EP1767361A2 - Bending machine with movable pressure strip - Google Patents

Bending machine with movable pressure strip Download PDF

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Publication number
EP1767361A2
EP1767361A2 EP06019213A EP06019213A EP1767361A2 EP 1767361 A2 EP1767361 A2 EP 1767361A2 EP 06019213 A EP06019213 A EP 06019213A EP 06019213 A EP06019213 A EP 06019213A EP 1767361 A2 EP1767361 A2 EP 1767361A2
Authority
EP
European Patent Office
Prior art keywords
hold
bending
down plate
plate
pressure strip
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
EP06019213A
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German (de)
French (fr)
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EP1767361A3 (en
EP1767361B1 (en
Inventor
Michael Scholz
Thomas Dr. Kling
Georg Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
Manroland AG
MAN Roland Druckmaschinen AG
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Publication date
Application filed by Manroland AG, MAN Roland Druckmaschinen AG filed Critical Manroland AG
Publication of EP1767361A2 publication Critical patent/EP1767361A2/en
Publication of EP1767361A3 publication Critical patent/EP1767361A3/en
Application granted granted Critical
Publication of EP1767361B1 publication Critical patent/EP1767361B1/en
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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
    • B41F27/1287—Devices for attaching printing elements or formes to supports for attaching flexible printing formes devices for bending the printing plates or the printing plate ends

Definitions

  • the present invention relates to a bending machine for bending sheet metal and in particular for bending printing plates for use in printing presses.
  • Bending machines for bending sheet metal but also special machines for bending printing plates, which are particularly used in offset printing, are well known from the prior art.
  • the publication DE 33 40 144 C2 can be taken that particularly high demands on the accuracy apply to the bending of the sheet edges of printing plates. Because the bending edges of the printing plates must be inserted into the clamping channel on the lateral surface of the plate cylinder of the printing press and can be positioned there as precisely as possible.
  • Figure 1 shows schematically a partial cross section of the structure of a conventional bending machine.
  • Reference numeral 1 is a bending table equipped with a bending cheek. This is to be bent pressure plate 2, which is pressed by a hold-down plate 3 in the region of the pressure bar 4 on the bending table.
  • the pressure plate 2 is firmly clamped, the end of the pressure plate 2 is bent by means of the bending beam 6 to an edge.
  • This bending process has to be as accurate as possible for the entire printing plate, because the bending edges on both longitudinal sides of the printing plate, ie the edges on the leading and trailing side of the printing plate, not exactly executed, it comes at high printing speeds to a reduced print quality.
  • the object of the present invention is to provide a bending machine with which it is possible to produce bending edges, in particular on a printing plate with high accuracy.
  • a bending machine for bending a printing press plate wherein the bending machine comprises a bending table on which the sheet to be processed or the printing press plate for the bending operation is deposited.
  • the pressure plate By means of a pressure bar, which is attached to a hold-down plate, the pressure plate is fixed on the bending table.
  • the fixing takes place in the immediate vicinity of the bending edge to be produced, before a bending beam, the sheet is bent over a bending cheek with the appropriate angle provided for the sheet.
  • the hold-down plate is moved up via a corresponding mechanism to directly to the plate, so that a defined distance between the pressure bar and the sheet to be bent arises.
  • the attached to the hold-down plate pressure bar can perform a relative movement relative to the hold-down plate. Due to this relative movement, it is possible to perform a finely adjusted fixing of the sheet on the bending table. This finely adjusted fixing takes place via the pressure strip surface more uniformly than was possible in the prior art, so that the sheet is held along the bending edge to be produced with a uniform distributed force. Thus, a more accurate bending of the sheet is possible.
  • a linear drive is provided for carrying out the relative movement of the pressure bar relative to the hold-down plate.
  • the linear drive can advantageously initiate the clamping force necessary for fixing the pressure plate as uniformly as possible over the entire length of the pressure bar. Because for the idea of the invention it is essential that on the entire length of the edge to be bent as much as possible clamping force acts. Different clamping forces along the bending edge to be produced would also lead to differently pronounced edge portions.
  • an extensible hose is used as the linear drive, which preferably consists of silicone, which is filled to initiate the clamping force with a fluid.
  • a fluid for example, compressed air can be used.
  • the tube is arranged between the hold-down plate and the pressure bar and is supported on the hold-down plate in order to transmit the clamping force, which results from the expansion of the tube, to the sheet to be bent.
  • the hose between the hold-down plate and the pressure bar runs in the longitudinal direction of the pressure bar, i. in the direction and along the edge to be bent.
  • a pressure bar is constructed in two parts and consists of a spring element and a plastic strip.
  • the two-part construction allows the mounting of the pressure bar on the hold-down plate, without the pressure bar itself having to be subjected to bending.
  • the spring element is a sheet of spring steel, which is attached to a longitudinal side corresponding to the length of the edge to be bent, for example by means of screws to the hold-down plate, and to the other longitudinal side has the plastic strip, which is then pressed over the expanding hose against the sheet to be bent or the pressure plate.
  • the hose is provided in a groove of the hold-down plate, so that a defined linear movement in the direction of the sheet to be bent is possible.
  • the groove is preferably designed so deep that the hose is completely housed in the idle state in the hold-down plate, and the pressure bar engages positively against the hold-down plate.
  • this structure is not mandatory, is also conceivable a construction in which the hose is housed in the pressure bar, so that a further processing of the hold-down plate is no longer necessary.
  • a spacer which e.g. can be realized by means of a stop screw, which allows a variable adjustment of the distance between hold-down plate and bending sheet metal or bending table.
  • Figure 2 shows a pressure plate 2 which is arranged on a bending table 1 so that the bending edge to be produced is arranged above the bending cheek 5 of the bending table.
  • the hold-down plate 3 is held by means of the stopper screw 8 at a defined distance from the pressure plate 2.
  • Figure 2 shows the embodiment of the invention in an unactivated state, i. the pressure bar 4 is still on the hold-down plate 3 and does not yet clamp the pressure plate 2 on the bending table 1.
  • the pressure bar 4 consists of a sheet metal rail 9, which is fastened by means of screws 10 to the hold-down plate 3.
  • the sheet metal rail 9 is made of spring steel, so that the plastic strip 11, which is connected to the sheet metal rail 9, e.g. is attached by gluing, is pushed over the tube 7 in the groove 12 down when the tube 7 is supplied with compressed air.
  • Figure 3 shows the embodiment of the invention in the activated state, ie now there is compressed air in the tube 7, so that the pressure bar 4, consisting of sheet metal rail 9 and plastic strip 11 is pressed onto the bending table and so clamps the pressure plate. Since the tube 7 extends along the entire length of the pressure bar 4 or the sheet metal rail 9, there is a uniform loading of the pressure plate with a force resulting from the expansion of the tube 7. If the pressure plate 2 clamped, the actual bending process can be initiated by means of the bending beam 6. Due to the uniform holding force on the side of the pressure bar and the uniform bending force which is introduced by the bending beam 6, creates a precise bending edge.

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Abstract

The pressure strip (4) used in bending the printing plates, is able to execute relative movement with at least one degree of freedom, relative to the hold-down plate (3). The pressure strip is moved by a linear drive (7). This exerts the required, uniformly-distributed clamping force over the whole length of the pressure strip, to fix the printing plate (2) onto the bending table (1). The linear drive moving the pressure strip at right angles to the hold-down plate, is a fluid-filled, radially-expansible tube (7) : The tube intervenes between the hold-down plate and the pressure strip. The fluid is compressed air, the tube a silicon rubber tube. The pressure strip comprises a spring and plastic strip. The spring is fastened at one long side to the hold-down plate and the tube is located between a second long side and the hold down plate. The tube is housed in a groove in the hold-down plate, such that when expanded, its drive direction is defined. A spacer-holder (8) is provided on the hold-down plate, to assure defined clearance between it and the bending table.

Description

Die vorliegende Erfindung betrifft eine Biegemaschine zum Biegen von Blechen und insbesondere zum Biegen von Druckplatten für den Einsatz in Druckmaschinen.The present invention relates to a bending machine for bending sheet metal and in particular for bending printing plates for use in printing presses.

Biegemaschinen zum Biegen von Blechen, aber auch Sondermaschinen zum Biegen von Druckplatten, die insbesondere im Offsetdruck Anwendung finden, sind aus dem Stand der Technik hinreichend bekannt. So kann z.B. der Druckschrift DE 33 40 144 C2 entnommen werden, dass für das Biegen der Blechkanten von Druckplatten besonders hohe Anforderungen an die Genauigkeit gelten. Denn die Biegekanten der Druckplatten müssen in den Spannkanal auf der Mantelfläche des Plattenzylinders der Druckmaschine eingelegt und dort möglichst präzise positioniert werden können.Bending machines for bending sheet metal, but also special machines for bending printing plates, which are particularly used in offset printing, are well known from the prior art. For example, the publication DE 33 40 144 C2 can be taken that particularly high demands on the accuracy apply to the bending of the sheet edges of printing plates. Because the bending edges of the printing plates must be inserted into the clamping channel on the lateral surface of the plate cylinder of the printing press and can be positioned there as precisely as possible.

Figur 1 zeigt schematisch einen Teilquerschnitt des Aufbaus einer herkömmlichen Biegemaschine. Bezugszeichen 1 ist ein Biegetisch, der mit einer Biegewange ausgestattet ist. Darauf liegt die zu biegende Druckplatte 2, die von einer Niederhalterplatte 3 im Bereich der Druckleiste 4 auf den Biegetisch gedrückt wird. Wenn die Druckplatte 2 fest eingeklemmt ist, wird das Ende der Druckplatte 2 mittels des Biegebalkens 6 zu einer Kante gebogen. Dieser Biegevorgang hat für die gesamte Druckplatte möglichst exakt zu erfolgen, denn sind die Biegekanten auf beiden Längsseiten der Druckplatte, d.h. den Kanten auf Vorlauf- und Nachlaufseite der Druckplatte, nicht exakt ausgeführt, so kommt es bei hohen Druckgeschwindigkeiten zu einer verminderten Druckqualität.Figure 1 shows schematically a partial cross section of the structure of a conventional bending machine. Reference numeral 1 is a bending table equipped with a bending cheek. This is to be bent pressure plate 2, which is pressed by a hold-down plate 3 in the region of the pressure bar 4 on the bending table. When the pressure plate 2 is firmly clamped, the end of the pressure plate 2 is bent by means of the bending beam 6 to an edge. This bending process has to be as accurate as possible for the entire printing plate, because the bending edges on both longitudinal sides of the printing plate, ie the edges on the leading and trailing side of the printing plate, not exactly executed, it comes at high printing speeds to a reduced print quality.

Demnach ergibt sich für die vorliegende Erfindung die Aufgabe, eine Biegemaschine bereit zu stellen, mit der es möglich ist, Biegekanten insbesondere an einer Druckplatte mit hoher Genauigkeit herzustellen.Accordingly, the object of the present invention is to provide a bending machine with which it is possible to produce bending edges, in particular on a printing plate with high accuracy.

Diese Aufgabe wird gemäß des unabhängigen Anspruchs der vorliegenden Erfindung gelöst. Die abhängigen Ansprüche sind vorteilhafte Ausgestaltungen der Erfindung.This object is achieved according to the independent claim of the present invention. The dependent claims are advantageous embodiments of the invention.

Gemäß einem ersten Aspekt der Erfindung ist eine Biegemaschine zum Biegen einer Druckmaschinendruckplatte vorgesehen, wobei die Biegemaschine einen Biegetisch aufweist, auf dem das zu bearbeitende Blech bzw. die Druckmaschinendruckplatte für den Biegevorgang abgelegt wird. Mittels einer Druckleiste, die an einer Niederhalterplatte befestigt ist, wird die Druckplatte auf dem Biegetisch fixiert. Das Fixieren erfolgt in unmittelbarer Nähe zu der herzustellenden Biegekante, bevor ein Biegebalken das Blech über eine Biegewange mit dem entsprechenden für das Blech vorgesehenen Winkel gebogen wird. Die Niederhalterplatte wird über eine entsprechende Mechanik bis unmittelbar an das Blech herangefahren, so dass ein definierter Abstand zwischen der Druckleiste und dem zu biegenden Blech entsteht. Die an der Niederhalterplatte befestigte Druckleiste kann eine Relativbewegung gegenüber der Niederhalterplatte ausführen. Aufgrund dieser Relativbewegung ist es möglich, ein feinjustiertes Fixieren des Bleches auf dem Biegetisch vorzunehmen. Dieses feinjustierte Fixieren geschieht über die Druckleistenfläche gleichmäßiger als das im Stand der Technik möglich war, so dass das Blech entlang der herzustellenden Biegekante mit einer gleichmäßiger verteilten Kraft gehalten wird. Damit wird ein genaueres Biegen des Bleches möglich ist.According to a first aspect of the invention, there is provided a bending machine for bending a printing press plate, wherein the bending machine comprises a bending table on which the sheet to be processed or the printing press plate for the bending operation is deposited. By means of a pressure bar, which is attached to a hold-down plate, the pressure plate is fixed on the bending table. The fixing takes place in the immediate vicinity of the bending edge to be produced, before a bending beam, the sheet is bent over a bending cheek with the appropriate angle provided for the sheet. The hold-down plate is moved up via a corresponding mechanism to directly to the plate, so that a defined distance between the pressure bar and the sheet to be bent arises. The attached to the hold-down plate pressure bar can perform a relative movement relative to the hold-down plate. Due to this relative movement, it is possible to perform a finely adjusted fixing of the sheet on the bending table. This finely adjusted fixing takes place via the pressure strip surface more uniformly than was possible in the prior art, so that the sheet is held along the bending edge to be produced with a uniform distributed force. Thus, a more accurate bending of the sheet is possible.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist zum Ausführen der Relativbewegung der Druckleiste gegenüber der Niederhalterplatte ein Linearantrieb vorgesehen. Der Linearantrieb kann vorteilhafterweise über die gesamte Länge der Druckleiste die zum Fixieren der Druckplatte notwendige Klemmkraft möglichst gleichmäßig einleiten. Denn für den Erfindungsgedanken ist es wesentlich, dass auf der gesamten Länge der zu biegenden Kante eine möglichst gleiche Klemmkraft wirkt. Unterschiedliche Klemmkräfte entlang der herzustellenden Biegekante würden auch zu verschieden ausgeprägten Kantenabschnitten führen.According to an advantageous embodiment of the invention, a linear drive is provided for carrying out the relative movement of the pressure bar relative to the hold-down plate. The linear drive can advantageously initiate the clamping force necessary for fixing the pressure plate as uniformly as possible over the entire length of the pressure bar. Because for the idea of the invention it is essential that on the entire length of the edge to be bent as much as possible clamping force acts. Different clamping forces along the bending edge to be produced would also lead to differently pronounced edge portions.

Gemäß einer vorteilhaften Ausgestaltung wird als Linearantrieb ein dehnbarer Schlauch verwendet, der vorzugsweise aus Silikon besteht, welcher zum Einleiten der Klemmkraft mit einem Fluid befüllt wird. Als Fluid kann beispielsweise Druckluft verwendet werden. Der Schlauch ist zwischen der Niederhalterplatte und der Druckleiste angeordnet und stützt sich an der Niederhalterplatte ab, um die Klemmkraft, die durch das Ausdehnen den Schlauchs entsteht, auf das zu biegende Blech zu übertragen. Um eine möglichst gleichmäßige Kraftübertragung über die gesamte Länge der Druckleiste zu bewirken, ist es sinnvoll, dass der Schlauch zwischen der Niederhalterplatte und der Druckleiste in Längsrichtung der Druckleiste verläuft, d.h. in Richtung und entlang der zu biegenden Kante verläuft. Allerdings können an Stelle dieser Anordnung auch andere Geometrien für den Verlauf des Schlauches verwendet werden, sofern nur das Prinzip einer gleichmäßigen Kraftübertragung verwirklicht ist. Als Material für den zu verwendenden Schlauch wird vorzugsweise Silikon verwendet, allerdings sind alle Materialien, die eine ausreichende radiale Ausdehnung ermöglichen, denkbar.According to an advantageous embodiment, an extensible hose is used as the linear drive, which preferably consists of silicone, which is filled to initiate the clamping force with a fluid. As a fluid, for example, compressed air can be used. The tube is arranged between the hold-down plate and the pressure bar and is supported on the hold-down plate in order to transmit the clamping force, which results from the expansion of the tube, to the sheet to be bent. In order to bring about a uniform force transmission over the entire length of the pressure bar, it makes sense that the hose between the hold-down plate and the pressure bar runs in the longitudinal direction of the pressure bar, i. in the direction and along the edge to be bent. However, other geometries for the course of the hose can be used instead of this arrangement, provided that only the principle of a uniform force transmission is realized. Silicone is preferably used as the material for the hose to be used, but all materials which permit sufficient radial expansion are conceivable.

Gemäß einer weiteren erfindungsgemäßen Ausgestaltung ist eine Druckleiste zweiteilig aufgebaut und besteht aus einem Federelement und einer Kunststoffleiste. Der zweiteilige Aufbau ermöglicht die Befestigung der Druckleiste an der Niederhalterplatte, ohne dass die Druckleiste selbst auf Biegung beansprucht werden können muss. Allerdings ist auch denkbar, das Material der Druckleiste so zu wählen, dass diese an der Niederhalterplatte befestigt werden kann und mittels des Schlauches von der Niederhalterplatte weggedrückt werden kann.According to another embodiment of the invention, a pressure bar is constructed in two parts and consists of a spring element and a plastic strip. The two-part construction allows the mounting of the pressure bar on the hold-down plate, without the pressure bar itself having to be subjected to bending. However, it is also conceivable to choose the material of the pressure bar so that it can be attached to the hold-down plate and can be pushed away by means of the hose from the hold-down plate.

Bei einem zweiteiligen Aufbau ist vorgesehen, dass das Federelement ein Blech aus Federstahl ist, das an einer Längsseite, die der Länge der zu biegenden Kante entspricht, z.B. mittels Schrauben an der Niederhalterplatte befestigt ist, und an der anderen Längsseite die Kunststoffleiste aufweist, die dann über den sich ausdehnenden Schlauch gegen das zu biegende Blech bzw. die Druckplatte gepresst wird.In a two-part structure is provided that the spring element is a sheet of spring steel, which is attached to a longitudinal side corresponding to the length of the edge to be bent, for example by means of screws to the hold-down plate, and to the other longitudinal side has the plastic strip, which is then pressed over the expanding hose against the sheet to be bent or the pressure plate.

Anstatt des zweiteiligen Aufbaus mit einem Federelement sind diverse Konstruktionen denkbar, die es ermöglichen, ein als Druckleiste wirkendes Element beweglich an der Niederhalterplatte zu befestigen, so dass eine Relativbewegung zwischen Niederhalterplatte und der Druckleiste möglich wird.Instead of the two-part construction with a spring element various constructions are conceivable, which make it possible to attach a pressure acting as a bar element movable on the hold-down plate, so that a relative movement between hold-down plate and the pressure bar is possible.

Gemäß einer weiteren Ausgestaltung der Erfindung ist der-Schlauch in einer Nut der Niederhalterplatte vorgesehen, so dass eine definierte lineare Bewegung in Richtung des zu biegenden Bleches möglich wird. Die Nut ist vorzugsweise so tief ausgelegt, dass der Schlauch im Ruhezustand vollständig in der Niederhalterplatte untergebracht ist, und die Druckleiste sich formschlüssig an die Niederhalterplatte anlegt. Dieser Aufbau ist allerdings nicht zwingend, vorstellbar ist auch eine Konstruktion, in der der Schlauch in der Druckleiste untergebracht ist, so dass eine weitergehende Bearbeitung der Niederhalterplatte nicht mehr notwendig wird. Um den definierten Abstand zwischen der Niederhalterplatte und dem zu biegenden Blech einzustellen, ist es ferner vorteilhaft, einen Abstandhalter vorzusehen, welcher z.B. mittels einer Anschlagschraube verwirklicht sein kann, die ein variables Einstellen des Abstandes zwischen Niederhalterplatte und zu biegendem Blech bzw. Biegetisch ermöglicht.According to a further embodiment of the invention, the hose is provided in a groove of the hold-down plate, so that a defined linear movement in the direction of the sheet to be bent is possible. The groove is preferably designed so deep that the hose is completely housed in the idle state in the hold-down plate, and the pressure bar engages positively against the hold-down plate. However, this structure is not mandatory, is also conceivable a construction in which the hose is housed in the pressure bar, so that a further processing of the hold-down plate is no longer necessary. In order to set the defined distance between the hold-down plate and the sheet to be bent, it is further advantageous to provide a spacer, which e.g. can be realized by means of a stop screw, which allows a variable adjustment of the distance between hold-down plate and bending sheet metal or bending table.

Nachstehend wird anhand der Zeichnung eine vorteilhafte Ausführungsform der Erfindung erläutert. Es zeigt:

Figur 1:
einen Ausschnitt der Biegemaschine an der Biegewange, wie sie aus dem Stand der Technik bekannt ist,
Figur 2:
den der Figur 1 entsprechenden Ausschnitt bei einer Biegemaschine gemäß der vorliegenden Erfindung im Ruhezustand,
Figur 3:
den Ausschnitt aus Figur 2, wobei die Druckleiste die Druckplatte klemmt.
Hereinafter, an advantageous embodiment of the invention will be explained with reference to the drawing. It shows:
FIG. 1:
a section of the bending machine on the bending cheek, as known from the prior art,
FIG. 2:
1 corresponding detail in a bending machine according to the present invention in the resting state,
FIG. 3:
the detail of Figure 2, wherein the pressure bar clamps the pressure plate.

Figur 2 zeigt eine Druckplatte 2, die auf einem Biegetisch 1 so angeordnet ist, dass die herzustellende Biegekante über der Biegewange 5 des Biegetisches angeordnet ist. Die Niederhalterplatte 3 ist mittels der Anschlagschraube 8 in einem definierten Abstand zu der Druckplatte 2 gehalten. Figur 2 zeigt die erfindungsgemäße Ausführungsform in einem nicht aktivierten Zustand, d.h. die Druckleiste 4 liegt noch an der Niederhalterplatte 3 an und klemmt noch nicht die Druckplatte 2 auf dem Biegetisch 1. Die Druckleiste 4 besteht aus einer Blechschiene 9, die mittels Schrauben 10 an der Niederhalterplatte 3 befestigt ist. Die Blechschiene 9 ist aus Federstahl hergestellt, so dass die Kunststoffleiste 11, die an der Blechschiene 9 z.B. mittels Klebens befestigt ist, über den Schlauch 7 in der Nut 12 nach unten gedrückt wird, sobald der Schlauch 7 mit Druckluft versorgt wird.Figure 2 shows a pressure plate 2 which is arranged on a bending table 1 so that the bending edge to be produced is arranged above the bending cheek 5 of the bending table. The hold-down plate 3 is held by means of the stopper screw 8 at a defined distance from the pressure plate 2. Figure 2 shows the embodiment of the invention in an unactivated state, i. the pressure bar 4 is still on the hold-down plate 3 and does not yet clamp the pressure plate 2 on the bending table 1. The pressure bar 4 consists of a sheet metal rail 9, which is fastened by means of screws 10 to the hold-down plate 3. The sheet metal rail 9 is made of spring steel, so that the plastic strip 11, which is connected to the sheet metal rail 9, e.g. is attached by gluing, is pushed over the tube 7 in the groove 12 down when the tube 7 is supplied with compressed air.

Figur 3 zeigt die erfindungsgemäße Ausführungsform im aktivierten Zustand, d.h. nun befindet sich Druckluft in dem Schlauch 7, so dass die Druckleiste 4, bestehend aus Blechschiene 9 und Kunststoffleiste 11 auf den Biegetisch gedrückt wird und so die Druckplatte klemmt. Da der Schlauch 7 entlang der gesamten Länge der Druckleiste 4 bzw. der Blechschiene 9 verläuft, kommt es zu einer gleichmäßigen Beaufschlagung der Druckplatte mit einer aus der Ausdehnung des Schlauches 7 resultierenden Kraft. Ist die Druckplatte 2 geklemmt, kann mittels des Biegebalkens 6 der eigentliche Biegevorgang eingeleitet werden. Aufgrund der gleichmäßigen Haltekraft auf Seiten der Druckleiste und der gleichmäßigen Biegekraft, die durch den Biegebalken 6 eingeleitet wird, entsteht eine präzise Biegekante.Figure 3 shows the embodiment of the invention in the activated state, ie now there is compressed air in the tube 7, so that the pressure bar 4, consisting of sheet metal rail 9 and plastic strip 11 is pressed onto the bending table and so clamps the pressure plate. Since the tube 7 extends along the entire length of the pressure bar 4 or the sheet metal rail 9, there is a uniform loading of the pressure plate with a force resulting from the expansion of the tube 7. If the pressure plate 2 clamped, the actual bending process can be initiated by means of the bending beam 6. Due to the uniform holding force on the side of the pressure bar and the uniform bending force which is introduced by the bending beam 6, creates a precise bending edge.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Biegetischbending table
22
Druckplatteprinting plate
33
NiederhalterplatteDown plate
44
Druckleisteprint bar
55
Biegewangebending beam
66
Biegebalkenbending beam
77
Schlauchtube
88th
Anschlagschraubestop screw
99
Blechschienesheet-metal rail
1010
Schraubescrew
1111
KunststoffleistePlastic strip
1212
Nutgroove

Claims (8)

Biegemaschine zum Biegen einer Druckmaschinendruckplatte (2) mit einem Biegetisch (1) zum Aufnehmen der Druckmaschinendruckplatte (2), einem Biegebalken und einer an einer Niederhalterplatte (3) befestigten Druckleiste (4) zum Fixieren der Druckmaschinendruckplatte (2) auf dem Biegetisch (1), dadurch gekennzeichnet, dass die Druckleiste (4) eine Relativbewegung mit mindestens einem Freiheitsgrad gegenüber der Niederhalterplatte (3) ausführen kann.Bending machine for bending a printing machine printing plate (2) with a bending table (1) for receiving the printing press plate (2), a bending beam and a pressure bar (4) attached to a hold-down plate (3) for fixing the printing machine pressure plate (2) on the bending table (1) , characterized in that the pressure bar (4) can perform a relative movement with at least one degree of freedom relative to the hold-down plate (3). Biegemaschine nach Anspruch 1, dadurch gekennzeichnet, dass zum Ausführen der Bewegung der Druckleiste (4) ein Linearantrieb (7) vorgesehen ist, der über die gesamte Länge der Druckleiste (4) die zum Fixieren der Druckmaschinendruckplatte (2) auf dem Biegetisch (1) notwendige Klemmkraft gleichmäßig einleitet.Bending machine according to claim 1, characterized in that for carrying out the movement of the pressure strip (4) a linear drive (7) is provided, which over the entire length of the pressure strip (4) for fixing the printing press plate (2) on the bending table (1). necessary clamping force initiates uniformly. Biegemaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Druckleiste (4) senkrecht zur Niederhalterplatte (3) beweglich ist.Bending machine according to one of the preceding claims, characterized in that the pressure bar (4) perpendicular to the hold-down plate (3) is movable. Biegemaschine nach einem der Ansprüche 2 oder 3, gekennzeichnet durch einen mittels eines Fluids radial ausdehnbaren Schlauch (7) als Linearantrieb, der zwischen Niederhalterplatte (3) und Druckleiste (4) angeordnet ist und sich zur Kraftübertragung an der Niederhalterplatte (3) abstützt.Bending machine according to one of claims 2 or 3, characterized by a radially expandable by means of a fluid hose (7) as a linear drive, which is arranged between hold-down plate (3) and pressure bar (4) and is supported for transmitting power to the hold-down plate (3). Biegemaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Fluid Druckluft ist und es sich bei dem Schlauch (7) um einen Silikonschlauch handelt.Bending machine according to one of the preceding claims, characterized in that the fluid is compressed air and the hose (7) is a silicone hose. Biegemaschine nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Druckleiste (4) ein Federelement (9) und eine Kunststoffleiste (11) aufweist, wobei das Federelement (9) an einer ersten Längsseite an der Niederhalterplatte (3) befestigt ist und zwischen einer zweiten Längsseite und der Niederhalterplatte (3) der Schlauch (7) angeordnet ist.Bending machine according to claim 4 or 5, characterized in that the pressure bar (4) has a spring element (9) and a plastic strip (11), wherein the spring element (9) is attached to a first longitudinal side of the hold-down plate (3) and between a second longitudinal side and the hold-down plate (3) of the hose (7) is arranged. Biegemaschine nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass der Schlauch in einer Nut (12) in der Niederhalterplatte (3) so gelagert ist, dass über die Ausdehnungsmöglichkeit des Schlauches (7) die Antriebsrichtung des Linearantriebs definiert ist.Bending machine according to one of claims 4 to 6, characterized in that the hose in a groove (12) in the hold-down plate (3) is mounted so that on the expansion possibility of the hose (7), the drive direction of the linear drive is defined. Biegemaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass ein Abstandhalter (8) an der Niederhalterplatte (3) vorgesehen ist, um einen definierten Abstand zwischen Niederhalterplatte (3) und Biegetisch zu gewährleisten.Bending machine according to one of the preceding claims, characterized in that a spacer (8) on the hold-down plate (3) is provided to ensure a defined distance between hold-down plate (3) and bending table.
EP06019213A 2005-09-23 2006-09-14 Bending machine with movable pressure strip Expired - Fee Related EP1767361B1 (en)

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DE102005045506A DE102005045506A1 (en) 2005-09-23 2005-09-23 Bending machine with movable pressure bar

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EP1767361A2 true EP1767361A2 (en) 2007-03-28
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9422542B2 (en) 2010-02-26 2016-08-23 Qiagen Gmbh Process for parallel isolation and/or purification of RNA and DNA
CN110961500A (en) * 2019-12-03 2020-04-07 江苏博阳智能装备有限公司 High-precision bus bar bending structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2567475A (en) * 2017-10-13 2019-04-17 Asm Assembly Systems Singapore Pte Ltd Inflatable pneumatic stencil clamp

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3340144C2 (en) 1983-11-07 1990-01-11 2 B Praezisionstechnik Gmbh Fuer Druck Und Industrie, 8011 Forstern, De
DE4128863C1 (en) 1991-08-30 1992-10-01 Man Roland Druckmaschinen Ag, 6050 Offenbach, De Bending appts. for offset printing plates - has bending plate with recess, starting at plate abutment and extending up to bending edge

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450098A (en) * 1968-04-02 1969-06-17 Diamond Int Corp Doctor for paper-making machine
US3592037A (en) * 1969-01-27 1971-07-13 Mark Products Corp Van Sheet metal bending brake
BE760001A (en) * 1969-12-11 1971-05-17 Ampex MAGNETIC TAPE PRESSURE PAD AGAINST A READ-RECORDING HEAD
US3927695A (en) * 1973-05-21 1975-12-23 Union Carbide Corp Silicone rubber hose
US3914974A (en) * 1974-04-19 1975-10-28 William Devore Lithographic plate bending arrangement
US4901963A (en) * 1985-06-20 1990-02-20 Universal Consolidated Methods, Inc. Adjustable clamp
US4939862A (en) * 1986-09-02 1990-07-10 Ram-Line, Inc. Method and apparatus for orienting and loading cartridges
DE3636600A1 (en) * 1986-10-28 1988-05-05 Hoesch Maschinenfabrik Ag HEATING PRESS FOR COMPRESSING TECHNICAL LAMINATES
DE9317726U1 (en) * 1992-12-24 1994-02-03 Koenig & Bauer AG, 97080 Würzburg spindle
US5335046A (en) * 1993-02-22 1994-08-02 Intergraph Corporation Clamping mechanism for use on a rotatable plotter drum
EP0740607B1 (en) * 1994-01-17 1998-04-01 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Device for assembling, dismantling and transporting easily bent, arc-shaped objects with folded suspension edges
DE4401201C2 (en) * 1994-01-18 1996-08-01 Koenig & Bauer Albert Ag Device for holding an arcuate support
DE19621658C2 (en) * 1996-05-30 1999-11-04 Eht Werkzeugmaschinen Gmbh Processing machine for plate-shaped workpieces, in particular for producing curved edges on sheet metal parts
US5700357A (en) * 1996-10-16 1997-12-23 Beloit Technologies, Inc. Mechanical blanket clamp in rotating head assembly
US5987949A (en) * 1997-03-18 1999-11-23 Heidelburg Harris, Inc. Plate scanner--bending device
DE19743520B4 (en) * 1997-10-01 2005-12-08 Voith Paper Patent Gmbh Squeegee device for a device for applying a liquid to pasty medium on a passing underground
DE19924786B4 (en) * 1999-05-29 2004-11-04 Koenig & Bauer Ag Device for attaching a flexible plate to a cylinder of a rotary printing press
DE19924785C2 (en) * 1999-05-29 2001-04-19 Koenig & Bauer Ag Device for fastening flexible plates
DE19924787B4 (en) * 1999-05-29 2004-11-04 Koenig & Bauer Ag Device for attaching flexible plates
JP2002119556A (en) * 2000-10-19 2002-04-23 Nippon Colin Co Ltd Foot bending and stretching device
FI20020683A0 (en) * 2001-07-05 2002-04-10 Vaahto Oy Press roller
FI111562B (en) * 2002-01-16 2003-08-15 Metso Paper Inc A method and apparatus for applying a treating agent to a moving surface
DE10338374A1 (en) * 2003-08-21 2005-03-17 Koenig & Bauer Ag Printing plate guide device for printing plate changer has clamping gap shaped to produce required geometry of rear edge
US7225737B2 (en) * 2003-12-09 2007-06-05 Kodak Graphic Communications Canada Company Method for automated platemaking
DE102004020694A1 (en) * 2004-04-28 2005-11-24 Heidelberger Druckmaschinen Ag Device for clamping and holding a printing plate on a printing plate on an exposure drum
DE102004028754A1 (en) * 2004-06-16 2006-01-05 Voith Paper Patent Gmbh doctor bed
US7275480B2 (en) * 2004-12-20 2007-10-02 Allpax Products Llc Retort basket securing system
US20070033979A1 (en) * 2005-08-15 2007-02-15 Deis Robert M Methods and apparatuses for making lithographic plates

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3340144C2 (en) 1983-11-07 1990-01-11 2 B Praezisionstechnik Gmbh Fuer Druck Und Industrie, 8011 Forstern, De
DE4128863C1 (en) 1991-08-30 1992-10-01 Man Roland Druckmaschinen Ag, 6050 Offenbach, De Bending appts. for offset printing plates - has bending plate with recess, starting at plate abutment and extending up to bending edge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9422542B2 (en) 2010-02-26 2016-08-23 Qiagen Gmbh Process for parallel isolation and/or purification of RNA and DNA
CN110961500A (en) * 2019-12-03 2020-04-07 江苏博阳智能装备有限公司 High-precision bus bar bending structure

Also Published As

Publication number Publication date
EP1767361A3 (en) 2009-12-09
DE102005045506A1 (en) 2007-03-29
EP1767361B1 (en) 2011-11-23
US7963223B2 (en) 2011-06-21
US20070068213A1 (en) 2007-03-29

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