EP1046503B1 - Device for controlling the position of printing plates - Google Patents
Device for controlling the position of printing platesInfo
- Publication number
- EP1046503B1 EP1046503B1 EP00107762A EP00107762A EP1046503B1 EP 1046503 B1 EP1046503 B1 EP 1046503B1 EP 00107762 A EP00107762 A EP 00107762A EP 00107762 A EP00107762 A EP 00107762A EP 1046503 B1 EP1046503 B1 EP 1046503B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing plate
- plate
- printing
- fastening device
- fastening apparatus
- 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
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
- B41P2227/30—Detecting the correct position of printing plates on the cylinder
Definitions
- the invention relates to a device for controlling the position of printing plates.
- the invention relates to a device for controlling the position of printing plates on the plate cylinder of printing machines, in particular sheet-fed offset printing machines according to the preamble of claim 1.
- Damage in the field of punching for example, by multiple-use printing plates, can cause the electrically conductive connection is not made in spite of the correct plate system and accordingly an incorrect record system is signaled.
- a device for aligning printing plates on the plate cylinder of a rotary printing machine which is arranged in the fastening device for the leading edge of the printing plate.
- This alignment element is formed at the end facing the printing plate leading edge as Rgisterloch and arranged at an angle to the open detection range of the printing plate.
- Object of the present invention is therefore to develop a device for controlling the position of printing plates on the plate cylinder of printing machines according to the preamble of claim 1 such that, while avoiding the disadvantages mentioned above, a simple determination of the correct disk register is possible.
- the stops cooperating with the U-shaped punched-out on the pressure plate leading edge perform a movement generated in closing the fastening device in the direction of pressure plate, such that the voltage applied to the movable stops with the punched pressure plate is pushed out by a defined amount and thereby assumes the register-oriented position.
- the fastening device is associated with a position sensor, which cooperates with the front edge of the printing plate outside the range of U-shaped punched outs.
- the position sensor is arranged such that in the open detection range of the fastening device generates a signal with its U-shaped punched to the stops pressure plate.
- a signal can be generated, which can be removed that the pressure plate has been inserted deep enough into the detection range of the fastening device and guaranteed closed registering device, ie in the clamped state, assumes the register-correct position.
- the arrangement of the position sensor based on the depth of the U-shaped punched-out as well as the stroke of the stops when closing the fastening device are matched accordingly. As a result, it is not necessary to provide additional punches on the printing plate which has a relation to the subject located on the printing plate.
- the one or more position sensors are designed as electrically interrogatable contact pins with which the front edge of the pressure plate cooperates outside of the range of U-shaped punched out.
- These electrically interrogatable contact pins can have large contact surfaces, so that a slightly corrugated or slightly damaged pressure plate guarantees electrical contact and thus generates the corresponding signal. If the stroke to be performed during closing of the fastening device of the stops interacting with the punched-out portions is chosen to be large enough, then larger tolerances with regard to the plate leading edge and the depth of the punched-out holes are also ineffective.
- electrically interrogatable pins can also be used according to another principle operating position sensor.
- resilient Taststarte which in turn actuate an electrical contact.
- Such position sensors then also enable the use of electrically non-conductive printing plates.
- non-contact distance sensors with which the presence of the printing plate front edge can be detected within a predetermined range in the fastening device. Again, it is ultimately essential that this area is ultimately tuned to the stroke of the attacks, that the pressure plate with the fastening device closed (ie after execution of the stroke) assumes the register-correct position.
- the evaluation unit downstream of the position sensor can be designed to evaluate both the contact of the printing plate leading edge and the signal change "pressure plate is located - pressure plate is no longer located". This can be done by the operator to whom the printing plate system is signaled by a corresponding display means. "The evaluation unit can also be in operative connection with the machine control, which in turn signals remotely operated devices for closing the fastening device generated.
- the signal change "Pressure plate is on - pressure plate is not on” when closing the fastening device (stops perform stroke) the signal reproducing the register-compliant system. If the pressure plate is located on the positioner when the fastening device is open, and if it is lifted off by the strokes that execute the stroke (signal change), the pressure plate assumes the register-correct position when the fastening device is closed.
- the stops which perform the stroke during the closing of the fastening device are connected to the cylinder-fixed part of the fastening device via a few leaf springs.
- the leaf springs are biased so that the cooperating with the U-shaped punch stop element is moved when closing as opposed to a parallelogram suspension against the feed direction for the printing plate. Due to the length of the leaf spring elements and the geometry of the arrangement, the stroke of the stop when closing the fastening device can be choose.
- the suspension of the so mounted on leaf springs stop can be adjusted in total still an adjustment.
- Fig. 1 shows in principle a plate cylinder 2 with a therein and the leading edge of the pressure plate 1 detected fastening device 3.
- the fastening device 3 is designed as a known clamping rail and requires no further explanation at this point.
- two U-shaped punched-out 6.7 are attached, with which the arranged in the fastening device 3 stops 4, 5 (register pins) cooperate. Furthermore, in the fastening device 3, two outer areas of the printing plate leading edge groping position sensor 8, 9 are arranged. By the position sensor 8, 9, the presence of the front edge of the printing plate 1 in the fastening device 3 can be detected.
- the position sensors 8, 9 can be designed in particular as electrically insulated contacts. The signals of the position sensor 8, 9 are fed to an evaluation unit 10, through which the system of the printing plate 1 can be displayed and / or the closing of the fastening device 3 for printing plate 1 can be triggered.
- Fig. 2 and 3 shows the operation of the device according to the invention.
- the pressure plate 1 is inserted into the fastening device 3, so that the front edge of the pressure plate 1 with the position sensors 8, 9 get in touch.
- the position sensors 8, 9 give signals to the evaluation unit 10, which can be signaled by a display device that the pressure plate 1 is applied and the fastening device 3 can be closed.
- the arrangement of the position sensor 8, 9 with respect to the stops 4, 5 is such that - as indicated in Fig. 2 - the contours of the punched-6.7 still have a distance a, b to the stops 4, 5.
- Fig. 3 shows the register-correct position of the printing plate 1, that is the position in which the printing plate 1 is fixed by the fixing device 3 on the plate cylinder 1.
- the fastening device 3 consists of a cylinder fixed and designed as a rail shell 11 and also designed as a rail, radially movable base 12. Between the lower part 12 and the upper part 11 results in a trained as a gap Detection area for the pressure plate 1, not shown in FIGS. 4 and 5.
- the stops 4, 5 are each attached via a pair of prestressed leaf springs 13, 14 by means of a block 15 on the cylinder-tight upper part 11.
- the rail of the upper part 11 has a recess in this area.
- the screwed to the rail of the upper part 11 Bock 15 is further adjustable via a designed as a set screw adjusting 16.
- the stops 4.5 supporting leaf springs 13, 14 have such a bias, so that when supplying a pressure plate 1 in the open fastening device 3 (Fig. 4) of the stop 4, 5 on the top of the Rail of the lower part 12 rests.
- the stop 4, 5 By closing the fastening device 3 (lower rail part 12), the stop 4, 5 pressed against the bias of the leaf springs 13,14 and thus performs a defined stroke h (Fig. 5), wherein when the fastening device 3 is closed, the stop 4, 5 the register-correct position for the printing plate 1 defined.
Landscapes
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Character Spaces And Line Spaces In Printers (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
Description
Die Erfindung betrifft eine Einrichtung zur Kontrolle der Lage von Druckplatten.The invention relates to a device for controlling the position of printing plates.
Die Erfindung betrifft eine Einrichtung zur Kontrolle der Lage von Druckplatten auf dem Plattenzylinder von Druckmaschinen, insbesondere Bogenoffsetdruckmaschinen gemäß dem Oberbegriff von Anspruch 1.The invention relates to a device for controlling the position of printing plates on the plate cylinder of printing machines, in particular sheet-fed offset printing machines according to the preamble of
Aus der EP 0 581212 B1 ist eine Einrichtung für die Kontrolle der registergerechten Lage von Druckplatten auf dem Plattenzylinder von Druckmaschinen bekannt, wobei die mit U-förmigen Ausstanzungen an der Druckplattenvorderkante zusammenwirkenden Anschläge (Registerstifte) Erfassungsmittel aufweisen, so daß ein Kontakt des Registerstiftes mit der Ausstanzung nur dann detektiert wird, wenn der Bodenbereich der Ausstanzung an der entsprechenden Fläche des Registerstiftes anliegt. Dies erfolgt insbesondere dadurch, daß in dem Registerstift elektrisch isoliert ein Kontaktelement angebracht ist, so daß durch die elektrisch leitende Druckplatte bei korrekter Anlage eine Verbindung zwischen dem Registerstift und diesem Kontaktelement hergestellt wird. Diese leitende Verbindung ist durch eine Auswerteschaltung erfaßbar und an einer Anzeigevorrichtung darstellbar.From EP 0 581212 B1 a device for controlling the register-oriented position of printing plates on the plate cylinder of printing machines is known, wherein cooperating with U-shaped punched on the pressure plate leading edge stops (register pins) detecting means, so that a contact of the register pin with the Punching is detected only when the bottom portion of the punched out abuts the corresponding surface of the register pin. This is in particular the fact that in the register pin electrically insulated, a contact element is mounted so that a connection between the register pin and this contact element is made by the electrically conductive pressure plate with correct contact. This conductive connection can be detected by an evaluation circuit and displayed on a display device.
Nachteilig ist hierbei, daß diese elektrische Abfrage bei Verunreinigung im Bereich Registerstift - Ausstanzung zur Störungen führen kann. Obwohl die Druckplatte mit dem Bodenbereich der Ausstanzung korrekt am Stift anliegt, wird eine nicht korrekte Anlage signalisiert.The disadvantage here is that this electrical query can lead to interference in contamination in the area register pin - punched. Although the pressure plate with the bottom portion of the punched out correctly abuts the pin, an incorrect installation is signaled.
Auch Beschädigungen im Bereich der Ausstanzungen, beispielsweise durch mehrfach gebrauchte Druckplatten, können dazu führen, daß die elektrisch leitende Verbindung trotz korrekter Plattenanlage nicht hergestellt wird und entsprechend eine nicht korrekte Plattenanlage signalisiert wird.Damage in the field of punching, for example, by multiple-use printing plates, can cause the electrically conductive connection is not made in spite of the correct plate system and accordingly an incorrect record system is signaled.
Bei Verwendung von nicht elektrisch leitenden Druckplatten sind ferner aufwendige Sensormittel im Registerstift anzuordnen, so daß sich der bau- und signaltechnische Aufwand entsprechend erhöht.When using non-electrically conductive printing plates elaborate sensor means are also to be arranged in the register pin, so that increases the construction and signaling complexity accordingly.
Aus der DD-BS 116426 ist eine Einrichtung zum Ausrichten von Druckplatten auf dem Plattenzylinder einer Rotationsdruckmaschine bekannt, das in der Befestigungsvorrichtung für die vorauslaufende Kante der Druckplatte angeordnet ist. Dieses Ausrichtelement ist an dem zur Druckplattenvorderkante weisenden Ende als Rgisterstift ausgebildet und in einem Winkel zu dem geöffneten Erfassungsbereich der Druckplatte angeordnet. Beim Schließen der Befestigungsvorrichtung (Klemmen) wird so der als Registerstift ausgebildete Anschlag in Richtung Druckplattenvorderkante geschoben, wobei die Druckplatte letztlich in geschlossenem Zustand der Befestigungsvorrichtung die registergerechte Lage einnimmt. Bei dieser vorbekannten Einrichtung ist jedoch keine Sensorik oder sonstige Feststellungsmittel für die Kontrolle der registergerechten Anlage der Druckplatte vorgesehen.From DD-BS 116426 a device for aligning printing plates on the plate cylinder of a rotary printing machine is known, which is arranged in the fastening device for the leading edge of the printing plate. This alignment element is formed at the end facing the printing plate leading edge as Rgisterstift and arranged at an angle to the open detection range of the printing plate. When closing the fastening device (terminals) so designed as a register pin stop is pushed towards the printing plate leading edge, wherein the pressure plate ultimately occupies the register-oriented position in the closed state of the fastening device. In this prior art device, however, no sensor or other detection means for the control of the register-oriented system of the printing plate is provided.
Aufgabe der vorliegenden Erfindung ist es daher, eine Einrichtung zur Kontrolle der Lage von Druckplatten auf dem Plattenzylinder von Druckmaschinen gemäß dem Oberbegriff von Anspruch 1 derartig weiterzubilden, so daß unter Vermeidung der zuvorstehend genannten Nachteile eine einfache Feststellung des korrekten Plattenregisters möglich ist.Object of the present invention is therefore to develop a device for controlling the position of printing plates on the plate cylinder of printing machines according to the preamble of
Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by the characterizing features of
Gemäß der Erfindung ist vorgesehen, daß die mit den U-förmigen Ausstanzungen an der Druckplattenvorderkante zusammenwirkenden Anschläge eine beim Schließen der Befestigungsvorrichtung erzeugte Bewegung in Richtung Druckplatte ausführen, derart, daß die an den bewegbaren Anschlägen mit den Ausstanzungen anliegende Druckplatte um ein definiertes Maß herausgeschoben wird und dadurch die registergerechte Lage einnimmt. Der Befestigungsvorrichtung ist ein Lagegeber zugeordnet, der mit der Vorderkante der Druckplatte außerhalb des Bereiches der U-fömigen Ausstanzungen zusammenwirkt. Der Lagegeber ist dergestalt angeordnet, daß die im geöffneten Erfassungsbereich der Befestigungsvorrichtung mit ihren U-förmigen Ausstanzungen an den Anschlägen anliegende Druckplatte ein Signal generiert.According to the invention it is provided that the stops cooperating with the U-shaped punched-out on the pressure plate leading edge perform a movement generated in closing the fastening device in the direction of pressure plate, such that the voltage applied to the movable stops with the punched pressure plate is pushed out by a defined amount and thereby assumes the register-oriented position. The fastening device is associated with a position sensor, which cooperates with the front edge of the printing plate outside the range of U-shaped punched outs. The position sensor is arranged such that in the open detection range of the fastening device generates a signal with its U-shaped punched to the stops pressure plate.
Durch den oder die Lagegeber ist ein Signal generierbar, welchem entnehmbar ist, daß die Druckplatte tief genug in den Erfassungsbereich der Befestigungsvorrichtung eingeführt wurde und bei geschlossener Befestigungsvorrichtung, also im geklemmten Zustand, garantiert die registergerechte Lage einnimmt. Die Anordnung des Lagegebers, bezogen auf die Tiefe der U-förmigen Ausstanzungen sowie den Hub der Anschläge beim Schließen der Befestigungsvorrichtung, sind entspechend aufeinander abgestimmt. Dadurch ist es nicht erforderlich, an der Druckplatte zusätzliche Stanzungen vorzusehen, die einen Bezug zu dem auf der Druckplatte befindlichen Sujet aufweist.By the one or more position sensors, a signal can be generated, which can be removed that the pressure plate has been inserted deep enough into the detection range of the fastening device and guaranteed closed registering device, ie in the clamped state, assumes the register-correct position. The arrangement of the position sensor, based on the depth of the U-shaped punched-out as well as the stroke of the stops when closing the fastening device are matched accordingly. As a result, it is not necessary to provide additional punches on the printing plate which has a relation to the subject located on the printing plate.
Gemäß einer einfachen Ausführungsform der Erfindung ist vorgesehen, daß der oder die Lagegeber als elektrisch abfragbare Kontaktstifte ausgebildet sind, mit der die Vorderkante der Druckplatte außerhalb des Bereiches der U-förmigen Ausstanzungen zusammenwirkt. Der Vorteil ist hierbei, daß diese elektrisch abfragbaren Kontaktstifte große Kontaktflächen aufweisen können, so daß eine leicht gewellte oder geringfügig beschädigte Druckplatte garantiert einen elektrischen Kontakt und so das entsprechende Signal generiert. Ist der beim Schließen der Befestigungsvorrichtung auszuführende Hub der mit den Ausstanzungen zusammenwirkenden Anschläge groß genug gewählt, so sind auch größere Toleranzen hinsichtlich Plattenvorderkante und Tiefe der Ausstanzungen unwirksam.According to a simple embodiment of the invention it is provided that the one or more position sensors are designed as electrically interrogatable contact pins with which the front edge of the pressure plate cooperates outside of the range of U-shaped punched out. The advantage here is that these electrically interrogatable contact pins can have large contact surfaces, so that a slightly corrugated or slightly damaged pressure plate guarantees electrical contact and thus generates the corresponding signal. If the stroke to be performed during closing of the fastening device of the stops interacting with the punched-out portions is chosen to be large enough, then larger tolerances with regard to the plate leading edge and the depth of the punched-out holes are also ineffective.
Anstelle von elektrisch abfragbaren Kontaktstiften können auch nach einem anderen Wirkprinzip arbeitende Lagegeber verwendet werden. Selbstverständlich ist es auch möglich, federnde Taststifte zu verwenden, welche ihrerseits einen elektrischen Kontakt betätigen. Derartige Lagegeber ermöglichen dann auch die Verwendung von elektrisch nichtleitenden Druckplatten.Instead of electrically interrogatable pins can also be used according to another principle operating position sensor. Of course, it is also possible to use resilient Taststifte, which in turn actuate an electrical contact. Such position sensors then also enable the use of electrically non-conductive printing plates.
Anstelle der die Druckplattenvorderkante außerhalb des Bereichs der Ausstanzungen kontaktierenden Lagegeber ist auch die Verwendung von berührungslos mit der Druckplattenvorderkante zusammenwirkenden Lagegebem möglich.Instead of the printing plate leading edge outside the area of the punched-contacting position sensor and the use of non-contact with the printing plate leading edge cooperating Lagegebem is possible.
Verwendbar sind auch berührungslos wirkende Abstandssensoren, mit denen sich das Vorhandensein der Druckplattenvorderkante innerhalb eines vorgegebenen Bereichs in der Befestigungsvorrichtung feststellen läßt. Auch hier ist letztlich wesentlich, daß dieser Bereich letztlich so auf den Hub der Anschläge abgestimmt ist, daß die Druckplatte bei geschlossener Befestigungsvorrichtung (also nach Ausführen des Hubes) die registergerechte Position einnimmt.It is also possible to use non-contact distance sensors with which the presence of the printing plate front edge can be detected within a predetermined range in the fastening device. Again, it is ultimately essential that this area is ultimately tuned to the stroke of the attacks, that the pressure plate with the fastening device closed (ie after execution of the stroke) assumes the register-correct position.
Die den Lagegebem nachgeschaltete Auswerteeinheit kann gemäß einer bevorzugten Ausführungsform der Erfindung dazu ausgebildet sein, sowohl die Anlage der Druckplattenvorderkante als auch den Signalwechsel "Druckplatte liegt an - Druckplatte liegt nicht mehr an" auszuwerten. Durch das Signal Druckplatte liegt an" ist so das Schließen der Befestigungsvorrichtung für die Druckplattenvorderkante auslösbar. Dies kann durch den Bediener erfolgen, dem die Druckplattenanlage durch ein entsprechendes Anzeigemittel signalisiert wird. Die Auswerteeinheit kann auch mit der Maschinensteuerung in Wirkverbindung stehen, die ihrerseits Signale an fernbetätigbare Einrichtungen zum Schließen der Befestigungsvorrichtung generiert.According to a preferred embodiment of the invention, the evaluation unit downstream of the position sensor can be designed to evaluate both the contact of the printing plate leading edge and the signal change "pressure plate is located - pressure plate is no longer located". This can be done by the operator to whom the printing plate system is signaled by a corresponding display means. "The evaluation unit can also be in operative connection with the machine control, which in turn signals remotely operated devices for closing the fastening device generated.
Letztlich ist der Signalwechsel "Druckplatte liegt an - Druckplatte liegt nicht an" beim Schließen der Befestigungsvorrichtung (Anschläge führen Hub aus) das die registergerechte Anlage wiedergebende Signal. Liegt die Druckplatte bei geöffneter Befestigungsvorrichtung an den Lagegebem an und wird sie beim Schlie0en durch die den Hub ausführenden Anschläge von diesen abgehoben (Signalwechsel), nimmt die Druckplatte bei geschlossener Befestigungsvorrichtung die registergerechte Position ein.Ultimately, the signal change "Pressure plate is on - pressure plate is not on" when closing the fastening device (stops perform stroke) the signal reproducing the register-compliant system. If the pressure plate is located on the positioner when the fastening device is open, and if it is lifted off by the strokes that execute the stroke (signal change), the pressure plate assumes the register-correct position when the fastening device is closed.
Gemäß einer Ausführungsform der Erfindung sind die den Hub während des Schließens der Befestigungsvorrichtung ausführenden Anschläge über ein paar Blattfedern mit dem zylinderfesten Teil der Befestigungsvorrichtung verbunden. Die Blattfedern sind derartig vorgespannt, so daß das mit der U-förmigen Ausstanzung zusammenwirkende Anschlagelement beim Schließen wie über eine Parallelogramm-Aufhängung entgegen der Zuführrichtung für die Druckplatte bewegt wird. Durch die Länge der Blattfederelemente sowie die Geometrie der Anordnung läßt sich der Hub des Anschlages beim Schließen der Befestigungsvorrichtung wählen. Die Aufhängung des derartig über Blattfedern gelagerten Anschlages kann insgesamt noch über ein Justiermittel verstellbar sein.According to one embodiment of the invention, the stops which perform the stroke during the closing of the fastening device are connected to the cylinder-fixed part of the fastening device via a few leaf springs. The leaf springs are biased so that the cooperating with the U-shaped punch stop element is moved when closing as opposed to a parallelogram suspension against the feed direction for the printing plate. Due to the length of the leaf spring elements and the geometry of the arrangement, the stroke of the stop when closing the fastening device can be choose. The suspension of the so mounted on leaf springs stop can be adjusted in total still an adjustment.
Des weiteren erfolgt die Erläuterung eines Ausführungsbeispiels der Erfindung anhand der Zeichnungen. Es zeigt:
- Fig. 1
- Die Anordnung der Anschläge sowie der Lagegeber im Plattenzylinder in einer Ansicht von oben,
- Fig. 2 und 3
- die Funktionsweise der erfindungsgemäßen Vorrichtung, und
- Fig. 4 und 5
- die bewegbaren Anschläge im Detail.
- Fig. 1
- The arrangement of the stops and the position sensor in the plate cylinder in a view from above,
- FIGS. 2 and 3
- the operation of the device according to the invention, and
- 4 and 5
- the movable stops in detail.
Fig. 1 zeigt prinzipiell einen Plattenzylinder 2 mit einer darin angeordneten und die Vorderkante der Druckplatte 1 erfassenden Befestigungsvorrichtung 3. Die Befestigungsvorrichtung 3 ist als eine an sich bekannte Klemmschiene ausgebildete und bedarf an dieser Stelle keiner weiteren Erläuterung.Fig. 1 shows in principle a
An der Vorderkante der Druckplatte 1 sind zwei U-förmige Ausstanzungen 6,7 angebracht, mit denen die in der Befestigungsvorrichtung 3 angeordneten Anschläge 4, 5 (Registerpins) zusammenwirken. Weiterhin sind in der Befestigungsvorrichtung 3 zwei die Außenbereiche der Druckplattenvorderkante tastende Lagegeber 8, 9 angeordnet. Durch die Lagegeber 8, 9 ist das Vorhandensein der Vorderkante der Druckplatte 1 in der Befestigungsvorrichtung 3 feststellbar. Die Lagegeber 8, 9 können insbesondere als elektrisch isoliert angebrachte Kontakte ausgebildet sein. Die Signale der Lagegeber 8, 9 werden einer Auswerteeinheit 10 zugeführt, durch welche die Anlage der Druckplatte 1 anzeigbar und/oder das Schließen der Befestigungsvorrichtung 3 für Druckplatte 1 auslösbar ist.At the front edge of the
Fig. 2 und 3 zeigt die Funktionsweise der erfindungsgemäßen Einrichtung. Gemäß der Darstellung in Fig. 2 ist die Druckplatte 1 in die Befestigungsvorrichtung 3 eingeführt, so daß die Vorderkante der Druckplatte 1 mit den Lagegebern 8, 9 Kontakt bekommt. Dadurch geben die Lagegeber 8, 9 Signale an die Auswerteeinheit 10 ab, durch welche an einer Anzeigevorrichtung signalisierbar ist, daß die Druckplatte 1 anliegt und die Befestigungsvorrichtung 3 geschlossen werden kann. Die Anordnung der Lagegeber 8, 9 bezüglich der Anschläge 4, 5 ist dergestalt, so daß - wie in Fig. 2 angedeutet - die Konturen der Ausstanzungen 6,7 noch jeweils einen Abstand a, b zu den Anschlägen 4, 5 aufweisen.Fig. 2 and 3 shows the operation of the device according to the invention. As shown in Fig. 2, the
Nachdem die Vorderkante der Druckplatte 1 die Lagegeber 8, 9 kontaktiert hat und entsprechende Signale in der Auswerteeinheit 10 gebildet wurden, erfolgt das Schließen der Befestigungsvorrichtung 3. Durch die noch anhand der Figuren 4 und 5 näher erläuterte Lagerung der Anschläge 4, 5 in der Befestigungsvorrichtung 3 werden diese beim Schließen der Befestigungsvorrichtung 3 der Druckplatte 1 entgegen verschoben. Dadurch wird die Vorderkante der Druckplatte 1 von den Lagegebern 8, 9 abgehoben, so daß sich dort die Abstände c, d einstellen. Fig. 3 zeigt die registergerechte Lage der Druckplatte 1, also diejenige Position, in welcher die Druckplatte 1 durch die Befestigungsvorrichtung 3 auf den Plattenzylinder 1 fixiert wird.After the leading edge of the
Gemäß den Schnittdarstellungen der Fig.4 und 5 besteht die Befestigungsvorrichtung 3 aus einem zylinderfest angeordneten und als Schiene ausgebildeten Oberteil 11 sowie einem ebenfalls als Schiene ausgebildeten, radial beweglichen Unterteil 12. Zwischen dem Unterteil 12 und dem Oberteil 11 ergibt sich so ein als Spalt ausgebildeter Erfassungsbereich für die in den Fig. 4 und 5 nicht dargestellte Druckplatte 1.According to the sectional views of Figures 4 and 5, the
Die Anschläge 4, 5 sind jeweils über ein Paar vorgespannte Blattfedern 13, 14 mittels einem Block 15 am zylinderfesten Oberteil 11 angebracht. Zur Aufnahme der über die Blattfedern 13, 14 und den Block 15 getragenen Anschläge 4, 5 weist die Schiene des Oberteils 11 in diesem Bereich eine Ausnehmung auf. Der mit der Schiene des Oberteil 11 verschraubte Bock 15 ist ferner über ein als Madenschraube ausgebildetes Justiermittel 16 verstellbar.The
Die die Anschläge 4,5 tragenden Blattfedern 13, 14 weisen eine derartige Vorspannung auf, so daß bei zum Zuführen einer Druckplatte 1 in die geöffnete Befestigungsvorrichtung 3 (Fig. 4) der Anschlag 4, 5 auf der Oberseite der Schiene des Unterteils 12 aufliegt. Durch Schließen der Befestigungsvorrichtung 3 (Schiene Unterteil 12) wird der Anschlag 4, 5 entgegen der Vorspannung der Blattfedern 13,14 heraufgedrückt und führt somit einen definierten Hub h aus (Fig. 5), wobei bei geschlossener Befestigungsvorrichtung 3 der Anschlag 4, 5 die registergerechte Position für die Druckplatte 1 definiert.The stops 4.5 supporting
- 11
- Druckplatteprinting plate
- 22
- Plattenzylinderplate cylinder
- 33
- Befestigungsvorrichtungfastening device
- 44
- Anschlag (Registerstift)Stop (register pin)
- 55
- Anschlag (Registerstift)Stop (register pin)
- 66
- Ausstanzung (U-förmig)Punched out (U-shaped)
- 77
- Ausstanzung (U-förmig)Punched out (U-shaped)
- 88th
- Lagegeber (Anschlag elektrisch abfragbar)Position sensor (stop electrically interrogated)
- 99
- Lagegeber (Anschlag elektrisch abfragbar)Position sensor (stop electrically interrogated)
- 1010
- Auswerteeinheitevaluation
- 1111
- Oberteil (Befestigungsvorrichtung 3)Upper part (fastening device 3)
- 1212
- Unterteil (Befestigungsvorrichtung 3)Lower part (fastening device 3)
- 1313
- Blattfederleaf spring
- 1414
- Blattfederleaf spring
- 1515
- Blockblock
- 1616
- Justiermitteladjusting
- a, ba, b
-
Abstand Anschläge 4, 5- Grund Ausstanzung 6, 7)Distance stops 4, 5-
basic punching 6, 7) - c, dc, d
-
Abstand (Lagegeber 8, 9 - Vorderkante Druckplatte 1)Distance (
position sensor 8, 9 - front edge of printing plate 1) - hH
- Hub (Anschlag 4, 5)Stroke (stop 4, 5)
Claims (7)
- Device for controlling the position of printing plates on the plate cylinder of printing presses, in particular sheet-fed offset presses, having a fastening apparatus for that edge of the printing plate which is assigned to the start of the print, the printing plate having a stamped-out portion on this edge, which stamped-out portion interacts with a stop in the fastening apparatus and with a position transmitter which senses the position of the printing plate, characterized in that, when the fastening apparatus (3) is closed, the stop (4, 5) performs a stroke (h) counter to the feed direction of the printing plate (1), by means of which stroke (h) the printing plate (1) can be displaced into the in-register position, and in that the position transmitter (8, 9) is configured as a transmitter which senses the position of the printing plate outside the stamped-out portion and as a transmitter which signals the presence of the leading edge of the printing plate (1) in a predefined region within the fastening apparatus (3).
- Device according to Claim 1, characterized in that, when the fastening apparatus (3) is closed, the contact of the printing plate (1) with the position transmitter (8, 9) is cancelled by the stroke of the stop (4, 5).
- Device according to Claim 1 or 2, characterized in that two position transmitters (8, 9) are provided in the case of two stops (4, 5) which are arranged in an axially spaced-apart manner.
- Device according to Claim 1, 2 or 3, characterized in that the position transmitters (8, 9) are configured as contacts which can be closed electrically by the printing plate (1).
- Device according to one of the preceding claims, characterized in that the stops (4, 5) which interact with the stamped-out portions (6, 7) are attached by means of prestressed leaf springs (13, 14) in the fastening apparatus (3).
- Device according to Claim 5, characterized in that the leaf springs (13, 14) are attached to the fastening apparatus (3) via a block (15).
- Device according to one of the preceding claims, characterized in that the leaf springs (13, 14) can be adjusted via an associated adjusting means (16).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29907123U | 1999-04-22 | ||
| DE29907123U DE29907123U1 (en) | 1999-04-22 | 1999-04-22 | Device for checking the position of printing plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1046503A1 EP1046503A1 (en) | 2000-10-25 |
| EP1046503B1 true EP1046503B1 (en) | 2006-10-04 |
Family
ID=8072538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00107762A Expired - Lifetime EP1046503B1 (en) | 1999-04-22 | 2000-04-11 | Device for controlling the position of printing plates |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1046503B1 (en) |
| JP (1) | JP3370644B2 (en) |
| AT (1) | ATE341451T1 (en) |
| DE (2) | DE29907123U1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10015727A1 (en) * | 2000-03-29 | 2001-10-04 | Koenig & Bauer Ag | Abrasive, conductive, locating dowels for electrical checking of printing plate alignment on platen press engage with locating holes in plate to assure correct lateral and peripheral register |
| DE102005061912A1 (en) * | 2005-12-23 | 2007-07-05 | Koenig & Bauer Aktiengesellschaft | Detection device for position of printing plate has detector with two detector elements, each with detection field integrated in resting surface |
| JP7240237B2 (en) * | 2019-04-18 | 2023-03-15 | リョービＭｈｉグラフィックテクノロジー株式会社 | Printer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD116426A1 (en) * | 1974-11-06 | 1975-11-20 | ||
| JP2573523Y2 (en) * | 1992-07-31 | 1998-06-04 | 株式会社小森コーポレーション | Plate mounting device for printing press |
-
1999
- 1999-04-22 DE DE29907123U patent/DE29907123U1/en not_active Expired - Lifetime
-
2000
- 2000-04-11 EP EP00107762A patent/EP1046503B1/en not_active Expired - Lifetime
- 2000-04-11 DE DE50013534T patent/DE50013534D1/en not_active Expired - Lifetime
- 2000-04-11 AT AT00107762T patent/ATE341451T1/en not_active IP Right Cessation
- 2000-04-20 JP JP2000120022A patent/JP3370644B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000318133A (en) | 2000-11-21 |
| DE29907123U1 (en) | 1999-07-01 |
| EP1046503A1 (en) | 2000-10-25 |
| JP3370644B2 (en) | 2003-01-27 |
| DE50013534D1 (en) | 2006-11-16 |
| ATE341451T1 (en) | 2006-10-15 |
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