EP1318915B1 - Drive of a printing unit having a coupling - Google Patents

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

The invention relates to a printing unit according to the preamble of claim 1.

By EP 06 44 048 B1, a printing machine is known, wherein each one of form and transfer cylinders existing pair of cylinders is mechanically fixed coupled and each pair has its own drive motor. The couples can not be coupled with each other.

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

From DE 196 03 663 A1, a four-cylinder printing unit is known, wherein the two co-operating transfer cylinders are fixedly coupled together, and optionally driven by the drive of one or both associated form cylinder. In one embodiment, another cylinder pair drivable from the forme and transfer cylinders can be engaged on this four-cylinder printing unit and can be coupled into the drive assembly of the two first-mentioned transfer cylinders for the purpose of synchronization or register-accurate printing.

EP 09 97 273 A2 discloses a four-cylinder pressure unit, wherein the four cylinders are drivable by two drive motors. Two clutches on the pins of the two forme cylinders and two each on the pins of the two transfer cylinders axially displaceable gears allow the formation of different drive assemblies.

WO 00/06384 A1 discloses printing units with satellite cyl in modular design, which allow flexible configuration of a variety of production options. The satellite cylinder has its own drive motor or can be coupled to one of the cooperating pairs of cylinders.

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

The object is achieved by the features of claim 1.

The achievable with the present invention consist in particular that a large variety of operation and variability of a printing unit or a cylinder assembly is created at the same time high reliability by redundancy, without each cylinder is provided with its own drive. The invention combines the advantages of high flexibility from the expensive and expensive single drive technology and the advantages of the drive of coupled cylinder groups, namely the saving of engines and the mechanical synchronization of the connected cylinders.

As a result of the optimized arrangement of switchable clutches and motors, as many of the desired modes of operation are usually possible as with the design of all cylinders with individual drives. Thus, cylinder or cylinder groups can be moved independently of one another when the clutch is open, which is necessary, for example, when printing plate or blanket change, when drawing in a paper web, during independent inking or washing of rollers and cylinders. In many cases, an auxiliary drive is thus possible, since this can be taken over by the main drives with appropriate switching of the clutches. Likewise, it is possible to re-direct individual cylinders or cylinder groups of larger cylinder assemblies by forming new drive assemblies by opening clutches and closing other clutches.

A major advantage is also the ability to standardize individual small groups, such as a pair of cylinders from a forme cylinder and a transfer cylinder with a corresponding clutch, and in any way depending on Delivery request to combine larger units. A standard group can also represent a pair mentioned above together with an impression cylinder. The pins of the cylinder are z. B. optionally with or without clutch, with rotatable or lockable gear, suitable for a first or second drive level executable.

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

In particular, in connection with gum-to-gum to gum-to-steel operation switchable pressure units, d. H. At least one of the transfer cylinders is selectively engageable with a counter-pressure cylinder or a second transfer cylinder, depending on the printing unit, a reversal of one or more cylinders, d. H. the release of drive assemblies and the formation of new drive assemblies required. In a five-cylinder printing unit, the embodiment with a drive motor per form / transfer cylinder pair is advantageous, the impression cylinder depending on the paper guide and operation with one of the two or with both drive motors or pairs can be coupled.

In such advantageous embodiments, with only two drive motors and only two clutches for a five-cylinder printing unit, a flying plate change is possible without corresponding devices are required for re-acceleration auxiliary drives or for Umfangsregisterverstellung and / or finding the register before re-coupling.

In an embodiment with only one drive motor and only two clutches is a one-sided printing plate change, z. B. possible to prepare an impression.

For a six-cylinder y or λ printing unit, flexibly usable z. B. for the 2/1 print, the flying one-sided plate change or imprint function during the 1/1 printing, for example, an embodiment as extended by a further pair of cylinders four-cylinder printing unit is advantageous. For this design, only a total of two drive motors and two switchable clutches are required.

Particularly advantageous and efficient, the invention can also be used in seven-cylinder in nine-cylinder or in ten-cylinder printing units, if maximum flexibility is required with a minimum number of engines.

In the case of several directly or via an impression cylinder together acting cylinder pairs of forming and transfer cylinder is possible by decoupling the possibility of each other, the relative rotational position of the forme cylinder, z. B. for the purpose of adjusting the perimeter or color register to change.

Also advantageous in the case of multiple, coupled via couplings drives z. T. the high reliability due to the redundancy in the number of usable drive motors, the so-called back-up function.

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

Fig. 1

eine schematische Darstellung einer Druckeinheit mit drei Zylindern;

Fig. 2

eine schematische Darstellung einer Druckeinheit mit drei Zylindern;

Fig. 3

eine schematische Darstellung einer Druckeinheit mit drei Zylindern;

Fig. 4

eine schematische Darstellung einer Druckeinheit mit drei Zylindern;

Fig. 5

eine schematische Darstellung einer Druckeinheit mit vier Zylindern;

Fig. 6

eine schematische Darstellung einer Druckeinheit mit vier Zylindern;

Fig. 7

eine schematische Darstellung einer Druckeinheit mit fünf Zylindern;

Fig. 8

eine schematische Darstellung einer Druckeinheit mit fünf Zylindern;

Fig. 9

eine schematische Darstellung einer Druckeinheit mit fünf Zylindern.

Show it:

Fig. 1

a schematic representation of a printing unit with three cylinders;

Fig. 2

a schematic representation of a printing unit with three cylinders;

Fig. 3

a schematic representation of a printing unit with three cylinders;

Fig. 4

a schematic representation of a printing unit with three cylinders;

Fig. 5

a schematic representation of a printing unit with four cylinders;

Fig. 6

a schematic representation of a printing unit with four cylinders;

Fig. 7

a schematic representation of a printing unit with five cylinders;

Fig. 8

a schematic representation of a printing unit with five cylinders;

Fig. 9

a schematic representation of a printing unit with five cylinders.

A printing unit 01 of a printing press, in particular a web-fed rotary printing press, has a first pair 02 of cooperating cylinders 03; 04, z. B. a first forme cylinder 03 and cooperating with this first transfer cylinder 04. The pair 02 may be fixed or switchable mechanically coupled to all embodiments with a color and / or dampening unit. The drive of the pair 02 is mechanically coupled and is driven during production by a common drive motor 06. The drive motor 06 drives the transfer cylinder 04, which via a mechanical coupling, for example via a positive coupling by means of gears, abrades on the forme cylinder 03.

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

The transfer cylinder 04 of the pair 02 forms with a third cylinder 08 or 09, z. B. a satellite cylinder 08, z. As a steel cylinder 08, or a second transfer cylinder 09, a pressure point 11, at which the two cylinders 04 and 08 and 09 in a pressure-on position via a running between the cylinders 04 and 08 and 09 track, z. As a Bedruckstoff- 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 the third cylinder 08; 09 are connected to each other by means of a switchable, mechanical coupling 12, for example by means of a switchable coupling 12.

In a first, three-cylinder group of pressure units (Figures 1, 2, 3 and 4), the third cylinder 08; 09 executed as a satellite cylinder 08. The printing unit 01 represents here in the first case, for example, a three-cylinder color deck or a part of a larger printing unit with designed as a satellite cylinder 08 impression cylinder 08.

In a printing unit according to 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 abrades on the forme cylinder 04.

The cylinders 03; 04; 08 bzw.09 have drive side respectively associated pin 13; 14; 16 and 17, which on both end sides in a frame wall 18, for example a housing wall 18, are stored. At the pin 13 of the forme cylinder 03 and the pin 14 of the transfer cylinder 04 front wheels 19 and 21 are arranged rotationally fixed. These are engaged with each other so that a fixed mechanical coupling between the co-operating Form 03 and transfer cylinder 04 exists.

The gear 21 of the transfer cylinder 04 is directly or via a gear 22, z. As a pinion 22 of the drive motor 06, driven and forms for the pair 02 together with the gear 19, a fixed drive network 23. On the pin 14 of the transfer cylinder 04, a second gear 24 is rotatably mounted, which, however, by means of the switchable clutch 12 selectively rotatably is connectable to the pin 14. This gear 24 engages positively in a pin 16 and 17 of the third cylinder 08; 09 rotationally fixed gear 26 and 27 a. The drive motor 06 is preferably stationary with respect. The frame wall 28, for example, on a housing wall 28 or a separate frame arranged. Is the cylinder 04, z. B. via an eccentric bearing, pivotally mounted, so the drive motor 06 may also be arranged stationary relative to the driven transfer cylinder 04, or the meshing pinion gear 22 and 21 are arranged with sufficient clearance. The third cylinder 08; 09 is to be stopped by opening the clutch 12 regardless of the first pair 02 or a further drive assembly, not shown movable while the pair 02, for example, for printing plate or blanket change, pre-inking or washing regardless of the third cylinder 08; 09 is movable, decelerate or accelerate again. When the clutch 12 is closed, the third cylinder 08; 09 mechanically and synchronously to the pair 02 anteibbar. Especially when retracted web, it is possible to one of the cylinder 03; 04 or the inking unit to equip, without the web is promoted.

In a printing unit according to Figure 2, the arrangement of FIG. 1 in addition to a second drive motor 29, which via a gear 31, z. B. a pinion 31, with the optionally rotatably on the pin 14 connectable gear 24 of the transfer cylinder 04 meshes. The third cylinder 08; 09 is additionally rotatable independently compared to the first printing unit with the clutch 12 open. When the clutch 12 is a common, redundancy exhibiting, drive by both drive motors 06 and 29 is possible.

In contrast to Figures 1 and 2, the third pressure unit (Figure 3), the switchable clutch 12 and the cooperating rotatably mounted gear 24 on the pin 16; 17 of the third cylinder 08; 09 on. The drive motor 06 drives via the associated pinion 22 to selectively detectable mounted gear 24, which is in engagement with the gear 21 of the transfer cylinder 04, and this in turn with the gear 19 of the forme cylinder 03. When the clutch 12 is open, the drive motor 06 together with the gears 24, 21 and 19 forms the fixed drive network 23. By closing the clutch 12, the satellite cylinder 08 can be driven. As shown in phantom in Fig. 3, the pin 16; 17 have another, non-rotatably mounted gear 33, which meshes with, for example, a gear, not shown, another cylinder or drive network.

FIG. 4 shows a development of the printing unit 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 to the pin 16; 17 arranged switchable coupling 36, z. B. a second clutch 36 with the pin 16; 17 rotatably connected. As also shown in Fig. 4, the gear 34, similar to the embodiment 2, via the pinion 31 by the second drive motor 29 to be driven. The second, rotatably mounted gear 24 meshes, for example, with a dashed line shown gear 37 of a further cylinder or drive network, not shown. Optionally, by the two clutches 12; 36 all cylinders 03; 04; 08 and 09 by both drive motors 06; 29 together, or the pair 02 and the third cylinder 08; 09 (possibly together with another Drive system) are each driven independently.

In a second group of pressure units (FIGS. 5 and 6), the third cylinder 08, which cooperates with the first pair 02, is; 09 executed as a second transfer cylinder 09, which in turn with a second cylinder 38 z. B. form cylinder 38 cooperates. By way of example from the printing units 1 to 4 for the three-cylinder printing unit 01, FIGS. 5 and 6 show two printing units for connecting the drive from the second transfer cylinder 09 to the co-operating second forme cylinder 38 of a four-cylinder printing unit 39.

In a printing unit according to Figure 5, the second forme cylinder 38 on its pin 41 rotatably on a gear 42 which meshes with the gear 27 of the second transfer cylinder 09 and is in fixed drive connection.

In Fig. 6, however, the pin 41 has a rotatably mounted gear 43, which via a pin 41 arranged on the switchable coupling 44, z. B. a clutch 44, optionally on the pin 41 rotatably coupled.

For the drive configuration of the first pair 02 together with the second transfer cylinder 09 and the pressure units shown in Figs. 3 and 4 are also.

In embodiments according to the invention (FIGS. 7 to 9) for a five-cylinder printing unit t46, for B. as a semi-satellite, the third cylinder 08 cooperating with the first pair 02 is executed as in the first group as a satellite cylinder 08, but as with a second pair 47 of cylinders 48; 49, z. B. a transfer cylinder 48 and a form cylinder 49 cooperates.

The arrangement shown in Figure 7 results in mirror image to the satellite cylinder 08 for the two pairs 02; 47 from the arrangement of embodiment 1 (Fig. 1). The Cylinder 48; 49 of the second pair 47 also have drive side respectively associated pin 51; 52, which are mounted in the frame wall 18. At the pin 52 of the forme cylinder 49, as well as on the pin 51 of the transfer cylinder 48 are frontally gears 54; 53 rotatably arranged, which are engaged with each other so that a fixed coupling between the cooperating form 49 and transfer cylinder 48 consists. The gear 53 of the transfer cylinder 48 is connected via a gear 56, z. B. a pinion 56 of the drive motor 57, driven and forms for the second pair 47 a fixed drive assembly 58. 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 clutch 61 selectively rotatably connected to the pin 51 is connectable. This gear 59 engages, as the gear 24 of the pair 02, positively in the pin 16 of the satellite cylinder 08 rotatably mounted gear 27 a. The drive motor 57 is likewise preferably 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) in mirror image to 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, rotatably mounted on the pin 16 gears 24 and 59 on. When the clutch is open 12 and 61 respectively form the drive motor 06; 57 together with the gears 19 and 21 or 54 and 53 and the pinions 22 and 56, the fixed drive assembly 23 and 58. By closing the clutch 12 and / or 61 of the satellite cylinder 08 is driven. Also, it is possible in both embodiments of Figures 7 and 8, with appropriate selection of the clutches 12; 61 all cylinders 03; 04; 08; 48; 49 via one or both drive motors 06; 57 drive.

The dashed line in Fig. 8 indicated variant of the invention, wherein instead of the drive motor 57 with associated pinion 56, a drive motor 62 directly to the pin 16 of the satellite cylinder 08 drives, leads to a further possibility for the realization of a fixed coupling of a pair 02 with the drive motor 06, wherein the pair 02 is selectively coupled to the third cylinder 08.

In Fig. 9, a five-cylinder printing unit 46 is shown, wherein 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 as shown in FIG. 2 or 5 takes place. The non-rotatably mounted on the pin 16 of the satellite cylinder 08 gear 27 meshes with the likewise non-rotatably mounted on the pin 51 of the transfer cylinder 48 gear 53, which in turn meshes with the arranged on the pin 52 of the forme cylinder 49 gear 54. The coupling 61 of FIG. 7 or 8 is omitted in this variant and leads to a fixed drive assembly 58 between satellite cylinder 08, second transmission 48 and second form cylinder 49. The drive assemblies 23 and 58 are, as shown in FIGS. 8 and 9 by way of example to arrange in different levels.

The solutions presented in the printing units one to nine also provide standardizable basic configurations for the flexible configuration of larger cylinder assemblies, such as six- or seven-cylinder printing units designed as Y or λ, of nine- or ten-cylinder printing units embodied as satellite unit or satellite system ,

The drives mentioned in the Druckheiten, and shown in Figures 1 to 9 of the gears 21; 24; 53; 59 by the drive motors 06; 57 via assigned and as pinion 22; 31 and 56 trained gear, 22; 31 or 56 can also be done in other ways. Thus, the gears 21; 24; 53; 59, for example, via drive belt through the respective drive motors 06; 57 are driven. But it is also possible in the figures in each case via the pinion 22; 31 and 56 and the cooperating gear 21; 24; 53; 59 driven pin 14; 16; 17; 51 directly through the rotor of a drive motor 06; 57, possibly coupled via a joint to drive. Such a direct drive is carried out, for example, in the variant shown by dashed lines in FIG. 8 by the drive motor 62 for the pin 16.

LIST OF REFERENCE NUMBERS

01

printing unit

02

Couple, first

03

Cylinder, forme cylinder, first (02)

04

Cylinders, transfer cylinders; first (02)

05

-

06

Drive motor (02)

08

Cylinder, third, satellite cylinder, steel cylinder, impression cylinder

09

Cylinder, third, transfer cylinder

10

-

11

bruise

12

Coupling, switchable, clutch

13

Cones (03)

14

Cones (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)

28

Frame wall, housing wall

29

Drive motor, second

30

-

31

Transmission, pinion (29)

32

-

33

gear

34

Gear, rotatable (16; 17)

35

-

36

Coupling, switchable, clutch

37

gear

38

Cylinder, forme cylinder, second

39

Four-cylinder printing unit

40

-

41

Cones (38)

42

Gear (41)

43

Gear, rotatable (41)

44

Coupling, switchable, clutch

45

-

46

Five-cylinder printing unit

47

Couple, second

48

Cylinder, transfer cylinder, second (47)

49

Cylinder, forme cylinder, second (49)

50

-

51

Cones (48)

52

Cones (49)

53

Gear (48)

54

Gear (49)

55

-

56

Transmission, Pinion (57)

57

Drive motor (47)

58

Drive system (47)

59

Gear, rotatable (48)

60

-

61

Coupling, coupling, switchable (59)

62

drive motor

Claims (15)

1. A printing unit (01) which has a first pair (02) of a first forme cylinder (03) and a transfer cylinder (04) co-operating with the first forme cylinder (03), a second pair (47) of a second forme cylinder (49) and a second transfer cylinder (48), and a satellite cylinder (08) forming a printing location (11) in each case with the transfer cylinders (04), wherein the drive of the first forme cylinder (03) and the drive of the first transfer cylinder (04) form a drive assembly (23) which is coupled in a fixed manner and which is driven during the printing by a common drive motor (06) on the transfer cylinder (04), characterized in that the drive of the satellite cylinder (08) is capable of being coupled mechanically by way of a first clutch (12) to the drive assembly (23) of the first pair (02) so as to be capable of being selectively engaged and disengaged, in such a way that when the clutch (12) is engaged the satellite cylinder (08) is driven by the drive motor (06) and the drive assembly (23) is driven by the said satellite cylinder (08).
2. A printing unit according to Claim 1, characterized in that the first forme cylinder (03) and the first transfer cylinder (04) are coupled in a fixed manner by toothed wheels (19; 21) which engage with one another.
3. A printing unit according to Claim 2, characterized in that the toothed wheels (19; 21) are connected to the first forme cylinder (03) and the first transfer cylinder (04) in a fixed manner on a pin (13; 14) on the said cylinders in each case.
4. A printing unit according to Claim 1, characterized in that the first clutch (12) which is capable of being engaged and disengaged is arranged between the drive assembly (23) and the drive of the satellite cylinder (08) comprising a pin (16).
5. A printing unit according to Claim 4, characterized in that the clutch (12) is connected in a rotationally fixed manner to one of the pins (14; 16) of the first transfer cylinder (04) or the satellite cylinder (08), and co-operates with a toothed wheel (24) mounted in a rotatable manner on one of the pins (14; 16) so as to fix the said toothed wheel (24) on the pin (14; 16) in a selective manner.
6. A printing unit according to Claim 5, characterized in that the rotatably mounted toothed wheel (24) and the coupling (12) are arranged on the pin (16) of the satellite cylinder (08).
7. A printing unit according to Claim 6, characterized in that the toothed wheel (24) which is capable of being selectively fixed meshes with the toothed wheel (21) arranged on the pin (14) of the first transfer cylinder (04) in a rotationally fixed manner.
8. A printing unit according to Claim 6, characterized in that the drive of the first pair (02) takes place by the drive motor (06) by way of a gear mechanism (22) to the toothed wheel (24) capable of being fixed on the pin (16; 17) of the satellite cylinder (08) in a selective manner.
9. A printing unit according to Claim 1, characterized in that the printing unit has a second drive motor (29).
10. A printing unit according to Claims 1 and 9, characterized in that a toothed wheel (34; 59) mounted on the pin (16) of the satellite cylinder (08) in a rotatable manner is capable of being driven by means of the second drive motor (29; 57) by way of a gear mechanism (31; 56).
11. A printing unit according to Claim 10, characterized in that the toothed wheel (34; 59) capable of being fixed with the satellite cylinder (08) in a selective manner meshes with a toothed wheel (53) arranged on a pin (41; 51) of the second transfer cylinder (48).
12. A printing unit according to Claim 1, characterized in that the printing unit is constructed in the form of a five-cylinder printing unit (46).
13. A printing unit according to Claim 1, characterized in that at least the forme cylinder (49) and the transfer cylinder (48) of the second pair (47) form a fixed drive assembly (58) with each other.
14. A printing unit according to Claim 13 or 11, characterized in that the drive of the fixed drive assembly (58) of the second pair (47) takes place by way of the toothed wheel (34; 59) on the satellite cylinder (08).
15. A printing unit according to Claim 1, characterized in that the forme cylinder (03; 49) and the transfer cylinder (04; 48) co-operating with the said forme cylinder (03; 49) of the two pairs (02; 47) in each case form a drive assembly (23; 58) which is coupled in a fixed manner and which is capable of being driven by a separate drive motor (06; 57) during the printing, and the satellite cylinder (08) which co-operates with the two transfer cylinders (04; 48) is capable of being selectively coupled mechanically to one of the two drive assemblies (23; 58) or to the two drive assemblies (23; 58) or released from the two drive assemblies (23; 58).

Images