EP0684338A2 - Blade holder - Google Patents

Blade holder Download PDF

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Publication number
EP0684338A2
EP0684338A2 EP95107240A EP95107240A EP0684338A2 EP 0684338 A2 EP0684338 A2 EP 0684338A2 EP 95107240 A EP95107240 A EP 95107240A EP 95107240 A EP95107240 A EP 95107240A EP 0684338 A2 EP0684338 A2 EP 0684338A2
Authority
EP
European Patent Office
Prior art keywords
blade
blade holder
holder according
distance
support element
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
EP95107240A
Other languages
German (de)
French (fr)
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EP0684338B1 (en
EP0684338A3 (en
Inventor
Günter Dr. Halmschlager
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Sulzer Papiermaschinen GmbH
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Publication date
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Publication of EP0684338A2 publication Critical patent/EP0684338A2/en
Publication of EP0684338A3 publication Critical patent/EP0684338A3/en
Application granted granted Critical
Publication of EP0684338B1 publication Critical patent/EP0684338B1/en
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Classifications

    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes

Definitions

  • the invention relates to a device for arranging a blade (blade holder) on a transport device of a web, in particular on a roller or a drying cylinder of a paper machine, in which the blade held in a blade clamping device can be brought transversely to the running direction of a web, the blade Clamping device is arranged on a blade support beam extending transversely to the web running direction, and a support element is articulated with a first pivot bearing on a frame and with a second pivot bearing on the blade support beam.
  • a blade holder for example, coating a material web, in particular a paper web, with a coating slip by means of a doctor blade with which the layer thickness should be as uniform as possible.
  • a material web in particular a paper web
  • a coating slip by means of a doctor blade with which the layer thickness should be as uniform as possible.
  • Another possible use is the use in the production of crepe paper, in which a material web runs onto a scraper arranged on a transport roller in order to thereby produce the structure typical of crepe paper.
  • the paper quality is significantly influenced by the contact pressure of the blade on the web or on the transport device and the size of the blade working angle.
  • the blade can be brought into a predetermined position as precisely as possible.
  • the blades wear out, which is why they have to be replaced or reground after they have reached their wear limit.
  • the blade is usually removed from the roller from its operating position.
  • the blade of the scraper or squeegee is then brought back exactly into the previously assumed operating position.
  • the blades should also be able to be adjusted in their operating position, for example to optimize the paper quality or when changing the paper machine to a different type of paper.
  • EP-PS 0 137 837 discloses a blade holder in which the arrangement of a blade of a doctor blade is achieved by two rotary movements of a blade support beam, each about a pivoting or rotating axis running perpendicular to the transport direction.
  • this blade holder has two actuators with screw drives, which can be connected to one another by means of a clutch and a bevel gear.
  • the positioning of the blade should be easier and faster than with blade holders known from the prior art.
  • the support element with the second pivot bearing is pivotally articulated on a lever such that the blade holder is provided with a pivot device connected to the lever and the support element, by means of which the blade support beam can be pivoted from an operating position into a maintenance position which is at a greater distance from the roller , wherein the pivoting movement takes place by changing the distance between the articulation points of the pivoting device on the lever and the support element.
  • a positioning device connected to the frame and the support element for setting a blade working angle, the positioning of the blade being effected by changing the distance between the two articulation points of the positioning device on the frame and the support element.
  • the pivoting device increases the distance between its articulation points on the lever and the support element by a certain amount. This can be done, for example, by means of a cylinder of the pivoting device of a preferred embodiment which can be acted upon with a pressure medium a pneumatic cylinder. After the maintenance work on the blade has been carried out, the distance between the two articulation points is reduced again to the original amount. With this blade holder, it is therefore only necessary to carry out a translatory movement of the same length in order to change from the operating position to the maintenance position and back to the operating position.
  • a blade holder according to the invention is thus distinguished on the one hand by simple operation.
  • such translational movements can be carried out relatively quickly and also very precisely, for example with the pneumatic cylinder already mentioned above.
  • the tip of the blade can be arranged in the axis of rotation of the first pivot bearing. This can be implemented constructively in such a way that the axis of rotation of the pivot bearing lies on a radius on which the blade moves from the maintenance position into the operating position during its movement. In such an embodiment, it is then particularly easy to vary the blade working angle by changing the distance between the articulation points of the positioning device on the frame and the support element, without the contact pressure of the blade being influenced thereby. This is possible because when the positioning device is actuated, the blade only rotates around its tip, without the arrangement of the blade being changed in any other way with respect to the transport device.
  • a particularly simple change in the distance between the articulation points of the positioning device can be achieved in that the positioning device is preferably provided with a screw drive arranged on the connecting line of the articulation points.
  • the invention has a control in a practical embodiment.
  • the blade holder according to the invention can thus be remotely controlled with corresponding control signals, for example from an operating console, into the maintenance and operating position.
  • a remote-controlled adjustment of the blade working angle can also be achieved in this way.
  • the current blade working angle can be detected by a sensor system and output as a corresponding electrical signal. If these signals, which correspond to the current blade working angle, are fed to a control device, an exact comparison between a target and actual arrangement of the blade support beam can be achieved.
  • the blade holder according to the invention shown in FIG. 1 is arranged on an end face, which is shown in sections, of a roller 1 of a paper machine rotating in the clockwise direction for producing crepe paper.
  • a second (mirror image) blade holder according to the invention which corresponds to that shown in FIG.
  • a blade support beam 2 which extends perpendicular to the plane of the drawing and along the lateral surface of the roller 1, is fastened between the two blade holders.
  • the blade holder also has a support element 3, a lever 4 shown in broken lines and a stationary frame 5.
  • the arrangement of these elements is such that the lever 4 is arranged in front of the support element 3 in the viewing direction of the illustration in FIG. 1 and this is in turn arranged in front of the blade support beam 2.
  • the end face 6 of the blade support beam 2 and the surface 7 of the frame 5 are approximately at the same height.
  • the support element 3 has two support arms 9, 10 which are aligned approximately perpendicular to one another.
  • a screw drive 15 as the positioning device 14. This is driven by an electric motor (not shown) and is located between an articulation point 16 on the frame 5 and an articulation point 17 on the first support arm 9 of the support element 3 along a ( imaginary) connecting line 18 of the two articulation points 16, 17 arranged.
  • the screw drive 15 is in each case rotatably fastened about the two articulation points 16, 17.
  • the support element 3 is also pivotally attached to the frame 5 by its second support arm 10 by means of a first pivot bearing 20 (see in particular FIG. 2).
  • the blade support beam 2 which is rigidly connected to the lever 4, is rotatably and axially displaceable (not shown here) in the base part 8 of the support element 3 in a second bearing.
  • a swivel device 24 Between one Articulation point 22 in the area of the other end of the lever 4 and a further articulation point 23 on the first support arm 9 of the support element 3 there is a swivel device 24.
  • This is provided with a pneumatic cylinder 25, the direction of action along the connecting line 26 of the two articulation points 22, 23 Swivel device 24 extends.
  • the connecting line 26 is at a greater distance from the pivot bearing 21 than the connecting line 18.
  • the pneumatic cylinder 25 is also rotatably fastened about its two articulation points 22, 23.
  • the frame 5, in which the axis of rotation of the roller 1, which is also not shown, is mounted, has at its lower end a tab 28 which can be adjusted with a threaded bolt 27.
  • the pivot point 16 of the positioning device 14 and the first pivot bearing 20 of the support element 3 are located on the tab 28 of the frame 5.
  • the threaded bolt 27 By turning the threaded bolt 27, the distance of the pivot point 16 and the first pivot bearing 20 from the circumferential line of the roller 1 can be changed along an axis of displacement become.
  • “distance” is to be understood in each case as the projection of the distance line that actually runs spatially in the figures into the drawing planes of FIGS. 1-3.
  • the blade support beam 2 which in the illustrated embodiment is a support beam of a scraper 30, is mounted in the second pivot bearing 21 together with the support element 3 and the lever 4. It can perform relative movements relative to the support element 3 about the axis of the second pivot bearing 21.
  • the blade support beam 2 is arranged in a rotationally fixed manner in relation to the lever 4.
  • the contact pressure of the scraper 30 located on the blade support beam 2 can be varied with a blade clamping device, not shown, which is known per se from the prior art. This is done in that the scraper 30 is bent along its entire length (perpendicular to the plane of the drawing) and thus a bending force is generated in the direction of the roller 1.
  • the blade holder Before the blade holder is used for the first time, it is in a maintenance position as shown in Fig. 2.
  • the axis of the first pivot bearing 20 has been adjusted with the aid of the threaded bolt 27 such that it is located directly above the circumferential line of the roller 1, as shown in FIG.
  • the scraper 30 After the scraper 30 is fastened to the blade support beam 2 and a bending force which brings about a predetermined contact pressure is applied to it, it is arranged in an operating position on the roller 1 by actuating the pivoting device 24.
  • the sharp edge, or in the illustrations of the figures the blade tip, of the scraper 30 is aligned with the axis of rotation of the second pivot bearing 21.
  • the second blade holder according to the invention not shown on the other end face of the roller 1, is always aligned in the same way like the blade holder shown. In order to pivot the blade support beam 2, the two blade holders always perform the same movements synchronously.
  • the frame 3 can be pivoted together with the blade support bar 2 around the blade tip.
  • the positioning device 14 is used for this. If, for example, starting from the arrangement shown in FIG. 1, the scraper 30 is to be provided with a blade working angle of FIG. 3, the screw drive 15 of the positioning device 14 is actuated in such a way that the distance between the two articulation points 16, 17 is one New blade working angle corresponding amount increased. As a result, the support element 3 rotates counterclockwise around the first pivot bearing 20. Since the distance between the two articulation points 22, 23 remains the same, the lever follows this movement. Overall, this requires a rotary movement of the blade support beam 2, likewise counterclockwise, only around the first pivot bearing 20.
  • the blade tip is aligned with the axis of the first pivot bearing 20. This has the consequence that the blade support beam 2 rotates around the blade tip, whereby the new blade working angle is set after the movement has ended.
  • the blade working angle can be set continuously, regardless of the contact pressure. This can even be done during the operation of the paper machine, for example to compensate for wear of the blade tip of the scraper 30.
  • blade working angles that are optimally found for certain types of paper can be reproducibly set and maintained at any time in a simple manner.
  • the scraper 30 In this maintenance position, the scraper 30 is laterally accessible to the blade holder and can, if necessary, be exchanged for another. If it is still possible due to the state of wear, the scraper 30 is preferably reground. However, the width of the scraper 30 is reduced. So that the blade tip can always be brought into the axis of the first pivot bearing 20 despite different widths of the scraper 30, the scraper 30 is supported with its end opposite the blade tip on an adjustable stop surface, not shown. Different widths of the scraper 30 can be compensated for with the stop bar.
  • the distance between the two articulation points 22, 23 is reduced again to the original amount by the original pressurization of the pneumatic cylinder 25.
  • the lever 4 and the blade support beam 2 thereby rotate counterclockwise around the second pivot bearing 21 along the same path back to their original arrangement, the operating position.
  • the blade support bar is arranged on the roller 1 with the same blade working angle and contact pressure as before.
  • the rigidity of the blade holders according to the invention is increased by mechanical cross connections, for example a cross strut. It is also possible to provide manually operated trapezoidal thread spindles instead of the electric drives of the screw drives.

Landscapes

  • Paper (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Cleaning In Electrography (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

A blade holder for disposing a blade proximate to a roll for transporting a continuous web of material includes a blade positioned transversely to a direction of movement of a continuous web of material. The blade tensioning device is disposed on a blade supporting beam extending transversely to the direction of movement of the web, the blade supporting beam swivelable and oscillatable transversely to the direction of movement of the web. The holder includes a supporting element and a stand having a bracket upon which a first drag bearing is disposed, the supporting element rotatably supported by the first drag bearing. A second drag bearing links the supporting element, the blade supporting beam, and a lever. The holder also includes a swiveling device for swiveling the blade supporting beam from a working position to a maintenance position and a positioning device for adjusting a blade working angle.

Description

Die Erfindung betrifft eine Vorrichtung zur Anordnung einer Klinge (Klingenhalterung) an einer Transporteinrichtung einer Warenbahn, insbesondere an einer Walze oder einem Trockenzylinder einer Papiermaschine, bei der die in einer Klingen-Einspanneinrichtung gehaltene Klinge quer zur Laufrichtung einer Warenbahn bringbar ist, wobei die Klingen-Einspanneinrichtung an einem sich quer zur Bahnlaufrichtung erstreckenden Klingentragbalken angeordnet ist, und ein Tragelement mit einem ersten Schwenklager an einem Gestell und mit einem zweiten Schwenklager an dem Klingentragbalken angelenkt ist.The invention relates to a device for arranging a blade (blade holder) on a transport device of a web, in particular on a roller or a drying cylinder of a paper machine, in which the blade held in a blade clamping device can be brought transversely to the running direction of a web, the blade Clamping device is arranged on a blade support beam extending transversely to the web running direction, and a support element is articulated with a first pivot bearing on a frame and with a second pivot bearing on the blade support beam.

Eine Einsatzmöglichkeit einer solchen Klingenhalterung ist beispielsweise das Beschichten einer Warenbahn, insbesondere einer Papierbahn, mit Streichmasse durch eine Rakel mit der eine möglichst gleichmäßige Schichtdicke erzielt werden soll. Eine andere mögliche Verwendung, ist der Einsatz bei der Herstellung von Kreppapier, bei der eine Warenbahn an einem an einer Transportwalze angeordneten Schaber aufläuft um dadurch die für Kreppapier typische Struktur zu erzeugen. In beiden Einsatzfällen wird die Papierqualität maßgeblich von dem Anpreßdruck der Klinge an die Warenbahn, bzw. an die Transporteinrichtung sowie der Größe des Klingenarbeitswinkels beeinflußt.One possible application of such a blade holder is, for example, coating a material web, in particular a paper web, with a coating slip by means of a doctor blade with which the layer thickness should be as uniform as possible. Another possible use is the use in the production of crepe paper, in which a material web runs onto a scraper arranged on a transport roller in order to thereby produce the structure typical of crepe paper. In both applications, the paper quality is significantly influenced by the contact pressure of the blade on the web or on the transport device and the size of the blade working angle.

Zur Erzielung eines guten Arbeitsergebnisses ist es deshalb notwendig, daß die Klinge möglichst exakt in eine vorbestimmte Position gebracht werden kann. Die Klingen verschleißen jedoch, weshalb sie nachdem sie ihre Verschleißgrenze erreicht haben, entweder ausgewechselt oder nachgeschliffen werden müssen. Zur Ausführung dieser Wartungsarbeiten wird die Klinge üblicherweise von ihrer Betriebsposition von der Walze entfernt. Um gleichmäßig qualitativ hochwertige Papierprodukte herstellen zu können, ist es erforderlich, daß die Klinge des Schabers bzw. der Rakel anschließend wieder exakt in die zuvor eingenommene Betriebsposition gebracht wird. Ebenso sollten die Klingen auch in ihrer Betriebsposition verstellt werden können, beispielsweise zur Optimierung der Papierqualität oder bei der Umstellung der Papiermaschine auf eine andere Papiersorte. Es hat sich jedoch als schwierig erwiesen vorbestimmte Anordnungen der Klinge mit einer guten Wiederholgenauigkeit einzustellen. Zu diesem Zweck existieren deshalb bereits Klingenhalterungen mit denen dies möglich ist.To achieve a good work result, it is therefore necessary that the blade can be brought into a predetermined position as precisely as possible. However, the blades wear out, which is why they have to be replaced or reground after they have reached their wear limit. To perform this maintenance, the blade is usually removed from the roller from its operating position. In order to be able to produce uniformly high-quality paper products, it is necessary that the blade of the scraper or squeegee is then brought back exactly into the previously assumed operating position. Likewise, the blades should also be able to be adjusted in their operating position, for example to optimize the paper quality or when changing the paper machine to a different type of paper. However, it has proven difficult to adjust predetermined blade positions with good repeatability. For this purpose there are already blade holders with which this is possible.

So ist aus der EP-PS 0 137 837 eine Klingenhalterung vorbekannt bei der die Anordnung einer Klinge einer Rakel durch zwei Drehbewegungen eines Klingentragbalkens um jeweils eine senkrecht zur Transportrichtung verlaufende Schwenk- bzw. Drehachse erreicht wird. Um die Anordnung der Klinge an der Walze zu verändern weist diese Klingenhalterung zwei Stellantriebe mit Gewindetrieben auf, die mittels einer Kupplung und eines Kegelradgetriebes miteinander verbindbar sind. Mit dieser konstruktiv relativ aufwendigen Klingenhalterung können zwar der Anpreßdruck und der Klingenarbeitswinkel jeweils unabhängig voneinander variiert werden. Nicht zufriedenstellend ist jedoch, daß nach einem Auswechseln oder Schleifen der Klinge, wozu der Klingentragbalken von der Walze weggeschwenkt wird, der Klingenarbeitswinkel bei dem Heranführen der Klinge an die Walze wieder verhältnismäfig umständlich "von Hand" neu eingestellt werden muß. Um Qualitätseinbußen zu vermeiden, muß dies sehr genau geschehen. Ein exaktes Einstellen dieses Winkels ist aber zeitaufwendig und verursacht daher Kosten.For example, EP-PS 0 137 837 discloses a blade holder in which the arrangement of a blade of a doctor blade is achieved by two rotary movements of a blade support beam, each about a pivoting or rotating axis running perpendicular to the transport direction. In order to change the arrangement of the blade on the roller, this blade holder has two actuators with screw drives, which can be connected to one another by means of a clutch and a bevel gear. With this structurally relatively complex blade holder, the contact pressure and the blade working angle can be varied independently of one another. However, it is not satisfactory that after changing or sharpening the blade, for which purpose the blade support beam is pivoted away from the roller, the blade working angle when the blade is brought closer to the roller has to be readjusted in a comparatively laborious manner “by hand”. In order to avoid loss of quality, this must be done very precisely. However, an exact setting of this angle is time-consuming and therefore causes costs.

Es ist Aufgabe der Erfindung, eine Klingenhalterung darzustellen, mit der es entsprechend einem ersten Aspekt der Erfindung möglich ist, nach einem Wegschwenken der Klinge von einer Transporteinrichtung, die Klinge mit guter Wiederholgenauigkeit bezüglich des Klingenarbeitswinkels wieder an der Transporteinrichtung anzuordnen. Dabei soll die Positionierung der Klinge einfacher und schneller als bei aus dem Stand der Technik vorbekannten Klingenhalterungen vorgenommen werden können. Gemäß einem zweiten Aspekt der Erfindung soll es auch möglich sein, den Klingenarbeitswinkel zu verändern ohne daß dabei der Anpreßdruck der Klinge beeeinflußt wird.It is an object of the invention to provide a blade holder with which, in accordance with a first aspect of the invention, it is possible, after the blade has been pivoted away from a transport device, to arrange the blade on the transport device with good repeatability with regard to the blade working angle. The positioning of the blade should be easier and faster than with blade holders known from the prior art. According to a second aspect of the invention, it should also be possible to change the blade working angle without influencing the contact pressure of the blade.

Die Aufgabe wird durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.The object is achieved by the characterizing features of claim 1.

Demgemäß ist das Tragelement mit dem zweiten Schwenklager an einem Hebel so schwenkbar angelenkt, daß die Klingenhalterung mit einer mit dem Hebel und dem Tragelement verbundenen Schwenkeinrichtung versehen ist, durch die der Klingentragbalken von einer Betriebsposition in eine einen größeren Abstand zur Walze aufweisenden Wartungsposition geschwenkt werden kann, wobei die Schwenkbewegung durch Veränderung des Abstandes der Anlenkpunkte der Schwenkeinrichtung an dem Hebel und dem Tragelement erfolgt. Desweiteren ist sie mit einer mit dem Gestell und dem Tragelement verbundenen Positioniereinrichtung zur Einstellung eines Klingenarbeitswinkels versehen, wobei die Positionierung der Klinge durch Veränderung des Abstandes der beiden Anlenkpunkte der Positioniereinrichtung an dem Gestell und dem Tragelement erfolgt.Accordingly, the support element with the second pivot bearing is pivotally articulated on a lever such that the blade holder is provided with a pivot device connected to the lever and the support element, by means of which the blade support beam can be pivoted from an operating position into a maintenance position which is at a greater distance from the roller , wherein the pivoting movement takes place by changing the distance between the articulation points of the pivoting device on the lever and the support element. Furthermore, it is provided with a positioning device connected to the frame and the support element for setting a blade working angle, the positioning of the blade being effected by changing the distance between the two articulation points of the positioning device on the frame and the support element.

Um bei dieser Klingenhalterung den Abstand, der auch Null sein kann, des Klingentragbalkens von der Transporteinrichtung zu vergrößern wird durch die Verschwenkeinrichtung, der Abstand deren Anlenkpunkte an dem Hebel und dem Tragelement um einen bestimmten Betrag vergrößert. Dies kann durch einen mit einem Druckmedium beaufschlagbaren Zylinder der Verschwenkeinrichtung einer bevorzugten Ausführungsform, beispielsweise einem Pneumatikzylinder, erfolgen. Nachdem die Wartungsarbeiten an der Klinge durchgeführt sind, wird der Abstand der beiden Anlenkpunkte wieder auf den ursprünglichen Betrag verringert. Bei dieser Klingenhalterung muß somit zum Wechsel von der Betriebsposition in die Wartungsposition und wieder in die Betriebsposition zurück, lediglich jeweils eine translatorische Bewegung gleicher Länge ausgeführt werden. Aufgrund des nachstehend noch näher erläuterte Zusammenwirkens der Bestandteile der Erfindung weist die Klinge nach diesen beiden Bewegungen wieder den gleichen Klingenarbeitswinkel auf wie zuvor. Eine erfindungsgemäße Klingenhalterung zeichnet sich somit zum einen durch eine einfache Bedienung aus. Zum anderen sind derartige translatorische Bewegungen relativ schnell und auch sehr genau ausführbar, beispielsweise mit dem bereits oben genannten Pneumatikzylinder.In order to increase the distance, which can also be zero, of the blade support beam from the transport device in this blade holder, the pivoting device increases the distance between its articulation points on the lever and the support element by a certain amount. This can be done, for example, by means of a cylinder of the pivoting device of a preferred embodiment which can be acted upon with a pressure medium a pneumatic cylinder. After the maintenance work on the blade has been carried out, the distance between the two articulation points is reduced again to the original amount. With this blade holder, it is therefore only necessary to carry out a translatory movement of the same length in order to change from the operating position to the maintenance position and back to the operating position. Due to the interaction of the components of the invention, which will be explained in more detail below, after these two movements the blade again has the same blade working angle as before. A blade holder according to the invention is thus distinguished on the one hand by simple operation. On the other hand, such translational movements can be carried out relatively quickly and also very precisely, for example with the pneumatic cylinder already mentioned above.

In einer bevorzugten Ausführungsform der Erfindung ist die Spitze der Klinge in der Drehachse des ersten Schwenklagers anordenbar. Dies kann zeckmäßigerweise konstruktiv so realisiert sein, daß die Drehachse des Schwenklagers auf einem Radius liegt, auf dem sich die Klinge bei ihrer Bewegung von der Wartungsposition in die Betriebsposition bewegt. Bei einer solchen Ausführungsform ist es dann besonders einfach möglich, den Klingenarbeitswinkel durch verändern des Abstandes der Anlenkpunkte der Positioniereinrichtung an dem Gestell und dem Tragelement zu variieren, ohne daß dadurch der Anpreßdruck der Klinge beeinflußt wird. Dies ist möglich, da bei einer Betätigung der Positioniereinrichtung sich die Klinge nur um ihre Spitze dreht, ohne daß die Anordnung der Klinge bezüglich der Transporteinrichtung in sonstiger Weise verändert wird.In a preferred embodiment of the invention, the tip of the blade can be arranged in the axis of rotation of the first pivot bearing. This can be implemented constructively in such a way that the axis of rotation of the pivot bearing lies on a radius on which the blade moves from the maintenance position into the operating position during its movement. In such an embodiment, it is then particularly easy to vary the blade working angle by changing the distance between the articulation points of the positioning device on the frame and the support element, without the contact pressure of the blade being influenced thereby. This is possible because when the positioning device is actuated, the blade only rotates around its tip, without the arrangement of the blade being changed in any other way with respect to the transport device.

Eine besonders einfache Veränderung des Abstandes der Anlenkpunkte der Positioniereinrichtung läßt sich dadurch erreichen, daß vorzugsweise die Positioniereinrichtung mit einem auf der Verbindungslinie der Anlenkpunkte angeordneten Gewindetrieb versehen ist.A particularly simple change in the distance between the articulation points of the positioning device can be achieved in that the positioning device is preferably provided with a screw drive arranged on the connecting line of the articulation points.

Um eine besonders einfache Bedienung zu erreichen, weist die Erfindung in einer zweckmäßigen Ausbildung eine Steuerung auf. Die erfindungsgemäße Klingenhalterung ist dadurch mit entsprechenden Steuerungssignalen, beispielsweise von einem Bedienungspult aus, ferngesteuert in die Wartungs- und Betriebsposition überführbar. Ebenso ist damit eine ferngesteuerte Einstellung des Klingenarbeitswinkels erzielbar.In order to achieve a particularly simple operation, the invention has a control in a practical embodiment. The blade holder according to the invention can thus be remotely controlled with corresponding control signals, for example from an operating console, into the maintenance and operating position. A remote-controlled adjustment of the blade working angle can also be achieved in this way.

Es wird desweiteren bevorzugt, daß bei einer Ausführung der Erfindung der jeweils aktuelle Klingenarbeitswinkel durch eine Sensorik detektierbar und als entsprechendes elektrisches Signal ausgebbar ist. Führt man diese dem jeweils aktuellen Klingenarbeitswinkel entsprechenden Signale einer Regeleinrichtung zu, kann ein exakter Abgleich zwischen einer Soll- und Ist-Anordnung des Klingentragbalkens erzielt werden.It is further preferred that, in an embodiment of the invention, the current blade working angle can be detected by a sensor system and output as a corresponding electrical signal. If these signals, which correspond to the current blade working angle, are fed to a control device, an exact comparison between a target and actual arrangement of the blade support beam can be achieved.

Die Erfindung ist anhand der Figuren näher beschrieben.The invention is described in more detail with reference to the figures.

Im übrigen wird folgendes dargestellt:

  • Fig.1: Seitenansicht einer an einer Walze angeordneten erfindungsgemäßen Klingenhalterung;
  • Fig.2 Darstellung gemäß Fig.1 in der die Klingenhalterung in einer zweiten Stellunng gezeigt ist;
  • Fig.3 Darstellung gemaß Fig.1 in der die Klingenhalterung in einer dritten Stellung gezeigt ist.
The following is shown:
  • 1: side view of a blade holder according to the invention arranged on a roller;
  • 2 representation according to FIG. 1 in which the blade holder is shown in a second position;
  • Fig.3 representation according to Fig.1 in which the blade holder is shown in a third position.

Die in Fig.1 dargestellte erfindungsgemäße Klingenhalterung ist an einer ausschnittsweise gezeigten Stirnseite einer sich im Uhrzeigersinn drehenden Walze 1 einer Papiermaschine zur Herstellung von Kreppapier angeordnet. An der zweiten nicht gezeigten Stirnseite der Walze 1 befindet sich eine zweite (spiegelbildliche) erfindungsgemäße Klingenhalterung, die der in Fig.1 dargestellten entspricht. Zwischen den beiden Klingenhalterungen ist ein sich senkrecht zu der Zeichenebene, entlang der Mantelfläche der Walze 1 erstreckender Klingentragbalken 2 befestigt. Wie zu erkennen ist, weist die Klingenhalterung außerdem ein Tragelement 3, einen unterbrochen dargestellten Hebel 4 und ein ortsfestes Gestell 5 auf. Die Anordnung dieser Elemente ist dabei so vorgenommen, daß in Blickrichtung der Darstellung in Fig.1 der Hebel 4 vor dem Tragelement 3 und dieses wiederum vor dem Klingetragbalken 2 angeordnet ist. Die Stirnseite 6 des Klingentragbalkens 2 und die Fläche 7 des Gestells 5 befinden sich in etwa auf gleicher Höhe.The blade holder according to the invention shown in FIG. 1 is arranged on an end face, which is shown in sections, of a roller 1 of a paper machine rotating in the clockwise direction for producing crepe paper. On the second end of the roller 1, not shown, there is a second (mirror image) blade holder according to the invention, which corresponds to that shown in FIG. A blade support beam 2, which extends perpendicular to the plane of the drawing and along the lateral surface of the roller 1, is fastened between the two blade holders. As can be seen, the blade holder also has a support element 3, a lever 4 shown in broken lines and a stationary frame 5. The arrangement of these elements is such that the lever 4 is arranged in front of the support element 3 in the viewing direction of the illustration in FIG. 1 and this is in turn arranged in front of the blade support beam 2. The end face 6 of the blade support beam 2 and the surface 7 of the frame 5 are approximately at the same height.

Das Tragelement 3 weist, ausgehend von einem Fußteil 8, zwei in etwa senkrecht gegeneinander ausgerichtete Tragarme 9, 10 auf. Zwischen dem Tragelement 3 und dem Gestell 5 befindet sich als Positioniereinrichtung 14 ein Gewindetrieb 15. Dieser wird von einem nicht dargestellten Elektromotor angetrieben und ist zwischen einem Anlenkpunkt 16 an dem Gestell 5 und einem Anlenkpunkt 17 an dem ersten Tragarm 9 des Tragelementes 3 entlang einer (imaginären) Verbindungslinie 18 der beiden Anlenkpunkte 16, 17 angeordnet. Der Gewindetrieb 15 ist dabei jeweils um die beiden Anlenkpunkten 16, 17 drehbar befestigt. Durch ein erstes Schwenklager 20 ist das Tragelement 3 mit seinem zweiten Tragarm 10 ebenfalls an dem Gestell 5 schwenkbar befestigt (s. insb. Fig.2).Starting from a foot part 8, the support element 3 has two support arms 9, 10 which are aligned approximately perpendicular to one another. Between the support element 3 and the frame 5 there is a screw drive 15 as the positioning device 14. This is driven by an electric motor (not shown) and is located between an articulation point 16 on the frame 5 and an articulation point 17 on the first support arm 9 of the support element 3 along a ( imaginary) connecting line 18 of the two articulation points 16, 17 arranged. The screw drive 15 is in each case rotatably fastened about the two articulation points 16, 17. The support element 3 is also pivotally attached to the frame 5 by its second support arm 10 by means of a first pivot bearing 20 (see in particular FIG. 2).

Wie desweiteren in Fig.1 zu erkennen ist, ist der Klingentragbalken 2, der starr mit dem Hebel 4 verbunden ist, in einem zweiten Lager drehbar und axial verschiebbar (hier nicht dargestellt) im Fußteil 8 des Tragelementes 3 gelagert. Zwischen einem Anlenkpunkt 22 im Bereich des anderen Endes des Hebels 4 und einem weiteren Anlenkpunkt 23 an dem ersten Tragarm 9 des Tragelementes 3 befindet sich eine Schwenkeinrichtung 24. Diese ist mit einem Pneumatikzylinder 25 versehen, dessen Wirkrichtung entlang der Verbindungslinie 26 der beiden Anlenkpunkte 22, 23 der Schwenkeinrichtung 24 verläuft. Die Verbindungslinie 26 weist dabei einen größeren Abstand zu dem Schwenklager 21 auf als die Verbindungslinie 18. Ebenso wie der Gewindetrieb 15 ist auch der Pneumatikzylinder 25 jeweils um seine beiden Anlenkpunkte 22, 23 drehbar befestigt.As can also be seen in FIG. 1, the blade support beam 2, which is rigidly connected to the lever 4, is rotatably and axially displaceable (not shown here) in the base part 8 of the support element 3 in a second bearing. Between one Articulation point 22 in the area of the other end of the lever 4 and a further articulation point 23 on the first support arm 9 of the support element 3 there is a swivel device 24. This is provided with a pneumatic cylinder 25, the direction of action along the connecting line 26 of the two articulation points 22, 23 Swivel device 24 extends. The connecting line 26 is at a greater distance from the pivot bearing 21 than the connecting line 18. Like the threaded drive 15, the pneumatic cylinder 25 is also rotatably fastened about its two articulation points 22, 23.

Das Gestell 5, in dem auch die nicht dargestellte Drehachse der Walze 1 gelagert ist, weist an seinem unteren Ende eine mit einem Gewindebolzen 27 verstellbare Lasche 28 auf. An der Lasche 28 des Gestells 5 befindet sich der Anlenkpunkt 16 der Positioniereinrichtung 14 und das erste Schwenklager 20 des Tragelementes 3. Durch Drehen des Gewindebolzens 27 kann der Abstand des Anlenkpunktes 16 und des ersten Schwenklagers 20 von der Umfangslinie der Walze 1 entlang einer Verschiebeachse verändert werden. Unter "Abstand" ist in diesem Zusammenhang jeweils die Projektion der in den Figuren tatsächlich räumlich verlaufenden Abstandslinie in die Zeichenebenen der Fig.1 - 3 zu verstehen.The frame 5, in which the axis of rotation of the roller 1, which is also not shown, is mounted, has at its lower end a tab 28 which can be adjusted with a threaded bolt 27. The pivot point 16 of the positioning device 14 and the first pivot bearing 20 of the support element 3 are located on the tab 28 of the frame 5. By turning the threaded bolt 27, the distance of the pivot point 16 and the first pivot bearing 20 from the circumferential line of the roller 1 can be changed along an axis of displacement become. In this context, “distance” is to be understood in each case as the projection of the distance line that actually runs spatially in the figures into the drawing planes of FIGS. 1-3.

Der Klingentragbalken 2, bei dem es sich im dargestellten Ausführungsbeispiel um einen Tragbalken eines Schabers 30 handelt, ist zusammen mit dem Tragelement 3 und dem Hebel 4 in dem zweiten Schwenklager 21 gelagert. Er kann um die Achse des zweiten Schwenklagers 21 Relativbewegungen gegenüber dem Tragelement 3 ausführen. Gegenüber dem Hebel 4 ist der Klingentragbalken 2 drehfest angeordnet.The blade support beam 2, which in the illustrated embodiment is a support beam of a scraper 30, is mounted in the second pivot bearing 21 together with the support element 3 and the lever 4. It can perform relative movements relative to the support element 3 about the axis of the second pivot bearing 21. The blade support beam 2 is arranged in a rotationally fixed manner in relation to the lever 4.

Der Anpreßdruck des auf dem Klingentragbalken 2 befindlichen Schabers 30 kann mit einer nicht dargestellten, an sich aus dem Stand der Technik vorbekannten, Klingen-Einspanneinrichtung variiert werden. Dies geschieht dadurch, daß der Schaber 30 entlang seiner gesamten Länge (senkrecht zur Zeichenebene) durchgebogen wird und somit eine Biegekraft in Richtung auf die Walze 1 entsteht.The contact pressure of the scraper 30 located on the blade support beam 2 can be varied with a blade clamping device, not shown, which is known per se from the prior art. This is done in that the scraper 30 is bent along its entire length (perpendicular to the plane of the drawing) and thus a bending force is generated in the direction of the roller 1.

Vor dem erstmaligen Einsatz der Klingenhalterung befindet sie sich in einer Wartungsposition wie es in Fig.2 dargestellt ist. Dabei ist die Achse des ersten Schwenklagers 20 mit Hilfe des Gewindebolzens 27 so justiert worden, daß sie sich, wie Fig.2 zeigt, unmittelbar über der Umfangslinie der Walze 1 befindet. Nachdem der Schaber 30 auf dem Klingentragbalken 2 befestigt und auf ihm eine einen vorbestimmter Anpreßdruck bewirkende Biegekraft aufgebracht ist, wird er durch Betätigung der Schwenkeinrichtung 24 in einer Betriebsposition an der Walze 1 angeordnet. Die scharfe Kante, bzw. in den Darstellungen der Figuren die Klingenspitze, des Schabers 30 fluchtet dabei mit der Drehachse des zweiten Schwenklagers 21. Die zweite, nicht dargestellte an der anderen Stirnseite der Walze 1 angeordnete erfindungsgemäße Klingenhalterung, ist stets in der gleichen Weise ausgerichtet wie die dargestellte Klingenhalterung. Um den Klingentragbalken 2 zu verschwenken führen die beiden Klingenhalterungen auch stets synchron gleiche Bewegungen aus.Before the blade holder is used for the first time, it is in a maintenance position as shown in Fig. 2. The axis of the first pivot bearing 20 has been adjusted with the aid of the threaded bolt 27 such that it is located directly above the circumferential line of the roller 1, as shown in FIG. After the scraper 30 is fastened to the blade support beam 2 and a bending force which brings about a predetermined contact pressure is applied to it, it is arranged in an operating position on the roller 1 by actuating the pivoting device 24. The sharp edge, or in the illustrations of the figures the blade tip, of the scraper 30 is aligned with the axis of rotation of the second pivot bearing 21. The second blade holder according to the invention, not shown on the other end face of the roller 1, is always aligned in the same way like the blade holder shown. In order to pivot the blade support beam 2, the two blade holders always perform the same movements synchronously.

Zur Einstellung des Klingenarbeitswinkels, d.h. des Winkels den eine Tangente an der Walze 1 durch die Klingenspitze zusammen mit Klinge eingeschließt, kann das Gestell 3 gemeinsam mit dem Klingentragbalken 2 um die Klingenspitze geschwenkt werden. Dazu kommt die Positioniereinrichtung 14 zum Einsatz. Soll beispielsweise ausgehend von der in Fig.1 gezeigten Anordnung der Schaber 30 mit einem Klingenarbeitswinkel von Fig.3 versehen werden, so wird der Gewindetrieb 15 der Positioniereinrichtung 14 in der Weise betätigt, daß sich der Abstand der beiden Anlenkpunkte 16, 17 um einen dem neuen Klingenarbeitswinkels entsprechenden Betrag vergrößert. Dadurch dreht sich das Tragelement 3 in Gegenuhrzeigerrichtung um das erste Schwenklager 20. Da hierbei der Abstand der beiden Anlenkpunkte 22, 23 gleich bleibt, folgt der Hebel dieser Bewegung. Dies bedingt insgesamt eine Drehbewegung des Klingentragbalkens 2, ebenfalls im Gegenuhrzeigersinn, nur um das erste Schwenklager 20 zur Folge.To adjust the blade working angle, i.e. the angle at which a tangent to the roller 1 is enclosed by the blade tip together with the blade, the frame 3 can be pivoted together with the blade support bar 2 around the blade tip. The positioning device 14 is used for this. If, for example, starting from the arrangement shown in FIG. 1, the scraper 30 is to be provided with a blade working angle of FIG. 3, the screw drive 15 of the positioning device 14 is actuated in such a way that the distance between the two articulation points 16, 17 is one New blade working angle corresponding amount increased. As a result, the support element 3 rotates counterclockwise around the first pivot bearing 20. Since the distance between the two articulation points 22, 23 remains the same, the lever follows this movement. Overall, this requires a rotary movement of the blade support beam 2, likewise counterclockwise, only around the first pivot bearing 20.

Wie oben bereits beschrieben, fluchtet die Klingenspitze mit der Achse des ersten Schwenklagers 20. Dies hat zur Folge, daß sich der Klingentragbalken 2 um die Klingenspitze dreht, wodurch sich nach Beendigung der Bewegung der neue Klingenarbeitswinkel einstellt. Es besteht dabei ein funktionaler Zusammenhang zwischen dem jeweiligen Abstand der Anlenkpunkte und dem dadurch bedingten Klingenarbeitswinkel. Durch obige Erläuterungen wird deutlich, daß der Klingenarbeitswinkel unabhängig vom Anpreßdruck stufenlos eingestellt werden kann. Dies kann sogar während des Betriebes der Papiermaschine vorgenommen werden, beispielsweise um einen Verschleiß der Klingenspitze des Schabers 30 zu kompensieren. Somit können einerseits für bestimmte Papiersorten als optimal gefundene Klingenarbeitswinkel jederzeit auf einfache Weise reproduzierbar eingestellt und beibehalten werden. Andererseits ist es auf ebenso einfache Art und Weise möglich ohne Veränderung des Anpreßdrucks den Klingenarbeitswinkels selbst während des Betriebes zu optimieren.As already described above, the blade tip is aligned with the axis of the first pivot bearing 20. This has the consequence that the blade support beam 2 rotates around the blade tip, whereby the new blade working angle is set after the movement has ended. There is a functional connection between the respective distance between the articulation points and the resulting blade working angle. The above explanations make it clear that the blade working angle can be set continuously, regardless of the contact pressure. This can even be done during the operation of the paper machine, for example to compensate for wear of the blade tip of the scraper 30. On the one hand, blade working angles that are optimally found for certain types of paper can be reproducibly set and maintained at any time in a simple manner. On the other hand, it is possible to optimize the blade working angle even during operation without changing the contact pressure.

Da sich der Schaber 30 auf der imaginären Verbindungslinie der Achsen der beiden Schwenklager 20, 21 befindet, entstehen beim Einsatz keine Momente um die Achse des zweiten Schwenklagers 21. Dadurch können trotz der dynamischen Belastung des Schabers 30 Torsionsschwingungen vermieden werden. Ein weiterer Vorteil resultiert daraus, daß die Klingenspitze mit der Achse des ersten Schwenklagers 20 fluchtet. Durch diese Anordnung ist es möglich, die an der Klinge wirkenden dynamischen Belastungen ohne Entstehung von Momenten in das robust ausgeführte Gestell 5 der nicht dargestellten Stuhlung der Papiermaschine abzuleiten.Since the scraper 30 is located on the imaginary connecting line of the axes of the two pivot bearings 20, 21, no moments arise about the axis of the second pivot bearing 21 during use. As a result, despite the dynamic Strain on the scraper 30 torsional vibrations can be avoided. Another advantage results from the fact that the blade tip is aligned with the axis of the first pivot bearing 20. This arrangement makes it possible to derive the dynamic loads acting on the blade into the robustly designed frame 5 of the frame of the paper machine (not shown) without generating moments.

Wie bekannt ist, verschleißen derartige Schaber während ihres Einsatzes. Nachdem nun der Verschleiß dieses Schabers 30 eine zuläßige Toleranz überschritten hat, wird die Papierherstellung unterbrochen und der Pneumatikzylinder 25 der Schwenkeinrichtung 24 umgekehrt druckbeaufschlagt. Aufgrund der translatorischen Bewegung der Zylinderstange 29 des Pneumatikzylinders 25 vergrößert sich der Abstand der beiden Anlenkpunkte 22, 23 um einen bestimmten Betrag. Der Hebel 4 führt deshalb eine Schwenkbewegung im Uhrzeigersinn um die Achse des zweiten Schwenklagers 21 aus. Der drehfest mit dem Hebel 4 verbundene Klingentragbalken 2 wiederum dreht sich somit ebenfalls im Uhrzeigersinn um das zweite Schwenklager 21. Dadurch vergrößert sich, wie in Fig.2 dargestellt, der Abstand des Schabers 30 von der Walze 1.As is known, such scrapers wear out during use. Now that the wear of this scraper 30 has exceeded a permissible tolerance, the paper production is interrupted and the pneumatic cylinder 25 of the swivel device 24 is pressurized in reverse. Due to the translatory movement of the cylinder rod 29 of the pneumatic cylinder 25, the distance between the two articulation points 22, 23 increases by a certain amount. The lever 4 therefore carries out a pivoting movement clockwise around the axis of the second pivot bearing 21. The blade support beam 2, which is non-rotatably connected to the lever 4, in turn also rotates clockwise around the second pivot bearing 21. As a result, as shown in FIG. 2, the distance of the scraper 30 from the roller 1 increases.

Der Schaber 30 ist in dieser Wartungsposition der Klingenhalterung seitlich zugänglich und kann gegebenenfalls gegen einen anderen ausgetauscht werden. Falls es aufgrund des Verschleißzustandes noch möglich ist wird der Schaber 30 jedoch vorzugsweise nachgeschliffen. Die Breite des Schabers 30 verringert sich jedoch dadurch. Damit die Klingenspitze trotz unterschiedlicher Breiten des Schabers 30 stets in die Achse des ersten Schwenklagers 20 gebracht werden kann, stützt sich der Schaber 30 mit seinem der Klingenspitze gegenüberliegenden Ende an einer nicht dargestellten, verstellbaren Anschlagsfläche ab. Mit der Anschlagleiste lassen sich unterschiedliche Breiten des Schabers 30 kompensieren. Nachdem sich der Schaber 30 auf dem Klingentragbalken 2 wieder in der vorgesehenen Anordnung befindet, wird durch ursprüngliche Druckbeaufschlagung des Pneumatikzylinders 25 der Abstand der beiden Anlenkpunkte 22, 23 wieder auf den ursprünglichen Betrag verringert. Der Hebel 4 und der Klingentragbalken 2 drehen sich dadurch im Gegenuhrzeigersinn um das zweite Schwenklager 21 entlang des gleichen Weges zurück in ihre ursprüngliche Anordnung, der Betriebsposition. Dadurch ist der Klingentragbalken an der Walze 1 mit dem gleichen Klingenarbeitswinkel und Anpreßdruck wie zuvor angeordnet.In this maintenance position, the scraper 30 is laterally accessible to the blade holder and can, if necessary, be exchanged for another. If it is still possible due to the state of wear, the scraper 30 is preferably reground. However, the width of the scraper 30 is reduced. So that the blade tip can always be brought into the axis of the first pivot bearing 20 despite different widths of the scraper 30, the scraper 30 is supported with its end opposite the blade tip on an adjustable stop surface, not shown. Different widths of the scraper 30 can be compensated for with the stop bar. After the scraper 30 is again in the arrangement provided on the blade support beam 2, the distance between the two articulation points 22, 23 is reduced again to the original amount by the original pressurization of the pneumatic cylinder 25. The lever 4 and the blade support beam 2 thereby rotate counterclockwise around the second pivot bearing 21 along the same path back to their original arrangement, the operating position. As a result, the blade support bar is arranged on the roller 1 with the same blade working angle and contact pressure as before.

In anderen in den Figuren nicht dargestellten Ausführungsformen der Erfindung kann auch vorgesehen sein, daß die Steifigkeit der jeweils an einer der Stirnseiten der Walze angeordneten erfindungsgemäßen Klingenhalterungen durch mechanische Querverbindungen, beispielsweise einer Querstrebe, vergrößert wird. Ebenso ist es möglich manuell betätigte Trapezgewindespindeln anstelle der Elektroantriebe der Gewindetriebe vorzusehen.In other embodiments of the invention, not shown in the figures, it can also be provided that the rigidity of the blade holders according to the invention, which are respectively arranged on one of the end faces of the roller, is increased by mechanical cross connections, for example a cross strut. It is also possible to provide manually operated trapezoidal thread spindles instead of the electric drives of the screw drives.

Claims (13)

1. Klingenhalterung zur Anordnung einer Klinge an einer Transporteinrichtung einer Warenbahn, insbesondere an einer Walze oder einem Trockenzylinder einer Papiermaschine, mit folgenden Merkmalen: 1.1 eine in einer Klingen-Einspanneinrichtung gehaltene Klinge ist quer zur Laufrichtung einer Warenbahn positionierbar, wobei die Klingen-Einspanneinrichtung an einem sich quer zur Bahnlaufrichtung erstreckenden Klingentragbalken angeordnet ist; 1.2 ein Tragelement mit einem ersten Schwenklager an einem Gestell und mit einem zweiten Schwenklager ist an dem Klingentragbalken angelenkt; dadurch gekennzeichnet, daß 1.3 das Tragelement (3) im ersten Schwenklager (20) an der Lasche (28) drehbar gelagert ist; 1.4 an dem Tragelement (3) ein schwenkbarer und quer zur Bahnrichtung oszillierbarer Klingentragbalken (2) vorgesehen ist und dieses mit einer Schwenkeinrichtung (24) versehen ist, durch die der Klingentragbalken (2) von einer Betriebsposition in eine einen größeren Abstand zur Walze (1) aufweisenden Wartungsposition geschwenkt werden kann, wobei die Schwenkbewegung durch Veränderung des Abstandes der Anlenkpunkte (22,23) der Schwenkeinrichtung (24) an dem Hebel (4) und dem Tragelement (3) erfolgt; 1.5 die Klingenhalterung mit einer mit dem Gestell (5) und dem Tragelement (3) verbundenen Positioniereinrichtung (14) zur Einstellung eines Klingenarbeitswinkels versehen ist, wobei die Positionierung der Klinge durch Veränderung des Abstandes der beiden Anlenkpunkte (16,17) der Positioniereinrichtung (14) an dem Gestell (5) und dem Tragelement (3) erfolgt. 1. Blade holder for arranging a blade on a transport device of a material web, in particular on a roller or a drying cylinder of a paper machine, with the following features: 1.1 a blade held in a blade clamping device can be positioned transversely to the direction of travel of a material web, the blade clamping device being arranged on a blade support beam extending transversely to the web running direction; 1.2 a support element with a first pivot bearing on a frame and with a second pivot bearing is articulated on the blade support beam; characterized in that 1.3 the support element (3) is rotatably mounted in the first pivot bearing (20) on the tab (28); 1.4 on the support element (3) a pivotable and transverse to the web direction oscillating blade support beam (2) is provided and this is provided with a pivoting device (24) through which the blade support beam (2) from an operating position to a greater distance from the roller (1 ) having a maintenance position, the pivoting movement being effected by changing the distance between the articulation points (22, 23) of the pivoting device (24) on the lever (4) and the support element (3); 1.5 the blade holder is provided with a positioning device (14) connected to the frame (5) and the support element (3) for setting a blade working angle, the positioning of the blade by changing the distance between the two articulation points (16, 17) of the positioning device (14 ) on the frame (5) and the support element (3). 2. Klingenhalterung nach Anspruch 1, dadurch gekennzeichnet, daß die Spitze der Klinge in der Drehachse des ersten Schwenklagers (20) anordenbar ist.2. Blade holder according to claim 1, characterized in that the tip of the blade in the axis of rotation of the first pivot bearing (20) can be arranged. 3. Klingenhalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Abstand einer Verbindungslinie der Anlenkpunkte (22,23) der Schwenkeinrichtung (24) zu dem zweiten Schwenklager (21) in der Betriebspositon und der Wartungsposition größer ist als der Abstand einer Verbindungslinie der Anlenkpunkte (16,17) der Positioniereinrichtung (14).3. Blade holder according to one of the preceding claims, characterized in that the distance of a connecting line of the articulation points (22, 23) of the swivel device (24) to the second swivel bearing (21) in the operating position and the maintenance position is greater than the distance of a connecting line of the articulation points (16, 17) of the positioning device (14). 4. Klingenhalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Abstand des Anlenkpunktes (16) der Positioniereinrichtung (14) von der Mantelfläche der Walze (1) an dem Gestell (5) verstellbar ist.4. Blade holder according to one of the preceding claims, characterized in that the distance of the articulation point (16) of the positioning device (14) from the outer surface of the roller (1) on the frame (5) is adjustable. 5. Klingenhalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schwenkeinrichtung (24) einen mit einem Druckmedium beaufschlagbaren Zylinder aufweist.5. Blade holder according to one of the preceding claims, characterized in that the pivoting device (24) has a cylinder which can be acted upon with a pressure medium. 6. Klingenhalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Positioniereinrichtung (14) einen Gewindetrieb (15) aufweist.6. Blade holder according to one of the preceding claims, characterized in that the positioning device (14) has a screw drive (15). 7. Klingenhalterung nach Anspruch 6, dadurch gekennzeichnet, daß der Gewindetrieb (15) als Trapezgewindespindeltrieb oder Kugelgewindetrieb ausgeführt ist.7. Blade holder according to claim 6, characterized in that the screw drive (15) is designed as a trapezoidal screw drive or ball screw drive. 8. Klingenhalterung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß der Gewindetrieb (15) mit einem Elektromotor antreibbar ist.8. Blade holder according to claim 6 or 7, characterized in that the screw drive (15) can be driven by an electric motor. 9. Klingenhalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Positioniereinrichtung (14) ferngesteuert verstellbar ist.9. Blade holder according to one of the preceding claims, characterized in that the positioning device (14) is remotely adjustable. 10. Klingenhalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der jeweils aktuelle Klingenarbeitswinkel durch eine Sensorik detektierbar und als entsprechendes elektrisches Signal ausgebbar ist.10. Blade holder according to one of the preceding claims, characterized in that the respective current blade working angle can be detected by a sensor system and can be output as a corresponding electrical signal. 11. Klingenhalterung nach Anspruch 10, dadurch gekennzeichnet, daß das dem jeweils aktuellen Klingenarbeitswinkel entsprechende Signale einer Regeleinrichtung zuführbar ist, wodurch ein Abgleich zwischen einer Soll- und Ist-Anordnung des Klingentragbalkens erzielbar ist.11. Blade holder according to claim 10, characterized in that the respective current blade working angle corresponding signals of a control device can be supplied, whereby a comparison between a target and actual arrangement of the blade support beam can be achieved. 12. Klingenhalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die, auf beiden Seiten der Transporteinrichtung korrespondierenden, Hebel (4) und Tragarme (9) miteinander mechanisch gekoppelt sein können, so daß nur ein einseitiger Antrieb notwendig ist.12. Blade holder according to one of the preceding claims, characterized in that the, on both sides of the transport device corresponding lever (4) and support arms (9) can be mechanically coupled to each other, so that only a one-sided drive is necessary. 13. Klingenhalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schwenkbewegungen des Klingentragbalkens (2) ausschließlich axiale gelagerte Bewegungen unter Ausschluß von Kulissenführungen durchgeführt werden können.13. Blade holder according to one of the preceding claims, characterized in that the pivoting movements of the blade support beam (2) can only be carried out axially mounted movements with the exclusion of link guides.
EP95107240A 1994-05-27 1995-05-12 Blade holder Expired - Lifetime EP0684338B1 (en)

Applications Claiming Priority (2)

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DE4418464 1994-05-27
DE4418464A DE4418464C2 (en) 1994-05-27 1994-05-27 Blade holder

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EP0684338A2 true EP0684338A2 (en) 1995-11-29
EP0684338A3 EP0684338A3 (en) 1997-04-23
EP0684338B1 EP0684338B1 (en) 1999-09-29

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US (1) US5868841A (en)
EP (1) EP0684338B1 (en)
AT (1) ATE185177T1 (en)
DE (2) DE4418464C2 (en)
ES (1) ES2138107T3 (en)

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EP0989234A2 (en) * 1998-09-11 2000-03-29 Voith Sulzer Papiertechnik Patent GmbH Doctor blade
AT16455U1 (en) * 2017-05-08 2019-10-15 Valmet Technologies Oy DEVICE FOR MOVING A BEAM

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DE29707991U1 (en) * 1997-05-03 1997-07-03 EMWE GmbH, 97483 Eltmann Device for measuring the relative positioning of a doctor blade to a roller of a paper machine
FI114557B (en) * 2003-03-14 2004-11-15 Metso Paper Inc Paper machine processing equipment with beam

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US4919756A (en) * 1988-08-26 1990-04-24 The Procter & Gamble Company Method of and apparatus for compensatingly adjusting doctor blade
FR2641204A1 (en) * 1988-12-30 1990-07-06 Valmet Paper Machinery Inc DEVICE FOR CONTROLLING THE ANGLE OF INCLINATION OF A RACLE
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0989234A2 (en) * 1998-09-11 2000-03-29 Voith Sulzer Papiertechnik Patent GmbH Doctor blade
EP0989234A3 (en) * 1998-09-11 2000-11-15 Voith Sulzer Papiertechnik Patent GmbH Doctor blade
AT16455U1 (en) * 2017-05-08 2019-10-15 Valmet Technologies Oy DEVICE FOR MOVING A BEAM

Also Published As

Publication number Publication date
ES2138107T3 (en) 2000-01-01
DE4418464A1 (en) 1994-12-08
EP0684338B1 (en) 1999-09-29
EP0684338A3 (en) 1997-04-23
DE4418464C2 (en) 1995-07-06
DE59506927D1 (en) 1999-11-04
US5868841A (en) 1999-02-09
ATE185177T1 (en) 1999-10-15

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