WO2002024457A1

WO2002024457A1 - Drive system for a printer

Info

Publication number: WO2002024457A1
Application number: PCT/DE2001/003559
Authority: WO
Inventors: Ewald RÖTHLEIN; Kurt Johannes Weschenfelder
Original assignee: Koenig & Bauer Aktiengesellschaft
Priority date: 2000-09-20
Filing date: 2001-09-17
Publication date: 2002-03-28
Also published as: AU2002213795A1; EP1318913A1; DE10046375A1; DE10046375B4

Abstract

A printer drive system comprising at least two pairs (02, 03, 04, 06) consisting of a form cylinder (07, 09, 12, 14) and a transfer cylinder (08, 11, 13, 16), respectively, and at least one satellite cylinder (17), has a switchable mechanical coupling (32) between the form cylinder and the associated transfer cylinder. Each pair is driven by a common drive motor (19, 21, 22, 23). At least two of the transfer cylinders can be brought into a first position for rubber-on-rubber operation or into a second position for rubber-on-steel operation. The pivotable transfer cylinder is driven by means of a pinion (28) with a rotational axis that is fixed in relation to the frame.

Description

description

Drive a printing unit

The invention relates to a drive of a printing unit according to the preamble of claims 1, 2 and 4.

From EP 06 44 048 B1 a drive of a nine-cylinder printing unit with four pairs of a forme cylinder and a transfer cylinder firmly coupled to the forme cylinder is known, wherein a drive motor drives the transfer cylinder, which drives via a toothed belt on the assigned forme cylinder. The satellite cylinder working together with the pairs has its own drive motor.

DE 197 32 330 A1 shows a five-cylinder printing unit which is driven by three drive motors, each arranged on the forme cylinder and one on the satellite cylinder. The drives of all five cylinders can be optionally connected by means of a coupling arranged between two cylinders.

DE 197 24 765 A1 discloses a drive for a bridge printing unit, wherein at least one of the transfer cylinders can optionally be pivoted into a position of contact with the other transfer cylinder or into a print stop. In one embodiment, the pinion driving the transfer cylinder lies in the bisector of the angle which results from the connecting lines of the pivot axis with the respective axes of rotation of the same transfer cylinder in the push-on and push-down position.

In WO 98 53 995 A1, a cylinder of a bridge printing unit is arranged pivotably about a pivot axis lying eccentrically with respect to the axis of rotation of the cylinder. The swiveling cylinder is driven by a pinion. The axis of rotation of the Pinion lies within the angle which results from the connecting lines of the swivel axis with the respective axes of rotation of the same transfer cylinder in the push-on and push-down position. The pinion is preferably in the range of ± 5 ° from the bisector of this angle, which has an opening angle of ± 20 °.

DE 30 48 840 C1 shows a printing unit, wherein a transfer cylinder of a pair of cylinders can be adjusted either to a satellite cylinder or to a second transfer cylinder. All cylinders are driven together by a main drive via a gear train.

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

The object is achieved by the features of claims 1, 2 and 4.

The advantages that can be achieved with the invention are, in particular, that an independent drive of the cylinders acting together with a web, eg. B. a satellite and one or more transfer cylinders on one side, and the forme cylinder or the dyeing and / or dampening units on the other side is possible. The forme cylinders or dyeing and / or dampening units can advantageously be set up without necessarily affecting a web that has been drawn in or is in production.

Of particular advantage is the arrangement of a drive motor and a clutch on a pair of cylinders in such a way that in addition to the above. a switch from a rubber-to-steel operation to a rubber-to-rubber operation is made possible. This requires a reversal of the direction of rotation of at least one pair of cylinders, which is advantageously ensured by means of the drive motor per pair.

While for printing units that cannot be switched to two operating modes, e.g. B. bridge printing units, only one fixed pressure point and thus only one Gear play of a drive optimized working point must be taken into account, in addition to a parked position with a convertible cylinder two, u. U pressure points located far apart from each other. Accordingly, the position of a pivot point of an eccentric is generally to be arranged in a position that is clearly different from the first case. In an advantageous manner, an optimal compromise between the two pressure points, taking into account the two pressure points and the axes of rotation of the cylinders, is found for the drive of the convertible cylinder. In an advantageous embodiment, the axis of the drive lies almost in the plane of the bisector of the angle, which, due to the intersecting planes, is spanned by the connection of the axes of rotation of the interacting cylinders in the respective operating mode. The two pressure points are also on these levels.

Both in pressure-on positions and in pressure-down positions can be driven at full power without endangering the drive connection.

Advantageously, the drive motor uses a pinion to drive a gearwheel which can optionally be fixed on the pin of the transfer cylinder and which meshes rigidly with a gearwheel of the forme cylinder. In an advantageous embodiment, the gear wheel of the transfer cylinder is internally toothed and thus enables a particularly compact drive with the internally running pinion.

Another advantage is the use of a uniqueness coupling between the form and transfer cylinder, which allows a register-correct coupling and a position of any existing tensioning or fastening channels on the lateral surface of the cylinders so that they roll against each other.

Embodiments of the invention are shown in the drawings and are described in more detail below. Show it:

Figure 1 is a schematic representation of a nine-cylinder printing unit.

FIG. 2 shows an enlarged and more detailed illustration according to FIG. 1;

Fig. 3 is a schematic representation of a first embodiment for driving a pair of cylinders;

Fig. 4 is a schematic representation of a second embodiment for driving a pair of cylinders.

A printing unit 01, e.g. B. a nine-cylinder printing unit 01, a printing press, in particular a web-fed printing press, has four pairs 02; 03; 04; 06 of cylinders 07; 08; 09; 11; 12; 13; 14; 16, e.g. B. each a forme cylinder 07; 09; 12; 14 and a transfer cylinder 08; 11; 13; 16, as well as one with the pairs 02; 03; 04; 06 cooperating cylinders 17, in particular a satellite cylinder 17 (FIG. 1).

At least two of the transfer cylinders 08; 11; 13; 16, in an advantageous embodiment, all transfer cylinders 08; 11; 13; 16 are each optionally in two layers GS; GG, e.g. B. in a first position for a rubber-against-rubber operation GG and in a second position a rubber-against-steel operation GS.

In the first layer GG, two transmission cylinders 08; adjacent in the circumferential direction of the satellite cylinder 17; 11; 13; 16 placed in pairs and at the same time parked by the satellite cylinder 17. A web 18, e.g. B. a paper web 18, runs in each case between the transfer cylinders 08; 11; 13; 16 (shown in Fig. 1 each with a solid line for the transfer cylinders 08; 13; and the web 18). In the second position GS, the transfer cylinder 08; 11; 13; 16 employed on the satellite cylinder 17 and cooperates with the satellite cylinder 17 via the path 18 (shown in FIG. 1 for the transmission cylinders 08; 13 and for the path 18 with a dashed line). The transfer cylinder 08; 11; 13; 16 can be brought into a third position, not shown, wherein it is neither connected to the satellite cylinder 17 nor to another transmission cylinder 08; 11; 13; 16 is employed.

Each of the pairs 02; 03; 04; 06 has a drive motor 19; 21; 22; 23 on. The satellite cylinder 17 has its own drive motor 24, which is advantageously arranged centrally to the satellite cylinder 17.

2 shows an example of the different layers GG for the transfer cylinder 08; GS with a printing point 26 in the GG position between the transmission cylinder 08 and the adjacent transmission cylinder 11 and a printing point 27 in the GS position between the transmission cylinder 08 and the satellite cylinder 17.

Also shown in simplified form in FIG. 2, the drive of the pair 02; 03; 04; 06 by means of the drive motor 19; 21; 22; 23 via an assigned pinion 28 using the example of the pair 02 with the drive motor 19.

As shown in FIG. 2, the axis of rotation D of the pinion 28 is almost in a plane E of a bisector of an angle α, which is defined by two intersecting planes E1; E2 is formed. The plane E1 is spanned by the axis of rotation R1 of the transfer cylinder 08 during the rubber-to-rubber operation GG and the axis of rotation R3 of the transfer cylinder 11 cooperating with the transfer cylinder 08 in the rubber-to-rubber operation GG. The pressure point 26 is located in this plane E1. The plane E2 is defined by the axis of rotation R2 of the transfer cylinder 08 during the rubber-to-steel operation GS and the axis of rotation R4 by the transfer cylinder 08 in the rubber-to-steel operation. Operation GS cooperating satellite cylinder 17 is formed. The pressure point 27 lies in this plane E2. The axis of rotation D of the pinion 28 is fixed to the frame relative to the printing unit 01.

The angle α is preferably between 45 ° and 60 °. In an advantageous embodiment, the axis of rotation D lies within an angular range of + 10 °, preferably within ± 5 °, from the bisector of the angle, the plane E.

In a first exemplary embodiment (FIG. 3), the pairs 02; 03; 04; 06 by means of the drive motors 19; 21; 22; 23 each via the assigned pinion 28, exemplarily shown on the pair 02, which on a shaft 39, z. B. the motor shaft 39 is arranged. However, the pinion 28 can also be driven via a joint, via a gear train (not shown) or via a belt or chain drive (not shown).

By means of the drive motor 19, a drive wheel 29 arranged centrally to the transfer cylinder 08, for. B. a gear 29 driven. This gear 29 is rotatably mounted on a pin 31 or a shaft 31 of the transfer cylinder 08 and optionally by means of a switchable mechanical coupling 32, for. B. a coupling 32, rotatably connected to the pin 31.

The clutch 32 can be designed as a positive one-way or multi-purpose clutch or else as a frictional or non-positive continuous clutch 32.

In the exemplary embodiment according to FIG. 3, the gearwheel 29 with external teeth is connected to a gearwheel 33 which is also rotatably mounted on the pin 31 and which is in rigid engagement with a gearwheel 36 which is arranged in a rotationally fixed manner on a pin 34 or a shaft 34 of the forme cylinder 07 , It is advantageous to design the interconnected gears 29 and 33 as a rotatably mounted and optionally fixable double gear 29, 33. However, instead of the two gears 29; 33 only a single gear 29 can be arranged, which cooperates with both the pinion 28 and the gear 36 on its circumference. Advantageous in the embodiment as a double gear 29, 33, or as two individual, but together fixable gears 29; 33 is the possibility of realizing different gear ratios.

Regardless of the design of the gears 29; 33, the axis of rotation D of the pinion 28 lies approximately in the plane E described above, but cannot be represented in FIG. 3, and runs almost parallel to the respective axis of rotation R1; R2 of the transfer cylinder 08.

The pin 31 of the transfer cylinder 08 is for pivoting about a pivot axis S in an eccentric bearing 37, for. B. in a four-ring bearing 37, in frame walls 38 on both faces of the cylinder 07; 08; 09; 11; 12; 13; 14; 16 mounted (only the frame wall 38 is shown on one drive side in the figures).

The pivot axis S runs almost parallel to the axis of rotation R1; R2 of the transfer cylinder 08 and is preferably located between the two levels E1; E2. In a further advantageous embodiment, the pivot axis S ± 10 ° lies from an imaginary connecting line between the transfer cylinder 08 and the associated forme cylinder 07.

But it is also conceivable that the transfer cylinder 08 by means of other mechanisms, for. B. by means of a lever, a linear drive or in any other way from a position GG; To bring GS into the other.

In a second embodiment (Fig. 4), the drive wheel 29 is designed as a gear 29 with internal teeth. The pinion 28 is arranged so that its External toothing meshes with the internal toothing, the axis of rotation D of the pinion 28 again in approximately the plane E not shown in FIG. 4 and almost parallel to the respective axis of rotation R1; R2 of the transfer cylinder 08 runs.

It is advantageous to design the coupling 32 as a uniqueness coupling, which permits a register-correct coupling between the forme cylinder 07 and the transfer cylinder 08. This also ensures that the cylinders 07; 08 located fastening or tension channels when rolling off the cylinder 07; 08 meet each other.

The design of the coupling 32 from the exemplary embodiment according to FIG. 4 can also be applied to the design according to the exemplary embodiment according to FIG. 3 and vice versa.

The design and arrangement of the coupling 32 connecting the drive wheel 29 and the gear 33 or the double gear 29, 33 with the pin 31 of the transfer cylinder 08 can be carried out in different ways. For example, it can be a positive coupling 32 acting radially to the pin 31 or else axially acting to the pin.

In a development of the exemplary embodiments, the forme cylinder 07; 09; 12; 14 each driven to an inking unit, not shown. This can e.g. B. by another, on the pin 34 of the forme cylinder 07; 09; 12; 14 arranged gear, not shown, or by means of the gear 36 and a gear, not shown.

The arrangement of the drives shown in FIGS. 2 to 4 and explained in the exemplary embodiments are based on the other pairs 03; 04; 06 apply accordingly. Also for five-cylinder printing units 01 with only two pairs 02; 03; 04; 06 or for ten-cylinder printing units 01 with two satellite cylinders 17, each with two adjacent pairs 02; 03; 04; 06 act together are the described arrangements for driving the pairs 02; 03; 04; 06 advantageous.

In a further embodiment, the pinion 28 can lie in the bisector of an angle, not shown, which is again spanned by two intersecting planes, not shown. However, the planes are formed here by connecting the axes of rotation R3 and R4 to the pivot axis S, so that the apex of the angle lies in the fixed pivot axis S.

In another embodiment, the pinion 28 can also be arranged on the shaft 39 which is not designed as a motor shaft and which carries a further gear wheel or a pulley (not shown). The pinion 28 is then driven, for example, by a gear train, a belt drive or a chain.

The function of the drive of the printing unit is as follows: If the web 18 is retracted, set-up, e.g. B. a plate change or washing, or pre-inking the forme cylinder 07; 09; 12; 14 or with the forme cylinder 07; 09; 12; 14 coupled inking unit take place, the clutch 32 between form 07; 09; 12; 14 and transfer cylinder 08; 11; 13; 16 solved, the forme cylinder 07; 09; 12; 14 is independent of the other cylinders 07; 08; 09; 11; 12; 13; 14; 16; 17 can be stopped or by means of the drive motor 19; 21; 22; 23 movable. In the case of a flying plate change, after the set-up, re-acceleration and reaching the production speed, the forme cylinder 07; 09; 12; 14 again by closing the clutch 32 to the associated transfer cylinder 08; 11; 13; 16 coupled.

For a changeover of the printing unit 01, or a changeover of parts of the printing unit 01, from the rubber-against-steel GS to the rubber-against-rubber operation GG or vice versa, the transfer cylinder 08; 11; 13; 16 rotated about the pivot axis S. In rubber-against-steel operation GS, for example, one-sided fourfold printing (4/0) or one-sided imprint operation during single-sided triple printing (3/0) are possible.

In the rubber-to-rubber operation GG, a web 18 can be printed twice (2/2) on both sides. However, a one-sided or double-sided flying plate change is also possible.

Are two adjacent transmission cylinders 08; 11; 13; 16 in rubber-against-rubber operation GG, while the other two transfer cylinders 08; 11; 13; 16 cooperate with the satellite cylinder 17 in the rubber-against-steel operation GS, so triple printing on one side and simple printing on the other side (3/1) of the web 18 is also possible.

The drive and the function of the pivotable transfer cylinder 08; 11; 13, 16 by means of the pinion 28 arranged with its axis of rotation D on or near + 5 ° at the bisector of the angle α is also possible for other cylinders 07; 08; 09; 11; 12; 13; 14; 16; 17, e.g. B. forme cylinder 07; 09; 12; 14 or satellite cylinder 17 can be used if these should be able to be brought into two spaced-apart positions or operating points and at the same time the axis of rotation D of the pinion 28 is stationary.

LIST OF REFERENCE NUMBERS

01 printing unit, nine-cylinder, five-cylinder, ten-cylinder printing unit

02 pairs

03 pair

04 pair

05 -

06 pair

07 cylinders, form cylinders

08 cylinder, transfer cylinder

09 cylinders, form cylinders

10 -

11 cylinders, transfer cylinders

12 cylinders, form cylinders

13 cylinders, transfer cylinders

14 cylinders, forme cylinders

15 -

16 cylinders, transfer cylinders

17 cylinders, satellite cylinders

18 web, paper web

19 drive motor (02)

20 -

21 drive motor (03)

22 drive motor (04)

23 drive motor (06)

24 drive motor (17)

25 -

26 pressure point

27 pressure point 28 sprockets

29 Drive wheel, gear wheel, externally toothed, internally toothed

30 -

31 journal, shaft (08)

32 coupling, mechanical, switchable, coupling (31)

33 gear (31)

34 spigot, shaft (07)

35 -

36 gear (34)

37 bearings, eccentric, four-ring bearings (38)

38 frame wall

39 shaft, motor shaft

D axis of rotation (28)

E level (D)

E1 level (26, R1)

E2 level (27, R2)

R1 axis of rotation (GG)

R2 axis of rotation (GS)

R3 rotation axis (GG)

R4 axis of rotation (GS)

S swivel axis

α angle (E1, E2)

GG location, first, rubber-against-rubber operation

GS location, second, rubber-to-steel operation

Claims

Expectations

1. Drive of a printing unit, which has at least two pairs (02; 03; 04; 06) each of a forme cylinder (07; 09; 12; 14) and a transfer cylinder which interacts with the forme cylinder (07; 09; 12; 14) (08; 11; 13; 16) and at least one satellite cylinder (17), the forme cylinder (07; 09; 12; 14) and the associated transfer cylinder (08; 11; 13; 16) each having a switchable coupling (32 ) are mechanically connected to one another and can be driven in pairs by means of a common drive motor (19; 21; 22; 23), characterized in that at least one of the transfer cylinders (08; 11; 13; 16) is optionally in a first position for the rubber counter Rubber operation (GG), in which two adjacent transfer cylinders (08; 11; 13; 16) work together, and in a second position for rubber-against-steel operation (GS), in which the transfer cylinder (08; 11 ; 13; 16) cooperates with the assigned satellite cylinder (17), can be brought.

2. Drive of a printing unit, which has at least two pairs (02; 03; 04; 06), each of a forme cylinder (07; 09; 12; 14) and a transfer cylinder that interacts with the forme cylinder (07; 09; 12; 14) (08; 11; 13; 16) and at least one satellite cylinder (17), at least one of the transmission cylinders (08; 11; 13; 16) optionally in a first position for rubber-to-rubber operation (GG), in which two adjacent transfer cylinders (08; 11; 13; 16) work together, and in a second position for rubber-against-steel operation (GS), in which the transfer cylinder (08; 11; 13; 16) with the associated satellite cylinder (17) interacts, can be brought, characterized in that the forme cylinder (07; 09; 12; 14) and the assigned transfer cylinder (08; 11; 13; 16) by means of a common drive motor (19; 21; 22; 23 ) can be driven in pairs and without a positive drive connection to the satellite cylinder (17).

3. Drive according to claim 2, characterized in that the forme cylinder (07; 09; 12; 14) and the transfer cylinder (08; 11; 13; 16) of the pair (02; 03; 04; 06) via a switchable coupling ( 32) are interconnected.

4. Drive a printing unit, which has a position-variable cylinder (08; 11; 13; 16), which optionally in a first position (GG) to a second cylinder (08; 11; 13; 16) or in a second position (GS ) can be adjusted to a third cylinder (17), the position-variable cylinder (08; 11; 13; 16) being drivable by means of a pinion (28), characterized in that an axis of rotation (D) of the pinion (28) almost in one Plane (E) of a bisector of an angle (α), which is formed by two intersecting planes (E1; E2), namely the planes (E1; E2), each of which is defined by an axis of rotation (R1; R2) of the cylinder (08 ; 11; 13; 16) in its respective position (GG; GS) and an axis of rotation (R3; R4) of the cylinder (08; 11; 13; 16; 17) interacting in this position (GG; GS).

5. Drive according to claim 4, characterized in that the position-variable cylinder (08; 11; 13; 16) is designed as a transfer cylinder (08; 11; 13; 16) which is in the first position (GG), namely in one position for a rubber-against-rubber operation (GG), on the second cylinder (08; 11; 13; 16), which is also designed as a transfer cylinder (08; 11; 13; 16), and in the second position (GS), namely in a position for rubber-against-steel operation (GS), on which third cylinder (17) designed as a satellite cylinder (17) can be adjusted.

6. Drive according to claim 5, characterized in that the transfer cylinder (08; 11; 13; 16) via a switchable coupling (32) is mechanically connected to an associated forme cylinder (07; 09; 12; 14), and that Transfer cylinder (08; 11; 13; 16) with the assigned forme cylinder (07; 09; 12; 14) forms a pair (02; 03; 04; 06) which can be driven by means of a common drive motor (19; 21; 22; 23).

7. Drive according to one of claims 1 or 3, characterized in that the pair (02: 03, 04; 06) via a pinion (28) can be driven.

8. Drive according to one of claims 4 or 7, characterized in that a drive wheel (29) is arranged centrally to the transfer cylinder (08; 11; 13; 16), on which the pinion (28) drives and which by means of the coupling (32 ) can optionally be connected in a rotationally fixed manner to the transfer cylinder (08; 11; 13; 16).

9. Drive according to claim 7, characterized in that an axis of rotation (D) of the pinion (28) lies almost in a plane (E) of a bisector of an angle () which is formed by two intersecting planes (E1; E2), namely the plane (E1), which is composed by a rotation axis (R1) of the transfer cylinder (08) during the rubber-to-rubber operation (GG) and a rotation axis (R3) of the rubber-to-rubber operation (GG) acting second transmission cylinder (11), and the plane (E2), which is defined by an axis of rotation (R2) of the transfer cylinder (08) during the rubber-to-steel operation (GS) and a rotation axis (R4) of the satellite cylinder (17 ) in rubber-against-steel operation (GS).

10. Drive according to claim 8, characterized in that the pinion (28) on a shaft (39) of the drive motor (19; 21; 22; 23) is arranged.

11. Drive according to claim 8, characterized in that the pinion (28) by means of the drive motor (19; 21; 22; 23) can be driven via a gear train.

12. Drive according to claim 8, characterized in that the pinion (28) by means of Drive motor (19; 21; 22; 23) can be driven via a belt or chain drive.

13. Drive according to claim 8, characterized in that the drive wheel (29) is designed as an internally toothed gear (29).

14. Drive according to claim 8, characterized in that the drive wheel (29) is designed as an externally toothed gear (29).

15. Drive according to claim 8, characterized in that the drive wheel (29) with a likewise rotatably mounted on the pin (31) of the transfer cylinder (08; 11; 13; 16) gear (33) is connected.

16. Drive according to claim 15, characterized in that the gearwheel (33) is in constant engagement with a gearwheel (36) connected to the forme cylinder (07; 09; 12; 14).

17. Drive according to claim 15, characterized in that the drive wheel (29) together with the gear (33) is designed as a double gear (29, 33).

18. Drive according to one of claims 4 or 9, characterized in that the angle (α) between the planes (E1; E2) is between 45 ° and 60 °.

19. Drive according to one of claims 4 or 9, characterized in that the axis of rotation (D) of the pinion (28) in an angular range of at most ± 10 °, in particular + 5 °, of the plane (E) of the bisector of the angle ( ) lies.

20. Drive according to one of claims 1, 3 or 6, characterized in that the switchable coupling (32) is designed as a form-fitting coupling (32), in particular as a unique coupling.

21. Drive according to one of claims 1, 2 or 6, characterized in that the pairs (02; 03; 04; 06) are part of a five-cylinder printing unit (01).

22. Drive according to one of claims 1, 2 or 6, characterized in that the pairs (02; 03; 04; 06) are part of a nine-cylinder printing unit (01).

23. Drive according to one of claims 1, 2 or 6, characterized in that the pairs (02; 03; 04; 06) are part of a ten-cylinder printing unit (01).

24. Drive according to one of claims 1, 2 or 6, characterized in that the satellite cylinder (17) has its own drive motor (24).