EP0045374B1 - Gripper mechanism on cylinders of printing machines, especially in rotary sheet-printing machines - Google Patents
Gripper mechanism on cylinders of printing machines, especially in rotary sheet-printing machines Download PDFInfo
- Publication number
- EP0045374B1 EP0045374B1 EP81104957A EP81104957A EP0045374B1 EP 0045374 B1 EP0045374 B1 EP 0045374B1 EP 81104957 A EP81104957 A EP 81104957A EP 81104957 A EP81104957 A EP 81104957A EP 0045374 B1 EP0045374 B1 EP 0045374B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gripper
- cylinder
- base
- shaft
- link
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
- B41F21/10—Combinations of transfer drums and grippers
Definitions
- the invention relates to a gripper device on cylinders for printing presses, in particular sheet-fed rotary printing presses for perfecting, where the gripper device consists of cam-controlled grippers rotatably arranged on a gripper shaft and of gripper supports and is pivotably arranged in a cylinder channel within the cylinder contour such that between the gripper support and Cylinder channel wall a rubber blanket required for printing can be inserted and tensioned.
- a gripper device for holding and transporting the sheets must be provided on at least one rubber cylinder.
- This gripper device must be arranged so that the sheet is held as close as possible to the start of printing. It must also be possible to attach and stretch the rubber blanket on the cylinder. This requirement requires a special design of the gripper device, namely that the gripper device must be designed to be pivotable.
- Such a device shows e.g. B. DE-A 1 561 082, in which the gripper and gripper support are arranged on a lever which can be driven in a simple circular movement in the direction of the cylinder channel floor via a crank mechanism. In the pivoted position towards the channel floor, the lever releases a fastening device into which the rubber blanket can be inserted. Since the lever is also used as a gripper support and bearing for the gripper shaft and the lever is driven via a spring-loaded coupling near the channel floor, a relatively large space requirement is required in the radial direction of the cylinder channel.
- the object of the invention is to design the pivoting movement of the gripper device for a printing cylinder for changing the rubber blanket so that it takes place in a space-saving construction essentially in the cylinder circumferential direction.
- the claimed design of the swivel gear enables the grippers to be pivoted approximately in the cylinder circumferential direction, as a result of which the lever for the gripper opening is moved in accordance with the gripper opening curve running in the cylinder circumferential direction and the gripper thus remains closed.
- the cylinder 1 has two tension shafts 3 and 4 in a channel 2, which have recesses 5 for receiving reinforced rubber blanket ends 6.
- a bearing is attached, on which a tab 9 is articulated.
- a bearing bush 10 is mounted, in which the gripper shaft 11 is in turn mounted eccentrically.
- the gripper pad 12 is rotatably mounted on the gripper shaft 11 and articulated to a bracket 9, which in turn is pivotally held at its other end by means of a bearing 8 on the bottom 7 of the channel 2.
- This three-link chain 9, 12 and 10, 11 results in a stable position for the gripper pad 12.
- the gripper support 12 and the gripper (s) 13 which according to FIG.
- the gripper shaft 11 are also mounted on the gripper shaft 11 and are shown laterally offset in this figure for graphic reasons relative to the gripper support 12, are in such a position in which is a short distance from the printing start edge 14.
- the rubber blanket 16 is located between the gripper pad 12 and the wall 15 of the cylinder channel 2.
- the eccentric bearing bush 10 is pivoted about 45 ° counterclockwise according to FIG., Whereby the gripper pad 12 together with the gripper 13 is moved away from the wall 15.
- the bearing bush 10 has an extension with a bore 19 into which a removable lever can be inserted as a pivotable actuating handle.
- the bearing bush 10 can be pivoted away with the grippers and gripper pads.
- the geometrical design of the bearing bush 10 results in an approximately rectilinear movement in the cylinder circumferential direction for the gripper 13 and the gripper support 12, so that the gripper 13 does not open, since the corresponding part of the gripper opening curve, by means of which the gripper is actuated in the course of the cylinder rotation, also runs almost straight.
- the machine drive is switched by a known protective circuit so that only a creep speed is made possible in reverse operation.
- the protective circuit is actuated via the swivel mechanism of the gripper 13.
- Lock 17 is the gripper swivel mechanism can also be locked in the working position.
Landscapes
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Discharge By Other Means (AREA)
Abstract
Description
Die Erfindung betrifft eine Greifereinrichtung an Zylindern für Druckmaschinen, insbesondere Bogenrotationsdruckmaschinen für Schön- und Widerdruck, wobei die Greifereinrichtung aus auf einer Greiferwelle verdrehbar angeordneten, kurvengesteuerten Greifern und aus Greiferauflagen besteht und in einem Zylinderkanal innerhalb der Zylinderkontur derart schwenkbar angeordnet ist, daß zwischen Greiferauflage und Zylinderkanalwand ein für den Druck erforderliches Gummituch einfüg- und spannbar ist.The invention relates to a gripper device on cylinders for printing presses, in particular sheet-fed rotary printing presses for perfecting, where the gripper device consists of cam-controlled grippers rotatably arranged on a gripper shaft and of gripper supports and is pivotably arranged in a cylinder channel within the cylinder contour such that between the gripper support and Cylinder channel wall a rubber blanket required for printing can be inserted and tensioned.
Es ist bekannt, daß bei Rollenrotationsoffsetdruckmaschinen ein sogenanntes Gummi-Gummi-Druckwerk verwendet wird, d. h. der Druck erfolgt zwischen zwei mit Gummitüchern bespannten Zylindern.It is known that a so-called rubber-rubber printing unit is used in web-fed rotary offset printing machines, i. H. printing takes place between two cylinders covered with rubber blankets.
Wenn dieses Druckprinzip auf Bogenmaschinen übertragen werden soll, so muß an mindestens einem Gummizylinder eine Greifereinrichtung zum Festhalten und Transport der Bogen vorgesehen sein. Diese Greifereinrichtung muß so angeordnet sein, daß möglichst nahe am Druckanfang der Bogen gehalten ist. Weiterhin muß die Möglichkeit bestehen, das Gummituch auf dem Zylinder zu befestigen und zu spannen. Diese Forderung erfordert eine besondere Ausgestaltung der Greifereinrichtung, nämlich der, daß die Greifereinrichtung abschwenkbar ausgebildet sein muß.If this printing principle is to be transferred to sheet-fed machines, a gripper device for holding and transporting the sheets must be provided on at least one rubber cylinder. This gripper device must be arranged so that the sheet is held as close as possible to the start of printing. It must also be possible to attach and stretch the rubber blanket on the cylinder. This requirement requires a special design of the gripper device, namely that the gripper device must be designed to be pivotable.
Eine derartige Vorrichtung zeigt z. B. die DE-A 1 561 082, bei der Greifer und Greiferauflage auf einem Hebel angeordnet sind, der in einer einfachen Kreisbewegung in Richtung zum Zylinderkanalboden verschwenkbar über einen Kurbeltrieb antreibbar ist. In der abgeschwenkten Stellung zum Kanalboden hin gibt der Hebel eine Befestigungseinrichtung frei, in die das Gummituch eingeführt werden kann. Da der Hebel gleichzeitig als Greiferauflage und Lager für die Greiferwelle Anwendung findet und der Antrieb des Hebels über eine gefederte Koppel in Kanalbodennähe erfolgt, ist in radialer Richtung des Zylinderkanales gesehen ein relativ großer Raumbedarf erforderlich.Such a device shows e.g. B. DE-A 1 561 082, in which the gripper and gripper support are arranged on a lever which can be driven in a simple circular movement in the direction of the cylinder channel floor via a crank mechanism. In the pivoted position towards the channel floor, the lever releases a fastening device into which the rubber blanket can be inserted. Since the lever is also used as a gripper support and bearing for the gripper shaft and the lever is driven via a spring-loaded coupling near the channel floor, a relatively large space requirement is required in the radial direction of the cylinder channel.
Die Aufgabe der Erfindung besteht darin, die Abschwenkbewegung der Greifereinrichtung für einen Druckzylinder zum Auswechseln des Gummituches so auszugestalten, daß sie bei raumsparender Bauweise im wesentlichen in Zylinderumfangsrichtung erfolgt.The object of the invention is to design the pivoting movement of the gripper device for a printing cylinder for changing the rubber blanket so that it takes place in a space-saving construction essentially in the cylinder circumferential direction.
Gelöst wird diese Aufgabe durch das Kennzeichen des ersten Anspruchs.This problem is solved by the characteristic of the first claim.
Durch die beanspruchte Ausgestaltung des Schwenkgetriebes wird eine annähernde Verschwenkung der Greifer in Zylinderumfangsrichtung ermöglicht, wodurch der Hebel für die Greiferöffnung entsprechend der in Zylinderumfangsrichtung verlaufenden Greiferöffnungskurve bewegt wird und der Greifer damit geschlossen bleibt.The claimed design of the swivel gear enables the grippers to be pivoted approximately in the cylinder circumferential direction, as a result of which the lever for the gripper opening is moved in accordance with the gripper opening curve running in the cylinder circumferential direction and the gripper thus remains closed.
Nachfolgend ist an einem Ausführungsbeispiel die Erfindung näher erläutert :
- Figur 1 zeigt einen Schnitt durch den mit Greifern bestückten Gummizylinder einer Schön-und Widerdruckmaschine.
Figur 2 zeigt eine Aufsicht entsprechend der Fig. 1.
- Figure 1 shows a section through the rubber cylinder equipped with grippers of a perfecting machine.
- FIG. 2 shows a top view corresponding to FIG. 1.
Der Zylinder 1 weist in einem Kanal 2 zwei Spannwellen 3 und 4 auf, die Ausnehmungen 5 zur Aufnahme von armierten Gummituchenden 6 besitzen. Auf dem Boden 7 des Kanals ist ein Lager befestigt, an dem eine Lasche 9 beweglich angelenkt ist. In den den Kanal 2 seitlich begrenzenden, nicht gezeigten Seitenwänden ist eine Lagerbüchse 10 gelagert, in denen wiederum die Greiferwelle 11 exzentrisch gelagert ist. Desweiteren ist die Greiferauflage 12 auf der Greiferwelle 11 drehbar gelagert und gelenkig an einer Lasche 9 angelenkt, die wiederum mit ihrem anderen Ende mittels eines Lagers 8 am Boden 7 des Kanals 2 schwenkbar gehalten ist. Durch diese Dreigelenkkette 9, 12 und 10, 11 ergibt sich für die Greiferauflage 12 eine stabile Lage. Während der gezeigten Arbeitsstellung befinden sich die Greiferauflage 12 und der bzw. die Greifer 13, die gemäß Fig. 2 ebenfalls an der Greiferwelle 11 gelagert und in dieser Figur aus zeichnerischen Gründen gegenüber der Greiferauflage 12 seitlich versetzt dargestellt sind, in einer solchen Position, in der ein geringer Abstand zur Druckanfangskante 14 besteht. Zwischen der Greiferauflage 12 und der Wand 15 des Zylinderkanals 2 befindet sich das Gummituch 16. Zum Befestigen des Gummituches 16 ist es erforderlich, den Greifer 13 mit der Greiferauflage 12 abzuschwenken. Hierzu wird die exzentrische Lagerbüchse 10 um ca. 45° entgegen dem Uhrzeigersinn gemäß Fig. verschwenkt, wodurch die Greiferauflage 12 mit dem Greifer 13 zusammen von der Wand 15 wegbewegt wird. Zum Verschwenken weist die Lagerbüchse 10 einen Ansatz mit einer Bohrung 19 auf, in die ein herausnehmbarer Hebel als schwenkbarer Betätigungsgriff einsteckbar ist.The cylinder 1 has two
Mit diesem Hebel ist die Lagerbüchse 10 mit den Greifern und Greiferauflagen wegschwenkbar. Durch die geometrische Ausgestaltung der Lagerbüchse 10 ergibt sich für den Greifer 13 und die Greiferauflage 12 eine annähernd geradlinige Bewegung in Zylinderumfangsrichtung, so daß der Greifer 13 nicht öffnet, da der entsprechende Teil der Greiferöffnungskurve, mittels welcher der Greifer im Verlaufe der Zylinderdrehung betätigt wird, ebenfalls annähernd geradlinig verläuft.With this lever, the
Damit bei abgeschwenktem Greifer 13 und damit beim Aufziehen des Gummituches 16 der Bedienungsmann keiner Verletzungsgefahr ausgesetzt ist, wird durch eine bekannte Schutzschaltung der Maschinenantrieb so geschaltet, daß lediglich ein Schleichgang im Rückwärts-betrieb ermöglicht wird. Die Schutzschaltung wird über den Schwenkmechanismus der Greifer 13 betätigt. Durch eine mechan. Verriegelung 17 ist der Greiferschwenkmechanismus zusätzlich in Arbeitsposition arretierbar.So that the operator is not exposed to any risk of injury when the
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81104957T ATE5865T1 (en) | 1980-08-01 | 1981-06-26 | GRIPPER DEVICE ON CYLINDERS FOR PRINTING MACHINES, PARTICULARLY SHEET ROTARY PRINTING MACHINES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3029219 | 1980-08-01 | ||
DE19803029219 DE3029219A1 (en) | 1980-08-01 | 1980-08-01 | GRIPPER DEVICE ON CYLINDERS FOR PRINTING MACHINES, ESPECIALLY ARC ROTATION PRINTING MACHINES |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0045374A1 EP0045374A1 (en) | 1982-02-10 |
EP0045374B1 true EP0045374B1 (en) | 1984-01-18 |
Family
ID=6108676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81104957A Expired EP0045374B1 (en) | 1980-08-01 | 1981-06-26 | Gripper mechanism on cylinders of printing machines, especially in rotary sheet-printing machines |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0045374B1 (en) |
AT (1) | ATE5865T1 (en) |
DE (2) | DE3029219A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19963574A1 (en) * | 1999-12-29 | 2001-07-05 | H C Moog Gmbh Maschinen Fuer D | Sheet processing printing machine |
DE102009054744A1 (en) | 2009-01-30 | 2010-08-05 | Manroland Ag | Gripper arrangement on bow-leading cylinders |
DE102011080321B4 (en) | 2010-09-09 | 2014-08-28 | manroland sheetfed GmbH | Gripper arrangement on bow-leading cylinders |
DE102011088017A1 (en) | 2011-12-08 | 2013-06-13 | manroland sheetfed GmbH | Sheet guiding cylinder with a gripper device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1561082A1 (en) * | 1967-06-20 | 1970-04-16 | Albert Schnellpressen | Device for clamping the printing cylinder elevator on printing machines |
-
1980
- 1980-08-01 DE DE19803029219 patent/DE3029219A1/en not_active Withdrawn
-
1981
- 1981-06-26 DE DE8181104957T patent/DE3161957D1/en not_active Expired
- 1981-06-26 EP EP81104957A patent/EP0045374B1/en not_active Expired
- 1981-06-26 AT AT81104957T patent/ATE5865T1/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1561082A1 (en) * | 1967-06-20 | 1970-04-16 | Albert Schnellpressen | Device for clamping the printing cylinder elevator on printing machines |
Also Published As
Publication number | Publication date |
---|---|
DE3161957D1 (en) | 1984-02-23 |
DE3029219A1 (en) | 1982-05-13 |
EP0045374A1 (en) | 1982-02-10 |
ATE5865T1 (en) | 1984-02-15 |
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