EP3439885B1 - Method for controlling the width of a pressure strip between two rotating bodies of a printing unit - Google Patents

Description

The invention relates to a method for controlling at least one press strip with respect to its respective strip width according to claim 1.

By the DE 44 27 967 B4 a method for presetting the pressing between ink-guiding cylinders of a printing machine is known in which at least one first cylinder is dyed, in which at the stoppage of the printing press on a second cylinder, a contact strip is generated by the first cylinder to the stationary second cylinder on and is turned off again, in which the contact strip is measured, and in which the pressure is adjusted between the cylinders based on the measurements on the contact strip, wherein after stopping the cylinder from each other an impression of the contact strip is produced on a substrate, and the width of the contact strip is measured on the substrate by optoelectronic scanning.

By the DE 102 11 870 A1 is a printing machine with a measuring device for measuring a strip, in particular a color strip of a roll to be adjusted known, the measuring device by means of an electro-optical device measures the strip, the measuring device is provided in particular with a CCD line or a laser line.

By the DE 10 2007 008 392 A1 a method for preparing and controlling print jobs in a printing press with a printing unit is known, wherein the printing unit with an inking unit, which has a ink fountain, Farbdosiereinrichtungen, a Farbduktor- and a lift roller, inking, rubbing and inking rollers, a dampening unit, which has a dampening roller, a metering roller and dampening rollers, a plate cylinder, which carries a printing plate, a rubber / blanket cylinder and is provided with registering means, wherein by means of an optical detection unit quality measurements of printed sheets and / or by means of one or more further detection units dimensions and / or force effects of the printing quality determining machine elements are measured, wherein the data of the measurements of one or more evaluation and control devices are supplied and wherein by means of the evaluation and control settings of operating conditions or sequences of motion of inking and / or dampening rollers and / or a Plate cylinder and / or a rubber / blanket cylinder is variable depending on the detection of quality measurements on a sheet and / or measurements of dimensions or force effects on machine elements.

By the DE 10 2007 022 079 A1 a method for automated adjustment of a rotational body pressure in a printing press is known, wherein a press strip image measurement is carried out on a printing material, wherein an image of a first press strip, which is formed by a first rotary body together with a second rotary body, and an image of a second press strip, which is formed by the second rotary body together with a third rotary body, are measured in a preferred embodiment by an electronic control device in response to measuring signals of a measuring device for measuring the widths of the images of the two pressing strips, a first servo motor and a second servo motor, to adjust the pressure strips.

By the DE 10 2008 006 192 A1 a method for operating a printing press is known, namely for checking and optionally setting a contact zone between a forme cylinder of a printing unit and at least one on the Form cylinder in the printing operation rolling-Aufwalwalze, namely at least one inking roller and / or dampening roller, with at least the following, preferably automated running steps: a) initially a printing unit is provided with a ready-to-print inking, but an ink-dampening solution balance of the printing unit is disturbed such the or each printing form positioned on the forme cylinder assumes or leads printing ink throughout; b) then at least one applicator roller whose contact zone is to be checked to the forme cylinder, made to the forme cylinder for a predetermined period of time and turned off again; c) subsequently, a printing material in the printing unit is thereby printed with at least one contact strip, that the printing material formed by a between a rolling on the forme cylinder transfer cylinder and a rolling on the transfer cylinder impression cylinder pressure gap or by a between the forme cylinder and a rolling on the forme cylinder impression cylinder Pressure nip is moved through; d) Subsequently, the or each contact strip printed on the printing material is measured, whereby measured values determined in this case deliver actual values over the or each contact zone to be measured.

The invention has for its object to provide a method for controlling at least one press strip with respect to its respective strip width.

The object is achieved by the features of claim 1. The dependent claims relate to advantageous embodiments and / or developments of the solution found.

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

Fig. 1

Bogenverarbeitungsmaschine;

Fig. 2

Bogenanleger und Bogenanlage;

Fig. 3

Unterbaumodul eines Druckwerkes;

Fig. 4

Oberbaumodul eines Druckwerkes;

Fig. 5

Lackwerk;

Fig. 6

Wendeeinrichtung;

Fig. 7

Bogenauslage;

Fig. 8

Druckplattenerkennungssystem.

Show it:

Fig. 1

Sheet processing machine;

Fig. 2

Sheet feeder and sheet system;

Fig. 3

Sub-module of a printing unit;

Fig. 4

Upper module of a printing unit;

Fig. 5

Coating unit;

Fig. 6

Turning device;

Fig. 7

Sheet delivery;

Fig. 8

Printing plate recognition system.

An arcuate substrate B processing machine, for. B. a sheet processing machine includes a designated example as a sheet feeder 01 01 substrate feeder, for example, referred to as sheet 03 equipment 03 and a designated example as a sheet delivery 08 substrate delivery device 08. Between the Substratzufufinrichtung 01 and the substrate delivery device 08 are preferably arranged several, also known as plants processing stages , in particular as a printing group 05; 06, but also as a coating unit 07, drying plant, calendering or film transfer plant or are designed in another suitable manner. In the case of the formation of the sheet processing machine as a printing machine, in particular sheet-fed printing machine, preferably several of the works are each by a printing unit 05; 06, in particular offset printing unit 05; 06 formed, preferably one or more coating units 07 are arranged downstream. In the case of multiple printing units 05; 06 can also be the arrangement of a or more coating units 07 between the printing units 05; 06 be provided.

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

The individual components of a sheet processing machine on a sheet-fed printing machine are described in more detail below (see, for example, US Pat. Fig. 1 to 8 ).

Such as In FIG. 2 a substrate feeder 01 designed as a sheet feeder 01 is shown with a conveying section 02 formed, for example, as a belt table 02 and with a printing material container 09 formed by, for example, a sheet stack 09, which is arranged on a receiving device 10, e.g. B. a stacking plate 10 is placed. The stacking plate 10 is connected to transport means 11, which ensure that the top of the sheet stack 09 is held in a defined position.

The preferably designed as a sheet feeder 01 substrate feeder 01 preferably comprises Bogenvereinzelungsorgane 12 and sheet transport members 13. The Bogenvereinzelungsorgane 12, for example, as a vacuum cleaner 12 and the sheet transport members 13, for example, as a transport suction 13 and are preferably together by a separator 14 includes, for. B. recorded in a so-called sheet separator 14. The drive of the sheet separator 14 is designed so that the suction pads 12 a predominantly vertical movement and the Transport suction 13 perform a predominantly horizontal movement in or against the sheet transport direction 15. In this case, individual drives are provided in each case for the separating suckers 12 and the transport suckers 13. Under individual drives here controllable drives are understood, which are assigned to one or a group of work organs (Bogenvereinzelungsorgane 12 and / or sheet transport members 13) for their drive, in particular for the drive regardless of the drive (preferably all) other work organs or groups of work organs, in particular without be coupled via a mechanical and / or positive drive connection to drives of other, individually or likewise driven in one or more groups working organs.

Sheet B of the sheet stack 09 are positioned on stop elements 16, in particular with the sheet leading edge against stop surfaces of front stops 16. A bow flap 17 may form an approximately vertical continuation of the abutment surfaces of the front stops 16 in the upper region of the sheet pile 09. The bow flap 17 is, for example via a flap shaft 18, with which it is rotatably connected, in drive connection with a drive, preferably a single drive. The sheet flap 17 can thus be pivoted out of the rectilinear continuation of the stop surfaces forming position and are thus spent in a guide the sheet B to the downstream belt table 02 supporting position. At the back of the sheet stack 09 are preferably blowing devices, for. B. so-called winders for pre-loosening of lying in the upper region of the sheet stack 09 sheet B and for forming a sheet B during conveyance in the sheet transport direction 15 supporting air cushion positioned. For this purpose, further blowing devices or fans and / or baffles may also be provided laterally of the sheet stack 09.

In order to avoid the so-called "change" of the sheet stack 09, ie the reloading of the substrate feeding device 01 with new substrate sheet B, in particular a new printing material 09 to stop the sheet-fed press, is the Sheet feeder 01 equipped with a nonstop device not shown here. In particular, this non-stop device has an auxiliary stack carrier which can be inserted into the stacking area of the printing press and is arranged on a slide-in unit, which is designed in particular as a rake, roller blind or plate. The auxiliary pile carrier takes over the rest stack resting on a transport support 76, in particular a pallet 76, and preferably lifts it continuously in order to ensure trouble-free singling and removal of the respectively uppermost sheet B of the rest of the stack. During this time, the new stack arranged on a further pallet 76 is retracted and subsequently the remaining stack is combined with the new stack.

The bow stack 09 downstream belt table 02 is formed in the embodiment as Saugbändertisch 02. It preferably comprises two rollers 20; 21, for example, a drive roller 20 and a guide roller 21, between which a z. B. one or more parts conveying surface 22; 23 may be provided, which is formed for example by a single or multi-piece table top 22 or by a table sheet 22 forming suction box 23. The drive roller 20 and the guide roller 21 are looped around by at least one conveyor belt 24, which is formed as a suction belt 24 at the suction belt table 02. The tape is z. B. tensioned by means of a tension roller 77 and preferably driven by an example acting on the drive roller 20 band single drive within a power stroke following a speed profile. With the drive roller 20 here correspond clocking rollers 25 which are controlled within a power stroke against the drive roller 20.

The investment device 03, which is designated, for example, as a sheet-fed system 03, preferably comprises a feed-in table 26 to which a control device is assigned. The feed table 26 may be designed as an Anlegblech 26. At the feed table 26 and thus in the path of the sheet B are in the power stroke z. B. designated as so-called front-end marks 27 27, in particular front stops 27 out. At this Front mark 27, the sheet B are created and aligned with its leading edge. The anvil 27 is followed by an arc accelerating means 04, which is designed in particular as a vibrating gripper 04, which feeds the sheet B, which is oriented towards the front edge and possibly to one side edge, to a transfer drum 29 designed as an application drum 29, which feeds the sheet B coming from the conveying path 02 a printing cylinder 34 of the subsequent printing unit 05 passes.

In another embodiment, in particular the position of the sheet B is detected on the feed table 26 by measurement. The sheet B is then transferred in its movement to the vibrating gripper 04. Preferably, during the movement of the vibrating gripper 04, the sheet B is then moved to its correct position and transferred in an aligned manner to the feed drum 29.

In the FIGS. 3 to 5 is the construction of a designed as a sub-module 31 substructure 31 of the works, here printing units 05; 06 to recognize. From the printing units 05; 06 are only the impression cylinder 34; 36 and a print image transmitting transfer cylinder 33 drawn with the also designated as the impression cylinder 34 pressure cylinders 34; 36 also designated as pressure points 55 or pressure nip 55 pressure zones 55 form. The transfer cylinders 33 are also referred to as rubber cylinder 33 or blanket cylinder 33. The impression cylinder 34; 36 have a cylindrical surface except for at least one axially extending cylinder channel 56 through cylindrical surface. In the cylinder channel 56, a gripper system 57 is preferably arranged to take over and transfer the sheet B in the gripper closure. Double-sized impression cylinders 33 therefore have two gripper systems 57 arranged in each case in a cylinder channel 56. Between the pressure cylinders 34; 36 is usually designed as a transfer drum 35 transfer drum 35 with concentric to the axis of rotation arranged and curved sheet support members 58, z. B. so-called drum caps 58 are arranged. Alternatively, the transfer drum 35 without Drum caps 58 may be formed as a so-called Transferter 35. For the transfer of the sheet B from the upstream printing cylinder 34 and for transfer to the downstream printing cylinder 36, the transfer drums 35 preferably gripper systems 59 on. During the sheet transport on the drum caps 58 of the transfer drum 35, the sheets B can be supported in particular by a arranged under the transfer drum 35 air cushion guide 60 and placed so smoothly on the drum caps 58. The transfer drums 35, transfer drums 35 or transferters 35 arranged between the printing cylinders 34 can be made single-size or multiple-size, but are preferably also double-sized. Single-size cylinders can accommodate one sheet B and two-size cylinders can accommodate two sheets B circumferentially.

Each printing unit 05; 06 includes z. B. in the field of a so-called printing unit superstructure 30 a particular as a printing forme cylinder 32, z. B. as a plate cylinder 32 executed printing cylinder 32 and in one embodiment for the offset printing process, in particular a transfer cylinder 33, z. B. as a blanket cylinder 33 running printing cylinder 32. Furthermore, the printing unit 05 includes; 06 z. B. in the area of a so-called printing unit substructure 31 designed as a printing cylinder 34 or impression cylinder 34 printing cylinder 34 and also referred to as a transfer drum 35 transfer drum 35th

The printing units 05; 06 are such. B. also on the schematically illustrated construction of the printing units 05; 06 in the Fig. 1 recognizable, preferably constructed modular, such that the printing unit superstructure 30 by a first module 30, z. B. a so-called overhead module 30 and the printing unit base 31 by a second module 31, z. B. a so-called sub-module 31 is given. In the modular design, the upper module 30 here includes, for example, the printing form cylinder 32 and in one embodiment for the offset printing method and the transfer cylinder 33. The sub-module 31 has in particular the impression cylinder 34 and z. B. the Transfer drum 35 on. As "modular" or module may be understood in this context, a structural unit, which is already introduced 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 the upper module 30 and the lower module 31 is preferably between the blanket cylinder 33 and the impression cylinder 34. The vertical dividing line between the substructure modules 31 and between the printing units 05; 06 seen in the sheet transport direction 15 is mainly placed between the transfer drum 35 of the printing unit 05 and the printing cylinder 36 of the subsequent printing unit 06.

The above, z. B. designed as a blanket cylinder 33 transfer cylinder 33 may have at least one fastening device with a fastening means 38 for holding and / or clamping a blanket. For example, a designated as clamping and / or clamping channel 37 channel 37, in which the clamping and / or clamping members 38 are arranged, in particular for mounting a blanket, may be provided.

The blanket cylinder 33 is with respect. The direction of the effective color flow of z. B. formed as a plate cylinder 32 formed forme cylinder 32, the z. B. also has at least one fastening device with a fastening means 40 for holding and / or clamping at least one printing plate. The plate cylinder 32 may have a designated as clamping and / or clamping channel 39 channel 39, in which z. B. at least one clamping and / or clamping device 40 for clamping a pressure plate on the lateral surface of the plate cylinder 32 is located. On the lateral surface of the plate cylinder 32, a plurality of printing plates or printing plates can be arranged one behind the other in the circumferential direction.

The printing unit 05; 06 may be assigned to an automatic or semi-automatic plate changing device 41 in the area of the printing unit superstructure 30 or upper module 30.

For coloring the concerned z. B. formed as a printing plate printing plate is provided at least one inking unit 42. The inking unit 42 may be formed as a short inking unit 42, as a squeegee unit 42, as a film inking unit 42 or in any other suitable manner. In the case of the embodiment preferred here as a squeegee inking unit 42, the inking unit 42 comprises at least one ink reservoir 43, which may be formed, for example, as a squeegee or ink fountain 43, at least one ink receiving roller 44 to be inked by the ink reservoir 43, for example as a ductor or ink fountain roller 44, one or more further inking rollers 45 and preferably one between the ink fountain roller 44 formed as a color pickup roller 44 and a first inking roller 46 oscillating lifting roller 47, z. B. a so-called color lifter 47. The inking rollers 45 differ in example positively driven Farbreibwalzen 48 (in Fig. 4 hatched) and in inking rollers 49, the z. B. are driven only by friction of the Farbreibwalzen 48. For applying the prepared by the inking rollers 45 color to the printing plate at least one, usually a plurality, preferably four inking rollers 50 are provided in the embodiment.

In the operating direction of rotation 53 of the plate cylinder 32, the inking rollers 50 are optionally preceded by at least one dampening applicator roller 52. This is associated with a dampening unit 51, which is intended for applying wet liquid to the surface of the printing plate. Between a first in the direction of rotation 53 of the plate cylinder 32 inking roller 50 and the nearest dampening roller 52, a preferably switchable bridge roller 54 may be provided. This is functionally a connection between the dampening unit 51 and inking unit 42 possible. In the case of the switchable design, this allows several operating modes to optimize the supply of wet liquid.

The sheet-fed press may include a turning device 78 for turning the sheets B to be printed. The turning device 78 is preferably between the printing units 05; 06 of the machine, in particular between the printing cylinders 34. This turning device 78 is preferably configured so that it can be converted from the Perfecting in the perfecting, so that the machine operates either in the operating mode Perfecting or in the operating mode perfecting. Under the counterpressure is to be understood that a sheet B after printing by a number of printing units 05; 06 is turned to the next printing units 05; 06 to print its back.

The turn is usually carried out according to the principle of trailing edge turning (see eg. Fig. 6 ). The turning device 78 can be designed, for example, as a three-drum turn or as a single-drum turn. In the three-drum turn, three sheet guiding cylinders 79; 80; 81 arranged. In the sheet transport direction 15, for example, a single-sized or double-sized transfer drum 79, a preferably double-sized storage drum 80 and a preferably single-sized turning drum 81 are arranged. A single-sized cylinder can absorb a sheet B maximum format circumferentially. A single-sized cylinder has so referred to the diameter of the z. B. as a plate cylinder 32 formed forme cylinder 32 the same, a double-sized cylinder to a double-large diameter.

The turning drum 81 is in particular equipped with a turning gripper system 82 and the storage drum 80 is then equipped with at least one sheet holding system 83 per arch-carrying surface. The sheet holding systems 83 are preferably formed as a gripper system 83 for the sheet leading edge. Preferably, too Fixing elements for the rear portion of a sheet B are provided, which are preferably designed as vacuum systems 84. The teat systems 84 are preferably connected to adjustable rear shell segments and circumferentially relative to the gripper systems 83 adjustable on front shell segments, so that sheet B of maximum to minimum size in the operating mode Perfecting and / or in the mode perfecting in the front and rear Area can be held on the storage drum 80. Below storage drum 80 and / or turning drum 81 sheet guiding elements for guiding the sheet B can be arranged. Further, the turning device 78 is associated with a Leitrakel for guiding the sheet B between the storage drum 80 and beater 81.

The last printing unit 06 is z. B. downstream of a coating unit 07. As shown for example in the drawings, as a pressure cylinder 61 or impression cylinder 34 trained cylinder in the base 31, z. B. arranged within a sub-module 31. The impression cylinder 61 is preferably the impression cylinders 34; 36 of the printing units 05; 06 identical.

The area of a z. B. formed as a top module 62 Lackwerkoberbaus 62 of the coating unit 07 differs from the Druckwerksoberbauten 30 and Oberbaumodulen 30 of the printing units 05; 06. Within this Lackwerkoberbaus 62 is a z. B. as a paint cylinder 63 trained coating cylinder 63 is arranged, on which a fastening system 64, z. B. a clamping and / or clamping system 64 a z. B. attached as a varnish cloth or paint plate trained transmission means, for. B. is clamped. For applying the paint to the trained example in the form of a blanket cloth or on the paint plate is preferably designed here as chamber doctor blade system 65 application system 65, comprising preferably a cup structure on the outer surface comprehensive inking roller 66, in particular anilox roller 66, and a chamber doctor blade 67 is applied , The chamber doctor blade 67 here contains two doctor blades cooperating with the anilox roller 66.

Downstream of the last printing unit 05; 06 or, if provided, after the coating unit 07, a drying section is preferably provided. To form the drying section are in Bedruckstoffweg between the last as printing or coating unit 05; 06; 07 trained factory 05; 06; 07 and a z. B. by a delivery stack 71 formed product package 71 one or more drying devices 68. Preferably, one or more drying devices 68 are arranged above and / or below the sheet path in the sheet delivery 08. In a preferred embodiment, the path between the last paint or printing unit 05; 06; 07 and the sheet delivery 08 in particular through the interposition of a drying plant extendable, so as to gain space for the arrangement of further drying devices 68. If necessary, an intermediate drying in the machine by the cylinders associated drying devices 68 can take place. This intermediate drying can also be carried out by a drying plant arranged in the machine.

The sheet delivery 08 a sheet-processing machine, in particular a sheet-fed press, especially a Bogenoffsetrotationsdruckmaschine includes a sheet guiding system, here as a sheet guiding cylinder, especially impression cylinder 34, downstream sheet conveying system, which is designed in particular as a chain conveyor system 69. The sheet conveying system contains traction means moved by means of drive and deflection means, which drive gripping devices for sheet delivery. The gripping means have fixing organs for taking over and fixing the sheet B. In particular, clamping and / or suction grippers can be used to grip the sheet edges as fixing organs. In further developments, not shown, additional gripping devices are provided for the sheet trailing edges.

Trained as a chain conveyor system 69 sheet conveying system includes over chain wheels 72 laid and driven by these, guided in laterally arranged guide rails, not shown, chains 73 on which gripper carriage 70 for Transport of the bow B are arranged. Of the gripper carriages 70, the sheets B are conveyed in the sheet transport direction 15 to the delivery stack 71 mounted on, for example, a pallet 76 or a different kind of transport support. The gripper carriages 70 preferably include leading edge clamp grippers having gripper fingers cooperating with gripper pads which are spaced apart from one another on a gripper shaft and are controllable therefrom.

For a secure transport of the held by the gripper carriage 70 sheet B a sheet guiding device and, for example, a dryer is provided in the sheet delivery 08. The sheet guiding device has the gripper carriage 70 facing sheet guide plates, which are provided with Blasluftdüsen and extend over the machine width. Below the sheet baffle blow boxes are arranged, via which the Blasluftdüsen be supplied with blowing air, so that between the sheet guide plate and transported by the gripper carriage 70 bow B a supporting air cushion is formed. In order to control heating of the sheet guide plate in the dryer, a coolant circuit can be integrated. In order to prevent the sheets B from sticking together on the delivery stack 71, in the area of the sheet delivery 08 preferably a release agent application device (not shown), in particular a powder device, is preferably provided, combined with a device for sucking off the powder.

In front of the delivery stack 71, a braking device (not further described) for decelerating the sheet B released by the gripper carriage 70 is arranged. The braking device may contain rotating suction rings and / or circulating suction belts or be designed as Nachgreifersystem. The delayed by the braking device bow B attach themselves to front stops and are stored aligned on the delivery stack 71. The delivery stack 71 is preferably lowered by a Stapelhubantrieb to the respective stored sheet thickness, so that the stacking surface assumes an always approximately constant level.

To change the z. B. designed as pallets 76 transport documents 76 to avoid stopping the sheet-fed press, the sheet delivery 08 may be equipped with a non-stop device, not shown. This mainly comprises an auxiliary pile carrier, for example in the form of a roll-up table, in particular also called a roller blind. The roller blind has movably connected rods. In its rest position, it is arranged rolled up in front of the delivery stack 71 and is unrolled for stack change with the sheetfed press running in the sheet transport direction 15 between two sheets B in a parallel to the surface of the delivery stack 71 working position. In this position, above the delivery stack 71, this batten table temporarily picks up the incoming bows B, so that an auxiliary stack is formed. The main stack can now be removed and replaced by a new transport pad 76, in particular a pallet 76. At the end of the stack change process, the blind is retracted to its rest position and the auxiliary stack thereby deposited on the new pallet 76.

The sheet-fed press is associated with at least one drive motor, not shown. In a first embodiment, this is at least one drive motor z. B. is designed as a main engine and drives z. B. a closed gear train, which forms a drive network. The drive assembly comprises in particular the impression cylinder 34; 36, the transfer drums 35, the blanket cylinders 33, the plate cylinders 32 and the inking units 42.

Individual functional units of the sheet-fed printing machine, such as the substrate feeding device 01, especially the sheet feeder 01, the ink pickup roller 44 and / or optionally provided dampening units 51, preferably by separate drives, in particular individual drives, ie without mechanical and / or positive drive connection to drives the other functional units and the main motor comprehensive drive network are driven or be. In an embodiment further developing the first embodiment, at least the Plate cylinder 32 outsourced from the drive assembly and by only the respective plate cylinder 32 associated separate drives, in particular individual drives, ie without mechanical and / or positive drive connection to the drives of the other plate cylinder 32 and to the main motor comprehensive drive network and to drives other functional units such as the Substratzufufhreinrichtung 01, the ink fountain rollers 44 and / or the dampening unit 51, rotatably moved. The individual drives of the plate cylinder 32 may be formed in particular by so-called direct drives, wherein the direct drive is an above-mentioned single drive is understood in which the drive motor or its rotor, preferably without intervening transmission elements, directly or optionally via a clutch coaxial with each other in the arrangement Drive shaft, in particular the pin of the plate cylinder 32 is connected. The drive motor is preferably designed so that it can be dispensed with the interposition of a transmission. At this time, the peripheral speed of the plate cylinders 32 is adjusted to the peripheral speed of the cylinders cooperating with the plate cylinders 32. According to another embodiment, several of the plants, preferably each of the plants on their own, the drive network of the plant concerned driving drive motor, but without being coupled via a mechanical and / or positive drive connection to drives of other plants.

The bow B are in the z. B. provided as a sheet stack 09 trained printing 09. By the sheet separator 14, the uppermost sheet B of the sheet stack 09 is detected and supplied for further processing. This happens z. As follows:
The Bogenvereinzelungsorgane 12 are guided against the top of the sheet stack 09, detect the top sheet B and lift it from the underlying sheet B, by being moved back to their original position. The wind blowers undercut the bow B held by the bow separating members 12 and thus separate it completely from the bow B lying underneath Bogenvereinzelungsorganen 12 held and full-surface separate sheet B is detected by the sheet transport members 13 and released by the Bogenvereinzelungsorganen 12. The sheet transport members 13 promote the detected sheet B in the sheet transport direction 15, wherein at the beginning of the sheet transport, the sheet flap 17 can be pivoted down so that the sheet B with the sheet leading edge to z. B. trained as a belt table 02 conveyor line 02 can be transported. The clock rollers 25 are initially lifted from the drive roller 20 and put on the respective sheet B, if this is in the gap between the clock rollers 25 and the drive roller 20. Subsequently, the respective sheet B is released by the sheet transport members 13. The funded by the sheet transport members 13 in the sheet transport direction 15 sheets B are in compliance with a predetermined scale distance on the z. B. positioned as a belt table 02 conveyor section 02 and guided by this or this in the power stroke of the sheet-fed press against the leading brands 27 and can be deducted below by, for example, designed as vibrating gripper 04 arc acceleration means 04.

The gripper z. B. the swing gripper 04 pass the sheet B to the gripper of the feed drum 29, through which the sheet B is transferred to the gripper system 57 of the printing cylinder 34 of the first printing unit 05.

The now located on the printing cylinder 34 sheet B is colored by the inking unit 42 on the printing form cylinder 32 and in execution as an offset printing unit on the transfer cylinder 33. This happens z. As follows:
The z. B. in color ink 43 formed as ink fountain 43 stockpiled ink is metered in zones on the ink pickup roller 44, z. B. the ink fountain roller 44 and preferably from the periodically moved back and forth ink lifter 47 as a color strip on the z. B. trained as Farbreibwalze 48 first inking roller 46th stored. This transfers the ink to the inking rollers 48 via inking rollers 49 driven by friction. The ink is transferred to the inking rollers 50 via further inking rollers 45 and thereby reaches the at least one printing form mounted on the printing form cylinder 32, viewed in the direction of rotation of the printing forme cylinder 32 Order the color through the inking rollers 50 of the order of wet liquid can be done by the dampening roller 52.

The deposited on the relevant printing form color is motive transferred to the blanket cylinder 33 and transferred from this to the guided by the printing cylinder 34 sheet B.

The sheet B is now from the first printing unit 05 on the following printing unit 06 and optionally subsequent other printing units 05; 06 transferred. This happens z. As follows:
The sheet B is transferred from the gripper system 57 of the printing cylinder 34 to the gripper system 59 of the transfer drum 35 and so on through the entire sheet-fed press. In the individual printing units 05; 06 is then applied via the respective transfer cylinder 33, the color on the sheet B.

On the way of the sheet B through the sheet-fed press, if a turning device 78 is present, the sheet B also turned and printed on its back. The operation of the sheet holding system described in the embodiment in the perfecting mode is z. For example:
The lying on the storage drum 80, printed in straight printing sheet B is guided by the sheet holding system 83 in the area of the sheet leading edge and in addition from a designed as a suction pad of Saugersystems 84 sheet holding system 84 in the area the sheet trailing edge fixed. After the sheet leading edge has passed the tangent point between the storage drum 80 and the subsequent turning drum 81, it is released by the sheet holding system 83. While the sheet trailing edge passes the tangent point between storage drum 80 and turning drum 81, it is taken over by the turning gripper system 82 of the turning drum 81 and released from the sheet holding system 84 of the storage drum 80, so that the sheet trailing edge then becomes the sheet leading edge.

After the sheet B, the printing units 05; 06 has happened, it can be provided in one or more coating units 07 by the paint cylinder 63 with a paint layer. The gripper system of the printing cylinder 61 then passes the sheet B to z. B. the chain conveyor system 69 of the sheet delivery 08th

The gripped at the front edge sheet B are of the gripper carriage 70 after the acquisition of the printing cylinder 61 and passing through a deflection z. B. on a track that faces up. The sheets B are dried by the intended drying devices 68 and z. B. occupied with powder. The sheets B are transported by the gripper carriage 70 up to the height of the delivery stack 71 and stored there on this.

An in-line inspection system of the sheet processing machine is used to provide a quality e.g. B. multicolored printed and / or painted sheet B in the machine (ie "inline") to control and a machine operator to display the results of this control ( Fig. 1 ). For this purpose, the inline inspection system creates at least one photographic image of the respective print image to be inspected. The in-line inspection system is capable of preferably performing a 100% inspection of the entire print run up to a print speed of up to 20,000 sheets per hour, depending on the machine. Each sheet B is on several, z. B. mapped to over 12 million pixels. This results depending on the format of the used Arc B has a spatial resolution in the range of about 0.25 sqmm / per pixel to about 0.5 sqmm / per pixel. The inline inspection system detects with a theoretical color gamut of z. B. about 16.7 million gradations smallest color deviations and / or brightness differences in the printed image. The in-line inspection system detects both short-term printing errors (eg ink splashes, water marks, paper defects, slugs, etc.) as well as permanent print deviations (eg over- / undercolouring of individual colors, lack of color, toning, etc.) and indicates detected defects preferably by means of a display device 91, z. B. in a monitor image arc B for bow B on. The in-line inspection system makes it possible, for example, to set tolerance limits for the print quality of the sheets B to be inspected. If a tolerance limit is exceeded or undershot, the inline inspection system gives a warning z. B. on the display 91 from. In a preferred embodiment, the in-line inspection system identifies fault locations in the form of z. B. large grid points in the printed image displayed on the monitor, the grid points z. B. appear in colors that do not occur in the print image. A arranged in the rotary printing machine inline inspection system thus forms a printed sheet B to several million pixels of the relevant optoelectronic device and detects to control the quality of a arranged on the respective sheet B print image color deviations of and / or brightness differences to a respective predetermined setpoint, wherein a result of this control is displayed to a machine operator.

For inline inspection system include at least one in the sheet processing machine z. B. on a printing unit 05; 06 or on a coating unit 07 or on a sheet delivery 08 arranged camera 86 each having an associated illumination device 87 and an evaluation device 88, in particular a computing device 88. The camera 86 is preferably formed as a semiconductor camera, z. B. as a CCD camera or CMOS camera, z. B. in the form of a line camera or a surface camera. A z. B. by an optical lens A defined detection range 89 of the respective camera 86 is in each case directed radially, preferably radially, onto one of the impression cylinders 34. The illumination device 87 is preferably arranged in the substructure 31 of the respective module. The illumination device 87 is preferably designed as an LED illumination. The illumination device 87 preferably radiates white light in the direction of the printed image to be inspected.

In particular in connection with a plate changing device 41 ( Fig. 4 ), a printing plate recognition system is provided which is a fully automatic inline reading system for a printing plate to be arranged on a plate cylinder 32. The printing plate recognition system determines, by means of a camera 92 directed at the plate cylinder 32, whether there is a printing plate in the clamping and / or clamping device 40. The printing plate recognition system also controls whether the printing plate is sufficiently deep in the clamping and / or clamping device 40 ( Fig. 4 ). After successful inspection, the relevant printing plate is automatically clamped. The printing plate recognition system works with z. B. three registration marks 93, of which z. B. two were exposed in the prepress on the printing plate and a z. B. on a pressure plate registering register pin 94 is arranged ( Fig. 8 ). Thus, by detecting registration marks 93, the printing plate recognition system checks whether a printing form arranged on the printing form cylinder 32 is correctly held by a clamping and / or clamping device 40 arranged on this printing plate cylinder 32, at least one registration mark 93 on the printing form and another registration mark 93 are arranged in particular stationary on the printing form cylinder 32.

If the printing plate additionally a plate encoding 96 z. B. in the form of a preferably two-dimensional code, in particular a DataMatrix codes, the printing plate recognition system evaluates this disk encoding 96 and thereby controls whether the printing plate corresponding to the print job in the right printing 05; 06 is located. Subsequently, the printing plate recognition system or an evaluation device 88 connected to it activates printing unit-specific default settings. The DataMatrix code is thus an information carrier for order-specific data. The disk encoding 96 is z. For example, it can be used to automatically load the entire job including the preset data into the machine's setup memory (color profiles, duct speeds, area coverage, header data). This z. B. a comparison of the plate set with respect to the affiliation of all printing plates to order, part order, the front and back and the ink in the printing unit 05; 06. The printing plate recognition system gives z. B. an error message when the job is not found in the plate recognition system or a DataMatrix code z. B. is unreadable due to damage or missing.

In the respective pressure zone 55 ( Fig. 3 ), but also between the respective plate cylinder 32 and to this plate cylinder 32 employed inking rollers 50 and / or at least one employed dampening roller 52 and between at least one of the inking rollers 50 and a Farbreibwalze 48 or between the first in the direction of rotation of the printing plate cylinder 32 inking roller 50 and between These first inking roller 50 and the nearest dampening roller 52 arranged bridge roller 54 are formed by the respective juxtaposition of two of these rotary bodies each extending in each case in the longitudinal direction of the rotary body extending contact strip or pressing strips. In order to ensure the highest possible print quality, and indeed over the entire duration of the respective printing process, the respective strip width extending in the circumferential direction of the respective rotational body of at least one, usually several of these contact strips or pressing strips is preferably at least approximately simultaneously to control and a correction requirement readjust. For the sake of simplicity, only the term compression strip will be used hereinafter. Formed between an inking roller 50 and a Farbreibwalze 48 pressing strips are in the printed image of the relevant on the lateral surface of Printing form cylinder 32 unwound inking roller 50 controllable.

A method for controlling a strip width of a press strip assumes that the press strip of two mutually employed in a printing unit 05; 06 a rotary printing machine arranged rotating bodies is formed. In this case, one of the two mutually employed rotary body leads on its lateral surface z. B. fully an ink, wherein the color-leading rotational body forms a color strip in the region of the pressing strip on the lateral surface of the employee against it rotational body. Usually, or be on a as a plate cylinder 32 of the printing unit 05; 06 formed rotational body and / or on a as a transfer cylinder 33 of the printing unit 05; 06 formed rotational body each formed a color strip. Advantageously, it is provided that an image of the color strip is produced with an optoelectronic device arranged in the rotary printing machine, wherein a color strip formed on the plate cylinder 32 is advantageously photographed by an optoelectronic device embodied as a camera 92 of a printing plate recognition system. Alternatively, or in addition to the detection of the color strip in question by the camera 92 of a printing plate recognition system, a color strip formed on a substrate B by the transfer cylinder 33 can be photographically imaged by an optoelectronic device formed as a camera 86 of an in-line inspection system. The photographic image of the respective color strip is recorded in the relevant camera 86; 92 preferably each formed in the form of digital image data. In this respect, the functional scope of an optoelectronic device designed as a camera 86 of an inline inspection system and / or also of an optoelectronic device designed as a camera 92 of a printing plate recognition system is extended to at least one of these two optoelectronic devices in addition to their original intended use each still adds the function that it allows each to control the strip width of at least one pressing strip. This multiple use of at least one of the arranged in a rotary printing machine optoelectronic devices is extremely economical and therefore advantageous. This multiple use of at least one existing optoelectronic device, which is made possible by an extension of the respective functional scope, makes it unnecessary to provide additional installation space in the rotary printing press for an otherwise further device to be installed.

The preferably digital image data of the respective photographic image of the respective color stripe are respectively from the respective camera 86; 92 is transmitted to the evaluation device 88 or computing device 88, wherein the arithmetic unit 88 from these image data of the photographic image of the respective color strip each determines information about the stripe width of the respective formed between the two mutually employed rotational bodies press strip, preferably calculated a value for the strip width in question , As an alternative to the calculated value for the strip width concerned, the arithmetic means 88 may also indicate the information about the strip width of the respective press strip determined by it as a rank in a multi-ranked rating system, e.g. B. in each case with a rank corresponding areas such as "good", "sufficient" and "faulty" or in the form of different colors, eg. B. by an assignment of the colors green, yellow and red to the respective determined information about the stripe width on the basis of previously defined criteria, each color represents one rank. Advantageously, the computing device 88 outputs the determined information about the stripe width of the respective pressing strip on a data-technically connected to the computing device 88 or at least connectable display device 91, z. B. the rank in question or as a numerical value, whereby the determined or calculated information on the stripe width is visualized. As a display device 91, a monitor of a rotary press belonging to the control station is preferably used. The computing device 88 checks z. B., whether the determined information on the strip width of the respective pressing strip, taking into account at least one previously set limit corresponds to a given for the respective pressure strip target value or is within a predetermined target value range. The display device 91 preferably indicates whether the determined information about the strip width of the respective press strip lies below or above the at least one previously set limit value.

The control of the strip width of the respective press strip takes place in that at least one by the inking unit 42 with ink particularly uniformly and completely colored inking roller 50 to a colorless, preferably stationary printing cylinder 32 employed and after a contact time of a few seconds, z. B. after a contact time of up to 15 seconds, in particular 10 seconds of this printing forme cylinder 32 is turned off again. Thereafter, the at least one of the printing form cylinder 32 carried color strip when parked inking roller 50 and parked inking rollers 50 from the printing form cylinder 32 z. B. imaged via a previously cleaned by ink transfer cylinder 33 on a substrate B and detected by at least one of the aforementioned optoelectronic devices and i. d. R. subsequently evaluated in the evaluation device 88 or computing device 88.

This results in a method for controlling at least one press strip with respect to its respective strip width, wherein the respective press strip in each case by two in a printing unit 05; At least one first rotation body is guided on its outer surface of an ink, wherein the respective color-leading first rotation body during standstill of the respective second rotation body in Range of each Press strip on the lateral surface of this second rotation body in each case forms a color strip, wherein each first rotation body of the lateral surface of the respective second rotation body turned off and the second rotation body is set in rotation, wherein with an arranged in the rotary printing machine optoelectronic device an image of the respective color strip is created wherein the image of the respective color stripe is created by a) photographing the respective color stripe formed on the lateral surface of the second body of revolution by an optoelectronic device designed as a camera 92 of a printing plate detection system on the surface of this second body of revolution; or b each formed on the lateral surface of the second body of revolution by means of a third rotational body set against this second body of revolution on a Printed substrate B is photographically imaged each of a trained on this substrate B as a camera 86 of an inline inspection system optoelectronic device.

As a respective first rotation body is z. B. each used a colored inking roller 50. In addition to at least one each formed as an inking roller 50 first rotary body z. B. at least one each used as a dampening roller 52 first rotary body each used for employment on the same second rotary body. Frequently, a plurality of first rotary bodies are employed on the same second rotary body. As the respectively second rotary body, a printing forme cylinder 32 carrying at least one printing plate is preferably used in each case. On the printing form cylinder 32, a colorless printing forme before the employment of the at least one first rotating body is used, in particular a new unused printing forme. This printing plate is advantageously prior to controlling the at least one press strip with respect to its respective strip width by means of a fully automatic or at least semi-automatic plate changing device 41 the printing form cylinder 32nd fed. As the third rotational body employed against the second rotational body, in particular a transfer cylinder 33 of the printing couple 05; 06 used. Before a repetition of the control of the respective strip width of pressing strips, the relevant printing form is in each case printed or washed cleanly on the respective printing form cylinder 32 or a corresponding printing blanket on the respective transfer cylinder 33. On the outer surface of the respective first rotation body applied ink is before the employment of the respective first rotation body against the second rotation body of a Farbreibwalze 48 z. B. triturated.

In many applications, it is such that pressing strips in different printing units 05; 06 of the rotary printing machine to be controlled. In the case of a control of the respective strip width of press strips from a plurality of printing units 05; 06, the respective second rotational bodies are respectively positioned in their respective rotational angle position such that the respective first rotational bodies are in each case set at different distances to the respective second rotational body with respect to a printing start intended with respect to the printing substrate B and / or an intended printing end. The method described is in particular following a printing plate change in the relevant printing units 05; 06 executed.

If in several printing units 05; 06 is to control the respective strip width of pressing strips, the respective printing forme cylinder 32 and plate cylinder 32 are positioned in their respective rotational position so that the resulting from these pressure strips on the substrate B color stripes do not overlap. This takes place in that the respective inking rollers 50 are employed at different intervals relative to the respective printing forme cylinder 32 or plate cylinder 32 with respect to the print start intended with regard to the printing substrate B and / or an intended printing end.

To control the strip width of the respective press strip z. B. a defined Number of multiple sheets B, z. B. transported at least three sheets B through the printing press, of which for the evaluation either all or only a specific selection, ie subset, namely the sheet B are used with the best quality representation of the respective color strip or is. The evaluation of the formed on the sheet B color stripe is preferably carried out in that the individual color strips certain in the press existing press strip z. B. assigned using a virtual template and / or visualized on the display device 91, preferably on the monitor belonging to the printing press control room.

In order to repeat the control of the strip width of pressing strips, as already mentioned, the printing plate cylinder or plate cylinders 32 or plate cylinders 32 and, if appropriate, transfer cylinders 33 concerned must each be printed and / or washed cleanly beforehand. Alternatively, the printing forme on the respective plate cylinder 32 and / or the blanket to be renewed on the respective transfer cylinder 33.

A method for controlling a plurality of pressing strips with respect to their respective strip width assumes that each of the pressing strips is formed in each case by two mutually engaged rotational bodies, wherein the rotational bodies in question in each case in a printing unit 05; 06 a rotary printing machine are employed against each other, wherein in at least two printing units 05; 06 of the rotary printing machine, preferably in all printing units 05; 06 of the rotary printing machine in each case two rotary bodies are employed against each other. In each of these printing units 05; 06 are one of the rotating bodies employed against each other as a printing form cylinder 32 carrying at least one printing plate and the other rotating body as an inking roller 46; 50 of an inking unit 42 is formed. In the at least two printing units 05; 06, the respective printing form cylinder 32 are each rotated in such a rotational angular position that at least their respective first inking roller 46 each differ from each other Distance to an intended print start at least one of these printing units 05; 06 are together to be printed sheet B. The at least each first inking roller 46; 50 of the respective inking unit 42 is in each case employed at standstill of the rotary printing press to the respective printing form cylinder 32 such that in the at least two printing units 05; 06 on the respective at least one previously colorless arranged on the respective printing form cylinder 32 printing forme by hiring the at least each first inking unit roller 46; 50 of the respective inking unit 42 each a color strip is formed. After a defined exposure time of a few seconds, z. B. after a contact time of up to 15 seconds, in particular 10 seconds, the at least one employee to the respective printing forme on the respective printing forme cylinder 32 inking roller 46; 50 parked by the relevant printing form on the respective printing form cylinder 32 again. Now, the rotary printing press is placed in its operating state of the production printing, wherein a defined number of sheets to be printed B, z. B. three sheets B, the printing plates with the color strips having printing units 05; 06 are supplied. The formed on the respective otherwise colorless printing forms color strips are in the parked operating state of the respective at least one inking unit roller 46; 50 on the these printing units 05; 06 transferred sheet B transferred. The operating state of the continuous printing of the rotary printing machine is terminated as soon as these are each printed with the color strip printed sheet B in a sheet delivery 08 of the rotary printing press. Finally, the respective color strips printed on each of the sheets B become the respective printing units 05; Assigned to 06, wherein the execution of the control of the pressing strips, the respective strip width of these color strips is determined. In this way, the plurality of pressing strips can be controlled at least approximately simultaneously with respect to their respective strip width in the same production printing of the rotary printing press. This method is especially following a z. B. using a plate changing device 41 preferably automated executed printing plate change in the relevant printing units 05; 06 executed.

In conjunction with the at least one inking unit roller 46; 50 is in the relevant printing units 05; 06 if necessary, in each case also a dampening roller 52 of a dampening unit 51 employed to the respective printing forme and parked from there again after the formation of the respective color strip on the relevant printing form. If in the relevant printing units 05; 06 of the at least one printing plate-carrying printing cylinder 32 each cooperating with a color-free transfer cylinder 33, the respective formed on the respective printing plate color strips in each case first of the respective printing plate on the relevant color-free transfer cylinder 33 and from this transfer cylinder 33 to the concerned Printing unit 05; 06 transferred sheet B transferred. Before repeating control of the strip width of pressing strips, the respective plate cylinders 32 and, if present, the transfer cylinders 33 are each neatly printed and / or washed in order to restore them to a colorless state.

As described above, the respective color stripes printed on the sheets B become the respective printing units 05; 06 z. B. assigned using a schematic drawing or a template. Likewise, an image of the color strip can be created with an optoelectronic device arranged in the rotary printing machine, wherein the photographic image of the respective color strip is preferably formed in the form of digital image data. In a very advantageous embodiment, the respective strip width of the plurality of pressing strips is automatically determined by detecting and evaluating the color strips using a computing device 88. The respective strip width of the plurality of pressing strips determined by the calculating device 88 can then be visualized on a display device 91, preferably a monitor of a control station belonging to the rotary printing press being used as display device 91. The evaluation is preferably carried out as described above. In addition, it is advantageous if the computing device 88 from the determined values for the respective stripe width Justiervorschläge generated for adjusting the pressure of the rotational body involved in the respective pressing strip and z. B. on the display 91 indicates.

LIST OF REFERENCE NUMBERS

01

Substrate feeding device, sheet feeder

02

Conveyor belt, belt table, suction belt table

03

Investment facility, bow facility

04

Arc accelerator, swinging grapple

05

Processing level, printing unit, first

06

Processing level, printing unit

07

Processing level, coating unit

08

Substrate delivery device, sheet delivery

09

Printing container, sheet pile

10

Recording device, stacking plate

11

Mode of Transport

12

Bogenvereinzungs organ, separating suction

13

Bow transport organs, transport suckers

14

Separating device, sheet separator

15

Sheet transport direction

16

Stop elements, front stops

17

bow flap

18

flap shaft

19

-

20

Roller, drive roller

21

Roller, guide roller

22

Conveying surface, table top

23

Conveying surface, suction box

24

Conveyor belt, suction belt

25

synchronizing roller

26

Feed table, Anlegblech

27

Stop, front stop, front lays

28

-

29

Transfer drum, feed drum

30

Print engine superstructure, module, first, upper module

31

Printing unit base, module, second, sub-module, substructure

32

Printing cylinder, printing forme cylinder, plate cylinder

33

Printing cylinder, transfer cylinder, rubber cylinder

34

Printing cylinder, impression cylinder, impression cylinder

35

Transfer drum, transfer drum, transferter

36

Printing cylinder, impression cylinder, impression cylinder

37

Channel, clamping and / or clamping channel

38

Fasteners, clamping and / or clamping devices

39

Channel, clamping and / or clamping channel

40

Fastening means, clamping and / or clamping device

41

Plate changing device

42

Inking unit, lifting inking unit, short inking unit, film inking unit

43

Color stock, color box

44

Paint pickup roller, ink fountain roller

45

Inking rollers

46

first inking roller

47

Lifting roller, color lifter

48

Color rubbing rollers, forcibly driven

49

Inking rollers, driven by friction

50

Inking rollers

51

dampening

52

Dampener roller

53

Direction of rotation of the plate cylinder

54

bridge roller

55

Pressure zone, pressure point, pressure gap

56

cylinder gap

57

Gripper system of the printing cylinder 34th

58

Arch support elements, drum caps

59

Gripper system of the transfer drum 35

60

Air cushion guide

61

Printing cylinder, impression cylinder, impression cylinder

62

Lackwerkoberbau, Oberbaumodul the coating plant

63

Coating cylinder, paint cylinder

64

Mounting system, clamping and / or clamping system

65

Application system, chambered doctor blade system

66

Inking roller, anilox roller

67

Doctor, chambered doctor

68

drying device

69

Chain Conveyor System

70

Gripping device, gripper carriage

71

Delivery pile, product package

72

Sprocket

73

Chain

74

-

75

guideway

76

Transport underlay, pallet

77

idler

78

turning device

79

Sheet guiding cylinder, transfer drum

80

Sheet guiding cylinder, storage drum

81

Sheet guiding cylinder, turning drum

82

Turning gripper system

83

Sheet holding system, gripper system

84

Sheet holding system, vacuum system

85

-

86

camera

87

lighting device

88

Evaluation device, computing device

89

detection range

90

-

91

display

92

camera

93

pass mark

94

dowel

95

-

96

plate coding

B

Substrate, substrate, sheet

Claims (15)

1. A method for checking at least one press strip in terms of the respective strip width thereof, wherein the relevant press strip is formed by two rotational bodies arranged against each another in a printing unit (05; 06), wherein at least one first rotational body is positioned against a second rotational body, wherein at least the at least one first rotational body bears an ink on its lateral surface, wherein the respective color-bearing first rotational body during the idle state of the relevant second rotational body forms a color strip in the region of the respective press strip on the lateral surface of this second rotational body, wherein each first rotational body is moved away from the lateral surface of the relevant second rotational body and the second rotational body is set in rotation, wherein in each case a printing form cylinder bearing at least one print form is used as the respective second rotational body, wherein an image of the respective color strip is created with an optoelectronic device arranged in the rotary printing press, wherein the image of the respective color strip is created in that

   a) the respective color strip formed on the lateral surface of the second rotational body is in each case photographically recorded by an optoelectronic device directed towards the lateral surface of this second rotational body or that

   b) the respective color strip formed on the lateral surface of the second rotational body and transferred to a substrate (B) by means of a third rotational body positioned on said second rotational body is in each case photographically recorded by an optoelectronic device directed towards said substrate (B), wherein a transfer cylinder (33) of the printing unit (05; 06) is used as the third rotational body placed against the second rotational body,

   characterized in that a) the optoelectronic device is designed as a camera (92) of a printing plate detection system arranged in the rotary printing press or that (b) the optoelectronic device is designed as a camera (86) of an in-line inspection system arranged in the rotary printing press, wherein in each case a multiple use of the respective optoelectronic device arranged in the rotary printing press occurs.
2. The method according to claim 1, characterized in that the photographic recording of the respective color strip is in each case developed in the form of digital image data, wherein the digital image data of the respective photographic recording of the respective color strip by the relevant camera (86; 92) in each case is transmitted to a computing device (88), wherein the computing device (88) determines from the digital image data of the photographic recording of the respective color strip in each case an information item about the strip width of the respective press strip formed between the rotational bodies positioned against each other, wherein the computing device (88) visualizes the information it has determined about the strip width of the respective press strip formed between the rotational bodies positioned against each other on a display device (91) connected in data terms or at least connectable in data terms to this computing device (88).
3. The method according to claim 2, characterized in that the computing device (88) specifies the information it has determined about the strip width of the respective press strip as a rank in an evaluation system having several ranks or as a numerical value, wherein the determined strip width of the relevant rank or numerical value of the respective press strip is in each case displayed on the display device (91) connected in data terms or at least connectable in data terms to the computing device (88) in each case for checking the strip width of the relevant press strip.
4. The method according to claim 3, characterized in that the computing device (88) checks whether the determined information about the strip width of the respective press strip in consideration of at least one previously fixed limit corresponds to a given set point for the relevant press strip or lies within a predefined set point range, wherein the display device (91) displays whether the determined information about the strip width of the respective press strip lies above or below the at least one previously fixed limit.
5. The method according to claim 1 or 2 or 3 or 4, characterized in that the respective color strip is formed by a short-term placement of the respective first rotational body against the stationary second rotational body, wherein the duration of the placement is a maximum of 15 seconds.
6. The method according to claim 1 or 2 or 3 or 4 or 5, characterized in that in each case an inked ink roller (50) is used as a respective first rotational body.
7. The method according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that an ink-free print form is used on the printing form cylinder (32) prior to the placement of the at least one first rotational body or that a new, unused print form is used on the printing form cylinder (32).
8. The method according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7, characterized in that, prior to the checking of the at least one press strip in terms of the respective width thereof, the print form is fed to the printing form cylinder (32) by means of a fully automatic or at least semi-automatic operating plate replacing device (41).
9. The method according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8, characterized in that press strips are checked in different printing units (05; 06) of the rotary printing press, wherein in the case of checking the respective width of press strips from several printing units (05; 06) the respective second rotational body is positioned in its respective rotational angle position such that the respective first rotational bodies are placed at different distances on the respective second rotational bodies with respect to an intended start of printing and/or an intended end of printing in terms of the substrate (B).
10. The method according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9, characterized in that several first rotational bodies are placed on the same second rotational body.
11. The method according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10, characterized in that in each case at least two rotational bodies are arranged against each another in at least two printing units (05; 06) of the rotary printing unit, wherein in each of the printing units (05; 06) a printing form cylinder (32) bearing at least one ink-free print form is used as one of the rotational bodies placed against one another and in each case an ink roller (46; 50) of an inking unit (42) is used as the at least one other rotational body, wherein in the at least two printing units (05; 06) the respective printing form cylinder (32) is rotated in each case in such a rotational angle position that at least one of the respective substrates (B) to be printed jointly by these printing units (05; 06) in each case is in rotational direction of the respective printing form cylinder (32) in each case first ink roller (46) in each case at differing distances to one and/or that at least one of the respective substrates (B) to be printed jointly by these printing units (05; 06) in each case is in rotational direction of the respective printing form cylinder (32) in each case last ink roller (46) in each case at differing distances to one another to an intended end of printing.
12. The method according to claim 11, characterized in that at least the respective first ink roller (46; 50) of the respective inking unit (42) in each case in an idle state of the rotary printing press is placed on the respective printing form cylinder (32) such that in the at least two printing units (05; 06) a color strip is formed on the respective at least one ink-free print form arranged on the respective printing form cylinder (32) by means of a placement of at least one of the respective first ink rollers (46; 50) of the respective inking unit (42), wherein after a defined application time the at least one ink roller (46; 50) placed on the respective print form on the respective printing form cylinder (32) is moved away from the relevant print form on the respective printing form cylinder (32) again.
13. The method according to claim 12, characterized in that the rotary printing press is set into its operating state of continuous printing, wherein a defined number of substrates (B) to be printed are fed to the printing units (05; 06) having the print forms with the color strips, wherein the color strips formed on the respective previously ink-free print forms in the switched off operating state of the respective at least one ink roller (46; 50) are transferred to substrates (B) fed to these printing units (05; 06), wherein the respective width of the color strips formed on the substrates (B) are determined to execute the checking of the press strips.
14. The method according to claim 9 or 10 or 11 or 12 or 13, characterized in that the respective color strips printed on the substrates (B) are assigned to the respective printing units (05; 06) with the assistance of a schematic drawing or a template.
15. The method according to claim 11 or 12 or 13 or 14, characterized in that in the relevant printing units (05; 06) the printing form cylinder (32) bearing the at least one print form in each case cooperate with an ink-free designed transfer cylinder (33), wherein the respective color strip formed on the relevant print form in each case is first transferred from the relevant print form to the relevant transfer cylinder (33) that had been ink-free up to that point and is transferred from this transfer cylinder (33) to the substrates (B) fed to the relevant printing unit (05; 06).

Images