EP0480879B2 - Device for infinitely varying the axial stroke of vibrating inking rollers - Google Patents

Description

The invention relates to a device on rotary printing presses for stepless adjustment the axial rubbing movement of friction rollers of inking and dampening units according to the generic term of claim 1. Devices of this type are known. For example, the DE-PS shows 38 14 927 such a device in which an eccentric pin on a rotating body is slidably arranged. The shift of the Eccentric pin is along a groove that perpendicular to the axis of rotation of the rotating body and runs through the center. Slidable in the groove embedded is a sliding block, which by means of a Clamping screw connected to the eccentric pin is. To adjust the distance of the Eccentric pin to the axis of rotation of the rotating body the clamping screw must be loosened, whereby the eccentric pin along the groove in the desired location can be moved. After that the clamping screw must be tightened again and thus is the eccentric pin with the rotating body again firmly connected.

With this facility is probably a stepless one Adjustment of the axial stroke of the friction rollers can be carried out, however, at least for each adjustment the drive of the rotating body from the machine drive uncouple to the rotary motion of the rotating body to stop. With the it is therefore not the aforementioned device possible during the production process Adjust the axial stroke of the friction rollers. The adjustment the axial stroke of the friction roller therefore requires a complex intervention in the linear actuator. An automatic adjustment or an adjustment from outside the machine is at this facility not possible.

Another device for adjusting the Axial strokes for the reciprocation of DE-OS 25 14 414 shows friction rollers. In one Rotation body is a rocker arm pivoted, the one via an actuator from its zero position is deflectable. At his the actuator A pivot pin is attached to the opposite end. A lever is articulated on this pivot pin, which the movement on the lever as a back and forth Movement to the friction rollers transmits. By deflecting the rocker arm from its zero position the pivot pin experiences a distance from the Axis of rotation of the rotating body and is thus in brought an eccentric situation.

With this facility it is probably possible Axial stroke for reciprocating the friction rollers to adjust while the machine is running, as a result of the forces generated by the It should be difficult to change lasers, bigger ones To achieve lifting movements.

Eine gattungsgemässe Verstellvorrichtung ist durch die Herstellung und Auslieferung einer COLORMAN N35-Druckmaschine der Firma MAN Roland Druckmaschinen AG in D-Augsburg im Juni 1976 bekannt geworden, bei welcher zum axialen Verstellen von Reibwalzen eine axial verschiebbare Hülse in Verbindung mit einem in der Hülse drehbar angeordneten exzentrischen Kurvenbolzen verwendet wird. Diese Konstruktion ermöglicht zwar eine Rotation des Kurvenbolzens, wenn die Hülse axial verschoben wird, aber nicht die Ausgestaltung des Schneckenrades als von aussen betätigbares Getriebe zum Verstellen eines Exzenterbolzens."

A generic adjustment device has become known from the manufacture and delivery of a COLORMAN N35 printing machine from MAN Roland Druckmaschinen AG in D-Augsburg in June 1976, in which an axially displaceable sleeve in conjunction with a sleeve rotatably arranged in the sleeve is used for the axial adjustment of friction rollers eccentric cam pin is used. Although this construction enables the cam pin to rotate when the sleeve is axially displaced, it does not allow the worm wheel to be designed as an externally operable gear for adjusting an eccentric pin. "

It is also desirable that with such back and forth Movements of friction rollers not only that Color can be rubbed in the production process can, but that these axial movements can also be used in the automatic washing process of the inking unit and dampening unit rollers. At It is well known that multi-page width printing machines can across the width of the printable Web page width printed with different colors will. To rub through the friction rollers to avoid having two different ones Colors of adjacent print zones are rubbed into each other and mixed, point the application rollers at the edge zones of the pages Punctures on. The axial stroke is during the printing process the rubbing movement of the friction rollers is less than that Width of the recesses of the application rollers to avoid that different color from one Zone transferred to the other through the friction rollers becomes. In the punctures and on the areas of the friction rollers that never go over in production Punctures of the application rollers will come out color accumulate naturally when changing color and production change are washed off got to. Now about the friction rollers and the application rollers being able to wash clean automatically is it required the axial stroke of the reciprocation can be enlarged so that it is larger is the width of the punctures on the applicator rollers, so that all of the paint residue accumulates the rubbing rollers are stripped. To be an efficient one To ensure automatic washing, it must be possible to the axial stroke of the friction rollers The easiest way to adjust the wash stroke size to be able to.

These additional requirements for the adjustment device the axial stroke of friction rollers are through the two devices mentioned not feasible. The object of the invention is now in creating a device with which it is possible the axial rubbing movement of friction rollers for inking and dampening units steplessly while the machine is running from To be able to adjust by hand or automatically, that the adjustable maximum stroke, which for automatic washing of the inking and dampening rollers is used, is larger than that largest stroke required for rubbing during of the production process, creating an efficient Washing the rollers when changing production is achievable.

According to the invention, the object is achieved by the in the labeling of the claim 1 specified characteristics. Training the invention emerge from the subclaims.

The adjustment of the eccentric pin by Twisting of the eccentric bolt is done advantageously Way via one with internal teeth and provided with helical teeth on the outside Sleeve coaxial on the rotating housing is rotatably mounted. The twist of this sleeve with respect to the housing is done in a simple manner by shifting a helical gear having gear, the outside of the housing on one to the axis of rotation of the housing parallel axis is arranged. This helical gear is over one with one on the toothing attached to the housing engages stationary gear, but non-rotatable connected, making the helical Gear with respect to the housing its rotational position does not change. By moving this helical gear Gear along the helical teeth the sleeve, the sleeve becomes relative to the housing twisted. This twisting movement is via an im Housing arranged like a planet gear, another Transfer the gear to the eccentric bolt, whereby this is twisted.

The displacement of this helical gear Gear is advantageously done with the help of a pneumatic actuable piston. A final position of the Piston specified by a fixed stop is correct with the wash stroke position of the eccentric pin match. The adjustment of the stroke done by moving the pneumatic actuable piston away from the maximum stroke position against an adjustable stop. That attack can be done manually or automatically in known Way to be adjusted.

Another advantageous embodiment of the invention consists of two eccentric bolts in the housing are arranged the same or different Distances from the axis of rotation of the Have housing. With this arrangement reached, an eccentric pin on both sides of the housing is available, one of which is a movement for axially going back and forth of two Friction rollers can be removed. The axial The stroke movement of these two friction rollers is at different distances between the eccentric bolts from the axis of rotation of the housing because of the different Eccentricities of the eccentric pins different. So that the axial lifting movements the two distribution rollers are not in phase, are the two eccentric pins around each other 90 ° out of phase.

Such eccentric drives result at the reversal points of the load change motion. It should be avoided that these load changes and the resulting impact stress in the present inventive Adjustment device of the toothing of the adjustment elements must be included. That's why are the two eccentric bolts each on the Provided with a conical bearing surface on the outside, which with appropriately shaped bearings form the slide bearing housing. Both Eccentric bolts are pressed into the corresponding conical plain bearing pressed. Of the Angle of the plain bearing cone is in relation to the Spring force, with which with eccentric bolts in the corresponding slide bearings are pressed, adjusted so that the load changes that occur when driving arise for the stroke movements of the friction rollers, due to the adhesion of the conical sliding surfaces transferred to the gears, but that static friction when adjusting the eccentric bolts overcome without excessive effort and the eccentric bolts are turned can.

The storage of the Housing with the integrated eccentric bolt (s) in the press so that the axis of rotation the housing at right angles to the axes of rotation the grinder is stopped. This can the respective eccentric pin directly into a sliding block, the known on the shaft of the friction roller Is appropriate to intervene. If the housing is equipped with two eccentric bolts, it can be placed between two friction roller shafts be that through the two-sided arrangement Eccentric pin two friction rollers at the same time can be moved axially back and forth without that additional elements for motion transmission required are. This will make it easy and space-saving design achieved.

The invention is based on the Drawing described in more detail using a sample.

Fig. 1

einen Längsschnitt durch das rotierend antreibbare Gehäuse mit einem Exzenterbolzen,

Fig. 2

einen Längsschnitt durch das rotierend antreibbare Gehäuse mit zwei Exzenterbolzen,

Fig. 3

einen Querschnitt durch das rotierend antreibbare Gehäuse entlang Linie III-III nach Fig. 1 und 2,

Fig. 4

eine räumliche Darstellung der Verstelleinrichtung in der Waschhubstellung,

Fig. 5

eine räumliche Darstellung der Verstelleinrichtung, bei der sich der Exzenterbolzen in der Nulllage befindet,

Fig. 6

einen Längsschnitt durch die Vorrichtung zum axialen Verschieben des schräg verzahnten Zahnrades,

Fig. 7

eine Darstellung der geometrischen Anordnung der Exzenterzapfen und der Exzenterbolzen bezüglich der Drehachse des Gehäuses,

Fig. 8

schematisch die Anordnung der Antriebsvorrichtung für die Verreibungsbewegung der Reibwalzen in einer Druckmaschine.

Show it:

Fig. 1

a longitudinal section through the rotatably drivable housing with an eccentric bolt,

Fig. 2

a longitudinal section through the rotatably drivable housing with two eccentric bolts,

Fig. 3

2 shows a cross section through the rotatably drivable housing along line III-III according to FIGS. 1 and 2,

Fig. 4

a spatial representation of the adjusting device in the washing stroke position,

Fig. 5

a spatial representation of the adjusting device, in which the eccentric pin is in the zero position,

Fig. 6

2 shows a longitudinal section through the device for axially displacing the helical toothed gear,

Fig. 7

a representation of the geometric arrangement of the eccentric pin and the eccentric pin with respect to the axis of rotation of the housing,

Fig. 8

schematically the arrangement of the drive device for the rubbing movement of the friction rollers in a printing press.

1 and 2 form part 1 and part 2, that are firmly connected, that rotating drivable housing 3. The rotating drivable Housing 3 is in supports 4 fixed to the machine frame or 5 rotatably supported by bearings 6 or 7. Non-rotatable with the rotating drivable housing 3, a gear 8 is connected. This gear 8 meshes with a drive gear, not shown, which is driven by the machine drive is what the rotating drivable housing is rotated about the axis of rotation 9. The rotatably drivable housing 3 is one enclosed coaxially arranged sleeve 10. This Sleeve 10 is rotatably driven Housing 3 through a bearing 11 or bearing surface 12 rotatably mounted. The sleeve 10 has on it Outside a helical toothing 13 and on her On the inside a degree toothing 14. In the rotatably drivable housing 3 is a recess 15 introduced what space for a planet gear 16 leaves. The planet gear 16 is seated freely rotatable on an axis 17. The axis 17 is parallel to the axis of rotation 9 firmly driven in rotation Housing 3 arranged. The planet gear 16 is with the internally arranged degree toothing 14 of the sleeve 10 in engagement.

Axially parallel to the axis of rotation 9 is rotating drivable housing 3 an eccentric pin 18th rotatably mounted. The eccentric pin axis 19 in order that of the eccentric pin 18 has from the axis of rotation 9 of the rotatably drivable housing 3 the distance a. The eccentric pin 18 is on one Side with an axially parallel eccentric pin 20 equipped of the axis of rotation 19 of the eccentric bolt 18 has the distance a. The eccentric pin 20 protrudes beyond the housing 3 Lid 21 out. He reaches into a sliding block 29, which in a known manner the rotating Movement of the eccentric pin 20 in the back and forth moving movement offset, the as rubbing movement the rubbing roller 30 is used. The eccentric bolt 18 is on the side of the eccentric pin 20 provided with a conical slide bearing surface 22, which with a correspondingly shaped in the lid 21 Opening forms a storage 24. The the eccentric pin 20 opposite end of the eccentric pin 18 is in a radial bearing 23 stored. Between bearing 24 and radial bearing 23 is the eccentric pin 18 with a toothing 25 provided which with the planet gear 16 in Intervention stands. The eccentric pin 18 is through a spring 26 which in an opening 27 of the Eccentric 18 is inserted and which itself on the cover 28, which is driven in rotation Seals housing 3 at its rear end, supports, pressed into the conical bearing 24. The spring force and the cone angle of the Bearings 24 are coordinated so that the eccentric 18 probably to adjust the Verreibhubes is rotatable, but the load changes, by the back and forth movement of the Distribution roller arise, not on the toothing 25 and transferred to the planetary gear 16.

The adjustment of the distance of the eccentric pin 18 of the axis of rotation 9 of the rotating drivable housing 3 and thus the adjustment the stroke of the rubbing movement of the friction roller, is done by turning the eccentric bolt 18 with respect to the rotatably drivable housing 3. This rotation of the eccentric pin 18 happens in a vivid way that the Sleeve 10 against the rotatingly drivable Housing 3 is rotated, causing this rotation via the planetary gear 16 on the Eccentric bolt 18 is transmitted. Immediately next to the sleeve 10 has the rotatably drivable Housing 3 via a coaxial to the axis of rotation 9 arranged toothing 31, which have the same effective diameter has how the helical teeth 13 of Sleeve 10.

2 that is driven in rotation Housing 3 constructed identically, as described in Fig. 1 has been. The difference is that rotating parallel to the axis of rotation 9 of the drivable housing 3 two eccentric bolts 32 or 33 are rotatably mounted. The first eccentric bolt 32 and the second eccentric 33 push in the center of the rotating housing 3 almost with a small space on the front to each other. The axis of rotation 34 of the first eccentric pin 32 and the turning axis 35 of the second Eccentric 33 can to the axis of rotation 9 of the rotatably drivable housing 3 a different Have a or b distance (cf. Fig. 7). Both eccentric bolts 32 and 33 are on the outer ends with an eccentric pin 36 and 37 equipped in the manner described the corresponding friction rollers 38 and 39 in to move axially back and forth. Both Eccentric bolts 32 and 33 are on the eccentric pin side with conical plain bearing surfaces 40 or 41 to be seen in the corresponding openings the lid 42 or 43, which is rotating seal drivable housing 3 on both sides, be rotatably supported. Each of the eccentric bolts 32 and 33 each with an additional radial bearing 44 and 45 held. Both eccentric bolts 32 and 33 are at their adjacent ends with each a toothing 46 or 47 equipped, which are both engaged with the planetary gear 16. By turning the sleeve 10 two eccentric bolts 32 and 33 together the planet gear 16 rotates. In an opening of the first eccentric bolt 32 is a spring bolt 49 slidably inserted, which with a spring 50 against the face of the second eccentric bolt 33 is pressed. This spring bolt 49 causes both the first eccentric pin 32 as well as the second eccentric 33 against the corresponding conical plain bearing surface 40 or 41 are pressed. The spring force of spring 50 and the cone angle of the two plain bearing surfaces 40 and 41 are matched to one another in such a way that the eccentric bolts 32 and 33 probably for adjustment the rubbing stroke of the two friction rollers 38 or 39 can be rotated, but that the load changes, by the back and forth movement of the Friction rollers 38 and 39 arise, not on the Transfer teeth of the adjustment device will.

According to FIG. 3, this has to be driven in rotation Housing 3 has a recess 15 in which the planet gear 16 is arranged. The planet gear 16 is freely rotatable about the axis 17, which with the rotatably drivable housing 3 is firmly connected. Around the rotatingly drivable Housing 3, the sleeve 10 is rotatably mounted. Outside the sleeve 10 has helical teeth 13, while the internal spline 14 is in engagement with the planetary gear 16. Either the rotatably drivable housing 3, such as the Sleeve 10 have a common axis of rotation 9 on. The first eccentric bolt 32 is at a distance a rotatably supported by the axis of rotation 9 while the second eccentric 33 the distance b from the axis of rotation 9. Both the gearing 46 of the first eccentric bolt 32 as well Teeth 47 of the second eccentric bolt 33 are in engagement with the planetary gear 16 and consequently point from the axis 17 of the planet gear 16 the same distance.

4 and 5 show in spatial representation, how the twisting of the sleeve 10 with respect to the rotatably drivable housing 3 is going on. On a rotating parallel to the axis of rotation 9 of the drivable housing 3, but outside the same stored, schematically illustrated shaft 51, a helical spur gear 52 is arranged, which is in constant engagement with the gearing 31 of the rotatably drivable housing 3. On the same, schematically shown shaft 51 sits a helical adjustment wheel 53, which continuously in engagement with the helical teeth 13 of the Sleeve 10 is. The adjusting wheel 53 is related to that Spur gear 52 on the schematically illustrated shaft 51 slidable, but maintains its rotational position opposite the spur gear 52. This will do so achieved that the adjusting wheel 53 via a sleeve 54 which is profiled in the longitudinal direction and which in an appropriately shaped opening 55 of the spur gear 52 can be inserted.

The rotatingly drivable housing 3 is the gear 8 from the machine drive in rotation transferred. That with the teeth 31 of the rotating drivable housing engaged Spur gear 52 and the adjusting wheel 53 are also set in rotation. The adjusting wheel 53 transmits the rotational movement via the helical gearing 13 on the sleeve 10. Since toothing 31 and helical teeth 13 of the sleeve 10 on the one hand and the adjusting wheel 53 and the spur gear 52 on the other hand have the same effective diameter the rotatably drivable housing 3 and Sleeve 10 is still relative to each other. Now around the sleeve 10 with respect to the rotatably drivable housing 3 to be able to turn the adjusting wheel 53 in Longitudinal direction of the shaft shown schematically 51 moved. The helical toothing of the adjustment wheel 53 and the helical teeth 13 of the Sleeve 10 causes sleeve 10 to twist. This adjustment process can both during the Run of the rotatably drivable housing 3 as also be carried out when it is at a standstill. Fig. 4 shows the adjusting wheel 53 in its left extended Position. In this position the Eccentric pin 36 from the axis of rotation 9 of the rotating drivable housing 3 its maximum Distance c. That means that on the friction roller transferred float is maximum and corresponds to the wash stroke.

5 shows the situation when the Adjustment wheel moved to the retracted position becomes. The eccentric bolt 32 is turned so far that the eccentric pin 36 with its central axis in the axis of rotation 9 of the rotatably drivable Housing falls. In this zero position there is no back and forth Transfer movement to the friction roller.

Fig. 6 shows the adjusting device for moving of the adjusting wheel 53. As already mentioned, is the adjusting wheel 53 with a sleeve 54 equipped, which on its surface in the longitudinal direction is profiled. This sleeve 54 is in one accordingly designed opening 55 of the spur gear 52, which is stationary, insertable. Either Spur gear 52 as well as adjusting wheel 53 are around Axis 51 rotatable. The sleeve 54 is with a Piston rod 56 firmly connected. The piston rod 56 forms with a piston 57 and a cylinder housing 58 a unit that functions as a Has pneumatic cylinder. The piston rod 56 is in divided into two parts, which in a known manner are coupled together so that the Rotary movement of the spur gear 52 and the adjusting wheel 53 is not transferred to the piston 57, whereas the thrust movement of the piston 57 the sleeve 54 of the adjusting wheel 53 transmitted must become. The left end position of the adjustment wheel 53 is through the fixed stop 59 of the piston 57 fixed. This location means that the back and forth Movement of the friction roller is maximum and corresponds to the wash stroke. For setting the working stroke the friction rollers, which is smaller than that Wash stroke, the piston 57 from the other Side acted upon by a pressure medium and moves against an adjustable stop 60. The adjustable stop 60 is with a Provide thread 61 so that by twisting the position of the adjustable stop 60 be changed due to the thread 61 can. Twisting the adjustable stop 60 takes place via a toothed belt drive, not shown on the toothed belt pinion 62.

7 shows the arrangement of the first eccentric bolt 32 and the second eccentric bolt 33 with respect to the axis of rotation 9 of the rotatably drivable Housing 3 shown schematically. The axis of rotation 34 of the first eccentric bolt 32 points from the axis of rotation 9 the distance a. The same The eccentric pin 36 has a distance a from the axis of rotation 34 of the eccentric bolt 32. When twisting the eccentric bolt 32 moves the center of the eccentric pin 36 along the circular arc 63. At the zero position, the center of the eccentric pin falls 36 together with the axis of rotation 9. At Wash stroke position shows the center of the eccentric pin 36 from the axis of rotation 9 the distance c on. The axis of rotation is perpendicular to the distance a 35 of the second eccentric bolt 33 at a distance b arranged from the axis of rotation 9. The the center of the eccentric pin has the same distance b 37 from the axis of rotation 35 of the second Eccentric bolt 33 on. So at zero it falls Center of the eccentric pin 37 with the axis of rotation 9 together. When turning the eccentric bolt 33 moves the center of the eccentric pin 37 along the arc 64. At maximum Twist of the eccentric 33 has the Eccentric pin 37 from the axis of rotation 9 the distance d.

The right angle between the distance a of the eccentric bolt 32 and the distance b of the Eccentric 33 from the axis of rotation 9 was chosen so that the distribution stroke of two at the same time reciprocating friction rollers are not in phase runs.

Fig. 8 shows schematically the placement of a so rotatably driven housing 3 with the two eccentric pins 36 and 37 between two Rubbing rollers 38 and 39 of a printing press 65. The color of the friction rollers 38 and 39 or the dampening solution via application rollers 66 and 67 transferred to the plate cylinder 68. From there the print image is transferred via the Blanket cylinder 69 on the not shown Print carrier.

Claims (12)

1. Device for adjusting the axial distribution stroke of at least one oscillating roller in a rotary printing machine

   a) having a rotating body driven from the machine drive;

   b) having a coaxial eccentric pin (20, 36, 37) disposed on the rotating body;

   c) having a device for adjusting the distance (a) of the eccentric pin from the axis (9) of rotation of the rotating body;

   d) having means (29) for converting the rotary movement of the eccentric pin into a reciprocating movement and for transmitting the latter to the oscillating rollers;

   e) having at least one housing (3) which can be rotatably driven in a positionally fixed manner and, mounted axially parallel to the axis of rotation of the latter at a distance (a), one eccentric bolt;

   f) having an eccentric pin (20, 36, 37) disposed at the end of the eccentric bolt at a distance (a) from the eccentric bolt axis (18, 32, 33);

   g) having an adjustment device disposed in an operable manner outside the housing (3) for rotating the eccentric bolt (18, 32, 33) through an angle of its eccentric bolt axis (19);

   h) so that, in a limit position of the adjustment range, the axis of the eccentric pin coincides with the axis (9) of the rotatably drivable housing in order to achieve the minimum stroke;

   i) so that, in the other limit position of the adjustment range, the axis of the eccentric pin is at a distance from the axis (9) of the rotatably drivable housing in order to achieve the maximum stroke;
   characterized

   k) in that the rotating housing (3) is designed as a mechanism which rotates in a positionally fixed manner and is drivable and whose adjustment input (10, 13, 14) is situated on the external circumference; and

   l) in that the rotating housing (3) is actuable by a comb engagement with adjustment devices (52, 53) during an axial displacement of a control element (54, 56, 57) disposed outside the rotating housing (3) and can be brought in a stepless manner into coincidence with the axis of drive rotation (9) as an eccentric position or into the other extreme position, respectively, as the maximum stroke when the rotary printing machine is operated in order to rotate the eccentric pin (20, 36, 37) disposed on the eccentric bolt (18, 32, 33).
2. Device according to Claim 1, characterized in that the adjustment device (10, 16, 52, 53) for rotating the eccentric bolt (18) comprises a coaxially disposed sleeve (10) which is mounted rotatably on the rotatably drivable housing (3) and which is provided on its inside with a toothing (14) which engages in a planetary gearwheel (16) which is rotatably mounted in a positionally fixed manner in the rotatably drivable housing (3) and which is in turn engaged in a toothing (25) provided on the eccentric bolt (18).
3. Device according to Claim 2, characterized in that the sleeve (10) disposed on the rotatably drivable housing (3) is provided with a helical toothing (13) which is provided on the outside and in which there engages a gearwheel (53) which is provided with a matching helical toothing, which can be displaced in an axially parallel manner on a positionally fixed axis (51) and is disposed outside the rotatably drivable housing (3).
4. Device according to Claim 3, characterized in that the gearwheel (53) provided with a helical toothing is joined non-rotatably but axially displaceably and coaxially to a spur gearwheel (52) which is engaged in a toothing (31) provided on the rotatably drivable housing (3) and rotating about the axis (9) of rotation.
5. Device according to one of Claims 3 or 4, characterized in that the gearwheel (53) provided with a helical toothing is displaced by means of a pneumatically actuable piston (57) whose stroke can be adjusted by means of an adjustable stop (60).
6. Device according to one of Claims 1 to 5, characterized in that the eccentric bolt (18) is provided at its two ends with one eccentric pin (20) in each case which have the same position with respect to the axis (19) of the eccentric bolt.
7. Device according to one of Claims 1 to 5, characterized in that a second eccentric bolt (33) is disposed in the rotatably drivable housing (3) in addition to a first eccentric bolt (32) in such a manner that its eccentric pin (37) is opposite the eccentric pin (36) of the first eccentric bolt (32), and is at the distance (b) from the axis (35) of the second eccentric bolt (33) and in that the axis (35) of the second eccentric bolt (33) is at the same distance (b) from the axis (9) of rotation of the rotatably drivable housing (3).
8. Device according to Claim 7, characterized in that the two eccentric pins (36, 37) are mutually offset by an angle of 90° and in that the two axial distances (a and b) of the axis (34) of the first eccentric bolt (32) from the axis (9) of rotation and the axis (35) of the second eccentric bolt (33) from the axis (9) of rotation form an angle of 90°.
9. Devise according to Claim 7 or 8, characterized in that two toothings (46 or 47) disposed at the central ends of the two eccentric bolts (32 and 33) jointly mesh with the planetary gearwheel (16).
10. Device according to one of Claims 7 to 9, characterized in that the outer mountings (40) and (41) of the corresponding eccentric bolts (32 or 33) are conical sliding-bearing surfaces and in that the eccentric bolts (32 and 33) formed with matching cones are pressed into the conical sliding-bearing surfaces by a centrally disposed spring (50).
11. Device according to one of Claims 1 to 10, characterized in that the rotatably drivable housing (3) is rotatably mounted on the printing press (65) in such a way that its axis (9) of rotation is at right angles to the axis of rotation of the oscillating rollers (30, 38, 39), and in that the eccentric pin or pins (20) or/and 36, 37) mesh in sliders which convert the rotary movement of the eccentrics into a reciprocating movement and transmit it to the oscillating rollers (30 or 38 and 39) in their axial direction.
12. Device according to Claim 11, characterized in that a drive gearwheel (8) which can be driven from the press drive is disposed non-rotatably on the rotatably drivable housing (3).

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