EP1211053A2 - Supporting beam - Google Patents
Supporting beam Download PDFInfo
- Publication number
- EP1211053A2 EP1211053A2 EP01128122A EP01128122A EP1211053A2 EP 1211053 A2 EP1211053 A2 EP 1211053A2 EP 01128122 A EP01128122 A EP 01128122A EP 01128122 A EP01128122 A EP 01128122A EP 1211053 A2 EP1211053 A2 EP 1211053A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fiber
- support beam
- paper
- composite material
- coating machine
- 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
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Classifications
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- 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
- B05C11/044—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 holding the blades
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G3/00—Doctors
- D21G3/005—Doctor knifes
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- 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
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
- Y10T428/1314—Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound [e.g., fiber glass, mineral fiber, sand, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2904—Staple length fiber
Definitions
- the invention relates to a support beam for an elongated functional unit, in particular a paper and / or coating machine, consisting of an elongated, hollow body of round or polygonal cross section from one Fiber composite material, which is manufactured in the winding process.
- Generic supporting beams are already known and are used for storage and support of functional units, such as scraper devices, with which in paper machines the outer surfaces of drying cylinders, felts or guide rolls to be kept clean or to keep the paper or cardboard web from the To remove the outer surface.
- the supporting beam is described in DE 41 41 133.
- the supporting beam is there made of a fiber composite material and is in the form of an elongated hollow body with a substantially polygonal cross section.
- Such beams are also from DE 196 49 559.8 or DE 297 01 176.6 known for coating units as functional units.
- DE 197 13 195 also discloses a support body made of fiber composite material CFRP (carbon fiber reinforced plastic) is made.
- CFRP carbon fiber reinforced plastic
- This support body is made from a bundle of preferably tubular support elements, the individual Pipes can be manufactured in a winding process using heat and pressure are. It is also disclosed that by appropriate choice of the main fiber orientation, that should run approximately parallel to the longitudinal axis of a profile element, minimizes thermal expansion in the longitudinal direction and thus deflection becomes.
- the inventor has recognized that by increasing the natural frequency of the supporting beam, the susceptibility to vibrations can be surprisingly minimized. This is achieved when a certain part of the fibers of a high-strength fiber composite material, namely proportion A from 70% to 90%, in the longitudinal direction (ie axially parallel) and another part of the fibers, namely proportion B from 10% to 30%, approximately in the circumferential direction be aligned during the manufacture of the supporting beam. This is also achieved if such a fiber composite material is selected, the modulus of elasticity of which is equal to / greater than 100 GPa and whose coefficient of thermal expansion in the longitudinal direction is equal to / less than 2 x 10 -6 K -1 .
- the total proportion of fibers in the composite material is approximately 55%.
- An expedient solution of the invention can consist in that the fiber portion A to the longitudinal axis of the support beam at an angle of up to 15 ° in the plus-minus direction and the fiber portion B aligned at an angle between 75 ° and 90 ° is.
- one sectional arrangement of the fibers consists in that a part A in the longitudinal direction, a part B in the circumferential direction and a further part C and / or D in the above mentioned angles is aligned.
- the invention ie the support beam according to the invention, can be used very advantageously as a so-called scraper beam within a machine for producing a material web.
- the support beam according to the invention can be used particularly advantageously for coating machines, ie coaters and film presses. Particularly in the case of the latter devices, which the applicant also sells under the names Speedcoater TM, Speedsizer TM or Speedflow TM, low-vibration supporting beams have a particularly positive effect on the application result of a material web to be coated.
- a coating machine is selected as an example of the embodiment of the invention.
- the associated Figure 1 shows a coating machine with a schematic representation support beam according to the invention.
- the coating machine shown in Figure 1 consists of stands 1 with bearing levers 1a on the operator and drive side of the machine.
- the coating machine can On or also an offline machine of a machine for producing a material web, in particular fibrous web made of paper or cardboard.
- a respective roller 2 or 2 ' is each also machine-wide, thus assigned longitudinal support beams 4 and 4 '. Support both support beams 4, 4 ' down on the chair parts 1 with the bearing levers 1a.
- the supporting beams as shown here in the example, only schematically hold, on their upper side 4a as the functional units 6 and 6 ', for example a squeegee device in the form of a blade.
- this squeegee device is used to scrape off excess liquid or pasty medium applied to one or both sides of the material web 3 with an application unit, in order to achieve a specific, desired coating weight or is only used to even out the applied medium.
- the position number 6 or 6 ' also for a rotating doctor rod, a doctor bar and / or for said application unit (such as a nozzle application unit or distributed over the length of the support beam, or over the length of the associated roller arranged individual application nozzles) apply.
- the hydraulic cylinders 5 and 5 ' which are also shown, enable pivoting the support beam in the event of non-treatment of the material web or for service i.e. Maintenance purposes of the functional unit (e.g. when changing the doctor blade, cleaning the Order aggregates etc.).
- the support beam is hollow, so that on the one hand this very is kept light and on the other hand also the corresponding for a coating machine Color distribution tube can be arranged in a space-saving manner in the cavity.
- the directions Z and Y are indicated with corresponding arrows. It can be seen that the Z direction in the longitudinal, i.e. H. Axial direction of the respective support beam and the Y direction is perpendicular to the Z axis. In this Z direction occurs normally, ie without fiber orientation according to the invention and with a modulus of elasticity from> 100 GPa the lowest natural frequency.
- a material for the supporting beams is a steel beam instead of the previously used one high-strength fiber composite material selected, resulting in a 5 times lower weight is achieved.
- the combination of very high rigidity, very low weight and less Thermal expansion in the axial direction can be carried out by such a supporting beam in the Realize the winding process.
- composite materials are fiberglass (GRP), carbon fiber (CFRP) or aramid fibers can also be used.
- the first natural frequency was most critical, because it was below 5 Hz.
- the first natural frequency could be raised to 5.4 Hz.
- the higher eigenmodes (e.g. 3rd and 4th) have also been significantly increased. This means an increase in the natural bending frequency of the machine-wide support body (doctor bar in the selected example).
Abstract
Description
Die Erfindung betrifft einen Tragbalken für eine langgestreckte Funktionseinheit, insbesondere einer Papier- und/oder Streichmaschine, bestehend aus einem langgestreckten, hohlförmigen Körper von rundem oder polygonalem Querschnitt aus einem Faserverbundwerkstoff, der im Wickelverfahren hergestellt ist.The invention relates to a support beam for an elongated functional unit, in particular a paper and / or coating machine, consisting of an elongated, hollow body of round or polygonal cross section from one Fiber composite material, which is manufactured in the winding process.
Gattungsgemäße Tragbalken sind bereits bekannt und dienen der Lagerung und Abstützung von Funktionseinheiten, wie beispielsweise Schabereinrichtungen, mit denen in Papiermaschinen die Mantelflächen von Trockenzylindern, Filzen oder Leitwalzen saubergehalten werden oder sie dazu, um die Papier- oder Kartonbahn von der Mantelfläche abzunehmen.Generic supporting beams are already known and are used for storage and support of functional units, such as scraper devices, with which in paper machines the outer surfaces of drying cylinders, felts or guide rolls to be kept clean or to keep the paper or cardboard web from the To remove the outer surface.
Ein solcher Tragbalken ist in der DE 41 41 133 beschrieben. Der Tragbalken besteht aus einem Faserverbundwerkstoff und ist in Form eines langgestreckten Hohlkörpers mit im wesentlichen polygonalem Querschnitt hergestellt.Such a support beam is described in DE 41 41 133. The supporting beam is there made of a fiber composite material and is in the form of an elongated hollow body with a substantially polygonal cross section.
Aus der DE 196 49 559.8 oder der DE 297 01 176.6 sind auch derartige Tragbalken für Streichaggregate als Funktionseinheiten bekannt.Such beams are also from DE 196 49 559.8 or DE 297 01 176.6 known for coating units as functional units.
In der DE 197 13 195 ist ebenfalls ein Tragkörper offenbart, der aus Faserverbundwerkstoff CFK (kohlefaserverstärkter Kunststoff) besteht. Dieser Tragkörper besteht aus einem Bündel von vorzugsweise rohrförmigen Tragelementen, wobei die einzelnen Rohre im Wickelverfahren unter Anwendung von Wärme und Druck fertigbar sind. Es ist außerdem offenbart, dass durch geeignete Wahl der Hauptfaserorientierung, die ungefähr parallel zur Längsachse eines Profilelementes verlaufen sollte, eine Wärmeausdehnung in Längsrichtung und damit eine Durchbiegung minimiert wird.DE 197 13 195 also discloses a support body made of fiber composite material CFRP (carbon fiber reinforced plastic) is made. This support body is made from a bundle of preferably tubular support elements, the individual Pipes can be manufactured in a winding process using heat and pressure are. It is also disclosed that by appropriate choice of the main fiber orientation, that should run approximately parallel to the longitudinal axis of a profile element, minimizes thermal expansion in the longitudinal direction and thus deflection becomes.
Diese Tragbalken konnten in der Praxis allerdings noch nicht vollständig überzeugen. In practice, however, these supporting beams have not yet been completely convincing.
Besonders bei den heute geforderten großen Maschinenbreiten der Papier- oder Streichmaschinen von 8 Metern und mehr, treten zunehmende Schwingungsanfälligkeiten der Tragbalken auf, wodurch die auf dem Tragbalken angeordnete Funktionseinheit, d. h. Schaberelemente oder Streichaggregate über die gesamte Arbeitsbreite hinweg nicht gleichmäßig genug arbeiten.Especially with today's large machine widths of paper or Coating machines of 8 meters and more, increasing susceptibility to vibration occur the support beam, whereby the functional unit arranged on the support beam, d. H. Scraper elements or coating units across the entire working width don't work evenly enough.
Es ist Aufgabe der Erfindung, einen solchen Tragbalken derart zu verbessern, dass er nicht nur biegesteif, sondern auch schwingungsarm ist.It is an object of the invention to improve such a supporting beam in such a way that it is not only rigid, but also low-vibration.
Die Aufgabe wird durch einen erfindungsgemäßen Tragbalken mit den Merkmalen des Anspruches 1 gelöst.The object is achieved by a support beam according to the invention with the features of claim 1 solved.
Der Erfinder hat erkannt, dass durch Erhöhung der Eigenfrequenz des Tragbalkens
sich die Schwingungsanfälligkeit überraschend stark minimieren lässt. Das wird erreicht,
wenn ein bestimmter Teil der Fasern eines hochfesten Faserverbundwerkstoffes,
nämlich Anteil A von 70 % bis 90 %, in Längsrichtung (d.h. achsparallel) und
ein weiterer Teil der Fasern, nämlich Anteil B von 10 % bis 30 %, annähernd in Umfangsrichtung
bei der Herstellung des Tragbalkens ausgerichtet werden.
Das wird außerdem erreicht, wenn ein solcher Faserverbundwerkstoff gewählt wird,
dessen E-Modul gleich/größer 100 GPa und dessen Wärmeausdehnungskoeffizient
in Längsrichtung gleich/kleiner 2 x 10 -6 K-1 beträgt.The inventor has recognized that by increasing the natural frequency of the supporting beam, the susceptibility to vibrations can be surprisingly minimized. This is achieved when a certain part of the fibers of a high-strength fiber composite material, namely proportion A from 70% to 90%, in the longitudinal direction (ie axially parallel) and another part of the fibers, namely proportion B from 10% to 30%, approximately in the circumferential direction be aligned during the manufacture of the supporting beam.
This is also achieved if such a fiber composite material is selected, the modulus of elasticity of which is equal to / greater than 100 GPa and whose coefficient of thermal expansion in the longitudinal direction is equal to / less than 2 x 10 -6 K -1 .
Der Gesamtanteil der Fasern im Verbundwerkstoff beträgt ca. 55 %.The total proportion of fibers in the composite material is approximately 55%.
Eine zweckmäßige Lösung der Erfindung kann darin bestehen, dass der Faseranteil A zur Längsachse des Tragbalkens in einem Winkel von bis zu 15° in Plus- Minus-Richtung und der Faseranteil B in einem Winkel zwischen 75° und 90° ausgerichtet ist.An expedient solution of the invention can consist in that the fiber portion A to the longitudinal axis of the support beam at an angle of up to 15 ° in the plus-minus direction and the fiber portion B aligned at an angle between 75 ° and 90 ° is.
In diesem Zusammenhang sind auch andere Konstellationen denkbar. So könnte eine sektionale Anordnung der Fasern darin bestehen, dass ein Teil A in Längsrichtung, ein Teil B im Umfangsrichtung und ein weitere Teil C und/oder D in den vorstehend genannten Winkeln ausgerichtet ist.In this context, other constellations are also conceivable. So could one sectional arrangement of the fibers consists in that a part A in the longitudinal direction, a part B in the circumferential direction and a further part C and / or D in the above mentioned angles is aligned.
Die Erfindung, d. h. der erfindungsgemäße Tragbalken ist sehr vorteilhaft als sogenannter
Schaberbalken innerhalb einer Maschine zur Herstellung einer Materialbahn
verwendbar.
Besonders vorteilhaft lässt sich aber der erfindungsgemäße Tragbalken für Streichmaschinen,
d. h. Coater und Filmpressen einsetzen. Gerade bei letztgenannten Vorrichtungen,
die von der Anmelderin auch unter dem Namen Speedcoater™, Speedsizer™
oder Speedflow™ vertrieben werden, wirken sich schwingungsarme Tragbalken
besonders positiv auf das Auftragsergebnis einer zu beschichtenden Materialbahn
aus.The invention, ie the support beam according to the invention, can be used very advantageously as a so-called scraper beam within a machine for producing a material web.
However, the support beam according to the invention can be used particularly advantageously for coating machines, ie coaters and film presses. Particularly in the case of the latter devices, which the applicant also sells under the names Speedcoater ™, Speedsizer ™ or Speedflow ™, low-vibration supporting beams have a particularly positive effect on the application result of a material web to be coated.
Demzufolge ist im Anspruch 5 auch eine Auftragsvorrichtung unter Schutz gestellt.Accordingly, an application device is also protected in
Eine vorteilhafte Ausgestaltung des Tragbalkens ergibt sich darüber hinaus aus dem
Unteranspruch 4.An advantageous embodiment of the support beam also results from the
Nachfolgend ist ein Ausführungsbeispiel der Erfindung erläutert.An exemplary embodiment of the invention is explained below.
Als Beispiel für die Ausführung der Erfindung ist eine Streichmaschine gewählt. Die zugehörige Figur 1 zeigt also in schematischer Darstellung eine Streichmaschine mit erfindungsgemäßem Tragbalken.A coating machine is selected as an example of the embodiment of the invention. The associated Figure 1 shows a coating machine with a schematic representation support beam according to the invention.
Die in der Figur 1 dargestellte Streichmaschine besteht aus Ständern 1 mit Lagerhebeln
1a auf der Führer- und Triebseite der Maschine. Die Streichmaschine kann eine
On- oder auch eine Offline-Maschine einer Maschine zur Herstellung einer Materialbahn,
insbesondere Faserstoffbahn aus Papier oder Karton, sein.The coating machine shown in Figure 1 consists of stands 1 with
In der Figur ist nur eine Seite der Streichmaschine sichtbar. In Stuhlungsteilen der
Maschine, die aus Übersichtlichkeitsgründen nicht dargestellt sind, sind zwei maschinenbreite
Auftragswalzen 2 und 2' drehbar, bzw. mit eigenem Antrieb versehen, gelagert.
Beide Walzen sind dabei so gelagert, dass sie miteinander einen Pressspalt
(Nip) bilden, den die Materialbahn 3, wie im gewählten Beispiel mit Pfeil dargestellt,
von oben nach unten durchläuft. Der Nip ist in der Figur mit N bezeichnet.Only one side of the coating machine is visible in the figure. In parts of the chair
Machines that are not shown for reasons of clarity are two machine
Einer jeweiligen Walze 2 oder 2' ist jeweils ein ebenfalls maschinenbreit ausgeführter,
also längsgestreckter Tragbalken 4 und 4' zugeordnet. Beide Tragbalken 4, 4' stützen
sich an den Stuhlungsteilen 1 mit den Lagerhebeln 1a ab.A
Die Tragbalken nehmen wie hier im Beispiel nur schemenhaft dargestellt, auf Ihrer
Oberseite 4a als Funktionseinheit 6 und 6' beispielsweise eine Rakeleineinrichtung in
Form einer Klinge auf.
Diese Rakeleinrichtung dient bei einer Streichmaschine zum Abrakeln von mit einem
Auftragsaggregat auf eine oder beide Seiten der Materialbahn 3 aufgebrachten, überschüssig
aufgetragenen flüssigen oder pastösen Medium zur Erreichung eines bestimmten,
gewünschten Strichgewichtes oder dient nur der Vergleichmäßigung des
aufgebrachten Mediums.The supporting beams, as shown here in the example, only schematically hold, on their
In a coating machine, this squeegee device is used to scrape off excess liquid or pasty medium applied to one or both sides of the
Selbstverständlich könnte anstelle der in der Figur dargestellten Rakelklinge die Positionsziffer
6 bzw. 6'auch für einen rotierenden Rakelstab, eine Rakelleiste und/oder
für das besagte Auftragsaggregat (wie beispielsweise ein Düsenauftragswerk oder
über die Länge des Tragbalkens, bzw. über die Länge der zugeordneten Walze verteilt
angeordnete Einzelauftragsdüsen) gelten.Of course, instead of the doctor blade shown in the figure, the
Die ebenfalls mit dargestellten Hydraulikzylinder 5 und 5' ermöglichen ein Abschwenken
der Tragbalken im Falle der Nichtbehandlung der Materialbahn oder für Service-d.h.
Wartungszwecke der Funktionseinheit (z.B. bei Rakelwechsel, Reinigung des
Auftragsaggregates usw.).The
Der Tragbalken ist hohlförmig ausgebildet, so dass dadurch zum einen dieser sehr leicht gehalten ist und zum anderen für eine Streichmaschine auch das entsprechende Farbverteilrohr im Hohlraum platzsparend angeordnet werden kann.The support beam is hollow, so that on the one hand this very is kept light and on the other hand also the corresponding for a coating machine Color distribution tube can be arranged in a space-saving manner in the cavity.
In der Figur sind die Richtungen Z und Y mit entsprechenden Pfeilen angegeben. Man erkennt, dass die Z-Richtung in Längs-, d. h. Achsrichtung des jeweiligen Tragbalkens und die Y-Richtung rechtwinklig zur Z-Achse verläuft. In dieser Z-Richtung tritt im Normalfall, also ohne erfindungsgemäße Faserorientierung und bei einem E-Modul von > 100 GPa die niedrigste Eigenfrequenz auf.In the figure, the directions Z and Y are indicated with corresponding arrows. It can be seen that the Z direction in the longitudinal, i.e. H. Axial direction of the respective support beam and the Y direction is perpendicular to the Z axis. In this Z direction occurs normally, ie without fiber orientation according to the invention and with a modulus of elasticity from> 100 GPa the lowest natural frequency.
Als Werkstoff für die Tragbalken ist anstelle der früher verwendeten Stahlträger ein hochfester Faserverbundwerkstoff gewählt, wodurch ein 5fach geringeres Gewicht erreicht wird.As a material for the supporting beams is a steel beam instead of the previously used one high-strength fiber composite material selected, resulting in a 5 times lower weight is achieved.
Die Kombination von sehr hoher Steifigkeit, sehr niedrigem Gewicht und geringer Wärmeausdehnung in Achsrichtung lässt sich durch einen solchen Tragbalken im Wickelverfahren realisieren.The combination of very high rigidity, very low weight and less Thermal expansion in the axial direction can be carried out by such a supporting beam in the Realize the winding process.
Als Verbundwerkstoffe sind Glasfaserkunststoff (GFK), Kohlefaserkunststoff (CFK) oder auch Aramidfasern verwendbar.As composite materials are fiberglass (GRP), carbon fiber (CFRP) or aramid fibers can also be used.
Bei Ausrichtung eines Faseranteiles A von 70 % bis 90 % annähernd in Achsrichtung und eines Faseranteiles B von 10 % bis 30 % annähernd in Umfangsrichtung sowie einem E-Modul von => 100 GPa und einem Wärmeausdehnungskoeffizienten von =< 2x10-61/K wird eine deutlich höhere erste Schwingungseigenform und somit auch eine hohe Eigenfrequenz von über 5 Hz erreicht (ohne erfindungsgemäße Lösung in z-Achse sehr niedrig mit <5Hz), wodurch die Schwingungsanfälligkeit der Tragbalken deutlich minimiert wird. Die ganze Streichmaschine wird dadurch dynamisch stabiler.When aligning a fiber component A of 70% to 90% approximately in the axial direction and a fiber component B of 10% to 30% approximately in the circumferential direction as well as an elastic modulus of => 100 GPa and a thermal expansion coefficient of = <2x10 -6 1 / K achieved a significantly higher first mode of vibration and thus also a high natural frequency of over 5 Hz (without the inventive solution in the z-axis very low at <5 Hz), as a result of which the susceptibility to vibrations of the supporting beams is significantly minimized. This makes the entire coating machine dynamically more stable.
Untersuchungen zu Schwingungseigenformen von herkömmlichen Tragbalken aus Stahl und erfindungsgemäßenTragbalken aus einem der oben genannten Faserverbundstoffe sind nachstehend aufgeführt. Dabei wurden die Messungen an verschiedenen (nicht in der Figur dargestellten) Knotenpunkten des Tragbalkens ausgeführt.Investigations of the natural modes of vibration from conventional supporting beams Steel and support beam according to the invention made of one of the fiber composites mentioned above are listed below. The measurements were made on different (Not shown in the figure) nodes of the support beam executed.
Wie vorstehend bereits angemerkt, zeigte sich die erste Eigenfrequenz am kritischsten, da sie einen Wert von unter 5 Hz betrug. Durch den Einsatz des erfindungsgemäßen Tragbalkens konnte die erste Eigenfrequenz auf 5,4 Hz angehoben werden.As noted above, the first natural frequency was most critical, because it was below 5 Hz. By using the invention The first natural frequency could be raised to 5.4 Hz.
Auch die höheren Eigenformen (z. B. 3. und 4.) wurden deutlich erhöht. Die bedeutet
eine Anhebung der Biegeeigenfrequenz des maschinenbreiten Tragkörpers (Rakelbalken
im gewählten Beispiel).
Claims (5)
als Faserverbundwerkstoff ein solcher vorgesehen ist, der ein E-Modul von = >100 GPa, und in Richtung seiner Längserstreckung eine Wärmeausdehnung von = < 2 x 10-6 1/K sowie eine solche Faserorientierung aufweist, bei der ein Faseranteil A von 70 % bis 90 % annähernd achsparallel und ein Faseranteil B von 10 % bis 30 % annähernd in Umfangsrichtung ausgerichtet ist.Support beam (4, 4 ') for an elongated functional unit (6), in particular a paper and / or coating machine, consisting of an elongated, hollow body of round or polygonal cross section made of a fiber composite material, which is produced in the winding process, characterized in that
the fiber composite material is one which has an elastic modulus of => 100 GPa and, in the direction of its longitudinal extension, a thermal expansion of = <2 x 10 -6 1 / K and a fiber orientation in which a fiber content A of 70% up to 90% approximately axially parallel and a fiber component B of 10% to 30% approximately in the circumferential direction.
der Faseranteil A in einem Winkel von bis zu 15 ° von der Achse der Längserstreckung ausgelenkt ist.Support beam according to claim 1, characterized in that
the fiber component A is deflected at an angle of up to 15 ° from the axis of the longitudinal extension.
der Faseranteil B in einem Winkel zwischen 75° und 90° von der Achse der Längserstreckung ausgelenkt ist.Support beam according to claim 1, characterized in that
the fiber component B is deflected at an angle between 75 ° and 90 ° from the axis of the longitudinal extension.
als Faserverbundwerkstoff Glasfaserkunststoff (GFK), Kohlefaserkunststoff (CFK) oder Aramid Verwendung findet.Support beam according to claim 1 to 3, characterized in that
glass fiber plastic (GRP), carbon fiber plastic (CFRP) or aramid is used as fiber composite material.
der Tragbalken (4,4') aus einem Faserverbundwerkstoff gemäß der Ansprüche 1 bis 4 gefertigt ist.Device for the direct or indirect application of a liquid or pasty medium on one or both sides to a running material web (3), in particular a fibrous web made of paper or cardboard, with at least one application unit and / or a doctor device (6, 6 ') on a supporting beam (4,4 ') supports, characterized in that
the support beam (4,4 ') is made of a fiber composite material according to claims 1 to 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10059281A DE10059281A1 (en) | 2000-11-29 | 2000-11-29 | stringers |
| DE10059281 | 2000-11-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1211053A2 true EP1211053A2 (en) | 2002-06-05 |
| EP1211053A3 EP1211053A3 (en) | 2006-05-31 |
| EP1211053B1 EP1211053B1 (en) | 2009-09-30 |
Family
ID=7665119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01128122A Expired - Lifetime EP1211053B1 (en) | 2000-11-29 | 2001-11-27 | Supporting beam |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6672028B2 (en) |
| EP (1) | EP1211053B1 (en) |
| AT (1) | ATE444155T1 (en) |
| DE (2) | DE10059281A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006013130A1 (en) * | 2004-07-30 | 2006-02-09 | Voith Patent Gmbh | Supporting element |
| CN104368503A (en) * | 2014-12-01 | 2015-02-25 | 常熟市方塔涂料化工有限公司 | Paint scraper |
| EP2811070B1 (en) | 2013-06-06 | 2016-04-20 | Valmet Technologies, Inc. | Application unit of a coating or sizing device for applying treatment substance on a fiber web |
| CN108787312A (en) * | 2018-07-02 | 2018-11-13 | 刘先平 | A kind of spinning coating processing technology of textile automatic coating system and the system |
| AT16455U1 (en) * | 2017-05-08 | 2019-10-15 | Valmet Technologies Oy | DEVICE FOR MOVING A BEAM |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2262925T3 (en) * | 2003-07-03 | 2006-12-01 | FISCHER & KRECKE GMBH & CO. | PRINT MACHINE. |
| DE102004005087A1 (en) * | 2004-02-02 | 2005-08-18 | Voith Paper Patent Gmbh | Support beam in fiber-reinforced composite material, used in papermaking machine, has fiber orientations selected to minimize coefficient of thermal expansion |
| FI120915B (en) * | 2004-08-27 | 2010-04-30 | Runtech Systems Oy | Beam Construction |
| FI117017B (en) * | 2004-10-26 | 2006-05-15 | Metso Paper Inc | Beam construction for a paper, cardboard or finishing machine |
| FI20105921A (en) * | 2010-09-02 | 2012-03-03 | Metso Paper Inc | SCHABERTRÅG |
| DE102017109549B4 (en) * | 2017-05-04 | 2021-07-29 | Voith Patent Gmbh | Coating device for treating a fibrous web |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9113542U1 (en) * | 1991-10-31 | 1992-06-17 | J.M. Voith Gmbh, 7920 Heidenheim, De | |
| DE4141133C1 (en) * | 1991-12-13 | 1993-05-27 | J.M. Voith Gmbh, 7920 Heidenheim, De | Support beam for doctor blade bearing on dry cylinder - comprises elongated hollow body having 2 or more convex curved longitudinal walls and composed of composite fibre material e.g. carbon@ fibres |
| DE29918593U1 (en) * | 1998-10-22 | 2000-01-20 | Valmet Corp | Scraper bar for a roller or a cylinder of a paper machine or board machine |
| DE19951041A1 (en) * | 1998-10-23 | 2000-05-04 | Valmet Corp | Composite beam structure for a cellulose/paper/cardboard production or finishing machine has a curved section and a straight section bonded together with a scraper or spreader or monitor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI100311B (en) * | 1988-09-23 | 1997-11-14 | Voith Gmbh J M | Smoothing device for a coating machine |
| US5979119A (en) * | 1996-03-27 | 1999-11-09 | Trafton; Ronald H. | Components and assemblies for building construction and methods of making and using same |
| DE19649559A1 (en) * | 1996-11-29 | 1998-06-04 | Voith Sulzer Papiermasch Gmbh | Device for the direct or indirect application of a liquid or pasty coating medium to a running material web |
| DE29701176U1 (en) * | 1997-01-24 | 1997-05-22 | Voith Sulzer Papiermasch Gmbh | Device for the direct or indirect application of a liquid or pasty application medium to a running material web |
| DE19713195A1 (en) * | 1997-03-27 | 1998-10-01 | Voith Sulzer Papiermasch Gmbh | Papermaking machine carrier beam |
-
2000
- 2000-11-29 DE DE10059281A patent/DE10059281A1/en not_active Withdrawn
-
2001
- 2001-11-26 US US09/994,221 patent/US6672028B2/en not_active Expired - Fee Related
- 2001-11-27 EP EP01128122A patent/EP1211053B1/en not_active Expired - Lifetime
- 2001-11-27 AT AT01128122T patent/ATE444155T1/en active
- 2001-11-27 DE DE50115130T patent/DE50115130D1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9113542U1 (en) * | 1991-10-31 | 1992-06-17 | J.M. Voith Gmbh, 7920 Heidenheim, De | |
| DE4141133C1 (en) * | 1991-12-13 | 1993-05-27 | J.M. Voith Gmbh, 7920 Heidenheim, De | Support beam for doctor blade bearing on dry cylinder - comprises elongated hollow body having 2 or more convex curved longitudinal walls and composed of composite fibre material e.g. carbon@ fibres |
| DE29918593U1 (en) * | 1998-10-22 | 2000-01-20 | Valmet Corp | Scraper bar for a roller or a cylinder of a paper machine or board machine |
| DE19951041A1 (en) * | 1998-10-23 | 2000-05-04 | Valmet Corp | Composite beam structure for a cellulose/paper/cardboard production or finishing machine has a curved section and a straight section bonded together with a scraper or spreader or monitor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006013130A1 (en) * | 2004-07-30 | 2006-02-09 | Voith Patent Gmbh | Supporting element |
| EP2811070B1 (en) | 2013-06-06 | 2016-04-20 | Valmet Technologies, Inc. | Application unit of a coating or sizing device for applying treatment substance on a fiber web |
| CN104368503A (en) * | 2014-12-01 | 2015-02-25 | 常熟市方塔涂料化工有限公司 | Paint scraper |
| AT16455U1 (en) * | 2017-05-08 | 2019-10-15 | Valmet Technologies Oy | DEVICE FOR MOVING A BEAM |
| CN108787312A (en) * | 2018-07-02 | 2018-11-13 | 刘先平 | A kind of spinning coating processing technology of textile automatic coating system and the system |
Also Published As
| Publication number | Publication date |
|---|---|
| US6672028B2 (en) | 2004-01-06 |
| DE50115130D1 (en) | 2009-11-12 |
| EP1211053A3 (en) | 2006-05-31 |
| DE10059281A1 (en) | 2002-06-06 |
| US20020102372A1 (en) | 2002-08-01 |
| ATE444155T1 (en) | 2009-10-15 |
| EP1211053B1 (en) | 2009-09-30 |
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