EP2042315B1 - Printing unit and printing press - Google Patents

Printing unit and printing press Download PDF

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Publication number
EP2042315B1
EP2042315B1 EP08105299A EP08105299A EP2042315B1 EP 2042315 B1 EP2042315 B1 EP 2042315B1 EP 08105299 A EP08105299 A EP 08105299A EP 08105299 A EP08105299 A EP 08105299A EP 2042315 B1 EP2042315 B1 EP 2042315B1
Authority
EP
European Patent Office
Prior art keywords
printing
cylinder
printing unit
impression cylinder
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08105299A
Other languages
German (de)
French (fr)
Other versions
EP2042315A3 (en
EP2042315A2 (en
Inventor
Dieter Bangel
Thomas Demand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gallus Druckmaschinen GmbH
Original Assignee
Gallus Druckmaschinen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gallus Druckmaschinen GmbH filed Critical Gallus Druckmaschinen GmbH
Publication of EP2042315A2 publication Critical patent/EP2042315A2/en
Publication of EP2042315A3 publication Critical patent/EP2042315A3/en
Application granted granted Critical
Publication of EP2042315B1 publication Critical patent/EP2042315B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/44Arrangements to accommodate interchangeable cylinders of different sizes to enable machine to print on areas of different sizes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F11/00Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/24Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34Cylinder lifting or adjusting devices
    • B41F13/36Cams, eccentrics, wedges, or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F23/00Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403Drying webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F5/00Rotary letterpress machines
    • B41F5/24Rotary letterpress machines for flexographic printing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41PINDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00Printing machines of special types or for particular purposes
    • B41P2217/10Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/11Machines with modular units, i.e. with units exchangeable as a whole

Definitions

  • the invention relates to a printing unit with a printing form cylinder, an impression cylinder and an inking roller, in which a recorded on the printing form cylinder printing plate in contact with the inking roller is adjustable, wherein the printing form cylinder and the impression cylinder form a printing nip, in which a substrate is printable. Furthermore, the invention relates to a printing press with such a printing unit.
  • Printing presses that are designed or used for label printing or packaging printing are becoming increasingly demanding in terms of cost-effectiveness and ease-of-use while at the same time maximizing variability for product production.
  • the printing machine should cause as little paper waste as possible, for example when converting between different print jobs, and also between different printing methods or print lengths.
  • Common narrow-web presses designed for label printing, in particular for self-adhesive label printing usually have a machine construction in which a printing material or a substrate is passed between different process levels (for example for printing and for drying) via a large number of cylinders and rollers. so that a not insignificantly long web section is stored in the printing press and potentially corresponding waste can occur.
  • a convertible between different printing process label printing machine is in the document WO 2005/028202 A1 described.
  • a printing press configuration is required for another machine structure, which on the one hand enables the desired variability with regard to printing methods and printing lengths and, on the other hand, a short web path.
  • cylinders are pivotally received.
  • DE 44 35 986 A1 is an offset printing unit with a corresponding on and off device for the Blanket cylinder disclosed.
  • an adjustment of the optimum pressure and an adaptation to the substrate thickness can be achieved.
  • a variable-length printing unit for offset printing is in the document EP 1 101 611 A1 described.
  • Bearing arms are pivoted about an axis by means of spindle drives in order to move the axes of rotation of the printing forme cylinder, the blanket cylinder and the impression cylinder apart from one another or to each other.
  • Printing cylinder and blanket cylinder different format can be used in the printing unit.
  • the post-published publication EP 2006 099 A2 discloses a label printing machine having a plurality of printing units, each printing unit having a cylinder and an impression cylinder forming a printing nip.
  • the rotational axis of the cylinder is thereby ver ⁇ verkabbar by a linear movement of a receiving element relative to the axis of rotation of the impression cylinder, so that a diagonal register adjustment can be realized.
  • Object of the present invention is to provide a printing unit in a compact design, in which the printing forme cylinder of the cylinders contacting him for the purpose of format variation is turned off.
  • An inventive printing unit comprises a printing form cylinder, an impression cylinder and an inking roller.
  • a printing form recorded on the printing form cylinder can be set in contact with the inking roller, wherein the printing form cylinder and the impression cylinder form a printing gap in which a substrate can be printed.
  • the printing form cylinder is pivotable about a parallel to the axis of rotation of the impression cylinder pivot axis about the impression cylinder and the distance of Printing form cylinder and the impression cylinder variable.
  • the pivot axis may in particular lie within the contour of the impression cylinder.
  • the impression cylinder can at least partially lie in a circle segment bounded by a line swept by the axis of rotation of the printing forme cylinder.
  • the printing form cylinder is pivotable about the impression cylinder and not pivoted away from it.
  • the pivot axis may, viewed from the axis of rotation of the printing forme cylinder, lie within the plate cylinder or behind the plate cylinder.
  • the distance variation of the axes of rotation may be along a linear or straight path.
  • the counter-pressure cylinder and / or the inking roller can be accommodated with a frame-mounted or with a position-variable rotation axis.
  • a printing forme cylinder receiving element is pivotable, wherein the distance of the receptacle of the printing forme cylinder is adjustable to the pivot axis.
  • the printing unit according to the invention can be designed for the execution of a flexographic printing process or for the execution of a letterpress printing process or for the execution of a gravure printing process.
  • the pivot axis of the printing form cylinder runs along the cylinder center axis of the impression cylinder or coincides with the cylinder center axis of the impression cylinder.
  • the spatial position of the axis of rotation of the printing form cylinder is displaceable.
  • the spatial position of the axis of rotation of the impression cylinder can be fixed.
  • the spatial position of the axis of rotation of Ink roller and possibly other components of an inking unit of the printing unit according to the invention may be displaced.
  • the printing unit according to the invention has an adjustment mechanism and / or a Verstellaktorik, by means of which the pivoting movement and the distance variation of the plate cylinder can be executed coupled. In this way, a simplified operation of the adjustment with high automation is achieved. The economy can be increased.
  • the printing form cylinder can be detachably connected in the printing unit. Also, printing form cylinder can be accommodated with different diameters in the printing unit. Alternatively, intermediate sleeves with different diameters can be accommodated on the printing form cylinder.
  • the rotational axes of the printing form cylinder and the impression cylinder lie in a vertical plane during pressure adjustment, so that the printing gap lies in the upper tangential point of the impression cylinder (preferred) or of the printing plate cylinder.
  • the impression cylinder can form the center of the printing unit.
  • the printing unit comprises a drying device acting on a substrate located on the impression cylinder.
  • the drying device can be, for example, a UV drying unit, an infrared drying unit or a hot-air drying unit.
  • the printing unit is designed such that it is for the front side pressure in a first direction of rotation of the impression cylinder and for the back pressure in a second, opposite to the first direction of rotation the impression cylinder is operable.
  • impression cylinder and / or the printing form cylinder of the printing unit according to the invention can be driven by a separate drive.
  • a printing press in particular a label printing machine.
  • a printing press according to the invention is characterized by at least one printing unit according to the invention having features or combinations of features according to this representation.
  • the printing machine in a row construction and / or modular with respect to individual modules, in particular the printing units or groups of printing groups, including their supporting structures executed.
  • the substrate may be web-shaped.
  • the substrate may be a multilayer material web, in particular a self-adhesive label material on a carrier web.
  • the printing machine may be a web-processing printing press. It may comprise transport means for moving the web-shaped substrate through the printing press.
  • the printing press can be a so-called narrow web press.
  • the width of the web to be printed can be less than 900 mm, in particular less than 515 mm. Typical widths for embodiments of narrow web printing machines according to the invention are in particular 330 mm and 280 mm.
  • the printing machine according to the invention can have a plurality of printing units, in particular four printing units for a multi-color printing.
  • the printing press may have a plurality of printing units according to the invention. Due to the advantageous arrangement of the cylinder of the printing unit according to the invention short web paths can be realized by the printing press. As a consequence, the amount of waste occurring can advantageously be reduced. A faster print job facility is possible, the press can be quickly brought into the register.
  • the path of the web-shaped substrate can run straight through a plurality of printing units according to the invention.
  • the straight path of the web-shaped substrate can be horizontal.
  • a printing press according to the invention can also have the further features individually or in combination:
  • a printing unit according to the invention can be accommodated on a frame wall with one or more integrated drives.
  • the printing press may have receiving elements on which alternately modules for different printing processes or for processing / processing of the substrate are releasably connectable receivable.
  • Printing processes may be in particular: flexographic printing, gravure printing, letterpress printing, offset printing, direct or indirect planographic printing, film embossing printing, screen printing, inkjet printing or xerographic printing.
  • machining can be punching, cutting, punching, perforating, creasing, folding or painting.
  • the printing press can have a (normalized or neutral) interface, so that printing unit or processing unit components can be received in a connectable manner to the printing press.
  • components which can be used by all these plants or all components which complement each other for functionality can be directly part of the printing press.
  • the order of the individually arranged printing units and / or processing units can be selected or adapted according to the print order.
  • the printing unit according to the invention can be accommodated in a support element produced at least partially from stone, in particular natural stone or a natural stone, by means of a bearing element.
  • a printing machine with a support element made at least partially of stone is in the filed German patent application DE 10 2006 042 884.6 as well as the priority of these German patent applications claiming filed US patent application.
  • a printing press is operated with features or feature combinations according to this description, and a web-shaped substrate which is suitable for the production of labels or self-adhesive labels is processed.
  • a web-processing printing press is operated, in which the path of the web-shaped substrate extends straight through a plurality of printing units, in particular horizontally.
  • individual color separations of a multi-color print are wet-wet-nested.
  • drying can be carried out after multicolor printing has taken place.
  • FIG. 1 shows an inventive printing unit 10 for flexographic printing with a printing form cylinder 12, an impression cylinder 14 and an inking roller 16, more precisely an anilox roller.
  • the cylinders are each rotatable about their figure axes, wherein the impression cylinder 14 and the inking roller 16 are fixed to the frame in the printing press.
  • the impression cylinder 14 is arranged in the center of the printing unit 10.
  • a rocker 18 a bearing arm, in particular only or exactly one rocker arm 18, the printing form cylinder 12 is pivoted about the axis of rotation of the impression cylinder 14 (pivoting movement 20).
  • the rocker 18 is mounted in the axis of rotation of the impression cylinder 14.
  • the rocker 18 can drive side attack on the plate cylinder 12, so that the operator side for the purpose of format change the operator is accessible.
  • the rocker 18 has a linear guide 22, so that a linear distance variation 24 between the printing plate cylinder 12 and impression cylinder 14 by spatial displacement of the rotational axis of the plate cylinder 12 (without tilting the axis) performed becomes.
  • This embodiment represents a simple printing unit construction with a simple and precise impression cylinder adjustment.
  • the counter-pressure cylinder 14 has integrated cooling and, due to its arrangement, can be accessible at least three positions for drying the printed substrate on the impression cylinder 14 (see also below with reference to FIGS FIGS. 7 to 9 ).
  • one of the following actuators for the movement of the rocker can be used: screw in manual or threaded adjustment with motor adjustment, pneumatic cylinder, Hydraulic cylinder, gear with pinion in manual adjustment or gear with pinion with motor adjustment, worm with worm in manual adjustment or worm with worm with motor adjustment, timing belt in manual or timing belt with motor adjustment or a crank handle in manual adjustment / motor adjustment with threaded spindle, in cylinder adjustment by air pressure or hydraulics and in manual adjustment with rack and gear manually or with motor.
  • one of the following actuators for the movement of the linear slide can be used for the concrete realization of the distance variation, in particular in linear motion: screw jack in manual adjustment, screw jack with motor adjustment, threaded spindle in manual adjustment, threaded spindle with motor adjustment, rack and pinion in manual adjustment, rack and Gear with motor adjustment, pneumatic cylinder, hydraulic cylinder or a crank handle in manual adjustment / motor adjustment with threaded spindle, in cylinder adjustment by air pressure or hydraulic and in manual adjustment with rack and gear manually or with motor.
  • the aforementioned adjusting elements can also be designed in combination of manual and automatic adjusting members.
  • the adjustment can be manual, semi-automatic or fully automatic.
  • FIG. 2 1 shows a first embodiment of the printing unit 10 according to the invention with coupled degrees of freedom for the pivoting movement 20 and the linear distance variation 24.
  • the rocker 18 by means of an actuator 26, which may be concretely, for example, an actuator in the list above, moves.
  • the axis of the plate cylinder 12 is guided in a gate 28 and is acted upon by the force of a return element 30, for example a tension spring against the guideway of the link 28.
  • FIG. 3 refers schematically to a second embodiment of the printing unit 10 according to the invention with coupled degrees of freedom for the pivoting movement 20 and the linear distance variation 24.
  • a sliding block with actuator 26 which concretely
  • an actuator in the list above may be provided.
  • the axis of the plate cylinder 12 is acted upon by the force of a return element 30, such as a tension spring, against the link 28.
  • FIG. 4 is a view of a preferred embodiment of a printing machine 32 according to the invention, more specifically a label printing machine according to the invention, shown in a row construction, with printing units 10 according to the invention following in the horizontal direction.
  • the label printing machine is used to process a substrate 34 in web form.
  • the substrate is unrolled from a substrate roll 36 in a feed section 38 of the printing machine 32 and guided along a path through the printing press 32.
  • the printing machine 32 has a plurality of frame modules 40, here by way of example three frame modules 40.
  • two printing units 10 or a printing unit 10 and a processing unit 42, here a punching unit for punching the labels on the web-shaped substrate 34 are received on a rack module 40.
  • After the individual processing stations follows an outlet part 44, in which the finished products are wound up in a label roll 46.
  • Inlet part 38, frame modules 40 and outlet part 44 are detachably or separably connected to each other:
  • the printing machine 32 is modular.
  • the printing units 10 have various drying devices in the printing machine 32:
  • the drying cylinders 50 are assigned to the impression cylinders 14 at the respective printing nip of the printing unit 10, so that the printed substrate 34 can be dried directly on the impression cylinder 14.
  • the printing units 10 also have web guide rollers 52 for guiding the web-shaped substrate 34.
  • the fifth printing unit 10 comprises a hot air drying device 54 for both the top and the bottom of the substrate 34.
  • the hot air drying device 54 is disposed downstream of the fifth printing unit 10, the web-shaped substrate is passed through the hot air drying device 54.
  • the individual printing units 10 and the processing unit 42 are fastened by a receiving element 56 to the frame modules 40 of the printing press 32.
  • the second printing unit 10 is operated by way of example in the back pressure.
  • FIG. 5 shows a printing machine in a machine design according to FIG. 4 in a straight and horizontal web run configuration, allowing multi-color printing from wet to wet.
  • the web-shaped substrate 34 is moved by the substrate roller 36 in the feed part 38 in a straight and horizontal path, in a straight and horizontal path 58 through the printing units 10 received on the rack modules 40.
  • a hot air drying device 60 and a UV drying device 62 are provided before the processing unit 42 and after the fifth printing unit 10.
  • drying of the printed substrate 34 can be achieved by hot air (solvent displacement) or by UV light (curing).
  • the finished Labels are stored in the outlet part 44 in a label roll 46.
  • each of the printing units 10 the respective printing gap formed by the printing form cylinder 12 and counter-pressure cylinders 14, through which the web-shaped substrate 34 is guided, lies in the upper tangential point of the impression cylinder 14.
  • the format variability although not explicitly stated in US Pat FIG. 5 shown - the position of the inking roller 16 along with the other inking unit components, in particular the chambered doctor blade 48, made changeable, so that different print lengths, for example, by the recording of printing forme cylinder 12 with different diameters, can be achieved.
  • the printing form cylinder 12 is always hired in the upper tangency point of the impression cylinder 14 to the impression cylinder 14.
  • FIG. 6 in four partial images A to D refers to an embodiment of a frame module 40 for two printing units 10 according to the invention
  • FIG. 6 is a view of the frame module 40: It comprises a stone side wall 64, specifically a single natural stone, in particular a granite, or a monolith.
  • the mechanical interface is in each case a receiving element 56.
  • the stone side wall 64 rests on two base profiles 68.
  • the frame module 40 can be aligned by means of leveling elements 70.
  • the rack module 40 is shown from the side.
  • motors 72 are attached, which are accessible via the drive interfaces 66.
  • a process module 74 which has printing unit or processing components, and under the receiving element 56, an additional component module 76, which, for example, a hot air drying device, releasably connectable to the frame module 40 are added.
  • the receiving element 56 may for this purpose, for example, linear guides or rails, so that the process module 74 and / or the additional component module 76 can be postponed.
  • FIG. 7 serves in two partial images A and B, the explanation of the web run of the substrate 34 at front side printing and backside printing with simultaneous UV drying by an embodiment of the printing unit according to the invention 10.
  • the substrate 34 is guided in the substrate transport direction 78 through the printing unit 10.
  • the impression cylinder 14 is operated in a first direction of rotation 80 for the front side pressure.
  • the web-shaped substrate 34 guided around the web guide rollers 52 partially wraps around the counter-pressure cylinder 14.
  • the impression cylinder 14 forms a pressure gap in the upper tangency point with the printing-form cylinder 12.
  • the recorded on the printing form cylinder 12 printing plate is colored by means of the inking roller 16, which receives an ink supply by the chambered doctor blade 48.
  • a UV drying device 50 Downstream of the printing nip in the substrate transport direction 78 (right-hand outlet side) is a UV drying device 50, which dries the substrate 34 still located on the impression cylinder 14.
  • drawing B of the FIG. 7 For backside printing, the substrate is guided via the deflection rollers 82 over the printing unit 10 such that the printing forme cylinder 12 and counterpressure cylinder 14 are reached from the opposite direction compared to the configuration of the partial image A.
  • the counter-pressure cylinder 14 rotates in a second direction of rotation 84.
  • a UV drying device 50 is arranged at a different position compared to the situation shown in the partial image A, which substrate 34 is still on the impression cylinder 14 dries.
  • FIG. 8 with two partial images A and B is the web run at front side printing and backside printing with simultaneous UV drying in an alternative arrangement to FIG. 7 represented by an embodiment of the printing unit 10 according to the invention.
  • Both the configuration for the front side print in the part A of the FIG. 8 as well as the configuration for the backside printing in the partial image B of the FIG. 8 correspond to the partial images A and B of FIG. 7 ,
  • the same reference numerals are used, so that the previous, the FIG. 7 Reference is made to reference.
  • a UV drying device 50 directed at the lower tangential point of the impression cylinder 14 is shown.
  • the printing unit 10 both in the front side printing, as in Partial picture A of the FIG.
  • the web-shaped substrate 34 is guided in each case in such a sufficiently wide loop around the impression cylinder 14 that a direct drying of the substrate 34 can be carried out on the impression cylinder 14 in the lower tangency point.
  • further web guiding rollers 86 are provided for the front side printing, while for the rear side printing the web-shaped substrate is removed from the printing unit 10 via the other of the two web guiding rollers.
  • FIG. 9 shows in two partial images A and B the web run at front side pressure and back pressure with simultaneous hot air drying in an alternative arrangement to the FIGS. 7 and 8th by an embodiment of the printing unit 10 according to the invention.
  • Both the configuration for the front side printing in the partial image A of FIG. 9 as well as the configuration for the backside printing in the partial image B of the FIG. 9 correspond to the subpictures A and B of FIG. 7 ,
  • the same reference numerals are used, so that the previous, the FIG. 7 Reference is made to reference.
  • a hot air drying device 54 is arranged below the impression cylinder 14. This can be used for both-sided drying of the web-shaped substrate both at the front side pressure (partial image A of FIG.
  • the hot-air drying device 54 As well as the backside printing (drawing B of the FIG. 9 ) are used.
  • further web guide rollers 86 are provided.
  • the web-shaped substrate 34 is supplied to the hot-air drying device 54 from the original inlet side of the substrate 34 into the printing unit 10, respectively. In other words, the hot-air drying device 54 is operated in the same direction or orientation in both cases.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Methods (AREA)

Description

Die Erfindung betrifft ein Druckwerk mit einem Druckformzylinder, einem Gegendruckzylinder und einer Farbauftragswalze, in welchem eine auf dem Druckformzylinder aufgenommene Druckform in Kontakt zu der Farbauftragswalze anstellbar ist, wobei der Druckformzylinder und der Gegendruckzylinder einen Druckspalt bilden, in welchem ein Substrat bedruckbar ist. Des Weiteren betrifft die Erfindung eine Druckmaschine mit einem derartigen Druckwerk.The invention relates to a printing unit with a printing form cylinder, an impression cylinder and an inking roller, in which a recorded on the printing form cylinder printing plate in contact with the inking roller is adjustable, wherein the printing form cylinder and the impression cylinder form a printing nip, in which a substrate is printable. Furthermore, the invention relates to a printing press with such a printing unit.

An für den Etikettendruck oder Verpackungsdruck konzipierte oder eingesetzte Druckmaschinen werden in zunehmenden Maße besonders hohe Anforderungen hinsichtlich der Wirtschaftlichkeit und der Einfachheit der Bedienung bei gleichzeitig maximierter Variabilität für die Produktherstellung gestellt. Beispielsweise soll die Druckmaschine möglichst wenig Makulatur, beispielsweise beim Umrüsten zwischen verschiedenen Druckaufträgen, auch zwischen verschiedenen Druckverfahren oder Drucklängen, verursachen. Geläufige für den Etikettendruck, insbesondere für den Selbstklebeetikettendruck, ausgelegte Schmalbahndruckmaschinen in Reihenbauweise weisen meist einen Maschinenaufbau auf, in dem ein Bedruckstoff oder ein Substrat über eine Vielzahl von Zylindern und Walzen zwischen verschiedenen Prozessebenen (beispielsweise für den Druck und für die Trocknung) geführt wird, so dass ein nicht unerheblich langer Bahnabschnitt in der Druckmaschine gespeichert ist und potentiell entsprechende Makulatur anfallen kann. Eine zwischen verschiedenen Druckverfahren umrüstbare Etikettendruckmaschine ist im Dokument WO 2005/028202 A1 beschrieben. Um zu erreichen, dass nur ein vergleichsweise kurzer Bahnabschnitt in der Druckmaschine gespeichert ist, wird für einen anderen Maschinenaufbau vor allem eine Druckwerkskonfiguration benötigt, welche einerseits die gewünschte Variabilität in Bezug auf Druckverfahren und Drucklängen und anderseits einen kurzen Bahnweg ermöglicht.Printing presses that are designed or used for label printing or packaging printing are becoming increasingly demanding in terms of cost-effectiveness and ease-of-use while at the same time maximizing variability for product production. For example, the printing machine should cause as little paper waste as possible, for example when converting between different print jobs, and also between different printing methods or print lengths. Common narrow-web presses designed for label printing, in particular for self-adhesive label printing, usually have a machine construction in which a printing material or a substrate is passed between different process levels (for example for printing and for drying) via a large number of cylinders and rollers. so that a not insignificantly long web section is stored in the printing press and potentially corresponding waste can occur. A convertible between different printing process label printing machine is in the document WO 2005/028202 A1 described. In order to achieve that only a comparatively short web section is stored in the printing press, a printing press configuration is required for another machine structure, which on the one hand enables the desired variability with regard to printing methods and printing lengths and, on the other hand, a short web path.

Für die An- und Abstellung von einzelnen Zylindern in einem Druckwerk ist häufig vorgesehen, dass Zylinder schwenkbar aufgenommen sind. Im Dokument DE 44 35 986 A1 ist ein Offsetdruckwerk mit einer entsprechenden An- und Abstellvorrichtung für den Gummituchzylinder offenbart. Mittels der Verlagerung von Schwenkarmen kann eine Einstellung des optimalen Drucks und eine Anpassung an die Bedruckstoffdicke erreicht werden. Beispielsweise ist ein drucklängenvariables Druckwerk für den Offsetdruck im Dokument EP 1 101 611 A1 beschrieben. Um eine Achse werden mittels Spindelantrieben Lagerarme geschwenkt, um die Rotationsachsen des Druckformzylinders, des Gummituchzylinders und des Gegendruckzylinders auseinander beziehungsweise zueinander zu bewegen. Druckzylinder und Gummituchzylinder unterschiedlichen Formats können in das Druckwerk eingesetzt werden.For the arrival and dismantling of individual cylinders in a printing unit is often provided that cylinders are pivotally received. In the document DE 44 35 986 A1 is an offset printing unit with a corresponding on and off device for the Blanket cylinder disclosed. By means of the displacement of swivel arms, an adjustment of the optimum pressure and an adaptation to the substrate thickness can be achieved. For example, a variable-length printing unit for offset printing is in the document EP 1 101 611 A1 described. Bearing arms are pivoted about an axis by means of spindle drives in order to move the axes of rotation of the printing forme cylinder, the blanket cylinder and the impression cylinder apart from one another or to each other. Printing cylinder and blanket cylinder different format can be used in the printing unit.

Im Dokument GB 1,147,778 ist eine Ausführungsform eines Offsetdruckwerks einer Bogendruckmaschine beschrieben, in welcher zur An- und Abstellung der Gummituchzylinder mittels eines Lagerarms um die Rotationsachse des Druckformzylinders schwenkbar ist, wobei gleichzeitig in einer überlagerten Radialbewegung der Gummituchzylinder vom Druckformzylinder abgehoben werden kann.In the document GB 1,147,778 an embodiment of an offset printing unit of a sheet-fed printing machine is described, in which for turning on and off the blanket cylinder by means of a bearing arm about the axis of rotation of the printing forme cylinder is pivotable, at the same time in a superimposed radial movement of the blanket cylinder can be lifted from the plate cylinder.

Die nachveröffentliche Druckschrift EP 2006 099 A2 offenbart eine Etikettendruckmaschine mit einer Mehrzahl von Druckwerken, wobei jedes Druckwerk einen Zylinder und einen Gegendruckzylinder besitzt, die einen Druckspalt bilden. Die Rotationsachse des Zylinders ist dabei durch eine lineare Bewegung eines Aufnahmeelements verschränkbar relativ zur Rotationsachse des Gegendruckzylinders, so dass eine Diagonalregisterverstellung realisierbar ist.The post-published publication EP 2006 099 A2 discloses a label printing machine having a plurality of printing units, each printing unit having a cylinder and an impression cylinder forming a printing nip. The rotational axis of the cylinder is thereby ver¬ verkabbar by a linear movement of a receiving element relative to the axis of rotation of the impression cylinder, so that a diagonal register adjustment can be realized.

Aufgabe der vorliegenden Erfindung ist es, ein Druckwerk in kompakter Bauweise zu schaffen, in welchem der Druckformzylinder von den ihn kontaktierenden Zylindern zwecks Formatvariation abstellbar ist.Object of the present invention is to provide a printing unit in a compact design, in which the printing forme cylinder of the cylinders contacting him for the purpose of format variation is turned off.

Diese Aufgabe wird erfindungsgemäß durch ein Druckwerk mit den Merkmalen gemäß Anspruch 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen charakterisiert.This object is achieved by a printing unit with the features of claim 1. Advantageous developments of the invention are characterized in the dependent claims.

Ein erfindungsgemäßes Druckwerk umfasst einen Druckformzylinder, einen Gegendruckzylinder und eine Farbauftragswalze. Im erfindungsgemäßen Druckwerk ist eine auf dem Druckformzylinder aufgenommene Druckform in Kontakt zu der Farbauftragswalze anstellbar, wobei der Druckformzylinder und der Gegendruckzylinder einen Druckspalt bilden, in welchem ein Substrat bedruckbar ist. Der Druckformrylinder ist um eine parallel zur Rotationsachse des Gegendruckzylinders verlaufende Schwenkachse um den Gegendruckzylinder schwenkbar und der Abstand der Druckformzylinders und des Gegendruckzylinders variierbar.An inventive printing unit comprises a printing form cylinder, an impression cylinder and an inking roller. In the printing unit according to the invention, a printing form recorded on the printing form cylinder can be set in contact with the inking roller, wherein the printing form cylinder and the impression cylinder form a printing gap in which a substrate can be printed. The printing form cylinder is pivotable about a parallel to the axis of rotation of the impression cylinder pivot axis about the impression cylinder and the distance of Printing form cylinder and the impression cylinder variable.

Die Schwenkachse kann insbesondere innerhalb der Kontur des Gegendruckzylinders liegen. Darüber hinaus oder alternativ dazu kann beim Schwenken des Druckformzylinders um die Schwenkachse der Gegendruckzylinder wenigstens teilweise in einem durch eine von der Rotationsachse des Druckformzylinders überstrichenen Linie begrenzten Kreissegment liegen. Mit anderen Worten, der Druckformzylinder ist um den Gegendruckzylinder schwenkbar und nicht von ihm weg schwenkbar. Die Schwenkachse kann, von der Rotationsachse des Druckformzylinders aus betrachtet, innerhalb des Druckformzylinders oder hinter dem Druckformzylinder liegen. Die Abstandsvariation der Rotationsachsen kann entlang eines linearen oder geraden Weges erfolgen. Je nach konkreter Ausführungsform des erfindungsgemäßen Druckwerks können der Gegendruckzylinder und/oder die Farbauftragswalze mit gestellfest gelagerter oder mit positionsveränderbarer Rotationsachse aufgenommen sein.The pivot axis may in particular lie within the contour of the impression cylinder. In addition, or alternatively, when the printing forme cylinder is pivoted about the pivot axis, the impression cylinder can at least partially lie in a circle segment bounded by a line swept by the axis of rotation of the printing forme cylinder. In other words, the printing form cylinder is pivotable about the impression cylinder and not pivoted away from it. The pivot axis may, viewed from the axis of rotation of the printing forme cylinder, lie within the plate cylinder or behind the plate cylinder. The distance variation of the axes of rotation may be along a linear or straight path. Depending on the specific embodiment of the printing unit according to the invention, the counter-pressure cylinder and / or the inking roller can be accommodated with a frame-mounted or with a position-variable rotation axis.

Insbesondere ist ein den Druckformzylinder aufnehmendes Element schwenkbar, wobei der Abstand der Aufnahme des Druckformzylinders zur Schwenkachse verstellbar ist. Durch die Kombination der beiden Bewegungsfreiheitsgrade oder Verstellmöglichkeiten kann eine Formatanpassung, eine Druckanstellung und Druckabstellung sowie eine Beistellung an die Farbauftragswalze zur Einfärbung erfolgen. Das erfindungsgemäße Druckwerk benötigt nur einen geringen Bauraum und setzt sich kostengünstig aus wenigen Bauteilen zusammen.In particular, a printing forme cylinder receiving element is pivotable, wherein the distance of the receptacle of the printing forme cylinder is adjustable to the pivot axis. By combining the two degrees of freedom of movement or adjustment, a format adjustment, a print job and print job and an addition to the inking roller for coloring done. The printing unit according to the invention requires only a small space and is inexpensive together of few components.

Insbesondere vorteilhaft für den Etikettendruck kann das erfindungsgemäße Druckwerk für die Ausführung eines flexographischen Druckverfahrens oder für die Ausführung eines Buchdruckverfahrens oder für die Ausführung eines Tiefdruckverfahrens ausgelegt sein.Particularly advantageous for label printing, the printing unit according to the invention can be designed for the execution of a flexographic printing process or for the execution of a letterpress printing process or for the execution of a gravure printing process.

Bevorzugt verläuft die Schwenkachse des Druckformzylinders entlang der Zylindermittelachse des Gegendruckzylinders oder fällt mit der Zylindermittelachse des Gegendruckzylinders zusammen. Ebenfalls bevorzugt ist die Raumlage der Rotationsachse des Druckformzylinders verschiebbar. Die Raumlage der Rotationsachse des Gegendruckzylinders kann fest sein. Die Raumlage der Rotationsachse der Farbauftragswalze und gegebenenfalls weiterer Bauteile eines Farbwerks des erfindungsgemäßen Druckwerks können verschiebbar sein.Preferably, the pivot axis of the printing form cylinder runs along the cylinder center axis of the impression cylinder or coincides with the cylinder center axis of the impression cylinder. Also preferably, the spatial position of the axis of rotation of the printing form cylinder is displaceable. The spatial position of the axis of rotation of the impression cylinder can be fixed. The spatial position of the axis of rotation of Ink roller and possibly other components of an inking unit of the printing unit according to the invention may be displaced.

In einer vorteilhaften Ausführungsform weist das erfindungsgemäße Druckwerk eine Verstellungsmechanik und/oder eine Verstellungsaktorik auf, mittels welcher die Schwenkbewegung und die Abstandsvariation des Druckformzylinders gekoppelt ausführbar sind. Auf diese Weise wird eine vereinfachte Bedienung der Verstellung mit hoher Automatisierung erreicht. Die Wirtschaftlichkeit kann erhöht werden.In an advantageous embodiment, the printing unit according to the invention has an adjustment mechanism and / or a Verstellaktorik, by means of which the pivoting movement and the distance variation of the plate cylinder can be executed coupled. In this way, a simplified operation of the adjustment with high automation is achieved. The economy can be increased.

Im erfindungsgemäßen Druckwerk kann der Druckformzylinder lösbar verbunden im Druckwerk aufgenommen sein. Auch können Druckformzylinder mit unterschiedlichen Durchmessern im Druckwerk aufnehmbar sein. Alternativ dazu können auf dem Druckformzylinder Zwischenhülsen mit unterschiedlichen Durchmessern aufnehmbar sein.In the printing unit according to the invention, the printing form cylinder can be detachably connected in the printing unit. Also, printing form cylinder can be accommodated with different diameters in the printing unit. Alternatively, intermediate sleeves with different diameters can be accommodated on the printing form cylinder.

In einer bevorzugten Ausführungsform liegen im erfindungsgemäßen Druckwerk bei Druckanstellung die Rotationsachsen des Druckformzylinders und des Gegendruckzylinders in einer senkrechten Ebene, so dass der Druckspalt im oberen Tangentialpunkt des Gegendruckzylinders (bevorzugt) oder des Druckformzylinders liegt.
Der Gegendruckzylinder kann das Zentrum des Druckwerks bilden.
In a preferred embodiment, in the printing unit according to the invention, the rotational axes of the printing form cylinder and the impression cylinder lie in a vertical plane during pressure adjustment, so that the printing gap lies in the upper tangential point of the impression cylinder (preferred) or of the printing plate cylinder.
The impression cylinder can form the center of the printing unit.

In einer Weiterbildung der Erfindung umfasst das Druckwerk eine auf ein sich auf dem Gegendruckzylinder befindendes Substrat wirkende Trocknungseinrichtung. Die Trocknungseinrichtung kann in konkreten Ausführungsformen beispielsweise eine UV-Trocknungseinheit, eine Infrarottrockungseinheit oder eine Heißlufttrocknung sein. In vorteilhafter Konsequenz können Prozessebenen einer mit dem erfindungsgemäßen Druckwerk ausgestatteten Druckmaschine zusammengefasst werden, so dass ein kurzer Bahnweg durch die Druckmaschine erreicht wird.In one development of the invention, the printing unit comprises a drying device acting on a substrate located on the impression cylinder. In concrete embodiments, the drying device can be, for example, a UV drying unit, an infrared drying unit or a hot-air drying unit. In an advantageous consequence, process levels of a printing machine equipped with the printing unit according to the invention can be combined, so that a short path through the printing press is achieved.

Es kann vorgesehen sein, dass das Druckwerk derart ausgelegt ist, dass es für den Vorderseitendruck in einer ersten Drehrichtung des Gegendruckzylinders und für den Rückseitendruck in einer zweiten, der ersten Drehrichtung entgegengesetzten Drehrichtung des Gegendruckzylinders betreibbar ist.It can be provided that the printing unit is designed such that it is for the front side pressure in a first direction of rotation of the impression cylinder and for the back pressure in a second, opposite to the first direction of rotation the impression cylinder is operable.

Der Gegendruckzylinder und/oder der Druckformzylinder des erfindungsgemäßen Druckwerks können mit einem separaten Antrieb antreibbar sein.The impression cylinder and / or the printing form cylinder of the printing unit according to the invention can be driven by a separate drive.

Im Zusammenhang des erfinderischen Gedankens steht auch eine Druckmaschine, insbesondere eine Etikettendruckmaschine. Eine erfindungsgemäße Druckmaschine zeichnet sich durch wenigstens ein erfindungsgemäßes Druckwerk mit Merkmalen oder Merkmalskombinationen gemäß dieser Darstellung aus. Bevorzugt ist die Druckmaschine in Reihenbauweise und/oder modular hinsichtlich einzelner Baugruppen, insbesondere der Druckwerke oder Druckwerksgruppen, einschließlich deren Tragkonstruktionen, ausgeführt.In the context of the inventive idea is also a printing press, in particular a label printing machine. A printing press according to the invention is characterized by at least one printing unit according to the invention having features or combinations of features according to this representation. Preferably, the printing machine in a row construction and / or modular with respect to individual modules, in particular the printing units or groups of printing groups, including their supporting structures executed.

Das Substrat kann bahnförmig sein. Insbesondere kann das Substrat eine mehrschichtige Materialbahn sein, insbesondere ein Selbstklebeetikettenmaterial auf einer Trägerbahn. Die Druckmaschine kann eine bahnverarbeitende Druckmaschine sein. Sie kann Transportmittel zur Bewegung des bahnförmigen Substrats durch die Druckmaschine aufweisen. Die Druckmaschine kann eine so genannte Schmalbahndruckmaschine sein. Die Breite der zu bedruckenden Bahn kann unter 900 mm, insbesondere unter 515 mm betragen. Typische Breiten für Ausführungsformen von erfindungsgemäßen Schmalbahndruckmaschinen sind insbesondere 330 mm und 280 mm.The substrate may be web-shaped. In particular, the substrate may be a multilayer material web, in particular a self-adhesive label material on a carrier web. The printing machine may be a web-processing printing press. It may comprise transport means for moving the web-shaped substrate through the printing press. The printing press can be a so-called narrow web press. The width of the web to be printed can be less than 900 mm, in particular less than 515 mm. Typical widths for embodiments of narrow web printing machines according to the invention are in particular 330 mm and 280 mm.

Die erfindungsgemäße Druckmaschine kann eine Mehrzahl von Druckwerken aufweisen, insbesondere vier Druckwerke für einen Mehrfarbendruck. Die Druckmaschine kann eine Mehrzahl von erfindungsgemäßen Druckwerken aufweisen. Aufgrund der vorteilhaften Anordnung der Zylinder des erfindungsgemäßen Druckwerks können kurze Bahnwege durch die Druckmaschine realisiert werden. In Konsequenz kann die Menge auftretender Makulatur in vorteilhafter Weise verringert werden. Eine schnellere Druckauftragseinrichtung ist möglich, die Druckmaschine kann schnell ins Register gebracht werden.The printing machine according to the invention can have a plurality of printing units, in particular four printing units for a multi-color printing. The printing press may have a plurality of printing units according to the invention. Due to the advantageous arrangement of the cylinder of the printing unit according to the invention short web paths can be realized by the printing press. As a consequence, the amount of waste occurring can advantageously be reduced. A faster print job facility is possible, the press can be quickly brought into the register.

In besonders für den Etikettendruck bevorzugten Ausführungsformen der erfindungsgemäßen Druckmaschine kann der Weg des bahnförmigen Substrats gerade durch eine Mehrzahl von erfindungsgemäßen Druckwerken verlaufen. Dabei kann der gerade Weg des bahnförmigen Substrats horizontal verlaufen.In embodiments of the printing press according to the invention which are particularly preferred for label printing, the path of the web-shaped substrate can run straight through a plurality of printing units according to the invention. In this case, the straight path of the web-shaped substrate can be horizontal.

Eine erfindungsgemäße Druckmaschine kann darüber hinaus auch die weiteren Merkmale einzeln oder in Kombination aufweisen: Ein erfindungsgemäßes Druckwerk kann an einer Gestellwand mit einem oder mehreren integrierten Antrieben aufgenommen sein. Die Druckmaschine kann Aufnahmeelemente aufweisen, an denen wechselweise Module für unterschiedliche Druckverfahren oder zur Bearbeitung/zur Veredelung des Substrats lösbar verbindbar aufnehmbar sind. Druckverfahren können insbesondere sein: Flexodruck, Tiefdruck, Buchdruck, Offsetdruck, direkter oder indirekter Flachdruck, Folienprägedruck, Siebdruck, Tintenstrahldruck oder xerographischer Druck. Eine Bearbeitung kann insbesondere sein: Stanzen, Schneiden, Ausstanzen, Perforieren, Rillen, Falzen oder Lackieren. Anders ausgedrückt, die Druckmaschine kann eine (normierte oder neutrale) Schnittstelle aufweisen, so dass Druckwerks- oder Bearbeitungswerkskomponenten mit der Druckmaschine verbindbar aufnehmbar sind. Insbesondere können durch alle diese Werke nutzbare Komponenten oder alle diese Werke jeweils zur Funktionstüchtigkeit ergänzende Komponenten direkt Teil der Druckmaschine sein. Die Reihenfolge der einzeln angeordneten Druckwerke und/oder Bearbeitungswerke ist druckauftragsgemäß wählbar oder anpassbar.In addition, a printing press according to the invention can also have the further features individually or in combination: A printing unit according to the invention can be accommodated on a frame wall with one or more integrated drives. The printing press may have receiving elements on which alternately modules for different printing processes or for processing / processing of the substrate are releasably connectable receivable. Printing processes may be in particular: flexographic printing, gravure printing, letterpress printing, offset printing, direct or indirect planographic printing, film embossing printing, screen printing, inkjet printing or xerographic printing. In particular, machining can be punching, cutting, punching, perforating, creasing, folding or painting. In other words, the printing press can have a (normalized or neutral) interface, so that printing unit or processing unit components can be received in a connectable manner to the printing press. In particular, components which can be used by all these plants or all components which complement each other for functionality can be directly part of the printing press. The order of the individually arranged printing units and / or processing units can be selected or adapted according to the print order.

Das erfindungsgemäße Druckwerk kann in einem wenigstens teilweise aus Stein, insbesondere Naturstein oder einem Naturstein aufweisenden Verbundwerkstoff, gefertigten Tragelement mittels eines Lagerelements aufgenommen werden/sein. Eine Druckmaschine mit einem wenigstens teilweise aus Stein gefertigten Tragelements ist in der eingereichten deutschen Patentanmeldung DE 10 2006 042 884.6 sowie der die Priorität dieser deutschen Patentanmeldungen beanspruchenden eingereichten amerikanischen Patentanmeldung beschrieben.The printing unit according to the invention can be accommodated in a support element produced at least partially from stone, in particular natural stone or a natural stone, by means of a bearing element. A printing machine with a support element made at least partially of stone is in the filed German patent application DE 10 2006 042 884.6 as well as the priority of these German patent applications claiming filed US patent application.

Im Zusammenhang der Erfindung steht des Weiteren auch ein Verfahren zum Herstellen von Etiketten oder von Selbstklebeetiketten in einer Druckmaschine. Erfindungsgemäß wird eine Druckmaschine mit Merkmalen oder Merkmalskombinationen gemäß dieser Beschreibung betrieben und ein bahnförmiges Substrat, welches für die Herstellung von Etiketten oder von Selbstklebeetiketten geeignet ist, verarbeitet. In einer bevorzugten Ausführungsform wird eine bahnverarbeitende Druckmaschine betrieben, in welcher der Weg des bahnförmigen Substrats durch eine Mehrzahl von Druckwerken gerade, insbesondere horizontal verläuft. Dabei werden einzelne Farbauszüge eines Mehrfarbendrucks nass in nass ineinander gedruckt. Optional kann eine Trocknung nach erfolgtem Mehrfarbendruck erfolgen.In the context of the invention is also a method for producing labels or self-adhesive labels in a printing press. According to the invention, a printing press is operated with features or feature combinations according to this description, and a web-shaped substrate which is suitable for the production of labels or self-adhesive labels is processed. In a preferred embodiment, a web-processing printing press is operated, in which the path of the web-shaped substrate extends straight through a plurality of printing units, in particular horizontally. In this case, individual color separations of a multi-color print are wet-wet-nested. Optionally, drying can be carried out after multicolor printing has taken place.

Weitere Vorteile und vorteilhafte Ausführungsformen und Weiterbildungen der Erfindung werden nachfolgende unter Bezugnahme auf die beigefügten Figuren beschrieben. Es zeigt im Einzelnen:

Figur 1
eine schematische Darstellung einer bevorzugten Ausführungsform des erfindungsgemäßen Druckwerks zur Erläuterung der Bewegungsfreiheitsgrade,
Figur 2
eine erste Ausführungsform des erfindungsgemäßen Druckwerks mit gekoppelten Freiheitsgraden,
Figur 3
eine zweite Ausführungsform des erfindungsgemäßen Druckwerks mit gekoppelten Freiheitsgraden,
Figur 4
eine Ansicht einer bevorzugten Ausführungsform einer erfindungsgemäßen Druckmaschine,
Figur 5
eine Ansicht der Druckmaschine gemäß Figur 4 in einer Betriebskonfiguration mit geradem und horizontalen Bahnlauf,
Figur 6
in vier Teilbildern A bis D eine Ausführungsform eines Gestellmoduls für zwei Druckwerke,
Figur 7
in zwei Teilbildern A und B den Bahnlauf bei Vorderseitendruck und bei Rückseitendruck bei gleichzeitiger UV-Trocknung durch eine Ausführungsform des erfindungsgemäßen Druckwerks,
Figur 8
in zwei Teilbildern A und B den Bahnlauf bei Vorderseitendruck und bei Rückseitendruck bei gleichzeitiger UV-Trocknung in alternativer Anordnung zur Figur 7 durch eine Ausführungsform des erfindungsgemäßen Druckwerks, und
Figur 9
in zwei Teilbildern A und B den Bahnlauf bei Vorderseitendruck und bei Rückseitendruck bei gleichzeitiger Heißlufttrocknung in alternativer Anordnung zu den Figuren 7 und 8 durch eine Ausführungsform des erfindungsgemäßen Druckwerks.
Further advantages and advantageous embodiments and developments of the invention are described below with reference to the accompanying figures. It shows in detail:
FIG. 1
a schematic representation of a preferred embodiment of the printing unit according to the invention for explaining the degrees of freedom of movement,
FIG. 2
A first embodiment of the printing unit according to the invention with coupled degrees of freedom,
FIG. 3
A second embodiment of the printing unit according to the invention with coupled degrees of freedom,
FIG. 4
a view of a preferred embodiment of a printing machine according to the invention,
FIG. 5
a view of the printing machine according to FIG. 4 in an operating configuration with straight and horizontal web run,
FIG. 6
in four partial images A to D an embodiment of a rack module for two printing units,
FIG. 7
in two partial images A and B the web run at front side printing and at backside printing with simultaneous UV drying by an embodiment of the printing unit according to the invention,
FIG. 8
in two sub-images A and B the web run at front side printing and backside printing with simultaneous UV drying in an alternative arrangement to FIG. 7 by an embodiment of the printing unit according to the invention, and
FIG. 9
in two fields A and B, the web run at front side pressure and back pressure with simultaneous hot air drying in an alternative arrangement to the FIGS. 7 and 8th by an embodiment of the printing unit according to the invention.

Die Figur 1 zeigt ein erfindungsgemäßes Druckwerk 10 für den Flexodruck mit einem Druckformzylinder 12, einem Gegendruckzylinder 14 und einer Farbauftragswalze 16, genauer eine Rasterwalze. Die Zylinder sind jeweils um ihre Figurenachsen rotierbar, wobei der Gegendruckzylinder 14 und die Farbauftragswalze 16 gestellfest in der Druckmaschine aufgenommen sind. Der Gegendruckzylinder 14 ist im Zentrum des Druckwerks 10 angeordnet. Mittels einer Schwinge 18, einem Lagerarm, insbesondere nur oder genau einer Schwinge 18, wird der Druckformzylinder 12 um die Rotationsachse des Gegendruckzylinders 14 geschwenkt (Schwenkbewegung 20). Die Schwinge 18 ist in der Rotationsachse des Gegendruckzylinders 14 gelagert. Die Schwinge 18 kann antriebsseitig an den Druckformzylinder 12 angreifen, so dass dieser bedienseitig zwecks Formatwechsels dem Maschinenbediener zugänglich ist. Die Schwinge 18 weist eine Linearführung 22 auf, so dass eine lineare Abstandsvariation 24 zwischen Druckformzylinder 12 und Gegendruckzylinder 14 durch Raumlageverschiebung der Rotationsachse des Druckformzylinders 12 (ohne Verkippung der Achse) durchgeführt wird. Diese Ausführungsform stellt eine einfache Druckwerkskonstruktion mit einer einfachen und präzisen Druckzylinderverstellung dar.The FIG. 1 shows an inventive printing unit 10 for flexographic printing with a printing form cylinder 12, an impression cylinder 14 and an inking roller 16, more precisely an anilox roller. The cylinders are each rotatable about their figure axes, wherein the impression cylinder 14 and the inking roller 16 are fixed to the frame in the printing press. The impression cylinder 14 is arranged in the center of the printing unit 10. By means of a rocker 18, a bearing arm, in particular only or exactly one rocker arm 18, the printing form cylinder 12 is pivoted about the axis of rotation of the impression cylinder 14 (pivoting movement 20). The rocker 18 is mounted in the axis of rotation of the impression cylinder 14. The rocker 18 can drive side attack on the plate cylinder 12, so that the operator side for the purpose of format change the operator is accessible. The rocker 18 has a linear guide 22, so that a linear distance variation 24 between the printing plate cylinder 12 and impression cylinder 14 by spatial displacement of the rotational axis of the plate cylinder 12 (without tilting the axis) performed becomes. This embodiment represents a simple printing unit construction with a simple and precise impression cylinder adjustment.

In einer nicht zeichnerisch dargestellten Weiterentwicklung besitzt der Gegendruckzylinder 14 eine integrierte Kühlung und kann aufgrund seiner Anordnung an mindestens drei Positionen für eine Trocknung des bedruckten Substrats auf dem Gegendruckzylinder 14 zugänglich sein (siehe auch unten unter Bezugnahme auf die Figuren 7 bis 9).In a further development not shown in the drawing, the counter-pressure cylinder 14 has integrated cooling and, due to its arrangement, can be accessible at least three positions for drying the printed substrate on the impression cylinder 14 (see also below with reference to FIGS FIGS. 7 to 9 ).

Für die konkrete Realisierung der Schwenkbewegung kann beispielsweise eines der folgenden Stellglieder für die Bewegung der Schwinge zum Einsatz gelangen: Gewindetrieb in Handverstellung oder Gewindetrieb mit Motorverstellung, Pneumatikzylinder,
Hydraulikzylinder, Zahnrad mit Ritzel in Handverstellung oder Zahnrad mit Ritzel mit Motorverstellung, Schnecke mit Schneckenrad in Handverstellung oder Schnecke mit Schneckenrad mit Motorverstellung, Zahnriemen in Handverstellung oder Zahnriemen mit Motorverstellung oder eine Schubkurbelschwinge in Handverstellung/Motorverstellung mit Gewindespindel, in Zylinderverstellung durch Luftdruck oder Hydraulik sowie in Handverstellung mit Zahnstange und Zahnrad manuell oder mit Motor.
For the concrete realization of the pivoting movement, for example, one of the following actuators for the movement of the rocker can be used: screw in manual or threaded adjustment with motor adjustment, pneumatic cylinder,
Hydraulic cylinder, gear with pinion in manual adjustment or gear with pinion with motor adjustment, worm with worm in manual adjustment or worm with worm with motor adjustment, timing belt in manual or timing belt with motor adjustment or a crank handle in manual adjustment / motor adjustment with threaded spindle, in cylinder adjustment by air pressure or hydraulics and in manual adjustment with rack and gear manually or with motor.

Für die konkrete Realisierung der Abstandsvariation, insbesondere in Linearbewegung, kann beispielsweise eines der folgenden Stellglieder für die Bewegung des Linearschiebers zum Einsatz gelangen: Spindelhubgetriebe in Handverstellung, Spindelhubgetriebe mit Motorverstellung, Gewindespindel in Handverstellung, Gewindespindel mit Motorverstellung, Zahnstange und Zahnrad in Handverstellung, Zahnstange und Zahnrad mit Motorverstellung, Pneumatikzylinder, Hydraulikzylinder oder eine Schubkurbelschwinge in Handverstellung/Motorverstellung mit Gewindespindel, in Zylinderverstellung durch Luftdruck oder Hydraulik sowie in Handverstellung mit Zahnstange und Zahnrad manuell oder mit Motor.For example, one of the following actuators for the movement of the linear slide can be used for the concrete realization of the distance variation, in particular in linear motion: screw jack in manual adjustment, screw jack with motor adjustment, threaded spindle in manual adjustment, threaded spindle with motor adjustment, rack and pinion in manual adjustment, rack and Gear with motor adjustment, pneumatic cylinder, hydraulic cylinder or a crank handle in manual adjustment / motor adjustment with threaded spindle, in cylinder adjustment by air pressure or hydraulic and in manual adjustment with rack and gear manually or with motor.

Die genannten Stellelemente können auch in Kombination von manuellen und automatischen Verstellgliedern ausgeführt sein. Mit anderen Worten, die Verstellung kann manuell, teilautomatisch oder vollautomatisch erfolgen.The aforementioned adjusting elements can also be designed in combination of manual and automatic adjusting members. In other words, the adjustment can be manual, semi-automatic or fully automatic.

Die Figur 2 stellt eine erste Ausführungsform des erfindungsgemäßen Druckwerks 10 mit gekoppelten Freiheitsgraden für die Schwenkbewegung 20 und die lineare Abstandsvariation 24 dar. Um den Druckformzylinder 12 von der Farbauftragswalze 16 abzustellen und gleichzeitig auch den Rotationsachsabstand gegenüber dem Gegendruckzylinder 14 zu vergrößern, wird die Schwinge 18 mittels eines Stellglieds 26, welches konkret zum Beispiel ein Stellglied in der oben aufgeführten Liste sein kann, bewegt. Die Achse des Druckformzylinders 12 wird in einer Kulisse 28 geführt und ist mit der Kraftwirkung eines Rückstellelements 30, beispielsweise einer Zugfeder, gegen die Führungsbahn der Kulisse 28 beaufschlagt.The FIG. 2 1 shows a first embodiment of the printing unit 10 according to the invention with coupled degrees of freedom for the pivoting movement 20 and the linear distance variation 24. In order to stop the printing form cylinder 12 from the inking roller 16 and at the same time to increase the rotational axis distance with respect to the impression cylinder 14, the rocker 18 by means of an actuator 26, which may be concretely, for example, an actuator in the list above, moves. The axis of the plate cylinder 12 is guided in a gate 28 and is acted upon by the force of a return element 30, for example a tension spring against the guideway of the link 28.

Die Figur 3 bezieht sich schematisch auf eine zweite Ausführungsform des erfindungsgemäßen Druckwerks 10 mit gekoppelten Freiheitsgraden für die Schwenkbewegung 20 und die lineare Abstandsvariation 24. Für die Veränderung der absoluten Lage des Druckformzylinders 12 relativ zum Gegendruckzylinder 14 und zur Farbauftragswalze 16 ist ein Kulissenschieber mit Stellglied 26, welches konkret zum Beispiel ein Stellglied in der oben aufgeführten Liste sein kann, vorgesehen. Die Achse des Druckformzylinders 12 ist mit der Kraftwirkung eines Rückstellelements 30, beispielsweise einer Zugfeder, gegen die Kulisse 28 beaufschlagt.The FIG. 3 refers schematically to a second embodiment of the printing unit 10 according to the invention with coupled degrees of freedom for the pivoting movement 20 and the linear distance variation 24. For the change in the absolute position of the plate cylinder 12 relative to the impression cylinder 14 and the inking roller 16 is a sliding block with actuator 26, which concretely For example, an actuator in the list above may be provided. The axis of the plate cylinder 12 is acted upon by the force of a return element 30, such as a tension spring, against the link 28.

In der Figur 4 ist eine Ansicht einer bevorzugten Ausführungsform einer erfindungsgemäßen Druckmaschine 32, genauer einer erfindungsgemäßen Etikettendruckmaschine, in Reihenbauweise, mit in horizontaler Richtung folgenden erfindungsgemäßen Druckwerken 10 gezeigt. Die Etikettendruckmaschine dient der Bearbeitung eines Substrats 34 in Bahnform. Das Substrat wird von einer Substratrolle 36 in einem Zuführteil 38 der Druckmaschine 32 abgerollt und entlang eines Weges durch die Druckmaschine 32 geführt. Die Druckmaschine 32 weist eine Mehrzahl von Gestellmodulen 40, hier beispielhaft drei Gestellmodule 40, auf. In dieser Ausführungsform sind jeweils zwei Druckwerke 10 beziehungsweise ein Druckwerk 10 und ein Bearbeitungswerk 42, hier ein Stanzwerk zum Ausstanzen der Etiketten auf dem bahnförmigen Substrat 34, an einem Gestellmodul 40 aufgenommen. Nach den einzelnen Bearbeitungsstationen folgt ein Auslaufteil 44, in welchem die fertigen Produkte in eine Etikettenrolle 46 aufgewickelt werden. Einlaufteil 38, Gestellmodule 40 und Auslaufteil 44 sind lösbar oder trennbar miteinander verbunden: Die Druckmaschine 32 ist modular aufgebaut.In the FIG. 4 is a view of a preferred embodiment of a printing machine 32 according to the invention, more specifically a label printing machine according to the invention, shown in a row construction, with printing units 10 according to the invention following in the horizontal direction. The label printing machine is used to process a substrate 34 in web form. The substrate is unrolled from a substrate roll 36 in a feed section 38 of the printing machine 32 and guided along a path through the printing press 32. The printing machine 32 has a plurality of frame modules 40, here by way of example three frame modules 40. In this embodiment, two printing units 10 or a printing unit 10 and a processing unit 42, here a punching unit for punching the labels on the web-shaped substrate 34, are received on a rack module 40. After the individual processing stations follows an outlet part 44, in which the finished products are wound up in a label roll 46. Inlet part 38, frame modules 40 and outlet part 44 are detachably or separably connected to each other: The printing machine 32 is modular.

In der Darstellung der einzelnen Druckwerke 10, hier Flexodruckwerke, in der Figur 4 sind neben den Druckformzylindern 12, den Gegendruckzylindern 14 und den Farbauftragswalzen 16 auch Kammerrakel 48 gezeigt. Des Weiteren weisen die Druckwerke 10 in die Druckmaschine 32 diverse Trocknungseinrichtungen auf: Den Gegendruckzylindern 14 sind an dem jeweiligen Druckspalt des Druckwerks 10 nachgeordnet UV-Trocknungseinrichtungen 50 zugeordnet, so dass das bedruckte Substrat 34 direkt auf dem Gegendruckzylinder 14 getrocknet werden kann. Die Druckwerke 10 weisen auch Bahnleitwalzen 52 zur Führung des bahnförmigen Substrats 34 auf. Das fünfte Druckwerk 10 umfasst eine Heißlufttrocknungseinrichtung 54 sowohl für die Oberseite als auch für die Unterseite des Substrats 34. Die Heißlufttrocknungseinrichtung 54 ist dem fünften Druckwerk 10 nachgeordnet, das bahnförmige Substrat wird durch die Heißlufttrocknungseinrichtung 54 geführt. Die einzelnen Druckwerke 10 und das Bearbeitungswerk 42 sind durch ein Aufnahmeelement 56 an den Gestellmodulen 40 der Druckmaschine 32 befestigt. das zweite Druckwerk 10 wird beispielhaft im Rückseitendruck betrieben.In the representation of the individual printing units 10, here flexographic printing, in the FIG. 4 In addition to the printing forme cylinders 12, the impression cylinders 14 and the inking rollers 16 and chamber doctor blade 48 are shown. Furthermore, the printing units 10 have various drying devices in the printing machine 32: The drying cylinders 50 are assigned to the impression cylinders 14 at the respective printing nip of the printing unit 10, so that the printed substrate 34 can be dried directly on the impression cylinder 14. The printing units 10 also have web guide rollers 52 for guiding the web-shaped substrate 34. The fifth printing unit 10 comprises a hot air drying device 54 for both the top and the bottom of the substrate 34. The hot air drying device 54 is disposed downstream of the fifth printing unit 10, the web-shaped substrate is passed through the hot air drying device 54. The individual printing units 10 and the processing unit 42 are fastened by a receiving element 56 to the frame modules 40 of the printing press 32. the second printing unit 10 is operated by way of example in the back pressure.

Die Figur 5 zeigt eine Druckmaschine in einer Maschinenauslegung gemäß Figur 4 in einer Betriebskonfiguration mit geradem und horizontalem Bahnlauf, so dass ein Mehrfarbendruck nass in nass durchgeführt werden kann. Das bahnförmige Substrat 34 wird von der Substratrolle 36 im Zuführteil 38 auf geradem und horizontalem Weg, in geradem und horizontalem Bahnverlauf 58 durch die an den Gestellmodulen 40 aufgenommenen Druckwerke 10 bewegt. Vor dem Bearbeitungswerk 42 und nach dem fünften Druckwerk 10 sind eine Heißlufttrocknungseinrichtung 60 und eine UV-Trocknungseinrichtung 62 vorgesehen. Je nach Art des Trocknungsprozesses der verdruckten Druckfarben kann eine Trocknung des bedruckten Substrats 34 durch Heißluft (Lösungsmittelverdrängung) oder durch UV-Licht (Härtung) erreicht werden. Die fertigen Etiketten werden im Auslaufteil 44 in einer Etikettenrolle 46 gespeichert.The FIG. 5 shows a printing machine in a machine design according to FIG. 4 in a straight and horizontal web run configuration, allowing multi-color printing from wet to wet. The web-shaped substrate 34 is moved by the substrate roller 36 in the feed part 38 in a straight and horizontal path, in a straight and horizontal path 58 through the printing units 10 received on the rack modules 40. Before the processing unit 42 and after the fifth printing unit 10, a hot air drying device 60 and a UV drying device 62 are provided. Depending on the type of drying process of the printing inks, drying of the printed substrate 34 can be achieved by hot air (solvent displacement) or by UV light (curing). The finished Labels are stored in the outlet part 44 in a label roll 46.

In jedem der Druckwerke 10 liegt der jeweilige vom Druckformzylinder 12 und Gegendruckzylindern 14 gebildete Druckspalt, durch welchen das bahnförmige Substrat 34 geführt wird, im oberen Tangentialpunkt des Gegendruckzylinders 14. Hinsichtlich der Formatvariabilität ist - obschon nicht explizit in der Figur 5 gezeigt - die Position der Farbauftragswalze 16 nebst der weiteren Farbwerkskomponenten, insbesondere der Kammerrakel 48, veränderbar ausgeführt, so dass unterschiedliche Drucklängen, beispielsweise durch die Aufnahme von Druckformzylinder 12 mit unterschiedlichen Durchmessern, erreicht werden können. Dabei wird der Druckformzylinder 12 stets im oberen Tangentialpunkt des Gegendruckzylinders 14 an den Gegendruckzylinder 14 angestellt.In each of the printing units 10, the respective printing gap formed by the printing form cylinder 12 and counter-pressure cylinders 14, through which the web-shaped substrate 34 is guided, lies in the upper tangential point of the impression cylinder 14. With regard to the format variability, although not explicitly stated in US Pat FIG. 5 shown - the position of the inking roller 16 along with the other inking unit components, in particular the chambered doctor blade 48, made changeable, so that different print lengths, for example, by the recording of printing forme cylinder 12 with different diameters, can be achieved. In this case, the printing form cylinder 12 is always hired in the upper tangency point of the impression cylinder 14 to the impression cylinder 14.

Die Figur 6 bezieht sich in vier Teilbildern A bis D auf eine Ausführungsform eines Gestellmoduls 40 für zwei erfindungsgemäße Druckwerke 10. Teilbild A der Figur 6 ist eine Ansicht des Gestellmoduls 40: Es umfasst eine steinerne Seitenwand 64, konkret ein einzelner Naturstein, insbesondere ein Granit, oder ein Monolith. Es sind vier Antriebsschnittstellen 66 für die aufzunehmenden Druckwerksmodule vorgesehen. Als mechanische Schnittstelle dient jeweils ein Aufnahmeelement 56. Die steinerne Seitenwand 64 ruht auf zwei Standfußprofilen 68. Das Gestellmodul 40 kann mittels Nivellierelementen 70 ausgerichtet werden. In der Serie der Teilbilder B bis D der Figur 6 ist das Gestellmodul 40 von der Seite gezeigt. Auf der Rückseite der steinernen Seitenwand 64 sind Motoren 72 befestigt, welche über die Antriebsschnittstellen 66 zugänglich sind. Auf einem Aufnahmeelement 56 kann ein Verfahrensmodul 74, welches Druckwerks- oder Bearbeitungswerkskomponenten aufweist, und unter dem Aufnahmeelement 56 kann ein Zusatzkomponentenmodul 76, welches beispielsweise eine Heißlufttrocknungseinrichtung aufweist, lösbar verbindbar am Gestellmodul 40 aufgenommen werden. Das Aufnahmeelement 56 kann zu diesem Zweck zum Beispiel Linearführungen oder Schienen aufweisen, so dass das Verfahrensmodul 74 und/oder das Zusatzkomponentenmodul 76 aufgeschoben werden können.The FIG. 6 in four partial images A to D refers to an embodiment of a frame module 40 for two printing units 10 according to the invention FIG. 6 is a view of the frame module 40: It comprises a stone side wall 64, specifically a single natural stone, in particular a granite, or a monolith. There are four drive interfaces 66 for the male print engine modules provided. The mechanical interface is in each case a receiving element 56. The stone side wall 64 rests on two base profiles 68. The frame module 40 can be aligned by means of leveling elements 70. In the series of drawing files B to D of the FIG. 6 the rack module 40 is shown from the side. On the back of the stone side wall 64 motors 72 are attached, which are accessible via the drive interfaces 66. On a receiving element 56, a process module 74, which has printing unit or processing components, and under the receiving element 56, an additional component module 76, which, for example, a hot air drying device, releasably connectable to the frame module 40 are added. The receiving element 56 may for this purpose, for example, linear guides or rails, so that the process module 74 and / or the additional component module 76 can be postponed.

Die Figur 7 dient in zwei Teilbildern A und B der Erläuterung des Bahnlaufs des Substrats 34 bei Vorderseitendruck und bei Rückseitendruck bei gleichzeitiger UV-Trocknung durch eine Ausführungsform des erfindungsgemäßen Druckwerks 10. Das Substrat 34 wird in Substrattransportrichtung 78 durch das Druckwerk 10 geführt. In Teilbild A der Figur 7 wird der Gegendruckzylinder 14 in einer ersten Drehrichtung 80 für den Vorderseitendruck betrieben. Das um die Bahnleitwalzen 52 geführte bahnförmige Substrat 34 umschlingt dabei teilweise den Gegendruckzylinder 14. Der Gegendruckzylinder 14 bildet mit dem Druckformzylinder 12 einen Druckspalt im oberen Tangentialpunkt. Die auf dem Druckformzylinder 12 aufgenommene Druckform wird mittels der Farbauftragswalze 16, welche eine Farbzufuhr durch die Kammerrakel 48 erhält, eingefärbt. Dem Druckspalt in Substrattransportrichtung 78 nachgeordnet (rechte Auslaufseite) ist eine UV-Trocknungseinrichtung 50, welche das sich noch auf dem Gegendruckzylinder 14 befindenden Substrat 34 trocknet, zugeordnet. In Teilbild B der Figur 7 wird für den Rückseitendruck das Substrat über die Umlenkrollen 82 derart über das Druckwerk 10 geführt, dass der zwischen Druckformzylinder 12 und Gegendruckzylinder 14 aus der im Vergleich zur Konfiguration des Teilbilds A entgegen gesetzten Richtung erreicht wird. Der Gegendruckzylinder 14 rotiert in einer zweiten Drehrichtung 84. Nach dem Druckspalt in Substrattransportrichtung 78 (linke Auslaufseite) ist verglichen zur im Teilbild A gezeigten Situation an einer anderen Position eine UV-Trocknungseinrichtung 50 angeordnet, welche das sich noch auf dem Gegendruckzylinder 14 befindenden Substrat 34 trocknet.The FIG. 7 serves in two partial images A and B, the explanation of the web run of the substrate 34 at front side printing and backside printing with simultaneous UV drying by an embodiment of the printing unit according to the invention 10. The substrate 34 is guided in the substrate transport direction 78 through the printing unit 10. In drawing field A of FIG. 7 the impression cylinder 14 is operated in a first direction of rotation 80 for the front side pressure. The web-shaped substrate 34 guided around the web guide rollers 52 partially wraps around the counter-pressure cylinder 14. The impression cylinder 14 forms a pressure gap in the upper tangency point with the printing-form cylinder 12. The recorded on the printing form cylinder 12 printing plate is colored by means of the inking roller 16, which receives an ink supply by the chambered doctor blade 48. Downstream of the printing nip in the substrate transport direction 78 (right-hand outlet side) is a UV drying device 50, which dries the substrate 34 still located on the impression cylinder 14. In drawing B of the FIG. 7 For backside printing, the substrate is guided via the deflection rollers 82 over the printing unit 10 such that the printing forme cylinder 12 and counterpressure cylinder 14 are reached from the opposite direction compared to the configuration of the partial image A. The counter-pressure cylinder 14 rotates in a second direction of rotation 84. After the printing gap in the substrate transport direction 78 (left exit side), a UV drying device 50 is arranged at a different position compared to the situation shown in the partial image A, which substrate 34 is still on the impression cylinder 14 dries.

In der Figur 8 mit zwei Teilbildern A und B ist der Bahnlauf bei Vorderseitendruck und bei Rückseitendruck bei gleichzeitiger UV-Trocknung in alternativer Anordnung zur Figur 7 durch eine Ausführungsform des erfindungsgemäßen Druckwerks 10 dargestellt. Sowohl die Konfiguration für den Vorderseitendruck im Teilbild A der Figur 8 als auch die Konfiguration für den Rückseitendruck im Teilbild B der Figur 8 entsprechen den Teilbildern A und B der Figur 7. Es werden dieselben Bezugszeichen verwendet, so dass auf die vorhergehende, auf die Figur 7 Bezug nehmende Darstellung verwiesen wird. In der in der Figur 8 gezeigten Ausführungsform ist eine auf den unteren Tangentialpunkt des Gegendruckzylinders 14 gerichtete UV-Trocknungseinrichtung 50 gezeigt. In vorteilhafter Weise kann in dieser Ausführung das Druckwerk 10 sowohl im Vorderseitendruck, wie in Teilbild A der Figur 8 gezeigt, (in erster Drehrichtung 80) als auch im Rückseitendruck, wie im Teilbild B der Figur 8 gezeigt, (in zweiter Drehrichtung 84) mit derselben UV-Trocknungseinrichtung 50 betrieben werden. Dazu wird das bahnförmige Substrat 34 jeweils in derart hinreichend weiter Umschlingung um den Gegendruckzylinder 14 geführt, dass eine direkte Trocknung des Substrats 34 auf dem Gegendruckzylinder 14 im unteren Tangentialpunkt erfolgen kann. Für den Vorderseitendruck sind dabei neben einer der zwei Bahnleitwalzen 52 noch weitere Bahnleitwalzen 86 vorgesehen, während für den Rückseitendruck das bahnförmige Substrat über die andere der zwei Bahnleitwalzen vom Druckwerk 10 abgeführt wird.In the FIG. 8 with two partial images A and B is the web run at front side printing and backside printing with simultaneous UV drying in an alternative arrangement to FIG. 7 represented by an embodiment of the printing unit 10 according to the invention. Both the configuration for the front side print in the part A of the FIG. 8 as well as the configuration for the backside printing in the partial image B of the FIG. 8 correspond to the partial images A and B of FIG. 7 , The same reference numerals are used, so that the previous, the FIG. 7 Reference is made to reference. In the in the FIG. 8 In the embodiment shown, a UV drying device 50 directed at the lower tangential point of the impression cylinder 14 is shown. Advantageously, in this embodiment, the printing unit 10 both in the front side printing, as in Partial picture A of the FIG. 8 shown (in the first direction of rotation 80) and in the backside printing, as in the drawing B of the FIG. 8 shown (in the second direction of rotation 84) are operated with the same UV drying device 50. For this purpose, the web-shaped substrate 34 is guided in each case in such a sufficiently wide loop around the impression cylinder 14 that a direct drying of the substrate 34 can be carried out on the impression cylinder 14 in the lower tangency point. In addition to one of the two web guiding rollers 52, further web guiding rollers 86 are provided for the front side printing, while for the rear side printing the web-shaped substrate is removed from the printing unit 10 via the other of the two web guiding rollers.

Die Figur 9 zeigt in zwei Teilbildern A und B den Bahnlauf bei Vorderseitendruck und bei Rückseitendruck bei gleichzeitiger Heißlufttrocknung in alternativer Anordnung zu den Figuren 7 und 8 durch eine Ausführungsform des erfindungsgemäßen Druckwerks 10. Sowohl die Konfiguration für den Vorderseitendruck im Teilbild A der Figur 9 als auch die Konfiguration für den Rückseitendruck im Teilbild B der Figur 9 entsprechen den Teilbildern A und B der Figur 7. Es werden dieselben Bezugszeichen verwendet, so dass auf die vorhergehende, auf die Figur 7 Bezug nehmende Darstellung verwiesen wird. In der in der Figur 9 gezeigten Ausführungsform in unterhalb des Gegendruckzylinders 14 eine Heißlufttrocknungseinrichtung 54 angeordnet. Diese kann zur beidseitigen Trocknung des bahnförmigen Substrats sowohl beim Vorderseitendruck (Teilbild A der Figur 9) als auch beim Rückseitendruck (Teilbild B der Figur 9) eingesetzt werden. Um den Bahnlauf durch die Heißlufttrocknungseinrichtung 54 zu ermöglichen, sind weitere Bahnleitwalzen 86 vorgesehen. Das bahnförmige Substrat 34 wird der Heißlufttrocknungseinrichtung 54 jeweils von der ursprünglichen Einlaufseite des Substrats 34 in das Druckwerk 10 zugeführt. Anders ausgedrückt, die Heißlufttrocknungseinrichtung 54 wird in beiden Fällen in derselben Richtung oder Orientierung betrieben.The FIG. 9 shows in two partial images A and B the web run at front side pressure and back pressure with simultaneous hot air drying in an alternative arrangement to the FIGS. 7 and 8th by an embodiment of the printing unit 10 according to the invention. Both the configuration for the front side printing in the partial image A of FIG. 9 as well as the configuration for the backside printing in the partial image B of the FIG. 9 correspond to the subpictures A and B of FIG. 7 , The same reference numerals are used, so that the previous, the FIG. 7 Reference is made to reference. In the in the FIG. 9 shown embodiment, below the impression cylinder 14, a hot air drying device 54 is arranged. This can be used for both-sided drying of the web-shaped substrate both at the front side pressure (partial image A of FIG. 9 ) as well as the backside printing (drawing B of the FIG. 9 ) are used. In order to allow the web to pass through the hot air drying device 54, further web guide rollers 86 are provided. The web-shaped substrate 34 is supplied to the hot-air drying device 54 from the original inlet side of the substrate 34 into the printing unit 10, respectively. In other words, the hot-air drying device 54 is operated in the same direction or orientation in both cases.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

1010
Druckwerkprinting unit
1212
DruckformzylinderPlate cylinder
1414
GegendruckzylinderImpression cylinder
1616
FarbauftragswalzeInking roller
1818
Schwingewing
2020
Schwenkbewegungpivotal movement
2222
Linearführunglinear guide
2424
Abstandsvariationdistance variation
2626
Stellgliedactuator
2828
Kulissescenery
3030
RückstellelementReturn element
3232
Druckmaschinepress
3434
Substratsubstratum
3636
Substratrollesubstrate roll
3838
Zuführteilsupply part
4040
Gestellmodulrack module
4242
BearbeitungswerkCutting
4444
Auslaufteiloutlet part
4646
Etikettenrollelabel roll
4848
Kammerrakelchambered doctor blade
5050
UV-TrocknungseinrichtungUV drying device
5252
Bahnleitwalzeweb guide
5454
HeißlufttrocknungseinrichtungHot air drying device
5656
Aufnahmeelementreceiving element
5858
gerader und horizontaler Bahnverlaufstraight and horizontal trajectory
6060
HeißluftendtrocknungHeißluftendtrocknung
6262
UV-EndtrocknungUV final drying
6464
steinerne Seitenwandstone sidewall
6666
AntriebsschnittstelleDrive interface
6868
Standfußprofilstand profile
7070
Nivellierelementleveling
7272
Motorengine
7474
Verfahrensmodulprocess module
7676
ZusatzkomponentenmodulAdditional Components module
7878
SubstrattransportrichtungSubstrate transport direction
8080
erste Drehrichtungfirst direction of rotation
8282
Umlenkrolleidler pulley
8484
zweite Drehrichtungsecond direction of rotation
8686
weitere Bahnleitwalzeanother web guide roller

Claims (15)

  1. Printing unit (10) including a printing form cylinder (12), an impression cylinder (14), and an ink applicator roller (16),
    wherein a printing form received on the printing form cylinder (12) is engageable to be in contact with the ink applicator roller (16),
    wherein the printing form cylinder (12) and the impression cylinder (14) form a printing nip for printing on a substrate (34),
    wherein the impression cylinder (14) and the impression cylinder (12) have a respective axis of rotation,
    wherein the printing unit (10) has a swivel axis that is assigned to the printing form cylinder (12) and aligned to be parallel to the axis of rotation of the impression cylinder (14) for swivelling the printing form cylinder (12), and
    wherein the printing unit (10) includes a rocker (18) with a linear guide (22) for varying the distance between the axes of rotation of the printing form cylinder (12) and of the impression cylinder (14).
  2. Printing unit (10) according to Claim 1,
    characterized in
    that the swivel axis is located inside the contour of the impression cylinder (14).
  3. Printing unit (10) according to Claim 1 or 2,
    characterized in
    that when the printing form cylinder (12) swivels about the swivel axis, the impression cylinder (14) is at least partly located in a segment of a circle delimited by a line over which the axis of rotation of the printing form cylinder (12) passes.
  4. Printing unit (10) according to one of the preceding claims,
    characterized in
    that the printing unit (10) is designed for implementing a flexographic printing process or for implementing a letterpress printing process or for implementing a gravure printing process.
  5. Printing unit (10) according to one of the preceding claims,
    characterized in
    that the spatial position of the axis of rotation of the printing form cylinder (12) is displaceable.
  6. Printing unit (10) according to one of the preceding claims,
    characterized in
    that the printing unit (10) includes a mechanical adjustment system and/or an adjustment actuating system by means of which the swivelling movement and the distance variation of the printing form cylinder (12) are implementable in a coupled way.
  7. Printing unit (10) according to one of the preceding claims,
    characterized in
    that either the printing form cylinder (12) is releasably received in the printing unit (10) and printing form cylinders (12) of different diameters are receivable in the printing unit (10), or intermediate sleeves of different diameters are receivable on the printing form cylinder (12).
  8. Printing unit (10) according to one of the preceding claims,
    characterized in
    that in the printing position, the axes of rotation of the printing form cylinder (12) and of the impression cylinder (14) are located in a perpendicular plane so that the printing nip is located in the upper tangent point of the impression cylinder (14).
  9. Printing unit (10) according to one of the preceding claims,
    characterized in
    that the printing unit (10) comprises a drying device (50) that acts on a substrate (34) located on the impression cylinder (14).
  10. Printing unit (10) according to one of the preceding claims,
    characterized in
    that for front-side printing, the printing unit (10) is operatable in a first direction of rotation (80) of the impression cylinder (14) and for rear-side printing, the printing unit (10) is operatable in a second direction of rotation (84) opposite to the first direction of rotation of the impression cylinder (14).
  11. Printing press (32),
    characterized by
    at least one printing unit (10) according to one of the preceding claims.
  12. Printing press (32) according to Claim 11 for printing on a web-shaped substrate (84),
    characterized in
    that the printing press (32) includes transporting means for moving the web-shaped substrate (34) through the printing press (32), the path of the web-shaped substrate being straight and passing through a plurality of printing units (10) according to one of the preceding claims 1 to 10.
  13. Printing press (32) according to Claim 11 or 12,
    characterized in
    that the printing press includes receiving elements (56) for alternately receiving modules (74, 76) for different printing processes or for processing the substrate in a releasable way and/or that the printing unit (10) is received by means of a bearing element in a supporting element (64) that is at least partially made of rock.
  14. Method of producing labels or self-adhesive labels in a printing press (32),
    characterized in
    that a printing press (32) according to one of the preceding claims 11 to 13 is operated and that a web-shaped substrate (34) suitable for producing labels or self-adhesive labels is processed.
  15. Method of producing labels or self-adhesive labels in a printing press (32) according to Claim 14,
    characterized in
    that a printing press (32) according to Claim 12 is operated and the individual colour separations of a multi-colour print are printed wet on wet into each other.
EP08105299A 2007-09-25 2008-09-11 Printing unit and printing press Not-in-force EP2042315B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007045876A DE102007045876A1 (en) 2007-09-25 2007-09-25 Printing unit and printing press

Publications (3)

Publication Number Publication Date
EP2042315A2 EP2042315A2 (en) 2009-04-01
EP2042315A3 EP2042315A3 (en) 2011-07-20
EP2042315B1 true EP2042315B1 (en) 2012-11-14

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ID=40260532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08105299A Not-in-force EP2042315B1 (en) 2007-09-25 2008-09-11 Printing unit and printing press

Country Status (5)

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US (1) US8505450B2 (en)
EP (1) EP2042315B1 (en)
CN (1) CN101396900B (en)
DE (1) DE102007045876A1 (en)
DK (1) DK2042315T3 (en)

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WO2016011359A1 (en) * 2014-07-17 2016-01-21 Mark Andy, Inc. Method and apparatus for a movable and connectable inkjet head in a web printing press
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Also Published As

Publication number Publication date
DE102007045876A1 (en) 2009-04-09
US8505450B2 (en) 2013-08-13
EP2042315A3 (en) 2011-07-20
EP2042315A2 (en) 2009-04-01
US20090078135A1 (en) 2009-03-26
CN101396900A (en) 2009-04-01
CN101396900B (en) 2012-02-22
DK2042315T3 (en) 2013-01-07

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