EP0119537A2 - Dispositif de capture d'une bande de papier - Google Patents

Dispositif de capture d'une bande de papier Download PDF

Info

Publication number
EP0119537A2
EP0119537A2 EP84102352A EP84102352A EP0119537A2 EP 0119537 A2 EP0119537 A2 EP 0119537A2 EP 84102352 A EP84102352 A EP 84102352A EP 84102352 A EP84102352 A EP 84102352A EP 0119537 A2 EP0119537 A2 EP 0119537A2
Authority
EP
European Patent Office
Prior art keywords
web
cylinders
printing
cylinder
rollers
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
EP84102352A
Other languages
German (de)
English (en)
Other versions
EP0119537A3 (fr
Inventor
Hermann Fischer
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=6193741&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0119537(A2) "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 EP0119537A2 publication Critical patent/EP0119537A2/fr
Publication of EP0119537A3 publication Critical patent/EP0119537A3/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/18—Web break detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/20—Safety devices preventing damage

Definitions

  • the invention relates to a device for preventing printing unit damage in the case of web breaks within web-fed rotary printing presses with two rollers or cylinders which are arranged on both sides of the web and are driven at approximately machine speed and which are spring-loaded against one another when the torn web carrier is wound up.
  • the disadvantage of this known catching device is that a certain response time elapses between the detection of a web break and the detection of the broken web by the catching rollers, since the catching rollers have to be moved together, that is to say they have to be set against one another, which is natural takes a certain amount of time.
  • the catch rollers have moved apart in trouble-free operation (normal operation) in order to avoid undesired lubrication of the freshly printed web, which in turn has the further disadvantage that these catch rollers cannot perform any function during normal operation.
  • the object of the invention is to develop a device of the type defined at the outset in such a way that catch rollers take effect immediately without any delay when a print carrier web tear occurs, and that these can take on additional functions during trouble-free operation, with disruptive lubrication of the freshly printed web should not occur.
  • the main advantages of the paper web catching device according to the invention are that, due to the constant contact of the catching rollers or cylinders covered with rubber blankets, they perform a printing enhancement function during normal operation, since after a few revolutions the rubber blankets color according to the printed image, so that the cleavage back Color according to the print images from the rubber blankets of the catch rollers onto the print carrier web is possible.
  • irregularities in ink coverage during successive cylinder revolutions, which can occur in the printing units are compensated for, that is, equalized, by the catch rollers or by cylinders provided with rubber blankets.
  • the diameter or the drive speeds of the blanket-bearing catch cylinders are set so that the surface speed thereof is slightly greater than the surface speed of the impression cylinders, whereby the catch cylinders also occur during normal operation, which usually occurs at the rear printing units Raise the paper tension and make it even across the entire press.
  • the catch rollers also act as a "pull-out mechanism" in contrast to the generally known "pull-in mechanism".
  • the offset rotary printing machine shown in Fig.1 comprises four printing units 1, 2, 3 and 4 of the so-called "rubber cylinder - against - rubber cylinder construction" (perfect and reverse printing), each with two rubber cylinders 5 and two plate cylinders 6, a roller star 7 and a dryer 8 connected downstream of the printing units 1 to 4, a cooling unit 9 and a web tension monitoring device 10.
  • a folder 11 is arranged downstream of the cooling unit 9.
  • the paper web catching device 12 is preferably arranged behind the last printing unit 4, but before the dryer 8.
  • the paper web catching device 12 comprises two cylinders 14, 15 arranged on both sides of the paper web 13 and serving as catch rollers.
  • the cylinders 14, 15 are each provided with a color-friendly coating, e.g. a rubber blanket 16 and 17, respectively, which are stretched over them in a manner similar to the rubber blankets used in offset machines with the aid of clamping means arranged in pits.
  • the cylinders 14, 15 serving as catch rollers can thus have the same structure and the same size as the rubber cylinders 5 used in the printing units.
  • the Zvlinder 14, 15 are in constant contact with the paper web 13. They are resiliently against each other.
  • the surface speed of the cylinders 14, 15 should preferably be somewhat greater in the per mille range than the surface speed of the printing unit cylinders 5 and 6, as a result of which the cylinders 14, 15 can additionally exert a tensile effect on the paper web 13 during normal operation, which increases the value in this area and thus contributes to an equalization of the paper web tension in the entire printing press. This is possible, for example, by means of a corresponding support under the printing blankets 16, 17, so that the effective diameter thereof becomes larger or by a slightly increased drive speed.
  • the somewhat increased surface speed of the cylinders 14, 15 must be set in such a way that no visible smearing occurs as a result of the slip occurring on the print carrier web 13 as a result.
  • the lower printing unit cylinder 14 can be mounted stationary in the usual way, for example in a conventional eccentric bearing, while the upper cylinder 15 is pressed resiliently against the lower printing unit cylinder by means of a pneumatic cylinder 18.
  • a pneumatic cylinder 18 the torn paper web 13 can wind up either on the cylinder 14 or on the cylinder 15 and due to the enlargement of the cylinder diameter resulting from the winding process, the cylinder 15 will dodge, so that no damage to the cylinders 14, 15 and their Stock can occur.
  • the journal 19 of the cylinder 15 can e.g. be mounted in sliders 20 which can be moved in guides 21 in the side walls 22 by pneumatic cylinders,
  • the paper web catching device thus fulfills two other functions in addition to its catching function when web breaks occur during trouble-free operation (normal operation), namely a refinement of the print, which is particularly noticeable when the paper web catching device is used in high-pressure machines, and the lifting, i.e. Improvement or equalization of the web tension, which has an effect particularly when the paper web catching device is used behind the last printing unit.
  • Both the rubber cylinders of the printing units 1 to 4 and the cylinders 14, 15 should in practice be arranged differently from the vertical, so that there is a slight wrapping of the cylinders through the web.
  • the print carrier web 13 is printed on both sides.
  • both cylinders 14, 15 are provided with blankets 16, 17.
  • the paper web catching device according to the invention is used in machines in which a print carrier web can only be printed on one side, it is sufficient if only the cylinder coming into contact with the printed side of the print carrier web is covered with a rubber blanket. In this case, only this cylinder must have approximately the same diameter as the printing unit cylinder.
  • the paper web catching device according to the invention can be used both in printing machines for indirect printing (offset printing or indirect letterpress printing) and in machines for direct printing (letterpress printing, flexographic printing, gravure printing).
  • the trap rollers can also be equipped with bearer rings in order to prevent the trap cylinders from collapsing during passage through the duct, which, as is known, can cause undesirable vibrations when the cylinders meet.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP84102352A 1983-03-17 1984-03-05 Dispositif de capture d'une bande de papier Ceased EP0119537A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3309558A DE3309558C2 (de) 1983-03-17 1983-03-17 Bedruckstoffbahnfangvorrichtung
DE3309558 1983-03-17

Publications (2)

Publication Number Publication Date
EP0119537A2 true EP0119537A2 (fr) 1984-09-26
EP0119537A3 EP0119537A3 (fr) 1986-06-04

Family

ID=6193741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102352A Ceased EP0119537A3 (fr) 1983-03-17 1984-03-05 Dispositif de capture d'une bande de papier

Country Status (4)

Country Link
US (1) US4508033A (fr)
EP (1) EP0119537A3 (fr)
JP (1) JPS59184657A (fr)
DE (1) DE3309558C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658114A1 (fr) * 1990-02-15 1991-08-16 Dornier Gmbh Lindauer Dispositif de protection de cylindres d'etirage d'une installation d'etirage longitudinal, en particulier pour materiaux thermoplastiques.
EP0502237A1 (fr) * 1991-02-28 1992-09-09 Seiji Kagawa Appareil pour fabrication de films poreux
US5352108A (en) * 1991-10-18 1994-10-04 Norito Sudo Porous film and porous film manufacturing apparatus
EP0743183A3 (fr) * 1995-05-19 1997-10-01 Wifag Maschf Dispositif de retenue d'une bande en mouvement dans une machine d'impression rotative

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785734A (en) * 1986-11-04 1988-11-22 Fuji Kikai Kogyo Co., Ltd. Apparatus for controlling paper transfer speed of a printing section of a form printing machine
DD255913A1 (de) * 1986-11-10 1988-04-20 Polygraph Leipzig Sicherheitsvorrichtung zum reagieren auf bahnrisse, insbes. fuer rollenrotations-offsetdruckmaschinen
US4961378A (en) * 1987-05-27 1990-10-09 Rockwell International Corporation Anti-wrap up device for web fed printing presses
US4846060A (en) * 1988-07-25 1989-07-11 Iotec Manufacturing, Inc. Printing web tensioning system
DE3910556C1 (fr) * 1989-04-01 1990-10-11 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
JPH0323439U (fr) * 1989-07-17 1991-03-12
DE4029366C2 (de) * 1990-09-15 1995-07-06 Kotterer Grafotec Vorrichtung zum Fangen und Halten einer gerissenen Bedruckstoffbahn
DE4039108C1 (fr) * 1990-12-07 1992-04-16 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
US5678484A (en) * 1993-03-25 1997-10-21 Baldwin Web Controls Anti-wrap device for a web press
US6298782B1 (en) 1993-03-25 2001-10-09 Baldwin Web Controls Anti-wrap device for a web press
US5398610A (en) * 1993-03-25 1995-03-21 Baldwin Web Controls Anti-wrap device for a web press
DE4339766C1 (de) * 1993-11-23 1995-02-09 Koenig & Bauer Ag Vorrichtung zum Verhindern von Schäden bei Rissen von Warenbahnen
DE19645799A1 (de) * 1996-11-07 1998-05-20 Roland Man Druckmasch Papierbahnfangvorrichtung
DE10311234A1 (de) * 2003-03-14 2004-09-23 Heidelberger Druckmaschinen Ag Bedruckstoffbahn verarbeitende Maschine
DE102011004642B4 (de) * 2011-02-24 2014-07-31 Koenig & Bauer Aktiengesellschaft Zugwalzenanordnung mit einer Zugwalze und wenigstens zwei in axialer Richtung der Zugwalze versetzt angeordneten und gegen die Zugwalze anstellbaren Zugringen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE558071C (de) * 1932-09-02 Fallert & Co A G Papierbahnfuehrung, insbesondere fuer Rotationsdruckmaschinen
US1688967A (en) * 1928-10-23 Printing machine
US870210A (en) * 1903-12-28 1907-11-05 Campbell Printing Press & Mfg Rotary web-perfecting printing-machine.
US3404627A (en) * 1967-01-19 1968-10-08 John W. Halley Web severing device for offset printing press
SE382181B (sv) * 1971-11-13 1976-01-19 Maschf Augsburg Nuernberg Ag Anordning vid rullrotationstryckmaskin for att forhindra tryckverksskador vid pappersbanans avslitning
DE3130525C2 (de) * 1981-08-01 1985-04-04 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Rotationshochdruckmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658114A1 (fr) * 1990-02-15 1991-08-16 Dornier Gmbh Lindauer Dispositif de protection de cylindres d'etirage d'une installation d'etirage longitudinal, en particulier pour materiaux thermoplastiques.
EP0502237A1 (fr) * 1991-02-28 1992-09-09 Seiji Kagawa Appareil pour fabrication de films poreux
US5257923A (en) * 1991-02-28 1993-11-02 Norito Sudo Porous film manufacturing apparatus
US5415538A (en) * 1991-02-28 1995-05-16 Seiji Kagawa Porous film manufacturing apparatus
US5352108A (en) * 1991-10-18 1994-10-04 Norito Sudo Porous film and porous film manufacturing apparatus
EP0743183A3 (fr) * 1995-05-19 1997-10-01 Wifag Maschf Dispositif de retenue d'une bande en mouvement dans une machine d'impression rotative

Also Published As

Publication number Publication date
DE3309558C2 (de) 1985-04-18
JPS59184657A (ja) 1984-10-20
EP0119537A3 (fr) 1986-06-04
DE3309558A1 (de) 1984-09-20
US4508033A (en) 1985-04-02

Similar Documents

Publication Publication Date Title
EP0119537A2 (fr) Dispositif de capture d'une bande de papier
DE2649052C2 (de) Vorrichtung zum Ausschalten des Lagerspiels an Druckzylindern von Druckmaschinen, insbesondere Rotationsoffsetdruckmaschinen
EP0078444A1 (fr) Dispositif d'encrage pour machines à imprimer offset
EP0092659A1 (fr) Dispositif pour saisir des bandes de papier
DE3917340A1 (de) Offset-rotationsmaschine
DE19648494C2 (de) Drucktuch für Offsetdruck
DE3640295C2 (de) Verfahren zur Vermeidung des Überfärbens von Farbwerken an Druckmaschinen
DE3905400A1 (de) Vorrichtung zur veraenderung der bahnlage einer bedruckstoffbahn
EP0110166B1 (fr) Machine rotative d'impression de bandes
DE69816705T2 (de) Muffenförmiges Drucktuch sowie Druckmaschine unter Verwendung desselben
DE2613688C2 (de) Gummituchzylinder für eine Bogen-Rotationsoffsetdruckmaschine
DE19645799A1 (de) Papierbahnfangvorrichtung
DE3125434A1 (de) Vorrichtung zum zufuehren von farbe an die druckplatte einer druckmaschine
EP0995596B1 (fr) Dispositif et procédé pour la mise en oeuvre d'un changement de plaques en marche
DE3705194A1 (de) Farbwerk
DE69701764T2 (de) Verfahren zum Aufspannen eines Gummituchs für eine Rotationsdruckmaschine
DE10232109A1 (de) Offsetdruckwerk und Offsetdruckverfahren
DE8224875U1 (de) Farbwerk für Offsetdruckmaschinen
DE3211454C2 (de) Rollenrotationsdruckmaschine für Endlosdruck
DE4138277C2 (de) Verfahren und Vorrichtung zum abschmierfreien Stanzen, Rillen und Perforieren
DE202010006049U1 (de) Rollendruckmaschine
DE102019120263A1 (de) Druckwerk einer Rotationsdruckmaschine
DE3901175C2 (de) Druckmaschine für Schön- oder Schön- und Widerdruck
DE19755317A1 (de) Bahnführungswalze
DE102016109948A1 (de) Separierter Antrieb von Walzen eines Farbwerkes in Koppelung mit einer dynamischen Farbgebungskorrektur

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): CH DE FR GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

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

17P Request for examination filed

Effective date: 19860424

17Q First examination report despatched

Effective date: 19870731

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: 19890304

APAF Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNE

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FISCHER, HERMANN