EP1246726B1 - Rotation printing machine - Google Patents

Rotation printing machine Download PDF

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Publication number
EP1246726B1
EP1246726B1 EP00975864A EP00975864A EP1246726B1 EP 1246726 B1 EP1246726 B1 EP 1246726B1 EP 00975864 A EP00975864 A EP 00975864A EP 00975864 A EP00975864 A EP 00975864A EP 1246726 B1 EP1246726 B1 EP 1246726B1
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EP
European Patent Office
Prior art keywords
doctor blade
cylinder
printing
machine according
printing machine
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
EP00975864A
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German (de)
French (fr)
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EP1246726A1 (en
Inventor
Heinz-Jürgen ELBERS
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.)
Sonko Konstruktions- und Sondermaschinen Vertriebs- GmbH
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Sonko Konstruktions- und Sondermaschinen Vertriebs- GmbH
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Publication date
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Publication of EP1246726A1 publication Critical patent/EP1246726A1/en
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Publication of EP1246726B1 publication Critical patent/EP1246726B1/en
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    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F15/00Screen printers
    • B41F15/14Details
    • B41F15/40Inking units
    • B41F15/42Inking units comprising squeegees or doctors

Definitions

  • the invention relates to a rotary printing press of the so-called type Letterpress machine according to the preamble of claim 1.
  • a printing press used in practice has therefore already been developed at which the squeegee is articulated to a side pivotable outside of the printing cylinder Lever arrangement is attached, which is connected to a controller and that Doctor blade actively swings away from the inside of the printing screen when passing the gripper bar.
  • this device is due to the pivoting movement of the squeegee heavily exposed to vibrations, which is particularly evident at high speeds of the printing cylinder has a strong impact.
  • the side openings of the impression cylinder be very large to the pivoting movement of the lever arrangement and of the squeegee. Because of the large space that this squeegee bearing required with lever arrangement, this version is only suitable for small pressure cylinders, to keep the overall size of the array within limits.
  • the invention is therefore concerned with the problem of a generic rotary printing press to create that even at high print speeds at low Wear of the printing screen can be used and precise printing results supplies.
  • the rotary printing press according to the invention works particularly low-vibration, when the direction of movement of the squeegee is directed radially to the impression cylinder axis is.
  • the direction of movement runs of the squeegee through the center of gravity of the impression cylinder, which makes possible Vibrations are compensated for as best as possible.
  • the rotary printing machine shown in Fig. 1 is for printing in one Magazine 1 held single sheet material to be printed 2 designed.
  • the path of the individual sheets 2 through the rotary printing machine is included Arrows marked.
  • Sheet 2 also acts during rotation rotating printing cylinder 6, which is mounted on the machine frame 7.
  • To the gripper bar 5 releases the printed sheet 2 again and the printing process this is during its further transport through the rotary printing press dried and finally sent for further processing or sorting.
  • Fig. 2 shows how the printing screen 8 by the action of the gripper bar 5 of the impression cylinder 4 during the rolling of pressure cylinders 6 and Impression cylinder 4 is deformed.
  • the illustration in FIG. 2 is, however, only schematically and also corresponds in the arrangement of the printing cylinder 6 and Impression cylinder 4 not Fig. 1st
  • FIGS. 3 to 5 The design, storage and control of the doctor blade 9 according to the invention Rotary printing machine is shown in FIGS. 3 to 5.
  • the doctor blade 9 is on a doctor blade holder 10, which in turn has a guide plate 11 a doctor blade holder designed as a doctor tube 12 via screw connections 13 or the like connecting elements is connected.
  • the doctor tube 12 extends concentric to the impression cylinder axis 14 through the impression cylinder 6 and is rigidly connected to the machine frame 7 at both ends such that the squeegee 9 is always aligned with the impression cylinder 4.
  • the Storage of the doctor blade 9 is very stable in this embodiment. Also gives the doctor tube 12 the entire pressure cylinder 6 additional stability.
  • the doctor tube 12 forms one on both sides channel-shaped access opening to the inside of the printing cylinder 6, through which the Printing ink or, if necessary, other fluid media e.g. Cleaning fluid in the Inside of the printing cylinder 6 can be passed.
  • Other lines, e.g. Electrical or pneumatic control lines and hoses can be in the doctor tube 12 are performed.
  • the doctor tube 12 encapsulates the most essential elements the squeegee bearing against the printing ink or other media inside of the pressure cylinder 6 and therefore effectively protects these elements against Pollution and premature wear.
  • the control of the movement of the squeegee 9 can, for example, be hydraulic or pneumatic or electromagnetic. However, the embodiment shown is preferred, where the squeegee movement is initiated via a curve guide.
  • a cam 18 in the side walls 19 of the pressure cylinder 6 provided that the squeegee 9 automatically on the by a preformed contour right place from the inside of the printing screen 8.
  • This kind of mechanical Doctor blade control is extremely precise and enables extremely high rotational speeds or printing speeds at which the squeegee movement with others Control systems could no longer be implemented.
  • the arrangement of the Cam 18 guaranteed in the side walls 19 of the pressure cylinder 6 direct coupling to the speed of rotation of the printing cylinder, thereby avoiding incorrect controls.
  • the cam is as shown 18 formed as a separate, replaceable part, so that the Control by using other cams in a simple way changed conditions on the impression cylinder 4 is adaptable. So that from the cam 18 predetermined contour low wear and low friction in a corresponding Transmits motion of the doctor 9, the doctor holder 10 is supported lateral arms 20 via guide rollers 21 arranged in these on the cam plate 18 from.
  • doctor 9 is able to adapt the printing screen 8 or the printing cylinder 6 via the squeegee holder 10 opposite the squeegee tube 12 to the jacket of the printing cylinder 6 too biased.
  • pistons 22 of the doctor blade holder 10 are not shown Compressed air supply lines in piston guides 23 are pressurized with compressed air.
  • Other types of springs can also be provided for the preload be, however, the preferred pneumatic bias here especially individual attitude.
  • the preload can also be reduced by releasing the Compressed air can be removed completely.
  • the doctor blade receptacle also has a retraction device 24, in which a Coil spring 25 counteracts the bias by compressed air in the piston guides 23. If the compressed air is discharged from the piston guides 23, the pulls Spring 25 the squeegee 9 automatically via a connecting rod 26 to the squeegee holder 10 away from the printing screen 8.
  • the retraction device 24 can also be without mechanical Spring, for example, hydraulically, electrically, pneumatically or magnetically be operable.
  • the preferred embodiment also has an adjusting device 27, via which the distance between doctor 9 and doctor holder 10 can be changed. This is necessary, for example, to compensate for wear make when the squeegee is worn or on its front Edge was reground.
  • the adjusting device 27 can in turn be pneumatic, designed to be hydraulically, electrically, magnetically or mechanically actuated his.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Rotary Presses (AREA)
  • Control Of Electric Motors In General (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

The invention relates to a rotation printing machine (7), a feeder device (3) for material to be printed (2), a printing cylinder (6) which can be rotated about a printing cylinder axis (14) comprising a printing sieve (8), a rotating counter pressure cylinder (4) provided with a gripper strip (5) in order to take up the material to be printed (2) and a doctor blade (9) which can be moved relative to the cylinder casing. The blade is located on the inside of the print cylinder (6). The invention also comprises a control for the movement of the doctor blade. The invention is characterized in that the doctor blade (9) protrudes through the printing cylinder on an axis (14) parallel to or along the printing cylinder axis (14) and a doctor blade receiver which is rigidly connected to the machine frame (7) is positioned in such a way that only translational movement can be undertaken. Preferably, the doctor blade receiver is formed by a doctor blade pipe (12) which essentially surrounds the doctor blade (12).

Description

Die Erfindung betrifft eine Rotationsdruckmaschine vom Typ einer sogenannten Buchdruckmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a rotary printing press of the so-called type Letterpress machine according to the preamble of claim 1.

Bei derartigen Maschinen, wie z.B. in EP-A-0723864 gezeigt, wird über einen mit einem Drucksieb versehenen rotierenden Druckzylinder in diesen eingefüllte Druckfarbe auf das zu bedruckende Material aufgebracht. Dabei drückt ein im Inneren des Druckzylinders angeordnetes, sich nicht mit dem Druckzylinder drehendes Rakel die Druckfarbe durch die Rotation des Druckzylinders umlaufend durch die Maschen des Drucksiebes hindurch. Das zu bedruckende Material wird dabei von einer ebenfalls rotierenden Gegendruckwalze aufgenommen. Die Besonderheit solcher Buchdruckmaschinen ist, daß das zu bedruckende Material nicht in durchgehenden Bahnen, sondern in Einzelblättern vorliegt, die daher während des Druckvorgangs auf dem Gegendruckzylinder festgehalten werden müssen. Dazu dient eine am Gegendruckzylinder vorgesehene Greiferleiste. Da die Greiferleiste über den Umfang des Gegendruckzylinders vorsteht, muß - um das Drucksieb nicht zu beschädigen - das Rakel während jeder Umdrehung des Druckzylinders beim Passieren der Greiferleiste von der Innenseite des Drucksiebes abgehoben werden, um ein flexibles Nachgeben des Drucksiebes zu ermöglichen. Bei den herkömmlichen Druckmaschinen geschieht dies dadurch, daß das Rakel federnd angeordnet ist und somit von der Greiferleiste gegen die Federkraft zurückgedrückt werden kann. Dies geht jedoch mit einem hohen Verschleiß an dem Drucksieb einher. Auch ist bei hohen Druckgeschwindigkeiten nicht zu vermeiden, daß das Rakel nach der durch die Greiferleiste initiierten Abhebebewegung springt und somit der unmittelbar auf die Greiferleiste folgende Bereich des zu bedruckenden Materials häufig nicht korrekt bedruckt wird.In such machines, e.g. shown in EP-A-0723864 is about a rotating with a pressure screen Printing cylinder in this filled ink on the material to be printed applied. In doing so, one located inside the impression cylinder presses itself squeegee not rotating with the printing cylinder by rotating the printing ink Printing cylinder all the way through the mesh of the printing screen. That too printing material is also from a rotating counter-pressure roller added. The peculiarity of such letterpress machines is that what is to be printed Material is not in continuous webs, but in single sheets, which is therefore held on the impression cylinder during the printing process Need to become. This is done by a provided on the impression cylinder Gripper bar. Since the gripper bar protrudes beyond the circumference of the impression cylinder, must - in order not to damage the printing screen - the squeegee during each revolution the pressure cylinder when passing the gripper bar from the inside of the Print screen are lifted off to allow flexible yield of the print screen enable. In conventional printing machines, this is done in that the squeegee is arranged resiliently and thus by the gripper bar against the spring force can be pushed back. However, this starts with a high level of wear the printing screen. Even at high printing speeds, it cannot be avoided that the squeegee after the lifting movement initiated by the gripper bar jumps and thus the area immediately following the gripper bar of the area to be printed Material is often not printed correctly.

Es wurde daher bereits eine in der Praxis eingesetzte Druckmaschine entwickelt, bei der das Rakel an einer seitlich außerhalb des Druckzylinders verschwenkbar angelenkten Hebelanordnung befestigt ist, die mit einer Steuerung verbunden ist und das Rakel bei Passieren der Greiferleiste aktiv von der Innenseite des Drucksiebes wegschwenkt. Diese Vorrichtung ist jedoch durch die Verschwenkbewegung des Rakels stark schwingungsbelastet, was sich bei hohen Drehzahlen des Druckzylinders besonders stark auswirkt. Auch müssen die seitlichen Öffnungen des Druckzylinders sehr groß ausgebildet sein, um die Verschwenkbewegung der Hebelanordung und des Rakels zu ermöglichen. Wegen des großen Bauraums, den diese Rakellagerung mit Hebelanordnung erfordert, eignet sich diese Ausführung nur für kleine Druckzylinder, um die Gesamtgröße der Anordnung in Grenzen zu halten.A printing press used in practice has therefore already been developed at which the squeegee is articulated to a side pivotable outside of the printing cylinder Lever arrangement is attached, which is connected to a controller and that Doctor blade actively swings away from the inside of the printing screen when passing the gripper bar. However, this device is due to the pivoting movement of the squeegee heavily exposed to vibrations, which is particularly evident at high speeds of the printing cylinder has a strong impact. Also the side openings of the impression cylinder be very large to the pivoting movement of the lever arrangement and of the squeegee. Because of the large space that this squeegee bearing required with lever arrangement, this version is only suitable for small pressure cylinders, to keep the overall size of the array within limits.

Die Erfindung befaßt sich daher mit dem Problem, eine gattungsgemäße Rotationsdruckmaschine zu schaffen, die auch bei hohen Druckgeschwindigkeiten unter geringem Verschleiß des Drucksiebes einsetzbar ist und präzise Druckergebnisse liefert.The invention is therefore concerned with the problem of a generic rotary printing press to create that even at high print speeds at low Wear of the printing screen can be used and precise printing results supplies.

Erfindungsgemäß wird dieses Problem durch eine Rotationsdruckmaschine mit den Merkmalen des Anspruchs 1 gelöst.According to the invention, this problem is solved by a rotary printing press with the Features of claim 1 solved.

Bei einer so ausgebildeten Druckmaschine findet die Bewegung des Rakels nur noch innerhalb des Druckzylinders statt. Bei der Bewegung des Rakels ggf. auftretende Vibrationen oder Stöße werden dabei über die starr mit dem Maschinenrahmen verbundene Rakelaufnahme direkt in den Maschinenrahmen abgeleitet, ohne die Rotationsbewegung des Druckzylinders zu beeinflussen oder dieser eine weitere Schwingungsbewegung zu überlagern. Dadurch, daß sich die Rakelaufnahme durch den Druckzylinder hindurch erstreckt, wird dem gesamten System zusätzlich Stabilität verliehen. Die rein translatorische Bewegung des Rakels ist dabei ebenfalls von Vorteil, da neben der Rotationsbewegung des Druckzylinders keine weitere rotatorische Bewegungskomponente auftrifft, die zu Systemschwingungen führen könnte. Auch kann eine Lagerung des Rakels für eine translatorische Bewegung in wesentlich kleinerer Bauform verwirklicht und daher im Gegensatz zu der Schwenklagerung vorbekannter Rakel im Inneren des Druckzylinders angeordnet werden.With a printing press designed in this way, the movement of the doctor blade only takes place still held inside the impression cylinder. Any occurring during the movement of the squeegee Vibrations or shocks are caused by the rigid with the machine frame connected doctor blade holder directly into the machine frame, without affecting the rotary motion of the impression cylinder or this one to overlay further vibration movement. Because the doctor blade holder extends through the impression cylinder, the entire system added stability. The purely translatory movement of the squeegee is included also advantageous because in addition to the rotational movement of the printing cylinder no other rotational movement component hits, which leads to system vibrations could lead. Storage of the doctor blade for a translatory Movement realized in a much smaller design and therefore in contrast to the pivot bearing of previously known doctor blade arranged in the interior of the impression cylinder become.

Im Hinblick auf Baugröße und unerwünschte Schwingungen ist es dabei besonders vorteilhaft, die Lagerung des Rakels so auszugestalten, daß das Rakel nur linear bewegbar ist.It is special in terms of size and unwanted vibrations advantageous to design the storage of the doctor blade so that the doctor blade is only linear is movable.

Besonders schwingungsarm arbeitet die erfindungsgemäße Rotationsdruckmaschine, wenn die Bewegungsrichtung des Rakels radial zu Druckzylinderachse gerichtet ist. Bei einer solchen Ausgestaltung der Lagerung verläuft die Bewegungsrichtung des Rakels durch den Schwerpunkt des Druckzylinders, wodurch eventuelle Schwingungen bestmöglich kompensiert werden.The rotary printing press according to the invention works particularly low-vibration, when the direction of movement of the squeegee is directed radially to the impression cylinder axis is. With such a configuration of the bearing, the direction of movement runs of the squeegee through the center of gravity of the impression cylinder, which makes possible Vibrations are compensated for as best as possible.

Weitere Vorteile und Einzelheiten ergeben sich aus den Unteransprüchen und einem in den Zeichnungen dargestellten Ausführungsbeispiel einer erfindungsgemäßen Rotationsdruckmaschine, das im folgenden beschrieben wird; es zeigen:

Fig. 1
eine Rotationsdruckmaschine in schematisierter Seitenansicht,
Fig. 2
den Einwirkungsbereich zwischen dem Druckzylinder und dem Gegendruckzylinder einer Rotationsdruckmaschine,
Fig. 3
teilweise eine perspektivische Ansicht des Druckzylinders einer erfindungsgemäßen Rotationsdruckmaschine, bereichsweise geschnitten,
Fig. 4
das Rakel mit Rakelaufnahme aus Fig. 3 und
Fig. 5
den Druckzylinder aus Fig. 3 ohne Rakel und Rakelaufnahme.
Further advantages and details emerge from the subclaims and an exemplary embodiment of a rotary printing press according to the invention shown in the drawings, which is described below; show it:
Fig. 1
a rotary printing machine in a schematic side view,
Fig. 2
the area of influence between the impression cylinder and the impression cylinder of a rotary printing press,
Fig. 3
partially a perspective view of the printing cylinder of a rotary printing press according to the invention, partially cut,
Fig. 4
the squeegee with squeegee from Fig. 3 and
Fig. 5
the printing cylinder of Fig. 3 without a doctor blade and doctor blade holder.

Die in Fig. 1 dargestellte Rotationsdruckmaschine ist zum Bedrucken von in einem Magazin 1 vorgehaltenem einzelblattförmigen zu bedruckenden Material 2 ausgelegt. Der Weg der einzelnen Blättern 2 durch die Rotationsdruckmaschine ist mit Pfeilen gekennzeichnet. Zunächst gelangen die Blätter einzeln nacheinander über eine Zuführeinrichtung 3 zu einem rotierenden Gegendruckzylinder 4. Dieser verfügt über eine in Fig. 2 dargestellte Greiferleiste 5, mit der das Blatt 2 am Gegendruckzylinder 4 festgeklemmt wird. Während der Rotation wirkt auf das Blatt 2 ein ebenfalls rotierender Druckzylinder 6 ein, der am Maschinenrahmen 7 gelagert ist. Nach dem Druckvorgang gibt die Greiferleiste 5 das nun bedruckte Blatt 2 wieder frei und dieses wird während seines weiteren Transports durch die Rotationsdruckmaschine getrocknet und schließlich einer Weiterbearbeitung oder Sortierung zugeführt.The rotary printing machine shown in Fig. 1 is for printing in one Magazine 1 held single sheet material to be printed 2 designed. The path of the individual sheets 2 through the rotary printing machine is included Arrows marked. First, the leaves come over one after the other a feed device 3 to a rotating impression cylinder 4. This has via a gripper bar 5 shown in Fig. 2, with which the sheet 2 on the impression cylinder 4 is clamped. Sheet 2 also acts during rotation rotating printing cylinder 6, which is mounted on the machine frame 7. To the gripper bar 5 releases the printed sheet 2 again and the printing process this is during its further transport through the rotary printing press dried and finally sent for further processing or sorting.

Fig. 2 zeigt, wie das Drucksieb 8 durch die Einwirkung der Greiferleiste 5 des Gegendruckzylinders 4 während des Aufeinanderabrollens von Druckzylinder 6 und Gegendruckzylinder 4 verformt wird. Die Darstellung in Fig. 2 ist jedoch lediglich schematisch und entspricht auch in der Anordnung des Druckzylinders 6 und des Gegendruckzylinders 4 nicht Fig. 1.Fig. 2 shows how the printing screen 8 by the action of the gripper bar 5 of the impression cylinder 4 during the rolling of pressure cylinders 6 and Impression cylinder 4 is deformed. The illustration in FIG. 2 is, however, only schematically and also corresponds in the arrangement of the printing cylinder 6 and Impression cylinder 4 not Fig. 1st

Die erfindungsgemäße Ausgestaltung, Lagerung und Steuerung des Rakels 9 der Rotationsdruckmaschine ist in den Fig. 3 bis 5 dargestellt. Dabei ist das Rakel 9 an einem Rakelhalter 10 festgelegt, der wiederum über eine Führungsplatte 11 mit einer als Rakelrohr 12 ausgestalteten Rakelaufnahme über Verschraubungen 13 oder dergleichen Verbindungselemente verbunden ist. Das Rakelrohr 12 erstreckt sich konzentrisch zur Druckzylinderachse 14 durch den Druckzylinder 6 hindurch und ist an seinen beiden Enden starr mit dem Maschinenrahmen 7 verbunden derart, daß das Rakel 9 stets auf den Gegendruckzylinder 4 hin ausgerichtet ist. Die Lagerung des Rakels 9 ist bei dieser Ausgestaltung sehr stabil. Außerdem verleiht das Rakelrohr 12 dem gesamten Druckzylinder 6 zusätzliche Stabilität. Bei der dargestellten Ausführungsform erübrigt sich in vorteilhafter Weise eine komplizierte Lagerung des Druckzylinders 6, da dieser direkt auf dem Rakelrohr 12 über Kugellager 15 rotierbar gelagert ist. Das Rakelrohr 12 bildet dabei zu beiden Seiten eine kanalförmige Zugangsöffung zum Inneren des Druckzylinders 6, durch die gezielt die Druckfarbe oder falls nötig andere fluide Medien z.B. Reinigungsflüssigkeit in das Innere des Druckzylinders 6 geleitet werden können. Auch andere Leitungen, z.B. elektrische oder pneumatische Steuerleitungen und Schläuche, können im Rakelrohr 12 geführt werden. Darüber hinaus kapselt das Rakelrohr 12 die wesentlichsten Elemente der Rakellagerung gegenüber der Druckfarbe oder anderen Medien im inneren des Druckzylinders 6 ab und schützt diese Elemente daher wirkungsvoll gegen Verschmutzung und frühzeitigen Verschleiß.The design, storage and control of the doctor blade 9 according to the invention Rotary printing machine is shown in FIGS. 3 to 5. The doctor blade 9 is on a doctor blade holder 10, which in turn has a guide plate 11 a doctor blade holder designed as a doctor tube 12 via screw connections 13 or the like connecting elements is connected. The doctor tube 12 extends concentric to the impression cylinder axis 14 through the impression cylinder 6 and is rigidly connected to the machine frame 7 at both ends such that the squeegee 9 is always aligned with the impression cylinder 4. The Storage of the doctor blade 9 is very stable in this embodiment. Also gives the doctor tube 12 the entire pressure cylinder 6 additional stability. In the illustrated embodiment advantageously dispenses with a complicated Storage of the pressure cylinder 6, since this directly on the doctor tube 12 via ball bearings 15 is rotatably mounted. The doctor tube 12 forms one on both sides channel-shaped access opening to the inside of the printing cylinder 6, through which the Printing ink or, if necessary, other fluid media e.g. Cleaning fluid in the Inside of the printing cylinder 6 can be passed. Other lines, e.g. Electrical or pneumatic control lines and hoses can be in the doctor tube 12 are performed. In addition, the doctor tube 12 encapsulates the most essential elements the squeegee bearing against the printing ink or other media inside of the pressure cylinder 6 and therefore effectively protects these elements against Pollution and premature wear.

Damit das Rakel 9 die erforderliche translatorische Bewegung in Richtung des Pfeiles 16 von dem Drucksieb 8 weg und wieder auf dieses zu ausführen kann, ist der Rakelhalter 10 über Führungsbolzen 17 verschieblich an der Führungsplatte 11 und damit am Rakelrohr 12 geführt.So that the squeegee 9 the required translational movement in the direction of the arrow 16 away from the printing screen 8 and to run again on this is the Doctor blade holder 10 slidably on the guide plate 11 and thus performed on the doctor tube 12.

Die Steuerung der Bewegung des Rakels 9 kann beispielsweise hydraulisch, pneumatisch oder elektromagnetisch erfolgen. Bevorzugt ist jedoch die dargestellte Ausführungsform, bei der die Rakelbewegung über eine Kurvenführung eingeleitet wird. Dazu ist eine Kurvenscheibe 18 in den Seitenwandungen 19 des Druckzylinders 6 vorgesehen, die durch eine vorgeformte Kontur das Rakel 9 automatisch an der richtigen Stelle von der Innenseite des Drucksiebs 8 abhebt. Diese Art der mechanischen Rakelsteuerung ist außerordentlich präzise und ermöglicht extrem hohe Rotationszahien bzw. Druckgeschwindigkeiten, bei denen die Rakelbewegung mit anderen Steuerungssystemen nicht mehr umgesetzt werden könnte. Die Anordnung der Kurvenscheibe 18 in den Seitenwandungen 19 des Druckzylinders 6 gewährleistet dabei eine unmittelbare Koppelung an die Rotationsgeschwindigkeit des Druckzylinders, wodurch Fehlsteuerungen vermieden werden. Wie dargestellt ist die Kurvenscheibe 18 dabei als separates, auswechselbares Teil ausgebildet, so daß die Steuerung durch Verwendung anderer Kurvenscheiben auf einfache Weise an veränderte Bedingungen am Gegendruckzylinder 4 anpaßbar ist. Damit sich die von der Kurvenscheibe 18 vorgegebene Kontur veschleiß- und reibungsarm in eine entsprechende Bewegung des Rakels 9 überträgt, stützt sich der Rakelhalter 10 an seitlichen Armen 20 über in diesen angeordneten Führungsrollen 21 auf der Kurvenscheibe 18 ab.The control of the movement of the squeegee 9 can, for example, be hydraulic or pneumatic or electromagnetic. However, the embodiment shown is preferred, where the squeegee movement is initiated via a curve guide. There is a cam 18 in the side walls 19 of the pressure cylinder 6 provided that the squeegee 9 automatically on the by a preformed contour right place from the inside of the printing screen 8. This kind of mechanical Doctor blade control is extremely precise and enables extremely high rotational speeds or printing speeds at which the squeegee movement with others Control systems could no longer be implemented. The arrangement of the Cam 18 guaranteed in the side walls 19 of the pressure cylinder 6 direct coupling to the speed of rotation of the printing cylinder, thereby avoiding incorrect controls. The cam is as shown 18 formed as a separate, replaceable part, so that the Control by using other cams in a simple way changed conditions on the impression cylinder 4 is adaptable. So that from the cam 18 predetermined contour low wear and low friction in a corresponding Transmits motion of the doctor 9, the doctor holder 10 is supported lateral arms 20 via guide rollers 21 arranged in these on the cam plate 18 from.

Um das Rakel 9 bei Inbetriebnahme der Rotationsdruckmaschine exakt an das jeweilige Drucksieb 8 bzw. den Druckzylinder 6 anpassen zu können, ist das Rakel 9 über den Rakelhalter 10 gegenüber dem Rakelrohr 12 auf den Mantel des Druckzylinders 6 zu vorgespannt. Hierzu sind Kolben 22 des Rakelhalters 10 über nicht dargestellte Druckluftzuleitungen in Kolbenführungen 23 mit Druckluft beaufschlagt. Zwar können auch andere Arten von Federn für die Vorspannung vorgesehen werden, jedoch ermöglicht die hier bevorzugte pneumatische Vorspannung eine besonders individuelle Einstellung. Auch kann die Vorspannung durch Ablassen der Druckluft vollständig herausgenommen werden. Um z.B. beim Einbau, bei der Reinigung des Druckzylinders oder bei drucklosen Probeläufen der Rotationsdruckmaschine ein gezieltes Heranziehen des Rakels 9 an das Rakelrohr 12 zu ermöglichen, weist die Rakelaufnahme ferner eine Rückzugvorrichtung 24 auf, bei der eine Spiralfeder 25 der Vorspannung durch Druckluft in den Kolbenführungen 23 entgegenwirkt. Wird die Druckluft aus den Kolbenführungen 23 abgelassen, zieht die Feder 25 über eine Verbindungsstange 26 zum Rakelhalter 10 das Rakel 9 automatisch von dem Drucksieb 8 weg. Die Rückzugvorrichtung 24 kann auch ohne mechanische Feder beispielsweise hydraulisch, elektrisch, pneumatisch oder magnetisch betätigbar sein.In order to precisely match the doctor blade 9 to the respective one when the rotary printing press is started up The doctor 9 is able to adapt the printing screen 8 or the printing cylinder 6 via the squeegee holder 10 opposite the squeegee tube 12 to the jacket of the printing cylinder 6 too biased. For this purpose, pistons 22 of the doctor blade holder 10 are not shown Compressed air supply lines in piston guides 23 are pressurized with compressed air. Other types of springs can also be provided for the preload be, however, the preferred pneumatic bias here especially individual attitude. The preload can also be reduced by releasing the Compressed air can be removed completely. To e.g. during installation, during Cleaning the printing cylinder or during pressureless test runs of the rotary printing press to enable a targeted pulling of the doctor blade 9 onto the doctor tube 12, the doctor blade receptacle also has a retraction device 24, in which a Coil spring 25 counteracts the bias by compressed air in the piston guides 23. If the compressed air is discharged from the piston guides 23, the pulls Spring 25 the squeegee 9 automatically via a connecting rod 26 to the squeegee holder 10 away from the printing screen 8. The retraction device 24 can also be without mechanical Spring, for example, hydraulically, electrically, pneumatically or magnetically be operable.

Für die Feinjustierung des Rakels 9 weist die bevorzugte Ausführungsform ferner eine Verstellvorrichtung 27 auf, über die der Abstand zwischen Rakel 9 und Rakelhalter 10 verändert werden kann. Dies ist beispielsweise notwendig, um einen Verschleißausgleich vorzunehmen, wenn das Rakel abgenutzt ist oder an seiner vorderen Kante nachgeschliffen wurde. Die Verstellvorrichtung 27 kann wiederum pneumatisch, hydraulisch, elektrisch, magnetisch oder mechanisch betätigbar ausgestaltet sein.For the fine adjustment of the doctor blade 9, the preferred embodiment also has an adjusting device 27, via which the distance between doctor 9 and doctor holder 10 can be changed. This is necessary, for example, to compensate for wear make when the squeegee is worn or on its front Edge was reground. The adjusting device 27 can in turn be pneumatic, designed to be hydraulically, electrically, magnetically or mechanically actuated his.

Insgesamt ist die dargestellte Ausführungsform sehr flexibel an den jeweiligen Einsatzzweck anpaßbar, dabei außerordentlich stabil und sehr präzise und langlebig in ihrer Funktion.Overall, the embodiment shown is very flexible to the respective Customizable, extremely stable and very precise and durable in their function.

Claims (13)

  1. Rotary printing machine with a machine frame (7), a feeder device (3) for material to be printed (2), a printing cylinder (6) mounted so that it can be rotated about a printing cylinder axis (14), the jacket of which cylinder is formed at least partially by a printing screen (8), a rotary counter pressure cylinder (4), provided with a gripper strip (5), for receiving the material to be printed (2), and a doctor blade (9), which is arranged inside the printing cylinder (6) so that it can be moved relative to the cylinder jacket and which pushes printing ink from the inside of the printing cylinder (6) through the printing screen (8) on to the material to be printed (2), which is retained on the counter pressure cylinder (4), and with a control system for the doctor blade movement, characterised in that the doctor blade (9) is mounted on a doctor blade receiver rigidly connected to the machine frame (7) and extending parallel with or along the pressure cylinder axis (14) through the pressure cylinder (6) so that a purely translational movement is performed.
  2. Rotary printing machine according to claim 1, characterised in that the doctor blade receiver is a doctor blade tube (12) which essentially surrounds the support of the doctor blade (9).
  3. Rotary printing machine according to claim 1 or 2, characterised in that the support for the doctor blade (9) is formed by a doctor blade holder (10) supporting the doctor blade (9) and connected to the doctor blade receiver.
  4. Rotary printing machine according to claim 3, characterised in that the doctor blade holder (10) is secured to the doctor blade receiver so that it is movable relative to the receiver in an exclusively linear direction.
  5. Rotary printing machine according to claim 3 or 4, characterised in that the doctor blade holder (10) is displaceably guided on the doctor blade receiver.
  6. Rotary printing machine according to one of claims 3 to 5, characterised in that the doctor blade holder (10) is prestressed relative to the doctor blade receiver in the direction of the cylinder jacket.
  7. Rotary printing machine according to one of claims 3 to 6, characterised in that the control system for the doctor blade movement is formed by at least one cam guide (18) acting on the doctor blade holder (10).
  8. Rotary printing machine according to claim 7, characterised in that the cam guide (18) is provided in the pressure cylinder (6).
  9. Rotary printing machine according to claim 8, characterised in that the cam guide (18) is replaceably connected to the printing cylinder (6).
  10. Rotary printing machine according to one of claims 3 to 9, characterised in that the doctor blade holder (10) exhibits an adjusting device (27) for adjusting the distance between the doctor blade (9) and doctor blade holder (10).
  11. Rotary machine according to one of claims 1 to 10, characterised in that the printing cylinder (60) is mounted on the doctor blade receiver.
  12. Rotary printing machine according to one of claims 1 to 11, characterised in that the doctor blade receiver exhibits a retum device (24) for pulling the doctor blade (9) in the direction of the doctor blade receiver.
  13. Rotary printing machine according to one of claims 1 to 12, characterised in that the direction of movement of the doctor blade (9) is directed radially to the printing cylinder axis (14).
EP00975864A 1999-10-12 2000-10-12 Rotation printing machine Expired - Lifetime EP1246726B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19949099A DE19949099C2 (en) 1999-10-12 1999-10-12 Rotary screen printing machine
DE19949099 1999-10-12
PCT/EP2000/010053 WO2001026904A1 (en) 1999-10-12 2000-10-12 Rotation printing machine

Publications (2)

Publication Number Publication Date
EP1246726A1 EP1246726A1 (en) 2002-10-09
EP1246726B1 true EP1246726B1 (en) 2003-07-23

Family

ID=7925336

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Application Number Title Priority Date Filing Date
EP00975864A Expired - Lifetime EP1246726B1 (en) 1999-10-12 2000-10-12 Rotation printing machine

Country Status (5)

Country Link
EP (1) EP1246726B1 (en)
AT (1) ATE245533T1 (en)
AU (1) AU1384501A (en)
DE (1) DE19949099C2 (en)
WO (1) WO2001026904A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102014226869A1 (en) 2014-12-22 2016-06-23 Koenig & Bauer Ag Doctor device for a screen printing machine, screen printing machine and method for operating a doctor device
DE102015208916A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Doctor device, printing unit and method for operating a squeegee device
DE102015208915A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Machine for multi-stage processing and / or processing of sheet-shaped substrates as well as equipment and method for the production of printed products
DE102015208919A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Doctor device, printing unit and method for operating a squeegee device
WO2016180616A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Printing unit, and method for operating a squeegee device in a printing unit
DE102015208921A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag printing unit
DE102016206840A1 (en) 2016-04-22 2017-10-26 Koenig & Bauer Ag Printing unit of a printing machine that prints a sheet-shaped substrate

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EP2002978B2 (en) 2007-06-14 2024-01-17 Komori Corporation Liquid transfer member pressing force adjusting method and apparatus of rotary stencil printing plate liquid coating machine
JP5394646B2 (en) * 2007-06-14 2014-01-22 株式会社小森コーポレーション Method and apparatus for adjusting pressing force of liquid transfer member of rotary stencil liquid coating machine
DE102008025927A1 (en) 2008-05-29 2009-12-24 Zyrus Beteiligungsgesellschaft Mbh & Co. Patente I Kg Rotary press
DE102009037332A1 (en) 2009-08-14 2011-02-17 Zyrus Beteiligungsgesellschaft Mbh & Co. Patente I Kg Rotary screen printing apparatus and method
DE102012002848B4 (en) 2012-02-13 2015-03-26 Brigitta Elbers Rotary screen printing machine

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DE3629188A1 (en) * 1986-08-28 1988-03-17 Kuerten Rudolf August Method and device for applying the squeegee of a screen printing machine
JPH0832442B2 (en) * 1988-05-02 1996-03-29 桜精機株式会社 Gripper opening / closing device for cylinder type screen printing machine
JP2849933B2 (en) * 1989-12-26 1999-01-27 理想科学工業株式会社 Rotary stencil printing machine
JP2926502B2 (en) * 1990-02-20 1999-07-28 理想科学工業株式会社 Stencil printing machine
AU696709B2 (en) * 1995-01-24 1998-09-17 Kba-Notasys Sa Rotary screen printing machine for sheet printing

Cited By (17)

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DE102014226869A1 (en) 2014-12-22 2016-06-23 Koenig & Bauer Ag Doctor device for a screen printing machine, screen printing machine and method for operating a doctor device
WO2016102187A1 (en) 2014-12-22 2016-06-30 Koenig & Bauer Ag Squeegee device for a screen printing press, and method of operation
DE102014226869B4 (en) 2014-12-22 2022-03-17 Koenig & Bauer Ag Squeegee device for a screen printing machine and screen printing machine
RU2656971C1 (en) * 2014-12-22 2018-06-07 Кениг Унд Бауер Акциенгезельшафт Printing machine for securities with at least one printed unit and also the squeegee device operation method
DE102015208921A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag printing unit
WO2016180615A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Machine for the multistage machining and/or processing of sheet printing materials and system and method for producing printed products from sheet printing materials
WO2016180616A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Printing unit, and method for operating a squeegee device in a printing unit
DE102015208918A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Doctor device, printing unit and method for operating a squeegee device
DE102015208919A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Doctor device, printing unit and method for operating a squeegee device
WO2016180617A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Printing press and method for operating a squeegee device in a printing press
DE102015208915A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Machine for multi-stage processing and / or processing of sheet-shaped substrates as well as equipment and method for the production of printed products
DE102015208915B4 (en) 2015-05-13 2018-10-31 Koenig & Bauer Ag Machine for multi-stage processing and / or processing of sheet-shaped substrates as well as equipment and method for the production of printed products
DE102015208921B4 (en) 2015-05-13 2021-11-04 Koenig & Bauer Ag Printing unit
DE102015208916A1 (en) 2015-05-13 2016-11-17 Koenig & Bauer Ag Doctor device, printing unit and method for operating a squeegee device
DE102015208916B4 (en) 2015-05-13 2022-03-24 Koenig & Bauer Ag printing unit
DE102016206840A1 (en) 2016-04-22 2017-10-26 Koenig & Bauer Ag Printing unit of a printing machine that prints a sheet-shaped substrate
DE102016206840B4 (en) 2016-04-22 2019-01-17 Koenig & Bauer Ag Printing unit of a printing machine that prints a sheet-shaped substrate

Also Published As

Publication number Publication date
DE19949099A1 (en) 2001-04-19
AU1384501A (en) 2001-04-23
EP1246726A1 (en) 2002-10-09
WO2001026904A1 (en) 2001-04-19
DE19949099C2 (en) 2003-08-14
ATE245533T1 (en) 2003-08-15

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