EP1673224B2 - Movable frame parts in a printing press - Google Patents

Abstract

A printing unit of a printing press includes at least two frame parts whose distance from each other can be varied. Each of these frame parts include two laterally spaced frame plates. The two frame plates in each of the frame parts accommodate at least one cylinder or roller which extends between them. The two lateral frame plates in each frame part are spaced from each other in an axial direction of the supported cylinder or roller. Adjacent ones of the frame parts are connectable to each other by abutting of their respective lateral frame plates. At least three locking and/or centering devices are used to align and to lock together the lateral frame plates of adjacent ones of the frame parts.

Description

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

From the EP 0 749 369 B1 a printing unit is known in which rollers are mounted on the movable frame part, which rest on horizontal rails and which also carry the stationary frame part. In a printing unit with dimensions suitable for newspaper printing, the load resting on each roller of the movable frame part can reach a value of several tons. At the contact surfaces between the rollers and the rails thus extreme pressures occur. While the rollers can be made of hardened steel, which is resilient to the pressures encountered, this is difficult for the rails due to their dimensions. However, if the rails are made of unhardened steel, there is a risk of the wheels pressing into the rails and making it impossible to evenly move or even move the movable frame member.

The US 5 060 569 A describes a frame insert for cylinders of a printing machine, which is moved to lift on liftable rails and are arranged at the hook for locking.

The EP 1 149 694 A discloses a printing machine with movable frame parts which are locked by means of hooks.

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

The object is achieved by the features of claim 1.

Due to the retractability of the rollers, the possibility is created to shift the weight bearing on them at least partially to a different contact surface from the rollers and so relieve the roles to the extent that depression of the rollers in a carrier is no longer to be feared.

Since such a contact surface can be made slightly larger than the contact surface between a roller and a carrier, the pressure loads that occur can be reduced, even if the entire weight of the movable frame member is shifted to the contact surfaces other than the rollers, and the pressure load requirements a support on which the movable frame part is supported can be reduced.

Preferably serve as a carrier on which support the different contact surfaces of the rollers, the rails on which rest in the extended state, the rollers.

The contact surfaces can be easily formed by the lower edges of side frame plates of the movable frame part.

Preferably, each frame part has at least one blanket cylinder as the printing gap bounding cylinder, a forme cylinder and an inking unit, so that the two blanket cylinders, forme cylinder etc. each form a suitable for perfecting printing unit in bridge construction.

The adjustability of the rollers between the extended and the recessed position is preferably achieved in that the axes of rotation of the rollers each to a

Eccentric axis are pivotally supported on the movable frame part. For driving a pivoting movement of at least one of the rollers about its eccentric axis, a pneumatic or hydraulic actuator is preferably used.

If in each case two rollers which can be pivoted about a common eccentric axis are arranged on a common torsion-resistant shaft, a single actuator can be used for pivoting both rollers and / or tilting of the printing unit during the retraction or extension of the rollers can be avoided.

In a movable frame member with two side frame plates, the two rollers pivotable about a common eccentric axis are each arranged so as to support different frame plates.

A plurality of rollers, in particular those running on a common rail or support a same frame plate, may be pivotally coupled via a rod which acts via levers on the shafts of the rollers.

In order to set the position of the two frame parts to each other in a non-spaced working position, a projection formed in the direction of movement of the movable Gestellteis is formed on one of the frame parts and on the other frame part a complementary shaped to the projection recess, the form-fitting interlock when the frame parts without Distance are arranged.

The projection or the recess can automatically a centering effect

Merging the frame parts exercise when the projection is tapered to its free end and / or the recess to a bottom.

Preferably, the projection is formed as a vertically oriented rib and the recess as a vertically oriented groove to define the position of the two frame parts to each other only in a horizontal direction transverse to the direction of movement, but not in the vertical.

In order to guide the movement of the movable frame part, at least one upright guide rail, which is fixedly connected to one of the frame parts and extends in the direction of movement of the movable frame part, is preferably encompassed on two sides by a tracking device of the other frame part. This tracking device preferably comprises at least one pair of guide rollers rolling on the two sides of the guide rail.

To move the movable frame part is expediently mounted on one of the frame parts extending in the direction of movement of the movable frame member rack and on the other frame part engaging in the rack self-locking drive, which is disengaged from the rack to not block a movement of the movable frame part in case of failure. The strongly reducing drive is preferably realized by means of a worm gear. It is preferably pivotally mounted to disengage from the rack.

In order to lock stationary and movable frame parts of the printing unit together in a working position, at least one hook is preferably provided on one of the frame parts which can be brought into engagement with the other frame part and acted upon by a pulling force acting in the direction of the frame part. The movable frame member is preferably identical to the above-mentioned movable frame member; the stationary frame parts may also include the carrier in addition to the frame-fixed frame part.

Preferably, the hook engages a roller of the other frame part, so that its movement into an engagement position or out of the engagement position is not hindered by excessive frictional forces. Preferably, a pneumatic or hydraulic actuator is used to drive a pivoting movement of the hook into or out of the engaged position. The supply of the actuator with pressurized fluid is simplified when the frame member to which the hook and the actuator are mounted, the stationary frame part.

At least one hook should exert a pulling force with a downward component on the movable frame member to fix the latter also in the vertical direction.

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

Fig. 1

eine schematische Darstellung eines Druckwerkes mit einem vom ortsfesten Gestellteil beabstandeten beweglichen Gestellteil;

Fig. 2

das Druckwerk aus Fig. 1 mit dem beweglichen Rahmenteil in einer vom ortsfesten Gestellteil nicht beabstandeten Stellung und mit ausgefahrenen Rollen;

Fig. 3

das Druckwerk aus Fig. 1 mit eingefahrenen Rollen in einer Arbeitsstellung;

Fig. 4

schematisch die Aufhängung der Rollen an einer Seitengestellplatte des beweglichen Gestellteils in ausgefahrener Stellung;

Fig. 5

das bewegliche Gestellteil mit den Rollen in versenkter Stellung;

Fig. 6

eine perspektivische Ansicht eines Fahrgestells des beweglichen Gestellteils sowie von Schienen des ortsfesten Gestellteils, auf denen sich das Fahrwerk bewegt;

Fig. 7

einen schematischen Schnitt durch einen Radkasten des Fahrwerks aus Fig. 6;

Fig. 8

einen Antriebsmechanismus zum Antreiben der Bewegung des beweglichen Gestellteils entlang der Schienen;

Fig. 9

einen schematischen Schnitt durch den Antriebsmechanismus aus Fig. 8;

Fig. 10

eine schematische Ansicht eines Verriegelungsmechanismus zum Verriegeln der Gestellteile aneinander;

Fig. 11

eine z.T. geschnittene Draufsicht auf den Verriegelungsmechanismus der Fig. 9;

Fig. 12

eine schematische Ansicht eines Verriegelungsmechanismus zum Verriegeln des beweglichen Gestellteils am Träger.

Fig. 13

eine schematische Darstellung eines Druckwerkes mit zwei beweglichen und einem gestellfesten Gestellteil ;

Fig. 14

eine schematische Darstellung einer verriegelten Druckeinheit gemäß Fig. 13.

Show it:

Fig. 1

a schematic representation of a printing unit with a spaced from the stationary frame part movable frame part;

Fig. 2

the printing unit off Fig. 1 with the movable frame part in a position not spaced apart from the stationary frame part and with extended rollers;

Fig. 3

the printing unit off Fig. 1 with retracted rollers in a working position;

Fig. 4

schematically the suspension of the rollers on a side frame plate of the movable frame member in the extended position;

Fig. 5

the movable frame part with the rollers in lowered position;

Fig. 6

a perspective view of a chassis of the movable frame member and rails of the stationary frame part on which the chassis moves;

Fig. 7

a schematic section through a wheel arch of the landing gear Fig. 6 ;

Fig. 8

a drive mechanism for driving the movement of the movable frame member along the rails;

Fig. 9

a schematic section through the drive mechanism Fig. 8 ;

Fig. 10

a schematic view of a locking mechanism for locking the frame parts to each other;

Fig. 11

a partially cutaway plan view of the locking mechanism of Fig. 9 ;

Fig. 12

a schematic view of a locking mechanism for locking the movable frame part on the carrier.

Fig. 13

a schematic representation of a printing unit with two movable and a frame-fixed frame part;

Fig. 14

a schematic representation of a locked printing unit according to Fig. 13 ,

The Fig. 1 to 3 illustrate the basic principle of the invention. Shown is a printing unit with four superposed printing units, with pairs of cylinders 01, z. B. blanket cylinders 01 or rollers. Each blanket cylinder 01 is assigned in a conventional manner a plate cylinder, an inking unit and a dampening unit, which together with the blanket cylinder 01 between side frame plates 02; 03 are held. The internal structure of the printing units will not be described in detail here, as it is not necessary for understanding the present invention; a description of this internal structure is in EP 07 49 369 B1 given, to which reference is hereby made.

The two side frame plates 02, together with the cylinders 01, inking and dampening units carried by them, form a frame-fixed frame part 13, they are fixed between upper and lower beams 04; 06 mounted. The two side frame plates 03 together with the cylinders 01, inking and dampening units carried by them form a movable frame part 15; they are fixed between upper and lower straps 04; 06, which are each constructed on two mutually transversely connected parallel rails 05 (see Fig. 6 and 12 ). The side frame plates 03 are provided at their lower edge with rollers 07 which extend between an extended and a lowered position are adjustable; they form a movable frame part 15 together with the components held between them. Fig. 1 shows the rollers 07 in their extended position, in which they keep the side frame plates 03 spaced from the rails 05 of the lower carrier 06. These rails 05 serve simultaneously as a web on which roll the rollers 07.

Fig. 1 shows the movable frame member 15 in a position spaced from the side frame plates 02 position in which an operator 08 enter the space between the pairs of blanket cylinders 01 and perform maintenance such as a rubber replacement. After completion of the maintenance, the movable frame member 15 in the Fig. 1 moved to the left until it was in Fig. 2 shown position, the stationary side frame plates 02 and the movable side frame plates 03 each on mutually facing edges 09; 11 touch. In this position, with further extended rollers 07, the blanket cylinder 01 of the movable frame member 15 are slightly higher than that of the stationary. By the rollers 07 are brought into their recessed position in which they no longer protrude beyond the lower edge of the side frame plates 03, the movable frame member 15, as in Fig. 3 shown, a piece far lowered, so that the lower edges of the side frame plates 03 come to rest on the rails 05 of the carrier 06, and the pairs of blanket cylinders 01 each come to the same height and form a pressure nip, in which a guided between them material web 12th , z. B. paper web 12 can be printed.

While in the positions of Fig. 1 and 2 the rollers 07 carry the entire weight of the movable frame member 15 with the side frame plates 03 and held between them cylinders 01 of multiple printing units and transferred to a small surface of the lower carrier 06, distributed in the position of Fig. 3 in which the entire lower edge of the side frame plates 03 rests on the lower support 06, the weight on a much larger area than when the frame part 15 is supported only by the rollers 07. The rollers 07 carry the movable frame part 15 only when this is to be moved, and possibly when it is as in Fig. 1 is shown spaced from the frame-fixed frame member 13 and the space between the frame parts 13; 15 is accessible, so only for a relatively short periods of time. During printing operation, the side frame plates 03 rest with their lower edges on the lower support 06. There is therefore no risk that the rollers 07 press into the lower support 06 or take the rails 05 of the lower support 06 otherwise damage so that the Mobility of the movable frame member 15 would be affected.

A preferred mechanism for retracting and extending the rollers 07 is in the 4 and 5 shown, where Fig. 4 the rollers 07 in the extended and Fig. 5 in the lowered position shows. The rollers 07 have an axis of rotation 14, which are articulated via a lever arm 17 to a fixed relative to the side frame plate 03 pivot axis 16. With the lever arm 17 of the right roller 07 in the figure, a lever arm 18 is rigidly connected, the free end of a piston rod 19 of a pneumatic or hydraulic actuator 21, z. B. a hydraulic cylinder 21 attacks. A rod 22, z. B. synchronous rod 22, is hinged on the one hand to a free end of a rigidly connected to the lever arm 17 of the left roller 07 lever arm 23 and on the other hand to an intermediate point on the lever arm 18. The distance of the intermediate point from the adjacent eccentric axis 16, z. B. pivot axis 16, corresponds to the length of the lever arm 23, so that coupled by the synchronizer rod 22 lever arms 18; 23 always perform the same rotational movements. In the position of Fig. 4 is a remote from the piston rod 19 chamber 26 of the hydraulic cylinder 21 is pressurized, so that the piston rod 19 is extended to a stop and keeps the rollers 07 in the extended position. By controlled release of compressed gas from the chamber 26, the piston rod 19 is retracted slowly, and the rollers 07 pivot counterclockwise about their pivot axes 16 until the lower edge of the side frame plate 03 touches on the support 06. The rollers 07 are then in a retracted position in which they rest loosely on the carrier 06; By pressurizing a second, the piston rod 19 facing chamber 27 of the hydraulic cylinder 21, they can from the carrier 06 in the in Fig. 5 be lifted position shown.

Fig. 6 shows a detailed representation of a chassis of the movable frame member 15 and two rails 05 of the lower carrier 06 on which the chassis is movable. It can be seen the hydraulic cylinder 21 already described, the piston rod 19 and the lever arm 18. The remote from the piston rod 19 end of the hydraulic cylinder 21 is connected to a horizontal arm 28 which extends from a flange 29, from which the viewer side facing four pins 31st protrude. These pins 31 are screws 31, which are provided to the flange 29 on one of the two side frame plates 03 of the movable frame member 15 (which in the Fig. 6 not shown) to screw. Corresponding the same purpose serving pins 32, z. B. screws 32, stand over the side walls of two wheel arches 33; 34 over. The wheel arches 33; 34 each contain one of the already mentioned rollers 07.

A schematic section through the wheel house 34 is shown in FIG Fig. 7 shown. The position of the pivot axis 16 is indicated by a cross. It is the longitudinal axis of a shaft 36, z. B. pivot shaft 36 which extends transversely through the wheel arch 34 and at the outside of the wheel arch 34 of the connected to the piston rod 19 Lever arm 18 attacks. The lever arm 17 is realized by an eccentric sleeve 37, the inner bore surrounds the pivot shaft 36 rotatably and the outer circumference of a bearing 38, for. B. roller bearing 38, a roller 07 carries. The center of the outer circumference of the sleeve 37, which defines the axis of rotation of the roller 07, is designated by a cross 39. When the lever arm 18 is rotated clockwise, the rotation axis 39 moves along the arrow 41, so that finally a part of the running surface of the roller 07 emerges on the open underside of the wheel house 34.

The pivot shaft 36 extends as in FIG Fig. 6 shown, from the wheel arch 34 from transversely under the movable frame member 15 forth and passes through a wheel housing 42 in which in the same way as in the wheel well 34, a roller 07 is mounted.

The synchronizing rod 22 engages on the one hand via a lever arm 43 and on the other hand via the lever arm 23 on the pivot shaft 36 and a parallel thereto, wheel arches 46 and 33 passing through shaft 44, z. B. pivot shaft 44 at. By the synchronizing rod 22 and the continuous, rigid pivot shafts 36, 44, the movements of all rollers 07 are coupled to each other in the extended or lowered position.

With the two wheel arches 33; 34 is a guide rail 47, here with an F-shaped cross section, firmly connected. This displaceable together with the movable frame member 15 guide rail 47 has a vertically downwardly directed rib 48, which passes between two pairs of guide rollers 49 touching at a displacement of the frame member 15, which on one of the rails 05 away from a rolling surface over which the rollers 07 move, are mounted. The interaction of guide rail 47 and guide rollers 49 forces a precisely linear movement of the movable frame member 15 along the rails 05 without the possibility of offset transversely to the longitudinal direction of the rails 05. Although not shown, a corresponding guide rail 47 and guide rollers 49 also on the wheel arches 42 ; 46 or the in Fig. 6 the wearer facing the viewer 06 may be mounted.

On the chassis or one of the mounted side frame plates 03 of the movable frame part 15 which is in Fig. 8 mounted in a perspective view driving device mounted. Of the chassis or one of the side frame plates 03 are transverse to the direction of two rigid arms 51 from. These arms 51 carry between them, hinged on an axle 52, a gear unit 53 with a motor 54, z. B. electric motor 54 which drives a gear 56 via a housed in the gear unit 53 self-locking reduction gear. In the illustrated position of the gear unit 53, the gear 56 meshes with a stationary rack 57th

Fig. 9 shows a section through the drive device of Fig. 8 , It can be seen that the gear unit 53 is supported by a projection 58 of a pivoted lever 59 hinged to one of the arms 51 and thereby the gear 56 is held in engagement with the rack 57. If one were to lift the pivot lever 59, the gear unit 53 could pivot about the axis 52 in a clockwise direction and thus disengage the gear 56 from the rack 57 and cancel the frictional connection between the electric motor 54 and the rack 57.

Inside the gear unit 53 is a directly driven by the motor 54 gear 61, which meshes with a larger gear 62. This is mounted on a common axis with a worm 63, which in turn meshes with a worm wheel 64 which is mounted with the gear 56 on a common axis. Worm 63 and worm wheel 64 cause a self-locking of the transmission, by which the gear 56 is locked when the electric motor 54 is switched off.

Fig. 10 shows a portion of one of the stationary side frame plates 02 and one of the movable side frame plates 03, the vertical edges 09; 11 touching each other in the working position of the printing unit, with a mechanism for locking the side frame plates 02, 03 together in the working position. This mechanism comprises a pivoting hook 66 which is connected to a forked, in the Fig. 10 shown in section bearing block 67 is articulated. Two holes 68 are used to screw the bearing block 67 on the side frame plate 02; these holes 68 allow a horizontal play of the bearing block 67. This game allows, despite dimensional tolerances of the hook 66 and the side frame plates 02; 03 to place the hook 66 exactly so that an inner edge 69 of the hook 66 engages behind a locking projection 71 on the movable side frame plate 03 exactly touching. The radius of the inner edge 69, based on the pivot axis of the hook 66 on the bearing block 67, decreases slightly in the counterclockwise direction, so that the inner edge 69 is able to engage behind the locking projection 71, even if the edges 09; 11 of the side frame plates 02; 03 do not touch each other directly, and by pivoting the hook 66 in a clockwise direction, the two side frame plates 02; 03 to pull each other until they touch in the illustrated stop position. The pivoting movement of the hook 66 is controlled by an actuator 72, for. B. a pneumatic cylinder 72, driven.

The locking projection 71 is formed by a fixedly connected to the side frame plate 03 central pin 73 and a pin 73 surrounding, roller bearing roller 74. This roller 74 may rotate when the hook 66 is pressed onto the locking projection 71, so that despite considerable tensile forces that the hook 66 can exert when pivoting on the locking projection 71, the movement of the hook 66 is not blocked by excessive friction.

To exclude that the bearing block 67th slipped on the side frame plate 02 and no sufficient tensile force can be exerted on the locking projection 71, the bearing block 67 is additionally secured by two screws 76 which are screwed by a rigidly fixed to the plate 02 holding block 77 in the bearing block 67. The Fig. 10 shows these screws 76 screwed in until it stops, so that the bearing block 67 contacts the holding block 77. If the screws 76 are loosened a little way, it is possible to place the bearing block 76 slightly closer to the edge 09 and to fix with the aid of engaging in the holes 68 screws on the side frame plate 02.

Fig. 11 shows the locking mechanism of Fig. 10 partly in plan view, partially cut. One recognizes the pneumatic cylinder 72 and the hook 66, on which it articulates. At the contacting edges 09; 11 of the side frame plates 02; 03 two recesses are formed, wherein in the recess of the side frame plate 02 an insert body 78 with a vertical recess 79, z. B. groove 79 is screwed by trapezoidal cross-section and an insert body 81 with a form-fitting engaging in the groove 79 projection 82, z. B. rib 82, is housed in the recess of the side frame plate 03. The insert body 81 serves as a support for pin 73 and roller 74 of the locking projection 71st

Rib 82 and groove 79 ensure a precisely aligned alignment of the side frame plates 02; 03 to each other transversely to the direction of movement when they touch each other in the working position of the printing unit. To avoid over-determination, insert body 81 with groove 79 and rib 82 are each only on one of the two side frame plates 02; 03 of the stationary or the movable frame part 15 is provided; the at the other side frame plates 02; 03 mounted insert body are flat on their sides facing each other. Rib 82 and groove 79 allow a vertical movement of the side frame plates 02; 03 against each other in the transition of the rollers 07 between the retracted and the extended position.

Fig. 12 shows two hooks 83, which are provided in pairs on the two lower supports 06. A first hook 83 with a ramp-shaped upper side is pivotable about an axis 84 on the side frame plate 02 and has on its upper side a notch 86, which receives a locking projection 87 of the side frame plate 03 in the locked state. The structure of the locking projection 87 is the same as the locking projection 71. For locking and unlocking the hook 83 is an actuator 88, z. B. pneumatic cylinder 88 which is mounted on the lower carrier 06 is oriented substantially horizontally. The piston rod of the pneumatic cylinder 88 is articulated to a first rod 89 which engages the hook 83, and to a second rod 91, which in turn is hinged at its second end to the carrier 06 and forms an angle with the rod 89. When the piston rod is retracted from the extended position shown, the angle between the rods 89 decreases; 91, the engagement point of the rod 89 on the hook 83 lowers, and the locking projection 87 is released, so that the movable frame member 15 can be moved.

A second actuator 92, z. B. pneumatic cylinder 92k, like the pneumatic cylinder 88 is aligned substantially horizontally on the carrier 06 and has a piston rod, the two rods 93; 94, which are similar to the rods 89; 91 are angled against each other, on the one hand to the carrier 06 and on the other hand to a hook 96 engages. This hook 96 has like the hook 66 has an inner edge 97 which slides on extension of the hook 96 on a locking projection 98 of the side frame plate 03, while a downward and to the side frame plate 02 oriented towards the traction on the locking projection 98 which increases, depending closer to the hook 96 at his in the Fig. 12 shown stop position is. The hook 96 thus performs a double locking function; On the one hand he holds the side frame plate 03 pressed against the side frame plate 02, on the other he holds it firmly on the carrier 06.

The hooks 66; 83; 96 are for example by means of a toggle lever beätigbar.

In another embodiment ( Fig. 13 and Fig. 14 ), the printing unit has three frame parts 104; 106; 107, wherein in the middle frame part 106 form cylinder and transfer cylinder are arranged. In the two outer frame parts 104 and 107 of the form cylinders associated inking units are arranged.

Like in the Fig. 13 illustrated, the two outer frame parts 104 and 107 are movable in a maintenance or set-up position, so that in each case a walk-in space is formed.

The collapsed state, as in the Fig. 14 is the production position, ie the printing unit is printing. In this case, the three frame parts 104; 106; 107 interconnected by means of locking devices 108. In this figure, six locking devices 108 are shown.

In the present example, the middle frame part 106 has at least two pairs of cylinders arranged as a bridge printing unit, but preferably four bridge printing units arranged vertically cooperating.

The forme cylinders of the exemplary embodiments preferably each have at least two pressure plates, preferably four pressure plates, in the axial direction.

LIST OF REFERENCE NUMBERS

01

Blanket cylinder

02

Side frame panels

03

Side frame panels

04

Carrier, upper

05

rail

06

Carrier, lower

07

role

08

operator

09

Edge (02)

10

-

11

Edge (03)

12

Material web, paper web

13

frame part

14

axis of rotation

15

frame part

16

Eccentric axis, pivot axis

17

lever arm

18

lever arm

19

piston rod

20

-

21

Actuator, hydraulic cylinder

22

Rod, synchronous rod

23

lever arm

24

cylinder chamber

25

-

26

chamber

27

chamber

28

poor

29

flange

30

-

31

Pen, screws

32

Pen, screws

33

wheel well

34

wheel well

35

-

36

Shaft, pivot shaft

37

Sleeve, eccentric

38

roller bearing

39

axis of rotation

40

-

41

arrow

42

wheel well

43

lever arm

44

Shaft, pivot shaft

45

-

46

wheel well

47

guide rail

48

rib

49

leadership

50

-

51

poor

52

axis

53

gear unit

54

Engine, electric motor

55

-

56

gear

57

rack

58

head Start

59

pivoting lever

60

-

61

gear

62

gear

63

slug

64

worm

65

-

66

hook

67

bearing block

68

drilling

69

inner flange

70

-

71

locking projection

72

Actuator, pneumatic cylinder

73

spigot

74

role

75

-

76

screw

77

holding block

78

insert body

79

Recess, groove

80

-

81

insert body

82

Projection, rib

83

hook

84

axis

85

-

86

score

87

locking projection

88

Actuator, pneumatic cylinder

89

pole

90

-

91

pole

92

Actuator, pneumatic cylinder

93

pole

94

pole

95

-

96

hook

97

palm

98

locking projection

99

-

100

-

101

Side frame panels

102

Side frame panels

103

Side frame panels

104

Frame part, outer

105

-

106

Frame part, inner

107

Frame part, outer

108

locking device

Claims (20)

1. Printing unit of a printing press, wherein at least two parts (13; 15; 104; 107) of a frame which are capable of being altered in their distance relative to each other are provided, wherein each of these parts (13; 15; 104; 106; 107) of the frame has two lateral frame plates (02; 03; 101; 102; 103) receiving at least one cylinder (01) or one roller in each case and arranged at a distance in the axial direction, and two lateral frame plates (02; 03; 101; 102; 103) are fixed in each case by an upper locking apparatus (108) and/or centring apparatus and a further locking apparatus (108) and/or centring apparatus, wherein these two lateral frame plates (02; 03; 101; 102; 103), which are fixed by two locking apparatuses (108) and/or centring apparatuses, are fixed by at least one additional third locking apparatus (108) and/or centring apparatus, wherein two indentations are formed on those edges (09; 11) of the lateral frame plates (02; 03) which touch one another, wherein an insert member (78) having a vertical recess (79) of trapezoidal cross-section is screwed in the indentation of the lateral frame plate (02) and an insert member (81) having a projection (82) engaging the recess (79) in an interlocking manner is housed in the indentation of the lateral frame plate (03), wherein the insert members (78; 81) having recess (79) and projection (82) are provided in each case only on one of the two lateral frame plates (02; 03) of the stationary or of the movable part (15) of the frame.
2. Printing unit according to Claim 1, characterized in that at least one part (13; 15; 104; 106; 107) of the frame has four cylinders (01) arranged one above the other.
3. Printing unit according to Claim 1, characterized in that the additional locking apparatus (108) and/or centring apparatus is provided between the second and third cylinders (01) arranged in the vertical direction.
4. Printing unit according to Claim 1, characterized in that this additional locking apparatus (108) and/or centring apparatus is arranged in the vertical direction between the upper and lower locking apparatus (108) and/or centring apparatus.
5. Printing unit according to Claim 1, characterized in that at least eight forme cylinders and eight transfer cylinders are arranged in a printing unit.
6. Printing unit according to Claim 1, characterized in that at least six locking apparatuses (108) and/or centring apparatuses are arranged in a printing unit.
7. Printing unit according to Claim 1, characterized in that at least twelve locking apparatuses (108) and/or centring apparatuses are arranged in a printing unit.
8. Printing unit according to Claim 1, characterized in that the insert member (81) is provided as a locking apparatus (108) and this insert member (81) carries the locking projection (71).
9. Printing unit according to Claim 1, characterized in that the forme cylinders and transfer cylinders are arranged in a part (106) of the frame, and inking units associated with the forme cylinder are arranged in two other parts (104; 107) of the frame.
10. Printing unit according to Claim 1, characterized in that the locking apparatus (108) has at least one hook (66; 83; 96) engaging a locking projection (71).
11. Printing unit according to Claim 10, characterized in that the hook (66; 83; 96) is capable of being brought into and out of engagement by pivoting.
12. Printing unit according to Claim 1, characterized in that at least one locking apparatus (108) has a pivotable hook (66; 83; 96) and that the pivot axis (84) of the hook (66; 83; 96) is capable of being set relative to a part (02; 102) of the frame.
13. Printing unit according to Claim 1, characterized in that at least one locking apparatus (108) has a pivotable hook (66; 83; 96) and that the pivotable hook (66; 83; 96) is capable of being actuated by means of a toggle lever.
14. Printing unit according to Claim 11, characterized by a pneumatic or hydraulic setting member (72; 88; 92) which engages the hook (66; 83; 96) in order to drive the pivoting.
15. Printing unit according to Claim 11, characterized in that a pivot axis of the hook (66; 83; 96) is displaceable in the effective direction of the tensile force on one part (13; 15; 104; 106; 107) of the frame.
16. Printing unit according to Claim 15, characterized in that one part (13; 106) of the frame is the part (13; 106) of the frame fixed with respect to the frame.
17. Printing unit according to Claim 16, characterized in that the part (13; 106) of the frame fixed with respect to the frame comprises a carrier (06) which extends below the movable part (15; 104; 107) of the frame and on which the movable part (15; 104; 107) of the frame is displaceable, and that the tensile force exerted on the movable part (15; 104; 107) of the frame by at least one hook (96) comprises a component directed downwards.
18. Printing unit according to Claim 1, characterized in that the locking apparatus (108) exerts a force in the vertical direction on a carrier (06) extending below the movable part (15; 104; 107) of the frame.
19. Printing unit according to Claim 1, characterized in that the movable part (15; 104; 107) of the frame is arranged on a chassis.
20. Printing unit according to Claim 19, characterized in that the chassis is in the form of an apparatus for vertical movement of the part (15; 104; 107) of the frame.

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