EP0423093A2 - Verfahren und Anordnung zum Reinigen von Führungsrollen - Google Patents

Verfahren und Anordnung zum Reinigen von Führungsrollen Download PDF

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Publication number
EP0423093A2
EP0423093A2 EP90850330A EP90850330A EP0423093A2 EP 0423093 A2 EP0423093 A2 EP 0423093A2 EP 90850330 A EP90850330 A EP 90850330A EP 90850330 A EP90850330 A EP 90850330A EP 0423093 A2 EP0423093 A2 EP 0423093A2
Authority
EP
European Patent Office
Prior art keywords
paper web
guide rollers
printing
rollers
web
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.)
Granted
Application number
EP90850330A
Other languages
English (en)
French (fr)
Other versions
EP0423093A3 (en
EP0423093B1 (de
Inventor
Birger Hansson
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.)
Jimek International AB
Original Assignee
Jimek International AB
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 Jimek International AB filed Critical Jimek International AB
Publication of EP0423093A2 publication Critical patent/EP0423093A2/de
Publication of EP0423093A3 publication Critical patent/EP0423093A3/en
Application granted granted Critical
Publication of EP0423093B1 publication Critical patent/EP0423093B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/007—Cleaning arrangements or devices for supports of workpieces

Definitions

  • the present invention relates to a method and an arran­gement for cleaning the guide rollers of printing presses.
  • the web of printing paper passes from a feed roller, through the printing machine in which the paper is printed on one or both sides thereof, and thereafter, when printing is com­pleted, over one or more guide rollers to a paper-­folding mechanism where the printed paper web is cut and folded.
  • the guide rollers are either freely rotat­ing or motor-driven for rotation. Several tens of such rollers may be provided for guiding each paper web between the printing machine and the folding mechanism.
  • a cleaning unit of the aforedescribed kind is much too bulky and expensive for use in cleaning relatively small and relatively many guide rollers. Furthermore, in the majority of cases, the use of such a cleaning unit requires, the paper web to be removed from the guide rollers.
  • the invention provides, instead, a method and an arran­gement for cleaning guide rollers which circumvents the aforesaid problem and with the aid of which guide roll­ers can be cleaned much more quickly, more positively, and more effectively than with prior known methods and arrangements, without needing to remove the paper web.
  • a paper web 2 is advanced from the printing machine 1 past a spray device 3 which is equipped with one or more nozzles, of which only two 4,5 are shown, and which is operative to spray a cleansing agent 6 onto the paper web 2.
  • the spray device may alternatively be positioned adjacent a part of the paper web 2 located before the printing machine 1.
  • the cleaning agent 6 consists of a substance which will not weaken the paper web 2, and may, for instance, consist of a mineral-oil fraction which constitutes a solvent for a number of printing inks.
  • the cleaning device When the paper web 2 has a narrow width, the cleaning device operates with sole­ly one nozzle 4, 5. When the web has a wide width, the cleaning device operates with several nozzles 4,5.
  • the nozzles 4,5 are fixedly mounted on a piston rod 8. In operation, the nozzles 4,5 will be held constantly at a mutual distance apart. An advantage is afforded, however, when nozzle spacing can be changed when spray­ing is not being carried out.
  • the nozzles 4,5 can either have fixed positions in relation to the spraying device 3, or can be moved forwards and backwards, either intermittently or continuously along substantially the whole length of the spray device 3 in different ways, with the aid of the piston rod 8.
  • the paper web 2 is sprayed along a length thereof adapted to the respective cylindrical surfaces of the down­stream guide rollers, to the number of said rollers present and to the extent to which the rollers are soiled. Spraying is effected while the piston rod 8 moves the nozzles 4,5, continuously backwards and for­wards along the spraying device 3.
  • the sprayed regions of the paper web 2 will therefore have a sinusoidal configuration as indicated at 9 and 10.
  • the rollers are successively braked pulsewise, so that the tangential speed of the rollers will differ from the speed of the paper web 2 during application of the braking pulses.
  • the best effect is achieved when the rotational speed of the rollers 11 is braked so that the rollers 11 are brought pulsewise to a complete standstill.
  • the aforesaid pulses are pre­ferably of variable duration adapted to the desired cleaning effect.
  • the guide rollers 11 can be displaced forwards and backwards continuously while in contact with the spray­ed part of the web 2, in a direction perpendicular to the direction of movement of the web 2.
  • the cleaning agent 6 is transferred to the rollers 11 by virtue of the sinusoidal configuration of the spray­ed regions, in a manner such that a part of the ink on the rollers 11 moistened by the cleanin agent or sol­vent 6 will be wiped-off, almost immediately, by a non-­moistened part of said web.
  • This enables printing ink on the guide rollers 11 to be moistened and wiped-off in one single step and with the least possible paper consumption.
  • the paper web 2 is, instead, sprayed with the nozzles 4,5 placed in fixed positions relative to the spray device 3, where­with the paper web 2 is saturated with cleaning agent 6 substantially across the whole width of said web.
  • the guide rollers 11 are first moistened with cleaning agent 6 and are then wiped clean by a following non-sprayed part of the web 2 in a separate step.
  • Braking of the guide rollers 11, preferably so that the rollers are brought to a complete stop is controlled in the case of the first embodiment preferably in a pulse-wise fashion and only when the guide rollers 11 are in contact with sprayed paper 2, and in the case of the second embodiment also during subsequent wiping of the rollers with non-sprayed parts of the web 2, and such that at most the number of guide rollers 11 braked simultaneously, preferably to a complete stop, will not exceed the number at which the paper web 2 will rupture.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP19900850330 1989-10-10 1990-10-09 Verfahren und Anordnung zum Reinigen von Führungsrollen Expired - Lifetime EP0423093B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8903330 1989-10-10
SE8903330A SE8903330L (sv) 1989-10-10 1989-10-10 Foerfarande och anordning foer rengoering av brytrullar

Publications (3)

Publication Number Publication Date
EP0423093A2 true EP0423093A2 (de) 1991-04-17
EP0423093A3 EP0423093A3 (en) 1991-07-03
EP0423093B1 EP0423093B1 (de) 1994-03-23

Family

ID=20377105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900850330 Expired - Lifetime EP0423093B1 (de) 1989-10-10 1990-10-09 Verfahren und Anordnung zum Reinigen von Führungsrollen

Country Status (4)

Country Link
EP (1) EP0423093B1 (de)
JP (1) JPH03128249A (de)
DE (1) DE69007582T2 (de)
SE (1) SE8903330L (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654350A1 (de) * 1993-11-12 1995-05-24 Oxy-Dry Maschinen GmbH Verfahren zur vollautomatischen Zylinderreinigung bei Druckmaschinen mit zentralem Leitsystem
EP0618074B1 (de) * 1993-01-20 1997-03-12 Baldwin-Gegenheimer GmbH Druckmaschinen-Sprühvorrichtung
EP0816078A3 (de) * 1996-07-05 1998-06-24 Jimek Ab Verfahren und Vorrichtung zum Reinigen von Führungswalzen in einerDruckmaschine
EP0816080A3 (de) * 1996-07-03 1998-06-24 Jimek Ab Verfahren und Vorrichtung zum Reinigen eines Gummituchzylinders in einer Druckmachine
WO1998052760A1 (de) * 1997-05-21 1998-11-26 Koenig & Bauer Aktiengesellschaft Verfahren und vorrichtung zum reinigen von leitwalzen in einer rollenrotationsdruckmaschine
WO2008006757A3 (en) * 2006-07-11 2008-04-17 Finelettra Internat S A Device for cleaning the idler rolls of paper webs in rotary printing presses

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508711A (en) * 1967-12-29 1970-04-28 Ryco Graphic Mfg Fluid dispensing system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0618074B1 (de) * 1993-01-20 1997-03-12 Baldwin-Gegenheimer GmbH Druckmaschinen-Sprühvorrichtung
EP0654350A1 (de) * 1993-11-12 1995-05-24 Oxy-Dry Maschinen GmbH Verfahren zur vollautomatischen Zylinderreinigung bei Druckmaschinen mit zentralem Leitsystem
US6109182A (en) * 1993-11-12 2000-08-29 Oxy-Dry Maschinen Gmbh Procedure for fully automatic cylinder cleaning in printing presses having a central control system
EP0816080A3 (de) * 1996-07-03 1998-06-24 Jimek Ab Verfahren und Vorrichtung zum Reinigen eines Gummituchzylinders in einer Druckmachine
EP0816078A3 (de) * 1996-07-05 1998-06-24 Jimek Ab Verfahren und Vorrichtung zum Reinigen von Führungswalzen in einerDruckmaschine
WO1998052760A1 (de) * 1997-05-21 1998-11-26 Koenig & Bauer Aktiengesellschaft Verfahren und vorrichtung zum reinigen von leitwalzen in einer rollenrotationsdruckmaschine
US6332929B1 (en) 1997-05-21 2001-12-25 Koenig & Bauer Aktiengesellschaft Method and device for cleaning guide rollers in a web-fed rotary press
WO2008006757A3 (en) * 2006-07-11 2008-04-17 Finelettra Internat S A Device for cleaning the idler rolls of paper webs in rotary printing presses

Also Published As

Publication number Publication date
DE69007582T2 (de) 1994-10-20
EP0423093A3 (en) 1991-07-03
SE8903330D0 (sv) 1989-10-10
JPH03128249A (ja) 1991-05-31
EP0423093B1 (de) 1994-03-23
DE69007582D1 (de) 1994-04-28
SE8903330L (sv) 1991-04-11

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