EP0279295B1 - Unité d'encrage - Google Patents

Unité d'encrage Download PDF

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Publication number
EP0279295B1
EP0279295B1 EP88101651A EP88101651A EP0279295B1 EP 0279295 B1 EP0279295 B1 EP 0279295B1 EP 88101651 A EP88101651 A EP 88101651A EP 88101651 A EP88101651 A EP 88101651A EP 0279295 B1 EP0279295 B1 EP 0279295B1
Authority
EP
European Patent Office
Prior art keywords
blanket
inking unit
width
cylinder
short inking
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 - Lifetime
Application number
EP88101651A
Other languages
German (de)
English (en)
Other versions
EP0279295A3 (en
EP0279295A2 (fr
Inventor
Hans-Peter Jungwirth
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.)
Albert Frankenthal AG
Original Assignee
Albert Frankenthal 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 Albert Frankenthal AG filed Critical Albert Frankenthal AG
Publication of EP0279295A2 publication Critical patent/EP0279295A2/fr
Publication of EP0279295A3 publication Critical patent/EP0279295A3/de
Application granted granted Critical
Publication of EP0279295B1 publication Critical patent/EP0279295B1/fr
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
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/10—Applications of feed or duct rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/06—Shells for rollers of printing machines for inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds

Definitions

  • the invention relates to a short inking unit of the type specified in the preamble of claim 1.
  • the previously desired, large width of the printing strip between the application roller and plate cylinder can result in uncontrollable shear forces acting on the ink, which can have a negative effect on the inking of the printing form.
  • a soft rubber blanket has a tendency to swell, so that there are relative speeds and development errors between the application roller and plate cylinder, which leads to increased wear of the printing form and to the risk of stenciling.
  • BE-A 557 069 shows a long inking unit with an application roller, the diameter of which corresponds to the diameter of the printing form to be inked and which is provided with an elastic cover, the ends of which are fixed on the flanks of an axially parallel roller channel.
  • this prior publication does not contain any useful teaching for eliminating the disadvantages of the generic prior art.
  • DE-A 20 12 649 shows a sleeve made of elastomeric, kneadable polyurethane for an application roller.
  • This sleeve should have a thickness of 1.25mm and a hardness of 60 ° or 62 ° shore.
  • This prior publication also does not contain any useful information for avoiding the disadvantages of the generic prior art, especially since there is no sleeve, but rather a rubber blanket to be used.
  • any changes in diameter of the applicator roller and the stress on the printing form from the applicator roller are no greater than the tolerable changes in diameter of the blanket cylinder and the tolerable stresses on the printing form from the rubber blanket cylinder, thus ensuring gentle operation and effectively preventing stenciling.
  • FIG. 1 The arrangement on which FIG. 1 is based consists, in a manner known per se, of two rolls which roll on one another and which press the web of paper 1 passed between them, each covered with a blanket cylinder 2 on its circumference, each with a plate cylinder 3 on which hard printing plates in the form of Metal plates are clamped together.
  • the printing plates accommodated on the plate cylinder 3 are held at their ends by clamping devices arranged in the circumferentially arranged cylinder pits 4.
  • the cylinder pits 4 of the blanket cylinder 2 and plate cylinder 3 are arranged so that they pass through the cylinder contact area roll on each other.
  • the inking of the printing plates accommodated on the plate cylinder 3 takes place by means of an application roller 5 which rolls on the plate cylinder 3 at the same peripheral speed.
  • the diameter of the application roller 5 corresponds to the diameter of the plate cylinder 3, which here also corresponds to the diameter of the rubber cylinder 2.
  • the application roller 5 is supplied with ink by an anilox roller 7 which interacts with a doctor blade 6.
  • the anilox roller 7 can be dyed in any way and is immersed in an ink fountain 8 in the illustrated embodiment.
  • the axial orientation and the width of the rubber blankets 10a correspond to the axial orientation and width of the printing plates accommodated on the plate cylinder 3.
  • the rubber blankets 10a are glued to the steel jacket 9.
  • rubber blankets provided with a self-adhesive coating, which is covered with a removable protective film can be used. These can simply be stuck on by pulling off the protective film, to achieve a certain contact pressure a placement of the applicator roller 5 on the plate cylinder 3 and a slow cylinder rotation, for example with the help of the washing drive, can take place.
  • the blankets 10a which can be fixed on the circumference of the application roller 5 consist of a textile backing layer with a rubber-elastic overlay.
  • the total thickness of the rubber blankets 10a can be 1.5 mm to 4.5 mm and is 2.5 mm in the exemplary embodiment shown.
  • the hardness of the rubber blankets 10a can be 60 ° to 80 °, preferably 65 ° - 70 ° Shore and is 68 ° Shore in the exemplary embodiment shown.
  • Such a rubber blanket is also suitable for transferring the color to the paper web 1.
  • the rubber cylinders 2 are accordingly covered with a rubber blanket of the same thickness and hardness as the rubber blankets 10a of the applicator roller 5.
  • the ends of the rubber blankets 10a received on the applicator roller 5 are clamped between two clamping surfaces to secure them against tearing and crushing.
  • This can be the clamping surfaces of a clamping device.
  • the ends of the rubber blankets 10a lie on the outwardly converging flanks of an associated circumferential channel 11 of the application roller 5 and are secured by a retaining strip 12 which overlaps them in the region of the circumferential channel 5 and which the flanks of the circumferential channel 11 has parallel flanks, so that mutually parallel clamping surfaces result, between which the ends of the rubber blankets 10a can be clamped.
  • the retaining strips 12 have a trapezoidal shape Cross-section with flat, mutually parallel peripheral surfaces and side surfaces converging towards the outside.
  • the length of the holding strips 12 corresponds, as can be seen in FIG. 2, to the width of the respectively associated rubber blanket 10a, so that each rubber blanket 10a is assigned its own holding strip 12.
  • the holding strips 12 can be clamped by means of a quick release device.
  • the holding strips 12 are simply secured by holding screws 13 which are uniformly distributed over their length and which engage in the steel base 9 and whose head, as FIG. 3 further shows, is countersunk in relation to the outer surface of the associated holding strip 12 arranged radially within the effective roller circumference.
  • the length of the rubber blankets 10a corresponds to the circumference of the applicator roller 5.
  • the opposite ends of the rubber blankets 10a accordingly engage in the same circumferential channel 11.
  • four rubber blankets 10a arranged next to one another are provided over the length of the applicator roller 5 and are offset in pairs by 180 °, so that two are in the axial direction by their length and circumferentially by 180 ° offset circumferential channels 11 result.
  • the application roller 5 is set relative to the plate cylinder 3 that the circumferential channels 11 roll through the nip between applicator roller 5 and plate cylinder 3 on the cylinder pits 4 of the plate cylinder 3 and outside the cylinder pits 4 there is a reliable inking of the printing plates.
  • the maximum width of the circumferential channels 11 is smaller than or at most the same size as the clear width of the cylinder pits 4 of the plate cylinder 3.
  • the rubber blankets arranged next to one another as can also be seen in FIG , so that there are groove-shaped recesses 14 between adjacent rubber blankets 10a, which allow the application roller 5 to be acted on with different colors.
  • two stop pins 15 are shown in FIG. 3 in the region of the flank of the circumferential channels 11 receiving the blanket start for each associated blanket, ie per printing plate width, offset with respect to one another in the axial direction intended.
  • the axial distance between the stop pins 15 belonging together in pairs can be dimensioned such that the respectively associated rubber blanket 10a rests with its side flanks on the stop pins 15. In the illustrated embodiment, this is intended The distance should be a little smaller than the blanket width. Accordingly, as indicated in FIG.
  • the rubber blankets 10a are provided in the region of their leading edge with recesses 16 formed here by punched holes, the spacing and clear width of which corresponds to the spacing and the diameter of the associated stop pins 15.
  • the rubber blankets 10a When the rubber blankets 10a are stuck on, they can accordingly be suspended with their recesses 16 on the stop pins 15 provided on the roller side, which automatically results in the desired right-angled orientation.
  • the length of the stop pins 15 is dimensioned such that they protrude from the respectively assigned rubber blanket 10a with a safety distance, which facilitates handling.

Landscapes

  • Printing Plates And Materials Therefor (AREA)

Claims (8)

  1. Unité d'encrage, pour un cylindre porte-plaque (3) et un cylindre porte-blanchet (2), coopérant avec lui, transmettant sur le produit à imprimer l'image du cliché, avec une machine à impression offset présentant un blanchet, avec un rouleau toucheur (5), disposé entre un rouleau de trame et un cylindre porte-plaque garnie de clichés durs et tournant à la même vitesse que le cliché, rouleau toucheur (5) pourvu d'une enveloppe en caoutchouc (10) formée d'au moins un blanchet (10a) appliqué sur une base en acier (9), de préférence par collage, et présentant un diamètre correspondant au diamètre efficace du cliché, caractérisée en ce que chaque blanchet (10a) supporté par le rouleau toucheur (5) correspond, quant à son épaisseur, qui est de 1,5 à 4,5 mm et sa dureté qui est de 60 degrés à 80 degrés Shore, au blanchet du rouleau toucheur (2), qui transmet l'image du cliché sur le produit à imprimer (1), du cylindre porte-blanchet (2), et en ce que le rouleau toucheur (5) présente au moins un canal périphérique (11) qui s'étend parallèlement à l'axe et dans lequel s'engagent les extrémités de chaque blanchet (10a), extrémités entourées et saisies par une bande de maintien (12) associée, susceptible d'être introduite dans le canal périphérique (11), dont la largeur en périphérie correspond au maximum à la largeur circonférentielle d'un fond de cylindre (4), se déroulant par dessus, du cylindre (3) recevant le cliché.
  2. Unité d'encrage selon la revendication 1, caractérisée en ce que chaque bande de maintien (12) présente des flancs parallèles aux flancs, de préférence convergeant vers l'intérieur, de chaque canal périphérique (11) associé.
  3. Unité d'encrage selon l'une des revendications précédentes, caractérisée en ce que chaque bande de maintien (12) est susceptible d'être fixée au moyen de vis de maintien (13) noyées.
  4. Unité d'encrage selon l'une des revendications précédentes, caractérisée en ce que, dans la zone d'un flanc de chaque canal périphérique (11), est prévu par blanchet (10a) associé deux tiges de butée (15), dont l'espacement en direction axiale est inférieur à la largeur du blanchet (10a) associé, où chaque blanchet (10) présente dans la zone de son arête avant deux évidements (16), formés de préférence par des trous obtenus par estampage, dont l'espacement correspond à la distance entre les tiges de butée (15) venant s'y engager et en ce que chaque bande de maintien (12) présente un évidement (17) dans la zone des tiges de butée (15).
  5. Unité d'encrage selon l'une des revendications précédentes, caractérisée en ce que plusieurs blanchets (10a) sont disposées, les uns à côté des autres, sur la longueur du rouleau encreur (5), leur largeur correspondant de préférence à peu près à la largeur de chaque cliché associé.
  6. Unité d'encrage selon l'une des revendications précédentes, caractérisée en ce que chaque bande de maintien (12) présente une longueur correspondant à la largeur du blanchet (10a) lui étant associé.
  7. Unité d'encrage selon l'une des revendications précédentes, caractérisée en ce que les blanchets (10a) disposés les uns à côté des autres sont espacés les uns à côtés des autres.
  8. Unité d'encrage selon l'une des revendications précédentes, caractérisée en ce que les blanchets (10a) disposés les uns à côté des autres sont décalés les uns par rapport aux autres, par couples, d'un angle de 180 degrés.
EP88101651A 1987-02-19 1988-02-04 Unité d'encrage Expired - Lifetime EP0279295B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3705194 1987-02-19
DE19873705194 DE3705194A1 (de) 1987-02-19 1987-02-19 Farbwerk

Publications (3)

Publication Number Publication Date
EP0279295A2 EP0279295A2 (fr) 1988-08-24
EP0279295A3 EP0279295A3 (en) 1990-02-14
EP0279295B1 true EP0279295B1 (fr) 1992-12-02

Family

ID=6321273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101651A Expired - Lifetime EP0279295B1 (fr) 1987-02-19 1988-02-04 Unité d'encrage

Country Status (2)

Country Link
EP (1) EP0279295B1 (fr)
DE (2) DE3705194A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806227A3 (fr) * 2006-01-09 2011-01-19 Koenig & Bauer AG Couple d'impression et unité d'impression d'une machine pouvant imprimer une largeur de six pages de journal

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8908243U1 (de) * 1989-07-06 1989-08-17 MAN Roland Druckmaschinen AG, 6050 Offenbach Offsetdruckwerk
DE59009335D1 (de) * 1989-11-18 1995-08-03 Roland Man Druckmasch Verfahren zur Druckvorbereitung eines Druckwerks und dazu verwendbares Druckwerk.
DE9310713U1 (de) * 1993-07-17 1993-09-02 Man Roland Druckmaschinen Ag, 63069 Offenbach Farbauftragwalze
DE59804063D1 (de) 1997-06-03 2002-06-13 Koenig & Bauer Ag Walze mit einem gummibelag
US6098540A (en) * 1998-08-10 2000-08-08 Heidelberger Druckmaschinen Ag Apparatus and method for reducing mottling in printing presses
DE102004011881B3 (de) * 2004-03-11 2005-05-19 Koenig & Bauer Ag Druckwerk für eine Druckmaschine ohne Feuchtwerk
DE102004052821A1 (de) * 2004-11-02 2006-05-04 Koenig & Bauer Ag Farbauftragwalze
DE102007041203A1 (de) * 2006-10-11 2008-04-24 Man Roland Druckmaschinen Ag Kurzfarbwerk für eine Verarbeitungsmaschine
DE102007010433B4 (de) 2007-03-01 2009-08-27 Koenig & Bauer Aktiengesellschaft Druckwerk

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE557069A (fr) *
DE431259C (de) * 1924-05-27 1926-07-09 Gandenberger Sche Maschinenfab Vorrichtung zum Befestigen des Gummituches auf dem UEbertragungszylinder einer Gummidruckmaschine
US1927728A (en) * 1929-07-01 1933-09-19 Wolff Fritz Form cylinder for offset-printing machines
DE649279C (de) * 1934-04-08 1937-08-19 E H Wilhelm Stein Dr Ing Verfahren zum Herstellen von Flachdruckformen fuer Buch- und Zeitungsdruck durch Umdruck eines mit der Schreibmaschine hergestellten Schriftsatzes
CH345906A (de) * 1956-10-24 1960-04-30 Winkler Fallert & Co Maschf Verfahren und Einrichtung für einen stossfreien Druckablauf an Rotationsmaschinen
US2986088A (en) * 1957-10-10 1961-05-30 Miehle Goss Dexter Inc Inking arrangement for rotary printing press
US3049995A (en) * 1957-12-05 1962-08-21 Harris Intertype Corp Printing equipment
GB1230020A (fr) * 1967-06-30 1971-04-28
SE363060B (fr) * 1969-03-12 1974-01-07 Minnesota Mining & Mfg
DE6910823U (de) * 1969-03-17 1969-07-03 Maschf Augsburg Nuernberg Ag Filmwalze oder dgl. fuer farbwerke von rotationsdruckmaschinen
FR2188502A5 (en) * 1972-06-02 1974-01-18 Farnier Rene Roughened, plush inking roller - for optimum inkingon letterpress/offset rotary/sheet-fed machines
DE3110982A1 (de) * 1981-03-20 1982-10-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Plattenzylinder mit einer plattenbefestigungsvorrichtung
DE3117341C2 (de) * 1981-05-02 1988-07-07 Albert-Frankenthal Ag, 6710 Frankenthal Farbwerk
FR2590205A1 (fr) * 1985-11-21 1987-05-22 Seailles Tison Sa Dispositif pour l'encrage d'une forme d'impression rotative a partir d'une masse compacte d'encre a viscosite elevee

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806227A3 (fr) * 2006-01-09 2011-01-19 Koenig & Bauer AG Couple d'impression et unité d'impression d'une machine pouvant imprimer une largeur de six pages de journal

Also Published As

Publication number Publication date
DE3705194A1 (de) 1988-09-01
DE3876260D1 (de) 1993-01-14
DE3705194C2 (fr) 1990-12-13
EP0279295A3 (en) 1990-02-14
EP0279295A2 (fr) 1988-08-24

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