EP2033788A2 - Chambre d'encrage - Google Patents

Chambre d'encrage Download PDF

Info

Publication number
EP2033788A2
EP2033788A2 EP08009590A EP08009590A EP2033788A2 EP 2033788 A2 EP2033788 A2 EP 2033788A2 EP 08009590 A EP08009590 A EP 08009590A EP 08009590 A EP08009590 A EP 08009590A EP 2033788 A2 EP2033788 A2 EP 2033788A2
Authority
EP
European Patent Office
Prior art keywords
ink chamber
doctor blade
ink
doctor
shaft
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Withdrawn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
EP08009590A
Other languages
German (de)
English (en)
Inventor
Rainer Wieland
Peter Schmitt
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.)
KBA Metronic GmbH
Original Assignee
KBA Metronic GmbH
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 KBA Metronic GmbH filed Critical KBA Metronic GmbH
Publication of EP2033788A2 publication Critical patent/EP2033788A2/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B41F31/027—Ink rail devices for inking ink rollers

Definitions

  • the invention relates to a paint chamber, comprising two doctor strips, on each of which a doctor blade is arranged, wherein between the edges of the doctor plates an opening is formed, is transferred by the color from the ink chamber to a ink transfer roller, wherein the ink chamber further comprises a mechanism for closing the opening between the squeegee plates.
  • Ink wells are well known in the art and are used to apply ink from this inking chamber to a ink transfer roller, e.g. to apply an anilox roller of a printing machine.
  • a paint chamber usually forms a frame shape with two short opposite end shields and two long opposite side elements, wherein on the side elements each a doctor bar and each at this a doctor blade is arranged. If necessary.
  • a side member can directly form a doctor bar. In any case, that element is referred to as a doctor bar on which a doctor blade is arranged or attached.
  • the ink transfer roller is at the two respective edges of the two doctor plates under a bias, which forms a rotating ink roller by the rotation of the ink transfer roller on the doctor blade forming the doctor blade and ink color is transferred from the ink roller to the ink transfer roller.
  • the working doctor blade opposite (closing) doctor blade in this case essentially serves to seal the opening of a paint chamber relative to the ink transfer roller at a standstill Ink transfer roller, that is, when the ink located in the ink chamber completely distributed in the ink chamber.
  • this sheet To operate this sheet is removed and the color can get to the ink transfer roller. If the color is to be changed, this sheet is reintroduced and closes the opening to the ink transfer roller again, so that the mistakeinschub can be removed with the color therein.
  • a disadvantage of the type described is that the ink, which succeeded during normal operation of the doctor blades, t remains there at a removal of Farbischubs and continues to get color between Aidschub and ink chamber, so that both after removal outer area of mistakeinschubs as well as the now inside area of the ink chamber needs to be cleaned.
  • the chamber volume of the ink chamber is considerably reduced by the displacement of the doctor blade together with the doctor blade, so that in particular in a completely or almost completely filled Ink chamber the risk of overflow, which uncontrollably ink reaches the press.
  • the object of the invention is to provide a paint chamber which avoids the aforementioned disadvantages and automatically closes when removing it from the printing unit and thus largely precludes incorrect operation.
  • the object of the invention is to provide an improved ink chamber of the generic type, which makes it possible to perform a color change quickly and easily, without any remaining in the ink chamber ink quantities can drip into the press and at the same time the cleaning effort is minimized.
  • the object of the invention is also to provide a color chamber, which makes it possible to perform a color change even when completely filled ink chamber.
  • the object of the invention is also to provide a paint chamber, with which it is possible to perform a color change with minimal loss of color.
  • the mechanism comprises an actuator by the actuation of the opening between the doctor blades is closed and by its operation after or during the closing process, the dyeing chamber relative to a stationary support in a printing unit movable, in particular by the movement unlocked and can be removed from this holder.
  • the ink chamber is completely and automatically closed immediately before removing or during removal of the ink chamber of the ink transfer roller to the ink transfer roller, so that no ink can escape from the ink chamber to the ink transfer roller out.
  • anilox roller is used in the following text without restriction of generality instead of the term ink transfer roller.
  • the actuating element can be actuated manually or controlled by another device.
  • the actuating element can be designed as a lever.
  • the two doctor plates are movable relative to each other, wherein either both doctor plates can be moved simultaneously or even a squeegee is fixed and the other squeegee is movable relative to this. Accordingly, by suitable selection of the respective movements it can be achieved that the two edges of the squeegee plate are moved toward each other so that during relative movement the opening between the edges of the squeegee plates decreases until this opening is completely closed when touch the squeegee sheet.
  • At least one of the doctor plates is guided with the leading edge over the surface of the anilox roller and thereby the ink from the surface of the anilox roller and scraped into the ink chamber.
  • the ink chamber has a movable doctor blade and a stationary doctor blade.
  • the movable doctor blade which is provided for closing the opening, with respect.
  • the anilox roll form the closing squeegee, which is opposite to the working doctor.
  • a paint chamber on two doctor plates one of which is movable.
  • the ink chamber may have a fixed working blade plate and fixed closing blade plate, and at least one separate blade plate for closing the ink chamber.
  • a doctor blade can be referred to as a closure doctor blade. This may - if only one is provided - in a preferred embodiment parallel to one of these two fixed doctor plates, in particular preferably be arranged parallel to the closing doctor blade in the interior of the ink chamber.
  • the ink chamber is fixed in a holder so that the opening formed by the doctor plates tightly against the anilox roller and the ink can be transferred from the ink chamber to the anilox roller.
  • the said movements are carried out by means attached to / in the ink chamber mechanism by which on the one hand, the ink chamber is closed in the manner mentioned to the anilox roll and on the other hand, the fixation of the ink chamber is solved and the Color chamber from said holder and thus can be removed from its working position.
  • the opening formed in the ink chamber between the edges of the doctor plates, by a relative movement of at least one of the doctor plates and / or at least one additional shutter blade plate is closed to each other so that the inside the color chamber is inked from the anilox roll adjacent to the anilox roller and the doctored ink is transported into the ink chamber and that preferably the internal volume of the ink chamber remains at least substantially constant.
  • the volume is preferably considered to be substantially constant if it changes by less than 10% when closing the ink chamber.
  • the fact that the volume remains at least substantially constant during the movement by movement of at least one doctor blade is preferably achieved by the fact that, when the mechanism is actuated, the doctor blades provided in the ink chamber remain stationary and only at least one of the doctor plates is moved.
  • These doctor blades are usually thin and flexible and thus displace little or only a negligible volume within the ink chamber upon movement relative to those known in the art Paint chambers in which a doctor blade is moved together with a doctor bar.
  • the volume reduction can be kept low in that a doctor blade is moved in the movement parallel to its working position or at least substantially parallel to a stationary blade plate, whereby it is pressed upon movement with a leading edge on the lateral surface of the anilox roller.
  • the doctor blade edge bends due to its flexibility and therefore runs during its entire movement near the lateral surface of the anilox roller.
  • a separate movable closure squeegee may move with its leading edge initially along the inner surface of the fixed squeegee plate, e.g. of the closing squeegee sheet and then along the surface of the anilox roll at least to the leading edge of the second fixed squeegee sheet, e.g. the Schwarzrakelbleches, whereby the VerInstitutrakelblech on the one hand, the surface of the anilox roller scraped and thus conveys the ink resting thereon in the interior of the ink chamber and on the other hand, the ink chamber is closed to the anilox roller.
  • the leading edge of at least one of the doctor plates is moved toward the front edge of the opposing doctor blade and the doctor blade edges touch or overlap each other, so that the ink chamber is thereby closed.
  • the ink chamber when removing the anilox roller via a mechanism is automatically closed to the anilox roller by the doctor plates and in particular the edges of the doctor plates and / or the shutter turret plates by means of translational and / or rotational movements towards each other be moved and thus close the ink chamber to the anilox roller.
  • a mechanism which accomplishes this and provides for a substantially constant volume can e.g. be effected in that a movable doctor blade is operatively connected to a rotatably mounted shaft which is arranged parallel to the blade edge, wherein by means of the actuating element a rotational movement of the shaft about its axis of rotation is effected and by the rotational movement, the leading edge of the movable doctor blade on the leading edge of the opposite Doctor blade is moved and in its end position on / on the front edge of the opposing doctor blade on / rests that the opening between the doctor plates is closed, in particular wherein the leading edge of the movable doctor blade during closing off excess ink from the surface of an anilox roller of a printing unit ,
  • a movable doctor blade is secured to the shaft and in the open position at least partially wound around the shaft and during the rotational movement of the shaft of this is unwound, in particular wherein the doctor blade in the closing movement inside is moved past the doctor bar or in the other alternative on a fixed blade plate.
  • the moving squeegee plate slides towards the opposite squeegee plate, as in the case of a venetian blind. Accordingly, it is considered particularly advantageous if a movable doctor blade is designed as a spring steel sheet, since this has the necessary flexibility to be repeatedly wound up and unwound on the shaft of the mechanism.
  • the ink chamber may also have fixed locking elements on this side opposite the mechanism, which are provided with corresponding elements, e.g. can be brought into engagement with recesses on the holder.
  • corresponding elements e.g. can be brought into engagement with recesses on the holder.
  • all fixed locking elements and corresponding elements of the holder are aligned so as to define an axis of rotation around which the levering out of the ink chamber is effected upon actuation of the mechanism.
  • the color chamber is closed when the mechanism is actuated.
  • such a locking element in the shaft in the radial direction displaceable and radially outward, in particular by a spring load is subjected to a force.
  • a spring load is subjected to a force.
  • the ink chamber in the holder and against a cylinder e.g. an anilox roller of a printing unit is pressed and in particular also that the ink chamber overcaps when crossing the end facing the shaft of the locking element via an imaginary connecting line between opposite stops of the ink chamber in the holder in the respective direction of movement.
  • the locking element will engage the holder and, during the insertion movement, the shaft will pass through the locking element set in rotation, whereby the ink chamber is opened and simultaneously locked in the holder.
  • this shaft is further preferably provided to arrange this shaft near one of the doctor rails, in particular above this, so that a doctor blade in the space between the shaft and doctor bar is up and unwound during a movement.
  • this shaft for moving a doctor blade, it may also be provided to use two opposite waves, for moving two doctor plates toward each other, wherein at least one of the waves also causes the locking and release of the locking against the holder.
  • it can further be provided to color-seal the doctor plates to the front side shields of the ink chamber as soon as the ink chamber is also closed to the ink roller to prevent leakage of ink from the ink chamber between front side shield and doctor blade.
  • each end shield for example in the form of an elastic end member which seals the paint chamber laterally against leaking paint, which in particular immediately before and after removal the color chamber from the holder must have a sealing effect, for example, that in the end shields of the ink chamber in the region of the front edges of the Rakelblecheten each a flexible material is introduced as a final element, which for example by means of a respective device immediately before removing the ink chamber of the Holder is pressed against the respective edges of the doctor plates and / or doctor strips, in particular by deformation and / or displacement of the material.
  • the control of the position of the eccentric rollers can also be done according to the invention via the mechanism for moving the doctor plates, so that when closing the ink chamber to Raterwalze also the end shields are closed to the front edges of the doctor blades and thus a completely closed to the printing unit Color chamber results.
  • FIG. 1 shows a schematic representation of a first ink chamber according to the invention.
  • the ink chamber 3 in this case has a certain internal volume 3a for receiving ink 200, which via an opening surface 30 with the Cup provided surface 1 a of an anilox roller 1 is applied.
  • the wells are filled with ink and upon rotation of the anilox roller 1 in direction 100, excess ink is doctored off by means of, for example, attached to a side wall 14, fixed standing squeegee sheet 11 from the surface 1a of the anilox roller 1 and conveyed back into the ink chamber 3.
  • the ink chamber 3 itself is for example mounted in a holder 2 so that it can be easily removed from this, for example for cleaning purposes or during a color change.
  • the holder 2 for example, recesses 4a and 4b, in which corresponding attached to the ink chamber 3 counterparts 5, 6 engage and fix the ink chamber in a working position on the one hand and, if necessary, a certain additional contact pressure of the doctor plates 10, 11 on the surface 1a of the anilox roller 1 exercise, for example via corresponding compression springs 7a.
  • doctor plates 10,11 themselves consist in addition of a flexible material such as stainless steel, so that they can also exert on their own spring action a certain contact pressure on the surface 1a of the anilox roller 1.
  • a displaceable locking element 7 fixed ball-head counterpart 6 in a rotatably mounted shaft 8 to store and with a example via a compression spring 7a to bias against the recess 4b, that the ink chamber is held on the one hand in a first position, the working position, on the force of the spring 7a and the other with a rotation of the shaft 8 about its axis of rotation, the ink chamber on the radially displaceable to the shaft locking element. 7 and the counterpart 6 can be levered out of the working position.
  • a corresponding lever 9 is further attached to the shaft 8 so as to remove, for example, manually or via a non-illustrated controlled drive the ink chamber from its working position.
  • a corresponding lever 9 is further attached to the shaft 8 so as to remove, for example, manually or via a non-illustrated controlled drive the ink chamber from its working position.
  • a shutter blade plate 10 directly or via a holder, not shown so that with a rotation of the shaft 8 during removal of the ink chamber from the receiving device 2, the leading edge of the doctor blade 10 in the direction of The leading edge of the opposite doctor blade 11 is moved and come at least at the end of the rotational movement, the leading edges of the doctor plates 10, 11 to each other or one above the other, that the opening 30 is completely closed to the anilox roller 1 and thus no ink from the ink chamber in the direction of Anilox roller can escape and the ink chamber can be easily removed from the printing press.
  • the leading edge of the movable doctor blade 10 during the closing process over the surface 1a of the anilox roller 1 and this travels from it, so that in this way the ink is transported into the interior of the ink chamber.
  • FIG. 2 Another embodiment of a paint chamber according to the invention shows FIG. 2 which has the same essential features of the first embodiment according to the invention.
  • another, attached to the side wall 13 and fixed doctor blade 12 is provided here, so that the side walls 13, 14 form with the fixed thereon Rakelblechen 11, 12 and the corresponding end-side covers a conventional ink chamber.
  • the additional doctor blade 10 is as in FIG. 1 shown attached to the rotatable shaft 8 directly or via a corresponding holding device, that whose leading edge does not rest in the working position of the ink chamber on the surface 1 a of the anilox roller and has no influence on the printing process.
  • FIG. 3a shows the ink chamber 3 in its normal working position, in which the doctor blade 10 in a first position on the surface 1 a of the anilox roller 1 abuts that an opening 30 is formed between the ink chamber 3 and the surface 1a of the anilox roller 1, so that the wells of the anilox roller 1 can be filled with the ink 200 and a normal, trouble-free printing operation can take place.
  • Figure 3c shows the situation immediately before an end position of the rotational movement of the shaft 8, in which the opening 30 is already closed and the leading edges of the doctor blade 10, 11 are in a contact line 15, for example, one above the other. Due to the internal stresses of the flexible doctor plates and correspondingly selected angle of attack of the doctor plates to each other while the leading edges of the doctor plates 10,11 are pressed against each other, thereby resulting in an additional seal of the contact line 15.
  • FIG. 3d figure finally shows schematically the removed ink chamber 3, the shaft 8 comes to rest in its final position.
  • a flexible material 33a, 33b at least in the region of the sealed end edges 10a, 10b of the movable doctor blade 10 and / or the stationary doctor blade 11 to introduce how in FIG. 4 shown schematically. Since it is not possible due to mechanical imbalances of the anilox roller, the abrasion of the doctor blades and other external influences and in particular in a movably mounted doctor blade plate to firmly connect the doctor plates with the end shields, always results between front side shield 2a and the front edge 10a, 10b of the doctor blade 10, a respective gap 31 a, 31 b, over which printing ink can escape uncontrollably.
  • the flexible material 33a, 33b introduced into the end shields 2a, 2b is deformed by means of a respective device 20a, 20b at least in the case of a sealed ink chamber 3 such that the sides of the flexible materials 33a, 33b facing the ink chamber touch the edges 10a, 10b of the doctor blade are pressed and thereby the column 31a, 31 b are closed, as in FIG. 6 shown.
  • the respective devices 20a, 20b can be realized, for example, in that in each case a cylinder 21a, 21b are mounted eccentrically on a shaft 22a, 22b in a respective recess 23a, 23b of the end shields 2a, 2b, the respective lateral surfaces of which are on the flexible Materials 33a, 33b act.
  • a first position of the cylinder 21 a, 21 b as in FIG. 5 In this case, no or only a minimal force is exerted on the flexible materials 33a, 33b, so that they do not deform or only insignificantly deform and the gaps 31a, 31b develop accordingly.
  • a second position of the cylinder 21 a, 21 b as in FIG.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP08009590A 2007-09-04 2008-05-27 Chambre d'encrage Withdrawn EP2033788A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007041758A DE102007041758A1 (de) 2007-09-04 2007-09-04 Farbkammer

Publications (1)

Publication Number Publication Date
EP2033788A2 true EP2033788A2 (fr) 2009-03-11

Family

ID=40043973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08009590A Withdrawn EP2033788A2 (fr) 2007-09-04 2008-05-27 Chambre d'encrage

Country Status (4)

Country Link
US (1) US20090056573A1 (fr)
EP (1) EP2033788A2 (fr)
CN (1) CN101380844A (fr)
DE (1) DE102007041758A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007041755B4 (de) * 2007-09-04 2011-02-17 Kba-Metronic Aktiengesellschaft Farbkammer
CN114132075B (zh) * 2021-12-14 2024-05-10 郑州溢彩印务有限公司 一种塑料薄膜印刷机及其印刷工艺

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349053A1 (de) 2003-09-12 2005-04-07 Metronic Ag Farbkammer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19624440A1 (de) * 1996-06-19 1998-01-02 Roland Man Druckmasch Einrichtung zum Füllen von Vertiefungen eines Zylinders, Rakeleinrichtungen hierfür sowie Verfahren zu deren Wechsel
DE29718388U1 (de) * 1996-10-25 1997-12-18 Koenig & Bauer Albert Ag Farbkasten
DE29718387U1 (de) * 1996-10-25 1998-01-22 Koenig & Bauer Albert Ag Rakel für eine Rotationsdruckmaschine
DE19757897C1 (de) * 1997-12-24 1999-07-22 Koenig & Bauer Ag Anordnung für ein Farbwerk einer Rotationsdruckmaschine
DE59911449D1 (de) * 1999-10-05 2005-02-17 Gallus Ferd Rueesch Ag St Gall Farbkammerrakel
AU2000265521A1 (en) * 2000-08-24 2002-03-04 Gallus Ferd. Ruesch Ag Chamber doctor blade
JP2005088586A (ja) * 2003-09-12 2005-04-07 Metronic Ag インキ壺
DE102007041756B4 (de) * 2007-09-04 2010-10-21 Kba-Metronic Aktiengesellschaft Farbkammer
DE102007041755B4 (de) * 2007-09-04 2011-02-17 Kba-Metronic Aktiengesellschaft Farbkammer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349053A1 (de) 2003-09-12 2005-04-07 Metronic Ag Farbkammer

Also Published As

Publication number Publication date
DE102007041758A1 (de) 2009-03-05
CN101380844A (zh) 2009-03-11
US20090056573A1 (en) 2009-03-05

Similar Documents

Publication Publication Date Title
EP1997633B1 (fr) Chambre à racles pouvant être commandée
DE19740129C2 (de) Rotationsdruckmaschine mit stirnseitig freilegbaren Zylindern
DE102007057790B4 (de) Rundlaufpresse
EP0960032B1 (fr) Dispositif de transport et de butee de document
EP0639454B1 (fr) Dispositif à crochet escamotable pour maintenir une plaque d'impression sur un cylindre porte-plaque dans une imprimante rotative et imprimante rotative comportant un tel dispositif
DE2212206C3 (de) Druckdrehfilter
EP2033788A2 (fr) Chambre d'encrage
EP0369195A2 (fr) Tête d'extrusion
EP1671790B1 (fr) Module interchangeable pour machine d'impression
DE10319773A1 (de) Siebdruckzylinder
EP1514684B1 (fr) Encreur avec une chambre à râcles
EP1734181A1 (fr) Dispositif de support de racle
EP2033787B1 (fr) Chambre d'encrage
EP1090756B1 (fr) Chambre à râcles
DE102007041756A1 (de) Farbkammer
DE2343553A1 (de) Verfahren und vorrichtung zur filterung einer durch einen kanal fliessenden substanz
DE4005823C2 (fr)
DE10349053B4 (de) Farbkammer
DE102018208711B4 (de) Beschickungsschacht für Stempelkneter
EP0305549B1 (fr) Chambre de decalaminage de feuillards avec des poudres abrasives
EP3653381B1 (fr) Boîte de drainage pour une chambre à racle
DE19854494C2 (de) Vorrichtung zur Farbversorgung eines Farbwerkes einer Druckmaschine
DE10158487B4 (de) Farbwerk einer Druckmaschine
EP0639738A1 (fr) Dispositif de raccordement temporaire d'une source de fluide avec un élément d'utilisation
DE202016003826U1 (de) Positioniereinheit sowie Pumpstation mit einer Positioniereinheit für einen zylindrischen Wechselbehälter

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

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20090624