EP0946370B1 - Cylinder for rotary press - Google Patents

Abstract

The invention relates to a rotary press which, in a first operating mode, is divided into many sections. In a second operating mode, this cylinder has a functionally continuous surface area.

Description

The invention relates to a roller for a Rotary printing machine, a method of division a roller and a method for producing a Roller according to the preamble of claims 1, 16 and 21.

DE-PS 875 205 describes a roller with a plurality of sleeve-like individual rollers which are spaced apart on a common shaft.
The disadvantage of this roller is that these individual rollers cannot form an uninterrupted lateral surface.

DE 27 45 086 A1 describes an inking unit roller Management of different colors in side by side Areas whose bales have circumferential separating grooves. These separation grooves can be done with a flexible band fill out.

The invention has for its object a roller create.

This object is achieved by the features of claims 1, 16 and 21 solved.

The advantages that can be achieved with the invention exist especially in that a bale of a roller in Sections can be subdivided. So it is for example possible to roll the roller on a plurality of to adapt panels that are spaced apart from one another, without having to change rollers. Accumulations of color on the roller in the area of the space between the plates are avoided. This reduces pressure disturbances and increases the print quality.

If the subdivision is constricted by a achieved continuous outer surface, this covers the Sealing tools for creating this constriction from, so that, for example, no printing ink in the interior the roller can penetrate.

The rollers are remotely switchable. H. for example, too adjustable while the machine is running.

The roller according to the invention for a Rotary printing machine is shown in the drawing and is described in more detail below.

Fig. 1 bis 4

schematische Darstellungen einer Walze in verschiedenen Betriebsstellungen;

Fig. 5

einen schematischen Längsschnitt durch ein erstes Ausführungsbeispiel einer Walze;

Fig. 6

einen schematischen Querschnitt durch eine Walze gemäß Fig. 5;

Fig. 7

einen schematischen Längsschnitt durch ein zweites Ausführungsbeispiel einer Walze;

Fig. 8

einen schematischen Querschnitt durch eine Walze gemäß Fig. 7;

Fig. 9

einen schematischen Längsschnitt durch ein drittes Ausführungsbeispiel einer Walze;

Fig. 10

einen schematischen Längsschnitt durch ein viertes Ausführungsbeispiel einer Walze nach der Beschichtung;

Fig. 11

einen schematischen Längsschnitt durch ein viertes Ausführungsbeispiel einer Walze im gestauchten Zustand gemäß Fig. 10;

Fig. 12

einen schematischen Längsschnitt durch ein viertes Ausführungsbeispiel einer Walze im entspannten Zustand mit einer Einschnürung gemäß Fig. 10;

Fig. 13

einen schematischen Ausschnitt eines fünften Ausführungsbeispiels einer Walze in gestauchtem Zustand;

Fig. 14

einen schematischen Ausschnitt einer Walze gemäß Fig. 13 im entspannten Zustand;

Fig. 15

einen schematischen Ausschnitt eines sechsten Ausführungsbeispiels einer Walze im entspannten Zustand;

Fig. 16

ein schematischer Ausschnitt einer Walze gemäß Fig. 15 im gestreckten Zustand;

Fig. 17

einen schematischen Ausschnitt eines siebten Ausführungsbeispiels im gestauchten Zustand;

Fig. 18

einen schematischen Ausschnitt einer Walze gemäß Fig. 17 im entspannten Zustand;

Fig. 19

einen schematischen Ausschnitt eines achten Ausführungsbeispiels einer Walze in gewölbtem Zustand;

Fig. 20

ein schematischer Ausschnitt einer Walze gemäß Fig. 19 mit Einschnürung.

Show it

1 to 4

schematic representations of a roller in different operating positions;

Fig. 5

a schematic longitudinal section through a first embodiment of a roller;

Fig. 6

a schematic cross section through a roller according to FIG. 5;

Fig. 7

a schematic longitudinal section through a second embodiment of a roller;

Fig. 8

a schematic cross section through a roller according to FIG. 7;

Fig. 9

a schematic longitudinal section through a third embodiment of a roller;

Fig. 10

a schematic longitudinal section through a fourth embodiment of a roller after coating;

Fig. 11

a schematic longitudinal section through a fourth embodiment of a roller in the compressed state according to FIG. 10;

Fig. 12

a schematic longitudinal section through a fourth embodiment of a roller in the relaxed state with a constriction according to FIG. 10;

Fig. 13

a schematic section of a fifth embodiment of a roller in the compressed state;

Fig. 14

a schematic section of a roller according to FIG 13 in the relaxed state.

Fig. 15

a schematic section of a sixth embodiment of a roller in the relaxed state;

Fig. 16

a schematic section of a roller according to FIG 15 in the stretched state.

Fig. 17

a schematic section of a seventh embodiment in the compressed state;

Fig. 18

a schematic section of a roller according to FIG 17 in the relaxed state.

Fig. 19

a schematic section of an eighth embodiment of a roller in the curved state;

Fig. 20

a schematic section of a roller according to FIG. 19 with constriction.

A roller 1 essentially has two pins 3, 4 and one bale 6 each. The pins 3, 4 are fixed, for example with respect to side frames, not shown, and the bale 6 is rotatably mounted on the pins 3, 4. In the present exemplary embodiments, a circumferential surface 8 of the bale 6 is provided with a circumferential groove 11 in its center, so that the roller 1 is approximately axially symmetrical to a center line 12 of this groove 11. This roller 1 is preferably an inking or dampening roller of a rotary printing press that interacts with a plate cylinder.
The bale 6 of this roller 1 is equipped with a z. B. rubber-elastic cover 13, z. B. rubber or an elastomer. The plate cylinder is - seen in the axial direction - provided with a plurality of plates lying side by side. For example, this plate cylinder can be optionally equipped with two "half-width" or with one "half-width" and two "quarter-width" or with four "quarter-width" plates.
The roller 1 can be adapted in accordance with a selected assignment of the plate cylinder, ie the outer surface 8 of the bale 6 can be subdivided into individual sections 14, 16, 17, 18 with preferably the same, unchangeable diameter.
The bale 6 of the roller 1 thus has a selectable number of cylindrical sections 14, 16, 17, 18 in the axial direction, the length 214, 216, 217, 218 of which is adapted to the width of an assigned plate.
Fig. 1 shows the roller 1, which is divided into two halves 24, 26 by the groove 11, in a starting position.

Fig. 2 shows the roller 1, the left half 26 of the Bale 6 has two sections 17, 18 in one second position.

3, the roller 1 is in a third position, the right half 24 of the bale 6 in two Sections 14, 16 is divided.

In the fourth position of the roller 1 of FIG. 4, the right 24 and left half 26 of bale 6 each divided into two sections 14, 16 and 17, 18.

Instead of the subdivision shown, there is also a different number and arrangement (e.g. asymmetrical) of Sections 14, 16, 17, 18 possible.

The following descriptions will simplify only one half 26 of the roller 1 described and shown. Relative to an axis of rotation of the roller 1 in each case a figure in the upper part of the roller 1 in unactuated starting position d. H. with undivided Bale 6 and in the lower part the roller 1 in actuated Condition, d. H. shown with divided bale 6.

In the case of the divisible roller 1, the bale is shown in FIG 6 provided with an uninterrupted lateral surface 29. A constriction 31 becomes a subdivision this bale 6 in two sections 17, 18 by an im Adjusting means lying inside the roller 1 are reversible generated. By means of these switchable actuators on an inside 32 of the cover 13 radially inwards pulling forces generated.

In a first embodiment (Fig. 5, Fig. 6) the Roller 1 is a pin 4 in the radial direction with a Through hole 34 provided. This through hole 34 is used to fasten the pin 4 by means of a Threaded screw on a roller bearing, for example on a side frame. In the axial direction, the Pin 4 a central blind hole 36, the open End in a chamber 37 inside the roller 1 opens. At the opposite end of this blind hole 36 is in radial direction into the blind hole 36 Connection 38 for supplying pressure medium, for example Compressed air, provided. On the pin 4 is a socket 39 rotatably supported by a roller bearing 41. This Bushing 39 has a flange 42, the front with a first section 43 of a support tube 44 for the cover 13 of the roller 1 by means of threaded screws 46 connected is. This first section 43 is by means of a connecting piece 47 on a second section 48 of the support tube 44 attached spaced. This is in a disk 49 is welded into the second section 48, the axially extending, arranged on a pitch circle Has threaded holes. On this disc 49 it is Connection piece 47 by means of threaded screws 51 screwed on. In addition, this disc 49 with one centrally arranged slide bearing 52 provided.

A circumferential groove 54 is introduced into the connecting piece 47 having an inner bore 53. This groove 54 and the inner bore 53 are connected by means of radially arranged bores 56. In each of these bores 56, a plunger 57 is radially displaceably mounted. At its inwardly facing end, each plunger 57 is provided with a locking ring 58. Between this retaining ring 58 and a wall of the inner bore 53, plate springs 59 are arranged on each tappet 57, so that a force acts inwards on the tappet 57 as a result of the plate springs 59. A segment 61 of a support ring 62 is firmly attached to an outer end of the plunger 57. A height h61 of a segment 61 is less than a depth t54 of the groove 54 in the support tube 44 and connecting piece 47. The cover 13 of the roller 1 is fastened to these segments 61, for. B. vulcanized or glued.
In the retracted state of the plunger 57, the segments 61 lie next to one another and in the base of the groove 54 without a gap. A diameter d63 of outer surfaces 63 of the segments 61 of the support ring 62 is therefore smaller than an outer diameter d44 of the support tube 44 when the tappets 57 are retracted. A constriction 31 is thus formed in the cover 13 in the region of these segments 61 when the tappets 57 are retracted.
When the plunger 57 is extended, the diameter d63 ′ formed by the outer surfaces 63 of the segments 61 is equal to the outer diameter d44 of the support tube 44.

A piston rod 64 is provided for actuating the tappets 57 and has, for example, a cone 66 rising to the left in the area of the tappets 57. This cone 66 connects an area of the piston rod 64 with a first, small diameter d64min. with an area of the piston rod 64 with a second, large diameter d64max. The plungers 57 are pressed radially outward by axially displacing the piston rod 64 in the direction of the center of the roller 1.
A first end of the piston rod 64 is supported in the slide bearing 52 of the disk 49. A disk 67 serving as a piston is screwed onto a second end of the piston rod 64. A compression spring 68 is pushed onto the piston rod 64 between this disk 67 and a flange 69. The flange 69 is provided with a shoulder which extends into the inner bore of the bushing 39 on a side facing away from the pin 4. The flange 69 is screwed to an end face of the bush 39 by means of threaded screws 71. The compression spring 68 is thus supported between the flange 69 and the disk 67 and generates a force acting on the piston rod 64 in the direction of the pin 4.
A seal 72 is arranged in a shoulder in front of the roller bearing 41 on a side of the inner bore of the bushing 39 facing the pin 4. This seal 72 seals the fixed pin 4 on the end face to the rotating bush 39. The inner bore of the bushing 39 thus forms the chamber 37, which can optionally be pressurized with pressure medium and actuates the piston rod 64.
If pressure is now applied to the chamber 37, the piston rod 64 moves axially in the direction of the center of the roller and the tappets 57 reach the small diameter d64min. to the large diameter d64max. As a result, the constriction 31 of the cover 13 is removed and there is a continuous outer surface 8.
If the chamber 37 is depressurized, the compression spring 68 presses the piston rod 64 in the direction of the pin 4 and the plunger 57 reach the large diameter d64max. to the small diameter d64min. The plunger 57 and thus the segments 61 pull the cover 13 radially inward, as a result of which the constriction 31 of the cover 13 is achieved.
It is of course also possible to reverse the switching states, ie the constriction 31 occurs when pressure medium is applied.
The operation of the roller 1 takes place, for. B. pneumatic.

In a second exemplary embodiment (FIG. 7, FIG. 8) of a first type of rollers 1, segments 73 are acted upon directly by pressure medium and thus pressed radially outward, as a result of which the constriction 31 is removed and a continuous cover 13 is achieved.
If the segments 73 are depressurized, the tappets 57 sprung according to the first exemplary embodiment pull the segments 73 and the cover 13 connected with them back, so that a constriction 31 of the cover 13 occurs.
The segments 73 and the associated groove 54 in the support tube 44 and connecting piece 47 are hat-shaped in cross section with a lower edge and are adapted to one another.
The lower edge of the segments 73 serves as a stop 74. This stop 74 lies in two grooves 76, 77, which are introduced into side surfaces of the groove 54 in the support tube 44 and limit a stroke of the segments 73 both outwards and inwards.

In the connector 47 are from the chamber 79 in the groove 54 of the support tube 44 extends radially Bores 78 introduced. The inner bore 53 of the Connecting piece 47 forms with the washer 49 of the second section 48 a chamber 79. In this chamber 79 opens a first end of a feed pipe 81 second end of this feed pipe 81 is by means of a seal 82 with the blind hole 36 of the pin 4th connected. The feed pipe 81 is by means of a Rolling bearing 83 and an adapter piece 84 rotatable stored with respect to the pin 4.

If the chamber 79 is free of pressure, the segments 73 are through the plungers 57 are retracted inwards and the cover 13 is provided with a constriction 31. Will the chamber 79 pressurized, the segments 73 pressed outward and the constriction 31 of the cover 13 canceled.

In a third embodiment (FIG. 9) one Roller 1 is the first instead of segments 61, 73 an annular hose 86 in both examples intended. The tube 86 is seen in cross section provided with a hat-shaped ring 87. An outside surface 88 of the ring 87 is with an inside 32 of the cover 13 of the roller 1 connected. A lower edge of the ring 87 serves as the stroke in the radial direction to the outside limiting stop 89, which has side grooves 91, 92 of the connector 47 cooperates. To one The bottom of the stop 89 engage on both sides internally acting spring elements 93, 94 on the in the groove 54 of the connecting piece 47 and the washer 49 are attached. This hose 86 is by means of a Connector 96 connected to the feed pipe 81. This feed pipe '81 and the associated Pressure medium supply is the second Embodiment executed.

When the hose 86 is free of pressure, the spring elements 93, 94 pull the hat-shaped ring 87 and thus the cover 13 radially inwards. The constriction 31 is thus formed in the cover 13.
To cancel the constriction 31 of the cover 13, the pressure medium is applied to the hose 86. As a result, the ring 87 is pressed radially outward until the lower stop 89 abuts on the side walls of the grooves 91, 92.

The constriction 31 can also be achieved by that the inside 32 of the cover 13 indirectly or directly is subjected to negative pressure.

In a fourth exemplary embodiment (FIGS. 10 to 12), a support tube 97 is provided with a shoulder 98, on which a sleeve 99 is slidably mounted in the axial direction of the roller 1. This sleeve 99 is secured against rotation in the circumferential direction. Sleeve 99 and support tube 97 are each provided with a collar 101; 102 provided. This collar 101, which is larger in diameter than sleeve 99 or support tube 97; 102 can, for example, be molded on directly or each consist of a disk mounted on the shoulder 98 of the support tube 97.
The opposite side surfaces 103; 104 of the two collars 101; 102 have a variable distance a106, e.g. B. a106 = 20 mm. In order to change this distance a106, an actuating device (not shown) acts on the sleeve 99 and axially displaces the sleeve 99. This actuating device can be actuated, for example, by means of a threaded spindle, a working cylinder which can be pressurized with pressure, or an electric motor. Thus, an adjustment of the sleeve 99 is also possible while the machine is running.
To coat the sleeve 99 and the support tube 97 with a rubber-elastic cover 13, the sleeve 99 is moved into its position remote from the support tube 97 (FIG. 10), so that between the two collars 101; 102 a circumferential, cross-sectionally U-shaped groove 106 is formed.
With the support for the sleeve 99 forming the cover and the support tube 97, the rubber-elastic cover 13 is now firmly connected, for. B. vulcanized or glued. This cover 13 also fills the groove 106 except for a narrow gap 107 at the bottom of the groove, ie the side surfaces 103; 104 of the groove 106 are firmly connected to the cover 13, while a gap 107 remains between the cover 13 and the support tube 97 on the groove base. It is also possible not to provide a gap 107 at the bottom of the groove, but here too the cover 13 in the region of the constriction 31 is not connected to a carrier 97, 99 in the radial direction. In the area of the groove 106, the cover 13 has a material accumulation 108 which acts as a support element. This accumulation of material 108 ′ is annular in the direction of the interior of the roller 1, z. B. formed as a circumferential bead.
After the application of the cover 13, the sleeve 99 is moved in the direction of the support tube 97, ie the center of the roller, so that the distance a106 between the two side surfaces 103; 104 of the groove 106 z. B. by 2 mm to a distance a106 ', z. B. a106 '= 18 mm is reduced. Since the rubber-elastic material of the cover 13 is largely incompressible, the material of the cover 13 is forced radially both outwards and inwards. The gap 107 at the groove base is thus reduced, while at the same time a circumferential annular bead 111 is formed on the outer lateral surface 109 of the rubber-elastic cover 13 (FIG. 11). This bead 111 is milled or ground off, for example, and the cover 13 is finished to a desired diameter. This results in a continuous, uninterrupted cover 13 with a uniform outer diameter throughout the area of the groove 106.
To subdivide the cover 13 into cylindrical sections 17; 18, the distance a106 'of the side surfaces 103; 104 of the groove 106 is increased, for example, by 1 mm to the distance a106 ". Axial forces act on the cover 13 in the region of the groove 106, and the cover 13 in the axial direction expands forces, which reduce the diameter of the cover 13 in the region of the groove 106 cause.

The deformation of the cover 13 to achieve a Constriction 31 is reversible.

According to the exemplary embodiments according to FIGS. 13 to 18, supporting elements can also be arranged in the groove 106 in addition to the material accumulation 108 or instead of the material accumulation 108. These support elements can be designed, for example, as 0-rings 112 made of rubber-elastic material (FIG. 3; FIG. 14).
It is also possible to arrange alternating rings 113 (for example made of steel) and disks 114 with a small thickness, for example made of plastic (Teflon, Viton) in the groove 106 as support elements (FIG. 15; FIG. 16). The discs 114 and rings 113 are axially movable in the groove 106. Preferably, the rings 113 are connected to the inner surface of the cover 13, while the washers 114 are not connected to the cover 13. The application and finishing of the cover 13 takes place with rings 113 pushed together; 114 according to FIG. 15. The constriction 31 of FIG. 16 takes place by pulling the sleeve 99 to the dimension a106, ie vulcanizing and processing at a106 'and pulling onto a106. The constriction 31 is also produced and achieved, as in principle in Example FIG. 15; 16, possible.
In a further exemplary embodiment (FIG. 17; FIG. 18), a so-called corrugated tube 116 is used as the support element. This corrugated tube 116 is connected to the inside of the cover 13 and is movable relative to the base of the groove.

In an eighth embodiment, radial Forces generated on the inside of the cover 13, by means of the segment 61 similar to FIG. 5. In FIGS. 19 and 20 are a plurality in the axial direction of the roller 1 arranged by disc-shaped segments 142. This Segments 142 are with the inside of the cover 13 connected and radially movable. The radial movement of the Segments 142 are of different sizes, so that of the Shell surfaces of the segments 142 formed envelopes approximately the mirrored shape of the constriction 31 can have. The segments 142 can, however, together with different stroke or independently of each other or be movable in groups.

It is also advantageous to cover 13 with a Reinforcement 117, for example made of steel mesh (Fig. 15; Fig. 16) to be provided. This reinforcement 117 is in the area recessed the desired constriction 31. The Reinforcement 117 is therefore only in the area of the reference 13 is firmly connected to carriers.

A ratio of a length L14, L16, L17, L18, e.g. B. 2 mm, preferably plate width of a section 14; 16; 17; 18 to the distance a106 of the side surfaces 103; 104 of the groove 106 is preferably larger than 10. The Distance a106 is always smaller than constriction 31.

The individual sections 14, 16, 17, 18 each Roll 1 according to the invention preferably have the same large outer diameter and the outer surface is 8 mounted concentrically to an axis of rotation of the roller 1.

The roller according to the invention is in a first Operating mode reversible through at least one rotating annular recess, d. H. the constriction 31 in at least two cylindrical ones lying next to each other Sections 14, 16, 17, 18 divided. In a second Operating mode, this constriction 31 to form a functionally uninterrupted lateral surface 8 canceled.

Reference list

1

roller

2nd

-

3rd

Cones

4th

Cones

5

-

6

-

7

-

8th

Lateral surface (6)

9

-

10th

-

11

Groove

12th

Center line

13

reference

14

Section (6)

15

-

16

Section (6)

17th

Section (6)

18th

Section (6)

19th

-

20 -

21

-

22

-

23

-

24th

Half (1)

25th

-

26

Half (1)

27

-

28

-

29

Lateral surface

30th

-

31

Constriction (29)

32

Inside (13)

33

Groove

34

Through hole

35

-

36

Blind hole

37

chamber

38

Connection

39

Rifle

40

-

41

roller bearing

42

flange

43

Section, first (44)

44

Support tube

45

-

46

Threaded screw

47

Connector

48

Section, second (44)

49

disc

50

-

51

Threaded screw

52

bearings

53

Inner bore (47)

54

Groove (47)

55

-

56

Bore (47)

57

Pestle

58

Circlip (57)

59

Belleville spring

60

-

61

Segment (62)

62

Support ring

63

External surface (61)

64

Piston rod

65

-

66

Cone (64)

67

disc

68

Compression spring

69

flange

70

-

71

Threaded screw

72

poetry

73

Segment (62)

74

Stop (73)

75

-

76

Groove

77

Groove

78

drilling

79

chamber

80

-

81

Feed pipe

82

poetry

83

roller bearing

84

Adapter piece

85

-

86

tube

87

Ring (86)

88

External surface (87)

89

Stop (87)

90

-

91

Groove

92

Groove

93

Spring element

94

Spring element

95

-

96

Connector

97

Support tube

98

Heel (97)

99

Sleeve

100

-

101

Collar (97)

102

Collar (99)

103

Side (101)

104

Side (102)

105

-

106

Groove

107

gap

108

Material accumulation

109

Lateral surface

110

-

111

bead

112

O-ring

113

ring

114

Bowl

115

-

116

Corrugated pipe

117

Reinforcement

118

poetry

119

Threaded nut

120

-

121

Connection

122

chamber

123

Flange (4)

124

Threaded screw

125

-

126

disc

127

casing

128

tube

129

Connection

130

-

131

Threaded spindle

132

Slot (131)

133

pen

134

Male thread (131)

135

-

136

Internal thread (137)

137

Worm wheel

138

Bearing shell

139

bearings

140

-

141

slug

142

segment

a33

distance

a106

distance

a106 '

distance

a106 "

distance

d44

outer diameter

d63

diameter

h61

height

L14

length

L16

length

L17

length

L18

length

t54

depth

d64min.

diameter

d64max.

diameter

Claims (24)

1. Roller (1) for a rotary printing machine, the barrel (6) of the said roller (1) having an at least partly uninterrupted circumferential surface (8) of a resilient cover (13), characterized in that this circumferential surface (8) can optionally be subdivided by means of an annular constriction (31), whose diameter can be reduced reversibly, in the cover (13).
2. Roller (1) according to Claim 1, characterized in that actuating means (61; 73; 87) acting on the cover in the radial direction are provided.
3. Roller (1) according to Claim 1, characterized in that actuating means (97; 99) acting on the cover in the axial direction are provided.
4. Roller (1) according to Claim 2, characterized in that actuating means (61; 73; 87) which press radially outwards and cancel out the constriction (31) are arranged on the inner side (32) of the cover (13).
5. Roller (1) according to Claim 3, characterized in that the roller (1) has cylindrical supports (97; 99) for the cover (13) which can be displaced axially relative to one another, in that the supports (97; 99) are located beside one another with a variable spacing (a106), forming a circumferential groove (106), in that the cover (13) is permanently connected to the supports (97; 99) and in that the cover (13) is arranged such that it can be expanded or end-compressed in the area of the groove (106).
6. Roller (1) according to Claim 5, characterized in that supporting elements (102; 113; 114; 117) are arranged in the area of the constriction (31).
7. Roller (1) according to Claim 5, characterized in that an accumulation (108) of the resilient material is provided in the area of the constriction (31).
8. Roller (1) according to Claim 1, characterized in that a ratio between a length of a cylindrical section (14; 16; 17; 18) of the barrel (6) which is divided off by the constriction (31) and the width of the constriction (31) is greater than 10.
9. Roller (1) according to Claim 2, characterized in that the inside (32) of the cover (13) is connected to segments (61; 142) of a supporting ring (62), and in that these segments (61; 142) are arranged such that they can be moved radially.
10. Roller (1) according to Claim 9, characterized in that a number of segments (142) is arranged in the axial direction.
11. Roller (1) according to Claim 9, characterized in that the segments (61) can be moved pneumatically.
12. Roller (1) according to Claim 2, characterized in that the inside (32) of the cover (13) is connected to a tube (86) to which pressure medium can be applied.
13. Roller (1) according to Claim 2, characterized in that the inside (32) of the cover (13) can have a vacuum applied directly or indirectly to it.
14. Roller (1) according to Claim 1, characterized in that the roller (1) is designed as an applicator roller interacting with a plate roller.
15. Roller (1) according to Claim 1, characterized in that the resilient cover (13) has no reinforcements (117) in the area of the constriction (31) but has a reinforcement (117) outside the area of the constriction (31).
16. Method for subdividing a roller (1) whose barrel (6) has an at least partly uninterrupted circumferential surface (8) of a resilient cover (13), characterized in that that this circumferential surface (8) is optionally subdivided by means of an annular constriction (31), whose diameter can be reduced reversibly, in the cover (13).
17. Method according to Claim 16, characterized in that the constriction (31) is produced or cancelled out by means of forces acting radially on the cover.
18. Method according to Claim 16, characterized in that the constriction (31) is produced or cancelled out by means, of forces acting axially on the cover (13).
19. Method according to Claim 18, characterized in that the constriction (31) is cancelled out by means of forces compressing the cover (13) in the axial direction.
20. Method according to Claim 18, characterized in that the constriction (31) is cancelled out by means of forces expanding the cover (13) in the axial direction.
21. Method for producing a roller (1) having a resilient cover (13), first of all supports (97; 99) being coated with the resilient cover (13), characterized in that the resilient cover (13) is subsequently deformed in such a way that an annular bead (111) is produced on the circumferential surface (8) of the cover (13), in that the cover (13) is finally machined in this state and the bead is removed in the process, so that a continuous circumferential surface (8) of equal diameter is produced.
22. Method according to Claim 21, characterized in that the resilient cover (13) is end-compressed in order to produce the bead (111).
23. Method according to Claim 21, characterized in that the resilient cover (13) is bowed out radially from the inside in order to produce the bead (111).
24. Roller according to Claim 5, characterized in that the supports (97; 99) are arranged to interact with collars (101; 102) engaging radially outwards in the cover (13).

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