EP0043424A1 - Bogen-Offsetdruckmaschine für Schön- und Widerdruck - Google Patents

Bogen-Offsetdruckmaschine für Schön- und Widerdruck Download PDF

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Publication number
EP0043424A1
EP0043424A1 EP81103675A EP81103675A EP0043424A1 EP 0043424 A1 EP0043424 A1 EP 0043424A1 EP 81103675 A EP81103675 A EP 81103675A EP 81103675 A EP81103675 A EP 81103675A EP 0043424 A1 EP0043424 A1 EP 0043424A1
Authority
EP
European Patent Office
Prior art keywords
sheet
printing
feed drum
cylinder
printing machine
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.)
Ceased
Application number
EP81103675A
Other languages
German (de)
English (en)
French (fr)
Inventor
Harry M. Dr.-Ing. Greiner
Paul Abendroth
Josef Mathes
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6106053&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0043424(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0043424A1 publication Critical patent/EP0043424A1/de
Ceased legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing

Definitions

  • the invention relates to a sheet-fed offset printing machine for face and back printing, in which the printing of the printing sheet takes place between two mutually working blanket cylinders and a first blanket cylinder is provided with grippers, to which the sheets can be fed by a contact device, with an uncontrolled application of ink the sheet is prevented by guide devices arranged in front of the printing zone.
  • a printing press of this type is known for example from DE-PS 543 116.
  • the printing of the printed matter on the front and back takes place simultaneously. Care must be taken to ensure that the end of the sheet, which is not guided by grippers etc., does not come into contact with one of the blanket cylinders before the actual printing zone, because the printed image depicted on the blanket cylinder would then smear on the sheet. Accordingly, it is important in such printing machines to precisely guide the printed matter before printing.
  • DE-PS 341 855 describes a web-fed rotary printing press for face and back printing based on the rubber / rubber principle.
  • the print material is first pressed onto the first rubber cylinder by an additional impression cylinder and printed on one side.
  • the print material then arrives in the printing zone between the two rubber cylinders, the second printing taking place.
  • the front and back are then printed, the lower side actually being printed twice, namely once between the counterpressure and blanket cylinders and x secondly between the two blanket cylinders.
  • the problem with a web-fed rotary printing press is completely different from that with a sheet-fed rotary printing press. In contrast to web presses, the beginning of the sheet. performed and the end of the sheet is fluttering, a considerable amount of additional effort is required with regard to the sheet guidance.
  • guide means are provided which lead the sheet up to the contact zone between the two rubber cylinders.
  • Means are also provided with which the grippers are mounted on the inside of each side wall of the machine independently of the rubber cylinder. This arrangement is intended to ensure that the sheet is guided on a path where premature contact with a rubber cylinder is prevented.
  • the object of the invention is therefore to design a perfecting machine of the type mentioned at the outset with regard to the sheet guide in such a way that premature uncontrolled contact of the printed matter with one of the rubber cylinders is prevented with certainty.
  • This configuration according to the invention has decisive advantages over the known devices. For example the additional sheet guidance in front of the actual printing area is not necessary. This makes the machine less susceptible to faults and more user-friendly, since possible sources of interference are no longer available.
  • FIG. 1 it is a rubber-rubber printing machine to which the printed sheets 9 are fed individually from a feeder stack 1.
  • the individual printing sheets 9 are fed from a pre-gripper 10 to a first feed drum 3, which in turn transfers the printing sheet 9 to a second feed drum 4. From this second feed drum 4, the printing sheet 9 reaches the first rubber cylinder 2.
  • This rubber cylinder is equipped with a gripper system, which ensures the exact fixing of the printing sheet 9, and works with a second rubber cylinder 11 together.
  • the pressure then takes place in the contact zone 12 of both blanket cylinders 2, 11, each blanket cylinder being an impression cylinder of the other blanket cylinder. After passing through the contact point 12 of the two rubber cylinders 2, 11, the sheet is removed from the first rubber cylinder 2 and fed to a delivery stack 13.
  • the second feed drum 4 By using a second feed drum 4 between the first feed drum 3 and the first blanket cylinder 2, sheet guiding is achieved which prevents the printed sheet from smearing.
  • the second feed drum 4 is arranged in relation to the first rubber cylinder 2 in such a way that the printed sheet 9 is only "immovably" spread over the first rubber cylinder 2, i.e. there is no pressure between the second feed drum 4 and the first rubber cylinder 2.
  • the structure of the printing unit corresponds to that of a conventional offset printing unit and is therefore not special.
  • the second feed drum 4 can be adjusted via an eccentric bearing 5 to the rubber cylinder 2.
  • the setting of the second feed drum 4 to the first rubber cylinder 2 depends on the paper thickness to be printed and is also variable in the range up to the thickest printable cardboard.
  • the gripper opening curve 6 is arranged centrally to the second feed drum 4.
  • the eccentric bearing 5 has, in the region in which the gripper opening curve 6 is arranged, a collar 15 rotated centrally with respect to the axis of the feed drum 4.
  • the guide bolts 7 ensure that they rest on the side stand 8.
  • the gripper opening curve 6 can be optimized for a minimal transfer error by means of an eccentric pin 16 arranged in the side stand 8 and engaging in a recess 17 in the gripper opening cam carrier 18. This arrangement allows the grippers 14 to be opened and closed exactly at the predetermined times regardless of the position of the feed drum 4, ie an extremely small tangential error occurs during the transfer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
EP81103675A 1980-06-30 1981-05-13 Bogen-Offsetdruckmaschine für Schön- und Widerdruck Ceased EP0043424A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3024758 1980-06-30
DE19803024758 DE3024758C2 (de) 1980-06-30 1980-06-30 Bogen-Offsetdruckmaschine für Schön- und Widerdruck

Publications (1)

Publication Number Publication Date
EP0043424A1 true EP0043424A1 (de) 1982-01-13

Family

ID=6106053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103675A Ceased EP0043424A1 (de) 1980-06-30 1981-05-13 Bogen-Offsetdruckmaschine für Schön- und Widerdruck

Country Status (3)

Country Link
EP (1) EP0043424A1 (enrdf_load_html_response)
JP (1) JPS5795461A (enrdf_load_html_response)
DE (1) DE3024758C2 (enrdf_load_html_response)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175822A1 (en) * 1984-09-21 1986-04-02 Komori Printing Machinery Co., Ltd. Cylinder apparatus of sheet-fed rotary press
US5732628A (en) * 1994-09-23 1998-03-31 Man Roland Druckmaschinen Ag Sheet-conveying drum for printing machines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4343616B4 (de) * 1993-12-21 2007-05-16 Koenig & Bauer Ag Modulares Druckmaschinensystem

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR930599A (fr) * 1945-07-13 1948-01-29 Harris Seybold Co Perfectionnements relatifs à des presses offset à retiration
DE2228671B2 (de) * 1971-07-22 1976-04-15 Adamovske strojirny, N.P., Adamov (Tsche choslo wakei) Steuervorrichtung fuer die greifer einer uebergabetrommel einer bogen-rotationsdruckmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE543116C (de) * 1930-09-17 1932-02-01 Vogtlaendische Maschinenfabrik Vierzylinder-Rotationsgummidruckmaschine fuer Bogen
GB621144A (en) * 1945-07-13 1949-04-05 Harris Seybold Co Improvements in or relating to a perfecting offset press
DE960994C (de) * 1954-10-15 1957-03-28 Roland Offsetmaschf Bogen-Gummidruckmaschine fuer Schoen- und Widerdruck
DE2217514B1 (de) * 1972-04-12 1973-08-09 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zur bogenstreckung in offset-bogenrotationsdruckmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR930599A (fr) * 1945-07-13 1948-01-29 Harris Seybold Co Perfectionnements relatifs à des presses offset à retiration
DE2228671B2 (de) * 1971-07-22 1976-04-15 Adamovske strojirny, N.P., Adamov (Tsche choslo wakei) Steuervorrichtung fuer die greifer einer uebergabetrommel einer bogen-rotationsdruckmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175822A1 (en) * 1984-09-21 1986-04-02 Komori Printing Machinery Co., Ltd. Cylinder apparatus of sheet-fed rotary press
US5732628A (en) * 1994-09-23 1998-03-31 Man Roland Druckmaschinen Ag Sheet-conveying drum for printing machines

Also Published As

Publication number Publication date
DE3024758A1 (de) 1982-01-28
JPS5795461A (en) 1982-06-14
DE3024758C2 (de) 1985-02-21
JPS6356070B2 (enrdf_load_html_response) 1988-11-07

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19811228

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19840726

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MATHES, JOSEF

Inventor name: GREINER, HARRY M., DR.-ING.

Inventor name: ABENDROTH, PAUL