EP1250228B1 - Printing unit - Google Patents

Printing unit Download PDF

Info

Publication number
EP1250228B1
EP1250228B1 EP00991084A EP00991084A EP1250228B1 EP 1250228 B1 EP1250228 B1 EP 1250228B1 EP 00991084 A EP00991084 A EP 00991084A EP 00991084 A EP00991084 A EP 00991084A EP 1250228 B1 EP1250228 B1 EP 1250228B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
screen
printing
screen printing
section
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.)
Expired - Lifetime
Application number
EP00991084A
Other languages
German (de)
French (fr)
Other versions
EP1250228A1 (en
Inventor
Johannes Georg Schaede
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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
Priority claimed from DE10025999A external-priority patent/DE10025999C2/en
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1250228A1 publication Critical patent/EP1250228A1/en
Application granted granted Critical
Publication of EP1250228B1 publication Critical patent/EP1250228B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F15/00Screen printers
    • B41F15/08Machines
    • B41F15/0804Machines for printing sheets
    • B41F15/0809Machines for printing sheets with cylindrical or belt-like screens

Definitions

  • the invention relates to a printing unit according to the preamble of claim 1.
  • a printing unit for a rotary printing press is known from EP 07 23 864 B1, which a screen printing cylinder and a printing nip formed by two cylinders, in which a printing material is printed.
  • a screen printing cylinder of this printing unit forms a printing nip together with one Impression cylinder, which has circumferential sections with a reduced radius, in which Bow grippers are arranged.
  • a squeegee device is located inside the screen printing cylinder arranged towards the printing nip, against the screen of the screen printing cylinder presses and passes paint through. To avoid deformation of the screen, if a circumferential section with a reduced radius passes through the printing nip is one Mechanism provided that moves the squeegee device from the screen at these times.
  • This known printing unit is only suitable for single-sided printing.
  • the mechanism to move the squeegee device is expensive.
  • JP 11-129599 A discloses a screen printing machine with two screen printing cylinders and a sheet transfer cylinder.
  • EP 0 949 069 A1 describes an offset printing machine with interacting Transfer cylinders, which can be preceded by a screen printing unit.
  • the invention has for its object to provide a printing unit.
  • the advantages that can be achieved with the invention are, in particular, that the Printing unit perfect and silkscreen in register with each other enables a printing process.
  • the screen printing cylinder is particularly characterized its simple structure.
  • the printing unit it is provided according to the invention that at least one of the two Screen printing cylinder indirectly, via a transfer cylinder, a first side of the Printed substrate, this transfer cylinder the second of the two Represents pressure gap forming cylinder and thereby at the same time as an impression cylinder for the printing of the second side of the printing material can serve.
  • the first of the two cylinders forming the pressure gap is preferably also one Transfer cylinder, resulting in a substantially symmetrical structure of the Printing unit with the same printing properties on both sides of the substrate results.
  • Allowing passport-containing printing is preferably at least one of the two Pressure gap forming cylinder with a holding device for the sheet-like Substrates.
  • Such a device can be an actuator that the doctor device when the specified circumferential section in front of the doctor device radially inward.
  • the device is a support element which is located on the Screen printing cylinder extends axially in the region of the defined circumferential section and for Interception of a pressure exerted radially outwards by the doctor device on the defined circumferential section serves.
  • the doctor device is preferably with Provide leading and trailing edges for the doctor device, which are at an angle to one Generating the peripheral surface of the screen cylinder. Because the doctor device necessarily runs parallel to such a generator, it runs Squeegee device in each case not on its entire extent, but only selectively the support element on or from this, and possibly thereby on the Braking forces acting on screen printing cylinders remain small and are spread over one finite section of the circumference of the screen printing cylinder.
  • Fig. 1 shows a schematic view, e.g. B. a sheet-fed rotary printing press in which the printing unit 4 is used, for example.
  • the printing press includes one Sheet feeder 1 with a sheet stack 2, of which automatically on one constant level held top sheet individually or scaled by one Belt conveyor 3 of the printing unit 4 are fed, which the sheets individually takes over, printed and outputs to a chain conveyor 6, which in the case of Multi-color printing further printing units in the manner of printing unit 4 or, as shown here feeds a delivery stack 5 directly.
  • the sheets pass through the printing unit 4 from top to bottom; its structure is in Fig. 2 in shown on a larger scale.
  • Two transport cylinders 7, of which the upper one is only partially shown in the figure, are each provided at a section 8 of their circumference with bow grippers to printing sheets with register to their edge from the first belt conveyor 3 übemehmen.
  • the lower of the two transport cylinders 7 rolls in contact with a first one Transfer cylinder 9 from.
  • the transfer cylinder 9 is, for. B. as a blanket cylinder 9 formed and is also on a portion 11 of its circumference with a Gripper bridge for taking over the sheets from the lower transport cylinder 7 fitted.
  • the first blanket cylinder 9 also rolls into contact with a first one Screen printing cylinder 12, whereby a print pattern is transferred to it, which in the gap 13 between the transport cylinder 7 and the first blanket cylinder 9 on one funded sheet is printed.
  • On the structure of the first screen printing cylinder 12 is discussed in more detail later.
  • one sheet to be printed After passing through the nip 13, one sheet to be printed reaches a second one Gap 14 between the first blanket cylinder 9 and a second, also as Blanket cylinder 16 formed transfer cylinder 16.
  • this gap 14 is the sheet on its second side with one of a second screen printing cylinder 17 printed the second blanket cylinder 16 transferred pattern.
  • the second blanket cylinder 16 has no gripper bridge; instead, he orders in a section 18 of its circumference over a channel that the passage of the Gripper bridge 11 of the blanket cylinder 9 through the gap 14 allows.
  • the various cylinders 7; 9; 16; 12; 17 are in each case on their end faces Side frames 19; 21; 22 stored. These side frames 19; 21; 22 exist at in Fig. 2 shown printing unit each from a central module, which the Transport cylinder 7 and the two blanket cylinders 9; 16 bears, as well as two side Modules, each one of the screen printing cylinders 12; 17 wear.
  • the face plates of a module are firmly connected to each other so that they are rigid Form frame unit, which together with the screen printing cylinder 12 or carried by them 17 is removable from the printing unit 4.
  • Such a module can then, for. B. by a another module to be replaced, which a form cylinder z. B. for conventional Contains flat offset printing or the like. In this way, the printing unit conveniently adapt to documents where different needs different printing techniques for the front and back are required, register print in one go.
  • 3a, 3b each show a portion of the first screen printing cylinder 12 in the Environment of the gap that this forms with the first blanket cylinder 9.
  • This one Structures described are also in the same way for the structure of the second screen printing cylinder 17 usable.
  • the screen printing cylinder 12 has a support ring 20 at its axial ends the outer periphery of a sieve 23, for. B. from silk or polyamide gauze or Bronze wire mesh, is stretched.
  • a doctor blade 24 arranged, its position in the radial direction by a curved body, here one on the end faces of the screen printing cylinder 12 formed guide slot 26, controlled through which a cylindrical guide extension 27 of the doctor blade 24 extends.
  • the guide extension 27 is on both sides in the direction the axes of rotation of the two cylinders 9; 12 connecting line 28 slidably mounted.
  • 3a shows the doctor blade 24 in a position in which the holding device 29 of the Blanket cylinder 9 the gap between the two cylinders 9; 12 passes through.
  • the screen 23 has a radially inward indented section 31.
  • the guide slot 26 does not have one in the figure fully illustrated, concentric with the cylindrical outer surface of the screen 23 arcuate section 33 and an inwardly indented section 32, the course of which corresponds to section 31.
  • section 32 The course of section 32 is chosen so that when section 32 rotates as screen printing cylinder 12 rotates Guide extension 27 moved past, the squeegee 24 withdrawn radially inward as far is that there is only minimal pressure on the screen 23, which does not result in any significant deformation of the screen 23 in section 31, or that it causes contact completely loses with the screen 23 and thus does not exert any pressure on the section 31 thereof, that could deform it and damage it during operation.
  • 3b shows the position of the squeegee 24 after the section 32 has the guide extension 27 happened.
  • the arcuate section 33 of the guide slot 26 holds the Doctor blade 24 pressed against the inside of the screen 23, so that one on the doctor blade 24 Color 34 is pressed through the open areas of the screen 23 and on is transferred to the blanket cylinder 9 in this way.
  • Fig. 4 shows a modification of the screen printing cylinder 12 from Fig. 3a, b. Elements that correspond to those of the screen printing cylinder 12 described above, are the same Reference numerals are used and will not be described again.
  • the construction of the Screen printing cylinder 12 from FIG. 4 is due to the omission of the guide slot 26 simplified.
  • the doctor blade 24 is against by a spring device (not shown) Sieve 23 held down. The doctor blade 24 thus remains in contact with the screen 23, if the indented during the rotational movement of the screen printing cylinder 12 Section 31 passes the doctor blade 24. At the passage of the indented section 31 in front of the doctor blade 24 the latter against the force of the spring device to the axis of Screen printing cylinder 12 pushed back.
  • the support element 36 here has the shape of an Cross-section of continuously curved shell or gutter, e.g. B. from sheet metal or a rigid plastic, and is at its two axial ends on the front sides of the Screen printing cylinder 12 anchored.
  • the support element 36 can be adjustable in the radial direction (arrow 37) adjust the tension of the sieve 23.
  • the support element 36 each with the holding device 29 of the blanket cylinder 9 meets and thus in the area of section 31, no ink can be taken from the screen printing cylinder 12
  • the support element 36 is expediently designed as a closed plate that no ink pass through and get onto the exterior of the screen printing cylinder 12 can.
  • This screen printing cylinder 17 is cylindrical over its entire circumference, without an indented section. It is therefore suitable for interacting with a second cylinder which has no radially outwardly projecting elements, such as holding devices for a printing material.
  • the second screen printing cylinder 17 can have the construction shown in FIG. 5. Therefore, the reference numerals 17 are used below for the screen printing cylinder and 16 for the cylinder interacting with it.
  • a doctor blade 24 is arranged in the interior of the screen printing cylinder 17 shown here, which strokes a pasty ink 34 through the screen 23 stretched on the screen printing cylinder 17 and thereby exerts a pressure radially outwards on the Sieve 23 exercises.
  • the screen 23 touches the surface of the blanket cylinder 16 during the common rotation of the screen printing cylinder 17 and the blanket cylinder 16, the latter supplies a counterpressure which prevents the screen 23 from being deformed by the doctor blade 24.
  • a support element 39 is arranged radially inside the screen 23, which extends in the circumferential direction of the screen printing cylinder 17 over a section 41 of the screen 23 extends, which corresponds to the expansion of the channel 38 on the blanket cylinder 16.
  • the support element 39 is a closed plate made of metal or rigid plastic which is curved in the form of a cylinder segment.
  • the support element 39 is attached radially inside the sieve 23, and is leading End 42 and trailing end 43 of the screen 23 overlap each other in the Supporting element 39 supported section 41. In this way, the sensitive Connection between the two ends 42; 43, the z. B. can be welded before Contact with the doctor blade 24 and thus protected against premature wear.
  • a spring element for an adjustment of the doctor blade 24 in the radial direction can be provided.
  • the construction the screen printing cylinder 17 can be further simplified by clicking on a Adjustability of the doctor blade 24 is dispensed with, so that the fluctuations in the radius alone by an elastic deformation of the elastic lip 44 touching the screen 23 Doctor blade 24 are compensated.
  • edges 46; 47; preferably the edges 46; 47 each have a helix with a Pitch that is a multiple of the axial length of the screen printing cylinder 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)

Abstract

A printing unit includes two screen-printing cylinders and two transfer cylinders that cooperate with the screen-printing cylinders and which define a printing gap or nip. At least one of the screen-printing cylinders has a screen surface and an interior doctor blade. A support element is provided for handling radially outwardly directed pressure exerted by the doctor blade on the screen surface in one section of the screen surface.

Description

Die Erfindung betrifft eine Druckeinheit gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a printing unit according to the preamble of claim 1.

Aus der EP 07 23 864 B1 ist eine Druckeinheit für eine Rotationsdruckmaschine bekannt, die einen Siebdruckzylinder und einen von zwei Zylindern gebildeten Druckspalt, in dem ein Bedruckstoff bedruckt wird, aufweist.A printing unit for a rotary printing press is known from EP 07 23 864 B1, which a screen printing cylinder and a printing nip formed by two cylinders, in which a printing material is printed.

Ein Siebdruckzylinder dieser Druckeinheit bildet einen Druckspalt zusammen mit einem Gegendruckzylinder, der Umfangsabschnitte mit verringertem Radius aufweist, in denen Bogengreifer angeordnet sind. Im Innern des Siebdruckzylinders ist eine Rakeleinrichtung dem Druckspalt zugewandt angeordnet, die gegen das Sieb des Siebdruckzylinders drückt und Farbe hindurchstreicht. Um eine Verformung des Siebes zu vermeiden, wenn ein Umfangsabschnitt mit verringertem Radius den Druckspalt durchläuft, ist ein Mechanismus vorgesehen, der zu diesen Zeiten die Rakeleinrichtung vom Sieb abrückt.A screen printing cylinder of this printing unit forms a printing nip together with one Impression cylinder, which has circumferential sections with a reduced radius, in which Bow grippers are arranged. A squeegee device is located inside the screen printing cylinder arranged towards the printing nip, against the screen of the screen printing cylinder presses and passes paint through. To avoid deformation of the screen, if a circumferential section with a reduced radius passes through the printing nip is one Mechanism provided that moves the squeegee device from the screen at these times.

Diese bekannte Druckeinheit ist nur zum einseitigen Drucken geeignet. Der Mechanismus zum Abrücken der Rakeleinrichtung ist aufwendig.This known printing unit is only suitable for single-sided printing. The mechanism to move the squeegee device is expensive.

Die JP 11-129599 A offenbart eine Siebdruckmaschine mit zwei Siebdruckzylindern und einem bogenführenden Übertragungszylinder.JP 11-129599 A discloses a screen printing machine with two screen printing cylinders and a sheet transfer cylinder.

Die EP 0 949 069 A1 beschreibt eine Offsetdruckmaschine mit zusammenwirkenden Übertragungszylindem, denen eine Siebdruckeinheit vorgeschaltet sein kann.EP 0 949 069 A1 describes an offset printing machine with interacting Transfer cylinders, which can be preceded by a screen printing unit.

Der Erfindung liegt die Aufgabe zugrunde, eine Druckeinheit zu schaffen.The invention has for its object to provide a printing unit.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. The object is achieved by the features of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass die Druckeinheit Schön- und Widerdruck im Siebdruckverfahren passerhaltig zueinander in einem Druckvorgang ermöglicht. Der Siebdruckzylinder zeichnet sich besonders durch seinen einfachen Aufbau aus.The advantages that can be achieved with the invention are, in particular, that the Printing unit perfect and silkscreen in register with each other enables a printing process. The screen printing cylinder is particularly characterized its simple structure.

Bei der Druckeinheit ist erfindungsgemäß vorgesehen, dass wenigstens einer der zwei Siebdruckzylinder indirekt, über einen Übertragungszylinder, eine erste Seite des Bedruckstoffs bedruckt, wobei dieser Übertragungszylinder den zweiten der zwei den Druckspalt bildenden Zylinder darstellt und dadurch zugleich als Gegendruckzylinder für das Bedrucken der zweiten Seite des Bedruckstoffs dienen kann.In the printing unit, it is provided according to the invention that at least one of the two Screen printing cylinder indirectly, via a transfer cylinder, a first side of the Printed substrate, this transfer cylinder the second of the two Represents pressure gap forming cylinder and thereby at the same time as an impression cylinder for the printing of the second side of the printing material can serve.

Vorzugsweise ist auch der erste der zwei den Druckspalt bildenden Zylinder ein Übertragungszylinder, wodurch sich ein im wesentlichen symmetrischer Aufbau der Druckeinheit mit gleichen Druckeigenschaften auf beiden Seiten des Bedruckstoffes ergibt.The first of the two cylinders forming the pressure gap is preferably also one Transfer cylinder, resulting in a substantially symmetrical structure of the Printing unit with the same printing properties on both sides of the substrate results.

Um einen exakten, auch in Bezug auf den Rand eines bogenartigen Bedruckstoffes passerhaltigen Druck zu ermöglichen, ist vorzugsweise wenigstens einer der zwei den Druckspalt bildenden Zylinder mit einer Halteeinrichtung für die bogenartigen Bedruckstoffe ausgestattet.An exact, also with regard to the edge of a sheet-like printing material Allowing passport-containing printing is preferably at least one of the two Pressure gap forming cylinder with a holding device for the sheet-like Substrates.

Um Farbe auf die Siebdruckzylinder aufbringen zu können, ist zweckmäßigerweise in deren Inneren jeweils eine Rakeleinrichtung zum Hindurchdrücken von Farbe durch ein an dem Siebzylinder montiertes Sieb vorgesehen. Außerdem ist vorteilhafterweise eine Einrichtung zum Verhindern einer Verformung des Siebs durch die dagegen drückende Rakeleinrichtung auf einem festgelegten Umfangsabschnitt des Siebes vorgesehen. Diese Einrichtung verhindert, dass das Sieb durch ein Andrücken an die Halteeinrichtung oder ein Hineindrücken in einen zu der Halteeinrichtung komplementären Kanal des jeweils anderen den Druckspalt bildenden Zylinders zu stark verformt und dadurch zu schnell abgenutzt oder beschädigt wird. In order to be able to apply color to the screen printing cylinders, is expediently in the interior of which each have a doctor device for pushing paint through sieve mounted on the sieve cylinder. It is also advantageous Device for preventing the strainer from being deformed by the pushing device Doctor device provided on a fixed peripheral portion of the screen. This device prevents the screen from being pressed against the holding device or pressing into a channel of the holding device which is complementary to the holding device each other the cylinder forming the pressure gap deformed too much and thereby too quickly worn out or damaged.

Eine solche Einrichtung kann ein Stellorgan, das die Rakeleinrichtung bei Durchgang des festgelegten Umfangsabschnittes vor der Rakeleinrichtung radial einwärts rückt. Gemäß dem zweiten Aspekt der Erfindung ist die Einrichtung ein Stützelement, das sich am Siebdruckzylinder im Bereich des festgelegten Umfangsabschnitts axial erstreckt und zum Abfangen eines von der Rakeleinrichtung radial nach außen ausgeübten Drucks auf den festgelegten Umfangsabschnitt dient.Such a device can be an actuator that the doctor device when the specified circumferential section in front of the doctor device radially inward. According to the second aspect of the invention, the device is a support element which is located on the Screen printing cylinder extends axially in the region of the defined circumferential section and for Interception of a pressure exerted radially outwards by the doctor device on the defined circumferential section serves.

Um Gleichlaufstörungen des Siebdruckzylinders zu vermeiden, wenn die Rakeleinrichtung auf das Stützelement trifft und/oder sich von diesem trennt, ist letzteres vorzugsweise mit Auf- und Ablaufkanten für die Rakeleinrichtung versehen, die unter einem Winkel zu einer Erzeugenden der Umfangsfläche des Siebzylinders verlaufen. Da die Rakeleinrichtung notwendigerweise parallel zu einer solchen Erzeugenden verläuft, läuft die Rakeleinrichtung jeweils nicht auf ihrer gesamten Ausdehnung, sondern nur punktuell auf das Stützelement auf oder von diesem ab, und eventuell dadurch auf den Siebdruckzylinder wirkende Bremskräfte bleiben klein und verteilen sich auf einen endlichen Abschnitt des Umfangs des Siebdruckzylinders.To avoid synchronism of the screen printing cylinder when the doctor device meets and / or separates from the support element, the latter is preferably with Provide leading and trailing edges for the doctor device, which are at an angle to one Generating the peripheral surface of the screen cylinder. Because the doctor device necessarily runs parallel to such a generator, it runs Squeegee device in each case not on its entire extent, but only selectively the support element on or from this, and possibly thereby on the Braking forces acting on screen printing cylinders remain small and are spread over one finite section of the circumference of the screen printing cylinder.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben.Embodiments of the invention are shown in the drawings and are in following described in more detail.

Es zeigen:

Fig. 1
eine schematische Darstellung einer Druckmaschine mit einer Druckeinheit;
Fig. 2
die Druckeinheit der Maschine aus Fig. 1 in einem schematischen Schnitt;
Fig. 3a und Fig. 3b
jeweils einen Ausschnitt eines Siebdruckzylinders und eines mit diesem zusammenwirkenden Übertragungszylinders in zwei 4 Phasen der Drehbewegung der Zylinder;
Fig. 4
eine Abwandlung des Siebdruckzylinders aus Fig. 3a;
Fig. 5
einen Ausschnitt eines Siebdruckzylinders und eines Übertragungszylinders gemäß einer abgewandelten Ausgestaltung.
Show it:
Fig. 1
a schematic representation of a printing press with a printing unit;
Fig. 2
the printing unit of the machine of Figure 1 in a schematic section.
3a and 3b
a section of a screen printing cylinder and a transfer cylinder interacting with it in two 4 phases of the rotary movement of the cylinder;
Fig. 4
a modification of the screen printing cylinder of Fig. 3a;
Fig. 5
a section of a screen printing cylinder and a transfer cylinder according to a modified embodiment.

Fig. 1 zeigt eine schematische Ansicht, z. B. einer Bogenrotationsdruckmaschine, in der die Druckeinheit 4 beispielsweise eingesetzt ist. Die Druckmaschine umfasst einen Bogenanleger 1 mit einem Bogenstapel 2, von dessen automatisch auf einem gleichbleibenden Niveau gehaltener Oberseite Bogen einzeln oder geschuppt von einem Bandförderer 3 der Druckeinheit 4 zugeführt werden, welche die Bögen einzeln übernimmt, bedruckt und an einen Kettenförderer 6 ausgibt, der diese im Fall von Mehrfarbdruck weiteren Druckeinheiten in Art der Druckeinheit 4 oder, wie hier gezeigt, direkt einem Auslagestapel 5 zuführt.Fig. 1 shows a schematic view, e.g. B. a sheet-fed rotary printing press in which the printing unit 4 is used, for example. The printing press includes one Sheet feeder 1 with a sheet stack 2, of which automatically on one constant level held top sheet individually or scaled by one Belt conveyor 3 of the printing unit 4 are fed, which the sheets individually takes over, printed and outputs to a chain conveyor 6, which in the case of Multi-color printing further printing units in the manner of printing unit 4 or, as shown here feeds a delivery stack 5 directly.

Die Bogen durchlaufen die Druckeinheit 4 von oben nach unten; ihr Aufbau ist in Fig. 2 in größerem Maßstab dargestellt.The sheets pass through the printing unit 4 from top to bottom; its structure is in Fig. 2 in shown on a larger scale.

Zwei Transportzylinder 7, von denen die obere in der Figur nur teilweise dargestellt ist, sind jeweils an einem Abschnitt 8 ihres Umfangs mit Bogengreifern versehen, um zu bedruckende Bogen passerhaltig zu deren Rand von dem ersten Bandförderer 3 zu übemehmen. Der untere der zwei Transportzylinder 7 rollt in Kontakt mit einem ersten Übertragungszylinder 9 ab. Der Übertragungszylinder 9 ist, z. B. als Gummituchzylinder 9 ausgebildet und ist ebenfalls an einem Abschnitt 11 seines Umfangs mit einer Greiferbrücke zum Übernehmen der Bogen von dem unteren Transportzylinder 7 ausgestattet. Der erste Gummituchzylinder 9 rollt ferner in Kontakt mit einem ersten Siebdruckzylinder 12 ab, wodurch auf ihn ein Druckmuster übertragen wird, welches in dem Spalt 13 zwischen Transportzylinder 7 und erstem Gummituchzylinder 9 auf einen geförderten Bogen gedruckt wird. Auf den Aufbau des ersten Siebdruckzylinders 12 wird später noch genauer eingegangen.Two transport cylinders 7, of which the upper one is only partially shown in the figure, are each provided at a section 8 of their circumference with bow grippers to printing sheets with register to their edge from the first belt conveyor 3 übemehmen. The lower of the two transport cylinders 7 rolls in contact with a first one Transfer cylinder 9 from. The transfer cylinder 9 is, for. B. as a blanket cylinder 9 formed and is also on a portion 11 of its circumference with a Gripper bridge for taking over the sheets from the lower transport cylinder 7 fitted. The first blanket cylinder 9 also rolls into contact with a first one Screen printing cylinder 12, whereby a print pattern is transferred to it, which in the gap 13 between the transport cylinder 7 and the first blanket cylinder 9 on one funded sheet is printed. On the structure of the first screen printing cylinder 12 is discussed in more detail later.

Nach Durchgang durch den Spalt 13 erreicht ein zu bedruckender Bogen einen zweiten Spalt 14 zwischen dem ersten Gummituchzylinder 9 und einem zweiten, ebenfalls als Gummituchzylinder 16 ausgebildeten Übertragungszylinder 16. In diesem Spalt 14 wird der Bogen auf seiner zweiten Seite mit einem von einem zweiten Siebdruckzylinder 17 auf den zweiten Gummituchzylinder 16 übertragenen Muster bedruckt. After passing through the nip 13, one sheet to be printed reaches a second one Gap 14 between the first blanket cylinder 9 and a second, also as Blanket cylinder 16 formed transfer cylinder 16. In this gap 14 is the sheet on its second side with one of a second screen printing cylinder 17 printed the second blanket cylinder 16 transferred pattern.

Der zweite Gummituchzylinder 16 besitzt keine Greiferbrücke; stattdessen verfügt er in einem Abschnitt 18 seines Umfangs über einen Kanal, der den Durchgang der Greiferbrücke 11 des Gummituchzylinders 9 durch den Spalt 14 ermöglicht.The second blanket cylinder 16 has no gripper bridge; instead, he orders in a section 18 of its circumference over a channel that the passage of the Gripper bridge 11 of the blanket cylinder 9 through the gap 14 allows.

Da die zwei Gummituchzylinder 9; 16 und mit ihnen auch die Siebdruckzylinder 12; 17 gekoppelt rotieren können, ist es durch eine manuelle oder automatische Feineinstellung der auf den Siebdruckzylindern 12; 17 montierten Druckformen relativ zu einander in axialer Richtung und in Umfangsrichtung der Zylinder 9; 16; 12; 17 auf einfache Weise möglich, eine exakte und dauerhafte Passerhaltigkeit des Drucks auf Vorder- und Rückseite der Bögen zu erreichen.Since the two blanket cylinders 9; 16 and with them also the screen printing cylinders 12; 17 coupled rotation, it is through a manual or automatic fine adjustment that on the screen printing cylinders 12; 17 mounted printing forms in relation to each other axial direction and in the circumferential direction of the cylinder 9; 16; 12; 17 in a simple way possible an exact and permanent registration of the print on front and Reach the back of the arches.

Die diversen oben erwähnten Zylinder 7; 9; 16; 12; 17 sind jeweils an ihren Stirnseiten in Seitengestellen 19; 21; 22 gelagert. Diese Seitengestelle 19; 21; 22 bestehen bei der in Fig. 2 gezeigten Druckeinheit jeweils aus einem zentralen Modul, welches die Transportzylinder 7 und die zwei Gummituchzylinder 9; 16 trägt, sowie zwei seitliche Modulen, die jeweils einen der Siebdruckzylinder 12; 17 tragen. Die stimseitigen Platten eines Moduls sind jeweils fest miteinander verbunden, so dass sie eine starre Rahmeneinheit bilden, die mitsamt dem von ihnen getragenen Siebdruckzylinder 12 bzw. 17 von der Druckeinheit 4 abnehmbar ist. Ein solches Modul kann dann z. B. durch ein anderes Modul ersetzt werden, welches einen Formzylinder z. B. für herkömmlichen Flach-Offsetdruck oder dergleichen enthält. Auf diese Weise lässt sich die Druckeinheit bequem unterschiedlichen Bedürfnissen anpassen, um Dokumente, bei denen unterschiedliche Drucktechniken für Vorder- und Rückseite verlangt werden, passerhaltig in einem Durchgang zu drucken. The various cylinders 7; 9; 16; 12; 17 are in each case on their end faces Side frames 19; 21; 22 stored. These side frames 19; 21; 22 exist at in Fig. 2 shown printing unit each from a central module, which the Transport cylinder 7 and the two blanket cylinders 9; 16 bears, as well as two side Modules, each one of the screen printing cylinders 12; 17 wear. The face plates of a module are firmly connected to each other so that they are rigid Form frame unit, which together with the screen printing cylinder 12 or carried by them 17 is removable from the printing unit 4. Such a module can then, for. B. by a another module to be replaced, which a form cylinder z. B. for conventional Contains flat offset printing or the like. In this way, the printing unit conveniently adapt to documents where different needs different printing techniques for the front and back are required, register print in one go.

Beispiele für den Aufbau der Siebdruckzylinder werden nachfolgend mit Bezug auf die Fig. 3a, 3b sowie 4 beschrieben.Examples of the structure of the screen printing cylinder are given below with reference to the 3a, 3b and 4 described.

Die Fig. 3a, 3b zeigen jeweils einen Teilbereich des ersten Siebdruckzylinders 12 in der Umgebung des Spalts, den dieser mit dem ersten Gummituchzylinder 9 bildet. Die hier beschriebenen Strukturen sind allerdings auch in gleicher Weise für den Aufbau des zweiten Siebdruckzylinders 17 brauchbar.3a, 3b each show a portion of the first screen printing cylinder 12 in the Environment of the gap that this forms with the first blanket cylinder 9. This one Structures described are also in the same way for the structure of the second screen printing cylinder 17 usable.

Der Siebdruckzylinder 12 besitzt jeweils an seinen axialen Enden einen Stützring 20, auf dessen Außenumfang ein Sieb 23, z. B. aus Seiden- oder Polyamidgaze oder Bronzedrahtgeflecht, aufgespannt ist. Im Innern des Siebdruckzylinders 12 ist eine Rakel 24 angeordnet, dessen Position in radialer Richtung durch einen Kurvenkörper, hier einen an den Stirnseiten des Siebdruckzylinders 12 ausgebildeten Führungsschlitz 26, gesteuert ist, durch den ein zylindrischer Führungsfortsatz 27 der Rakel 24 hindurchgreift. Außerhalb des Siebdruckzylinders 12 ist der Führungsfortsatz 27 beiderseits in Richtung der die Drehachsen der zwei Zylinder 9; 12 verbindenden Linie 28 verschiebbar gelagert. Fig. 3a zeigt die Rakel 24 in einer Stellung, in der die Halteeinrichtung 29 des Gummituchzylinders 9 den Spalt zwischen den zwei Zylindern 9; 12 durchläuft. Gegenüber der Halteeinrichtung 29 weist das Sieb 23 einen radial nach innen eingebuchteten Abschnitt 31 auf. Der Führungsschlitz 26 weist einen in der Figur nicht vollständig dargestellten, zur zylindrischen Außenfläche des Siebes 23 konzentrischen kreisbogenförmigen Abschnitt 33 und einen nach innen eingebuchteten Abschnitt 32 auf, dessen Verlauf dem Abschnitt 31 entspricht. Der Verlauf des Abschnitts 32 ist so gewählt, dass, wenn sich der Abschnitt 32 bei der Rotation des Siebdruckzylinders 12 am Führungsfortsatz 27 vorbeibewegt, die Rakel 24 so weit radial nach innen zurückgezogen wird, dass es nur noch einen minimalen Druck auf das Sieb 23 ausübt, der zu keiner nennenswerten Verformung des Siebs 23 im Abschnitt 31 führt, oder dass es den Kontakt mit dem Sieb 23 gänzlich verliert und somit keinen Druck auf dessen Abschnitt 31 ausübt, der diesen verformen und im Laufe des Betriebs beschädigen könnte.The screen printing cylinder 12 has a support ring 20 at its axial ends the outer periphery of a sieve 23, for. B. from silk or polyamide gauze or Bronze wire mesh, is stretched. Inside the screen printing cylinder 12 is a doctor blade 24 arranged, its position in the radial direction by a curved body, here one on the end faces of the screen printing cylinder 12 formed guide slot 26, controlled through which a cylindrical guide extension 27 of the doctor blade 24 extends. Outside the screen printing cylinder 12, the guide extension 27 is on both sides in the direction the axes of rotation of the two cylinders 9; 12 connecting line 28 slidably mounted. 3a shows the doctor blade 24 in a position in which the holding device 29 of the Blanket cylinder 9 the gap between the two cylinders 9; 12 passes through. Compared to the holding device 29, the screen 23 has a radially inward indented section 31. The guide slot 26 does not have one in the figure fully illustrated, concentric with the cylindrical outer surface of the screen 23 arcuate section 33 and an inwardly indented section 32, the course of which corresponds to section 31. The course of section 32 is chosen so that when section 32 rotates as screen printing cylinder 12 rotates Guide extension 27 moved past, the squeegee 24 withdrawn radially inward as far is that there is only minimal pressure on the screen 23, which does not result in any significant deformation of the screen 23 in section 31, or that it causes contact completely loses with the screen 23 and thus does not exert any pressure on the section 31 thereof, that could deform it and damage it during operation.

Fig. 3b zeigt die Stellung der Rakel 24, nachdem der Abschnitt 32 den Führungsfortsatz 27 passiert hat. Der kreisbogenförmige Abschnitt 33 des Führungsschlitzes 26 hält die Rakel 24 gegen die Innenseite des Siebes 23 gedrückt, so dass eine auf der Rakel 24 befindliche Farbe 34 durch die offenen Bereiche des Siebes 23 hindurchgedrückt und auf diese Weise auf den Gummituchzylinder 9 übertragen wird.3b shows the position of the squeegee 24 after the section 32 has the guide extension 27 happened. The arcuate section 33 of the guide slot 26 holds the Doctor blade 24 pressed against the inside of the screen 23, so that one on the doctor blade 24 Color 34 is pressed through the open areas of the screen 23 and on is transferred to the blanket cylinder 9 in this way.

Fig. 4 zeigt eine Abwandlung des Siebdruckzylinders 12 aus Fig. 3a, b. Elemente, die denen des oben beschriebenen Siebdruckzylinders 12 entsprechen, sind mit gleichen Bezugszeichen bezeichnet und werden nicht erneut beschrieben. Die Konstruktion des Siebdruckzylinders 12 aus Fig. 4 ist durch den Fortfall des Führungsschlitzes 26 vereinfacht. Die Rakel 24 wird durch eine (nicht dargestellte) Federeinrichtung gegen das Sieb 23 gedrückt gehalten. Die Rakel 24 bleibt somit auch dann in Kontakt mit dem Sieb 23, wenn sich im Laufe der Drehbewegung des Siebdruckzylinders 12 der eingebuchtete Abschnitt 31 die Rakel 24 passiert. Bei der Passage des eingebuchteten Abschnitts 31 vor der Rakel 24 wird letztere entgegen der Kraft der Federeinrichtung zur Achse des Siebdruckzylinders 12 hin zurückgedrängt. Um dabei eine Verformung des Siebes 23 in dem Abschnitt 31 durch die Rakel 24 zu vermeiden, ist das Sieb 23 an seiner Außenseite durch ein Stützelement 36 abgestützt. Das Stützelement 36 hat hier die Form einer im Querschnitt kontinuierlich gewölbten Schale oder Rinne, z. B. aus Blech oder einem steifen Kunststoff, und ist an seinen beiden axialen Enden an den Stirnseiten des Siebdruckzylinders 12 verankert. Vorteilhafterweise befinden sich auch führendes und nacheilendes Ende des Siebes 23 in dem von dem Stützelement 36 überdeckten Abschnitt 31. Das Stützelement 36 kann in radialer Richtung (Pfeil 37) justierbar sein, um die Spannung des Siebes 23 einzustellen.Fig. 4 shows a modification of the screen printing cylinder 12 from Fig. 3a, b. Elements that correspond to those of the screen printing cylinder 12 described above, are the same Reference numerals are used and will not be described again. The construction of the Screen printing cylinder 12 from FIG. 4 is due to the omission of the guide slot 26 simplified. The doctor blade 24 is against by a spring device (not shown) Sieve 23 held down. The doctor blade 24 thus remains in contact with the screen 23, if the indented during the rotational movement of the screen printing cylinder 12 Section 31 passes the doctor blade 24. At the passage of the indented section 31 in front of the doctor blade 24 the latter against the force of the spring device to the axis of Screen printing cylinder 12 pushed back. In order to deform the screen 23 in to avoid the section 31 by the doctor blade 24, the screen 23 is on its outside supported by a support member 36. The support element 36 here has the shape of an Cross-section of continuously curved shell or gutter, e.g. B. from sheet metal or a rigid plastic, and is at its two axial ends on the front sides of the Screen printing cylinder 12 anchored. Advantageously, there are also leading and trailing end of the screen 23 in that covered by the support member 36 Section 31. The support element 36 can be adjustable in the radial direction (arrow 37) adjust the tension of the sieve 23.

Da bei der Drehung der Zylinder 9; 12 der Druckeinheit das Stützelement 36 jeweils mit der Halteeinrichtung 29 des Gummituchzylinders 9 zusammentrifft und somit im Bereich des Abschnitt 31 keine Farbe vom Siebdruckzylinder 12 abgenommen werden kann, ist das Stützelement 36 zweckmäßigerweise als eine geschlossene Platte ausgebildet, durch die keine Farbe hindurchtreten und auf das Äußere des Siebdruckzylinders 12 gelangen kann.Since when the cylinder 9; 12 of the printing unit, the support element 36 each with the holding device 29 of the blanket cylinder 9 meets and thus in the area of section 31, no ink can be taken from the screen printing cylinder 12 the support element 36 is expediently designed as a closed plate that no ink pass through and get onto the exterior of the screen printing cylinder 12 can.

Fig. 5 zeigt anhand eines Ausschnitts einen alternativen Aufbau eines Siebdruckzylinders 17.5 shows an alternative construction of a screen printing cylinder on the basis of a detail 17th

Dieser Siebdruckzylinder 17 ist auf seinem gesamten Umfang zylindrisch, ohne einen eingebuchteten Abschnitt. Er ist daher geeignet, mit einem zweiten Zylinder zusammenzuwirken, der keine radial nach außen vorstehenden Elemente wie etwa Haltevorrichtungen für einen Bedruckstoff aufweist. Bezogen auf die Druckeinheit aus Fig. 1 kann der zweite Siebdruckzylinder 17 die in Fig. 5 gezeigte Konstruktion aufweisen. Deshalb werden im Folgenden die Bezugszeichen 17 für den Siebdruckzylinder und 16 für den mit ihm zusammenwirkenden Zylinder verwendet.
Wie im Fall der Siebdruckzylinders aus Fig. 3a, b und 4 ist im Innern des hier gezeigten Siebdruckzylinders 17 eine Rakel 24 angeordnet, das eine pastenartige Farbe 34 durch das auf dem Siebdruckzylinder 17 gespannte Sieb 23 streicht und dabei einen Druck radial nach außen auf das Sieb 23 ausübt. Solange bei der gemeinsamen Rotation von Siebdruckzylinder 17 und Gummituchzylinder 16 das Sieb 23 die Oberfläche des Gummituchzylinders 16 berührt, liefert dieser einen Gegendruck, der eine Verformung des Siebs 23 durch die Rakel 24 verhindert. Um eine solche Verformung auch im Bereich des Kanals 38 zu verhindern, wo das Sieb 23 nicht im Kontakt mit dem Gummituchzylinder 16 steht, ist radial innerhalb des Siebs 23 ein Stützelement 39 angeordnet, das sich in Umfangsrichtung des Siebdruckzylinders 17 über einen Abschnitt 41 des Siebes 23 erstreckt, der der Ausdehnung des Kanals 38 am Gummituchzylinder 16 entspricht. Das Stützelement 39 ist eine in Form eines Zylindersegments gewölbte geschlossene Platte aus Metall oder steifem Kunststoff.
This screen printing cylinder 17 is cylindrical over its entire circumference, without an indented section. It is therefore suitable for interacting with a second cylinder which has no radially outwardly projecting elements, such as holding devices for a printing material. In relation to the printing unit from FIG. 1, the second screen printing cylinder 17 can have the construction shown in FIG. 5. Therefore, the reference numerals 17 are used below for the screen printing cylinder and 16 for the cylinder interacting with it.
As in the case of the screen printing cylinder from Fig. 3a, b and 4, a doctor blade 24 is arranged in the interior of the screen printing cylinder 17 shown here, which strokes a pasty ink 34 through the screen 23 stretched on the screen printing cylinder 17 and thereby exerts a pressure radially outwards on the Sieve 23 exercises. As long as the screen 23 touches the surface of the blanket cylinder 16 during the common rotation of the screen printing cylinder 17 and the blanket cylinder 16, the latter supplies a counterpressure which prevents the screen 23 from being deformed by the doctor blade 24. In order to prevent such deformation also in the region of the channel 38, where the screen 23 is not in contact with the blanket cylinder 16, a support element 39 is arranged radially inside the screen 23, which extends in the circumferential direction of the screen printing cylinder 17 over a section 41 of the screen 23 extends, which corresponds to the expansion of the channel 38 on the blanket cylinder 16. The support element 39 is a closed plate made of metal or rigid plastic which is curved in the form of a cylinder segment.

Das Stützelement 39 ist hier radial innerhalb des Siebes 23 angebracht, und führendes Ende 42 und nacheilendes Ende 43 des Siebes 23 überlappen einander in dem vom Stützelement 39 abgestützten Abschnitt 41. Auf diese Weise ist die empfindliche Verbindung zwischen den beiden Enden 42; 43, die z. B. geschweißt sein kann, vor dem Kontakt mit der Rakel 24 und damit vor vorzeitigem Verschleiß geschützt.The support element 39 is attached radially inside the sieve 23, and is leading End 42 and trailing end 43 of the screen 23 overlap each other in the Supporting element 39 supported section 41. In this way, the sensitive Connection between the two ends 42; 43, the z. B. can be welded before Contact with the doctor blade 24 and thus protected against premature wear.

Auch bei dieser Ausgestaltung eines Siebdruckzylinders 17 könnte ein Federelement für eine Verstellung der Rakel 24 in radialer Richtung vorgesehen werden. Die Konstruktion des Siebdruckzylinders 17 kann man weiter vereinfachen, indem man auf eine Verstellbarkeit der Rakel 24 verzichtet, so dass die Schwankungen des Radius allein durch eine elastische Verformung der das Sieb 23 berührenden, elastischen Lippe 44 der Rakel 24 kompensiert werden.In this embodiment of a screen printing cylinder 17, a spring element for an adjustment of the doctor blade 24 in the radial direction can be provided. The construction the screen printing cylinder 17 can be further simplified by clicking on a Adjustability of the doctor blade 24 is dispensed with, so that the fluctuations in the radius alone by an elastic deformation of the elastic lip 44 touching the screen 23 Doctor blade 24 are compensated.

Um bei einer solchen Konstruktion den Übergang der Rakel 24 vom Sieb 23 auf das Stützelement 39 und wieder zurück auf das Sieb 23 zu erleichtern und Gleichlaufstörungen des Siebdruckzylinders 17 zu vermeiden, ist das Stützelement 39 mit einer Auflaufkante 46 und einer Ablaufkante 47 versehen, die in der Umfangsrichtung des Siebdruckzylinders 17 abgeschrägt sind. Zusätzlich ist vorgesehen, dass diese Kanten 46; 47 nicht exakt parallel zu einer Erzeugenden der Außenfläche des Siebdruckzylinders 17 bzw. zur Lippe 44 der Rakel 24 verlaufen, sondern unter einem geringen Winkel hierzu. Denkbar ist z. B. ein sägezahn-, sparren- oder sinusförmiger Verlauf der Kanten 46; 47; vorzugsweise bilden die Kanten 46; 47 jeweils eine Schraubenlinie mit einer Ganghöhe, die ein Vielfaches der axialen Länge des Siebdruckzylinders 17 beträgt. Durch einen solchen Verlauf der Kanten 46; 47 wird vermieden, dass beim Auf- oder Ablaufen der Rakel 24 auf den Siebdruckzylinder 17 einwirkende Brems- oder Beschleunigungskräfte jeweils nur punktuell, bei einer bestimmten Winkelstellung des Siebdruckzylinders 17, wirksam werden, statt dessen werden sie auf einen Umfangsabschnitt des Siebdruckzylinders 17 verteilt, der je nach Abmessungen des Siebdruckzylinders 17 eine Ausdehnung von einigen Millimetern bis wenige Zentimeter haben kann. Das zum Antreiben des Siebdruckzylinders 17 erforderliche Drehmoment wird somit vergleichmäßigt, und Gleichlaufstörungen werden vermieden. In such a construction, the transition of the doctor blade 24 from the screen 23 to the Support element 39 and back on the screen 23 to facilitate and To avoid synchronism of the screen printing cylinder 17, the support member 39 is a leading edge 46 and a trailing edge 47 provided in the circumferential direction of the Screen printing cylinder 17 are beveled. It is also provided that these edges 46; 47 not exactly parallel to a generatrix of the outer surface of the screen printing cylinder 17 or to the lip 44 of the doctor blade 24, but at a small angle For this. It is conceivable, for. B. a sawtooth, rafter or sinusoidal course of the edges 46; 47; preferably the edges 46; 47 each have a helix with a Pitch that is a multiple of the axial length of the screen printing cylinder 17. By such a course of the edges 46; 47 is avoided that when running up or down the doctor blade 24 acting on the screen printing cylinder 17 braking or Accelerating forces only selectively, at a certain angular position of the Screen printing cylinder 17, take effect, instead they will be on one Distributed peripheral portion of the screen printing cylinder 17 which, depending on the dimensions of the Screen printing cylinder 17 an expansion of a few millimeters to a few centimeters may have. The torque required to drive the screen printing cylinder 17 is thus evened out and synchronism problems are avoided.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Bogenanlegersheet feeder
22
Bogenstapelsheet pile
33
Bandfördererbelt conveyors
44
Druckeinheitprinting unit
55
Auslagestapeldelivery pile
66
Kettenfördererchain conveyors
77
Transportzylindertransport cylinder
88th
Abschnittsection
99
Übertragungszylinder, GummituchzylinderTransfer cylinder, blanket cylinder
1010
--
1111
Abschnittsection
1212
Siebdruckzylinderscreen printing cylinder
1313
Spaltgap
1414
Spaltgap
1515
--
1616
Übertragungszylinder, GummituchzylinderTransfer cylinder, blanket cylinder
1717
Siebdruckzylinderscreen printing cylinder
17'17 '
Siebdruckzylinderscreen printing cylinder
1818
Abschnittsection
1919
Seitengestellside frame
2020
Stützringsupport ring
2121
Seitengestellside frame
2222
Seitengestellside frame
2323
Siebscree
2424
Rakeldoctor
2525
--
2626
Führungsschlitz guide slot
2727
FührungsfortsatzGuide extension
2828
Linieline
2929
Halteeinrichtungholder
3030
--
3131
Abschnitt (23)Section (23)
3232
Abschnitt (26)Section (26)
3333
Abschnitt (26)Section (26)
3434
Farbecolour
3535
--
3636
Stützelementsupport element
3737
Pfeilarrow
3838
Kanalchannel
3939
Stützelementsupport element
4040
--
4141
Abschnitt (23)Section (23)
4242
Ende, führendEnd, leading
4343
Ende, nacheilendEnd, lagging
4444
Lippelip
4545
--
4646
Auflaufkanterun-up edge
4747
Ablaufkantetrailing edge

Claims (5)

  1. Printing unit having a first screen-printing cylinder (12) and a second screen-printing cylinder (17), wherein a first transfer cylinder (9) is arranged to co-operate with the first screen-printing cylinder (12), characterised in that a second transfer cylinder (16) is arranged to co-operate with the second screen-printing cylinder (17) and in that the first (9) and second transfer cylinder (16) form a printing gap (14).
  2. Printing unit according to claim 1, characterised in that one (9) of the transfer cylinders (9, 16) has a holding means (11, 29) for sheet-like materials for printing.
  3. Printing unit according to claim 1, characterised in that the screen-printing cylinders (17, 12) have a means (26, 36, 39) for preventing deformation of their screens (23) over a defined section (31; 41) of the screens (23).
  4. Printing unit according to claim 3, characterised in that the means for preventing deformation comprises a guide slot (26) which draws a squeegee (24) radially inwards when the defined section (31) passes in front of the squeegee (24).
  5. Printing unit according to claim 1, characterised in that the printing unit is modular in construction, with the screen-printing cylinders (12; 17) forming respective removable modules (21; 22).
EP00991084A 2000-01-25 2000-12-16 Printing unit Expired - Lifetime EP1250228B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10003027 2000-01-25
DE10003027 2000-01-25
DE10025999A DE10025999C2 (en) 2000-01-25 2000-05-25 printing unit
DE10025999 2000-05-25
PCT/DE2000/004501 WO2001054905A1 (en) 2000-01-25 2000-12-16 Printing unit

Publications (2)

Publication Number Publication Date
EP1250228A1 EP1250228A1 (en) 2002-10-23
EP1250228B1 true EP1250228B1 (en) 2003-09-24

Family

ID=26004005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00991084A Expired - Lifetime EP1250228B1 (en) 2000-01-25 2000-12-16 Printing unit

Country Status (8)

Country Link
US (1) US6655270B2 (en)
EP (1) EP1250228B1 (en)
JP (1) JP2003520708A (en)
CN (1) CN1193875C (en)
AT (1) ATE250500T1 (en)
BR (1) BR0017011A (en)
RU (1) RU2229387C2 (en)
WO (1) WO2001054905A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006048329A1 (en) * 2006-10-12 2008-04-17 Man Roland Druckmaschinen Ag Paint dosing device for an inking unit

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319773B4 (en) * 2003-05-02 2006-04-20 Koenig & Bauer Ag screen printing cylinder
JP2006305788A (en) * 2005-04-27 2006-11-09 Komori Corp Liquid supply device
JP2007210218A (en) * 2006-02-10 2007-08-23 Komori Corp Liquid supply equipment
EP2014466A3 (en) * 2007-06-14 2010-12-15 Komori Corporation Liquid transfer member position adjusting method and apparatus of rotary stencil printing plate liquid coating machine
EP2698254B1 (en) 2012-08-17 2016-09-21 Komori Corporation Screen printing apparatus and combination printing press including the screen printing apparatus
JP6130111B2 (en) * 2012-08-17 2017-05-17 株式会社小森コーポレーション Screen printing apparatus and combination printing machine provided with the screen printing apparatus
JP6049179B2 (en) * 2012-09-21 2016-12-21 株式会社小森コーポレーション Rotary screen device
JP6090903B2 (en) * 2012-10-26 2017-03-08 株式会社小森コーポレーション Rotary screen printing machine
DE102015208918A1 (en) * 2015-05-13 2016-11-17 Koenig & Bauer Ag Doctor device, printing unit and method for operating a squeegee device
JP6251428B2 (en) * 2017-02-08 2017-12-20 株式会社小森コーポレーション Screen printing apparatus and combination printing machine provided with the screen printing apparatus
CN109130463B (en) * 2017-06-28 2019-09-13 长胜纺织科技发展(上海)有限公司 Vertical double-sided rotary screen transfer printing device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2132086A (en) * 1935-12-28 1938-10-04 Scheffler Max Friedrich Printing apparatus
DE2202545C3 (en) * 1972-01-20 1974-11-07 Werner Kammann Maschinenfabrik, 4980 Buende Screen printing process and apparatus
US4103615A (en) 1976-01-14 1978-08-01 Sir James Farmer Norton & Co., Limited Vertical rotary screen printing machine and ink supply therefore
US5285724A (en) 1990-08-31 1994-02-15 Ricoh Company, Ltd. Ink scraper for a stencil printer
JP3004416B2 (en) 1991-09-13 2000-01-31 理想科学工業株式会社 Squeegee device for ink supply of stencil printing machine
JP3267334B2 (en) * 1992-07-30 2002-03-18 理想科学工業株式会社 Stencil transfer printing method and stencil transfer printing apparatus
AU696709B2 (en) 1995-01-24 1998-09-17 Kba-Notasys Sa Rotary screen printing machine for sheet printing
NL1005525C2 (en) 1997-03-13 1998-09-15 Multi Print Systems M P S B V Printing machine with interchangeable ink applicators.
JPH11129599A (en) * 1997-11-04 1999-05-18 Tohoku Ricoh Co Ltd Method for stencil printing
AU738241B2 (en) 1998-04-08 2001-09-13 Kba-Notasys Sa Rotary printing machine for security papers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006048329A1 (en) * 2006-10-12 2008-04-17 Man Roland Druckmaschinen Ag Paint dosing device for an inking unit

Also Published As

Publication number Publication date
ATE250500T1 (en) 2003-10-15
EP1250228A1 (en) 2002-10-23
BR0017011A (en) 2002-10-22
CN1424965A (en) 2003-06-18
WO2001054905A1 (en) 2001-08-02
CN1193875C (en) 2005-03-23
RU2229387C2 (en) 2004-05-27
US20030010230A1 (en) 2003-01-16
US6655270B2 (en) 2003-12-02
JP2003520708A (en) 2003-07-08

Similar Documents

Publication Publication Date Title
EP1250226B1 (en) Intaglio printer
EP0883493B1 (en) Impression cylinder of a sheet-fed machine
EP0936065B1 (en) Apparatus for applying a liquid on a printed sheet, particularly printing or coating unit in rotary sheet printing machine
EP1250228B1 (en) Printing unit
WO2015032515A1 (en) Printing press for security printing and method for changing a printing forme and printing press start-up
EP1250230B1 (en) Sheet-fed printing press with screen-printing cylinder
WO2015032514A1 (en) Method and device for setting ink-conducting rotational bodies of a printing press
DE3409479A1 (en) TENSIONING DEVICES FOR THE PRESSURE PLATES FOR THE OFFSET PRINTING MACHINES WITH HOLES IN THE FRONT AND REAR EDGES IN THE CURVING ORIENTATION
DE10026000C2 (en) screen printing cylinder
DE2411691C3 (en) Combined multi-color offset and engraving rotary press
EP0467832B1 (en) Device for transferring single sheets to the offset cylinder of a rotary sheet-fed printing press
DE69124383T2 (en) OFFSET PRINTING MACHINE
DE10035354B4 (en) Offset
WO2001054908A1 (en) Screen cylinder
EP1250229B1 (en) Printing unit
DE10025995C1 (en) Printing unit with two screen printing cylinders
EP2033786A2 (en) Inking chamber
DE10025999A1 (en) Printing unit
DE2314302B2 (en) METHOD AND EQUIPMENT FOR ACHIEVING A PERFECT PRINT IN A DOUBLE PRINTING UNIT OF A MULTI-COLOR SHEET ROTATION OFFSET PRINTING MACHINE
DE10025994C1 (en) Printing unit
EP1486328A2 (en) Intaglio printing machine with a screen cylinder
EP0455782A1 (en) Rotary sheet offset printing machine
DE102016203635B4 (en) Method of operating a printing press
DE4340867A1 (en) Wiper-actuating mechanism for printing-press application roller
EP0463343A2 (en) Printing machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20020725

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030924

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030924

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030924

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030924

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50003865

Country of ref document: DE

Date of ref document: 20031030

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031216

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031224

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040104

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
LTIE Lt: invalidation of european patent or patent extension

Effective date: 20030924

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
BERE Be: lapsed

Owner name: *KOENIG & BAUER A.G.

Effective date: 20031231

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040625

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20041122

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20041215

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20041216

Year of fee payment: 5

Ref country code: AT

Payment date: 20041216

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20041217

Year of fee payment: 5

Ref country code: SE

Payment date: 20041217

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051216

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060701

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20051216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040224