EP1468824A2 - Device for regulating cylinders in a printing machine - Google Patents

Abstract

To set the position of one roller (21) against another roller (22) in a printing press, for adjustment and/or on installation/dismantling, at least two actuators are used which work in different directions. One actuator (34) uses a pressure hose to exert a radial force in one direction, and a spring (43) applies the radial force in the opposite direction as a plate spring packet. The opening angle between the two actuators on the same roller exerts the same aligned radial forces on both rollers.

Description

The invention relates to devices for adjusting a pressing force, the first Roller and a second roller on at least a third roller in a printing press exercise and / or for turning on / off of a first roller and at least one second roller to or from a third roller according to the preamble of claim 1 or 2.

Inking units or dampening units in printing presses are used for this purpose Printing required color or the required fountain solution to promote appropriate utilities in the pressure zone. To form the required color film or fountain solution film rolls or cylinders in Inking or dampening provided. The terms roller and cylinder have for the Understanding the present invention has the same meaning. The rollers come in so-called roll strips to each other to the plant, so that the color film or the dampening solution film in the roll strip from one roll to another roll can be transferred.

In such inking or dampening units are mounted adjustable in the machine frame Rolls provided, so that by adjusting these adjustably mounted rollers be changed relative to the other rolls of contact pressure in the roll strip can. From EP 08 26 501 A1 an inking unit with a frame-mounted Reiberwalze and a fixed frame mounted cylinder known, the color of the distributor roller on the forme cylinder by a between Reibwalze and form cylinder arranged applicator roll is transmitted. The applicator roller in turn is adjustable in the Machine frame mounted and can with a variable force in the gap between the distributor roller and the forme cylinder are pressed. The device for storage the applicator roll is designed so that the force with the applicator roll in the Gap between form cylinder and distributor roller is pressed, always along one Angle bisector between the distributor roller and the forme cylinder acts. This In other words, although the magnitude of the force to press the Applicator is changeable, but the direction of the force through the constructive Training the adjustment is given unchangeable. To set the Contact pressure in the roller strip between the forme cylinder and the distributor roller On the one hand and the applicator roll on the other hand, so only the contact pressure in their Size to be changed, with the resulting contact pressures in the Roll strip due to the given geometry result.

By the patent DD 64 064 a device for clamping of Bushings for printing and forme cylinder bearings of a printing press known, the Device a hydraulic pressure of the bearing bushes against the bore wall of the Machine frame, wherein the bearing bushes of two shrunk together Socket sleeves exist, wherein in the inner wall of the outer sleeve sleeve two hydraulically acted upon pressure chambers are incorporated, the both sides below 120 ° to the resultant of acting on the bearing mean forces. With this Device, the concentricity properties of the cylinder are improved because by a Eliminate the play that the bushings in the bore of the receiving it Have machine frame, a largely vibration-free running of the cylinder is reached.

The patent DE 15 61 014 C1 shows an adjustable in only one direction Roll storage, especially for friction and application rollers of inking Printing machines, wherein adjusting means for adjusting the roller transversely to its axis are provided, wherein the adjusting means between one with the frame wall associated journal and a roll end receiving, preferably cup-shaped housing are mounted, wherein the bearing pin and the Housing by the adjusting means counteracting spring elements together are connected. The spring elements are preferably as radially extending Rubber buffer or as a pressurizable chamber can be placed under air or liquid pressure, and the adjusting means acting on the journal either as a radially arranged one Adjustment screw or as two at 45 ° to a frame-fixed rib of the journal arranged adjusting screws formed. According to a further embodiment, the Starting or stopping the roller and thus the adjustment of the roller bearing also by two diametrically arranged in the interior of the housing, with air or a liquid be acted upon pressure chambers, wherein the counteracting Pressure chambers are optionally pressurized depending on the desired direction of action. The hiring of the adjustably mounted roller to adjacent rollers takes place in the in The DE 15 61 014 C1 disclosed embodiments preferably characterized in that a in an elastic body inserted pressure chamber or a movably arranged Pistons are pressurized, the pressure chamber due to their endeavor, to expand under pressure in their volume, or the piston moved by the pressure adjustably mounted roller can perform a travel. The contact pressure in the Roll strip between the adjustably mounted roller and its adjacent Rolling is accomplished by the position of the adjusting screw (s). Turning off the adjustably mounted roller is done by releasing the pressure in the pressure chamber and preferably by a recovery of the elastically deformed elastic body. Thus, the arrival and shutdown of the rollers by selective supply or discharge takes place a medium, whereas the adjustment of the rollers to each other by pressing a or more radial adjustment screws is made so that for the arrival and Shutdown of the rollers and the setting of the rollers to each other different means required are.

By GB 1 213 935 A is an apparatus for turning on and off of applicator rolls in an inking unit of a rotary printing press, each applicator roll is mounted in each case on a swivel lever pivotable about an inking roller. The Bearing point of the applicator roll is arranged with a pivot lever and in whose longitudinal direction is connected to movable pressure-medium-loadable pistons, the applicator roll at its pressure medium loading of this piston to the Ink roller sets or is turned off. The pivot lever is through a another arranged in a cylinder pressure medium-loading piston pivoting, said piston in its pressurizing the Pivot lever pivots around the ink fountain roller while the applicator roll to a Form cylinder sets or turns off from this. A disadvantage of this device is that the pistons and pivots for their arrangement and to carry out their movement take on the printing a not inconsiderable space and due their immediate proximity to ink-carrying rollers z. B. by color spray are exposed to significant pollution, resulting in a certain susceptibility arises, which is why time-consuming and costly cleaning and maintenance work a hard to reach place the printing press are required.

From DE 100 01 582 A1 is a device for adjusting the contact pressure between rolls in a printing press, being between adjacent ones Rolling hydraulic, preferably designed as a double piston actuators are arranged.

EP 0 958 918 A1 discloses an apparatus and a method for Semi-automatic adjusting rollers known, with an adjustable first roller is employed against at least one frame-fixed second roller, wherein resilient Means the first roller in the direction of the second roller with a resilient force apply.

The invention has for its object devices for adjusting a Pressing force, a first roller and a second roller on at least a third roller exercise in a printing press and / or for turning on / off of a first roller and at least one second roller to create or from a third roller.

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

The achievable with the present invention consist in particular that the Build devices very compact and the aforementioned disadvantages by integration avoid the actuators in a housing supporting the rollers.

Special advantages in terms of downtime when setting the inking unit or dampening units arise when the press-in pressure in the roll strip is not is set step by step, but essentially simultaneously. The means when adjusting the force with which the adjustable mounted roller against the other Rolling is pressed that the force size and the direction of force are varied so long can, until the respective desired contact pressures result in all roll strips.

To avoid an unwanted adjustment of the contact pressures, it is advantageous if the position of the adjustably mounted roller after adjustment of the contact pressure fixed relative to the two other rollers by operating a fixing device becomes. Can adjust the size and direction of the force to adjust the adjustable Roller can be chosen essentially freely, this can also turn off the color or dampening solution. For these applications, the power to Adjustment of the adjustably mounted roller selected in one direction by the pointing away from both other rollers. As a result, so the adjustable bearing roller as far out of the gap, until no contact between the adjustably mounted roller and the other rollers. Once the adjustable stored roller is separated from the other rollers, then no dampening solution or no more color transferred to the roller strip.

Alternatively, the adjustable mounted roller on a to the order Rotation axis of one of the other rollers pivoting lever mechanism may be arranged. To stop the color or dampening solution can then roll by driving the Lever be lifted off one of the other rollers. The adjustable mounted Roller can after starting the functional position of the lever mechanism, in which the adjustable mounted roller on the other two rollers comes to rest, with one in size and direction adjustable force in the gap between the other two rollers be pressed. This adjustment is then made by operating a fixing device fixed between the adjustably mounted roller and the lever mechanism. Should later the Color or the dampening solution are turned off, the lever mechanism is in the first Swung functional position, in which the adjustably mounted roller of the one roller is lifted off. When adjusting the color or dampening solution is then sufficient Swiveling back the lever mechanism to the second functional position without additional Adjustment of the contact pressure, as the correct setting by the fixing device between the lever mechanism and adjustably mounted roller is fixed.

Embodiments of the invention are illustrated in the drawings and are in Described in more detail below.

Fig. 1

eine schematisch dargestellte Vorrichtung zum Einstellen des Anpressdrucks zwischen zwei Walzen im Längsschnitt;

Fig. 2

die schematisch im Querschnitt dargestellte Vorrichtung gemäß Fig. 1 in einer Grundstellung;

Fig. 3

die schematisch im Querschnitt dargestellte Vorrichtung gemäß Fig. 1 in einer ausgelenkten Stellung;

Fig. 4

die Vorrichtung gemäß Fig. 1 in einer perspektivischen Ansicht ohne Walzenhalter;

Fig. 5

die Vorrichtung gemäß Fig. 1 in einer perspektivischen Ansicht mit Walzenhalter;

Fig. 6

einen Ausschnitt aus einem Farbwerk in schematisch dargestellter seitlicher Ansicht;

Fig. 7

ein zweites Ausführungsbeispiel eines Farbwerks in schematisch dargestellter seitlicher Ansicht;

Fig. 8

einen Ausschnitt aus dem Farbwerk gemäß Fig. 7 in schematisch dargestellter seitlicher Ansicht mit einer gegen zwei Walzen angestellten Walze und einem dazugehörigen Diagramm der Kraftvektoren;

Fig. 9

einen Ausschnitt aus dem Farbwerk mit zwei gegeneinander angestellten Walzen und einem dazugehörigen Diagramm der Kraftvektoren;

Fig. 10

einen Ausschnitt aus dem Farbwerk mit einer abgestellten Walze und einem dazugehörigen Diagramm der Kraftvektoren;

Fig. 11

einen Ausschnitt aus dem Farbwerk mit einer gegen zwei Walzen angestellten Walze und einer Darstellung der radialen Kräfte der Aktoren;

Fig. 12

ein drittes Ausführungsbeispiel einer Walzenanordnung mit zwei unabhängig gegen eine dritte Walze anstellbaren und angestellten Walzen;

Fig. 13

ein viertes Ausführungsbeispiel eines Farbwerks in schematisch dargestellter seitlicher Ansicht.

Show it:

Fig. 1

a schematically illustrated device for adjusting the contact pressure between two rollers in longitudinal section;

Fig. 2

the device shown schematically in cross-section according to Figure 1 in a basic position.

Fig. 3

the device shown schematically in cross-section of Figure 1 in a deflected position.

Fig. 4

the apparatus of Figure 1 in a perspective view without roll holder.

Fig. 5

the device of Figure 1 in a perspective view with roller holder.

Fig. 6

a section of an inking in schematically illustrated side view;

Fig. 7

a second embodiment of an inking in schematically illustrated side view;

Fig. 8

a section of the inking unit of Figure 7 in a schematically illustrated side view with a staff against two rollers roller and an associated diagram of the force vectors ..;

Fig. 9

a section of the inking unit with two opposing rollers and an associated diagram of the force vectors;

Fig. 10

a section of the inking unit with a parked roller and an associated diagram of the force vectors;

Fig. 11

a section of the inking unit with a staff employed against two rollers and a representation of the radial forces of the actuators;

Fig. 12

a third embodiment of a roller assembly with two independently engageable against a third roller and employees rolls;

Fig. 13

A fourth embodiment of an inking in schematically illustrated side view.

1 shows a device 20 for adjusting the contact pressure between a first Roller 21 and a second roller 22 are shown. The roller 21 can with the ends of their Axis 23 releasably attached to a provided on the device 20 quick release 24th be attached. Such quick fasteners are known from the prior art and have a semi-circular bearing shell into which the ends of the axis 23rd can be inserted. By attachment of an upper not shown in Fig. 1 Bearing shell then the axis 23 can be fixed to the quick release 24.

The device 20 is essentially composed of a frame holder 26 and a Roll holder 27 constructed, the relative to each other in a plane that is perpendicular extends to the drawing plane, can be moved against each other. Of the Frame holder 26 is made of a base plate 28, for example by means of a Swivel arm can be pivotally attached to the frame of a printing press, and a sleeve body 29 constructed. On the side facing the roller 21 has the Sleeve body 29 a recess 31 into which a cylindrical portion 32 of the Roller holder 27 engages. The inner diameter of the recess 31 and the Outer diameter of the section 32 is chosen so that a in the Basic position circular cylindrical gap 33 with a gap width of for example 1 mm to 10 mm, preferably 2 mm forms. Through the gap 33, the maximum adjustment range for adjusting the roller holder 27 relative to the frame holder 26 defined.

To realize the required in the setting of the roller 21 actuating movements can or the desired contact pressure between the roller 21 and the roller 22nd to be able to apply are distributed in the gap 33 over the circumference preferably total four z. B. formed in the manner of pressure hoses 34 actuators 34, of which in Fig. 1 only two are shown in section, arranged. About not shown in Fig. 1 Feed lines 48 (see FIG. 4) can be formed by the walls of the actuators 34 Pressure chambers 36 are pressurized. Depending on the particular Pressure conditions in the four actuators 34 acts on the roll holder 27 a resulting force, so that by appropriate control of the pressure in the actuators 34, the roller 21 is pressed against the roller 22 with the desired contact pressure can be. Because the air cushion pressurized in the actuators 34 is compressible is, mechanical disturbances can be caused by the resulting spring action be intercepted.

For fixing the roller holder 27 relative to the frame holder 26 are on the roll holder 27 slat elements 37 attached, which are fastened to the sleeve body 29 Lamella elements 38 are arranged to mesh to form a plate pack. For preferably frictional clamping of the lamellar elements 37; 38 formed lamellar packets is provided in cross-section T-shaped punch 39, whose circular punch head 40 with an annular flange 41 on outermost plate element 37 or 38 of the disk set comes to rest. At the opposite end of the punch 39, a pressure plate 42 is fixed to the Spring force of a spring element 43 designed in the manner of a disc spring package 43 acts. The spring element 43 is biased between the pressure plate 42 and the Sleeve body 29 mounted so that the of the lamellar elements 37; 38 educated Disk pack by the spring force from the punch 39 on the lamellar elements 37; 38 is being transmitted.

For adjusting the roller holder 27 relative to the frame holder 26, in particular during Adjusting the contact pressure between the rollers 21 and 22, the must of the Lamellar elements 37; 38 and the punch 39 and the pressure plate 42 formed Fixing device to be solved. For this purpose, a pressure connection 44 is in the base plate 28 provided by a pressure chamber 46 between the pressure plate 42 and the Base plate 28 with a pressure medium, such as compressed air are applied can. As soon as the pressure acting on the pressure plate 42 air pressure, the spring force of Spring element 43 exceeds the punch 39 so far from the outermost Slat element 37 and 38 lifted, that this no longer frictionally clamped are and can be moved relative to each other.

The adjustment of the contact pressure between the rollers 21 and 22 takes place, for example in the following way.

First, the pressure chamber 46 is subjected to a sufficient pressure, so that the lamellar elements 37; 38 are no longer frictionally clamped. Subsequently, the actuators 34 are each acted upon with just enough pressure that the desired contact pressure between the rollers 21 and 22 and between the Roller 21 and further, not shown in FIG. 1 rollers and forms a Contact strip of the desired width leads. Once the right attitude with the desired contact pressure between the rollers 21 and 22 is found, the Pressure chamber 46 is depressurized, whereby the punch 39, the blade elements 37; 38 clamped together, so that the roller holder 27 relative to the frame holder 26 in the desired position is fixed. Finally, the actuators 34 are depressurized. Independently from the method described here, the preferred frictionally trained Fixing device alternatively or additionally also have elements that engage positively.

In Fig. 2 and Fig. 3, the operating principle of the device 20 in the required Actuating shown in a schematic way.

Fig. 2 shows the frame holder 26 with the recess 31 and the engaging therein Section 32 of the roller holder 27. By the choice of dimensions is between the Frame holder 26 and the portion 32 of the roller holder 27, a gap 33 formed in to those in Fig. 2 and 3 only schematically indicated by force arrows actuators 34th are arranged. The possible adjusting movements between the frame holder 26 and the roller holder 27 are by a set plane, which in the illustration of FIG. 2 and 3 in the plane of the drawing, defined, wherein the adjustment range of Adjusting movements is limited by the width of the gap 33.

As shown by way of example in FIG. 3, the roll holder 27 and, as a result, the attached thereto roller 21 are laterally offset relative to the frame holder 26, which by a corresponding control of the actuators 34 and the consequent Force effect on the section 32 is effected. Once the desired position of Roller holder 27 is found relative to the frame holder 26, which can be from the Lamellar elements 37; 38 and the punch 39 and the pressure plate 42 formed Fixing device can be actuated so that the position is permanently fixed and the actuators 34 need not be driven further.

In Fig. 4, the device 20 without roll holder 27 in a perspective view shown. The sleeve body 29 is by means of four fastening screws 47 on the Roller holder 27 (see Fig. 5) attached. Between the sleeve body 29 of the Frame holder 26 and the roll holder 27, on its forward side the half-shell-shaped quick release 24 (see Fig. 5) is partially visible, are the four z. B. arranged in the manner of pressure hoses 34 actuators 34, the Via supply lines 48 can be acted upon with compressed air. By means of the pressure plate 42 the lamellar elements 37; 38 relaxed.

Fig. 5 shows the device 20 with the base plate 28, the frame holder 26, the Roller holder 27, the quick release 24, the mounting screws 47 and the Actuators 34 in a perspective view from the front. One recognizes the extraordinary compact design of the device 20, due to their total rotationally symmetrical design (apart from the base plate 28) a smaller Diameter than the roller 21 itself (see Fig. 1).

In Fig. 6, the section of an inking unit 51 with an adjustably mounted roller 52 and two frame fixedly mounted rollers 53; 54 is shown. The adjustable mounted Roller 52 is mounted with a device 20 in the machine frame, as shown in FIGS to 5 has been explained. This is shown in Fig. 6 by the air chambers 56 to 59 and 61 indicated schematically. The function of the pressure chambers 56 to 59 corresponds to Function of the pressure chambers 36 on the device 20. That is by loading resp. Venting of the pressure chambers 56 to 59, the adjustably mounted roller 52 in the Gap between the rollers 53 and 54 pushed in or out of the gap be moved out. The function of the pressure chamber 61 corresponds to the function of Pressure chamber 46 on the device 20, so that by ventilation of the Pressure chamber 61, the adjustably mounted roller 52 in position relative to the fixed frame mounted rollers 53 and 54 can be fixed.

For adjusting the contact pressure in the roller strip 62; 63 between the rollers 53 and 54 on the one hand and the adjustably mounted roller 52 on the other hand, can be as follows be proceeded.

First, an air pressure is applied in each of the pressure chambers 56 and 57, which in the Resulting in a setting force on the roller 52 in the desired size and direction acts. Subsequently, the pressure chamber 61 is filled with compressed air, so as to fix the roller 52 to solve. Below that of the pressure chambers 57 and 56 applied Contact pressure, the roller 52 is then pressed against the rollers 53 and 54. By Change in the pressure in the pressure chambers 56 and 57, the contact pressure in the Roll strips 62 and 63 are set independently variable. As soon as the contact pressure in the roller strips 62 and 63 corresponds to the nominal values, the Pressure chamber 61 vented by depressurizing and thereby the adjustably mounted Roller 52 is fixed relative to rollers 53 and 54.

As a result, the contact pressure in the roller strips 62; 63 remotely controlled to be changed. The readjustment of the roller strips 62; 63 is also running Production possible because the color transfer is not interrupted. When readjusting During ongoing production, only the pressure chamber 61 to solve the Fixing device ventilated and the pressure in the pressure chambers 56; 57 changed as far as until the desired contact pressures on the roller strip 62; 63 result.

The fixation of the setting by venting the pressure chamber 61 is not mandatory required. If, during production, the set pressures in the pressure chambers 56 and 57, the fixation can be made by venting the pressure chamber 61 omitted. The roller 52 is resiliently pressed in this case against the rollers 53 and 54 and can, for example, evade backwards in the event of imbalances and vibrations. However, when not fixing the roller 52, make sure that the inking in the 51st occurring vibrations do not exceed a permissible level.

In order to interrupt the color promotion in the inking unit 51, d. H. to turn off the color, the pressure chambers 56 and 57 are vented and the pressure chambers 58 and 59 vented. Once then the fixation of the roller 52 is released by venting the pressure chamber 61, The roller 52 is moved out of the gap between the rollers 53 and 54. If no contact between the roller 52 and the rollers 53 and 54 is, is the pressure chamber 61 vented again and thereby the roller 52 in the parked Position fixed. As a result, it is thereby possible, the roller 52 even while running Stop production without removing the roller 52. To make mistakes by sticking the Roller 52 when adjusting the contact pressures in the roller strip 62; 63 to avoid can the roller 52 before adjusting the contact pressures by venting the pressure chambers 56 and 57 are also turned off in the manner described first.

Of course, it is by appropriate control of the pressure chambers 56 to 59 also possible to turn off the roller 52 only from one of the rollers 53 and 54, respectively. Become For example, the pressure chambers 57 and 58 ventilated and the fixation of the roller 52nd can be achieved, that the roller 52 is turned off by the roller 53 but at the same time still in contact with the roller 54 remains.

Fig. 7 illustrates an inking unit 66, with the ink from a roller 67, z. B. one Anilox roller 67 on a cylinder 68, z. B. a form cylinder 68 is transferable. To are in the inking unit 66, an upper roller train 69 with two rollers 71; 72, z. Two Ink transfer rollers 71; 72 and a roller 73, z. B. an inking roller 73 and a lower roller 74 with also two rollers 76 and 77, z. Two Ink transfer rollers 76 and 77 and an inking roller 78 is provided. The Ink transfer rollers 71; 72; 76; 77 and the inking rollers 73; 78 are in a frame 79 mounted adjustable. To adjust these rollers 71; 72; 76; 77, 73; 78 come z. B. devices are used, which correspond to the device 20 and each preferably four pressure chambers for adjusting the contact pressures or for Shutdown of the rollers 71; 72; 76; 77, 73; 78.

To adjust the contact pressures in the inking unit 66 may proceed differently become. After a first process variant, the contact pressures in the Roll strip of upper roller 69 and lower roller 74 set in succession. Ie. First, the fixation of the inking roller 73rd dissolved and by aeration of the corresponding pressure chambers of the contact pressure in the Roll strip to the anilox roller 67 and the forme cylinder 68 adjusted. In parallel can the contact pressure between the inking roller 78 of the lower roller 74th and the anilox roller 67 and the forme cylinder 68 are adjusted. After adjustment the inking rollers 73 and 78 are fixed and then the Contact pressure between the ink transfer roller 72 and the inking roller 73rd or the ink transfer roller 77 and the inking roller 78 by aeration of the set appropriate pressure chambers. As soon as the ink transfer rollers 72nd and 77 are fixed again, the ink transfer rollers 72 and 76 are last through Ventilation of the pressure chambers adjusted, so that in the roll strip between the ink transfer rollers 71 and 76 on the one hand and the anilox roller 67 and the Farbübertragungswalzen 72 and 77 on the other hand, the desired contact pressures result. Are the ink transfer rollers 71 and 76 fixed again, the entire Inking unit 66 completely adjusted.

Are the individual successively arranged ink transfer rollers 71; 72; 76; 77 or inking rollers 73; 78 in the rollers 69 and 74 successively set, thereby the device technical effort for the realization considerably reduced, there to adjust the individual rollers 71; 72; 76; 77, 73; 78 each the same adjustment can be used. In the realization of Adjustments of the individual rollers 71; 72; 76; 77, 73; 78 by aeration of Pressure chambers, it is sufficient, for example, to provide only two proportional valves, as these successively for the setting of the individual rollers 71; 72; 76; 77, 73; 78 can be used. In addition, by adjusting the rollers 71; 72; 76; 77, 73; 78 successively ensures that the setting of the rollers 71; 72; 76; 77, 73; 78 do not influence each other. However, the setting requires the individual rollers 71; 72; 76; 77, 73; 78 successively a relatively long response time.

According to a second alternative method, the ink transfer rollers 71; 72; 76; 77 and the inking rollers 73; 78 all set at the same time. Ie. the Pressure chambers on the individual ink transfer rollers 71; 72; 76; 77 or Inking rollers 73; 78 are all at the same time with appropriate air pressures applied. It should be noted, however, that the contact pressure between the individual rollers 71; 72; 76; 77, 73; 78 also on the front or behind in the compactor 69 and 74 arranged rollers 71; 72; 76; 77, 73; 78, so that the Adjustment of the individual rollers 71; 72; 76; 77, 73; 78 influenced each other.

When choosing the air pressures in the individual pressure chambers to adjust the different rollers 71; 72; 76; 77, 73; 78 are therefore on the individual rollers 71; 72; 76; 77, 73; Vectorially adding 78 acting force vectors.

In Fig. 8, such an addition of the force vectors is exemplary of the Ink transfer roller 71 shown. On the ink transfer roller 71 act next the z. B. by the force of gravity force vector 80 of the force vector 81 and 82, the z. B. correspond to the force acting in the roller strip contact forces 81 and 82, the at given contact pressures of the ink transfer roller 71 to the anilox roller 67 and the ink transfer roller 72. Are the weight 80 and the Compressive forces 81 and 82 added vectorially, resulting in a force difference by Adjustment of the air pressure in the air chambers 83 and 84 are intercepted such must be that on the ink transfer roller 71 in the result no resulting outer Power acts more. 8, the force vector 86 applied by the pressure chamber 83 is shown in FIG. z. B. the adjusting force 86, and the force applied by the pressure chamber 84 force vector 87, z. B. the adjustment force 87, vectorially applied. It can be seen that the force vectors 80; 81; 82; 86; 87 result in a closed power flow and thus in the result on Farbübertragungswalze 71 no external force acts more. For each one of them adjustably mounted rollers 71; 72; 76; 77, 73; 78 must be at the same time setting the contact pressures for all rollers 71; 72; 76; 77, 73; 78 such a closed Force flow are set up to influence the different force sizes to be able to consider each other.

A method of adjusting one of a first roller 71 to a second roller 72 and at least one third roller 67 applied in a printing machine pressing force 81; 82, wherein the first roller 71 is held in a roll holder 27, which in turn in a frame holder 26 is mounted, wherein at least two actuators 83; 84; 93; 94 are arranged between the roller holder 27 and the frame holder 26, wherein the Actuators 83; 84; 93; 94 in its actuated operating state a radially on the Roll holder 27 directed force 89; 91; 96; 97, ie includes as Procedural steps that a resultant 88 as the vector sum of all after the Adjustment at the first roller 71 attacking forces 80; 81; 82 is formed that those actuators 83; 84; 93; 94 are actuated by a control signal whose radial Force 89; 91; 96; 97 of the resultant 88 counteracts and that the radial force 89; 91; 96; 97 of actuated actuators 83; 84; 93; 94 to an amount 86; 92 is set, until the vector sum of the resultant 88 corresponds. This procedure goes away from that at the beginning of the process, at least a part of the first roller 71 attacking forces 81; 82 are not yet real, but are intended target values, because at least the contact forces 81; 82 only through the proposed procedure to set a desired value. The resultant as a vector sum resultant 88 is thus a setpoint specification, on the radial forces 89; 91; 96; 97 in vectorial Addition can be set.

In the case of parking a first roller 71 of at least one second roller 67; 72 in a printing machine, wherein the first roller 71 is held in a roller holder 27, which in turn is mounted in a frame holder 26, wherein at least two actuators 83; 84; 93; 94 are disposed between the roll holder 27 and the frame holder 26, wherein the actuators 83; 84; 93; 94 in its actuated operating state a radially on the Roll holder 27 directed force 89; 91; 96; 97 exert, results in an analogous manner Method, which is characterized in that a resultant 88 as a vector sum all forces 80 acting on the first roller 71 after parking; 81; 82 formed is that at least one actuator 83; 84; 93; 94 is actuated by a control signal, its radial force 89; 91; 96; 97 of the resultant 88 counteracts and that the radial force 89; 91; 96; 97 of the actuated actuator 83; 84; 93; 94 to an amount 86; 92 is set, which corresponds to the vector sum of the resultant 88.

In both methods described above, the weight force 80 of the first roller 71 preferably included in the vector sum to form the resultant 88 because of it Contribution in the vector sum i. d. R. is not negligible. If only the Weight force 80 of the first roller 71 forms the resultant 88 because z. For example, none Pressing forces on the first roller 71 act, the radial force 89; 91; 96; 97 of the actuated actuators 83; 94 at least temporarily to an amount 86; 98 set that whose vector sum is greater than the amount during the shutdown Resultant 88. This step serves to stop the first roller 71, d. H. the application of a force that causes the first roller 71 to move. If the first roller 71 has reached a certain target position is for the resultant 88 counteracting force only an amount required, the first roller 71 in a hibernation holds. In the preferred embodiment, therefore, the actuated actuators 83; 84; 93; 94, the roller holder 27 in the frame holder 26, wherein the Actuators 83; 84; 93; 94 the center of the roll holder 27 z. B. up to 15 mm eccentric from the center of the frame age 26 can move. It can the Roller holder 27 in the frame holder 26 be eccentrically displaced so that the first Roller 71 and the second roller 72 out of contact, this shift by the operation of only a single actuator 83; 84; 93; 94 caused can, which is arranged between the roller holder 27 and the frame holder 26. Between the roll holder 27 and the frame holder 26 may also at least one Be provided spring element against which the actuators 83; 84; 93; 94 the Roll holder 27 move in the frame holder 26 and which the roll holder 27 in through the actuators 83; 84; 93; 94 unloaded operating state to a starting position resets.

Preferably, only those are used to practice the method described above Actuators 83; 84; 93; 94 actuated, the radial force 89; 91; 96; 97 a positive amount 86; 92; 98 against the resultant 88. It is advantageous if the roll holder 27 in the frame holder 26 z. B. in the manner described in connection with FIG. 1 is fixed after the vector sum of the amount 86; 92; 98 set radial forces 89; 91; 96; 97 of the resultant 88 corresponds.

A device 20 for adjusting one of a first roller 71 to a second one Roller 72 and at least one third roller 67 exerted in a printing press Pressing force 81; 82 and / or for turning on / off of a first roller 71 to or from a second roller 72 and at least one third roller 67 and thus to Implementation of the method described above, wherein the first roller 71 in a Roll holder 27 is held, which in turn is mounted in a frame holder 26, wherein at least two actuators 83; 84; 93; 94 between the roller holder 27 and the Frame holder 26 are arranged, wherein the actuators 83; 84; 93; 94 in their pressed Operating state, a radially directed onto the roller holder 27 force 89; 91; 96; 97 exercise, z. B. be characterized in that at least one radial force 89; 91; 96; 97 of actuated by a control signal actuators 83; 84; 93; 94 with a at the first roller 71 engaging force 80; 81; 82 is aligned. Another special Arrangement for the aforementioned device 20 results when two by a Control signal actuated actuators 83; 84; 93; 94 are arranged such that the amount 86; 92 of the radial force 89; 91; 96; 97 is set equal and one Vector sum of these amounts 86; 92 counteracts a resultant 88, wherein the Resulting 88 in the manner already mentioned as a vector sum from all at the first roller 71 acting forces 80; 81; 82 is formed.

As can be seen from FIG. 8, the radial forces 89; 91; 96; 97 of the actuators 83; 84; 93; 94 an opening angle α with each other. The radial forces 89; 91; 96; 97 must the amounts of force 86; 92, which in vector addition to the resultant 88 amount equal. The opening angle α between the radial forces 89; 91; 96; 97 that of the actuators 83; 84; 93; 94 after their operation, d. H. after their admission are exerted with a pressure medium, is also found between the radial Forces 89; 91; 96; 97 rectified force vectors 86; 92. Depending on the arrangement of Actuators 83; 84; 93; 94 result in the diagram of the force vectors 86; 88; 92 between the resultant 88 and the force vectors 86; 92 different opening angles γ1; γ2, which, however, should be at least 15 ° to produce favorable force ratios.

It is thus advantageous, the angular position of the radial forces 89; 91; 96; 97 of the actuators 83; 84; 93; 94 to be chosen so that the radial force 89; 91; 96; 97 out of two by one Control signal actuated actuators 83; 84; 93; 94 is set so that each of these radial forces 89; 91; 96; 97 an amount 86; 92 of at least 30%, preferably 50 %, in particular 70% of a counteracting resultant 88, wherein the Resultant 88, in turn, as a vector sum of all at the first roller 71 attacking forces 80; 81; 82 is formed. Otherwise, one of the two involved Actuators 83; 84; 93; 94 an excessively high proportion of force 86; 92 to raise whereas the other one would hardly be used. But because those of the actors 83; 84; 93; 94 applied forces are practically limited in the practical implementation are Such arrangements advantageous in which the participating actuators 83; 84; 93; 94 among the Given constructive conditions contribute as much as possible, what in Fig. 8 z. B. is indicated by the two dashed lines force vectors, the in this example, both account for 70% of the counteracting resultant 88 exhibit. In FIG. 8, the opening angle α between the radial forces 89; 91; 96; 97 selected as an example to 90 °, so that the orthogonal to each other Force vectors 86; 92 and the resultant 88 always a right triangle form with each other, wherein the apex of the between the radial forces 89; 91; 96; 97 existing opening angle α depending on the distribution of the radial forces 89; 91; 96; 97 on a broken line in Fig. 8 drawn arc curve moves. Other advantageous settings for the opening angle α can be between 45 ° and 135 °, in particular at 90 ° and also at 120 °. The opening angle α, the radial forces 89; 91; 96; 97 of actuated actuators 83; 84; 93; 94 form with each other is in many roller arrangements unequal to an opening angle β, which of the first Roller 71 applied to the second roller 72 pressing force 82 with that of the first Roller 71 on the third roller 67 exerted pressing force 81 forms, wherein the Opening angle β z. B. between 30 ° and 180 °, but preferably between 60 ° and 120 °, in particular at about 90 °.

In a preferred embodiment of the device 20, the actuators 83; 84; 93; 94 in or formed on a wall of the frame holder 27, preferably as in or on a wall of the frame holder 26 or the roll holder 27th attached, side-limited pressure chambers (see Fig .. 4), wherein the pressure chambers at perform a pressurization directed to the roll holder 27 radial stroke, the z. B. may be up to 10 mm.

It is advantageous if the frame holder 26 connections for leads to Pressure medium supply for the hollow body or pressure chambers has (Figures 4 and 5). At least the frame holder 26 is advantageously designed to be rotationally symmetrical, because then no special alignment to a frame wall 79 (Fig. 7). The pressure chambers may have a membrane, wherein between the pressure chambers at least one integrally formed on the frame holder 27 web is formed (Fig. 4), with which the membrane can be connected. In the constructive Embodiment either covers a self-contained annular membrane all Pressure chambers from or for each pressure chamber is an associated membrane intended. The latter embodiment is shown in FIG. 4. The membrane is preferably inserted into an inserted into the frame holder 27 groove, glued or trapped. In the device 20 advantageously three or four actuators 83; 84; 93; 94 or pressure chambers may be provided along the circumference of the Roller holder 27 are preferably arranged equidistantly spaced.

FIG. 9 shows a similar arrangement to FIG. 8, but with the difference that here according to the illustrated section of the inking unit two rollers 67; 71 are employed against each other. An associated graph of force vectors 80; 81; 86; 88; 92 is drawn, after which the actuators 83; 84; 93; 94 the required forces 86; 92 apply. In Fig. 10 with respect to the same inking unit, the roller 71 of their adjacent rollers 67; 72 completely turned off. Again, one clarifies associated diagram of the force vectors 80; 86; 98 the effective power relations, after which to achieve this operating condition for the roller assembly with the Roller 71 acting actuators 83; 94 are to be operated.

Fig. 11 shows a section of the inking unit with a against two rollers 67; 72 Employed roller 71 and a representation of the radial forces 89; 91; 96; 97 of each actuators 83 arranged offset by 90 ° from each other; 84; 93; 94. With this arrangement are the contact forces 81; 82 and the applied to the roller 71 to compensate for the attacking weight force 80. With such an arrangement of actuators 83; 84; 93; 94, a displacement of the roller 71 in any direction in the Plane, which is here equal to the plane of the drawing to be made. Some Devices 20 for adjusting one of a first roller 71 to at least one second roller 72 applied in a printing machine pressing force 82 and / or on / off a first roller 71 to or from at least one second roller 72 like not all of these illustrated actuators 83; 84; 93; 94, but only at least two actuators 83; 84, which operated in their, d. H. pressure medium Operating state, a radial directed into the first roller 71 force 89; 91; 96; 97 exercise, because in the opposite direction of the radial force 89; 91; 96; 97 z. B. preferably biased spring element is provided.

A third embodiment of a roller arrangement is shown in FIG. 12. she relates to a device 20 for adjusting a contact pressure 81; 82, the first roller 71 and a second roller 72 on at least one third roller 67 in a printing machine exercise, and / or for turning on / off a first roller 71 and at least one second roller 72 to and from a third roller 67, wherein for the first roller 71 and the second roller 72 actuators 83; 84; 93; 94 are provided in their actuated Operating state, a radial force 89; 91; 96; 97 exercise, each in the with them in Operatively connected roller 71; 72 is directed. This device 20 is distinguished characterized in that an opening angle α1; α2 between the two actuated actuators 83; 84; 93; 94 on the same roller 71; 72 directed radial forces 89; 91; 96; 97 at the first roller 71 and the second roller 72 is the same. This form in the first roll 71 and the second roller 72, the radial forces 89; 91; 96; 97 of actuated actuators 83; 84; 93; 94 each have an opening angle α1; α2 with each other, which is not equal to one Opening angle β is that exerted by the first roller 71 on the third roller 67th Pressing force 82 with the force exerted by the second roller 72 on the third roller 67th Contact force 81 forms. As in the devices 20 described above, the Actuators 83; 84; 93; 94 its radial force 89; 91; 96; 97 actuated by a control signal exercise, d. H. the actuators 83; 84; 93; 94 are z. B. from one of the printing press assigned control station operable. The opening angle α; α1; α2, the radial forces 89; 91; 96; 97 of actuated actuators 83; 84; 93; 94 form with each other, z. B. between 45 ° and 135 °, preferably between 90 ° and 120 °. Of the Opening angle β, the one exerted by the first roller 71 on the third roller 67th Pressing force 82 with the force exerted by the second roller 72 on the third roller 67th Contact force 81 forms, z. B. between 30 ° and 180 °, preferably 60 ° to 120 °, in particular 90 °.

Also in this device 20 with two independently of each other to a third roller 67th adjustable rollers 71; 72, the first roller 71 and / or the second roller 72 each be held in a roll holder 27, which in turn in a frame holder 26th is stored, wherein the actuators 83; 84; 93; 94 preferably between the frame holder 26 and the roll holder 27 are arranged. The frame holder 26 is advantageously formed as a housing in which the actuators 83; 84; 93; 94 are arranged (see. Fig. 4 or 5), wherein the housing is formed at least half-shelled. In turn it is recommended that the actuators 83; 84; 93; 94 as a pressurizable hollow body to train, the z. B. pneumatically actuated and preferably rodless is trained. It is advantageous that the hollow body or bodies at least partially from a Form elastomer material. Also in this roller assembly, the first roller 71 or the second roller 72 may be a roller of an inking unit or a dampening unit.

The inking unit 01 shown in FIG. 13 serves to apply ink to a printing ink Cylinder 02, z. B. a forme cylinder 02, in turn, the ink on a Blanket cylinder 03 transfers. A material web, not shown in FIG. 13, z. Legs Substrate web, for example, a paper web is between the Blanket cylinder 03 and a counter-pressure cylinder 04 performed and is by printed the contact with the blanket cylinder 03 with the desired printed image. To supply the moisture required in the transmission of the printed image is a Dampening unit 06 with a spraying device 07 and various rollers 08a; 08b; 08c; 08d, z. B. dampening rollers 08a; 08b; 08c; 08d provided.

In a trained as a color box 09 reservoir 09 is a certain amount a pasty ink 10 is stored. By using a Farbduktors 11 in In conjunction with a colorimeter 12, the ink 10 may be suitable be funded. A color film of a certain thickness is from the ink fountain roller 11 to a Subordinate roller 13, z. B. Film roller 13 transferred. By unrolling each adjacent lateral surfaces of the rollers 14; 15, z. B. ink transfer rollers 14; 15 and the respective downstream rollers 16; 17, z. B. Farbreibwalzen 16; 17 will be the Printing ink 10 then on two rollers 18; 19, z. B. two inking rollers 18; 19 transfer. The inking rollers 18; 19 in turn roll on the forme cylinder 02 and while doing the nachgeförderte printing ink 10 on the forme cylinder 02.

The forme cylinder 02, the Farbreibwalzen 16; 17, the film roller 13 and the ink fountain roller 11 are all firmly mounted in a machine frame, not shown in Fig. 13. This means for the purposes of this invention that the set pressure between the individual Rollers 16; 17; 13 or the cylinder 02 not by adjusting these rollers 16; 17; 13 or cylinders 02 is variable. The ink rubbing rollers 16; 17 can but Of course, be moved relative to the machine frame in the axial direction to the Color on the adjacent ink transfer rollers 14 and 15 and inking rollers 18 or 19 to rub. The "solid" rollers are so achsabstandsunveränderbar.

The ink transfer rollers 14 and 15 and inking rollers 18 and 19 are respectively with two devices 20 on the opposite sides of the machine frame stored, so that between the rollers 16; 17; 13 and the cylinder 02 in the compactor the inking unit 01 by actuation of these devices 20 an adjustment of Ink transfer rollers 14 and 15 and inking rollers 18 and 19 is possible. Of the Contact pressure in the roller strip between the ink transfer rollers 14 and 15 respectively and inking rollers 18 and 19 on the one hand and the forme cylinder 02, the Paint rubbing rollers 16; 17 and the film roller 13 and the ink fountain roller 11 on the other hand can be set one after the other. Especially fast is the setting of the Farbwerks 01 thereby realizable that the contact pressure in the roll strips everywhere is set at the same time. For this purpose, the devices 20, in which the Ink transfer rollers 14 and 15 and inking rollers 18 and 19 are stored in the Essentially actuated at the same time. An influence of the contact pressure in the single roller strip is also with simultaneous operation of all devices 20 excluded because between the adjustably mounted ink transfer rollers 14th or 15 and inking rollers 18 and 19 each have a frame-mounted roller 16 or 17, namely the ink distributor 16 and 17, respectively.

Also on dampening unit 06 which are adjustably mounted with devices 20 Dampening rollers 08a and 08c between the frame-mounted dampening rollers 08b and 08d and the frame fixedly mounted forme cylinder 02 arranged.

LIST OF REFERENCE NUMBERS

01

inking

02

Cylinder, forme cylinder

03

Blanket cylinder

04

Impression cylinder

05

-

06

dampening

07

spraying

08

-

09

Reservoir, color box

10

printing ink

11

ink fountain roller

12

colorimeter

13

Roller, film roller

14

Roller, ink transfer roller

15

Roller, ink transfer roller

16

Roller, inking roller

17

Roller, inking roller

18

Roller, inking roller

19

Roller, inking roller

20

contraption

21

roller

22

roller

23

axis

24

quick release

25

-

26

frame holder

27

roller holder

28

Base plate (26)

29

Sleeve body (26)

30

-

31

Recess (26)

32

Section (27)

33

gap

34

Actuator, pressure hose

35

-

36

pressure chamber

37

Slat element (27)

38

Slat element (26)

39

stamp

40

ram head

41

Flange (40)

42

printing plate

43

Spring element, plate spring package

44

pressure connection

45

-

46

pressure chamber

47

fixing screw

48

supply

49

-

50

-

51

inking

52

Roller, adjustable

53

Roller, fixed to the frame

54

Roller, fixed to the frame

55

-

56

pressure chamber

57

pressure chamber

58

pressure chamber

59

pressure chamber

60

-

61

pressure chamber

62

roller strip

63

roller strip

64

-

65

-

66

inking

67

Roller, anilox roller

68

Cylinder, forme cylinder

69

Compactor, upper

70

-

71

Roller, ink transfer roller

72

Roller, ink transfer roller

73

Roller, inking roller

74

Compactor, lower

75

-

76

Roller, ink transfer roller

77

Roller, ink transfer roller

78

Roller, inking roller

79

frame

80

Force vector, weight force

81

Force vector, contact pressure

82

Force vector, contact pressure

83

actuator; pressure chamber

84

actuator; pressure chamber

85

-

86

Force vector, adjustment force

87

Force vector, adjustment force

88

resulting

89

radial force

90

-

91

radial force

92

Force vector, adjustment force

93

actuator; pressure chamber

94

actuator; pressure chamber

95

-

96

radial force

97

radial force

98

Force vector, adjustment force

08a

Roller, dampening roller

08b

Roller, dampening roller

08c

Roller, dampening roller

08d

Roller, dampening roller

α, α1, α2

Opening angle between radial forces

β

Opening angle between contact forces

γ1, γ2

Opening angle between a radial force and a resultant

Claims (14)

An apparatus for adjusting a pressing force (81, 82), comprising a first roller (08a; 15; 18; 71) and a second roller (08c; 14; 19; 72) on at least one third roller (02; 08b; 16; 17 67) in a printing press, and / or for turning on / off a first roller (08a; 15; 18; 71) and at least one second roller (08c; 14; 19; 72) to or from a third roller (02; 08b; 16; 17; 67), wherein the first roller (08a; 15; 18; 71) and the second roller (08c; 14; 19; 72) each have at least two actuators (83; 84; 93; 94 ), wherein the actuators (83; 84; 93; 94) exert a radial force (89; 91; 96; 97) in their actuated operating state, wherein the radial force (89; 91; 96; 97) respectively in FIG roller (08a; 08c; 14; 15; 18; 19; 71; 72) operatively connected thereto, wherein the radial forces (89; 91; 96; 97) of two actuated actuators (83; 84; 93; 94 ) of the same roller (08a; 08c; 14; 15; 18; 19; 71; 72) form an opening angle (α1; α2) with each other, w obei the opening angle (α1; α2) between the two actuated actuators (83; 84; 93; 94) on the same roller (08a; 08c; 14; 15; 18; 19; 71; 72) directed radial forces (89; 91; 96; 97) is equal to the first roller (08a; 15; 18; 71) and the second roller (08c; 14; 19; 72), characterized in that a vector sum is applied to the same roller (08a; 08c; 14; 15; 18; 19) 71; 72) directed radial forces (89; 91; 96; 97) simultaneously actuated actuators (83; 84; 93; 94) the pressing force (81; 82) on the third roller (02; 08b; 16; 17; 67 The first roller (08a; 15; 18; 71) and the second roller (08c; 14; 19; 72) are held in a roller holder (27), which in turn is mounted in a frame holder (26) the frame holder (26) is formed as a housing in which the actuators (83; 84; 93; 94) are arranged. An apparatus for adjusting a pressing force (81, 82), comprising a first roller (08a; 15; 18; 71) and a second roller (08c; 14; 19; 72) on at least one third roller (02; 08b; 16; 17 67) in a printing press, and / or for turning on / off a first roller (08a; 15; 18; 71) and at least one second roller (08c; 14; 19; 72) to or from a third roller (02; 08b; 16; 17; 67), wherein the first roller (08a; 15; 18; 71) and the second roller (08c; 14; 19; 72) each have at least two actuators (83; 84; 93; 94 ), wherein the actuators (83; 84; 93; 94) exert a radial force (89; 91; 96; 97) in their actuated operating state, wherein the radial force (89; 91; 96; 97) respectively in FIG roller (08a; 08c; 14; 15; 18; 19; 71; 72) operatively connected thereto, wherein the radial forces (89; 91; 96; 97) of two actuated actuators (83; 84; 93; 94 ) of the same roller (08a; 08c; 14; 15; 18; 19; 71; 72) form an opening angle (α1; α2) with each other, w obei this opening angle (α1; α2) is different from an opening angle (β) which the pressing force (82) exerted by the first roller (08a; 15; 18; 71) on the third roller (02; 08b; 16; 17; Forming roller (08c; 14; 19; 72) on the third roller (02; 08b; 16; 17; 67) applied pressing force (81), characterized in that a vector sum from on the same roller (08a; 08c; 14; 15 ; 18; 19; 71; 72) directed radial forces (89; 91; 96; 97) simultaneously actuated actuators (83; 84; 93; 94) the pressing force (81; 82) on the third roller (02; 08b; 17; 67), wherein the first roller (08a; 15; 18; 71) and the second roller (08c; 14; 19; 72) are held in a roller holder (27), which in turn is mounted in a frame holder (26). is mounted, wherein the frame holder (26) is formed as a housing in which the actuators (83; 84; 93; 94) are arranged. Device according to one of the preceding claims, characterized in that the actuators (83; 84; 93; 94), actuated by a control signal, exert a radial force (89; 91; 96; 97). Device according to one of the preceding claims, characterized in that each actuated actuator (83; 84; 93; 94) with its radial force (89; 91; 96; 97) at the same time for adjusting the pressing force (81; 82) and for stopping at least a first roller (08a; 08c; 14; 15; 18; 19; 52; 71; 73; 76; 78). Device according to claim 1 or 2, characterized in that the opening angle (α1; α2) which the radial forces (89; 91; 96; 97) of the actuated actuators (83; 84; 93; 94) form with each other is between 45 ° and 135 °. Device according to claim 2, characterized in that the opening angle (β) which the pressing force (81) exerted by the first roller (08a; 15; 18; 71) on the third roller (02; 08b; 16; 17; 67) exerts. with the pressure applied by the second roller (08c; 14; 19; 72) to the third roller (02; 08b; 16; 17; 67) is between 30 ° and 180 °. Device according to one of the preceding claims, characterized in that the housing is formed at least half-shelled. Apparatus according to claim 1 or 2, characterized in that the actuators (83; 84; 93; 94) are in each case designed as a hollow body which can be charged with pressure medium. Apparatus according to claim 8, characterized in that the hollow body is pneumatically actuated. Apparatus according to claim 8, characterized in that the hollow body is formed rodless. Apparatus according to claim 8, characterized in that the hollow body is at least partially formed of an elastomer material. Device according to one of the preceding claims, characterized in that the first roller (08a; 15; 18; 71) or the second roller (08c; 14; 19; 72) is a roller of an inking unit or a dampening unit. Device according to one of the preceding claims, characterized in that at least one of the rollers (08a, 08c; 14; 15; 18; 19; 71; 72) which can be engaged or disengaged is a roller co-operating with a forme cylinder (02) , Device according to one of the preceding claims, characterized in that all rollers (08a; 18; 19; 71; 72) cooperating with a forme cylinder (02) are switched on or off.

Images