WO1989007047A1 - Chambre de racle - Google Patents

Chambre de racle Download PDF

Info

Publication number
WO1989007047A1
WO1989007047A1 PCT/DK1989/000017 DK8900017W WO8907047A1 WO 1989007047 A1 WO1989007047 A1 WO 1989007047A1 DK 8900017 W DK8900017 W DK 8900017W WO 8907047 A1 WO8907047 A1 WO 8907047A1
Authority
WO
WIPO (PCT)
Prior art keywords
doctor blade
printing
doctor
partitioning means
chamber
Prior art date
Application number
PCT/DK1989/000017
Other languages
English (en)
Inventor
Erik Gydesen
Original Assignee
Tresu A/S
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=26064100&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1989007047(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tresu A/S filed Critical Tresu A/S
Priority to EP89902377A priority Critical patent/EP0401250B1/fr
Priority to DE68922302T priority patent/DE68922302T2/de
Publication of WO1989007047A1 publication Critical patent/WO1989007047A1/fr
Priority to DK172190A priority patent/DK172190D0/da

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/18—Inking arrangements or devices for inking selected parts of printing formes
    • 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 present invention relates to a doctor blade, in particular a chambered doctor blade, comprising at least one doctor blade for abutting against a printing means, in particular a printing or colour printing roller or other printing means, to be coated with a fluid mate ⁇ rial, and with a behind the doctor blade or the doctor blades arranged chamber, which preferably through the doctor blade or the doctor blades abuts against the prin- ting means.
  • doctor blades are widely used for coating prin ⁇ ting means, such asprinting or colour printing rollers, with a film or coating of printing ink.
  • doctor blades With the purpose to enable a driving of the printing means as well in one as in the opposite direction such doctor blades generally are composed of two doctor blades which by means of suitable holding means are sitting on the longitudinal edges of a lengthy, in cross section U-shaped chamber having its longitudinal edges located at the outer ends of this U-shaped cross section, and whereby the edges of the doctor blades, suitably spaed, are arranged facing each other and being oriented pointing some what up against each other in such a way that they, each laying against a cylindric shaped printing means,-are arranged as tangentially or more obliquely positioned in. relation to the surface of the printing means.
  • a want is present for improving the doctor blade embodiments of the previous art, and in particular of the kind mentioned in the ingress, so that the mentioned draw ⁇ backs are avoided.
  • Such partitioning means may be easy to put in place and to remove. This is in particular the case when these means are manufactured of an elastomeric material.
  • the partitioning means may vthus be located anywhere in relation to the longitudinal axis of the chamber, i.e. at a location along the axis which is oriented in parallel with for instance the axis of rota ⁇ tion of a cylindric shaped printing means.
  • the length of the chamber may be rather arbitrarily chosen, and more such partitioning means may be put in place enabling the printing simultaneously of more printing ink colours, pre ⁇ ferably within areas to be striped, with one and the same printing means, or alternatively, by way of saving prin- ting ink, a printing in striped areas may be provided.
  • a further possibility also if for instance two or more side by side arranged articles simultaneously have to be printed by means of the same printing means, is to put in place two or more chambered doctor blades accor- ding to the invention, and these chambered doctor blades being positioned. with adjustable mutual spacings which may be selectably .arranged.
  • An improving of the partitioningmeans may be provided by the letting in of a sealing thread or cord into the concave surface of-the partitioningmeans turned against the printing means to abut against this means.
  • the ends of such a sealing thread or cord may for instance below the range of the doctor blades be kept in place by being curved or loopwise let into the partitioning means, whereby a displacing or falling out of the sealing thread or cord is avoided.
  • the sealing thread or cord could take the shape of a list.
  • more than one sealing means could be put in place in each partitioning means.
  • the partitioning means presents an improve ⁇ ment, and also better environmental behaviour is achieved, in part through less consumption of printing ink, and in part through the reduction of the amount of different chambered doctor blade means required forthe carrying out of diffe ⁇ rent practical printing tasks.
  • Fig. 1 in the perspective shows an embodiment of a chambered doctor blade according to the in ⁇ vention
  • fig. 2 illustrates a partitioning means 4 to be used at embodiments as according to that of fig.1
  • fig. 3 in the perspective shows another embodiment of a partitioning means as according to fig. 2
  • fig. 4 in the perspective shows a pair of printing rollers as viewed obliquely towards one end hereof including an embodiment of arranging a chambered doctoc blade as according to Eig 1 together with the pair of printing rollers.
  • Fig 1 of the drawing illustrates a chambered doctor blade comprising a U-shaped doctor blade chamber 3 arran- ged behind two doctor blades 1 and 2 which are positioned pointing obliquely upward and inward protruding over the chamber 3 as from the top of side surfaces 3B and 3C of the chamber 3, and whereby the bottom surf ce of the cham ⁇ ber is formed by the surface 3A.
  • Through openings or studs 8 printing ink is led into and out from the chamber 3.
  • the doctorblades 1 and 2 are laying against the upper surfaces of the side walls 3B and 3C of the chamber 3.
  • the upper surface of these walls may for instance be staircaselike shaped to provide a safe holding of the doctor blades.
  • the chamber 3 is subdivided by means of partitioning means 4 to comprise one larger or more smaller chambers 3, in Fig 1 two such partitioning means 4 are shown.
  • the partitioning means 4 are shown in more details in Fig 2 and comprise a concave surface 4A determined to abut against a for instance cylindric printing roller, as delineated the edges of two doctor blades 1 and 2 being positioned pointing towards each other, in parallel with the axis of the printing roller, abutting against the circumference of the printing roller.
  • the surfaces 4B and 4C are laying against the under.side of the doctor blades 1 and 2.
  • the partitioning means 4 are for instance manufac ⁇ tured consisting of an elastomeric material exhibiting a suitable elasticity together with wear-resistance against the frictional abutting against printing rollers, which rollers in well known manner comprise an uneven surface.
  • a cordlike means 7 may be let into the surfaces 4A, 4B and 4C as shown in Fig 3 of the drawing.
  • the cordlike and for instance metallic means 7 may be let into the surfaces 4B and 4C at a depth which increases with the distance from a spot located just close to the edges of the doctor blades and in direction towards the narrow outer ends of the partitioning means.
  • Such kind of fixation is for instance deli- neated by means of the inward pointing dotted lines being drawn at both ends of the partitioning means shown in Fig 4.
  • four wire or cord means being run from the parti ⁇ tioning means according to Fig 3 and to which means they are fixed it is possible to pull partitioning means in place within a doctor blade chamber.
  • Such thread or cord means may,maintaining suitable sealing, easily be guided past corresponding embodiments of neighbouring parti ⁇ tioning means 4.
  • a chambered doctor blade abuts against the printing roller 9.
  • the chambered doctor blade comprises two doctor blades 1 and 2 being kept in place by two holding plates 5 and 6 each to lay against a side wall belonging to a U-shaped chamber 3. Through openings or studs 8, of which one is shown, printing ink is led into and out from the chamber 3 via a hose 14.
  • the chambered doctor blade is mounted unto a not shown holding means which for instance comprises botton-shaped pins to engage into slots in a holding plate 11 positioned at the external side of the chamber 3.
  • On the same side a further holding means 12 is located com ⁇ prising a screw handle means 13 for the fixation of the chambered doctor blade.
  • the four wire or cord means shown in Fig 3 may com- prise suitable marks so that partitioning means 4 from outside easily may be brought to be rightly positioned within the chamber 3.
  • FIGs 5, 6 and 7 Two further embodiments of a partitioning means ac ⁇ cording to the invention are shown in the drawing in Figs 5, 6 and 7.
  • Fig 8 the chambered doctor blade according to Fig 1 is shown together with a holding spring for the holding of partitioning means within the doctor blade chamber.
  • the spring is to better understanding shown drawn out from the doctor blade chamber.
  • the embodiment, which in the perspective is shown in Fig 5 of a partitioning means 4, is shaped with inclined oriented narrow side surfaces, i.e. such as 4A, 4B and 4C.
  • the partitioning means may as shown in Fig 6 which shows the partitioning means as viewed from the opposite side be hollow shaped so that its cross section is U-shaped.
  • Fig 7 which shows the same as Fig 6 but with a slightly different embodiment the cross sectional shape in stead of U-shaped may be E-shapelike.
  • an internally protru- ding portion 4G is present, and this portion may be massive. This results for the purpose with a strengthening of the partitioning means, i.e. functions to an improved functioning as specified.
  • a spring clamp which sidewards may be slided into the doctor blade cham ⁇ ber to abut against the partitioning means 4.
  • a suitable pair of tongs may be used which com ⁇ prises pointed portions able to grip into openings 4 and 4L in the spring clamp and to press the spring ends of the branch portions 41 and 4J towards each other.
  • the spring pressure against the inside of the doctor blade chamber, in particular against the side surfaces 3B and 3C, is reduced or removed so that a displacing of the spring clamp easily may be carried out.
  • This spring clamp when having a suitable width, exhibits the advantage that the spring connecting portions between the branches 41 and 4J and to the lengthy portion 4H in case of possibly aug ⁇ mented pressure from a partitioning means towards the spring produce a twisting of these connecting portions so that their from the partitioning means remotest spring edge fixating is pressed against the side surfaces 3B and 3C of the doctor blade chamber whereby a displacing is made more difficult.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Saccharide Compounds (AREA)
  • Glass Compositions (AREA)
  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Photographic Developing Apparatuses (AREA)

Abstract

L'invention consiste en une racle, en particulier une racle située dans une chambre contenant au moins une racle destinée à venir au contact d'un dispositif d'impression, en particulier un rouleau imprimeur ou un rouleau à impression en couleur ou un autre dispositif d'impression devant être enduite d'une matière fluide la ou les racle(s) étant pourvue(s) à l'arrière d'une chambre de racle qui, par l'intermédiaire de la ou des racle(s) vient au contact du dispositif d'impression. Pour améliorer une telle racle, par exemple en réalisant l'étanchéité d'une manière plus simple par rapport à l'ensouple, on dispose au moins une cloison (4), au travers de la chambre (3) de façon que ladite cloison (4) vienne en contact très étroit avec l'intérieur de la chambre (3) et avec le côté inférieur des racles (1, 2) et que, dans l'espace entre les bords des racles (1, 2), la cloison (4) ait une forme concave qui lui permette de venir au contact de la partie externe du dispositif d'impression. La cloison peut comprendre, dans une variante décrite plus en détail, un ou plusieurs dispositifs de serrage ou d'étanchéité et peut être disposée de manière à pouvoir être déplacée.
PCT/DK1989/000017 1988-02-01 1989-02-01 Chambre de racle WO1989007047A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP89902377A EP0401250B1 (fr) 1988-02-01 1989-02-01 Un mécanisme d'encrage pour un cylindre d'impression
DE68922302T DE68922302T2 (de) 1988-02-01 1989-02-01 Vorrichtung zum Einfärben eines Druckzylinders.
DK172190A DK172190D0 (da) 1988-02-01 1990-07-18 Kammerrakel

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DK0491/88 1988-02-01
DK049188A DK49188D0 (da) 1988-02-01 1988-02-01 Rakel
DK6388/88 1988-11-16
DK638888A DK638888D0 (da) 1988-02-01 1988-11-16 Rakel

Publications (1)

Publication Number Publication Date
WO1989007047A1 true WO1989007047A1 (fr) 1989-08-10

Family

ID=26064100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1989/000017 WO1989007047A1 (fr) 1988-02-01 1989-02-01 Chambre de racle

Country Status (6)

Country Link
EP (1) EP0401250B1 (fr)
AT (1) ATE121348T1 (fr)
AU (1) AU3055589A (fr)
DE (1) DE68922302T2 (fr)
DK (2) DK49188D0 (fr)
WO (1) WO1989007047A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0438731A2 (fr) * 1990-01-22 1991-07-31 WindmÀ¶ller & Hölscher Dispositif de raclage pour l'encrier à circulation d'encre d'une presse À  imprimer rotative
EP0461426A2 (fr) * 1990-06-07 1991-12-18 Rockwell International Corporation Système d'apport de fluide d'imprimerie sous pression pour l'impression lithographique sans clés d'encrage
EP0513480A1 (fr) * 1991-05-15 1992-11-19 Paper Converting Machine Company Dispositif d'encrage pour presse à imprimer et procédé
EP0513546A1 (fr) * 1991-05-17 1992-11-19 Tetra Laval Holdings & Finance SA Appareil d'alimentation d'encre
WO1993024328A1 (fr) * 1992-05-22 1993-12-09 Boeoese Aake Dispositif racleur a chambre pour unite d'impression, et unite d'impression
EP0607574A1 (fr) 1992-12-30 1994-07-27 Fit Group, Inc. Encrier
NL9400988A (nl) * 1994-06-16 1996-02-01 Namic Bv Rakelkamer met afdichtingselement.
WO1996034751A1 (fr) * 1995-05-03 1996-11-07 Windmöller & Hölscher Racloir pour mecanismes d'encrage de rotatives
EP0812687A2 (fr) * 1996-06-10 1997-12-17 Paper Converting Machine Company Dispositif d'encrage pour presse à imprimer et procédé
EP1491338A1 (fr) * 2003-06-25 2004-12-29 Schiavi S.p.A. Dispositif d'étanchéité latéral d'un rouleau d'encrage d'une chambre à encre d'une machine d'impression flexographique rotative
WO2005063487A1 (fr) 2003-12-30 2005-07-14 Akeboose International Ab Systeme de racle, dispositif de serrage de racle, systeme de racle a reservoir, unite d'impression, procede de serrage d'une racle, et procede permettant de fixer une portion de serrage d'une racle a reservoir
FR2909032A1 (fr) * 2006-11-27 2008-05-30 Georgia Pacific France Soc En Chambre a racles a au moins deux compartiments contenant des fluides differents.
EP2082877A1 (fr) * 2006-11-16 2009-07-29 Comexi, SA Racle pour groupe encreur dans une imprimante flexographique
WO2009112353A1 (fr) * 2008-03-04 2009-09-17 Windmöller & Hölscher Kg Raclette pour compartiment de couleur au niveau d'une machine d'impression
WO2013104366A1 (fr) * 2012-01-10 2013-07-18 Tresu A/S Joint d'étanchéité de chambre de racle
US9283744B2 (en) 2011-08-11 2016-03-15 Tresu A/S Gasket for a doctor blade chamber

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10136028C5 (de) * 2001-07-25 2016-03-17 manroland sheetfed GmbH Verfahren und Vorrichtung zum Dosieren eines flüssigen Mediums in einer Verarbeitungsmaschine
WO2007102136A2 (fr) 2006-03-09 2007-09-13 Grafiteco A/S Chambre a racles pour encre fortement visqueuse
DK176626B1 (da) * 2007-08-21 2008-12-01 Tresu Anlaeg As Pakning til kammerrakel
DK176856B1 (da) * 2008-11-26 2009-12-14 Tresu As Trykværk med böjet tætningsrakel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151968A (en) * 1936-07-27 1939-03-28 Standard Process Corp Fountain doctor
EP0128411A2 (fr) * 1983-06-08 1984-12-19 Koenig & Bauer Aktiengesellschaft Dispositif de séparation d'encre pour rouleaux d'encrage dans les machines d'impression
EP0222118A2 (fr) * 1985-11-09 1987-05-20 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Séparateur de couleurs pour dispositif d'encrage de machines flexographiques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151968A (en) * 1936-07-27 1939-03-28 Standard Process Corp Fountain doctor
EP0128411A2 (fr) * 1983-06-08 1984-12-19 Koenig & Bauer Aktiengesellschaft Dispositif de séparation d'encre pour rouleaux d'encrage dans les machines d'impression
EP0222118A2 (fr) * 1985-11-09 1987-05-20 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Séparateur de couleurs pour dispositif d'encrage de machines flexographiques

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182992A (en) * 1990-01-22 1993-02-02 Windmoller & Holscher Doctor device for the self-washing inking unit of a rotary printing press
EP0438731A3 (en) * 1990-01-22 1991-08-21 Windmoeller & Hoelscher Doctor blade assembly for the inking device with circulation of ink in a rotary printing machine
EP0438731A2 (fr) * 1990-01-22 1991-07-31 WindmÀ¶ller & Hölscher Dispositif de raclage pour l'encrier à circulation d'encre d'une presse À  imprimer rotative
EP0461426A3 (en) * 1990-06-07 1992-03-25 Rockwell International Corporation Pressurized printing fluid input system for keyless lithographic printing
EP0461426A2 (fr) * 1990-06-07 1991-12-18 Rockwell International Corporation Système d'apport de fluide d'imprimerie sous pression pour l'impression lithographique sans clés d'encrage
EP0513480A1 (fr) * 1991-05-15 1992-11-19 Paper Converting Machine Company Dispositif d'encrage pour presse à imprimer et procédé
EP0513546A1 (fr) * 1991-05-17 1992-11-19 Tetra Laval Holdings & Finance SA Appareil d'alimentation d'encre
US5343805A (en) * 1991-05-17 1994-09-06 Tetra Laval Holdings & Finance S.A. Apparatus for ink supply
WO1993024328A1 (fr) * 1992-05-22 1993-12-09 Boeoese Aake Dispositif racleur a chambre pour unite d'impression, et unite d'impression
US5671673A (en) * 1992-05-22 1997-09-30 Booese; Angstrom Ke Chambered doctor blade device for printing unit
EP0607574A1 (fr) 1992-12-30 1994-07-27 Fit Group, Inc. Encrier
NL9400988A (nl) * 1994-06-16 1996-02-01 Namic Bv Rakelkamer met afdichtingselement.
US5927199A (en) * 1995-05-03 1999-07-27 Windmoller & Holscher Doctor blade arrangement for a rinse inking unit of a rotary printing machine
WO1996034751A1 (fr) * 1995-05-03 1996-11-07 Windmöller & Hölscher Racloir pour mecanismes d'encrage de rotatives
CN1077505C (zh) * 1995-05-03 2002-01-09 温德莫勒及霍尔希尔公司 滚筒式印刷机上上墨单元的刮刀装置
EP0812687A3 (fr) * 1996-06-10 1998-05-27 Paper Converting Machine Company Dispositif d'encrage pour presse à imprimer et procédé
EP0812687A2 (fr) * 1996-06-10 1997-12-17 Paper Converting Machine Company Dispositif d'encrage pour presse à imprimer et procédé
EP1491338A1 (fr) * 2003-06-25 2004-12-29 Schiavi S.p.A. Dispositif d'étanchéité latéral d'un rouleau d'encrage d'une chambre à encre d'une machine d'impression flexographique rotative
WO2005063487A1 (fr) 2003-12-30 2005-07-14 Akeboose International Ab Systeme de racle, dispositif de serrage de racle, systeme de racle a reservoir, unite d'impression, procede de serrage d'une racle, et procede permettant de fixer une portion de serrage d'une racle a reservoir
US7987783B2 (en) 2003-12-30 2011-08-02 Ake-Boose International Ab Doctor blade system, doctor blade clamping device, chambered doctor blade system, printing unit, method for clamping a doctor blade, and method for attaching a clamping portion of a chambered doctor blade
EP2082877A4 (fr) * 2006-11-16 2011-09-21 Comexi Group Ind S A Racle pour groupe encreur dans une imprimante flexographique
EP2082877A1 (fr) * 2006-11-16 2009-07-29 Comexi, SA Racle pour groupe encreur dans une imprimante flexographique
FR2909032A1 (fr) * 2006-11-27 2008-05-30 Georgia Pacific France Soc En Chambre a racles a au moins deux compartiments contenant des fluides differents.
EP1927476A1 (fr) * 2006-11-27 2008-06-04 Georgia-Pacific France Chambre à racles à au moins deux compartiments contenant des fluides différents
WO2009112353A1 (fr) * 2008-03-04 2009-09-17 Windmöller & Hölscher Kg Raclette pour compartiment de couleur au niveau d'une machine d'impression
US9283744B2 (en) 2011-08-11 2016-03-15 Tresu A/S Gasket for a doctor blade chamber
WO2013104366A1 (fr) * 2012-01-10 2013-07-18 Tresu A/S Joint d'étanchéité de chambre de racle
CN104066583A (zh) * 2012-01-10 2014-09-24 丹麦得利速股份公司 刮墨刀腔密封
US9229359B2 (en) 2012-01-10 2016-01-05 Tresu A/S Doctor blade chamber seal

Also Published As

Publication number Publication date
AU3055589A (en) 1989-08-25
DK49188D0 (da) 1988-02-01
EP0401250A1 (fr) 1990-12-12
DE68922302T2 (de) 1995-12-07
DE68922302D1 (de) 1995-05-24
DK638888D0 (da) 1988-11-16
EP0401250B1 (fr) 1995-04-19
ATE121348T1 (de) 1995-05-15

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