DE1218469B - Device on the forme cylinder of rotary printing machines for attaching flexible printing plates that extend over part of the circumference of the printing cylinder - Google Patents

Device on the forme cylinder of rotary printing machines for attaching flexible printing plates that extend over part of the circumference of the printing cylinder

Info

Publication number
DE1218469B
DE1218469B DEM56174A DEM0056174A DE1218469B DE 1218469 B DE1218469 B DE 1218469B DE M56174 A DEM56174 A DE M56174A DE M0056174 A DEM0056174 A DE M0056174A DE 1218469 B DE1218469 B DE 1218469B
Authority
DE
Germany
Prior art keywords
printing
cylinder
plates
circumference
forme 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.)
Pending
Application number
DEM56174A
Other languages
German (de)
Inventor
Kurt Wenzel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Priority to DEM56174A priority Critical patent/DE1218469B/en
Priority to CH177864A priority patent/CH420212A/en
Priority to GB1016464A priority patent/GB1037572A/en
Publication of DE1218469B publication Critical patent/DE1218469B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F27/00Devices for attaching printing elements or formes to supports
    • B41F27/12Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1243Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by pivotal or swivelling motion, e.g. by means of a rocking lever

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Description

Vorrichtung am Formzylinder von Rotationsdruckmaschinen zum Befestigen biegsamer, über einen Teil des Druckzylinderumfangs reichender Druckplatten Die Erfmdung betrifft eine Vorrichtung am Formzylinder von Rotationsdruckmaschinen zum Befestigen biegsamer, über einen Teil des Zylinderumfanges reichender Druckplatten mittels in dessen Nuten angeordneter, jeweils benachbarte Enden zweier Druckplatten erfassender Halteeinrichtungen.Device for attaching to the forme cylinder of rotary printing machines flexible printing plates that extend over part of the circumference of the printing cylinder The invention relates to a device on the forme cylinder of rotary printing presses Fastening flexible pressure plates that extend over part of the cylinder circumference by means of adjacent ends of two pressure plates arranged in its grooves detecting holding devices.

Zur Befestigung von über den halben Umfang reichenden Platten am Formzylinder sind u. a. aus zwei Hälften bestehende Zylinder bekannt, wobei in der Nähe der Mantelfläche Ausnehmungen vorgesehen sind, welche beim Zusammenziehen der beiden Zylinderhälften die mit Zahnleisten od. dgl. versehenen Druckplatten auf den Zylinder spannen. Durch diese Unterteilung des Zylinders und die Anbringung von Endverstärkungen an den Platten wird die Herstellung jedoch erschwert und werden auch die hierfür erforderlichen Kosten unnötig erhöht.For fastening plates that extend over half the circumference on the forme cylinder are i.a. cylinder consisting of two halves is known, being in the vicinity of the lateral surface Recesses are provided, which when the two cylinder halves are drawn together Tension the pressure plates provided with toothed strips or the like onto the cylinder. By this division of the cylinder and the attachment of end reinforcements to the However, panels are made more difficult to manufacture and are also required for this Unnecessarily increased costs.

Es ist ferner bekannt, vier Spannspindeln im Innern des Formzylinders anzuordnen, an denen jeweils die geraden Kanten der beiden über den halben Umfang reichenden biegsamen Platten befestigt und durch Drehen der Spindeln gespannt werden. Neben einem erheblichen Kraftaufwand weist diese Ausführung auch den Nachteil auf, daß beim Ziehen über die scharfen Kanten der Zylinder, die Gefahr von Beschädigungen besteht. Bei einer anderen ebenfalls vier Spannvorrichtungen aufweisenden Ausführung wird beim Verschwenken der Spannhaken in die Spannstellung der weiße Rand vergrößert und damit die Druckfläche in unerwünschtem Maße verringert.It is also known to have four clamping spindles inside the forme cylinder to be arranged, on each of which the straight edges of the two over half the circumference extending flexible plates and tightened by turning the spindles. In addition to the considerable expenditure of force, this version also has the disadvantage that when pulling over the sharp edges of the cylinder, there is a risk of damage consists. In another version, which also has four clamping devices the white border is enlarged when the clamping hooks are swiveled into the clamping position and thus the printing area is reduced to an undesirable extent.

Diese Nachteile können bei einer Vorrichtung der eingangs erwähnten Art erfindungsgemäß dadurch vermieden werden, daß jeweils die einen benachbarten Enden zweier Druckplatten mittels einer gemeinsamen, an sich bekannten radial nach einwärts wirkenden Spanneinrichtung und die anderen benachbarten Enden zweier Druckplatten mittels einer gemeinsamen Klemmvorrichtung gehalten sind, die durch zwei an sich bekannte zweiarmige, jeweils an dem einen Arm federbelastete und mit dem anderen Arm die Druckplattenenden gegen die Nutenwände des Formzylinders drückende Schwenkhebel gebildet ist, die um eine gemeinsame Achse schwenkbar und mittels einer gemeinsamen Exzenterwelle von den Druckplattenenden abhebbar sind.These disadvantages can occur in a device of the type mentioned at the outset Art can be avoided according to the invention in that each one adjacent Ends of two pressure plates by means of a common, known per se radially after inward acting clamping device and the other adjacent ends of two pressure plates are held by means of a common clamping device by two per se known two-armed, each spring-loaded on one arm and with the other Arm pressing the printing plate ends against the groove walls of the forme cylinder pivot lever is formed, which is pivotable about a common axis and by means of a common The eccentric shaft can be lifted off the pressure plate ends.

Durch diese Maßnahme wird der Aufwand beim Aufspannen biegsamer Platten wesentlich verringert, weil an Stelle der bisher beidseitig angeordneten Spannvorrichtungen nur an einer Kante eine Spannvorrichtung, an der anderen Kante hingegen eine einfache Klemmvorrichtung für die benachbarten Enden hintereinanderliegender Platten vorgesehen ist. Darüber hinaus können der Formzylinder aus einem Stück hergestellt und die Platten selbst ohne Verstärkungsleisten lediglich mit abgewinkelten Enden ausgeführt werden.This measure reduces the effort involved in clamping flexible panels significantly reduced, because instead of the clamping devices previously arranged on both sides A clamping device only on one edge, but a simple one on the other edge Clamping device provided for the adjacent ends of panels lying one behind the other is. In addition, the forme cylinder can be made in one piece and the Plates even without reinforcement strips only have angled ends will.

Es ist zwar eine Klemmvorrichtung bekannt, bei der ein federbelasteter Hebel mit dem freien Arm das eine Druckplattenende gegen die Nutenwand des Formzylinders drückt. Das andere Druckplattenende liegt dabei jedoch frei auf dem Zylinder, weshalb ein Spannen der Platte nicht möglich ist.Although there is a clamping device known in which a spring-loaded Lever with the free arm one end of the printing plate against the groove wall of the forme cylinder presses. The other end of the printing plate lies free on the cylinder, which is why clamping of the plate is not possible.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigt F i g. 1 einen Formzylinder mit über den halben Umfang reichenden Platten, F i g. 2 einen Formzylinder mit vier Platten am Umfang schematisch.Exemplary embodiments of the invention are shown in the drawing. It shows F i g. 1 a forme cylinder with plates reaching over half the circumference, F i g. 2 a forme cylinder with four plates on the circumference schematically.

Die eine abgewinkelte Kante der auf den Zylinder 1 aufzuspannenden Platte 2 wird in einen Einschnitt 2 a des Formzylinders eingehängt, während das andere Ende 2 b über eine an sich bekannte sichelförmige Spannvorrichtung 3 gelegt wird. Mittels einer radial einwärts bewegbaren, mit einer Rolle versehenen Stange 4 wird die sichelförmige Schiene wegen der schrägen Innenkanten im gezeigten Fall nach rechts bewegt, wodurch die Platte 2 gespannt wird. Die im Einschnitt 2 a gehaltenen Plattenenden werden durch eine Anzahl Schwenkhebel 5, die unter Federdruck 6 stehen, an die Zylinderwände gepreßt. Zum Zwecke des Abnehmens der Platten ist eine Exzenterwelle 7 vorgesehen, durch deren Verdrehen die Enden des Schwenkhebels 5 bewegt und die Enden 2 a der Platte frei werden.One angled edge of the plate 2 to be clamped onto the cylinder 1 is hooked into an incision 2 a in the forme cylinder, while the other end 2 b is placed over a sickle-shaped clamping device 3 known per se. By means of a radially inwardly movable rod 4 provided with a roller, the sickle-shaped rail is moved to the right because of the inclined inner edges in the case shown, whereby the plate 2 is tensioned. The plate ends held in the incision 2a are pressed against the cylinder walls by a number of pivot levers 5 which are under spring pressure 6. For the purpose of removing the plates, an eccentric shaft 7 is provided, the rotation of which moves the ends of the pivot lever 5 and the ends 2a of the plate become free.

Die Spannvorrichtungen können, wie bekannt, bei mindestens zwei Platten nebeneinander in I:ängsrichtung versetzt zueinander angeordnet sein, um die Grubenstöße aufzufangen.The clamping devices can, as is known, with at least two plates side by side in I: longitudinal direction arranged offset to one another be to absorb the pit bumps.

Claims (1)

Patentanspruch: Vorrichtung am Formzylinder von Rotationsdruckmaschinen zum Befestigen biegsamer, über einen Teil des Zylinderumfanges reichender Druckplatten mittels in dessen Nuten angeordneter, jeweils benachbarte Enden zweier Druckplatten erfassender Halteeinrichtungen, dadurch gekennzeichnet, daß jeweils die einen benachbarten Enden zweier Druckplatten mittels einer gemeinsamen, an sich bekannten radial nach einwärts wirkenden Spanneinrichtung (3, 4) und die anderen benachbarten Enden zweier Druckplatten mittels einer gemeinsamen Klemmvorrichtung (5, 6) gehalten sind, die durch zwei an sich bekannte zweiarmige, jeweils an dem einen Arm federbelastete und mit dem anderen Arm die Druckplattenenden gegen die Nutenwände des Formzylinders drückende Schwenkhebel (5) gebildet ist, die um eine gemeinsame Achse schwenkbar und mittels einer gemeinsamen Exzenterwelle (7) von den Druckplattenenden abhebbar sind. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 1128 442; französische Patentschrift Nr. 553 002; USA.-Patentschriften Nr. 2100 208, 2179 508, 2 268 045, 2768 578.Claim: Device on the forme cylinder of rotary printing machines for fastening flexible printing plates extending over a part of the cylinder circumference by means of holding devices arranged in the grooves thereof, engaging adjacent ends of two printing plates, characterized in that the adjacent ends of two printing plates are each known by means of a common radially inwardly acting clamping device (3, 4) and the other adjacent ends of two pressure plates are held by means of a common clamping device (5, 6), which are held by two known two-armed, each spring-loaded on one arm and the pressure plate ends with the other arm pivot levers (5) which press against the groove walls of the forme cylinder and can pivot about a common axis and can be lifted off the printing plate ends by means of a common eccentric shaft (7). Documents considered: German Patent No. 1128 442; French Patent No. 553 002; U.S. Patents Nos. 2100 208, 2179 508, 2268 045, 2768 578.
DEM56174A 1963-03-20 1963-03-20 Device on the forme cylinder of rotary printing machines for attaching flexible printing plates that extend over part of the circumference of the printing cylinder Pending DE1218469B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEM56174A DE1218469B (en) 1963-03-20 1963-03-20 Device on the forme cylinder of rotary printing machines for attaching flexible printing plates that extend over part of the circumference of the printing cylinder
CH177864A CH420212A (en) 1963-03-20 1964-02-14 Device for clamping flexible printing plates
GB1016464A GB1037572A (en) 1963-03-20 1964-03-10 Improvements in or relating to rotary printing presses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM56174A DE1218469B (en) 1963-03-20 1963-03-20 Device on the forme cylinder of rotary printing machines for attaching flexible printing plates that extend over part of the circumference of the printing cylinder

Publications (1)

Publication Number Publication Date
DE1218469B true DE1218469B (en) 1966-06-08

Family

ID=7308522

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM56174A Pending DE1218469B (en) 1963-03-20 1963-03-20 Device on the forme cylinder of rotary printing machines for attaching flexible printing plates that extend over part of the circumference of the printing cylinder

Country Status (3)

Country Link
CH (1) CH420212A (en)
DE (1) DE1218469B (en)
GB (1) GB1037572A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3018249A1 (en) * 1980-05-13 1981-11-19 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach DEVICE FOR FASTENING BENDABLE PRINTING PLATES ON THE PLATE CYLINDER OF ROTARY PRINTING MACHINES

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR553002A (en) * 1922-06-16 1923-05-11 Anciens Etablissements Marinon Improvements made to the arrangement, fixing and adjustment of transfer plates of roto calco machines
US2100208A (en) * 1934-03-21 1937-11-23 Wood Newspaper Mach Corp Margin bar for printing cylinders
US2179508A (en) * 1937-08-21 1939-11-14 Hoe & Co R Plate clamp for printing machines
US2268045A (en) * 1940-03-09 1941-12-30 Ditto Inc Duplicating apparatus
US2768578A (en) * 1953-10-08 1956-10-30 Tribune Company Lock-up mechanism for dry offset printing plates

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR553002A (en) * 1922-06-16 1923-05-11 Anciens Etablissements Marinon Improvements made to the arrangement, fixing and adjustment of transfer plates of roto calco machines
US2100208A (en) * 1934-03-21 1937-11-23 Wood Newspaper Mach Corp Margin bar for printing cylinders
US2179508A (en) * 1937-08-21 1939-11-14 Hoe & Co R Plate clamp for printing machines
US2268045A (en) * 1940-03-09 1941-12-30 Ditto Inc Duplicating apparatus
US2768578A (en) * 1953-10-08 1956-10-30 Tribune Company Lock-up mechanism for dry offset printing plates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3018249A1 (en) * 1980-05-13 1981-11-19 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach DEVICE FOR FASTENING BENDABLE PRINTING PLATES ON THE PLATE CYLINDER OF ROTARY PRINTING MACHINES

Also Published As

Publication number Publication date
GB1037572A (en) 1966-07-27
CH420212A (en) 1966-09-15

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