EP0771268B1 - Spray damper - Google Patents

Abstract

In a spray damper, spray nozzles are changed during operation without interrupting production in that there is at least one magazine capable of holding at least two spray nozzles in each spraying region which can be taken from a stand-by to an operating position.

Description

The invention relates to a device for moistening of objects, especially a dampening roller an offset rotary printing machine according to the Preamble of claim 1.

It is generally known in the offset printing process to use dampening units in addition to inking units, e.g. B. Nozzle dampening systems with side by side in the axial direction arranged spray nozzles for moistening the forme cylinder (see US 40 44 674 A). A disadvantage of such Nozzle systems is that due to wear or Pollution of the nozzle openings changes in the Geometry of the nozzle outlet openings can occur so that no quality-appropriate print image is achieved becomes. To remedy these shortcomings, the nozzles need to be be exchanged what machine downtime as well Loss of production.

The invention has for its object a Device for moistening a dampening roller To create rotary printing press by means of nozzles.

According to the invention, this object is achieved by the features of the characterizing part of claim 1 solved.

The advantages of the invention are in particular that immediately if the print image deteriorates a change of the spray nozzles can be made without that there is a loss of production. The The device according to the invention is also for spraying objects other than those mentioned in the description Suitable with dampening solution or paint and can be used anywhere be used where spray nozzles can clog.

Fig. 1

eine schematische Darstellung eines Querschnittes durch eine erfindungsgemäße Einrichtung,

Fig. 2

eine Ansicht A nach Fig. 1, jedoch ohne Gehäusevorderteil, und ohne Feuchtreibewalze,

Fig. 3

eine Seitenansicht einer anderen Anordnung der Welle der Magazine,

Fig. 4

eine Draufsicht nach Fig. 3,

Fig. 5

eine schematische Ansicht der Darstellung eines zweiten Ausführungsbeispiels einer erfindungsgemäßen Einrichtung, jedoch ohne Gehäuse,

Fig. 6

eine schematische Schnittdarstellung eines dritten Ausführungsbeispiels einer erfindungsgemäßen Einrichtung, jedoch ohne Gehäuse,

Fig. 7

eine Darstellung nach Fig. 6, jedoch mit einer ausgewechselten Sprühdüse,

Fig. 8

einen Teilschnitt VIII - VIII nach Fig. 6 in vergrößerter Darstellung,

Fig. 9

einen Schnitt IX - IX nach Fig. 6 in vergrößerter Darstellung,

Fig. 10

einen Schnitt X - X nach Fig. 9,

Fig. 11

eine schematische Darstellung eines Querschnittes einer erfindungsgemäßen Einrichtung mit einem verdrehbaren Düsenmagazin mit einer speziellen Feuchtmittelzuleitung in einem vierten Ausführungsbeispiel,

Fig. 12

eine schematische Darstellung eines Längsschnittes einer erfindungsgemäßen Einrichtung mit einem verschiebbaren Düsenmagazin mit einer speziellen Feuchtmittelzuleitung in einem fünften Ausführungsbeispiel.

The invention is explained in more detail below using several exemplary embodiments. The associated drawings show in

Fig. 1

2 shows a schematic representation of a cross section through a device according to the invention,

Fig. 2

1, but without the front part of the housing and without the dampening roller,

Fig. 3

a side view of another arrangement of the shaft of the magazine,

Fig. 4

3,

Fig. 5

2 shows a schematic view of a second exemplary embodiment of a device according to the invention, but without a housing,

Fig. 6

2 shows a schematic sectional illustration of a third exemplary embodiment of a device according to the invention, but without a housing,

Fig. 7

6, but with a replaced spray nozzle,

Fig. 8

6 shows a partial section VIII - VIII according to FIG. 6 in an enlarged view,

Fig. 9

6 shows a section IX - IX according to FIG. 6 in an enlarged view,

Fig. 10

9 shows a section X - X according to FIG. 9,

Fig. 11

1 shows a schematic representation of a cross section of a device according to the invention with a rotatable nozzle magazine with a special dampening agent feed line in a fourth exemplary embodiment,

Fig. 12

is a schematic representation of a longitudinal section of a device according to the invention with a displaceable nozzle magazine with a special dampening agent supply line in a fifth embodiment.

In a side frame 1; 2, a shaft 3 is rotatable stored and over a shaft end 4 with a Not shown drive, e.g. B. a lever for manual operation or with a known electric motor drive connected. On wave 3 are positively two or more carriers 6, 7, z. B. in the form of rectangular, perpendicular to shaft 3 and on the shaft 3 fixed plates arranged, which several z. B. four over an entire humidification width b a dampening solution roller 8 is in axially parallel Direction to dampening roller 8 extending, in total magazines designated with 9 and 11 for spray nozzles record (in Fig. 2, however, only two magazines 9, 11th shown). Each magazine 9, 11 has at the ends of the Carrier 6, 7 fixed nozzle fastening elements or nozzle carrier 12, 13, 14, 15, in which in turn Spray nozzles 17, 18, 19, 20 are attached. The spray nozzles 17 to 20 are arranged on the carriers 6, 7 that in each case the lower spray nozzle 18, 20 on the outer surface the dampening roller 8 is directed (work or Spray position D). Are the magazines 9, 11 about their common shaft 3 in the counterclockwise direction (Fig. 1) 180 ° about its axis of rotation 95 in the working position D rotated from a maintenance or reserve position E, see above the spray nozzles 17, 19 are used or are these aimed at the outer surface of the dampening roller 8, in the same place as before Spray nozzles 18, 20. At least at one end of the carrier 7 a strip-shaped flag 22 is attached, which with is connected to a housing-fixed sensor 23. Everyone Nozzle carrier 12 to 15 is via a dampening solution supply, e.g. B. in the form of a flexible hose 24, 26, 27, 28th and one directional control valve 29, 31 each with one central dampening line 32, 33 (Fountain solution source) connected. It is also possible, each nozzle holder 12 to 15 alternatively via others Directional control valves 39, 40 each with a central line 41, 44 for cleaning liquid (also as Called dampening solution source) to connect in If necessary, to be able to clean the spray nozzles 17 to 20 (Fig. 2).

Another way of cleaning the spray nozzles 17 up to 20 consists of the d. H. those facing away from the dampening solution roller 8 Spray nozzles 17, 19 (Fig. 1; 2) each to one Nozzle cleaning device, not shown to make these spray nozzles 17, 19 with a Spray cleaning liquid and at the same time e.g. B. mechanically with a rotating bristle head clean. The nozzle cleaning device mentioned can pivotable on a side frame fixed shaft and if necessary in the axis-parallel direction to the dampening solution roller 8 be movably arranged, the housing 37 compared to that shown in Fig. 1 enlarged can be executed. It is also possible to use the magazines 9, 11 for the spray nozzles to turn clockwise.

The sensor 23 signals in connection with one of the Flags 22; 21 a rotary movement of the magazines 9, 11 and causes via the directional valves 29, 31, which are electrically can be operated, switching on and off or switching of the dampening solution from the spray nozzles 18, 20 to the Spray nozzles 17, 19. The magazines 9, 11 of the Spray dampers are surrounded by a housing 37, which is open in the direction of the dampening solution roller 8 and on the opposite side for operational purposes has an upwardly pivotable flap 38. The Housing 37 has one at a low point Return 42 to return the not to the Fountain solution roller 8 applied dampening solution. The The dampening solution roller 8 is not shown Fountain roller and a non-shown Form cylinder in connection. So everyone is for him Pressure or dampening process required spray nozzle multiple, but at least twice, so that in In the event of a failure of one previously in operation located spray nozzle 18, 20 due to a rotational movement of the magazine 9, 11 a new, ready for use Reserve spray nozzle 17, 19 is used.

It is also possible to use the shaft 3 for each magazine 9, 11 to be driven separately.

It is also possible to arrange a shaft 30 vertically, d. H. in the y direction of a right angle Coordinate system and the magazine 9 or 11 then in to turn a corresponding working position D (Fig. 3 and 4). Several shafts 30 must be used come, which are rotated by known drives and by means of sensors not shown in their current position can be scanned. On the Representation of hoses for dampening solution supply as well as a housing was dispensed with. It is on the Description of Figs. 1 and 2 referenced.

It is also possible to have one or more shafts 30 in z-direction of a right-angled coordinate system as well to be arranged at right angles to the dampening solution roller 8 and the Magazines 9, 11 then turn analog (not shown).

In a second embodiment, one The device according to the invention is in a side frame 1, 2 in the direction parallel to the dampening roller (longitudinal axis 80) reciprocating nozzle bar or one Nozzle carrier 43 for receiving side by side arranged nozzle carriers 46, 47, 48, 49 provided. The Nozzle carriers 46 to 49 are spray nozzles 51, 52, 53, 54 assigned, which at least in pairs are arranged side by side. It can ever Moistening width b of the dampening roller 8 also four or eight pairs of spray nozzles (or any number of pairs of spray nozzles). One each Pair of spray nozzles 51, 52; 53, 54 forms a magazine 56; 57. Each magazine is one Spray area assigned. A spray area is one Area on the fountain solution roller 8, which are sprayed should. The nozzle carriers 46 to 49 are each flexible Hoses 58, 59, 61, 62 for the supply of dampening solution assigned, with the supply analogous to the representation in 2 per magazine 56, 57 via directional valves 29, 31 can be done. A back and forth movement of the Nozzle carrier 43 in the axial direction C can be by means of a known rack and pinion drive or double-acting cylinder-piston unit 63, which between the side frame 1 and one on the Nozzle carrier 43, cohesively located tab 64 is arranged to take place. One over the nozzle holder 43 located on the frame fixed sensor 66 recognizes on the ground markings on the nozzle carrier 43, which of the spray nozzles 51 to 54 with dampening solution must be applied. According to the illustration in Fig. 3 are currently the spray nozzle 51 of the Magazine 56 and the spray nozzle 53 of the magazine 57 in a working position D, while the spray nozzles 52, 54 are in a reserve position E. Through a Stroke of the nozzle carrier 43 in the direction of the left Side frame 1, the spray nozzles 52, 54 come to Commitment. The stroke can also be alternatively handle 67 shown take place (Fig. 5). The spray nozzles 51 each in working position D, 53 have their spray on those not shown in FIG. 5 shown fountain solution roller 8 directed. On the Representation of a housing was also made here waived.

It is also possible to divide the nozzle carrier 43 to be stored separately in side frame 1, 2 and per magazine 56; 57 to be moved separately.

In a third exemplary embodiment (FIGS. 6 to 10) a device according to the invention exists in each case fixed on the side frame, e.g. B. on a not shown Traverse arranged magazine 68 from a vertical extending feed 69 with a feed shaft 70 for cleaned spray nozzles 71, 72, 73. The vertical running feed chute 70 opens into one underneath in the horizontal direction Service shaft 74, in which is under the last Spray nozzle 73 a further cleaned spray nozzle 76 in Reserve position E is located (Fig. 6). The spray nozzles 71, 72, 73, 76 lying one above the other due to their gravitational pull down, they with their side edges 76, 77 in the feed shaft 70 in the correct downward direction towards service shaft 74 out, so that flat jet nozzles are used and can be exchanged in the correct position. In case of noted reductions in print quality, which with are related to the dampening solution management in the operating state or in working position D. defective spray nozzle 79 sorted out (Fig. 7). This happens by means of a drive 81 Gate valve 82 is pulled up, so that now a Connection between the first end of the Operating shaft 74 and a now open Discharge shaft 83 is made. Below is by means of a drive 84 Positioning piston 86 (also as a positioning device 86)), which extends from the second end of the Service shaft 74 in the direction of the gate valve 82 moved along an axis 100, the defective spray nozzle 79th pushed into the chute 83 in the ejection position F, where it falls into a container 87 in free fall, which may be filled with a cleaning liquid 88 can be, in which case on the side wall of the Container 87 for intensive cleaning of the spray nozzles an ultrasound transmitter 90 may be attached. Now the gate valve 82 closes Positioning piston 86 pushes the cleaned and in lowest position on the level of the operating shaft 74 located spray nozzle 76 so far in the direction of first end of the service shaft 74 until the spray nozzle 76 strikes the gate valve 82, d. H. yourself in Working position D is (Fig. 7). The Spray nozzle 76, as well as all other spray nozzles 79, 71, 72, 73 also on its back a guide 89, z. Legs Dovetail guide, which in one in the rear long side of service shaft 74 located groove 91 with dovetail-shaped Cross section is performed. Changing the spray nozzle 76 is done like this: instead of the defective spray nozzle 79, a in the rear long side 91 of the service shaft 74 arranged dampening solution supply or Fountain solution 92 using a presence a spray nozzle 79, 76 detecting sensor 93 in Connection with a solenoid valve, not shown switched off, so that when changing Dampening solution emerges from the fountain solution source 92. The Drives 81, 84 can be made from known drive elements exist for a reciprocating movement. It can preferably several magazines 68 side by side over the entire humidification width b Fountain solution roller 8 may be arranged. So sprays in each case in the working position D. Spray nozzle 76 or 79 in the direction of the dampening solution roller 8. A housing was not shown. 9 is a Antechamber 75 of a working position D. Spray nozzle 79 representative of all other spray nozzles shown.

In a fourth embodiment, one device according to the invention (Fig. 11) is in itself dampening roller parallel to the direction side frame fixed dampening agent supply 94 in the form of a Tube provided with a rotation axis 85. On the Tube 94 are over the entire humidification width b spaced apart magazines 96 for receiving Spray nozzles 97, 98 rotatable about an axis of rotation 85 arranged by a nozzle carrier 99, z. B. in the form a tubular sleeve 99 formed on its outer Scope of each of the spray nozzles 97, 98 diametrically arranged opposite one another. For example, the Spray nozzles 97, 98 at their end remote from the nozzle outlet a threaded nipple 101, 102, which positively in a threaded bore of the sleeve 99 intervenes. The tube 94 has a spray direction the dampening roller 8 directional bore or Recess 103, which in the working position D with the bore of the threaded nipple 102 a passage for forms the dampening solution to be applied. Here is the diametrically opposite reserve spray nozzle 97 against the dampening agent supply pipe 94 sealed. It is also possible with a correspondingly large Dampening roller 8 or another large Spray the sleeve 99 so on the tube 94 twist that the passage between threaded nipple 102 and the recess 103 becomes smaller in cross section. The Sleeve 99 is not shown on its circumference Provide teeth, which with a toothed belt 104 one fixed to the frame, e.g. B. from the machine station operable gear motor unit 106 rotatable connected is. However, it is also possible to use the sleeve 99 to twist manually. The sleeve-shaped nozzle carrier 99 is on the tubular fountain solution 94 through known sealants, e.g. B. O-rings not shown sealed against leaking dampening solution. Consequently are all on the fountain solution supply pipe 94 arranged magazines 96 centrally with dampening solution provided. The pipe or the dampening solution supply is included a symbolically represented fountain solution source 115 connected.

In a fifth embodiment, one device according to the invention (Fig. 12) is again one in the direction parallel to the dampening roller extending side frame fixed dampening water supply 107 provided in the form of a tube. On the pipe 107 are mutually over the entire humidification width b spaced magazines 108 for receiving spray nozzles 109, 111 arranged. The spray nozzles 109, 111 are in Axis-parallel direction to the dampening solution supply line 107 arranged one behind the other and spaced from each other with a tubular, sleeve-like nozzle carrier 112 connected and consequently also to the nozzle carrier 112 screwed, as in the previous embodiment spelled out. The nozzle holder 112 is on the Dampening supply line 107 in its axial direction (Axis of rotation 105) by means of a double-acting pneumatic cylinder-piston unit 113 back and forth moveable, d. H. slidably arranged so that either one of the two spray nozzles 109, 111 from one Reserve position E coming with a working position D on the dampening roller 8 bore or Recess 114 of the dampening solution supply line 107 in Connection is coming. The recess 114 forms with a the spray nozzles 109 an outlet for the to be dispensed Fountain solution while the reserve spray nozzle 111 against the dampening agent supply pipe 107 is sealed. Of the sleeve-shaped nozzle carrier 112 and the Dampening solution supply are so known sealing elements sealed against each other that no dampening solution can leak. The cylinder-piston unit is 113 on the one hand, fixed on the side frame and on the other hand by means of a tab 116 with the nozzle carrier 112 articulated. A stroke length of Cylinder-piston unit 113 corresponds to the distance between the two Spray nozzles 109, 111 on the nozzle carrier 112. Die Cylinder-piston unit 113 is e.g. B. from Machine control center can be operated from. Through the parachute Arrangement of the spray nozzles and their in axially parallel Direction to the fountain solution roller Sliding movement of the nozzle magazines 108 is on Space requirement for this device according to the invention particularly low. With this compact design of the Spray dampening systems are easy to handle.

The device according to the invention is also for spraying of objects other than those in the preceding Description mentioned fountain solution roller 8 suitable. So can spray nozzles with the device mentioned anywhere be replaced where spray nozzles during the Can clog use, e.g. B. when spraying Fountain solution or ink. That goes without saying also when changing the spray pattern due to a Wear of the spray nozzle.

Located between each spray nozzle and each nozzle holder one that is not designated in more detail except for FIG. 9 Antechamber. Likewise, each nozzle has a housing with which it is releasably connected. Regarding the Construction of nozzles, in particular flat jet nozzles to a catalog from Lechler GmbH + Co. KG Postfach 1709, D - 70707 Fellbach, "The whole world of Nozzle technology ", catalog 10.92, edition 921.

It goes without saying that the spray nozzles that after use from a working position D from the Magazines are removed, then again by new or regenerated spray nozzles to be replaced.

It is also possible to use the magazines 9; 11 (FIGS. 1 and 2) with one, as in connection with 11 described central dampening solution supply 115 to train for magazine 96. The shaft 3 is there hollow and with a spray medium, e.g. B. aqueous Fountain solution supplying fountain solution source 32 or 33 connected. In an advantageous manner, the previously separately to the spray nozzles 17 to 20 Hoses 24 and 26 to 28. For this, the hollow shaft is given 3 per magazine 9; 11 not one in the radial direction shown recess through which the spray medium can step through. Magazines 9; 11 are by means of Poor 6; 7 rotatably arranged on the hollow shaft 3. In the arms 6; 7 are each not shown Contain holes, which each in the Spray nozzles 18; 20 with the recess in the hollow shaft 3 for the purpose Feeding the spray medium, e.g. B. fountain solution connect. The ones in reserve position E. Reserve spray nozzles, e.g. B. 97; 111 then have none Contact to the one in the hollow shaft 3 Recesses. The recesses of the hollow shaft 3 are towards the ends near the shaft in the arms located holes with known means so sealed that the spray medium only by the in Working position D spray nozzles 18; 20th exit.

The essence of the invention is therefore according to the previous description in that the in a working position D defective Working spray nozzles, e.g. B. 98; 109 at any time by in a reserve position E "waiting" new "stocked" Reserve spray nozzles, e.g. B. 97; 111 can be replaced. One reason to replace a spray nozzle, e.g. B. 98; 109 may consist in that if the Print quality in the area of a "working" spray nozzle Irregularities in the fountain solution supply be determined. Feeding the Reserve spray nozzles, e.g. B. 97; 111 from the Reserve position E in working position D and vice versa can on an arc around the axis of rotation 30; 85; 95 or along a surface parallel to the dampening surface extending axis 80; 100; 105 slidably done.

This can be done automatically as well as from Machine control center controlled or done by hand. The machine running speed does not have to can be reduced. It arises in an advantageous manner no noteworthy waste.

But it is also possible in an advantageous manner Reserve position E spray nozzles, z. B. 97; 111 with other technical features such as B. one another nozzle cross-section or with a different one Stock spray image. So it could be technical different nozzles in a magazine, the depending on the intended use then in a working position D be spent, e.g. B. the nozzles 97; 111 as Detergent nozzles for cleaning the dampening solution roller 8 be used.

Parts list

1

Side frame

2nd

Side frame

3rd

wave

4th

Shaft end

5

-

6

carrier (3)

7

Straps (3)

8th

Fountain solution roller

9

Magazine for spray nozzles

10th

-

11

magazine for spray nozzles

12th

Nozzle holder (17)

13

Nozzle holder (18)

14

Nozzle holder (19)

15

Nozzle holder (20)

16

-

17th

Spray nozzle (12)

18th

Spray nozzle (13)

19th

Spray nozzle (14)

20th

Spray nozzle (15)

21

Flag (7)

22

Flag (7)

23

sensor

24th

Hose (12)

25th

-

26

tube (13)

27

Hose (14)

28

Hose (15)

29

Directional control valve (17, 18)

30th

wave

31

Directional control valve (19, 20)

32

Dampening solution line (18, 17)

33

Fountain solution line (20, 19)

34

Drive (9)

35

-

36

drive (11)

37

casing

38

Flap (37)

39

Directional control valve (17, 18)

40

Directional control valve (19, 20)

41

Pipe, cleaning fluid (17, 18)

42

Return (37)

43

Nozzle holder

44

Pipe, cleaning fluid (19, 20)

45

-

46

Nozzle holder (51)

47

Nozzle holder (52)

48

Nozzle holder (53)

49

Nozzle holder (54)

50

-

51

Spray nozzle (46)

52

Spray nozzle (47)

53

Spray nozzle (48)

54

Spray nozzle (49)

55

-

56

magazine (51, 52)

57

Magazine (53, 54)

58

Hose (46)

59

Hose (47)

60

-

61

tube (48)

62

Hose (49)

63

Cylinder-piston unit

64

Tab (43)

65

-

66

sensor

67

Handle (43)

68

Nozzle magazine

69

Feeder (68)

70

Inlet chute (68)

71

Spray nozzle (68)

72

Spray nozzle (68)

73

Spray nozzle (68)

74

Company shaft (68)

75

Antechamber (79)

76

Spray nozzle (68)

77

Side edge (79)

78

Side edge (79)

79

Spray nozzle, defective

80

Longitudinal axis (43)

81

Drive (82)

82

Gate valve

83

Discharge chute

84

Drive (86)

85

Rotation axis (94)

86

Positioning piston

87

container

88

Cleaning fluid

89

guide

90

Ultrasonic transmitter 91 slot (74)

92

Fountain solution source (68)

93

sensor

94

Fountain solution supply, pipe

95

Axle (3)

96

Magazine (97, 98)

97

Spray nozzle

98

Spray nozzle

99

Nozzle holder, sleeve (97, 98)

100

Axle (74)

101

Threaded nipple (97)

102

Threaded nipple (98)

103

Notch (94)

104

Timing belt

105

Rotation axis (107)

106

Gear motor unit

107

Fountain solution supply, pipe

108

Magazine (109; 111)

109

Spray nozzle

110

-

111

Spray nozzle

112

Nozzle holder, sleeve (109, 111)

113

Cylinder-piston unit

114

Recess

115

Fountain solution source (96; 108)

116

Tab

A

view

C.

Direction of movement (43)

D

Working position (56; 57; 9; 11)

E

Reserve position (56; 57; 9; 11)

b

Humidification width

y

Direction (3)

e.g.

Direction (3)

Claims (20)

1. A devise for dampening a dampening roller (8) of a rotary printing machine with a spraying medium by means of a plurality of spray nozzles (17; 19) arranged next to one another in a spray dampening unit (14, 19, 27; 8), a spraying region and a working position (D) being associated with each spray nozzle (17; 19), characterized in that a respective magazine (9, 11; 51, 52; 48, 49; 68; 96; 108) for receiving at least two spray nozzles (17, 18; 19, 20; 51, 52; 53, 54; 79, 76; 73, 72, 71; 97, 98; 109; 111) is provided for each spraying region, and in that optionally each spray nozzle (17, 18; 19, 20; 51, 52; 53, 54; 79, 76; 73, 72, 71; 97, 98; 109, 111) of the magazine (9, 11; 51, 52; 48, 49; 68; 96; 108) is arranged such that it may be brought from a reserve position (E) which is not in communication with the spraying medium into the working position (D) and vice versa.
2. A device according to Claim 1, characterized in that the magazine (9, 11; 96) is arranged such that it may be rotated in each case about an axis of rotation (30; 85; 95) running parallel to a surface (8) to be dampened.
3. A device according to Claim 1, characterized in that the magazine (56, 57; 108) is arranged such that it may be displaced from the reserve position (E) into the working position (D), in each case along an axis (80; 100; 105) running parallel to a surface to be dampened.
4. A device according to Claims 1 and 2, characterized in that each magazine (99) is rotatably arranged on a tube (94) arranged secured to the side frame.
5. A device according to Claims 1 and 3, characterized in that each magazine (112) is displaceably arranged on a tube (107) arranged secured to the side frame.
6. A device according to Claims 1 and 2, characterized in that each magazine (9; 11) is pivotally arranged on a common shaft (3) arranged secured to the side frame.
7. A device according to Claims 1 and 2, characterized in that each magazine (9; 11) is pivotally arranged on a separate shaft (30) arranged secured to the side frame.
8. A device according to Claims 1 and 3, characterized in that each magazine (56; 57) is arranged on a nozzle support (43) which is mounted secured to the side frame and is axially displaceable.
9. A device according to Claim 1, characterized in that each spray nozzle (71; 72; 73; 76) of a magazine (70) is arranged such that it may be displaced from a reserve position (E) into a working position (D) by means of a positioning device (86).
10. A device according to Claims 1 and 9, characterized in that the spray nozzle (79) located in the working position (D) is arranged such that it may be displaced into a discard position (F) by means of the positioning device (86).
11. A device according to Claims 1, 9 and 10, characterized in that each spray nozzle (71; 72; 73; 76; 79) has on its dampening-agent supply side a housing with a guide means (89), in that the guide means (89) may be moved with form fit and in the axial direction with respect to the dampening roller (8) in a groove (91) in the positioning device (86), and in that the spray nozzle (76) located in the working position (D) is in form-fitting communication with a dampening-agent source (92) by way of its housing and the guide means (86).
12. A device according to Claims 1 to 4, characterized in that the tube (94; 107) is in communication with a dampening-agent source (115), and in that those spray nozzles (98; 109) of each magazine (99; 112) which are located in the working position (D) is [sic] in communication with the dampening-agent source (115) in each case by way of a cutout (103; 114) located in the tube (94; 107).
13. A device according to Claims 6 to 8, characterized in that each spray nozzle (17 to 20; 51 to 54) is connected to a separate hose (24, 26 to 28; 58, 59, 61, 62) for a dampening-agent source (32; 33; 41; 44; 58; 59; 61; 62) by way of its pre-chamber.
14. A device according to Claims 1 to 7 and 12, characterized in that the spray nozzles (97, 98; 108, 109; 17 to 20) is [sic] arranged such that they may coincide with a cutout (103; 114) in the dampening-agent supply means (94; 107; 3) which may be connected to a common dampening-agent source (115; 32; 33).
15. A device according to Claims 1 to 14, characterized in that all the spray nozzles (17, 18; 19, 20; 51, 52; 53, 54; 79, 76; 73, 72, 71; 97, 98; 109, 111) are arranged such that they may be connected to a common dampening-agent source.
16. A device according to Claims 1 to 15, characterized in that a device for cleaning the spray nozzles (17, 19; 18, 20) is provided.
17. A device according to Claims 1 to 16, characterized in that at least one movable brush head is provided as the nozzle-cleaning device.
18. A device according to Claims 1 to 17, characterized in that the nozzle-cleaning device for each spray nozzle (17, 19; 18, 20) has a movable brush head.
19. A device according to Claims 1 to 18, characterized in that the brush head is arranged to be rotatable.
20. A device according to Claims 1 to 19, characterized in that the nozzle-cleaning device is arranged to be movable.

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