EP0056532B1 - Vorrichtung und Verfahren zum diagonalen Einstellen einer Offset-Druckmaschine und Druckmaschine mit dieser Vorrichtung - Google Patents

Vorrichtung und Verfahren zum diagonalen Einstellen einer Offset-Druckmaschine und Druckmaschine mit dieser Vorrichtung Download PDF

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Publication number
EP0056532B1
EP0056532B1 EP19810400066 EP81400066A EP0056532B1 EP 0056532 B1 EP0056532 B1 EP 0056532B1 EP 19810400066 EP19810400066 EP 19810400066 EP 81400066 A EP81400066 A EP 81400066A EP 0056532 B1 EP0056532 B1 EP 0056532B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
blanket
plate
eccentric
blanket 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
Application number
EP19810400066
Other languages
English (en)
French (fr)
Other versions
EP0056532A1 (de
Inventor
Alain Ducournau
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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 Creusot Loire SA filed Critical Creusot Loire SA
Priority to EP19810400066 priority Critical patent/EP0056532B1/de
Priority to DE8181400066T priority patent/DE3165298D1/de
Publication of EP0056532A1 publication Critical patent/EP0056532A1/de
Application granted granted Critical
Publication of EP0056532B1 publication Critical patent/EP0056532B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/28—Bearings mounted eccentrically of the cylinder axis

Definitions

  • the present invention relates to a "crooked" correction method in an offset printing machine; it also relates to the device used for this purpose, and to a printing machine comprising such a device.
  • the plate or plate is fixed on a cylinder called plate cylinder, where it is wet and inked by contact with rollers themselves in contact with distribution rollers.
  • the ink selectively deposited on the plate is distributed over an intermediate cylinder called the blanket cylinder, and from there is deposited on the sheet of paper which passes in contact with the blanket cylinder.
  • the blanket cylinder is normally strictly parallel. If printing takes place on only one side of the paper, the sheet is applied in contact with the blanket by a pressure counter-cylinder; very frequently for two-sided printing machines, another inking assembly with plate cylinder and blanket is disposed approximately symmetrically with respect to the first, and the sheet circulates between the two blanket cylinders, each providing back pressure for the other.
  • the plate plate is fixed and tensioned by a usual device arranged according to a generator of the plate cylinder.
  • the machines comprise a device for adjusting the circumferential and lateral register, allowing an angular and axial relative offset of the plate cylinder with respect to the general drive kinematic chain of the machine, so as to allow in particular the location colors on machines with several printing stations.
  • a correction is sometimes made by acting on the plate cylinder to put it slightly at an angle to the blanket cylinder, so as to thus restore the correct position of the image formed on the plate relative to the blanket.
  • This means of correcting the "cross” obviously makes it possible to act in operation, if care has been taken to mount at least one of the bearings of the plate cylinder on an eccentric housing.
  • the bearings of the plate cylinders generally comprising the mechanisms for adjusting the circumferential and lateral markings, already bulky mechanisms, so that it proves difficult and complex, and consequently expensive to add an additional device for biasing by independent movement of one of the bearings.
  • the skew movement of the plate cylinder leads to an adjustment of the contact of the inking and wetting rollers, and to remedy this new drawback it would be necessary to introduce other devices, again bulky and expensive.
  • the present invention provides a new solution for the correction on the fly of the consequences of a "skewed" defect in photographs.
  • the invention relates to a "crooked" correction method in a rotary offset printing machine comprising at least one assembly of a plate plate plate cylinder and a blanket cylinder in contact with the sheet to be printed, method intended to compensate a slight misalignment of the plate formed on the plate.
  • action is taken by angularly displacing the axis of the blanket cylinder with respect to the axis of the plate cylinder, this displacement being effected substantially in a plane perpendicular to the plane containing the two parallel axes in their normal mean position.
  • the invention also relates to a device for implementing this correction method, applied to a machine where the journals of the blanket cylinders are carried by eccentric bearings associated with a device for controlling the rotation of these eccentric bearings, to separate or bring the blanket closer to the sheet to be printed.

Claims (3)

1. Verfahren zur Korrektur der Schrägstellung in einer Offset Rotationsmaschine bestehend aus mindestens einem Satz eines die Klischeeplatte aufnehmenden Plattenzylinders (5, 6) und eines mit der zu bedruckenden Bahn in Kontakt stehenden Gummituchzylinders (3, 4), Verfahren das einen geringfügigen Ausrichtungsfehler des auf der Platte hergestellten Klischees kompensieren soll, dadurch gekennzeichnet, daß eine Winkelverschiebung der Achse des Gummituchzylinders (3, 4) gegenüber der Achse des Plattenzylinders (5, 6) erfolgt, wobei diese Verschiebung im wesentlichen in einer Ebene senkrecht zu der die beiden parallelen Achsen in der Normalstellung aufweisende Ebene erfolgt.
2. Vorrichtung zur Anwendung des Verfahrens nach Anspruch 1, bei einer Maschine, in der die Zapfen des Gummituchzylinders (3, 4) in Exzenterlager (18, 19, 20, 21) gelagert sind, die zum An- oder Abrücken des Gummituchzylinders an oder von der zu bedruckenden Bahn mit einem Drehantrieb der Exzenterlager verbunden sind, dadurch gekennzeichnet, daß die Exzenterlager (18, 19,20,21) der Gummituchzylinder jeweils in einer Exzenterhülse (24, 25, 26, 27) gelagert sind, die in einer Bohrung des Ständers (1,2) eingeführt ist, und daß bei jedem Gummituchzylinder (3, 4) die jeweils dem einen Zapfen zugeordnete Exzenterhülse in dem Ständer (1) festgestellt ist, während der anderen (25, 27) ein Getriebe (32, 36, 38, 39) zur Steuerung der Drehbewegung zugeordnet ist, wobei die relative Lagen der Zentren der Exzenterteile der Hülse derart bestimmt sind, daß bei der normalen Bewegungsfreiheit die Verschiebung der Zylinderachse einer Bewegung in einer Ebene senkrecht zu der durch die parallelen Achsen der Gummituch- und Plattenzylinder in der normalen Durchschnittsstellung bestimmte Ebene gleichgesetzt werden kann.
3. Offset Rotationsmaschine mit mindestens einem Satz eines die Klischeeplatte aufnehmenden Plattenzylinders (5, 6) und eines mit der zu bedruckenden Bahn in Kontakt stehenden Gummituchzylinders (3, 4), dadurch gekennzeichnet, daß jeder Gummituchzylinder mit einer Winkelverstellvorrichtung nach Anspruch 2 ausgerüstet ist.
EP19810400066 1981-01-19 1981-01-19 Vorrichtung und Verfahren zum diagonalen Einstellen einer Offset-Druckmaschine und Druckmaschine mit dieser Vorrichtung Expired EP0056532B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19810400066 EP0056532B1 (de) 1981-01-19 1981-01-19 Vorrichtung und Verfahren zum diagonalen Einstellen einer Offset-Druckmaschine und Druckmaschine mit dieser Vorrichtung
DE8181400066T DE3165298D1 (en) 1981-01-19 1981-01-19 Method and means for diagonal adjustment in an offset-printing machine, and printing machine produced with said means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19810400066 EP0056532B1 (de) 1981-01-19 1981-01-19 Vorrichtung und Verfahren zum diagonalen Einstellen einer Offset-Druckmaschine und Druckmaschine mit dieser Vorrichtung

Publications (2)

Publication Number Publication Date
EP0056532A1 EP0056532A1 (de) 1982-07-28
EP0056532B1 true EP0056532B1 (de) 1984-08-08

Family

ID=8188497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810400066 Expired EP0056532B1 (de) 1981-01-19 1981-01-19 Vorrichtung und Verfahren zum diagonalen Einstellen einer Offset-Druckmaschine und Druckmaschine mit dieser Vorrichtung

Country Status (2)

Country Link
EP (1) EP0056532B1 (de)
DE (1) DE3165298D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63226689A (ja) * 1986-10-17 1988-09-21 林　顕 発音用振動板

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH382766A (de) * 1959-04-08 1964-10-15 Maschf Augsburg Nuernberg Ag Einrichtung zum Einstellen der Zylinder von Offsetmaschinen
US3817173A (en) * 1971-09-13 1974-06-18 Polygraph Leipzig Diagonal register adjustment of plate cylinder and applicator rolls in a rotary printing machine

Also Published As

Publication number Publication date
EP0056532A1 (de) 1982-07-28
DE3165298D1 (en) 1984-09-13

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