EP2409838A1 - Roller bar - Google Patents

Abstract

The roller bar (31) has a pressing element (32) movable in a plane (E1) extending in an axial direction of a plate cylinder of a rotary printing machine. A movably supported protection strip (46) i.e. finger protection strip, extending in the axial direction of the cylinder covers the pressing element. The protection strip is movable in another plane (E2) or the former plane, where the planes are arranged parallel to each other. The protection strip is moved in the latter plane in a radially linear motion directed to the plate cylinder.

Description

The invention relates to a roller bar according to the preamble of claim 1.

By the DE 10 2008 000 078 A1 a device for up and down plates of at least one flexible printing forme on or from a forme cylinder of a rotary printing machine is known, wherein the device comprises at least one parallel to the forme cylinder arranged roller bar on which a plurality of pressure rollers are arranged, wherein the roller bar has a finger guard, wherein the finger guard comprises a sheet, which is spaced at angestellten Anpressrollen by a gap from the forme cylinder, which is small enough to not come with a finger or a hand between pressure rollers and forme cylinder, and which is large enough to a concern of the sheet to prevent the forme cylinder or on a flattened printing forme.

By the EP 2 014 467 A2 the use of a roller bar for supporting a mounting of at least one printing forme on the lateral surface of a forme cylinder of a rotary printing press is known.

By the DE 44 40 239 C2 is a rolling element for pressing a flexible pressure plate to the forme cylinder of a printing unit of a rotary printing machine during plate change known, the rolling element of a plurality along the shell of the forme cylinder, individually engageable on these rollers, wherein at least a first role in the assembly of the pressure plate and at least a second role in the dismantling of the printing plate in the printing plate in the form of cylinder can be adjusted.

The invention has for its object to provide a roller bar to support an assembly of at least one printing plate on the lateral surface of a forme cylinder of a rotary printing press.

The object is achieved by the features of claim 1.

The achievable with the present invention consist in particular in that the roller bar is very compact and therefore good in a printing unit in one or at least close to one of a forme cylinder and cooperating with the forme cylinder transfer cylinder gusset can be arranged, which also by a protective strip, In particular, by a finger guard, for an operator who is in a rotation of the aforementioned printing cylinder, especially during ongoing production of the printing unit, on an operating side of this printing unit, a sufficient protection against the risk of injury is offered. The pressing elements of the roller bar and the associated protective strip are selectively and independently operable, in particular remotely operable by a control unit.

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

Fig. 1

eine erste Ausführungsvariante einer Druckeinheit;

Fig. 2

Eine zweite Ausführungsvariante einer Druckeinheit;

Fig. 3

eine dritte Ausführungsvariante einer Druckeinheit;

Fig. 4

eine vierte Ausführungsvariante einer Druckeinheit;

Fig. 5

eine der in einer der Druckeinheiten gemäß Fig. 1 bis 4 angeordneten Zuführeinrichtungen mitsamt einer mit dieser Zuführeinrichtung zusammenwirkenden Rollenleiste;

Fig. 6

eine weitere Darstellung einer Zuführeinrichtung und einer mit dieser Zuführeinrichtung zusammenwirkenden Rollenleiste;

Fig. 7

eine Anordnung von Stellmitteln in der Rollenleiste gemäß den Fig. 5 oder 6;

Fig. 8

einen vergrößerten Ausschnitt aus der Darstellung in der Fig. 7;

Fig. 9

eine Schnittdarstellung der Rollenleiste;

Fig. 10

ein erster Betriebszustand der in einer Druckeinheit angeordneten Rollenleiste;

Fig. 11

ein zweiter Betriebszustand der in einer Druckeinheit angeordneten Rollenleiste;

Fig. 12

eine weitere Schnittdarstellung der in einer Druckeinheit angeordneten Rollenleiste;

Fig. 13

ein dritter Betriebszustand der in einer Druckeinheit angeordneten Rollenleiste mit einer dem Formzylinder zuzuführenden Druckform;

Fig. 14

eine Druckeinheit mit in ihr angeordneten Zuführeinrichtungen jeweils mit der der jeweiligen Zuführeinrichtung zugeordneten Rollenleiste.

Show it:

Fig. 1

a first embodiment of a printing unit;

Fig. 2

A second embodiment of a printing unit;

Fig. 3

a third embodiment of a printing unit;

Fig. 4

a fourth embodiment of a printing unit;

Fig. 5

one of the in one of the printing units according to Fig. 1 to 4 arranged feeders together with a cooperating with this feed roller bar;

Fig. 6

a further illustration of a feeder and cooperating with this feed roller bar;

Fig. 7

an arrangement of adjusting means in the roller bar according to the Fig. 5 or 6 ;

Fig. 8

an enlarged section of the representation in the Fig. 7 ;

Fig. 9

a sectional view of the roller bar;

Fig. 10

a first operating state of the roller bar arranged in a printing unit;

Fig. 11

a second operating state of the roller bar arranged in a printing unit;

Fig. 12

a further sectional view of the arranged in a printing unit roller bar;

Fig. 13

a third operating state of the roller bar arranged in a printing unit with a printing forme to be supplied to the forme cylinder;

Fig. 14

a printing unit with feed devices arranged in it, in each case with the roller strip assigned to the respective feed device.

A rotary printing machine, z. B. an offset rotary printing machine, has at least one printing unit 01, preferably a plurality of printing units 01 on. In each printing unit 01, at least one printing unit is arranged in each case in a frame 08, the printing unit being arranged from one with at least one printing forme 16 (FIG. Fig. 5 ) occupied or at least assignable forme cylinder 02 and cooperating with this forme cylinder 02 transfer cylinder 03, wherein a substrate 04, z. B. a web or a sheet, at least during a printing process performed by the rotary printing machine by a pressure cylinder formed by the transfer cylinder 03 and an employee of this transfer cylinder 03 impression cylinder is passed. The co-operating with the transfer cylinder 03 impression cylinder can also be formed as a transfer cylinder 03, with which transfer cylinder 03 another forme cylinder 02 cooperates, so that from the two pairs of cylinders, each consisting of a forme cylinder 02 and cooperating with this forme cylinder 02 transfer cylinder 03, a double printing unit is formed. Furthermore, at least one inking unit 06, which in the printing process applies printing ink to the at least one printing forme of the forme cylinder 02 belonging to the relevant printing unit, belongs to each printing unit. If the printing unit 01 is operated in a wet offset method, ie in a printing method using a dampening solution in the printing process, a dampening unit 07 (FIG. Fig. 3 and 4 ), which in the printing process applies the dampening solution to the at least one printing forme of the forme cylinder 02 belonging to the relevant printing unit.

As an auxiliary device for changing at least one printing plate 16 on the belonging to the relevant printing unit form cylinder 02, in particular for assembly and / or optionally also for dismantling this at least one printing plate 16 on or from the respective forme cylinder 02, each printing unit is associated with a feeder 09 , wherein the respective feed device 09 in the frame 08 of the respective printing unit 01 is arranged fixed to the frame or, if necessary, to carry out the change of at least one printing plate 16 at least on the belonging to the relevant printing unit form cylinder 02 z. B. by a pivoting movement, by a lifting movement or by a feed movement is preferably tangentially adjustable. The respective feed device 09 preferably has a plurality, z. B. vertically stacked levels 14; 17; 18 ( Fig. 5 ), so that from at least one level 14; 17 of the relevant feed device 09 at least one printing plate 16 can be fed to the associated forme cylinder 02 and preferably in another plane 18 of the feed device 09 at least one of the associated forme cylinder 02 discharged printing form 16 is receivable. The feeding of the at least one printing forme 16 to the associated forme cylinder 02 and / or the discharge of at least one printing forme 16 from the relevant forme cylinder 02 is preferably carried out automatically by at least one conveying device 21 that can be controlled by a control device; 26 ( Fig. 5 ). The feeder 09 may, for. B. may be formed as a printing forme magazine having a plurality of superposed shafts, each of which the respective levels 14; 17; 18 realize.

Fig. 1 shows an example operated in a dry offset printing unit printing unit 01 with several, in particular four in the same frame 08 substantially vertically stacked double printing units, wherein the formed as a material web substrate 04 z. B. after deflection at a lower first guide roller 11 vertically passed through this printing unit 01 and thus through the printing column of the double printing and z. B. at an upper second guide roller 12 is led out of this printing unit 01. A transport direction T of the printing substrate 04 thus runs at least in the printing process substantially orthogonal to a foundation 13 on which this printing unit 01 is founded. In the in the Fig. 1 shown example, the forme cylinder 02 and each cooperating with them transfer cylinder 03 each have an equal diameter.

Along the circumference of the respective forme cylinder 02 preferably two printing plates 16 are arranged one behind the other. In the axial direction of the forme cylinder 02 can also be arranged in each case a plurality of printing plates 16, z. B. four or six printing plates 16, so that each forme cylinder 02 z. B. occupied with eight or twelve printing plates 16 or at least assignable. The feed cylinders 09 respectively assigned to the relevant forme cylinders 02 are preferably oriented substantially horizontally, for example between opposite walls of the frame 08 of the printing unit 01. B. fixed and tangent to the respective form cylinder 02 employed or at least employable there. One end of the feed devices 09, which lies further in the conveying unit 01 extending transport plane of the printing material 04 is facing an operating side of this printing unit 01. A printing unit 01 with at least one double printing unit has two operating sides which are preferably symmetrical to the transport plane of the printing material 04.

Fig. 2 shows a printing unit 01, which is constructed substantially like the printing unit 01, so that the same reference numerals are used for the same elements of these two printing units 01. In contrast to the printing unit 01 of Fig. 1 have the respective form cylinder 02 of the printing unit 01 of Fig. 2 It is referred to as a printing unit each with a simple large forme cylinder 02 and a double-sized transfer cylinder 03. The respective forme cylinder 02 is along its circumference in each case only with a single printing form sixteenth occupied or at least verifiable, whereas on this forme cylinder 02 in the axial direction quite several, z. B. four or six printing plates 16 can be arranged side by side. The cooperating with one of these forme cylinder 02 transfer cylinder 03 transmits with each of its revolutions each two of the acquired from the forme cylinder 02 printed images on the vertically guided by the printing unit 01 substrate 04th

The in the Fig. 3 exemplified printing unit 01 differs from that in the Fig. 2 illustrated printing unit 01 in that to the printing units in the Fig. 3 illustrated printing unit 01 each have a dampening unit 07, z. B. a three-roll spray dampening unit belongs, as this printing unit 01 performs the printing process in a wet offset printing process.

Fig. 4 shows as an alternative to those in the Fig. 1 to 3 illustrated printing units 01 with a substantially vertical transport direction T of the printing substrate 04 a set up on a foundation 13 printing unit 01 with a double printing unit, wherein in the printing unit 01 of Fig. 4 the printing substrate 04 during the printing process in a horizontal transport direction T and thus is guided substantially parallel to the surface of the foundation 13 through this printing unit 01. In the printing unit 01 of Fig. 4 are the diameter of the forme cylinder 02 and the diameter of each cooperating with the respective forme cylinder 02 transfer cylinder 03 of equal size, the forme cylinder 02 are preferably occupied along its circumference and also in its axial direction in each case only with a single printing plate 16. In association with the respective form cylinders 02 are in the frame 08 of this printing unit 01 also each an inking unit 06 and, if necessary, a dampening unit 07 is arranged. Further, preferably, each forme cylinder 02 of the printing unit 01 is the Fig. 4 each also a feed device 09 associated at least for the assembly of at least one printing plate 16, these feeders 09 are preferably each made in an inclined relative to the horizontal orientation substantially tangentially to the respective form cylinder 02 or at least be adjusted, with a relative to the horizontal angle of inclination z , B. is in the range between 30 ° and 60 °. The operating side of this printing unit 01 is located on that side of the printing unit 01, at which the feed devices 09 arranged in the printing unit 01 can each be charged with at least one printing forme die 16 to be supplied to the respective forme cylinder 02, which is described in US Pat Fig. 4 from the right is possible.

Fig. 5 shows in a simplified schematic representation of a feeder 09, which z. B. in a printing unit 01 according to the Fig. 1 to 3 above rollers of belonging to one of the forme cylinder 02 inking unit 06 is arranged substantially horizontally and tangentially hired to the respective forme cylinder 02. The feed device 09 has at least one plane 14 from which at least one printing plate 16 can be fed to the associated forme cylinder 02. Preferably, at a distance a more levels 14; 17 arranged vertically one above the other, from each of which at least one printing plate 16 can be fed to the associated forme cylinder 02. Preferably at a further distance b vertically below the aforementioned levels 14; 17, from which in each case at least one printing plate 16 can be fed to the associated forme cylinder 02, at least one other further to the respective feeder 09 belonging plane 18 is provided, in which at least one of the associated forme cylinder 02 discharged printing form 16 can be accommodated. In a training variant of the feeder 09 are in each plane 14; 17; 18 in the axial direction of the associated forme cylinder 02 side by side a plurality of printing plates 16 can be arranged, with respect to these levels 14; 17; 18 printing forms 16 either together and simultaneously or individually and selectively to the relevant forme cylinder 02 can be fed or discharged from this. In association with the at least one level 14, from which at least one printing plate 16 can be fed to the associated forme cylinder 02, a controllable first conveyor 21 is provided which z. B. by means of a preferably linearly movable slide 22, which acts on a viewed in the direction of production trailing end 23 of the stored in the relevant plane 14 printing plate 16, stored in the relevant plane 14 printing plate 16 with its seen in the production direction leading end 24 ahead of that form cylinder 02 feeds, this feed device 09 is assigned. Advantageously, it is provided that this first conveyor 21 selectively from one of the multiple levels 14; 17 each at least one printing plate 16 to the associated forme cylinder 02 feeds. If at least one more to the relevant feed device 09 associated level 18 is provided, in which at least one of the associated forme cylinder 02 discharged printing plate 16 is receivable, in association with this plane 18 preferably a controllable second conveyor 26 is provided, which at least one of the associated forme cylinder 02 discharged printing forme 16 of this form cylinder 02 completely dissipates. This second conveyor 26 is z. B. in the form of a preferably linearly movable carriage, which preferably engages the trailing end 23 of the forme cylinder 02 discharged from the printing forme 16 and it completely removes the discharged printing forme 16 of this forme cylinder 02. In the Fig. 5 each indicate one of the conveyors 21; 26 associated double arrows the respective of the respective conveyor 21; 26 executable, parallel to the respective levels 14; 17; 18 extending direction of movement.

Like from the Fig. 5 Moreover, it can be seen, cooperating with the feeder 09 form cylinder 02 at least one extending under the lateral surface, extending in the axial direction of the forme cylinder 02 channel 27, which on the lateral surface of this forme cylinder 02 a preferably slot-shaped opening 28 with a slot width z. B. in the range between 2 mm and 5 mm. When mounting a printing plate 16 on the lateral surface of the forme cylinder 02, the leading end 24 and the trailing end 23 of this printing plate 16 are inserted through the opening 28 in the same channel 27 of this plate cylinder 02 and held there when the printing plate 16 the circumference of this forme 02 practically completely encloses. In the case of a plurality of circumferentially successively arranged on the forme cylinder 02 or to be arranged printing plates 16 whose respective leading end 24 and trailing end 23 are inserted into different channels 27 of the forme cylinder 02 and held there, said channels 27 in the form of cylinder 02 in the circumferential direction to each other are arranged offset, z. B. with an offset of 180 ° when two equally long printing plates 16 are to be arranged on the circumference of the forme cylinder 02 in a row.

To support the assembly of at least one printing forme 16 on the lateral surface of the forme cylinder 02, a roller bar 31 extending in the axial direction of this forme cylinder 02 is provided in association with this forme cylinder 02, wherein the roller bar 31 has at least one pressing element 32, e.g. B. a rolling element, in particular a roller, wherein the at least one pressing element 32 by means of a controllable actuating means 33 to the relevant forme cylinder 02 adjustable and from this also turned off. In the Fig. 5 is the parked from the forme cylinder 02 operating state of the pressing member 32 is shown in a solid line and the employee employed on the forme cylinder 02 operating state of the pressing member 32 indicated by dashed lines. In the FIGS. 2 and 3 an arrangement of the roller bar 31 in a printing unit 01 in association with a respective feeding device 09 is shown.

Furthermore, in order to support the disassembly, ie in particular to support the discharge of at least one printing plate 16 from the lateral surface of the forme cylinder 02 in association with this forme cylinder 02 preferably in the axial direction of this forme cylinder 02 extending guide member 34 is provided, wherein the guide member 34 at least one Pressing element 36, z. B. a rolling element, in particular a roller, wherein the at least one arranged in a guide plane of the outer surface of the forme cylinder 02 Druckform 16 arranged pressure element 36 by means of a controllable actuating means 37 in the direction of the relevant forme cylinder 02 conceivable and also recoverable, wherein However, this pressing element 36 reaches its end position preferably at a distance from the lateral surface of the forme cylinder 02 and thus is not employed on the lateral surface of the forme cylinder 02. In the Fig. 5 an operating state of the pressure element 32 is shown, in which this pressure element 36 is presented by an actuation of its actuating means 37 to be discharged into the guide plane of the outer surface of the forme cylinder 02 pressure plate 16, whereby a detached from the outer surface of the forme cylinder 02 trailing end 23 of at least a pressure mold 16 to be removed from the forme cylinder 02 during a rotation of the forme cylinder 02 counter to its production direction (in FIG Fig. 5 indicated by an arrow) is fed to that level 18 of the relevant feed device 09, in which the at least one of the forme cylinder 02 discharged printing form 16 can be accommodated.

Fig. 6 shows in a perspective view in a printing unit 01 z. B. according to the Fig. 1 to 4 arranged form cylinder 02 with a tangent to this form cylinder 02 employee level 14; 17 of a feed device 09 for supplying at least one printing plate 16 to this forme cylinder 02. In the in the Fig. 6 illustrated example, the level 14; 17 of the feeder 09 formed by a simple support table. In association with this forme cylinder 02 in the printing unit 01 preferably arranged fixed to the frame roller bar 31 is provided, wherein the roller bar 31 and the plane 14; 17 of the feed device 09 extend in the axial direction of the forme cylinder 02 in each case at least over a width B of a printing forme 16 which can be arranged on this forme cylinder 02. The roller bar 31 has at least one pressing element 32, preferably a plurality, for. B. ten or more juxtaposed pressing elements 32, which in the in the Fig. 6 shown operating state due to an actuation of at least one actuating means 33 are employed on the forme cylinder 02, wherein the adjusting means 33 in the Fig. 6 through a housing 44 ( Fig. 9 ), z. B. are covered at least partially by a cladding sheet. The housing 44 of the roller bar 31 is z. B. in the form of a traverse, which extends in the axial direction of the forme cylinder 02 between opposing walls of the frame 08 of the printing unit 01, or it is z. B. arranged on such a Traverse.

Fig. 7 shows the in the Fig. 6 shown roller bar 31, wherein the housing 44 is partially open, so that the pressing elements 32 adjusting adjusting means 33 are visible. In the preferred embodiment, each pressing element 32 exactly one adjusting means 33 assigned, so that the roller bar 31 has as many adjusting means 33 as pressing elements 32nd Die Andrückelemente 32 sind z. B. formed as a roll, wherein an axis 43 of each roller each z. B. in a fixedly connected to the respective actuating means 33 bracket 38 ( Fig. 8 ) is stored. On the respective lateral surface of each roller are preferably more, z. B. five or more rubber rings 39 wound up ( Fig. 8 ), which are arranged at an axial distance from each other. Due to an actuation of the adjusting means 33, the pressing elements 32 are preferably radially against the forme cylinder 02 employed.

Fig. 8 shows in an enlargement part of the in the Fig. 6 and 7 shown roller bar 31. The adjusting means 33 of the pressing members 32 are fixedly arranged in the housing 44 of the roller bar 31. The adjusting means 33 are each z. B. formed as a pneumatic cylinder, in particular as a double-acting pneumatic cylinder, which has two pressure chambers acting on the same piston, one of these pressure chambers for hiring the associated with the respective adjusting means 33 pressing member 32 to the forme cylinder 02 and the other of these two pressure chambers for a parking of the pressing element 32 connected to the respective actuating means 33 are provided by the forme cylinder 02. Each pneumatic cylinder thus has two connections each for a pneumatic line. In order to allow a common hiring of all pressing elements 32 of the roller bar 31 to the forme cylinder 02, all connections that supply a pressure medium of the respective pressure chamber, which is responsible for hiring the pressure element 32 connected to the respective actuating means 32 to the forme cylinder 02, with a same compressed air source preferably connected by means of a common compressed air line. Likewise, all the connections which supply a pressure medium of the respective pressure chamber, which is responsible for stopping the pressing element 32 connected to the respective actuating means 33 from the forme cylinder 02, are connected to a same compressed air source, preferably by means of a common compressed air line, to jointly shut off all the pressure elements 32 the roller bar 31 of the

To enable form cylinder 02. The respective pressing element 32 overlapping bracket 38 is firmly connected by means of a rod 41 with the piston of the respective pneumatic cylinder. The piston of the respective pneumatic cylinder is preferably secured in the pneumatic cylinder by at least one guide element 42 against rotation.

Fig. 9 is a sectional view of the in the Fig. 6 to 8 shown roller bar 31, wherein the section is in a longitudinal direction of the roller bar 31 orthogonal plane. At least one, but preferably each of the at least one pressing element 32 adjusting adjusting means 33 is fixedly arranged in the housing 44, wherein the axis 43 of the respective actuating means 33 in its distance from the forme cylinder 02 variable pressure element 32 in which fixedly connected to the rod 41 Bracket 38 is mounted. On one longitudinal side of the roller bar 31, ie on its side parallel to the axial direction of the associated forme cylinder 02, which has a substantially radially directed to the forme cylinder 02 surface extent, ie on the front of the roller bar 31 or on its back, is preferably on or in the housing 44 of the roller bar 31 an access to the at least one pressing element 32 covering the protective strip 46, in particular a finger strip 46, which is movably supported by means of at least one connected to the housing 44 of the roller bar 31 guide member 47. The executable by the finger guard bar 46 movement is preferably a lifting movement, wherein the stroke of the finger guard bar 46 in particular extends radially to the forme cylinder 02, but is at least limited by two different radial distances from the forme cylinder 02. The finger guard bar 46 is to perform their stroke z. B. driven by two adjusting means 48, wherein each one of the two adjusting means 48 is arranged on one of the two in the axial direction of the forme cylinder 02 opposite end faces preferably in the housing 44 of the roller bar 31 ( Fig. 7 and 8th ). The adjusting means 48 for carrying out the lifting movement of the finger guard strip 46 are accordingly of the at least one adjusting means 33 for employment of at least one

Pressing element 32 to the forme cylinder 02 or for the abutment of this pressure element 32 different from the forme cylinder 02. The adjusting means 48 for executing the lifting movement of the finger guard strip 46 are also independent of the at least one adjusting means 33 for adjusting the at least one pressing element 32 to the forme cylinder 02 or to shutdown of this pressing member 32 from the forme cylinder 02 operable. The adjusting means 48 of the finger guard strip 46, as well as the at least one adjusting means 33 for on or off the at least one pressing element 32 of the roller bar 31 preferably each as a pneumatic cylinder, in particular as a double-acting pneumatic cylinder, is formed, so that also for the actuating means 48 of the finger guard strip 46 are each provided two terminals each for a pneumatic line. A piston rod 49 of the respective pneumatic cylinder is in each case connected to a connecting element 51 ( Fig. 7 and 8th ), on which the finger protection strip 46 is fixed, so that upon movement of the relevant piston rod 49, the finger protection strip 46 their stroke movement between a forme cylinder 02 farther position P1, in particular end position, and a forme cylinder 02 closer position P2, in particular end position executes , An executed by the finger guard bar 46 with its lifting movement s is z. B. in the range between 4 mm and 20 mm, in particular at about 10 mm to 12 mm ( Fig. 12 ). The finger protection strip 46 is at least on its the form cylinder 02 facing edge z. B. formed as a flanged sheet metal part. The finger strip 46 is at least partially z. B. coated with Teflon or other sliding material to slide at its at least one guide member 47 with less friction. In the preferred embodiment, the preferably a plurality of adjusting means 33 are arranged for on or off of preferably several pressing elements 32 and the adjusting means 48 of the finger guard 46 in a same extending in the axial direction of the forme cylinder 02 plane E1, wherein the adjusting means 33 for arrival or Setting off the at least one pressing element 32 and the adjusting means 48 of the finger guard strip 46 individually and independently of each other, that is selectively operable. The pressing elements 32 of the roller bar 31 and the finger guard bar 46 lead her respective respective linear movement in two different plan planes E1 parallel to each other at a distance e; E2 from, these two levels E1; E2 are preferably directed substantially radially to the lateral surface of the forme cylinder 02 and one of these two planes E1; E2 is the plane E1, in which the adjusting means 33 are arranged for on or off of the at least one pressing element 32 and the adjusting means 48 of the finger guard strip 46. The distance e between the two mutually parallel planes E1; E2 is z. B. in the range between 10 mm and 40 mm, preferably between 20 mm and 30 mm. The movement performed by the pressing elements 32 of the roller bar 31 and / or the finger protection strip 46 is then considered to be directed substantially radially to the lateral surface of the forme cylinder 02 when a longitudinal extent of these planes E1; E2, in which the respective movement is carried out, starting from an intersection with a radial jet emanating from the axis of rotation M of the relevant forme cylinder 02 at an acute angle of not more than 30 °, preferably less than 15 °, deviates from this radial beam ( Fig. 11 ).

Fig. 10 shows the roller bar 31 in its arrangement on a forme cylinder 02, wherein this forme cylinder 02 is employed to a transfer cylinder 03. It is indicated that this transfer cylinder 03 is employed at a further transfer cylinder 03, which indicates that the arrangement of printing cylinder cylinders 02; 03 preferably belongs to a double printing. Fig. 10 thus concerns a mounting situation, as z. Tie Fig. 1 or 4 is shown. Even if in the Fig. 10 the printing cylinder 02; 03 have an equal diameter, the arrangement shown, the roller bar 31 for a person skilled in the art also readily to a printing unit 01 according to the Fig. 2 or 3 , in each of which a simple large forme cylinder 02 cooperates with a double-sized transfer cylinder 03, transferable and executable there. In the Fig. 10 is in or at least close to the gusset between the forme cylinder 02 and the transfer cylinder 03 arranged roller bar 31 shown in an operating position in which all their

Pressing elements 32 are employed on the forme cylinder 02. The z. B. integrally formed in the housing 44 of the roller bar 31 trained finger protection strip 46 is spaced from the lateral surface of the forme cylinder 02 in its farther from the forme cylinder 02 end position P1, which also in the Fig. 9 is shown. The finger protection strip 46 extends in the axial direction of the forme cylinder 02 over almost the entire length of the lateral surface of this forme cylinder 02, ie over more than 90% of this length, but at least over the width B of a printing forme formable on this forme 02 02. At the two end faces of Roller bar 31 are preferably arranged on the housing 44 holding elements 52, by means of which the roller bar 31 is fixedly arranged in the frame 08 of the printing unit 01. At the two end faces of the roller bar 31, a stop 53 is preferably provided, wherein these two stops 53 are arranged spaced apart in the axial direction of the forme cylinder 02, that between them a clear width w corresponding to the width B of at least one on this forme cylinder 02 can be arranged Printing form 16 is formed. To supply the belonging to the roller bar 31 actuating means 33; 48 with a pressure medium, z. As compressed air, at least one connected to a pressure medium source or at least connectable, preferably arranged on the frame 08 of the printing unit 01 connecting element 54 is provided, from which at least one z. B. flexible pressure medium line at least to one end face of the roller bar 31 is feasible. The the adjusting means 33; 48 supplied compressed air has a working pressure z. B. in the range between 2 bar and 6 bar. The connected to the respective connection element 54 and z. B. by means of branches to the respective adjusting means 33; 48 leading compressed air lines are advantageously in the housing 44 of the roller bar 31 in a above the actuating means 33; 48 arranged, in the axial direction of the forme cylinder 02 preferably continuously extending shaft moves. All the pressing elements 32 associated adjusting means 33 and / or all the finger guard 46 associated adjusting means 48 are preferably supplied by the respective pressure medium line respectively together with the pressure medium and are also synchronously pressurized or relieved.

Fig. 11 shows the same installation situation of the roller bar 31 as the Fig. 10 , but with the difference that the z. B. integrally formed in the housing 44 of the roller bar 31 trained finger protection strip 46 is now spaced from the lateral surface of the forme cylinder 02 in its form cylinder 02 closer end position P2. The movable finger protection strip 46, which is preferably fitted in a form-fitting manner between the two stops 53 arranged on each of the two end faces of the roller bar 31, closes access to the gusset formed by the forme cylinder 02 and the transfer cylinder 03 in this operating state in conjunction with the housing 44 of the roller bar 31. to avoid the risk of injury to an operator when this operator during a rotation of the printing cylinder 02; 03, in particular in an ongoing production of the printing press, on the operating side of the printing unit 01 stops.

Fig. 12 shows in a direction to the axial direction of the printing cylinder 02; 03 orthogonal sectional view of a section of the in the Fig. 10 and 11 illustrated arrangement of printing cylinders 02; 03, wherein the roller bar 31 seen from the respective operating side of the printing unit 01 from the access to the formed by the forme cylinder 02 and the transfer cylinder 03 gusset is arranged obstructing. In the in the Fig. 12 shown operating state, the at least one mounted in the bracket 38 pressing member 32 of the roller bar 31 of the pressing member 32 associated adjusting means 33 is employed against the forme cylinder 02. The rod 41 connected to the piston of the actuating means 33 designed as a pneumatic cylinder is extended in the direction of the lateral surface of the forme cylinder 02 by pressurization of the piston with compressed air. In the sectional view of Fig. 12 is also the actuation of the finger strip 46 provided adjusting means 48 can be seen and the connecting element 51, on which the finger protection strip 46 is fixed. The finger guard 46 is slidably mounted on a guide member 47. In the in the Fig. 12 shown operating state, the finger protection strip 46 is located on its forme cylinder 02 farther end position P1. This results in between one the form cylinder 02 facing, preferably rounded and thus not sharp-edged edge of the finger guard strip 46 and the lateral surface of the forme cylinder 02 a gap-shaped opening 56 with a gap width p, wherein the gap width p z. B. in the range between 4 mm and 20 mm, in particular about 10 mm to 12 mm. The roller bar 31 has in its preferred embodiment another, z. B. with the housing 44 of the roller bar 31 fixedly connected, rigid, ie non-movable protective strip 57, with which a gap-shaped opening 58 between the transfer cylinder 03 facing edge of this protective strip 57 and the lateral surface of the transfer cylinder 03 is limited in its gap q, wherein this gap width q also z. B. in the range between 4 mm and 20 mm, in particular about 10 mm to 12 mm.

Fig. 13 shows in a perspective view in the 10 to 12 illustrated arrangement of printing cylinders 02; 03, wherein the forme cylinder 02 with the at least one on its lateral surface preferably slit-shaped opening 28 assumes an angular position in which the seen in the production direction leading end 24 of the forme cylinder 02 to be fed pressure mold 16 is the respective arranged in this forme cylinder 02 channel 27 can be fed. The supply of the printing plate 16 is preferably carried out with one of the in the Fig. 1 to 5 In order to supply the printing forme 16 to the forme cylinder 02, the printing forme 16 to be arranged on the forme cylinder 02 is guided between the two stops 53 arranged in each case on the two end faces of the roller strip 31. The pressing elements 32 of the roller bar 31 are located at this time in their parked from the forme cylinder 02 operating state. The finger protection strip 46 is located at this time in their form cylinder 02 farther end position P1.

Fig. 14 shows a printing unit 01, which in its construction substantially in the Fig. 4 represented printing unit 01 corresponds. Unlike the one in the Fig. 4 shown Printing unit 01 runs the transport direction T of the printing substrate 04 in the reverse direction. The feeders 09 are in the in the Fig. 14 illustrated printing unit 01 from the left in each case with at least one to be arranged on the respective forme cylinder 02 printing form 16 fed, so that the operating side of this printing unit 01 is on the left side of their representation. The Fig. 14 is the arrangement of the basis of the Fig. 5 to 13 explained roller bar 31 in the printing unit 01 removable. Each of the in the Fig. 14 Roller strips 31 shown are each arranged in a feed plane, along which feed plane a to be arranged on the respective forme cylinder 02 printing plate 16 from the associated feeder 09 is substantially tangential to the lateral surface of the respective forme cylinder 02 introduced. The planes E1; E2, in which the pressing elements 32 of the roller bar 31 and the finger guard strip 46 perform their respective directed to the lateral surface of the forme cylinder 02 motion, are preferably substantially orthogonal on the of the arranged on the respective forme cylinder 02 printing form 16 passing feed plane.

With regard to the above-described roller bar 31 for supporting a mounting of at least one printing plate 16 on the lateral surface of a forme cylinder 02 of a rotary printing press, wherein the roller bar 31 has at least one pressing element 32 movable in this plane E1 in a first plane E1 extending in the axial direction of the forme cylinder 02, wherein the roller bar 31 has a in the axial direction of the forme cylinder 02 extending, access to the at least one pressing element 32 covering the protective strip 46, wherein the protective strip 46 is movably mounted, it is proposed that the movement of the protective strip 46 is preferably designed as a linear lifting movement and / or in that the protective strip 46 is preferably movable in a different second plane E2 from the first plane E1 in which the at least one pressing element 32 is movable, the first plane E1 and the second plane E2 being parallel to one another at a distance e are ordered. Here, in the axial direction of the Form cylinder 02 extending first plane E1 be provided a plurality of pressing elements 32, wherein each of these pressing elements 32 each at least one controllable adjusting means 33 is associated. The protective strip 46 is also assigned at least one controllable adjusting means 48 for carrying out its lifting movement. In this case, the at least one of the at least one pressing element 32 associated controllable actuating means 33 and / or the at least one of the protective strip 46 associated controllable actuating means 48 each selectively and independently of a control unit, eg. B. from one of the printing unit associated control station, actuated, in particular remotely operable. Advantageously, the at least one controllable adjusting means 33 associated with the at least one pressing element 32 and / or the controllable adjusting means 48 associated with the protective strip 46 are each designed as a double-acting pneumatic cylinder, each of these pneumatic cylinders having two pressure chambers acting on a same piston, wherein the two working surfaces of this piston to its reliable deflection alternately with a pressure z. B. in the range between 2 bar and 6 bar are acted upon and also acted upon. All of the at least one pressing element 32 associated controllable adjusting means 33 and / or all of the protective strip 46 associated controllable adjusting means 48 are preferably each actuated together. The protective strip 46 is advantageously in or on a housing 44 of the roller bar 31, at least one of the adjusting means 33; 48 covering cladding sheet, slidably mounted on at least one guide member 47, wherein the protective strip 46 is preferably at least partially coated with Teflon or other a friction between the protective strip 46 and its guide member 47 mitigating layer.

LIST OF REFERENCE NUMBERS

01

printing unit

02

Form cylinder; Printing cylinders

03

Transfer cylinder; Printing cylinders

04

substrate

05

-

06

inking

07

dampening

08

frame

09

feeding

10

-

11

deflecting

12

deflecting

13

foundation

14

level

15

-

16

printing form

17

level

18

level

19

-

20

-

21

Conveyor

22

pusher

23

Trailing end of a printing form

24

leading end of a printing form

25

-

26

Conveyor

27

channel

28

opening

29

-

30

-

31

roller strip

32

pressing element

33

actuating means

34

guide element

35

-

36

pressing element

37

actuating means

38

hanger

39

rubber ring

40

-

41

pole

42

guide element

43

axis

44

casing

45

-

46

Flap; Finger guard

47

guide element

48

actuating means

49

piston rod

50

-

51

connecting element

52

retaining element

53

attack

54

connecting element

55

-

56

opening

57

flap

58

opening

B

width

E1

level

E2

level

M

axis of rotation

P1

position

P2

position

T

transport direction

a

distance

b

distance

e

distance

p

gap width

q

gap width

s

Travel Range

w

clear width

Claims (15)

Roller bar (31) for supporting an assembly of at least one printing plate (16) on the lateral surface of a forme cylinder (02) of a rotary printing machine, wherein in association with the roller bar (31) in the axial direction of the forme cylinder (02) extending protective strip (46) is provided , characterized in that the protective strip (46) is movably mounted, wherein the protective strip (46) in a radially to the forme cylinder (02) directed movement is movable. Roller bar (31) according to claim 1, characterized in that the protective strip (46) in a linear movement radially to the forme cylinder (02) is movable. Roller bar (31) according to claim 1, characterized in that the roller bar (31) in a in the axial direction of the forme cylinder (02) extending first plane (E1) at least one in this plane (E1) movable pressing element (32). Roller bar (31) according to claim 3, characterized in that the protective strip (46) is arranged such that it covers an access to the at least one pressing element (32) of the roller bar (31). Roller bar (31) according to claim 3, characterized in that the protective strip (46) in one of the first plane (E1), in which the at least one pressing element (32) is arranged movable, different second plane (E2) is arranged. Roller bar (31) according to claim 5, characterized in that the protective strip (46) in the second plane (E2) is arranged to be movable. Roller bar (31) according to claim 5, characterized in that the first plane (E1) and the second plane (E2) at a distance (e) are arranged parallel to each other. Roller bar (31) according to claim 3, characterized in that in the axial direction of the forme cylinder (02) extending first plane (E1) a plurality of pressing elements (32) are provided. Roller bar (31) according to claim 3 or 8, characterized in that the or each pressure element (32) is associated with at least one controllable actuating means (33). Roller bar (31) according to claim 1, characterized in that the protective strip (46) is associated with at least one controllable adjusting means (48) for carrying out its movement. Roller bar (31) according to claim 9 and 10, characterized in that the at least one of the at least one pressing element (32) associated controllable actuating means (33) and the at least one of the protective strip (46) associated controllable actuating means (48) are each selectively operable. Roller bar (31) according to claim 9 and / or 10, characterized in that all the at least one pressing element (32) associated controllable adjusting means (33) and / or all of the protective strip (46) associated controllable adjusting means (48) are each actuated together. Roller bar (31) according to claim 9 and / or 10, characterized in that the at least one of the at least one pressing element (32) associated with controllable actuating means (33) and / or the at least one of the protective strip (46) associated controllable actuating means (48) are each formed as a double-acting pneumatic cylinder, said pneumatic cylinders each have two acting on a same piston pressure chambers. Roller bar (31) according to claim 1, characterized in that the protective strip (46) in or on a housing (44) of the roller bar (31) on at least one guide element (47) is slidably mounted. Roller bar (31) according to claim 1, characterized in that the protective strip (46) is at least partially coated with Teflon.

Images