DE102016205348A1 - Drive arrangement for a sheet processing machine - Google Patents

Abstract

The invention relates to a drive assembly for a sheet processing machine having a main drive for driving at least the sheet transport serving cylinder of the sheet processing machine and with an inking unit drive for driving an inking unit of the sheet processing machine. The drive arrangement is characterized in that it further comprises a differential gear, which is mechanically coupled to the inking unit, with a drive shaft, and with a forme cylinder.

Description

The invention relates to a drive arrangement for a sheet processing machine with a main drive for driving at least the sheet transport serving cylinder of the sheet processing machine and with an inking unit drive for driving an inking unit of the sheet processing machine according to the preamble of claim 1.

Dyeing machines in sheet-fed machines, also known as roller mills, are usually driven by the machine's main drive and rotate synchronously at a constant speed. Interventions in the speed regime of the inking unit for a variety of workflows are only possible via other existing drive motors or via additional drive motors and / or individual drives.

The WO 2009/097912 A1 shows an inking unit of a printing machine for coloring a forme cylinder. The inking unit comprises a roller train with at least one first distribution cylinder, which can be driven by a drive motor. Between the first distribution cylinder and the drive motor, a freewheel is arranged. The first distribution cylinder is preferably driven in the production direction of rotation only by friction with adjacent rollers, while it is rotationally driven against the direction of production via the drive motor. The inking unit can have at least one second distribution cylinder, which is additionally forcibly driven both in and against the production direction of rotation by a drive motor. Both distribution cylinders can be driven against the direction of production by a common drive motor. In this way, for example, in inking unit washing or doctoring with a direction of rotation opposite to the direction of production rotation, a better result can be achieved.

The invention has for its object to provide a drive assembly for a sheet processing machine available, which allows adjusting the speed of the inking unit during machine operation and in a variety of operations without coupling operations to create.

The object is achieved by the feature of claim 1. The drive assembly is provided for a sheet processing machine. The sheet processing machine comprises a main drive for driving at least the sheet transporting cylinder and an inking unit drive for driving an inking unit. The drive of the at least the sheet transport serving cylinder is preferably via a gear train. The drive assembly further comprises a differential gear, which with the inking unit of the sheet processing machine, with a drive shaft of the sheet processing machine and with a forme cylinder of the sheet processing machine. is mechanically coupled so that torques between the inking unit, the drive shaft and the forme cylinder are transferable. The differential gear thus has at least three axes. The differential gear is designed to compensate for the rotational speeds of the inking unit, the drive shaft and the forme cylinder. The form cylinder may also be referred to as a plate cylinder.

The differential may be, for example, a differential gear or a Gleitkeilgetriebe. Preferably, the differential gear is formed by a planetary gear. The epicyclic gearing is preferably designed as a five-limb simple return epicyclic gearing. It initially includes a connected to the drive shaft central wheel. The central wheel is connected in embodiments with the main drive driven by the form cylinder fixed to the drive shaft and thus rotates at main drive speed. In embodiments which comprise a single-cylinder single-cylinder drive, in particular a direct-on-die cylinder drive for driving the forme cylinder, the central wheel may be fixedly or rotatably connected to the drive shaft. As is known, the single-cylinder single-cylinder drive is directly connected to the forme cylinder with or without the interposition of a transmission. When firmly connected to the drive shaft, the central wheel rotates again at the main drive speed. In contrast, when rotatably connected to the drive shaft, the center wheel is driven by the single-cylinder single-cylinder drive and therefore rotates at single-cylinder single-speed drive. The planetary gear transmission further comprises a rotatably mounted on the drive shaft, driven by the inking unit drive web, at least one planet gear rotatably mounted on the web and a rotatably mounted on the drive shaft ring gear. The ring gear is coupled to drive the inking unit to the inking unit. Usually, three or four planet gears are used. The drive shaft is preferably a forme cylinder drive shaft. Alternatively, the drive shaft may also be a module jump axis.

By single-cylinder single-cylinder drive is here to be understood a drive which is not in mechanical, in particular in positive drive connection with other cylinders of the printing press.

In the printing operation, the epicyclic gearing operates in the coupling point, ie the rotational speeds of the central gear, ring gear and land are the same size. The speed of the web corresponds to the speed of the inking unit drive. The speed of the The inking unit drive is regulated as a function of the main drive speed. The web speed corresponds to the main drive speed during printing operation. At the bridge axis, a torque is fed in accordance with the load. In the most diverse workflows, such as roller washing or paint shrinkage, the speed can be chosen arbitrarily with the inking unit drive for the inking unit. This output speed is uniquely determined by the number of revolutions of the main drive or single-cylinder single-cylinder drive and the inking unit drive. The planetary gear is operated in this case as summing.

A major advantage of the drive assembly is that it allows adjustment of the rotational speed of the inking unit of a sheet processing machine during machine operation and in various modes without coupling operations. The speed of the inking unit is controllable at any constant engine speed (main drive speed) and can be set during machine running. As a result, for example, washing speeds can be selected as a function of the pollution and independently of the engine speed. Furthermore, the rotational speeds for color shrinkage can be varied as desired in dependence on the viscosity of the ink or the color coat thickness, likewise independently of the present engine speed. For different applications, speed profiles, i. H. Speed changes during the process, defined, which allow an optimized process flow. Thus, for example, the color shrinkage and washing can be done with appropriately adjusted optimized speeds. The planetary gear has the great advantage that different output speeds and speed changes of the inking do not affect the torque of the main drive.

According to a first advantageous embodiment, the drive assembly further comprises a first clutch between the epicyclic gearbox and the forme cylinder. When the first clutch is closed, the differential gear and the forme cylinder are coupled and when the first clutch is open, the differential and the forme cylinder are decoupled. When the clutch is open, the speed of the inking unit can be freely selected for other processes. At the same time a plate change can be carried out. The plate change takes place with the main drive in embodiments which use the form cylinder driven by the main drive. In embodiments comprising the single-cylinder molding drive for driving the forme cylinder, the plate change is performed with the single-cylinder molding drive.

The arrangement of a first brake between the differential and the first clutch has proven to be advantageous. With the first brake, the speed introduced via the main drive or the single-cylinder form cylinder drive to the clutch switching process is selectively braked to zero.

Embodiments with the main cylinder driven by the main drive may preferably have a second clutch between the differential gear and the inking unit. When the second clutch is closed, the differential gear and the inking unit are coupled and with the second clutch open, the epicyclic gearing and the inking unit are decoupled. Furthermore, a third clutch between the forme cylinder and the main drive can preferably be arranged. When the third clutch is closed, the forme cylinder and the main drive are coupled and when the third clutch is open, the forme cylinder and the main drive are decoupled. In this context, the use of a second brake between the differential gear and the second clutch has proven to be advantageous. By the second brake is carried out at a separate second clutch targeted braking of the inking unit to zero speed. With simultaneously separate third clutch, which causes a decoupling of the forme cylinder of the gear train, a plate change can be performed by means of inking unit drive while the machine is running. When the third clutch is closed, the plate is changed using the main drive. An inking unit with a low delta, which thus has a small circumferential speed difference from the forme cylinder, can be used for smoothing or ironing the printing plate. When using the third clutch, it is possible to rotate the inking unit independently of the machine running to perform a variety of operations, such as roller washing or Farbeinlaufen. In this case, the central gear of Umlaufrädergetriebes is braked by means of the first brake, possibly up to zero speed.

An advantageous embodiment uses to drive the inking a ring gear with an external toothing. Alternatively or additionally, the ring gear can be connected to an externally toothed spur gear. External teeth or externally toothed spur gear are coupled with the inking unit accordingly.

In addition, it should be pointed out that in addition a dampening unit can be driven by means of a transmission which can be carried out in various ways.

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

Show it:

1 a schematic representation of a sheet processing machine;

2 a schematic representation of a Oberbaumoduls a printing unit;

3 a schematic partial view of the sheet processing machine, which has a drive arrangement in a first embodiment;

4 a simplified representation of a Umlaufrädergetriebes used in the first embodiment;

5 a schematic partial view of the sheet processing machine having the drive assembly in a second embodiment;

6 a simplified representation of the Umlaufrädergetriebes used in the second embodiment.

1 shows a sheet processing machine 01 , The sheet-processing machine used for processing the sheet-shaped substrate comprises, for example, a sheet feeder 02 designated Substratzufuhreinrichtung 02 , for example, as a sheetfed 03 designated investment facility 03 and one example, as a sheet delivery 04 designated substrate delivery device 04 , Between the substrate supply device 02 and the substrate delivery device 04 are arranged one or more, also known as plants processing stages that are designed for example as a printing unit, coating unit, drying plant, calendering or film transfer plant or in any other suitable manner. In the case of the formation of the sheet processing machine 01 as a printing machine, in particular sheet-fed printing press, is at least one of the works by a printing unit 05 . 06 in particular offset printing unit formed, preferably one or more coating units 07 are subordinate. In the case of several printing units 05 . 06 can also be the arrangement of one or more Lackwerke 07 between the printing units 05 . 06 be provided.

Unless explicitly differentiated, the term "sheet-shaped substrate", in particular a printing substrate, especially the sheet, should in principle encompass any substrate present in planar and sectioned form, that is, also board-like or possibly plate-shaped substrates, ie also sheets or plates , The arcuate substrate or the sheet thus defined is preferably made of paper or cardboard, d. H. formed as paper or cardboard sheet, but may in principle be formed by sheets, sheets or possibly plates made of plastic, cardboard, glass or metal.

2 shows a superstructure module 08 of the printing unit 05 . 06 , Every printing unit 05 . 06 includes z. B. in the area of a so-called. Oberbaumoduls 08 , in particular a printing unit superstructure 08 one in particular as a forme cylinder 09 , z. B. as a plate cylinder 09 , executed printing cylinder and in one embodiment for the offset printing process also one in particular as a transfer cylinder 10 , z. B. as a rubber cylinder 10 executed printing cylinder. Furthermore, the printing unit includes 05 . 06 z. B. in the area of a so-called. Sub-module 12 , in particular printing unit substructures 12 a cylinder 13 , in particular as a pressure cylinder 13 or impression cylinder trained printing cylinder and one as a cylinder 14 , in particular transfer drum 14 designated transfer drum 14 ,

The printing works 05 . 06 are, as also recognizable on the schematically illustrated structure in the figures, preferably modular, such that the printing unit superstructure 08 through a first module 08 , z. B. a so-called 08 , and the printing unit base 12 through a second module 12 , z. B. a so-called sub-module 12 , given is. In the modular design, the upper module comprises 08 Here, for example, the form cylinder 09 and in one embodiment for the offset printing process, the transfer cylinder 10 , The sub-module 12 in particular, the impression cylinder 13 and Z. B. the transfer drum 14 on. As "modular" or module can be understood in this context, a structural unit, which is already incorporated with their main components or at least their connection elements in a frame as a whole in the machine and, if necessary, to dismantle again, the frame as one of the rest Machine frame releasable frame is formed.

In the case of the modular design, the horizontal division between Oberbaumodul runs 08 and sub-module 12 preferably between the rubber cylinder 10 and the impression cylinder 13 , The vertical dividing line between the substructure modules 12 or between the printing units 05 . 06 is seen in the sheet transport direction mainly between the transfer drum 14 of the printing unit 05 and the impression cylinder 13 of the following printing unit 06 placed.

The above, z. B. as a rubber cylinder 10 executed transfer cylinder 10 can at least one fastening device with a fastening means 15 for holding and / or tensioning a blanket. For example, a first clamping and / or clamping channel 17 in which clamping and / or tensioning organs 15 . are arranged in particular for mounting a blanket, be provided.

The rubber cylinder 10 is regarding the direction of the effective color flow of z. B. as a plate cylinder 09 trained form cylinder 09 upstream, the z. B. also at least one fastening device with a fastening means 18 for holding and / or clamping a printing plate, in particular pressure plate. The plate cylinder 09 can a second clamping and / or clamping channel 19 have, in which z. B. at least one clamping and / or clamping member 18 for mounting a pressure plate on the lateral surface of the plate cylinder 09 located.

The printing unit 05 . 06 can in the area of the printing unit superstructure 08 or upper module 08 an automatic or semi-automatic plate changer 20 be assigned.

For coloring the z. B. formed as a printing plate printing plate is at least one inking unit 22 intended. The inking unit 22 may be designed as a short inking unit, as a lifting inking unit, as a film inking unit or in any other suitable manner. In the case of the preferred training as a lifting inking unit here 22 includes the inking unit 22 at least one color supply 23 , for example, as a squeegee or ink fountain 23 can be formed, at least one through the ink supply 23 to be colored, for example as a ductor roller 24 or preferably as an ink fountain roller 24 trained ink pickup roller 24 , one or more other inking rollers 25 and preferably one between the ink fountain roller 24 trained ink pickup roller 24 and a first inking roller 26 oscillating lifting roller 27 , z. B. a so-called. Color lifter 27 , The inking rollers 25 differ, for example, positively driven Farbreibwalzen 28 (hatched drawn) and in inking rollers 29 that z. B. only by friction of the Farbreibwalzen 28 are driven. For applying the through the inking rollers 25 prepared paint on the printing plate are in the exemplary embodiment preferably four inking rollers 30 intended.

In the direction of rotation in operation 32 of the plate cylinder 09 is the inking rollers 30 optionally a dampening roller 33 upstream. This is a dampening unit 34 assigned, which is intended for applying dampening liquid to the surface of the printing plate. Between one in the direction of rotation 32 of the plate cylinder 09 first inking roller 30 and the dampening roller 33 may be a preferably switchable bridge roller 35 be provided. This functionally establishes a connection between the dampening unit 34 and inking unit 22 possible. In the case of the switchable design, this allows several operating modes to optimize the supply of wet liquid.

3 shows a schematic partial view of the sheet processing machine 01 which is a drive arrangement 37 in a first embodiment. Only the explanation of the drive arrangement 37 required components of the sheet processing machine 01 shown. These include the plate cylinder 09 and the inking unit 22 ,

The plate cylinder 09 is by means of a first gear 38 rotationally driven. The gear 38 stands with a second gear 39 engaged. Both gears 38 . 39 are part of a continuous, serving for sheet transport gear train. The gear train 38 . 39 can be driven by a single main drive or by several individual, coupled in different places motors.

With the inking unit 22 and the plate cylinder 09 is a differential 40 , in particular a planetary gear 40 mechanically coupled, which with an inking unit drive 41 connected is. The planetary gearbox 40 will be referred to below with reference to 4 explained in more detail. It initially includes one with a drive shaft 42 connected central wheel 43 , The drive shaft 42 is the drive shaft of the plate cylinder in the illustrated embodiment 09 , The plate cylinder 09 is in a side frame 46 of the printing unit 05 rotatably mounted. The central wheel 43 is either fixed or rotatable with the drive shaft 42 connected.

A rotatable connection of the central wheel 43 is only possible with versions which have a single-cylinder single-cylinder drive 55 (please refer 5 and 6 ) for driving the plate cylinder 09 use. With rotatable connection of the central wheel 43 with the drive shaft 42 becomes the central wheel 43 by single-cylinder single-cylinder drive 55 driven. In contrast, this gets stuck with the drive shaft 42 connected central wheel 43 driven at the speed of the main drive.

The planetary gearbox 40 further comprises a rotatable on the drive shaft 42 stored bridge 44 , The jetty 44 is by means of inking unit drive 41 driven. The speed of the bridge 44 thus corresponds to the speed of the inking unit drive 41 , On the jetty 44 is at least one planetary gear 45 rotatably mounted. Preferably, on the bridge 44 a plurality of planetary gears, preferably three or four planet gears rotatably mounted. With the planet wheel 45 is rotatably mounted on the drive shaft 42 stored ring gear 47 engaged. The ring gear 47 is with the inking unit 22 coupled to power this. For this purpose, the ring gear 47 preferably one External teeth on. Alternatively, the ring gear 47 also be connected to an externally toothed spur gear.

In printing operation, the planetary gear works 40 in the coupling point, at which the speeds of Zentralrad 43 , Ring gear 47 and footbridge 44 are the same size. At the bridge axis, a torque is fed in accordance with the load. In the most diverse work processes (roller washing, paint shrinking) can for the inking 22 the speed with the inking unit drive 41 be chosen arbitrarily. It is determined by the speed of the main drive or single-cylinder single-cylinder drive 55 and the inking unit drive 41 clearly defined. The planetary gearbox 40 is then operated as summation.

In the 3 shown embodiment of the drive assembly further comprises a first clutch 48 between epicyclic gears 40 and plate cylinder 09 on. With the first clutch closed 48 are epicyclic gearboxes 40 and plate cylinder 09 coupled while open with the first clutch 48 are decoupled. By first clutch 48 can thus the plate cylinder 09 from the epicyclic gearbox 40 be separated or connected to this. With open first clutch 48 is a freely selectable speed for the inking unit 22 , For example, for the roller washing or color shrinkage, possible. At the same time a plate change can be performed, which is done with the help of the main drive. Between first clutch 48 and epicyclic gearing 40 is a first brake 50 arranged. Through the first brake 50 For example, the speed introduced via the main drive to the clutch switching process can be selectively braked to zero.

Between epicyclic gears 40 and inking unit 22 is a second clutch 52 arranged, which in the closed state Umlaufrädergetriebe 40 and inking unit 22 connects and in the open state the inking unit 22 from the epicyclic gearbox 40 separates. When the second clutch is open 52 a plate change can be done with the help of the main drive. One between second clutch 52 and epicyclic gearing 40 arranged second brake 53 with separate second clutch ensures targeted braking of the inking unit 22 at zero speed.

An between plate cylinder 09 and main drive arranged third clutch 54 causes a separation of the plate cylinder 09 from the gear train 38 . 39 by doing that with the gear 38 of the plate cylinder 09 engaged gear 39 from the gear train 38 . 39 is disconnected. With separate third clutch 54 and at the same time separate second clutch 52 can a plate change by means of inking unit drive 41 be carried out while the machine is running. This is in several printing units 05 . 06 possible at the same time. Through the third clutch 54 can the inking unit 22 be rotated independently of the machine.

The couplings 48 . 52 . 54 are preferably coupled to a control device (not shown) and controlled via corresponding signals.

5 shows a schematic partial view of the sheet processing machine 01 that the drive assembly 37 in a second embodiment. The planetary gear used in this embodiment 40 is in 6 shown. Unlike the in 3 the embodiment shown comprises the drive assembly 37 here a single-cylinder single-cylinder drive 55 for driving the plate cylinder 09 , The drive arrangement 37 includes only the first clutch 48 between epicyclic gears 40 and plate cylinder 09 , The central wheel 43 is switchable via the first clutch 48 with the drive shaft 42 connected. It is both a fixed and a rotatable connection between the central wheel 43 and drive shaft 42 possible. In the presence of a firm connection, the central wheel rotates 43 with main drive speed and a rotatable connection becomes the central wheel 43 from the single-cylinder single-cylinder drive 55 driven. When the first clutch is open 48 is again a freely selectable speed for the inking unit 22 possible. In addition, a plate change by means of single-cylinder form cylinder 55 respectively. About the first brake 50 becomes the over the single-cylinder single-cylinder drive 55 The speed applied to the clutch switching process is decelerated to zero.

LIST OF REFERENCE NUMBERS

01

 Sheet processing machine

02

 Sheet feeder, substrate feeder

03

 Sheet plant, investment facility

04

 Sheet delivery, substrate delivery device

05

 printing unit

06

 printing unit

07

 coating unit

08

 Overhead module, printing unit superstructure, module

09

 Form cylinder, plate cylinder

10

 Transfer cylinder, rubber cylinder

11

12

 Sub-module, printing unit base, module

13

 Cylinder, impression cylinder

14

 Cylinder, transfer drum, transfer drum

15

 Fastening means, clamping and / or clamping member

16

17

 Clamping and / or clamping channel, first

18

 Fastening means, clamping and / or clamping member

19

 Clamping and / or clamping channel, second

20

 Plate changing device

21

22

 Inking unit, lifting inking unit

23

 Color stock, color box

24

 Ink pickup roller, ink fountain roller, fountain roller /

25

 Inking roller

26

 Ink fountain roller, first

27

 Lifting roller, color lifter

28

 Color rubbing roller, forcibly driven

29

 Inking roller, driven by friction

30

 Inking roller

31

32

Direction of rotation ( 09 )

33

 Dampener roller

34

 dampening

35

 bridge roller

36

37

 drive arrangement

38

Gear ( 09 )

39

 gear

40

 Differential, epicyclic gearbox

41

 Inking drive

42

 drive shaft

43

 central wheel

44

 web

45

 planet

46

 side frame

47

 ring gear

48

 Clutch, first

49

50

 Brake, first

51

52

 Clutch, second

53

 Brake, second

54

 Third clutch

55

 Form cylinder single drive

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2009/097912 A1 [0003]

Claims (10)

Drive arrangement ( 37 ) for a sheet processing machine ( 01 ), wherein the sheet processing machine ( 01 ) a main drive for driving at least the sheet transport serving cylinder ( 13 . 14 ) and an inking unit drive ( 41 ) for driving an inking unit ( 22 ), characterized in that it further comprises a differential ( 40 ), which with the inking ( 22 ), with a drive shaft ( 42 ), and with a form cylinder ( 09 ) is mechanically coupled. Drive arrangement ( 37 ) according to claim 1, characterized in that the differential gear ( 40 ) by a planetary gear ( 40 ) is formed, which one with the drive shaft ( 42 ) connected central wheel ( 43 ), one rotatable on the drive shaft ( 42 ), from the inking unit drive ( 41 ) drivable bridge ( 44 ), at least one on the jetty ( 44 ) rotatably mounted planet gear ( 45 ) and a rotatable on the drive shaft ( 42 ) stored ring gear ( 47 ), wherein the ring gear ( 47 ) to the inking unit ( 22 ) is coupled. Drive arrangement according to claim 2, characterized in that the forme cylinder ( 09 ) is drivable by the main drive, and that the central wheel ( 43 ) fixed to the drive shaft ( 42 ) connected is. Drive arrangement ( 37 ) according to claim 2 or 3, characterized in that it comprises a single-cylinder ( 55 ) for driving the forme cylinder ( 09 ), and that the central wheel ( 43 ) fixed or rotatable with the drive shaft ( 42 ) connected is. Drive arrangement according to one of claims 1 to 4, characterized in that the drive shaft ( 42 ) is formed by a form cylinder drive shaft. Drive arrangement according to one of claims 1 to 5, characterized in that it comprises a first clutch ( 48 ) between the differential ( 40 ) and the forme cylinder ( 09 ), wherein when the first clutch is closed ( 48 ) the differential ( 40 ) and the form cylinder ( 09 ) and when the first clutch is open ( 48 ) the differential ( 40 ) and the form cylinder ( 09 ) are decoupled. Drive arrangement according to claim 6, characterized in that it comprises a first brake ( 50 ) between the differential ( 40 ) and the first clutch ( 48 ) having. Drive arrangement according to claim 3, characterized in that it comprises a switchable second clutch ( 52 ) between the planetary gear ( 40 ) and the inking unit ( 22 ), wherein when the second clutch is closed ( 52 ) the epicyclic gearing ( 40 ) and the inking unit ( 22 ) are coupled and with open second clutch ( 52 ) the epicyclic gearing ( 40 ) and the inking unit ( 22 ) are decoupled. Drive arrangement according to claim 3 or 8, characterized in that it comprises a switchable third clutch ( 54 ) between the forme cylinder ( 09 ) and the main drive, wherein when the third clutch is closed ( 54 ) the form cylinder ( 09 ) and the main drive are coupled and with open third clutch ( 54 ) the form cylinder ( 09 ) and the main drive are decoupled. Drive arrangement according to claim 8 or 9, characterized in that it comprises a second brake ( 53 ) between the planetary gear ( 40 ) and the second clutch ( 52 ) having.

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