EP3294555A1

EP3294555A1 - Printing unit, and method for operating a squeegee device in a printing unit

Info

Publication number: EP3294555A1
Application number: EP16717654.4A
Authority: EP
Inventors: Mathias Hirsch; Jürgen MANN; Uwe Müller; Hartmut Nickell
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 2015-05-13
Filing date: 2016-04-22
Publication date: 2018-03-21
Anticipated expiration: 2036-04-22
Also published as: CN108025547A; EP3294555B1; CN108025547B; DE102015208918A1; WO2016180616A1

Abstract

A printing unit (02) according to the invention of a printing press which prints a printing material at at least one printing point in accordance with a screen printing method comprises a screen-printing screen (43), a squeegee (44) which, in a thrown-on position, is set with a squeegee edge against the screen-printing screen and/or can be set against the screen-printing screen, and a bearing device (53) which makes throwing on and off possible between the thrown-on position of the squeegee (44) and a thrown-off position, which bearing device (53) is arranged, for example, indirectly or directly on a frame which supports the screen-printing screen (43) indirectly or directly. Furthermore, it comprises a drive device (74), by way of which the squeegee (44) can be thrown onto the screen-printing screen (43) and can be thrown off the latter, and a drive means (56) which is included in the drive device (74) and by way of which the throwing-on and throwing-off movement of the squeegee (44) can be brought about mechanically independently of a rotational drive of the screen-printing screen (43) and of a conveying means which conveys the printing material. Here, the drive means (56) which brings about the throwing-on and throwing-off movement can be moved reproducibly via a control device (64) which controls the drive means into at least one operating state which brings about a thrown-off position and at least two further operating states which are defined differently from one another and the taking up of which results in each case in a thrown-on position with radial relative positions and/or throwing-on forces which are different from one another between the squeegee (44) and the screen-printing screen (43). In order to throw on the squeegee (44), it is moved from a thrown-off position ("AB") into a thrown-on position ("AN"), which can be varied with regard to the intensity of the throwing-on action, by way of the drive means (56) which brings about the throwing-on and throwing-off movement of the squeegee via a control device (64) which controls the drive means.

Description

description

Printing unit and method for operating a doctor device in a printing unit

The invention relates to a printing unit and a method for operating a

Doctor device in a printing unit according to claim 1 or 44.

WO 2007/1 19167 A2 discloses a machine for multi-stage processing and / or processing of sheet-shaped substrates with a screening machine comprising a round screen and a squeegee and a plurality of upstream offset printing units. In a first embodiment, in pressure-on the round screen through the squeegee in the direction

Impression cylinder elastically deformed and thereby employed. When a counter-pressure cylinder pit passes through the nip point, the squeegee is moved radially inward so that the deformation is canceled out when the squeegee contact continues to exist and the round wire lifts off from the impression cylinder. In a second variant, the round screen with doctor blade is lifted altogether during Nippdurchgang the pit.

A printing press is known from EP 1 820 646 A2, which in one embodiment comprises a screen printing machine comprising a round screen and a squeegee, as well as several

Includes offset printing and a dryer. To roll over a

Gegenruckzylindergrube a collapse of the round screen to prevent, is applied to the round screen on the corresponding peripheral portion of a projecting in this section over the remaining lateral surface layer.

EP 1 717 028 A2 also discloses a printing machine having a screen printing unit and offset printing units, wherein, however, the screen printing cylinder is mounted on a printing machine

Counter-pressure cylinder pit corresponding peripheral portion carries a round screen supporting protection. US 5,630,363A discloses a printing machine having a flexographic printing unit and an offset printing unit.

EP 0 723 864 A1 discloses a rotary screen printing unit with a screen printing form and a doctor blade, wherein the doctor blade is turned off via a cam control during the passage of a counterpressure cylinder pit through the nip point and subsequently turned on again until the next passage.

Also in EP 1 246 726 B1 a squeegee on a cam to the

Screen printing form switched on and off, this should also be possible pneumatically, electronically or hydraulically. The squeegee is here at a rigid on

Machine frame arranged blade holder purely translationally movable. In addition to this, in the case of wear, a linear readjustment of the doctor blade can take place.

By EP 1 724 1 13 B1 is a storage device for a round screen of a

Siedruckwerks known, wherein the round screen is mounted on both sides in independently axially movable brackets. About two-sided eccentric is a

Axial distance adjustable to an impression cylinder and an additional

Eccentric bearing on one of the sides also an axle pitch variable. About an axialrelativbewegliche helical toothing in the drive train is a circumferential position relative to the impression cylinder variable. An extending inside the screen cylinder and a doctor-bearing blade holder pneumatically diametrically to the frame movable.

In EP 2 848 406 A2 a squeegee carrier receiving a squeegee is in each case pivoted to set a squeegee angle by a motor provided for this purpose. The doctor blade plates supporting the doctor carrier are in turn pivotally mounted on a frame part for engagement and disengagement of the doctor blade and can be pivoted by a pressure medium cylinder. The in-set position center distance to the impression cylinder is hereby adjustable by a screw acting as a stop. About one Adjustment eccentric is also a contact line of the squeegee in Nipp between Siebdruck- and counter-pressure cylinder present tangential direction possible. Finally, this is the screen printing device with doctor carrier and the Rundsieb overlapping part frame

pivotally mounted on a machine frame and by a

Total pressure cylinder operated on and off.

DE 75 02 041 U and EP 0 071 014 A1 disclose screen printing units with a squeegee device.

The AT 343 075 B relates to a squeegee device for a cylinder printing machine with a doctor blade, which by pivoting about a coincident with the contact line pivot axis in the squeegee angle adjustable, and by pressing one on the

Doctor blade supporting inflatable body from the inside against the pressure cylinder is adjustable.

The invention has for its object to provide a printing unit and a method for operating a doctor device.

The object is achieved by the features of claim 1 and 44, respectively.

The advantages that can be achieved with the invention are, in particular, that a machine or printing stage which operates in a particularly variable manner with regard to its range of application is provided, if appropriate, inter alia, by a printing-through method.

In a special embodiment as pure further processing and / or

Enhancement stage can be ensured by a - preferably particularly variable running - print-through printing high quality without this being done at the expense of overall productivity in the printing. Of very particular advantage of variable to be used printing stage, especially screen printing stage, axes of movement of actuating movements of a doctor blade are located straight or largely in their theoretical direction of action. Independently of this, or in addition to this, it is particularly advantageous to provide adjusting movements in at least more than two stages, in particular at least in operationally provided

Infinitely variable adjustment range.

In a particularly advantageous embodiment of a squeegee and the printing form comprehensive printing device, this is not only in print-on and print-Ab, but also to spend in a maintenance and / or set-up.

Advantageously, adjusting movements of the printing device are realized via as few movement axes as possible.

It is also of particular advantage that adjustments to variable substrate thicknesses and / or to variable screen thicknesses and / or to varying printing format lengths during setup can be carried out particularly simply and quickly. This applies in the same way to changes in parameters that are required during the printing process due to changed conditions and / or pressure quality reasons.

A particularly advantageous printing unit comprises a printing material which prints a printing material on at least one printing location in accordance with a screen printing method, for example a printing press. B. a screen printing form, a squeegee, which is employed in a Anstelllage with a doctor edge against the screen printing form and / or against the screen printing form can be adjusted, and an on-and-off between the Anstelllage the doctor and a storage position

enabling storage facility which z. B. medium or directly on a screen printing medium or directly supporting frame is arranged. Further, it comprises a drive means by which the squeegee to the On and off of this screen printing, and by the drive means comprising drive means by which the arrival and Abstellbewegung of the doctor is mechanically independent of a rotary drive of the screen printing form and of the printing material promoting conveyance effected.

In a preferred embodiment of such an advantageous doctor device that the arrival and Abstellbewegung causing drive means via a drive means controlling means reproducible in at least one Abstelllage effecting operating condition and at least two other different operating conditions defined different occupying each taking a Anstelllage with each other Radial relative positions and / or Anstellkräften between doctor and screen printing result.

When operating the printing unit of an arcuate printing material by a screen printing process printing press on and off a doctor blade is carried on a carried by a screen printing cylinder screen printing on a

Drive device by a specially provided for this, mechanically from

rotational drive of the screen printing cylinder and a co-acting with this impression cylinder drive means, wherein for hiring the squeegee by the activation and Abstellbewegung causing the doctor drive means via a drive means controlling control means from a storage position in a variable with respect to the strength of Anstellens Anstelllage, in particular is spent in a defined of several definable by variation Anstelllagen.

In a particularly advantageous development of such a printing unit, a printing material is applied to at least one printing location according to a screen printing method

printing machine with a designed as a screen printing cylinder

Form cylinder, the screen printing cylinder forming an abutment

Impression cylinder and a doctor device comprises the latter a screen printing form, a squeegee against the screen printing form in an Anstelllage is adjustable, in the region of both end faces of the screen printing cylinder, the squeegee medium or directly overlapping and a stop and Abstellbewegung between the Anstelllage the squeegee and a storage position enabling storage device, a drive device through which the squeegee on the screen printing form on and off this abstellt, and one of the drive means comprising drive means by which the arrival and Abstellbewegung the doctor mechanically and independently of a rotary drive of the screen printing form and conveyed by a substrate conveyor cyclically and synchronized to a

Machine or printing material phase position is effected or is effected. Furthermore, the printing unit comprises a control device connected to the drive means for its control and the squeegee with control means depending on the size of the printing material and / or the printed image of varying phase lengths and / or positions.

For operating the printing unit or the squeegee device in a printing machine by a screen printing process printing machine, a squeegee against the screen form in an Anstelllage is adjustable, with an on and off the squeegee to the screen form via a drive device cyclically and synchronized to a machine and / or printing material phase position, and wherein the cyclic on and off of the doctor blade by a specially provided for this purpose drive means mechanically independent of a rotary drive of the screen printing form and of a

For the operation of the printing press with mutually different printing material lengths and / or print image lengths, the doctor blade is switched on and off with different amounts depending on the same cycle length

Phase length for a phase concerned the Anstelllage

An advantageous machine for multi-stage processing and / or processing of

sheet-shaped substrates comprises at least one z. B. og printing unit, which works as a Bedruckstufe first type than after a rotary printing process is trained. The sheet-like substrate is on a Bedruckstoffweg by the machine between a substrate template and a display through the working according to the rotary printing through printing stage feasible and inline printable. The printing stage which operates according to the rotary screen printing method comprises a screen-printing cylinder and a squeegee which can be positioned in the screen printing cylinder in or adjacent to the nip point to form an impression cylinder from the inside against a screen printing form, and a doctor blade directly or indirectly

supporting bearing device, wherein in the Bedruckstoffweg at least one further, different in type and / or type of the first processing stage further arc processing and / or processing processing stage is provided. As a further processing stage, the printing image is provided in the printing material path by a printing method which differs from the screen printing method in direct printing on the printing substrate which transfers the printing material. In a preferred development, the printing stage which operates according to the rotary screen printing method comprises a screen printing cylinder which is mechanically independent of the rotary drive of the impression cylinder and rotatory

driving drive means and / or one on and off the squeegee effecting drive means with one of the rotary drive of the Siebdruck- and the

Counter pressure cylinder (04; 06) mechanically independent drive means.

In an advantageous process for the production of printed products from sheet-shaped substrates, printing material sheets are processed on their way through the machine to the exit in at least one of the rotary screen printing methods

Printed on a rotary screen printing method and before or subsequently printed by at least one further printing stage by a different screen printing method printing process, wherein the printing material in the operating according to the rotary screen printing printing stage passed through a Nippstelle between a screen printing cylinder and a counter-pressure cylinder and a squeegee in the screen printing cylinder in a Section area at or adjacent to the nip synchronized to a machine and / or printing stock phasing to one of Screen printing cylinder worn printing form is switched on and off. The printing material sheets are printed in the machine by at least one further printing stage according to a different from the screen printing direct printing method.

In a further development for the production of printed products from the sheet-shaped substrates already printed after a planographic printing substrate on the input side of the machine supplied and on their way through the machine to the output at least simply after a printing process and additionally at least one more time after one of the Durchdruck- and from

Flat printing process printed various printing process and / or superficially cleaned by a the printing process upstream conditioning.

In a preferable plant for the production of printed products

sheet-shaped substrates is such a machine as Weiterverarbeitungsund / or finishing machine and in addition to this one with respect to the printing material decoupled and independently operable printing machine with one or more operating according to a planographic printing stages provided.

Fundamentally independent of, but particularly advantageous in connection with an embodiment of an aforementioned printing unit, machine and / or system, the bearing device comprises bearing means, by which at least within a Anstelllage and a Abstelllage comprehensive adjustment range of the squeegee along straight and / or one in the unloaded Touch condition, d. H. in the state of first contact of the screen printing plate without additionally impressed doctor blade pressing, extending and extending perpendicular to the doctor edge longitudinal extent of a doctor blade covered by the doctor blade takes place.

Basically independent of, but particularly advantageous in connection with an above-mentioned, preferred embodiment of the machine and / or system and / or one or a plurality of said two preferred embodiments of the two mentioned preferred embodiment of a squeegee device for a printing substrate on at least one printing point by a screen printing method printing

Printing machine includes this z. B. a screen printing form, a doctor blade in a

Anstelllage employed with a doctor edge against the screen printing form and / or against the screen printing form can be adjusted, and a storage device with a squeegee medium or directly supporting storage means which pivotable about a blade edge parallel to the pivot axis at one - especially the

Screen printing form medium or directly supporting - frame is arranged and causes a pivoting of a squeegee angle formed between a doctor blade of the doctor blade and the screen printing form during pivoting. The pivot axis of the bearing means coincides in a preferred embodiment with a theoretical contact line, which by a in the unloaded contact state of the doctor, d. H. in the state of the first contact of the screen printing form by the doctor blade edge without additional impressed doctor blade pressing, extending line is given.

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

Show it:

Fig. 1 is a schematic representation of the execution of a flat

Printing material processing and / or processing machine with at least one screen printing unit;

Fig. 2 are schematic representations of the advantageous embodiment of a

Finishing machine running machine with a

Siebdruckaggregat and a) after a rotative Tief- or

High-pressure process working pressure unit and b) a this additionally upstream conditioning unit;

Fig. 3 is a schematic sectional view of a counter-pressure cylinder

co-acting screen printing form;

4 shows an oblique view of a bearing device which supports the doctor blade on a frame;

Fig. 5 is a schematic representation of the doctor blade or the doctor blade in a

An-Abstellzyklus;

6 shows a schematic representation of an on-off cycle as a function of the stock length;

7 shows a schematic representation of an on-off cycle as a function of the print image length;

8 shows a schematic representation of an on-off cycle as a function of the stock length;

Fig. 9 is a perspective oblique view of running as a screen printing

Bedruckstufe;

Fig. 10 is a schematic representation of different relative positions between

Printing screen or screen printing cylinder and impression cylinder;

1 1 is a sectional view of a first embodiment of a screen printing device covered by the screen printing;

Fig. 12 is a sectional view of a second embodiment of a screen printing included screen printing device;

13 shows a longitudinal section through a screen printing device encompassed by the screen printing unit;

14 shows a first exemplary embodiment of a squeegee which can be varied in the position of the contact line;

15 shows a first exemplary embodiment of a blade which can be varied in the position of the contact line.

A machine 01 which processes and processes a two-dimensional substrate B as a substrate B comprises at least one processing substrate B printed by a rotary printing process, in particular a screen printing process, in particular in the form of a printing stage 02. This is, for example, by a substrate B on at least one of its pages in at least one printing point 03 at least simply printing unit 02 given. The printing unit 02 is designed in particular as a rotary printing unit 02, in particular as a rotary screen printing unit 02, wherein the printing point 03 between a form cylinder 04, in particular screen printing cylinder 04, formed printing cylinder 04 and effective as an impression cylinder 06 printing cylinder 06 is formed. Basically, the processing stage 02 or the printing couple 02 may include a plurality of forme cylinder 03 or 03 pressure points, wherein the forme cylinder 04 then z. B. with different impression cylinders or advantageously with a same impression cylinder 06 together.

Although the machine 01 with respect to the processing of the printing material B may be limited to this one, working by the screen printing process stage 02, in a preferred embodiment of this processing stage 02, however, in

Bedruckstoffweg the machine 01 one or more other processing stages 07; 08; 09; 1 1 before and / or downstream of the working to the printing process printing stage and by which or which of the printing material printed or printed substrate B in the same machine 01 inline additionally one or more times processed in a different through printing method or are different can. In this case, the machine 01 for the case of several other, different to the printing process stages 07; 08; 09; 1 1 processing steps 07; 08; 09; 1 1 different types and / or processing stages 07; 08; 09; 1 1 include a same kind, z. B. in the manner of a printing stage and / or in the manner of a

Conditioning stage. In the case of further processing stages 07; 08; 09; 1 1 of a same kind may be of different types and / or same type, for. B. printing levels of the same or printing levels of different printing methods (eg, planographic printing, high pressure, gravure, digital printing or possibly other) or z. B. conditioning of the same type of treatment or different types of treatment (eg., Drying, moistening, cleaning or possibly other) belong.

In particular, by their execution as operating according to the rotary screen printing process stage 02 or as a rotary screen printing 02 this or this is while maintaining a fluid material movement in a particularly advantageous manner in a multi-stage processing and / or processing, eg. B. a multi-stage process for finishing, integrable.

This can in a first embodiment, the integration into a plurality as printing units 02; 07; 09; 09 'trained processing stages 02; 07; 09; 09 'comprehensive machine 01, which downstream and / or preferably upstream of the printing or screen printing 02 one or more further, operating according to a different printing method of this pressure stages 07; 09; 09 ', z. B. one or more after the offset printing process and / or one or more after a low or preferably high-pressure process and / or one or more after a pressure-formless or

Digital printing processes, in particular inkjet printing processes, operating printing stages 07; 09; 09 '(see eg Fig. 1).

In an embodiment of the machine 01 which is preferable with regard to quality and efficiency, the processing stage 02 operating according to the screen printing method or the

Rotary screen printing 03 - which concerns the printing material - provided without inline coupling to one or more after a planographic printing process, in particular by the offset process, working processing stages 07. The machine 01 comprising the at least one screen printing stage 02 is thus preferably a single-stage or preferably multi-stage further processing machine 01, in particular

Refining machine, trained, which input side in z. B. a temporally upstream and independent production step at least simply printed, in particular at least one or more times by the offset printed substrate B is supplied.

In other words, a preferred as further processing or

Finishing machine 01 trained machine 01 z. B. at least two of

Further processing and / or finishing of previously printed in a separate, with respect to the material flow decoupled process printed substrate B serving

Processing stages 08; 09; on. In particular, the printing material B supplied on the input side has, for example, a printed image applied by offset printing at least on one side. The further processing or in particular finishing machine 01 is then limited to a further processing and / or finishing and is preferably without a planographic printing method, in particular without the

Offset printing method working processing stages formed. In addition to a printing stage 02 working according to the through-printing method, this machine 01 may preferably be a printing press, in particular a flat and / or offset printing stage, working according to a gravure or gravure printing method

Direct print on the substrate B transmitted Bedruckstufe 09 include. Alternatively, or in addition, it can be used as a further Bedruckstufe also after a Digital printing process operating pressure level include, which can also serve for subsequent finishing and / or individualization and / or regularly reached not achievable by planographic production speed.

A plant for the production of printed products from -. B. still unprocessed or already pre-processed - B can then, for example, both one or more such processing or in particular finishing machine 01 and at least one z. B. faster running, not shown here explicitly

Plane printing machine, in particular offset printing machine, with one or preferably more according to a planographic printing process, for. B. the offset method working printing stages, in particular printing units include. While these may in principle comprise one or more additional printing stages operating in their particular inline to continuous printing material path from their original to the delivery, they preferably do not use a processing stage which operates according to a throughprint process, in particular a screen printing process. The printed products can be produced

End products themselves or intermediates represent.

A machine 01 designed as a further processing machine 01 comprises

For example, at least one of the screen printing stage 02 in the printing material inline nach- or preferably upstream, after a rotary low or preferred

High-pressure method, in particular by the Flexod jerk method working and / or the printed image in direct printing on the substrate B transferring processing stage 09, which is designed for example as gravure or preferably as high-pressure, in particular as a flexographic printing 09 or -druckwerk 09 (z Figs. 1, 2a and 2b). In addition to this, or possibly instead, as a further pressure stage 09 'one after one

druckformlosen or digital printing process working printing 09 'of

Flat pressure stage 02 nach- or preferably upstream. In a particularly advantageous development of the through-pressure stage 02 and this exactly or at least one further Bedruckstufe 09; 09 'one of the conditioning of previously printed substrate B, in particular a powdering processing stage 08, such as a z. B. a calendering comprehensive conditioning stage 08, be provided as conditioning 08. The latter may also be referred to as a cleaning stage 08 and / or a suction and / or blowing agent and / or mechanical stripping medium or other suitable for cleaning means comprehensive conditioning stage 08 be executed. Through this, for example, a powder to be removed, which was provided between the layers of the input material provided on the substrate B to prevent enticing the already printed surfaces.

For the execution of the or another in the printing material of preferably designed as a pure finishing machine 01 machine 01 provided

in particular a printing unit 09 operating in the flexographic printing method can be applied by means of this ink in a first advantageous embodiment variant, and in a second paint variant to be preferred, in particular transparent paint. In the second case, the working after flexographic printing unit 09 as so-called.

"Lackwerk" 09 formed and includes, for example, in a pressure fluid supply, not shown, or in a pressurized fluid supply means a supply of a paint applied to the pressure point.

In principle, such a processing stage 09 serving for processing, for example such a printing unit 09 or coating unit 09 designed as gravure printing or preferably as high-pressure printing unit 09, could also comprise one or more offset printing stages 07 inline in addition to the screen printing stage 02 combined offset and further processing or finishing machine 01

be provided. However, this may require reductions in either the quality of

Refinement or reduced in the opposite to a possible performance Production speed of offset printing.

In both in an offset printing 07 and the further processing or finishing inline comprehensive press 01 as well as in the design as pure, without

Offset printing units trained further processing machine 01, the printing unit 02 operating according to the printing process in a first embodiment as printing ink on the substrate B aufbringendes printing unit 02, z. B. screen printing 02, in a second, to be preferred embodiment varnish, in particular

transparent paint applying printing 02, z. B. as a screen-printing unit 02, executed. In the second case, the printing unit 02, which operates according to the through-printing method, is designed as a so-called lacquer printing unit 02, in short coating unit 09, and comprises, for example. B. in a pressure fluid supply, not shown, or in a

Pressure medium supply device a supply of a paint applied to the pressure point.

In the stated embodiments of the machine, in particular as pure, d. H. formed without flat or offset printing process further processing and / or

Finishing machine 01 trained machine, in the printing material can further at least one formed with means for accelerating the drying process processing stage 1 1, z. B. in the manner of a drying assisting conditioning stage 1 1, in particular a dryer 1 1, be provided. Such a dryer 1 1 is z. B. the printing or screen printing stage 02 downstream and / or designed as a thermally effective dryer 1 1, in particular as IR-T rocker and provides, for example, an improved paint history, d. H. a result in the particularly smooth surface structure of previously printed with ink and / or paint bodies.

The processing stages 07; 08; 09; 1 1 of the machine 01 may be provided in a common frame or in separate, but interconnected racks. In this case, the frame associated with the screen printing stage 02 or the latter comprises this associated part of the frame, for example, on at least one of its front side lying on the forme cylinder 04 pages an optionally temporarily closable opening 12, for. B. an inspection and / or maintenance hatch 12 through which - at low

Assembly costs - a blade change and / or a visual inspection of the

Form cylinder inside during operation is possible (eg indicated in Fig. 1).

The machine 01 comprises on the input side a Substratzufufhreinrichtung 13, z. B.

Substrate 13, in or on which the machine 01 on the input side of the - preferably already printed, in particular already printed in the offset process - - B -. B. depending on the nature of the substrate to be processed B in stacks, in a scale flow, in rolls or coils - is provided for the supply or is. On the output side, it comprises a substrate delivery device 14, z. B. display 14, in or on which of the machined in the machine 01,

For example, further processed, in particular finished printing material B 'after

Continuously the processing stages 07 provided in the printing material path; 08; 09; 1 1 for pickup, z. B. depending on the characteristics of the processed substrate B in stacks, in a shingled stream, in rolls or windings, is provided. Between the last processing stage 07; 08; 09; 1 1 and the display 14 can be a prolonged

Transport route 16, z. As a so-called. Extensions extension 16, be provided by which the transport time and thus the drying time is extended to the formation of the ready-to-pick-up container on the display 14 and / or on which one or more additional, formed with means for accelerating the drying process processing stages 17th , z. B. one or more, for example, as a radiation dryer 17, in particular as a UV dryer 17 running dryer 17 are provided. Instead or in addition to this, in the unextended or preferably extended transport path 16, a device 18 for quality control may also be provided, which may be, for example, an image acquisition device, for example a camera, or at least may comprise. Although the substrate B for the above-mentioned machines and in variation to subsequent illustrations basically also web-shaped and the

Machine 01 may be designed as web-processing and / or processing, the printing material B is given in this preferred embodiment by arcuate substrate B, wherein the machine, but at least the Siebdruckstufe 02 and possibly one or more downstream downstream processing stages 07; 08; 09; 1 1 comprehensive part, designed as bow-and / or processing. The term "sheet" here means, for example, any type of sheet-like substrates B which, as individual material sections, eg not like web-shaped printing stock, are guided simultaneously through all processing stages 07, 08, 09, 11 of the machine 01, but rather a limited one Section length, so that they have left at least a first already processed processing stage 07, 08, 09, 11, before they come into operative contact with a last of the processing stages 07, 08, 09, 11, in particular flat and preferably rectangular printing material sheets B which may be formed, for example, from paper, from cardboard, from cardboard, from plastic, from metal or from a composite of a plurality of said materials The term "flat" means, for example, that one length and one width of the printing material sheet B in each case the 50-fold, in particular at least 100 times or even at least the 500-fac hen the thickness of the bow corresponds.

In the embodiment as an arcuate substrate B or printing material B loading and / or processing machine, hereinafter briefly as sheet processing machine 01, this includes, for example, in addition to the z. B. referred to as an investor 13 substrate template 13 in the Bedruckstoffweg the first processing stage 02; 07; 08; 09; 1 1; 16

upstream, for example, as a system 19 or sheet 19 designated

Alignment. The substrate delivery device 14 is formed by a delivery 14, which is designated, for example, as a product delivery 14. The screen printing stage 02 and possibly one or more of the above-mentioned further processing stages 07; 08; 09; 09 '; 1 1; 16 is between the substrate supply means 13 and the substrate discharge means 14 are the one or more processing stages 02; 07; 08; 09; 09 '; 1 1; 16

arranged.

The feeder 13, the one as printing stock on z. B. a stacking plate

mounted sheet pile receives, preferably not shown in detail sheet separating organs and sheet transport organs, which

For example, designed as a vacuum cleaner and as a transport suction and are. In order to avoid stopping the machine 01 during the so-called "change" of the stack of sheets, ie the reloading of the feeder 13 with a new stack of sheets, the feeder 13 is equipped with a nonstop device (not shown here). B. on a retractable into the stack template area of the investor 13, arranged on a plug-in auxiliary stack carrier, which is designed in particular as a rake, roller blind or plate.

The z. B. also referred to as a stack feeder or sheet feeder 13 follows downstream, for example, a z. B. as a belt table, especially as

Suction belt table, trained conveyor line 21.

The sheet feeder 19 preferably comprises a feed table, wherein in the working cycle of the printing material to be supplied sheet in the same to their movement

Alignment z. B. as so-called front lays designated attacks, in particular front stops are performed. The attacks is z. B. a particular as

Oscillating gripper 22 trained bow acceleration means 22 downstream, which aligned with respect to the leading edge and optionally with respect to a side edge printing material B a z. B. as a feed drum 23,

in particular transfer drum 23 designated conveying means 23 supplies. As an alternative to the stops, the sheet B can also be moved into its correct position during the movement of the oscillating gripper and can be transferred in an aligned manner to the feed drum 23. The feed drum 23 passes the coming of the conveyor line 21 forth Substrate B directly or optionally via one or more other transfer drums on the transfer and / or serving as an abutment and preferably as a rotating body 06; 24; 26 trained funding 06; 24; 26 of the downstream first processing stage 02; 07; 08; 09; 09 '; 1 1, in particular in the case of

Further processing machine 01 z. B. a preferably as a rotating body 24, in particular also referred to as a cylinder 24, transfer cylinder 24 or drum 24, formed funding 24 a gravure or high pressure compression stage 09,

in particular a flexographic printing stage 09, or a z. B. also designed as a rotating body funding a druckformlos Working Bedruckstufe 09 '.

Is for further development of preferably designed as a further processing machine 01 machine 01 one of the Durchdruckstufe 02 and a preferably further Bedruckstufe 09; 09 'upstream conditioning stage 08, z. B. serving a removal of powder conditioning stage 08, provided, the printing material B of the

Anfeedrommel 23 directly or possibly one or more further transfer drums to a z. B. referred to as a rotating body 26, in particular as a cylinder 26 or drum 26, trained funding 26 of the respective conditioning stage 08 passed.

In a preferred embodiment, at least those in the printing stages 02; 09; 09 'and in the possibly the Bedruckstufen 02; 09; 09 'upstream conditioning stage 08 on the substrate B with the respective processing tools 04; 29; 31 of the

relevant processing stages 02; 08; 09; 09 'cooperating conveyor 06; 24; 26; 28 as a rotating body 06; 24; 26; 28, in particular as a cylinder 06; 24; 26; 28 or as drums 06; 24; 26; 28 designates executed. concerned

Processing tools 04; 29; 31 hereby by the above for the

Punch 02 already executed form cylinder 04, by a in the further Bedruckstufe 09 with the rotating body 24 a pressure point forming cylinder 29, z. B. printing cylinder 29, or by a cooperating with this pressure-free printing device, and possibly by a in the conditioning stage 08 with the abutment forming rotating body 26 together cleaning tool 31, z. B. a powdering serving calender roll 31 may be formed as a processing tool 31. The cleaning tool 31, for example, as a - preferably

"Non-fluid", in particular "non-pressure fluid-carrying" (i.e., non-ink-bearing or non-paint-carrying) roller 31 - acceptance device 31 is formed.

The cleaning stage 08 may for example be designed similar to a printing unit, wherein one or more rollers 31 with a printing substrate B transporting counter-pressure cylinder 31 cooperate, but without applying a pressurized fluid or fountain solution to the substrate surface. In this case, this conditioning stage resembling a printing unit is designed without a pressurized fluid supply or supply. You can in contrast, however, with a discharge device or a container for receiving the removed impurities, eg. As powder.

The cleaning tool 31 can thus be arranged to act together as a roller 31 in rolling contact with the surface to be cleaned. Ion of an alternative, not shown, it can also be arranged as a suction or blow mold contactlessly interacting with the surface to be cleaned.

In a preferred embodiment as bow-and / or processing machine 01, the rotating body 06; 24; 26 to take over or hand over the to be promoted

Substrate sheet B in its peripheral portion holding means 32, for example, in each case one or more in the circumferential direction from each other z. B. equidistantly spaced and explained in more detail below holding devices 32, z. B. gripper devices 32, in particular gripper bars 32, on.

Between the with the editing tools 04; 29; 31 cooperating rotating bodies 06; 24; 26 at least the printing stages 02; 09; 09 'and the possibly the Print stages 02; 09; 09 'upstream conditioning stage 08, the printing material B are either transferred directly or preferably via in each case at least one further, z. B. as a rotating body 33 formed conveyor 33, in particular also referred to as a transfer drum 33, promoted, which also in their

Peripheral area holding means 34, for example, one or more in each case

Circumferential direction of each other z. B. equidistantly spaced holding means 32, gripper bars 34 have.

Is as a dryer 1 1, in particular as a thermal dryer 1 1 formed and preferably the display 14 and the optionally provided delivery extension 16 upstream conditioning 1 1 provided in Bedruckstoffweg, so can also in this transport over a rotating body 36, in particular denoted as cylinder 36 or drum 36, formed conveying means 36 take place, which or which for the application of desiccant, z. As a heated gas stream or IR radiation, with an appropriate means, for. B. a hot air blower or preferably a radiation source 37, in particular IR radiation source 37, as

Machining tool 37 interacts.

After the last downstream printing stage 02; 09; 09 'and a possibly downstream thermal conditioning stage 1 1, the delivery to a further processed printing material B' to delivery 14 promotional conveyor system 38, which is preferably designed as a chain conveyor system 38 and for guiding and promoting a z. B. formed as a chain 39 circulating traction means 39, a number of sprockets 41 formed as drive and / or guide wheels 41 and for receiving and delivering the printing material B to be opened and closing, not shown here holding means, eg. B. gripper includes. In the field of recording the printing material, the previously open gripper to take over the sheet are closed, whereas they are used to deliver the sheet in the area of the display 14 z. B. be opened above the stack to be formed. In a preferred embodiment of the further printing stage 09, this is designed as a printing stage 09 operating according to a direct printing method and / or high-pressure method, in particular as a printing stage 09 operating according to the flexographic printing method, in which case the cylinders 24; 29 as

Counter-pressure cylinder 24 and form cylinder 29 are formed. It carries the

Form cylinder 29 on the periphery of one or more printing plates whose raised areas are image bearing. The printing plates are replaced by at least one roller

Druckfluidauftragvornchtung 42 (regardless of whether ink or paint is to be applied here also referred to as inking unit 42), in particular by a

Anilox roller dyed, which in turn is colored by a Einärbesystem. The latter may comprise a roller immersed in a paint or varnish stock which colors the raster screen and a squeegee absorbing excess ink on the raster roller. Preferably, the inking system is executed by a the chamber roller inking chamber doctor.

In an embodiment not shown here further, z. B. as an inkjet printing stage 09 'running pressure stage 09' or a further development with an additional additional pressure step is the pressurized fluid, d. H. the printing ink or varnish, applying tool 29 z. B. as one or more printheads, especially inkjet printheads formed.

The printing stage 02, which preferably takes the form of a screen printing stage 02 and functions according to the throughprint method, comprises a mold cylinder 04 designed as a screen printing cylinder 04. A printing form 43 carried by the forme cylinder 04 is for the preferred case of a printing unit 02 operating according to the screen printing method by a screen printing form 43 is given for the case of rotary printing, for example, as a so-called. Round sieve 43, which forms the or at least a portion of the cylinder jacket and a template with the negative of the printed image of a on the substrate B, ie the sheet B or a raport length of a web-shaped substrate B, to be applied repeat length. In the case of planographic printing, the printing form z. B. executed as Flachsiebdruckform. In the case of

Rotational pressure rotating printing form 43 and the printing material B move synchronized in operation via a mechanical or electronic coupling so relative to each other that each unwound equal lengths to each other. When guiding substrate B by way of a counter-pressure cylinder 06, both lateral surfaces roll over the printing substrate B to be printed substantially without slippage.

The pressure point 03 is through the Nippstelle between form cylinder 04 and

Counter-pressure cylinder 06 formed.

For pushing through located in the interior of the round screen 43, z. B. as

Printing ink or printing fluid F formed as a varnish through the open areas of the stencil of the printing form 43, in particular through the uncovered mesh openings of a screen fabric or through openings in a printing plate 43 produced by electroforming, a certain compressive force is required. This is produced by means of a scraper 44, which acts as a squeegee 44, which effects a dynamic pressure of the pressurized fluid F held by it on the printing form 43. In a rotatable

Round sieve 43 is the z. B. operatively rotationally fixed in the interior of the screen printing cylinder arranged doctor blade 44 in the region of a free, d. H. not clamped end portion, pressed with a pressing force from the inside against the rotating screen. The free, effective for the doctoring end portion may be through the front, effective as a doctor blade 52 part of the doctor blade 44 itself or - as shown here - by a part of a specially enclosed by the doctor blade 44 blade 52. In both cases, the doctor blade 52 thus designated forms a doctor blade edge on the end cooperating with the printing form 43.

The squeegee 44, in particular the squeegee blade 52 formed by it or encompassed by it in the region of the free end, is - in particular from the inside - forming a Also referred to as squeegee angle α, preferably acute angle α (ie α <90 °), z. B. one between 40 ° and 85 °, in particular between 70 ° and 85 °, to which - in particular trained as a round screen 43 - screen printing 43 engageable or hire. The hiring takes place in a section area at or adjacent to the nip 03 with the impression cylinder 06, z. B. within a peripheral portion in the screen printing plate 43, for example, at most ± 10 °, in particular at most ± 7 ° (to the

Rundsiebachse) or for example at most ± 15 mm, in particular at most ± 10 mm (in Rundsiebinnenumfangsrichtung) from the line, which is given by the intersection of the undisturbed impression cylinder peripheral surface with the rotation axes in Anstelllage connecting plane. In this case, the doctor angle α should be understood to mean that angle, viewed in a sectional plane perpendicular to the axial direction of the printing plate 43, at the contact point P of the doctor blade 52 between its free end and a doctor carrier 54 carrying the doctor blade 44 in the unloaded, d. H. without contact force, just touching state extending longitudinal extent and the present at this contact line course of the perpendicular to the axial direction extending inner circumferential line, d. H. the present at the touch point P.

The contact recognizable in the cross-sectional representation as the respective contact points P forms, viewed in the axial direction, a contact line L1 which preferably extends axially parallel, which here also designates as a "theoretical" contact line L1 due to the assumption of an unloaded, ie non-deformed operating state becomes.

By a possibly applied during operation adjusting force can be a deflection, in particular reduction, of the actually effective at the contact point P effective angle over the above-mentioned manner via a deflection of - in the manner outlined above as part of the squeegee 44 or covered by this - defined doctor angle α are present. This possibly present under load deviation in the inclination of the present in the near-near blade section and / or the blade angle α corresponding inclination can for the subsequent subsequent consideration of preferred adjustment of the squeegee angle α (in the above definition) are neglected or disregarded. It is for example less than 10 °, z. B. less than 5 °.

The doctor angle α - as it is defined here in the just unloaded contact state, for example, can be in the range of 70 ° to 85 ° and be variable in the manner set out below. This angle α is -. B. an originally flat and straight shape assuming - for example, even under load and possibly resulting deformation in the doctor blade 54 directly adjacent doctor blade section.

In the case of a sheet-processing printing stage 02 or a sheet-processing machine 01, one or more retaining devices 32 offset from one another in the circumferential direction are provided on the circumference of the impression cylinder 06, through which the printing material sheet B can be received on the input side by the upstream conveying means and output to the subsequent conveying means. Basically, the recording, holding and dispensing by any suitable means, for. B. based on a switchable negative pressure and / or releasable positive locking, be formed. In schematically indicated and preferred embodiment here, however, are provided as holding means 32 a one or a group of several grippers 46 comprehensive gripping means 32, through which the printing material B on the input side at its leading end are receivable and output side to the downstream conveyor line again. The

Gripper device 32 is in this case z. B. in a provided in the otherwise cylindrical surface of the cylinder 06 and axially extending recess 47, also referred to as pit 47, arranged, whose radially outwardly directed opening, z. B.

Pit opening, the cylinder jacket-shaped lateral surface interrupts and disturbs. In a multi-size version of the impression cylinder 06, d. H. one

Counter-pressure cylinder with a circumference on which several printing material sheets are to be successively received, are the appropriate number of Holding devices 32 and pits 47 in the circumferential direction one behind the other and each separated by a corresponding number of undisturbed cylinder jacket sections 48, also referred to as saddle or saddle pressure, separated.

A peripheral section U _{N which} can not be used as a pressure abutment can in principle be formed solely by the opening of the pit receiving the holding device 32 or, if appropriate, by this opening and, if provided, a functional section adjoining the forward and / or downstream side, for example an overlap area of a possibly upstream side provided, only here dashed lines indicated inking 49 and / or be followed by setting distance a _s to the trailing edge of the following pit opening, be given. Conversely, can be used for printing peripheral portion U _D basically by the lying between a leading end of the pit opening and the trailing end of the following in the circumferential direction the same or next following pit opening undisturbed cylinder jacket gate same.

An o. G. Einpräghilfe 49 may be provided to allow early setting of the doctor blade 44 in the forme cylinder 04 before reaching the pit end on the abutment-forming impression cylinder 06. It may be provided, for example, in the manner of a pivotable flap 49 on the impression cylinder 06, which pushes after gripping the printing material B via the gripper device 32 and thereby shortened in the circumferential direction length of the pit opening at least in the leading end of the printing material.

An effective at unwinding circumferential length of the screen printing cylinder 04 should be just or an integer multiple of the usable by the sum of the usable for the print length of the usable peripheral portion U _D and not usable for the print length of the disturbed, not usable as a pressure abutment peripheral portion U _N Cycle sounds L _z correspond. In the following, solutions are proposed by which, individually or advantageously, combinations of widely differing requirements for the desired printed image can be met, that is, an optimum print quality for the respective parameters can be achieved with the least possible effort, despite a wide variety of screen finenesses and printing fluid consistencies. This is not only, however

in particular in connection with a o. g., As Weiterverarbeitungs- and / or

Finishing machine 01 trained machine 01 of particular advantage, since such a machine 01 is to be able to process in a very diverse manner pre-printed intermediates in a variety of types and / or different print or substrate formats.

In order to be able to adapt the printing stage embodied as a screen printing stage 02 to different printing fluids and / or different screen sizes and / or types underlying the printed image, the squeegee 44 is provided with its squeegee blade 52 with regard to a screen printing form 43, in particular a unit of length along the

Contact line related contact force and / or variable with respect to the screen inside the height of the contact line in the above sense formed blade angle α and / or adjustable.

The z. B. in Fig. 3 only schematically shown in the interior of the forme cylinder 04 doctor blade 44 is part of a doctor device 51, which - such. 4 can be seen - in addition to the doctor blade 44 itself and possibly the blade 44 carrying and axially over at least the length of the doctor blade 44 extending blade carrier 54 at least one medium or directly on a frame 61, in particular on both sides, stocked storage facility 53 includes. Preferably, however, in each case one end of the doctor blade 44 and the doctor carrier of the doctor blade 52 on both sides of respective side parts 59 of the z. B. also the

Form cylinder 04 medium or directly supporting frame 61, bearing bearing device 53 includes. The doctor carrier 54 is for example by a single or Mehrteilge Traverse formed 54, on which the doctor blade 44 is arranged. As already stated, the doctor blade 52 may be formed by a front part of the doctor blade 44 itself, or may be included as a separate part of the doctor blade 44. In shown and preferred embodiment, the doctor blade 44 comprises a doctor blade 52 and a one- or multi-part doctor blade holder 58, on which the doctor blade 52 z. B. is releasably attached. The blade carrier 54 carrying the doctor blade 44 is, for example, in or on storage means of the respective

Bearing device 53 stored.

The squeegee device 51 further comprises one or more of the squeegee 44 and the squeegee 44 carrying doctor blade 54 relative to the screen printing or forme cylinder 04 moving drive means 56; 57, which z. B. via corresponding signal connections 62; 63 with the drive means 56; 57 controlling control means 66; 67 a merely schematically indicated control device 64 are connected. By way of example, first drive means 56 providing an activation and deactivation of the doctor blade 44 and / or second drive means 57 providing a change of a doctor angle α are provided. The drive means 56; 57 controlling control means 66; 67 of the control device 64 may be provided spatially in a same structural unit or distributed in a signaling-connected control system, wherein, for example, the control of the first drive means 56 concerning first

Control means 66 and the control of the second drive means 57 concerning second control means 67 may be provided. The control means 66; 67 may be configured as a control circuit or as a program routine programmed in data processing means. You can hereby as control modules 66; 67 a common control device 64 executed.

The bearing device 53, which movably supports the doctor carrier 54 and thus the doctor blade 44, is now designed and set up, the doctor 44 or the latter carrying it

Blade carrier 54 to pivot about an axis of rotation R0 of the forme cylinder 04 axis-parallel pivot axis S1 and / or the radial position of the doctor blade 44 relative to Rotation axis R04 of the forme cylinder 04 to vary. Although both or only one of the two actuating movements mentioned could be or be caused by manually actuatable actuators, at least one drive means 56; 57 provided. In the event that two bearing means 53 are provided for mounting the doctor carrier 54, basically only one of the bearing means 53, but preferably each bearing device 53, can have a corresponding drive means 56; 57 may be provided.

In a particularly preferred embodiment, the bearing device 53, in particular its pivoting effecting adjusting means, designed and arranged to pivot the doctor blade 44 and the doctor carrier 54 by the relevant

To make adjustment mechanism such that when pivoting the doctor blade 44 and the doctor blade 52 by an adjustment angle Δα within at least one operationally provided adjustment range of z. B. at least 15 °, preferably of at least 20 °, the measured on the inner circumference of the round screen 43 in the circumferential direction relative position between one with the pressure in the rotation axes R04; R06 connecting level formed on the inner circumference of the round screen 43 cut line V and the theoretical contact line L1 is not or at least not significantly, z. B. less than the hundredth part of acting together with the doctor blade 44

Round screen perimeter length, changes. In operating position, d. H. in print-on, o. g. Section line V and the contact line L1 coincide or based on the

Rotation axis R04 of the forme cylinder or the round sieve 43 by a small angle, z. B. offset by up to 5 ° or at least up to 3 ° to each other.

To give the doctor 44 or its doctor carrier 54, the bearing means 53 comprises a on the frame 61 and the two side parts 59 of the frame 61 by a z. B.

fixed to the frame pivot axis S1 pivotally mounted bearing means 68, z. B. an eccentric trained bearing or preferably a lever arm 68. The doctor blade 44 carrying the doctor carrier 54 is now -. B. at a radial to the pivot axis S1 spaced location - connected to the lever arm 68 such that upon pivoting of the lever arm 68 as a result, a pivoting of the doctor blade 44 takes place.

In the particularly preferred embodiment of the doctor device 51, this is embodied and arranged in such a way, in particular the bearing device 53 and its relative position to the screen printing form 43, that the pivot axis S1 of the or the

Doctor carrier 54 supporting lever arm 68 and lever arms 68 coincides with the theoretical contact line L1. By "collapsing", for example, an exact coincidence up to a coincidence with at most a slight, not fundamentally underlying solution thought essential impairing maximum radial offset between the theoretical contact line L1 and the pivot axis S1 be understood this maximum offset, for example, at most a tenth Part, in particular at most the twentieth part of the round screen inner radius present at the axial height of the interaction with the doctor blade 44 and / or, for example, at most 10 mm, preferably at most 5 mm Under the geometrically regularly not one-dimensionally extending contact line is in case of doubt the geometric center of possibly

forming, albeit extremely narrow, touch strip.

Basically, this approach can be as far as nothing contradictory results on a Flachsiebdruckverfahren be formed as a flat screen trained printing form or be.

The lever arm 68 can basically in different ways, for. B. by the

Eccentricity of the frame 61 rotatably mounted eccentric bearing or preferably be designed as an arm of a multi-arm or in particular one-armed lever 69. This can be in or on the frame 61 or in or on the respective side part 59 via z. B. a trained as a bolt 91 or stub axle 91 bearing means 91 and possibly a

friction-reducing radial bearing rotatably disposed about the pivot axis S1. The at least one or preferably both the blade carrier 54 supporting lever arms 68 are pivotable by at least one, preferably by in each case one in particular remotely actuable drive means 71, briefly drive 71, which or which already comprises an above drive means 57. In this case, the drive device can in principle be designed in various ways to cause a pivoting of the lever arm 68 with appropriate actuation of the drive means 57. In this case, the drive 71 and / or the drive means 57 directly or via a transmission between a -. B. with respect to the frame 61 fixed to the frame and / or fixed with respect to a radial distance to the round screen rotation axis - point 73, z. B. pivot 73, and a lever-proof point 72, z. B. rigid pivot point 72, be effective.

The coupling in the attack points 72; 73 are preferably gimbals mounted on the frame 61, so that in addition to the pivotal movement one possibly explained below in more detail

Sideways movement, z. B. for setting a page register can be recorded.

Regardless of the expression with or without transmission, however, the drive means 57 is designed and arranged in a preferred embodiment, reproducibly more than two defined, respectively different positions of the lever arm 68 representing drive operating states, or briefly operating states to approach.

In a particularly advantageous embodiment, the drive means 57 is designed and set up, at least within a control range, for example, a

Swiveling the lever arm 68 by an angle of 15 °, preferably at least 20 °, corresponds to allowing continuous placement. This continuous placement is basically to be realized by a wide variety of embodiments of the drive device 71, for example via a - possibly arcuate - rack, which by a z. B. electric motor driven pinion is pivoted. In here z. As shown, preferred embodiment, the drive of the lever arm 68 via a trained as a motor spindle drive 71 drive 71, wherein the spindle comprising the spindle gear and the spindle driving motor 56, in particular electric motor 57, in a unit as a spindle linear drive

can be summarized.

The preferably designed as an electric motor 57 drive means 57 is of the

Control device 64 forth, in particular by the implemented in this and appropriately configured and / or programmed control means 67, so controlled that by the - preferably as a motor spindle drive 71st

trained - drive 71 are continuously approached at least those operating conditions that within the o. g. Actuate lying pivot positions of the lever arm 68 represent.

The drive means 57 embodied as an electric motor 57 can be embodied as a position-adjustable or as a stepping motor or can form a control loop for reproducible position taking with an external position sensor. In an advantageous embodiment, the electric motor 57 is designed as a servo drive.

The two actuators 71 or their drive means 57 which act indirectly on the doctor blade 44 or on the doctor carrier 54 can basically be made synchronous with one another by the control device 64 or the relevant control means 67.

By means of the - in particular remotely actuated - swivel drive for the doctor blade 44, the doctor angle α can now be changed to any new circumstances and / or during operation for optimizing the printing result without manual adjustment effort.

In addition to the adjustment of the squeegee angle .alpha., In an advantageous development, a device which is not further described here can be provided, by means of which the Contact line L1 in tangential direction parallel to the Rundsiebachse or at an angle to this can be adjusted. The adjustment can be possible both in the printing direction or against the printing direction. Again, the type of adjustment is preferably realized by motor and thus an adjustment in printing operation possible.

Considered as a particularly advantageous solution aspect on its own or in particular advantageous in connection with o. G. Rotary drive 71 to a preferably straight or at least substantially with the theoretical contact line L1

coincident pivot axis S1, the doctor blade 44 and the doctor blade carrier 44 carrying the doctor blade 44 can be varied in its or their radial position relative to the screen printing plate 43. Preferably, this radial position is variable in a setting range, which in addition to stopping the doctor 44, d. H. a lifting of the blade edge from the undisturbed

Inner circumference of the unloaded Rundsiebes 43 to a distance a _A N of z. B.

at least 0.2 mm, beyond the first touch when hiring out

Pressing the doctor blade 44, in particular the doctor blade 52, d. H. an adjustment of the doctor blade 44 under possibly slight deflection of the doctor blade 44 in the region of its free

Endabschnittes or doctor blade 52 and / or the round screen 43, which z. B. on the assumption of lying in the touch point zero position one points to a negative distance a _A B of z. B. to - 0.2 mm or more negative.

The term "shutdown" of the squeegee 44 is here and below, however, in an alternative embodiment - unless explicitly excluded - including a displacement of the squeegee 44 to the inside in such a way that the squeegee 44 still after "shutdown" - z. B. slightly - in contact with the screen printing form 43 remains, however, for example, the relief caused by the radial displacement of the doctor 44 to further inside, a lifting of the previously by deformation of the abutment, z. B. the impression cylinder 06, or the substrate B employed Siebdruckform 43 results. An adjustment causes in this case a deformation of the lifted screen printing plate 43 by a displacement of the doctor blade edge outwards by deformation of the screen printing plate 43 at least one contact with the abutment, for. B. the impression cylinder 06, or the substrate B results.

The doctor 44 or the doctor carrier 54 is for performing o. radial adjusting movement by at least one, preferably by in each case one in particular remotely operable

Drive device 74, short drive 74, adjustable, which or which already o. G. Drive means 56 comprises. In this case, the drive device 74 may basically be formed in the most diverse manner, in order to effect, with appropriate actuation of the drive means 57, a location of the doctor blade 44 or of the doctor carrier 54 with respect to the relative position of the doctor edge to the round screen inside. In this case, the drive 74 and / or the drive means 56 in principle directly or via a transmission between a -. B. with respect to the frame 61 and / or relative to the escape of

Rundsiebdrehachse - fixed point and a squeegee or rakelträgerfesten point be effective. For the o. G. Fall of the one or two lever arms 68 pivotable doctor 44 and blade carrier 54 is the drive 74 and / or the

Drive means 56 z. B. between a hebelarmfesten point and a rakel or Rakelträgerfesten point effective.

Basically, regardless of the expression with or without gear drive means 74 is provided with a controllable drive means 56 through which the arrival and Abstellbewegung the doctor 44 mechanically independent of the rotary drive of the form and the impression cylinder 04; 06 and / or of the machine and / or printing material phase position Φ _{Μ is} effected. In addition, by such a drive device 74 and the controllable drive means 56 is preferably the measure of the employment or the resulting therefrom a Anstellkraft present in Anstelllage "AN", ie, for example, the above first contact in

Anstellrichtung going beyond movement of the doctor blade 44, variable.

These are the mechanically effective independent of the rotary drive radial effective drive 74th and the bearing device 53 carrying the doctor blade 44 or the doctor carrier 54 is preferably set up by appropriate means and designed to remotely vary the stroke of stopping and stopping, in particular at least the end position relating to the setting position "ON" corresponding activation of the drive means 56 by the control means 66 set up for this purpose itself or alternatively via a drive of a drive, not shown, which limits the adjusting movement stop means.The variation of the strength of the setting is effected, for example, with path-controlled doctor blade adjustment via a variation the end position which concerns the setting position "AN", in which preferably a control of the drive means 56 itself with respect to a position to be adopted or by possibly a position of a stop means bounding the adjusting movement is varied. In an alternative embodiment with force-controlled blade control, the variation of the intensity of the adjustment can take place via a defined variation of a force acting on the drive means 56 on the output side in the adjustment direction.

Preferably, the drive 74 and / or in particular the drive means 56 is designed and set up to reproducibly more than two defined, in each case from each other

various radial relative positions between blade edge and Rundsiebinnenfläche representing drive operating states BZ; BZ _AB ; BZ _AN ; BZ _'AN, or shortly

Operating states BZ; BZ _A B; BZ _A N; ΒΖΆΝ. in particular two or even more than two different Anstelllagen or Anstellkräfte representing operating conditions BZ _A N; ΒΖΆΝ, to start or take (see, for example, in Fig. 5 with a one Abstelllage "AB" and two different strong Anstelllagen representing

Drive operating states BZ _A N; BZ ' _A N shown). The specific operating state BZ _AN , BZ ' _AN conditional on the associated approach position "ON" can be defined, for example, in the control device 64 as the operating state BZ _AN ; BZ' _AN relevant for the positioning position the Anstelllage "AN" relevant and by the control device 64 for the Anstelllage "AN"

taking into account the operating condition BZ _AN ; For example, BZ ' _AN can have one Operator interface done and / or effects of an evaluation of originating from an inspection system data can be effected.

In continuation of the above for the term "Abstellens" mentioned, shall here and in the

Following in an alternative embodiment under the Abstelllage "AB" of the doctor blade 44 - unless explicitly excluded - and a position of the doctor blade 44 may be included, in which they still with the screen printing 43 after "shutdown" -. B. slightly - in

Berührkontakt stands, the screen printing form 43, however, for example, the discharge, which is caused by the radial displacement of the doctor 44 to further inside, from the abutment, z. B. the impression cylinder 06, or the substrate B is lifted. A

Anstelllage "AN" is given by a displacement of the doctor edge to the outside, in which by deformation the previously lifted screen printing plate 43 at least in contact with the abutment, eg., The impression cylinder 06, or the substrate B.

In particular, the drive means 56, which is mechanically independent of the rotary drive, and the squeegee 44 or the squeegee carrier 54 are arranged to vary the stroke of switching on and off, in particular the end position concerning the setting position, via the activation of the drive means 56. Basically, this one

Approach as far as nothing contradictory results on one

Flachsiebdruckverfahren be transferred with formed as a flat screen printing form or be.

In a particularly advantageous development, the drive means 56 is designed and set up, at least within a control range, for example, a positions of the doctor edge in at least one Mindeststellbereich between a parking position or a Abstelllage "AB" representing operating state BZ _A B and a Anstellposition or a an operating position "AZ" representing operating position BZ _A N; ΒΖΆΝ - for example, within at least one setting range of z. B. -0.2 to +0.2 mm, in particular in at least one adjustment range of -0.2 to 0.5 mm, a to allow continuous placement. In this case, a sequence of equidistant discrete steps should be understood as "continuous", which is conditioned, for example, by restriction or rounding down to the smallest steps to be considered and / or hand-handled in the variable to be considered.

This continuous placement is basically to be realized by a variety of embodiments of the drive device, for example via an electric motor caused pivoting movement or otherwise. In here z. B. illustrated, particularly preferred embodiment, the drive of the doctor blade 44 and / or the doctor carrier 54 - within at least the o. G. Minimum setting range - along a rectilinear movement by a linear drive 74 designed as a drive 74. For this purpose, the bearing means 53 is formed with corresponding bearing means 81, 82 for the linear points. This linear drive 74 can be realized in different ways to turn on and off the doctor blade 44 or blade edge along a rectilinear adjusting movement. In a preferred embodiment, a continuous and controlled, d. H. defined, is possible, is also the measure of parking and / or in particular Hiring, d. H. the positive or negative distance, along the linear adjusting movement and thus also the adjusting force, also referred to as doctor pressure, variable and / or adjustable.

The linear movement could in principle be formed by arbitrarily designed, linear movements causing drive means 74. However, the linear drive of the squeegee 44 or of the squeegee carrier 54 preferably takes place by an electric motor. This can be realized by an electric linear motor or, preferably, by a drive 74 designed as a spindle drive 74, which is or are preferably operated by an electric motor. In this case, the spindle drive 74 is preferably designed as a ball screw 74. The spindle gear and the spindle driving motor 56, in particular electric motor 56, can - as exemplified - be summarized in a spindle linear drive forming unit. The preferably designed as an electric motor 56 drive means 56 is of the

Control device 64 forth, in particular by the control means 66 implemented in this and implemented accordingly and / or programmed such that controlled by the - preferably designed as a spindle drive 74 - drive 74 continuously at least those operating conditions BZ; Z _AB ^' , BZ _A N; BZ'AN be approached, which represent the lying within the above setting range relative positions of the doctor blade 44 and doctor blade edge to the circular sieve 43.

The drive means 56 embodied as an electric motor 56 can be embodied as a position-adjustable or stepper motor or can form a control loop for reproducible positional input with an external position sensor. In a preferred embodiment, it is used as a servo drive 56, preferably with electronic position and / or speed and / or

Torque control, trained.

It can for the movement of the both sides mounted doctor blade 44 and the both sides mounted doctor blade carrier 43 and for the bearing means 53 provided on both sides a common drive means 56 with a two sides with respect to the

Actuation mechanically synchronizing coupling, z. B. a synchronous spindle or a crossmember, may be provided. In a preferred embodiment, medium or directly on the doctor blade 44 or on the doctor carrier 54 on both sides, d. H. in the region of both end faces of the screen printing stage 02 or the screen printing cylinder 04, such, the - preferably linear - locations of the relative position drives 74 and drive means 56 at. In the case of two drives 74 or drive means 56, these can preferably each independently of one another via z. B. the controller 64 be adjustable, z. B., however, if necessary, be synchronized with each other electronically.

By the - in particular remotely operable - actuator 74 for the doctor blade 44 and the blade carrier 54 can now on and off and the doctor blade pressing, ie the extent of going beyond the first touch stopping, and possibly the extent of the gap when parking without manual control effort to possibly new circumstances and / or even during operation to optimize the printing result to be changed. In an advantageous embodiment, two independently to be provided drives 74 and / or drive means 56 are provided. As a result, for example, the doctor pressure in the region of the two near-end doctor blade sections can be set differently from one another and / or a possibly off-centered, ie asymmetrical with respect to the doctor blade length

Arrangement of the round screen 43 to compensate.

The bearing device 53 and / or drive device 74 for the - preferably along the rectilinear at least in the adjustment range - on / off is executed and set up that the adjusting movement between the arrival and the Abstelllage "ON"; "AB" of the doctor 44th extends at least within said minimum range along the longitudinal extent of the doctor blade 52 extending in the unloaded contact state. This should possibly also be understood to mean only slight deviations in the direction, for example, of not more than 5 °, in particular not more than 3 °, which do not significantly affect the fundamental solution idea. Under the "longitudinal extent" of the doctor blade 52 is in this case in the unloaded state perpendicular to the axial

Direction, d. H. perpendicular to the printing unit width, as well as perpendicular to the doctor blade thickness, d. H. its thickness, extending rectilinear extension of the free, d. H. Not

clamped end portion of the doctor blade 52 between clamping and

Squeegee edge understood. In a - at least in the unloaded state - regularly planar formation of the doctor blade, the adjusting movement accordingly takes place along a lying in the doctor blade plane direction, which may be understood in the case of a significant thickness of the doctor blade as doctor blade plane, for example, parallel to the surface running average cutting plane of the doctor blade.

By turning on and off the doctor blade 44 in the above sense along the direction of the present between clamping and doctor blade longitudinal extent is a place of the doctor blade 44 and / or the doctor blade 52 for the purpose of turning on and off and / or to the variation of the measure when hiring and / or when parking possible, without forced thereby the squeegee angle α changes or a change would have to be compensated by placing other actuators.

Although the driving device 74 set forth so far for the on and off movement can basically serve only for activating and deactivating the doctor 44 in the context of the pressure-on and pressure-off or for maintenance or armament purposes.

In a particularly advantageous embodiment, however, the stated drive means 74 can be used for the arrival and Abstellbewegung together with controlling them

However, control means 66 to be executed, the squeegee 44 operatively - d. H.

during production operation - cyclically and synchronized with the machine and / or printing material phase position Φ _Μ , in particular directly or indirectly correlated to

Angular position of the impression cylinder 06, to relieve, in particular even slightly from the inner circumference of the round screen 43 to lift, and then turn it on again. In this way, it is possible to prevent the doctor blade 44, due to its contact force, from preventing the round sieve 43 from rolling over in the region of any sieve seam (for example in the case of fabrics) which may be present and / or when the forming and impression cylinder 04; 06 is deformed unduly during passage of the pit opening or collided with the grippers 46 or other impression cylinder parts and damaged. In this case, an above Einpräghilfe 49 shorten the pit opening during rolling at least and / or cover the gripper 46 and thus the earliest possible hiring the doctor 44 to the round screen 43 and in the direction of the impression cylinder 06, and thus a timely structure of the Farbwulstes and back pressure in front of the squeegee 44.

A purely control-technical, so not based on mechanical coupling synchronization of a cyclically repeating arrival and Abstellsequenz, for

Machine and / or printing material phase position Φ _Μ , wherein the arrival and Abstellsequenz z. B. is formed by a cycle having one or more each interrupted by a shut-off P B _A P _A N Anstellphasen respectively, may in principle

In a very different way to a rotational movement of a component involved in the printing material transport or to the control signals of a transport movement of the

Substrate B determining control device done. For example, the drive means 56 and / or the control means 64 controlling the drive means 56 or the relevant control means 66 are in signal connection to a machine and / or printing material phase position Φ _Μ and the control of the

Drive means 56 with respect to a length and / or location of an arrival and

Abstellsequenz as master serving phase position sensor 76, the z. B. as a one

Angular position delivering and also referred to as Leitachsgeber 76 sensor 76 or preferably as a machine phase position predetermining and therefore representing electronic master axis 76 is executed. The machine and / or

Printing material phase position Φ _Μ representing information is indicated in Fig. 4 by way of example with the machine and / or printing material phase position Φ _Μ symbolizing angle symbol.

In particular, in the case of the arc-processing and / or processing execution of the print-through, in particular screen printing stage 02 and / or in the case of the

Sheet transport with at least one o. G. Gripper device 32 running

Counterpressure cylinder 06, the doctor device 51 thus a the on and

Abstell movement of the doctor blade 44 between the Anstelllage "AN" and a storage position "AB" enabling storage facility 53 and a example in o. G. Mechanically trained drive means 74 with appropriately configured control means 66 comprise, by which the doctor blade 44 synchronized in operation to a machine or

Printing material phase position Φ _Μ to the z. B. as a round screen 43 trained screen printing 43 and on this is abgestellt. The drive device 74 in this case comprises a controllable drive means 56, by which the on and Abstellbewegung of the doctor blade 44 mechanically independent of the machine and / or printing material phase position Φ _Μ is feasible.

The drive device 74 is thus preferably by the drive means 56 without mechanically rigid coupling to a machine _element and / or printing material Φ _Μ representing machine element in at least one Anstelllage "AN" causing operating states BZ _A N or preferably in several the Anstelllage "ON" effecting Operating states BZ _A N; BZ ' _A N and in at least one the Abstelllage "AB" causing operating state BZ _A B can be brought (see, for example, Fig. 5).

In a particularly advantageous embodiment and / or preferred development o. Doctor device 51 may be formed by the control device 64 and connected to the drive means 56 control means 66 and formed

be set up, the squeegee 44 depending on the substrate format F.1; F.2 and / or the image concerned information l _B with varying phase lengths and / or positions on and off. In this case, by means of the control means 66 encompassed by the control device 66, a length and / or position and / or number of phases P _AN pertaining to the setting position "AN" are determined within a fixed and repetitive sequence with regard to their cycle length L _z, depending on the printing material format F. 1;. F.2 and / or the respective print image information l _B varied depending on rotation of the impression cylinder 06 can be passed through a corresponding number of cyclic length _{L, for} the case of a large multiple execution.

The substrate format F.1; F.2 and / or the printed image and processed information to be processed l _B the control means 66 z. B. over a

Signal connection are made available from a planning and / or control level 77 forth. This may be the case, for example, in the case of a substrate format F.1; F.2 and / or the printed image relevant information - via a signal connection from one of the planning and / or control level 77 attributable to the control center or via a signal connection for the transmission of Data from product planning or via a signal connection for the transmission of data from prepress.

In a first example of the design of the control means 66 and the control of the doctor blade movement, z. B. in Fig. 6 schematically based on a side view of a usable peripheral portion U _D comprehensive Zylindermantelabwicklung indicated, for example, in a first operating conditions printing material B sections of a first format F.1, ie with a first Bedruckstoffläge L _B i, and in a second

Operating situation printing material sections B of a second format F.2, ie with a second Bedruckstoffläge L _B2 printable or be printed. Depending on the respective printing material L _B i; L _B 2 or an information l _B representing this length is the phase length of the phase P _A N with doctor 44 engaged or, in this case, preferred, an end of the phase P _A N with doctor 44 engaged by

Control device 64 or the implemented control means 66 determines and / or takes place in dependence on the respective printing substrate L _B1 ; L _B2 or a length representing information l _B on and off the squeegee 34 in a respective cycle Z-ι; Z ₂ (see, eg, Fig. 5), in which the deviating Bedruckstofflägen L _B1 ; L _B2 deviating phase lengths for the respective phase P _A N with employed squeegee 44 or - for this case preferably - different phase positions for the end of the respective phase P _A N are employed with squeegee 44 employed or are. The phase position for the beginning of the respective phase P _AN with employed squeegee 44 can each have a same and z. B. fixed, but may be changed if necessary. This can, for example in the manner outlined above, lie before the beginning of the peripheral section U _{N which} can be used for printing.

In a second, possibly instead of or optionally for the first embodiment feasible or providable embodiment, for. B. in Fig. 7 schematically based on a side view of a usable peripheral portion U _D comprehensive cylinder jacket processing indicated, the phase length of the phase P _AN with employee squeegee 44 or at least one end of the phase P _A N with employed squeegee 44 by the control device 64 and the control means 66 in dependence on the respective print image length L _D or a length representing information l _B determined. Under the print image length L _D is z. B. in this case be understood that length, the flow side by the first and return side is limited by the last given by the round screen 43 printing plate to be provided inking. A hereby given intermediate pressure region 78 can have continuous or discontinuous pressure regions 44. It is done for operating situations with differing print image length L _D as a function of the respective print image length L _D or one of these length

representing information l _B on and off of the doctor 44 in a respective cycle Zi; Z ₂ , in which the differing print image lengths L _D

mutually different phase lengths for the respective phase P _A N are employed with squeegee 44 or deviating phase positions for the end of the respective phase P _A N are employed with squeegee 44 employed. The phase position for the beginning of the respective phase P _A N with employed squeegee 44 can in each case a respective same and z. B. fixed, but may be changed if necessary. This can, for example in the manner outlined above, lie before the beginning of the peripheral section U _{N which} can be used for printing. The phase position for the beginning of the respective phase P _AN with doctor 44 engaged can in this case be, as above, each one the same or one dependent on the print image beginning phase.

In a third, possibly instead of or optionally to the first and / or second embodiment feasible or providable embodiment, for. B. in Fig. 8 schematically based on a side view of a usable peripheral portion U _D comprehensive

Zylindermantelabwicklung indicated, for each cycle length L _z several phases PAN can be provided with an employed squeegee 44 and a plurality of phases P _AB with staff squeegee 44. In this case, a start and an end of the respective phases P _AN with an employed squeegee 44 by the control device 64 and the control means 66 in dependence on information l _{B is} determined, which is the considered in the transport direction phase position of non-printable strips represent discontinuous print strips 79 of a print area 78. For individual operating situations with a different pattern of strips to be printed and not to be printed, an individual, in

Dependent on the respective distribution of the print strips 79 or of a distribution representing this distribution l (M) a multiple on and off of the doctor blade 44 in a respective cycle, in which the different from each other in the distribution of the print strips 79 pressure ranges 78 from each other patterns for the phase positions and / or lengths, ie the position of the respective beginnings and ends, are assigned to the respective phase P _A N with the squeegee 44 engaged. The information relating to the printing pattern l _B to number and / or position of the print strip 79 is based, for example, on data obtained by evaluating the printed by the printing stage 02 and the printing plate 43 to be printed image, in particular by evaluation of z. B. are obtained in the prepress stage in data form target printed image or are. In this case, to be printed strip, which can be replaced by z. B. narrower not to be printed stripes are interrupted despite their discontinuity to larger

Strips be summarized or 79.

In particular, in connection with the first and the second embodiment is by the control device 64 and the included control means 66 within the preferably fixed cycle length L _z, a ratio between the on the length of the swept

Inner circumference of the screen printing stencil related phase length of the Anstelllage "AN" pertaining phase P _A N and the Abstelllage "AB" relevant phase P _A B variable.

Regardless of whether the control means 66 comprises a control circuit and / or control routine for the above-mentioned cyclic and synchronized locations, adjusting the amount of at least stopping, ie adjusting the force applied in the phase of the Anstelllage "AN", manually via an operator interface, for example, via an operator interface provided at the control station, and / or varied. In a preferred embodiment for the doctor device 51 and / or bearing device 53, this is both with a drive 71 and possibly corresponding storage means for varying and / or setting the doctor angle α and with a drive 74 and possibly corresponding storage means for turning on and off the squeegee 44 provided on the designed as a round screen 43 printing plate 43. Preferably, in this case, the bearing device 73 is designed such that when setting the doctor angle α by means of the drive means 71 provided for this purpose, the drive 74, in particular linear drive 74, which causes the squeegee 44 to come on and off is forcibly moved by the doctor 44.

In this case, drive 74 and, if appropriate, corresponding bearing means for switching on and off the squeegee 44 are arranged on the lever 69 pivotable about the pivot axis S1, in particular on the lever arm 68 carrying the squeegee carrier 54, wherein the drive 74 is effective between a lever-fixed point of attack and a rakelträgerfesten attack point is.

In a preferred embodiment, the rocket-proof point of attack is provided by a bearing means 81 configured as a rack carrier-fixed carriage 81, which bearing means 82 are configured in a guide means 82 which is designed as a lever-mounted guide 82, in particular a linear guide 82

is mounted linearly movable. In particular, the linear guide 82 is arranged on the lever 69 or lever arm 68 and oriented so that - in at least o. G. Minimum adjustment range - the resulting when moving the carriage o. G. Actuating movement of the doctor blade 44 along the running in the unloaded state of contact longitudinal extent of

Doctor blade 52 runs.

The lever 69 or lever arm 68 is in this case preferably one in o. G. Way stored with an approximately coincident with the doctor edge pivot axis S1.

The frame-fixed point of attack 73 for the squeegee angle change causing drive 71 can basically at the Siebdruckstufe 02 associated frame 83 and Frame part 83 may be provided, which forms, for example, the operatively fixed space printing frame 83.

Preferably, however, at least the screen-printing form 43 is mounted on a frame 61 of a screen-printing device 86 in a medium or direct rotatable manner. In this case, the screen printing form 43 can be changed by means of a drive device 88 which engages the frame 61 and can be actuated remotely and can be actuated at a distance from the axis to the impression cylinder 06. Preferably, the screen printing form 43 and the doctor blade 44 through the

Drive device 88 for Achsabstandsänderung between the impression cylinder 06 and the screen printing plate 43 jointly movable. For this purpose, they are preferably mounted directly or indirectly on the same one-piece or multi-part, generally movable frame 61. In particular, the frame 61 by the drive means 88 relative to a z. B. the impression cylinder 06 and possibly at least one transfer drum 33 supporting frame 83, z. B. o. G. space-fixed printing unit frame 83, movable frame 61 stored. The impression cylinder 06 and possibly at least one transfer drum 33 comprehensive lower part of the printing unit 06 is also referred to as Druckwerksunterbau 91 and can be used as a total in the engine room as einbringbares

Sub-module 91 may be formed.

The movable frame 61 forms together with the components arranged thereon z. B. the on and off screen printing device 86, which includes at least the screen printing form 43 carrying screen printing cylinder 04 and the engageable with the screen printing plate 43 and / or employee doctor 44 in addition to the frame 61.

In the case of a bearing device 53 mentioned above with bearing means 68; 69; 91 and a drive means 71 for varying the squeegee angle α are also included by the screen printing device 86. These are for example by the

Drive device 88 moved. In addition or instead, in the case of an abovementioned bearing device 53 with bearing means 81; 82 and a drive device 74 for switching on and off the squeegee 44 also includes this of the screen printing device 86 and, for example, moved along.

The drive means 87 effecting the axial distance change is more preferred

Execution executed and set up, in addition to one in a print-on-position L _{D of} the screen printing 43 on the impression cylinder 06 assumed operating state BZ _D and one different, a pressure-off position L _A with respect to the former L _D larger center distance a defined operating state BZ _A representing reproducibly between the counter-pressure cylinder 06 and the screen printing plate 43 and reproducibly assuming at least one further defined operating state BZR, which assumes a position L _R with respect to the first two layers L _A ; L _{D represents} greater center distance a. This further position L _R , z. As maintenance and / or set-up L _R , for example, for set-up or maintenance work, for example as a cleaning pad for cleaning the screen printing 43 and / or as a set-up for a printing form change in the case of z. B. formed as a flexible flat screen and up or unwound printing form 43 be taken or be. For the setup position L _R , the center distance is a z. At least at

50 mm, preferably even by at least 100 mm relative to that of the pressure-sensitive layer L _D enlarged.

In a first, z. B. with regard to the control of little complex advantageous embodiment, the drive means 88 included by the drive means 87 may be formed as a fluid-operated actuator 87. It can this as a

pressure-medium-operated cylinder-piston system 87, in particular as Mehrstellungs- cylinder-piston system 87 with the output side to be carried out a total of at least three defined piston positions. For example, it comprises altogether exactly or at least three different defined operating states BZ _D ; BZ _A ; BZ _R

representing switching states. In this case, for example, for the maintenance and / or set-up L _R a switching state with a pressing of two chambers in a same, the Stopping effecting direction, for the pressure-off position L _A a switching state with a pressing only one chamber in the stopping effecting direction and for the pressure-on-layer L _D a switching state with a pressing two chambers in a same, the hiring be provided effective direction. Preferably, the cylinder-piston system 87 is this double-acting at least with regard to the placement in pressure-on-position L _D , ie with a both in Abstellrichtung and in

Anstellrichtung bepressbaren Kolbenhubkammer formed. Preferably, both of z. B. two chambers designed so double-acting. Although basically also a hydraulic operation can be provided, the cylinder-piston system 87 is preferably operated pneumatically.

The operating state BZ _D assumed in pressure-on can - as far as the output-side state of the drive means 87 is concerned - be basically freely receivable and limited only by a maximum end position to be assumed. The operating state BZ _D actually assumed in pressure-on can be limited and / or varied, for example, by a positioning device 107 set out in greater detail below.

In an alternative embodiment, which is advantageous with regard to greater variability, the drive means 87 encompassed by the drive device 88 can be considered to be at least one of the two farthest apart of the two operating states BZ _R ; BZ _D given adjusting range continuously adjustable drive means 87 executed. In this case, the drive device 88 is designed, for example, as an electromotive linear drive 88 and / or as an electric motor driven spindle drive 88. The

Drive means 87 is then correspondingly by an electric motor, such as an electric linear motor or z. B. executed by an electric motor servo drive

Moving the screen printing form 43, in particular of this carrying

Screen printing cylinder 04 and the screen printing cylinder 04 bearing frame 61 can basically in any kind -. B. translational or rotary - realized by which a relative movement with at least one with respect to the

Counter-pressure cylinder axis radial movement component is effected or is effected. However, in this preferred embodiment, the drive device 88 and corresponding bearing means 89 are designed and arranged such that the screen printing plate 43 standing in contact with the unloaded contact comes out of this position

Actuation movement in about, d. H. with a maximum directional deviation of at most 15 °, preferably of at most 10 °, in the radial direction of the impression cylinder 06 runs. Although this movement can be carried out in a variant by a linear movement with appropriately designed bearing means. In a preferred here, by simple means and a large travel enabling

Execution is carried out for the pivoting movement about a counter-pressure cylinder 06 axis-parallel pivot axis S2. In this case, the frame 61 which carries the screen printing form 43 or the screen printing cylinder 04 is preferably mounted so as to be pivotable about the pivot axis S2 which is axially parallel to the impression cylinder 06. Corresponding bearing means 89 are then for example by a bolt 89, one on the frame width

continuous axis 89 or a stub axle 89 formed.

To fulfillment o. G. Condition at the present in the nip 03

Positioning direction and the possibility of a large travel a above maintenance and / or set-up position L _R is the pivot axis S2 advantageously in a plane E, which includes a Berührlinie L2, which is given in the Nippstelle by just touching in the unloaded state Druckform- and counter-pressure cylinder jacket surface, and at most by 10 ° inclined to the contact line L2 comprising tangent plane T of the undisturbed Gegenruckzylindermantelfläche runs. The distance is the

Pivot axis S2 to Rundsiebrotationsachse R43 preferably greater than the length of the outer radius r43 of the undisturbed screen printing form 43rd

A respective front-side frame wall of the movable, in particular pivotable frame 61 of the screen printing device 86 can by the z. B. shown in Fig. 4 Frame wall 59, z. B. the side part 59, itself or by a side part 59 comprehensive multi-part side wall 92 may be formed. For example, the bearing device 53 carrying side part 59 releasably on a frame wall 93, z. B. a stronger frame plate 93, the frame 61 and be included together with this of the multi-part side wall 92. The middle or directly the

Silkscreen 43 carrying frame 61 includes in addition to the one or more parts

Side walls 92 one or preferably a plurality of cross braces 94; 96; 97, which may be formed, for example, by one or more traverses 96 and / or by one or more shafts 94 (see below) and / or by one or more axial guides 97 (see below).

The frame 61 pivoting drive means 88 is effective between a respect. The screen printing device 86 fixed to the frame attack point 98 and a spatially fixed, for example. With respect to the printing unit frame 83, fixed point 99.

For example, the point of application 98 on the side of the screen printing device 86 by a coupling to a relative to the screen printing device 86 frame-fixed and

be given axially parallel to the screen printing die 43 extending axis of rotation. This can be realized by a rotatable coupling to a relative to the screen printing device 86 frame-fixed axis 94 or by a rotationally fixed coupling to a rotatably mounted on the frame 61 shaft 94. Preferably, a drive device 88 may be provided per end face, both of which on a extending from one to the other side shaft 94, z. B. synchronous shaft 94, attack. The

Coupling of the drive means 87 encompassed by the drive device 88 can be on the output side via one or more transmission and / or transmission mechanism 101, for example via a lever mechanism 101 (see, for example, FIG. 11), or else, except for any extension-side output elements provided take place directly (see, for example, FIG.

In a first embodiment of the drive device 88, this includes a through the drive means 87 operable lever mechanism 101, in particular toggle mechanism 101 having a first rocker 102 and a rotatably connected thereto second rocker 103, wherein the respective free ends of these rockers 102; 103 at the above attack points 98; 98 are fixed (see eg Fig. 12). The drive means 87 could in principle act on one of the rockers 102, 103, but acts in the case described here via a lever arm 104 on the rotatably connected to one of the rockers 102, 103 shaft 94. Depending on the operating condition BZ _D ; BZ _A ; BZ _{R of} the drive means 87, z. B. piston-cylinder system 87, which is by the rocker 102; 103 trained toggle more or less strongly angled, so that for the three correspondingly provided operating conditions BZ _D ; BZ _A ; BZ _R the three above-mentioned layers L _A ; L _D ; L _R for pressure-on, pressure-off and can be set up or waiting.

In a second, z. With regard to a less complex mechanism

advantageous embodiment of the drive device 88 is the drive means 88 on both sides - possibly via a driven side and / or a fixed-point extension - directly, ie without further movement mechanisms, to the points of application 98; 99 coupled. In this case, the three operating states present on the output side cause BZ _D ; BZ _A ; BZ _R again the three above-mentioned positions L _A ; L _D ; L _R.

In addition to the at least two, in particular the at least three layers L _A ; L _D ; L _R for the switching on and off of the screen printing plate 43 effecting drive device 88 is in an advantageous embodiment, a positioning 106 comprehensive

Positioning device 107 for remotely operated and / or remotely controlled adjustment and / or variation of the defined pressure-on position L _D provided. The positioning drive 106 may refer to the location of a storage of the screen printing cylinder 04 concerned radial bearing or the position of a member of the on and off relevant

Drive device 88 (see, for example, Fig. 12) act or on a stop element 108 of a of the positioning device 107 included, the adjusting movement in the desired pressure-on-position "L _D " limiting stop means 109 (see, for example, Fig. 12).

By the positioning means 107 and the positioning drive 106 is the

Axial distance a z. B. at least by at least 0.1 mm, preferably by at least 0.2 mm, possibly even by 0.3 mm and more, variable. As a result, adjustments to variable printing substrate thicknesses and optionally varying screen thicknesses and / or slightly varying outer diameters of the screen printing plate 43 are possible.

The pressure-on position "L _D " may be selected so that just just contact between the round screen 43 and counter-pressure cylinder 06 takes place, which is also referred to as a so-called. "Kissprint". Alternatively, however, an axial distance a can also be selected for the pressure-on-position "L _D ", so that in print-on-position "L _D " of the screen printing form 43 but offset doctor blade 43 is greater than zero between the circular sieve 43 and the impression cylinder 06 is present. The round sieve 43 in this case only touches the counterpressure cylinder 06 when the doctor 43 is in an engaged and pretensioned position due to slight deformation.

In the case of the first embodiment of the drive device 88 (see, for example, Fig. 11), the positioning drive 106 may, for example, change the length of one of the two rockers 102; 103 effect, for example, by itself as a rocker or part of the rocker 102; 103 acts and is variable in its longitudinal extent between frame-fixed and abtriebseitigem end.

In the case of the second embodiment of the drive device 88 (see, for example, FIG. 12), the positioning drive 106 can be designed as an actuator that performs a stop element 108. For example, the positioning drive 106 moves a wedge-like stop 108 of a wedge-shaped stop device 109, which cooperates with a second wedge-like stop 1 1. One of the two stop elements 108; 1 1 1 is now operational with respect to the frame 61 of the screen printing device 86 fixed to the frame and the other operationally fixed space, in particular with respect to

Printing frame 83 frame-fixed. To set the stopper 109 is one of the stop elements 108; 109 adjustable in the manner of the wedge drive relative to the other.

The positioning device 107 and the positioning drive 106 are preferably designed and set up, at least within an operational range

Minimum range, for example, a resulting variation of the

Center distance a by z. B. at least 0.2 mm, but at least equal to at least 0.1 mm, to allow continuous placement. This continuous placement is basically to be realized by a wide variety of configurations of the positioning drive 107, for example via a rack, which by a z. B. electric motor driven pinion is moved. In here exemplified and preferred embodiment of the positioning drive 106, however, is designed as a motor spindle drive 106, wherein the spindle gear comprising the spindle and the spindle driving motor, in particular electric motor, in a structural unit as

Spindle linear drive can be summarized.

In a particularly advantageous development of the screen printing stage 02 and / or the screen printing device 86, the screen printing plate 43 or the screen printing cylinder 43 carrying screen printing cylinder 04 and / or an end-side bearing device 1 12 of the screen printing plate 43 is axially movable relative to the impression cylinder 06.

Preferably, the two, the screen printing form 43 receiving the front side

Storage facilities 1 12 axially movable in the printing unit frame 83 or preferably in o. G. Frame 61 of the total relative to the impression cylinder radially relatively movable

Screen printing device 86 is arranged. The end-side storage facilities 1 12 are for this purpose, for example, in or on frontal support elements 1 13, z. B. side wall 1 13, recorded or arranged, which in turn are mounted on one or preferably on a plurality of axially extending cross struts 97, in particular axial guides 97. The two support elements 1 13 could be axially connected to each other and a training common movable rack. Preferably, however, the two support elements 1 13 are axially independent and movable separately. A movement can be done manually or via respective, not shown axial drives or be effected. In particular, in the case of manually moving and / or movable support members 1 13 means 1 14, z. B. clamping devices 1 14, be provided for locking the current position.

Thus, z. B. on a frame 83; 61, which by the printing unit frame 83 or preferably by a translational or rotary movable, in particular

swiveling part frame 61 may be formed, middle or immediate the

Screen printing cylinder 04 stored. It is z. B. on the frame 83; 61, which by the printing unit frame 83 itself or also preferably by the o. G. Subframe 61 may be formed, medium or directly arranged above the bearing 53 arranged. The latter can directly on the screen printing cylinder 04 medium or directly superimposed same frame 83; 61, z. B.an o. G. Frame plate 93, or indirectly via frame walls 59 on a screen printing cylinder 04 medium or directly overlapping frame part, z. B. to o. G. Frame plate 93, be arranged.

In a further development of the printing unit 02, in which the doctor blade 44 and / or the bearing means 53 carrying the doctor blade 44 directly or indirectly, on frame walls of a frame 61 directly or indirectly supported by the screen printing cylinder 04; 83 different subframe, z. B. on rack walls 59, is stored, this can the doctor blade 44 and / or the blade 44, the medium or directly bearing bearing device 53 supporting subframe relative to the screen printing cylinder 04 overlapping frame 61; 83 be movably mounted. In this case, in addition to the arrival and Abstellbewegung enabling storage, the doctor blade 44 medium or directly supporting bearing means 122; 123 is provided, via which the doctor blade 44 is mounted so relatively movable to the round screen 43 in the machine, so that the position of the contact line between blade edge and screen printing 43 in Rundsiebinnern in or opposite to the present in operation rotational direction is variable. The variability or mobility can z. B. in a tangential, one against the

Inner tangent inclined direction or in the circumferential direction, in particular along an Innentangente or an inner circumferential line section, but at least be given along a direction with at least one component of motion in the inner circumferential direction of the screen printing form.

For this purpose, the bearing device 53 is preferably together with the drive device 74 causing the on-and-off movement on an o. G. Rack wall 59 mounted, which, however, contrary to the above, not fixed, but in the manner of a movable

Bearing plate 59 relative to the screen printing cylinder 04 medium or directly overlapping frame wall 93 is mounted relatively movable.

In a first embodiment, the storage device 53 together with

Drive device 74-bearing frame wall 59 on the screen printing cylinder 04 medium or directly overlapping frame wall 93 along a rectilinear, preferably substantially horizontal, to be movable back and forth (see, for example, schematically Fig. 14). The substantially horizontal travel differs z. B. by a maximum of ± 5 ° from the horizontal. For the directed movement, a guide device 122, 123, which forces the frame wall 59 onto the actuating path, in particular one between the frame walls 59; 93 effective rolling or sliding bearing guide 122, 123 may be provided. This can, for example, by appropriate storage means 122; 123, z. B. as on one of the frame walls 59; 93 arranged rolling elements 122, for example, rollers 122, and on the other of the frame walls 93; 59 arranged guides 123 and treads 123 may be formed.

In a second embodiment, the storage device 53 together with

Drive device 74 carrying frame wall 59 on the screen printing cylinder 04 medium or directly overlapping frame wall 93 along a circular arc, in particular concentrically to the Siebdruckzylinderachse extending, Stellweges be movably mounted (see, for example, schematically in Fig. 15). As a result, when the contact line position is varied, neither a doctor angle nor an adjustment position need be corrected; the doctor orientation with respect to the adjustment to the screen printing form 43 is maintained. The bearing device 53, including the drive device 74 bearing frame wall 59 may be mounted on the screen printing cylinder 04 medium or directly overlapping frame wall 93 pivotally. This can be achieved by pivoting a lever bearing the bearing device 53 (as bearing means 122) about an axis mounted on the frame wall 93 (as a bearing means 123) or as above through a frame wall 59; 93 effective rolling or sliding bearing guide 122, 123 be realized. In contrast to the first embodiment, however, the rolling or sliding elements do not cooperate

straight, but with concentric with the Rundsiebachse extending surfaces together.

In a third embodiment, the storage device 53 together with

Drive device 74 carrying frame wall 59 on the screen printing cylinder 04 medium or directly overlapping frame wall 93 along a circular arc,

in particular concentric to the counter-pressure cylinder axis extending, be stored movable. In this case, the squeegee orientation with respect to the employment of the impression cylinder 06 is maintained, wherein the screen printing plate 43 is deformed in the region of its circumferential line.

The above-mentioned arcuate versions of the travel or the associated guides can also be approximately realized by his against the Innentangente the undisturbed circle at the place of first touch inclined rectilinear travel ranges or guides.

Regardless of the embodiment, a drive device 124 is preferably provided, through which the squeegee 44 or the squeegee holder 43 relative to the round screen 43, in particular, the bearing device 53 including the drive device 74 bearing

Frame wall 59 relative to the screen printing cylinder 04 medium or directly overlapping frame wall 93, is movable. The contact line varying drive means 124 may in principle be designed as a manually operated drive or alternatively as remotely operated by a drive means 126 to be set drive. In both cases, the drive can be done via a - for example, self-locking - worm gear.

Varying the Berührlinienlage is alone, but also in particular together with one or more of the above solution ideas, such. As the embodiments of the doctor angle adjustment and / or for rectilinear and / or independent on and off, advantage.

In a preferred embodiment of the screen printing stage 02 and / or the

Screen printing device 86 is the screen printing cylinder 04 rotationally by a from

rotational drive of the impression cylinder 06 mechanically independent;

in particular as a drive motor 1 16 executed drive means 1 16, for example, an electric motor 1 16, in particular an electric servo drive 1 16, ground. The drive takes place in this case for example via a continuous or connected via an axial offset compensating coupling connected shaft 1 17, z. B. toothed shaft 1 17, on which preferably in the region of both Siebdruckzylinderstirnseiten a preferably designed as a gear drive wheel 1 18 rotatably and axially movably received. From this medium or possibly directly via another, preferably designed as a gear 1 19 carried intermediate wheel on a rotatably connected to the rotatable part of the bearing device 1 12, preferably in the manner of a gear 121 or gear rim 121 running drive wheel 121 driven off.

Particularly advantageous is the execution of the screen printing stage 02 with a screen printing cylinder 04 mechanically independent of the rotary drive of the Impression cylinder 06 driving drive means 1 16 and one on and off the squeegee 44 causing drive means 74 with one of the rotary drive of the screen printing and the impression cylinder 04; 06 mechanically independent drive means 56 in connection with a machine with at least one further, operating according to another printing process printing stages 09; 09 ', in particular at least additionally one of the printed image in direct printing on the substrate B transmitting and / or working in gravure or high-pressure or a digital printing method

Printing stage 09; 09 'in the printing material path. The screen printing stage 02 and the others

Printing stage 09; 09 'can be processing levels of an online finishing of upstream, for example, by one or more operating according to an offset printing stages 07 or in an advantageous in terms of effectiveness execution as processing stages of a multi-stage processing, in particular finishing machine 01 for offline processing or -refining be formed by previously printed in the offset printing substrate sheet B.

As printing stage 09 operating according to a high-pressure method, instead of or in addition to a printing stage 09 operating according to flexographic printing, a printing stage 09 operating according to a tampon direct printing method and / or a direct printing stamp method can be provided in the printing material path. Instead of or in addition to an operating in gravure or high-pressure or a digital printing process printing stage 09; 09 'can be used as another, according to a direct digital method printing stage 09 instead of or in addition to one after the inkjet or

Inkjet method operating printing stage a working according to a thermal transfer direct printing process printing stage 09 'be provided.

The said direct printing method has in common that they allow the use of specific printing fluid and / or by the type of application, a particularly effective and / or individual processing, in particular finishing, of already printed in sheet form in offset printing substrate B. The achievable Effects relate to, for example, special gloss effects, particularly high resistance and / or a feel different from offset printing. This makes possible a particularly high-quality and effective design of the product surface.

Due to the independent of the impression cylinder 06 rotary drive and the mechanically independent doctor drive the screen printing stage 02 can be actively co-operated independently of the sheet transport, are in standby mode or be completely disabled.

The counter-pressure cylinder 06 of the screen printing stage 02 can in a preferred embodiment by a sheet transport causing, from the drive of the screen printing cylinder 04 mechanically independent drive means 127, z. A drive motor 127 (see, for example, schematically indicated in Fig. 1 and Fig. 2). In particular, the drive of the impression cylinder 06 of the screen printing stage 02 by the drive motor 127 in a driven by the drive motor 127 drive train, in particular in a

Gear train, together with at least one adjacent in the printing material cylinder 33, in particular a transfer drum 33. The drive coupling between

Impression cylinder 06 and transfer drum 33, for example via intermeshing gears 128; 129 (see eg Fig. 13 and Fig. 9). In a preferred embodiment, the drive of the impression cylinder 06 of the screen printing stage 02 is not only carried out together with at least one transfer drum 33, but together with this and with the substrate B by the pressure point with the

Processing tool 29 promotional cylinder 24, z. B. Transfer cylinder 24 of the other provided in the printing material, the further processing or processing serving pressure 09; 09 '. This is z. B. at least from the gear 128 of the

Impression cylinder 06 of the screen printing stage 02 to a gear, not shown, of the transfer cylinder 24 of the further printing stage 09; 09 'a gear train of meshing, preferably helical gears running 128; 129 trained. By the screen printing stage 02 - as stated above - is suitable, printing material sheet B of different format length without color residue on the cylinders 04; 06 are to be printed, in particular as Weiterverarbeitungs- or in particular

Finishing machine Engineered 01 especially for high quality

Finishes suitable.

Due to the independent rotary drive of the screen printing cylinder 04, depending on the nature and extent of finishing a further processing using screen printing or further processing without screen printing, z. B. only by in high pressure

to be applied lacquer and / or by - preferably individualizing or

changing - impressions in digital printing in a simple way without complex mechanics or conversions possible. In the case of trained as a low-pressure or high-pressure 09 further printing stage 09 can also be the imaging cylinder 29, z. B. forme cylinder 29, be driven by a further drive motor mechanically independent of the transfer cylinder 24 of the respective printing stage 09 or by the transfer cylinder 24 driving drive train. In this case, a screen printing is then possible regardless of the activation of the further printing stage 09. In the case of the particular direct digital printing, z. As inkjet or inkjet printing, its independence is given in any case.

In the embodiment as a pure finishing or finishing machine 01 is the Bedruckstufen 02; 09; 09 'preferably a above, the substrate surface cleaning conditioner 08 provided z. B. is designed as a cleaning stage 08 and / or comprises a suction agent and / or a blowing agent and / or a mechanical stripping. The conditioning stage 08 differs in particular from the printing stages 02; 09; 09 'in that it does not carry pressurized fluid and / or without a pressurized fluid reservoir or pressurized fluid supply device. LIST OF REFERENCE NUMBERS

01 machine, finishing machine, finishing machine

02 processing stage, printing stage, printing unit, rotary printing unit,

Screen printing unit, screen printing varnishing unit

03 pressure point

04 printing cylinder, forme cylinder, screen printing cylinder, processing tool 05

06 printing cylinder, impression cylinder, conveyor, rotating body,

Cylinder, drum

07 processing level, printing stage, printing unit, offset printing stage, offset printing unit

08 Processing stage, conditioning stage, cleaning stage

09 processing stage, printing stage, printing unit, coating unit, flexographic printing stage,

Flexod return, flexo coating unit

09 'processing stage, printing stage, printing unit, inkjet printing stage

10

1 1 processing stage, conditioning stage

12 Opening, inspection and / or maintenance hatch

13 Substrate feeding device, substrate, feeder

14 Substrate delivery device, delivery, product delivery

15

16 Transport route, delivery extension

17 processing stage, conditioning stage, radiation dryer, dryer, UV dryer

18 Apparatus for quality control

19 plant, sheetfed, alignment device

20

21 conveyor line

22 arc accelerator, swing gripper

23 conveyor, transfer drum, feed drum Conveyor, rotating body, cylinder, transfer cylinder, drum conveyor, rotating body, cylinder, drum

Machining tool, Cylinder, Printing cylinder, Form cylinder Machining tool, Cleaning tool, Calender roller holding means, Holding device, Gripper system

Conveyor, rotating body, cylinder, transfer drum

Holding means, holding device, gripper system conveying means, rotating body, cylinder, drum

Machining tool, radiation source, IR radiation source conveyor system, chain conveyor system

Traction means, chain drive and / or guide wheel

Pressure fluid applicator, inking unit

Printing form, round screen, screen printing form

Squeegee gripper

Recess, pit

Cylinder barrel section, saddle, saddle

Dyeing aid, flap squeegee device

squeegee blade Storage facility

Doctor carrier, traverse drive means, electric motor, servomotor

Drive means, motor, electric motor, servomotor

A doctor beam

Side part, frame wall, bearing plate frame, subframe

signal connection

Control device control means

control means

Bearing means, lever arm

Lever drive device, drive, motor spindle drive

Point of attack, fulcrum

Drive unit, drive, spindle drive, ball screw Phase position sensor, master axis encoder, sensors, master axis

Planning and / or management level

pressure range

Pressure strip bearing means, slide Bearing means, guide, linear guide

Frame, frame part, printing unit frame

Rack wall screen printing device

Drive means, fluid-operated actuator, cylinder-piston system drive means

Bearing means, bolt, axle, axle stub Bearing means, bolt, axle stub

Sidewall (61)

Frame wall, frame plate

Cross brace, axle, shaft, synchronous shaft cross brace, traverse

Cross brace, axial guide

attack Punk

- Transmission and / or transmission link

wing

lever arm

- Positioning drive, spindle drive

positioning device

Stop element, stop

stop device

- 1 1 1 stop element, stop

1 12 storage facility

1 13 Supporting element, side wall

1 14 Locking means, clamping device

1 15 -

1 16 Drive, drive motor, electric motor, servo drive

1 17 shaft, gear shaft

1 18 Drive wheel, gear

1 19 Intermediate gear

120 -

121 Drive gear, gear, ring gear

122 bearing means, roll

123 bearing means, guide, tread

124 drive device

125 -

126 drive means

127 drive means, drive motor

128 gear

129 gear a center distance

a _s distance

a _A B distance

a _A N distance

a ' _A N distance

"AB" storage position (44, 52)

"ON" Anstelllage (44, 52)

B Substrate, substrate, substrate sheet

B 'Substrate, substrate, substrate sheet, processed Operating state (44, 52)

Operating state (44, 52)

E level

F pressure fluid (paint or varnish)

F.1 substrate format, format, first

F.2 substrate format, format, second

9 straight ("inner tangent")

information

L1 contact line (43, 44)

L2 touch line (06, 43)

L _A position, pressure-off position (04; 43)

L _D position, pressure-on-position (04; 43)

L _R position, maintenance and / or set-up position, cleaning position (04, 43)

L _z cycle length

L _B i printing substrate

L _B 2 printing substrate

P touch point

PAN phase, starting phase

PAB phase, shutdown phase

R43 rotary sirloin axis

51 pivot axis

52 pivot axis

T tangent plane

U _D circumferential section (usable for pressure)

U _N circumferential section (disturbed or not usable for pressure)

cycle

Z ₂ cycle α angle, doctor angle

Φ _Μ Machine and / or printing material phase position

Claims

claims

1 . Printing unit (02) of a printing material (B) on at least one printing point (03) by a screen printing process printing machine with a screen cylinder (04) formed as a form cylinder (04), with a

Screen printing cylinder (04) an abutment-forming impression cylinder (06) and with a doctor device (51) comprising

a screen printing plate (43) designed as a round screen (43),

a squeegee (44) which is set in a set position ("ON") with a doctor edge against the screen-printing form (43) and / or can be set against the screen-printing form (43),

a bearing device (53) enabling an on-and-off movement between the setting position ("ON") of the squeegee (44) and a setting position ("AB"), a drive device (74) through which the squeegee (44) in its relative position relative to the screen printing form (43) in at least one Anstelllage (AN) and at least one Abstelllage (AB) can be brought,

one of the drive means (74) comprises drive means (56) through which the arrival and Abstell movement of the doctor blade (44) mechanically independent of a rotary drive of the screen printing form (43) and of a substrate (B) conveying means (06) is feasible,

characterized in that the drive means (56) effecting the on and off movement of the doctor blade (44) is controlled via a drive means (56)

Control device (64) reproducibly in at least one a Abstelllage ("AB") causing operating state (BZ _A B) and at least two other mutually different defined operating states (BZ; BZ _A N; BZ ' _A N) can be brought, the receipt of each one Anstelllage ("ON", "ON"') with mutually different radial relative positions and / or adjusting forces between doctor blade (43) and

Screen printing form (43) result. Printing unit according to Claim 1, characterized in that the control device (64) which controls the drive means (56) of the drive device (74) and switches off the squeegee (44) is in signal connection to a machine and / or printing material phase position (Φ _Μ ) Providing information

Phase position sensor (76) is and / or the doctor blade (44) by the drive means (74) correlated to a machine or printing material phase position (Φ _Μ ) in the

Anstelllage (AN) and Abstelllage (AB) can be brought.

Printing unit according to claim 1 or 2, characterized in that the doctor blade (44) overlapping bearing means (53) is adapted to the stroke of arrival and Abstellens and the Anstelllage related end position on the control of the drive means (56) or a drive to vary an adjustable sling.

Printing unit according to claim 1, 2 or 3, characterized by the design of the bearing device (53) and the arrangement of the doctor blade (44) on the same, so that the doctor blade (44) to form an acute, in particular on the opposite direction of rotation, squeegee angle (A) against the screen printing form (43) in a Anstelllage ("ON") can be adjusted.

Printing unit according to claim 1, 2, 3 or 4, characterized in that the

Bearing device (53) bearing means (81, 82), by which at least within a anstelllage ("ON") and a storage position ("AB") comprehensive positioning a guided positions of the doctor blade (44) in a straight line and / or along a in a Squeegee plane lying direction.

Printing unit according to claim 1, 2, 3, 4 or 5, characterized in that the bearing device (53) bearing means (81, 82), by which the positions of the doctor blade (44) along a direction of the unloaded contact state, ie in the state the first contact of the screen printing plate (43) without additionally impressed doctor blade pressing, present and perpendicular to the doctor blade edge Longitudinal extension of one of the doctor blade (44) covered doctor blade (52) is rectilinear.

Printing unit according to Claim 5 or 6, characterized in that the bearing means (81, 82) comprise a linear guide (82) and a slide (81) guided in or on the linear guide (82), which guide means directly or indirectly and squeegee to be dropped (44) is connected

Printing unit according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that by the drive means (56) within a setting range, which places the doctor blade edge in at least a minimum adjustment range between a

Abstelllage "AB" representing operating state (BZ _A B) and one of them spaced Anstelllage "AN" representing operating state (BZ _A N; BZ ' _A N) corresponds, a continuous placement on intermediate states can be effected.

9. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7 or 8, characterized in that the drive device (74) as a linear drive (74) and / or as a spindle drive (74) and / or as a ball screw (74 ) is executed.

10. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that the drive means (56) by an electric motor (56) is formed.

1 1. Printing unit according to claim 10, characterized in that the electric motor (56) is designed as a position-adjustable electric motor (56) or as a stepping motor or as a servo drive (56) or forms with an external position sensor a control loop for reproducible position assumption.

12. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 1 1, characterized

in that the drive device (74) and / or the drive means (56) is designed to be controllable with regard to a position to be adopted.

13. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that the drive means (56) is formed by a pressurizable medium cylinder-piston system.

14. Printing unit according to claim 10 or 13, characterized in that the

Drive device (74), in particular remotely operated and / or in one of the at least three operating states (BZ; BZ _A B; BZ _A N; BZ ' _A N) comprehensive range continuously adjustable stop means comprises, against which

Drive means (56) for taking the respective operating state (BZ, BZ _A B, BZ _AN , BZ ' _ON ) works.

15. Printing unit according to claim printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that the drive means (74) and / or the

Drive means (56) is controllable with respect to a force acting on the output side.

16. Printing unit according to claim 15, characterized in that the drive means (56) can be acted upon by a pressure medium can be acted upon pressure cylinder-piston system or by a voltage with respect to the output side applied torque down electric motor.

17. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15 or 16, characterized in that in the region of both end faces a doctor blade ( 44) medium or directly superimposed storage facility (53) with the arrival and

Abstell movement between the Anstelllage ("ON") of the doctor blade (44) and a

Abstelllage ("AB") enabling storage means (81, 82) and with a the

Drive means (56) having and acting on the doctor carrier (54)

Drive device (74) is provided.

18. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 16 or 17, characterized in that the bearing device (53) has a squeegee (44) or a squeegee (44) n carrying doctor support (43) supporting the bearing means (68) which about a blade edge parallel to the pivot axis (S1) pivotally mounted on a frame (61) is arranged and when pivoting a change between a doctor blade (52) of the doctor blade (44) and the

Screen printing form (43) formed doctor angle (a) bewirk.

19. Printing unit according to claim 18, characterized in that the bearing device (53) has the doctor blade (44) or a squeegee (44) carrying doctor carrier (43) bilaterally supporting bearing means (68) which about a parallel to the squeegee edge pivot axis ( S1) are arranged pivotably on a frame (61) and, when pivoting, effect a change in a doctor blade angle (a) formed between a doctor blade (52) of the doctor blade (44) and the screen printing plate (43).

20. Printing unit according to claim 18 or 19, characterized in that the

Pivoting axis (S1) of the bearing means (68) coincides with a theoretical contact line (L1), which by a in the unloaded state of contact of the doctor blade (44), i. H. in the state of first contact of the screen printing plate (43) is given by the doctor blade edge without additional impressed doctor blade pressing, extending line.

21. Printing unit according to claim 18, 19 or 20, characterized in that the arrival and Abstell movement of the doctor blade (44) causing drive means (74) together with drive means (56) arranged on the pivotable bearing means (68) and thereby together with the doctor (44 ) is pivotally mounted so that it is forcibly moved when setting the doctor angle (a) with the doctor blade (44).

22. Printing unit according to claim 18, 19, 20 or 21, characterized in that as the doctor blade (44) medium or directly supporting and pivotable bearing means (68) is provided a lever arm (68) of a one- or multi-arm lever (69) ,

23. Printing unit according to claim 18, 19, 20, 21 or 22, characterized in that a drive means (71) comprising a drive means (57) is provided, by which the doctor blade (44) is pivotable about the pivot axis (S1).

24. Printing unit according to claim 23, characterized in that the

Drive device (71) is designed as a linear drive (71) and / or as a spindle drive (71).

25. Printing unit according to claim 23 or 24, characterized in that the

Drive means (57) by an electric motor (57) is formed.

26. Printing unit according to claim 25, characterized in that the electric motor (57) is designed as a position-adjustable electric motor (57) or as a stepper motor or as a servo drive (57) or forms an external position sensor with a control loop for reproducible position assumption.

27. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 or 26, characterized in that the arrival and Abstell movement causing drive means (56) to a signal connection

Control means (66) of a control device (64), which are designed and _adapted to cause during operation of the printing press on and off the doctor blade (44) correlated to a machine or printing material phase position (Φ _Μ ) and / or that the squeegee (44) putting drive means (56) with a doctor blade (44) synchronized to a machine and / or printing material phase position (Φ _Μ ) and / or with a squeegee (44) depending on the substrate format variable sequence and off Control means (66) of a

Control device (64) is in signal connection.

28. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26 or 27, characterized in that the arrival and Abstellbewegung causing drive means (56) has a signal connection to control means (66) of a control device (64) which executed and to set up during operation of the printing press for mutually different printing material formats and / or print image lengths on and off the squeegee (44) with mutually different sequence profile and / or that the arrival and Abstellbewegung causing drive means (56) with a the Squeegee (44) depending on the printing material format variable sequence course on and off control means (66) of a control device (64) in

Signal connection is.

29. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 or 28, characterized in that the screen printing form (43) is rotatably mounted on a frame (61) and by a on the frame (61) engaging the drive means (88) in the center distance to

Counter-pressure cylinder (06) is variable and / or that the storage device (53) is arranged directly on a medium or directly supporting the screen printing form (43) frame (61).

30. Printing unit according to claim 29, characterized in that the

Screen-printing form (43) carrying frame (61) about a counter-pressure cylinder (06) axially parallel pivot axis (S2) is pivotally mounted.

31. Printing unit according to claim 30, characterized in that the

Distance change by pivoting of the frame (61) about the pivot axis (S2) causing drive means (88) optionally in an operating state (BZ _D ) can be brought, in which the screen printing form (43) in a defined pressure on-position (L _D ) is located, and in another operating state (BZ _A ) can be brought, in which the screen printing form (43) is in a defined pressure-off position (L _A ).

32. Printing unit according to claim 31, characterized in that the

Drive device (88) reproducible defined in a further Operating state (BZ _R ) can be brought, in which the frame (61) is pivoted so that the screen printing form (43) in a maintenance and / or set-up (L _R ) with respect to the pressure-on position (L _D ) and the pressure-off position (L _A ) greater center distance (a) between the impression cylinder (06) and the screen form (43) is located.

33. Printing unit according to claim 29, 30, 31 or 32, characterized in that one of the drive means (88) comprises drive means (87) with three

different, the three different operating states representing defined switching states formed or as at least within the given by the two most distant of said operating conditions (BZ _R ; BZ _D ) given Stellstellbereichs continuously adjustable drive means (87) is executed.

34. Printing unit (02) according to claim 33, characterized in that the drive means (88) comprised drive means (87) is designed as a fluid-operated actuator (87).

35. Printing unit (02) according to claim 33 or 34, characterized in that the drive device (88) comprises drive means (87) as a

pressure-medium-operated cylinder-piston system and / or at least with regard to the transfer in pressure-on-position (L _D ) is double-acting and / or as a multi-position cylinder-piston system (87) defined with at least three

Positions and / or is designed as a pneumatic cylinder.

36. Printing unit (02) according to claim 33 or 34, characterized in that the

Drive device (88) is designed as an electromotive linear drive and / or as a motor driven spindle drive (88).

37. Printing unit (02) according to claim 33, 34, 35 or 36, characterized in that a positioning drive (106) comprehensive positioning means (107) for Setting and / or for varying the pressure-on-position (L _D ) is provided.

38. Printing unit (02) according to claim 31, 32, 33, 34, 35, 36 or 37, characterized

in that the pivot axis (S2) lies in a plane (E) which comprises the contact line (L2) of the screen printing form and impression cylinder jacket surface which just touches without load and which is inclined at most by 10 ° to the tangential plane of the undisturbed layer comprising the contact line

Counter-pressure cylinder jacket surface extends and / or that the distance of the

Pivot axis (S2) to Rundsiebrotationsachse (R43) is preferably greater than the length of the outer radius (r43) of the undisturbed screen printing form (43) and / or that the distance between the pivot axis (S2) to a point (98) of the drive device (88) larger is than to the round soot axis (R43).

39. Printing unit (02) according to claim 31, 32, 33, 34, 35, 36, 37 or 38, characterized

in that the screen-printing form (43) and the doctor blade (44) are mounted directly or indirectly on the same frame (61) and / or are jointly movable by the drive device (88) when the axial deflection change between the impression cylinder (06) and the screen printing form (43) are.

40. Printing unit (02) according to claim 31, 32, 33, 34, 35, 36, 37, 38 or 39, characterized in that the screen printing form (43) medium or directly carrying pivotable frame (61) relatively movable to the impression cylinder (43). 06) is mounted on a space-fixed and / or the impression cylinder bearing printing unit frame (83).

41. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 or 40, characterized in that the doctor blade (44) on a doctor carrier (54) is and for carrying out the adjusting movement of the doctor carrier (54) by the drive means (74) is adjustable

42. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 or 41, characterized in that on the doctor blade (44) or at a squeegee carrier (43) carrying the doctor blade (44) in the region of both end faces of the doctor blade carrier (43)

Screen printing cylinder (04) engages a drive device (74), wherein for each of the two sides of a drive means (56) or a common drive means (56) is provided with a two sides with respect to the adjusting movement mechanically synchronizing coupling.

43. Printing unit according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41 or 42, characterized in that on the circumference of the impression cylinder (06 ) One or more mutually offset in the circumferential direction

Holding means (32) are provided, through which the printing material sheet (B) on the input side of the upstream conveying means can be received and output side to the subsequent conveying means can be delivered.

44. Method for operating a squeegee device (51) in a printing unit of a sheet-like printing material (B) according to a screen printing method

printing machine, wherein a switching on and off of a doctor blade (44) to one of a screen printing cylinder (04) supported screen printing form (43) via a drive means (74) by a specially provided, mechanically by the rotary drive Siebdruckzyklinders (04) and a Independent drive means (56) take place with this cooperating counterpressure cylinder (06), characterized in that, for adjusting the squeegee (44), the drive means (56) effecting the activation and deactivation movement of the squeegee (44) via a drive means (56). controlling control device (64) from a storage position ("AB") in a variable with respect to the strength of Anstellens Anstelllage ("ON") is spent.

45. The method according to claim 44, characterized in that the variation of the intensity of the setting takes place via a variation of the setting position ("ON") concerning the end position, by a control of the drive means (56) even with regard to a position to be adopted or by a Position of the adjusting movement limiting stop means is varied.

46. The method according to claim 44, characterized in that the variation of the thickness of the setting takes place via a defined variation of a force acting on the drive side (56) on the drive side in the setting direction.

47. The method according to claim 44, 45 or 46, characterized in that the

Setting the squeegee (44) the drive means (56) effecting the on and off movement of the squeegee (44) via a drive means (56) controlling

Control device (64) from a Abstelllage ("AB") representing operating state (BZ _A B) in a specific of several reproducible to be produced operating states (BZ _A N; BZ ' _A N) is spent, the receipt of different Anstelllagen ("ON") with mutually different radial relative positions and / or Anstellkräften between doctor blade (43) and screen printing form (43) result.

48. The method according to claim 47, characterized in that the specific, the associated Anstelllage ("ON") conditional operating state (BZ _A N; BZ ' _an ) in the control device (64) as relevant to the Anstelllage operating state (BZ _AN , BZ ' _ON ).

49. The method according to claim 48, characterized in that a determination

and / or changing the operating state relevant for the setting position (BZ _AN , BZ ' _AN ) via an operator interface and / or by results of a Evaluation of originating from an inspection system data is effected.

50. The method of claim 44, 45, 46, 47, 48 or 49, characterized in that the on and off within at least one operatively provided for the Ab- and Anstellbewegung adjustment range along a linear travel and / or along a direction in the longitudinal direction one of the doctor blade (44) covered doctor blade (52) and / or by a linear drive (57) formed as drive means (57).

51. The method of claim 44, 45, 46, 47, 48, 49 or 50, characterized in that the squeegee (44) during the production operation cyclically and synchronized to a machine and / or printing material phase position (Φ _Μ ) by producing the relevant for the and / or fixed Anstelllage relevant operating condition (BZ _A N; ΒΖΆΝ) to the screen printing form (43) employed and turned off by producing a Abstelllage ("AB") representing operating state (BZ _A B).

52. The method of claim 44, 45, 46, 47, 48, 49, 50 or 51, characterized

characterized in that phase lengths and / or positions of in a

Repeated cycle (Z) present arrival and Abstellphasen (P _A N; PAB) depending on the substrate format and / or the printed image information (l _B ) are varied.

53. The method of claim 44, 45, 46, 47, 48, 49, 50, 51 or 52, characterized

in that a doctor angle (α) is varied by pivoting the doctor blade (4) about a pivot axis (S1) coinciding with the contact line (L1).