EP1287907A2 - Racle pour chambre sous pression - Google Patents

Racle pour chambre sous pression Download PDF

Info

Publication number
EP1287907A2
EP1287907A2 EP02019555A EP02019555A EP1287907A2 EP 1287907 A2 EP1287907 A2 EP 1287907A2 EP 02019555 A EP02019555 A EP 02019555A EP 02019555 A EP02019555 A EP 02019555A EP 1287907 A2 EP1287907 A2 EP 1287907A2
Authority
EP
European Patent Office
Prior art keywords
doctor blade
pressure chamber
displacement body
gap
roller
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
EP02019555A
Other languages
German (de)
English (en)
Other versions
EP1287907B1 (fr
EP1287907A3 (fr
Inventor
Bernd Martens
Sadan Deral
Wolfram Szczepaniak
Nils Hansen
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.)
Maschinenfabrik Max Kroenert GmbH and Co
Original Assignee
Maschinenfabrik Max Kroenert GmbH and Co
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 Maschinenfabrik Max Kroenert GmbH and Co filed Critical Maschinenfabrik Max Kroenert GmbH and Co
Publication of EP1287907A2 publication Critical patent/EP1287907A2/fr
Publication of EP1287907A3 publication Critical patent/EP1287907A3/fr
Application granted granted Critical
Publication of EP1287907B1 publication Critical patent/EP1287907B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller

Definitions

  • the invention relates to a pressure chamber doctor blade Applying a liquid medium to a rotating medium Roller, which Druckschrakel an axially extending squeegee head, each with a axially extending and on the lateral surface of the Roller adjoining metering blade and sealing squeegee in Circumferentially bounded a chamber in which a axially extending displacer to form a pressure room and a drain room and under Leaving a job gap to the surface of the Roller is arranged, which from the liquid medium to Wetting of the lateral surface is flowed through, wherein the Medium guided by a feeder in the pressure chamber becomes.
  • Such a pressure chamber doctor blade is for example from the DE 299 17 979.6 U1.
  • the Displacement body in a recess of the chamber let in and bolted to the squeegee head. It are set screws to the distance of the Displacement body to change the roller.
  • the medium to be applied through lateral openings in the displacement body in passed the pressure chamber resulting in a homogeneous Distribution of the medium over the axial extent of the Pressure chamber and thus in the order gap results.
  • Such pressure chamber is for a change of to be applied medium or in case of interruption of the Operation relatively difficult to clean.
  • the breakthroughs can clog quickly.
  • Displacer and squeegee head each other have facing contact surfaces, the pressure chamber side delimit between them at least one gap, which in the pressure chamber opens and this with the feeder connects, so that the medium enters the pressure chamber.
  • the medium thus flows from at least one feed channel through the displacement body and the gap in the Pressure chamber.
  • the at least one Gap through a depression on a contact surface of the Suppression body and / or on a corresponding one Contact surface of the squeegee head is formed.
  • Such Deepening can be done with simple means in just minor Depth are executed so that in the assembled Position a gap with a slight clearance gap arises.
  • the at least one gap through Spacers is formed between the corresponding contact surfaces of the displacement body and squeegee head are arranged.
  • Such spacers can be made to fit and in a small thickness which thickness then defines the gap. by both measures can be a clear gap in the assembled position of less than 2.0 mm and preferably less than 1.0 mm are formed.
  • the gap is almost over the entire axial length of the chamber extends and only by contact areas of the displacement body on the Squeegee head is interrupted.
  • the support areas can with displacement body of small width only at the axial Ends of the displacement body are provided. at larger widths are also bearing areas in the middle Be appropriate area so that the displacement body exactly parallel and over the entire axial length with the same distance from the roll surface.
  • the feed opens in front of the gap in the Displacer. It is cheap if the feeder an axially extending recess in the Displacement body and / or squeegee head includes, of which Gap goes out. This has the advantage that even with only a central supply of the medium in the Displacement body already before entering the Pressure chamber, a distribution of the medium in the axial direction he follows. The medium accumulates over the entire length in front of the narrow gap and can evenly into the pressure chamber enter. Furthermore, it is useful if the gap in essentially tangential to the roller.
  • the invention also relates to a pressure chamber doctor blade a particularly easy to install Displacer.
  • the displacement body on his the Squeegee-facing side with undercut grooves are provided, which adjoin an insertion opening and into the bolts with corresponding thickened ends engage, perpendicular to the undercut back and stored movably in the squeegee head and over at least a clamping means are fixable to the displacement body with the squeegee head to clamp.
  • the bolts extend through the squeegee head, and the tensioning means are on the displacement body arranged away side of the squeegee head.
  • This will be a particularly easy installation of the displacement body reached.
  • the clamping means always stay good reachable below the squeegee head, where they also from are protected from escaping medium.
  • clamping devices are basically any.
  • the bolts on the the repressive body away from the page with Bolts are tightened. It is particularly useful however, if the clamping means are motorized, hydraulic or work pneumatically. This is also cheap, though the displacement body at a plurality of axially spaced Areas on the bolt is clamped. in principle it is appropriate if at these areas respectively at least one bolt on the side of the pressure chamber and are arranged on the side of the drainage chamber.
  • the displacer and squeegee head touch each other Contact surfaces, and the displacer is in at least one mounting direction, in particular parallel to the roll axis, back and forth to the bolts introduce and move into the undercuts can. It can be provided that the bolts in the built-in location the defined orientation of the Defining the displacement body relative to the roller.
  • displacement body is very accurate in relation to the Align the roller to the desired and defined To achieve flow conditions in the order gap. It is therefore expedient if the displacement body over Guides in a mounting direction on the doctor blade hinund is herverschiebbar that the displacement body in the direction perpendicular to the mounting direction relative to Align the roller.
  • the mounting direction runs thereby preferably parallel to the roll axis, while the Guide means a tangential orientation of the Cause displacement body. This can be the required exact alignment of the displacement body take place relative to the roller.
  • the arranged between the displacement body and doctor blade are about the distance of the displacement body to the roller vary. So that can the pressure comb squeegee different viscous media and different Order thicknesses are adjusted.
  • the pressure chamber doctor blade shown in the drawing is below a roller 11 in the so-called 6 o'clock position arranged and extends in axial Direction parallel to the roll axis.
  • the machine frame, the pressure chamber doctor blade and the roller 11 and the wears other rolls and aggregates, is the For clarity's sake not in the drawing shown.
  • the pressure comb scraper has a doctor blade 12 and a Dosierrakel 13 and a sealing blade 14, which at the Roll surface abut and thus limit a chamber. It is an axially extending displacer 15 provided, the chamber in a pressure chamber 16 and a drain space 17 is divided and between itself and the Roller limited an order gap 18. That on the roller applied medium passes through the displacement body 15 in the pressure chamber, flows through the application gap 18th and thus wets the roller, which in turn wetted web material or another roller. Excess medium is from the metering blade 13 of the Roller removed and enters the drainage chamber 17, from the it removes or recirculates the pressure chamber is supplied.
  • the pressure chamber doctor blade corresponds a conventional pressure chamber doctor blade and requires none further explanation.
  • the displacement body 15 and the doctor blade 12 touch over contact surfaces 19, 20.
  • the Arrangement made such that the doctor blade 12 in is formed substantially trough-shaped and a in essentially plan ground with the contact surfaces having.
  • the contact surfaces 19, 20 extend preferably in one plane.
  • the contact surfaces extend axially on either side of a central feed 21 for the medium.
  • In the assembled position are the contact surfaces 19, 20th the displacement body 15 and the doctor head 12th sealing each other.
  • the displacement body and the Doctor blade limit between pressure chamber side at least one gap 22 through which the medium passes through Feeder 21 enters the pressure chamber 16. This gap may be due to depressions on the contact surface of the Displacement body 15 or the doctor blade 12 is formed become. As a result, arbitrarily narrow gaps can be formed become. Nevertheless, the cleaning remains easy because in the apart built the boundary walls of the Gap are freely accessible.
  • the gap 22 can almost over the entire axial Length of the pressure chamber doctor blade extend and only terminal by contact areas of the displacement body on the Squeegee head be limited. For wider rollers it is however, favorable if several axial spaced Support areas 29 are present to a bending of the Prevent displacement body relative to the squeegee head.
  • the feeder 21 may be considered to be an axially extending one Recess in the displacement body and / or doctor blade be formed in the one or more central Feed channels open.
  • the medium accumulates thus before the Gap 22 and passes evenly into the pressure chamber 16th
  • the contact surfaces 19, 20 of the Squeegee head and the extruder body substantially tangential to the roller, so that the gap is also in tangential direction opens into the pressure chamber. This will be a homogeneous application of the medium to the roller supported.
  • Fig. 4 of the drawing is another storage of Doctor blade 12 shown on such a crossbar 30.
  • Displacement body thus runs along its entire axial extent almost exactly parallel to Roll surface, so that the application gap is always the has the same clear gap, resulting in a particularly uniform application of the medium results.
  • a Such storage is also with oscillating doctor heads possible.
  • the displacement body 15 is flat on the bottom of the Squeegee head up. On his the squeegee head facing Bottom 23 are undercut grooves 24, which adjoin insertion openings 25. In these Insertion holes fit bolts 26 that with corresponding thickened or stepped ends 27 intervene in the undercuts.
  • the bolts 26 extend through the squeegee head and are mounted movably perpendicular to the undercuts. On the side facing away from the displacement body 15 of the Doctor blade act the bolts 26 with hydraulic or pneumatic clamping cylinders 28 together, the bolts move down and thus the displacement body 15th firmly clamp with the squeegee head 12.
  • the clamping cylinder relaxes, and the displacement body can be moved out of the bolt guide and out of the chamber be lifted.
  • This is a fast and safe Assembly of the displacement body in the doctor head possible.
  • guide means be that the displacement body tangential to the roller fix and a movement only in the axial direction allow.
  • the undercut grooves are corresponding aligned. This is an exact positioning of the Displacement body 15 for forming the application gap 18 guaranteed.
  • the bolts and the corresponding grooves at least the pressure chamber side in the Support areas 29 of the displacement body 15 on the Doctor blade 12 is arranged.

Landscapes

  • Coating Apparatus (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Paper (AREA)
  • Pens And Brushes (AREA)
EP02019555A 2001-09-03 2002-09-02 Racle pour chambre sous pression Expired - Lifetime EP1287907B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10143077A DE10143077B4 (de) 2001-09-03 2001-09-03 Druckkammerrakel
DE10143077 2001-09-03

Publications (3)

Publication Number Publication Date
EP1287907A2 true EP1287907A2 (fr) 2003-03-05
EP1287907A3 EP1287907A3 (fr) 2005-07-13
EP1287907B1 EP1287907B1 (fr) 2007-06-06

Family

ID=7697514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02019555A Expired - Lifetime EP1287907B1 (fr) 2001-09-03 2002-09-02 Racle pour chambre sous pression

Country Status (4)

Country Link
US (1) US6872257B2 (fr)
EP (1) EP1287907B1 (fr)
AT (1) ATE363949T1 (fr)
DE (3) DE10164773A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008012552A1 (de) * 2008-03-04 2009-09-17 Windmöller & Hölscher Kg Farbkammerrakel an einer Druckmaschine
CN109332106B (zh) * 2018-11-22 2023-09-22 大正(江苏)微纳科技有限公司 涂布机刮刀装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29917979U1 (de) 1999-10-12 2000-01-27 Kroenert Max Maschf Druckkammerrakel zum Auftragen eines Mediums auf eine Walze

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829886A1 (de) * 1978-07-07 1980-01-24 Kroenert Max Maschf Vorrichtung zum beschichten laufender bahnen
CH663362A5 (de) * 1984-01-07 1987-12-15 Jagenberg Ag Vorrichtung zum beschichten von ueber eine stuetzwalze laufenden materialbahnen mit regelbarer auftragsstaerke.
DE3616645A1 (de) * 1986-05-16 1987-11-19 Voith Gmbh J M Streicheinrichtung
US5497702A (en) * 1991-11-26 1996-03-12 Namic B.V. Ink chamber doctor blade for an inking unit
DE4138807C1 (en) * 1991-11-26 1993-06-03 Cornelis Wapenveld Nl Gorter Colour chamber doctor - is for colour-transfer, screened circular cylindrical body such as screen roller or engraved cylinder
US5599392A (en) * 1995-07-24 1997-02-04 Beloit Technologies, Inc. Rod holder with separate positionable contact elements for rod metering
US5824369A (en) * 1996-06-24 1998-10-20 Beloit Technologies, Inc. Method and apparatus for coating a traveling paper web
DE19934441A1 (de) * 1999-07-22 2001-01-25 Voith Paper Patent Gmbh Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE29922546U1 (de) * 1999-12-22 2000-02-17 Roland Man Druckmasch Dosiersystem für Beschichtungsflüssigkeiten in einer Beschichtungseinheit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29917979U1 (de) 1999-10-12 2000-01-27 Kroenert Max Maschf Druckkammerrakel zum Auftragen eines Mediums auf eine Walze

Also Published As

Publication number Publication date
US6872257B2 (en) 2005-03-29
DE10164773A1 (de) 2003-07-17
EP1287907B1 (fr) 2007-06-06
US20030084842A1 (en) 2003-05-08
DE10143077B4 (de) 2005-06-23
DE10143077A1 (de) 2003-05-22
EP1287907A3 (fr) 2005-07-13
DE50210263D1 (de) 2007-07-19
ATE363949T1 (de) 2007-06-15

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