EP0246499A2 - Clamping device for printing plates - Google Patents

Clamping device for printing plates Download PDF

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Publication number
EP0246499A2
EP0246499A2 EP87106592A EP87106592A EP0246499A2 EP 0246499 A2 EP0246499 A2 EP 0246499A2 EP 87106592 A EP87106592 A EP 87106592A EP 87106592 A EP87106592 A EP 87106592A EP 0246499 A2 EP0246499 A2 EP 0246499A2
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EP
European Patent Office
Prior art keywords
clamping
cylinder
pressure
strip
tensioning
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.)
Granted
Application number
EP87106592A
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German (de)
French (fr)
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EP0246499A3 (en
EP0246499B1 (en
Inventor
Joachim Dorow
Gerhard Bleckmann
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BASF SE
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BASF SE
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Priority to AT87106592T priority Critical patent/ATE75666T1/en
Publication of EP0246499A2 publication Critical patent/EP0246499A2/en
Publication of EP0246499A3 publication Critical patent/EP0246499A3/en
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Publication of EP0246499B1 publication Critical patent/EP0246499B1/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
    • B41F27/1218—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
    • B41F27/1231—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 translatory motion substantially tangential to support surface
    • 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
    • B41F27/1293—Devices for filling up the cylinder gap; Devices for removing the filler

Definitions

  • the invention relates to a device for tensioning printing plates (hereinafter referred to as a plate) for web-fed rotary printing presses with at least one clamping bar arranged laterally displaceably in a cylinder recess and engaging under an end region of the plate to be tensioned, the outer contour of which has a curvature corresponding to the cylinder curvature and by a bent one Edge claw of the pressure surface acting on the plate to be clamped is limited, and an insertable, elastic strip is inserted between the pressure surfaces of the clamping strips and a squeezing strip radially adjustable towards the circumference of the cylinder.
  • a device of this type is known from DE-OS 3 401 760.
  • This - known device consists of two clamping bars arranged in a cylinder recess, L-shaped in cross section, which can be moved in opposite directions towards and away from each other.
  • the outer contour of the two clamping strips i.e. the radially outer end face of the standing legs facing each other has a curvature corresponding to the cylinder curvature.
  • the mutually facing, radially outer edges of the two clamping strips are designed as beaked edges with clamping surfaces angled at an acute angle to the circumferential contour, which delimit an outwardly converging clamping channel.
  • the mutually facing, lying legs of the clamping bars engage in a respectively assigned, cylinder-side guide groove, which are delimited on the one hand by the bottom of the recess and on the other hand by insert pieces provided in the region of the side flanks of the cylinder recess, which are gripped under by the lying legs of the clamping bars, which prevents tipping Storage and easy assembly and disassembly of the clamping strips results.
  • the inserts whose outer contour also corresponds to the cylinder contour, are screwed to the cylinder.
  • the plate to be clamped is provided with edge claws angled at an acute angle in the area of its ends, which overlap the clamping surfaces.
  • a strip inserted into the clamping channel is provided, here in the form of a hard rubber or plastic strip, which at the same time acts as a sealing strip which seals the clamping channel radially inwards, so that the clamping channel after clamping the plate with a Filling can be filled in, which is necessary for gravure printing.
  • the tension bars have compared to the one so much movement play that the plate to be tensioned can be attached to the respectively assigned beak edges with its claws bent at an acute angle.
  • each one is assigned a clamping spindle supported on the cylinder side, which engages radially on the back of the standing leg of the clamping bars and has a non-circular cross-section, so that the associated clamping bar is displaced by rotating the clamping spindles is accomplished.
  • the continuous clamping spindles are supported on the cylinder side along their entire length, so that there is no deflection.
  • the circumferential contour of the two clamping bars automatically reaches the same position with each clamping process. This ensures that there is no discontinuity in the cylinder circumference in the clamping position.
  • the clamping spindles are provided in the region of one end with a head which projects beyond the cylinder side and to which a key can be attached, with the aid of which a rotation of the clamping spindles is possible.
  • the corresponding clamping spindle is fixed against unintentional turning, so that an automatic return from the clamping position to the relaxed position is not possible.
  • supported springs can be arranged, for example, on the mutually facing flanks of the two tensioning strips.
  • clamping bar is adjustable in the clamping direction of the pressure plates by means of at least two hydraulic cylinders supported on their rear side and the adjacent cylinder-fixed wall. The same applies to the adjustability of the clamping bar against the clamping direction of the pressure plate.
  • an advantageous embodiment of the invention is that the insertable, elastic bar, as a plastic tube or hose - filled with gap sealing compound - is designed with openings radially in the direction of the pressure plate.
  • the drawing shows a radial section through the device according to the invention with 2 clamping bars.
  • the device shown in the drawing corresponds in its structure and in your. Operation essentially of the device as described in DE-OS 34 01 760 and at the beginning of this document.
  • the mutually facing, radially outer edges of the two clamping strips are designed as beaked edges with clamping surfaces 3 which are angled at an acute angle to the circumferential contour and which delimit an outwardly converging clamping channel 4.
  • a plastic tube 7, a deformable tube or the like - filled with gap sealing compound - is arranged, which over its entire length - corresponds to the cylinder length - is provided with openings in the direction of the plate to be tensioned.
  • at least 2 commercially available hydraulic cylinders 8 are incorporated into the insert pieces, once for pressing the clamping bars against one another and once for pressing the clamping bars apart. These hydraulic cylinders are supported on the back of the insert pieces on the wall fixed to the cylinder.
  • the plate 9 to be clamped is provided in the region of its ends with edge claws 10 which are angled at an acute angle and overlap the clamping surfaces.
  • the plastic tube 7, which is arranged in the clamping channel 4 and is filled with gap sealing compound is deformed on the one hand by the clamping strips 2 and, on the other hand, by the squeezing strip 6 in such a way that the gap sealing compound passes through the openings of the plastic tube against the outer contour of the cylinder is pressed.
  • Above the outer contour in the gap area is a shaped piece 12, which forms the upper limit for the gap closure.
  • the squeeze bar also fulfills a second function, namely when the plate is changed - that is, when a new plate is clamped onto the cylinder - pushes the deformed plastic hose 7 out of the cylinder.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Screen Printers (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Abstract

Vorrichtung zum Spannen von Druckplatten (9) für Rollenrotationsdruckmaschinen mit mindestens einer in einer Zylinderausnehmung 1 seitlich verschiebbar angeordneten, einen Endbereich der zu spannenden Druckplatte untergreifenden Spannleiste (2), deren Außenkontur eine der Zylinderkrümmung entsprechende Krümmung aufweist und durch eine an einer umgebogenen Randklaue der zu spannenden Druckplatte angreifende Druckfläche (3) begrenzt ist, und wobei zwischen den Druckflächen der Spannleisten und einer radial gegen den Umfang des Zylinders hin verstellbaren Quetschleiste (6) eine einlegbare, elastische Leiste eingelegt ist, wobei die Spannleiste mittels mindestens zweier an ihrer Rückseite und der benachbarten zylinderfesten Wandung sich abstützenden Hydraulikzylindern (8) in Spannrichtung der druckplatten verstellbar ist.Device for tensioning printing plates (9) for web-fed rotary printing presses with at least one clamping bar (2) arranged laterally displaceably in a cylinder recess 1, an end region of the tensioning plate (2) engaging under the pressure plate to be tensioned, the outer contour of which has a curvature corresponding to the cylinder curvature and which is due to a bent-over edge claw exciting pressure plate attacking pressure surface (3) is limited, and between the pressure surfaces of the clamping strips and a radially adjustable against the circumference of the cylinder squeeze strip (6) an insertable, elastic strip is inserted, the clamping strip by means of at least two on its back and the Hydraulic cylinders (8) supporting adjacent cylinder-fixed wall can be adjusted in the clamping direction of the pressure plates.

Description

Die Erfindung betrifft eine Vorrichtung zum Spannen von Druckplatten (im weiteren Platte genannt) für Rollenrotationsdruckmaschinen mit mindestens einer in eine Zylinderausnehmung seitlich verschiebbar angeordneten, einen Endbereich der zu spannenden Platte untergreifenden Spannleiste, deren Außenkontur eine der Zylinderkrümmung entsprechende Krüummung aufweist und durch eine an einer umgebogenen Randklaue der zu spannenden Platte angreifende Druckfläche begrenzt ist, und wobei zwischen den Druckflächen der Spannleisten und einer radial gegen den Umfang des Zylinders hin verstellbaren Quetschleiste eine einlegbare, elastische Leiste eingelegt ist.The invention relates to a device for tensioning printing plates (hereinafter referred to as a plate) for web-fed rotary printing presses with at least one clamping bar arranged laterally displaceably in a cylinder recess and engaging under an end region of the plate to be tensioned, the outer contour of which has a curvature corresponding to the cylinder curvature and by a bent one Edge claw of the pressure surface acting on the plate to be clamped is limited, and an insertable, elastic strip is inserted between the pressure surfaces of the clamping strips and a squeezing strip radially adjustable towards the circumference of the cylinder.

Eine Vorrichtung dieser Art ist aus der DE-OS 3 401 760 bekannt. Diese - bekannte Vorrichtung besteht aus zwei in einer Zylinderausnehmung angeordneten, im Querschnitt L-förmigen Spannleisten, die gegenläufig aufeinander zu bzw. voneinander weg bewegbar sind. Die Außenkontur der beiden Spannleisten, d.h. die radial äußere Stirnseite der einander zugewendeten, stehenden Schenkel, besitzt eine der Zylinderkrümmung entsprechende Krümmung. Die einander zugewandten, radial äußeren Kanten der beiden Spannleisten sind als Schnabelkanten mit gegenüber der Umfangskontur spitzwinklig abgewinkelten Spannflächen ausgebildet, die einen nach außen konvergierenden Spannkanal begrenzen. Die voneinander abgewandten, liegenden Schenkel der Spannleisten greifen in eine jeweils zugeordnete, zylinderseitige Führungsnut ein, die einerseits durch den Boden der Ausnehmung und andererseits durch im Bereich der Seitenflanken der Zylinderausnehmung vorgesehene, von den liegenden Schenkeln der Spannleisten untergriffene Einsatzstücke begrenzt sind, was eine kippsichere Lagerung sowie eine einfache Montage und Demontage der Spannleisten ergibt. Die Einsatzstücke, deren Außenkontur ebenfalls der Zylinderkontur entspricht, sind mit dem Zylinder verschraubt.A device of this type is known from DE-OS 3 401 760. This - known device consists of two clamping bars arranged in a cylinder recess, L-shaped in cross section, which can be moved in opposite directions towards and away from each other. The outer contour of the two clamping strips, i.e. the radially outer end face of the standing legs facing each other has a curvature corresponding to the cylinder curvature. The mutually facing, radially outer edges of the two clamping strips are designed as beaked edges with clamping surfaces angled at an acute angle to the circumferential contour, which delimit an outwardly converging clamping channel. The mutually facing, lying legs of the clamping bars engage in a respectively assigned, cylinder-side guide groove, which are delimited on the one hand by the bottom of the recess and on the other hand by insert pieces provided in the region of the side flanks of the cylinder recess, which are gripped under by the lying legs of the clamping bars, which prevents tipping Storage and easy assembly and disassembly of the clamping strips results. The inserts, whose outer contour also corresponds to the cylinder contour, are screwed to the cylinder.

Die aufzuspannende Platte ist im Bereich ihrer Enden mit spitzwinklig abgewinkelten Randklauen versehen, die die Spannflächen übergreifen. Zum Anpressen der Randklauen an die jeweils zugeordnete Spannfläche ist eine in den Spannkanal eingelegte Leiste vorgesehen, hier in Form einer Hartgummi- oder Kunststoffleiste, die gleichzeitig als den Spannkanal nach radial innen abdichtende Dichtleiste wirkt, so daß der Spannkanal nach dem Spannen der Platte mit einer Füllung ausgefüllt werden kann, was beim Tiefdruck erforderlich ist. Die Spannleisten besitzen gegenüber den Einsatzstücken soviel Bewegungsspiel, daß die zu spannende Platte mit ihren spitzwinklig abgebogenen Randklauen an den jeweils zugeordneten Schnabelkanten eingehängt werden kann. Um dennoch einen durchgehenden Schlitz zwischen der Rückseite der Spannleisten und der jeweils benachbarten zylinderfesten Wandung zu vermeiden, ist eine gegenseitige Verzinkung vorgesehen. Zum Verschieben der Spannleisten in Spannrichtung ist diesen jeweils eine zylinderseitig abgestützte, radial an der Rückseite des stehenden Schenkel der Spannleisten angreifende, über die ganze Zylinderbreite durchgehende Spannspindel zugeordnet, die einen unrunden Querschnitt aufweist, so daß durch Verdrehen der Spannspindeln eine Verschiebung der jeweils zugeordneten Spannleiste bewerkstelligt wird. Die durchgehenden Spannspindeln sind auf ihrer ganzen Länge zylinderseitig abgestützt, so daß eine Durchbiegung unterbleibt. Die Umfangskontur der beiden Spannleisten erreicht dadurch bei jedem Spannvorgang automatisch dieselbe Stellung. Hierdurch ist sichergestellt, daß sich in der Spann- - stellung keine Unstetigkeit des Zylinderumfangs ergibt. Die Spannspindeln sind im Bereich eines Endes mit einem die Zylinderseite überragenden Kopf versehen, an dem ein Schlüssel angesetzt werden kann, mit Hilfe dessen eine Verdrehung der Spannspindeln möglich ist. Mittels einer speziellen Anordnung wird die entsprechende Spann-spindel gegen unbeabsichtiges Verdrehen fixiert, so daß eine selbsttätige Rückstellung aus der Spannstellung in die Entspannstellung nicht möglich ist. Zum Rückstellen der Spannleisten in die Ausgangsstellung können beispielsweise an den einander zugewandten Flanken der beiden Spannleisten abgestützte Federn angeordnet werden.The plate to be clamped is provided with edge claws angled at an acute angle in the area of its ends, which overlap the clamping surfaces. To press the edge claws onto the respectively assigned clamping surface, a strip inserted into the clamping channel is provided, here in the form of a hard rubber or plastic strip, which at the same time acts as a sealing strip which seals the clamping channel radially inwards, so that the clamping channel after clamping the plate with a Filling can be filled in, which is necessary for gravure printing. The tension bars have compared to the one so much movement play that the plate to be tensioned can be attached to the respectively assigned beak edges with its claws bent at an acute angle. In order to avoid a continuous slot between the back of the tensioning strips and the respectively adjacent wall fixed to the cylinder, a mutual galvanizing is provided. To move the clamping bars in the clamping direction, each one is assigned a clamping spindle supported on the cylinder side, which engages radially on the back of the standing leg of the clamping bars and has a non-circular cross-section, so that the associated clamping bar is displaced by rotating the clamping spindles is accomplished. The continuous clamping spindles are supported on the cylinder side along their entire length, so that there is no deflection. The circumferential contour of the two clamping bars automatically reaches the same position with each clamping process. This ensures that there is no discontinuity in the cylinder circumference in the clamping position. The clamping spindles are provided in the region of one end with a head which projects beyond the cylinder side and to which a key can be attached, with the aid of which a rotation of the clamping spindles is possible. By means of a special arrangement, the corresponding clamping spindle is fixed against unintentional turning, so that an automatic return from the clamping position to the relaxed position is not possible. For resetting the tensioning strips into the starting position, supported springs can be arranged, for example, on the mutually facing flanks of the two tensioning strips.

Bei der Anwendung dieser beschriebenen Vorrichtung zum Spannen von Platten ergaben sich in der Praxis besonders drei gravierende Nachteile; erstens das manuelle Spannen der Spannleisten mittels eines Schlüssels, zweitens das Verschließen des Spannkanals - nach dem Spannen der Spannleisten - mit einer Spaltverschlußmasse und drittens, daß Spannleiste und Einsatzstück verzinkt sind, was einem aufwendigen Fertigungsaufwand entspricht.In practice, when using the device for tensioning plates described, there were three major disadvantages; first, the manual tensioning of the tensioning strips by means of a key, secondly the closing of the tensioning channel - after the tensioning of the tensioning strips - with a gap sealing compound and thirdly, that the tensioning strip and insert are galvanized, which corresponds to a complex manufacturing effort.

Hiervon ausgehend ist es daher die Aufgabe der vorliegenden Erfindung obige Nachteile zu vermeiden.Proceeding from this, it is therefore the object of the present invention to avoid the above disadvantages.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Spannleiste mittels mindestens zweier an ihrer Rückseite und der benachbarten zylinderfesten Wandung sich abstützenden Hydraulikzylindern in Spannrichtung der Druckplatten verstellbar ist. Dasselbe gilt für die Verstellbarkeit der Spannleiste entgegen der Spannrichtung der Druckplatte.This object is achieved in that the clamping bar is adjustable in the clamping direction of the pressure plates by means of at least two hydraulic cylinders supported on their rear side and the adjacent cylinder-fixed wall. The same applies to the adjustability of the clamping bar against the clamping direction of the pressure plate.

Eine vorteilhafte Ausgestaltung der Erfindung liegt darin, daß die einlegbare, elastische Leiste,als Kunststoffrohr oder Schlauch - gefüllt mit Spaltverschlußmasse - mit öffnungen radial in Richtung der Druckplatte ausgebildet ist.An advantageous embodiment of the invention is that the insertable, elastic bar, as a plastic tube or hose - filled with gap sealing compound - is designed with openings radially in the direction of the pressure plate.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Die Zeichnung zeigt einen radialen Schnitt durch die erfindungsgemäße Vorrichtung mit 2 Spannleisten.An embodiment of the invention is shown in the drawing and will be described in more detail below. The drawing shows a radial section through the device according to the invention with 2 clamping bars.

Die in der Zeichnung dargestellte Vorrichtung entspricht in Ihrem Aufbau und in Ihrer. Wirkungsweise im wesentlichen der Vorrichtung wie sie in der DE-OS 34 01 760 und eingangs dieser Schrift beschrieben ist.The device shown in the drawing corresponds in its structure and in your. Operation essentially of the device as described in DE-OS 34 01 760 and at the beginning of this document.

Sie besteht im wesentlichen aus den zwei in einer Zylinderausnehmung 1 - angeordneten, bezüglich einer Radialebene symmetrisch ausgebildeten, im Querschnitt L-f örmigen Spannleisten 2, bei denen die radial äußere Stirnseite der einander zugewandten, stehenden Schenkel eine der Zylinderkrümmung entsprechende Krümmung aufweist. Die einander zugewandten, radial äußeren Kanten der beiden Spannleisten sind als Schnabelkanten mit gegenüber der Umfangskontur spitzwinklig abgewinkelten Spannflächen 3 ausgebildet, die einen nach außen konvergierenden Spannkanal 4 begrenzen. Die voneinander abgewandten, liegenden Schenkel der Spannleisten greifen in eine jeweils zugeordnete, zylinderseitige Führungsnut ein, die einerseits durch einen Bereich der Seitenflanken der Zylinderausnehmung vorgesehene, von den liegenden Schenkeln der Spannleisten untergriffene Einsatzstücke 5 begrenzt sind. Diese Einsatzstücke deren Außenkonturen ebenfalls der Zylinderkontur entsprechen, sind mit dem Zylinder verschraubt. Zwischen den Spannflächen 3 der Spannleisten 2, den Spannleisten und einer radial gegen den Umfang des Zylinders zwischen den Spannleisten verschiebbaren Quetschleiste 6 ist ein Kunststoffschlauch 7 ein deformierbares Rohr oder ähnliches - gefüllt mit Spaltverschlußmasse - angeordnet, das auf seiner gesamten Länge - entspricht der Zylinderlänge - mit öffnungen in Richtung der zu spannenden Platte versehen ist. In die Einsatzstücke sind jeweils mindestens 2 handelsübliche Hydraulikzylinder 8 einmal zum gegeneinander Pressen der Spannleisten und einmal zum auseinander Pressen der Spannleisten eingearbeitet. Diese Hydraulikzylinder stützen sich an ihrer Rückseite über die Einsatzstücke an der zylinderfesten Wandung ab.It essentially consists of the two clamping bars 2, which are arranged in a cylinder recess 1 and are symmetrical with respect to a radial plane and have an L-shaped cross section, in which the radially outer end face of the mutually facing standing legs has a curvature corresponding to the cylinder curvature. The mutually facing, radially outer edges of the two clamping strips are designed as beaked edges with clamping surfaces 3 which are angled at an acute angle to the circumferential contour and which delimit an outwardly converging clamping channel 4. The mutually facing, lying legs of the tensioning bars engage in a respectively assigned, cylinder-side guide groove, which are delimited on the one hand by an area of the side flanks of the cylinder recess, which are provided under the lying legs of the tensioning bars, which are undercut 5. These inserts, whose outer contours also correspond to the cylinder contour, are screwed to the cylinder. Between the clamping surfaces 3 of the clamping strips 2, the clamping strips and a squeezing strip 6 which can be displaced radially against the circumference of the cylinder between the clamping strips, a plastic tube 7, a deformable tube or the like - filled with gap sealing compound - is arranged, which over its entire length - corresponds to the cylinder length - is provided with openings in the direction of the plate to be tensioned. In each case at least 2 commercially available hydraulic cylinders 8 are incorporated into the insert pieces, once for pressing the clamping bars against one another and once for pressing the clamping bars apart. These hydraulic cylinders are supported on the back of the insert pieces on the wall fixed to the cylinder.

Die aufzuspannende Platte 9 ist im Bereich ihrer Enden mit spitzwinklig abgewinkelten Randklauen 10 versehen, die die Spannflächen übergreifen. Beim Anpressen der Randklauen an die jeweils zugeordnete Spannfläche 3 wird der im Spannkanal 4 angeordnete Kunststoffschlauch 7 der mit Spaltverschlußmasse gefüllt ist, einerseits durch die Spannleisten 2 und andererseits durch die Quetschleiste 6 derart verformt, daß die Spaltverschlußmasse durch die öffnungen des Kunststoffrohrs hindurch gegen die Außenkontur des Zylinders gepreßt wird. Oberhalb der Außenkontur im Spaltbereich befindet sich ein Formstück 12, das die obere Begrenzung für den Spaltverschluß bildet. Die Quetschleiste erfüllt gleichzeitig noch eine 2. Funktion, und zwar stößt dieselbe beim Plattenwechsel - also dann wenn eine neue Platte auf den Zylinder aufgespannt wird - den deformierten Kunststoffschlauch 7 aus dem Zylinder hinaus.The plate 9 to be clamped is provided in the region of its ends with edge claws 10 which are angled at an acute angle and overlap the clamping surfaces. When the edge claws are pressed onto the respectively assigned clamping surface 3, the plastic tube 7, which is arranged in the clamping channel 4 and is filled with gap sealing compound, is deformed on the one hand by the clamping strips 2 and, on the other hand, by the squeezing strip 6 in such a way that the gap sealing compound passes through the openings of the plastic tube against the outer contour of the cylinder is pressed. Above the outer contour in the gap area is a shaped piece 12, which forms the upper limit for the gap closure. The squeeze bar also fulfills a second function, namely when the plate is changed - that is, when a new plate is clamped onto the cylinder - pushes the deformed plastic hose 7 out of the cylinder.

Claims (4)

1, Vorrichtung zum Spannen von Druckplatten 9 für Rollenrotationsdruckmaschinen mit mindestens einer in einer Zylinderausnehmung 1 seitlich verschiebbar angeordneten, einen Endbereich der zu spannenden Druckplatte untergreifenden Spannleiste 2, deren Außenkontur eine der Zylinderkrümmung entsprechende Krümmung aufweist und durch eine an einer umgebogenen Randklaue der zu spannenden Druckplatte angreifende Druckfläche 3 begrenzt ist, und wobei zwischen den Druckflächen der Spannleisten und einer radial gegen den Umfang des Zylinders hin verstellbaren Quetschleiste 6 eine einlegbare, elastische Leiste eingelegt ist, dadurch gekennzeichnet, daß die Spannleiste mittels mindestens zweier an ihrer Rückseite und der benachbarten zylinderfesten Wandung sich abstützenden Hydraulikzylindern 8 in Spannrichtung der Druckplatten verstellbar ist.1, device for tensioning printing plates 9 for web-fed rotary printing presses with at least one clamping bar 2 arranged laterally displaceably in a cylinder recess 1, an end region of the tensioning plate 2 engaging under the pressure plate to be tensioned, the outer contour of which has a curvature corresponding to the cylinder curvature and due to a bent-over edge claw of the pressure plate to be tensioned attacking pressure surface 3 is limited, and between the pressure surfaces of the clamping strips and a radially adjustable against the circumference of the cylinder squeeze strip 6, an insertable, elastic strip is inserted, characterized in that the clamping strip by means of at least two on its back and the adjacent cylinder-fixed wall supporting hydraulic cylinders 8 is adjustable in the clamping direction of the pressure plates. 2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Spannleiste mittels mindestens zweier an ihrer Rückseite und der benachbarten zylinderfesten Wandung sich abstützenden Hydraulikzylindern 8 entgegen der Spannrichtung der Druckplatten gegen einen Anschlag 11 verstellbar ist.2. Device according to claim 1, characterized in that the clamping bar is adjustable against a stop 11 by means of at least two hydraulic cylinders 8 which are supported on their rear side and the adjacent cylinder-fixed wall, counter to the clamping direction of the pressure plates. 3. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die einlegbare, elastische Leiste als Kunststoffrohr 7 oder Schlauch 7 - gefüllt mit Spaltverschlußmasse - mit öffnungen radial in Richtung der Druckplatte ausgebildet ist.3. Device according to claim 1, characterized in that the insertable, elastic bar as a plastic tube 7 or hose 7 - filled with gap sealing compound - is formed with openings radially in the direction of the pressure plate. 4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Quetschleiste 6 als Anpreßelement für das Kunststoffrohr 7 oder den Schlauch 7 ausgebildet ist.4. The device according to claim 1, characterized in that the pinch strip 6 is designed as a pressing element for the plastic tube 7 or the hose 7.
EP87106592A 1986-05-15 1987-05-07 Clamping device for printing plates Expired - Lifetime EP0246499B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87106592T ATE75666T1 (en) 1986-05-15 1987-05-07 DEVICE FOR CLAMPING PRESSURE PLATES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3616425 1986-05-15
DE19863616425 DE3616425A1 (en) 1986-05-15 1986-05-15 DEVICE FOR TENSIONING PRINTING PLATES

Publications (3)

Publication Number Publication Date
EP0246499A2 true EP0246499A2 (en) 1987-11-25
EP0246499A3 EP0246499A3 (en) 1989-10-11
EP0246499B1 EP0246499B1 (en) 1992-05-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106592A Expired - Lifetime EP0246499B1 (en) 1986-05-15 1987-05-07 Clamping device for printing plates

Country Status (6)

Country Link
US (1) US4809607A (en)
EP (1) EP0246499B1 (en)
JP (1) JPS62271743A (en)
AT (1) ATE75666T1 (en)
DE (2) DE3616425A1 (en)
ES (1) ES2030675T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100408C1 (en) * 1991-01-09 1992-05-14 Man Miller Druckmaschinen Gmbh, 6222 Geisenheim, De
DE4404758C2 (en) * 1994-02-15 1996-06-27 Roland Man Druckmasch Method and device for changing the covering of a cylinder of a web-fed rotary printing press
US5701823A (en) * 1997-01-27 1997-12-30 Morris; Jerry L. Self aligning tool for registering rotary printing plates and method of registering plates
DE19956833B4 (en) * 1999-11-12 2009-04-23 Dr. Johannes Heidenhain Gmbh angle measurement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381624A1 (en) * 1977-02-28 1978-09-22 Daetwyler & Co M CLICH HOLDER CYLINDER FOR ROTATING HELIOGRAPHERS, PROVIDED WITH FLEXIBLE PLATES
EP0118866A2 (en) * 1983-03-12 1984-09-19 BASF Aktiengesellschaft Method and arrangement for filling the gap between the ends of an intaglio printing platen clamped onto a forme cylinder
EP0132864A1 (en) * 1983-07-26 1985-02-13 De La Rue Giori S.A. Device for adjusting a forme plate on a forme cylinder
EP0142874A1 (en) * 1983-11-14 1985-05-29 De La Rue Giori S.A. Plate cylinder with a device for affixing gravure printing plates for a web-printing machine
DE3401760A1 (en) * 1984-01-19 1985-08-01 Albert-Frankenthal Ag, 6710 Frankenthal Device for clamping printing plates
US4577560A (en) * 1984-08-20 1986-03-25 R. R. Donnelley & Sons Company Gapless lock-up for offset printing cylinders

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011437A (en) * 1959-01-31 1961-12-05 Aller Press As Mechanism for clamping flexible printing plates to the plate cylinder of machines for flat printing
US3058417A (en) * 1959-05-22 1962-10-16 Nils H V Norlin Mechanism for clamping plates to the cylinders of printing machines
DE1125948B (en) * 1959-09-05 1962-03-22 Maschf Augsburg Nuernberg Ag Device for clamping flexible printing plates

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381624A1 (en) * 1977-02-28 1978-09-22 Daetwyler & Co M CLICH HOLDER CYLINDER FOR ROTATING HELIOGRAPHERS, PROVIDED WITH FLEXIBLE PLATES
EP0118866A2 (en) * 1983-03-12 1984-09-19 BASF Aktiengesellschaft Method and arrangement for filling the gap between the ends of an intaglio printing platen clamped onto a forme cylinder
EP0132864A1 (en) * 1983-07-26 1985-02-13 De La Rue Giori S.A. Device for adjusting a forme plate on a forme cylinder
EP0142874A1 (en) * 1983-11-14 1985-05-29 De La Rue Giori S.A. Plate cylinder with a device for affixing gravure printing plates for a web-printing machine
DE3401760A1 (en) * 1984-01-19 1985-08-01 Albert-Frankenthal Ag, 6710 Frankenthal Device for clamping printing plates
US4577560A (en) * 1984-08-20 1986-03-25 R. R. Donnelley & Sons Company Gapless lock-up for offset printing cylinders

Also Published As

Publication number Publication date
JPS62271743A (en) 1987-11-26
DE3616425A1 (en) 1987-11-19
US4809607A (en) 1989-03-07
EP0246499A3 (en) 1989-10-11
ATE75666T1 (en) 1992-05-15
EP0246499B1 (en) 1992-05-06
DE3778753D1 (en) 1992-06-11
ES2030675T3 (en) 1992-11-16

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