EP1303405B1 - Printing group of an offset rotary printing machine - Google Patents

Abstract

The printing group (01,02) has at least one form cylinder (03,04,07), at least one transfer cylinder (08,09,11,12) and at least one inking system (18,19,21,22). Two printing groups are arranged opposite each other. The printing groups can be arranged so that their spacing can be varied transverse to the cylinder rotation axes. The arrangement of printing groups can be altered in the direction parallel to the cylinder rotation axes.

Description

The invention relates to a printing unit of an offset rotary printing press according to the preamble of claim 1 or 2.

By EP 07 49 369 B1 a printing unit for a multi-color roller printing press for fine and reprint is known in which two printing units in so-called bridge construction are arranged opposite each other in a frame, wherein the arrangement of the printing couples relative to each other transversely to the direction of the axes of rotation of the cylinder changeable is.

A known from DE 198 33 468 A1 offset printing machine also has two opposing pressure, which can be separated along a vertical separation plane and arranged to change the distance.

In EP 09 58 917 A1 a web-fed rotary printing press is described which has a plurality of printing units constructed from two printing units each. The printing units are arranged one above the other and can be separated along a substantially horizontally extending parting plane. The individual printing units can be moved vertically transversely to the axis of rotation of the cylinder, so that for the implementation of maintenance, for example, a distance between the individual printing units can be produced.

From EP 06 38 419 B1, a web-fed rotary printing press is known, the individual components, in particular the cylinder elements and their associated inking and dampening units, are mounted in a support frame. The inking and dampening units are designed as movable units that can be pulled out of the printing unit in the axis-parallel direction of the axes of rotation.

DE 199 19 864 C1 discloses two five-cylinder pressure units, which are displaceable relative to each other either transversely or along the axis of rotation of the cylinder.

The invention has for its object to provide a printing unit of an offset rotary printing machine.

The object is achieved by the features of claim 1 or 2.

The achievable with the present invention consist in particular that the required space can be reduced in front of and behind the paired printing units. Because to perform maintenance work, the printing units must not, as known from the prior art, are moved apart transverse to the direction of the axes of rotation of the cylinder. Instead, the printing units are arranged laterally offset in the axis-parallel direction of the axes of rotation of the cylinder, so that the printing units for the necessary work are accessible without the distance between the printing units must be changed transversely to the direction of the axes of rotation of the cylinder. This measure is particularly advantageous when a plurality of printing couples arranged in pairs are arranged one behind the other, for example in the manner of printing towers arranged one behind the other, since in this case the successively arranged pairs of printing couples can be set up at a smaller distance from each other. Another advantage results from the fact that certain parts of the printing units, namely the parts that are outermost on one side of a printing unit, are fully accessible even with a relatively small lateral offset between the printing units. This makes it possible, for example, to arrange particularly maintenance-intensive parts of the printing units in this area of the printing units, so that the printing units do not have to be completely moved apart to inspect or maintain these maintenance-intensive parts, but only so far that the parts to be serviced are sufficiently accessible ,

Since not only individual consisting of inking and dampening units are laterally from the printing units extendable, but the entire opposing printing units can be arranged laterally offset, it is possible that in particular maintenance work on substantially all parts of the printing units can be performed without essentially further measures to open the printing units are required.

In principle, it is sufficient if, in order to separate the opposing printing units, these are arranged laterally offset relative to one another in the axis-parallel direction of the axes of rotation of the cylinders. It is particularly advantageous, however, if the printing units can additionally be arranged at least slightly different distances relative to each other. When moving apart one of two opposing printing units existing printing unit then, for example, first a printing unit can be moved in the direction transverse to the axes of rotation of the cylinder until at least a slight distance between the printing units has arisen. By this movement transversely to the direction of the axes of rotation of the cylinder, the printing units can first be disengaged. Subsequently, a printing unit in the axis-parallel direction of the axes of rotation of the cylinder can be moved to make the inner parts of the printing units accessible.

Advantageous embodiments of the invention result from the combination of features according to the invention with features which are already known from the prior art. In particular from EP 07 49 369 B1 and DE 198 33 468 A1 features are known, the combination of which is particularly advantageous for an inventive arrangement of printing units.

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

Fig. 1

die Anordnung einer ersten Ausführungsform von Druckwerken im seitlichen Querschnitt;

Fig. 2

eine schematische Darstellung der Anordnung der Druckwerken gemäß Fig. 1 im Betriebszustand in Ansicht von oben;

Fig. 3

eine schematische Darstellung der Anordnung der Druckwerke gemäß Fig. 1 beim Trennen der Druckwerke in Ansicht von oben;

Fig. 4

eine schematische Darstellung der Anordnung der Druckwerke gemäß Fig. 1 beim Öffnen der Druckwerke in Ansicht von oben;

Fig. 5

die Anordnung einer zweiten Ausführungsform von Druckwerken im seitlichen Querschnitt;

Fig. 6

eine schematische Darstellung der Anordnung der Druckwerke gemäß Fig. 5 im Betriebszustand in Ansicht von oben;

Fig. 7

eine schematische Darstellung der Anordnung der Druckwerke gemäß Fig. 5 im geöffneten Zustand in Ansicht von oben.

Show it:

Fig. 1

the arrangement of a first embodiment of printing units in the lateral cross section;

Fig. 2

a schematic representation of the arrangement of the printing units of Figure 1 in the operating state in top view.

Fig. 3

a schematic representation of the arrangement of the printing units of Figure 1 when separating the printing units in top view.

Fig. 4

a schematic representation of the arrangement of the printing units of Figure 1 when opening the printing units in top view.

Fig. 5

the arrangement of a second embodiment of printing units in the lateral cross section;

Fig. 6

a schematic representation of the arrangement of the printing units of Figure 5 in the operating state in top view.

Fig. 7

a schematic representation of the arrangement of the printing units of FIG. 5 in the open state in top view.

An offset rotary printing press or a section of an offset rotary printing press has, for example, eight printing units in modular construction, of which in FIG. 1 only the printing units 01; 02 are shown. The construction of the individual printing units 01; 02 corresponds to the construction described in DE 198 33 468 A1 in the essential features.

Each of these printing units 01; 02 is designed as a so-called 5-cylinder printing unit and essentially has two forme cylinder 03; 04; 06; 07, z. B. plate cylinder, two transfer cylinders 08 each; 09; 11; 12, z. B. blanket cylinder and in each case a counter-pressure cylinder 13; 14, z. B. satellite cylinder on. The pins of these cylinders 03; 04; 06; 07; 08; 09; 11; 12; 13; 14 are on each side of the offset rotary printing press in each case a side frame 16; 17 stored. In the present embodiment, the pins of the transfer cylinder 08; 09; 11; 12 pivotally mounted in eccentric bushings or three-ring bearing technology, so that the transfer cylinder 08; 09; 11; 12 to the associated impression cylinder 13; 14 are turned on and off. It is also possible, the Gege-, fruckz%, linder 13; 14 to the associated Überkragungszylinder 08; 09; 11; 12, z. B. by means of eccentric bushings, three-ring bearings or linear guide, hiring.

In the present embodiment, each cylinder 03; 04; 06; 07; 08; 09; 11; 12; 13; 14 provided with its own speed-controlled and / or position-controlled drive motor. But it is also possible for each pair of forming and transfer cylinders 03, 08; 04, 09; 06, 11; 07, 12 assign a drive motor and to couple this pair form fit. In this case, the impression cylinder 13; 14 has its own drive motor or is connected to one of the pairs of forming and transfer cylinders 03, 08; 04, 09; 06, 11; 07, 12 can be coupled. It is also possible, each printing unit 01; 02 assign only one drive motor and to transmit the transmitted torque, for example, with a standing wave. Regardless of the type of drive, in each case one clutch can be arranged between one or more cylinders and the respective associated drive, so that individual cylinders or cylinder groups can be connected separately. In any case, the drive motors are independent of the location and the site of the printing units 01; 02 each a side frame 16; 17 permanently assigned, so that in the 180 ° about a vertical set up printing unit 02, the drive motors are arranged on the opposite side of the printing press. The form cylinders 03; 04; 06; 07 is in each case an inking unit 18; 19; 21; 22 and a dampening unit 23; 24; 26; 27 assigned. In the illustrated embodiment, the printing unit 01, z. B. as V-printing unit 01 and the printing unit 02, z. B. as W printing unit 02, formed. The printing units 01; 02 can each be operated independently of each other as opposed five-cylinder printing units, ie two Opposite printing units functionally form a ten-cylinder satellite printing unit in a first operating mode. During this first operating state, the transfer cylinders 08; 09; 11; 12 with the respective impression cylinder 13; 14 of the V-printing unit 01 and W-printing unit 02 together. In a second operating state, two five-cylinder printing units function functionally as a nine-cylinder satellite printing unit. This operating state is shown in FIG. 1. For this purpose, the transfer cylinders 08; 09; 11; 12 of the V-printing unit 01 and the W-printing unit 02 on the impression cylinder 13 of the V-printing unit 01 on and off. The impression cylinder 14 of the W printing unit 02 is not involved in the printing process in this operating state.

The printing units 01; 02 are mounted in a support device, of which in Fig. 1, only the cross member 28; 29 are shown schematically. In this case, the V-printing unit 01 is stationary with the cross members 28; 29, where, however, the W printing unit 02 is adjustably mounted in the support device. In particular for the operation and maintenance of the printing units 01; 02 by the operator can from the printing units 01; 02 formed printing unit 01; 02 are opened. The required positioning movements for opening the from the printing units 01; 02 formed printing unit 01; 02 are shown schematically in Figs. 2 to 4.

The printing units 01; 02 are shown in FIGS. 2 to 4 only schematically with omission of the surrounding support device. In Fig. 2, the printing units 01; 02 in the operating state, which corresponds to the operating state in Fig. 1, shown in top view. The movably mounted printing unit 02 is locked to the stationary mounted printing units 01, so that the printing units 01; 02 together a stationary printing unit 01; 02 form. To open the printing unit 01; 02, the printing units 01; 02, as shown in Fig. 3, initially separated by the fact that the printing unit 02 in a direction indicated by a movement arrow 31 actuating movement in a direction transverse to the axes of rotation of the cylinder 03; 04; 06; 07; 08; 09; 11; 12; 13; 14 is moved. This creates a distance between the printing units 01; 02, so that the printing units 01; 02 are no longer engaged with each other. Subsequently, the Printing unit 02, as shown in Figure 4, in a direction indicated by the movement arrow 32 actuating movement in a direction axially parallel to the axes of rotation of the cylinder 03; 04; 06; 07; 08; 09; 11; 12; 13; 14 shifted to the side, so that depending on the lateral offset between the printing units 01; 02 ever larger areas of the interior of the printing units 01; 02 are accessible for operation and maintenance. The printing unit 02 can be so far outward, ie so far moved forward in the illustrated embodiment that the printing units 01; 02 are no longer facing each other, so that all areas of the interior of the printing units 01; 02 of in the areas 33; 34 arranged working platforms are accessible. To close the from the printing units 01; 02 formed printing units 01; 02, the printing unit 02 is moved in the reverse order and last locked to the printing unit 01.

Fig. 5 shows a second embodiment of an arrangement of printing units 48; 49; 51; 52; 58; 59; 61; 62. The upper carrier 40; 41 and the lower carrier 42; 44 of a multi-color roll rotary printing machine take a plurality of superimposed printing units 48; 49; 51; 52; 58; 59; 61; 62 in a left frame part 55, which on the side frames 46; 47, carrier-resistant. The arranged in the left frame part 55 printing units 48; 49; 51; 52 are stored stationary and are hereinafter referred to as left printing unit 48; 49; 51; 52 denotes. Between the carriers 40; 41; 42; 44 is further a on rollers 53; 54 slidable right frame member 65 arranged from the side frames 56; 57 is formed. In the side frames 56; 57 are the right printing units 58; 59; 61; 62 the left printing units 48; 49; 51; 52 arranged opposite one another.

The construction of the individual printing units 48; 49; 51; 52 and 58; 59; 61; 62 and the printing units formed therefrom corresponds to the construction described in EP 07 49 369 B1 in the essential features. Each printing unit 48; 49; 51; 52 and 58; 59; 61; Each 62 consists of a transfer cylinder 63, such as a blanket cylinder, with a forme cylinder 64, such as a plate cylinder works together. The forme cylinder 64 receives dampening solution via a dampening unit 66 and color via an inking unit 67. The inking unit 67 may, for. Example, consist of a paint tray with an ink roller, wherein the ink roller transmits its ink by means of inking rollers to the forme cylinder 64. Instead of two equally sized inking rollers and only a smaller or larger inking roller can be used. Instead of a paint tray and a paint roller z. As well as a chamber doctor blade in conjunction with an anilox roller (anilox roller) can be used. However, it is also possible to use a conventional inking unit.

Each dampening unit 66 may be formed as Sprühfeuchtwerk, which consists of a known spray, z. B. a bar with spray nozzles, which direct their spray jets on a dampening form roller. This dampening form roller is in communication with the forme cylinder 64.

The between the carriers 40; 42 stationary superposed printing units 48; 49; 51; 52 and between the carriers 41; 44 in the sliding frame part 65 superposed printing units 58; 59; 61; 62 are each directed with their transfer cylinder 63 against each other, so that in each case a web 68 or 69 can be printed on both sides. As a result, the printing units 48 form 58; 49 with 59; 51 with 61 and 52 with 62 each have a bridge pressure unit or a pressure unit in bridge construction.

The right printing unit 58; 59; 61; 62 is arranged in the displaceable frame part 65 such that it is relative to the left printing units 48; 49; 51; 52 horizontally in the axis-parallel direction of the axes of rotation of the cylinder 63; 64 can be moved. To illustrate this function, the left and the right frame part 55; 65 in Fig. 6 and 7 shown in top view. The illustration in Fig. 6 and 7 is purely schematic, omitting all details not required for understanding the function. In Fig. 6, the left and right frame members 55; 65 shown in the operating state in which they are locked together. After unlocking, the left Frame part 65, as indicated by a movement arrow 71, in the axis-parallel direction to the axes of rotation of the cylinder 63; 64 are moved to the side. These are between the carriers 40; 41; 42; 44 rails 72; 73 provided, in which the rollers 53; 54 are stored.

In addition, the right printing units 58; 59; 61; 62 relative to the left printing units 48; 49; 51; 52 in the direction of the axes of rotation of the cylinder 63; 64 are moved.

As shown in Fig. 7, the right frame member 65 so far laterally outward, d. H. in the illustrated embodiment so far to the right, be moved until the left and right printing units 48; 49; 51; 52 and 58; 59; 61; 62 are completely separated from each other and thus are well accessible to the operating personnel for operation or maintenance of arranged in the areas 74 and 76 work platforms. The displaceable right frame member 65 may, for example, by means of two double-acting cylinder, z. B. hydraulic cylinders are operated. However, it is of course also other types of drives, for example with electric motors conceivable. For guiding the right-hand frame part 65, known guide rails can be used, for example, from EP 07 49 369 B1. To achieve a high accuracy of fit in the operating position of the displaceable frame part 65, a plurality of pins projecting beyond the closing edge can be provided on the frame part 65, which can be brought into engagement in correspondingly arranged blind holes on the stationary left frame part 55.

In the working position (FIG. 5), the displaceable frame part 65 is secured against unintentional displacement by means of a mechanically acting locking device 77. The locking device 77 consists of a frame-mounted threaded bushing which forms a positive connection when closing the right frame part 65 with a carrier-mounted threaded spindle. In this case, the threaded spindle by means of a motor-driven threaded sleeve in the direction of the left Frame part 55 moves.

It is possible during standstill on the form cylinders 64 of the left and right printing unit 48; 49; 51; 52 and 58, respectively; 59; 61; 62 are manually changed by the operating personnel. For this purpose, the frame parts 55; 65 are moved so far apart until the corresponding form cylinder 64 are sufficiently accessible. Alternatively, it is possible, the pressure plates located on the form of cylinders 64 by means of each printing unit 48; 49; 51; 52 and 58, respectively; 59; 61; 62 associated printing plate changing device 78 to change. The printing plate changing device 78 may be formed, for example, like the printing plate changing device described in EP 07 49 369 B1.

The drive of the individual printing units 48; 49; 51; 52 and 58, respectively; 59; 61; 62 can be done via a standing wave or via individual individual cylinders associated drive motors. A suitable drive concept is described for example in EP 07 49 369 B1.

LIST OF REFERENCE NUMBERS

01

Printing unit, V-printing unit

02

Printing unit, W printing unit

03

form cylinder

04

form cylinder

05

-

06

form cylinder

07

form cylinder

08

transfer cylinder

09

transfer cylinder

10

-

11

transfer cylinder

12

transfer cylinder

13

Impression cylinder

14

Impression cylinder

15

-

16

side frame

17

side frame

18

inking

19

inking

20

-

21

inking

22

inking

23

dampening

24

dampening

25

-

26

dampening

27

dampening

28

crossbeam

29

crossbeam

30

-

31

movement arrow

32

movement arrow

33

Area, work platform

34

Area, work platform

35 to 39

-

40

Carrier, upper

41

Carrier, upper

42

Carrier, lower

43

-

44

Carrier, lower

45

-

46

Side frame, left

47

Side frame, left

48

Printing unit, left

49

Printing unit, left

50

-

51

Printing unit, left

52

Printing unit, left

53

role

54

role

55

Frame part, left

56

Side frame, right

57

Side frame, right

58

Printing unit, right

59

Printing unit, right

60

-

61

Printing unit, right

62

Printing unit, right

63

transfer cylinder

64

form cylinder

65

Frame part, right

66

dampening

67

inking

68

train

69

train

70

-

71

movement arrow

72

runner

73

runner

74

Area

75

-

76

Area

77

locking device

78

Printing plate changing device

Claims (23)

1. Printing couples (01; 02; 48; 49; 51; 52; 58; 59; 61; 62) of an offset rotary printing press with at least one forme cylinder (03; 04; 06; 07; 64), at least one transfer cylinder (08; 09, 11; 12; 63) and at least one inking unit (18; 19; 21; 22; 67) in each case, wherein two of the said printing couples (01; 02; 48; 49; 51; 52; 58; 59; 61; 62) are arranged opposite each other, and the printing couples (01; 02) are arranged so as to be variable with respect to their distance relative to each other transversely to the axes of rotation of the cylinders (03; 04; 06; 07; 08; 09, 11; 12; 63; 64), characterized in that the arrangement of the printing couples (01; 02; 48; 49; 51; 52; 58; 59; 61; 62) relative to one another is variable in an approximately axially parallel direction (32; 71) of the axes of rotation of the cylinders (03; 04; 06; 07; 08; 09, 11; 12; 63; 64).
2. Printing couples (48; 49; 51; 52; 58; 59; 61; 62) of an offset rotary printing press with at least one forme cylinder (03; 04; 06; 07; 64), at least one transfer cylinder (08; 09, 11; 12; 63) and at least one inking unit (18; 19; 21; 22; 67) in each case, wherein two of the said printing couples (48; 49; 51; 52; 58; 59; 61; 62) are arranged opposite each other, and two printing couples (48; 58, 49; 59, 51; 61, 52; 62) are constructed in each case in the so-called bridge design in the form of a bridge unit with two respective inking units (67), two respective forme cylinders (64) and two respective transfer cylinders (63), wherein the transfer cylinders (63) are orientated in opposite directions to each other, characterized in that the arrangement of at least one of the printing couples (58; 59; 61; 62) per bridge unit relative to the second printing couples (48; 49; 51; 52) is variable in the direction (32) of the axes of rotation of the cylinders (63; 64).
3. Printing couples according to Claim 2, characterized in that the printing couples (01; 02) are arranged so as to be variable with respect to their distance relative to each other.
4. Printing couples according to Claims 1 or 2, characterized in that one of the printing couples (01; 48; 49; 51; 52) is arranged so as to be stationary.
5. Printing couples according to Claims 1 or 2, characterized in that the two printing couples (01; 02, 48; 49; 51; 52, 58; 59; 61; 62) are arranged so as to be lockable in the operative state.
6. Printing couples according to one of Claims 1 or 2, characterized in that at least two pairs of the said printing couples (01; 02, 48; 49; 51; 52, 58; 59; 61; 62) are arranged one above the other.
7. Printing couples according to Claim 6, characterized in that at least one printing couple (01; 02) is fastened to a carrier apparatus.
8. Printing couples according to Claim 7, characterized in that the carrier apparatus has transverse carriers (28; 29) and vertical supports.
9. Printing couples according to Claim 7 or 8, characterized in that at least one printing couple (02) is arranged so as to be displaceable relative to the carrier apparatus.
10. Printing couples according to Claim 8, characterized in that a transverse carrier (28; 29) is arranged between the upper and lower printing couple (01; 02; 48; 49; 51; 52, 58; 59; 61; 62)
11. Printing couples according to Claim 1 or 2, characterized in that the mutually opposed printing couples (01; 02; 48; 49; 51; 52, 58; 59; 61; 62) are arranged in separable frame parts (55; 65), wherein the arrangement of the frame parts (55; 65) relative to each other is variable at least approximately in the axially parallel direction (71) of the axes of rotation of the cylinders (63; 64).
12. Printing couples according to Claim 11, characterized in that the two frame parts (55; 65) are capable of being moved to be at a horizontal distance.
13. Printing couples according to Claim 12, characterized in that one frame part (55) is arranged so as to be stationary and one frame part (65) is mounted so as to be displaceable relative to it.
14. Printing couples according to Claim 13, characterized in that the displaceable frame part (65) is mounted on rollers (53; 54) in a frame.
15. Printing couples according to Claim 12, characterized in that the two frame parts (55; 65) are arranged so as to be lockable in the operative state.
16. Printing couples according to Claim 1, characterized in that a printing couple (01; 02) comprises in each case two forme cylinders (03; 04, 06; 07), two transfer cylinders (08; 09, 11; 12) and one counter-impression cylinder (13; 14).
17. Printing couples according to Claim 16, characterized in that a V-type printing couple (01) and a W-type printing couple (02) are arranged opposite each other.
18. Printing couples according to Claim 17, characterized in that the V-type printing couple (01) is arranged so as to be stationary.
19. Printing couples according to any one of Claims 16 to 18, characterized in that the printing couples (01; 02) are capable of being coupled to each other.
20. Printing couples according to Claim 19, characterized in that the printing couples (01; 02) are arranged so as to print one or more strips of material both in the coupled and in the non-coupled state.
21. Printing couples according to any one of Claims 16 to 20, characterized in that four transfer cylinders (08; 09, 11; 12) are capable of being set on a single counter-impression cylinder (13).
22. Printing couples according to Claim 1, characterized in that two printing couples (48; 58, 49; 59, 51; 61, 52; 62) are constructed in each case in the so-called bridge design in the form of a bridge unit with two respective inking units (67), two respective forme cylinders (64) and two respective transfer cylinders (63), wherein the transfer cylinders (63) are orientated in opposite directions to each other.
23. Printing couples according to Claim 22, characterized in that at least two bridge units are arranged one above the other.

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