EP0831973A1 - Supporting system for the metering component of a coating device - Google Patents

Supporting system for the metering component of a coating device

Info

Publication number
EP0831973A1
EP0831973A1 EP97921793A EP97921793A EP0831973A1 EP 0831973 A1 EP0831973 A1 EP 0831973A1 EP 97921793 A EP97921793 A EP 97921793A EP 97921793 A EP97921793 A EP 97921793A EP 0831973 A1 EP0831973 A1 EP 0831973A1
Authority
EP
European Patent Office
Prior art keywords
tongues
support system
front edge
tongue
bellows
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
EP97921793A
Other languages
German (de)
French (fr)
Other versions
EP0831973B1 (en
Inventor
Reinhard Knop
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
Jagenberg Papiertechnik 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 Jagenberg Papiertechnik GmbH filed Critical Jagenberg Papiertechnik GmbH
Publication of EP0831973A1 publication Critical patent/EP0831973A1/en
Application granted granted Critical
Publication of EP0831973B1 publication Critical patent/EP0831973B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/041—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades
    • B05C11/042—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades allowing local positioning, loading or deforming along the blades
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades

Definitions

  • the invention relates to a support system for the metering element of a coating device, in particular for the doctor blade of a coating device for paper or cardboard webs, according to the preamble of claim 1.
  • the known coating devices for paper or cardboard webs have an applicator (roller or nozzle applicator) with which the coating material, eg. B. coating color, is applied in excess to the web.
  • WO93 / 05887 a generic support system is known, in which the doctor blade is supported by a flat bar, which is continuous in the area of its front edge abutting the doctor blade and has a series of longitudinal slots so that it is sufficient is flexible in order to be able to set different pressures on the doctor blade.
  • a lever which can be actuated by means of a pneumatic bellows, engages on each tongue between two slots and can be used to individually deform this region of the support strip in the direction of the scraper knife in order to set a specific contact pressure.
  • the invention has for its object to improve a generic support system so that structurally simple locally different contact pressures can be set against a metering element.
  • the protective strip according to the invention consists of a spring plate which has a series of longitudinal slots.
  • the tongues formed in this way are clamped on their side facing away from the metering element, while the continuous front edge is movably supported between guide strips in the direction of the metering element.
  • Adjustment elements act on the tongues and cause a bending perpendicular to the plane of extent of the tongues. Bending a tongue perpendicular to its plane of extension leads to a change in the effective length, which, due to the clamping on one side and guidance on the other side, has the effect of changing the course of the leading edge at the corresponding point.
  • the contact pressure of the support bar on the dosing element can be changed in this area.
  • Another object of the invention is to provide a control system which, in a support system according to the invention, enables simple setting of a locally different contact pressure.
  • the contact pressure of the dosing element is generated in the support system by means of a series of pressure chambers.
  • Each pressure chamber is over one by means of a valve lockable line connected to a common pressure vessel which is connected to a compressed air supply via a controllable valve, in particular a proportional valve.
  • Fig. 1 shows a longitudinal section through a support system according to the invention.
  • FIG. 2 shows a top view of the support system according to FIG. 1.
  • Fig. 3 shows a longitudinal section through a support system with a displacement measuring device for each positioning tongue. 4 shows an enlarged section of FIG. 3.
  • Fig. 5 shows the principle of the control system for controlling the contact pressure.
  • the coating device has a driven counter roll 1, from which the material web 2 - a paper or cardboard web with a width of 8 m and more - is deflected. Excess coating material was applied to the web 2 by a coating unit (not shown), which is doctored down to the desired coating weight by a metering system with a metering element, preferably an elastically bendable doctor knife 3.
  • the scraper knife 3 is clamped with its foot in a clamping bar 4 which can be displaced in the direction of the counter roller 1 and is supported on its side facing away from the counter roller 1 below the scraper knife tip by a support bar 5 which is elastically flexible in the direction of the counter roller 1 within limits.
  • the support bar 5 is the essential part of the support system, which is fastened on the top of a scraper bar 6 pivotably mounted to the counter-roller 1, in which the clamping bar 4 with the scraper knife 3 is also mounted.
  • the support bar 5 consists of a thin spring plate of 0.5 mm-1.5 mm, preferably of approximately 1 mm, thickness and 200 mm-400 mm, preferably approximately 300 mm, the width of which is greater than that total working width, ie the maximum web width is sufficient.
  • the support bar 5 is comb-shaped with a continuous front edge 7 of 10 mm-70 mm, preferably about 40 mm, width and a series of tongues 8 separated by longitudinal slots, the number and spacing of which is selected such that the working width a tongue 8 is provided as an actuator every 50 mm-150 mm.
  • the tongues 8 preferably have a width of approximately 80 mm and are arranged at a distance of approximately 20 mm from one another.
  • the front edge 7 is sufficiently flexible in the direction of the doctor knife 3 (arrow 9 in FIG. 2) in order to be elastically deformable by moving a tongue 8 in this direction.
  • the fastening and adjusting mechanism for the support bar 5 is shown in greater detail in FIGS. 1 and 3 for two embodiments:
  • a lower clamping plate 9 which extends over the entire working width, is fastened on the scraper bar 6 and is lowered somewhat in its central region towards the scraper bar 6.
  • a second clamping plate 10 is arranged, which in its central region runs approximately opposite to the lower clamping plate 9, so that a cavity is formed between the plates 9, 10, in which a number of adjusting elements are arranged can.
  • the support bar 5 is arranged between the two clamping plates 9, 10 so that the tongues 8 through the cavity to the ends of the scraper knife 3 facing away Extend clamping plates 9, 10.
  • the clamping plates 9, 10 run parallel one above the other and thus form two clamping strips between which the ends of the tongues 8 are clamped.
  • the clamping plates 9, 10 also run parallel and thus form guide strips 11, 12 for the front edge 7 of the support strip located in this area.
  • the guide strips 11, 12 are held at a distance from one another by setscrews 13 which is somewhat larger than the thickness of the support strip 5, so that the front edge 7 of the support strip protruding somewhat from the guide strips 11, 12 in the direction of the scraper knife 3 and back is movable between them.
  • an adjusting element engages on each tongue 8, with which the respective tongue 8 can be bent perpendicular to its plane of extension.
  • a bend of a tongue perpendicular to the plane of extension leads to a change in the effective length, which as a result of the clamping on one side and guidance on the other side changes the course of the Front edge 7 affects at the appropriate point; d. H. the contact force of the support bar 5 on the scraper knife is changed in this area.
  • a bellows 14 is arranged beneath each tongue 8 in the central area of the clamping plates 9, 10, which bellows is supported on the lower clamping plate 9 and which can be pressurized with compressed air via a feed 15, so that the tongue 8 bends upwards cause.
  • Each tongue 8 is pressed down on the bellows 14 assigned to it by a compression spring 16 against the bellows 14, which is attached to the upper clamping plate 10.
  • a holding plate 17 is fastened to the lower end of the spring 16 and presses against the tongue 8.
  • the compressive stress of the spring 16 can be adjusted by means of an adjusting screw 18.
  • the adjusting element (bellows 14, spring 16) can also be arranged in a mirror image of the plane of extension.
  • the bellows 14 are then above, the springs 16 below the tongues 8.
  • the guide strips 11, 12 are designed as separate components from the clamping plates 9, 10 and are screwed to them.
  • the compression springs 16 press directly against the tongues 8 without an intermediate holding plate.
  • a displacement measuring device from which the movement of the respective one Tongue 8 is measured from a reference position in the direction of the doctor knife 3 and back.
  • the displacement measuring devices are preferably arranged in the region of the two guide rails 11, 12, where the tongues 8 are guided against bending and are measured close to the front edge 7. At this point, the measuring devices measure the displacement of the front edge 7 in the direction of the doctor knife 3, unaffected by hysteresis effects.
  • the displacement measuring devices are arranged within the guide strips 11, 12 in a cavity 24 which extends across the working width and through which the tongues 8 are guided.
  • a measuring bolt 25 is screwed to each tongue 8 and extends vertically upwards, which is also displaced when the tongue 8 is displaced.
  • the measuring pin 25 has on its rear side facing away from the knife 3 (left in FIG. 4) a flat side surface against which an axially displaceably mounted measuring pin 26 is pressed with its end face by a spring.
  • the measuring pin 25 thus transmits a movement of the tongue 8 to the measuring pin 26.
  • the measuring pin 26 moves with its end facing away from the measuring pin 25 in a magnetic coil 27 and thus changes its inductance depending on its position.
  • the position measuring devices 25, 26, 27 can thus be used to determine and reproduce the position of each tongue 8 directly in front of the front edge 7 of the support strip 5 and thus the position of the front edge 7 itself in the respective adjustment range. For example, When the coating device is restarted, once again find a position of the support strip 5 in the individual areas of its front edge 7 that has been found to be advantageous.
  • each bellows 14 presses its tongue 8 up to half the vertical adjustment path against the force of the associated spring 17.
  • This shown in Figure 3 with solid lines Drawn position makes it possible to either push each tongue 8 further up to pull the front edge 7 of the support bar 5 away from the doctor blade 3 in this area, or to lower the pressure in the bellows 14, so that the compression spring 17 moves the tongue 8 downwards presses and so in this area presses the front edge 7 in the direction of the scraper knife 3 so that the contact pressure increases in this area. If there is an uneven cross profile in the coat weight during coating, the pressure of the support bar 5 against the scraper knife 3 can be increased or decreased in the corresponding areas by changing the pressures in the corresponding bellows 14 until a uniform coat profile is present.
  • FIG. 4 schematically shows the control system with which the desired pressure can be set in each bellows 14 with a minimum number of control elements.
  • This system can be used not only in a support system according to the invention, but also in other systems in which a number of pressure chambers are to be subjected to different pressures.
  • its use is also advantageous in coating devices with a metering system which contains a doctor rod as a metering element which is supported by a pressure hose which is divided into individual pressure chambers across the working width.
  • a coating device is described in DE-PS 43 41 341.
  • the control system consists of a common compressed air tank 19, which is connected to a compressed air supply 21 via a controllable valve 20, preferably a proportional valve. A desired pressure can be set in the container 19 via the valve 20.
  • a line 22 branches from the container 19 to each pressure chamber to be pressurized with compressed air, in the present example to each bellows 14, in which a simple open / close valve 23 is arranged.
  • a simple open / close valve 23 By opening a valve 23, the associated pressure chamber (bellows 14) can be set to a pressure corresponding to the container 19.
  • the setting of the individual pressures in the bellows 14 is now carried out in such a way that the average pressure (eg 3 bar) is first set via the proportional valve 20 in the container 19, the valves 23 to the bellows 14 being open.
  • the average pressure eg 3 bar
  • the valves 23 to the bellows 14 being open.
  • the front edge 7 of the support bar therefore bears against the scraper knife 3 with a medium contact pressure.
  • the valves 23 between the container 19 and the bellows 14 are then closed.
  • the contact pressure of the support bar 5 against the scraper knife 3 must be reduced in these areas if the scraper knife 3 operates in the so-called Ridgid Blade mode. This takes place in such a way that the pressure in the container 19 is first increased to such an extent that a corresponding pressure in a bellows 14 would cause the tongue 8 to be deflected upward.
  • the valves 23 of the bellows 14 are then opened in the areas with a coating weight that is too low.
  • the increased pressure in the corresponding bellows 14 leads to a deflection of the corresponding tongues 8 upwards and thus to a lowering of the contact pressure of the doctor knife 3 in these areas, since the tongues 8 move the leading edge 7 of the support bar 5 from the doctor knife 3 when moving upwards move away.
  • the pressure in the container 19 is first reduced to the required value.
  • the pressure in the desired bellows 14 is then lowered to the lower value in the container 19 by opening the corresponding valves 23.
  • the lower pressure in a bellows 14 means that the compression spring 17 presses the respective tongue 8 down and thus the front edge 7 of the support bar 5 in the direction of the scraper knife 3. This leads to an increased contact pressure of the doctor knife 3 and thus to a lower coating weight in this area.

Landscapes

  • Coating Apparatus (AREA)
  • Prostheses (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Abstract

Prior art systems for supporting the metering component (3) of a coating device include a flat strip (5) as the support, the front edge (7) region of which is continuous and has a series of longitudinal slots. A set of adjusting components engage with the tongues (8) between the slots. According to the invention, the supporting strip (8) is made of spring sheet steel, the tongues (8) are firmly clamped at their end away from the metering component (3) and the continuous front edge (7) is fitted movably towards the metering component (3) between guide strips (11, 12). The adjusters (14, 17) engaging with the tongues (8) produce a flexion perpendicular to the extension plane of the tongues (8).

Description

B E S C H R E I B U N G DESCRIPTION
Abstützsystem für das Dosierelement einer BeschichtungsvorrichtungSupport system for the dosing element of a coating device
Technisches GebietTechnical field
Die Erfindung betrifft ein Abstützsystem für das Dosierelement einer Beschichtungsvorrich¬ tung, insbesondere für das Schabermesser einer Beschichtungsvorrichtung für Papier- oder Kartonbahnen, gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a support system for the metering element of a coating device, in particular for the doctor blade of a coating device for paper or cardboard webs, according to the preamble of claim 1.
Die bekannten Beschichtungsvorrichtungen für Papier- oder Kartonbahnen weisen ein Auf¬ tragwerk (Walzen- oder Düsenauftragwerk) auf, mit dem das Beschichtungsmaterial, z. B. Streichfarbe, im Überschuß auf die Bahn aufgebracht wird. Ein im Anschluß an das Auf¬ tragwerk angeordnetes Dosiersystem mit einem Dosierelement räkelt den Überschuß bis auf das gewünschte Strichgewicht ab. Die Einstellung des Strichgewichts erfolgt über den An¬ preßdruck des Dosierelements an die Bahn, die in diesem Bereich von einer Gegenwalze abgestützt wird.The known coating devices for paper or cardboard webs have an applicator (roller or nozzle applicator) with which the coating material, eg. B. coating color, is applied in excess to the web. A metering system with a metering element arranged after the applicator unit rolls the excess down to the desired coat weight. The coating weight is adjusted via the contact pressure of the metering element against the web, which is supported in this area by a counter roller.
Stand der TechnikState of the art
Beim Beschichten von Papier- oder Kartonbahnen treten produktionsbedingte Schwankun¬ gen im Querprofil der Bahnen auf, die es erforderlich machen, den Anpreßdruck des Do¬ sierelements über die Arbeitsbreite lokal unterschiedlich einzustellen, um einen gleichmäßi¬ gen Strich zu erhalten. Beim Einsatz eines Schabermessers als Dosierelement wird dieses von einer unterhalb seiner Spitze anliegenden Abstützleiste an seiner Rückseite abgestützt, die in Grenzen biegbar ist und mittels Zug- und Druckschrauben entlang der Unterstüt¬ zungslinie einjustiert werden kann, je nachdem, ob das Strichgewicht an den entsprechen¬ den Stellen zu hoch oder zu niedrig ist (DE-C 28 25 907). Aus der WO93/05887 ist ein gattungsgemäßes Abstützsystem bekannt, bei dem das Scha¬ bermesser von einer flachen Leiste abgestützt wird, die im Bereich ihrer an dem Schaber¬ messer anliegenden Vorderkante durchgehend ausgebildet ist und eine Reihe von Längs- schlitzen aufweist, damit sie ausreichend flexibel ist, um unterschiedliche Drücke am Scha¬ bermesser einstellen zu können. An jeder Zunge zwischen zwei Schlitzen greift ein mittels eines Pneumatikbalgs betätigbarer Hebel an, mit dem sich dieser Bereich der Abstützleiste individuell in Richtung zum Schabermesser verformen läßt, um einen bestimmten Anpre߬ druck einzustellen. Darstellung der ErfindungWhen coating paper or cardboard webs, there are production-related fluctuations in the transverse profile of the webs, which make it necessary to set the contact pressure of the metering element locally differently over the working width in order to obtain a uniform line. When a scraper knife is used as a metering element, it is supported on its rear side by a support bar lying below its tip, which can be bent to a limited extent and can be adjusted along the support line by means of tension and pressure screws, depending on whether the coat weight corresponds to the the digits is too high or too low (DE-C 28 25 907). From WO93 / 05887 a generic support system is known, in which the doctor blade is supported by a flat bar, which is continuous in the area of its front edge abutting the doctor blade and has a series of longitudinal slots so that it is sufficient is flexible in order to be able to set different pressures on the doctor blade. A lever, which can be actuated by means of a pneumatic bellows, engages on each tongue between two slots and can be used to individually deform this region of the support strip in the direction of the scraper knife in order to set a specific contact pressure. Presentation of the invention
Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Abstützsystem so zu ver¬ bessern, daß konstruktiv einfach lokal unterschiedliche Anpreßdrücke gegen ein Dosierele¬ ment eingestellt werden können.The invention has for its object to improve a generic support system so that structurally simple locally different contact pressures can be set against a metering element.
Um diese Aufgabe zu lösen, besteht die Absützleiste nach der Erfindung aus einem Feder¬ blech, das eine Reihe von Längsschlitzen aufweist. Die so gebildeten Zungen sind an ihrer dem Dosierelement abgewandten Seite festgeklemmt, während die durchgehende Vorder¬ kante zwischen Führungsleisten in Richtung zum Dosierelement beweglich gelagert ist. An den Zungen greifen Verstellelemente an, die eine Verbiegung senkrecht zur Erstrek- kungsebene der Zungen bewirken. Eine Verbiegung einer Zunge senkrecht zu ihrer Er- streckungsebene führt zu einer Änderung der wirksamen Länge, die sich aufgrund der Klemmung an der einen Seite und Führung an der anderen Seite als Veränderung des Ver¬ laufs der Vorderkante an der entsprechenden Stelle auswirkt. So läßt sich die Anpresskraft der Abstützleiste an dem Dosierelement in diesem Bereich ändern.To achieve this object, the protective strip according to the invention consists of a spring plate which has a series of longitudinal slots. The tongues formed in this way are clamped on their side facing away from the metering element, while the continuous front edge is movably supported between guide strips in the direction of the metering element. Adjustment elements act on the tongues and cause a bending perpendicular to the plane of extent of the tongues. Bending a tongue perpendicular to its plane of extension leads to a change in the effective length, which, due to the clamping on one side and guidance on the other side, has the effect of changing the course of the leading edge at the corresponding point. The contact pressure of the support bar on the dosing element can be changed in this area.
Eine weitere Aufgabe der Erfindung besteht darin, ein Steuersystem bereitzustellen, das bei einem erfindungsgemäßen Abstützsystem eine einfache Einstellung eines lokal unterschied¬ lichen Anpreßdrucks ermöglicht.Another object of the invention is to provide a control system which, in a support system according to the invention, enables simple setting of a locally different contact pressure.
Zur Lösung dieser Aufgabe wird beim dem Abstützsystem der Anpressdruck des Dosiere¬ lements mittels einer Reihe von Druckkammern erzeugt. Jede Druckkammer ist über eine mittels eines Ventils abschließbare Leitung mit einem gemeinsamen Druckbehälter verbun¬ den, der über ein steuerbares Ventil, insbesondere eine Proportionalventil, an einer Druck¬ luftzufuhr angeschlossen ist.To achieve this object, the contact pressure of the dosing element is generated in the support system by means of a series of pressure chambers. Each pressure chamber is over one by means of a valve lockable line connected to a common pressure vessel which is connected to a compressed air supply via a controllable valve, in particular a proportional valve.
Die Unteransprüche enthalten bevorzugte, da besonders vorteilhafte Ausgestaltungen der Erfindung.The subclaims contain preferred, since particularly advantageous, embodiments of the invention.
Kurze Beschreibung der ZeichnungBrief description of the drawing
Die Zeichnung dient zur Erläuterung der Erfindung anhand vereinfacht dargestellter Aus- führungsbeispiele:The drawing serves to explain the invention on the basis of simplified exemplary embodiments:
Fig. 1 zeigt einen Längsschnitt durch ein Abstützsystem nach der Erfindung.Fig. 1 shows a longitudinal section through a support system according to the invention.
Fig. 2 zeigt eine Draufsicht auf das Abstützsystem nach Figur 1.FIG. 2 shows a top view of the support system according to FIG. 1.
Fig,3 zeigt einen Längsschnitt durch ein Abstützsystem mit einer Wegmeßeinrichtung für jede Stellzunge. Fig.4 zeigt einen vergrößerten Ausschnitt von Figur 3.Fig. 3 shows a longitudinal section through a support system with a displacement measuring device for each positioning tongue. 4 shows an enlarged section of FIG. 3.
Fig. 5 zeigt das Prinzip des Steuersystems zur Steuerung des Anpreßdrucks.Fig. 5 shows the principle of the control system for controlling the contact pressure.
Wege zur Ausführung der ErfindungWays of Carrying Out the Invention
Die Beschichtungsvorrichtung weist eine angetriebene Gegenwalze 1 auf, von der die Ma- terialbahn 2 -eine Papier- oder Kartonbahn von einer Breite von 8m und mehr- umgelenkt wird. Auf die Bahn 2 wurde von einem nicht dargestellten Auftragwerk Beschichtungsma- terial im Überschuß aufgetragen, das von einem Dosiersystem mit einem Dosierelement, bevorzugt einem elastisch verbiegbaren Schabermesser 3, bis auf das gewünschte Strich¬ gewicht abgerakelt wird. Das Schabermesser 3 ist mit seinem Fuß in einem in Richtung zur Gegenwalze 1 verschiebbaren Klemmbalken 4 festgeklemmt und wird an seiner der Gegen¬ walze 1 abgewandten Seite unterhalb der Schabermesserspitze von einem in Richtung zur Gegenwalze 1 in Grenzen elastisch biegsamen Abstützleiste 5 abgestützt. Durch eine relative Verschiebung des Klemmbalkens 4 zu der sich über die gesamte Bahnbreite erstreckenden Abstützleiste 5 läßt sich der Anpreßdruck des Schabermessers 3 an die Gegenwalze 1 ein¬ stellen.The coating device has a driven counter roll 1, from which the material web 2 - a paper or cardboard web with a width of 8 m and more - is deflected. Excess coating material was applied to the web 2 by a coating unit (not shown), which is doctored down to the desired coating weight by a metering system with a metering element, preferably an elastically bendable doctor knife 3. The scraper knife 3 is clamped with its foot in a clamping bar 4 which can be displaced in the direction of the counter roller 1 and is supported on its side facing away from the counter roller 1 below the scraper knife tip by a support bar 5 which is elastically flexible in the direction of the counter roller 1 within limits. By a relative Shifting the clamping bar 4 to the support bar 5 extending over the entire width of the web, the contact pressure of the scraper knife 3 against the counter roller 1 can be adjusted.
Die Abstützleiste 5 ist der wesentliche Teil des Abstützsystems, das auf der Oberseite eines auf bekannte Weise schwenkbar zur Gegenwalze 1 gelagerten Schaberbalkens 6 befestigt ist, in dem auch der Klemmbalken 4 mit dem Schabermesser 3 gelagert ist. Die Abstützlei¬ ste 5 besteht aus einem dünnen Federblech von 0,5 mm-1,5 mm, bevorzugt von ca. 1 mm, Dicke und 200 mm-400 mm, bevorzugt ca. 300 mm, Breite, das in seiner Länge über die gesamte Arbeitsbreite, i.e. die maximale Bahnbreite, reicht. Die Abstützleiste 5 ist kamm- förmig mit einer durchgehenden Vorderkante 7 von 10 mm-70 mm, bevorzugt ca. 40 mm, Breite und einer Reihe von durch Längsschlitze getrennten Zungen 8 ausgebildet, deren Anzahl und Abstand voneinander so gewählt ist, daß über die Arbeitsbreite alle 50 mm- 150 mm eine Zunge 8 als Stellglied vorhanden ist. Bevorzugt weisen die Zungen 8 eine Breite von ca. 80 mm auf und sind in einem Abstand von ca. 20 mm voneinander angeordnet.The support bar 5 is the essential part of the support system, which is fastened on the top of a scraper bar 6 pivotably mounted to the counter-roller 1, in which the clamping bar 4 with the scraper knife 3 is also mounted. The support bar 5 consists of a thin spring plate of 0.5 mm-1.5 mm, preferably of approximately 1 mm, thickness and 200 mm-400 mm, preferably approximately 300 mm, the width of which is greater than that total working width, ie the maximum web width is sufficient. The support bar 5 is comb-shaped with a continuous front edge 7 of 10 mm-70 mm, preferably about 40 mm, width and a series of tongues 8 separated by longitudinal slots, the number and spacing of which is selected such that the working width a tongue 8 is provided as an actuator every 50 mm-150 mm. The tongues 8 preferably have a width of approximately 80 mm and are arranged at a distance of approximately 20 mm from one another.
Durch diesen Aufbau ist die Vorderkante 7 in Richtung zum Schabermesser 3 hin (Pfeil 9 in Fig. 2) ausreichend flexibel, um durch eine Verschiebung einer Zunge 8 in diese Richtung elastisch verformt werden zu können.With this construction, the front edge 7 is sufficiently flexible in the direction of the doctor knife 3 (arrow 9 in FIG. 2) in order to be elastically deformable by moving a tongue 8 in this direction.
Der Befestigungs- und Verstellmechanismus für die Abstützleiste 5 ist in den Figuren 1 und 3 für zwei Ausführungsformen detaillierter dargestellt:The fastening and adjusting mechanism for the support bar 5 is shown in greater detail in FIGS. 1 and 3 for two embodiments:
Bei beiden Ausführungsformen ist auf dem Schaberbalken 6 eine sich über die gesamte Ar¬ beitsbreite erstreckende untere Klemmplatte 9 befestigt, die in ihrem mittleren Bereich et- was nach unten -in Richtung zum Schaberbalken 6- abgesenkt ist. Oberhalb der Klemmplat¬ te 9 ist eine zweite Klemmplatte 10 angeordnet, die in ihrem mittleren Bereich in etwa ent¬ gegengesetzt zur unteren Klemmplatte 9 gekrümmt verläuft, so daß ein Hohlraum zwischen den Platten 9, 10 entsteht, in den eine Reihe von Verstellelementen angeordnet werden können.In both embodiments, a lower clamping plate 9, which extends over the entire working width, is fastened on the scraper bar 6 and is lowered somewhat in its central region towards the scraper bar 6. Above the clamping plate 9, a second clamping plate 10 is arranged, which in its central region runs approximately opposite to the lower clamping plate 9, so that a cavity is formed between the plates 9, 10, in which a number of adjusting elements are arranged can.
Die Abstützleiste 5 ist zwischen den beiden Klemmplatten 9, 10 so angeordnet, daß sich die Zungen 8 durch den Hohlraum bis zu den dem Schabermesser 3 abgewandten Enden der Klemmplatten 9, 10 erstrecken. An diesem Ende verlaufen die Klemmplatten 9, 10 parallel übereinander und bilden so zwei Klemmleisten, zwischen denen die Enden der Zungen 8 festgeklemmt sind. An der entgegengesetzten Seite in der Nähe des Schabermessers 3 ver¬ laufen die Klemmplatten 9, 10 ebenfalls parallel und bilden so Führungsleisten 11, 12 für die in diesem Bereich befindliche Vorderkante 7 der Abstützleiste. Die Führungsleisten 11, 12 werden von Stellschrauben 13 in einem Abstand voneinander gehalten, der etwas größer als die Dicke der Abstützleiste 5 ist, so daß die etwas aus den Führungsleisten 11, 12 her¬ ausragende Vorderkante 7 der Abstützleiste in Richtung zum Schabermesser 3 und zurück beweglich zwischen ihnen gelagert ist.The support bar 5 is arranged between the two clamping plates 9, 10 so that the tongues 8 through the cavity to the ends of the scraper knife 3 facing away Extend clamping plates 9, 10. At this end, the clamping plates 9, 10 run parallel one above the other and thus form two clamping strips between which the ends of the tongues 8 are clamped. On the opposite side near the scraper knife 3, the clamping plates 9, 10 also run parallel and thus form guide strips 11, 12 for the front edge 7 of the support strip located in this area. The guide strips 11, 12 are held at a distance from one another by setscrews 13 which is somewhat larger than the thickness of the support strip 5, so that the front edge 7 of the support strip protruding somewhat from the guide strips 11, 12 in the direction of the scraper knife 3 and back is movable between them.
Im mittleren Bereich zwischen den Klemmplatten 9, 10 greift an jeder Zunge 8 ein Ver¬ stellelement an, mit dem sich die jeweilige Zunge 8 senkrecht zu ihrer Erstreckungsebene verbiegen läßt. Eine Verbiegung einer Zunge senkrecht zu der Erstreckungsebene (in den Figuren 1 und 3 nach oben oder unten) führt zu einer Änderung der wirksamen Länge, die sich aufgrund der Klemmung an der einen Seite und Führung an der anderen Seite als Ver¬ änderung des Verlaufs der Vorderkante 7 an der entsprechenden Stelle auswirkt; d. h. die Anpreßkraft der Abstützleiste 5 am Schabermesser wird in diesem Bereich geändert.In the central area between the clamping plates 9, 10, an adjusting element engages on each tongue 8, with which the respective tongue 8 can be bent perpendicular to its plane of extension. A bend of a tongue perpendicular to the plane of extension (upwards or downwards in FIGS. 1 and 3) leads to a change in the effective length, which as a result of the clamping on one side and guidance on the other side changes the course of the Front edge 7 affects at the appropriate point; d. H. the contact force of the support bar 5 on the scraper knife is changed in this area.
Unterhalb jeder Zunge 8 ist im mittleren Bereich der Klemmplatten 9, 10 ein Balg 14 ange- ordnet, der sich auf der unteren Klemmplatte 9 abstützt und der über eine Zufuhr 15 mit Druckluft beaufschlagt werden kann, um so eine Verbiegung der Zunge 8 nach oben zu bewirken. Jede Zunge 8 wird auf den ihr zugeordneten Balg 14 von einer Druckfeder 16 nach unten gegen den Balg 14 gedrückt, die an der oberen Klemmplatte 10 befestigt ist.A bellows 14 is arranged beneath each tongue 8 in the central area of the clamping plates 9, 10, which bellows is supported on the lower clamping plate 9 and which can be pressurized with compressed air via a feed 15, so that the tongue 8 bends upwards cause. Each tongue 8 is pressed down on the bellows 14 assigned to it by a compression spring 16 against the bellows 14, which is attached to the upper clamping plate 10.
Bei der Ausführungsform nach Figur 1 ist am unteren Ende der Feder 16 eine Halteplatte 17 befestigt, die gegen die Zunge 8 drückt. Die Druckspannung der Feder 16 läßt sich mit¬ tels einer Einstellschraube 18 einstellen.In the embodiment according to FIG. 1, a holding plate 17 is fastened to the lower end of the spring 16 and presses against the tongue 8. The compressive stress of the spring 16 can be adjusted by means of an adjusting screw 18.
Da eine Verbiegung der Zungen 8 senkrecht zu deren Erstreckungsebene bewirkt wird, können die Verstellelement (Balge 14, Feder 16) auch spiegelbildlich zu der Erstrek- kungsebene angeordnet werden. Dann befinden sich die Balge 14 oberhalb, die Federn 16 unterhalb der Zungen 8. Bei der Ausführungsform nach Figur 3 sind die Führungsleisten 11,12 als getrennte Bautei¬ le von den Klemmplatten 9,10 ausgebildet und an diesen festgeschraubt. Die Druckfedern 16 drücken ohne eine zwischengeordnete Halteplatte direkt gegen die Zungen 8. Zusätzlich ist für jede Zunge 8 im Bereich zwischen dem Verstellelement (Balg 14, Feder 16) und der durchgehenden Vorderkante 7 jeweils eine Wegmeßeinrichtung vorhanden, von der die Be¬ wegung der jeweiligen Zunge 8 aus einer Referenzposition in Richtung zum Schabermesser 3 und zurück gemessen wird. Bevorzugt sind die Wegmeßeinrichtungen im Bereich der beiden Führungschienen 11, 12 angeordnet, wo die Zungen 8 gegen ein Verbiegen gesichert geführt sind und nahe an der Vorderkante 7 gemessen wird. Die Meßeinrichtungen messen an dieser Stelle unbeeinflußt von Hystereseeffekten direkt die Verschiebung der Vorderkan¬ te 7 in Richtung zum Schabermessers 3.Since the tongues 8 are bent perpendicular to their plane of extension, the adjusting element (bellows 14, spring 16) can also be arranged in a mirror image of the plane of extension. The bellows 14 are then above, the springs 16 below the tongues 8. In the embodiment according to FIG. 3, the guide strips 11, 12 are designed as separate components from the clamping plates 9, 10 and are screwed to them. The compression springs 16 press directly against the tongues 8 without an intermediate holding plate. In addition, for each tongue 8 in the area between the adjusting element (bellows 14, spring 16) and the continuous front edge 7 there is in each case a displacement measuring device, from which the movement of the respective one Tongue 8 is measured from a reference position in the direction of the doctor knife 3 and back. The displacement measuring devices are preferably arranged in the region of the two guide rails 11, 12, where the tongues 8 are guided against bending and are measured close to the front edge 7. At this point, the measuring devices measure the displacement of the front edge 7 in the direction of the doctor knife 3, unaffected by hysteresis effects.
Bei der Ausführungsform nach Figur 3 und Figur 4 sind die Wegmeßeinrichtungen inner¬ halb der Führungsleisten 11, 12 in einem sich quer über die Arbeitsbreite erstreckenden Hohlraum 24 angeordnet, durch den die Zungen 8 geführt sind. An jeder Zunge 8 ist ein Meßbolzen 25 sich senkrecht nach oben erstreckend festgeschraubt, der so bei einer Ver¬ schiebung der Zunge 8 mit verschoben wird. Der Meßbolzen 25 weist an seiner dem Scha¬ bermesser 3 abgewandten Rückseite (in Figur 4 links) eine flache Seitenfläche auf, gegen die ein axial verschiebbar gelagerter Meßstift 26 mit seiner Stirnfläche von einer Feder ge- drückt wird. Der Meßbolzen 25 überträgt so eine Bewegung der Zunge 8 auf den Meßstift 26. Der Meßstift 26 bewegt sich mit seinem dem Meßbolzen 25 abgewandten Ende in einer Magnetspule 27 und verändert so in Abhängigkeit von seiner Position deren Induktivität.In the embodiment according to FIGS. 3 and 4, the displacement measuring devices are arranged within the guide strips 11, 12 in a cavity 24 which extends across the working width and through which the tongues 8 are guided. A measuring bolt 25 is screwed to each tongue 8 and extends vertically upwards, which is also displaced when the tongue 8 is displaced. The measuring pin 25 has on its rear side facing away from the knife 3 (left in FIG. 4) a flat side surface against which an axially displaceably mounted measuring pin 26 is pressed with its end face by a spring. The measuring pin 25 thus transmits a movement of the tongue 8 to the measuring pin 26. The measuring pin 26 moves with its end facing away from the measuring pin 25 in a magnetic coil 27 and thus changes its inductance depending on its position.
Mit den Wegmeßeinrichtungen 25,26,27 kann somit die Position jeder Zunge 8 unmittelbar vor der Vorderkante 7 der Abstützleiste 5 und somit die Position der Vorderkante 7 selbst in dem jeweiligen Stellbereich bestimmt und reproduziert werden. So läßt sich z.B. bei ei¬ nem Neustart der Beschichtungsvorrichtung eine einmal als vorteilhaft gefundene Position der Abstützleiste 5 in den einzelnen Bereichen ihrer Vorderkante 7 wieder einstellen.The position measuring devices 25, 26, 27 can thus be used to determine and reproduce the position of each tongue 8 directly in front of the front edge 7 of the support strip 5 and thus the position of the front edge 7 itself in the respective adjustment range. For example, When the coating device is restarted, once again find a position of the support strip 5 in the individual areas of its front edge 7 that has been found to be advantageous.
Bevorzugt wird vor Beginn der Beschichtung das Andrücksystem so eingestellt, daß jeder Balg 14 gegen die Kraft der zugehörigen Feder 17 seine Zunge 8 bis in die Hälfte des ver¬ tikalen Verstellweges nach oben drückt. Diese, in Figur 3 mit durchgezogenen Linien ge- zeichnete Position ermöglicht es, jede Zunge 8 entweder weiter nach oben zu drücken, um die Vorderkante 7 der Abstützleiste 5 in diesem Bereich vom Schabermesser 3 wegzuzie¬ hen, oder den Druck im Balg 14 abzusenken, so daß die Druckfeder 17 die Zunge 8 nach unten drückt und so in diesem Bereich die Vorderkante 7 in Richtung zum Schabermesser 3 drückt, damit sich der Anpreßdruck in diesem Bereich erhöht. Stellt sich beim Beschichten ein ungleichmäßiges Querprofil im Strichgewicht ein, so kann durch Änderung der Drücke in den entsprechenden Balgen 14 die Anpreßkraft der Abstützleiste 5 gegen das Schaber¬ messer 3 in den entsprechenden Bereichen erhöht oder vermindert werden, bis ein gleich¬ mäßiges Strichprofil vorliegt.Before the coating is started, the pressure system is preferably set such that each bellows 14 presses its tongue 8 up to half the vertical adjustment path against the force of the associated spring 17. This, shown in Figure 3 with solid lines Drawn position makes it possible to either push each tongue 8 further up to pull the front edge 7 of the support bar 5 away from the doctor blade 3 in this area, or to lower the pressure in the bellows 14, so that the compression spring 17 moves the tongue 8 downwards presses and so in this area presses the front edge 7 in the direction of the scraper knife 3 so that the contact pressure increases in this area. If there is an uneven cross profile in the coat weight during coating, the pressure of the support bar 5 against the scraper knife 3 can be increased or decreased in the corresponding areas by changing the pressures in the corresponding bellows 14 until a uniform coat profile is present.
In Fig. 4 ist schematisch das Steuersystem dargestellt, mit dem sich mit einer minimalen Anzahl von Steuerelementen in jedem Balg 14 der gewünschte Druck einstellen läßt. Dieses System läßt sich nicht nur bei einem erfindungsgemäßen Abstützsystem einsetzen, sondern auch bei anderen Systemen, bei denen eine Reihe von Druckkammern mit unterschiedli- chem Druck beaufschlagt werden sollen. Inbesondere ist sein Einsatz auch vorteilhaft in Beschichtungsvorrichtungen mit einem Dosiersystem, das eine Rakelstange als Dosierele¬ ment enthält, die von einem Druckschlauch abgestützt wird, der quer über die Arbeitsbreite in einzelne Druckkammern unterteilt ist. Eine derartige Beschichtungsvorrichtung ist der DE-PS 43 41 341 beschrieben.4 schematically shows the control system with which the desired pressure can be set in each bellows 14 with a minimum number of control elements. This system can be used not only in a support system according to the invention, but also in other systems in which a number of pressure chambers are to be subjected to different pressures. In particular, its use is also advantageous in coating devices with a metering system which contains a doctor rod as a metering element which is supported by a pressure hose which is divided into individual pressure chambers across the working width. Such a coating device is described in DE-PS 43 41 341.
Das Steuersystem besteht aus einem gemeinsamen Druckluftbehälter 19, der über ein steu¬ erbares Ventil 20, bevorzugt ein Proportionalventil, an eine Druckluftzufuhr 21 angeschlos¬ sen ist. Über das Ventil 20 läßt sich in dem Behälter 19 ein gewünschter Druck einstellen.The control system consists of a common compressed air tank 19, which is connected to a compressed air supply 21 via a controllable valve 20, preferably a proportional valve. A desired pressure can be set in the container 19 via the valve 20.
Vom Behälter 19 zweigt zu jedem mit Druckluft zu beaufschlagenden Druckkammern, in vorliegendem Beispiel zu jedem Balg 14, eine Leitung ab 22, in der ein einfaches Auf-/Zu- Ventil 23 angeordnet ist. Durch Öffnen eines Ventils 23 läßt sich den zugehörigen Druck¬ raum (Balg 14) ein dem Behälter 19 entsprechender Druck einstellen.A line 22 branches from the container 19 to each pressure chamber to be pressurized with compressed air, in the present example to each bellows 14, in which a simple open / close valve 23 is arranged. By opening a valve 23, the associated pressure chamber (bellows 14) can be set to a pressure corresponding to the container 19.
Die Einstellung der einzelnen Drücke in den Bälgen 14 erfolgt nun derart, daß zunächst über das Proportionalventil 20 im Behälter 19 der mittlere Druck (z. B. 3 bar) eingestellt wird, wobei die Ventile 23 zu den Bälgen 14 geöffnet sind. In jedem Balg 14 stellt sich somit ebenfalls der mittlere Druck ein, bei dem jede Zunge 8 um die Hälfte ihres maxima¬ len Verstellwegs nach oben verbogen ist. Die Vorderkante 7 der Abstützleiste liegt somit mit einem mittleren Anpreßdruck an dem Schabermesser 3 an. Anschließend werden die Ventile 23 zwischem dem Behälter 19 und den Bälgen 14 geschlossen.The setting of the individual pressures in the bellows 14 is now carried out in such a way that the average pressure (eg 3 bar) is first set via the proportional valve 20 in the container 19, the valves 23 to the bellows 14 being open. In each bellows 14 arises thus also the mean pressure at which each tongue 8 is bent upwards by half of its maximum adjustment path. The front edge 7 of the support bar therefore bears against the scraper knife 3 with a medium contact pressure. The valves 23 between the container 19 and the bellows 14 are then closed.
Ist das Strichgewicht in einzelnen Bereichen der Bahn 2 zu niedrig, so muß in diesen Berei¬ chen der Anpreßdruck der Abstützleiste 5 gegen das Schabermesser 3 abgesenkt werden, falls das Schabermesser 3 im sogenannten Ridgid Blade-Betrieb arbeitet. Dies erfolgt der¬ art, daß zunächst der Druck im Behälter 19 soweit erhöht wird, daß ein entsprechender Druck in einem Balg 14 die erforderliche Auslenkung einer Zunge 8 nach oben bewirken würde. Anschließend werden die Ventile 23 der Bälge 14 in den Bereichen mit zu niedri¬ gem Strichgewicht geöffnet. Der erhöhte Druck in den entsprechenden Bälgen 14 führt zu einer Auslenkung der entsprechenden Zungen 8 nach oben und somit zu einer Absenkung des Anpreßdrucks des Schabermessers 3 in diesen Bereichen, da die Zungen 8 bei einer Bewegung nach oben die Vorkante 7 der Abstützleiste 5 vom Schabermesser 3 wegziehen. Ist das Strichgewicht in anderen Bereich zu hoch, so wird analog zunächst der Druck im Behälter 19 auf den erforderlichen Wert abgesenkt. Anschließend wird durch Öffnen der entsprechenden Ventile 23 der Druck in den gewünschten Bälgen 14 auf den niedrigeren Wert im Behälter 19 abgesenkt. Der niedrigere Druck in einem Balg 14 führt dazu, daß die Druckfeder 17 die jeweilige Zunge 8 nach unten und somit die Vorderkante 7 der Abstütz¬ leiste 5 in Richtung zum Schabermesser 3 drückt. Dies führt zu einem erhöhten Anpre߬ druck des Schabermessers 3 und somit zu einem niedrigeren Strichgewicht in diesem Be¬ reich. If the coat weight in individual areas of the web 2 is too low, the contact pressure of the support bar 5 against the scraper knife 3 must be reduced in these areas if the scraper knife 3 operates in the so-called Ridgid Blade mode. This takes place in such a way that the pressure in the container 19 is first increased to such an extent that a corresponding pressure in a bellows 14 would cause the tongue 8 to be deflected upward. The valves 23 of the bellows 14 are then opened in the areas with a coating weight that is too low. The increased pressure in the corresponding bellows 14 leads to a deflection of the corresponding tongues 8 upwards and thus to a lowering of the contact pressure of the doctor knife 3 in these areas, since the tongues 8 move the leading edge 7 of the support bar 5 from the doctor knife 3 when moving upwards move away. If the coat weight is too high in another area, the pressure in the container 19 is first reduced to the required value. The pressure in the desired bellows 14 is then lowered to the lower value in the container 19 by opening the corresponding valves 23. The lower pressure in a bellows 14 means that the compression spring 17 presses the respective tongue 8 down and thus the front edge 7 of the support bar 5 in the direction of the scraper knife 3. This leads to an increased contact pressure of the doctor knife 3 and thus to a lower coating weight in this area.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1.1.
Abstützsystem für das Dosierelement (3) einer Beschichtungsvorrichtung, mit einer flachen Leiste (5) als Abstützelement, die im Bereich ihrer Vorderkante (7) durchgehend ausgebildet ist und eine Reihe von Längsschlitzen aufweist, und mit einer Reihe von Verstellelementen, die an den Zungen (8) zwischen den Schlitzen angreifen, dadurch gekennzeichnet, daß die Abstützleiste (5) aus Federblech besteht, die Zungen (8) an ihrer dem Dosierelement (3) abgewandten Ende festgeklemmt sind und die durchgehende Vorderkante (7) zwischen Führungsleisten (11, 12) in Richtung zum Do- sierelement (3) beweglich gelagert ist, und dadurch, daß an den Zungen (8) Verstellelemen¬ te (14, 16) angreifen, die eine Verbiegung senkrecht zur Erstreckungsebene der Zungen (8) bewirken.Support system for the metering element (3) of a coating device, with a flat bar (5) as a support element, which is formed continuously in the area of its front edge (7) and has a series of longitudinal slots, and with a series of adjustment elements which are attached to the tongues ( 8) engage between the slots, characterized in that the support strip (5) consists of spring plate, the tongues (8) are clamped at their end facing away from the dosing element (3) and the continuous front edge (7) between guide strips (11, 12) is movably mounted in the direction of the metering element (3), and in that adjusting elements (14, 16) act on the tongues (8), which cause bending perpendicular to the plane of extent of the tongues (8).
2. Abstützsystem nach Anspruch 1 , dadurch gekennzeichnet, daß jeweils ein pneumatisch be¬ tätigbarer Balg (14) als Verstellelement unterhalb oder oberhalb einer Zunge (8) angeordnet ist.2. Support system according to claim 1, characterized in that a pneumatically operable bellows (14) is arranged as an adjusting element below or above a tongue (8).
3. Abstützsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß eine Feder (16) die Zunge (8) gegen den Balg (14) drückt.3. Support system according to claim 1 or 2, characterized in that a spring (16) presses the tongue (8) against the bellows (14).
4.4th
Abstützsystem nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß im Bereich jeder Zunge (8) jeweils eine Wegmeßeinrichtung (25,26,27) zur Bestimmung der Position der Vorderkante (7) im jeweiligen Stellbereich angeordnet ist. Support system according to one of Claims 1 to 3, characterized in that a displacement measuring device (25, 26, 27) for determining the position of the front edge (7) in the respective adjustment range is arranged in the region of each tongue (8).
5.5th
Abstützsystem nach Anspruch 4, dadurch gekennzeichnet, daß die Wegmeßeinrichtungen (25,26,27) jeweils zwischen dem Verstellelement (14,16) und der durchgehenden Vorder¬ kante (7), insbesondere im Bereich der Führungsleisten (11,12) angeordnet sind.Support system according to claim 4, characterized in that the displacement measuring devices (25, 26, 27) are each arranged between the adjusting element (14, 16) and the continuous front edge (7), in particular in the region of the guide strips (11, 12).
6.6th
Vorrichtung zum Beschichten einer Materialbahn (2), insbesondere einer Papier- oder Kar¬ tonbahn, mit einer die Bahn (2) abstützenden Gegenwalze (1) und einem Schaberbalken (6), in dem ein Dosierelement, insbesondere ein Schabermesser (3), gegen die Bahn (2) an- drückbar gelagert ist, dadurch gekennzeichnet, daß auf dem Schaberbalken (6) ein Abstütz¬ system nach einem der Ansprüche 1-5 zum Abstützen des Dosierelements (3) befestigt ist.Device for coating a material web (2), in particular a paper or cardboard web, with a counter roller (1) supporting the web (2) and a scraper bar (6) in which a metering element, in particular a scraper knife (3), counteracts the web (2) is mounted such that it can be pressed on, characterized in that a support system according to one of claims 1-5 for supporting the metering element (3) is fastened on the scraper bar (6).
7.7.
Steuersystem zum Steuern des Drucks in einer Reihe von Druckkammern bei Abstützsyste- men von Dosierelementen in Beschichtungsvorrichtungen, insbesondere zur Einstellung des Drucks in den Bälgen (14) eines Abstützsystems nach einem der Ansprüche 1-6, dadurch gekennzeichnet, daß jede Druckkammer (14) über eine mittels eines Ventils (23) abschlie߬ bare Leitung (22) mit einem gemeinsamen Druckluftbehälter (19) verbunden ist, der über ein steuerbares Ventil (20), insbesondere ein Proportionalventil, an eine Druckluftzufuhr (21) angeschlossen ist. Control system for controlling the pressure in a number of pressure chambers in support systems of metering elements in coating devices, in particular for adjusting the pressure in the bellows (14) of a support system according to one of claims 1-6, characterized in that each pressure chamber (14) has a line (22) which can be closed by means of a valve (23) is connected to a common compressed air tank (19) which is connected to a compressed air supply (21) via a controllable valve (20), in particular a proportional valve.
EP97921793A 1996-05-02 1997-04-26 Supporting system for the metering component of a coating device Expired - Lifetime EP0831973B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19617458A DE19617458A1 (en) 1996-05-02 1996-05-02 Support system for the dosing element of a coating device
DE19617458 1996-05-02
PCT/EP1997/002166 WO1997041967A1 (en) 1996-05-02 1997-04-26 Supporting system for the metering component of a coating device

Publications (2)

Publication Number Publication Date
EP0831973A1 true EP0831973A1 (en) 1998-04-01
EP0831973B1 EP0831973B1 (en) 2002-06-12

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EP (1) EP0831973B1 (en)
JP (1) JPH11509475A (en)
AT (1) ATE218928T1 (en)
BR (1) BR9702247A (en)
CA (1) CA2226172A1 (en)
DE (2) DE19617458A1 (en)
WO (1) WO1997041967A1 (en)

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US8679271B2 (en) 2010-10-08 2014-03-25 Guardian Industries Corp. Vacuum insulated glass (VIG) unit including nano-composite pillars, and/or methods of making the same
US8679598B2 (en) 2010-10-08 2014-03-25 Guardian Industries Corp. Vacuum insulated glass (VIG) unit including nano-composite pillars, and/or methods of making the same
US9670713B2 (en) 2010-10-08 2017-06-06 Guardian Industries Corp. Vacuum insulated glass (VIG) unit including nano-composite pillars, and/or methods of making the same
US10590695B2 (en) 2010-10-08 2020-03-17 Guardian Glass, Llc. Vacuum insulated glass (VIG) unit including nano-composite pillars, and/or methods of making the same

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Publication number Publication date
CA2226172A1 (en) 1997-11-13
BR9702247A (en) 1999-02-17
EP0831973B1 (en) 2002-06-12
JPH11509475A (en) 1999-08-24
DE19617458A1 (en) 1997-11-06
US5938844A (en) 1999-08-17
WO1997041967A1 (en) 1997-11-13
ATE218928T1 (en) 2002-06-15
DE59707476D1 (en) 2002-07-18

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