DE102007039222A1 - Arrangement for driving rotation sheet printing machine has shifting clutches between first and second gear wheels and intermediate shaft, with which gear wheels can be selectively isolated from or connected to intermediate shaft - Google Patents

Abstract

The drive arrangement has a shifting clutch arranged between a first gear wheel and an intermediate shaft and another shifting clutch arranged between a second gear wheel and the intermediate shaft with which the gear wheels can be selectively isolated from or connected to the intermediate shaft.

Description

The The invention relates to a device for driving a rotary printing press with at least one printing and / or coating unit, wherein in each printing and / or coating unit a cylinder carrying a printing form with a Direct drive is coupled.

printing presses have a variety of facilities, in printing, setup or maintenance of the press must be driven. In classical constellations are all to be driven facilities of a printing machine of a so-called main drive of the printing press driven. All to be driven devices are then usually mechanically over Gear or timing belt connected to the main drive.

In other concepts for printing presses at least some of the driven devices of a printing press are driven by an engine. Thus, drives are already known from the prior art, in which the previously customary mechanical drive coupling of the plate cylinder and / or blanket cylinder is permanently canceled with the central drive wheel train and these rotary bodies are each driven separately separately ( DE 196 23 224 A1 . DE 199 03 869 A1 ).

A printing press whose printing units have self-driven plate cylinder is from the EP 0 834 398 B1 known. The driven by the main drive rubber cylinder of the printing units and the self-propelled plate cylinders are coupled via a respective switchable coupling or decoupled.

From the EP 812 683 A1 is a sheetmaking machine known with a controllable direct drive for a single driven cylinder. From a provided at least for the transport of the sheet material by means of sheet guiding cylinders gear train of a sheet-fed press a plate cylinder or a rubber cylinder is decoupled by means of single drive directly operable. Due to the individual and independent of the other cylinders driven plate cylinder plate in addition to printing correction possibilities also other operations such as plate replacement or cleaning of cylinders realized. The inking unit associated with the plate cylinder has at least one roller, which can be driven by a direct motor drive. Alternatively, certain inking rollers are coupled on the drive side with the gear train on the main drive. A disadvantage of this solution is that the workflows, especially when washing the cylinder, must be performed individually or sequentially.

In DE 10 2004 039 588 A1 a device for controlling a processing machine for sheet material is described, in which the inking unit is temporarily separated by the arrangement of a switchable clutch from the main drive and gear train of the sheet guiding cylinder and coupled with the directly driven, the printing plate bearing cylinder. On the drive side, the inking unit is operable, in particular for the cleaning processes, via the directly driven cylinder carrying the printing plate. After completion of the cleaning process, the drive connection of the inking unit to the directly driven, the printing plate bearing cylinder is separated and the inking unit mechanically coupled again into the main drive and gear train of the sheet guiding cylinder.

By the use of only one clutch but are the possibilities for performing various operations limited.

A drive of high flexibility for the optional execution of various operations is in DE 10 2005 036 786 B3 proposed.

Therefor is on the printing plate cylinder carrying a two-part trained Clutch gear arranged. The clutch gear consists of two gears, which are arranged in two wheel planes. Furthermore, this drive with a force-locking clutch system, specially designed a two-piece, individually switchable double clutch. In case of failure of the single drive allows the clutch system the drive of the printing plate bearing Cylinder by means of the main drive.

The But switching system has a complicated structure.

There it arranged on the shaft journal of the printing plate carrying cylinder is, it must be in relatively large sizing and with great precision.

Of the Invention is therefore based on the object, while maintaining a high flexibility in carrying out operations to propose a cost effective drive solution.

According to the invention the object is achieved by a device having the features of 1 , Claim solved. Advantageous embodiments emerge from the subclaims.

The solution according to the invention has the advantage that a printing machine with high flexibility can be provided. Operating processes are preferably simultaneously or at least live offset feasible.

By the arrangement of an intermediate shaft becomes the possibility created, small-sized and thus both cost-saving as well as space-saving switching systems. The coupling processes can be made more effective.

On the intermediate shaft two clutches are arranged. The clutches are preferably carried out pneumatically actuated. When Design come multi-plate clutches or gear couplings in question. The clutches are selected by a control device depending on Operating mode operable.

At the parallel running washing with adjustable as needed Washing speeds is not only a short cleaning time achievable but also a high cleaning quality.

at Failure of a single drive of the printing plate bearing cylinder allows the circuit system, through a mechanical Connecting the previously individually driven cylinder with the drive wheel train and main drive of the printing press continue to operate.

Farther can participate in the same switching position in a non-pressure Printing unit of a multi-color printing press the single drive for The plate cylinder can be used to apply a braking torque to the gear train feed. The single drive is controlled for this purpose, that essentially a uniform tension ensures the printing press driving gear transmission is. Load torque dependent printing errors in not at pressure participating printing units, caused by lack of color fission and missing frictional forces, can with the invention safely avoided and the print quality noticeable be improved.

at This mode of operation of a printing unit are the inking unit and the Dampening unit off the plate cylinder, d. H. the pressure contact between the rollers and the plate cylinder is canceled. advantageously, The inking unit can be replaced by an additional clutch from the gear train decoupled and thus shut down.

in the The invention will be explained by way of example below. The accompanying drawings represent:

1 : Schematic representation of a sheet-fed printing machine

2 : Drive scheme for a printing unit of a sheet-fed single-disc printing machine

3 : Drive scheme for a printing unit with decoupled inking unit

In 1 is a sheet-fed press with a sheet feeder 3 , several printing units 1 , a coating plant 2 as well as a display 4 shown. Every printing unit 1 consists of a trained as a printing cylinder sheet guiding cylinder 5 a rubber cylinder 6 and a plate cylinder 7 , The plate cylinder 7 is an inking unit 8th and Be may in the direction of rotation of the plate cylinder 7 in front of the inking unit 8th a dampening unit 9 assigned.

The coating plant 2 consists of a metering device 10 , a paint application roller 11 and a paint form cylinder 12 ,

The sheet transport takes place through the sheet guiding cylinder 5 , The drive is via the central gear train of the skin drive 13 , Likewise are rubber cylinders 6 and inking unit 8th to the central gear train of the main drive 13 coupled. The plate cylinders 7 and paint cylinder 12 are decoupled from the central gear train by a single drive 14 individually drivable.

Every rubber cylinder 6 , each plate cylinder / plate cylinder 7 and every paint form cylinder 12 can be assigned a cleaning device. Every inking unit 8th has an inking unit washing device (not shown).

In 2 is the drive scheme for a printing unit 1 a rotary sheet printing machine shown.

The trained as a printing cylinder sheet guiding cylinder 5 and the rubber cylinder 6 are by means of gear train and main drive 13 drivable.

The plate cylinder 7 is from the gear train and main drive 13 decoupled by a single drive 14 drivable. From the single drive 14 only the drive motor is shown.

The single drive 14 has a detachable end on the plate cylinder 7 arranged rotor and a concentrically arranged on the side frame releasably fixed stator. From the plate cylinder 7 associated inking unit 8th is at least one inking roller 17 from the gear train and main drive 13 drivable.

At the plate cylinder 7 is an intermediate gear in a first gear plane 15 freely rotatably arranged and in a second gear plane, a cylindrical gear 16 firmly arranged. The intermediate gear 15 is part of the continuous gear train, the All cylinders, rollers and drums to be driven centrally and across the drive unit from the main drive 13 can be fed.

Between the plate cylinder 7 and the inking roller 17 of the inking unit 8th , preferably a distribution cylinder, is an intermediate shaft 18 arranged at the first gear 19 and a second gear 20 is arranged so freely rotatable that the cylinder gear 16 at the plate cylinder 7 with the first gear 19 at the intermediate shaft 18 and the intermediate gear 15 at the plate cylinder 7 with the second gear 20 at the intermediate shaft 18 is engaged.

At the intermediate shaft 18 is flush spaced from the first gear 19 a first clutch 21 and aligned spaced from the second gear 20 a second clutch 22 firmly arranged. The clutches 21 and 22 are executed in the embodiment as a pneumatic toothed couplings.

A third gear 23 is with the intermediate shaft 18 firmly connected. This third gear 23 is engaged with a downstream gear for driving the inking unit 8th ,

The cylinder gear 16 at the plate cylinder 7 is engaged with a gear 24 on the drive shaft of the dampening roller 25 , A clutch 26 - assigned to the gear 24 on the drive shaft of the dampening roller 25 - allows the coupling or uncoupling of the individual drive 14 to the dampening unit 9 , This clutch 26 is executed in the embodiment as a pneumatic multi-plate clutch.

In 3 is the drive scheme for a printing unit 1 with one over an inking roller 17 drivable inking unit 8th shown, with the optional inking roller 17 from the intermediate shaft 18 can be disconnected and shut down. Distanced from the first and second gear 19 . 20 is a third gear 27 freely rotatable on the intermediate shaft 18 arranged. This third gear 27 is engaged with a downstream gear for driving the inking unit roller 17 , Also the third gear 27 is at the intermediate shaft 18 a clutch 29 assigned.

For the operation of the invention Facility:

In a first switching position, the first clutch is 21 the intermediate shaft 18 to the first gear 19 disengaged and the second clutch 22 to the second gear 20 engaged. Here is the over the first gear 20 from the main drive 13 and gear train incoming drive on an inking roller 17 of the inking unit 8th fed. The plate cylinder 7 is by means of single drive 14 driven.

These Switching position is preferably used for the printing operation.

Should be together with a dampening unit 9 In addition, the clutch will be printed 26 on the dampening roller 25 engaged.

As a result, the drive torque of the single drive 14 to the dampening unit 9 forwarded. If z. B. printed in the dry offset process, the clutch remains 26 decoupled.

at Pressure interruption is preferably in this switching position Pressure plate change feasible.

In a second switching position, the second clutch is 22 the intermediate shaft 18 to the second gear 20 disengaged and the first clutch 21 to the first gear 19 engaged. Here is the on the second gear 19 from the single drive 14 incoming drive on a roller of the inking unit 8th fed.

These Switching position is preferably for the cleaning process used.

The inking unit 8th can in this switch position parallel to the rubber cylinder 6 and / or formed as a printing cylinder sheet guiding cylinder 5 getting washed.

Here are the rollers to be cleaned of the inking unit 8th synchronous with the plate cylinder 7 and if necessary, the dampening roller 25 driven in a first peripheral speed and driven by Räderzug cylinder (blanket cylinder 6 , Printing cylinder 5 ) is driven for cleaning at a second peripheral speed.

After completion of the washing process, the temporary coupling of the directly driven plate cylinder 7 with a roller of the inking unit 8th disconnected and realized again the first switching position for the printing operation. This switch position can also be used to shrink the color.

In a third switching position, both the first clutch 21 as well as the second clutch 22 the intermediate shaft 18 to the first gear 19 and to the gear 20 disengaged. The first gear 19 and the second gear 20 the intermediate shaft 18 on which a drive from the main drive 13 or from the single drive 14 is fed, rotate freely and do not transfer the drive further.

Variant: clutch 26 is engaged.

In this switching position is the inking unit 8th shut down and the dampening unit 9 driven. This switching position is preferably for the pre-wetting of the printing material in the first printing unit in the transport direction 1 selected. The first printing unit 1 following printing units 1 are set to print mode.

Variant: clutch 26 is disengaged.

In this switching position is the inking unit 8th and the dampening unit 9 stopped.

The single drive 14 drives the plate cylinder 7 at.

In a fourth switching position, both the first clutch 21 as well as the second clutch 22 the intermediate shaft 18 to the first gear 19 and to the second gear 20 engaged.

In this switching position, the plate cylinder 7 , the inking unit 8th and if necessary, the dampening roller 25 of the dampening unit 9 from the main drive 13 be driven via the gear train.

This switch position can z. B. in case of failure of the single drive 14 be used for the printing operation.

The motor of the directly driven plate cylinder 7 is de-energized and turns freely with.

This switching position is also suitable for a braking torque in a printing unit not involved in the pressure 1 to feed into the gear train.

In this mode of operation is the inking unit 8th deselected and from the plate cylinder 7 turned off, leaving no ink on the plate cylinder 7 is transmitted. The inking unit 8th but is driven further. To damage the rollers of the inking unit 8th To avoid pressure oil or roller paste must be introduced. Should the printing unit be used for a subsequent print job 1 be re-integrated into the printing operation, the pressure oil or the roller paste must be laboriously removed.

An advantage is therefore a drive scheme according to 3 , The fourth switching position of the two clutches 21 . 22 can now with a disengaged third clutch 28 be combined. In this switching position is the inking unit 8th stopped. With the single drive 14 a braking torque is fed into the gear train.

1

printing unit

2

coating unit

3

sheet feeder

4

display

5

Sheet guiding cylinder

6

rubber cylinder

7

Printing form cylinder, plate cylinder

8th

inking

9

dampening

10

metering

11

Lacquer application roller

12

Coating form cylinder

13

main drive

14

individual drive

15

intermediate gear

16

cylinder gear

17

Inking roller

18

intermediate shaft

19

gear

20

gear

21

clutch

22

clutch

23

gear

24

gear

25

Dampener roller

26

clutch

27

gear

28

clutch

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19623224 A1 [0003]
• - DE 19903869 A1 [0003]
• - EP 0834398 B1 [0004]
• - EP 812683 A1 [0005]
• DE 102004039588 A1 [0006]
• DE 102005036786 B3 [0008]

Claims (13)

Device for driving a rotary printing press with at least one printing unit ( 1 ) and / or coating unit ( 2 ), whereby each printing / coating unit ( 1 . 2 ) one with a single drive ( 14 ) coupled printing forme / paint forme cylinder ( 7 . 12 ), which is provided by a sheet guiding cylinder ( 5 ) connecting gear train, on which a main drive ( 13 ) acts mechanically decoupled and in a predeterminable manner with respect to the sheet guiding cylinders ( 5 ) is driven by an engine, wherein the printing forme / Lackformzylinder ( 7 . 12 ) via the gear train from the main drive ( 13 ) via an intermediate shaft ( 18 ) drivable inking unit ( 8th ) or via the gear train from the main drive ( 13 ) via an intermediate shaft ( 18 ) drivable coating unit ( 2 ), and on the printing plate / coating cylinder ( 7 . 12 ) a cylinder gear ( 16 ) is fixed, wherein on the intermediate shaft ( 18 ) a first gear ( 19 ) connected to the cylinder gear ( 16 ) meshes and in alignment with this a second, connected to the gear train gear ( 20 ), characterized in that between the first gear ( 19 ) and the intermediate shaft ( 18 ) and between the second gear ( 20 ) and the intermediate shaft ( 18 ) each have a clutch ( 21 . 22 ) is arranged, with the gears ( 19 . 20 ) optionally with the intermediate shaft ( 18 ) are separable or connectable. Apparatus according to claim 1, characterized in that for connection of the gear train with the second gear ( 20 ) of the intermediate shaft ( 18 ) a freely rotatable on the axis of the printing forme / Lackformzylinders ( 7 . 12 ) stored intermediate gear ( 15 ) is provided. Apparatus according to claim 1, characterized in that the gear train is a with each printing forme cylinder ( 7 ) upstream rubber cylinder ( 6 ) connected gear, each with the intermediate gear ( 15 ) is engaged. Apparatus according to claim 1, characterized in that the gear train is a with each paint form cylinder ( 12 ) adjacent sheet guiding cylinder ( 5 ) connected gear, each with the intermediate gear ( 15 ) is engaged. Apparatus according to claim 1, characterized in that the printing form cylinder ( 7 ) a dampening unit ( 9 ), which by means of a clutch ( 26 ) with the cylinder gear ( 16 ) of the printing forme cylinder ( 7 ) and from the single drive ( 14 ) is drivable. Device according to claim 1, characterized in that on the intermediate shaft ( 18 ) in alignment with the first and second gears ( 19 . 20 ) a third gear ( 27 ), over which the inking unit ( 8th ) is drivable, and that between the third gear ( 27 ) and the intermediate shaft ( 18 ) a third clutch ( 28 ) is arranged, with the third gear ( 27 ) optionally with the intermediate shaft ( 18 ) is connectable or separable. Apparatus according to claim 1, 5 and 6, characterized in that the clutches ( 21 . 22 . 26 . 27 ) are pneumatic couplings. Apparatus according to claim 1, 5 and 6, characterized in that the clutches ( 21 . 22 . 26 . 27 ) are coupled to a control device. Apparatus according to claim 1 and 8, characterized in that with the control device, a first switching position is adjustable, wherein the first clutch ( 21 ) of the intermediate shaft ( 18 ) to the first gear ( 19 ) disengaged and the second clutch ( 22 ) to the second gear ( 20 ) is engaged. Apparatus according to claim 1 and 8, characterized in that with the control device, a second switching position is adjustable, wherein the second clutch ( 22 ) of the intermediate shaft ( 18 ) to the second gear ( 20 ) disengaged and the first clutch ( 21 ) to the first gear ( 19 ) is engaged. Apparatus according to claim 1 and 8, characterized in that the control device, a third switching position is adjustable, in which both the first clutch ( 21 ) as well as the second clutch ( 22 ) of the intermediate shaft ( 18 ) to the first gear ( 19 ) and the second gear ( 20 ) are disengaged. Apparatus according to claim 1 and 8, characterized in that with the control device, a fourth switching position is adjustable, in which both the first clutch ( 21 ) as well as the second clutch ( 22 ) of the intermediate shaft ( 18 ) to the first gear ( 19 ) and second gear ( 20 ) are engaged. Apparatus according to claim 12, characterized in that with the control device, the fourth shift position and the third clutch ( 28 ) is controllable, in which both the first clutch ( 21 ) as well as the second clutch ( 22 ) of the intermediate shaft ( 18 ) to the first gear ( 19 ) and second gear ( 20 ) are engaged and the third clutch ( 28 ) of the intermediate shaft ( 18 ) to the third gear ( 27 ) is disengaged.