EP0570702B1 - Device for feeding printing plates to the plate cylinder of a printing machine, in particular offset sheet-fed printing machine - Google Patents
Device for feeding printing plates to the plate cylinder of a printing machine, in particular offset sheet-fed printing machine Download PDFInfo
- Publication number
- EP0570702B1 EP0570702B1 EP93106206A EP93106206A EP0570702B1 EP 0570702 B1 EP0570702 B1 EP 0570702B1 EP 93106206 A EP93106206 A EP 93106206A EP 93106206 A EP93106206 A EP 93106206A EP 0570702 B1 EP0570702 B1 EP 0570702B1
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- EP
- European Patent Office
- Prior art keywords
- printing
- plate cylinder
- rail
- plate
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007639 printing Methods 0.000 title claims abstract description 90
- 239000002184 metal Substances 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 28
- 230000037431 insertion Effects 0.000 abstract description 28
- 238000001514 detection method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 1
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 1
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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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
- B41F27/1206—Feeding to or removing from the forme cylinder
Definitions
- the invention relates to a device for feeding printing plates to the plate cylinder of printing machines according to the preamble of claim 1.
- a printing plate is attached to the plate cylinder by means of tensioning rails arranged in a cylinder channel and assigned to the printing start and the printing end, whereby the printing start area of the printing plate is first inserted (clamped) into the detection area of a correspondingly designed tensioning rail and then the printing end in the corresponding second tensioning rail also clamped and then tensioned using force.
- tensioning rails arranged in a cylinder channel and assigned to the printing start and the printing end, whereby the printing start area of the printing plate is first inserted (clamped) into the detection area of a correspondingly designed tensioning rail and then the printing end in the corresponding second tensioning rail also clamped and then tensioned using force.
- the introduction of the printing start area of the printing plate into the corresponding printing start tensioning rail is very laborious and time-consuming, since the corresponding edge of the printing plate has to be inserted over the entire width into a sometimes very narrow slot in the detection area. A brightness of the printing start edge of the printing plate exacerbates this fact.
- the pressure plate must also be held or supported during the pulling-up process of the printing plate, i.e. when the plate cylinder runs slowly forward and when removing an old printing plate (backwards running of the plate cylinder), so that the printing side does not rest on any machine parts and may be damaged.
- DE 3 940 795 C2 From DE 3 940 795 C2, DE 3 940 796 C2 and EP 0 431 575 A2 systems for automatic printing plate change are known, in which the removal of an old printing plate and the feeding of a new printing plate from or to the plate cylinder takes place automatically. In addition to storage and receiving areas for the printing plates, these systems also have transport devices for feeding and removing the printing plates. However, these systems are very extensive in terms of structural engineering and are therefore very cost-intensive.
- the object of the present invention is therefore to expand a device according to the preamble of claim 1 in such a way that the insertion of the pressure plate leading edge into the corresponding pressure start tensioning rail can be simplified with the least constructional effort.
- the plate cylinder of the printing press is associated with an insertion rail which is mounted on and off the outer circumference and extends over the format width of the plate cylinder.
- the plate cylinder is moved into a position in which the insertion rail according to the invention can be adjusted to the area of the fold at the beginning of the printing of the plate cylinder and thus forms a funnel-shaped area with a surface that extends over its entire length and with the corresponding outer circumference of the plate cylinder the detection area of the open pressure start clamping rail of the plate cylinder opens.
- the newly to be fed printing plate thus only needs to be inserted into this insertion area and is virtually automatically inserted into the open pressure start clamping rail through the surface of the insertion rail on the one hand and the outer circumference of the plate cylinder on the other hand.
- the pressure start clamping rail can then be actuated by appropriate motors, for example located in the cylinder pit, i.e. the detection area can be closed for clamping.
- the insertion rail is arranged pivotably about an axis which is located on the protection from the printing unit cylinders and in particular at the level of the plate cylinder of this printing unit.
- the insertion rail is advantageously formed as the lower, pivotable end of a sheet profile which is approximately arched in profile and also extends over the format width of the plate cylinder, the pivot axis of which is located on the protection from the printing unit cylinder.
- brushes can be arranged for gentle guidance of the printing plate, by means of which the printing plate is supported with its printing side on the sheet profile.
- the pivoting of the insertion rail or the sheet metal profile can be effected, for example, by two pneumatic cylinders, which are preferably located on each side frame wall of the printing press and whose piston rods act on, for example, lever arms mounted on the frame for pivoting on the sheet metal profile.
- Fig. 1 shows a section of the part of a printing unit of a printing press in series. Between the two side frame walls of this printing unit, a plate cylinder 1 is mounted, which has a tensioning rail 3, 4 assigned to the beginning of the printing DA and the end of the printing DE in a cylinder pit 2. Above the plate cylinder 1 are the rollers of an inking unit, of which two inking rollers are indicated in FIG. 1. As is known, these are switched off before changing the printing plates.
- a protection 6 is slidably arranged over a guide rail attached to a side frame wall of the printing unit, which is in a basic position according to FIG. 1 during printing operation.
- a protection 6 For access to the printing unit cylinders, especially to change the rubber blanket, can be pushed up, as indicated by the arrow.
- the protection 6 extends across the width of the printing unit.
- a pivot axis 7, on which a sheet metal profile 8 is suspended, is preferably attached to an upper part of the protection 6 as a swivel joint.
- the sheet profile 8 has a slight curvature and has the format width of the plate cylinder 1.
- an insertion rail 9 is attached, which can be pivoted to or from the outer circumference of the plate cylinder 1 by pivoting the sheet profile 8 (Arrow). In the embodiment shown in FIG. 1, the insertion rail 9 has been created by appropriate profiling of the pivotable end of the sheet metal profile 8.
- a guide plate 11 is attached to the upper crossmember 10 of the protection 6 and is drawn down almost to the upper edge of the plate profile 8, that is to say approximately to the height of the pivot axis 7.
- a guide plate 12 is also attached to the guard 6, which has two bent legs.
- the guide plates 11 and 12 extend across the width of the guard 6 or across the format width of the plate cylinder 1 and form a gap for the passage of a printing plate.
- a side stop which is slidably mounted according to the format of the printing plate can also be provided here.
- Fig. 2 shows the sheet profile 8 with the insertion rail 9 thereon in format width.
- brushes 13 are arranged at a distance from one another in a plurality of strips, the bristles of which support the printing plate with its printing side.
- Brushes 14 are also attached to the guide plate 11 of the crossmember 10 for gentle support of the pressure plate.
- other devices can also be provided for scratch-free and wear-free support of the pressure plate.
- the insertion rail 9 at the pivotable end of the sheet metal profile 8 has the profile shown in FIG. 1 and has an insertion surface 15 facing the plate cylinder 1, which lies approximately at the height of the bristles of the brushes 13.
- the sheet profile 8 is pivoted to the plate cylinder 1, as shown in FIG. 1, for which purpose it is rotated beforehand into the corresponding position.
- the insertion rail 9 has a stop 16 in its extension on both sides (FIG. 2) with which it is supported on both bearer rings or measuring rings of the plate cylinder 1.
- the stops 16 are designed to space the insertion rail 9 in relation to the start of pressure DA of the plate cylinder 1 such that the insertion surface 15 lies at the same level as the open detection area 17 of the tensioning rail 3.
- the stops 16 have, for example, polyamide blocks for gentle support on the bearer rings and can also be adjustable.
- a new pressure plate to be fed can be inserted directly into the tensioning rail 3 at the top of the guard 6 between the guide plate 11 and the opposite guide plate 12 and supported by the brushes 13 on the plate profile 8.
- the insertion surface 15 of the insertion rail 9, on the one hand, and the outer circumference of the plate cylinder 1 in the area of the printing start DA, on the other hand, represent a funnel which extends over the format width of the plate cylinder 1 and causes the front edge of the printing plate to directly enter the gap-shaped detection area 17 can be introduced.
- the sheet metal profile 8 can be pivoted down again with the insertion rail 9.
- the plate cylinder 1 is now set in a slow forward rotation by appropriate control of the main drive of the printing press, wherein the pressure plate extends around the outer circumference of the plate cylinder 1.
- a pressure roller 18 is provided on and off the plate cylinder 1, by means of which the pressure plate is pressed against the outer circumference of the plate cylinder during the pulling-on process.
- the pressure roller 18 extends over the entire width of the format and can be turned on and off, for example, by means of two bearing levers (one on each side frame wall of the printing press) and one pneumatic cylinder each. As is known from the prior art, such a pressure roller 18 is also able to insert the trailing end of the printing plate into a correspondingly designed tensioning rail 4 of the printing end. This is then closed via remote-controlled devices in the plate cylinder.
- a pneumatic cylinder 19 is attached to both side frame walls of the printing press, which causes the corresponding pivoting of the sheet-metal profile 8 by means of an angle lever 20 which is fixed to the frame and an entraining pin (not shown) attached thereto .
- the pneumatic cylinder 19 can also be mounted directly in the protection 6 and articulated directly on the sheet profile 8.
- the device according to the invention is suitable not only for feeding a new printing plate to the plate cylinder 1 but also for removing a printing plate located on the plate cylinder 1. Since the sheet profile 8 with the insertion rail 9 in the rest position, that is to say in the non-pivoted state, assumes the position indicated by dashed lines in FIG. 1 (for example, by a stop), a pressure plate can turn over when the plate cylinder 1 rotates backwards, the tensioning rail 4 is opened and the pressure roller 18 is engaged the brushes 13 of the sheet profile 8 are supported in a supporting manner between the guide sheets 11 and 12 on the protection 6.
Landscapes
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Rotary Presses (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Zuführen von Druckplatten auf den Plattenzylinder von Druckmaschinen gemäß dem Oberbegriff von Anspruch 1.The invention relates to a device for feeding printing plates to the plate cylinder of printing machines according to the preamble of
Bei Bogenoffsetdruckmaschinen wird eine Druckplatte auf dem Plattenzylinder mittels in einem Zylinderkanal angeordneter und jeweils dem Druckanfang und dem Druckende zugeordneter Spannschienen befestigt, wobei zunächst der Druckanfangbereich der Druckplatte in den Erfassungsbereich einer entsprechend ausgebildeten Spannschiene eingelegt (geklemmt) und sodann das Druckende in der entsprechend zweiten Spannschiene ebenfalls geklemmt und sodann unter Kraftaufwendung gespannt wird. Gerade bei großformatigen Druckplatten gestaltet sich das Einführen des Druckanfangbereiches der Druckplatte in die entsprechende Druckanfang-Spannschiene sehr mühsam und zeitaufwendig, da die entsprechende Kante der Druckplatte über die gesamte Breite in einen zum Teil sehr engen Schlitz des Erfassungsbereiches eingeführt werden muß. Eine Helligkeit der Druckanfang-Kante der Druckplatte verschlimmert diesen Umstand noch. Auch während des Aufziehvorgangs der Druckplatte, also beim langsamen Vorwärtslauf des Plattenzylinders sowie beim Abziehen einer alten Druckplatte (Rückwärtslauf des Plattenzylinders) muß die Druckplatte gehalten bzw. unterstützt werden, um nicht mit ihrer druckenden Seite an irgendwelchen Maschinenteilen aufzuliegen und unter Umständen beschädigt zu werden.In sheetfed offset printing machines, a printing plate is attached to the plate cylinder by means of tensioning rails arranged in a cylinder channel and assigned to the printing start and the printing end, whereby the printing start area of the printing plate is first inserted (clamped) into the detection area of a correspondingly designed tensioning rail and then the printing end in the corresponding second tensioning rail also clamped and then tensioned using force. Especially in the case of large-format printing plates, the introduction of the printing start area of the printing plate into the corresponding printing start tensioning rail is very laborious and time-consuming, since the corresponding edge of the printing plate has to be inserted over the entire width into a sometimes very narrow slot in the detection area. A brightness of the printing start edge of the printing plate exacerbates this fact. The pressure plate must also be held or supported during the pulling-up process of the printing plate, i.e. when the plate cylinder runs slowly forward and when removing an old printing plate (backwards running of the plate cylinder), so that the printing side does not rest on any machine parts and may be damaged.
Aus der DE 3 940 795 C2, der DE 3 940 796 C2 sowie der EP 0 431 575 A2 sind Systeme zum automatischen Druckplattenwechsel bekannt, bei welchen das Abziehen einer alten Druckplatte sowie das Zuführen einer neuen Druckplatte von bzw. zum Plattenzylinder selbsttätig abläuft. Diese Systeme weisen neben Speicher- und Aufnahmebereichen für die Druckplatten auch Transporteinrichtungen zum Zu- bzw. Abfördern der Druckplatten auf. Diese Systeme sind aber im bautechnischen Aufwand sehr umfangreich und gestalten sich deswegen sehr kostenintensiv.From DE 3 940 795 C2, DE 3 940 796 C2 and EP 0 431 575 A2 systems for automatic printing plate change are known, in which the removal of an old printing plate and the feeding of a new printing plate from or to the plate cylinder takes place automatically. In addition to storage and receiving areas for the printing plates, these systems also have transport devices for feeding and removing the printing plates. However, these systems are very extensive in terms of structural engineering and are therefore very cost-intensive.
Aus "Der Polygraph" 2/92, Seite 6, sowie der JP-A 63-191636 sind halbautomatische Druckplattenwechselsysteme bekannt, bei denen der Plattenzylinder Einrichtungen aufweist, um den Druckanfang und das Druckende der Druckplatte zu klemmen und sodann zu spannen. Ferner sind Vorrichtungen vorgesehen, durch welche die Druckplatte mit einem reduzierten Handhabungsaufwand auf dem Plattenzylinder aufgezogen werden kann. Die aus der zuletzt genannten Schrift bekannte Vorrichtung sieht hier insbesondere eine verschwenkbar gelagerte und an den Außenumfang des Plattenzylinders anstellbare Andrückrolle vor, durch welche insbesondere das Druckende der Druckplatte in eine entsprechend gestaltete Druckende-Spannschiene eingeführt wird. Eine Einrichtung zur wesentlichen Vereinfachung des Vorganges beim Einführen der Vorderkante der Druckplatte in die entsprechende Spannschiene ist jedoch nicht erkennbar. Ein halbautomatisches Druckplattenwechselsystem, bei der eine neue Druckplatte aus einer am hochschwenkbaren Schutz vor den Druckwerkszylindern befindlichen Position dem Plattenzylinder zugeführt wird ist ebenfalls aus der JP-A 59-22755 bekannt.From "The Polygraph" 2/92,
Aufgabe der vorliegenden Erfindung ist es somit, eine Vorrichtung gemäß dem Oberbegriff von Anspruch 1 derartig zu erweitern, so daß bei geringstem bautechnischen Aufwand gerade das Einführen der Druckplattenvorderkante in die entsprechende Druckanfang-Spannschiene vereinfacht werden kann.The object of the present invention is therefore to expand a device according to the preamble of
Gelöst wird diese Aufgabe durch Anwendung der kennzeichnenden Merkmale von Anspruch 1. Eine bevorzugte Ausführungsform der Erfindung ergibt sich dabei aus den Unteransprüchen.This object is achieved by applying the characterizing features of
Nach der Erfindung ist vorgesehen, daß dem Plattenzylinder der Druckmaschine eine an dessen Außenumfang an- und abstellbar gelagerte, über die Formatbreite des Plattenzylinders sich erstreckende Einführschiene zugeordnet ist. Der Plattenzylinder wird dabei in eine Stellung verfahren, bei welcher die erfindungsgemäße Einführschiene an den Bereich der Abkantung des Druckanfanges des Plattenzylinders anstellbar ist und somit mit einer über ihre gesamte Länge reichenden Fläche und mit dem entsprechenden Außenumfang des Plattenzylinders einen trichterförmigen Bereich bildet, der genau in den Erfassungsbereich der geöffneten Druckanfang-Spannschiene des Plattenzylinders mündet. Die neu zuzuführende Druckplatte braucht somit lediglich in diesen Einführbereich eingeschoben werden und wird quasi selbsttätig durch die Fläche der Einführschiene einerseits sowie den Außenumfang des Plattenzylinders andererseits in die geöffnete Druckanfang-Spannschiene eingeführt. Die Druckanfang-Spannschiene kann dann durch entsprechende, beispielsweise in der Zylindergrube befindliche Motore betätigt, d.h. der Erfassungsbereich zum Klemmen geschlossen werden.According to the invention it is provided that the plate cylinder of the printing press is associated with an insertion rail which is mounted on and off the outer circumference and extends over the format width of the plate cylinder. The plate cylinder is moved into a position in which the insertion rail according to the invention can be adjusted to the area of the fold at the beginning of the printing of the plate cylinder and thus forms a funnel-shaped area with a surface that extends over its entire length and with the corresponding outer circumference of the plate cylinder the detection area of the open pressure start clamping rail of the plate cylinder opens. The newly to be fed printing plate thus only needs to be inserted into this insertion area and is virtually automatically inserted into the open pressure start clamping rail through the surface of the insertion rail on the one hand and the outer circumference of the plate cylinder on the other hand. The pressure start clamping rail can then be actuated by appropriate motors, for example located in the cylinder pit, i.e. the detection area can be closed for clamping.
Nach der Erfindung kann insbesondere vorgesehen sein, daß die Einführschiene schwenkbar um eine Achse angeordnet ist, die sich am Schutz vor den Druckwerkszylindern und insbesondere in Höhe des Plattenzylinders dieses Druckwerkes befindet. Die Einführschiene ist dabei in vorteilhafter Weise als das untere, schwenkbare Ende eines in etwa bogenförmig profilierten und ebenfalls über die Formatbreite des Plattenzylinders reichenden Blechprofiles gebildet, dessen Schwenkachse sich an dem Schutz vor dem Druckwerkszylinder befindet. An der konkaven Seite des Blechprofils können zur schonenden Führung der Druckplatte Bürsten angeordnet seien, durch welche die Druckplatte sich mit ihrer druckenden Seite an dem Blechprofil abstützt.According to the invention it can in particular be provided that the insertion rail is arranged pivotably about an axis which is located on the protection from the printing unit cylinders and in particular at the level of the plate cylinder of this printing unit. The insertion rail is advantageously formed as the lower, pivotable end of a sheet profile which is approximately arched in profile and also extends over the format width of the plate cylinder, the pivot axis of which is located on the protection from the printing unit cylinder. On the concave side of the sheet profile, brushes can be arranged for gentle guidance of the printing plate, by means of which the printing plate is supported with its printing side on the sheet profile.
Das An- und Abschwenken der Einführschiene bzw. des Blechprofils kann beispielsweise durch zwei Pneumatikzylinder bewirkt werden, die sich vorzugsweise an je einer Seitengestellwand der Druckmaschine befinden und deren Kolbenstangen über beispielsweise gestellfest gelagerte Hebel arme zum Verschwenken auf das Blechprofil einwirken.The pivoting of the insertion rail or the sheet metal profile can be effected, for example, by two pneumatic cylinders, which are preferably located on each side frame wall of the printing press and whose piston rods act on, for example, lever arms mounted on the frame for pivoting on the sheet metal profile.
Desweiteren erfolgt die Erläuterung eines Ausführungsbeispieles der Erfindung anhand der Zeichnungen.Furthermore, an embodiment of the invention is explained with reference to the drawings.
Es zeigt:
- Fig. 1
- die erfindungsgemäße Vorrichtung im Schnitt an einem Druckwerk,
- Fig. 2
- eine Darstellung der erfindungsgemäßen Einführschiene nebst Blechprofil über die Formatbreite.
- Fig. 1
- the device according to the invention in section on a printing unit,
- Fig. 2
- a representation of the insertion rail according to the invention along with sheet profile over the format width.
Fig. 1 zeigt als Ausschnitt den Teil eines Druckwerkes einer Druckmaschine in Reihenbauweise. Zwischen den zwei Seitengestellwänden dieses Druckwerkes ist ein Plattenzylinder 1 gelagert, der in einer Zylindergrube 2 eine dem Druckanfang DA und dem Druckende DE zugeordnete Spannschiene 3, 4 aufweist. Oberhalb des Plattenzylinders 1 befinden sich die Walzen eines Farbwerkes, von dem in Fig. 1 zwei Farbauftragswalzen angedeutet sind. Vor einem Druckplattenwechsel werden diese bekanntlich abgestellt.Fig. 1 shows a section of the part of a printing unit of a printing press in series. Between the two side frame walls of this printing unit, a
Vor dem Druckwerk mit dem Plattenzylinder 1 und dem darunter angeordneten Gummituchzylinder 5 ist über je eine an einer Seitengestellwand des Druckwerkes angebrachte Führungsschiene ein Schutz 6 verschiebbar angeordnet, der sich gemäß Fig. 1 in einer Grundstellung während des Druckbetriebes befindet. Zur Zugänglichkeit zu den Druckwerkszylindern, insbesondere um das Gummituch zu wechseln, kann dieser, wie durch den Pfeil angedeutet, hochgeschoben werden. Der Schutz 6 erstreckt sich über die Breite des Druckwerkes.In front of the printing unit with the
An einem oberen Teil des Schutzes 6 ist als Drehgelenk vorzugsweise eine Schwenkachse 7 angebracht, an der ein Blechprofil 8 aufgehängt ist. Das Blechprofil 8 weist dabei eine leichte Krümmung auf und besitzt die Formatbreite des Plattenzylinders 1. An dem schwenkbaren Ende des Blechprofiles 8 ist eine Einführschiene 9 angebracht, die durch Verschwenken des Blechprofiles 8 an den Außenumfang des Plattenzylinders 1 an- bzw. von diesem abschwenkbar ist (Pfeil). In der dargestellten Ausführungsform gemäß Fig. 1 ist die Einführschiene 9 durch eine entsprechende Profilierung des schwenkbaren Endes des Blechprofiles 8 entstanden.A pivot axis 7, on which a
An der oberen Traverse 10 des Schutzes 6 ist ein Führungsblech 11 angebracht, welches fast bis zur Oberkante des Blechprofiles 8, also in etwa bis zur Höhe der Schwenkachse 7 heruntergezogen ist. Gegenüberliegend dem Führungsblech 11 ist ebenfalls am Schutz 6 ein Führungsblech 12 angebracht, welches zwei abgebogene Schenkel aufweist. Die Führungsbleche 11 und 12 erstrecken sich dabei über die Breite des Schutzes 6 bzw. über die Formatbreite des Plattenzylinders 1 und bilden einen Spalt zum Durchführen einer Druckplatte. Hier kann auch ein entsprechend dem Format der Druckplatte verschiebbar gelagerter Seitenanschlag vorgesehen sein.A
Fig. 2 zeigt das Blechprofil 8 mit der daran befindlichen Einführschiene 9 in Formatbreite. Auf der konkaven Innenseite des gekrümmten Blechprofiles 8 sind in mehreren Streifen voneinander beabstandet Bürsten 13 angeordnet, über deren Borsten sich die Druckplatte mit ihrer druckenden Seite abstützen kann. Am Führungsblech 11 der Traverse 10 sind ebenfalls zur schonenden Abstützung der Druckplatte Bürsten 14 angebracht. Anstelle der vorzugsweise verwendeten Bürsten 13, 14 können zur kratz- und verschleißfreien Abstützung der Druckplatte auch andere Einrichtungen vorgesehen sein.Fig. 2 shows the
Die Einführschiene 9 am schwenkbaren Ende des Blechprofiles 8 weist das in Fig. 1 dargestellte Profil auf und besitzt eine zum Plattenzylinder 1 weisende Einführfläche 15 auf, die etwa in der Höhe der Borsten der Bürsten 13 liegt.The
Zum Einführen einer neuen Druckplatte wird somit das Blechprofil 8, wie in Fig. 1 gezeigt, an den Plattenzylinder 1 angeschwenkt, wozu dieser vorher in die entsprechende Position verdreht wird. Die Einführschiene 9 weist in ihrer beidseitigen Verlängerung (Fig. 2) je einen Anschlag 16 auf, mit denen sie sich an beiden Schmitz- bzw. Meßringen des Plattenzylinders 1 abstützt. Die Anschläge 16 sind dabei zur Beabstandung der Einführschiene 9 gegenüber dem Druckanfang DA des Plattenzylinders 1 derartig ausgebildet, so daß die Einführfläche 15 auf einer Höhe mit dem geöffneten Erfassungsbereich 17 der Spannschiene 3 liegt. Die Anschläge 16 weisen zur schonenden Auflage an den Schmitzringen beispielsweise Polyamid-Klötzchen auf und können ebenfalls einstellbar sein.To insert a new printing plate, the
Eine neu zuzuführende Druckplatte kann an der Oberseite des Schutzes 6 zwischen dem Führungsblech 11 und dem gegenüberliegenden Führungsblech 12 hindurch und sich über die Bürsten 13 am Blechprofil 8 abstützend direkt in die Spannschiene 3 eingeführt werden. Wie in Fig. 1 erkennbar stellen die Einführfläche 15 der Einführschiene 9 einerseits und der Außenumfang des Plattenzylinders 1 im Bereich des Druckanfanges DA andererseits einen über die Formatbreite des Plattenzylinders 1 reichenden Trichter dar, der bewirkt, daß die Vorderkante der Druckplatte direkt in den spaltförmigen Erfassungsbereich 17 eingeführt werden kann.A new pressure plate to be fed can be inserted directly into the tensioning rail 3 at the top of the
Nachdem die Druckplatte in die vordere Spannschiene 3 eingeführt wurde und diese durch Schließen des Erfassungsbereiches 17 den Druckanfang der Druckplatte geklemmt hat, kann das Blechprofil 8 mit der Einführschiene 9 wieder abgeschwenkt werden. Der Plattenzylinder 1 wird nun über entsprechende Ansteuerung des Hauptantriebs der Druckmaschine in eine langsame Vorwärtsdrehung versetzt, wobei sich die Druckplatte um den Außenumfang des Plattenzylinders 1 aufzieht. In Fig. 1 ist eine Andrückrolle 18 an den Plattenzylinder 1 an- und abstellbar gelagert vorgesehen, durch welche die Druckplatte beim Aufziehvorgang an den Außenumfang des Plattenzylinders angedrückt wird. Die Andrückrolle 18 erstreckt sich über die gesamte Formatbreite und ist beispielsweise über zwei Lagerhebel (je einer an einer Seitengestellwand der Druckmaschine) und über je einen Pneumatikzylinder an- und abstellbar. Wie aus dem Stand der Technik bekannt, vermag eine derartige Andrückrolle 18 auch das nachlaufende Ende der Druckplatte in eine entsprechend gestaltete Spannschiene 4 des Druckendes einzuführen. Diese wird sodann über fernbetätigbare Einrichtungen im Plattenzylinder geschlossen.After the pressure plate has been inserted into the front tensioning rail 3 and the latter has clamped the start of printing of the pressure plate by closing the
Zum An- und Abschwenken des Blechprofils 8 mit der Einführschiene 9 sind beispielsweise an beiden Seitengestellwänden der Druckmaschine je ein Pneumatikzylinder 19 angebracht, der über je einen gestellfest gelagerten Winkelhebel 20 und je einen daran angebrachten Mitnehmerzapfen (nicht dargestellt) das entsprechende Verschwenken des Blechprofiles 8 bewirkt. Selbstverständlich können die Pneumatikzylinder 19 auch direkt im Schutz 6 angebracht und direkt am Blechprofil 8 angelenkt sein.For pivoting the sheet-
Die erfindungsgemäße Vorrichtung eignet sich nicht nur zum Zuführen einer neuen Druckplatte zum Plattenzylinder 1 sondern ebenfalls zum Abführen einer auf dem Plattenzylinder 1 befindlichen Druckplatte. Da das Blechprofil 8 mit der Einführschiene 9 in der Ruhestellung, d.h. im nicht angeschwenkten Zustand die in Fig. 1 gestrichelt angedeutete Lage einnimmt (beispielsweise durch Anschlag), kann eine Druckplatte bei Rückwärtsdrehung des Plattenzylinders 1, geöffneter Spannschiene 4 sowie angestellter Andrückrolle 18 sich über die Bürsten 13 des Blechprofils 8 abstützend zwischen den Führungsblechen 11 und 12 am Schutz 6 herausgefördert werden.The device according to the invention is suitable not only for feeding a new printing plate to the
- 11
- PlattenzylinderPlate cylinder
- 22nd
- ZylindergrubeCylinder pit
- 33rd
- Spannschiene (Druckanfang)Tensioning rail (start of printing)
- 44th
- Spannschiene (Druckende)Tensioning rail (printing end)
- 55
- GummituchzylinderBlanket cylinder
- 66
- Schutzprotection
- 77
- SchwenkachseSwivel axis
- 88th
- BlechprofilSheet profile
- 99
- EinführschieneInsertion rail
- 1010th
- Traversetraverse
- 1111
- FührungsblechGuide plate
- 1212th
- FührungsblechGuide plate
- 1313
- Bürstento brush
- 1414
- Bürstento brush
- 1515
- EinführflächeInsertion surface
- 1616
- Anschlagattack
- 1717th
- ErfassungsbereichDetection area
- 1818th
- AndrückrollePressure roller
- 1919th
- PneumatikzylinderPneumatic cylinder
- 2020th
- WinkelhebelAngle lever
- DATHERE
- DruckanfangStart of printing
- DEDE
- DruckendeEnd of printing
Claims (9)
- Device for feeding printing plates to the plate cylinder of printing presses, particularly offset sheet printing presses, in which the plate cylinder (1) has in a cylinder channel (2) a tensioning rail (3) arranged for the print start (DA), which for receiving the front edge of the printing plate has a grasping region (17) which can be opened in the form of a slot extending across the format width, which in substantially tangential direction debouches at the exterior periphery of the plate cylinder (1) and a running-in surface (15) for a new printing plate which is laid against the plate cylinder (1) and can be set against this is provided, characterised in that the guiding-in surface (15) is constructed as a guiding-in rail (9) extending across the format width of the plate cylinder (1), which can be set against the exterior periphery of the plate cylinder (1) in the region of the print start (DA) so that via the guiding-in surface (15) directed towards the plate cylinder (1) of the guiding-in rail (9) the front edge of a printing plate can be introduced into the opened grasping region (17) of the tensioning rail (3).
- Device according to Claim 1, characterised in that the feeding-in rail (9) is mounted swivellably about a swivel axis (7) running parallel to the axis of the plate cylinder (1).
- Device according to Claim 2, characterised in that the swivel axis (7) is attached to a protective cover (6) arranged in front of the printing unit cylinders, which particularly is displaceable via means of a linear guide installed in each case on one side frame wall of the printing unit.
- Device according to Claim 2 or 3, characterised in that the guiding-in rail (9) is attached at the swivellable end of a profiled metal sheet (8) extending over the format width of the plate cylinder (11), which is suspended with one side on the swivel axis (7).
- Device according to Claim 4, characterised in that the shaped metal sheet (8) has a curvature in the direction transverse to the format width and is suspended on the swivel axis (7) with the concave side of this curvature is directed to the plate cylinder (1).
- Device according to Claim 4 or 5, characterised in that the guiding-in surface (15) of the guiding-in rail (9) is constructed as a shaped region of the swivellable end of the shaped metal sheet (8).
- Device according to one of Claim 4 to 6, characterised in that on the side of the shaped metal sheet (8) directed towards the plate cylinder (1) brushes (13) are attached via which the printing plate to be fed in can be supported on its printing side.
- Device according to one of the preceding Claims, characterised in that on both ends of the feeding-in rail (9) stops (16) are attached via which the running-in rail (9) is supportable on the bearer rings of the plate cylinder (1).
- Device according to one of the preceding Claims, characterized in that the running-in rail (9) is adjustable, in each case via a pneumatic cylinder (19) attached to a side wall of the printing press, against the plate cylinder (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4215969 | 1992-05-18 | ||
| DE4215969A DE4215969C2 (en) | 1992-05-18 | 1992-05-18 | Device for feeding printing plates onto the plate cylinders of printing machines, in particular sheet-fed offset printing machines |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0570702A1 EP0570702A1 (en) | 1993-11-24 |
| EP0570702B1 true EP0570702B1 (en) | 1996-03-13 |
| EP0570702B2 EP0570702B2 (en) | 2001-12-19 |
Family
ID=6458887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93106206A Expired - Lifetime EP0570702B2 (en) | 1992-05-18 | 1993-04-16 | Device for feeding printing plates to the plate cylinder of a printing machine, in particular offset sheet-fed printing machine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5331892A (en) |
| EP (1) | EP0570702B2 (en) |
| JP (1) | JP2941598B2 (en) |
| AT (1) | ATE135298T1 (en) |
| DE (2) | DE4215969C2 (en) |
| ES (1) | ES2086150T5 (en) |
Families Citing this family (38)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4309658C1 (en) * | 1993-03-25 | 1994-10-27 | Roland Man Druckmasch | Device for automatically changing printing plates in sheet-fed offset printing machines with several printing units |
| DE4322027A1 (en) * | 1993-07-02 | 1995-01-19 | Zirkon Druckmaschinen Gmbh | Device for automatically changing a printing plate |
| DE4338664C2 (en) * | 1993-11-12 | 1995-09-14 | Roland Man Druckmasch | Method and device for controlling an automated printing plate changing process in printing machines |
| DE4339344C1 (en) * | 1993-11-18 | 1995-03-30 | Roland Man Druckmasch | Device for the automated exchange of printing plates in a printing machine |
| 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 |
| JP2929508B2 (en) * | 1994-01-17 | 1999-08-03 | ケーニツヒ ウント バウエル−アルバート アクチエンゲゼルシヤフト | Device for mounting, removing and transporting easily deflectable sheet-like objects with hook edges |
| DE4404558C2 (en) * | 1994-02-12 | 1996-02-01 | Roland Man Druckmasch | Device for automatically changing printing plates |
| FR2718675B1 (en) * | 1994-04-18 | 1996-07-12 | Heidelberg Harris Sa | Device for exchanging pictures of rotary printing machines. |
| DE9415751U1 (en) * | 1994-09-29 | 1994-11-17 | Man Roland Druckmaschinen Ag, 63069 Offenbach | Device for feeding a printing plate to the plate cylinder of a printing machine |
| DE4442574C2 (en) * | 1994-11-30 | 1996-11-28 | Koenig & Bauer Albert Ag | Method and device for providing a printing plate |
| DE19505630A1 (en) * | 1995-02-18 | 1996-08-22 | Roland Man Druckmasch | Device for changing printing plates |
| DE19508846C2 (en) * | 1995-03-11 | 2002-10-31 | Koenig & Bauer Ag | Device for inserting a leading edge of a printing plate |
| DE19511075A1 (en) * | 1995-03-25 | 1996-09-26 | Roland Man Druckmasch | Method and device for mounting flexible printing forms |
| FR2732268B1 (en) * | 1995-03-31 | 1997-06-20 | Heidelberg Harris Sa | DEVICE FOR EXCHANGING PRINTING PLATES |
| US6113346A (en) | 1996-07-31 | 2000-09-05 | Agfa Corporation | Method for loading and unloading a supply of plates in an automated plate handler |
| EP0862999B1 (en) * | 1997-03-04 | 2002-02-06 | MAN Roland Druckmaschinen AG | Web printing press for a fast production change |
| DE19803727A1 (en) * | 1998-01-30 | 1999-08-05 | Heidelberger Druckmasch Ag | Method and device for automatically feeding and / or removing printing plates to / from the plate cylinder of a printing press |
| DE19818666B4 (en) * | 1998-04-27 | 2010-09-02 | Goss International Montataire S.A. | Pressing device in printing units of rotary printing machines |
| DE10008489B4 (en) * | 1999-03-19 | 2006-08-24 | Heidelberger Druckmaschinen Ag | Method and device for feeding a printing plate |
| JP3817090B2 (en) * | 1999-06-30 | 2006-08-30 | 富士写真フイルム株式会社 | Printing plate mounting equipment |
| DE19933943A1 (en) | 1999-07-20 | 2001-01-25 | Roland Man Druckmasch | Method and device for printing form change |
| DE29912599U1 (en) * | 1999-07-20 | 1999-09-09 | MAN Roland Druckmaschinen AG, 63075 Offenbach | Sheet printing machine |
| JP4410347B2 (en) * | 1999-09-17 | 2010-02-03 | 株式会社小森コーポレーション | Printer |
| CZ297967B6 (en) * | 2000-08-25 | 2007-05-09 | Heidelberger Druckmaschienen Ag | Device for setting at least one register element in a printing machine and method of making the same |
| DE10052773B4 (en) * | 2000-10-25 | 2005-02-17 | Koenig & Bauer Ag | Apparatus for feeding a printing plate onto a plate cylinder of a printing machine |
| EP1459894B1 (en) | 2001-11-28 | 2005-12-28 | Koenig & Bauer Aktiengesellschaft | Method for mounting a covering on the surface area of a cylinder in a printing machine |
| DE10158158A1 (en) * | 2001-11-28 | 2003-06-18 | Koenig & Bauer Ag | Device for winding an elevator |
| US6900826B2 (en) * | 2002-02-19 | 2005-05-31 | Presstek, Inc. | Multiple resolution helical imaging system and method |
| US6722280B2 (en) * | 2002-08-09 | 2004-04-20 | Agfa Corporation | Method and system for simultaneous loading and unloading of substrates in platestter |
| US6941863B2 (en) | 2003-11-21 | 2005-09-13 | Shinohara Machinery Co., Ltd. | Plate transfer apparatus |
| DE10354967B3 (en) * | 2003-11-25 | 2005-05-19 | Shinohara Machinery Co., Ltd. | Printing plate transfer device for printing press has transfer band rotated in opposite directions for removal of used printing plate and supply of new printing plate respectively |
| US20080314274A1 (en) * | 2007-06-19 | 2008-12-25 | Cummings Calvin D | Method and apparatus for unloading printing plates |
| DE102008043725A1 (en) | 2008-11-13 | 2010-06-02 | Manroland Ag | Device for exchanging and for receiving printing plates at rotary printing presses, comprises manipulator arm with holding element for holding printing plate |
| DE202008015082U1 (en) | 2008-11-13 | 2009-01-15 | Manroland Ag | Device for changing and receiving printing forms on rotary printing machines |
| CN101830105B (en) | 2009-03-13 | 2014-04-09 | 海德堡印刷机械股份公司 | Method and apparatus for feeding printing plates |
| DE102021109488A1 (en) | 2021-04-15 | 2022-10-20 | Koenig & Bauer Ag | Device for supplying printing plates and method for carrying out a plate change |
| DE102021122827A1 (en) | 2021-09-03 | 2023-03-09 | Koenig & Bauer Ag | Apparatus and method for feeding printing plates to a plate cylinder |
| DE102022109489A1 (en) | 2022-04-20 | 2023-10-26 | Koenig & Bauer Ag | Sheetfed offset rotary printing machine in aggregate design |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS609031Y2 (en) * | 1978-06-26 | 1985-04-01 | 株式会社サト−研究所 | Printing device for hand labeler |
| JPS5922755A (en) * | 1982-07-30 | 1984-02-06 | Komori Printing Mach Co Ltd | Apparatus for holding press plate of sheet-fed rotary press |
| JPS62221541A (en) * | 1986-03-25 | 1987-09-29 | Mitsubishi Heavy Ind Ltd | Automatic press plate installation device |
| JP2726661B2 (en) * | 1986-09-18 | 1998-03-11 | 三菱重工業株式会社 | Plate insertion device for sheet-fed printing press |
| ATE128669T1 (en) * | 1989-12-06 | 1995-10-15 | Komori Printing Mach | PLATE FEEDING DEVICE FOR PRINTING PRESSES. |
| JP2884245B2 (en) * | 1989-12-06 | 1999-04-19 | 株式会社 小森コーポレーション | Plate holding device for printing press |
| DE3940795A1 (en) * | 1989-12-09 | 1991-06-13 | Koenig & Bauer Ag | METHOD AND DEVICE FOR AUTOMATIC FEEDING OR REMOVING A PRINT PLATE |
| DE3940796A1 (en) * | 1989-12-09 | 1991-06-13 | Koenig & Bauer Ag | METHOD AND DEVICE FOR AUTOMATICALLY CHANGING A PRINT PLATE |
| JP2844539B2 (en) * | 1989-12-15 | 1999-01-06 | 株式会社小森コーポレーション | Plate holding device for printing press |
| DE4214049A1 (en) * | 1992-04-29 | 1993-11-04 | Heidelberger Druckmasch Ag | DEVICE FOR FEEDING A PRINT PLATE TO A PLATE CYLINDER OF A PRINTING MACHINE |
-
1992
- 1992-05-18 DE DE4215969A patent/DE4215969C2/en not_active Expired - Fee Related
-
1993
- 1993-04-16 DE DE59301844T patent/DE59301844D1/en not_active Expired - Fee Related
- 1993-04-16 EP EP93106206A patent/EP0570702B2/en not_active Expired - Lifetime
- 1993-04-16 AT AT93106206T patent/ATE135298T1/en not_active IP Right Cessation
- 1993-04-16 ES ES93106206T patent/ES2086150T5/en not_active Expired - Lifetime
- 1993-05-17 JP JP5114529A patent/JP2941598B2/en not_active Expired - Fee Related
- 1993-05-18 US US08/064,752 patent/US5331892A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2086150T3 (en) | 1996-06-16 |
| EP0570702A1 (en) | 1993-11-24 |
| JPH0631901A (en) | 1994-02-08 |
| US5331892A (en) | 1994-07-26 |
| DE59301844D1 (en) | 1996-04-18 |
| ATE135298T1 (en) | 1996-03-15 |
| DE4215969A1 (en) | 1993-12-02 |
| JP2941598B2 (en) | 1999-08-25 |
| DE4215969C2 (en) | 1994-10-13 |
| EP0570702B2 (en) | 2001-12-19 |
| ES2086150T5 (en) | 2002-05-01 |
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