EP0628411B1 - Device for securing a flexible printing plate - Google Patents

Device for securing a flexible printing plate Download PDF

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Publication number
EP0628411B1
EP0628411B1 EP94108563A EP94108563A EP0628411B1 EP 0628411 B1 EP0628411 B1 EP 0628411B1 EP 94108563 A EP94108563 A EP 94108563A EP 94108563 A EP94108563 A EP 94108563A EP 0628411 B1 EP0628411 B1 EP 0628411B1
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EP
European Patent Office
Prior art keywords
clamping
cylinder
clamping bar
bore
forme cylinder
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
EP94108563A
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German (de)
French (fr)
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EP0628411A1 (en
Inventor
Gunnar Rau
Karl-Heinz Müller
Heinrich Schmid
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Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Filing date
Publication date
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Publication of EP0628411A1 publication Critical patent/EP0628411A1/en
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    • 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
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means

Definitions

  • the invention relates to a device for fastening a flexible pressure plate according to the preamble of claim 1.
  • DE 31 16 506 C2 shows a device for fastening a flexible pressure plate that is a pit with two acute angles to the Includes pit walls running along the cylindrical surface.
  • To the tension serve two clamping bodies divided in the longitudinal direction of the pit, the clamp the plate legs between yourself and a pit wall.
  • the plate tension enables an automatic plate change, however, it requires one because of the space required for the sprags wide clamping channel, which equates to a loss of printing area.
  • EP-A 0 330 736 shows a clamping pit with an acute angle and one perpendicular to the pit wall running along the cylindrical surface. Work with the pit walls roller-shaped clamp body together, which resiliently at the bottom of the Cylinder pit supporting clamping beams are fixed.
  • this object is achieved with a generic Device through the application of the characteristics of the mark of the Claim 1 solved. Because the device only one Has clamping body, the clamping channel can be kept narrow.
  • the forme cylinder 1 shown in detail in FIG. 1, that is not the subject of the claims in the form shown in FIG. 1, has one cylinder pit 2 running in the axial direction. This contains one acute and an approximately perpendicular to the cylinder jacket Pit wall 3, 4.
  • a clamp body works with the pit walls 3, 4 5 together, the clamping surfaces 6, 7 which are advantageously parallel to them owns.
  • the clamping body 5 is fixed to a clamping beam 8 arranged, which is by means of compression springs 9 in the bottom of Cylinder pit 2 supports. Of the Tension bar 8 together with the clamping body 5 extends at least across the width of the printing plate 11.
  • the pressure plate 11 with its leading plate leg 12 on that formed by the cylindrical surface and the pit wall 3 Channel edge hooked in. It is between the pit wall 3 and the clamping surface 6 clamped. At a subsequent one Rotation of the forme cylinder 1 is the printing plate on this rolled up, advantageously using a pressure roller or the employed rubber cylinder. Finally, the trailing one Plate leg 13 between the pit wall 4 and the clamping body 5 indented. The plate legs 12, 13 are inserted by Insertion bevels on the clamp body 5 facilitated. To remove the Pressure plate 11, the clamping body 5 together with the clamping beam 8 by means of the plate release 14 against the force of the springs 9 deeper pressed into the cylinder pit 2.
  • Fig. 2 shows a forme cylinder 16, in which a clamping bar 17 in the cylinder pit 18 to the ends of the cylinder jacket, to the bearer rings 19, 20, is enough.
  • the sprag is out lined up clamp pieces 21 which are resilient in Tension bars 17 are added.
  • the division into clamping pieces brings Manufacturing advantages.
  • the cylinder pit 18 is correct with the geometry of the cylinder pit according to FIG. 1. Only the channel width may be narrower in the clamping pit 18 are held, since from explanations made below in the Fig. 1 required plate solver 14 can be omitted.
  • the tension beam 17 is supported by compression springs 23 in the bottom of the cylinder pit 18 from (Fig. 3).
  • Each clamping piece 21 is in a groove 24 of the Clamping beam 17 added (Fig. 4). It is supported by springs 25 in the bottom of the groove.
  • Each clamping piece has unspecified Clamping surfaces analogous to those of the clamping body from Fig. 1.
  • At the Bottom of each clamping piece 21 are two by means of screws 26 Screwed sleeves 27 (Fig. 5) with which the clamping pieces 21 in Bores 28 of the clamping beam 17 are slidably guided in the clamping direction will.
  • Between the sleeve 27 and the head of the screw 26 is one Intermediate disc 29, which covers the bore 28.
  • the clamping pieces 21 could also be guided in some other way, for example by means of pins or the side walls of the groove 24.
  • a plunger 32, 33 is arranged, the through a bore 34, 35 of the cylinder jacket of the forme cylinder 16 is movable in the radial direction on the clamping beam 17.
  • the clamping of the pressure plate 22 is carried out in the same way as in the previous embodiment according to FIG. 1.
  • the plate legs are from the clamping pieces 21, the spring-loaded clamping beam are pressed into the wedge formed by the pit walls, curious; excited.
  • these springs something in the clamping beam 17, whereby between the Stop disk 29 and the bore 28 forms a gap.
  • the plate cylinder 16 is positioned so that the Bores 34, 35 of the cylinder jacket under the plungers 32, 33 to come to lie.
  • the plunger 32, 33 is extended, the clamping beam 17 against the force of the compression springs 23 in the direction of the bottom of the Tension pit 18 pressed.
  • FIG. 6 and 10 show alternative variants to FIG. 2 Actuation of clamping bars. Only the is shown Actuator at the left end of the forme cylinder jacket. A similar device is at the right end of the jacket. 6, the clamping bar 37 extends up to the bearer ring 38 and ends in the area of a pressure chamber 39. The latter has a radially deflectable on the clamping beam 37 Membrane 40 and is above a leading through the cylinder jacket Connection bore 41 in connection with the outside atmosphere. On the latter is the connecting shoe 43 by means of a lifting device 42 a compressed air source.
  • the connecting shoe 43 has the Curvature of the cylinder jacket on (Fig. 7), and its connection opening 44 advantageously has the shape of an elongated hole (FIG. 8). Thanks to this Elongated hole shape needs the for releasing the pressure plate Connection bore 41 not exactly under the connection shoe 43 to be positioned.
  • connection bore 45 of a pressure chamber out of the forme cylinder 46.
  • connection opening 47 of the connection shoe 48 in the form of a Circular segment executed, and the latter is of a flat Surround the sealing surface.
  • the forme cylinder 36 with its Connection bore 41 positioned under the connection shoe 43.
  • the pressure chamber 39 is filled with compressed air, whereupon the membrane 40 presses the tensioning beam 37 inwards.
  • the plate legs Approved.
  • the clamping bar 49 of the forme cylinder 50 has a inclined level 51.
  • One attached to the machine side wall 52 Ram 53 also carries an inclined plane 54.
  • the inclined planes 51 and 54 slide on each other and move the tensioning beam 49 radially inwards, the Plate legs are released. The further loosening and also that The printing plates are tensioned as in the first Embodiment specified.
  • the forme cylinder has only one Cylinder pit for tensioning a pressure plate. Also for Scope of protection of the patent can belong to the circumference of the forme cylinder evenly distributed several pits to tension one corresponding number of printing plates.

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

Description

Die Erfindung betrifft eine Vorrichtung zum Befestigen einer biegsamen Druckplatte nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for fastening a flexible pressure plate according to the preamble of claim 1.

Die DE 31 16 506 C2 zeigt eine Vorrichtung zum Befestigen einer biegsamen Druckplatte, die eine Spanngrube mit zwei spitzwinklig zur Zylindermantelfläche verlaufende Grubenwände enthält. Zur Spannung dienen zwei in Grubenlängsrichtung geteilte Klemmkörper, die zwischen sich und einer Grubenwand die Plattenschenkel klemmen. Zwar ermöglicht die Plattenspannung einen automatischen Plattenwechsel, sie bedingt jedoch wegen des Platzbedarfes für die Klemmkörper einen breiten Spannkanal, was einem Verlust an Druckfläche gleichkommt.DE 31 16 506 C2 shows a device for fastening a flexible pressure plate that is a pit with two acute angles to the Includes pit walls running along the cylindrical surface. To the tension serve two clamping bodies divided in the longitudinal direction of the pit, the clamp the plate legs between yourself and a pit wall. Though the plate tension enables an automatic plate change, however, it requires one because of the space required for the sprags wide clamping channel, which equates to a loss of printing area.

Die EP-A 0 330 736 zeigt eine Spanngrube mit einer spitzwinklig und einer senkrecht zur Zylindermantelfläche verlaufenden Grubenwand. Mit den Grubenwänden arbeiten walzenförmige Klemmköper zusammen, die an einem sich federnd im Grund der Zylindergrube abstützenden Spannbalken fest angeordnet sind. EP-A 0 330 736 shows a clamping pit with an acute angle and one perpendicular to the pit wall running along the cylindrical surface. Work with the pit walls roller-shaped clamp body together, which resiliently at the bottom of the Cylinder pit supporting clamping beams are fixed.

Es ist Aufgabe der Erfindung, eine für einen automatischen Plattenwechsel geeignete Plattenspannung zu schaffen, die nur einen engen Spannkanal aufweist.It is an object of the invention, one for an automatic Plate change to create suitable plate tension that only one has narrow clamping channel.

Erfindungsgemäß wird diese Aufgabe bei einer gattungsgemäßen Vorrichtung durch die Anwendung der Merkmale des Kennzeichens des Anspruchs 1 gelöst. Dadurch, daß die Vorrichtung nur einen Klemmkörper aufweist, kann der Spannkanal schmal gehalten werden.According to the invention, this object is achieved with a generic Device through the application of the characteristics of the mark of the Claim 1 solved. Because the device only one Has clamping body, the clamping channel can be kept narrow.

Weitere Merkmale und Vorteile ergeben sich aus den Unteransprüchen in Verbindung mit der Beschreibung.Further features and advantages result from the subclaims in connection with the description.

Die Erfindung soll nachfolgend an einigen Ausführungsbeispielen näher erläutert werden. In den zugehörigen Zeichnungen zeigt:

Fig. 1
eine Plattenspannung im Querschnitt,
Fig. 2
die Seitenansicht eines Formzylinders mit einem weiteren Ausführungsbeispiel einer Plattenspannung,
Fig. 3
den Schnitt III-III nach Fig. 2,
Fig. 4
den Schnitt IV-IV nach Fig. 2,
Fig. 5
den Schnitt V-V nach Fig. 2,
Fig. 6 und 10
weitere Betätigungsvarianten von Spannbalken,
Fig. 7
die Ansicht A nach Fig. 6,
Fig. 8
den Schnitt VIII-VIII nach Fig. 7,
Fig. 9
den Schnitt durch einen Anschlußschuh für stirnseitigen Anschluß einer Druckkammer.
The invention will be explained in more detail below using a few exemplary embodiments. In the accompanying drawings:
Fig. 1
a plate tension in cross section,
Fig. 2
the side view of a forme cylinder with a further embodiment of a plate tension,
Fig. 3
the section III-III of FIG. 2,
Fig. 4
the section IV-IV of FIG. 2,
Fig. 5
the section VV of FIG. 2,
6 and 10
further actuation variants of clamping beams,
Fig. 7
the view A according to FIG. 6,
Fig. 8
the section VIII-VIII of FIG. 7,
Fig. 9
the section through a connecting shoe for the frontal connection of a pressure chamber.

Der in Fig. 1 ausschnittweise dargestellte Formzylinder 1, der in der in Fig. 1 gezeigten Form nicht gegenstand der Ansprüche ist, weist eine in Achsrichtung verlaufende Zylindergrube 2 auf. Diese enthält eine spitzwinklig und eine etwa senkrecht zum Zylindermantel verlaufende Grubenwand 3, 4. Mit den Grubenwänden 3, 4 arbeitet ein Klemmkörper 5 zusammen, der vorteilhaft zu ihnen parallele Klemmflächen 6, 7 besitzt. Der Klemmkörper 5 ist fest an einem Spannbalken 8 angeordnet, der sich mittels Druckfedern 9 im Grund der Zylindergrube 2 abstützt. Der Spannbalken 8 mitsamt dem Klemmkörper 5 erstreckt sich zumindest über die Breite der Druckplatte 11.The forme cylinder 1 shown in detail in FIG. 1, that is not the subject of the claims in the form shown in FIG. 1, has one cylinder pit 2 running in the axial direction. This contains one acute and an approximately perpendicular to the cylinder jacket Pit wall 3, 4. A clamp body works with the pit walls 3, 4 5 together, the clamping surfaces 6, 7 which are advantageously parallel to them owns. The clamping body 5 is fixed to a clamping beam 8 arranged, which is by means of compression springs 9 in the bottom of Cylinder pit 2 supports. Of the Tension bar 8 together with the clamping body 5 extends at least across the width of the printing plate 11.

Die Druckplatte 11 wird mit ihrem vorlaufenden Plattenschenkel 12 an der von der Zylindermantelfläche und der Grubenwand 3 gebildeten Kanalkante eingehängt. Sie wird dabei zwischen der Grubenwand 3 und der Klemmfläche 6 geklemmt. Bei einer nachfolgend stattfindenden Umdrehung des Formzylinders 1 wird die Druckplatte auf diesen aufgerollt, vorteilhaft unter Benutzung einer Andrückrolle oder des angestellten Gummizylinders. Abschließend wird der nachlaufende Plattenschenkel 13 zwischen die Grubenwand 4 und den Klemmkörper 5 eingedrückt. Das Einschieben der Plattenschenkel 12, 13 wird durch Einführschrägen am Klemmkörper 5 erleichtert. Zur Entnahme der Druckplatte 11 wird der Klemmkörper 5 mitsamt dem Spannbalken 8 mittels des Plattenlösers 14 entgegen der Kraft der Federn 9 tiefer in die Zylindergrube 2 gedrückt. Dabei springt unter Aufhebung der Keilwirkung des Klemmkörpers 5 zunächst der nachlaufende Plattenschenkel 13 aus der Spanngrube. Nach dem Abwickeln der Druckplatte 11 vom Zylindermantel kann nach nochmaligem Drücken auf den Klemmkörper 5 auch der vorlaufende Plattenschenkel 12 aus der Plattenspannvorrichtung entnommen werden.The pressure plate 11 with its leading plate leg 12 on that formed by the cylindrical surface and the pit wall 3 Channel edge hooked in. It is between the pit wall 3 and the clamping surface 6 clamped. At a subsequent one Rotation of the forme cylinder 1 is the printing plate on this rolled up, advantageously using a pressure roller or the employed rubber cylinder. Finally, the trailing one Plate leg 13 between the pit wall 4 and the clamping body 5 indented. The plate legs 12, 13 are inserted by Insertion bevels on the clamp body 5 facilitated. To remove the Pressure plate 11, the clamping body 5 together with the clamping beam 8 by means of the plate release 14 against the force of the springs 9 deeper pressed into the cylinder pit 2. It jumps while lifting the Wedge effect of the clamping body 5 is initially the trailing one Plate leg 13 from the clamping pit. After unwinding the Pressure plate 11 from the cylinder jacket can be pressed again the clamping body 5 and the leading plate leg 12 from the Plate clamping device can be removed.

Fig. 2 zeigt einen Formzylinder 16, bei dem ein Spannbalken 17 in der Zylindergrube 18 bis an die Enden des Zylindermantels, bis an die Schmitzringe 19, 20, reicht. Außerdem ist der Klemmkörper aus aneinandergereihten Klemmstücken 21 zusammengesetzt, die federnd im Spannbalken 17 aufgenommen sind. Die Aufteilung in Klemmstücke bringt Fertigungsvorteile. Außerdem wird eine gute Klemmung der Druckplatte 22 an den Grubenwänden erzielt. Die Zylindergrube 18 stimmt übrigens mit der Geometrie der Zylindergrube gemäß Fig. 1 überein. Lediglich die Kanal breite kann bei der Spanngrube 18 unter Umständen schmaler gehalten werden, da aus weiter unten gemachten Erklärungen der in Fig. 1 erforderliche Plattenlöser 14 entfallen kann. Der Spannbalken 17 stützt sich mittels Druckfedern 23 im Grund der Zylindergrube 18 ab (Fig. 3). Jedes Klemmstück 21 wird in einer Nut 24 des Spannbalkens 17 aufgenommen (Fig. 4). Es stützt sich mit Federn 25 im Nutgrund ab. Jedes Klemmstück besitzt nicht näher bezeichnete Klemmflächen analog denen des Klemmkörpers aus Fig. 1. An der Unterseite jedes Klemmstückes 21 sind mittels Schrauben 26 zwei Hülsen 27 angeschraubt (Fig. 5), mit denen die Klemmstücke 21 in Bohrungen 28 des Spannbalkens 17 in Spannrichtung schiebbar geführt werden. Zwischen der Hülse 27 und dem Kopf der Schraube 26 ist eine Anschlagscheibe 29 zwischengelegt, die die Bohrung 28 überdeckt. Die Führung der Klemmstücke 21 könnte auch anderweitig, beispielsweise mittels Stiften oder der Seitenwände der Nut 24 erfolgen. An jeder Maschinenseitenwand 30, 31 ist ein Stößel 32, 33 angeordnet, der durch eine Bohrung 34, 35 des Zylindermantels des Formzylinders 16 in radialer Richtung auf den Spannbalken 17 fahrbar ist. Fig. 2 shows a forme cylinder 16, in which a clamping bar 17 in the cylinder pit 18 to the ends of the cylinder jacket, to the bearer rings 19, 20, is enough. In addition, the sprag is out lined up clamp pieces 21 which are resilient in Tension bars 17 are added. The division into clamping pieces brings Manufacturing advantages. In addition, there is a good clamping of the pressure plate 22 scored on the pit walls. Incidentally, the cylinder pit 18 is correct with the geometry of the cylinder pit according to FIG. 1. Only the channel width may be narrower in the clamping pit 18 are held, since from explanations made below in the Fig. 1 required plate solver 14 can be omitted. The tension beam 17 is supported by compression springs 23 in the bottom of the cylinder pit 18 from (Fig. 3). Each clamping piece 21 is in a groove 24 of the Clamping beam 17 added (Fig. 4). It is supported by springs 25 in the bottom of the groove. Each clamping piece has unspecified Clamping surfaces analogous to those of the clamping body from Fig. 1. At the Bottom of each clamping piece 21 are two by means of screws 26 Screwed sleeves 27 (Fig. 5) with which the clamping pieces 21 in Bores 28 of the clamping beam 17 are slidably guided in the clamping direction will. Between the sleeve 27 and the head of the screw 26 is one Intermediate disc 29, which covers the bore 28. The The clamping pieces 21 could also be guided in some other way, for example by means of pins or the side walls of the groove 24. At every Machine side wall 30, 31, a plunger 32, 33 is arranged, the through a bore 34, 35 of the cylinder jacket of the forme cylinder 16 is movable in the radial direction on the clamping beam 17.

Das Spannen der Druckplatte 22 erfolgt auf gleiche Weise, wie beim vorherigen Ausführungsbeispiel gemäß Fig. 1. Die Plattenschenkel werden von den Klemmstücken 21, die vom federbelasteten Spannbalken in den von den Grubenwänden gebildeten Keil gedrückt werden, gespannt. Zur gesicherten Anlage der Klemmstücke 21 federn diese etwas in den Spannbalken 17 ein, wobei sich dabei zwischen der Anschlagscheibe 29 und der Bohrung 28 ein Spalt bildet. Zwecks Lösen der Druckplatte 22 wird der Formzylinder 16 so positioniert, daß die Bohrungen 34, 35 des Zylindermantels unter den Stößeln 32, 33 zu liegen kommen. Beim Ausfahren der Stößel 32, 33 wird der Spannbalken 17 entgegen der Kraft der Druckfedern 23 in Richtung des Grundes der Spanngrube 18 gedrückt. Nach Überwindung des Spaltes zwischen der Anschlagscheibe 29 und der Bohrung 28 (Fig. 5) werden dabei auch die Klemmstücke 21 mitgenommen, d.h. aus dem von den Grubenwänden gebildeten Keil gezogen, und geben die Plattenschenkel frei. Durch das Nichterfordernis von in den Spannkanal einzuführenden Plattenlösemitteln kann der Spannkanal sehr schmal gehalten werden, beispielsweise 2 mm oder kleiner. Grenzen für seine Minimierung werden praktisch nur noch durch die Druckplattendicke und Belange der Fertigung gesetzt.The clamping of the pressure plate 22 is carried out in the same way as in the previous embodiment according to FIG. 1. The plate legs are from the clamping pieces 21, the spring-loaded clamping beam are pressed into the wedge formed by the pit walls, curious; excited. For the secure contact of the clamping pieces 21, these springs something in the clamping beam 17, whereby between the Stop disk 29 and the bore 28 forms a gap. For loosening the pressure plate 22, the plate cylinder 16 is positioned so that the Bores 34, 35 of the cylinder jacket under the plungers 32, 33 to come to lie. When the plunger 32, 33 is extended, the clamping beam 17 against the force of the compression springs 23 in the direction of the bottom of the Tension pit 18 pressed. After bridging the gap between the Stop disc 29 and the bore 28 (Fig. 5) are also the Clamping pieces 21 taken along, i.e. from that of the pit walls formed wedge pulled, and release the plate legs. By the non-requirement of those to be inserted into the tensioning channel The clamping channel can be kept very narrow, for example 2 mm or smaller. Limits for its minimization are practically only due to the printing plate thickness and concerns of manufacturing.

Die Fig. 6 und 10 zeigen zur Fig. 2 alternative Varianten zur Betätigung von Spannbalken. Gezeigt wird jeweils nur die Betätigungseinrichtung am linken Ende des Formzylindermantels. Eine gleichartige Einrichtung befindet sich am rechten Ende des Mantels. Bei dem Formzylinder gemäß Fig. 6 reicht der Spannbalken 37 bis in den Schmitzring 38 hinein und endet im Bereich einer Druckkammer 39. Letztere weist eine radial auf den Spannbalken 37 hin auslenkbare Membran 40 auf und steht über eine durch den Zylindermantel führende Anschlußbohrung 41 mit der Außenatmosphäre in Verbindung. Auf letztere ist mittels einer Hubvorrichtung 42 der Anschlußschuh 43 einer Druckluftquelle aufsetzbar. Der Anschlußschuh 43 weist die Krümmung des Zylindermantels auf (Fig. 7), und seine Anschlußöffnung 44 hat vorteilhaft die Form eines Langloches (Fig. 8). Dank dieser Langlochform braucht für ein Lösen der Druckplatte die Anschlußbohrung 41 nicht exakt unter dem Anschlußschuh 43 positioniert zu werden. 6 and 10 show alternative variants to FIG. 2 Actuation of clamping bars. Only the is shown Actuator at the left end of the forme cylinder jacket. A similar device is at the right end of the jacket. 6, the clamping bar 37 extends up to the bearer ring 38 and ends in the area of a pressure chamber 39. The latter has a radially deflectable on the clamping beam 37 Membrane 40 and is above a leading through the cylinder jacket Connection bore 41 in connection with the outside atmosphere. On the latter is the connecting shoe 43 by means of a lifting device 42 a compressed air source. The connecting shoe 43 has the Curvature of the cylinder jacket on (Fig. 7), and its connection opening 44 advantageously has the shape of an elongated hole (FIG. 8). thanks to this Elongated hole shape needs the for releasing the pressure plate Connection bore 41 not exactly under the connection shoe 43 to be positioned.

Gemäß Fig. 9 führt die Anschlußbohrung 45 einer Druckkammer stirnseitig aus dem Formzylinder 46 heraus. Hier ist eine Anschlußöffnung 47 des Anschlußschuhs 48 in Form eines Kreissegmentes ausgeführt, und letzteres ist von einer ebenen Dichtfläche umgeben.9 leads the connection bore 45 of a pressure chamber out of the forme cylinder 46. Here is one Connection opening 47 of the connection shoe 48 in the form of a Circular segment executed, and the latter is of a flat Surround the sealing surface.

Zwecks Lösen der Druckplatte wird der Formzylinder 36 mit seiner Anschlußbohrung 41 unter dem Anschlußschuh 43 positioniert. Nach Absenken des Anschlußschuhs 43 auf die Mantelfläche des Formzylinders 36 wird die Druckkammer 39 mit Druckluft gefüllt, worauf die Membran 40 den Spannbalken 37 nach innen drückt. Analog zum vorherigen Beispiel werden dabei die Plattenschenkel freigegeben.To release the printing plate, the forme cylinder 36 with its Connection bore 41 positioned under the connection shoe 43. After Lowering the connecting shoe 43 on the lateral surface of the Forme cylinder 36, the pressure chamber 39 is filled with compressed air, whereupon the membrane 40 presses the tensioning beam 37 inwards. Analogous for the previous example, the plate legs Approved.

Gemäß Fig. 10 weist der Spannbalken 49 des Formzylinders 50 eine schiefe Ebene 51 auf. Ein an der Maschinenseitenwand 52 befestigter Stößel 53 trägt ebenfalls eine schiefe Ebene 54. Beim Ausfahren des Stößels 53 gleiten die schiefen Ebenen 51 und 54 aufeinander ab und bewegen den Spannbalken 49 radial nach innen, wobei die Plattenschenkel freigegeben werden. Das weitere Lösen und auch das Spannen der Druckplatten erfolgt, wie beim ersten Ausführungsbeispiel angegeben.10, the clamping bar 49 of the forme cylinder 50 has a inclined level 51. One attached to the machine side wall 52 Ram 53 also carries an inclined plane 54. When extending of the plunger 53, the inclined planes 51 and 54 slide on each other and move the tensioning beam 49 radially inwards, the Plate legs are released. The further loosening and also that The printing plates are tensioned as in the first Embodiment specified.

In den Ausführungsbeispielen weist der Formzylinder nur eine Zylindergrube zur Spannung einer Druckplatte auf. Ebenfalls zum Schutzumfang des Patentes gehörig können am Umfang des Formzylinders gleichmäßig verteilt mehrere Gruben zur Spannung einer entsprechenden Anzahl Druckplatten angeordnet sein.In the exemplary embodiments, the forme cylinder has only one Cylinder pit for tensioning a pressure plate. Also for Scope of protection of the patent can belong to the circumference of the forme cylinder evenly distributed several pits to tension one corresponding number of printing plates.

Claims (8)

  1. Device for securing a flexible printing plate (22) on the forme cylinder (16) of a printing machine having at least one cylinder groove (18), extending in the axial direction, one edge of which carries the leading plate arm, this edge being formed with a groove wall tapering at an acute angle towards the cylinder casing surface, and with a further groove wall (4) disposed approximately perpendicularly to the cylinder casing and a clamping body (21) co-operating with the groove walls (3, 4) with clamping surfaces (6, 7), this body being arranged on a clamping bar (17, 37, 49) supported resiliently in the bottom of the cylinder groove (18), characterised in that the clamping body (21) is held movably in the clamping bar (17, 37, 49) in the clamping direction, is supported resiliently on it, and can be moved out to a stop, and the clamping bar (17, 37, 49) extends more or less to the ends of the cylinder casing and can be acted on there by means of actuation devices (32, 33, 39, 53) with forces directed radially on to the forme cylinder (16, 36, 50).
  2. Device according to claim 1, characterised in that the clamping body (21) is held in a groove (24) of the clamping bar (17) and is resiliently supported in its base, sleeves (27) are screwed to its lower side with an intermediate stop washer (29), each sleeve (27) being pushed through a bore (28) of the clamping bar (17), the stop washer (29) covering this bore.
  3. Device according to claim 1 or 3, characterised in that the clamping body is composed of clamping pieces (21) arranged adjacently to each other.
  4. Device according to one of claims 1 to 3, characterised in that in the end region of the clamping bar (17) on each machine side wall (30, 31) there is arranged a rod (32, 33) which can be moved in the radial direction through a bore (34, 35) of the cylinder casing of the forme cylinder (16) onto the clamping bar (17).
  5. Device according to one of claims 1 to 3, characterised in that in the end region of the clamping bar (49) on one machine side wall (52) there is arranged a rod (53) which can be moved out in the axial direction of the forme cylinder (50) and carries an inclined plane (54) which co-operates with an inclined plane (51) of the clamping bar (49).
  6. Device according to one of claims 1 to 3, characterised in that in the end region of the clamping bar (37) there is arranged a pressure chamber (39) with a diaphragm (40) which can be deflected radially onto the clamping bar (37), and the pressure chamber (39) has a connecting bore (41, 45) onto which the connecting shoe (43, 48) of a compressed air source can be placed.
  7. Device according to claim 6, characterised in that the connecting bore (41) opens within the casing of the forme cylinder (36), and the connecting shoe (43) has a connecting aperture (44) in the form of a slot which is enclosed by a sealing surface having the curvature of the cylinder casing.
  8. Device according to claim 6, characterised in that the connecting bore (45) opens in the end face of the forme cylinder (46), and the connecting shoe (48) has a connecting aperture (47) in the form of a circular segment which is enclosed by a flat sealing surface.
EP94108563A 1993-06-09 1994-06-03 Device for securing a flexible printing plate Expired - Lifetime EP0628411B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4319167 1993-06-09
DE4319167A DE4319167C2 (en) 1993-06-09 1993-06-09 Device for attaching a flexible pressure plate

Publications (2)

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EP0628411A1 EP0628411A1 (en) 1994-12-14
EP0628411B1 true EP0628411B1 (en) 1998-01-21

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EP94108563A Expired - Lifetime EP0628411B1 (en) 1993-06-09 1994-06-03 Device for securing a flexible printing plate

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US (1) US5485783A (en)
EP (1) EP0628411B1 (en)
JP (1) JP2635514B2 (en)
DE (2) DE4319167C2 (en)

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DE19509561C2 (en) * 1995-03-16 1997-10-23 Koenig & Bauer Albert Ag Device for clamping plates on a cylinder
DE29600845U1 (en) * 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Device for fastening a covering on a printing unit cylinder
DE19606744C2 (en) * 1996-02-23 1998-12-10 Roland Man Druckmasch Device for attaching a flexible pressure plate
US6113346A (en) 1996-07-31 2000-09-05 Agfa Corporation Method for loading and unloading a supply of plates in an automated plate handler
DE19703290A1 (en) * 1997-01-30 1998-08-06 Roland Man Druckmasch Device for fastening a flexible covering on a printing cylinder
US6578484B2 (en) * 2001-06-14 2003-06-17 Masthead International, Inc. Printing plate lock-up assemblies having jaw assembly and registration pin assembly
US6880460B2 (en) 2002-03-15 2005-04-19 Dainippon Screen Mfg. Co., Ltd. Printing plate mounting apparatus
DE10261954B4 (en) 2002-04-25 2006-08-03 Koenig & Bauer Ag Cylinder of a rotary printing machine
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
DE102004034049A1 (en) 2004-07-13 2006-02-09 Man Roland Druckmaschinen Ag Form cylinder of a web-fed rotary printing machine
DE102006012760A1 (en) * 2006-03-17 2007-09-20 Man Roland Druckmaschinen Ag Device for attaching a flexible covering to a printing cylinder
US20080216691A1 (en) * 2007-03-05 2008-09-11 Stephens Ronald F Printing plate lock mechanisms
US8265724B2 (en) * 2007-03-09 2012-09-11 Nellcor Puritan Bennett Llc Cancellation of light shunting
DE102007023272A1 (en) 2007-05-18 2008-11-20 Manroland Ag Clamping device for printing plates and forme cylinders
DE102007054935A1 (en) * 2007-11-17 2009-05-20 Manroland Ag Printing press cylinder
DE102007054936A1 (en) * 2007-11-17 2009-05-20 Manroland Ag Clamping arrangement for printing machine cylinder, particularly for imprinting cylinder, has cartridge shaped housing, flexible clamp is formed at clamping disk, and clamp and respective clamping disk are moved flexibly from each other
DE102008019975A1 (en) * 2008-04-21 2009-10-22 Manroland Ag Clamping device for printing plates and thus equipped forme cylinder

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EP0330736A2 (en) * 1988-02-29 1989-09-06 Rockwell International Corporation Tensionless plate lock-up

Also Published As

Publication number Publication date
US5485783A (en) 1996-01-23
DE4319167C2 (en) 1995-04-27
JP2635514B2 (en) 1997-07-30
JPH079670A (en) 1995-01-13
EP0628411A1 (en) 1994-12-14
DE4319167A1 (en) 1994-12-15
DE59405065D1 (en) 1998-02-26

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