EP1092539A1 - Dispositif pour rendre etanche un reservoir de transport d'encre dans des machines d'impression - Google Patents

Dispositif pour rendre etanche un reservoir de transport d'encre dans des machines d'impression Download PDF

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Publication number
EP1092539A1
EP1092539A1 EP00121365A EP00121365A EP1092539A1 EP 1092539 A1 EP1092539 A1 EP 1092539A1 EP 00121365 A EP00121365 A EP 00121365A EP 00121365 A EP00121365 A EP 00121365A EP 1092539 A1 EP1092539 A1 EP 1092539A1
Authority
EP
European Patent Office
Prior art keywords
ink
side parts
ink supply
sealing
contact
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.)
Withdrawn
Application number
EP00121365A
Other languages
German (de)
English (en)
Inventor
Jacques Metrope
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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
Priority claimed from DE1999149346 external-priority patent/DE19949346A1/de
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1092539A1 publication Critical patent/EP1092539A1/fr
Withdrawn legal-status Critical Current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
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices

Definitions

  • the invention relates to a device for sealing an ink-carrying reservoir such as a color box on printing machines, be it a web or printing press processing sheet material.
  • EP 0 812 687 A2 discloses an ink fountain for printing presses and a method for Operating a printing press.
  • the solution relates to the sealing of the side surfaces an ink fountain attached to an ink fountain roller, for example according to the anilox principle working inking unit is provided.
  • an ink fountain roller on the ink fountain arranged to which an ink chamber is set, which is delimited by two doctor blades becomes.
  • the two doctor blades are a metering doctor and a contaminant remover Doctor knife, both taken up on the end faces delimiting the ink chamber.
  • the one that receives the metering doctor and the doctor that removes impurities the end faces delimiting the ink chamber are all supported on the ink fountain roller.
  • an ink fountain for printing machines has become known
  • the lower part forms the color knife.
  • This ink knife is adjustable compared to the ink fountain roller, the ink supply is between the lower part and the ink fountain roller is delimited on the two end faces by ink fountain jaws, which face the ink fountain Seal the lateral surface of the ink fountain roller using a sealing surface.
  • By Leaking paint is returned to the paint supply, causing it to become dirty the inking unit is avoided.
  • This is on the ink box jaws on their respective sealing surfaces to the ink fountain roller formed a contact surface, the one Part of the ink fountain cheek covered and runs obliquely with respect to this, so that shows the lower end of the contact surface towards the inside of the ink fountain.
  • an oblique extending contact surface can also be formed spirally.
  • the sealing effect of the contact surface known from DE 34 08 183 C1 essentially depends on the manufacturing precision of the ink fountain jaws, as well as on their positioning accuracy in relation to the ink fountain roller.
  • a curvature deviation from ink fountain cheek and the ink fountain roller remains due to inevitable manufacturing tolerances.
  • the elastic elastomer material used for the ink fountain jaws is subject to fluctuations in humidity and temperature, which the printing press can vary Production conditions is exposed. The dimensional accuracy of a synthetic Materials are not guaranteed under these environmental influences. It can despite the initially functioning sealing effect during the operation of the printing press there are leaks in the ink fountain.
  • the invention is based on the object a seal to be guaranteed during all operating phases of a printing press to achieve an ink-absorbing reservoir.
  • the positioning force acts on the entire contact surface of the side parts
  • the curved contact surfaces of the side parts whose radius of curvature corresponds to that of the surface promoting the ink supply corresponds to these are employed, such that the contact surface as a whole on the rotating Surface of the ink fountain roller is set and no tilting or twisting of the side part as a whole.
  • This ensures an even surface pressure on the Contact point of the rotating surface and elastic element ensured so that encountered premature wear of the elastic sealing element.
  • the the Side force acting on the side part acts on this not only in the direction of the rotating one Surface, but also towards the bottom surface of the ink fountain. So can do this relative to the surface that promotes the ink supply and relative to the floor area movable side part are always adequately subjected to positioning forces, so that the sealing effect is guaranteed at all times.
  • the elastic elements are elastic Elements in recesses such as, for example, extending circumferentially on the side part Grooves added.
  • recesses such as, for example, extending circumferentially on the side part Grooves added.
  • Recesses or oval cross-section are the elastic elements inserted so that they protrude above the side edge of the recess to the To bring about a sealing effect with the surface of the ink fountain roller.
  • Color-promoting surface generated friction can on elastic elements
  • Contact lines arranged perpendicular to the ink fountain roller are pronounced; Line contact between surface and contact surface significantly reduces friction worries.
  • the relative to the surface promoting the ink supply and the bottom part of the feeder Movable side parts take up adjusting elements, which are, for example, in a hole can be inserted.
  • the adjusting elements are supported on stops, which in turn are in the base part the ink supply device can be embedded.
  • the elastic elements can also be used with a provided with a friction-reducing coating; the friction-reducing coating can completely or partially cover the elastic elements; both versions are conceivable.
  • one of the contact lines can be used with the friction-reducing one Coating should be provided, while the remaining contact line directly with the the surface promoting the ink supply can be in contact.
  • the sealing effect of the Contact line pair on the elastic element is not reduced while the friction can be significantly reduced.
  • a device for receiving the color supply according to the present invention can in the ink fountain of rotary printing presses, for example, be it for sheet or web processing printing machines, for offset, gravure or flexographic printing applications.
  • the ink fountain can be an inking unit of a printing unit of a rotary printing press be assigned for commercial, newspaper or even for the printing of securities suitable is.
  • a side part according to the present invention can in particular as Partial area to be included in the paint box to apply multiple colors from a color box, which is particularly important in newspaper printing presses is common.
  • Fig. 1 shows the top view of a perspectively reproduced paint box.
  • the color knife 4 is used to dose the ink supply 5 by adjusting the bottom of the ink fountain forming ink knife 4, which zoned into individual ink knife tongues can be subdivided or as a whole onto the surface 14 of the ink fountain roller 3 to or from this can be parked.
  • the the ink supply 5 against undesired, lateral leakage from the ink supply devices sealing side parts 1 and 2 have system surfaces 16, the contour is each adapted to the curvature of the surface 14 of the ink fountain roller 3 in order to thus the closest possible contact of the side parts 1, 2 to the surface 14 of the ink fountain roller 3 bring about.
  • the side parts 1, 2 of the ink supply device have a horizontally running upper edge 27, which limit the maximum fill height of the ink fountain.
  • Fig. 2 is the view of a side part according to the invention with a recess for an elastic element shown on the front.
  • the side part 1 is on the color knife 4, the metering edge 20 of which is slightly chamfered has, relatively slidably mounted. With its lower edge 21 it seals the ink supply against the color knife 4, on the front of the side parts 1, 2 are curved Contact surfaces 16 executed.
  • the recesses 17 on the contact surfaces 16 are adapted to the curvature of the surface 14 of the ink fountain roller 3.
  • an elastic element 6 is embedded in the recesses 17, which have a square, rectangular or also a round cross section can.
  • the configuration of the recesses 17 is dimensioned such that the elastic element 6 is embedded in it in such a way that it the side edges 18 of the recess 17 just exceeds and from the surrounding it Recess 17 just protrudes.
  • the course of curvature of the elastic element 6 is dimensioned such that along the curvature 19 an emergence of the elastic Element from its recess 17 is guaranteed.
  • the side parts 1 or 2 each contain a bore 22, the outlet 23 represents a support surface.
  • a spring element 7 is let into the bore 22 - for example designed as a coil spring.
  • a Cylinder body 24 is provided, which is provided with a peg-shaped extension 8.
  • the cone-shaped extension 8 is supported on a stop 9, with which the bottom surface 4 of the ink fountain forming ink knife is screwed.
  • the color knife 4 includes its side areas bores 26 into which the stops 9 are screwed with their thread 25 are.
  • the cylindrical surfaces designed as stops 9 can be used as Design cap cylinders that are only placed on a screw 25 before tighten them with an annular tool boss 28 covering the cylinder become.
  • the contact force to be generated can be: the length of the cylinder body 24 are preset in the bore 22 so that a optimal sealing effect on the curved stop surface 16 can be achieved.
  • the plant of the plan to be executed lower edge 21 to the Bottom part 4 improved over spring elements employed at the upper edge 27 of the side parts 1, 2 become.
  • Fig. 3 shows a color box divided by a side part 10 to a limited Only promote ink supply in a specific inking zone.
  • FIG. 3 is particularly advantageous for newspaper newspaper applications, in which areas with different widths of a color or printing unit Colors can be colored.
  • the color stocks can be in a uniform Color box, as shown in Fig. 3, may be included, the color box across its width through a central or several sub-areas in different color spaces can be subdivided, in each of which different color stocks are recorded. In this way, different inking areas can be adjusted across the width of the ink fountain Colorize different ink supplies, which is already due to the ink fountain division the newspaper can be colored depending on the subject.
  • Fig. 4 shows on an enlarged scale the contact surface of a side part with the surface of the ink fountain roller promoting the ink supply.
  • the side part 1 which is made of metal, plastic, an elastomer or one Another way produced synthetic material can be made is on its the roller surface 14 facing sides recessed 17.
  • the recess 17 has an approximately square cross section. That in the recess 17 according to the curvature 19 (see 2) embedded elastic element 6 has an approximately square cross section, with one between each of its outer edges designed as contact lines 6.1 of these limited concave curvature 6.2 is provided. With its two outer edges 6.1 the elastic element is in contact with the surface 14, the contact surface is a line-shaped contact area, perpendicular to the axis of rotation of the ink fountain roller 13 trending.
  • the friction between the elastic element and the ink fountain surface is considerable lower compared to full-surface contact.
  • the full-surface contact in the embodiment shown is prevented by the fact that between the two Contact edges 6.1 there is a concave curvature 6.2.
  • the sealing gap 29 between the ink roller surface 14 and the side part 1 sealed is sealed. Sealing takes place via the mentioned, perpendicular to the direction of rotation the ink fountain roller surface 14 arranged contact lines that the gap 29th close effectively.
  • the contact edges can also have a friction-reducing Coating.
  • the two contact edges shown 6.1 can be used with a friction-reducing Coating.
  • the contact edges 6.1 on one side of the square Cross section executed contact element is consumed after removing the Side part 1, the contact element 6 is only rotated by 90 ° in its recess 17, so that two still unused contact edges 6.1 with the surface of the ink fountain roller can connect again each time.
  • the sealing of the sealing gap 29 by two parallel contact edges provide additional security, so that at Damage to the inside of the contact edges 6.1, the remaining outer contact edge 6.1 the ink supply 5 received in the ink fountain at the exit through the sealing gap 29 between contact surface 16 and ink fountain roller surface 14 prevents.
  • Fig. 5 is a side part of an ink supply device with a circumferential, the contact surface and the recess assigned to the bottom part, which is on its top under Positioning force is standing and with its rear part at a stop supports.
  • the course of curvature 19 can be seen in the contact area 16 of the side part 1, wherein both the side edges 18 delimiting a recess 17 and the elastic one Element that emerges from the recess 17 follows this curve 19.
  • the contact edges 6.1 and 6.2 are indicated on the elastic element 6, with which the gap 29 between the front of the side part 1 and the surface 14 of the ink fountain roller 3 promoting the ink supply 5 is sealed.
  • the top edge 27 that of the side part 1, 2 is pressurized.
  • the pressure elements 5 can be made of springs, for example helical springs, in the embodiment variant according to FIG. exist, spring packages can also be provided.
  • the recess 17 already mentioned in connection with FIG. 2 is continued in a further recess 30 provided in the lower contact surface 12.
  • the recess 30 in the lower flat surface 12 of the side part 1 is by two side edges 31, 32 limited. Protruding beyond the side edges 31, 32 of the lower recess 30, an elastic element 11 is provided, which measured analogously to the elastic element 6 Fig. 4 is procured.
  • the elastic element 11, embedded in the recess 30, seals the sealing gap 36 between the flat surface 12 of the side part 1 and the top of the color knife 4 serving as the bottom part of the ink supply device against undesired Color leakage from the side surfaces.
  • the two as grooves with rectangular or square Recesses 17, 30 which can be made in cross section meet in the transition area 34 together.
  • the spring element 7 can be used, for example, as a helical spring be configured over which a cylindrical body 24 with a pin extension 8 is provided.
  • the pin extension 8 is supported accordingly rounded on the outer surface of a stop 9 from.
  • the stop 9 can via a thread 25 in a bore 26 in the bottom part 4 of the Ink feed device must be screwed in.
  • the cylinder can be a simple ring-shaped one Be union, by means of a tool attachment 28 in the form of a hexagon nut simply screwed onto the pin screwed to the bottom part.
  • the amount of contact force to the roller surface 14 can be preset.
  • a possible embodiment would still be the cross sections of the elastic elements 6, 11 in the recesses 17 and 30 so dimension that they are in opposite recesses in the surface of the ink fountain roller 14 or engage in the bottom part 4 of the ink supply device.
  • preventing the sealing elements 6 from being squeezed into the side part would also have a positive sealing effect of the elastic elements with which to achieve these opposing contact surfaces.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP00121365A 1999-10-13 2000-10-11 Dispositif pour rendre etanche un reservoir de transport d'encre dans des machines d'impression Withdrawn EP1092539A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19949346 1999-10-13
DE1999149346 DE19949346A1 (de) 1999-10-13 1999-10-13 Einrichtung zur Abdichtung eines farbführenden Reservoirs an Druckmaschinen
FR0007002 2000-05-31
FR0007002A FR2799686B3 (fr) 1999-10-13 2000-05-31 Dispositif pour etancher un reservoir d'encre sur des machines d'impression et encrier, mecanisme encreur et element imprimant utilisant un tel dispositif

Publications (1)

Publication Number Publication Date
EP1092539A1 true EP1092539A1 (fr) 2001-04-18

Family

ID=26055264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00121365A Withdrawn EP1092539A1 (fr) 1999-10-13 2000-10-11 Dispositif pour rendre etanche un reservoir de transport d'encre dans des machines d'impression

Country Status (3)

Country Link
US (1) US6571703B1 (fr)
EP (1) EP1092539A1 (fr)
JP (1) JP2001105571A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2204284A1 (fr) * 2008-12-23 2010-07-07 manroland AG Séparateur de zones d'encrages d'encrier
DE102022112851A1 (de) 2022-05-23 2023-11-23 Koenig & Bauer Ag Farbkasten für ein Farbwerk einer Druckmaschine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1342572T3 (da) * 2002-02-08 2005-02-07 Fischer & Krecke Gmbh & Co Tætning til en kammerrakel
DE50201562D1 (de) 2002-02-08 2004-12-23 Fischer & Krecke Gmbh & Co Dichtung für Kammerrakel
US7597761B2 (en) * 2006-08-10 2009-10-06 Van Denend Mark E Sealing assembly for an ink chamber which includes self-lubricating anilox roll seal with improved blade/seal area
US20090193990A1 (en) * 2008-02-06 2009-08-06 Van Denend Mark E Seal for an Ink Chamber with Improved Blade/Seal Area
DE102009005291A1 (de) * 2008-02-08 2009-08-13 Heidelberger Druckmaschinen Ag Verfahren zum Einrichten eines Farbkastens einer Druckmaschine
US8474378B1 (en) 2010-02-23 2013-07-02 Valley Holdings, Llc Chamber blade/sealing assembly for a printing press

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339485A (en) * 1964-06-15 1967-09-05 Bonnierfoeretagen Ab Adjustable ink supply device in rotary printing presses
DE2411771A1 (de) * 1973-03-16 1974-09-19 De La Rue Giori Sa Einfaerbvorrichtung fuer eine stichdruckmaschine
EP0052196A1 (fr) * 1980-11-15 1982-05-26 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Boîte de couleurs pour une machine à imprimer
EP0945269A1 (fr) * 1998-03-23 1999-09-29 Komori Corporation Dispositif d'encrage

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
DE230483C (fr)
US2920558A (en) 1953-10-09 1960-01-12 Dayton Rubber Company Fountain dividers
DE1224327B (de) 1963-03-28 1966-09-08 Albert Schnellpressen Farbkasten fuer Tiefdruckrotationsmaschinen
DE1963130A1 (de) 1969-12-17 1971-06-24 Bodenseewerk Geraetetech Schaltungsanordnung zur Bildung des Mittelwertes mehrerer Eingangsspannungen
US3831517A (en) 1972-12-22 1974-08-27 Dayco Corp Fountain divider
DD230483A3 (de) 1983-08-31 1985-12-04 Polygraph Leipzig Auswechselbare trennwand fuer einen farbkasten
US4991504A (en) 1988-12-15 1991-02-12 De La Rue Giori S.A. Ink duct for a printing machine
DE4001733A1 (de) 1990-01-22 1991-07-25 Windmoeller & Hoelscher Rakelvorrichtung fuer ein spuelfarbwerk einer rotationsdruckmaschine
US5410961A (en) * 1992-12-30 1995-05-02 Fit Group, Inc. Fountain assembly
DE9405883U1 (de) 1993-10-08 1994-06-09 Boeoese Ake Vorrichtung zum Abdichten des Endes einer Kammerrakel für Druckwerke
FR2734512B1 (fr) 1995-05-22 1997-08-14 Heidelberg Harris Sa Encrier d'une machine rotative a imprimer
DE19536765C2 (de) 1995-10-02 2000-08-31 Tampoprint Gmbh Farbgebersystem für eine Druckmaschine
US5662042A (en) 1996-06-10 1997-09-02 Paper Converting Machine Co. Method of operating ink unit for printing press
DE19631301A1 (de) 1996-08-02 1998-02-05 Gorter Cornelis Farbkammerrakel für eine Druckmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339485A (en) * 1964-06-15 1967-09-05 Bonnierfoeretagen Ab Adjustable ink supply device in rotary printing presses
DE2411771A1 (de) * 1973-03-16 1974-09-19 De La Rue Giori Sa Einfaerbvorrichtung fuer eine stichdruckmaschine
EP0052196A1 (fr) * 1980-11-15 1982-05-26 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Boîte de couleurs pour une machine à imprimer
EP0945269A1 (fr) * 1998-03-23 1999-09-29 Komori Corporation Dispositif d'encrage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2204284A1 (fr) * 2008-12-23 2010-07-07 manroland AG Séparateur de zones d'encrages d'encrier
DE102022112851A1 (de) 2022-05-23 2023-11-23 Koenig & Bauer Ag Farbkasten für ein Farbwerk einer Druckmaschine

Also Published As

Publication number Publication date
JP2001105571A (ja) 2001-04-17
US6571703B1 (en) 2003-06-03

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