WO2011082915A1

WO2011082915A1 - Printing unit having a circumferential register adjusting device

Info

Publication number: WO2011082915A1
Application number: PCT/EP2010/068926
Authority: WO
Inventors: Peter Hummel; Robert Ortner; Jürgen Schölzig
Original assignee: Manroland Ag
Priority date: 2010-01-11
Filing date: 2010-12-06
Publication date: 2011-07-14
Also published as: DE102010000770B3

Abstract

The invention relates to an apparatus for printing a sheet printing material, having an impression cylinder, a plate cylinder (30) and an application device comprising at least one roll for printing ink or lacquer, it being possible for all the cylinders and rolls to be driven from the main drive during printing operation, wherein the plate cylinder (30) is assigned a circumferential register adjusting device (38) which comprises a circumferential register actuating drive (39), a circumferential register actuating spindle (37) and a drive gear wheel (34) that can be adjusted by the circumferential register actuating spindle, is mounted on the plate cylinder (30) and is designed as a fixed wheel. Mounted on the drive gear wheel (34) that can be adjusted by the circumferential register actuating spindle (37) is a drive gear wheel (44) designed as a freewheel. Connected between these two drive gear wheels (34, 44) is a clutch (45), which is engaged in the non-actuating state and couples these two drive gear wheels (34, 44) to each other in a form-fitting manner in such a way that the plate cylinder can be driven by the main drive via the drive gear wheel (44) designed as a freewheel, and which is disengaged in the actuating state and uncouples said two drive gear wheels (34, 44) from each other in such a way that the plate cylinder can be driven by an auxiliary drive (43) via the drive gear wheel (34) designed as a fixed wheel.

Description

PRINTING CIRCUIT WITH A COMPUTER SCREENING DEVICE

The invention relates to a device for printing an arcuate printing substrate with printing ink or varnish, namely a printing unit or a varnishing unit of a sheet-fed printing press, according to the preamble of claim 1.

A sheet-fed printing machine has at least one device for printing an arcuate printing substrate with printing ink or varnish. Devices for printing an arcuate substrate with ink are also referred to as printing units and devices for printing an arcuate substrate with paint as Lackwerke.

From the practice known printing units of a sheet-fed press have a form cylinder, a transfer cylinder, a printing cylinder, an inking unit and optionally a dampening unit. At least one printing forme, for example a printing plate, is arranged on the forme cylinder of a printing unit, wherein dampening means can be applied to the or each printing form positioned on the forme cylinder with the aid of the inking unit. The inking unit is therefore an applicator for printing ink on the or each positioned on the form cylinder printing plate. The forme cylinder rolls off the transfer cylinder, on which at least one transfer mold is positioned. The transfer cylinder rolls to form a printing nip for a sheet-shaped printing material to be printed on the printing cylinder, which leads to the printing material to be printed. The form cylinder of a printing unit is also referred to as a plate cylinder and the transfer cylinder as a rubber cylinder. A coating unit of a printing machine has at least one forme cylinder on which at least one coating form is positioned, a printing cylinder rolling on the forme cylinder, which together with the forme cylinder forms a printing gap for the printing material to be printed, as well as an applicator device with the aid of which or any paint mold positioned on the form cylinder can be applied. In contrast to printing units, therefore, no transfer cylinder is positioned in a coating unit between the impression cylinder and the forme cylinder.

In sheetfed presses, which have at least one main drive, but no direct drives for self-propelled driving of the forme cylinder of printing units, all cylinders and rollers of a printing unit are driven by a main drive in printing operation, via a plurality of meshing drive gears. The present invention relates to a ne designed as a printing unit or coating unit device for printing an arcuate substrate with ink or paint, which has no direct drive for self-propelled motor cylinders or rollers of the printing unit in the printing operation, in which therefore all cylinders and rollers of the Device driven from the main drive.

Fig. 1 shows a partial cross-section through a designed as a printing unit, known from the prior art apparatus for printing a sheet-shaped substrate with ink in the form of a forme cylinder 10 and a rolling on the forme cylinder 10 transfer cylinder 1 1, wherein in the printing operation of both the forme cylinder 10th and the transfer cylinder 1 1 are driven by a main drive, not shown. For this purpose, according to the prior art on a shaft 12 of the forme cylinder 10 and on a shaft 13 of the transfer cylinder 1 1 each designed as a fixed gear drive gear 14 and 15 are mounted, which mesh with each other. In the on the shaft 13 of the transfer cylinder 1 1 positioned drive gear 15 meshes with another drive gear 16, which is positioned on a not shown shaft of a printing cylinder, not shown.

In the on the shaft 12 of the forme cylinder 10 positioned drive gear 14 meshes with another drive gear 17 to drive in the sense of a closed Räderzugs a not-shown inking unit and an optional, not-shown dampening unit.

The form cylinder 10 of the printing unit of FIG. 1 is assigned a circumferential register adjustment device 18, which comprises at least one circumferential register adjustment element 19 and one circumferential register adjustment spindle 20 which can be actuated or displaced by the circumferential register adjustment element 19. The circumferential register actuating spindle 20 is mounted on a carrier element 21, namely such that an internal thread 22 of the circumferential register actuating spindle 20 cooperates with an external thread 23 of a section of the carrier element 21, so that the circumferential register actuating spindle 20 moves along the circumferential register actuating spindle 20 as a result of rotation of the circumferential register actuating spindle 20 the external thread 23 having portion of the support member 21 can be translationally or axially displaced. This translational or axial displacement transmits the circumferential register setting spindle 20 to the drive gear 14 of the forme cylinder 10, due to the fact that the drive gear 14 associated with the forme cylinder 10 is coupled to the drive gearwheel 15 mounted on the shaft 13 of the transfer cylinder 11 via a helical gear 24 is, the axial displacement of the drive gear 14 for circumferential register adjustment relative rotation of the forme cylinder 10 relative to the transfer cylinder 1 1 results.

In addition to the circumferential register adjustment device 18, the form cylinder 10 of FIG. 1 is assigned a side register adjustment device 25, which has a side register adjustment drive 26 and a side register adjustment spindle 27. The Seitenregisterverstellspindel 27 has an external thread 28 which cooperates with an internal thread 29 of the support member 21 such that caused by the Seitenregisterverstellantrieb 26 rotation of Seitenregisterverstellspindel 27 for Seitenregisterverstellung in an axial translatori-see displacement of the forme cylinder 10 results.

In the known from the prior art of FIG. 1 printing unit, as already mentioned, all cylinders and rollers are driven in the printing operation of a main drive, not shown. Also for the execution of Rüstar- work can be driven in the printing unit of FIG. 1, the cylinder and rollers thereof only from the main drive. This results in relatively long set-up times.

On this basis, the present invention is based on the problem of a novel device for printing a sheet-shaped printing material with

To create printing ink or lacquer and a method for operating the same, with the help of which can be minimized setup times with little device engineering effort.

This problem is solved by a device according to claim 1. According to the invention designed as a fixed gear drive gear is mounted on the adjustable from the Umfangsregisterstellspindel, designed as a fixed gear drive gear, wherein between these two drive gears a clutch is connected, wherein the clutch is closed in the de-energized state and these two drive gears so positively coupled with each other that the forme cylinder can be driven by the main drive via the drive gear constructed as a loose wheel, and wherein the clutch is opened in the actuated state and these two drive gears decoupled from one another such that the forme cylinder can be driven by an auxiliary drive via the drive gear constructed as a fixed wheel. In the apparatus according to the invention set-up times can be reduced with low device complexity. The solution according to the invention, which allows the coupling of an auxiliary drive to the forme cylinder to carry out set-up work, is structurally simple and space-saving. The coupling, by means of which the forme cylinder can be coupled either to the main drive or to the auxiliary drive, is integrated in the circumferential register adjustment device in such a way that the clutch is positioned on the drive gear, which is axially displaceable by the peripheral register spindle of the circumferential register adjustment device.

Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:

Fig. 1 shows a detail of a trained as a printing unit, from the

Prior art device for printing a sheet-shaped substrate; and

2 shows a detail of a printing device designed as a device according to the invention for printing an arcuate printing

Material.

FIG. 2 shows a detail of an apparatus according to the invention, designed as a printing unit, for printing a sheet-shaped printing material in the region of a forme cylinder 30 and a transfer cylinder 31. Form cylinder 30 and transfer cylinder 31 roll off each other. In addition to the forme cylinder 30 and transfer cylinder 31, the printing unit of Fig. 2 has a rolling on the transfer cylinder 31, not shown pressure cylinder and a not-shown inking unit and optionally a not-shown dampening unit. All cylinders and rollers of the printing unit of FIG. 2 are driven in printing operation by a main drive, not shown. On a shaft 32 of the forme cylinder designed as a fixed gear drive gear 34 is mounted. On a shaft 33 of the transfer cylinder 31, an e- benfalls designed as a fixed gear drive gear 35 is mounted.

The mounted on the shaft 33 of the transfer cylinder 31 drive gear 35 meshes with a drive gear 36, which is mounted on a not shown shafts of a printing cylinder also not shown.

The drive gearwheel 34 mounted on the shaft 32 of the forme cylinder 30 and designed as a fixed gearwheel is axially displaceable by a circumferential register adjustment spindle 37 of a circumferential register adjustment device 38, wherein the circumferential register adjustment spindle 37 of the peripheral register adjustment device 38 can be actuated or adjusted by a circumferential register adjustment drive 39. In order to enable this adjustment of the drive gear 34 via the peripheral register spindle 37, the Umfangsregisterstellspindel 37 is in turn mounted via an internal thread 40 on an external thread 41 having portion of a support member 42 so as to a caused by the Umfangsregisterstellantrieb 39 rotation of the Umfangsregisterstellspindel 37 in a translational displacement of Umfangsgrößenstellstell- spindle 37 and thus translate into a translational displacement of the drive gear 34.

In order to enable a structurally simple coupling of an auxiliary drive 43 to the forme cylinder 30 and a decoupling of the forme cylinder 30 from the main drive, the drive gearwheel 34 designed as a fixed wheel and mounted on the shaft 32 of the forme cylinder 30 does not mesh with the drive gearwheel 35 of the transfer cylinder 31 On the contrary, a further drive toothed wheel 44 designed as a loose wheel is mounted on the drive toothed wheel 34, wherein a clutch 45 is connected between these two drive toothed wheels 34 and 44 of the forme cylinder 30. Then, when the clutch 45 is closed in an unactuated state, the two drive gears 34 and 44 of the forme cylinder 30 are positively coupled together such that the forme cylinder 30, starting from the main drive not shown via a gear connection, in which the gears 35 and 36 are involved, can be driven.

Then, however, when the clutch 45 is opened in an actuated state, the two drive gears 34 and 44 of the forme cylinder 30 are decoupled from each other, so then the forme cylinder 30 is disconnected from the main drive and can be driven by the drive gear 34 from the auxiliary drive 43, including then the auxiliary drive 43 is coupled to the drive gear 34.

Then, when the clutch 45, which is connected between the two drive gears 34 and 44 of the forme cylinder 30, is unactuated and thus closed, the two drive gears 34 and 44 are positively connected to each other, so that the forme cylinder 30 via the drive gear 44 from the non- can be driven from the main drive shown. Then, however, when the clutch 45 is actuated and thus opened, the two drive gears 34 and 44 of the forme cylinder 30 are decoupled from each other, then the Formzy- cylinder 30 can be decoupled from the main drive and coupled via the drive gear 34 to the auxiliary drive 43.

Then, when the auxiliary drive 43 is coupled via the drive gear 34 to the forme cylinder 30, meshes the drive gear 34 of the forme cylinder 30 in a drive gear 46 driven by the auxiliary drive 43 a.

Trained as a loose wheel drive gear 44 of the forme cylinder 30 is mounted radially and axially on the formed as a fixed gear 34 drive gear of the forme cylinder 30. Trained as idler gear drive gear 44 meshes via a helical gear 47 in the mounted on the shaft 33 of the transfer cylinder 31 drive gear 35 a. This is important in order that axial displacement of the drive gears 34 and 44 for circumferential register adjustment can be converted into a relative rotation of the forme cylinder 30 with respect to the transfer cylinder 31 when the axial displacement of the drive gear 34 and thus of the drive gear 44 is initiated by the circumferential register adjustment device 38.

As already mentioned, the coupling 45 is connected between the drive gearwheel 34 of the forme cylinder 30 designed as a fixed gear and the drive gearwheel 44 of the forme cylinder 30 designed as a loose gearwheel. In this case, a first coupling half 48 is assigned to the drive gear formed as a fixed gear 34 and a second coupling half 49 designed as a loose gear drive gear 44. The first coupling half 48 is an integral part of the drive gear formed as a fixed gear 34. The second coupling half 49 is supported via at least one spring element 50 on the idler gear drive gear 44. Then, when the clutch 45 is de-energized, the or each spring member 50 pushes the second clutch half 49 against the first clutch half 48 so as to positively couple the two drive gears 34 and 44 of the forme cylinder 30 to each other. If, however, the clutch 45 of a

Clutch actuation mechanism 51 actuated, the second coupling half 49 is axially displaced against the spring force of the or each spring member 50 and brought out of engagement with the first coupling half 48, so then the two drive gears 34 and 44 of the forme cylinder 30 are disengaged.

The clutch actuating mechanism 51 is preferably a pneumatic clutch actuating mechanism. Alternatively, the clutch actuating mechanism 51 may also be based on an electrical or hydraulic operating principle. In addition to the assemblies already mentioned, the form cylinder 30 is also assigned a side register adjusting device 52, which comprises a side register actuating drive 53 and a side register adjusting spindle 54 that can be actuated by the side register actuating drive 53. The side register adjustment spindle 54 is mounted via an external thread 55 in a section of the support element 42 having an internal thread 56, so as to effect a rotation of the side register adjustment spindle 54 caused by the side register actuator 53 into a translational or axial displacement of the forme register cylinder 30.

In the construction according to the invention designed as a fixed gear drive gear 34, designed as a loose gear drive gear 44 and the clutch 45 are all mounted on the axis of the forme cylinder 30.

LIST OF REFERENCE NUMBERS

10 form cylinder

1 1 transfer cylinder

12 wave

13 wave

14 drive gear

15 drive gear

16 drive gear

17 drive gear

18 Umfangsregisterverstelleinrichtung

19 circumferential register actuator

20 circumferential register adjusting spindle

21 supporting element

22 internal thread

23 external thread

24 helical toothing

25 Seitenregisterverstelleinrichtung

26 Seitenregisterverstellantrieb

27 side register adjustment spindle

28 external thread

29 internal thread

30 form cylinder

31 transfer cylinders

32 wave

33 wave

34 drive gear

35 drive gear

36 drive gear

37 circumferential register adjusting spindle

38 Umfangsregisterverstelleinrichtung

39 circumferential register actuator

40 internal thread 41 external thread

42 supporting element

43 Auxiliary agent

44 drive gear

45 clutch

46 drive gear

47 helical toothing

48 coupling half

49 coupling half

50 spring element

51 clutch actuating mechanism

52 Seitenregisterverstelleinrichtung

53 side register actuator

54 side register adjusting spindle

55 external thread

56 internal thread

Claims

claims

1 . Device for printing a sheet-shaped substrate with

Printing ink or varnish, namely printing unit or varnishing unit of a sheet-fed printing machine, with a printing cylinder carrying the printing material to be printed, with a forme cylinder carrying at least one printing form or varnish form, and with an applicator comprising at least one roller, with the aid of which the or each on the Form cylinder is positioned printing form or paint form ink or paint can be applied, wherein all cylinders and rollers are driven by a main drive over a plurality of drive gears, wherein the forme cylinder is assigned a Umfangsregisterverstelleinrichtung comprising a Umfangsregisterstellantrieb, a Umfangsregisterstellantrieb adjustable Umfangsregisterstellspindel, and a characterized in that it can be adjusted by the circumferential register adjusting spindle, mounted on the forme cylinder and embodied as a fixed gear, characterized by the fact that it can be adjusted on the circumference of the adjusting spindle (37) Fixed gear formed drive gear (34) designed as a loose gear drive gear (44) is mounted, between these two drive gears (34, 44) a clutch (45) is connected, wherein the clutch (45) is closed in the unactuated state and these two drive gears (34, 44) coupled to each other in such a form-fitting manner that the forme cylinder (30) can be driven by the main drive via the drive gear (44) designed as a loose wheel, and wherein the clutch (45) is opened in the actuated state and these two drive gears (34, 44) are decoupled from one another such that the forme cylinder (30) can be driven by an auxiliary drive (43) via the drive gearwheel (34) designed as a fixed gear.

2. Device according to claim 1, characterized in that the auxiliary drive (43) decoupled from the drive gear formed as a fixed wheel (34) with unconfirmed and thus closed clutch (45) and coupled with actuated and thus opened clutch (45) to the same is.

3. Apparatus according to claim 1 or 2, characterized in that the idler gear formed drive gear (44) is mounted radially and axially on the fixed gear formed as a drive gear (34).

4. Device according to one of claims 1 to 3, characterized in that the idler gear formed as a drive gear (44) via a helical toothing (47) in a drive gear (35) combs, in a printing unit a transfer cylinder (31) or in a coating unit assigned to the printing cylinder.

5. Device according to one of claims 1 to 4, characterized in that the drive gear formed as a fixed gear (34) with actuated and thus opened clutch (45) in a by the auxiliary drive (43) driven drive gear (46) meshes and unconfirmed and that closed clutch (45) does not mesh with it.

6. Device according to one of claims 1 to 5, characterized in that a first coupling half (48) of the switchable coupling (45) is associated with the drive gear formed as a fixed gear (34), and that a second coupling half (49) of the switchable coupling (45). 45) associated with the idler gear drive gear (44), wherein at unconfirmed clutch (45) at least one spring element (50) the two coupling halves (48, 49) for closing the clutch (45) presses together, and wherein actuated clutch ( 45) a clutch actuation mechanism (51) presses the two coupling halves (48, 49) against the spring force of the or each spring element (50) to open the clutch (45) apart.

7. The device according to claim 6, characterized in that the first coupling half (48) is an integral part of the fixed gear formed as driving gear (34), and that the second coupling half (49) via the or each spring element (50) on the idler wheel trained drive gear (44) is supported.

8. Device according to one of claims 1 to 7, characterized in that formed as a fixed gear drive gear (34), designed as a loose gear drive gear (44) and the switchable clutch (45) are all mounted on the axis of the forme cylinder (30) ,

9. Device according to one of claims 1 to 8, characterized in that the form cylinder (30) further comprises a Seitenregisterverstelleinrich- device (52) is associated, which comprises a Seitenregisterstellantrieb (53) and an adjustable by the side register actuator side register actuating spindle (54).