EP1818450A1 - Dispositif de revêtement par rideau - Google Patents

Dispositif de revêtement par rideau Download PDF

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Publication number
EP1818450A1
EP1818450A1 EP06125085A EP06125085A EP1818450A1 EP 1818450 A1 EP1818450 A1 EP 1818450A1 EP 06125085 A EP06125085 A EP 06125085A EP 06125085 A EP06125085 A EP 06125085A EP 1818450 A1 EP1818450 A1 EP 1818450A1
Authority
EP
European Patent Office
Prior art keywords
iii
linear guide
assembly
curtain
guide
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
EP06125085A
Other languages
German (de)
English (en)
Other versions
EP1818450B1 (fr
Inventor
Bernd-Uwe Stellner
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1818450A1 publication Critical patent/EP1818450A1/fr
Application granted granted Critical
Publication of EP1818450B1 publication Critical patent/EP1818450B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D21H23/48—Curtain coaters

Definitions

  • the invention relates to a curtain application device for applying a liquid to pasty application medium, such as coating color, on a running paper, cardboard or other fibrous web in machines for producing or finishing the fibrous web, the curtain applicator of several assemblies, such as curtain Application nozzle, start gutter, drip pan, air boundary layer control device consists.
  • curtain coaters are to be increasingly used.
  • no components of the applicator touch the sensitive web, which is also an advantage of the device.
  • the curtain applicator which in particular the o.g. Having components, the medium to be applied in the form of a free-falling curtain, which falls from the assembly application nozzle, delivered to the fibrous web.
  • This assembly and the assembly air boundary layer control device, starting chute and possibly a suction roller leading the web (in case of coming from above web guide) are arranged above the fibrous web, while assemblies such as gutter and Bahnleitieri are arranged below. All modules or parts of the modules are, so to speak, machine-width (ie at least as wide as a sheet) and can therefore reach widths of 10 m and more, which in turn is associated with correspondingly high weights.
  • the invention is therefore based on the object to provide a curtain application device in which the individual components of the device are easily and quickly accessible.
  • the object is achieved in that at least one individual assembly forms a displacement unit by being arranged on a linear guide and is displaceable in the machine longitudinal direction from an operating position to a service position and back so that arises between individual desired assemblies a walk-in space for service personnel.
  • An advantageous embodiment of the device may consist in that each module or each displacement unit has its own linear guide. Under displacement unit so every component of the relevant assembly to understand, which is moved in the translational movement with.
  • the support body for the web guiding element, the gutter and the starting gutter called.
  • the curtain nozzle should always be displaceable. As a result, it can always remain in the same vertical operative position, so that better casting effects, ie effects for the stable formation of the curtain when dispensing the application medium, result than would be the case with the nozzle swiveled. It has been found that not every angle between the delivered curtain and the outlet nozzle is optimal. With a vertically directed vertical curtain can be generated without any backflow effects.
  • At least one of the displacement units has at least one displaceable subassembly, which in turn is arranged on a linear guide and this linear guide is connected to the displacement unit.
  • the purpose of this embodiment is to make the subassembly movable separately from the parent assembly.
  • An example of this is the curtain application nozzle.
  • the entire nozzle can be hung on a linear guide and can thus be brought or pushed into the desired position.
  • the nozzle is usually made of two half-shells for various reasons (easier production, better cleaning ability).
  • the half shells or nozzle halves are suspended on separate linear guides on the application head and can also be moved in addition to the possible displacement of the application head or the overall nozzle.
  • the linear guide In the context of the invention, it is proposed to manufacture the linear guide from two mutually parallel guide rails and four guide carriage with rolling elements. Such a linear guide is maintenance-free.
  • the linear guide according to the invention allows a manual displacement, despite the high weight of often over 10m wide components or assemblies.
  • linear guide can be designed both as a hydrostatic bearing and as an air bearing.
  • the modules or the displacement units can be fixed in their operating positions and their shifted end ie service positions for functional and safety reasons.
  • assemblies or displacement units can be moved manually as described above, but also by motor.
  • the device according to the invention has the advantage that between the individual assemblies or displacement units a sufficiently good accessibility is ensured with the smallest space for the applicator.
  • the sliding units only have to be pushed apart so far that the desired access becomes free. If more space is required, all gaps can be made accessible. In any case, one achieves only a small risk potential. Due to the selected linear guides a slight actuation is possible. End positions of the modules or individual components are arbitrary and then fixed. When intentional falling web guide fine adjustments of the web inclination are also possible for the first time due to the good accessibility of components.
  • FIGS. 1 to 5 show a schematic representation of one and the same invention curtain coating device with different set positions of the individual modules to each other
  • FIG. 1 shows a curtain application device in the operating position of the assemblies and with retracted fibrous web to be coated, with the aid of which the structure of the device is to be explained.
  • the curtain applicator which may also be referred to as a curtain applicator or curtain coater, is shown in side view, i. from the driver or the drive side, with a view to the transverse position of a manufacturing or refining or coating machine shown.
  • the curtain applicator consists of several modules. In essence, these are assemblies I to IV, assembly I representing a curtain application head 1 with an application nozzle 2 and a curtain 3 dispensed from this application nozzle on application medium M.
  • the assembly II is a Lucasgrenz für- fighting device 4, which sucks, for example, the entrained with the high-speed fibrous web B air boundary layer and thereby keeps them away from the job site O represent.
  • the assembly III consists of a support body 5 for an existing drip tray 6 for collecting the application medium M and the curtain 3, if no fibrous web is retracted, the application nozzle 2 but still dispenses application medium.
  • the support body 5 also serves as a support for a Bahnleitelement 7, for example, a so-called TopTurn, which feeds the fibrous web B to the job site O.
  • the assembly IV also consists of a supporting body 8 for a so-called starting gutter 9. This starting gutter 9 is at the same time a gutter for catching the already or still ongoing curtain at the beginning and the completion of the order process.
  • the application nozzle 2 is made of two half-shells 2.1 and 2.2 and thus represents, so to speak, a subassembly V.
  • the individual assemblies I, II, III, IV, V form displacement units, i. the components belonging to an assembly are moved together. This is done by the respective modules or displacement units are arranged on commercially available either equipped with rolling or working on hydrostatic or air bearing linear guides.
  • the arrangement is such that linear guides 10, on which the respective assemblies III and IV rest and slide, are mounted below the fibrous web B on the machine base 11.
  • linear guides 12 are present, where the assemblies I and II are suspended and slide. These linear guides 12 are therefore located above the fibrous web B and are attached to longitudinal beams 13 of the machine.
  • the said assemblies or displacement units I to V can thereby be displaced in a simple manner in the machine longitudinal direction MD horizontally from the operating position shown in FIG. 1 into various service positions, as shown in FIGS. 2 to 5 , and back to the operating position shown in FIG. This is done in such a way that between the said individual assemblies I to IV, a space or passageway accessible to service personnel P or, in the case of assembly V for cleaning or maintenance or the like of the half-shells 2.1 and 2.2, the necessary free space is available.
  • further linear guides 14 are mounted on the assembly I and the curtain application head 1.
  • subassemblies III and IV are arranged on a common linear guide, namely linear guide 10
  • subassemblies I and II are arranged on the common linear guide 12.
  • the linear guides 10, 12 and 14 each consist of two parallel to each other and in the machine direction MD extending guide rails 15, on which or to the movability of the modules I to V four guide carriage 16 slide or roll over rolling elements, not shown.
  • FIG. 2 illustrates how an access or passage for the service personnel P is created for the air boundary layer control device 4 of the assembly II remaining in place.
  • the assembly I were moved to the right, as well as the assemblies II and IV also to the right and in such a way that all the application nozzle 2 is exactly above the drip pan 6 and optionally trailing application medium M can catch without polluting the machine.
  • FIG. 3 shows an access to the application head 1 created for the service personnel P.
  • the assemblies II, III and IV have remained unchanged. Only the assembly I was moved including its application head 1 to the right and also pushed the subassembly V with their half shells 2.1 and 2.2 of the application nozzle 2 apart. In this case, the displacement was carried out so that the opened application nozzle is located exactly above the starting channel 9, whereby cleaning medium can be collected.
  • FIG. 4 shows a created access to the web guiding element 7.
  • the assembly III is moved below the assembly II to the left.
  • the assembly IV is shifted to the right so that the passage becomes sufficiently large for the service personnel P.
  • the assembly I so the application head 1 is located still in its operating position, but could also be moved to the desired extent.
  • Figure 5 shows the creation of more than one gap.
  • all modules are pushed apart, so that the staff P well-negotiable open spaces are available for service purposes, which also occupational safety is increased.
  • the air boundary layer control device 4 ie assembly II instead of sliding on a linear guide 11, may also be pivotally supported about a pivot point 16.
  • the displacement of the individual modules on or on the linear guides 10, 12, 14 can preferably be done electrically saving energy even with large machine widths of about 10 m and more manually, but of course also possible by motor means.
  • the linear guides allow this because they overcome friction, but not the entire weight of the assemblies, as in pivoting movements.
  • the arrangements also allow a circulation of application medium to be maintained in the service position of the individual assemblies I to V, ie during a maintenance or cleaning operation. This prevents drying and deposits on all medium-carrying components.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Saccharide Compounds (AREA)
  • Bearings For Parts Moving Linearly (AREA)
EP06125085A 2006-02-10 2006-11-30 Dispositif de revêtement par rideau Not-in-force EP1818450B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006006157A DE102006006157A1 (de) 2006-02-10 2006-02-10 Vorhang-Auftragsvorrichtung

Publications (2)

Publication Number Publication Date
EP1818450A1 true EP1818450A1 (fr) 2007-08-15
EP1818450B1 EP1818450B1 (fr) 2009-04-08

Family

ID=38181132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06125085A Not-in-force EP1818450B1 (fr) 2006-02-10 2006-11-30 Dispositif de revêtement par rideau

Country Status (3)

Country Link
EP (1) EP1818450B1 (fr)
AT (1) ATE428023T1 (fr)
DE (2) DE102006006157A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2085516A3 (fr) * 2008-01-28 2010-01-27 Voith Patent GmbH Dispositif d'amélioration des conditions de travail du personnel de service d'un dispositif de brossage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444163A1 (fr) 2010-10-23 2012-04-25 Andreas Otto Buse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19823686A1 (de) * 1997-05-28 1999-01-07 Mitsubishi Paper Mills Ltd Verfahren und Einrichtung zum Florstreichen
EP0974403A2 (fr) * 1998-07-22 2000-01-26 Fuji Photo Film Co., Ltd. Procédé et appareil de revêtement
DE20320514U1 (de) 2003-10-22 2004-10-28 Voith Paper Patent Gmbh Maschine zum Auftragen eines flüssigen oder pastösen Auftragsmediums auf die Oberfläche einer laufenden Materialbahn
WO2006008336A1 (fr) * 2004-07-20 2006-01-26 Metso Paper, Inc. Unite et procede de couchage par voile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19823686A1 (de) * 1997-05-28 1999-01-07 Mitsubishi Paper Mills Ltd Verfahren und Einrichtung zum Florstreichen
EP0974403A2 (fr) * 1998-07-22 2000-01-26 Fuji Photo Film Co., Ltd. Procédé et appareil de revêtement
DE20320514U1 (de) 2003-10-22 2004-10-28 Voith Paper Patent Gmbh Maschine zum Auftragen eines flüssigen oder pastösen Auftragsmediums auf die Oberfläche einer laufenden Materialbahn
WO2006008336A1 (fr) * 2004-07-20 2006-01-26 Metso Paper, Inc. Unite et procede de couchage par voile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2085516A3 (fr) * 2008-01-28 2010-01-27 Voith Patent GmbH Dispositif d'amélioration des conditions de travail du personnel de service d'un dispositif de brossage

Also Published As

Publication number Publication date
EP1818450B1 (fr) 2009-04-08
DE502006003375D1 (de) 2009-05-20
ATE428023T1 (de) 2009-04-15
DE102006006157A1 (de) 2007-08-16

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