EP0755785B1 - Device for attaching printing plates with means for reducing pressure-free zone - Google Patents
Device for attaching printing plates with means for reducing pressure-free zone Download PDFInfo
- Publication number
- EP0755785B1 EP0755785B1 EP96111368A EP96111368A EP0755785B1 EP 0755785 B1 EP0755785 B1 EP 0755785B1 EP 96111368 A EP96111368 A EP 96111368A EP 96111368 A EP96111368 A EP 96111368A EP 0755785 B1 EP0755785 B1 EP 0755785B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- printing forme
- printing form
- cylinder
- edge
- 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
Links
- 238000000034 method Methods 0.000 abstract description 6
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 210000002105 tongue Anatomy 0.000 description 2
- 238000003854 Surface Print Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002996 emotional effect Effects 0.000 description 1
- 210000004013 groin Anatomy 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
- B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
- B41F27/1243—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by pivotal or swivelling motion, e.g. by means of a rocking lever
Definitions
- the invention relates to a plate clamping device to reduce the pressure-free area around the circumference of a Printing form cylinder in the printing unit one Rotary printing press.
- EP 0 585 625 A1 relates to a device for fastening a flexible pressure plate.
- the two at the slot have adjacent legs, with one leg extended is and the bends of the pressure plate clamps.
- EP 0 531 741 A1 relates to a Plate front edge attachment of a pressure plate Printing machines.
- a clamping device has two at right angles flat clamping surfaces running to the cylinder radius, the an attachment of the printing plate leading edge without essential Allow deformation. This is achieved in that the Radius of the lateral surface of the plate cylinder in the area of Insertion opening for inserting the pressure plate is smaller than the cylinder radius, and that the cylinder radius at least is so large that by clamping a commercially available Pressure plate no permanent deformation of the same occur can.
- EP 0 592 856 A1 describes a clamping device for Attach a printing form on the surface of a Cylinders became known.
- a jig is supposed to to be manufactured with little effort, a quick clamping with Allow little effort and the printing form as possible low stress, so that their multiple use is possible.
- One in the canal A tension shaft arranged in a cylinder is a resilient element with two legs attached, whereby in the pretensioned state, seen in the direction of rotation of the cylinder, trailing first leg protrudes freely into the channel and the other leg the first Leg protrudes in the radial direction.
- trailing end of the printing form which is bent at an obtuse angle abuts an axially leading edge, which is part of the trailing side surface of the Channel is.
- This collecting device is particularly useful for Web rotary printing presses.
- EP 0 453 794 A1 relates to a method and a device for fastening a pressure plate on a cylinder with a narrow channel.
- a printing plate with an elongated End part is received in a narrow channel of a cylinder and on one curved side wall of the channel by a filled with resilient material Clamp held.
- the clamp pushes the extended end part of the pressure plate against the side wall in a direction normal to the side wall to the Reduce longitudinal stress on the end part.
- the front edge of the printing form is on attached to the opposite side of the channel.
- FR-A-1 265 837 discloses an attachment device for engraved printing plates, especially engraved gravure plates.
- the gravure plate in the clamping channel receiving cylinder, a locking element is provided, in which the front edge the gravure plate is locked.
- the rear edge of the rotogravure plate is with an insert proven, the front edge of which engages in a rotatable crossbar.
- the present invention is based on the object for fastening the end parts of a printing form on a Printing form cylinder necessary clamping channel and thus the non-printing area on the peripheral surface of the To minimize printing form cylinders.
- the solution according to the invention can be used in a simple manner achieved that a printing form edge during the Clamping process, caused by a projection in one Sidewall of the canal, in the tangential direction on it opposite printing form edge is pulled. Because on this way, the span width can be reduced consequently the unprinted zone in the print.
- the side wall of the channel with the projection bevelled is the side wall of the channel with the projection bevelled.
- the exciting printing form touches the projection linearly, so that the tangential Tractive force evenly across the width of the cylinder Printing form is initiated.
- the Projection over the entire width of the printing form; in the area of the projection can the side wall of the channel with a hardened coating.
- the clamping element which is the printing form edge to be clamped touches linearly, is resilient in a twistable Traverse in the lower part of the channel of the printing form cylinder let in. In the exciting state of the printing plate edge can the clamping element resiliently to the printing form edge be employed and locked in this position.
- Fig. 1 shows a greatly enlarged section the channel of a printing form cylinder.
- a printing couple cylinder 1 - here the printing form cylinder - comprises a channel 2, which is axially parallel to the axis of rotation of the Printing form cylinder extends.
- the ends of a printing form 3, that is, the printing form leading edge 4 and the Printing form trailing edge 5, are hung in the channel 2.
- the printing form leading edge 4 lies on a front Side wall 8 of the channel 2, while the Printing form trailing edge 5 in the tensioned state - reproduced through position 5.5 - on the rear side wall 9 of the Channel 2 is present.
- the Printing form trailing edge 5 successively according to Insertion positions 5.1, 5.2 and 5.3 in position 5.4 emotional.
- the envelope that the printing form trailing edge 5 during describes the insertion process is with reference numeral 6 designated.
- one of the side walls 8, 9 of the channel 2 a Has recess 10, below which a projection 11th is shown. Both the recess 10 and the Projection 11 extend across the entire width of the Printing forme cylinder 1.
- the side wall 9 of the channel 2 can Area of the projection 11 by means of a known Hardening process to be hardened to prevent wear. It is also conceivable to have one in the side wall 9 of the channel 2 Groin or similar, parallel to the axis of rotation of the cylinder 1 extending body made of wear-resistant To provide material having a projection 11 as shown in FIG. 1st having.
- clamping element 7 which of a provisional Clamping position 7.1 in a clamping position 7.2 and vice versa is movable.
- the printing form leading edge 4 fixed.
- the leading edge 4 of the printing form is secured.
- the printing form leading edge 4 by the provisional Clamping position 7.1 held. If the clamping element 7 in the Position 7.2 - the clamping position - set, it happens a linear contact on the Contact point between the clamping element 7 and the Printing form trailing edge 5.
- Fig. 2 shows a larger section of the end face of a printing form cylinder.
- the printing form leading edge 4 and the printing form trailing edge 5 are shown reduced, as is the representation of the clamping element 7 in its positions 7.1 and 7.2.
- the clamping element 7 - be it a continuous component or several individual tongues - is received in a cross member 12, which is rotatable in a bore 13 in the printing form cylinder 1.
- the cross member 12 is provided with a lever 14 which can be pivoted via an actuator 17 - for example a pneumatic cylinder.
- an actuator 17 for example a pneumatic cylinder.
- a bolt 16 is provided which extends through both the lever 14 and a fork 15, the fork 15 being adjustable by the actuator 17.
- the actuator 17 itself can be received in a rotatable abutment 18 on an end face of the printing form cylinder 1; an arrangement on both end faces of the printing form cylinder 1 would also be conceivable.
- the actuator 17 in the example shown here is a pneumatic cylinder, the chambers of which are acted upon by a pressure medium via connections 19.
- An electric motor or a hydraulic cylinder or the like could also be used to actuate the crossmember 12.
- Fig. 2 denote by the solid lines positions of components 17, 15, 16, 14 and 7 shown the clamping position 7.2 of the printing form trailing edge 5 by the Clamping element 7, while that with dashed lines positions of components 17, 15, 16, 14 and 7 shown the provisional clamping position 7.1 of the Corresponding printing plate leading edge 4 through the clamping element 7.
Abstract
Description
Die Erfindung bezieht sich auf eine Plattenklemmvorrichtung zur Reduzierung des druckfreien Bereiches am Umfang eines Druckformzylinders in dem Druckwerk einer Rotationsdruckmaschine.The invention relates to a plate clamping device to reduce the pressure-free area around the circumference of a Printing form cylinder in the printing unit one Rotary printing press.
EP 0 585 625 A1 betrifft eine Vorrichtung zum Befestigen einer biegsamen Druckplatte. In einen Zylinderschlitz sind mehrere blattförmige Federn eingefügt, die zwei am Schlitz anliegende Schenkel aufweisen, wobei ein Schenkel verlängert ist und die Abkantungen der Druckplatte spannt.EP 0 585 625 A1 relates to a device for fastening a flexible pressure plate. Are in a cylinder slot several leaf-shaped springs inserted, the two at the slot have adjacent legs, with one leg extended is and the bends of the pressure plate clamps.
EP 0 531 741 A1 bezieht sich auf eine Plattenvorderkantenbefestigung einer Druckplatte an Druckmaschinen. Eine Klemmeinrichtung weist zwei rechtwinklig zum Zylinderradius verlaufende ebene Klemmflächen auf, die eine Befestigung der Druckplattenvorderkante ohne wesentliche Verformung ermöglichen. Dies wird dadurch erzielt, daß der Radius der Mantelfläche des Plattenzylinders im Bereich der Einführungsöffnung zum Einführen der Druckplatte kleiner ist als der Zylinderradius, und daß der Zylinderradius mindestens so groß ist, daß durch das Spannen einer handelsüblichen Druckplatte keine bleibende Verformung derselben auftreten kann.EP 0 531 741 A1 relates to a Plate front edge attachment of a pressure plate Printing machines. A clamping device has two at right angles flat clamping surfaces running to the cylinder radius, the an attachment of the printing plate leading edge without essential Allow deformation. This is achieved in that the Radius of the lateral surface of the plate cylinder in the area of Insertion opening for inserting the pressure plate is smaller than the cylinder radius, and that the cylinder radius at least is so large that by clamping a commercially available Pressure plate no permanent deformation of the same occur can.
Aus EP 0 592 856 A1 ist eine Aufspannvorrichtung zum Befestigen einer Druckform auf der Mantelfläche eines Zylinders bekannt geworden. Eine Aufspannvorrichtung soll mit geringem Aufwand zu fertigen sein, ein schnelles Spannen mit geringem Kraftaufwand ermöglichen und die Druckform möglichst gering beanspruchen, so daß deren Mehrfachverwendung möglich ist. An einer im Kanal eines Zylinders angeordneten Spannwelle ist ein federndes Element mit zwei Schenkeln befestigt, wobei im vorgespannten Zustand der, in Drehrichtung des Zylinders gesehen, nachlaufende erste Schenkel frei in den Kanal ragt und der andere Schenkel den ersten Schenkel in radialer Richtung überragt. Des weiteren besteht die Lösung darin, daß das nachlaufende Ende der Druckform, welches in einem stumpfen Winkel abgekantet ist, an einer axial vorlaufenden Kante anliegt, die Bestandteil der nachlaufenden Seitenfläche des Kanals ist. Der Einsatz dieser Auffangvorrichtung bietet sich insbesondere bei Rollenrotationsdruckmaschinen an.EP 0 592 856 A1 describes a clamping device for Attach a printing form on the surface of a Cylinders became known. A jig is supposed to to be manufactured with little effort, a quick clamping with Allow little effort and the printing form as possible low stress, so that their multiple use is possible. One in the canal A tension shaft arranged in a cylinder is a resilient element with two legs attached, whereby in the pretensioned state, seen in the direction of rotation of the cylinder, trailing first leg protrudes freely into the channel and the other leg the first Leg protrudes in the radial direction. Furthermore, the solution is that trailing end of the printing form, which is bent at an obtuse angle abuts an axially leading edge, which is part of the trailing side surface of the Channel is. The use of this collecting device is particularly useful for Web rotary printing presses.
EP 0 453 794 A1 bezieht sich auf ein Verfahren und eine Vorrichtung zum Befestigen einer Druckplatte auf einem Zylinder mit engem Kanal. Eine Druckplatte mit verlängertem Endteil wird in einem engen Kanal eines Zylinders aufgenommen und an einer gekrümmten Seitenwand des Kanals durch ein mit nachgiebigem Material ausgefülltes Klemmstück gehalten. Das Klemmstück drückt das verlängerte Endteil der Druckplatte gegen die Seitenwand in einer zur Seitenwand normalen Richtung, um die Längsbeanspruchung des Endteils zu reduzieren. Die Vorderkante der Druckform wird an der gegenüberliegenden Seite des Kanals befestigt. Beim Demontieren der Platte von dem Zylinder wird zunächst das verlängerte Endteil aus dem Kanal des Druckformzylinders entfernt.EP 0 453 794 A1 relates to a method and a device for fastening a pressure plate on a cylinder with a narrow channel. A printing plate with an elongated End part is received in a narrow channel of a cylinder and on one curved side wall of the channel by a filled with resilient material Clamp held. The clamp pushes the extended end part of the pressure plate against the side wall in a direction normal to the side wall to the Reduce longitudinal stress on the end part. The front edge of the printing form is on attached to the opposite side of the channel. When disassembling the plate from that The cylinder first becomes the extended end part from the channel of the printing form cylinder away.
Bei der Lösung gemäß EP 0 453 794 A1 ist es erforderlich, Druckformen mit einem verlängerten Endteil herzustellen, welches mit zwei Knicken versehen wird, um eine Krümmung desselben in Richtung einer Seitenwand des Kanals zu erzielen.In the solution according to EP 0 453 794 A1 it is necessary to use printing forms with a to produce an elongated end part, which is provided with two kinks to form one To achieve the same curvature towards a side wall of the channel.
FR-A-1 265 837 offenbart eine Befestigungseinrichtung für gravierte Druckplatten,
insbesondere gravierte Tiefdruckplatten. Im Spannkanal eines die Tiefdruckplatte
aufnehmenden Zylinders ist ein Arretierelement vorgesehen, in welches die Vorderkante
der Tiefdruckplatte arretiert ist. Die Hinterkante der Tiefdruckplatte ist mit einem Einsatz
bewährt, dessen Vorderkante in eine verdrehbare Traverse eingreift. Bei Verdrehen der
Traverse bewegt sich die mit einem Einsatz bewährte Hinterkante der Tiefdruckplatte um
einen Vorsprung 13 der in einer Seitenwand des Kanales ausgeführt ist. FR-A-1 265 837 discloses an attachment device for engraved printing plates,
especially engraved gravure plates. The gravure plate in the clamping channel
receiving cylinder, a locking element is provided, in which the front edge
the gravure plate is locked. The rear edge of the rotogravure plate is with an insert
proven, the front edge of which engages in a rotatable crossbar. When twisting the
Traverse moves around the tried and tested insert edge of the gravure plate
a
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, den zur Befestigung der Endteile einer Druckform auf einem Druckformzylinder notwendigen Spannkanal und damit den nichtdruckenden Bereich auf der Umfangsfläche des Druckformzylinders zu minimieren.The present invention is based on the object for fastening the end parts of a printing form on a Printing form cylinder necessary clamping channel and thus the non-printing area on the peripheral surface of the To minimize printing form cylinders.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des
Patentanspruches 1 gelöst.According to the invention, this object is achieved through the features of
Mittels der erfindungsgemäßen Lösung kann auf einfache Weise erreicht werden, daß eine Druckformkante während des Spannvorgangs, bewirkt durch einen Vorsprung in einer Seitenwand des Kanals, in tangentialer Richtung auf die ihr gegenüberliegende Druckformkante gezogen wird. Da sich auf diese Weise die Spannkanalbreite reduzieren läßt, reduziert sich folglich die nicht bedruckte Zone im Druck. Eine Druckform, deren Plattenkanten-Endteile unterschiedlich lang sein müßten, ist nicht erforderlich.The solution according to the invention can be used in a simple manner achieved that a printing form edge during the Clamping process, caused by a projection in one Sidewall of the canal, in the tangential direction on it opposite printing form edge is pulled. Because on this way, the span width can be reduced consequently the unprinted zone in the print. A Printing form, the plate edge end parts of different lengths should be, is not necessary.
In einer weiteren Ausgestaltung der erfindungsgemäßen Lösung ist die den Vorsprung aufweisende Seitenwand des Kanals mit einer Anschrägung versehen. Die zu spannende Druckform berührt den Vorsprung linienförmig, so daß die tangentiale Zugkraft gleichmäßig über die Breite des Zylinders in die Druckform eingeleitet wird. Ferner erstreckt sich der Vorsprung über die gesamte Breite der Druckform; im Bereich des Vorsprungs kann die Seitenwand des Kanals mit einer gehärteten Beschichtung versehen sein. Auch kann ein besonders verschleißfestes Material als Leiste oder Stange derart in die Seitenwand des Kanals eingelassen sein, daß dieses den Vorsprung bildet, um welchen die Druckformkante beim Spannen auf der Mantelfläche des Zylinders gezogen wird.In a further embodiment of the solution according to the invention is the side wall of the channel with the projection bevelled. The exciting printing form touches the projection linearly, so that the tangential Tractive force evenly across the width of the cylinder Printing form is initiated. Furthermore, the Projection over the entire width of the printing form; in the area of the projection can the side wall of the channel with a hardened coating. Also one can particularly wear-resistant material as a bar or bar be embedded in the side wall of the channel in such a way that this forms the projection around which the printing form edge is pulled on the outer surface of the cylinder during tensioning.
Das Spannelement, welches die zu spannende Druckformkante linienförmig berührt, ist federnd in eine verdrehbare Traverse im unteren Teil des Kanals des Druckformzylinders eingelassen. In dem die Druckformkante spannenden Zustand kann das Spannelement federnd an die Druckformkante angestellt werden und in dieser Position arretiert sein.The clamping element, which is the printing form edge to be clamped touches linearly, is resilient in a twistable Traverse in the lower part of the channel of the printing form cylinder let in. In the exciting state of the printing plate edge can the clamping element resiliently to the printing form edge be employed and locked in this position.
Weitere Details des Gegenstands der vorliegenden Erfindung werden in der folgenden Beschreibung im Zusammenhang mit den beigefügten, nachstehend erläuterten Zeichnungen weiter verdeutlicht.Further details of the subject of the present invention are related to the following description the accompanying drawings explained below clarifies.
Es zeigen:
- Fig. 1
- einen vergrößert dargestellten Ausschnitt eines Kanals in einem Druckformzylinder; und
- Fig. 2
- einen Druckformzylinder mit der erfindungsgemäßen Einrichtung und einer Anordnung zum Betätigen derselben.
- Fig. 1
- an enlarged section of a channel in a printing form cylinder; and
- Fig. 2
- a printing form cylinder with the device according to the invention and an arrangement for actuating the same.
Fig. 1 zeigt einen stark vergrößert dargestellten Ausschnitt des Kanals eines Druckformzylinders.Fig. 1 shows a greatly enlarged section the channel of a printing form cylinder.
Ein Druckwerkzylinder 1 - hier der Druckformzylinder - umfaßt
einen Kanal 2, der sich axial parallel zur Rotationsachse des
Druckformzylinders erstreckt. Die Enden einer Druckform 3,
das heißt, die Druckformvorderkante 4 sowie die
Druckformhinterkante 5, werden in dem Kanal 2 eingehangen.
Die Druckformvorderkante 4 liegt an einer vorderen
Seitenwand 8 des Kanals 2 an, während die
Druckformhinterkante 5 im gespannten Zustand - wiedergegeben
durch Position 5.5 - an der hinteren Seitenwand 9 des
Kanals 2 anliegt. Nachdem die Druckformvorderkante 4 in dem
Kanal 2 eingehangen ist, wie gezeigt, wird die
Druckformhinterkante 5 sukzessive gemäß den
Einführpositionen 5.1, 5.2 und 5.3 in die Position 5.4
bewegt. Die Hüllkurve, die die Druckformhinterkante 5 während
des Einführvorgangs beschreibt, ist mit dem Bezugszeichen 6
bezeichnet. In der Darstellung gemäß der Fig. 1 ist
erkennbar, daß eine der Seitenwände 8, 9 des Kanals 2 eine
Ausnehmung 10 aufweist, unterhalb der ein Vorsprung 11
dargestellt ist. Sowohl die Ausnehmung 10 als auch der
Vorsprung 11 erstrecken sich über die gesamte Breite des
Druckformzylinders 1. Die Seitenwand 9 des Kanals 2 kann im
Bereich des Vorsprungs 11 mittels eines bekannten
Härtungsverfahrens gehärtet sein, um Verschleiß vorzubeugen.
Ferner ist auch denkbar, in der Seitwand 9 des Kanals 2 eine
Leiste oder einen ähnlich, sich parallel zur Rotationsachse
des Zylinders 1 erstreckenden Körper aus verschleißfestem
Material vorzusehen, der einen Vorsprung 11 gemäß Fig. 1
aufweist.A printing couple cylinder 1 - here the printing form cylinder - comprises
a
Um unteren Bereich des Kanals 2 ist in der Fig. 1 ein
Spannelement 7 zu erkennen, welches von einer provisorischen
Spannstellung 7.1 in eine Spannstellung 7.2 und umgekehrt
bewegbar ist. In der provisorischen Spannstellung 7.1 wird
die Druckformvorderkante 4 fixiert. Während des Aufbringens
der Druckform 3 auf den Umfang des Druckformzylinders 1 wird
auf diese Weise die Druckformvorderkante 4 gesichert. Auch
während der Demontage der Druckform 3 vom Druckwerkzylinder 1
wird die Druckformvorderkante 4 durch die provisorische
Spannstellung 7.1 gehalten. Wird das Spannelement 7 in die
Position 7.2 - die Spannstellung - gestellt, kommt es zu
einer linienförmig verlaufenden Berührung an der
Kontaktstelle zwischen Spannelement 7 und der
Druckformhinterkante 5. Während des Spannvorgangs an der
Druckformhinterkante 5 bewegt sich der über den Vorsprung 11
hinausragende Bereich der Druckformhinterkante 5 in seine
Anschlagposition 5.5. Der Vorsprung 11 dient als
Schwenkpunkt, um welchen sich die Druckformhinterkante 5
bewegt, so daß sich die Umfangsfläche 20 der Druckform in
Richtung der Mitte des Kanals 2 bewegt. Durch die
Schwenkbewegung der Druckformhinterkante 5 um den
Vorsprung 11 wird eine tangential wirkende Kraft in die
Druckform 3 eingeleitet, die eine Reduzierung des druckfreien
Spaltes am Kanal 2 bewirkt, da sich die
Druckformvorderkante 4 und die Druckformhinterkante 5 am
Umfang des Druckformzylinders 1 aufeinanderzubewegen.1 is around the lower region of the
Ist die Druckformhinterkante 5 durch das Spannelement 7 in
die Anschlagposition 5.5 bewegt worden, dann ist die
Druckform 3 auf der Mantelfläche des Druckformzylinders 1
gespannt. Das Spannelement 7 wird nunmehr in seiner
Spannposition 7.2 arretiert, so daß die Druckformbefestigung
aufrechterhalten bleibt. Das Spannelement 7 kann sich
ebenfalls über die Breite des Kanals 2 im Druckformzylinder 1
erstrecken oder aus einzelnen federnden Zungen bestehen. Wenn
sich die Druckformhinterkante 5 in ihrer Anschlagposition 5.5
befindet, ist das Spannelement 7 federnd an dieser
angestellt.Is the printing form
Fig. 2 zeigt einen größeren Ausschnitt der Stirnseite eines
Druckformzylinders.
Die Druckformvorderkante 4 und die Druckformhinterkante 5
sind verkleinert wiedergegeben, sowie auch die Darstellung
des Spannelements 7 in seinen Positionen 7.1 und 7.2. Das
Spannelement 7 - sei es ein durchgängiges Bauteil oder
mehrere einzelne Zungen - ist in einer Traverse 12
aufgenommen, die in einer Bohrung 13 des Druckformzylinders 1
drehbar ist. Die Traverse 12 ist mit einem Hebel 14 versehen,
der über ein Stellorgan 17 - beispielsweise einen
Pneumatikzylinder - schwenkbar ist. An dem von der
Traverse 12 abgewandten Ende des Hebels 14 ist ein Bolzen 16
vorgesehen, der sowohl den Hebel 14 als auch eine Gabel 15
durchgreift, wobei die Gabel 15 durch das Stellorgan 17
verstellbar ist. Das Stellorgan 17 selbst kann in einem
verdrehbaren Widerlager 18 an einer Stirnseite des
Druckformzylinders 1 aufgenommen sein; auch eine Anordnung an
beiden Stirnseiten des Druckformzylinders 1 wäre denkbar. Bei
dem Stellorgan 17 in dem hier gezeigten Beispiel handelt es
sich um einen Pneumatikzylinder, dessen Kammern über
Anschlüsse 19 mit einem Druckmedium beaufschlagt sind. Es
könnte auch ein Elektromotor oder ein Hydraulikzylinder oder
dergleichen zur Betätigung der Traverse 12 eingesetzt werden.Fig. 2 shows a larger section of the end face of a printing form cylinder.
The printing form leading edge 4 and the printing
In Fig. 2 bezeichnen die mit durchgezogenen Linien
dargestellten Positionen der Komponenten 17, 15, 16, 14 und 7
die Spannposition 7.2 der Druckformhinterkante 5 durch das
Spannelement 7, während die mit gestrichelten Linien
dargestellten Positionen der Komponenten 17, 15, 16, 14 und 7
der provisorischen Spannposition 7.1 der
Druckformvorderkante 4 durch das Spannelement 7 entsprechen. In Fig. 2 denote by the solid lines
positions of
- 11
- DruckwerkzylinderPrinting cylinder
- 22nd
- Kanalchannel
- 33rd
- DruckformPrinting form
- 44th
- DruckformvorderkantePrinting form front edge
- 55
- DruckformhinterkantePrinting form trailing edge
- 5.15.1
- EinführpositionInsertion position
- 5.25.2
- ""
- 5.35.3
- ""
- 5.45.4
- ""
- 5.55.5
- AnschlagpositionStop position
- 66
- HüllkurveEnvelope
- 77
- SpannelementClamping element
- 7.17.1
- provisorische Spannstellungprovisional clamping position
- 7.27.2
- SpannstellungClamping position
- 88th
- vordere Kanalseitenwandfront channel side wall
- 99
- hintere Kanalseitenwandrear channel side wall
- 1010th
- AnschrägungBevel
- 1111
- Vorsprunghead Start
- 1212th
- Traversetraverse
- 1313
- Bohrungdrilling
- 1414
- Hebellever
- 1515
- Gabelfork
- 1616
- Bolzenbolt
- 1717th
- StellorganActuator
- 1818th
- WiderlagerAbutment
- 1919th
- Anschlüsseconnections
- 2020th
- Umfangsfläche - DruckformCircumferential surface - printing form
Claims (8)
- A device for securing printing formes (3) on the circumference of a printing forme cylinder (1), wherein a leading edge (4) and a trailing edge (5) of a printing forme (3) are received in a gap (2) and, in a clamped state of the printing forme (3), engage the side walls (8, 9) of the gap (2), with a rotatable cross-bar (12) received in the gap (2), and with a clamping element (7) for acting upon one of the edges (4, 5) of the printing forme (3), the clamping element being secured to the cross-bar (12), and with a protrusion (11) formed on one of the side walls (8, 9) of the gap (2), said protrusion extending over the width of the printing forme cylinder (1) and the trailing edge (5) of the printing forme (3) moving towards the leading edge (4) of the printing forme (3) along the circumference of the printing forme cylinder (1)
characterized in that
the trailing edge (5) of the printing forme (3) is clampable in a tangential direction on the printing forme cylinder (1) during the clamping operation by the clamping element (7) which resiliently engages the trailing edge (5) and by which the leading edge (4) of the printing forme (3) is also securable. - Device for securing printing formes according to claim 1, characterized in that said side wall (9) formed with said protrusion (11) is also formed with an inclination (10).
- Device for securing printing forms according to claim 1, characterized in that the clamping element (7) is in linear engagement with the printing forme edge (5).
- Device for securing printing forms according to claim 1, characterized in that said protrusion (11) in said side wall (9) of the gap (2) is hardened.
- Device for securing printing formes according to claim 1, characterized in that said protrusion (11) is formed on a rod-shaped element embedded in said side wall (9) of the gap (2) and extending axially over the width of the printing forme cylinder (1).
- Device for securing printing formes according to claim 1, characterized in that the clamping element (7) is embedded resiliently in the operable cross-bar (12).
- Device for securing printing formes according to claim 1, wherein the clamping element (7), in a state (7.2) wherein it clamps the printing forme (3) resiliently engages the printing forme edge (5) and is locked in this position.
- Device for securing printing forms according to one or more of claims 1 to 7, wherein, during mounting or removal of the printing forme (3), the clamping element (7) retains the leading edge (4) of the printing forme (3) in a provisional clamping position (7.1) in the gap of in the printing forme cylinder (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9509001A FR2737149B1 (en) | 1995-07-25 | 1995-07-25 | DEVICE FOR FIXING A PRINTING PLATE ON A PLATE-HOLDING CYLINDER |
| FR9509001 | 1995-07-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0755785A1 EP0755785A1 (en) | 1997-01-29 |
| EP0755785B1 true EP0755785B1 (en) | 2001-04-04 |
Family
ID=9481341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96111368A Expired - Lifetime EP0755785B1 (en) | 1995-07-25 | 1996-07-15 | Device for attaching printing plates with means for reducing pressure-free zone |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5778786A (en) |
| EP (1) | EP0755785B1 (en) |
| AT (1) | ATE200249T1 (en) |
| DE (2) | DE19619941A1 (en) |
| FR (1) | FR2737149B1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10058996C1 (en) | 2000-11-28 | 2002-06-13 | Koenig & Bauer Ag | Pulling-up mechanism fixing device has channel with single one-lever fixing device in each section perpendicular to axial direction of cylinder |
| DE10060984B4 (en) * | 2000-12-08 | 2006-10-26 | Man Roland Druckmaschinen Ag | Vorichtung for attaching a clothing on a printing cylinder |
| DE10208262A1 (en) | 2002-02-26 | 2003-09-04 | Roland Man Druckmasch | Device for fastening a covering on a printing unit cylinder |
| DE10261954B4 (en) | 2002-04-25 | 2006-08-03 | Koenig & Bauer Ag | Cylinder of a rotary printing machine |
| DE10218475B4 (en) * | 2002-04-25 | 2006-06-29 | Koenig & Bauer Ag | Cylinder of a rotary printing machine with a lift |
| DE10250684B3 (en) * | 2002-10-31 | 2004-04-01 | Koenig & Bauer Ag | Production of a rotational body of a printing machine comprises forming profiled bodies by welding material to opposite-lying walls of a groove in the peripheral direction of the balls in the machine |
| FR2898297B1 (en) * | 2006-03-08 | 2010-03-12 | Goss Int Montataire Sa | PLATE CYLINDER AND CORRESPONDING ROTARY PRESS. |
| US10737481B2 (en) * | 2017-07-03 | 2020-08-11 | Manroland Goss Web Systems Gmbh | Plate cylinder with plate lockup mechanism and related printing press and method |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125023A (en) * | 1964-03-17 | Blanket tensioning means for the impression | ||
| US948157A (en) * | 1909-05-13 | 1910-02-01 | Alexander Bevan | Surfacing-roll. |
| US2900904A (en) * | 1953-06-08 | 1959-08-25 | Hantscho George | Printing press rollers |
| US2837025A (en) * | 1956-05-08 | 1958-06-03 | American Can Co | Clamping and tensioning device |
| FR1265837A (en) * | 1959-10-29 | 1961-07-07 | Goebel Gmbh Maschf | Fixing device for flexible engraved plates, in particular plates for intaglio printing on steel |
| DE1228627B (en) * | 1964-04-25 | 1966-11-17 | Roland Offsetmaschf | Device for fastening a flexible printing plate on the forme cylinder of a rotary printing press |
| US3362327A (en) * | 1965-01-28 | 1968-01-09 | Cottrell Company | Cylinder lockup for wrap-around plates and blankets |
| DE4005093C1 (en) * | 1990-02-17 | 1991-06-20 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | Forme clamp for printing cylinder - has channel in cylinder with spindle to clamp form eccentrically |
| CA2038809C (en) * | 1990-04-24 | 1998-12-08 | Albert Gevis | Narrow gap plate mounting apparatus and method |
| DE4129046A1 (en) * | 1991-08-31 | 1993-03-11 | Heidelberger Druckmasch Ag | PLATE FRONT EDGE FASTENING OF A PRINT PLATE ON PRINTING MACHINES |
| DE4225949C2 (en) * | 1992-08-06 | 1994-10-13 | Roland Man Druckmasch | Device for attaching a flexible pressure plate |
| DE4234332A1 (en) * | 1992-10-12 | 1994-04-14 | Heidelberger Druckmasch Ag | Clamping device for attaching a flexible printing form to the outer surface of a cylinder |
| DE4335140C1 (en) * | 1993-10-15 | 1995-02-02 | Roland Man Druckmasch | Device for attaching a flexible printing plate |
-
1995
- 1995-07-25 FR FR9509001A patent/FR2737149B1/en not_active Expired - Fee Related
-
1996
- 1996-05-17 DE DE19619941A patent/DE19619941A1/en not_active Withdrawn
- 1996-07-15 DE DE59606691T patent/DE59606691D1/en not_active Expired - Lifetime
- 1996-07-15 EP EP96111368A patent/EP0755785B1/en not_active Expired - Lifetime
- 1996-07-15 AT AT96111368T patent/ATE200249T1/en not_active IP Right Cessation
- 1996-07-25 US US08/686,357 patent/US5778786A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2737149B1 (en) | 1997-10-17 |
| DE59606691D1 (en) | 2001-05-10 |
| ATE200249T1 (en) | 2001-04-15 |
| DE19619941A1 (en) | 1997-01-30 |
| FR2737149A1 (en) | 1997-01-31 |
| EP0755785A1 (en) | 1997-01-29 |
| US5778786A (en) | 1998-07-14 |
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