are also possible for the drive configuration of the first pair 02 together with the second transfer cylinder 09.

In a third group of exemplary embodiments (FIGS. 7 to 9) for a five-cylinder printing unit 46, e.g. B. as a semi-satellite, the third cylinder 08, which interacts with the first pair 02, is designed as in the first group as a satellite cylinder 08, which, however, as with a second pair 47 of cylinders 48; 49, e.g. B. a transfer cylinder 48 and a forme cylinder 49 acts together.

The arrangement shown in FIG. 7 is a mirror image of the satellite cylinder 08 for the two pairs 02; 47 from the arrangement according to embodiment 1 (Fig. 1). The Cylinder 48; 49 of the second pair 47 also have pins 51; 52, which are mounted in the frame wall 18. On the pin 52 of the forme cylinder 49, and on the pin 51 of the transfer cylinder 48, gears 54; 53 arranged in a rotationally fixed manner, which are in engagement with one another in such a way that there is a firm coupling between the interacting form cylinder 49 and transfer cylinder 48. The gear 53 of the transfer cylinder 48 is via a gear 56, for. B. a pinion 56 of the drive motor 57, driven and forms a fixed drive assembly 58 for the second pair 47. On the pin 51 of the transfer cylinder 48, a second gear 59 is rotatably mounted, which, however, by means of a switchable coupling 61, z. B. a coupling 61 is selectively non-rotatably connected to the pin 51. This gearwheel 59, like the gearwheel 24 of the pair 02, engages in a form-fitting manner in the gearwheel 27 arranged on the journal 16 of the satellite cylinder 08 in a rotationally fixed manner. The drive motor 57 is also preferably arranged stationary with respect to the frame wall 18 or 28.

In contrast to FIG. 7, the exemplary embodiment according to FIG. 8 has the arrangement shown in FIG. 3 (but without gear 33 arranged in a rotationally fixed manner) as a mirror image of the satellite cylinder 08, but in a second drive plane. The pin 16 of the satellite cylinder 08 has both switchable clutches 12 and 61 and the cooperating gear wheels 24 and 59 which are rotatably mounted on the pin 16. With the clutch 12 or 61 open, the drive motor 06; 57 together with the gears 19 and 21 or 54 and 53 and and the pinions 22 and 56 the fixed drive assembly 23 and 58. By closing the clutch 12 and / or 61, the satellite cylinder 08 can be driven. It is also possible with both designs according to FIGS. 7 and 8, with a corresponding selection of the couplings 12; 61 all cylinders 03; 04; 08; 48; 49 via one or both drive motors 06; 57 to drive.

The variant indicated in dashed lines in FIG. 8, wherein instead of the drive motor 57 with associated pinion 56, a drive motor 62 directly the pin 16 of the satellite cylinder 08 drives, leads to a further possibility for realizing a fixed coupling of a pair 02 with the drive motor 06, the pair 02 being optionally connectable to the third cylinder 08.

9 shows a five-cylinder printing unit 46, the drive of the first forme cylinder 03, the first transfer cylinder 04 and the satellite cylinder 08 by means of the two drive motors 06; 57 and the clutch 12 according to FIG. 2 or 5. The gear 27 arranged in a rotationally fixed manner on the pin 16 of the satellite cylinder 08 meshes with the gear 53 likewise arranged in a rotationally fixed manner on the pin 51 of the transfer cylinder 48, which in turn meshes with the gear 54 arranged on the pin 52 of the forme cylinder 49. The coupling 61 from FIG. 7 or 8 is omitted in this variant and leads to a fixed drive assembly 58 between the satellite cylinder 08, the second transmission 48 and the second forme cylinder 49. The drive assemblies 23 and 58 are, as shown by way of example in FIGS. 8 and 9 to arrange on different levels.

The solutions shown in the exemplary embodiments one to nine provide standardizable basic configurations for the flexible configuration of larger cylinder assemblies, such as, for example, six- or seven-cylinder printing units designed as Y or λ, or nine- or ten-cylinder printing units designed as satellite units or satellite systems ,

The drives of the gearwheels 21; mentioned in the exemplary embodiments and shown in FIGS. 1 to 9; 24; 53; 59 by the drive motors 06; 57 via assigned and as pinion 22; 31 or 56 trained gears, 22; 31 or 56 can also be done in a different way. So the gears 21; 24; 53; 59 for example also via drive belts by the respective drive motors 06; 57 are driven. However, it is also possible to use the pinion 22; 31 and 56 and the cooperating gear 21; 24; 53; 59 driven pins 14; 16; 17; 51 direct through the rotor of a drive motor 06; 57, possibly coupled via a joint. Such a direct drive takes place, for example, in the variant shown in broken lines in FIG. 8 by the drive motor 62 for the pin 16.

Reference numerals list

01 printing unit

02 pair, first

03 cylinder, forme cylinder, first (02)

04 cylinder, transfer cylinder; first (02) 05

06 drive motor (02)

07 Drive system (02)

08 cylinder, third, satellite cylinder, steel cylinder, impression cylinder

09 cylinder, third, transmission cylinder 10

11 pressure point

12 coupling, switchable, coupling

13 pins (03)

14 pins (04) 15

16 cones (08)

17 cones (09)

18 frame wall, housing wall

19 gear (13) 20

21 gear (14)

22 gear, pinion (06)

23 Drive system

24 gear, rotatable (14) 25

26 gear (08)

27 gear (09) Frame wall, housing wall drive motor, second

Gear, pinion (29)

Gearwheel, rotatable (16; 17)

Coupling, switchable, clutch gear cylinder, forme cylinder, second four-cylinder printing unit

Pin (38) gear (41) gear, rotatable (41) coupling, switchable, coupling

Five-cylinder printing unit pair, second cylinder, transfer cylinder, second (47) cylinder, forme cylinder, second (49)

Pin (48) Pin (49) Gear (48) Gear (49)

Gear, pinion (57) Drive motor (47) Drive assembly (47) Gear wheel, rotatable (48)

Coupling, coupling, switchable (59) drive motor

Claims

Expectations

1. Printing unit, which comprises a pair (02) of a forme cylinder (03) and a transfer cylinder (04) acting together with the forme cylinder (03) and a third cylinder (08; 09) forming a pressure point (11) with the transfer cylinder (04) ), the drive of the forme cylinder (03) and the drive of the transfer cylinder (04) forming a firmly coupled drive system (23), which is driven by a common drive motor (06) on the transfer cylinder (04) during pressing, characterized in that that the drive of the third cylinder (08; 09) can be switched optionally via a first clutch (12) and can be mechanically coupled to the drive system (23) of the pair (02).

2. Printing unit according to claim 1, characterized in that the forme cylinder (03) and the transfer cylinder (04) are firmly coupled by gears (19; 21) which are in engagement with one another.

3. Printing unit according to claim 2, characterized in that the toothed wheels (19; 21) are each connected in a rotationally fixed manner to a pin (13; 14) of the form cylinder (03) and the transfer cylinder (04).

4. Printing unit according to claim 1, characterized in that a first switchable clutch (12) is arranged between the drive assembly (23) and the drive of the third cylinder (08; 09) having a pin (16; 17).

5. Printing unit according to claim 4, characterized in that the coupling (12) is rotatably connected to one of the pins (14; 16; 17) of the cylinders (04; 08; 09) and rotatably on one of the pins (14; 16; 17) mounted gear (24) optionally this fixes together on the pin (14; 16; 17).

6. Printing unit according to claim 5, characterized in that the rotatably mounted gear (24) and the clutch (12) are arranged on the pin (14) of the transfer cylinder (04).

7. Printing unit according to claim 6, characterized in that the optionally fixable gear (24) meshes with a non-rotatably arranged on the pin (16; 17) of the third cylinder (08; 09) arranged gear (26; 27).

8. Printing unit according to claim 5, characterized in that the rotatably mounted gear (24) and the clutch (12) on the pin (16; 17) of the third cylinder (08; 09) are arranged.

9. Printing unit according to claim 8, characterized in that the optionally fixable gear (24) meshes with the non-rotatably arranged on the pin (14) of the transfer cylinder (04) arranged gear (21).

10. Printing unit according to claim 6, characterized in that the drive of the pair (02) by the drive motor (06) via a gear (22) on the gear (21) of the transfer cylinder (04).

11. Printing unit according to claim 8, characterized in that the drive of the pair (02) by the drive motor (06) via a gear (22) on the optionally on the pin (16; 17) of the third cylinder (08; 09) fixable Gear (24) takes place.

12. Printing unit according to claim 1, characterized in that the printing unit has a second drive motor (29).

13. Printing unit according to claims 1 and 12, characterized in that by means of the second drive motor (29) which is rotatable on the pin (14) of the Transfer cylinder (04) mounted gear (24) can be driven via a gear (31).

14. Printing unit according to claims 1 and 13, characterized in that by means of the second drive motor (29) a gear (34; 59) rotatably mounted on the pin (16; 17) of the third cylinder (08; 09) via a gear ( 31; 56) can be driven.

15. Printing unit according to claim 7, characterized in that the gear (26; 27) connected to the third cylinder (08; 09) in a manner fixed against relative rotation with a gear ((; 48; 48) arranged on a pin (41; 51). 42; 43; 53) combs.

16. Printing unit according to claim 14, characterized in that the gearwheel (34; 59) optionally fixable with the third cylinder (08; 09) with a gearwheel (34; 59) arranged on a pin (41; 51) of a further cylinder (38; 48) 42; 43; 53) combs.

17. Printing unit according to claim 1, characterized in that the third cylinder (09) is designed as a transfer cylinder (09) cooperating with a second forme cylinder (38).

18. Printing unit according to claim 1, characterized in that the third cylinder (08) is designed as a satellite cylinder (08).

19. Printing unit according to claim 18, characterized in that the satellite cylinder (08) interacts with a second pair (47) of a second transfer cylinder (48) and a second forme cylinder (49) forming a five-cylinder printing unit (46).

20. Printing unit according to claim 19, characterized in that at least the The forme cylinder (49) and the transfer cylinder (48) of the second pair (47) form a fixed drive assembly (58) with one another.

21. Printing unit according to claim 20 and one of claims 15 or 16, characterized in that the drive of the fixed drive assembly (58) of the second pair (47) via one of the gears (27; 59) on the satellite cylinder (08).

22. Printing unit according to claim 20, characterized in that the fixed drive assembly (58) of the second pair (47) by a drive motor (57) via a gear (56) on the gear (53) of the transfer cylinder (48).

23. Printing unit which has at least a first pair (02) of a first forme cylinder (03) and a first transfer cylinder (04) and a second pair (47) of a second forme cylinder (49) and a second transfer cylinder (48) the forme cylinder (03; 49) and the transfer cylinder (04; 48) interacting with this forme cylinder (03; 49) form a firmly coupled drive system (23; 58), each of which has its own drive motor (06; 57) while being pressed can be driven, characterized in that a satellite cylinder (08) cooperating with the two transmission cylinders (04; 48) can be mechanically coupled to one of the two or to both drive assemblies (23; 58) or detachable from both drive assemblies (23; 58) is.

24. Printing unit which has at least a first pair (02) of a first forme cylinder (03) and a first transfer cylinder (04) as well as a second pair (47) of a second forme cylinder (49) and a second transfer cylinder (48), with each the forme cylinder (03; 49) and the transfer cylinder (04; 48) interacting with this forme cylinder (03; 49) form a firmly coupled drive system (23; 58), characterized in that one together with the two transfer cylinders (04; 48) acting satellite cylinder (08) one Has drive motor (62) to which either one or both drive assemblies (23; 58) can be mechanically coupled or from which both drive assemblies (23; 58) can be detached.